[S390] qdio: new qdio driver.
authorJan Glauber <jang@linux.vnet.ibm.com>
Thu, 17 Jul 2008 15:16:48 +0000 (17:16 +0200)
committerHeiko Carstens <heiko.carstens@de.ibm.com>
Thu, 17 Jul 2008 15:22:10 +0000 (17:22 +0200)
List of major changes:
- split qdio driver into several files
- seperation of thin interrupt code
- improved handling for multiple thin interrupt devices
- inbound and outbound processing now always runs in tasklet context
- significant less tasklet schedules per interrupt needed
- merged qebsm with non-qebsm handling
- cleanup qdio interface and added kerneldoc
- coding style

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
20 files changed:
drivers/s390/cio/Makefile
drivers/s390/cio/qdio.c [deleted file]
drivers/s390/cio/qdio.h
drivers/s390/cio/qdio_debug.c [new file with mode: 0644]
drivers/s390/cio/qdio_debug.h [new file with mode: 0644]
drivers/s390/cio/qdio_main.c [new file with mode: 0644]
drivers/s390/cio/qdio_perf.c [new file with mode: 0644]
drivers/s390/cio/qdio_perf.h [new file with mode: 0644]
drivers/s390/cio/qdio_setup.c [new file with mode: 0644]
drivers/s390/cio/qdio_thinint.c [new file with mode: 0644]
drivers/s390/net/qeth_core.h
drivers/s390/net/qeth_core_main.c
drivers/s390/net/qeth_l2_main.c
drivers/s390/net/qeth_l3_main.c
drivers/s390/scsi/zfcp_dbf.c
drivers/s390/scsi/zfcp_dbf.h
drivers/s390/scsi/zfcp_ext.h
drivers/s390/scsi/zfcp_qdio.c
include/asm-s390/qdio.h
include/asm-s390/setup.h

index 91e9e3f3073af51b7ca4447a0143815dcc6fe9d8..bd79bd1653963c785de07f8d890395f021d61470 100644 (file)
@@ -9,4 +9,6 @@ ccw_device-objs += device_id.o device_pgid.o device_status.o
 obj-y += ccw_device.o cmf.o
 obj-$(CONFIG_CHSC_SCH) += chsc_sch.o
 obj-$(CONFIG_CCWGROUP) += ccwgroup.o
+
+qdio-objs := qdio_main.o qdio_thinint.o qdio_debug.o qdio_perf.o qdio_setup.o
 obj-$(CONFIG_QDIO) += qdio.o
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
deleted file mode 100644 (file)
index 2bf36e1..0000000
+++ /dev/null
@@ -1,3929 +0,0 @@
-/*
- *
- * linux/drivers/s390/cio/qdio.c
- *
- * Linux for S/390 QDIO base support, Hipersocket base support
- * version 2
- *
- * Copyright 2000,2002 IBM Corporation
- * Author(s):             Utz Bacher <utz.bacher@de.ibm.com>
- * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
- *
- * Restriction: only 63 iqdio subchannels would have its own indicator,
- * after that, subsequent subchannels share one indicator
- *
- *
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/proc_fs.h>
-#include <linux/timer.h>
-#include <linux/mempool.h>
-#include <linux/semaphore.h>
-
-#include <asm/ccwdev.h>
-#include <asm/io.h>
-#include <asm/atomic.h>
-#include <asm/timex.h>
-
-#include <asm/debug.h>
-#include <asm/s390_rdev.h>
-#include <asm/qdio.h>
-#include <asm/airq.h>
-
-#include "cio.h"
-#include "css.h"
-#include "device.h"
-#include "qdio.h"
-#include "ioasm.h"
-#include "chsc.h"
-
-/****************** MODULE PARAMETER VARIABLES ********************/
-MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
-MODULE_DESCRIPTION("QDIO base support version 2, " \
-                  "Copyright 2000 IBM Corporation");
-MODULE_LICENSE("GPL");
-
-/******************** HERE WE GO ***********************************/
-
-static const char version[] = "QDIO base support version 2";
-
-static int qdio_performance_stats = 0;
-static int proc_perf_file_registration;
-static struct qdio_perf_stats perf_stats;
-
-static int hydra_thinints;
-static int is_passthrough = 0;
-static int omit_svs;
-
-static int indicator_used[INDICATORS_PER_CACHELINE];
-static __u32 * volatile indicators;
-static __u32 volatile spare_indicator;
-static atomic_t spare_indicator_usecount;
-#define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
-static mempool_t *qdio_mempool_scssc;
-static struct kmem_cache *qdio_q_cache;
-
-static debug_info_t *qdio_dbf_setup;
-static debug_info_t *qdio_dbf_sbal;
-static debug_info_t *qdio_dbf_trace;
-static debug_info_t *qdio_dbf_sense;
-#ifdef CONFIG_QDIO_DEBUG
-static debug_info_t *qdio_dbf_slsb_out;
-static debug_info_t *qdio_dbf_slsb_in;
-#endif /* CONFIG_QDIO_DEBUG */
-
-/* iQDIO stuff: */
-static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
-                                                during a while loop */
-static DEFINE_SPINLOCK(ttiq_list_lock);
-static void *tiqdio_ind;
-static void tiqdio_tl(unsigned long);
-static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
-
-/* not a macro, as one of the arguments is atomic_read */
-static inline int 
-qdio_min(int a,int b)
-{
-       if (a<b)
-               return a;
-       else
-               return b;
-}
-
-/***************** SCRUBBER HELPER ROUTINES **********************/
-#ifdef CONFIG_64BIT
-static inline void qdio_perf_stat_inc(atomic64_t *count)
-{
-       if (qdio_performance_stats)
-               atomic64_inc(count);
-}
-
-static inline void qdio_perf_stat_dec(atomic64_t *count)
-{
-       if (qdio_performance_stats)
-               atomic64_dec(count);
-}
-#else /* CONFIG_64BIT */
-static inline void qdio_perf_stat_inc(atomic_t *count)
-{
-       if (qdio_performance_stats)
-               atomic_inc(count);
-}
-
-static inline void qdio_perf_stat_dec(atomic_t *count)
-{
-       if (qdio_performance_stats)
-               atomic_dec(count);
-}
-#endif /* CONFIG_64BIT */
-
-static inline __u64 
-qdio_get_micros(void)
-{
-       return (get_clock() >> 12); /* time>>12 is microseconds */
-}
-
-/* 
- * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
- * the q in any case, so that we'll not be interrupted when we are in
- * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
- * ever works (last famous words) 
- */
-static inline int 
-qdio_reserve_q(struct qdio_q *q)
-{
-       return atomic_add_return(1,&q->use_count) - 1;
-}
-
-static inline void 
-qdio_release_q(struct qdio_q *q)
-{
-       atomic_dec(&q->use_count);
-}
-
-/*check ccq  */
-static int
-qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
-{
-       char dbf_text[15];
-
-       if (ccq == 0 || ccq == 32)
-               return 0;
-       if (ccq == 96 || ccq == 97)
-               return 1;
-       /*notify devices immediately*/
-       sprintf(dbf_text,"%d", ccq);
-       QDIO_DBF_TEXT2(1,trace,dbf_text);
-       return -EIO;
-}
-/* EQBS: extract buffer states */
-static int
-qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
-            unsigned int *start, unsigned int *cnt)
-{
-       struct qdio_irq *irq;
-       unsigned int tmp_cnt, q_no, ccq;
-       int rc ;
-       char dbf_text[15];
-
-       ccq = 0;
-       tmp_cnt = *cnt;
-       irq = (struct qdio_irq*)q->irq_ptr;
-       q_no = q->q_no;
-       if(!q->is_input_q)
-               q_no += irq->no_input_qs;
-again:
-       ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt);
-       rc = qdio_check_ccq(q, ccq);
-       if ((ccq == 96) && (tmp_cnt != *cnt))
-               rc = 0;
-       if (rc == 1) {
-               QDIO_DBF_TEXT5(1,trace,"eqAGAIN");
-               goto again;
-       }
-       if (rc < 0) {
-                QDIO_DBF_TEXT2(1,trace,"eqberr");
-                sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no);
-                QDIO_DBF_TEXT2(1,trace,dbf_text);
-               q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
-                               QDIO_STATUS_LOOK_FOR_ERROR,
-                               0, 0, 0, -1, -1, q->int_parm);
-               return 0;
-       }
-       return (tmp_cnt - *cnt);
-}
-
-/* SQBS: set buffer states */
-static int
-qdio_do_sqbs(struct qdio_q *q, unsigned char state,
-            unsigned int *start, unsigned int *cnt)
-{
-       struct qdio_irq *irq;
-       unsigned int tmp_cnt, q_no, ccq;
-       int rc;
-       char dbf_text[15];
-
-       ccq = 0;
-       tmp_cnt = *cnt;
-       irq = (struct qdio_irq*)q->irq_ptr;
-       q_no = q->q_no;
-       if(!q->is_input_q)
-               q_no += irq->no_input_qs;
-again:
-       ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt);
-       rc = qdio_check_ccq(q, ccq);
-       if (rc == 1) {
-               QDIO_DBF_TEXT5(1,trace,"sqAGAIN");
-               goto again;
-       }
-       if (rc < 0) {
-               QDIO_DBF_TEXT3(1,trace,"sqberr");
-               sprintf(dbf_text,"%2x,%2x",tmp_cnt,*cnt);
-               QDIO_DBF_TEXT3(1,trace,dbf_text);
-               sprintf(dbf_text,"%d,%d",ccq,q_no);
-               QDIO_DBF_TEXT3(1,trace,dbf_text);
-               q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
-                               QDIO_STATUS_LOOK_FOR_ERROR,
-                               0, 0, 0, -1, -1, q->int_parm);
-               return 0;
-       }
-       return (tmp_cnt - *cnt);
-}
-
-static inline int
-qdio_set_slsb(struct qdio_q *q, unsigned int *bufno,
-             unsigned char state, unsigned int *count)
-{
-       volatile char *slsb;
-       struct qdio_irq *irq;
-
-       irq = (struct qdio_irq*)q->irq_ptr;
-       if (!irq->is_qebsm) {
-               slsb = (char *)&q->slsb.acc.val[(*bufno)];
-               xchg(slsb, state);
-               return 1;
-       }
-       return qdio_do_sqbs(q, state, bufno, count);
-}
-
-#ifdef CONFIG_QDIO_DEBUG
-static inline void
-qdio_trace_slsb(struct qdio_q *q)
-{
-       if (q->queue_type==QDIO_TRACE_QTYPE) {
-               if (q->is_input_q)
-                       QDIO_DBF_HEX2(0,slsb_in,&q->slsb,
-                                     QDIO_MAX_BUFFERS_PER_Q);
-               else
-                       QDIO_DBF_HEX2(0,slsb_out,&q->slsb,
-                                     QDIO_MAX_BUFFERS_PER_Q);
-       }
-}
-#endif
-
-static inline int
-set_slsb(struct qdio_q *q, unsigned int *bufno,
-        unsigned char state, unsigned int *count)
-{
-       int rc;
-#ifdef CONFIG_QDIO_DEBUG
-       qdio_trace_slsb(q);
-#endif
-       rc = qdio_set_slsb(q, bufno, state, count);
-#ifdef CONFIG_QDIO_DEBUG
-       qdio_trace_slsb(q);
-#endif
-       return rc;
-}
-static inline int 
-qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
-              unsigned int gpr3)
-{
-       int cc;
-
-       QDIO_DBF_TEXT4(0,trace,"sigasync");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       qdio_perf_stat_inc(&perf_stats.siga_syncs);
-
-       cc = do_siga_sync(q->schid, gpr2, gpr3);
-       if (cc)
-               QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
-
-       return cc;
-}
-
-static inline int
-qdio_siga_sync_q(struct qdio_q *q)
-{
-       if (q->is_input_q)
-               return qdio_siga_sync(q, 0, q->mask);
-       return qdio_siga_sync(q, q->mask, 0);
-}
-
-static int
-__do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
-{
-       struct qdio_irq *irq;
-       unsigned int fc = 0;
-       unsigned long schid;
-
-       irq = (struct qdio_irq *) q->irq_ptr;
-       if (!irq->is_qebsm)
-              schid = *((u32 *)&q->schid);
-       else {
-              schid = irq->sch_token;
-              fc |= 0x80;
-       }
-       return do_siga_output(schid, q->mask, busy_bit, fc);
-}
-
-/* 
- * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
- * an access exception 
- */
-static int
-qdio_siga_output(struct qdio_q *q)
-{
-       int cc;
-       __u32 busy_bit;
-       __u64 start_time=0;
-
-       qdio_perf_stat_inc(&perf_stats.siga_outs);
-
-       QDIO_DBF_TEXT4(0,trace,"sigaout");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       for (;;) {
-               cc = __do_siga_output(q, &busy_bit);
-//QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
-               if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
-                       if (!start_time) 
-                               start_time=NOW;
-                       if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
-                               break;
-               } else
-                       break;
-       }
-       
-       if ((cc==2) && (busy_bit)) 
-               cc |= QDIO_SIGA_ERROR_B_BIT_SET;
-
-       if (cc)
-               QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
-
-       return cc;
-}
-
-static int
-qdio_siga_input(struct qdio_q *q)
-{
-       int cc;
-
-       QDIO_DBF_TEXT4(0,trace,"sigain");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       qdio_perf_stat_inc(&perf_stats.siga_ins);
-
-       cc = do_siga_input(q->schid, q->mask);
-       
-       if (cc)
-               QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
-
-       return cc;
-}
-
-/* locked by the locks in qdio_activate and qdio_cleanup */
-static __u32 *
-qdio_get_indicator(void)
-{
-       int i;
-
-       for (i = 0; i < INDICATORS_PER_CACHELINE; i++)
-               if (!indicator_used[i]) {
-                       indicator_used[i]=1;
-                       return indicators+i;
-               }
-       atomic_inc(&spare_indicator_usecount);
-       return (__u32 * volatile) &spare_indicator;
-}
-
-/* locked by the locks in qdio_activate and qdio_cleanup */
-static void 
-qdio_put_indicator(__u32 *addr)
-{
-       int i;
-
-       if ( (addr) && (addr!=&spare_indicator) ) {
-               i=addr-indicators;
-               indicator_used[i]=0;
-       }
-       if (addr == &spare_indicator)
-               atomic_dec(&spare_indicator_usecount);
-}
-
-static inline void
-tiqdio_clear_summary_bit(__u32 *location)
-{
-       QDIO_DBF_TEXT5(0,trace,"clrsummb");
-       QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
-
-       xchg(location,0);
-}
-
-static inline  void
-tiqdio_set_summary_bit(__u32 *location)
-{
-       QDIO_DBF_TEXT5(0,trace,"setsummb");
-       QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
-
-       xchg(location,-1);
-}
-
-static inline void 
-tiqdio_sched_tl(void)
-{
-       tasklet_hi_schedule(&tiqdio_tasklet);
-}
-
-static void
-qdio_mark_tiq(struct qdio_q *q)
-{
-       unsigned long flags;
-
-       QDIO_DBF_TEXT4(0,trace,"mark iq");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       spin_lock_irqsave(&ttiq_list_lock,flags);
-       if (unlikely(atomic_read(&q->is_in_shutdown)))
-               goto out_unlock;
-
-       if (!q->is_input_q)
-               goto out_unlock;
-
-       if ((q->list_prev) || (q->list_next)) 
-               goto out_unlock;
-
-       if (!tiq_list) {
-               tiq_list=q;
-               q->list_prev=q;
-               q->list_next=q;
-       } else {
-               q->list_next=tiq_list;
-               q->list_prev=tiq_list->list_prev;
-               tiq_list->list_prev->list_next=q;
-               tiq_list->list_prev=q;
-       }
-       spin_unlock_irqrestore(&ttiq_list_lock,flags);
-
-       tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
-       tiqdio_sched_tl();
-       return;
-out_unlock:
-       spin_unlock_irqrestore(&ttiq_list_lock,flags);
-       return;
-}
-
-static inline void
-qdio_mark_q(struct qdio_q *q)
-{
-       QDIO_DBF_TEXT4(0,trace,"mark q");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       if (unlikely(atomic_read(&q->is_in_shutdown)))
-               return;
-
-       tasklet_schedule(&q->tasklet);
-}
-
-static int
-qdio_stop_polling(struct qdio_q *q)
-{
-#ifdef QDIO_USE_PROCESSING_STATE
-       unsigned int tmp, gsf, count = 1;
-       unsigned char state = 0;
-       struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
-
-       if (!atomic_xchg(&q->polling,0))
-               return 1;
-
-       QDIO_DBF_TEXT4(0,trace,"stoppoll");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       /* show the card that we are not polling anymore */
-       if (!q->is_input_q)
-               return 1;
-
-       tmp = gsf = GET_SAVED_FRONTIER(q);
-       tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) );
-       set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count);
-
-       /* 
-        * we don't issue this SYNC_MEMORY, as we trust Rick T and
-        * moreover will not use the PROCESSING state under VM, so
-        * q->polling was 0 anyway
-        */
-       /*SYNC_MEMORY;*/
-       if (irq->is_qebsm) {
-               count = 1;
-               qdio_do_eqbs(q, &state, &gsf, &count);
-       } else
-               state = q->slsb.acc.val[gsf];
-       if (state != SLSB_P_INPUT_PRIMED)
-               return 1;
-       /* 
-        * set our summary bit again, as otherwise there is a
-        * small window we can miss between resetting it and
-        * checking for PRIMED state 
-        */
-       if (q->is_thinint_q)
-               tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
-       return 0;
-
-#else /* QDIO_USE_PROCESSING_STATE */
-       return 1;
-#endif /* QDIO_USE_PROCESSING_STATE */
-}
-
-/* 
- * see the comment in do_QDIO and before qdio_reserve_q about the
- * sophisticated locking outside of unmark_q, so that we don't need to
- * disable the interrupts :-) 
-*/
-static void
-qdio_unmark_q(struct qdio_q *q)
-{
-       unsigned long flags;
-
-       QDIO_DBF_TEXT4(0,trace,"unmark q");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       if ((!q->list_prev)||(!q->list_next))
-               return;
-
-       if ((q->is_thinint_q)&&(q->is_input_q)) {
-               /* iQDIO */
-               spin_lock_irqsave(&ttiq_list_lock,flags);
-               /* in case cleanup has done this already and simultanously
-                * qdio_unmark_q is called from the interrupt handler, we've
-                * got to check this in this specific case again */
-               if ((!q->list_prev)||(!q->list_next))
-                       goto out;
-               if (q->list_next==q) {
-                       /* q was the only interesting q */
-                       tiq_list=NULL;
-                       q->list_next=NULL;
-                       q->list_prev=NULL;
-               } else {
-                       q->list_next->list_prev=q->list_prev;
-                       q->list_prev->list_next=q->list_next;
-                       tiq_list=q->list_next;
-                       q->list_next=NULL;
-                       q->list_prev=NULL;
-               }
-out:
-               spin_unlock_irqrestore(&ttiq_list_lock,flags);
-       }
-}
-
-static inline unsigned long 
-tiqdio_clear_global_summary(void)
-{
-       unsigned long time;
-
-       QDIO_DBF_TEXT5(0,trace,"clrglobl");
-       
-       time = do_clear_global_summary();
-
-       QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
-
-       return time;
-}
-
-
-/************************* OUTBOUND ROUTINES *******************************/
-static int
-qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q)
-{
-        struct qdio_irq *irq;
-        unsigned char state;
-        unsigned int cnt, count, ftc;
-
-        irq = (struct qdio_irq *) q->irq_ptr;
-        if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis))
-                SYNC_MEMORY;
-
-        ftc = q->first_to_check;
-        count = qdio_min(atomic_read(&q->number_of_buffers_used),
-                        (QDIO_MAX_BUFFERS_PER_Q-1));
-        if (count == 0)
-                return q->first_to_check;
-        cnt = qdio_do_eqbs(q, &state, &ftc, &count);
-        if (cnt == 0)
-                return q->first_to_check;
-        switch (state) {
-        case SLSB_P_OUTPUT_ERROR:
-                QDIO_DBF_TEXT3(0,trace,"outperr");
-                atomic_sub(cnt , &q->number_of_buffers_used);
-                if (q->qdio_error)
-                        q->error_status_flags |=
-                                QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
-                q->qdio_error = SLSB_P_OUTPUT_ERROR;
-                q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
-                q->first_to_check = ftc;
-                break;
-        case SLSB_P_OUTPUT_EMPTY:
-                QDIO_DBF_TEXT5(0,trace,"outpempt");
-                atomic_sub(cnt, &q->number_of_buffers_used);
-                q->first_to_check = ftc;
-                break;
-        case SLSB_CU_OUTPUT_PRIMED:
-                /* all buffers primed */
-                QDIO_DBF_TEXT5(0,trace,"outpprim");
-                break;
-        default:
-                break;
-        }
-        QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
-        return q->first_to_check;
-}
-
-static int
-qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q)
-{
-        struct qdio_irq *irq;
-        unsigned char state;
-        int tmp, ftc, count, cnt;
-        char dbf_text[15];
-
-
-        irq = (struct qdio_irq *) q->irq_ptr;
-        ftc = q->first_to_check;
-        count = qdio_min(atomic_read(&q->number_of_buffers_used),
-                        (QDIO_MAX_BUFFERS_PER_Q-1));
-        if (count == 0)
-                 return q->first_to_check;
-        cnt = qdio_do_eqbs(q, &state, &ftc, &count);
-        if (cnt == 0)
-                 return q->first_to_check;
-        switch (state) {
-        case SLSB_P_INPUT_ERROR :
-#ifdef CONFIG_QDIO_DEBUG
-                QDIO_DBF_TEXT3(1,trace,"inperr");
-                sprintf(dbf_text,"%2x,%2x",ftc,count);
-                QDIO_DBF_TEXT3(1,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-                if (q->qdio_error)
-                        q->error_status_flags |=
-                                QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
-                q->qdio_error = SLSB_P_INPUT_ERROR;
-                q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
-                atomic_sub(cnt, &q->number_of_buffers_used);
-                q->first_to_check = ftc;
-                break;
-        case SLSB_P_INPUT_PRIMED :
-                QDIO_DBF_TEXT3(0,trace,"inptprim");
-                sprintf(dbf_text,"%2x,%2x",ftc,count);
-                QDIO_DBF_TEXT3(1,trace,dbf_text);
-                tmp = 0;
-                ftc = q->first_to_check;
-#ifdef QDIO_USE_PROCESSING_STATE
-               if (cnt > 1) {
-                       cnt -= 1;
-                       tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
-                       if (!tmp)
-                               break;
-               }
-               cnt = 1;
-               tmp += set_slsb(q, &ftc,
-                              SLSB_P_INPUT_PROCESSING, &cnt);
-               atomic_set(&q->polling, 1);
-#else
-                tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
-#endif
-                atomic_sub(tmp, &q->number_of_buffers_used);
-                q->first_to_check = ftc;
-                break;
-        case SLSB_CU_INPUT_EMPTY:
-        case SLSB_P_INPUT_NOT_INIT:
-        case SLSB_P_INPUT_PROCESSING:
-                QDIO_DBF_TEXT5(0,trace,"inpnipro");
-                break;
-        default:
-                break;
-        }
-        QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
-        return q->first_to_check;
-}
-
-static int
-qdio_get_outbound_buffer_frontier(struct qdio_q *q)
-{
-       struct qdio_irq *irq;
-        volatile char *slsb;
-        unsigned int count = 1;
-        int first_not_to_check, f, f_mod_no;
-       char dbf_text[15];
-
-       QDIO_DBF_TEXT4(0,trace,"getobfro");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       irq = (struct qdio_irq *) q->irq_ptr;
-       if (irq->is_qebsm)
-               return qdio_qebsm_get_outbound_buffer_frontier(q);
-
-       slsb=&q->slsb.acc.val[0];
-       f_mod_no=f=q->first_to_check;
-       /* 
-        * f points to already processed elements, so f+no_used is correct...
-        * ... but: we don't check 128 buffers, as otherwise
-        * qdio_has_outbound_q_moved would return 0 
-        */
-       first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
-                                     (QDIO_MAX_BUFFERS_PER_Q-1));
-
-       if (((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis)) ||
-                (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH))
-               SYNC_MEMORY;
-
-check_next:
-       if (f==first_not_to_check) 
-               goto out;
-
-       switch(slsb[f_mod_no]) {
-
-        /* the adapter has not fetched the output yet */
-       case SLSB_CU_OUTPUT_PRIMED:
-               QDIO_DBF_TEXT5(0,trace,"outpprim");
-               break;
-
-       /* the adapter got it */
-       case SLSB_P_OUTPUT_EMPTY:
-               atomic_dec(&q->number_of_buffers_used);
-               f++;
-               f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
-               QDIO_DBF_TEXT5(0,trace,"outpempt");
-               goto check_next;
-
-       case SLSB_P_OUTPUT_ERROR:
-               QDIO_DBF_TEXT3(0,trace,"outperr");
-               sprintf(dbf_text,"%x-%x-%x",f_mod_no,
-                       q->sbal[f_mod_no]->element[14].sbalf.value,
-                       q->sbal[f_mod_no]->element[15].sbalf.value);
-               QDIO_DBF_TEXT3(1,trace,dbf_text);
-               QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
-
-               /* kind of process the buffer */
-               set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count);
-
-               /* 
-                * we increment the frontier, as this buffer
-                * was processed obviously 
-                */
-               atomic_dec(&q->number_of_buffers_used);
-               f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
-
-               if (q->qdio_error)
-                       q->error_status_flags|=
-                               QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
-               q->qdio_error=SLSB_P_OUTPUT_ERROR;
-               q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
-
-               break;
-
-       /* no new buffers */
-       default:
-               QDIO_DBF_TEXT5(0,trace,"outpni");
-       }
-out:
-       return (q->first_to_check=f_mod_no);
-}
-
-/* all buffers are processed */
-static int
-qdio_is_outbound_q_done(struct qdio_q *q)
-{
-       int no_used;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-#endif
-
-       no_used=atomic_read(&q->number_of_buffers_used);
-
-#ifdef CONFIG_QDIO_DEBUG
-       if (no_used) {
-               sprintf(dbf_text,"oqisnt%02x",no_used);
-               QDIO_DBF_TEXT4(0,trace,dbf_text);
-       } else {
-               QDIO_DBF_TEXT4(0,trace,"oqisdone");
-       }
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-#endif /* CONFIG_QDIO_DEBUG */
-       return (no_used==0);
-}
-
-static int
-qdio_has_outbound_q_moved(struct qdio_q *q)
-{
-       int i;
-
-       i=qdio_get_outbound_buffer_frontier(q);
-
-       if ( (i!=GET_SAVED_FRONTIER(q)) ||
-            (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
-               SAVE_FRONTIER(q,i);
-               QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               return 1;
-       } else {
-               QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               return 0;
-       }
-}
-
-static void
-qdio_kick_outbound_q(struct qdio_q *q)
-{
-       int result;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-
-       QDIO_DBF_TEXT4(0,trace,"kickoutq");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if (!q->siga_out)
-               return;
-
-       /* here's the story with cc=2 and busy bit set (thanks, Rick):
-        * VM's CP could present us cc=2 and busy bit set on SIGA-write
-        * during reconfiguration of their Guest LAN (only in HIPERS mode,
-        * QDIO mode is asynchronous -- cc=2 and busy bit there will take
-        * the queues down immediately; and not being under VM we have a
-        * problem on cc=2 and busy bit set right away).
-        *
-        * Therefore qdio_siga_output will try for a short time constantly,
-        * if such a condition occurs. If it doesn't change, it will
-        * increase the busy_siga_counter and save the timestamp, and
-        * schedule the queue for later processing (via mark_q, using the
-        * queue tasklet). __qdio_outbound_processing will check out the
-        * counter. If non-zero, it will call qdio_kick_outbound_q as often
-        * as the value of the counter. This will attempt further SIGA
-        * instructions. For each successful SIGA, the counter is
-        * decreased, for failing SIGAs the counter remains the same, after
-        * all.
-        * After some time of no movement, qdio_kick_outbound_q will
-        * finally fail and reflect corresponding error codes to call
-        * the upper layer module and have it take the queues down.
-        *
-        * Note that this is a change from the original HiperSockets design
-        * (saying cc=2 and busy bit means take the queues down), but in
-        * these days Guest LAN didn't exist... excessive cc=2 with busy bit
-        * conditions will still take the queues down, but the threshold is
-        * higher due to the Guest LAN environment.
-        */
-
-
-       result=qdio_siga_output(q);
-
-       switch (result) {
-       case 0:
-               /* went smooth this time, reset timestamp */
-#ifdef CONFIG_QDIO_DEBUG
-               QDIO_DBF_TEXT3(0,trace,"cc2reslv");
-               sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
-                       atomic_read(&q->busy_siga_counter));
-               QDIO_DBF_TEXT3(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-               q->timing.busy_start=0;
-               break;
-       case (2|QDIO_SIGA_ERROR_B_BIT_SET):
-               /* cc=2 and busy bit: */
-               atomic_inc(&q->busy_siga_counter);
-
-               /* if the last siga was successful, save
-                * timestamp here */
-               if (!q->timing.busy_start)
-                       q->timing.busy_start=NOW;
-
-               /* if we're in time, don't touch error_status_flags
-                * and siga_error */
-               if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
-                       qdio_mark_q(q);
-                       break;
-               }
-               QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
-#ifdef CONFIG_QDIO_DEBUG
-               sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
-                       atomic_read(&q->busy_siga_counter));
-               QDIO_DBF_TEXT3(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-               /* else fallthrough and report error */
-       default:
-               /* for plain cc=1, 2 or 3: */
-               if (q->siga_error)
-                       q->error_status_flags|=
-                               QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
-               q->error_status_flags|=
-                       QDIO_STATUS_LOOK_FOR_ERROR;
-               q->siga_error=result;
-       }
-}
-
-static void
-qdio_kick_outbound_handler(struct qdio_q *q)
-{
-       int start, end, real_end, count;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-#endif
-
-       start = q->first_element_to_kick;
-       /* last_move_ftc was just updated */
-       real_end = GET_SAVED_FRONTIER(q);
-       end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
-               (QDIO_MAX_BUFFERS_PER_Q-1);
-       count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
-               (QDIO_MAX_BUFFERS_PER_Q-1);
-
-#ifdef CONFIG_QDIO_DEBUG
-       QDIO_DBF_TEXT4(0,trace,"kickouth");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       sprintf(dbf_text,"s=%2xc=%2x",start,count);
-       QDIO_DBF_TEXT4(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if (q->state==QDIO_IRQ_STATE_ACTIVE)
-               q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
-                          q->error_status_flags,
-                          q->qdio_error,q->siga_error,q->q_no,start,count,
-                          q->int_parm);
-
-       /* for the next time: */
-       q->first_element_to_kick=real_end;
-       q->qdio_error=0;
-       q->siga_error=0;
-       q->error_status_flags=0;
-}
-
-static void
-__qdio_outbound_processing(struct qdio_q *q)
-{
-       int siga_attempts;
-
-       QDIO_DBF_TEXT4(0,trace,"qoutproc");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       if (unlikely(qdio_reserve_q(q))) {
-               qdio_release_q(q);
-               qdio_perf_stat_inc(&perf_stats.outbound_tl_runs_resched);
-               /* as we're sissies, we'll check next time */
-               if (likely(!atomic_read(&q->is_in_shutdown))) {
-                       qdio_mark_q(q);
-                       QDIO_DBF_TEXT4(0,trace,"busy,agn");
-               }
-               return;
-       }
-       qdio_perf_stat_inc(&perf_stats.outbound_tl_runs);
-       qdio_perf_stat_inc(&perf_stats.tl_runs);
-
-       /* see comment in qdio_kick_outbound_q */
-       siga_attempts=atomic_read(&q->busy_siga_counter);
-       while (siga_attempts) {
-               atomic_dec(&q->busy_siga_counter);
-               qdio_kick_outbound_q(q);
-               siga_attempts--;
-       }
-
-       if (qdio_has_outbound_q_moved(q))
-               qdio_kick_outbound_handler(q);
-
-       if (q->queue_type == QDIO_ZFCP_QFMT) {
-               if ((!q->hydra_gives_outbound_pcis) &&
-                   (!qdio_is_outbound_q_done(q)))
-                       qdio_mark_q(q);
-       }
-       else if (((!q->is_iqdio_q) && (!q->is_pci_out)) ||
-                (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH)) {
-               /* 
-                * make sure buffer switch from PRIMED to EMPTY is noticed
-                * and outbound_handler is called
-                */
-               if (qdio_is_outbound_q_done(q)) {
-                       del_timer(&q->timer);
-               } else {
-                       if (!timer_pending(&q->timer))
-                               mod_timer(&q->timer, jiffies +
-                                         QDIO_FORCE_CHECK_TIMEOUT);
-               }
-       }
-
-       qdio_release_q(q);
-}
-
-static void
-qdio_outbound_processing(unsigned long q)
-{
-       __qdio_outbound_processing((struct qdio_q *) q);
-}
-
-/************************* INBOUND ROUTINES *******************************/
-
-
-static int
-qdio_get_inbound_buffer_frontier(struct qdio_q *q)
-{
-       struct qdio_irq *irq;
-       int f,f_mod_no;
-       volatile char *slsb;
-       unsigned int count = 1;
-       int first_not_to_check;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-#endif /* CONFIG_QDIO_DEBUG */
-#ifdef QDIO_USE_PROCESSING_STATE
-       int last_position=-1;
-#endif /* QDIO_USE_PROCESSING_STATE */
-
-       QDIO_DBF_TEXT4(0,trace,"getibfro");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       irq = (struct qdio_irq *) q->irq_ptr;
-       if (irq->is_qebsm)
-               return qdio_qebsm_get_inbound_buffer_frontier(q);
-
-       slsb=&q->slsb.acc.val[0];
-       f_mod_no=f=q->first_to_check;
-       /* 
-        * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
-        * would return 0 
-        */
-       first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
-                                     (QDIO_MAX_BUFFERS_PER_Q-1));
-
-       /* 
-        * we don't use this one, as a PCI or we after a thin interrupt
-        * will sync the queues
-        */
-       /* SYNC_MEMORY;*/
-
-check_next:
-       f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
-       if (f==first_not_to_check) 
-               goto out;
-       switch (slsb[f_mod_no]) {
-
-       /* CU_EMPTY means frontier is reached */
-       case SLSB_CU_INPUT_EMPTY:
-               QDIO_DBF_TEXT5(0,trace,"inptempt");
-               break;
-
-       /* P_PRIMED means set slsb to P_PROCESSING and move on */
-       case SLSB_P_INPUT_PRIMED:
-               QDIO_DBF_TEXT5(0,trace,"inptprim");
-
-#ifdef QDIO_USE_PROCESSING_STATE
-               /* 
-                * as soon as running under VM, polling the input queues will
-                * kill VM in terms of CP overhead 
-                */
-               if (q->siga_sync) {
-                       set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
-               } else {
-                       /* set the previous buffer to NOT_INIT. The current
-                        * buffer will be set to PROCESSING at the end of
-                        * this function to avoid further interrupts. */
-                       if (last_position>=0)
-                               set_slsb(q, &last_position,
-                                        SLSB_P_INPUT_NOT_INIT, &count);
-                       atomic_set(&q->polling,1);
-                       last_position=f_mod_no;
-               }
-#else /* QDIO_USE_PROCESSING_STATE */
-               set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
-#endif /* QDIO_USE_PROCESSING_STATE */
-               /* 
-                * not needed, as the inbound queue will be synced on the next
-                * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
-                */
-               /*SYNC_MEMORY;*/
-               f++;
-               atomic_dec(&q->number_of_buffers_used);
-               goto check_next;
-
-       case SLSB_P_INPUT_NOT_INIT:
-       case SLSB_P_INPUT_PROCESSING:
-               QDIO_DBF_TEXT5(0,trace,"inpnipro");
-               break;
-
-       /* P_ERROR means frontier is reached, break and report error */
-       case SLSB_P_INPUT_ERROR:
-#ifdef CONFIG_QDIO_DEBUG
-               sprintf(dbf_text,"inperr%2x",f_mod_no);
-               QDIO_DBF_TEXT3(1,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-               QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
-
-               /* kind of process the buffer */
-               set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
-
-               if (q->qdio_error)
-                       q->error_status_flags|=
-                               QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
-               q->qdio_error=SLSB_P_INPUT_ERROR;
-               q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
-
-               /* we increment the frontier, as this buffer
-                * was processed obviously */
-               f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
-               atomic_dec(&q->number_of_buffers_used);
-
-#ifdef QDIO_USE_PROCESSING_STATE
-               last_position=-1;
-#endif /* QDIO_USE_PROCESSING_STATE */
-
-               break;
-
-       /* everything else means frontier not changed (HALTED or so) */
-       default: 
-               break;
-       }
-out:
-       q->first_to_check=f_mod_no;
-
-#ifdef QDIO_USE_PROCESSING_STATE
-       if (last_position>=0)
-               set_slsb(q, &last_position, SLSB_P_INPUT_PROCESSING, &count);
-#endif /* QDIO_USE_PROCESSING_STATE */
-
-       QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
-
-       return q->first_to_check;
-}
-
-static int
-qdio_has_inbound_q_moved(struct qdio_q *q)
-{
-       int i;
-
-       i=qdio_get_inbound_buffer_frontier(q);
-       if ( (i!=GET_SAVED_FRONTIER(q)) ||
-            (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
-               SAVE_FRONTIER(q,i);
-               if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
-                       SAVE_TIMESTAMP(q);
-
-               QDIO_DBF_TEXT4(0,trace,"inhasmvd");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               return 1;
-       } else {
-               QDIO_DBF_TEXT4(0,trace,"inhsntmv");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               return 0;
-       }
-}
-
-/* means, no more buffers to be filled */
-static int
-tiqdio_is_inbound_q_done(struct qdio_q *q)
-{
-       int no_used;
-       unsigned int start_buf, count;
-       unsigned char state = 0;
-       struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
-
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-#endif
-
-       no_used=atomic_read(&q->number_of_buffers_used);
-
-       /* propagate the change from 82 to 80 through VM */
-       SYNC_MEMORY;
-
-#ifdef CONFIG_QDIO_DEBUG
-       if (no_used) {
-               sprintf(dbf_text,"iqisnt%02x",no_used);
-               QDIO_DBF_TEXT4(0,trace,dbf_text);
-       } else {
-               QDIO_DBF_TEXT4(0,trace,"iniqisdo");
-       }
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if (!no_used)
-               return 1;
-       if (irq->is_qebsm) {
-               count = 1;
-               start_buf = q->first_to_check;
-               qdio_do_eqbs(q, &state, &start_buf, &count);
-       } else
-               state = q->slsb.acc.val[q->first_to_check];
-       if (state != SLSB_P_INPUT_PRIMED)
-               /* 
-                * nothing more to do, if next buffer is not PRIMED.
-                * note that we did a SYNC_MEMORY before, that there
-                * has been a sychnronization.
-                * we will return 0 below, as there is nothing to do
-                * (stop_polling not necessary, as we have not been
-                * using the PROCESSING state 
-                */
-               return 0;
-
-       /* 
-        * ok, the next input buffer is primed. that means, that device state 
-        * change indicator and adapter local summary are set, so we will find
-        * it next time.
-        * we will return 0 below, as there is nothing to do, except scheduling
-        * ourselves for the next time. 
-        */
-       tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
-       tiqdio_sched_tl();
-       return 0;
-}
-
-static int
-qdio_is_inbound_q_done(struct qdio_q *q)
-{
-       int no_used;
-       unsigned int start_buf, count;
-       unsigned char state = 0;
-       struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
-
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-#endif
-
-       no_used=atomic_read(&q->number_of_buffers_used);
-
-       /* 
-        * we need that one for synchronization with the adapter, as it
-        * does a kind of PCI avoidance 
-        */
-       SYNC_MEMORY;
-
-       if (!no_used) {
-               QDIO_DBF_TEXT4(0,trace,"inqisdnA");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               return 1;
-       }
-       if (irq->is_qebsm) {
-               count = 1;
-               start_buf = q->first_to_check;
-               qdio_do_eqbs(q, &state, &start_buf, &count);
-       } else
-               state = q->slsb.acc.val[q->first_to_check];
-       if (state == SLSB_P_INPUT_PRIMED) {
-               /* we got something to do */
-               QDIO_DBF_TEXT4(0,trace,"inqisntA");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               return 0;
-       }
-
-       /* on VM, we don't poll, so the q is always done here */
-       if (q->siga_sync)
-               return 1;
-       if (q->hydra_gives_outbound_pcis)
-               return 1;
-
-       /* 
-        * at this point we know, that inbound first_to_check
-        * has (probably) not moved (see qdio_inbound_processing) 
-        */
-       if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
-#ifdef CONFIG_QDIO_DEBUG
-               QDIO_DBF_TEXT4(0,trace,"inqisdon");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
-               QDIO_DBF_TEXT4(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-               return 1;
-       } else {
-#ifdef CONFIG_QDIO_DEBUG
-               QDIO_DBF_TEXT4(0,trace,"inqisntd");
-               QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-               sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
-               QDIO_DBF_TEXT4(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-               return 0;
-       }
-}
-
-static void
-qdio_kick_inbound_handler(struct qdio_q *q)
-{
-       int count, start, end, real_end, i;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-#endif
-
-       QDIO_DBF_TEXT4(0,trace,"kickinh");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       start=q->first_element_to_kick;
-       real_end=q->first_to_check;
-       end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
-       i=start;
-       count=0;
-       while (1) {
-               count++;
-               if (i==end)
-                       break;
-               i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
-       }
-
-#ifdef CONFIG_QDIO_DEBUG
-       sprintf(dbf_text,"s=%2xc=%2x",start,count);
-       QDIO_DBF_TEXT4(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
-               q->handler(q->cdev,
-                          QDIO_STATUS_INBOUND_INT|q->error_status_flags,
-                          q->qdio_error,q->siga_error,q->q_no,start,count,
-                          q->int_parm);
-
-       /* for the next time: */
-       q->first_element_to_kick=real_end;
-       q->qdio_error=0;
-       q->siga_error=0;
-       q->error_status_flags=0;
-
-       qdio_perf_stat_inc(&perf_stats.inbound_cnt);
-}
-
-static void
-__tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
-{
-       struct qdio_irq *irq_ptr;
-       struct qdio_q *oq;
-       int i;
-
-       QDIO_DBF_TEXT4(0,trace,"iqinproc");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       /* 
-        * we first want to reserve the q, so that we know, that we don't
-        * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
-        * be set 
-        */
-       if (unlikely(qdio_reserve_q(q))) {
-               qdio_release_q(q);
-               qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
-               /* 
-                * as we might just be about to stop polling, we make
-                * sure that we check again at least once more 
-                */
-               tiqdio_sched_tl();
-               return;
-       }
-       qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs);
-       if (unlikely(atomic_read(&q->is_in_shutdown))) {
-               qdio_unmark_q(q);
-               goto out;
-       }
-
-       /* 
-        * we reset spare_ind_was_set, when the queue does not use the
-        * spare indicator
-        */
-       if (spare_ind_was_set)
-               spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
-
-       if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
-               goto out;
-       /*
-        * q->dev_st_chg_ind is the indicator, be it shared or not.
-        * only clear it, if indicator is non-shared
-        */
-       if (q->dev_st_chg_ind != &spare_indicator)
-               tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
-
-       if (q->hydra_gives_outbound_pcis) {
-               if (!q->siga_sync_done_on_thinints) {
-                       SYNC_MEMORY_ALL;
-               } else if (!q->siga_sync_done_on_outb_tis) {
-                       SYNC_MEMORY_ALL_OUTB;
-               }
-       } else {
-               SYNC_MEMORY;
-       }
-       /*
-        * maybe we have to do work on our outbound queues... at least
-        * we have to check the outbound-int-capable thinint-capable
-        * queues
-        */
-       if (q->hydra_gives_outbound_pcis) {
-               irq_ptr = (struct qdio_irq*)q->irq_ptr;
-               for (i=0;i<irq_ptr->no_output_qs;i++) {
-                       oq = irq_ptr->output_qs[i];
-                       if (!qdio_is_outbound_q_done(oq)) {
-                               qdio_perf_stat_dec(&perf_stats.tl_runs);
-                               __qdio_outbound_processing(oq);
-                       }
-               }
-       }
-
-       if (!qdio_has_inbound_q_moved(q))
-               goto out;
-
-       qdio_kick_inbound_handler(q);
-       if (tiqdio_is_inbound_q_done(q))
-               if (!qdio_stop_polling(q)) {
-                       /* 
-                        * we set the flags to get into the stuff next time,
-                        * see also comment in qdio_stop_polling 
-                        */
-                       tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
-                       tiqdio_sched_tl();
-               }
-out:
-       qdio_release_q(q);
-}
-
-static void
-tiqdio_inbound_processing(unsigned long q)
-{
-       __tiqdio_inbound_processing((struct qdio_q *) q,
-                                   atomic_read(&spare_indicator_usecount));
-}
-
-static void
-__qdio_inbound_processing(struct qdio_q *q)
-{
-       int q_laps=0;
-
-       QDIO_DBF_TEXT4(0,trace,"qinproc");
-       QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
-
-       if (unlikely(qdio_reserve_q(q))) {
-               qdio_release_q(q);
-               qdio_perf_stat_inc(&perf_stats.inbound_tl_runs_resched);
-               /* as we're sissies, we'll check next time */
-               if (likely(!atomic_read(&q->is_in_shutdown))) {
-                       qdio_mark_q(q);
-                       QDIO_DBF_TEXT4(0,trace,"busy,agn");
-               }
-               return;
-       }
-       qdio_perf_stat_inc(&perf_stats.inbound_tl_runs);
-       qdio_perf_stat_inc(&perf_stats.tl_runs);
-
-again:
-       if (qdio_has_inbound_q_moved(q)) {
-               qdio_kick_inbound_handler(q);
-               if (!qdio_stop_polling(q)) {
-                       q_laps++;
-                       if (q_laps<QDIO_Q_LAPS) 
-                               goto again;
-               }
-               qdio_mark_q(q);
-       } else {
-               if (!qdio_is_inbound_q_done(q)) 
-                        /* means poll time is not yet over */
-                       qdio_mark_q(q);
-       }
-
-       qdio_release_q(q);
-}
-
-static void
-qdio_inbound_processing(unsigned long q)
-{
-       __qdio_inbound_processing((struct qdio_q *) q);
-}
-
-/************************* MAIN ROUTINES *******************************/
-
-#ifdef QDIO_USE_PROCESSING_STATE
-static int
-tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
-{
-       if (!q) {
-               tiqdio_sched_tl();
-               return 0;
-       }
-
-       /* 
-        * under VM, we have not used the PROCESSING state, so no
-        * need to stop polling 
-        */
-       if (q->siga_sync)
-               return 2;
-
-       if (unlikely(qdio_reserve_q(q))) {
-               qdio_release_q(q);
-               qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
-               /* 
-                * as we might just be about to stop polling, we make
-                * sure that we check again at least once more 
-                */
-               
-               /* 
-                * sanity -- we'd get here without setting the
-                * dev st chg ind 
-                */
-               tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
-               tiqdio_sched_tl();
-               return 0;
-       }
-       if (qdio_stop_polling(q)) {
-               qdio_release_q(q);
-               return 2;
-       }               
-       if (q_laps<QDIO_Q_LAPS-1) {
-               qdio_release_q(q);
-               return 3;
-       }
-       /* 
-        * we set the flags to get into the stuff
-        * next time, see also comment in qdio_stop_polling 
-        */
-       tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
-       tiqdio_sched_tl();
-       qdio_release_q(q);
-       return 1;
-       
-}
-#endif /* QDIO_USE_PROCESSING_STATE */
-
-static void
-tiqdio_inbound_checks(void)
-{
-       struct qdio_q *q;
-       int spare_ind_was_set=0;
-#ifdef QDIO_USE_PROCESSING_STATE
-       int q_laps=0;
-#endif /* QDIO_USE_PROCESSING_STATE */
-
-       QDIO_DBF_TEXT4(0,trace,"iqdinbck");
-       QDIO_DBF_TEXT5(0,trace,"iqlocsum");
-
-#ifdef QDIO_USE_PROCESSING_STATE
-again:
-#endif /* QDIO_USE_PROCESSING_STATE */
-
-       /* when the spare indicator is used and set, save that and clear it */
-       if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
-               spare_ind_was_set = 1;
-               tiqdio_clear_summary_bit((__u32*)&spare_indicator);
-       }
-
-       q=(struct qdio_q*)tiq_list;
-       do {
-               if (!q)
-                       break;
-               __tiqdio_inbound_processing(q, spare_ind_was_set);
-               q=(struct qdio_q*)q->list_next;
-       } while (q!=(struct qdio_q*)tiq_list);
-
-#ifdef QDIO_USE_PROCESSING_STATE
-       q=(struct qdio_q*)tiq_list;
-       do {
-               int ret;
-
-               ret = tiqdio_reset_processing_state(q, q_laps);
-               switch (ret) {
-               case 0:
-                       return;
-               case 1:
-                       q_laps++;
-               case 2:
-                       q = (struct qdio_q*)q->list_next;
-                       break;
-               default:
-                       q_laps++;
-                       goto again;
-               }
-       } while (q!=(struct qdio_q*)tiq_list);
-#endif /* QDIO_USE_PROCESSING_STATE */
-}
-
-static void
-tiqdio_tl(unsigned long data)
-{
-       QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
-
-       qdio_perf_stat_inc(&perf_stats.tl_runs);
-
-       tiqdio_inbound_checks();
-}
-
-/********************* GENERAL HELPER_ROUTINES ***********************/
-
-static void
-qdio_release_irq_memory(struct qdio_irq *irq_ptr)
-{
-       int i;
-       struct qdio_q *q;
-
-       for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
-               q = irq_ptr->input_qs[i];
-               if (q) {
-                       free_page((unsigned long) q->slib);
-                       kmem_cache_free(qdio_q_cache, q);
-               }
-               q = irq_ptr->output_qs[i];
-               if (q) {
-                       free_page((unsigned long) q->slib);
-                       kmem_cache_free(qdio_q_cache, q);
-               }
-       }
-       free_page((unsigned long) irq_ptr->qdr);
-       free_page((unsigned long) irq_ptr);
-}
-
-static void
-qdio_set_impl_params(struct qdio_irq *irq_ptr,
-                    unsigned int qib_param_field_format,
-                    /* pointer to 128 bytes or NULL, if no param field */
-                    unsigned char *qib_param_field,
-                    /* pointer to no_queues*128 words of data or NULL */
-                    unsigned int no_input_qs,
-                    unsigned int no_output_qs,
-                    unsigned long *input_slib_elements,
-                    unsigned long *output_slib_elements)
-{
-       int i,j;
-
-       if (!irq_ptr)
-               return;
-
-       irq_ptr->qib.pfmt=qib_param_field_format;
-       if (qib_param_field)
-               memcpy(irq_ptr->qib.parm,qib_param_field,
-                      QDIO_MAX_BUFFERS_PER_Q);
-
-       if (input_slib_elements)
-               for (i=0;i<no_input_qs;i++) {
-                       for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
-                               irq_ptr->input_qs[i]->slib->slibe[j].parms=
-                                       input_slib_elements[
-                                               i*QDIO_MAX_BUFFERS_PER_Q+j];
-               }
-       if (output_slib_elements)
-               for (i=0;i<no_output_qs;i++) {
-                       for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
-                               irq_ptr->output_qs[i]->slib->slibe[j].parms=
-                                       output_slib_elements[
-                                               i*QDIO_MAX_BUFFERS_PER_Q+j];
-               }
-}
-
-static int
-qdio_alloc_qs(struct qdio_irq *irq_ptr,
-             int no_input_qs, int no_output_qs)
-{
-       int i;
-       struct qdio_q *q;
-
-       for (i = 0; i < no_input_qs; i++) {
-               q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
-               if (!q)
-                       return -ENOMEM;
-               memset(q, 0, sizeof(*q));
-
-               q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
-               if (!q->slib) {
-                       kmem_cache_free(qdio_q_cache, q);
-                       return -ENOMEM;
-               }
-               irq_ptr->input_qs[i]=q;
-       }
-
-       for (i = 0; i < no_output_qs; i++) {
-               q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
-               if (!q)
-                       return -ENOMEM;
-               memset(q, 0, sizeof(*q));
-
-               q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
-               if (!q->slib) {
-                       kmem_cache_free(qdio_q_cache, q);
-                       return -ENOMEM;
-               }
-               irq_ptr->output_qs[i]=q;
-       }
-       return 0;
-}
-
-static void
-qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
-                    int no_input_qs, int no_output_qs,
-            qdio_handler_t *input_handler,
-            qdio_handler_t *output_handler,
-            unsigned long int_parm,int q_format,
-            unsigned long flags,
-            void **inbound_sbals_array,
-            void **outbound_sbals_array)
-{
-       struct qdio_q *q;
-       int i,j;
-       char dbf_text[20]; /* see qdio_initialize */
-       void *ptr;
-       int available;
-
-       sprintf(dbf_text,"qfqs%4x",cdev->private->schid.sch_no);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       for (i=0;i<no_input_qs;i++) {
-               q=irq_ptr->input_qs[i];
-
-               memset(q,0,((char*)&q->slib)-((char*)q));
-               sprintf(dbf_text,"in-q%4x",i);
-               QDIO_DBF_TEXT0(0,setup,dbf_text);
-               QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
-
-               memset(q->slib,0,PAGE_SIZE);
-               q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
-
-               available=0;
-
-               for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
-                       q->sbal[j]=*(inbound_sbals_array++);
-
-                q->queue_type=q_format;
-               q->int_parm=int_parm;
-               q->schid = irq_ptr->schid;
-               q->irq_ptr = irq_ptr;
-               q->cdev = cdev;
-               q->mask=1<<(31-i);
-               q->q_no=i;
-               q->is_input_q=1;
-               q->first_to_check=0;
-               q->last_move_ftc=0;
-               q->handler=input_handler;
-               q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
-
-               /* q->is_thinint_q isn't valid at this time, but
-                * irq_ptr->is_thinint_irq is
-                */
-               if (irq_ptr->is_thinint_irq)
-                       tasklet_init(&q->tasklet, tiqdio_inbound_processing,
-                                    (unsigned long) q);
-               else
-                       tasklet_init(&q->tasklet, qdio_inbound_processing,
-                                    (unsigned long) q);
-
-               /* actually this is not used for inbound queues. yet. */
-               atomic_set(&q->busy_siga_counter,0);
-               q->timing.busy_start=0;
-
-/*             for (j=0;j<QDIO_STATS_NUMBER;j++)
-                       q->timing.last_transfer_times[j]=(qdio_get_micros()/
-                                                         QDIO_STATS_NUMBER)*j;
-               q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
-*/
-
-               /* fill in slib */
-               if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
-                                (unsigned long)(q->slib);
-               q->slib->sla=(unsigned long)(q->sl);
-               q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
-
-               /* fill in sl */
-               for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
-                       q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
-
-               QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
-               ptr=(void*)q->sl;
-               QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
-               ptr=(void*)&q->slsb;
-               QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
-               ptr=(void*)q->sbal[0];
-               QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
-
-               /* fill in slsb */
-               if (!irq_ptr->is_qebsm) {
-                        unsigned int count = 1;
-                        for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
-                                set_slsb(q, &j, SLSB_P_INPUT_NOT_INIT, &count);
-                }
-       }
-
-       for (i=0;i<no_output_qs;i++) {
-               q=irq_ptr->output_qs[i];
-               memset(q,0,((char*)&q->slib)-((char*)q));
-
-               sprintf(dbf_text,"outq%4x",i);
-               QDIO_DBF_TEXT0(0,setup,dbf_text);
-               QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
-
-               memset(q->slib,0,PAGE_SIZE);
-               q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
-
-               available=0;
-               
-               for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
-                       q->sbal[j]=*(outbound_sbals_array++);
-
-                q->queue_type=q_format;
-               if ((q->queue_type == QDIO_IQDIO_QFMT) &&
-                   (no_output_qs > 1) &&
-                   (i == no_output_qs-1))
-                       q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;
-               q->int_parm=int_parm;
-               q->is_input_q=0;
-               q->is_pci_out = 0;
-               q->schid = irq_ptr->schid;
-               q->cdev = cdev;
-               q->irq_ptr = irq_ptr;
-               q->mask=1<<(31-i);
-               q->q_no=i;
-               q->first_to_check=0;
-               q->last_move_ftc=0;
-               q->handler=output_handler;
-
-               tasklet_init(&q->tasklet, qdio_outbound_processing,
-                            (unsigned long) q);
-               setup_timer(&q->timer, qdio_outbound_processing,
-                           (unsigned long) q);
-
-               atomic_set(&q->busy_siga_counter,0);
-               q->timing.busy_start=0;
-
-               /* fill in slib */
-               if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
-                                (unsigned long)(q->slib);
-               q->slib->sla=(unsigned long)(q->sl);
-               q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
-
-               /* fill in sl */
-               for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
-                       q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
-
-               QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
-               ptr=(void*)q->sl;
-               QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
-               ptr=(void*)&q->slsb;
-               QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
-               ptr=(void*)q->sbal[0];
-               QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
-
-               /* fill in slsb */
-                if (!irq_ptr->is_qebsm) {
-                        unsigned int count = 1;
-                        for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
-                                set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count);
-                }
-       }
-}
-
-static void
-qdio_fill_thresholds(struct qdio_irq *irq_ptr,
-                    unsigned int no_input_qs,
-                    unsigned int no_output_qs,
-                    unsigned int min_input_threshold,
-                    unsigned int max_input_threshold,
-                    unsigned int min_output_threshold,
-                    unsigned int max_output_threshold)
-{
-       int i;
-       struct qdio_q *q;
-
-       for (i=0;i<no_input_qs;i++) {
-               q=irq_ptr->input_qs[i];
-               q->timing.threshold=max_input_threshold;
-/*             for (j=0;j<QDIO_STATS_CLASSES;j++) {
-                       q->threshold_classes[j].threshold=
-                               min_input_threshold+
-                               (max_input_threshold-min_input_threshold)/
-                               QDIO_STATS_CLASSES;
-               }
-               qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
-       }
-       for (i=0;i<no_output_qs;i++) {
-               q=irq_ptr->output_qs[i];
-               q->timing.threshold=max_output_threshold;
-/*             for (j=0;j<QDIO_STATS_CLASSES;j++) {
-                       q->threshold_classes[j].threshold=
-                               min_output_threshold+
-                               (max_output_threshold-min_output_threshold)/
-                               QDIO_STATS_CLASSES;
-               }
-               qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
-       }
-}
-
-static void tiqdio_thinint_handler(void *ind, void *drv_data)
-{
-       QDIO_DBF_TEXT4(0,trace,"thin_int");
-
-       qdio_perf_stat_inc(&perf_stats.thinints);
-
-       /* SVS only when needed:
-        * issue SVS to benefit from iqdio interrupt avoidance
-        * (SVS clears AISOI)*/
-       if (!omit_svs)
-               tiqdio_clear_global_summary();
-
-       tiqdio_inbound_checks();
-}
-
-static void
-qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
-{
-       int i;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15];
-
-       QDIO_DBF_TEXT5(0,trace,"newstate");
-       sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state);
-       QDIO_DBF_TEXT5(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       irq_ptr->state=state;
-       for (i=0;i<irq_ptr->no_input_qs;i++)
-               irq_ptr->input_qs[i]->state=state;
-       for (i=0;i<irq_ptr->no_output_qs;i++)
-               irq_ptr->output_qs[i]->state=state;
-       mb();
-}
-
-static void
-qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
-{
-       char dbf_text[15];
-
-       if (irb->esw.esw0.erw.cons) {
-               sprintf(dbf_text,"sens%4x",schid.sch_no);
-               QDIO_DBF_TEXT2(1,trace,dbf_text);
-               QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
-
-               QDIO_PRINT_WARN("sense data available on qdio channel.\n");
-               QDIO_HEXDUMP16(WARN,"irb: ",irb);
-               QDIO_HEXDUMP16(WARN,"sense data: ",irb->ecw);
-       }
-               
-}
-
-static void
-qdio_handle_pci(struct qdio_irq *irq_ptr)
-{
-       int i;
-       struct qdio_q *q;
-
-       qdio_perf_stat_inc(&perf_stats.pcis);
-       for (i=0;i<irq_ptr->no_input_qs;i++) {
-               q=irq_ptr->input_qs[i];
-               if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
-                       qdio_mark_q(q);
-               else {
-                       qdio_perf_stat_dec(&perf_stats.tl_runs);
-                       __qdio_inbound_processing(q);
-               }
-       }
-       if (!irq_ptr->hydra_gives_outbound_pcis)
-               return;
-       for (i=0;i<irq_ptr->no_output_qs;i++) {
-               q=irq_ptr->output_qs[i];
-               if (qdio_is_outbound_q_done(q))
-                       continue;
-               qdio_perf_stat_dec(&perf_stats.tl_runs);
-               if (!irq_ptr->sync_done_on_outb_pcis)
-                       SYNC_MEMORY;
-               __qdio_outbound_processing(q);
-       }
-}
-
-static void qdio_establish_handle_irq(struct ccw_device*, int, int);
-
-static void
-qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
-                          int cstat, int dstat)
-{
-       struct qdio_irq *irq_ptr;
-       struct qdio_q *q;
-       char dbf_text[15];
-
-       irq_ptr = cdev->private->qdio_data;
-
-       QDIO_DBF_TEXT2(1, trace, "ick2");
-       sprintf(dbf_text,"%s", cdev->dev.bus_id);
-       QDIO_DBF_TEXT2(1,trace,dbf_text);
-       QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
-       QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
-       QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
-       QDIO_PRINT_ERR("received check condition on activate " \
-                      "queues on device %s (cs=x%x, ds=x%x).\n",
-                      cdev->dev.bus_id, cstat, dstat);
-       if (irq_ptr->no_input_qs) {
-               q=irq_ptr->input_qs[0];
-       } else if (irq_ptr->no_output_qs) {
-               q=irq_ptr->output_qs[0];
-       } else {
-               QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
-                              cdev->dev.bus_id);
-               goto omit_handler_call;
-       }
-       q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
-                  QDIO_STATUS_LOOK_FOR_ERROR,
-                  0,0,0,-1,-1,q->int_parm);
-omit_handler_call:
-       qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
-
-}
-
-static void
-qdio_call_shutdown(struct work_struct *work)
-{
-       struct ccw_device_private *priv;
-       struct ccw_device *cdev;
-
-       priv = container_of(work, struct ccw_device_private, kick_work);
-       cdev = priv->cdev;
-       qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
-       put_device(&cdev->dev);
-}
-
-static void
-qdio_timeout_handler(struct ccw_device *cdev)
-{
-       struct qdio_irq *irq_ptr;
-       char dbf_text[15];
-
-       QDIO_DBF_TEXT2(0, trace, "qtoh");
-       sprintf(dbf_text, "%s", cdev->dev.bus_id);
-       QDIO_DBF_TEXT2(0, trace, dbf_text);
-
-       irq_ptr = cdev->private->qdio_data;
-       sprintf(dbf_text, "state:%d", irq_ptr->state);
-       QDIO_DBF_TEXT2(0, trace, dbf_text);
-
-       switch (irq_ptr->state) {
-       case QDIO_IRQ_STATE_INACTIVE:
-               QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
-                              irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
-               QDIO_DBF_TEXT2(1,setup,"eq:timeo");
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
-               break;
-       case QDIO_IRQ_STATE_CLEANUP:
-               QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
-                               "irq=0.%x.%x.\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
-               break;
-       case QDIO_IRQ_STATE_ESTABLISHED:
-       case QDIO_IRQ_STATE_ACTIVE:
-               /* I/O has been terminated by common I/O layer. */
-               QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
-               QDIO_DBF_TEXT2(1, trace, "cio:term");
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
-               if (get_device(&cdev->dev)) {
-                       /* Can't call shutdown from interrupt context. */
-                       PREPARE_WORK(&cdev->private->kick_work,
-                                    qdio_call_shutdown);
-                       queue_work(ccw_device_work, &cdev->private->kick_work);
-               }
-               break;
-       default:
-               BUG();
-       }
-       wake_up(&cdev->private->wait_q);
-}
-
-static void
-qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
-{
-       struct qdio_irq *irq_ptr;
-       int cstat,dstat;
-       char dbf_text[15];
-
-#ifdef CONFIG_QDIO_DEBUG
-       QDIO_DBF_TEXT4(0, trace, "qint");
-       sprintf(dbf_text, "%s", cdev->dev.bus_id);
-       QDIO_DBF_TEXT4(0, trace, dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-       
-       if (!intparm) {
-               QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
-                                 "handler, device %s\n", cdev->dev.bus_id);
-               return;
-       }
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr) {
-               QDIO_DBF_TEXT2(1, trace, "uint");
-               sprintf(dbf_text,"%s", cdev->dev.bus_id);
-               QDIO_DBF_TEXT2(1,trace,dbf_text);
-               QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
-                              cdev->dev.bus_id);
-               return;
-       }
-
-       if (IS_ERR(irb)) {
-               /* Currently running i/o is in error. */
-               switch (PTR_ERR(irb)) {
-               case -EIO:
-                       QDIO_PRINT_ERR("i/o error on device %s\n",
-                                      cdev->dev.bus_id);
-                       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
-                       wake_up(&cdev->private->wait_q);
-                       return;
-               case -ETIMEDOUT:
-                       qdio_timeout_handler(cdev);
-                       return;
-               default:
-                       QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
-                                      PTR_ERR(irb), cdev->dev.bus_id);
-                       return;
-               }
-       }
-
-       qdio_irq_check_sense(irq_ptr->schid, irb);
-
-#ifdef CONFIG_QDIO_DEBUG
-       sprintf(dbf_text, "state:%d", irq_ptr->state);
-       QDIO_DBF_TEXT4(0, trace, dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       cstat = irb->scsw.cmd.cstat;
-       dstat = irb->scsw.cmd.dstat;
-
-       switch (irq_ptr->state) {
-       case QDIO_IRQ_STATE_INACTIVE:
-               qdio_establish_handle_irq(cdev, cstat, dstat);
-               break;
-
-       case QDIO_IRQ_STATE_CLEANUP:
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
-               break;
-
-       case QDIO_IRQ_STATE_ESTABLISHED:
-       case QDIO_IRQ_STATE_ACTIVE:
-               if (cstat & SCHN_STAT_PCI) {
-                       qdio_handle_pci(irq_ptr);
-                       break;
-               }
-
-               if ((cstat&~SCHN_STAT_PCI)||dstat) {
-                       qdio_handle_activate_check(cdev, intparm, cstat, dstat);
-                       break;
-               }
-       default:
-               QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
-                              "device %s?!\n",
-                              irq_ptr->state, cdev->dev.bus_id);
-       }
-       wake_up(&cdev->private->wait_q);
-
-}
-
-int
-qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
-                unsigned int queue_number)
-{
-       int cc = 0;
-       struct qdio_q *q;
-       struct qdio_irq *irq_ptr;
-       void *ptr;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[15]="SyncXXXX";
-#endif
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -ENODEV;
-
-#ifdef CONFIG_QDIO_DEBUG
-       *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no;
-       QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
-       *((int*)(&dbf_text[0]))=flags;
-       *((int*)(&dbf_text[4]))=queue_number;
-       QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if (flags&QDIO_FLAG_SYNC_INPUT) {
-               q=irq_ptr->input_qs[queue_number];
-               if (!q)
-                       return -EINVAL;
-               if (!(irq_ptr->is_qebsm))
-                       cc = do_siga_sync(q->schid, 0, q->mask);
-       } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
-               q=irq_ptr->output_qs[queue_number];
-               if (!q)
-                       return -EINVAL;
-               if (!(irq_ptr->is_qebsm))
-                       cc = do_siga_sync(q->schid, q->mask, 0);
-       } else 
-               return -EINVAL;
-
-       ptr=&cc;
-       if (cc)
-               QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
-
-       return cc;
-}
-
-static int
-qdio_get_ssqd_information(struct subchannel_id *schid,
-                         struct qdio_chsc_ssqd **ssqd_area)
-{
-       int result;
-
-       QDIO_DBF_TEXT0(0, setup, "getssqd");
-       *ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
-       if (!ssqd_area) {
-               QDIO_PRINT_WARN("Could not get memory for chsc on sch x%x.\n",
-                               schid->sch_no);
-               return -ENOMEM;
-       }
-
-       (*ssqd_area)->request = (struct chsc_header) {
-               .length = 0x0010,
-               .code   = 0x0024,
-       };
-       (*ssqd_area)->first_sch = schid->sch_no;
-       (*ssqd_area)->last_sch = schid->sch_no;
-       (*ssqd_area)->ssid = schid->ssid;
-       result = chsc(*ssqd_area);
-
-       if (result) {
-               QDIO_PRINT_WARN("CHSC returned cc %i on sch 0.%x.%x.\n",
-                               result, schid->ssid, schid->sch_no);
-               goto out;
-       }
-
-       if ((*ssqd_area)->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
-               QDIO_PRINT_WARN("CHSC response is 0x%x on sch 0.%x.%x.\n",
-                               (*ssqd_area)->response.code,
-                               schid->ssid, schid->sch_no);
-               goto out;
-       }
-       if (!((*ssqd_area)->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
-           !((*ssqd_area)->flags & CHSC_FLAG_VALIDITY) ||
-           ((*ssqd_area)->sch != schid->sch_no)) {
-               QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
-                               "using all SIGAs.\n",
-                               schid->ssid, schid->sch_no);
-               goto out;
-       }
-       return 0;
-out:
-       return -EINVAL;
-}
-
-int
-qdio_get_ssqd_pct(struct ccw_device *cdev)
-{
-       struct qdio_chsc_ssqd *ssqd_area;
-       struct subchannel_id schid;
-       char dbf_text[15];
-       int rc;
-       int pct = 0;
-
-       QDIO_DBF_TEXT0(0, setup, "getpct");
-       schid = ccw_device_get_subchannel_id(cdev);
-       rc = qdio_get_ssqd_information(&schid, &ssqd_area);
-       if (!rc)
-               pct = (int)ssqd_area->pct;
-       if (rc != -ENOMEM)
-               mempool_free(ssqd_area, qdio_mempool_scssc);
-       sprintf(dbf_text, "pct: %d", pct);
-       QDIO_DBF_TEXT2(0, setup, dbf_text);
-       return pct;
-}
-EXPORT_SYMBOL(qdio_get_ssqd_pct);
-
-static void
-qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned long token)
-{
-       struct qdio_q *q;
-       int i;
-       unsigned int count, start_buf;
-       char dbf_text[15];
-
-       /*check if QEBSM is disabled */
-       if (!(irq_ptr->is_qebsm) || !(irq_ptr->qdioac & 0x01)) {
-               irq_ptr->is_qebsm  = 0;
-               irq_ptr->sch_token = 0;
-               irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
-               QDIO_DBF_TEXT0(0,setup,"noV=V");
-               return;
-       }
-       irq_ptr->sch_token = token;
-       /*input queue*/
-       for (i = 0; i < irq_ptr->no_input_qs;i++) {
-               q = irq_ptr->input_qs[i];
-               count = QDIO_MAX_BUFFERS_PER_Q;
-               start_buf = 0;
-               set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count);
-       }
-       sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       sprintf(dbf_text,"%8lx",irq_ptr->sch_token);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       /*output queue*/
-       for (i = 0; i < irq_ptr->no_output_qs; i++) {
-               q = irq_ptr->output_qs[i];
-               count = QDIO_MAX_BUFFERS_PER_Q;
-               start_buf = 0;
-               set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count);
-       }
-}
-
-static void
-qdio_get_ssqd_siga(struct qdio_irq *irq_ptr)
-{
-       int rc;
-       struct qdio_chsc_ssqd *ssqd_area;
-
-       QDIO_DBF_TEXT0(0,setup,"getssqd");
-       irq_ptr->qdioac = 0;
-       rc = qdio_get_ssqd_information(&irq_ptr->schid, &ssqd_area);
-       if (rc) {
-               QDIO_PRINT_WARN("using all SIGAs for sch x%x.n",
-                       irq_ptr->schid.sch_no);
-               irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
-                                 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
-                                 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
-               irq_ptr->is_qebsm = 0;
-       } else
-               irq_ptr->qdioac = ssqd_area->qdioac1;
-
-       qdio_check_subchannel_qebsm(irq_ptr, ssqd_area->sch_token);
-       if (rc != -ENOMEM)
-               mempool_free(ssqd_area, qdio_mempool_scssc);
-}
-
-static unsigned int
-tiqdio_check_chsc_availability(void)
-{
-       char dbf_text[15];
-
-       /* Check for bit 41. */
-       if (!css_general_characteristics.aif) {
-               QDIO_PRINT_WARN("Adapter interruption facility not " \
-                               "installed.\n");
-               return -ENOENT;
-       }
-
-       /* Check for bits 107 and 108. */
-       if (!css_chsc_characteristics.scssc ||
-           !css_chsc_characteristics.scsscf) {
-               QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
-                               "not available.\n");
-               return -ENOENT;
-       }
-
-       /* Check for OSA/FCP thin interrupts (bit 67). */
-       hydra_thinints = css_general_characteristics.aif_osa;
-       sprintf(dbf_text,"hydrati%1x", hydra_thinints);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-
-#ifdef CONFIG_64BIT
-       /* Check for QEBSM support in general (bit 58). */
-       is_passthrough = css_general_characteristics.qebsm;
-#endif
-       sprintf(dbf_text,"cssQBS:%1x", is_passthrough);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-
-       /* Check for aif time delay disablement fac (bit 56). If installed,
-        * omit svs even under lpar (good point by rick again) */
-       omit_svs = css_general_characteristics.aif_tdd;
-       sprintf(dbf_text,"omitsvs%1x", omit_svs);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       return 0;
-}
-
-
-static unsigned int
-tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
-{
-       unsigned long real_addr_local_summary_bit;
-       unsigned long real_addr_dev_st_chg_ind;
-       void *ptr;
-       char dbf_text[15];
-
-       unsigned int resp_code;
-       int result;
-
-       struct {
-               struct chsc_header request;
-               u16 operation_code;
-               u16 reserved1;
-               u32 reserved2;
-               u32 reserved3;
-               u64 summary_indicator_addr;
-               u64 subchannel_indicator_addr;
-               u32 ks:4;
-               u32 kc:4;
-               u32 reserved4:21;
-               u32 isc:3;
-               u32 word_with_d_bit;
-               /* set to 0x10000000 to enable
-                * time delay disablement facility */
-               u32 reserved5;
-               struct subchannel_id schid;
-               u32 reserved6[1004];
-               struct chsc_header response;
-               u32 reserved7;
-       } *scssc_area;
-
-       if (!irq_ptr->is_thinint_irq)
-               return -ENODEV;
-
-       if (reset_to_zero) {
-               real_addr_local_summary_bit=0;
-               real_addr_dev_st_chg_ind=0;
-       } else {
-               real_addr_local_summary_bit=
-                       virt_to_phys((volatile void *)tiqdio_ind);
-               real_addr_dev_st_chg_ind=
-                       virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
-       }
-
-       scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
-       if (!scssc_area) {
-               QDIO_PRINT_WARN("No memory for setting indicators on " \
-                               "subchannel 0.%x.%x.\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
-               return -ENOMEM;
-       }
-       scssc_area->request = (struct chsc_header) {
-               .length = 0x0fe0,
-               .code   = 0x0021,
-       };
-       scssc_area->operation_code = 0;
-
-        scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
-       scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
-       scssc_area->ks = QDIO_STORAGE_KEY;
-       scssc_area->kc = QDIO_STORAGE_KEY;
-       scssc_area->isc = TIQDIO_THININT_ISC;
-       scssc_area->schid = irq_ptr->schid;
-       /* enables the time delay disablement facility. Don't care
-        * whether it is really there (i.e. we haven't checked for
-        * it) */
-       if (css_general_characteristics.aif_tdd)
-               scssc_area->word_with_d_bit = 0x10000000;
-       else
-               QDIO_PRINT_WARN("Time delay disablement facility " \
-                               "not available\n");
-
-       result = chsc(scssc_area);
-       if (result) {
-               QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
-                               "cc=%i.\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result);
-               result = -EIO;
-               goto out;
-       }
-
-       resp_code = scssc_area->response.code;
-       if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
-               QDIO_PRINT_WARN("response upon setting indicators " \
-                               "is 0x%x.\n",resp_code);
-               sprintf(dbf_text,"sidR%4x",resp_code);
-               QDIO_DBF_TEXT1(0,trace,dbf_text);
-               QDIO_DBF_TEXT1(0,setup,dbf_text);
-               ptr=&scssc_area->response;
-               QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
-               result = -EIO;
-               goto out;
-       }
-
-       QDIO_DBF_TEXT2(0,setup,"setscind");
-       QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
-                     sizeof(unsigned long));
-       QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
-       result = 0;
-out:
-       mempool_free(scssc_area, qdio_mempool_scssc);
-       return result;
-
-}
-
-static unsigned int
-tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
-{
-       unsigned int resp_code;
-       int result;
-       void *ptr;
-       char dbf_text[15];
-
-       struct {
-               struct chsc_header request;
-               u16 operation_code;
-               u16 reserved1;
-               u32 reserved2;
-               u32 reserved3;
-               u32 reserved4[2];
-               u32 delay_target;
-               u32 reserved5[1009];
-               struct chsc_header response;
-               u32 reserved6;
-       } *scsscf_area;
-
-       if (!irq_ptr->is_thinint_irq)
-               return -ENODEV;
-
-       scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
-       if (!scsscf_area) {
-               QDIO_PRINT_WARN("No memory for setting delay target on " \
-                               "subchannel 0.%x.%x.\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
-               return -ENOMEM;
-       }
-       scsscf_area->request = (struct chsc_header) {
-               .length = 0x0fe0,
-               .code   = 0x1027,
-       };
-
-       scsscf_area->delay_target = delay_target<<16;
-
-       result=chsc(scsscf_area);
-       if (result) {
-               QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
-                               "cc=%i. Continuing.\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
-                               result);
-               result = -EIO;
-               goto out;
-       }
-
-       resp_code = scsscf_area->response.code;
-       if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
-               QDIO_PRINT_WARN("response upon setting delay target " \
-                               "is 0x%x. Continuing.\n",resp_code);
-               sprintf(dbf_text,"sdtR%4x",resp_code);
-               QDIO_DBF_TEXT1(0,trace,dbf_text);
-               QDIO_DBF_TEXT1(0,setup,dbf_text);
-               ptr=&scsscf_area->response;
-               QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
-       }
-       QDIO_DBF_TEXT2(0,trace,"delytrgt");
-       QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
-       result = 0; /* not critical */
-out:
-       mempool_free(scsscf_area, qdio_mempool_scssc);
-       return result;
-}
-
-int
-qdio_cleanup(struct ccw_device *cdev, int how)
-{
-       struct qdio_irq *irq_ptr;
-       char dbf_text[15];
-       int rc;
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -ENODEV;
-
-       sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no);
-       QDIO_DBF_TEXT1(0,trace,dbf_text);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-
-       rc = qdio_shutdown(cdev, how);
-       if ((rc == 0) || (rc == -EINPROGRESS))
-               rc = qdio_free(cdev);
-       return rc;
-}
-
-int
-qdio_shutdown(struct ccw_device *cdev, int how)
-{
-       struct qdio_irq *irq_ptr;
-       int i;
-       int result = 0;
-       int rc;
-       unsigned long flags;
-       int timeout;
-       char dbf_text[15];
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -ENODEV;
-
-       down(&irq_ptr->setting_up_sema);
-
-       sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no);
-       QDIO_DBF_TEXT1(0,trace,dbf_text);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-
-       /* mark all qs as uninteresting */
-       for (i=0;i<irq_ptr->no_input_qs;i++)
-               atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
-
-       for (i=0;i<irq_ptr->no_output_qs;i++)
-               atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
-
-       tasklet_kill(&tiqdio_tasklet);
-
-       for (i=0;i<irq_ptr->no_input_qs;i++) {
-               qdio_unmark_q(irq_ptr->input_qs[i]);
-               tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
-               wait_event_interruptible_timeout(cdev->private->wait_q,
-                                                !atomic_read(&irq_ptr->
-                                                             input_qs[i]->
-                                                             use_count),
-                                                QDIO_NO_USE_COUNT_TIMEOUT);
-               if (atomic_read(&irq_ptr->input_qs[i]->use_count))
-                       result=-EINPROGRESS;
-       }
-
-       for (i=0;i<irq_ptr->no_output_qs;i++) {
-               tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
-               del_timer(&irq_ptr->output_qs[i]->timer);
-               wait_event_interruptible_timeout(cdev->private->wait_q,
-                                                !atomic_read(&irq_ptr->
-                                                             output_qs[i]->
-                                                             use_count),
-                                                QDIO_NO_USE_COUNT_TIMEOUT);
-               if (atomic_read(&irq_ptr->output_qs[i]->use_count))
-                       result=-EINPROGRESS;
-       }
-
-       /* cleanup subchannel */
-       spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
-       if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
-               rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
-               timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
-       } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
-               rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
-               timeout=QDIO_CLEANUP_HALT_TIMEOUT;
-       } else { /* default behaviour */
-               rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
-               timeout=QDIO_CLEANUP_HALT_TIMEOUT;
-       }
-       if (rc == -ENODEV) {
-               /* No need to wait for device no longer present. */
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
-               spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
-       } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
-               /*
-                * Whoever put another handler there, has to cope with the
-                * interrupt theirself. Might happen if qdio_shutdown was
-                * called on already shutdown queues, but this shouldn't have
-                * bad side effects.
-                */
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
-               spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
-       } else if (rc == 0) {
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
-               spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
-
-               wait_event_interruptible_timeout(cdev->private->wait_q,
-                       irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
-                       irq_ptr->state == QDIO_IRQ_STATE_ERR,
-                       timeout);
-       } else {
-               QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
-                               "device %s\n", result, cdev->dev.bus_id);
-               spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
-               result = rc;
-               goto out;
-       }
-       if (irq_ptr->is_thinint_irq) {
-               qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
-               tiqdio_set_subchannel_ind(irq_ptr,1); 
-                /* reset adapter interrupt indicators */
-       }
-
-       /* exchange int handlers, if necessary */
-       if ((void*)cdev->handler == (void*)qdio_handler)
-               cdev->handler=irq_ptr->original_int_handler;
-
-       /* Ignore errors. */
-       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
-out:
-       up(&irq_ptr->setting_up_sema);
-       return result;
-}
-
-int
-qdio_free(struct ccw_device *cdev)
-{
-       struct qdio_irq *irq_ptr;
-       char dbf_text[15];
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -ENODEV;
-
-       down(&irq_ptr->setting_up_sema);
-
-       sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no);
-       QDIO_DBF_TEXT1(0,trace,dbf_text);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-
-       cdev->private->qdio_data = NULL;
-
-       up(&irq_ptr->setting_up_sema);
-
-       qdio_release_irq_memory(irq_ptr);
-       module_put(THIS_MODULE);
-       return 0;
-}
-
-static void
-qdio_allocate_do_dbf(struct qdio_initialize *init_data)
-{
-       char dbf_text[20]; /* if a printf printed out more than 8 chars */
-
-       sprintf(dbf_text,"qfmt:%x",init_data->q_format);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
-       sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
-       QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
-       QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
-       sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
-       QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
-       QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
-       QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
-       QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
-       QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
-}
-
-static void
-qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
-{
-       irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
-       irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
-
-       irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
-
-       irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
-
-       irq_ptr->qdr->qdf0[i].slsba=
-               (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
-
-       irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
-       irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
-       irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
-       irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
-}
-
-static void
-qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
-                              int j, int iqfmt)
-{
-       irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
-       irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
-
-       irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
-
-       irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
-
-       irq_ptr->qdr->qdf0[i+j].slsba=
-               (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
-
-       irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
-       irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
-       irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
-       irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
-}
-
-
-static void
-qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
-{
-       int i;
-
-       for (i=0;i<irq_ptr->no_input_qs;i++) {
-               irq_ptr->input_qs[i]->siga_sync=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
-               irq_ptr->input_qs[i]->siga_in=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
-               irq_ptr->input_qs[i]->siga_out=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
-               irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
-               irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
-                       irq_ptr->hydra_gives_outbound_pcis;
-               irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
-                       ((irq_ptr->qdioac&
-                         (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
-                          CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
-                        (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
-                         CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
-
-       }
-}
-
-static void
-qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
-{
-       int i;
-
-       for (i=0;i<irq_ptr->no_output_qs;i++) {
-               irq_ptr->output_qs[i]->siga_sync=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
-               irq_ptr->output_qs[i]->siga_in=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
-               irq_ptr->output_qs[i]->siga_out=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
-               irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
-                       irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
-               irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
-                       irq_ptr->hydra_gives_outbound_pcis;
-               irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
-                       ((irq_ptr->qdioac&
-                         (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
-                          CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
-                        (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
-                         CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
-
-       }
-}
-
-static int
-qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
-                                   int dstat)
-{
-       char dbf_text[15];
-       struct qdio_irq *irq_ptr;
-
-       irq_ptr = cdev->private->qdio_data;
-
-       if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
-               sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no);
-               QDIO_DBF_TEXT2(1,trace,dbf_text);
-               QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
-               QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
-               QDIO_PRINT_ERR("received check condition on establish " \
-                              "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
-                              irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
-                              cstat,dstat);
-               qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
-       }
-       
-       if (!(dstat & DEV_STAT_DEV_END)) {
-               QDIO_DBF_TEXT2(1,setup,"eq:no de");
-               QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
-               QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
-               QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
-                              "device end: dstat=%02x, cstat=%02x\n",
-                              irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
-                              dstat, cstat);
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
-               return 1;
-       }
-
-       if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
-               QDIO_DBF_TEXT2(1,setup,"eq:badio");
-               QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
-               QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
-               QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
-                              "the following devstat: dstat=%02x, "
-                              "cstat=%02x\n", irq_ptr->schid.ssid,
-                              irq_ptr->schid.sch_no, dstat, cstat);
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
-               return 1;
-       }
-       return 0;
-}
-
-static void
-qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
-{
-       struct qdio_irq *irq_ptr;
-       char dbf_text[15];
-
-       irq_ptr = cdev->private->qdio_data;
-
-       sprintf(dbf_text,"qehi%4x",cdev->private->schid.sch_no);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_TEXT0(0,trace,dbf_text);
-
-       if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat))
-               return;
-
-       qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
-}
-
-int
-qdio_initialize(struct qdio_initialize *init_data)
-{
-       int rc;
-       char dbf_text[15];
-
-       sprintf(dbf_text,"qini%4x",init_data->cdev->private->schid.sch_no);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_TEXT0(0,trace,dbf_text);
-
-       rc = qdio_allocate(init_data);
-       if (rc == 0) {
-               rc = qdio_establish(init_data);
-               if (rc != 0)
-                       qdio_free(init_data->cdev);
-       }
-
-       return rc;
-}
-
-
-int
-qdio_allocate(struct qdio_initialize *init_data)
-{
-       struct qdio_irq *irq_ptr;
-       char dbf_text[15];
-
-       sprintf(dbf_text,"qalc%4x",init_data->cdev->private->schid.sch_no);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_TEXT0(0,trace,dbf_text);
-       if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
-            (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
-            ((init_data->no_input_qs) && (!init_data->input_handler)) ||
-            ((init_data->no_output_qs) && (!init_data->output_handler)) )
-               return -EINVAL;
-
-       if (!init_data->input_sbal_addr_array)
-               return -EINVAL;
-
-       if (!init_data->output_sbal_addr_array)
-               return -EINVAL;
-
-       qdio_allocate_do_dbf(init_data);
-
-       /* create irq */
-       irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
-
-       QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
-       QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
-
-       if (!irq_ptr) {
-               QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
-               return -ENOMEM;
-       }
-
-       init_MUTEX(&irq_ptr->setting_up_sema);
-
-       /* QDR must be in DMA area since CCW data address is only 32 bit */
-       irq_ptr->qdr = (struct qdr *) __get_free_page(GFP_KERNEL | GFP_DMA);
-       if (!(irq_ptr->qdr)) {
-               free_page((unsigned long) irq_ptr);
-               QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
-               return -ENOMEM;
-               }
-       QDIO_DBF_TEXT0(0,setup,"qdr:");
-       QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
-
-       if (qdio_alloc_qs(irq_ptr,
-                                 init_data->no_input_qs,
-                         init_data->no_output_qs)) {
-               QDIO_PRINT_ERR("queue allocation failed!\n");
-               qdio_release_irq_memory(irq_ptr);
-               return -ENOMEM;
-       }
-
-       init_data->cdev->private->qdio_data = irq_ptr;
-
-       qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
-
-       return 0;
-}
-
-static int qdio_fill_irq(struct qdio_initialize *init_data)
-{
-       int i;
-       char dbf_text[15];
-       struct ciw *ciw;
-       int is_iqdio;
-       struct qdio_irq *irq_ptr;
-
-       irq_ptr = init_data->cdev->private->qdio_data;
-
-       memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
-
-        /* wipes qib.ac, required by ar7063 */
-       memset(irq_ptr->qdr,0,sizeof(struct qdr));
-
-       irq_ptr->int_parm=init_data->int_parm;
-
-       irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
-       irq_ptr->no_input_qs=init_data->no_input_qs;
-       irq_ptr->no_output_qs=init_data->no_output_qs;
-
-       if (init_data->q_format==QDIO_IQDIO_QFMT) {
-               irq_ptr->is_iqdio_irq=1;
-               irq_ptr->is_thinint_irq=1;
-       } else {
-               irq_ptr->is_iqdio_irq=0;
-               irq_ptr->is_thinint_irq=hydra_thinints;
-       }
-       sprintf(dbf_text,"is_i_t%1x%1x",
-               irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
-       QDIO_DBF_TEXT2(0,setup,dbf_text);
-
-       if (irq_ptr->is_thinint_irq) {
-               irq_ptr->dev_st_chg_ind = qdio_get_indicator();
-               QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
-               if (!irq_ptr->dev_st_chg_ind) {
-                       QDIO_PRINT_WARN("no indicator location available " \
-                                       "for irq 0.%x.%x\n",
-                                       irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
-                       qdio_release_irq_memory(irq_ptr);
-                       return -ENOBUFS;
-               }
-       }
-
-       /* defaults */
-       irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
-       irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
-       irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
-       irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
-
-       qdio_fill_qs(irq_ptr, init_data->cdev,
-                    init_data->no_input_qs,
-                    init_data->no_output_qs,
-                    init_data->input_handler,
-                    init_data->output_handler,init_data->int_parm,
-                    init_data->q_format,init_data->flags,
-                    init_data->input_sbal_addr_array,
-                    init_data->output_sbal_addr_array);
-
-       if (!try_module_get(THIS_MODULE)) {
-               QDIO_PRINT_CRIT("try_module_get() failed!\n");
-               qdio_release_irq_memory(irq_ptr);
-               return -EINVAL;
-       }
-
-       qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
-                            init_data->no_output_qs,
-                            init_data->min_input_threshold,
-                            init_data->max_input_threshold,
-                            init_data->min_output_threshold,
-                            init_data->max_output_threshold);
-
-       /* fill in qdr */
-       irq_ptr->qdr->qfmt=init_data->q_format;
-       irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
-       irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
-       irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
-       irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
-
-       irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
-       irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
-
-       /* fill in qib */
-       irq_ptr->is_qebsm = is_passthrough;
-       if (irq_ptr->is_qebsm)
-               irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
-
-       irq_ptr->qib.qfmt=init_data->q_format;
-       if (init_data->no_input_qs)
-               irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
-       if (init_data->no_output_qs)
-               irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
-       memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
-
-       qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
-                            init_data->qib_param_field,
-                            init_data->no_input_qs,
-                            init_data->no_output_qs,
-                            init_data->input_slib_elements,
-                            init_data->output_slib_elements);
-
-       /* first input descriptors, then output descriptors */
-       is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
-       for (i=0;i<init_data->no_input_qs;i++)
-               qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
-
-       for (i=0;i<init_data->no_output_qs;i++)
-               qdio_allocate_fill_output_desc(irq_ptr, i,
-                                              init_data->no_input_qs,
-                                              is_iqdio);
-
-       /* qdr, qib, sls, slsbs, slibs, sbales filled. */
-
-       /* get qdio commands */
-       ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
-       if (!ciw) {
-               QDIO_DBF_TEXT2(1,setup,"no eq");
-               QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
-                               "Trying to use default.\n");
-       } else
-               irq_ptr->equeue = *ciw;
-       ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
-       if (!ciw) {
-               QDIO_DBF_TEXT2(1,setup,"no aq");
-               QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
-                               "Trying to use default.\n");
-       } else
-               irq_ptr->aqueue = *ciw;
-
-       /* Set new interrupt handler. */
-       irq_ptr->original_int_handler = init_data->cdev->handler;
-       init_data->cdev->handler = qdio_handler;
-
-       return 0;
-}
-
-int
-qdio_establish(struct qdio_initialize *init_data)
-{
-       struct qdio_irq *irq_ptr;
-       unsigned long saveflags;
-       int result, result2;
-       struct ccw_device *cdev;
-       char dbf_text[20];
-
-       cdev=init_data->cdev;
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -EINVAL;
-
-       if (cdev->private->state != DEV_STATE_ONLINE)
-               return -EINVAL;
-       
-       down(&irq_ptr->setting_up_sema);
-
-       qdio_fill_irq(init_data);
-
-       /* the thinint CHSC stuff */
-       if (irq_ptr->is_thinint_irq) {
-
-               result = tiqdio_set_subchannel_ind(irq_ptr,0);
-               if (result) {
-                       up(&irq_ptr->setting_up_sema);
-                       qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
-                       return result;
-               }
-               tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
-       }
-
-       sprintf(dbf_text,"qest%4x",cdev->private->schid.sch_no);
-       QDIO_DBF_TEXT0(0,setup,dbf_text);
-       QDIO_DBF_TEXT0(0,trace,dbf_text);
-
-       /* establish q */
-       irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
-       irq_ptr->ccw.flags=CCW_FLAG_SLI;
-       irq_ptr->ccw.count=irq_ptr->equeue.count;
-       irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
-
-       spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
-
-       ccw_device_set_options_mask(cdev, 0);
-       result = ccw_device_start(cdev, &irq_ptr->ccw,
-                               QDIO_DOING_ESTABLISH, 0, 0);
-       if (result) {
-               result2 = ccw_device_start(cdev, &irq_ptr->ccw,
-                                       QDIO_DOING_ESTABLISH, 0, 0);
-               sprintf(dbf_text,"eq:io%4x",result);
-               QDIO_DBF_TEXT2(1,setup,dbf_text);
-               if (result2) {
-                       sprintf(dbf_text,"eq:io%4x",result);
-                       QDIO_DBF_TEXT2(1,setup,dbf_text);
-               }
-               QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
-                               "returned %i, next try returned %i\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
-                               result, result2);
-               result=result2;
-       }
-
-       spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
-
-       if (result) {
-               up(&irq_ptr->setting_up_sema);
-               qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
-               return result;
-       }
-       
-       wait_event_interruptible_timeout(cdev->private->wait_q,
-               irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
-               irq_ptr->state == QDIO_IRQ_STATE_ERR,
-               QDIO_ESTABLISH_TIMEOUT);
-
-       if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
-               result = 0;
-       else {
-               up(&irq_ptr->setting_up_sema);
-               qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
-               return -EIO;
-       }
-
-       qdio_get_ssqd_siga(irq_ptr);
-       /* if this gets set once, we're running under VM and can omit SVSes */
-       if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
-               omit_svs=1;
-
-       sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
-       QDIO_DBF_TEXT2(0,setup,dbf_text);
-
-       sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
-       QDIO_DBF_TEXT2(0,setup,dbf_text);
-
-       irq_ptr->hydra_gives_outbound_pcis=
-               irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
-       irq_ptr->sync_done_on_outb_pcis=
-               irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
-
-       qdio_initialize_set_siga_flags_input(irq_ptr);
-       qdio_initialize_set_siga_flags_output(irq_ptr);
-
-       up(&irq_ptr->setting_up_sema);
-
-       return result;
-       
-}
-
-int
-qdio_activate(struct ccw_device *cdev, int flags)
-{
-       struct qdio_irq *irq_ptr;
-       int i,result=0,result2;
-       unsigned long saveflags;
-       char dbf_text[20]; /* see qdio_initialize */
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -ENODEV;
-
-       if (cdev->private->state != DEV_STATE_ONLINE)
-               return -EINVAL;
-
-       down(&irq_ptr->setting_up_sema);
-       if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
-               result=-EBUSY;
-               goto out;
-       }
-
-       sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no);
-       QDIO_DBF_TEXT2(0,setup,dbf_text);
-       QDIO_DBF_TEXT2(0,trace,dbf_text);
-
-       /* activate q */
-       irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
-       irq_ptr->ccw.flags=CCW_FLAG_SLI;
-       irq_ptr->ccw.count=irq_ptr->aqueue.count;
-       irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
-
-       spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
-
-       ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
-       result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
-                               0, DOIO_DENY_PREFETCH);
-       if (result) {
-               result2=ccw_device_start(cdev,&irq_ptr->ccw,
-                                        QDIO_DOING_ACTIVATE,0,0);
-               sprintf(dbf_text,"aq:io%4x",result);
-               QDIO_DBF_TEXT2(1,setup,dbf_text);
-               if (result2) {
-                       sprintf(dbf_text,"aq:io%4x",result);
-                       QDIO_DBF_TEXT2(1,setup,dbf_text);
-               }
-               QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
-                               "returned %i, next try returned %i\n",
-                               irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
-                               result, result2);
-               result=result2;
-       }
-
-       spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
-       if (result)
-               goto out;
-
-       for (i=0;i<irq_ptr->no_input_qs;i++) {
-               if (irq_ptr->is_thinint_irq) {
-                       /* 
-                        * that way we know, that, if we will get interrupted
-                        * by tiqdio_inbound_processing, qdio_unmark_q will
-                        * not be called 
-                        */
-                       qdio_reserve_q(irq_ptr->input_qs[i]);
-                       qdio_mark_tiq(irq_ptr->input_qs[i]);
-                       qdio_release_q(irq_ptr->input_qs[i]);
-               }
-       }
-
-       if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
-               for (i=0;i<irq_ptr->no_input_qs;i++) {
-                       irq_ptr->input_qs[i]->is_input_q|=
-                               QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
-               }
-       }
-
-       msleep(QDIO_ACTIVATE_TIMEOUT);
-       switch (irq_ptr->state) {
-       case QDIO_IRQ_STATE_STOPPED:
-       case QDIO_IRQ_STATE_ERR:
-               up(&irq_ptr->setting_up_sema);
-               qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
-               down(&irq_ptr->setting_up_sema);
-               result = -EIO;
-               break;
-       default:
-               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
-               result = 0;
-       }
- out:
-       up(&irq_ptr->setting_up_sema);
-
-       return result;
-}
-
-/* buffers filled forwards again to make Rick happy */
-static void
-qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
-                       unsigned int count, struct qdio_buffer *buffers)
-{
-       struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
-       int tmp = 0;
-
-       qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
-       if (irq->is_qebsm) {
-               while (count) {
-                       tmp = set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
-                       if (!tmp)
-                               return;
-               }
-               return;
-       }
-       for (;;) {
-               set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
-               count--;
-               if (!count) break;
-               qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
-       }
-}
-
-static void
-qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
-                        unsigned int count, struct qdio_buffer *buffers)
-{
-       struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
-       int tmp = 0;
-
-       qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
-       if (irq->is_qebsm) {
-               while (count) {
-                       tmp = set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
-                       if (!tmp)
-                               return;
-               }
-               return;
-       }
-
-       for (;;) {
-               set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
-               count--;
-               if (!count) break;
-               qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
-       }
-}
-
-static void
-do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
-                      unsigned int qidx, unsigned int count,
-                      struct qdio_buffer *buffers)
-{
-       int used_elements;
-
-        /* This is the inbound handling of queues */
-       used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
-       
-       qdio_do_qdio_fill_input(q,qidx,count,buffers);
-       
-       if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
-           (callflags&QDIO_FLAG_UNDER_INTERRUPT))
-               atomic_xchg(&q->polling,0);
-       
-       if (used_elements) 
-               return;
-       if (callflags&QDIO_FLAG_DONT_SIGA)
-               return;
-       if (q->siga_in) {
-               int result;
-               
-               result=qdio_siga_input(q);
-               if (result) {
-                       if (q->siga_error)
-                               q->error_status_flags|=
-                                       QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
-                       q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
-                       q->siga_error=result;
-               }
-       }
-               
-       qdio_mark_q(q);
-}
-
-static void
-do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
-                       unsigned int qidx, unsigned int count,
-                       struct qdio_buffer *buffers)
-{
-       int used_elements;
-       unsigned int cnt, start_buf;
-       unsigned char state = 0;
-       struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
-
-       /* This is the outbound handling of queues */
-       qdio_do_qdio_fill_output(q,qidx,count,buffers);
-
-       used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
-
-       if (callflags&QDIO_FLAG_DONT_SIGA) {
-               qdio_perf_stat_inc(&perf_stats.outbound_cnt);
-               return;
-       }
-       if (callflags & QDIO_FLAG_PCI_OUT)
-               q->is_pci_out = 1;
-       else
-               q->is_pci_out = 0;
-       if (q->is_iqdio_q) {
-               /* one siga for every sbal */
-               while (count--)
-                       qdio_kick_outbound_q(q);
-                       
-               __qdio_outbound_processing(q);
-       } else {
-               /* under VM, we do a SIGA sync unconditionally */
-               SYNC_MEMORY;
-               else {
-                       /* 
-                        * w/o shadow queues (else branch of
-                        * SYNC_MEMORY :-/ ), we try to
-                        * fast-requeue buffers 
-                        */
-                       if (irq->is_qebsm) {
-                               cnt = 1;
-                               start_buf = ((qidx+QDIO_MAX_BUFFERS_PER_Q-1) &
-                                            (QDIO_MAX_BUFFERS_PER_Q-1));
-                               qdio_do_eqbs(q, &state, &start_buf, &cnt);
-                       } else
-                               state = q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
-                                       &(QDIO_MAX_BUFFERS_PER_Q-1) ];
-                        if (state != SLSB_CU_OUTPUT_PRIMED) {
-                               qdio_kick_outbound_q(q);
-                       } else {
-                               QDIO_DBF_TEXT3(0,trace, "fast-req");
-                               qdio_perf_stat_inc(&perf_stats.fast_reqs);
-                       }
-               }
-               /* 
-                * only marking the q could take too long,
-                * the upper layer module could do a lot of
-                * traffic in that time 
-                */
-               __qdio_outbound_processing(q);
-       }
-
-       qdio_perf_stat_inc(&perf_stats.outbound_cnt);
-}
-
-/* count must be 1 in iqdio */
-int
-do_QDIO(struct ccw_device *cdev,unsigned int callflags,
-       unsigned int queue_number, unsigned int qidx,
-       unsigned int count,struct qdio_buffer *buffers)
-{
-       struct qdio_irq *irq_ptr;
-#ifdef CONFIG_QDIO_DEBUG
-       char dbf_text[20];
-
-       sprintf(dbf_text,"doQD%04x",cdev->private->schid.sch_no);
-       QDIO_DBF_TEXT3(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
-            (count>QDIO_MAX_BUFFERS_PER_Q) ||
-            (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
-               return -EINVAL;
-
-       if (count==0)
-               return 0;
-
-       irq_ptr = cdev->private->qdio_data;
-       if (!irq_ptr)
-               return -ENODEV;
-
-#ifdef CONFIG_QDIO_DEBUG
-       if (callflags&QDIO_FLAG_SYNC_INPUT)
-               QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
-                             sizeof(void*));
-       else
-               QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
-                             sizeof(void*));
-       sprintf(dbf_text,"flag%04x",callflags);
-       QDIO_DBF_TEXT3(0,trace,dbf_text);
-       sprintf(dbf_text,"qi%02xct%02x",qidx,count);
-       QDIO_DBF_TEXT3(0,trace,dbf_text);
-#endif /* CONFIG_QDIO_DEBUG */
-
-       if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
-               return -EBUSY;
-
-       if (callflags&QDIO_FLAG_SYNC_INPUT)
-               do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
-                                      callflags, qidx, count, buffers);
-       else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
-               do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
-                                       callflags, qidx, count, buffers);
-       else {
-               QDIO_DBF_TEXT3(1,trace,"doQD:inv");
-               return -EINVAL;
-       }
-       return 0;
-}
-
-static int
-qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
-                       int buffer_length, int *eof, void *data)
-{
-        int c=0;
-
-        /* we are always called with buffer_length=4k, so we all
-           deliver on the first read */
-        if (offset>0)
-               return 0;
-
-#define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
-#ifdef CONFIG_64BIT
-       _OUTP_IT("Number of tasklet runs (total)                  : %li\n",
-                (long)atomic64_read(&perf_stats.tl_runs));
-       _OUTP_IT("Inbound tasklet runs      tried/retried         : %li/%li\n",
-                (long)atomic64_read(&perf_stats.inbound_tl_runs),
-                (long)atomic64_read(&perf_stats.inbound_tl_runs_resched));
-       _OUTP_IT("Inbound-thin tasklet runs tried/retried         : %li/%li\n",
-                (long)atomic64_read(&perf_stats.inbound_thin_tl_runs),
-                (long)atomic64_read(&perf_stats.inbound_thin_tl_runs_resched));
-       _OUTP_IT("Outbound tasklet runs     tried/retried         : %li/%li\n",
-                (long)atomic64_read(&perf_stats.outbound_tl_runs),
-                (long)atomic64_read(&perf_stats.outbound_tl_runs_resched));
-       _OUTP_IT("\n");
-       _OUTP_IT("Number of SIGA sync's issued                    : %li\n",
-                (long)atomic64_read(&perf_stats.siga_syncs));
-       _OUTP_IT("Number of SIGA in's issued                      : %li\n",
-                (long)atomic64_read(&perf_stats.siga_ins));
-       _OUTP_IT("Number of SIGA out's issued                     : %li\n",
-                (long)atomic64_read(&perf_stats.siga_outs));
-       _OUTP_IT("Number of PCIs caught                           : %li\n",
-                (long)atomic64_read(&perf_stats.pcis));
-       _OUTP_IT("Number of adapter interrupts caught             : %li\n",
-                (long)atomic64_read(&perf_stats.thinints));
-       _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %li\n",
-                (long)atomic64_read(&perf_stats.fast_reqs));
-       _OUTP_IT("\n");
-       _OUTP_IT("Number of inbound transfers                     : %li\n",
-                (long)atomic64_read(&perf_stats.inbound_cnt));
-       _OUTP_IT("Number of do_QDIOs outbound                     : %li\n",
-                (long)atomic64_read(&perf_stats.outbound_cnt));
-#else /* CONFIG_64BIT */
-       _OUTP_IT("Number of tasklet runs (total)                  : %i\n",
-                atomic_read(&perf_stats.tl_runs));
-       _OUTP_IT("Inbound tasklet runs      tried/retried         : %i/%i\n",
-                atomic_read(&perf_stats.inbound_tl_runs),
-                atomic_read(&perf_stats.inbound_tl_runs_resched));
-       _OUTP_IT("Inbound-thin tasklet runs tried/retried         : %i/%i\n",
-                atomic_read(&perf_stats.inbound_thin_tl_runs),
-                atomic_read(&perf_stats.inbound_thin_tl_runs_resched));
-       _OUTP_IT("Outbound tasklet runs     tried/retried         : %i/%i\n",
-                atomic_read(&perf_stats.outbound_tl_runs),
-                atomic_read(&perf_stats.outbound_tl_runs_resched));
-       _OUTP_IT("\n");
-       _OUTP_IT("Number of SIGA sync's issued                    : %i\n",
-                atomic_read(&perf_stats.siga_syncs));
-       _OUTP_IT("Number of SIGA in's issued                      : %i\n",
-                atomic_read(&perf_stats.siga_ins));
-       _OUTP_IT("Number of SIGA out's issued                     : %i\n",
-                atomic_read(&perf_stats.siga_outs));
-       _OUTP_IT("Number of PCIs caught                           : %i\n",
-                atomic_read(&perf_stats.pcis));
-       _OUTP_IT("Number of adapter interrupts caught             : %i\n",
-                atomic_read(&perf_stats.thinints));
-       _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %i\n",
-                atomic_read(&perf_stats.fast_reqs));
-       _OUTP_IT("\n");
-       _OUTP_IT("Number of inbound transfers                     : %i\n",
-                atomic_read(&perf_stats.inbound_cnt));
-       _OUTP_IT("Number of do_QDIOs outbound                     : %i\n",
-                atomic_read(&perf_stats.outbound_cnt));
-#endif /* CONFIG_64BIT */
-       _OUTP_IT("\n");
-
-        return c;
-}
-
-static struct proc_dir_entry *qdio_perf_proc_file;
-
-static void
-qdio_add_procfs_entry(void)
-{
-        proc_perf_file_registration=0;
-       qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
-                                             S_IFREG|0444,NULL);
-       if (qdio_perf_proc_file) {
-               qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
-       } else proc_perf_file_registration=-1;
-
-        if (proc_perf_file_registration)
-                QDIO_PRINT_WARN("was not able to register perf. " \
-                               "proc-file (%i).\n",
-                               proc_perf_file_registration);
-}
-
-static void
-qdio_remove_procfs_entry(void)
-{
-        if (!proc_perf_file_registration) /* means if it went ok earlier */
-               remove_proc_entry(QDIO_PERF,NULL);
-}
-
-/**
- * attributes in sysfs
- *****************************************************************************/
-
-static ssize_t
-qdio_performance_stats_show(struct bus_type *bus, char *buf)
-{
-       return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
-}
-
-static ssize_t
-qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
-{
-       unsigned long i;
-       int ret;
-
-       ret = strict_strtoul(buf, 16, &i);
-       if (!ret && ((i == 0) || (i == 1))) {
-               if (i == qdio_performance_stats)
-                       return count;
-               qdio_performance_stats = i;
-               if (i==0) {
-                       /* reset perf. stat. info */
-#ifdef CONFIG_64BIT
-                       atomic64_set(&perf_stats.tl_runs, 0);
-                       atomic64_set(&perf_stats.outbound_tl_runs, 0);
-                       atomic64_set(&perf_stats.inbound_tl_runs, 0);
-                       atomic64_set(&perf_stats.inbound_tl_runs_resched, 0);
-                       atomic64_set(&perf_stats.inbound_thin_tl_runs, 0);
-                       atomic64_set(&perf_stats.inbound_thin_tl_runs_resched,
-                                    0);
-                       atomic64_set(&perf_stats.siga_outs, 0);
-                       atomic64_set(&perf_stats.siga_ins, 0);
-                       atomic64_set(&perf_stats.siga_syncs, 0);
-                       atomic64_set(&perf_stats.pcis, 0);
-                       atomic64_set(&perf_stats.thinints, 0);
-                       atomic64_set(&perf_stats.fast_reqs, 0);
-                       atomic64_set(&perf_stats.outbound_cnt, 0);
-                       atomic64_set(&perf_stats.inbound_cnt, 0);
-#else /* CONFIG_64BIT */
-                       atomic_set(&perf_stats.tl_runs, 0);
-                       atomic_set(&perf_stats.outbound_tl_runs, 0);
-                       atomic_set(&perf_stats.inbound_tl_runs, 0);
-                       atomic_set(&perf_stats.inbound_tl_runs_resched, 0);
-                       atomic_set(&perf_stats.inbound_thin_tl_runs, 0);
-                       atomic_set(&perf_stats.inbound_thin_tl_runs_resched, 0);
-                       atomic_set(&perf_stats.siga_outs, 0);
-                       atomic_set(&perf_stats.siga_ins, 0);
-                       atomic_set(&perf_stats.siga_syncs, 0);
-                       atomic_set(&perf_stats.pcis, 0);
-                       atomic_set(&perf_stats.thinints, 0);
-                       atomic_set(&perf_stats.fast_reqs, 0);
-                       atomic_set(&perf_stats.outbound_cnt, 0);
-                       atomic_set(&perf_stats.inbound_cnt, 0);
-#endif /* CONFIG_64BIT */
-               }
-       } else {
-               QDIO_PRINT_ERR("QDIO performance_stats: write 0 or 1 to this file!\n");
-               return -EINVAL;
-       }
-       return count;
-}
-
-static BUS_ATTR(qdio_performance_stats, 0644, qdio_performance_stats_show,
-                       qdio_performance_stats_store);
-
-static void
-tiqdio_register_thinints(void)
-{
-       char dbf_text[20];
-
-       tiqdio_ind =
-               s390_register_adapter_interrupt(&tiqdio_thinint_handler, NULL,
-                                               TIQDIO_THININT_ISC);
-       if (IS_ERR(tiqdio_ind)) {
-               sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_ind));
-               QDIO_DBF_TEXT0(0,setup,dbf_text);
-               QDIO_PRINT_ERR("failed to register adapter handler " \
-                              "(rc=%li).\nAdapter interrupts might " \
-                              "not work. Continuing.\n",
-                              PTR_ERR(tiqdio_ind));
-               tiqdio_ind = NULL;
-       }
-}
-
-static void
-tiqdio_unregister_thinints(void)
-{
-       if (tiqdio_ind)
-               s390_unregister_adapter_interrupt(tiqdio_ind,
-                                                 TIQDIO_THININT_ISC);
-}
-
-static int
-qdio_get_qdio_memory(void)
-{
-       int i;
-       indicator_used[0]=1;
-
-       for (i=1;i<INDICATORS_PER_CACHELINE;i++)
-               indicator_used[i]=0;
-       indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
-                            GFP_KERNEL);
-       if (!indicators)
-               return -ENOMEM;
-       return 0;
-}
-
-static void
-qdio_release_qdio_memory(void)
-{
-       kfree(indicators);
-}
-
-static void
-qdio_unregister_dbf_views(void)
-{
-       if (qdio_dbf_setup)
-               debug_unregister(qdio_dbf_setup);
-       if (qdio_dbf_sbal)
-               debug_unregister(qdio_dbf_sbal);
-       if (qdio_dbf_sense)
-               debug_unregister(qdio_dbf_sense);
-       if (qdio_dbf_trace)
-               debug_unregister(qdio_dbf_trace);
-#ifdef CONFIG_QDIO_DEBUG
-        if (qdio_dbf_slsb_out)
-                debug_unregister(qdio_dbf_slsb_out);
-        if (qdio_dbf_slsb_in)
-                debug_unregister(qdio_dbf_slsb_in);
-#endif /* CONFIG_QDIO_DEBUG */
-}
-
-static int
-qdio_register_dbf_views(void)
-{
-       qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
-                                     QDIO_DBF_SETUP_PAGES,
-                                     QDIO_DBF_SETUP_NR_AREAS,
-                                     QDIO_DBF_SETUP_LEN);
-       if (!qdio_dbf_setup)
-               goto oom;
-       debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
-       debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
-
-       qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
-                                    QDIO_DBF_SBAL_PAGES,
-                                    QDIO_DBF_SBAL_NR_AREAS,
-                                    QDIO_DBF_SBAL_LEN);
-       if (!qdio_dbf_sbal)
-               goto oom;
-
-       debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
-       debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
-
-       qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
-                                     QDIO_DBF_SENSE_PAGES,
-                                     QDIO_DBF_SENSE_NR_AREAS,
-                                     QDIO_DBF_SENSE_LEN);
-       if (!qdio_dbf_sense)
-               goto oom;
-
-       debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
-       debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
-
-       qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
-                                     QDIO_DBF_TRACE_PAGES,
-                                     QDIO_DBF_TRACE_NR_AREAS,
-                                     QDIO_DBF_TRACE_LEN);
-       if (!qdio_dbf_trace)
-               goto oom;
-
-       debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
-       debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
-
-#ifdef CONFIG_QDIO_DEBUG
-        qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
-                                         QDIO_DBF_SLSB_OUT_PAGES,
-                                         QDIO_DBF_SLSB_OUT_NR_AREAS,
-                                         QDIO_DBF_SLSB_OUT_LEN);
-        if (!qdio_dbf_slsb_out)
-               goto oom;
-        debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
-        debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
-
-        qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
-                                        QDIO_DBF_SLSB_IN_PAGES,
-                                        QDIO_DBF_SLSB_IN_NR_AREAS,
-                                        QDIO_DBF_SLSB_IN_LEN);
-        if (!qdio_dbf_slsb_in)
-               goto oom;
-        debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
-        debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
-#endif /* CONFIG_QDIO_DEBUG */
-       return 0;
-oom:
-       QDIO_PRINT_ERR("not enough memory for dbf.\n");
-       qdio_unregister_dbf_views();
-       return -ENOMEM;
-}
-
-static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
-{
-       return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
-}
-
-static void qdio_mempool_free(void *element, void *size)
-{
-       free_page((unsigned long) element);
-}
-
-static int __init
-init_QDIO(void)
-{
-       int res;
-       void *ptr;
-
-       printk("qdio: loading %s\n",version);
-
-       res=qdio_get_qdio_memory();
-       if (res)
-               return res;
-
-       qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
-                                        256, 0, NULL);
-       if (!qdio_q_cache) {
-               qdio_release_qdio_memory();
-               return -ENOMEM;
-       }
-
-       res = qdio_register_dbf_views();
-       if (res) {
-               kmem_cache_destroy(qdio_q_cache);
-               qdio_release_qdio_memory();
-               return res;
-       }
-
-       QDIO_DBF_TEXT0(0,setup,"initQDIO");
-       res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
-
-       memset((void*)&perf_stats,0,sizeof(perf_stats));
-       QDIO_DBF_TEXT0(0,setup,"perfstat");
-       ptr=&perf_stats;
-       QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
-
-       qdio_add_procfs_entry();
-
-       qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
-                                           qdio_mempool_alloc,
-                                           qdio_mempool_free, NULL);
-
-       isc_register(QDIO_AIRQ_ISC);
-       if (tiqdio_check_chsc_availability())
-               QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
-
-       tiqdio_register_thinints();
-
-       return 0;
- }
-
-static void __exit
-cleanup_QDIO(void)
-{
-       tiqdio_unregister_thinints();
-       isc_unregister(QDIO_AIRQ_ISC);
-       qdio_remove_procfs_entry();
-       qdio_release_qdio_memory();
-       qdio_unregister_dbf_views();
-       mempool_destroy(qdio_mempool_scssc);
-       kmem_cache_destroy(qdio_q_cache);
-       bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
-       printk("qdio: %s: module removed\n",version);
-}
-
-module_init(init_QDIO);
-module_exit(cleanup_QDIO);
-
-EXPORT_SYMBOL(qdio_allocate);
-EXPORT_SYMBOL(qdio_establish);
-EXPORT_SYMBOL(qdio_initialize);
-EXPORT_SYMBOL(qdio_activate);
-EXPORT_SYMBOL(do_QDIO);
-EXPORT_SYMBOL(qdio_shutdown);
-EXPORT_SYMBOL(qdio_free);
-EXPORT_SYMBOL(qdio_cleanup);
-EXPORT_SYMBOL(qdio_synchronize);
index 7656081a24d284b33bc893571412e466e21b9585..c1a70985abfaf7d877fa60d4d6f72a78640cf5e9 100644 (file)
@@ -1,66 +1,20 @@
+/*
+ * linux/drivers/s390/cio/qdio.h
+ *
+ * Copyright 2000,2008 IBM Corp.
+ * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
+ *           Jan Glauber <jang@linux.vnet.ibm.com>
+ */
 #ifndef _CIO_QDIO_H
 #define _CIO_QDIO_H
 
 #include <asm/page.h>
-#include <asm/isc.h>
 #include <asm/schid.h>
+#include "chsc.h"
 
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_VERBOSE_LEVEL 9
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_VERBOSE_LEVEL 5
-#endif /* CONFIG_QDIO_DEBUG */
-#define QDIO_USE_PROCESSING_STATE
-
-#define QDIO_MINIMAL_BH_RELIEF_TIME 16
-#define QDIO_TIMER_POLL_VALUE 1
-#define IQDIO_TIMER_POLL_VALUE 1
-
-/*
- * unfortunately this can't be (QDIO_MAX_BUFFERS_PER_Q*4/3) or so -- as
- * we never know, whether we'll get initiative again, e.g. to give the
- * transmit skb's back to the stack, however the stack may be waiting for
- * them... therefore we define 4 as threshold to start polling (which
- * will stop as soon as the asynchronous queue catches up)
- * btw, this only applies to the asynchronous HiperSockets queue
- */
-#define IQDIO_FILL_LEVEL_TO_POLL 4
-
-#define TIQDIO_THININT_ISC QDIO_AIRQ_ISC
-#define TIQDIO_DELAY_TARGET 0
-#define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */
-#define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */
-#define IQDIO_GLOBAL_LAPS 2 /* GLOBAL_LAPS are not used as we */
-#define IQDIO_GLOBAL_LAPS_INT 1 /* don't global summary */
-#define IQDIO_LOCAL_LAPS 4
-#define IQDIO_LOCAL_LAPS_INT 1
-#define IQDIO_GLOBAL_SUMMARY_CC_MASK 2
-/*#define IQDIO_IQDC_INT_PARM 0x1234*/
-
-#define QDIO_Q_LAPS 5
-
-#define QDIO_STORAGE_KEY PAGE_DEFAULT_KEY
-
-#define L2_CACHELINE_SIZE 256
-#define INDICATORS_PER_CACHELINE (L2_CACHELINE_SIZE/sizeof(__u32))
-
-#define QDIO_PERF "qdio_perf"
-
-/* must be a power of 2 */
-/*#define QDIO_STATS_NUMBER 4
-
-#define QDIO_STATS_CLASSES 2
-#define QDIO_STATS_COUNT_NEEDED 2*/
-
-#define QDIO_NO_USE_COUNT_TIMEOUT (1*HZ) /* wait for 1 sec on each q before
-                                           exiting without having use_count
-                                           of the queue to 0 */
-
-#define QDIO_ESTABLISH_TIMEOUT (1*HZ)
-#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
-#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
-#define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)
-#define QDIO_ACTIVATE_TIMEOUT (5) /* 5 ms */
+#define QDIO_BUSY_BIT_PATIENCE         100     /* 100 microseconds */
+#define QDIO_BUSY_BIT_GIVE_UP          2000000 /* 2 seconds = eternity */
+#define QDIO_INPUT_THRESHOLD           500     /* 500 microseconds */
 
 enum qdio_irq_states {
        QDIO_IRQ_STATE_INACTIVE,
@@ -72,565 +26,352 @@ enum qdio_irq_states {
        NR_QDIO_IRQ_STATES,
 };
 
-/* used as intparm in do_IO: */
-#define QDIO_DOING_SENSEID 0
-#define QDIO_DOING_ESTABLISH 1
-#define QDIO_DOING_ACTIVATE 2
-#define QDIO_DOING_CLEANUP 3
-
-/************************* DEBUG FACILITY STUFF *********************/
-
-#define QDIO_DBF_HEX(ex,name,level,addr,len) \
-       do { \
-       if (ex) \
-               debug_exception(qdio_dbf_##name,level,(void*)(addr),len); \
-       else \
-               debug_event(qdio_dbf_##name,level,(void*)(addr),len); \
-       } while (0)
-#define QDIO_DBF_TEXT(ex,name,level,text) \
-       do { \
-       if (ex) \
-               debug_text_exception(qdio_dbf_##name,level,text); \
-       else \
-               debug_text_event(qdio_dbf_##name,level,text); \
-       } while (0)
-
-
-#define QDIO_DBF_HEX0(ex,name,addr,len) QDIO_DBF_HEX(ex,name,0,addr,len)
-#define QDIO_DBF_HEX1(ex,name,addr,len) QDIO_DBF_HEX(ex,name,1,addr,len)
-#define QDIO_DBF_HEX2(ex,name,addr,len) QDIO_DBF_HEX(ex,name,2,addr,len)
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_HEX3(ex,name,addr,len) QDIO_DBF_HEX(ex,name,3,addr,len)
-#define QDIO_DBF_HEX4(ex,name,addr,len) QDIO_DBF_HEX(ex,name,4,addr,len)
-#define QDIO_DBF_HEX5(ex,name,addr,len) QDIO_DBF_HEX(ex,name,5,addr,len)
-#define QDIO_DBF_HEX6(ex,name,addr,len) QDIO_DBF_HEX(ex,name,6,addr,len)
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_HEX3(ex,name,addr,len) do {} while (0)
-#define QDIO_DBF_HEX4(ex,name,addr,len) do {} while (0)
-#define QDIO_DBF_HEX5(ex,name,addr,len) do {} while (0)
-#define QDIO_DBF_HEX6(ex,name,addr,len) do {} while (0)
-#endif /* CONFIG_QDIO_DEBUG */
-
-#define QDIO_DBF_TEXT0(ex,name,text) QDIO_DBF_TEXT(ex,name,0,text)
-#define QDIO_DBF_TEXT1(ex,name,text) QDIO_DBF_TEXT(ex,name,1,text)
-#define QDIO_DBF_TEXT2(ex,name,text) QDIO_DBF_TEXT(ex,name,2,text)
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_TEXT3(ex,name,text) QDIO_DBF_TEXT(ex,name,3,text)
-#define QDIO_DBF_TEXT4(ex,name,text) QDIO_DBF_TEXT(ex,name,4,text)
-#define QDIO_DBF_TEXT5(ex,name,text) QDIO_DBF_TEXT(ex,name,5,text)
-#define QDIO_DBF_TEXT6(ex,name,text) QDIO_DBF_TEXT(ex,name,6,text)
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_TEXT3(ex,name,text) do {} while (0)
-#define QDIO_DBF_TEXT4(ex,name,text) do {} while (0)
-#define QDIO_DBF_TEXT5(ex,name,text) do {} while (0)
-#define QDIO_DBF_TEXT6(ex,name,text) do {} while (0)
-#endif /* CONFIG_QDIO_DEBUG */
-
-#define QDIO_DBF_SETUP_NAME "qdio_setup"
-#define QDIO_DBF_SETUP_LEN 8
-#define QDIO_DBF_SETUP_PAGES 4
-#define QDIO_DBF_SETUP_NR_AREAS 1
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_SETUP_LEVEL 6
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_SETUP_LEVEL 2
-#endif /* CONFIG_QDIO_DEBUG */
-
-#define QDIO_DBF_SBAL_NAME "qdio_labs" /* sbal */
-#define QDIO_DBF_SBAL_LEN 256
-#define QDIO_DBF_SBAL_PAGES 4
-#define QDIO_DBF_SBAL_NR_AREAS 2
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_SBAL_LEVEL 6
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_SBAL_LEVEL 2
-#endif /* CONFIG_QDIO_DEBUG */
-
-#define QDIO_DBF_TRACE_NAME "qdio_trace"
-#define QDIO_DBF_TRACE_LEN 8
-#define QDIO_DBF_TRACE_NR_AREAS 2
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_TRACE_PAGES 16
-#define QDIO_DBF_TRACE_LEVEL 4 /* -------- could be even more verbose here */
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_TRACE_PAGES 4
-#define QDIO_DBF_TRACE_LEVEL 2
-#endif /* CONFIG_QDIO_DEBUG */
-
-#define QDIO_DBF_SENSE_NAME "qdio_sense"
-#define QDIO_DBF_SENSE_LEN 64
-#define QDIO_DBF_SENSE_PAGES 2
-#define QDIO_DBF_SENSE_NR_AREAS 1
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_SENSE_LEVEL 6
-#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_SENSE_LEVEL 2
-#endif /* CONFIG_QDIO_DEBUG */
-
-#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_TRACE_QTYPE QDIO_ZFCP_QFMT
-
-#define QDIO_DBF_SLSB_OUT_NAME "qdio_slsb_out"
-#define QDIO_DBF_SLSB_OUT_LEN QDIO_MAX_BUFFERS_PER_Q
-#define QDIO_DBF_SLSB_OUT_PAGES 256
-#define QDIO_DBF_SLSB_OUT_NR_AREAS 1
-#define QDIO_DBF_SLSB_OUT_LEVEL 6
-
-#define QDIO_DBF_SLSB_IN_NAME "qdio_slsb_in"
-#define QDIO_DBF_SLSB_IN_LEN QDIO_MAX_BUFFERS_PER_Q
-#define QDIO_DBF_SLSB_IN_PAGES 256
-#define QDIO_DBF_SLSB_IN_NR_AREAS 1
-#define QDIO_DBF_SLSB_IN_LEVEL 6
-#endif /* CONFIG_QDIO_DEBUG */
-
-#define QDIO_PRINTK_HEADER QDIO_NAME ": "
-
-#if QDIO_VERBOSE_LEVEL>8
-#define QDIO_PRINT_STUPID(x...) printk( KERN_DEBUG QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_STUPID(x...) do { } while (0)
-#endif
+/* used as intparm in do_IO */
+#define QDIO_DOING_ESTABLISH   1
+#define QDIO_DOING_ACTIVATE    2
+#define QDIO_DOING_CLEANUP     3
+
+#define SLSB_STATE_NOT_INIT    0x0
+#define SLSB_STATE_EMPTY       0x1
+#define SLSB_STATE_PRIMED      0x2
+#define SLSB_STATE_HALTED      0xe
+#define SLSB_STATE_ERROR       0xf
+#define SLSB_TYPE_INPUT                0x0
+#define SLSB_TYPE_OUTPUT       0x20
+#define SLSB_OWNER_PROG                0x80
+#define SLSB_OWNER_CU          0x40
+
+#define SLSB_P_INPUT_NOT_INIT  \
+       (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_NOT_INIT)  /* 0x80 */
+#define SLSB_P_INPUT_ACK       \
+       (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY)     /* 0x81 */
+#define SLSB_CU_INPUT_EMPTY    \
+       (SLSB_OWNER_CU | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY)       /* 0x41 */
+#define SLSB_P_INPUT_PRIMED    \
+       (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_PRIMED)    /* 0x82 */
+#define SLSB_P_INPUT_HALTED    \
+       (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_HALTED)    /* 0x8e */
+#define SLSB_P_INPUT_ERROR     \
+       (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_ERROR)     /* 0x8f */
+#define SLSB_P_OUTPUT_NOT_INIT \
+       (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_NOT_INIT) /* 0xa0 */
+#define SLSB_P_OUTPUT_EMPTY    \
+       (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_EMPTY)    /* 0xa1 */
+#define SLSB_CU_OUTPUT_PRIMED  \
+       (SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED)     /* 0x62 */
+#define SLSB_P_OUTPUT_HALTED   \
+       (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_HALTED)   /* 0xae */
+#define SLSB_P_OUTPUT_ERROR    \
+       (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_ERROR)    /* 0xaf */
+
+#define SLSB_ERROR_DURING_LOOKUP  0xff
+
+/* additional CIWs returned by extended Sense-ID */
+#define CIW_TYPE_EQUEUE                        0x3 /* establish QDIO queues */
+#define CIW_TYPE_AQUEUE                        0x4 /* activate QDIO queues */
 
-#if QDIO_VERBOSE_LEVEL>7
-#define QDIO_PRINT_ALL(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_ALL(x...) do { } while (0)
-#endif
-
-#if QDIO_VERBOSE_LEVEL>6
-#define QDIO_PRINT_INFO(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_INFO(x...) do { } while (0)
-#endif
-
-#if QDIO_VERBOSE_LEVEL>5
-#define QDIO_PRINT_WARN(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_WARN(x...) do { } while (0)
-#endif
-
-#if QDIO_VERBOSE_LEVEL>4
-#define QDIO_PRINT_ERR(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_ERR(x...) do { } while (0)
-#endif
-
-#if QDIO_VERBOSE_LEVEL>3
-#define QDIO_PRINT_CRIT(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_CRIT(x...) do { } while (0)
-#endif
-
-#if QDIO_VERBOSE_LEVEL>2
-#define QDIO_PRINT_ALERT(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_ALERT(x...) do { } while (0)
-#endif
+/* flags for st qdio sch data */
+#define CHSC_FLAG_QDIO_CAPABILITY      0x80
+#define CHSC_FLAG_VALIDITY             0x40
+
+/* qdio adapter-characteristics-1 flag */
+#define AC1_SIGA_INPUT_NEEDED          0x40    /* process input queues */
+#define AC1_SIGA_OUTPUT_NEEDED         0x20    /* process output queues */
+#define AC1_SIGA_SYNC_NEEDED           0x10    /* ask hypervisor to sync */
+#define AC1_AUTOMATIC_SYNC_ON_THININT  0x08    /* set by hypervisor */
+#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI  0x04    /* set by hypervisor */
+#define AC1_SC_QEBSM_AVAILABLE         0x02    /* available for subchannel */
+#define AC1_SC_QEBSM_ENABLED           0x01    /* enabled for subchannel */
 
-#if QDIO_VERBOSE_LEVEL>1
-#define QDIO_PRINT_EMERG(x...) printk( QDIO_PRINTK_HEADER x)
-#else
-#define QDIO_PRINT_EMERG(x...) do { } while (0)
-#endif
-
-#define QDIO_HEXDUMP16(importance,header,ptr) \
-QDIO_PRINT_##importance(header "%02x %02x %02x %02x  " \
-                       "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
-                       "%02x %02x %02x %02x\n",*(((char*)ptr)), \
-                       *(((char*)ptr)+1),*(((char*)ptr)+2), \
-                       *(((char*)ptr)+3),*(((char*)ptr)+4), \
-                       *(((char*)ptr)+5),*(((char*)ptr)+6), \
-                       *(((char*)ptr)+7),*(((char*)ptr)+8), \
-                       *(((char*)ptr)+9),*(((char*)ptr)+10), \
-                       *(((char*)ptr)+11),*(((char*)ptr)+12), \
-                       *(((char*)ptr)+13),*(((char*)ptr)+14), \
-                       *(((char*)ptr)+15)); \
-QDIO_PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
-                       "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
-                       *(((char*)ptr)+16),*(((char*)ptr)+17), \
-                       *(((char*)ptr)+18),*(((char*)ptr)+19), \
-                       *(((char*)ptr)+20),*(((char*)ptr)+21), \
-                       *(((char*)ptr)+22),*(((char*)ptr)+23), \
-                       *(((char*)ptr)+24),*(((char*)ptr)+25), \
-                       *(((char*)ptr)+26),*(((char*)ptr)+27), \
-                       *(((char*)ptr)+28),*(((char*)ptr)+29), \
-                       *(((char*)ptr)+30),*(((char*)ptr)+31));
-
-/****************** END OF DEBUG FACILITY STUFF *********************/
+#ifdef CONFIG_64BIT
+static inline int do_sqbs(u64 token, unsigned char state, int queue,
+                         int *start, int *count)
+{
+       register unsigned long _ccq asm ("0") = *count;
+       register unsigned long _token asm ("1") = token;
+       unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
 
-/*
- * Some instructions as assembly
- */
+       asm volatile(
+               "       .insn   rsy,0xeb000000008A,%1,0,0(%2)"
+               : "+d" (_ccq), "+d" (_queuestart)
+               : "d" ((unsigned long)state), "d" (_token)
+               : "memory", "cc");
+       *count = _ccq & 0xff;
+       *start = _queuestart & 0xff;
 
-static inline int
-do_sqbs(unsigned long sch, unsigned char state, int queue,
-       unsigned int *start, unsigned int *count)
-{
-#ifdef CONFIG_64BIT
-       register unsigned long _ccq asm ("0") = *count;
-       register unsigned long _sch asm ("1") = sch;
-       unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
-
-       asm volatile(
-              "        .insn   rsy,0xeb000000008A,%1,0,0(%2)"
-              : "+d" (_ccq), "+d" (_queuestart)
-              : "d" ((unsigned long)state), "d" (_sch)
-              : "memory", "cc");
-       *count = _ccq & 0xff;
-       *start = _queuestart & 0xff;
-
-       return (_ccq >> 32) & 0xff;
-#else
-       return 0;
-#endif
+       return (_ccq >> 32) & 0xff;
 }
 
-static inline int
-do_eqbs(unsigned long sch, unsigned char *state, int queue,
-       unsigned int *start, unsigned int *count)
+static inline int do_eqbs(u64 token, unsigned char *state, int queue,
+                         int *start, int *count)
 {
-#ifdef CONFIG_64BIT
        register unsigned long _ccq asm ("0") = *count;
-       register unsigned long _sch asm ("1") = sch;
+       register unsigned long _token asm ("1") = token;
        unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
        unsigned long _state = 0;
 
        asm volatile(
                "       .insn   rrf,0xB99c0000,%1,%2,0,0"
                : "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
-               : "d" (_sch)
-               : "memory", "cc" );
+               : "d" (_token)
+               : "memory", "cc");
        *count = _ccq & 0xff;
        *start = _queuestart & 0xff;
        *state = _state & 0xff;
 
        return (_ccq >> 32) & 0xff;
-#else
-       return 0;
-#endif
-}
-
-
-static inline int
-do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2)
-{
-       register unsigned long reg0 asm ("0") = 2;
-       register struct subchannel_id reg1 asm ("1") = schid;
-       register unsigned long reg2 asm ("2") = mask1;
-       register unsigned long reg3 asm ("3") = mask2;
-       int cc;
-
-       asm volatile(
-               "       siga    0\n"
-               "       ipm     %0\n"
-               "       srl     %0,28\n"
-               : "=d" (cc)
-               : "d" (reg0), "d" (reg1), "d" (reg2), "d" (reg3) : "cc");
-       return cc;
-}
-
-static inline int
-do_siga_input(struct subchannel_id schid, unsigned int mask)
-{
-       register unsigned long reg0 asm ("0") = 1;
-       register struct subchannel_id reg1 asm ("1") = schid;
-       register unsigned long reg2 asm ("2") = mask;
-       int cc;
-
-       asm volatile(
-               "       siga    0\n"
-               "       ipm     %0\n"
-               "       srl     %0,28\n"
-               : "=d" (cc)
-               : "d" (reg0), "d" (reg1), "d" (reg2) : "cc", "memory");
-       return cc;
-}
-
-static inline int
-do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb,
-              unsigned int fc)
-{
-       register unsigned long __fc asm("0") = fc;
-       register unsigned long __schid asm("1") = schid;
-       register unsigned long __mask asm("2") = mask;
-       int cc;
-
-       asm volatile(
-               "       siga    0\n"
-               "0:     ipm     %0\n"
-               "       srl     %0,28\n"
-               "1:\n"
-               EX_TABLE(0b,1b)
-               : "=d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask)
-               : "0" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION)
-               : "cc", "memory");
-       (*bb) = ((unsigned int) __fc) >> 31;
-       return cc;
-}
-
-static inline unsigned long
-do_clear_global_summary(void)
-{
-       register unsigned long __fn asm("1") = 3;
-       register unsigned long __tmp asm("2");
-       register unsigned long __time asm("3");
-
-       asm volatile(
-               "       .insn   rre,0xb2650000,2,0"
-               : "+d" (__fn), "=d" (__tmp), "=d" (__time));
-       return __time;
 }
-       
-/*
- * QDIO device commands returned by extended Sense-ID
- */
-#define DEFAULT_ESTABLISH_QS_CMD 0x1b
-#define DEFAULT_ESTABLISH_QS_COUNT 0x1000
-#define DEFAULT_ACTIVATE_QS_CMD 0x1f
-#define DEFAULT_ACTIVATE_QS_COUNT 0
-
-/*
- * additional CIWs returned by extended Sense-ID
- */
-#define CIW_TYPE_EQUEUE 0x3       /* establish QDIO queues */
-#define CIW_TYPE_AQUEUE 0x4       /* activate QDIO queues */
+#else
+static inline int do_sqbs(u64 token, unsigned char state, int queue,
+                         int *start, int *count) { return 0; }
+static inline int do_eqbs(u64 token, unsigned char *state, int queue,
+                         int *start, int *count) { return 0; }
+#endif /* CONFIG_64BIT */
 
-#define QDIO_CHSC_RESPONSE_CODE_OK 1
-/* flags for st qdio sch data */
-#define CHSC_FLAG_QDIO_CAPABILITY 0x80
-#define CHSC_FLAG_VALIDITY 0x40
+struct qdio_irq;
 
-#define CHSC_FLAG_SIGA_INPUT_NECESSARY 0x40
-#define CHSC_FLAG_SIGA_OUTPUT_NECESSARY 0x20
-#define CHSC_FLAG_SIGA_SYNC_NECESSARY 0x10
-#define CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS 0x08
-#define CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS 0x04
+struct siga_flag {
+       u8 input:1;
+       u8 output:1;
+       u8 sync:1;
+       u8 no_sync_ti:1;
+       u8 no_sync_out_ti:1;
+       u8 no_sync_out_pci:1;
+       u8:2;
+} __attribute__ ((packed));
 
-struct qdio_chsc_ssqd {
+struct chsc_ssqd_area {
        struct chsc_header request;
-       u16 reserved1:10;
-       u16 ssid:2;
-       u16 fmt:4;
+       u16:10;
+       u8 ssid:2;
+       u8 fmt:4;
        u16 first_sch;
-       u16 reserved2;
+       u16:16;
        u16 last_sch;
-       u32 reserved3;
+       u32:32;
        struct chsc_header response;
-       u32 reserved4;
-       u8  flags;
-       u8  reserved5;
-       u16 sch;
-       u8  qfmt;
-       u8  parm;
-       u8  qdioac1;
-       u8  sch_class;
-       u8  pct;
-       u8  icnt;
-       u8  reserved7;
-       u8  ocnt;
-       u8  reserved8;
-       u8  mbccnt;
-       u16 qdioac2;
-       u64 sch_token;
-};
+       u32:32;
+       struct qdio_ssqd_desc qdio_ssqd;
+} __attribute__ ((packed));
 
-struct qdio_perf_stats {
-#ifdef CONFIG_64BIT
-       atomic64_t tl_runs;
-       atomic64_t outbound_tl_runs;
-       atomic64_t outbound_tl_runs_resched;
-       atomic64_t inbound_tl_runs;
-       atomic64_t inbound_tl_runs_resched;
-       atomic64_t inbound_thin_tl_runs;
-       atomic64_t inbound_thin_tl_runs_resched;
-
-       atomic64_t siga_outs;
-       atomic64_t siga_ins;
-       atomic64_t siga_syncs;
-       atomic64_t pcis;
-       atomic64_t thinints;
-       atomic64_t fast_reqs;
-
-       atomic64_t outbound_cnt;
-       atomic64_t inbound_cnt;
-#else /* CONFIG_64BIT */
-       atomic_t tl_runs;
-       atomic_t outbound_tl_runs;
-       atomic_t outbound_tl_runs_resched;
-       atomic_t inbound_tl_runs;
-       atomic_t inbound_tl_runs_resched;
-       atomic_t inbound_thin_tl_runs;
-       atomic_t inbound_thin_tl_runs_resched;
-
-       atomic_t siga_outs;
-       atomic_t siga_ins;
-       atomic_t siga_syncs;
-       atomic_t pcis;
-       atomic_t thinints;
-       atomic_t fast_reqs;
-
-       atomic_t outbound_cnt;
-       atomic_t inbound_cnt;
-#endif /* CONFIG_64BIT */
+struct scssc_area {
+       struct chsc_header request;
+       u16 operation_code;
+       u16:16;
+       u32:32;
+       u32:32;
+       u64 summary_indicator_addr;
+       u64 subchannel_indicator_addr;
+       u32 ks:4;
+       u32 kc:4;
+       u32:21;
+       u32 isc:3;
+       u32 word_with_d_bit;
+       u32:32;
+       struct subchannel_id schid;
+       u32 reserved[1004];
+       struct chsc_header response;
+       u32:32;
+} __attribute__ ((packed));
+
+struct qdio_input_q {
+       /* input buffer acknowledgement flag */
+       int polling;
+
+       /* last time of noticing incoming data */
+       u64 timestamp;
+
+       /* lock for clearing the acknowledgement */
+       spinlock_t lock;
 };
 
-/* unlikely as the later the better */
-#define SYNC_MEMORY if (unlikely(q->siga_sync)) qdio_siga_sync_q(q)
-#define SYNC_MEMORY_ALL if (unlikely(q->siga_sync)) \
-       qdio_siga_sync(q,~0U,~0U)
-#define SYNC_MEMORY_ALL_OUTB if (unlikely(q->siga_sync)) \
-       qdio_siga_sync(q,~0U,0)
+struct qdio_output_q {
+       /* failed siga-w attempts*/
+       atomic_t busy_siga_counter;
 
-#define NOW qdio_get_micros()
-#define SAVE_TIMESTAMP(q) q->timing.last_transfer_time=NOW
-#define GET_SAVED_TIMESTAMP(q) (q->timing.last_transfer_time)
-#define SAVE_FRONTIER(q,val) q->last_move_ftc=val
-#define GET_SAVED_FRONTIER(q) (q->last_move_ftc)
+       /* start time of busy condition */
+       u64 timestamp;
 
-#define MY_MODULE_STRING(x) #x
+       /* PCIs are enabled for the queue */
+       int pci_out_enabled;
 
-#ifdef CONFIG_64BIT
-#define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x)
-#else /* CONFIG_64BIT */
-#define QDIO_GET_ADDR(x) ((__u32)(long)x)
-#endif /* CONFIG_64BIT */
+       /* timer to check for more outbound work */
+       struct timer_list timer;
+};
 
 struct qdio_q {
-       volatile struct slsb slsb;
+       struct slsb slsb;
+       union {
+               struct qdio_input_q in;
+               struct qdio_output_q out;
+       } u;
 
-       char unused[QDIO_MAX_BUFFERS_PER_Q];
+       /* queue number */
+       int nr;
 
-       __u32 * dev_st_chg_ind;
+       /* bitmask of queue number */
+       int mask;
 
+       /* input or output queue */
        int is_input_q;
-       struct subchannel_id schid;
-       struct ccw_device *cdev;
-
-       unsigned int is_iqdio_q;
-       unsigned int is_thinint_q;
 
-       /* bit 0 means queue 0, bit 1 means queue 1, ... */
-       unsigned int mask;
-       unsigned int q_no;
+       /* list of thinint input queues */
+       struct list_head entry;
 
+       /* upper-layer program handler */
        qdio_handler_t (*handler);
 
-       /* points to the next buffer to be checked for having
-        * been processed by the card (outbound)
-        * or to the next buffer the program should check for (inbound) */
-       volatile int first_to_check;
-       /* and the last time it was: */
-       volatile int last_move_ftc;
+       /*
+        * inbound: next buffer the program should check for
+        * outbound: next buffer to check for having been processed
+        * by the card
+        */
+       int first_to_check;
 
-       atomic_t number_of_buffers_used;
-       atomic_t polling;
+       /* first_to_check of the last time */
+       int last_move_ftc;
 
-       unsigned int siga_in;
-       unsigned int siga_out;
-       unsigned int siga_sync;
-       unsigned int siga_sync_done_on_thinints;
-       unsigned int siga_sync_done_on_outb_tis;
-       unsigned int hydra_gives_outbound_pcis;
+       /* beginning position for calling the program */
+       int first_to_kick;
 
-       /* used to save beginning position when calling dd_handlers */
-       int first_element_to_kick;
+       /* number of buffers in use by the adapter */
+       atomic_t nr_buf_used;
 
-       atomic_t use_count;
-       atomic_t is_in_shutdown;
-
-       void *irq_ptr;
-
-       struct timer_list timer;
-#ifdef QDIO_USE_TIMERS_FOR_POLLING
-       atomic_t timer_already_set;
-       spinlock_t timer_lock;
-#else /* QDIO_USE_TIMERS_FOR_POLLING */
+       struct qdio_irq *irq_ptr;
        struct tasklet_struct tasklet;
-#endif /* QDIO_USE_TIMERS_FOR_POLLING */
 
-
-       enum qdio_irq_states state;
-
-       /* used to store the error condition during a data transfer */
+       /* error condition during a data transfer */
        unsigned int qdio_error;
-       unsigned int siga_error;
-       unsigned int error_status_flags;
-
-       /* list of interesting queues */
-       volatile struct qdio_q *list_next;
-       volatile struct qdio_q *list_prev;
 
        struct sl *sl;
-       volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q];
-
-       struct qdio_buffer *qdio_buffers[QDIO_MAX_BUFFERS_PER_Q];
-
-       unsigned long int_parm;
-
-       /*struct {
-               int in_bh_check_limit;
-               int threshold;
-       } threshold_classes[QDIO_STATS_CLASSES];*/
-
-       struct {
-               /* inbound: the time to stop polling
-                  outbound: the time to kick peer */
-               int threshold; /* the real value */
-
-               /* outbound: last time of do_QDIO
-                  inbound: last time of noticing incoming data */
-               /*__u64 last_transfer_times[QDIO_STATS_NUMBER];
-               int last_transfer_index; */
-
-               __u64 last_transfer_time;
-               __u64 busy_start;
-       } timing;
-       atomic_t busy_siga_counter;
-        unsigned int queue_type;
-       unsigned int is_pci_out;
-
-       /* leave this member at the end. won't be cleared in qdio_fill_qs */
-       struct slib *slib; /* a page is allocated under this pointer,
-                             sl points into this page, offset PAGE_SIZE/2
-                             (after slib) */
+       struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
+
+       /*
+        * Warning: Leave this member at the end so it won't be cleared in
+        * qdio_fill_qs. A page is allocated under this pointer and used for
+        * slib and sl. slib is 2048 bytes big and sl points to offset
+        * PAGE_SIZE / 2.
+        */
+       struct slib *slib;
 } __attribute__ ((aligned(256)));
 
 struct qdio_irq {
-       __u32 * volatile dev_st_chg_ind;
+       struct qib qib;
+       u32 *dsci;              /* address of device state change indicator */
+       struct ccw_device *cdev;
 
        unsigned long int_parm;
        struct subchannel_id schid;
-
-       unsigned int is_iqdio_irq;
-       unsigned int is_thinint_irq;
-       unsigned int hydra_gives_outbound_pcis;
-       unsigned int sync_done_on_outb_pcis;
-
-       /* QEBSM facility */
-       unsigned int is_qebsm;
-       unsigned long sch_token;
+       unsigned long sch_token;        /* QEBSM facility */
 
        enum qdio_irq_states state;
 
-       unsigned int no_input_qs;
-       unsigned int no_output_qs;
+       struct siga_flag siga_flag;     /* siga sync information from qdioac */
 
-       unsigned char qdioac;
+       int nr_input_qs;
+       int nr_output_qs;
 
        struct ccw1 ccw;
-
        struct ciw equeue;
        struct ciw aqueue;
 
-       struct qib qib;
-       
-       void (*original_int_handler) (struct ccw_device *,
-                                     unsigned long, struct irb *);
+       struct qdio_ssqd_desc ssqd_desc;
+
+       void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *);
 
-       /* leave these four members together at the end. won't be cleared in qdio_fill_irq */
+       /*
+        * Warning: Leave these members together at the end so they won't be
+        * cleared in qdio_setup_irq.
+        */
        struct qdr *qdr;
+       unsigned long chsc_page;
+
        struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
        struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
-       struct semaphore setting_up_sema;
+
+       struct mutex setup_mutex;
 };
-#endif
+
+/* helper functions */
+#define queue_type(q)  q->irq_ptr->qib.qfmt
+
+#define is_thinint_irq(irq) \
+       (irq->qib.qfmt == QDIO_IQDIO_QFMT || \
+        css_general_characteristics.aif_osa)
+
+/* the highest iqdio queue is used for multicast */
+static inline int multicast_outbound(struct qdio_q *q)
+{
+       return (q->irq_ptr->nr_output_qs > 1) &&
+              (q->nr == q->irq_ptr->nr_output_qs - 1);
+}
+
+static inline unsigned long long get_usecs(void)
+{
+       return monotonic_clock() >> 12;
+}
+
+#define pci_out_supported(q) \
+       (q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
+#define is_qebsm(q)                    (q->irq_ptr->sch_token != 0)
+
+#define need_siga_sync_thinint(q)      (!q->irq_ptr->siga_flag.no_sync_ti)
+#define need_siga_sync_out_thinint(q)  (!q->irq_ptr->siga_flag.no_sync_out_ti)
+#define need_siga_in(q)                        (q->irq_ptr->siga_flag.input)
+#define need_siga_out(q)               (q->irq_ptr->siga_flag.output)
+#define need_siga_sync(q)              (q->irq_ptr->siga_flag.sync)
+#define siga_syncs_out_pci(q)          (q->irq_ptr->siga_flag.no_sync_out_pci)
+
+#define for_each_input_queue(irq_ptr, q, i)    \
+       for (i = 0, q = irq_ptr->input_qs[0];   \
+               i < irq_ptr->nr_input_qs;       \
+               q = irq_ptr->input_qs[++i])
+#define for_each_output_queue(irq_ptr, q, i)   \
+       for (i = 0, q = irq_ptr->output_qs[0];  \
+               i < irq_ptr->nr_output_qs;      \
+               q = irq_ptr->output_qs[++i])
+
+#define prev_buf(bufnr)        \
+       ((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)
+#define next_buf(bufnr)        \
+       ((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)
+#define add_buf(bufnr, inc) \
+       ((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)
+
+/* prototypes for thin interrupt */
+void qdio_sync_after_thinint(struct qdio_q *q);
+int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state);
+void qdio_check_outbound_after_thinint(struct qdio_q *q);
+int qdio_inbound_q_moved(struct qdio_q *q);
+void qdio_kick_inbound_handler(struct qdio_q *q);
+void qdio_stop_polling(struct qdio_q *q);
+int qdio_siga_sync_q(struct qdio_q *q);
+
+void qdio_setup_thinint(struct qdio_irq *irq_ptr);
+int qdio_establish_thinint(struct qdio_irq *irq_ptr);
+void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
+void tiqdio_add_input_queues(struct qdio_irq *irq_ptr);
+void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr);
+void tiqdio_inbound_processing(unsigned long q);
+int tiqdio_allocate_memory(void);
+void tiqdio_free_memory(void);
+int tiqdio_register_thinints(void);
+void tiqdio_unregister_thinints(void);
+
+/* prototypes for setup */
+void qdio_inbound_processing(unsigned long data);
+void qdio_outbound_processing(unsigned long data);
+void qdio_outbound_timer(unsigned long data);
+void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
+                     struct irb *irb);
+int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs,
+                    int nr_output_qs);
+void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr);
+int qdio_setup_irq(struct qdio_initialize *init_data);
+void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
+                               struct ccw_device *cdev);
+void qdio_release_memory(struct qdio_irq *irq_ptr);
+int qdio_setup_init(void);
+void qdio_setup_exit(void);
+
+#endif /* _CIO_QDIO_H */
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
new file mode 100644 (file)
index 0000000..337aa30
--- /dev/null
@@ -0,0 +1,240 @@
+/*
+ *  drivers/s390/cio/qdio_debug.c
+ *
+ *  Copyright IBM Corp. 2008
+ *
+ *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
+ */
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+#include <asm/qdio.h>
+#include <asm/debug.h>
+#include "qdio_debug.h"
+#include "qdio.h"
+
+debug_info_t *qdio_dbf_setup;
+debug_info_t *qdio_dbf_trace;
+
+static struct dentry *debugfs_root;
+#define MAX_DEBUGFS_QUEUES     32
+static struct dentry *debugfs_queues[MAX_DEBUGFS_QUEUES] = { NULL };
+static DEFINE_MUTEX(debugfs_mutex);
+
+void qdio_allocate_do_dbf(struct qdio_initialize *init_data)
+{
+       char dbf_text[20];
+
+       sprintf(dbf_text, "qfmt:%x", init_data->q_format);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_HEX0(0, setup, init_data->adapter_name, 8);
+       sprintf(dbf_text, "qpff%4x", init_data->qib_param_field_format);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_HEX0(0, setup, &init_data->qib_param_field, sizeof(void *));
+       QDIO_DBF_HEX0(0, setup, &init_data->input_slib_elements, sizeof(void *));
+       QDIO_DBF_HEX0(0, setup, &init_data->output_slib_elements, sizeof(void *));
+       sprintf(dbf_text, "niq:%4x", init_data->no_input_qs);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       sprintf(dbf_text, "noq:%4x", init_data->no_output_qs);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_HEX0(0, setup, &init_data->input_handler, sizeof(void *));
+       QDIO_DBF_HEX0(0, setup, &init_data->output_handler, sizeof(void *));
+       QDIO_DBF_HEX0(0, setup, &init_data->int_parm, sizeof(long));
+       QDIO_DBF_HEX0(0, setup, &init_data->flags, sizeof(long));
+       QDIO_DBF_HEX0(0, setup, &init_data->input_sbal_addr_array, sizeof(void *));
+       QDIO_DBF_HEX0(0, setup, &init_data->output_sbal_addr_array, sizeof(void *));
+}
+
+static void qdio_unregister_dbf_views(void)
+{
+       if (qdio_dbf_setup)
+               debug_unregister(qdio_dbf_setup);
+       if (qdio_dbf_trace)
+               debug_unregister(qdio_dbf_trace);
+}
+
+static int qdio_register_dbf_views(void)
+{
+       qdio_dbf_setup = debug_register("qdio_setup", QDIO_DBF_SETUP_PAGES,
+                                       QDIO_DBF_SETUP_NR_AREAS,
+                                       QDIO_DBF_SETUP_LEN);
+       if (!qdio_dbf_setup)
+               goto oom;
+       debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view);
+       debug_set_level(qdio_dbf_setup, QDIO_DBF_SETUP_LEVEL);
+
+       qdio_dbf_trace = debug_register("qdio_trace", QDIO_DBF_TRACE_PAGES,
+                                       QDIO_DBF_TRACE_NR_AREAS,
+                                       QDIO_DBF_TRACE_LEN);
+       if (!qdio_dbf_trace)
+               goto oom;
+       debug_register_view(qdio_dbf_trace, &debug_hex_ascii_view);
+       debug_set_level(qdio_dbf_trace, QDIO_DBF_TRACE_LEVEL);
+       return 0;
+oom:
+       qdio_unregister_dbf_views();
+       return -ENOMEM;
+}
+
+static int qstat_show(struct seq_file *m, void *v)
+{
+       unsigned char state;
+       struct qdio_q *q = m->private;
+       int i;
+
+       if (!q)
+               return 0;
+
+       seq_printf(m, "device state indicator: %d\n", *q->irq_ptr->dsci);
+       seq_printf(m, "nr_used: %d\n", atomic_read(&q->nr_buf_used));
+       seq_printf(m, "ftc: %d\n", q->first_to_check);
+       seq_printf(m, "last_move_ftc: %d\n", q->last_move_ftc);
+       seq_printf(m, "polling: %d\n", q->u.in.polling);
+       seq_printf(m, "slsb buffer states:\n");
+
+       qdio_siga_sync_q(q);
+       for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
+               get_buf_state(q, i, &state);
+               switch (state) {
+               case SLSB_P_INPUT_NOT_INIT:
+               case SLSB_P_OUTPUT_NOT_INIT:
+                       seq_printf(m, "N");
+                       break;
+               case SLSB_P_INPUT_PRIMED:
+               case SLSB_CU_OUTPUT_PRIMED:
+                       seq_printf(m, "+");
+                       break;
+               case SLSB_P_INPUT_ACK:
+                       seq_printf(m, "A");
+                       break;
+               case SLSB_P_INPUT_ERROR:
+               case SLSB_P_OUTPUT_ERROR:
+                       seq_printf(m, "x");
+                       break;
+               case SLSB_CU_INPUT_EMPTY:
+               case SLSB_P_OUTPUT_EMPTY:
+                       seq_printf(m, "-");
+                       break;
+               case SLSB_P_INPUT_HALTED:
+               case SLSB_P_OUTPUT_HALTED:
+                       seq_printf(m, ".");
+                       break;
+               default:
+                       seq_printf(m, "?");
+               }
+               if (i == 63)
+                       seq_printf(m, "\n");
+       }
+       seq_printf(m, "\n");
+       return 0;
+}
+
+static ssize_t qstat_seq_write(struct file *file, const char __user *buf,
+                              size_t count, loff_t *off)
+{
+       struct seq_file *seq = file->private_data;
+       struct qdio_q *q = seq->private;
+
+       if (!q)
+               return 0;
+
+       if (q->is_input_q)
+               xchg(q->irq_ptr->dsci, 1);
+       local_bh_disable();
+       tasklet_schedule(&q->tasklet);
+       local_bh_enable();
+       return count;
+}
+
+static int qstat_seq_open(struct inode *inode, struct file *filp)
+{
+       return single_open(filp, qstat_show,
+                          filp->f_path.dentry->d_inode->i_private);
+}
+
+static void get_queue_name(struct qdio_q *q, struct ccw_device *cdev, char *name)
+{
+       memset(name, 0, sizeof(name));
+       sprintf(name, "%s", cdev->dev.bus_id);
+       if (q->is_input_q)
+               sprintf(name + strlen(name), "_input");
+       else
+               sprintf(name + strlen(name), "_output");
+       sprintf(name + strlen(name), "_%d", q->nr);
+}
+
+static void remove_debugfs_entry(struct qdio_q *q)
+{
+       int i;
+
+       for (i = 0; i < MAX_DEBUGFS_QUEUES; i++) {
+               if (!debugfs_queues[i])
+                       continue;
+               if (debugfs_queues[i]->d_inode->i_private == q) {
+                       debugfs_remove(debugfs_queues[i]);
+                       debugfs_queues[i] = NULL;
+               }
+       }
+}
+
+static struct file_operations debugfs_fops = {
+       .owner   = THIS_MODULE,
+       .open    = qstat_seq_open,
+       .read    = seq_read,
+       .write   = qstat_seq_write,
+       .llseek  = seq_lseek,
+       .release = single_release,
+};
+
+static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev)
+{
+       int i = 0;
+       char name[40];
+
+       while (debugfs_queues[i] != NULL) {
+               i++;
+               if (i >= MAX_DEBUGFS_QUEUES)
+                       return;
+       }
+       get_queue_name(q, cdev, name);
+       debugfs_queues[i] = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
+                                               debugfs_root, q, &debugfs_fops);
+}
+
+void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
+{
+       struct qdio_q *q;
+       int i;
+
+       mutex_lock(&debugfs_mutex);
+       for_each_input_queue(irq_ptr, q, i)
+               setup_debugfs_entry(q, cdev);
+       for_each_output_queue(irq_ptr, q, i)
+               setup_debugfs_entry(q, cdev);
+       mutex_unlock(&debugfs_mutex);
+}
+
+void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
+{
+       struct qdio_q *q;
+       int i;
+
+       mutex_lock(&debugfs_mutex);
+       for_each_input_queue(irq_ptr, q, i)
+               remove_debugfs_entry(q);
+       for_each_output_queue(irq_ptr, q, i)
+               remove_debugfs_entry(q);
+       mutex_unlock(&debugfs_mutex);
+}
+
+int __init qdio_debug_init(void)
+{
+       debugfs_root = debugfs_create_dir("qdio_queues", NULL);
+       return qdio_register_dbf_views();
+}
+
+void qdio_debug_exit(void)
+{
+       debugfs_remove(debugfs_root);
+       qdio_unregister_dbf_views();
+}
diff --git a/drivers/s390/cio/qdio_debug.h b/drivers/s390/cio/qdio_debug.h
new file mode 100644 (file)
index 0000000..8484b83
--- /dev/null
@@ -0,0 +1,91 @@
+/*
+ *  drivers/s390/cio/qdio_debug.h
+ *
+ *  Copyright IBM Corp. 2008
+ *
+ *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
+ */
+#ifndef QDIO_DEBUG_H
+#define QDIO_DEBUG_H
+
+#include <asm/debug.h>
+#include <asm/qdio.h>
+#include "qdio.h"
+
+#define QDIO_DBF_HEX(ex, name, level, addr, len) \
+       do { \
+       if (ex) \
+               debug_exception(qdio_dbf_##name, level, (void *)(addr), len); \
+       else \
+               debug_event(qdio_dbf_##name, level, (void *)(addr), len); \
+       } while (0)
+#define QDIO_DBF_TEXT(ex, name, level, text) \
+       do { \
+       if (ex) \
+               debug_text_exception(qdio_dbf_##name, level, text); \
+       else \
+               debug_text_event(qdio_dbf_##name, level, text); \
+       } while (0)
+
+#define QDIO_DBF_HEX0(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 0, addr, len)
+#define QDIO_DBF_HEX1(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 1, addr, len)
+#define QDIO_DBF_HEX2(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 2, addr, len)
+
+#ifdef CONFIG_QDIO_DEBUG
+#define QDIO_DBF_HEX3(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 3, addr, len)
+#define QDIO_DBF_HEX4(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 4, addr, len)
+#define QDIO_DBF_HEX5(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 5, addr, len)
+#define QDIO_DBF_HEX6(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 6, addr, len)
+#else
+#define QDIO_DBF_HEX3(ex, name, addr, len) do {} while (0)
+#define QDIO_DBF_HEX4(ex, name, addr, len) do {} while (0)
+#define QDIO_DBF_HEX5(ex, name, addr, len) do {} while (0)
+#define QDIO_DBF_HEX6(ex, name, addr, len) do {} while (0)
+#endif /* CONFIG_QDIO_DEBUG */
+
+#define QDIO_DBF_TEXT0(ex, name, text) QDIO_DBF_TEXT(ex, name, 0, text)
+#define QDIO_DBF_TEXT1(ex, name, text) QDIO_DBF_TEXT(ex, name, 1, text)
+#define QDIO_DBF_TEXT2(ex, name, text) QDIO_DBF_TEXT(ex, name, 2, text)
+
+#ifdef CONFIG_QDIO_DEBUG
+#define QDIO_DBF_TEXT3(ex, name, text) QDIO_DBF_TEXT(ex, name, 3, text)
+#define QDIO_DBF_TEXT4(ex, name, text) QDIO_DBF_TEXT(ex, name, 4, text)
+#define QDIO_DBF_TEXT5(ex, name, text) QDIO_DBF_TEXT(ex, name, 5, text)
+#define QDIO_DBF_TEXT6(ex, name, text) QDIO_DBF_TEXT(ex, name, 6, text)
+#else
+#define QDIO_DBF_TEXT3(ex, name, text) do {} while (0)
+#define QDIO_DBF_TEXT4(ex, name, text) do {} while (0)
+#define QDIO_DBF_TEXT5(ex, name, text) do {} while (0)
+#define QDIO_DBF_TEXT6(ex, name, text) do {} while (0)
+#endif /* CONFIG_QDIO_DEBUG */
+
+/* s390dbf views */
+#define QDIO_DBF_SETUP_LEN             8
+#define QDIO_DBF_SETUP_PAGES           4
+#define QDIO_DBF_SETUP_NR_AREAS                1
+
+#define QDIO_DBF_TRACE_LEN             8
+#define QDIO_DBF_TRACE_NR_AREAS                2
+
+#ifdef CONFIG_QDIO_DEBUG
+#define QDIO_DBF_TRACE_PAGES           16
+#define QDIO_DBF_SETUP_LEVEL           6
+#define QDIO_DBF_TRACE_LEVEL           4
+#else /* !CONFIG_QDIO_DEBUG */
+#define QDIO_DBF_TRACE_PAGES           4
+#define QDIO_DBF_SETUP_LEVEL           2
+#define QDIO_DBF_TRACE_LEVEL           2
+#endif /* CONFIG_QDIO_DEBUG */
+
+extern debug_info_t *qdio_dbf_setup;
+extern debug_info_t *qdio_dbf_trace;
+
+void qdio_allocate_do_dbf(struct qdio_initialize *init_data);
+void debug_print_bstat(struct qdio_q *q);
+void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
+                             struct ccw_device *cdev);
+void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr,
+                                struct ccw_device *cdev);
+int qdio_debug_init(void);
+void qdio_debug_exit(void);
+#endif
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
new file mode 100644 (file)
index 0000000..d10c73c
--- /dev/null
@@ -0,0 +1,1755 @@
+/*
+ * linux/drivers/s390/cio/qdio_main.c
+ *
+ * Linux for s390 qdio support, buffer handling, qdio API and module support.
+ *
+ * Copyright 2000,2008 IBM Corp.
+ * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
+ *           Jan Glauber <jang@linux.vnet.ibm.com>
+ * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <asm/atomic.h>
+#include <asm/debug.h>
+#include <asm/qdio.h>
+
+#include "cio.h"
+#include "css.h"
+#include "device.h"
+#include "qdio.h"
+#include "qdio_debug.h"
+#include "qdio_perf.h"
+
+MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>,"\
+       "Jan Glauber <jang@linux.vnet.ibm.com>");
+MODULE_DESCRIPTION("QDIO base support");
+MODULE_LICENSE("GPL");
+
+static inline int do_siga_sync(struct subchannel_id schid,
+                              unsigned int out_mask, unsigned int in_mask)
+{
+       register unsigned long __fc asm ("0") = 2;
+       register struct subchannel_id __schid asm ("1") = schid;
+       register unsigned long out asm ("2") = out_mask;
+       register unsigned long in asm ("3") = in_mask;
+       int cc;
+
+       asm volatile(
+               "       siga    0\n"
+               "       ipm     %0\n"
+               "       srl     %0,28\n"
+               : "=d" (cc)
+               : "d" (__fc), "d" (__schid), "d" (out), "d" (in) : "cc");
+       return cc;
+}
+
+static inline int do_siga_input(struct subchannel_id schid, unsigned int mask)
+{
+       register unsigned long __fc asm ("0") = 1;
+       register struct subchannel_id __schid asm ("1") = schid;
+       register unsigned long __mask asm ("2") = mask;
+       int cc;
+
+       asm volatile(
+               "       siga    0\n"
+               "       ipm     %0\n"
+               "       srl     %0,28\n"
+               : "=d" (cc)
+               : "d" (__fc), "d" (__schid), "d" (__mask) : "cc", "memory");
+       return cc;
+}
+
+/**
+ * do_siga_output - perform SIGA-w/wt function
+ * @schid: subchannel id or in case of QEBSM the subchannel token
+ * @mask: which output queues to process
+ * @bb: busy bit indicator, set only if SIGA-w/wt could not access a buffer
+ * @fc: function code to perform
+ *
+ * Returns cc or QDIO_ERROR_SIGA_ACCESS_EXCEPTION.
+ * Note: For IQDC unicast queues only the highest priority queue is processed.
+ */
+static inline int do_siga_output(unsigned long schid, unsigned long mask,
+                                u32 *bb, unsigned int fc)
+{
+       register unsigned long __fc asm("0") = fc;
+       register unsigned long __schid asm("1") = schid;
+       register unsigned long __mask asm("2") = mask;
+       int cc = QDIO_ERROR_SIGA_ACCESS_EXCEPTION;
+
+       asm volatile(
+               "       siga    0\n"
+               "0:     ipm     %0\n"
+               "       srl     %0,28\n"
+               "1:\n"
+               EX_TABLE(0b, 1b)
+               : "+d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask)
+               : : "cc", "memory");
+       *bb = ((unsigned int) __fc) >> 31;
+       return cc;
+}
+
+static inline int qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
+{
+       char dbf_text[15];
+
+       /* all done or next buffer state different */
+       if (ccq == 0 || ccq == 32)
+               return 0;
+       /* not all buffers processed */
+       if (ccq == 96 || ccq == 97)
+               return 1;
+       /* notify devices immediately */
+       sprintf(dbf_text, "%d", ccq);
+       QDIO_DBF_TEXT2(1, trace, dbf_text);
+       return -EIO;
+}
+
+/**
+ * qdio_do_eqbs - extract buffer states for QEBSM
+ * @q: queue to manipulate
+ * @state: state of the extracted buffers
+ * @start: buffer number to start at
+ * @count: count of buffers to examine
+ *
+ * Returns the number of successfull extracted equal buffer states.
+ * Stops processing if a state is different from the last buffers state.
+ */
+static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
+                       int start, int count)
+{
+       unsigned int ccq = 0;
+       int tmp_count = count, tmp_start = start;
+       int nr = q->nr;
+       int rc;
+       char dbf_text[15];
+
+       BUG_ON(!q->irq_ptr->sch_token);
+
+       if (!q->is_input_q)
+               nr += q->irq_ptr->nr_input_qs;
+again:
+       ccq = do_eqbs(q->irq_ptr->sch_token, state, nr, &tmp_start, &tmp_count);
+       rc = qdio_check_ccq(q, ccq);
+
+       /* At least one buffer was processed, return and extract the remaining
+        * buffers later.
+        */
+       if ((ccq == 96) && (count != tmp_count))
+               return (count - tmp_count);
+       if (rc == 1) {
+               QDIO_DBF_TEXT5(1, trace, "eqAGAIN");
+               goto again;
+       }
+
+       if (rc < 0) {
+               QDIO_DBF_TEXT2(1, trace, "eqberr");
+               sprintf(dbf_text, "%2x,%2x,%d,%d", count, tmp_count, ccq, nr);
+               QDIO_DBF_TEXT2(1, trace, dbf_text);
+               q->handler(q->irq_ptr->cdev,
+                          QDIO_ERROR_ACTIVATE_CHECK_CONDITION,
+                          0, -1, -1, q->irq_ptr->int_parm);
+               return 0;
+       }
+       return count - tmp_count;
+}
+
+/**
+ * qdio_do_sqbs - set buffer states for QEBSM
+ * @q: queue to manipulate
+ * @state: new state of the buffers
+ * @start: first buffer number to change
+ * @count: how many buffers to change
+ *
+ * Returns the number of successfully changed buffers.
+ * Does retrying until the specified count of buffer states is set or an
+ * error occurs.
+ */
+static int qdio_do_sqbs(struct qdio_q *q, unsigned char state, int start,
+                       int count)
+{
+       unsigned int ccq = 0;
+       int tmp_count = count, tmp_start = start;
+       int nr = q->nr;
+       int rc;
+       char dbf_text[15];
+
+       BUG_ON(!q->irq_ptr->sch_token);
+
+       if (!q->is_input_q)
+               nr += q->irq_ptr->nr_input_qs;
+again:
+       ccq = do_sqbs(q->irq_ptr->sch_token, state, nr, &tmp_start, &tmp_count);
+       rc = qdio_check_ccq(q, ccq);
+       if (rc == 1) {
+               QDIO_DBF_TEXT5(1, trace, "sqAGAIN");
+               goto again;
+       }
+       if (rc < 0) {
+               QDIO_DBF_TEXT3(1, trace, "sqberr");
+               sprintf(dbf_text, "%2x,%2x", count, tmp_count);
+               QDIO_DBF_TEXT3(1, trace, dbf_text);
+               sprintf(dbf_text, "%d,%d", ccq, nr);
+               QDIO_DBF_TEXT3(1, trace, dbf_text);
+
+               q->handler(q->irq_ptr->cdev,
+                          QDIO_ERROR_ACTIVATE_CHECK_CONDITION,
+                          0, -1, -1, q->irq_ptr->int_parm);
+               return 0;
+       }
+       WARN_ON(tmp_count);
+       return count - tmp_count;
+}
+
+/* returns number of examined buffers and their common state in *state */
+static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
+                                unsigned char *state, unsigned int count)
+{
+       unsigned char __state = 0;
+       int i;
+
+       BUG_ON(bufnr > QDIO_MAX_BUFFERS_MASK);
+       BUG_ON(count > QDIO_MAX_BUFFERS_PER_Q);
+
+       if (is_qebsm(q))
+               return qdio_do_eqbs(q, state, bufnr, count);
+
+       for (i = 0; i < count; i++) {
+               if (!__state)
+                       __state = q->slsb.val[bufnr];
+               else if (q->slsb.val[bufnr] != __state)
+                       break;
+               bufnr = next_buf(bufnr);
+       }
+       *state = __state;
+       return i;
+}
+
+inline int get_buf_state(struct qdio_q *q, unsigned int bufnr,
+                 unsigned char *state)
+{
+       return get_buf_states(q, bufnr, state, 1);
+}
+
+/* wrap-around safe setting of slsb states, returns number of changed buffers */
+static inline int set_buf_states(struct qdio_q *q, int bufnr,
+                                unsigned char state, int count)
+{
+       int i;
+
+       BUG_ON(bufnr > QDIO_MAX_BUFFERS_MASK);
+       BUG_ON(count > QDIO_MAX_BUFFERS_PER_Q);
+
+       if (is_qebsm(q))
+               return qdio_do_sqbs(q, state, bufnr, count);
+
+       for (i = 0; i < count; i++) {
+               xchg(&q->slsb.val[bufnr], state);
+               bufnr = next_buf(bufnr);
+       }
+       return count;
+}
+
+static inline int set_buf_state(struct qdio_q *q, int bufnr,
+                               unsigned char state)
+{
+       return set_buf_states(q, bufnr, state, 1);
+}
+
+/* set slsb states to initial state */
+void qdio_init_buf_states(struct qdio_irq *irq_ptr)
+{
+       struct qdio_q *q;
+       int i;
+
+       for_each_input_queue(irq_ptr, q, i)
+               set_buf_states(q, 0, SLSB_P_INPUT_NOT_INIT,
+                              QDIO_MAX_BUFFERS_PER_Q);
+       for_each_output_queue(irq_ptr, q, i)
+               set_buf_states(q, 0, SLSB_P_OUTPUT_NOT_INIT,
+                              QDIO_MAX_BUFFERS_PER_Q);
+}
+
+static int qdio_siga_sync(struct qdio_q *q, unsigned int output,
+                         unsigned int input)
+{
+       int cc;
+
+       if (!need_siga_sync(q))
+               return 0;
+
+       qdio_perf_stat_inc(&perf_stats.siga_sync);
+
+       cc = do_siga_sync(q->irq_ptr->schid, output, input);
+       if (cc) {
+               QDIO_DBF_TEXT4(0, trace, "sigasync");
+               QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+               QDIO_DBF_HEX3(0, trace, &cc, sizeof(int *));
+       }
+       return cc;
+}
+
+inline int qdio_siga_sync_q(struct qdio_q *q)
+{
+       if (q->is_input_q)
+               return qdio_siga_sync(q, 0, q->mask);
+       else
+               return qdio_siga_sync(q, q->mask, 0);
+}
+
+static inline int qdio_siga_sync_out(struct qdio_q *q)
+{
+       return qdio_siga_sync(q, ~0U, 0);
+}
+
+static inline int qdio_siga_sync_all(struct qdio_q *q)
+{
+       return qdio_siga_sync(q, ~0U, ~0U);
+}
+
+static inline int qdio_do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
+{
+       unsigned int fc = 0;
+       unsigned long schid;
+
+       if (!is_qebsm(q))
+               schid = *((u32 *)&q->irq_ptr->schid);
+       else {
+               schid = q->irq_ptr->sch_token;
+               fc |= 0x80;
+       }
+       return do_siga_output(schid, q->mask, busy_bit, fc);
+}
+
+static int qdio_siga_output(struct qdio_q *q)
+{
+       int cc;
+       u32 busy_bit;
+       u64 start_time = 0;
+
+       QDIO_DBF_TEXT5(0, trace, "sigaout");
+       QDIO_DBF_HEX5(0, trace, &q, sizeof(void *));
+
+       qdio_perf_stat_inc(&perf_stats.siga_out);
+again:
+       cc = qdio_do_siga_output(q, &busy_bit);
+       if (queue_type(q) == QDIO_IQDIO_QFMT && cc == 2 && busy_bit) {
+               if (!start_time)
+                       start_time = get_usecs();
+               else if ((get_usecs() - start_time) < QDIO_BUSY_BIT_PATIENCE)
+                       goto again;
+       }
+
+       if (cc == 2 && busy_bit)
+               cc |= QDIO_ERROR_SIGA_BUSY;
+       if (cc)
+               QDIO_DBF_HEX3(0, trace, &cc, sizeof(int *));
+       return cc;
+}
+
+static inline int qdio_siga_input(struct qdio_q *q)
+{
+       int cc;
+
+       QDIO_DBF_TEXT4(0, trace, "sigain");
+       QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+
+       qdio_perf_stat_inc(&perf_stats.siga_in);
+
+       cc = do_siga_input(q->irq_ptr->schid, q->mask);
+       if (cc)
+               QDIO_DBF_HEX3(0, trace, &cc, sizeof(int *));
+       return cc;
+}
+
+/* called from thinint inbound handler */
+void qdio_sync_after_thinint(struct qdio_q *q)
+{
+       if (pci_out_supported(q)) {
+               if (need_siga_sync_thinint(q))
+                       qdio_siga_sync_all(q);
+               else if (need_siga_sync_out_thinint(q))
+                       qdio_siga_sync_out(q);
+       } else
+               qdio_siga_sync_q(q);
+}
+
+inline void qdio_stop_polling(struct qdio_q *q)
+{
+       spin_lock_bh(&q->u.in.lock);
+       if (!q->u.in.polling) {
+               spin_unlock_bh(&q->u.in.lock);
+               return;
+       }
+       q->u.in.polling = 0;
+       qdio_perf_stat_inc(&perf_stats.debug_stop_polling);
+
+       /* show the card that we are not polling anymore */
+       set_buf_state(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT);
+       spin_unlock_bh(&q->u.in.lock);
+}
+
+static void announce_buffer_error(struct qdio_q *q)
+{
+       char dbf_text[15];
+
+       if (q->is_input_q)
+               QDIO_DBF_TEXT3(1, trace, "inperr");
+       else
+               QDIO_DBF_TEXT3(0, trace, "outperr");
+
+       sprintf(dbf_text, "%x-%x-%x", q->first_to_check,
+               q->sbal[q->first_to_check]->element[14].flags,
+               q->sbal[q->first_to_check]->element[15].flags);
+       QDIO_DBF_TEXT3(1, trace, dbf_text);
+       QDIO_DBF_HEX2(1, trace, q->sbal[q->first_to_check], 256);
+
+       q->qdio_error = QDIO_ERROR_SLSB_STATE;
+}
+
+static int get_inbound_buffer_frontier(struct qdio_q *q)
+{
+       int count, stop;
+       unsigned char state;
+
+       /*
+        * If we still poll don't update last_move_ftc, keep the
+        * previously ACK buffer there.
+        */
+       if (!q->u.in.polling)
+               q->last_move_ftc = q->first_to_check;
+
+       /*
+        * Don't check 128 buffers, as otherwise qdio_inbound_q_moved
+        * would return 0.
+        */
+       count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK);
+       stop = add_buf(q->first_to_check, count);
+
+       /*
+        * No siga sync here, as a PCI or we after a thin interrupt
+        * will sync the queues.
+        */
+
+       /* need to set count to 1 for non-qebsm */
+       if (!is_qebsm(q))
+               count = 1;
+
+check_next:
+       if (q->first_to_check == stop)
+               goto out;
+
+       count = get_buf_states(q, q->first_to_check, &state, count);
+       if (!count)
+               goto out;
+
+       switch (state) {
+       case SLSB_P_INPUT_PRIMED:
+               QDIO_DBF_TEXT5(0, trace, "inptprim");
+
+               /*
+                * Only ACK the first buffer. The ACK will be removed in
+                * qdio_stop_polling.
+                */
+               if (q->u.in.polling)
+                       state = SLSB_P_INPUT_NOT_INIT;
+               else {
+                       q->u.in.polling = 1;
+                       state = SLSB_P_INPUT_ACK;
+               }
+               set_buf_state(q, q->first_to_check, state);
+
+               /*
+                * Need to change all PRIMED buffers to NOT_INIT, otherwise
+                * we're loosing initiative in the thinint code.
+                */
+               if (count > 1)
+                       set_buf_states(q, next_buf(q->first_to_check),
+                                      SLSB_P_INPUT_NOT_INIT, count - 1);
+
+               /*
+                * No siga-sync needed for non-qebsm here, as the inbound queue
+                * will be synced on the next siga-r, resp.
+                * tiqdio_is_inbound_q_done will do the siga-sync.
+                */
+               q->first_to_check = add_buf(q->first_to_check, count);
+               atomic_sub(count, &q->nr_buf_used);
+               goto check_next;
+       case SLSB_P_INPUT_ERROR:
+               announce_buffer_error(q);
+               /* process the buffer, the upper layer will take care of it */
+               q->first_to_check = add_buf(q->first_to_check, count);
+               atomic_sub(count, &q->nr_buf_used);
+               break;
+       case SLSB_CU_INPUT_EMPTY:
+       case SLSB_P_INPUT_NOT_INIT:
+       case SLSB_P_INPUT_ACK:
+               QDIO_DBF_TEXT5(0, trace, "inpnipro");
+               break;
+       default:
+               BUG();
+       }
+out:
+       QDIO_DBF_HEX4(0, trace, &q->first_to_check, sizeof(int));
+       return q->first_to_check;
+}
+
+int qdio_inbound_q_moved(struct qdio_q *q)
+{
+       int bufnr;
+
+       bufnr = get_inbound_buffer_frontier(q);
+
+       if ((bufnr != q->last_move_ftc) || q->qdio_error) {
+               if (!need_siga_sync(q) && !pci_out_supported(q))
+                       q->u.in.timestamp = get_usecs();
+
+               QDIO_DBF_TEXT4(0, trace, "inhasmvd");
+               QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+               return 1;
+       } else
+               return 0;
+}
+
+static int qdio_inbound_q_done(struct qdio_q *q)
+{
+       unsigned char state;
+#ifdef CONFIG_QDIO_DEBUG
+       char dbf_text[15];
+#endif
+
+       if (!atomic_read(&q->nr_buf_used))
+               return 1;
+
+       /*
+        * We need that one for synchronization with the adapter, as it
+        * does a kind of PCI avoidance.
+        */
+       qdio_siga_sync_q(q);
+
+       get_buf_state(q, q->first_to_check, &state);
+       if (state == SLSB_P_INPUT_PRIMED)
+               /* we got something to do */
+               return 0;
+
+       /* on VM, we don't poll, so the q is always done here */
+       if (need_siga_sync(q) || pci_out_supported(q))
+               return 1;
+
+       /*
+        * At this point we know, that inbound first_to_check
+        * has (probably) not moved (see qdio_inbound_processing).
+        */
+       if (get_usecs() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) {
+#ifdef CONFIG_QDIO_DEBUG
+               QDIO_DBF_TEXT4(0, trace, "inqisdon");
+               QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+               sprintf(dbf_text, "pf%02x", q->first_to_check);
+               QDIO_DBF_TEXT4(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+               return 1;
+       } else {
+#ifdef CONFIG_QDIO_DEBUG
+               QDIO_DBF_TEXT4(0, trace, "inqisntd");
+               QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+               sprintf(dbf_text, "pf%02x", q->first_to_check);
+               QDIO_DBF_TEXT4(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+               return 0;
+       }
+}
+
+void qdio_kick_inbound_handler(struct qdio_q *q)
+{
+       int count, start, end;
+#ifdef CONFIG_QDIO_DEBUG
+       char dbf_text[15];
+#endif
+
+       qdio_perf_stat_inc(&perf_stats.inbound_handler);
+
+       start = q->first_to_kick;
+       end = q->first_to_check;
+       if (end >= start)
+               count = end - start;
+       else
+               count = end + QDIO_MAX_BUFFERS_PER_Q - start;
+
+#ifdef CONFIG_QDIO_DEBUG
+       sprintf(dbf_text, "s=%2xc=%2x", start, count);
+       QDIO_DBF_TEXT4(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+
+       if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))
+               return;
+
+       q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr,
+                  start, count, q->irq_ptr->int_parm);
+
+       /* for the next time */
+       q->first_to_kick = q->first_to_check;
+       q->qdio_error = 0;
+}
+
+static void __qdio_inbound_processing(struct qdio_q *q)
+{
+       qdio_perf_stat_inc(&perf_stats.tasklet_inbound);
+again:
+       if (!qdio_inbound_q_moved(q))
+               return;
+
+       qdio_kick_inbound_handler(q);
+
+       if (!qdio_inbound_q_done(q))
+               /* means poll time is not yet over */
+               goto again;
+
+       qdio_stop_polling(q);
+       /*
+        * We need to check again to not lose initiative after
+        * resetting the ACK state.
+        */
+       if (!qdio_inbound_q_done(q))
+               goto again;
+}
+
+/* inbound tasklet */
+void qdio_inbound_processing(unsigned long data)
+{
+       struct qdio_q *q = (struct qdio_q *)data;
+       __qdio_inbound_processing(q);
+}
+
+static int get_outbound_buffer_frontier(struct qdio_q *q)
+{
+       int count, stop;
+       unsigned char state;
+
+       if (((queue_type(q) != QDIO_IQDIO_QFMT) && !pci_out_supported(q)) ||
+           (queue_type(q) == QDIO_IQDIO_QFMT && multicast_outbound(q)))
+               qdio_siga_sync_q(q);
+
+       /*
+        * Don't check 128 buffers, as otherwise qdio_inbound_q_moved
+        * would return 0.
+        */
+       count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK);
+       stop = add_buf(q->first_to_check, count);
+
+       /* need to set count to 1 for non-qebsm */
+       if (!is_qebsm(q))
+               count = 1;
+
+check_next:
+       if (q->first_to_check == stop)
+               return q->first_to_check;
+
+       count = get_buf_states(q, q->first_to_check, &state, count);
+       if (!count)
+               return q->first_to_check;
+
+       switch (state) {
+       case SLSB_P_OUTPUT_EMPTY:
+               /* the adapter got it */
+               QDIO_DBF_TEXT5(0, trace, "outpempt");
+
+               atomic_sub(count, &q->nr_buf_used);
+               q->first_to_check = add_buf(q->first_to_check, count);
+               /*
+                * We fetch all buffer states at once. get_buf_states may
+                * return count < stop. For QEBSM we do not loop.
+                */
+               if (is_qebsm(q))
+                       break;
+               goto check_next;
+       case SLSB_P_OUTPUT_ERROR:
+               announce_buffer_error(q);
+               /* process the buffer, the upper layer will take care of it */
+               q->first_to_check = add_buf(q->first_to_check, count);
+               atomic_sub(count, &q->nr_buf_used);
+               break;
+       case SLSB_CU_OUTPUT_PRIMED:
+               /* the adapter has not fetched the output yet */
+               QDIO_DBF_TEXT5(0, trace, "outpprim");
+               break;
+       case SLSB_P_OUTPUT_NOT_INIT:
+       case SLSB_P_OUTPUT_HALTED:
+               break;
+       default:
+               BUG();
+       }
+       return q->first_to_check;
+}
+
+/* all buffers processed? */
+static inline int qdio_outbound_q_done(struct qdio_q *q)
+{
+       return atomic_read(&q->nr_buf_used) == 0;
+}
+
+static inline int qdio_outbound_q_moved(struct qdio_q *q)
+{
+       int bufnr;
+
+       bufnr = get_outbound_buffer_frontier(q);
+
+       if ((bufnr != q->last_move_ftc) || q->qdio_error) {
+               q->last_move_ftc = bufnr;
+               QDIO_DBF_TEXT4(0, trace, "oqhasmvd");
+               QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+               return 1;
+       } else
+               return 0;
+}
+
+/*
+ * VM could present us cc=2 and busy bit set on SIGA-write
+ * during reconfiguration of their Guest LAN (only in iqdio mode,
+ * otherwise qdio is asynchronous and cc=2 and busy bit there will take
+ * the queues down immediately).
+ *
+ * Therefore qdio_siga_output will try for a short time constantly,
+ * if such a condition occurs. If it doesn't change, it will
+ * increase the busy_siga_counter and save the timestamp, and
+ * schedule the queue for later processing. qdio_outbound_processing
+ * will check out the counter. If non-zero, it will call qdio_kick_outbound_q
+ * as often as the value of the counter. This will attempt further SIGA
+ * instructions. For each successful SIGA, the counter is
+ * decreased, for failing SIGAs the counter remains the same, after
+ * all. After some time of no movement, qdio_kick_outbound_q will
+ * finally fail and reflect corresponding error codes to call
+ * the upper layer module and have it take the queues down.
+ *
+ * Note that this is a change from the original HiperSockets design
+ * (saying cc=2 and busy bit means take the queues down), but in
+ * these days Guest LAN didn't exist... excessive cc=2 with busy bit
+ * conditions will still take the queues down, but the threshold is
+ * higher due to the Guest LAN environment.
+ *
+ * Called from outbound tasklet and do_QDIO handler.
+ */
+static void qdio_kick_outbound_q(struct qdio_q *q)
+{
+       int rc;
+#ifdef CONFIG_QDIO_DEBUG
+       char dbf_text[15];
+
+       QDIO_DBF_TEXT5(0, trace, "kickoutq");
+       QDIO_DBF_HEX5(0, trace, &q, sizeof(void *));
+#endif /* CONFIG_QDIO_DEBUG */
+
+       if (!need_siga_out(q))
+               return;
+
+       rc = qdio_siga_output(q);
+       switch (rc) {
+       case 0:
+               /* went smooth this time, reset timestamp */
+               q->u.out.timestamp = 0;
+
+               /* TODO: improve error handling for CC=0 case */
+#ifdef CONFIG_QDIO_DEBUG
+               QDIO_DBF_TEXT3(0, trace, "cc2reslv");
+               sprintf(dbf_text, "%4x%2x%2x", q->irq_ptr->schid.sch_no, q->nr,
+                       atomic_read(&q->u.out.busy_siga_counter));
+               QDIO_DBF_TEXT3(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+               break;
+       /* cc=2 and busy bit */
+       case (2 | QDIO_ERROR_SIGA_BUSY):
+               atomic_inc(&q->u.out.busy_siga_counter);
+
+               /* if the last siga was successful, save timestamp here */
+               if (!q->u.out.timestamp)
+                       q->u.out.timestamp = get_usecs();
+
+               /* if we're in time, don't touch qdio_error */
+               if (get_usecs() - q->u.out.timestamp < QDIO_BUSY_BIT_GIVE_UP) {
+                       tasklet_schedule(&q->tasklet);
+                       break;
+               }
+               QDIO_DBF_TEXT2(0, trace, "cc2REPRT");
+#ifdef CONFIG_QDIO_DEBUG
+               sprintf(dbf_text, "%4x%2x%2x", q->irq_ptr->schid.sch_no, q->nr,
+                       atomic_read(&q->u.out.busy_siga_counter));
+               QDIO_DBF_TEXT3(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+       default:
+               /* for plain cc=1, 2 or 3 */
+               q->qdio_error = rc;
+       }
+}
+
+static void qdio_kick_outbound_handler(struct qdio_q *q)
+{
+       int start, end, count;
+#ifdef CONFIG_QDIO_DEBUG
+       char dbf_text[15];
+#endif
+
+       start = q->first_to_kick;
+       end = q->last_move_ftc;
+       if (end >= start)
+               count = end - start;
+       else
+               count = end + QDIO_MAX_BUFFERS_PER_Q - start;
+
+#ifdef CONFIG_QDIO_DEBUG
+       QDIO_DBF_TEXT4(0, trace, "kickouth");
+       QDIO_DBF_HEX4(0, trace, &q, sizeof(void *));
+
+       sprintf(dbf_text, "s=%2xc=%2x", start, count);
+       QDIO_DBF_TEXT4(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+
+       if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))
+               return;
+
+       q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count,
+                  q->irq_ptr->int_parm);
+
+       /* for the next time: */
+       q->first_to_kick = q->last_move_ftc;
+       q->qdio_error = 0;
+}
+
+static void __qdio_outbound_processing(struct qdio_q *q)
+{
+       int siga_attempts;
+
+       qdio_perf_stat_inc(&perf_stats.tasklet_outbound);
+
+       /* see comment in qdio_kick_outbound_q */
+       siga_attempts = atomic_read(&q->u.out.busy_siga_counter);
+       while (siga_attempts--) {
+               atomic_dec(&q->u.out.busy_siga_counter);
+               qdio_kick_outbound_q(q);
+       }
+
+       BUG_ON(atomic_read(&q->nr_buf_used) < 0);
+
+       if (qdio_outbound_q_moved(q))
+               qdio_kick_outbound_handler(q);
+
+       if (queue_type(q) == QDIO_ZFCP_QFMT) {
+               if (!pci_out_supported(q) && !qdio_outbound_q_done(q))
+                       tasklet_schedule(&q->tasklet);
+               return;
+       }
+
+       /* bail out for HiperSockets unicast queues */
+       if (queue_type(q) == QDIO_IQDIO_QFMT && !multicast_outbound(q))
+               return;
+
+       if (q->u.out.pci_out_enabled)
+               return;
+
+       /*
+        * Now we know that queue type is either qeth without pci enabled
+        * or HiperSockets multicast. Make sure buffer switch from PRIMED to
+        * EMPTY is noticed and outbound_handler is called after some time.
+        */
+       if (qdio_outbound_q_done(q))
+               del_timer(&q->u.out.timer);
+       else {
+               if (!timer_pending(&q->u.out.timer)) {
+                       mod_timer(&q->u.out.timer, jiffies + 10 * HZ);
+                       qdio_perf_stat_inc(&perf_stats.debug_tl_out_timer);
+               }
+       }
+}
+
+/* outbound tasklet */
+void qdio_outbound_processing(unsigned long data)
+{
+       struct qdio_q *q = (struct qdio_q *)data;
+       __qdio_outbound_processing(q);
+}
+
+void qdio_outbound_timer(unsigned long data)
+{
+       struct qdio_q *q = (struct qdio_q *)data;
+       tasklet_schedule(&q->tasklet);
+}
+
+/* called from thinint inbound tasklet */
+void qdio_check_outbound_after_thinint(struct qdio_q *q)
+{
+       struct qdio_q *out;
+       int i;
+
+       if (!pci_out_supported(q))
+               return;
+
+       for_each_output_queue(q->irq_ptr, out, i)
+               if (!qdio_outbound_q_done(out))
+                       tasklet_schedule(&out->tasklet);
+}
+
+static inline void qdio_set_state(struct qdio_irq *irq_ptr,
+                                 enum qdio_irq_states state)
+{
+#ifdef CONFIG_QDIO_DEBUG
+       char dbf_text[15];
+
+       QDIO_DBF_TEXT5(0, trace, "newstate");
+       sprintf(dbf_text, "%4x%4x", irq_ptr->schid.sch_no, state);
+       QDIO_DBF_TEXT5(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+
+       irq_ptr->state = state;
+       mb();
+}
+
+static void qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
+{
+       char dbf_text[15];
+
+       if (irb->esw.esw0.erw.cons) {
+               sprintf(dbf_text, "sens%4x", schid.sch_no);
+               QDIO_DBF_TEXT2(1, trace, dbf_text);
+               QDIO_DBF_HEX0(0, trace, irb, 64);
+               QDIO_DBF_HEX0(0, trace, irb->ecw, 64);
+       }
+}
+
+/* PCI interrupt handler */
+static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
+{
+       int i;
+       struct qdio_q *q;
+
+       qdio_perf_stat_inc(&perf_stats.pci_int);
+
+       for_each_input_queue(irq_ptr, q, i)
+               tasklet_schedule(&q->tasklet);
+
+       if (!(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED))
+               return;
+
+       for_each_output_queue(irq_ptr, q, i) {
+               if (qdio_outbound_q_done(q))
+                       continue;
+
+               if (!siga_syncs_out_pci(q))
+                       qdio_siga_sync_q(q);
+
+               tasklet_schedule(&q->tasklet);
+       }
+}
+
+static void qdio_handle_activate_check(struct ccw_device *cdev,
+                               unsigned long intparm, int cstat, int dstat)
+{
+       struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+       struct qdio_q *q;
+       char dbf_text[15];
+
+       QDIO_DBF_TEXT2(1, trace, "ick2");
+       sprintf(dbf_text, "%s", cdev->dev.bus_id);
+       QDIO_DBF_TEXT2(1, trace, dbf_text);
+       QDIO_DBF_HEX2(0, trace, &intparm, sizeof(int));
+       QDIO_DBF_HEX2(0, trace, &dstat, sizeof(int));
+       QDIO_DBF_HEX2(0, trace, &cstat, sizeof(int));
+
+       if (irq_ptr->nr_input_qs) {
+               q = irq_ptr->input_qs[0];
+       } else if (irq_ptr->nr_output_qs) {
+               q = irq_ptr->output_qs[0];
+       } else {
+               dump_stack();
+               goto no_handler;
+       }
+       q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION,
+                  0, -1, -1, irq_ptr->int_parm);
+no_handler:
+       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
+}
+
+static void qdio_call_shutdown(struct work_struct *work)
+{
+       struct ccw_device_private *priv;
+       struct ccw_device *cdev;
+
+       priv = container_of(work, struct ccw_device_private, kick_work);
+       cdev = priv->cdev;
+       qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
+       put_device(&cdev->dev);
+}
+
+static void qdio_int_error(struct ccw_device *cdev)
+{
+       struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+
+       switch (irq_ptr->state) {
+       case QDIO_IRQ_STATE_INACTIVE:
+       case QDIO_IRQ_STATE_CLEANUP:
+               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
+               break;
+       case QDIO_IRQ_STATE_ESTABLISHED:
+       case QDIO_IRQ_STATE_ACTIVE:
+               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
+               if (get_device(&cdev->dev)) {
+                       /* Can't call shutdown from interrupt context. */
+                       PREPARE_WORK(&cdev->private->kick_work,
+                                    qdio_call_shutdown);
+                       queue_work(ccw_device_work, &cdev->private->kick_work);
+               }
+               break;
+       default:
+               WARN_ON(1);
+       }
+       wake_up(&cdev->private->wait_q);
+}
+
+static int qdio_establish_check_errors(struct ccw_device *cdev, int cstat,
+                                          int dstat)
+{
+       struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+
+       if (cstat || (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END))) {
+               QDIO_DBF_TEXT2(1, setup, "eq:ckcon");
+               goto error;
+       }
+
+       if (!(dstat & DEV_STAT_DEV_END)) {
+               QDIO_DBF_TEXT2(1, setup, "eq:no de");
+               goto error;
+       }
+
+       if (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) {
+               QDIO_DBF_TEXT2(1, setup, "eq:badio");
+               goto error;
+       }
+       return 0;
+error:
+       QDIO_DBF_HEX2(0, trace, &cstat, sizeof(int));
+       QDIO_DBF_HEX2(0, trace, &dstat, sizeof(int));
+       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
+       return 1;
+}
+
+static void qdio_establish_handle_irq(struct ccw_device *cdev, int cstat,
+                                     int dstat)
+{
+       struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+       char dbf_text[15];
+
+       sprintf(dbf_text, "qehi%4x", cdev->private->schid.sch_no);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_TEXT0(0, trace, dbf_text);
+
+       if (!qdio_establish_check_errors(cdev, cstat, dstat))
+               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED);
+}
+
+/* qdio interrupt handler */
+void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
+                     struct irb *irb)
+{
+       struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+       int cstat, dstat;
+       char dbf_text[15];
+
+       qdio_perf_stat_inc(&perf_stats.qdio_int);
+
+       if (!intparm || !irq_ptr) {
+               sprintf(dbf_text, "qihd%4x", cdev->private->schid.sch_no);
+               QDIO_DBF_TEXT2(1, setup, dbf_text);
+               return;
+       }
+
+       if (IS_ERR(irb)) {
+               switch (PTR_ERR(irb)) {
+               case -EIO:
+                       sprintf(dbf_text, "ierr%4x",
+                               cdev->private->schid.sch_no);
+                       QDIO_DBF_TEXT2(1, setup, dbf_text);
+                       qdio_int_error(cdev);
+                       return;
+               case -ETIMEDOUT:
+                       sprintf(dbf_text, "qtoh%4x",
+                               cdev->private->schid.sch_no);
+                       QDIO_DBF_TEXT2(1, setup, dbf_text);
+                       qdio_int_error(cdev);
+                       return;
+               default:
+                       WARN_ON(1);
+                       return;
+               }
+       }
+       qdio_irq_check_sense(irq_ptr->schid, irb);
+
+       cstat = irb->scsw.cmd.cstat;
+       dstat = irb->scsw.cmd.dstat;
+
+       switch (irq_ptr->state) {
+       case QDIO_IRQ_STATE_INACTIVE:
+               qdio_establish_handle_irq(cdev, cstat, dstat);
+               break;
+
+       case QDIO_IRQ_STATE_CLEANUP:
+               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
+               break;
+
+       case QDIO_IRQ_STATE_ESTABLISHED:
+       case QDIO_IRQ_STATE_ACTIVE:
+               if (cstat & SCHN_STAT_PCI) {
+                       qdio_int_handler_pci(irq_ptr);
+                       /* no state change so no need to wake up wait_q */
+                       return;
+               }
+               if ((cstat & ~SCHN_STAT_PCI) || dstat) {
+                       qdio_handle_activate_check(cdev, intparm, cstat,
+                                                  dstat);
+                       break;
+               }
+       default:
+               WARN_ON(1);
+       }
+       wake_up(&cdev->private->wait_q);
+}
+
+/**
+ * qdio_get_ssqd_desc - get qdio subchannel description
+ * @cdev: ccw device to get description for
+ *
+ * Returns a pointer to the saved qdio subchannel description,
+ * or NULL for not setup qdio devices.
+ */
+struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev)
+{
+       struct qdio_irq *irq_ptr;
+
+       QDIO_DBF_TEXT0(0, setup, "getssqd");
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return NULL;
+
+       return &irq_ptr->ssqd_desc;
+}
+EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc);
+
+/**
+ * qdio_cleanup - shutdown queues and free data structures
+ * @cdev: associated ccw device
+ * @how: use halt or clear to shutdown
+ *
+ * This function calls qdio_shutdown() for @cdev with method @how
+ * and on success qdio_free() for @cdev.
+ */
+int qdio_cleanup(struct ccw_device *cdev, int how)
+{
+       struct qdio_irq *irq_ptr;
+       char dbf_text[15];
+       int rc;
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return -ENODEV;
+
+       sprintf(dbf_text, "qcln%4x", irq_ptr->schid.sch_no);
+       QDIO_DBF_TEXT1(0, trace, dbf_text);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+
+       rc = qdio_shutdown(cdev, how);
+       if (rc == 0)
+               rc = qdio_free(cdev);
+       return rc;
+}
+EXPORT_SYMBOL_GPL(qdio_cleanup);
+
+static void qdio_shutdown_queues(struct ccw_device *cdev)
+{
+       struct qdio_irq *irq_ptr = cdev->private->qdio_data;
+       struct qdio_q *q;
+       int i;
+
+       for_each_input_queue(irq_ptr, q, i)
+               tasklet_disable(&q->tasklet);
+
+       for_each_output_queue(irq_ptr, q, i) {
+               tasklet_disable(&q->tasklet);
+               del_timer(&q->u.out.timer);
+       }
+}
+
+/**
+ * qdio_shutdown - shut down a qdio subchannel
+ * @cdev: associated ccw device
+ * @how: use halt or clear to shutdown
+ */
+int qdio_shutdown(struct ccw_device *cdev, int how)
+{
+       struct qdio_irq *irq_ptr;
+       int rc;
+       unsigned long flags;
+       char dbf_text[15];
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return -ENODEV;
+
+       mutex_lock(&irq_ptr->setup_mutex);
+       /*
+        * Subchannel was already shot down. We cannot prevent being called
+        * twice since cio may trigger a shutdown asynchronously.
+        */
+       if (irq_ptr->state == QDIO_IRQ_STATE_INACTIVE) {
+               mutex_unlock(&irq_ptr->setup_mutex);
+               return 0;
+       }
+
+       sprintf(dbf_text, "qsqs%4x", irq_ptr->schid.sch_no);
+       QDIO_DBF_TEXT1(0, trace, dbf_text);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+
+       tiqdio_remove_input_queues(irq_ptr);
+       qdio_shutdown_queues(cdev);
+       qdio_shutdown_debug_entries(irq_ptr, cdev);
+
+       /* cleanup subchannel */
+       spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
+
+       if (how & QDIO_FLAG_CLEANUP_USING_CLEAR)
+               rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
+       else
+               /* default behaviour is halt */
+               rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
+       if (rc) {
+               sprintf(dbf_text, "sher%4x", irq_ptr->schid.sch_no);
+               QDIO_DBF_TEXT0(0, setup, dbf_text);
+               sprintf(dbf_text, "rc=%d", rc);
+               QDIO_DBF_TEXT0(0, setup, dbf_text);
+               goto no_cleanup;
+       }
+
+       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
+       spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
+       wait_event_interruptible_timeout(cdev->private->wait_q,
+               irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
+               irq_ptr->state == QDIO_IRQ_STATE_ERR,
+               10 * HZ);
+       spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
+
+no_cleanup:
+       qdio_shutdown_thinint(irq_ptr);
+
+       /* restore interrupt handler */
+       if ((void *)cdev->handler == (void *)qdio_int_handler)
+               cdev->handler = irq_ptr->orig_handler;
+       spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
+
+       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
+       mutex_unlock(&irq_ptr->setup_mutex);
+       module_put(THIS_MODULE);
+       if (rc)
+               return rc;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(qdio_shutdown);
+
+/**
+ * qdio_free - free data structures for a qdio subchannel
+ * @cdev: associated ccw device
+ */
+int qdio_free(struct ccw_device *cdev)
+{
+       struct qdio_irq *irq_ptr;
+       char dbf_text[15];
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return -ENODEV;
+
+       mutex_lock(&irq_ptr->setup_mutex);
+
+       sprintf(dbf_text, "qfqs%4x", irq_ptr->schid.sch_no);
+       QDIO_DBF_TEXT1(0, trace, dbf_text);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+
+       cdev->private->qdio_data = NULL;
+       mutex_unlock(&irq_ptr->setup_mutex);
+
+       qdio_release_memory(irq_ptr);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(qdio_free);
+
+/**
+ * qdio_initialize - allocate and establish queues for a qdio subchannel
+ * @init_data: initialization data
+ *
+ * This function first allocates queues via qdio_allocate() and on success
+ * establishes them via qdio_establish().
+ */
+int qdio_initialize(struct qdio_initialize *init_data)
+{
+       int rc;
+       char dbf_text[15];
+
+       sprintf(dbf_text, "qini%4x", init_data->cdev->private->schid.sch_no);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_TEXT0(0, trace, dbf_text);
+
+       rc = qdio_allocate(init_data);
+       if (rc)
+               return rc;
+
+       rc = qdio_establish(init_data);
+       if (rc)
+               qdio_free(init_data->cdev);
+       return rc;
+}
+EXPORT_SYMBOL_GPL(qdio_initialize);
+
+/**
+ * qdio_allocate - allocate qdio queues and associated data
+ * @init_data: initialization data
+ */
+int qdio_allocate(struct qdio_initialize *init_data)
+{
+       struct qdio_irq *irq_ptr;
+       char dbf_text[15];
+
+       sprintf(dbf_text, "qalc%4x", init_data->cdev->private->schid.sch_no);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_TEXT0(0, trace, dbf_text);
+
+       if ((init_data->no_input_qs && !init_data->input_handler) ||
+           (init_data->no_output_qs && !init_data->output_handler))
+               return -EINVAL;
+
+       if ((init_data->no_input_qs > QDIO_MAX_QUEUES_PER_IRQ) ||
+           (init_data->no_output_qs > QDIO_MAX_QUEUES_PER_IRQ))
+               return -EINVAL;
+
+       if ((!init_data->input_sbal_addr_array) ||
+           (!init_data->output_sbal_addr_array))
+               return -EINVAL;
+
+       qdio_allocate_do_dbf(init_data);
+
+       /* irq_ptr must be in GFP_DMA since it contains ccw1.cda */
+       irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+       if (!irq_ptr)
+               goto out_err;
+       QDIO_DBF_TEXT0(0, setup, "irq_ptr:");
+       QDIO_DBF_HEX0(0, setup, &irq_ptr, sizeof(void *));
+
+       mutex_init(&irq_ptr->setup_mutex);
+
+       /*
+        * Allocate a page for the chsc calls in qdio_establish.
+        * Must be pre-allocated since a zfcp recovery will call
+        * qdio_establish. In case of low memory and swap on a zfcp disk
+        * we may not be able to allocate memory otherwise.
+        */
+       irq_ptr->chsc_page = get_zeroed_page(GFP_KERNEL);
+       if (!irq_ptr->chsc_page)
+               goto out_rel;
+
+       /* qdr is used in ccw1.cda which is u32 */
+       irq_ptr->qdr = kzalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
+       if (!irq_ptr->qdr)
+               goto out_rel;
+       WARN_ON((unsigned long)irq_ptr->qdr & 0xfff);
+
+       QDIO_DBF_TEXT0(0, setup, "qdr:");
+       QDIO_DBF_HEX0(0, setup, &irq_ptr->qdr, sizeof(void *));
+
+       if (qdio_allocate_qs(irq_ptr, init_data->no_input_qs,
+                            init_data->no_output_qs))
+               goto out_rel;
+
+       init_data->cdev->private->qdio_data = irq_ptr;
+       qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
+       return 0;
+out_rel:
+       qdio_release_memory(irq_ptr);
+out_err:
+       return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(qdio_allocate);
+
+/**
+ * qdio_establish - establish queues on a qdio subchannel
+ * @init_data: initialization data
+ */
+int qdio_establish(struct qdio_initialize *init_data)
+{
+       char dbf_text[20];
+       struct qdio_irq *irq_ptr;
+       struct ccw_device *cdev = init_data->cdev;
+       unsigned long saveflags;
+       int rc;
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return -ENODEV;
+
+       if (cdev->private->state != DEV_STATE_ONLINE)
+               return -EINVAL;
+
+       if (!try_module_get(THIS_MODULE))
+               return -EINVAL;
+
+       sprintf(dbf_text, "qest%4x", cdev->private->schid.sch_no);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_TEXT0(0, trace, dbf_text);
+
+       mutex_lock(&irq_ptr->setup_mutex);
+       qdio_setup_irq(init_data);
+
+       rc = qdio_establish_thinint(irq_ptr);
+       if (rc) {
+               mutex_unlock(&irq_ptr->setup_mutex);
+               qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
+               return rc;
+       }
+
+       /* establish q */
+       irq_ptr->ccw.cmd_code = irq_ptr->equeue.cmd;
+       irq_ptr->ccw.flags = CCW_FLAG_SLI;
+       irq_ptr->ccw.count = irq_ptr->equeue.count;
+       irq_ptr->ccw.cda = (u32)((addr_t)irq_ptr->qdr);
+
+       spin_lock_irqsave(get_ccwdev_lock(cdev), saveflags);
+       ccw_device_set_options_mask(cdev, 0);
+
+       rc = ccw_device_start(cdev, &irq_ptr->ccw, QDIO_DOING_ESTABLISH, 0, 0);
+       if (rc) {
+               sprintf(dbf_text, "eq:io%4x", irq_ptr->schid.sch_no);
+               QDIO_DBF_TEXT2(1, setup, dbf_text);
+               sprintf(dbf_text, "eq:rc%4x", rc);
+               QDIO_DBF_TEXT2(1, setup, dbf_text);
+       }
+       spin_unlock_irqrestore(get_ccwdev_lock(cdev), saveflags);
+
+       if (rc) {
+               mutex_unlock(&irq_ptr->setup_mutex);
+               qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
+               return rc;
+       }
+
+       wait_event_interruptible_timeout(cdev->private->wait_q,
+               irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
+               irq_ptr->state == QDIO_IRQ_STATE_ERR, HZ);
+
+       if (irq_ptr->state != QDIO_IRQ_STATE_ESTABLISHED) {
+               mutex_unlock(&irq_ptr->setup_mutex);
+               qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
+               return -EIO;
+       }
+
+       qdio_setup_ssqd_info(irq_ptr);
+       sprintf(dbf_text, "qib ac%2x", irq_ptr->qib.ac);
+       QDIO_DBF_TEXT2(0, setup, dbf_text);
+
+       /* qebsm is now setup if available, initialize buffer states */
+       qdio_init_buf_states(irq_ptr);
+
+       mutex_unlock(&irq_ptr->setup_mutex);
+       qdio_print_subchannel_info(irq_ptr, cdev);
+       qdio_setup_debug_entries(irq_ptr, cdev);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(qdio_establish);
+
+/**
+ * qdio_activate - activate queues on a qdio subchannel
+ * @cdev: associated cdev
+ */
+int qdio_activate(struct ccw_device *cdev)
+{
+       struct qdio_irq *irq_ptr;
+       int rc;
+       unsigned long saveflags;
+       char dbf_text[20];
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return -ENODEV;
+
+       if (cdev->private->state != DEV_STATE_ONLINE)
+               return -EINVAL;
+
+       mutex_lock(&irq_ptr->setup_mutex);
+       if (irq_ptr->state == QDIO_IRQ_STATE_INACTIVE) {
+               rc = -EBUSY;
+               goto out;
+       }
+
+       sprintf(dbf_text, "qact%4x", irq_ptr->schid.sch_no);
+       QDIO_DBF_TEXT2(0, setup, dbf_text);
+       QDIO_DBF_TEXT2(0, trace, dbf_text);
+
+       irq_ptr->ccw.cmd_code = irq_ptr->aqueue.cmd;
+       irq_ptr->ccw.flags = CCW_FLAG_SLI;
+       irq_ptr->ccw.count = irq_ptr->aqueue.count;
+       irq_ptr->ccw.cda = 0;
+
+       spin_lock_irqsave(get_ccwdev_lock(cdev), saveflags);
+       ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
+
+       rc = ccw_device_start(cdev, &irq_ptr->ccw, QDIO_DOING_ACTIVATE,
+                             0, DOIO_DENY_PREFETCH);
+       if (rc) {
+               sprintf(dbf_text, "aq:io%4x", irq_ptr->schid.sch_no);
+               QDIO_DBF_TEXT2(1, setup, dbf_text);
+               sprintf(dbf_text, "aq:rc%4x", rc);
+               QDIO_DBF_TEXT2(1, setup, dbf_text);
+       }
+       spin_unlock_irqrestore(get_ccwdev_lock(cdev), saveflags);
+
+       if (rc)
+               goto out;
+
+       if (is_thinint_irq(irq_ptr))
+               tiqdio_add_input_queues(irq_ptr);
+
+       /* wait for subchannel to become active */
+       msleep(5);
+
+       switch (irq_ptr->state) {
+       case QDIO_IRQ_STATE_STOPPED:
+       case QDIO_IRQ_STATE_ERR:
+               mutex_unlock(&irq_ptr->setup_mutex);
+               qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
+               return -EIO;
+       default:
+               qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
+               rc = 0;
+       }
+out:
+       mutex_unlock(&irq_ptr->setup_mutex);
+       return rc;
+}
+EXPORT_SYMBOL_GPL(qdio_activate);
+
+static inline int buf_in_between(int bufnr, int start, int count)
+{
+       int end = add_buf(start, count);
+
+       if (end > start) {
+               if (bufnr >= start && bufnr < end)
+                       return 1;
+               else
+                       return 0;
+       }
+
+       /* wrap-around case */
+       if ((bufnr >= start && bufnr <= QDIO_MAX_BUFFERS_PER_Q) ||
+           (bufnr < end))
+               return 1;
+       else
+               return 0;
+}
+
+/**
+ * handle_inbound - reset processed input buffers
+ * @q: queue containing the buffers
+ * @callflags: flags
+ * @bufnr: first buffer to process
+ * @count: how many buffers are emptied
+ */
+static void handle_inbound(struct qdio_q *q, unsigned int callflags,
+                          int bufnr, int count)
+{
+       unsigned long flags;
+       int used, rc;
+
+       /*
+        * do_QDIO could run in parallel with the queue tasklet so the
+        * upper-layer programm could empty the ACK'ed buffer here.
+        * If that happens we must clear the polling flag, otherwise
+        * qdio_stop_polling() could set the buffer to NOT_INIT after
+        * it was set to EMPTY which would kill us.
+        */
+       spin_lock_irqsave(&q->u.in.lock, flags);
+       if (q->u.in.polling)
+               if (buf_in_between(q->last_move_ftc, bufnr, count))
+                       q->u.in.polling = 0;
+
+       count = set_buf_states(q, bufnr, SLSB_CU_INPUT_EMPTY, count);
+       spin_unlock_irqrestore(&q->u.in.lock, flags);
+
+       used = atomic_add_return(count, &q->nr_buf_used) - count;
+       BUG_ON(used + count > QDIO_MAX_BUFFERS_PER_Q);
+
+       /* no need to signal as long as the adapter had free buffers */
+       if (used)
+               return;
+
+       if (need_siga_in(q)) {
+               rc = qdio_siga_input(q);
+               if (rc)
+                       q->qdio_error = rc;
+       }
+}
+
+/**
+ * handle_outbound - process filled outbound buffers
+ * @q: queue containing the buffers
+ * @callflags: flags
+ * @bufnr: first buffer to process
+ * @count: how many buffers are filled
+ */
+static void handle_outbound(struct qdio_q *q, unsigned int callflags,
+                           int bufnr, int count)
+{
+       unsigned char state;
+       int used;
+
+       qdio_perf_stat_inc(&perf_stats.outbound_handler);
+
+       count = set_buf_states(q, bufnr, SLSB_CU_OUTPUT_PRIMED, count);
+       used = atomic_add_return(count, &q->nr_buf_used);
+       BUG_ON(used > QDIO_MAX_BUFFERS_PER_Q);
+
+       if (callflags & QDIO_FLAG_PCI_OUT)
+               q->u.out.pci_out_enabled = 1;
+       else
+               q->u.out.pci_out_enabled = 0;
+
+       if (queue_type(q) == QDIO_IQDIO_QFMT) {
+               if (multicast_outbound(q))
+                       qdio_kick_outbound_q(q);
+               else
+                       /*
+                        * One siga-w per buffer required for unicast
+                        * HiperSockets.
+                        */
+                       while (count--)
+                               qdio_kick_outbound_q(q);
+               goto out;
+       }
+
+       if (need_siga_sync(q)) {
+               qdio_siga_sync_q(q);
+               goto out;
+       }
+
+       /* try to fast requeue buffers */
+       get_buf_state(q, prev_buf(bufnr), &state);
+       if (state != SLSB_CU_OUTPUT_PRIMED)
+               qdio_kick_outbound_q(q);
+       else {
+               QDIO_DBF_TEXT5(0, trace, "fast-req");
+               qdio_perf_stat_inc(&perf_stats.fast_requeue);
+       }
+out:
+       /* Fixme: could wait forever if called from process context */
+       tasklet_schedule(&q->tasklet);
+}
+
+/**
+ * do_QDIO - process input or output buffers
+ * @cdev: associated ccw_device for the qdio subchannel
+ * @callflags: input or output and special flags from the program
+ * @q_nr: queue number
+ * @bufnr: buffer number
+ * @count: how many buffers to process
+ */
+int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
+           int q_nr, int bufnr, int count)
+{
+       struct qdio_irq *irq_ptr;
+#ifdef CONFIG_QDIO_DEBUG
+       char dbf_text[20];
+
+       sprintf(dbf_text, "doQD%04x", cdev->private->schid.sch_no);
+       QDIO_DBF_TEXT3(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+
+       if ((bufnr > QDIO_MAX_BUFFERS_PER_Q) ||
+           (count > QDIO_MAX_BUFFERS_PER_Q) ||
+           (q_nr > QDIO_MAX_QUEUES_PER_IRQ))
+               return -EINVAL;
+
+       if (!count)
+               return 0;
+
+       irq_ptr = cdev->private->qdio_data;
+       if (!irq_ptr)
+               return -ENODEV;
+
+#ifdef CONFIG_QDIO_DEBUG
+       if (callflags & QDIO_FLAG_SYNC_INPUT)
+               QDIO_DBF_HEX3(0, trace, &irq_ptr->input_qs[q_nr],
+                             sizeof(void *));
+       else
+               QDIO_DBF_HEX3(0, trace, &irq_ptr->output_qs[q_nr],
+                             sizeof(void *));
+
+       sprintf(dbf_text, "flag%04x", callflags);
+       QDIO_DBF_TEXT3(0, trace, dbf_text);
+       sprintf(dbf_text, "qi%02xct%02x", bufnr, count);
+       QDIO_DBF_TEXT3(0, trace, dbf_text);
+#endif /* CONFIG_QDIO_DEBUG */
+
+       if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)
+               return -EBUSY;
+
+       if (callflags & QDIO_FLAG_SYNC_INPUT)
+               handle_inbound(irq_ptr->input_qs[q_nr],
+                              callflags, bufnr, count);
+       else if (callflags & QDIO_FLAG_SYNC_OUTPUT)
+               handle_outbound(irq_ptr->output_qs[q_nr],
+                               callflags, bufnr, count);
+       else {
+               QDIO_DBF_TEXT3(1, trace, "doQD:inv");
+               return -EINVAL;
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(do_QDIO);
+
+static int __init init_QDIO(void)
+{
+       int rc;
+
+       rc = qdio_setup_init();
+       if (rc)
+               return rc;
+       rc = tiqdio_allocate_memory();
+       if (rc)
+               goto out_cache;
+       rc = qdio_debug_init();
+       if (rc)
+               goto out_ti;
+       rc = qdio_setup_perf_stats();
+       if (rc)
+               goto out_debug;
+       rc = tiqdio_register_thinints();
+       if (rc)
+               goto out_perf;
+       return 0;
+
+out_perf:
+       qdio_remove_perf_stats();
+out_debug:
+       qdio_debug_exit();
+out_ti:
+       tiqdio_free_memory();
+out_cache:
+       qdio_setup_exit();
+       return rc;
+}
+
+static void __exit exit_QDIO(void)
+{
+       tiqdio_unregister_thinints();
+       tiqdio_free_memory();
+       qdio_remove_perf_stats();
+       qdio_debug_exit();
+       qdio_setup_exit();
+}
+
+module_init(init_QDIO);
+module_exit(exit_QDIO);
diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c
new file mode 100644 (file)
index 0000000..ea01b85
--- /dev/null
@@ -0,0 +1,151 @@
+/*
+ *  drivers/s390/cio/qdio_perf.c
+ *
+ *  Copyright IBM Corp. 2008
+ *
+ *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
+ */
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/ccwdev.h>
+
+#include "cio.h"
+#include "css.h"
+#include "device.h"
+#include "ioasm.h"
+#include "chsc.h"
+#include "qdio_debug.h"
+#include "qdio_perf.h"
+
+int qdio_performance_stats;
+struct qdio_perf_stats perf_stats;
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *qdio_perf_pde;
+#endif
+
+inline void qdio_perf_stat_inc(atomic_long_t *count)
+{
+       if (qdio_performance_stats)
+               atomic_long_inc(count);
+}
+
+inline void qdio_perf_stat_dec(atomic_long_t *count)
+{
+       if (qdio_performance_stats)
+               atomic_long_dec(count);
+}
+
+/*
+ * procfs functions
+ */
+static int qdio_perf_proc_show(struct seq_file *m, void *v)
+{
+       seq_printf(m, "Number of qdio interrupts\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.qdio_int));
+       seq_printf(m, "Number of PCI interrupts\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.pci_int));
+       seq_printf(m, "Number of adapter interrupts\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.thin_int));
+       seq_printf(m, "\n");
+       seq_printf(m, "Inbound tasklet runs\t\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.tasklet_inbound));
+       seq_printf(m, "Outbound tasklet runs\t\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.tasklet_outbound));
+       seq_printf(m, "Adapter interrupt tasklet runs/loops\t\t: %li/%li\n",
+                  (long)atomic_long_read(&perf_stats.tasklet_thinint),
+                  (long)atomic_long_read(&perf_stats.tasklet_thinint_loop));
+       seq_printf(m, "Adapter interrupt inbound tasklet runs/loops\t: %li/%li\n",
+                  (long)atomic_long_read(&perf_stats.thinint_inbound),
+                  (long)atomic_long_read(&perf_stats.thinint_inbound_loop));
+       seq_printf(m, "\n");
+       seq_printf(m, "Number of SIGA In issued\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.siga_in));
+       seq_printf(m, "Number of SIGA Out issued\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.siga_out));
+       seq_printf(m, "Number of SIGA Sync issued\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.siga_sync));
+       seq_printf(m, "\n");
+       seq_printf(m, "Number of inbound transfers\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.inbound_handler));
+       seq_printf(m, "Number of outbound transfers\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.outbound_handler));
+       seq_printf(m, "\n");
+       seq_printf(m, "Number of fast requeues (outg. SBAL w/o SIGA)\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.fast_requeue));
+       seq_printf(m, "Number of outbound tasklet mod_timer calls\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.debug_tl_out_timer));
+       seq_printf(m, "Number of stop polling calls\t\t\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.debug_stop_polling));
+       seq_printf(m, "AI inbound tasklet loops after stop polling\t: %li\n",
+                  (long)atomic_long_read(&perf_stats.thinint_inbound_loop2));
+       seq_printf(m, "\n");
+       return 0;
+}
+static int qdio_perf_seq_open(struct inode *inode, struct file *filp)
+{
+       return single_open(filp, qdio_perf_proc_show, NULL);
+}
+
+static struct file_operations qdio_perf_proc_fops = {
+       .owner   = THIS_MODULE,
+       .open    = qdio_perf_seq_open,
+       .read    = seq_read,
+       .llseek  = seq_lseek,
+       .release = single_release,
+};
+
+/*
+ * sysfs functions
+ */
+static ssize_t qdio_perf_stats_show(struct bus_type *bus, char *buf)
+{
+       return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
+}
+
+static ssize_t qdio_perf_stats_store(struct bus_type *bus,
+                             const char *buf, size_t count)
+{
+       unsigned long i;
+
+       if (strict_strtoul(buf, 16, &i) != 0)
+               return -EINVAL;
+       if ((i != 0) && (i != 1))
+               return -EINVAL;
+       if (i == qdio_performance_stats)
+               return count;
+
+       qdio_performance_stats = i;
+       /* reset performance statistics */
+       if (i == 0)
+               memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
+       return count;
+}
+
+static BUS_ATTR(qdio_performance_stats, 0644, qdio_perf_stats_show,
+               qdio_perf_stats_store);
+
+int __init qdio_setup_perf_stats(void)
+{
+       int rc;
+
+       rc = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
+       if (rc)
+               return rc;
+
+#ifdef CONFIG_PROC_FS
+       memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
+       qdio_perf_pde = proc_create("qdio_perf", S_IFREG | S_IRUGO,
+                                   NULL, &qdio_perf_proc_fops);
+#endif
+       return 0;
+}
+
+void __exit qdio_remove_perf_stats(void)
+{
+#ifdef CONFIG_PROC_FS
+       remove_proc_entry("qdio_perf", NULL);
+#endif
+       bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
+}
diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h
new file mode 100644 (file)
index 0000000..5c406a8
--- /dev/null
@@ -0,0 +1,54 @@
+/*
+ *  drivers/s390/cio/qdio_perf.h
+ *
+ *  Copyright IBM Corp. 2008
+ *
+ *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
+ */
+#ifndef QDIO_PERF_H
+#define QDIO_PERF_H
+
+#include <linux/types.h>
+#include <linux/device.h>
+#include <asm/atomic.h>
+
+struct qdio_perf_stats {
+       /* interrupt handler calls */
+       atomic_long_t qdio_int;
+       atomic_long_t pci_int;
+       atomic_long_t thin_int;
+
+       /* tasklet runs */
+       atomic_long_t tasklet_inbound;
+       atomic_long_t tasklet_outbound;
+       atomic_long_t tasklet_thinint;
+       atomic_long_t tasklet_thinint_loop;
+       atomic_long_t thinint_inbound;
+       atomic_long_t thinint_inbound_loop;
+       atomic_long_t thinint_inbound_loop2;
+
+       /* signal adapter calls */
+       atomic_long_t siga_out;
+       atomic_long_t siga_in;
+       atomic_long_t siga_sync;
+
+       /* misc */
+       atomic_long_t inbound_handler;
+       atomic_long_t outbound_handler;
+       atomic_long_t fast_requeue;
+
+       /* for debugging */
+       atomic_long_t debug_tl_out_timer;
+       atomic_long_t debug_stop_polling;
+};
+
+extern struct qdio_perf_stats perf_stats;
+extern int qdio_performance_stats;
+
+int qdio_setup_perf_stats(void);
+void qdio_remove_perf_stats(void);
+
+extern void qdio_perf_stat_inc(atomic_long_t *count);
+extern void qdio_perf_stat_dec(atomic_long_t *count);
+
+#endif
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
new file mode 100644 (file)
index 0000000..f0923a8
--- /dev/null
@@ -0,0 +1,521 @@
+/*
+ * driver/s390/cio/qdio_setup.c
+ *
+ * qdio queue initialization
+ *
+ * Copyright (C) IBM Corp. 2008
+ * Author(s): Jan Glauber <jang@linux.vnet.ibm.com>
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <asm/qdio.h>
+
+#include "cio.h"
+#include "css.h"
+#include "device.h"
+#include "ioasm.h"
+#include "chsc.h"
+#include "qdio.h"
+#include "qdio_debug.h"
+
+static struct kmem_cache *qdio_q_cache;
+
+/*
+ * qebsm is only available under 64bit but the adapter sets the feature
+ * flag anyway, so we manually override it.
+ */
+static inline int qebsm_possible(void)
+{
+#ifdef CONFIG_64BIT
+       return css_general_characteristics.qebsm;
+#endif
+       return 0;
+}
+
+/*
+ * qib_param_field: pointer to 128 bytes or NULL, if no param field
+ * nr_input_qs: pointer to nr_queues*128 words of data or NULL
+ */
+static void set_impl_params(struct qdio_irq *irq_ptr,
+                           unsigned int qib_param_field_format,
+                           unsigned char *qib_param_field,
+                           unsigned long *input_slib_elements,
+                           unsigned long *output_slib_elements)
+{
+       struct qdio_q *q;
+       int i, j;
+
+       if (!irq_ptr)
+               return;
+
+       WARN_ON((unsigned long)&irq_ptr->qib & 0xff);
+       irq_ptr->qib.pfmt = qib_param_field_format;
+       if (qib_param_field)
+               memcpy(irq_ptr->qib.parm, qib_param_field,
+                      QDIO_MAX_BUFFERS_PER_Q);
+
+       if (!input_slib_elements)
+               goto output;
+
+       for_each_input_queue(irq_ptr, q, i) {
+               for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
+                       q->slib->slibe[j].parms =
+                               input_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j];
+       }
+output:
+       if (!output_slib_elements)
+               return;
+
+       for_each_output_queue(irq_ptr, q, i) {
+               for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
+                       q->slib->slibe[j].parms =
+                               output_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j];
+       }
+}
+
+static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
+{
+       struct qdio_q *q;
+       int i;
+
+       for (i = 0; i < nr_queues; i++) {
+               q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
+               if (!q)
+                       return -ENOMEM;
+               WARN_ON((unsigned long)q & 0xff);
+
+               q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
+               if (!q->slib) {
+                       kmem_cache_free(qdio_q_cache, q);
+                       return -ENOMEM;
+               }
+               WARN_ON((unsigned long)q->slib & 0x7ff);
+               irq_ptr_qs[i] = q;
+       }
+       return 0;
+}
+
+int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs)
+{
+       int rc;
+
+       rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs);
+       if (rc)
+               return rc;
+       rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs);
+       return rc;
+}
+
+static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
+                             qdio_handler_t *handler, int i)
+{
+       /* must be cleared by every qdio_establish */
+       memset(q, 0, ((char *)&q->slib) - ((char *)q));
+       memset(q->slib, 0, PAGE_SIZE);
+
+       q->irq_ptr = irq_ptr;
+       q->mask = 1 << (31 - i);
+       q->nr = i;
+       q->handler = handler;
+}
+
+static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
+                               void **sbals_array, char *dbf_text, int i)
+{
+       struct qdio_q *prev;
+       int j;
+
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       QDIO_DBF_HEX0(0, setup, &q, sizeof(void *));
+
+       q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2);
+
+       /* fill in sbal */
+       for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) {
+               q->sbal[j] = *sbals_array++;
+               WARN_ON((unsigned long)q->sbal[j] & 0xff);
+       }
+
+       /* fill in slib */
+       if (i > 0) {
+               prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1]
+                       : irq_ptr->output_qs[i - 1];
+               prev->slib->nsliba = (unsigned long)q->slib;
+       }
+
+       q->slib->sla = (unsigned long)q->sl;
+       q->slib->slsba = (unsigned long)&q->slsb.val[0];
+
+       /* fill in sl */
+       for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
+               q->sl->element[j].sbal = (unsigned long)q->sbal[j];
+
+       QDIO_DBF_TEXT2(0, setup, "sl-sb-b0");
+       QDIO_DBF_HEX2(0, setup, q->sl, sizeof(void *));
+       QDIO_DBF_HEX2(0, setup, &q->slsb, sizeof(void *));
+       QDIO_DBF_HEX2(0, setup, q->sbal, sizeof(void *));
+}
+
+static void setup_queues(struct qdio_irq *irq_ptr,
+                        struct qdio_initialize *qdio_init)
+{
+       char dbf_text[20];
+       struct qdio_q *q;
+       void **input_sbal_array = qdio_init->input_sbal_addr_array;
+       void **output_sbal_array = qdio_init->output_sbal_addr_array;
+       int i;
+
+       sprintf(dbf_text, "qfqs%4x", qdio_init->cdev->private->schid.sch_no);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+
+       for_each_input_queue(irq_ptr, q, i) {
+               sprintf(dbf_text, "in-q%4x", i);
+               setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
+
+               q->is_input_q = 1;
+               spin_lock_init(&q->u.in.lock);
+               setup_storage_lists(q, irq_ptr, input_sbal_array, dbf_text, i);
+               input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
+
+               if (is_thinint_irq(irq_ptr))
+                       tasklet_init(&q->tasklet, tiqdio_inbound_processing,
+                                    (unsigned long) q);
+               else
+                       tasklet_init(&q->tasklet, qdio_inbound_processing,
+                                    (unsigned long) q);
+       }
+
+       for_each_output_queue(irq_ptr, q, i) {
+               sprintf(dbf_text, "outq%4x", i);
+               setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i);
+
+               q->is_input_q = 0;
+               setup_storage_lists(q, irq_ptr, output_sbal_array,
+                                   dbf_text, i);
+               output_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
+
+               tasklet_init(&q->tasklet, qdio_outbound_processing,
+                            (unsigned long) q);
+               setup_timer(&q->u.out.timer, (void(*)(unsigned long))
+                           &qdio_outbound_timer, (unsigned long)q);
+       }
+}
+
+static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac)
+{
+       if (qdioac & AC1_SIGA_INPUT_NEEDED)
+               irq_ptr->siga_flag.input = 1;
+       if (qdioac & AC1_SIGA_OUTPUT_NEEDED)
+               irq_ptr->siga_flag.output = 1;
+       if (qdioac & AC1_SIGA_SYNC_NEEDED)
+               irq_ptr->siga_flag.sync = 1;
+       if (qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)
+               irq_ptr->siga_flag.no_sync_ti = 1;
+       if (qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)
+               irq_ptr->siga_flag.no_sync_out_pci = 1;
+
+       if (irq_ptr->siga_flag.no_sync_out_pci &&
+           irq_ptr->siga_flag.no_sync_ti)
+               irq_ptr->siga_flag.no_sync_out_ti = 1;
+}
+
+static void check_and_setup_qebsm(struct qdio_irq *irq_ptr,
+                                 unsigned char qdioac, unsigned long token)
+{
+       char dbf_text[15];
+
+       if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM))
+               goto no_qebsm;
+       if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) ||
+           (!(qdioac & AC1_SC_QEBSM_ENABLED)))
+               goto no_qebsm;
+
+       irq_ptr->sch_token = token;
+
+       QDIO_DBF_TEXT0(0, setup, "V=V:1");
+       sprintf(dbf_text, "%8lx", irq_ptr->sch_token);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       return;
+
+no_qebsm:
+       irq_ptr->sch_token = 0;
+       irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
+       QDIO_DBF_TEXT0(0, setup, "noV=V");
+}
+
+static int __get_ssqd_info(struct qdio_irq *irq_ptr)
+{
+       struct chsc_ssqd_area *ssqd;
+       int rc;
+
+       QDIO_DBF_TEXT0(0, setup, "getssqd");
+       ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
+       memset(ssqd, 0, PAGE_SIZE);
+
+       ssqd->request = (struct chsc_header) {
+               .length = 0x0010,
+               .code   = 0x0024,
+       };
+       ssqd->first_sch = irq_ptr->schid.sch_no;
+       ssqd->last_sch = irq_ptr->schid.sch_no;
+       ssqd->ssid = irq_ptr->schid.ssid;
+
+       if (chsc(ssqd))
+               return -EIO;
+       rc = chsc_error_from_response(ssqd->response.code);
+       if (rc)
+               return rc;
+
+       if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) ||
+           !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) ||
+           (ssqd->qdio_ssqd.sch != irq_ptr->schid.sch_no))
+               return -EINVAL;
+
+       memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
+              sizeof(struct qdio_ssqd_desc));
+       return 0;
+}
+
+void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
+{
+       unsigned char qdioac;
+       char dbf_text[15];
+       int rc;
+
+       rc = __get_ssqd_info(irq_ptr);
+       if (rc) {
+               QDIO_DBF_TEXT2(0, setup, "ssqdasig");
+               sprintf(dbf_text, "schno%x", irq_ptr->schid.sch_no);
+               QDIO_DBF_TEXT2(0, setup, dbf_text);
+               sprintf(dbf_text, "rc:%d", rc);
+               QDIO_DBF_TEXT2(0, setup, dbf_text);
+               /* all flags set, worst case */
+               qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED |
+                        AC1_SIGA_SYNC_NEEDED;
+       } else
+               qdioac = irq_ptr->ssqd_desc.qdioac1;
+
+       check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token);
+       process_ac_flags(irq_ptr, qdioac);
+
+       sprintf(dbf_text, "qdioac%2x", qdioac);
+       QDIO_DBF_TEXT2(0, setup, dbf_text);
+}
+
+void qdio_release_memory(struct qdio_irq *irq_ptr)
+{
+       struct qdio_q *q;
+       int i;
+
+       /*
+        * Must check queue array manually since irq_ptr->nr_input_queues /
+        * irq_ptr->nr_input_queues may not yet be set.
+        */
+       for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
+               q = irq_ptr->input_qs[i];
+               if (q) {
+                       free_page((unsigned long) q->slib);
+                       kmem_cache_free(qdio_q_cache, q);
+               }
+       }
+       for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
+               q = irq_ptr->output_qs[i];
+               if (q) {
+                       free_page((unsigned long) q->slib);
+                       kmem_cache_free(qdio_q_cache, q);
+               }
+       }
+       kfree(irq_ptr->qdr);
+       free_page(irq_ptr->chsc_page);
+       free_page((unsigned long) irq_ptr);
+}
+
+static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr,
+                                    struct qdio_q **irq_ptr_qs,
+                                    int i, int nr)
+{
+       irq_ptr->qdr->qdf0[i + nr].sliba =
+               (unsigned long)irq_ptr_qs[i]->slib;
+
+       irq_ptr->qdr->qdf0[i + nr].sla =
+               (unsigned long)irq_ptr_qs[i]->sl;
+
+       irq_ptr->qdr->qdf0[i + nr].slsba =
+               (unsigned long)&irq_ptr_qs[i]->slsb.val[0];
+
+       irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY;
+       irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY;
+       irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY;
+       irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY;
+}
+
+static void setup_qdr(struct qdio_irq *irq_ptr,
+                     struct qdio_initialize *qdio_init)
+{
+       int i;
+
+       irq_ptr->qdr->qfmt = qdio_init->q_format;
+       irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs;
+       irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs;
+       irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */
+       irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4;
+       irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib;
+       irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY;
+
+       for (i = 0; i < qdio_init->no_input_qs; i++)
+               __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0);
+
+       for (i = 0; i < qdio_init->no_output_qs; i++)
+               __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i,
+                                        qdio_init->no_input_qs);
+}
+
+static void setup_qib(struct qdio_irq *irq_ptr,
+                     struct qdio_initialize *init_data)
+{
+       if (qebsm_possible())
+               irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
+
+       irq_ptr->qib.qfmt = init_data->q_format;
+       if (init_data->no_input_qs)
+               irq_ptr->qib.isliba =
+                       (unsigned long)(irq_ptr->input_qs[0]->slib);
+       if (init_data->no_output_qs)
+               irq_ptr->qib.osliba =
+                       (unsigned long)(irq_ptr->output_qs[0]->slib);
+       memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8);
+}
+
+int qdio_setup_irq(struct qdio_initialize *init_data)
+{
+       struct ciw *ciw;
+       struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data;
+       int rc;
+
+       memset(irq_ptr, 0, ((char *)&irq_ptr->qdr) - ((char *)irq_ptr));
+       /* wipes qib.ac, required by ar7063 */
+       memset(irq_ptr->qdr, 0, sizeof(struct qdr));
+
+       irq_ptr->int_parm = init_data->int_parm;
+       irq_ptr->nr_input_qs = init_data->no_input_qs;
+       irq_ptr->nr_output_qs = init_data->no_output_qs;
+
+       irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
+       irq_ptr->cdev = init_data->cdev;
+       setup_queues(irq_ptr, init_data);
+
+       setup_qib(irq_ptr, init_data);
+       qdio_setup_thinint(irq_ptr);
+       set_impl_params(irq_ptr, init_data->qib_param_field_format,
+                       init_data->qib_param_field,
+                       init_data->input_slib_elements,
+                       init_data->output_slib_elements);
+
+       /* fill input and output descriptors */
+       setup_qdr(irq_ptr, init_data);
+
+       /* qdr, qib, sls, slsbs, slibs, sbales are filled now */
+
+       /* get qdio commands */
+       ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
+       if (!ciw) {
+               QDIO_DBF_TEXT2(1, setup, "no eq");
+               rc = -EINVAL;
+               goto out_err;
+       }
+       irq_ptr->equeue = *ciw;
+
+       ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
+       if (!ciw) {
+               QDIO_DBF_TEXT2(1, setup, "no aq");
+               rc = -EINVAL;
+               goto out_err;
+       }
+       irq_ptr->aqueue = *ciw;
+
+       /* set new interrupt handler */
+       irq_ptr->orig_handler = init_data->cdev->handler;
+       init_data->cdev->handler = qdio_int_handler;
+       return 0;
+out_err:
+       qdio_release_memory(irq_ptr);
+       return rc;
+}
+
+void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
+                               struct ccw_device *cdev)
+{
+       char s[80];
+
+       sprintf(s, "%s ", cdev->dev.bus_id);
+
+       switch (irq_ptr->qib.qfmt) {
+       case QDIO_QETH_QFMT:
+               sprintf(s + strlen(s), "OSADE ");
+               break;
+       case QDIO_ZFCP_QFMT:
+               sprintf(s + strlen(s), "ZFCP ");
+               break;
+       case QDIO_IQDIO_QFMT:
+               sprintf(s + strlen(s), "HiperSockets ");
+               break;
+       }
+       sprintf(s + strlen(s), "using: ");
+
+       if (!is_thinint_irq(irq_ptr))
+               sprintf(s + strlen(s), "no");
+       sprintf(s + strlen(s), "AdapterInterrupts ");
+       if (!(irq_ptr->sch_token != 0))
+               sprintf(s + strlen(s), "no");
+       sprintf(s + strlen(s), "QEBSM ");
+       if (!(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED))
+               sprintf(s + strlen(s), "no");
+       sprintf(s + strlen(s), "OutboundPCI ");
+       if (!css_general_characteristics.aif_tdd)
+               sprintf(s + strlen(s), "no");
+       sprintf(s + strlen(s), "TDD\n");
+       printk(KERN_INFO "qdio: %s", s);
+
+       memset(s, 0, sizeof(s));
+       sprintf(s, "%s SIGA required: ", cdev->dev.bus_id);
+       if (irq_ptr->siga_flag.input)
+               sprintf(s + strlen(s), "Read ");
+       if (irq_ptr->siga_flag.output)
+               sprintf(s + strlen(s), "Write ");
+       if (irq_ptr->siga_flag.sync)
+               sprintf(s + strlen(s), "Sync ");
+       if (!irq_ptr->siga_flag.no_sync_ti)
+               sprintf(s + strlen(s), "SyncAI ");
+       if (!irq_ptr->siga_flag.no_sync_out_ti)
+               sprintf(s + strlen(s), "SyncOutAI ");
+       if (!irq_ptr->siga_flag.no_sync_out_pci)
+               sprintf(s + strlen(s), "SyncOutPCI");
+       sprintf(s + strlen(s), "\n");
+       printk(KERN_INFO "qdio: %s", s);
+}
+
+int __init qdio_setup_init(void)
+{
+       char dbf_text[15];
+
+       qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
+                                        256, 0, NULL);
+       if (!qdio_q_cache)
+               return -ENOMEM;
+
+       /* Check for OSA/FCP thin interrupts (bit 67). */
+       sprintf(dbf_text, "thini%1x",
+               (css_general_characteristics.aif_osa) ? 1 : 0);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+
+       /* Check for QEBSM support in general (bit 58). */
+       sprintf(dbf_text, "cssQBS:%1x",
+               (qebsm_possible()) ? 1 : 0);
+       QDIO_DBF_TEXT0(0, setup, dbf_text);
+       return 0;
+}
+
+void __exit qdio_setup_exit(void)
+{
+       kmem_cache_destroy(qdio_q_cache);
+}
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
new file mode 100644 (file)
index 0000000..9291a77
--- /dev/null
@@ -0,0 +1,380 @@
+/*
+ * linux/drivers/s390/cio/thinint_qdio.c
+ *
+ * thin interrupt support for qdio
+ *
+ * Copyright 2000-2008 IBM Corp.
+ * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
+ *           Cornelia Huck <cornelia.huck@de.ibm.com>
+ *           Jan Glauber <jang@linux.vnet.ibm.com>
+ */
+#include <linux/io.h>
+#include <asm/atomic.h>
+#include <asm/debug.h>
+#include <asm/qdio.h>
+#include <asm/airq.h>
+#include <asm/isc.h>
+
+#include "cio.h"
+#include "ioasm.h"
+#include "qdio.h"
+#include "qdio_debug.h"
+#include "qdio_perf.h"
+
+/*
+ * Restriction: only 63 iqdio subchannels would have its own indicator,
+ * after that, subsequent subchannels share one indicator
+ */
+#define TIQDIO_NR_NONSHARED_IND                63
+#define TIQDIO_NR_INDICATORS           (TIQDIO_NR_NONSHARED_IND + 1)
+#define TIQDIO_SHARED_IND              63
+
+/* list of thin interrupt input queues */
+static LIST_HEAD(tiq_list);
+
+/* adapter local summary indicator */
+static unsigned char *tiqdio_alsi;
+
+/* device state change indicators */
+struct indicator_t {
+       u32 ind;        /* u32 because of compare-and-swap performance */
+       atomic_t count; /* use count, 0 or 1 for non-shared indicators */
+};
+static struct indicator_t *q_indicators;
+
+static void tiqdio_tasklet_fn(unsigned long data);
+static DECLARE_TASKLET(tiqdio_tasklet, tiqdio_tasklet_fn, 0);
+
+static int css_qdio_omit_svs;
+
+static inline unsigned long do_clear_global_summary(void)
+{
+       register unsigned long __fn asm("1") = 3;
+       register unsigned long __tmp asm("2");
+       register unsigned long __time asm("3");
+
+       asm volatile(
+               "       .insn   rre,0xb2650000,2,0"
+               : "+d" (__fn), "=d" (__tmp), "=d" (__time));
+       return __time;
+}
+
+/* returns addr for the device state change indicator */
+static u32 *get_indicator(void)
+{
+       int i;
+
+       for (i = 0; i < TIQDIO_NR_NONSHARED_IND; i++)
+               if (!atomic_read(&q_indicators[i].count)) {
+                       atomic_set(&q_indicators[i].count, 1);
+                       return &q_indicators[i].ind;
+               }
+
+       /* use the shared indicator */
+       atomic_inc(&q_indicators[TIQDIO_SHARED_IND].count);
+       return &q_indicators[TIQDIO_SHARED_IND].ind;
+}
+
+static void put_indicator(u32 *addr)
+{
+       int i;
+
+       if (!addr)
+               return;
+       i = ((unsigned long)addr - (unsigned long)q_indicators) /
+               sizeof(struct indicator_t);
+       atomic_dec(&q_indicators[i].count);
+}
+
+void tiqdio_add_input_queues(struct qdio_irq *irq_ptr)
+{
+       struct qdio_q *q;
+       int i;
+
+       /* No TDD facility? If we must use SIGA-s we can also omit SVS. */
+       if (!css_qdio_omit_svs && irq_ptr->siga_flag.sync)
+               css_qdio_omit_svs = 1;
+
+       for_each_input_queue(irq_ptr, q, i) {
+               list_add_rcu(&q->entry, &tiq_list);
+               synchronize_rcu();
+       }
+       xchg(irq_ptr->dsci, 1);
+       tasklet_schedule(&tiqdio_tasklet);
+}
+
+/*
+ * we cannot stop the tiqdio tasklet here since it is for all
+ * thinint qdio devices and it must run as long as there is a
+ * thinint device left
+ */
+void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr)
+{
+       struct qdio_q *q;
+       int i;
+
+       for_each_input_queue(irq_ptr, q, i) {
+               list_del_rcu(&q->entry);
+               synchronize_rcu();
+       }
+}
+
+static inline int tiqdio_inbound_q_done(struct qdio_q *q)
+{
+       unsigned char state;
+
+       if (!atomic_read(&q->nr_buf_used))
+               return 1;
+
+       qdio_siga_sync_q(q);
+       get_buf_state(q, q->first_to_check, &state);
+
+       if (state == SLSB_P_INPUT_PRIMED)
+               /* more work coming */
+               return 0;
+       return 1;
+}
+
+static inline int shared_ind(struct qdio_irq *irq_ptr)
+{
+       return irq_ptr->dsci == &q_indicators[TIQDIO_SHARED_IND].ind;
+}
+
+static void __tiqdio_inbound_processing(struct qdio_q *q)
+{
+       qdio_perf_stat_inc(&perf_stats.thinint_inbound);
+       qdio_sync_after_thinint(q);
+
+       /*
+        * Maybe we have work on our outbound queues... at least
+        * we have to check the PCI capable queues.
+        */
+       qdio_check_outbound_after_thinint(q);
+
+again:
+       if (!qdio_inbound_q_moved(q))
+               return;
+
+       qdio_kick_inbound_handler(q);
+
+       if (!tiqdio_inbound_q_done(q)) {
+               qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop);
+               goto again;
+       }
+
+       qdio_stop_polling(q);
+       /*
+        * We need to check again to not lose initiative after
+        * resetting the ACK state.
+        */
+       if (!tiqdio_inbound_q_done(q)) {
+               qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop2);
+               goto again;
+       }
+}
+
+void tiqdio_inbound_processing(unsigned long data)
+{
+       struct qdio_q *q = (struct qdio_q *)data;
+
+       __tiqdio_inbound_processing(q);
+}
+
+/* check for work on all inbound thinint queues */
+static void tiqdio_tasklet_fn(unsigned long data)
+{
+       struct qdio_q *q;
+
+       qdio_perf_stat_inc(&perf_stats.tasklet_thinint);
+again:
+
+       /* protect tiq_list entries, only changed in activate or shutdown */
+       rcu_read_lock();
+
+       list_for_each_entry_rcu(q, &tiq_list, entry)
+               /* only process queues from changed sets */
+               if (*q->irq_ptr->dsci) {
+
+                       /* only clear it if the indicator is non-shared */
+                       if (!shared_ind(q->irq_ptr))
+                               xchg(q->irq_ptr->dsci, 0);
+                       /*
+                        * don't call inbound processing directly since
+                        * that could starve other thinint queues
+                        */
+                       tasklet_schedule(&q->tasklet);
+               }
+
+       rcu_read_unlock();
+
+       /*
+        * if we used the shared indicator clear it now after all queues
+        * were processed
+        */
+       if (atomic_read(&q_indicators[TIQDIO_SHARED_IND].count)) {
+               xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 0);
+
+               /* prevent racing */
+               if (*tiqdio_alsi)
+                       xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 1);
+       }
+
+       /* check for more work */
+       if (*tiqdio_alsi) {
+               xchg(tiqdio_alsi, 0);
+               qdio_perf_stat_inc(&perf_stats.tasklet_thinint_loop);
+               goto again;
+       }
+}
+
+/**
+ * tiqdio_thinint_handler - thin interrupt handler for qdio
+ * @ind: pointer to adapter local summary indicator
+ * @drv_data: NULL
+ */
+static void tiqdio_thinint_handler(void *ind, void *drv_data)
+{
+       qdio_perf_stat_inc(&perf_stats.thin_int);
+
+       /*
+        * SVS only when needed: issue SVS to benefit from iqdio interrupt
+        * avoidance (SVS clears adapter interrupt suppression overwrite)
+        */
+       if (!css_qdio_omit_svs)
+               do_clear_global_summary();
+
+       /*
+        * reset local summary indicator (tiqdio_alsi) to stop adapter
+        * interrupts for now, the tasklet will clean all dsci's
+        */
+       xchg((u8 *)ind, 0);
+       tasklet_hi_schedule(&tiqdio_tasklet);
+}
+
+static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset)
+{
+       struct scssc_area *scssc_area;
+       char dbf_text[15];
+       void *ptr;
+       int rc;
+
+       scssc_area = (struct scssc_area *)irq_ptr->chsc_page;
+       memset(scssc_area, 0, PAGE_SIZE);
+
+       if (reset) {
+               scssc_area->summary_indicator_addr = 0;
+               scssc_area->subchannel_indicator_addr = 0;
+       } else {
+               scssc_area->summary_indicator_addr = virt_to_phys(tiqdio_alsi);
+               scssc_area->subchannel_indicator_addr =
+                       virt_to_phys(irq_ptr->dsci);
+       }
+
+       scssc_area->request = (struct chsc_header) {
+               .length = 0x0fe0,
+               .code   = 0x0021,
+       };
+       scssc_area->operation_code = 0;
+       scssc_area->ks = PAGE_DEFAULT_KEY;
+       scssc_area->kc = PAGE_DEFAULT_KEY;
+       scssc_area->isc = QDIO_AIRQ_ISC;
+       scssc_area->schid = irq_ptr->schid;
+
+       /* enable the time delay disablement facility */
+       if (css_general_characteristics.aif_tdd)
+               scssc_area->word_with_d_bit = 0x10000000;
+
+       rc = chsc(scssc_area);
+       if (rc)
+               return -EIO;
+
+       rc = chsc_error_from_response(scssc_area->response.code);
+       if (rc) {
+               sprintf(dbf_text, "sidR%4x", scssc_area->response.code);
+               QDIO_DBF_TEXT1(0, trace, dbf_text);
+               QDIO_DBF_TEXT1(0, setup, dbf_text);
+               ptr = &scssc_area->response;
+               QDIO_DBF_HEX2(1, setup, &ptr, QDIO_DBF_SETUP_LEN);
+               return rc;
+       }
+
+       QDIO_DBF_TEXT2(0, setup, "setscind");
+       QDIO_DBF_HEX2(0, setup, &scssc_area->summary_indicator_addr,
+                     sizeof(unsigned long));
+       QDIO_DBF_HEX2(0, setup, &scssc_area->subchannel_indicator_addr,
+                     sizeof(unsigned long));
+       return 0;
+}
+
+/* allocate non-shared indicators and shared indicator */
+int __init tiqdio_allocate_memory(void)
+{
+       q_indicators = kzalloc(sizeof(struct indicator_t) * TIQDIO_NR_INDICATORS,
+                            GFP_KERNEL);
+       if (!q_indicators)
+               return -ENOMEM;
+       return 0;
+}
+
+void tiqdio_free_memory(void)
+{
+       kfree(q_indicators);
+}
+
+int __init tiqdio_register_thinints(void)
+{
+       char dbf_text[20];
+
+       isc_register(QDIO_AIRQ_ISC);
+       tiqdio_alsi = s390_register_adapter_interrupt(&tiqdio_thinint_handler,
+                                                     NULL, QDIO_AIRQ_ISC);
+       if (IS_ERR(tiqdio_alsi)) {
+               sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_alsi));
+               QDIO_DBF_TEXT0(0, setup, dbf_text);
+               tiqdio_alsi = NULL;
+               isc_unregister(QDIO_AIRQ_ISC);
+               return -ENOMEM;
+       }
+       return 0;
+}
+
+int qdio_establish_thinint(struct qdio_irq *irq_ptr)
+{
+       if (!is_thinint_irq(irq_ptr))
+               return 0;
+
+       /* Check for aif time delay disablement. If installed,
+        * omit SVS even under LPAR
+        */
+       if (css_general_characteristics.aif_tdd)
+               css_qdio_omit_svs = 1;
+       return set_subchannel_ind(irq_ptr, 0);
+}
+
+void qdio_setup_thinint(struct qdio_irq *irq_ptr)
+{
+       if (!is_thinint_irq(irq_ptr))
+               return;
+       irq_ptr->dsci = get_indicator();
+       QDIO_DBF_HEX1(0, setup, &irq_ptr->dsci, sizeof(void *));
+}
+
+void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
+{
+       if (!is_thinint_irq(irq_ptr))
+               return;
+
+       /* reset adapter interrupt indicators */
+       put_indicator(irq_ptr->dsci);
+       set_subchannel_ind(irq_ptr, 1);
+}
+
+void __exit tiqdio_unregister_thinints(void)
+{
+       tasklet_disable(&tiqdio_tasklet);
+
+       if (tiqdio_alsi) {
+               s390_unregister_adapter_interrupt(tiqdio_alsi, QDIO_AIRQ_ISC);
+               isc_unregister(QDIO_AIRQ_ISC);
+       }
+}
index 699ac11debd84c49c0bbdbd21a2f70f9914deedc..1895dbb553cd1e338f7d681724be40f9894f10f5 100644 (file)
@@ -239,11 +239,6 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 /*not used unless the microcode gets patched*/
 #define QETH_PCI_TIMER_VALUE(card) 3
 
-#define QETH_MIN_INPUT_THRESHOLD 1
-#define QETH_MAX_INPUT_THRESHOLD 500
-#define QETH_MIN_OUTPUT_THRESHOLD 1
-#define QETH_MAX_OUTPUT_THRESHOLD 300
-
 /* priority queing */
 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 #define QETH_DEFAULT_QUEUE    2
@@ -811,17 +806,14 @@ int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
                        enum qeth_ipa_cmds, enum qeth_prot_versions);
 int qeth_query_setadapterparms(struct qeth_card *);
-int qeth_check_qdio_errors(struct qdio_buffer *, unsigned int,
-                      unsigned int, const char *);
+int qeth_check_qdio_errors(struct qdio_buffer *, unsigned int, const char *);
 void qeth_queue_input_buffer(struct qeth_card *, int);
 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
                struct qdio_buffer *, struct qdio_buffer_element **, int *,
                struct qeth_hdr **);
 void qeth_schedule_recovery(struct qeth_card *);
 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
-                       unsigned int, unsigned int,
-                       unsigned int, int, int,
-                       unsigned long);
+                       int, int, int, unsigned long);
 void qeth_clear_ipacmd_list(struct qeth_card *);
 int qeth_qdio_clear_card(struct qeth_card *, int);
 void qeth_clear_working_pool_list(struct qeth_card *);
index 0ac54dc638c21280f09dacf6c6a6ce2405111452..c3ad89e302bd1ae6695e0e377faf21b4a3fa4008 100644 (file)
@@ -2073,7 +2073,7 @@ static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
 static int qeth_qdio_activate(struct qeth_card *card)
 {
        QETH_DBF_TEXT(SETUP, 3, "qdioact");
-       return qdio_activate(CARD_DDEV(card), 0);
+       return qdio_activate(CARD_DDEV(card));
 }
 
 static int qeth_dm_act(struct qeth_card *card)
@@ -2349,16 +2349,11 @@ int qeth_init_qdio_queues(struct qeth_card *card)
        card->qdio.in_q->next_buf_to_init =
                card->qdio.in_buf_pool.buf_count - 1;
        rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
-                    card->qdio.in_buf_pool.buf_count - 1, NULL);
+                    card->qdio.in_buf_pool.buf_count - 1);
        if (rc) {
                QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
                return rc;
        }
-       rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
-       if (rc) {
-               QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
-               return rc;
-       }
        /* outbound queue */
        for (i = 0; i < card->qdio.no_out_queues; ++i) {
                memset(card->qdio.out_qs[i]->qdio_bufs, 0,
@@ -2559,9 +2554,9 @@ int qeth_query_setadapterparms(struct qeth_card *card)
 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
 
 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
-               unsigned int siga_error, const char *dbftext)
+               const char *dbftext)
 {
-       if (qdio_error || siga_error) {
+       if (qdio_error) {
                QETH_DBF_TEXT(TRACE, 2, dbftext);
                QETH_DBF_TEXT(QERR, 2, dbftext);
                QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
@@ -2569,7 +2564,6 @@ int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
                QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
                               buf->element[14].flags & 0xff);
                QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
-               QETH_DBF_TEXT_(QERR, 2, " serr=%X", siga_error);
                return 1;
        }
        return 0;
@@ -2622,9 +2616,8 @@ void qeth_queue_input_buffer(struct qeth_card *card, int index)
                        card->perf_stats.inbound_do_qdio_start_time =
                                qeth_get_micros();
                }
-               rc = do_QDIO(CARD_DDEV(card),
-                            QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
-                            0, queue->next_buf_to_init, count, NULL);
+               rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
+                            queue->next_buf_to_init, count);
                if (card->options.performance_stats)
                        card->perf_stats.inbound_do_qdio_time +=
                                qeth_get_micros() -
@@ -2643,14 +2636,13 @@ void qeth_queue_input_buffer(struct qeth_card *card, int index)
 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
 
 static int qeth_handle_send_error(struct qeth_card *card,
-               struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err,
-               unsigned int siga_err)
+               struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
 {
        int sbalf15 = buffer->buffer->element[15].flags & 0xff;
-       int cc = siga_err & 3;
+       int cc = qdio_err & 3;
 
        QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
-       qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
+       qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
        switch (cc) {
        case 0:
                if (qdio_err) {
@@ -2662,7 +2654,7 @@ static int qeth_handle_send_error(struct qeth_card *card,
                }
                return QETH_SEND_ERROR_NONE;
        case 2:
-               if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
+               if (qdio_err & QDIO_ERROR_SIGA_BUSY) {
                        QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
                        QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
                        return QETH_SEND_ERROR_KICK_IT;
@@ -2758,8 +2750,8 @@ static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
        return 0;
 }
 
-static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
-               int index, int count)
+static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
+                              int count)
 {
        struct qeth_qdio_out_buffer *buf;
        int rc;
@@ -2807,12 +2799,10 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
                        qeth_get_micros();
        }
        qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
-       if (under_int)
-               qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
        if (atomic_read(&queue->set_pci_flags_count))
                qdio_flags |= QDIO_FLAG_PCI_OUT;
        rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
-                    queue->queue_no, index, count, NULL);
+                    queue->queue_no, index, count);
        if (queue->card->options.performance_stats)
                queue->card->perf_stats.outbound_do_qdio_time +=
                        qeth_get_micros() -
@@ -2866,16 +2856,15 @@ static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
                                queue->card->perf_stats.bufs_sent_pack +=
                                        flush_cnt;
                        if (flush_cnt)
-                               qeth_flush_buffers(queue, 1, index, flush_cnt);
+                               qeth_flush_buffers(queue, index, flush_cnt);
                        atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
                }
        }
 }
 
-void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
-               unsigned int qdio_error, unsigned int siga_error,
-               unsigned int __queue, int first_element, int count,
-               unsigned long card_ptr)
+void qeth_qdio_output_handler(struct ccw_device *ccwdev,
+               unsigned int qdio_error, int __queue, int first_element,
+               int count, unsigned long card_ptr)
 {
        struct qeth_card *card        = (struct qeth_card *) card_ptr;
        struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
@@ -2883,15 +2872,12 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
        int i;
 
        QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
-       if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
-               if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
-                       QETH_DBF_TEXT(TRACE, 2, "achkcond");
-                       QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
-                       QETH_DBF_TEXT_(TRACE, 2, "%08x", status);
-                       netif_stop_queue(card->dev);
-                       qeth_schedule_recovery(card);
-                       return;
-               }
+       if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
+               QETH_DBF_TEXT(TRACE, 2, "achkcond");
+               QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
+               netif_stop_queue(card->dev);
+               qeth_schedule_recovery(card);
+               return;
        }
        if (card->options.performance_stats) {
                card->perf_stats.outbound_handler_cnt++;
@@ -2901,8 +2887,7 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
        for (i = first_element; i < (first_element + count); ++i) {
                buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
                /*we only handle the KICK_IT error by doing a recovery */
-               if (qeth_handle_send_error(card, buffer,
-                                          qdio_error, siga_error)
+               if (qeth_handle_send_error(card, buffer, qdio_error)
                                == QETH_SEND_ERROR_KICK_IT){
                        netif_stop_queue(card->dev);
                        qeth_schedule_recovery(card);
@@ -3164,11 +3149,11 @@ int qeth_do_send_packet_fast(struct qeth_card *card,
        atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
        if (ctx == NULL) {
                qeth_fill_buffer(queue, buffer, skb);
-               qeth_flush_buffers(queue, 0, index, 1);
+               qeth_flush_buffers(queue, index, 1);
        } else {
                flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
                WARN_ON(buffers_needed != flush_cnt);
-               qeth_flush_buffers(queue, 0, index, flush_cnt);
+               qeth_flush_buffers(queue, index, flush_cnt);
        }
        return 0;
 out:
@@ -3221,8 +3206,8 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
                                 * again */
                                if (atomic_read(&buffer->state) !=
                                                QETH_QDIO_BUF_EMPTY){
-                                       qeth_flush_buffers(queue, 0,
-                                               start_index, flush_count);
+                                       qeth_flush_buffers(queue, start_index,
+                                                          flush_count);
                                        atomic_set(&queue->state,
                                                QETH_OUT_Q_UNLOCKED);
                                        return -EBUSY;
@@ -3253,7 +3238,7 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
        flush_count += tmp;
 out:
        if (flush_count)
-               qeth_flush_buffers(queue, 0, start_index, flush_count);
+               qeth_flush_buffers(queue, start_index, flush_count);
        else if (!atomic_read(&queue->set_pci_flags_count))
                atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
        /*
@@ -3274,7 +3259,7 @@ out:
                if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
                        flush_count += qeth_flush_buffers_on_no_pci(queue);
                if (flush_count)
-                       qeth_flush_buffers(queue, 0, start_index, flush_count);
+                       qeth_flush_buffers(queue, start_index, flush_count);
        }
        /* at this point the queue is UNLOCKED again */
        if (queue->card->options.performance_stats && do_pack)
@@ -3686,10 +3671,6 @@ static int qeth_qdio_establish(struct qeth_card *card)
        init_data.q_format               = qeth_get_qdio_q_format(card);
        init_data.qib_param_field_format = 0;
        init_data.qib_param_field        = qib_param_field;
-       init_data.min_input_threshold    = QETH_MIN_INPUT_THRESHOLD;
-       init_data.max_input_threshold    = QETH_MAX_INPUT_THRESHOLD;
-       init_data.min_output_threshold   = QETH_MIN_OUTPUT_THRESHOLD;
-       init_data.max_output_threshold   = QETH_MAX_OUTPUT_THRESHOLD;
        init_data.no_input_qs            = 1;
        init_data.no_output_qs           = card->qdio.no_out_queues;
        init_data.input_handler          = card->discipline.input_handler;
@@ -3751,8 +3732,9 @@ static int qeth_core_driver_group(const char *buf, struct device *root_dev,
 
 int qeth_core_hardsetup_card(struct qeth_card *card)
 {
+       struct qdio_ssqd_desc *qdio_ssqd;
        int retries = 3;
-       int mpno;
+       int mpno = 0;
        int rc;
 
        QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
@@ -3784,7 +3766,10 @@ retry:
                QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
                return rc;
        }
-       mpno = qdio_get_ssqd_pct(CARD_DDEV(card));
+
+       qdio_ssqd = qdio_get_ssqd_desc(CARD_DDEV(card));
+       if (qdio_ssqd)
+               mpno = qdio_ssqd->pcnt;
        if (mpno)
                mpno = min(mpno - 1, QETH_MAX_PORTNO);
        if (card->info.portno > mpno) {
index f682f7b144806b0478e6bdfcb9c9825b5b94756d..3fbc3bdec0c5cfada6edccd973072f81ee2b97f7 100644 (file)
@@ -726,8 +726,7 @@ tx_drop:
 }
 
 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
-                       unsigned int status, unsigned int qdio_err,
-                       unsigned int siga_err, unsigned int queue,
+                       unsigned int qdio_err, unsigned int queue,
                        int first_element, int count, unsigned long card_ptr)
 {
        struct net_device *net_dev;
@@ -742,23 +741,20 @@ static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
                card->perf_stats.inbound_cnt++;
                card->perf_stats.inbound_start_time = qeth_get_micros();
        }
-       if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
-               if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
-                       QETH_DBF_TEXT(TRACE, 1, "qdinchk");
-                       QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
-                       QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
-                                       count);
-                       QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
-                       qeth_schedule_recovery(card);
-                       return;
-               }
+       if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
+               QETH_DBF_TEXT(TRACE, 1, "qdinchk");
+               QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
+               QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
+                               count);
+               QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
+               qeth_schedule_recovery(card);
+               return;
        }
        for (i = first_element; i < (first_element + count); ++i) {
                index = i % QDIO_MAX_BUFFERS_PER_Q;
                buffer = &card->qdio.in_q->bufs[index];
-               if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
-                     qeth_check_qdio_errors(buffer->buffer,
-                                            qdio_err, siga_err, "qinerr")))
+               if (!(qdio_err &&
+                     qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
                        qeth_l2_process_inbound_buffer(card, buffer, index);
                /* clear buffer and give back to hardware */
                qeth_put_buffer_pool_entry(card, buffer->pool_entry);
index 06deaee50f6d1ce00e72bc837d23d6f483be4e7e..22f64aa6dd1fc9e7699c457c0c4c5b2d06c25118 100644 (file)
@@ -2939,8 +2939,7 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
 }
 
 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
-               unsigned int status, unsigned int qdio_err,
-               unsigned int siga_err, unsigned int queue, int first_element,
+               unsigned int qdio_err, unsigned int queue, int first_element,
                int count, unsigned long card_ptr)
 {
        struct net_device *net_dev;
@@ -2955,23 +2954,21 @@ static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
                card->perf_stats.inbound_cnt++;
                card->perf_stats.inbound_start_time = qeth_get_micros();
        }
-       if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
-               if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
-                       QETH_DBF_TEXT(TRACE, 1, "qdinchk");
-                       QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
-                       QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
-                                       first_element, count);
-                       QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status);
-                       qeth_schedule_recovery(card);
-                       return;
-               }
+       if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
+               QETH_DBF_TEXT(TRACE, 1, "qdinchk");
+               QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
+               QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
+                               first_element, count);
+               QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
+               qeth_schedule_recovery(card);
+               return;
        }
        for (i = first_element; i < (first_element + count); ++i) {
                index = i % QDIO_MAX_BUFFERS_PER_Q;
                buffer = &card->qdio.in_q->bufs[index];
-               if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
+               if (!(qdio_err &&
                      qeth_check_qdio_errors(buffer->buffer,
-                                            qdio_err, siga_err, "qinerr")))
+                                            qdio_err, "qinerr")))
                        qeth_l3_process_inbound_buffer(card, buffer, index);
                /* clear buffer and give back to hardware */
                qeth_put_buffer_pool_entry(card, buffer->pool_entry);
index 36169c6944fd1d78b06161e66488b355d0d98ba3..fca48b88fc53b662be4e85dce9aaec8a3038e293 100644 (file)
@@ -297,15 +297,13 @@ void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
 /**
  * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
  * @adapter: adapter affected by this QDIO related event
- * @status: as passed by qdio module
  * @qdio_error: as passed by qdio module
- * @siga_error: as passed by qdio module
  * @sbal_index: first buffer with error condition, as passed by qdio module
  * @sbal_count: number of buffers affected, as passed by qdio module
  */
-void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
-                            unsigned int qdio_error, unsigned int siga_error,
-                            int sbal_index, int sbal_count)
+void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
+                            unsigned int qdio_error, int sbal_index,
+                            int sbal_count)
 {
        struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
        unsigned long flags;
@@ -313,9 +311,7 @@ void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
        spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
        memset(r, 0, sizeof(*r));
        strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
-       r->u.qdio.status = status;
        r->u.qdio.qdio_error = qdio_error;
-       r->u.qdio.siga_error = siga_error;
        r->u.qdio.sbal_index = sbal_index;
        r->u.qdio.sbal_count = sbal_count;
        debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
@@ -398,9 +394,7 @@ static void zfcp_hba_dbf_view_status(char **p,
 
 static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
 {
-       zfcp_dbf_out(p, "status", "0x%08x", r->status);
        zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
-       zfcp_dbf_out(p, "siga_error", "0x%08x", r->siga_error);
        zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
        zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
 }
index d04aea604974edb534239b167d068e672836a7c5..0ddb18449d11b190a602d628461d2f5f01dc564d 100644 (file)
@@ -139,9 +139,7 @@ struct zfcp_hba_dbf_record_status {
 } __attribute__ ((packed));
 
 struct zfcp_hba_dbf_record_qdio {
-       u32 status;
        u32 qdio_error;
-       u32 siga_error;
        u8 sbal_index;
        u8 sbal_count;
 } __attribute__ ((packed));
index 8065b2b224b7562be74eb85006eeae426094ae22..edfdb21591f32427ef670e4c1274ea3c28035060 100644 (file)
@@ -48,9 +48,8 @@ extern void zfcp_rec_dbf_event_action(u8, struct zfcp_erp_action *);
 extern void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *);
 extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *,
                                         struct fsf_status_read_buffer *);
-extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *,
-                                   unsigned int, unsigned int, unsigned int,
-                                   int, int);
+extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *, unsigned int, int,
+                                   int);
 extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *);
 extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *);
 extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *);
index 72e3094796d48235b451b0a64f949fb53a07c92d..d6dbd653fde9a46496de95b971d4338f9ec48035 100644 (file)
@@ -74,17 +74,15 @@ static void zfcp_qdio_zero_sbals(struct qdio_buffer *sbal[], int first, int cnt)
        }
 }
 
-static void zfcp_qdio_int_req(struct ccw_device *cdev, unsigned int status,
-                             unsigned int qdio_err, unsigned int siga_err,
-                             unsigned int queue_no, int first, int count,
+static void zfcp_qdio_int_req(struct ccw_device *cdev, unsigned int qdio_err,
+                             int queue_no, int first, int count,
                              unsigned long parm)
 {
        struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm;
        struct zfcp_qdio_queue *queue = &adapter->req_q;
 
-       if (unlikely(status & QDIO_STATUS_LOOK_FOR_ERROR)) {
-               zfcp_hba_dbf_event_qdio(adapter, status, qdio_err, siga_err,
-                                       first, count);
+       if (unlikely(qdio_err)) {
+               zfcp_hba_dbf_event_qdio(adapter, qdio_err, first, count);
                zfcp_qdio_handler_error(adapter, 140);
                return;
        }
@@ -129,8 +127,7 @@ static void zfcp_qdio_resp_put_back(struct zfcp_adapter *adapter, int processed)
 
        count = atomic_read(&queue->count) + processed;
 
-       retval = do_QDIO(cdev, QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
-                        0, start, count, NULL);
+       retval = do_QDIO(cdev, QDIO_FLAG_SYNC_INPUT, 0, start, count);
 
        if (unlikely(retval)) {
                atomic_set(&queue->count, count);
@@ -142,9 +139,8 @@ static void zfcp_qdio_resp_put_back(struct zfcp_adapter *adapter, int processed)
        }
 }
 
-static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int status,
-                              unsigned int qdio_err, unsigned int siga_err,
-                              unsigned int queue_no, int first, int count,
+static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err,
+                              int queue_no, int first, int count,
                               unsigned long parm)
 {
        struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm;
@@ -152,9 +148,8 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int status,
        volatile struct qdio_buffer_element *sbale;
        int sbal_idx, sbale_idx, sbal_no;
 
-       if (unlikely(status & QDIO_STATUS_LOOK_FOR_ERROR)) {
-               zfcp_hba_dbf_event_qdio(adapter, status, qdio_err, siga_err,
-                                       first, count);
+       if (unlikely(qdio_err)) {
+               zfcp_hba_dbf_event_qdio(adapter, qdio_err, first, count);
                zfcp_qdio_handler_error(adapter, 147);
                return;
        }
@@ -362,7 +357,7 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req)
        }
 
        retval = do_QDIO(adapter->ccw_device, QDIO_FLAG_SYNC_OUTPUT, 0, first,
-                        count, NULL);
+                        count);
        if (unlikely(retval)) {
                zfcp_qdio_zero_sbals(req_q->sbal, first, count);
                return retval;
@@ -400,10 +395,6 @@ int zfcp_qdio_allocate(struct zfcp_adapter *adapter)
        init_data->qib_param_field = NULL;
        init_data->input_slib_elements = NULL;
        init_data->output_slib_elements = NULL;
-       init_data->min_input_threshold = 1;
-       init_data->max_input_threshold = 5000;
-       init_data->min_output_threshold = 1;
-       init_data->max_output_threshold = 1000;
        init_data->no_input_qs = 1;
        init_data->no_output_qs = 1;
        init_data->input_handler = zfcp_qdio_int_resp;
@@ -436,9 +427,7 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter)
        atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
        spin_unlock(&req_q->lock);
 
-       while (qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR)
-                       == -EINPROGRESS)
-               ssleep(1);
+       qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR);
 
        /* cleanup used outbound sbals */
        count = atomic_read(&req_q->count);
@@ -473,7 +462,7 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter)
                return -EIO;
        }
 
-       if (qdio_activate(adapter->ccw_device, 0)) {
+       if (qdio_activate(adapter->ccw_device)) {
                dev_err(&adapter->ccw_device->dev,
                         "Activate of QDIO queues failed.\n");
                goto failed_qdio;
@@ -487,7 +476,7 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter)
        }
 
        if (do_QDIO(adapter->ccw_device, QDIO_FLAG_SYNC_INPUT, 0, 0,
-                    QDIO_MAX_BUFFERS_PER_Q, NULL)) {
+                    QDIO_MAX_BUFFERS_PER_Q)) {
                dev_err(&adapter->ccw_device->dev,
                         "Init of QDIO response queue failed.\n");
                goto failed_qdio;
@@ -501,9 +490,6 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter)
        return 0;
 
 failed_qdio:
-       while (qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR)
-                       == -EINPROGRESS)
-               ssleep(1);
-
+       qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR);
        return -EIO;
 }
index 11240342a0f4f54a6e7e66b3e03667400d4a9e35..6813772171f2d7b49826fb49d3f1333edbb88082 100644 (file)
 /*
  * linux/include/asm-s390/qdio.h
  *
- * Linux for S/390 QDIO base support, Hipersocket base support
- * version 2
- *
- * Copyright 2000,2002 IBM Corporation
+ * Copyright 2000,2008 IBM Corp.
  * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
+ *           Jan Glauber <jang@linux.vnet.ibm.com>
  *
  */
 #ifndef __QDIO_H__
 #define __QDIO_H__
 
-/* note, that most of the typedef's are from ingo. */
-
 #include <linux/interrupt.h>
 #include <asm/cio.h>
 #include <asm/ccwdev.h>
 
-#define QDIO_NAME "qdio "
-
-#ifndef __s390x__
-#define QDIO_32_BIT
-#endif /* __s390x__ */
-
-/**** CONSTANTS, that are relied on without using these symbols *****/
-#define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */
-/************************ END of CONSTANTS **************************/
-#define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/
-#define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */
-#define QDIO_MAX_ELEMENTS_PER_BUFFER 16
-#define SBAL_SIZE 256
-
-#define QDIO_QETH_QFMT 0
-#define QDIO_ZFCP_QFMT 1
-#define QDIO_IQDIO_QFMT 2
-#define QDIO_IQDIO_QFMT_ASYNCH 3
-
-struct qdio_buffer_element{
-       unsigned int flags;
-       unsigned int length;
-#ifdef QDIO_32_BIT
-       void *reserved;
-#endif /* QDIO_32_BIT */
-       void *addr;
-} __attribute__ ((packed,aligned(16)));
-
-struct qdio_buffer{
-       volatile struct qdio_buffer_element element[16];
-} __attribute__ ((packed,aligned(256)));
-
-
-/* params are: ccw_device, status, qdio_error, siga_error,
-   queue_number, first element processed, number of elements processed,
-   int_parm */
-typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int,
-                           unsigned int,unsigned int,int,int,unsigned long);
-
-
-#define QDIO_STATUS_INBOUND_INT 0x01
-#define QDIO_STATUS_OUTBOUND_INT 0x02
-#define QDIO_STATUS_LOOK_FOR_ERROR 0x04
-#define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08
-#define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10
-#define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20
-
-#define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10
-#define QDIO_SIGA_ERROR_B_BIT_SET 0x20
-
-/* for qdio_initialize */
-#define QDIO_INBOUND_0COPY_SBALS 0x01
-#define QDIO_OUTBOUND_0COPY_SBALS 0x02
-#define QDIO_USE_OUTBOUND_PCIS 0x04
-
-/* for qdio_cleanup */
-#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
-#define QDIO_FLAG_CLEANUP_USING_HALT 0x02
-
-struct qdio_initialize {
-       struct ccw_device *cdev;
-       unsigned char q_format;
-       unsigned char adapter_name[8];
-               unsigned int qib_param_field_format; /*adapter dependent*/
-       /* pointer to 128 bytes or NULL, if no param field */
-       unsigned char *qib_param_field; /* adapter dependent */
-       /* pointer to no_queues*128 words of data or NULL */
-       unsigned long *input_slib_elements;
-       unsigned long *output_slib_elements;
-       unsigned int min_input_threshold;
-       unsigned int max_input_threshold;
-       unsigned int min_output_threshold;
-       unsigned int max_output_threshold;
-       unsigned int no_input_qs;
-       unsigned int no_output_qs;
-       qdio_handler_t *input_handler;
-       qdio_handler_t *output_handler;
-       unsigned long int_parm;
-       unsigned long flags;
-       void **input_sbal_addr_array; /* addr of n*128 void ptrs */
-       void **output_sbal_addr_array; /* addr of n*128 void ptrs */
-};
-
-extern int qdio_initialize(struct qdio_initialize *init_data);
-extern int qdio_allocate(struct qdio_initialize *init_data);
-extern int qdio_establish(struct qdio_initialize *init_data);
-
-extern int qdio_activate(struct ccw_device *,int flags);
-
-#define QDIO_STATE_MUST_USE_OUTB_PCI   0x00000001
-#define QDIO_STATE_INACTIVE            0x00000002 /* after qdio_cleanup */
-#define QDIO_STATE_ESTABLISHED                 0x00000004 /* after qdio_initialize */
-#define QDIO_STATE_ACTIVE              0x00000008 /* after qdio_activate */
-#define QDIO_STATE_STOPPED             0x00000010 /* after queues went down */
-extern unsigned long qdio_get_status(int irq);
-
-
-#define QDIO_FLAG_SYNC_INPUT     0x01
-#define QDIO_FLAG_SYNC_OUTPUT    0x02
-#define QDIO_FLAG_UNDER_INTERRUPT 0x04
-#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on
-                                                    adapter interrupts */
-#define QDIO_FLAG_DONT_SIGA 0x10
-#define QDIO_FLAG_PCI_OUT   0x20
-
-extern int do_QDIO(struct ccw_device*, unsigned int flags, 
-                  unsigned int queue_number,
-                  unsigned int qidx,unsigned int count,
-                  struct qdio_buffer *buffers);
-
-extern int qdio_get_ssqd_pct(struct ccw_device*);
-extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
-                           unsigned int queue_number);
-
-extern int qdio_cleanup(struct ccw_device*, int how);
-extern int qdio_shutdown(struct ccw_device*, int how);
-extern int qdio_free(struct ccw_device*);
-
-unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag,
-                                 unsigned int queue_number,
-                                 unsigned int qidx);
-
-extern void qdio_init_scrubber(void);
-
+#define QDIO_MAX_QUEUES_PER_IRQ                32
+#define QDIO_MAX_BUFFERS_PER_Q         128
+#define QDIO_MAX_BUFFERS_MASK          (QDIO_MAX_BUFFERS_PER_Q - 1)
+#define QDIO_MAX_ELEMENTS_PER_BUFFER   16
+#define QDIO_SBAL_SIZE                 256
+
+#define QDIO_QETH_QFMT                 0
+#define QDIO_ZFCP_QFMT                 1
+#define QDIO_IQDIO_QFMT                        2
+
+/**
+ * struct qdesfmt0 - queue descriptor, format 0
+ * @sliba: storage list information block address
+ * @sla: storage list address
+ * @slsba: storage list state block address
+ * @akey: access key for DLIB
+ * @bkey: access key for SL
+ * @ckey: access key for SBALs
+ * @dkey: access key for SLSB
+ */
 struct qdesfmt0 {
-#ifdef QDIO_32_BIT
-       unsigned long res1;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long sliba;            /* storage-list-information-block
-                                          address */
-#ifdef QDIO_32_BIT
-       unsigned long res2;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long sla;              /* storage-list address */
-#ifdef QDIO_32_BIT
-       unsigned long res3;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long slsba;            /* storage-list-state-block address */
-       unsigned int  res4;             /* reserved */
-       unsigned int  akey  :  4;       /* access key for DLIB */
-       unsigned int  bkey  :  4;       /* access key for SL */
-       unsigned int  ckey  :  4;       /* access key for SBALs */
-       unsigned int  dkey  :  4;       /* access key for SLSB */
-       unsigned int  res5  : 16;       /* reserved */
+       u64 sliba;
+       u64 sla;
+       u64 slsba;
+       u32      : 32;
+       u32 akey : 4;
+       u32 bkey : 4;
+       u32 ckey : 4;
+       u32 dkey : 4;
+       u32      : 16;
 } __attribute__ ((packed));
 
-/*
- * Queue-Description record (QDR)
+/**
+ * struct qdr - queue description record (QDR)
+ * @qfmt: queue format
+ * @pfmt: implementation dependent parameter format
+ * @ac: adapter characteristics
+ * @iqdcnt: input queue descriptor count
+ * @oqdcnt: output queue descriptor count
+ * @iqdsz: inpout queue descriptor size
+ * @oqdsz: output queue descriptor size
+ * @qiba: queue information block address
+ * @qkey: queue information block key
+ * @qdf0: queue descriptions
  */
 struct qdr {
-       unsigned int  qfmt    :  8;     /* queue format */
-       unsigned int  pfmt    :  8;     /* impl. dep. parameter format */
-       unsigned int  res1    :  8;     /* reserved */
-       unsigned int  ac      :  8;     /* adapter characteristics */
-       unsigned int  res2    :  8;     /* reserved */
-       unsigned int  iqdcnt  :  8;     /* input-queue-descriptor count */
-       unsigned int  res3    :  8;     /* reserved */
-       unsigned int  oqdcnt  :  8;     /* output-queue-descriptor count */
-       unsigned int  res4    :  8;     /* reserved */
-       unsigned int  iqdsz   :  8;     /* input-queue-descriptor size */
-       unsigned int  res5    :  8;     /* reserved */
-       unsigned int  oqdsz   :  8;     /* output-queue-descriptor size */
-       unsigned int  res6[9];          /* reserved */
-#ifdef QDIO_32_BIT
-       unsigned long res7;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long qiba;             /* queue-information-block address */
-       unsigned int  res8;             /* reserved */
-       unsigned int  qkey    :  4;     /* queue-information-block key */
-       unsigned int  res9    : 28;     /* reserved */
-/*     union _qd {*/ /* why this? */
-               struct qdesfmt0 qdf0[126];
-/*     } qd;*/
-} __attribute__ ((packed,aligned(4096)));
-
-
-/*
- * queue information block (QIB)
- */
-#define QIB_AC_INBOUND_PCI_SUPPORTED   0x80
-#define QIB_AC_OUTBOUND_PCI_SUPPORTED  0x40
+       u32 qfmt   : 8;
+       u32 pfmt   : 8;
+       u32        : 8;
+       u32 ac     : 8;
+       u32        : 8;
+       u32 iqdcnt : 8;
+       u32        : 8;
+       u32 oqdcnt : 8;
+       u32        : 8;
+       u32 iqdsz  : 8;
+       u32        : 8;
+       u32 oqdsz  : 8;
+       /* private: */
+       u32 res[9];
+       /* public: */
+       u64 qiba;
+       u32        : 32;
+       u32 qkey   : 4;
+       u32        : 28;
+       struct qdesfmt0 qdf0[126];
+} __attribute__ ((packed, aligned(4096)));
+
+#define QIB_AC_OUTBOUND_PCI_SUPPORTED  0x40
 #define QIB_RFLAGS_ENABLE_QEBSM                0x80
 
+/**
+ * struct qib - queue information block (QIB)
+ * @qfmt: queue format
+ * @pfmt: implementation dependent parameter format
+ * @rflags: QEBSM
+ * @ac: adapter characteristics
+ * @isliba: absolute address of first input SLIB
+ * @osliba: absolute address of first output SLIB
+ * @ebcnam: adapter identifier in EBCDIC
+ * @parm: implementation dependent parameters
+ */
 struct qib {
-       unsigned int  qfmt    :  8;     /* queue format */
-       unsigned int  pfmt    :  8;     /* impl. dep. parameter format */
-       unsigned int  rflags  :  8;     /* QEBSM */
-       unsigned int  ac      :  8;     /* adapter characteristics */
-       unsigned int  res2;             /* reserved */
-#ifdef QDIO_32_BIT
-       unsigned long res3;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long isliba;           /* absolute address of 1st
-                                          input SLIB */
-#ifdef QDIO_32_BIT
-       unsigned long res4;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long osliba;           /* absolute address of 1st
-                                          output SLIB */
-       unsigned int  res5;             /* reserved */
-       unsigned int  res6;             /* reserved */
-       unsigned char ebcnam[8];        /* adapter identifier in EBCDIC */
-       unsigned char res7[88];         /* reserved */
-       unsigned char parm[QDIO_MAX_BUFFERS_PER_Q];
-                                       /* implementation dependent
-                                          parameters */
-} __attribute__ ((packed,aligned(256)));
-
-
-/*
- * storage-list-information block element (SLIBE)
+       u32 qfmt   : 8;
+       u32 pfmt   : 8;
+       u32 rflags : 8;
+       u32 ac     : 8;
+       u32        : 32;
+       u64 isliba;
+       u64 osliba;
+       u32        : 32;
+       u32        : 32;
+       u8 ebcnam[8];
+       /* private: */
+       u8 res[88];
+       /* public: */
+       u8 parm[QDIO_MAX_BUFFERS_PER_Q];
+} __attribute__ ((packed, aligned(256)));
+
+/**
+ * struct slibe - storage list information block element (SLIBE)
+ * @parms: implementation dependent parameters
  */
 struct slibe {
-#ifdef QDIO_32_BIT
-       unsigned long res;              /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long parms;            /* implementation dependent
-                                          parameters */
+       u64 parms;
 };
 
-/*
- * storage-list-information block (SLIB)
+/**
+ * struct slib - storage list information block (SLIB)
+ * @nsliba: next SLIB address (if any)
+ * @sla: SL address
+ * @slsba: SLSB address
+ * @slibe: SLIB elements
  */
 struct slib {
-#ifdef QDIO_32_BIT
-       unsigned long res1;             /* reserved */
-#endif /* QDIO_32_BIT */
-        unsigned long nsliba;           /* next SLIB address (if any) */
-#ifdef QDIO_32_BIT
-       unsigned long res2;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long sla;              /* SL address */
-#ifdef QDIO_32_BIT
-       unsigned long res3;             /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long slsba;            /* SLSB address */
-       unsigned char res4[1000];       /* reserved */
-       struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];    /* SLIB elements */
-} __attribute__ ((packed,aligned(2048)));
-
+       u64 nsliba;
+       u64 sla;
+       u64 slsba;
+       /* private: */
+       u8 res[1000];
+       /* public: */
+       struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
+} __attribute__ ((packed, aligned(2048)));
+
+/**
+ * struct sbal_flags - storage block address list flags
+ * @last: last entry
+ * @cont: contiguous storage
+ * @frag: fragmentation
+ */
 struct sbal_flags {
-       unsigned char res1  : 1;   /* reserved */
-       unsigned char last  : 1;   /* last entry */
-       unsigned char cont  : 1;   /* contiguous storage */
-       unsigned char res2  : 1;   /* reserved */
-       unsigned char frag  : 2;   /* fragmentation (s.below) */
-       unsigned char res3  : 2;   /* reserved */
+       u8      : 1;
+       u8 last : 1;
+       u8 cont : 1;
+       u8      : 1;
+       u8 frag : 2;
+       u8      : 2;
 } __attribute__ ((packed));
 
-#define SBAL_FLAGS_FIRST_FRAG       0x04000000UL
-#define SBAL_FLAGS_MIDDLE_FRAG      0x08000000UL
-#define SBAL_FLAGS_LAST_FRAG        0x0c000000UL
-#define SBAL_FLAGS_LAST_ENTRY       0x40000000UL
-#define SBAL_FLAGS_CONTIGUOUS       0x20000000UL
+#define SBAL_FLAGS_FIRST_FRAG          0x04000000UL
+#define SBAL_FLAGS_MIDDLE_FRAG         0x08000000UL
+#define SBAL_FLAGS_LAST_FRAG           0x0c000000UL
+#define SBAL_FLAGS_LAST_ENTRY          0x40000000UL
+#define SBAL_FLAGS_CONTIGUOUS          0x20000000UL
 
-#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
+#define SBAL_FLAGS0_DATA_CONTINUATION  0x20UL
 
 /* Awesome OpenFCP extensions */
-#define SBAL_FLAGS0_TYPE_STATUS       0x00UL
-#define SBAL_FLAGS0_TYPE_WRITE        0x08UL
-#define SBAL_FLAGS0_TYPE_READ         0x10UL
-#define SBAL_FLAGS0_TYPE_WRITE_READ   0x18UL
-#define SBAL_FLAGS0_MORE_SBALS       0x04UL
-#define SBAL_FLAGS0_COMMAND           0x02UL
-#define SBAL_FLAGS0_LAST_SBAL         0x00UL
-#define SBAL_FLAGS0_ONLY_SBAL         SBAL_FLAGS0_COMMAND
-#define SBAL_FLAGS0_MIDDLE_SBAL       SBAL_FLAGS0_MORE_SBALS
-#define SBAL_FLAGS0_FIRST_SBAL        SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
-/* Naught of interest beyond this point */
-
-#define SBAL_FLAGS0_PCI                0x40
+#define SBAL_FLAGS0_TYPE_STATUS                0x00UL
+#define SBAL_FLAGS0_TYPE_WRITE         0x08UL
+#define SBAL_FLAGS0_TYPE_READ          0x10UL
+#define SBAL_FLAGS0_TYPE_WRITE_READ    0x18UL
+#define SBAL_FLAGS0_MORE_SBALS         0x04UL
+#define SBAL_FLAGS0_COMMAND            0x02UL
+#define SBAL_FLAGS0_LAST_SBAL          0x00UL
+#define SBAL_FLAGS0_ONLY_SBAL          SBAL_FLAGS0_COMMAND
+#define SBAL_FLAGS0_MIDDLE_SBAL                SBAL_FLAGS0_MORE_SBALS
+#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
+#define SBAL_FLAGS0_PCI                        0x40
+
+/**
+ * struct sbal_sbalf_0 - sbal flags for sbale 0
+ * @pci: PCI indicator
+ * @cont: data continuation
+ * @sbtype: storage-block type (FCP)
+ */
 struct sbal_sbalf_0 {
-       unsigned char res1  : 1;   /* reserved */
-       unsigned char pci   : 1;   /* PCI indicator */
-       unsigned char cont  : 1;   /* data continuation */
-       unsigned char sbtype: 2;   /* storage-block type (OpenFCP) */
-       unsigned char res2  : 3;   /* reserved */
+       u8        : 1;
+       u8 pci    : 1;
+       u8 cont   : 1;
+       u8 sbtype : 2;
+       u8        : 3;
 } __attribute__ ((packed));
 
+/**
+ * struct sbal_sbalf_1 - sbal flags for sbale 1
+ * @key: storage key
+ */
 struct sbal_sbalf_1 {
-       unsigned char res1  : 4;   /* reserved */
-       unsigned char key   : 4;   /* storage key */
+       u8     : 4;
+       u8 key : 4;
 } __attribute__ ((packed));
 
+/**
+ * struct sbal_sbalf_14 - sbal flags for sbale 14
+ * @erridx: error index
+ */
 struct sbal_sbalf_14 {
-       unsigned char res1   : 4;  /* reserved */
-       unsigned char erridx : 4;  /* error index */
+       u8        : 4;
+       u8 erridx : 4;
 } __attribute__ ((packed));
 
+/**
+ * struct sbal_sbalf_15 - sbal flags for sbale 15
+ * @reason: reason for error state
+ */
 struct sbal_sbalf_15 {
-       unsigned char reason;      /* reserved */
+       u8 reason;
 } __attribute__ ((packed));
 
+/**
+ * union sbal_sbalf - storage block address list flags
+ * @i0: sbalf0
+ * @i1: sbalf1
+ * @i14: sbalf14
+ * @i15: sblaf15
+ * @value: raw value
+ */
 union sbal_sbalf {
        struct sbal_sbalf_0  i0;
        struct sbal_sbalf_1  i1;
        struct sbal_sbalf_14 i14;
        struct sbal_sbalf_15 i15;
-       unsigned char value;
+       u8 value;
 };
 
-struct sbal_element {
-       union {
-               struct sbal_flags  bits;       /* flags */
-               unsigned char value;
-       } flags;
-       unsigned int  res1  : 16;   /* reserved */
-       union sbal_sbalf  sbalf;       /* SBAL flags */
-       unsigned int  res2  : 16;  /* reserved */
-       unsigned int  count : 16;  /* data count */
-#ifdef QDIO_32_BIT
-       unsigned long res3;        /* reserved */
-#endif /* QDIO_32_BIT */
-       unsigned long addr;        /* absolute data address */
-} __attribute__ ((packed,aligned(16)));
+/**
+ * struct qdio_buffer_element - SBAL entry
+ * @flags: flags
+ * @length: length
+ * @addr: address
+*/
+struct qdio_buffer_element {
+       u32 flags;
+       u32 length;
+#ifdef CONFIG_32BIT
+       /* private: */
+       void *reserved;
+       /* public: */
+#endif
+       void *addr;
+} __attribute__ ((packed, aligned(16)));
 
-/*
- * strorage-block access-list (SBAL)
+/**
+ * struct qdio_buffer - storage block address list (SBAL)
+ * @element: SBAL entries
  */
-struct sbal {
-       struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
-} __attribute__ ((packed,aligned(256)));
+struct qdio_buffer {
+       struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
+} __attribute__ ((packed, aligned(256)));
 
-/*
- * storage-list (SL)
+/**
+ * struct sl_element - storage list entry
+ * @sbal: absolute SBAL address
  */
 struct sl_element {
-#ifdef QDIO_32_BIT
-        unsigned long res;     /* reserved */
-#endif /* QDIO_32_BIT */
-        unsigned long sbal;    /* absolute SBAL address */
+#ifdef CONFIG_32BIT
+       /* private: */
+       unsigned long reserved;
+       /* public: */
+#endif
+       unsigned long sbal;
 } __attribute__ ((packed));
 
+/**
+ * struct sl - storage list (SL)
+ * @element: SL entries
+ */
 struct sl {
        struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
-} __attribute__ ((packed,aligned(1024)));
+} __attribute__ ((packed, aligned(1024)));
 
-/*
- * storage-list-state block (SLSB)
+/**
+ * struct slsb - storage list state block (SLSB)
+ * @val: state per buffer
  */
-struct slsb_flags {
-       unsigned char owner  : 2;   /* SBAL owner */
-       unsigned char type   : 1;   /* buffer type */
-       unsigned char state  : 5;   /* processing state */
+struct slsb {
+       u8 val[QDIO_MAX_BUFFERS_PER_Q];
+} __attribute__ ((packed, aligned(256)));
+
+struct qdio_ssqd_desc {
+       u8 flags;
+       u8:8;
+       u16 sch;
+       u8 qfmt;
+       u8 parm;
+       u8 qdioac1;
+       u8 sch_class;
+       u8 pcnt;
+       u8 icnt;
+       u8:8;
+       u8 ocnt;
+       u8:8;
+       u8 mbccnt;
+       u16 qdioac2;
+       u64 sch_token;
+       u64:64;
 } __attribute__ ((packed));
 
+/* params are: ccw_device, qdio_error, queue_number,
+   first element processed, number of elements processed, int_parm */
+typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
+                           int, int, unsigned long);
 
-struct slsb {
-       union {
-               unsigned char val[QDIO_MAX_BUFFERS_PER_Q];
-               struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q];
-       } acc;
-} __attribute__ ((packed,aligned(256)));
+/* qdio errors reported to the upper-layer program */
+#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION       0x10
+#define QDIO_ERROR_SIGA_BUSY                   0x20
+#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION    0x40
+#define QDIO_ERROR_SLSB_STATE                  0x80
 
-/*
- * SLSB values
+/* for qdio_initialize */
+#define QDIO_INBOUND_0COPY_SBALS               0x01
+#define QDIO_OUTBOUND_0COPY_SBALS              0x02
+#define QDIO_USE_OUTBOUND_PCIS                 0x04
+
+/* for qdio_cleanup */
+#define QDIO_FLAG_CLEANUP_USING_CLEAR          0x01
+#define QDIO_FLAG_CLEANUP_USING_HALT           0x02
+
+/**
+ * struct qdio_initialize - qdio initalization data
+ * @cdev: associated ccw device
+ * @q_format: queue format
+ * @adapter_name: name for the adapter
+ * @qib_param_field_format: format for qib_parm_field
+ * @qib_param_field: pointer to 128 bytes or NULL, if no param field
+ * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL
+ * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL
+ * @no_input_qs: number of input queues
+ * @no_output_qs: number of output queues
+ * @input_handler: handler to be called for input queues
+ * @output_handler: handler to be called for output queues
+ * @int_parm: interruption parameter
+ * @flags: initialization flags
+ * @input_sbal_addr_array:  address of no_input_qs * 128 pointers
+ * @output_sbal_addr_array: address of no_output_qs * 128 pointers
  */
-#define SLSB_OWNER_PROG              1
-#define SLSB_OWNER_CU                2
-
-#define SLSB_TYPE_INPUT              0
-#define SLSB_TYPE_OUTPUT             1
-
-#define SLSB_STATE_NOT_INIT          0
-#define SLSB_STATE_EMPTY             1
-#define SLSB_STATE_PRIMED            2
-#define SLSB_STATE_HALTED          0xe
-#define SLSB_STATE_ERROR           0xf
-
-#define SLSB_P_INPUT_NOT_INIT     0x80
-#define SLSB_P_INPUT_PROCESSING          0x81
-#define SLSB_CU_INPUT_EMPTY       0x41
-#define SLSB_P_INPUT_PRIMED       0x82
-#define SLSB_P_INPUT_HALTED       0x8E
-#define SLSB_P_INPUT_ERROR        0x8F
-
-#define SLSB_P_OUTPUT_NOT_INIT    0xA0
-#define SLSB_P_OUTPUT_EMPTY       0xA1
-#define SLSB_CU_OUTPUT_PRIMED     0x62
-#define SLSB_P_OUTPUT_HALTED      0xAE
-#define SLSB_P_OUTPUT_ERROR       0xAF
-
-#define SLSB_ERROR_DURING_LOOKUP  0xFF
+struct qdio_initialize {
+       struct ccw_device *cdev;
+       unsigned char q_format;
+       unsigned char adapter_name[8];
+       unsigned int qib_param_field_format;
+       unsigned char *qib_param_field;
+       unsigned long *input_slib_elements;
+       unsigned long *output_slib_elements;
+       unsigned int no_input_qs;
+       unsigned int no_output_qs;
+       qdio_handler_t *input_handler;
+       qdio_handler_t *output_handler;
+       unsigned long int_parm;
+       unsigned long flags;
+       void **input_sbal_addr_array;
+       void **output_sbal_addr_array;
+};
+
+#define QDIO_STATE_INACTIVE            0x00000002 /* after qdio_cleanup */
+#define QDIO_STATE_ESTABLISHED         0x00000004 /* after qdio_establish */
+#define QDIO_STATE_ACTIVE              0x00000008 /* after qdio_activate */
+#define QDIO_STATE_STOPPED             0x00000010 /* after queues went down */
+
+#define QDIO_FLAG_SYNC_INPUT           0x01
+#define QDIO_FLAG_SYNC_OUTPUT          0x02
+#define QDIO_FLAG_PCI_OUT              0x10
+
+extern int qdio_initialize(struct qdio_initialize *init_data);
+extern int qdio_allocate(struct qdio_initialize *init_data);
+extern int qdio_establish(struct qdio_initialize *init_data);
+extern int qdio_activate(struct ccw_device *);
+
+extern int do_QDIO(struct ccw_device*, unsigned int flags,
+                  int q_nr, int qidx, int count);
+extern int qdio_cleanup(struct ccw_device*, int how);
+extern int qdio_shutdown(struct ccw_device*, int how);
+extern int qdio_free(struct ccw_device *);
+extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev);
 
 #endif /* __QDIO_H__ */
index f09ee3f729778dee8be898577303dbe4b988abc7..4ba14e463e838ad6366673eceea62377ccb96c99 100644 (file)
@@ -65,6 +65,7 @@ extern unsigned long machine_flags;
 
 #define MACHINE_FLAG_VM                (1UL << 0)
 #define MACHINE_FLAG_IEEE      (1UL << 1)
+#define MACHINE_FLAG_P390      (1UL << 2)
 #define MACHINE_FLAG_CSP       (1UL << 3)
 #define MACHINE_FLAG_MVPG      (1UL << 4)
 #define MACHINE_FLAG_DIAG44    (1UL << 5)
@@ -77,7 +78,6 @@ extern unsigned long machine_flags;
 
 #define MACHINE_IS_VM          (machine_flags & MACHINE_FLAG_VM)
 #define MACHINE_IS_KVM         (machine_flags & MACHINE_FLAG_KVM)
-#define MACHINE_IS_P390                (machine_flags & MACHINE_FLAG_P390)
 #define MACHINE_HAS_DIAG9C     (machine_flags & MACHINE_FLAG_DIAG9C)
 
 #ifndef __s390x__