[linux-block.git] / drivers / s390 / cio / qdio_setup.c

/*
 * 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;

	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;

		q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
		if (!q->slib) {
			kmem_cache_free(qdio_q_cache, q);
			return -ENOMEM;
		}
		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)
{
	struct slib *slib = q->slib;

	/* queue must be cleared for qdio_establish */
	memset(q, 0, sizeof(*q));
	memset(slib, 0, PAGE_SIZE);
	q->slib = slib;
	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, int i)
{
	struct qdio_q *prev;
	int j;

	DBF_HEX(&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++;
		BUG_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];
}

static void setup_queues(struct qdio_irq *irq_ptr,
			 struct qdio_initialize *qdio_init)
{
	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;

	for_each_input_queue(irq_ptr, q, i) {
		DBF_EVENT("in-q:%1d", i);
		setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);

		q->is_input_q = 1;
		setup_storage_lists(q, irq_ptr, input_sbal_array, 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) {
		DBF_EVENT("outq:%1d", 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, 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)
{
	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;

	DBF_EVENT("V=V:1");
	DBF_EVENT("%8lx", irq_ptr->sch_token);
	return;

no_qebsm:
	irq_ptr->sch_token = 0;
	irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
	DBF_EVENT("noV=V");
}

/*
 * If there is a qdio_irq we use the chsc_page and store the information
 * in the qdio_irq, otherwise we copy it to the specified structure.
 */
int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
			struct subchannel_id *schid,
			struct qdio_ssqd_desc *data)
{
	struct chsc_ssqd_area *ssqd;
	int rc;

	DBF_EVENT("getssqd:%4x", schid->sch_no);
	if (irq_ptr != NULL)
		ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
	else
		ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL);
	memset(ssqd, 0, PAGE_SIZE);

	ssqd->request = (struct chsc_header) {
		.length = 0x0010,
		.code	= 0x0024,
	};
	ssqd->first_sch = schid->sch_no;
	ssqd->last_sch = schid->sch_no;
	ssqd->ssid = 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 != schid->sch_no))
		return -EINVAL;

	if (irq_ptr != NULL)
		memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
		       sizeof(struct qdio_ssqd_desc));
	else {
		memcpy(data, &ssqd->qdio_ssqd,
		       sizeof(struct qdio_ssqd_desc));
		free_page((unsigned long)ssqd);
	}
	return 0;
}

void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
{
	unsigned char qdioac;
	int rc;

	rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL);
	if (rc) {
		DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no);
		DBF_ERROR("rc:%x", rc);
		/* 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);
	DBF_EVENT("qdioac:%4x", qdioac);
}

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);
		}
	}
	free_page((unsigned long) 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 >> 4;
	irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4;
	irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4;
	irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4;
}

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 >> 4;

	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->qib, 0, sizeof(irq_ptr->qib));
	memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag));
	memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw));
	memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc));
	memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));

	irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL;
	irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0;

	/* 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) {
		DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no);
		rc = -EINVAL;
		goto out_err;
	}
	irq_ptr->equeue = *ciw;

	ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
	if (!ciw) {
		DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no);
		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];

	snprintf(s, 80, "qdio: %s %s on SC %x using "
		 "AI:%d QEBSM:%d PCI:%d TDD:%d SIGA:%s%s%s%s%s%s\n",
		 dev_name(&cdev->dev),
		 (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" :
			((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"),
		 irq_ptr->schid.sch_no,
		 is_thinint_irq(irq_ptr),
		 (irq_ptr->sch_token) ? 1 : 0,
		 (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0,
		 css_general_characteristics.aif_tdd,
		 (irq_ptr->siga_flag.input) ? "R" : " ",
		 (irq_ptr->siga_flag.output) ? "W" : " ",
		 (irq_ptr->siga_flag.sync) ? "S" : " ",
		 (!irq_ptr->siga_flag.no_sync_ti) ? "A" : " ",
		 (!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " ",
		 (!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " ");
	printk(KERN_INFO "%s", s);
}

int __init qdio_setup_init(void)
{
	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). */
	DBF_EVENT("thinint:%1d",
		  (css_general_characteristics.aif_osa) ? 1 : 0);

	/* Check for QEBSM support in general (bit 58). */
	DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0);
	return 0;
}

void qdio_setup_exit(void)
{
	kmem_cache_destroy(qdio_q_cache);
}
Commit	Line	Data
779e6e1c JG	1	/*
	2	* driver/s390/cio/qdio_setup.c
	3	*
	4	* qdio queue initialization
	5	*
	6	* Copyright (C) IBM Corp. 2008
	7	* Author(s): Jan Glauber <jang@linux.vnet.ibm.com>
	8	*/
	9	#include <linux/kernel.h>
	10	#include <linux/slab.h>
	11	#include <asm/qdio.h>
	12
	13	#include "cio.h"
	14	#include "css.h"
	15	#include "device.h"
	16	#include "ioasm.h"
	17	#include "chsc.h"
	18	#include "qdio.h"
	19	#include "qdio_debug.h"
	20
	21	static struct kmem_cache *qdio_q_cache;
	22
	23	/*
	24	* qebsm is only available under 64bit but the adapter sets the feature
	25	* flag anyway, so we manually override it.
	26	*/
	27	static inline int qebsm_possible(void)
	28	{
	29	#ifdef CONFIG_64BIT
	30	return css_general_characteristics.qebsm;
	31	#endif
	32	return 0;
	33	}
	34
	35	/*
	36	* qib_param_field: pointer to 128 bytes or NULL, if no param field
	37	* nr_input_qs: pointer to nr_queues*128 words of data or NULL
	38	*/
	39	static void set_impl_params(struct qdio_irq *irq_ptr,
	40	unsigned int qib_param_field_format,
	41	unsigned char *qib_param_field,
	42	unsigned long *input_slib_elements,
	43	unsigned long *output_slib_elements)
	44	{
	45	struct qdio_q *q;
	46	int i, j;
	47
	48	if (!irq_ptr)
	49	return;
	50
779e6e1c JG	51	irq_ptr->qib.pfmt = qib_param_field_format;
	52	if (qib_param_field)
	53	memcpy(irq_ptr->qib.parm, qib_param_field,
	54	QDIO_MAX_BUFFERS_PER_Q);
	55
	56	if (!input_slib_elements)
	57	goto output;
	58
	59	for_each_input_queue(irq_ptr, q, i) {
	60	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
	61	q->slib->slibe[j].parms =
	62	input_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j];
	63	}
	64	output:
	65	if (!output_slib_elements)
	66	return;
	67
	68	for_each_output_queue(irq_ptr, q, i) {
	69	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
	70	q->slib->slibe[j].parms =
	71	output_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j];
	72	}
	73	}
	74
	75	static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
	76	{
	77	struct qdio_q *q;
	78	int i;
	79
	80	for (i = 0; i < nr_queues; i++) {
	81	q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
	82	if (!q)
	83	return -ENOMEM;
779e6e1c JG	84
	85	q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
	86	if (!q->slib) {
	87	kmem_cache_free(qdio_q_cache, q);
	88	return -ENOMEM;
	89	}
779e6e1c JG	90	irq_ptr_qs[i] = q;
	91	}
	92	return 0;
	93	}
	94
	95	int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs)
	96	{
	97	int rc;
	98
	99	rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs);
	100	if (rc)
	101	return rc;
	102	rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs);
	103	return rc;
	104	}
	105
	106	static void setup_queues_misc(struct qdio_q q, struct qdio_irq irq_ptr,
	107	qdio_handler_t *handler, int i)
	108	{
5382fe11	109	struct slib *slib = q->slib;
779e6e1c	110
5382fe11 JG	111	/* queue must be cleared for qdio_establish */
	112	memset(q, 0, sizeof(*q));
	113	memset(slib, 0, PAGE_SIZE);
	114	q->slib = slib;
779e6e1c JG	115	q->irq_ptr = irq_ptr;
	116	q->mask = 1 << (31 - i);
	117	q->nr = i;
	118	q->handler = handler;
	119	}
	120
	121	static void setup_storage_lists(struct qdio_q q, struct qdio_irq irq_ptr,
22f99347	122	void **sbals_array, int i)
779e6e1c JG	123	{
	124	struct qdio_q *prev;
	125	int j;
	126
22f99347	127	DBF_HEX(&q, sizeof(void *));
779e6e1c JG	128	q->sl = (struct sl )((char )q->slib + PAGE_SIZE / 2);
	129
	130	/* fill in sbal */
	131	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) {
	132	q->sbal[j] = *sbals_array++;
7883097f	133	BUG_ON((unsigned long)q->sbal[j] & 0xff);
779e6e1c JG	134	}
	135
	136	/* fill in slib */
	137	if (i > 0) {
	138	prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1]
	139	: irq_ptr->output_qs[i - 1];
	140	prev->slib->nsliba = (unsigned long)q->slib;
	141	}
	142
	143	q->slib->sla = (unsigned long)q->sl;
	144	q->slib->slsba = (unsigned long)&q->slsb.val[0];
	145
	146	/* fill in sl */
	147	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
	148	q->sl->element[j].sbal = (unsigned long)q->sbal[j];
779e6e1c JG	149	}
	150
	151	static void setup_queues(struct qdio_irq *irq_ptr,
	152	struct qdio_initialize *qdio_init)
	153	{
779e6e1c JG	154	struct qdio_q *q;
	155	void **input_sbal_array = qdio_init->input_sbal_addr_array;
	156	void **output_sbal_array = qdio_init->output_sbal_addr_array;
	157	int i;
	158
779e6e1c	159	for_each_input_queue(irq_ptr, q, i) {
22f99347	160	DBF_EVENT("in-q:%1d", i);
779e6e1c JG	161	setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
	162
	163	q->is_input_q = 1;
22f99347	164	setup_storage_lists(q, irq_ptr, input_sbal_array, i);
779e6e1c JG	165	input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
	166
	167	if (is_thinint_irq(irq_ptr))
	168	tasklet_init(&q->tasklet, tiqdio_inbound_processing,
	169	(unsigned long) q);
	170	else
	171	tasklet_init(&q->tasklet, qdio_inbound_processing,
	172	(unsigned long) q);
	173	}
	174
	175	for_each_output_queue(irq_ptr, q, i) {
22f99347	176	DBF_EVENT("outq:%1d", i);
779e6e1c JG	177	setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i);
	178
	179	q->is_input_q = 0;
22f99347	180	setup_storage_lists(q, irq_ptr, output_sbal_array, i);
779e6e1c JG	181	output_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
	182
	183	tasklet_init(&q->tasklet, qdio_outbound_processing,
	184	(unsigned long) q);
	185	setup_timer(&q->u.out.timer, (void(*)(unsigned long))
	186	&qdio_outbound_timer, (unsigned long)q);
	187	}
	188	}
	189
	190	static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac)
	191	{
	192	if (qdioac & AC1_SIGA_INPUT_NEEDED)
	193	irq_ptr->siga_flag.input = 1;
	194	if (qdioac & AC1_SIGA_OUTPUT_NEEDED)
	195	irq_ptr->siga_flag.output = 1;
	196	if (qdioac & AC1_SIGA_SYNC_NEEDED)
	197	irq_ptr->siga_flag.sync = 1;
	198	if (qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)
	199	irq_ptr->siga_flag.no_sync_ti = 1;
	200	if (qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)
	201	irq_ptr->siga_flag.no_sync_out_pci = 1;
	202
	203	if (irq_ptr->siga_flag.no_sync_out_pci &&
	204	irq_ptr->siga_flag.no_sync_ti)
	205	irq_ptr->siga_flag.no_sync_out_ti = 1;
	206	}
	207
	208	static void check_and_setup_qebsm(struct qdio_irq *irq_ptr,
	209	unsigned char qdioac, unsigned long token)
	210	{
779e6e1c JG	211	if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM))
	212	goto no_qebsm;
	213	if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) \|\|
	214	(!(qdioac & AC1_SC_QEBSM_ENABLED)))
	215	goto no_qebsm;
	216
	217	irq_ptr->sch_token = token;
	218
22f99347 JG	219	DBF_EVENT("V=V:1");
22f99347 JG	220	DBF_EVENT("%8lx", irq_ptr->sch_token);
779e6e1c JG	221	return;
	222
	223	no_qebsm:
	224	irq_ptr->sch_token = 0;
	225	irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
22f99347	226	DBF_EVENT("noV=V");
779e6e1c JG	227	}
779e6e1c JG	228
bbd50e17 JG	229	/*
	230	* If there is a qdio_irq we use the chsc_page and store the information
	231	* in the qdio_irq, otherwise we copy it to the specified structure.
	232	*/
	233	int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
	234	struct subchannel_id *schid,
	235	struct qdio_ssqd_desc *data)
779e6e1c JG	236	{
	237	struct chsc_ssqd_area *ssqd;
	238	int rc;
	239
22f99347	240	DBF_EVENT("getssqd:%4x", schid->sch_no);
bbd50e17 JG	241	if (irq_ptr != NULL)
	242	ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
	243	else
	244	ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL);
779e6e1c JG	245	memset(ssqd, 0, PAGE_SIZE);
	246
	247	ssqd->request = (struct chsc_header) {
	248	.length = 0x0010,
	249	.code = 0x0024,
	250	};
bbd50e17 JG	251	ssqd->first_sch = schid->sch_no;
	252	ssqd->last_sch = schid->sch_no;
	253	ssqd->ssid = schid->ssid;
779e6e1c JG	254
	255	if (chsc(ssqd))
	256	return -EIO;
	257	rc = chsc_error_from_response(ssqd->response.code);
	258	if (rc)
	259	return rc;
	260
	261	if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) \|\|
	262	!(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) \|\|
bbd50e17	263	(ssqd->qdio_ssqd.sch != schid->sch_no))
779e6e1c JG	264	return -EINVAL;
779e6e1c JG	265
bbd50e17 JG	266	if (irq_ptr != NULL)
	267	memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
	268	sizeof(struct qdio_ssqd_desc));
	269	else {
	270	memcpy(data, &ssqd->qdio_ssqd,
	271	sizeof(struct qdio_ssqd_desc));
	272	free_page((unsigned long)ssqd);
	273	}
779e6e1c JG	274	return 0;
	275	}
	276
	277	void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
	278	{
	279	unsigned char qdioac;
779e6e1c JG	280	int rc;
779e6e1c JG	281
bbd50e17	282	rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL);
779e6e1c	283	if (rc) {
22f99347 JG	284	DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no);
22f99347 JG	285	DBF_ERROR("rc:%x", rc);
779e6e1c JG	286	/* all flags set, worst case */
	287	qdioac = AC1_SIGA_INPUT_NEEDED \| AC1_SIGA_OUTPUT_NEEDED \|
	288	AC1_SIGA_SYNC_NEEDED;
	289	} else
	290	qdioac = irq_ptr->ssqd_desc.qdioac1;
	291
	292	check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token);
	293	process_ac_flags(irq_ptr, qdioac);
22f99347	294	DBF_EVENT("qdioac:%4x", qdioac);
779e6e1c JG	295	}
	296
	297	void qdio_release_memory(struct qdio_irq *irq_ptr)
	298	{
	299	struct qdio_q *q;
	300	int i;
	301
	302	/*
	303	* Must check queue array manually since irq_ptr->nr_input_queues /
	304	* irq_ptr->nr_input_queues may not yet be set.
	305	*/
	306	for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
	307	q = irq_ptr->input_qs[i];
	308	if (q) {
	309	free_page((unsigned long) q->slib);
	310	kmem_cache_free(qdio_q_cache, q);
	311	}
	312	}
	313	for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
	314	q = irq_ptr->output_qs[i];
	315	if (q) {
	316	free_page((unsigned long) q->slib);
	317	kmem_cache_free(qdio_q_cache, q);
	318	}
	319	}
3b8e3004	320	free_page((unsigned long) irq_ptr->qdr);
779e6e1c JG	321	free_page(irq_ptr->chsc_page);
	322	free_page((unsigned long) irq_ptr);
	323	}
	324
	325	static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr,
	326	struct qdio_q **irq_ptr_qs,
	327	int i, int nr)
	328	{
	329	irq_ptr->qdr->qdf0[i + nr].sliba =
	330	(unsigned long)irq_ptr_qs[i]->slib;
	331
	332	irq_ptr->qdr->qdf0[i + nr].sla =
	333	(unsigned long)irq_ptr_qs[i]->sl;
	334
	335	irq_ptr->qdr->qdf0[i + nr].slsba =
	336	(unsigned long)&irq_ptr_qs[i]->slsb.val[0];
	337
d1bf8590 HC	338	irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4;
	339	irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4;
	340	irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4;
	341	irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4;
779e6e1c JG	342	}
	343
	344	static void setup_qdr(struct qdio_irq *irq_ptr,
	345	struct qdio_initialize *qdio_init)
	346	{
	347	int i;
	348
	349	irq_ptr->qdr->qfmt = qdio_init->q_format;
	350	irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs;
	351	irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs;
	352	irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */
	353	irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4;
	354	irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib;
d1bf8590	355	irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4;
779e6e1c JG	356
	357	for (i = 0; i < qdio_init->no_input_qs; i++)
	358	__qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0);
	359
	360	for (i = 0; i < qdio_init->no_output_qs; i++)
	361	__qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i,
	362	qdio_init->no_input_qs);
	363	}
	364
	365	static void setup_qib(struct qdio_irq *irq_ptr,
	366	struct qdio_initialize *init_data)
	367	{
	368	if (qebsm_possible())
	369	irq_ptr->qib.rflags \|= QIB_RFLAGS_ENABLE_QEBSM;
	370
	371	irq_ptr->qib.qfmt = init_data->q_format;
	372	if (init_data->no_input_qs)
	373	irq_ptr->qib.isliba =
	374	(unsigned long)(irq_ptr->input_qs[0]->slib);
	375	if (init_data->no_output_qs)
	376	irq_ptr->qib.osliba =
	377	(unsigned long)(irq_ptr->output_qs[0]->slib);
	378	memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8);
	379	}
	380
	381	int qdio_setup_irq(struct qdio_initialize *init_data)
	382	{
	383	struct ciw *ciw;
	384	struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data;
	385	int rc;
	386
432ac5e0 JG	387	memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib));
	388	memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag));
	389	memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw));
	390	memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc));
	391	memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
	392
	393	irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL;
	394	irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0;
	395
779e6e1c JG	396	/* wipes qib.ac, required by ar7063 */
	397	memset(irq_ptr->qdr, 0, sizeof(struct qdr));
	398
	399	irq_ptr->int_parm = init_data->int_parm;
	400	irq_ptr->nr_input_qs = init_data->no_input_qs;
	401	irq_ptr->nr_output_qs = init_data->no_output_qs;
	402
	403	irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
	404	irq_ptr->cdev = init_data->cdev;
	405	setup_queues(irq_ptr, init_data);
	406
	407	setup_qib(irq_ptr, init_data);
	408	qdio_setup_thinint(irq_ptr);
	409	set_impl_params(irq_ptr, init_data->qib_param_field_format,
	410	init_data->qib_param_field,
	411	init_data->input_slib_elements,
	412	init_data->output_slib_elements);
	413
	414	/* fill input and output descriptors */
	415	setup_qdr(irq_ptr, init_data);
	416
	417	/* qdr, qib, sls, slsbs, slibs, sbales are filled now */
	418
	419	/* get qdio commands */
	420	ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
	421	if (!ciw) {
22f99347	422	DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no);
779e6e1c JG	423	rc = -EINVAL;
	424	goto out_err;
	425	}
	426	irq_ptr->equeue = *ciw;
	427
	428	ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
	429	if (!ciw) {
22f99347	430	DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no);
779e6e1c JG	431	rc = -EINVAL;
	432	goto out_err;
	433	}
	434	irq_ptr->aqueue = *ciw;
	435
	436	/* set new interrupt handler */
	437	irq_ptr->orig_handler = init_data->cdev->handler;
	438	init_data->cdev->handler = qdio_int_handler;
	439	return 0;
	440	out_err:
	441	qdio_release_memory(irq_ptr);
	442	return rc;
	443	}
	444
	445	void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
	446	struct ccw_device *cdev)
	447	{
	448	char s[80];
	449
22f99347 JG	450	snprintf(s, 80, "qdio: %s %s on SC %x using "
	451	"AI:%d QEBSM:%d PCI:%d TDD:%d SIGA:%s%s%s%s%s%s\n",
	452	dev_name(&cdev->dev),
	453	(irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" :
	454	((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"),
	455	irq_ptr->schid.sch_no,
	456	is_thinint_irq(irq_ptr),
	457	(irq_ptr->sch_token) ? 1 : 0,
	458	(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0,
	459	css_general_characteristics.aif_tdd,
	460	(irq_ptr->siga_flag.input) ? "R" : " ",
	461	(irq_ptr->siga_flag.output) ? "W" : " ",
	462	(irq_ptr->siga_flag.sync) ? "S" : " ",
	463	(!irq_ptr->siga_flag.no_sync_ti) ? "A" : " ",
	464	(!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " ",
	465	(!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " ");
75f62761	466	printk(KERN_INFO "%s", s);
779e6e1c JG	467	}
	468
	469	int __init qdio_setup_init(void)
	470	{
779e6e1c JG	471	qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
	472	256, 0, NULL);
	473	if (!qdio_q_cache)
	474	return -ENOMEM;
	475
	476	/* Check for OSA/FCP thin interrupts (bit 67). */
22f99347 JG	477	DBF_EVENT("thinint:%1d",
22f99347 JG	478	(css_general_characteristics.aif_osa) ? 1 : 0);
779e6e1c JG	479
779e6e1c JG	480	/* Check for QEBSM support in general (bit 58). */
22f99347	481	DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0);
779e6e1c JG	482	return 0;
	483	}
	484
3f1934bc	485	void qdio_setup_exit(void)
779e6e1c JG	486	{
	487	kmem_cache_destroy(qdio_q_cache);
	488	}