projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] PCI Hotplug: new contact info
[linux-block.git] / drivers / pci / hotplug / shpchp_hpc.c
CommitLineData
1da177e4
LT		 1/*
2 * Standard PCI Hot Plug Driver
3 *
4 * Copyright (C) 1995,2001 Compaq Computer Corporation
5 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
6 * Copyright (C) 2001 IBM Corp.
7 * Copyright (C) 2003-2004 Intel Corporation
8 *
9 * All rights reserved.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
19 * NON INFRINGEMENT. See the GNU General Public License for more
20 * details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
8cf4c195 26 * Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com>
1da177e4
LT		 27 *
28 */
29
30#include <linux/config.h>
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/types.h>
34#include <linux/slab.h>
35#include <linux/vmalloc.h>
36#include <linux/interrupt.h>
37#include <linux/spinlock.h>
38#include <linux/delay.h>
39#include <linux/pci.h>
40#include <asm/system.h>
41#include "shpchp.h"
42
43#ifdef DEBUG
44#define DBG_K_TRACE_ENTRY ((unsigned int)0x00000001) /* On function entry */
45#define DBG_K_TRACE_EXIT ((unsigned int)0x00000002) /* On function exit */
46#define DBG_K_INFO ((unsigned int)0x00000004) /* Info messages */
47#define DBG_K_ERROR ((unsigned int)0x00000008) /* Error messages */
48#define DBG_K_TRACE (DBG_K_TRACE_ENTRY|DBG_K_TRACE_EXIT)
49#define DBG_K_STANDARD (DBG_K_INFO|DBG_K_ERROR|DBG_K_TRACE)
50/* Redefine this flagword to set debug level */
51#define DEBUG_LEVEL DBG_K_STANDARD
52
53#define DEFINE_DBG_BUFFER char __dbg_str_buf[256];
54
55#define DBG_PRINT( dbg_flags, args... ) \
56 do { \
57 if ( DEBUG_LEVEL & ( dbg_flags ) ) \
58 { \
59 int len; \
60 len = sprintf( __dbg_str_buf, "%s:%d: %s: ", \
61 __FILE__, __LINE__, __FUNCTION__ ); \
62 sprintf( __dbg_str_buf + len, args ); \
63 printk( KERN_NOTICE "%s\n", __dbg_str_buf ); \
64 } \
65 } while (0)
66
67#define DBG_ENTER_ROUTINE DBG_PRINT (DBG_K_TRACE_ENTRY, "%s", "[Entry]");
68#define DBG_LEAVE_ROUTINE DBG_PRINT (DBG_K_TRACE_EXIT, "%s", "[Exit]");
69#else
70#define DEFINE_DBG_BUFFER
71#define DBG_ENTER_ROUTINE
72#define DBG_LEAVE_ROUTINE
73#endif /* DEBUG */
74
75/* Slot Available Register I field definition */
76#define SLOT_33MHZ 0x0000001f
77#define SLOT_66MHZ_PCIX 0x00001f00
78#define SLOT_100MHZ_PCIX 0x001f0000
79#define SLOT_133MHZ_PCIX 0x1f000000
80
81/* Slot Available Register II field definition */
82#define SLOT_66MHZ 0x0000001f
83#define SLOT_66MHZ_PCIX_266 0x00000f00
84#define SLOT_100MHZ_PCIX_266 0x0000f000
85#define SLOT_133MHZ_PCIX_266 0x000f0000
86#define SLOT_66MHZ_PCIX_533 0x00f00000
87#define SLOT_100MHZ_PCIX_533 0x0f000000
88#define SLOT_133MHZ_PCIX_533 0xf0000000
89
90
91/* Secondary Bus Configuration Register */
92/* For PI = 1, Bits 0 to 2 have been encoded as follows to show current bus speed/mode */
93#define PCI_33MHZ 0x0
94#define PCI_66MHZ 0x1
95#define PCIX_66MHZ 0x2
96#define PCIX_100MHZ 0x3
97#define PCIX_133MHZ 0x4
98
99/* For PI = 2, Bits 0 to 3 have been encoded as follows to show current bus speed/mode */
100#define PCI_33MHZ 0x0
101#define PCI_66MHZ 0x1
102#define PCIX_66MHZ 0x2
103#define PCIX_100MHZ 0x3
104#define PCIX_133MHZ 0x4
105#define PCIX_66MHZ_ECC 0x5
106#define PCIX_100MHZ_ECC 0x6
107#define PCIX_133MHZ_ECC 0x7
108#define PCIX_66MHZ_266 0x9
109#define PCIX_100MHZ_266 0xa
110#define PCIX_133MHZ_266 0xb
111#define PCIX_66MHZ_533 0x11
112#define PCIX_100MHZ_533 0x12
113#define PCIX_133MHZ_533 0x13
114
115/* Slot Configuration */
116#define SLOT_NUM 0x0000001F
117#define FIRST_DEV_NUM 0x00001F00
118#define PSN 0x07FF0000
119#define UPDOWN 0x20000000
120#define MRLSENSOR 0x40000000
121#define ATTN_BUTTON 0x80000000
122
123/* Slot Status Field Definitions */
124/* Slot State */
125#define PWR_ONLY 0x0001
126#define ENABLED 0x0002
127#define DISABLED 0x0003
128
129/* Power Indicator State */
130#define PWR_LED_ON 0x0004
131#define PWR_LED_BLINK 0x0008
132#define PWR_LED_OFF 0x000c
133
134/* Attention Indicator State */
135#define ATTEN_LED_ON 0x0010
136#define ATTEN_LED_BLINK 0x0020
137#define ATTEN_LED_OFF 0x0030
138
139/* Power Fault */
140#define pwr_fault 0x0040
141
142/* Attention Button */
143#define ATTEN_BUTTON 0x0080
144
145/* MRL Sensor */
146#define MRL_SENSOR 0x0100
147
148/* 66 MHz Capable */
149#define IS_66MHZ_CAP 0x0200
150
151/* PRSNT1#/PRSNT2# */
152#define SLOT_EMP 0x0c00
153
154/* PCI-X Capability */
155#define NON_PCIX 0x0000
156#define PCIX_66 0x1000
157#define PCIX_133 0x3000
158#define PCIX_266 0x4000 /* For PI = 2 only */
159#define PCIX_533 0x5000 /* For PI = 2 only */
160
161/* SHPC 'write' operations/commands */
162
163/* Slot operation - 0x00h to 0x3Fh */
164
165#define NO_CHANGE 0x00
166
167/* Slot state - Bits 0 & 1 of controller command register */
168#define SET_SLOT_PWR 0x01
169#define SET_SLOT_ENABLE 0x02
170#define SET_SLOT_DISABLE 0x03
171
172/* Power indicator state - Bits 2 & 3 of controller command register*/
173#define SET_PWR_ON 0x04
174#define SET_PWR_BLINK 0x08
175#define SET_PWR_OFF 0x0C
176
177/* Attention indicator state - Bits 4 & 5 of controller command register*/
178#define SET_ATTN_ON 0x010
179#define SET_ATTN_BLINK 0x020
180#define SET_ATTN_OFF 0x030
181
182/* Set bus speed/mode A - 0x40h to 0x47h */
183#define SETA_PCI_33MHZ 0x40
184#define SETA_PCI_66MHZ 0x41
185#define SETA_PCIX_66MHZ 0x42
186#define SETA_PCIX_100MHZ 0x43
187#define SETA_PCIX_133MHZ 0x44
188#define RESERV_1 0x45
189#define RESERV_2 0x46
190#define RESERV_3 0x47
191
192/* Set bus speed/mode B - 0x50h to 0x5fh */
193#define SETB_PCI_33MHZ 0x50
194#define SETB_PCI_66MHZ 0x51
195#define SETB_PCIX_66MHZ_PM 0x52
196#define SETB_PCIX_100MHZ_PM 0x53
197#define SETB_PCIX_133MHZ_PM 0x54
198#define SETB_PCIX_66MHZ_EM 0x55
199#define SETB_PCIX_100MHZ_EM 0x56
200#define SETB_PCIX_133MHZ_EM 0x57
201#define SETB_PCIX_66MHZ_266 0x58
202#define SETB_PCIX_100MHZ_266 0x59
203#define SETB_PCIX_133MHZ_266 0x5a
204#define SETB_PCIX_66MHZ_533 0x5b
205#define SETB_PCIX_100MHZ_533 0x5c
206#define SETB_PCIX_133MHZ_533 0x5d
207
208
209/* Power-on all slots - 0x48h */
210#define SET_PWR_ON_ALL 0x48
211
212/* Enable all slots - 0x49h */
213#define SET_ENABLE_ALL 0x49
214
215/* SHPC controller command error code */
216#define SWITCH_OPEN 0x1
217#define INVALID_CMD 0x2
218#define INVALID_SPEED_MODE 0x4
219
220/* For accessing SHPC Working Register Set */
221#define DWORD_SELECT 0x2
222#define DWORD_DATA 0x4
223#define BASE_OFFSET 0x0
224
225/* Field Offset in Logical Slot Register - byte boundary */
226#define SLOT_EVENT_LATCH 0x2
227#define SLOT_SERR_INT_MASK 0x3
228
229static spinlock_t hpc_event_lock;
230
231DEFINE_DBG_BUFFER /* Debug string buffer for entire HPC defined here */
232static struct php_ctlr_state_s *php_ctlr_list_head; /* HPC state linked list */
233static int ctlr_seq_num = 0; /* Controller sequenc # */
234static spinlock_t list_lock;
235
236static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs);
237
238static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int seconds);
239
240/* This is the interrupt polling timeout function. */
241static void int_poll_timeout(unsigned long lphp_ctlr)
242{
243 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *)lphp_ctlr;
244
245 DBG_ENTER_ROUTINE
246
247 if ( !php_ctlr ) {
248 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
249 return;
250 }
251
252 /* Poll for interrupt events. regs == NULL => polling */
253 shpc_isr( 0, (void *)php_ctlr, NULL );
254
255 init_timer(&php_ctlr->int_poll_timer);
256 if (!shpchp_poll_time)
257 shpchp_poll_time = 2; /* reset timer to poll in 2 secs if user doesn't specify at module installation*/
258
259 start_int_poll_timer(php_ctlr, shpchp_poll_time);
260
261 return;
262}
263
264/* This function starts the interrupt polling timer. */
265static void start_int_poll_timer(struct php_ctlr_state_s *php_ctlr, int seconds)
266{
267 if (!php_ctlr) {
268 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
269 return;
270 }
271
272 if ( ( seconds <= 0 ) || ( seconds > 60 ) )
273 seconds = 2; /* Clamp to sane value */
274
275 php_ctlr->int_poll_timer.function = &int_poll_timeout;
276 php_ctlr->int_poll_timer.data = (unsigned long)php_ctlr; /* Instance data */
277 php_ctlr->int_poll_timer.expires = jiffies + seconds * HZ;
278 add_timer(&php_ctlr->int_poll_timer);
279
280 return;
281}
282
283static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
284{
285 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
286 u16 cmd_status;
287 int retval = 0;
288 u16 temp_word;
289 int i;
290
291 DBG_ENTER_ROUTINE
292
293 if (!php_ctlr) {
294 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
295 return -1;
296 }
297
298 for (i = 0; i < 10; i++) {
299 cmd_status = readw(php_ctlr->creg + CMD_STATUS);
300
301 if (!(cmd_status & 0x1))
302 break;
303 /* Check every 0.1 sec for a total of 1 sec*/
304 msleep(100);
305 }
306
307 cmd_status = readw(php_ctlr->creg + CMD_STATUS);
308
309 if (cmd_status & 0x1) {
310 /* After 1 sec and and the controller is still busy */
311 err("%s : Controller is still busy after 1 sec.\n", __FUNCTION__);
312 return -1;
313 }
314
315 ++t_slot;
316 temp_word = (t_slot << 8) | (cmd & 0xFF);
317 dbg("%s: t_slot %x cmd %x\n", __FUNCTION__, t_slot, cmd);
318
319 /* To make sure the Controller Busy bit is 0 before we send out the
320 * command.
321 */
322 writew(temp_word, php_ctlr->creg + CMD);
323 dbg("%s: temp_word written %x\n", __FUNCTION__, temp_word);
324
325 DBG_LEAVE_ROUTINE
326 return retval;
327}
328
329static int hpc_check_cmd_status(struct controller *ctrl)
330{
331 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) ctrl->hpc_ctlr_handle;
332 u16 cmd_status;
333 int retval = 0;
334
335 DBG_ENTER_ROUTINE
336
337 if (!ctrl->hpc_ctlr_handle) {
338 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
339 return -1;
340 }
341
342 cmd_status = readw(php_ctlr->creg + CMD_STATUS) & 0x000F;
343
344 switch (cmd_status >> 1) {
345 case 0:
346 retval = 0;
347 break;
348 case 1:
349 retval = SWITCH_OPEN;
350 err("%s: Switch opened!\n", __FUNCTION__);
351 break;
352 case 2:
353 retval = INVALID_CMD;
354 err("%s: Invalid HPC command!\n", __FUNCTION__);
355 break;
356 case 4:
357 retval = INVALID_SPEED_MODE;
358 err("%s: Invalid bus speed/mode!\n", __FUNCTION__);
359 break;
360 default:
361 retval = cmd_status;
362 }
363
364 DBG_LEAVE_ROUTINE
365 return retval;
366}
367
368
369static int hpc_get_attention_status(struct slot *slot, u8 *status)
370{
371 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
372 u32 slot_reg;
373 u16 slot_status;
374 u8 atten_led_state;
375
376 DBG_ENTER_ROUTINE
377
378 if (!slot->ctrl->hpc_ctlr_handle) {
379 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
380 return -1;
381 }
382
383 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
384 slot_status = (u16) slot_reg;
385 atten_led_state = (slot_status & 0x0030) >> 4;
386
387 switch (atten_led_state) {
388 case 0:
389 *status = 0xFF; /* Reserved */
390 break;
391 case 1:
392 *status = 1; /* On */
393 break;
394 case 2:
395 *status = 2; /* Blink */
396 break;
397 case 3:
398 *status = 0; /* Off */
399 break;
400 default:
401 *status = 0xFF;
402 break;
403 }
404
405 DBG_LEAVE_ROUTINE
406 return 0;
407}
408
409static int hpc_get_power_status(struct slot * slot, u8 *status)
410{
411 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
412 u32 slot_reg;
413 u16 slot_status;
414 u8 slot_state;
415 int retval = 0;
416
417 DBG_ENTER_ROUTINE
418
419 if (!slot->ctrl->hpc_ctlr_handle) {
420 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
421 return -1;
422 }
423
424 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
425 slot_status = (u16) slot_reg;
426 slot_state = (slot_status & 0x0003);
427
428 switch (slot_state) {
429 case 0:
430 *status = 0xFF;
431 break;
432 case 1:
433 *status = 2; /* Powered only */
434 break;
435 case 2:
436 *status = 1; /* Enabled */
437 break;
438 case 3:
439 *status = 0; /* Disabled */
440 break;
441 default:
442 *status = 0xFF;
443 break;
444 }
445
446 DBG_LEAVE_ROUTINE
447 return retval;
448}
449
450
451static int hpc_get_latch_status(struct slot *slot, u8 *status)
452{
453 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
454 u32 slot_reg;
455 u16 slot_status;
456
457 DBG_ENTER_ROUTINE
458
459 if (!slot->ctrl->hpc_ctlr_handle) {
460 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
461 return -1;
462 }
463
464 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
465 slot_status = (u16)slot_reg;
466
467 *status = ((slot_status & 0x0100) == 0) ? 0 : 1; /* 0 -> close; 1 -> open */
468
469
470 DBG_LEAVE_ROUTINE
471 return 0;
472}
473
474static int hpc_get_adapter_status(struct slot *slot, u8 *status)
475{
476 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
477 u32 slot_reg;
478 u16 slot_status;
479 u8 card_state;
480
481 DBG_ENTER_ROUTINE
482
483 if (!slot->ctrl->hpc_ctlr_handle) {
484 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
485 return -1;
486 }
487
488 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
489 slot_status = (u16)slot_reg;
490 card_state = (u8)((slot_status & 0x0C00) >> 10);
491 *status = (card_state != 0x3) ? 1 : 0;
492
493 DBG_LEAVE_ROUTINE
494 return 0;
495}
496
497static int hpc_get_prog_int(struct slot *slot, u8 *prog_int)
498{
499 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
500
501 DBG_ENTER_ROUTINE
502
503 if (!slot->ctrl->hpc_ctlr_handle) {
504 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
505 return -1;
506 }
507
508 *prog_int = readb(php_ctlr->creg + PROG_INTERFACE);
509
510 DBG_LEAVE_ROUTINE
511 return 0;
512}
513
514static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value)
515{
516 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
517 u32 slot_reg;
518 u16 slot_status, sec_bus_status;
519 u8 m66_cap, pcix_cap, pi;
520 int retval = 0;
521
522 DBG_ENTER_ROUTINE
523
524 if (!slot->ctrl->hpc_ctlr_handle) {
525 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
526 return -1;
527 }
528
529 if (slot->hp_slot >= php_ctlr->num_slots) {
530 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
531 return -1;
532 }
533
534 pi = readb(php_ctlr->creg + PROG_INTERFACE);
535 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
536 dbg("%s: pi = %d, slot_reg = %x\n", __FUNCTION__, pi, slot_reg);
537 slot_status = (u16) slot_reg;
538 dbg("%s: slot_status = %x\n", __FUNCTION__, slot_status);
539 sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG);
540
541 pcix_cap = (u8) ((slot_status & 0x3000) >> 12);
542 dbg("%s: pcix_cap = %x\n", __FUNCTION__, pcix_cap);
543 m66_cap = (u8) ((slot_status & 0x0200) >> 9);
544 dbg("%s: m66_cap = %x\n", __FUNCTION__, m66_cap);
545
546
547 if (pi == 2) {
548 switch (pcix_cap) {
549 case 0:
550 *value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
551 break;
552 case 1:
553 *value = PCI_SPEED_66MHz_PCIX;
554 break;
555 case 3:
556 *value = PCI_SPEED_133MHz_PCIX;
557 break;
558 case 4:
559 *value = PCI_SPEED_133MHz_PCIX_266;
560 break;
561 case 5:
562 *value = PCI_SPEED_133MHz_PCIX_533;
563 break;
564 case 2: /* Reserved */
565 default:
566 *value = PCI_SPEED_UNKNOWN;
567 retval = -ENODEV;
568 break;
569 }
570 } else {
571 switch (pcix_cap) {
572 case 0:
573 *value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
574 break;
575 case 1:
576 *value = PCI_SPEED_66MHz_PCIX;
577 break;
578 case 3:
579 *value = PCI_SPEED_133MHz_PCIX;
580 break;
581 case 2: /* Reserved */
582 default:
583 *value = PCI_SPEED_UNKNOWN;
584 retval = -ENODEV;
585 break;
586 }
587 }
588
589 dbg("Adapter speed = %d\n", *value);
590
591 DBG_LEAVE_ROUTINE
592 return retval;
593}
594
595static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode)
596{
597 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
598 u16 sec_bus_status;
599 u8 pi;
600 int retval = 0;
601
602 DBG_ENTER_ROUTINE
603
604 if (!slot->ctrl->hpc_ctlr_handle) {
605 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
606 return -1;
607 }
608
609 pi = readb(php_ctlr->creg + PROG_INTERFACE);
610 sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG);
611
612 if (pi == 2) {
613 *mode = (sec_bus_status & 0x0100) >> 7;
614 } else {
615 retval = -1;
616 }
617
618 dbg("Mode 1 ECC cap = %d\n", *mode);
619
620 DBG_LEAVE_ROUTINE
621 return retval;
622}
623
624static int hpc_query_power_fault(struct slot * slot)
625{
626 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
627 u32 slot_reg;
628 u16 slot_status;
629 u8 pwr_fault_state, status;
630
631 DBG_ENTER_ROUTINE
632
633 if (!slot->ctrl->hpc_ctlr_handle) {
634 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
635 return -1;
636 }
637
638 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*(slot->hp_slot));
639 slot_status = (u16) slot_reg;
640 pwr_fault_state = (slot_status & 0x0040) >> 7;
641 status = (pwr_fault_state == 1) ? 0 : 1;
642
643 DBG_LEAVE_ROUTINE
644 /* Note: Logic 0 => fault */
645 return status;
646}
647
648static int hpc_set_attention_status(struct slot *slot, u8 value)
649{
650 struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
651 u8 slot_cmd = 0;
652 int rc = 0;
653
654 if (!slot->ctrl->hpc_ctlr_handle) {
655 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
656 return -1;
657 }
658
659 if (slot->hp_slot >= php_ctlr->num_slots) {
660 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
661 return -1;
662 }
663
664 switch (value) {
665 case 0 :
666 slot_cmd = 0x30; /* OFF */
667 break;
668 case 1:
669 slot_cmd = 0x10; /* ON */
670 break;
671 case 2:
672 slot_cmd = 0x20; /* BLINK */
673 break;
674 default:
675 return -1;
676 }
677
678 shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
679
680 return rc;
681}
682
683
684static void hpc_set_green_led_on(struct slot *slot)
685{
686 struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
687 u8 slot_cmd;
688
689 if (!slot->ctrl->hpc_ctlr_handle) {
690 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
691 return ;
692 }
693
694 if (slot->hp_slot >= php_ctlr->num_slots) {
695 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
696 return ;
697 }
698
699 slot_cmd = 0x04;
700
701 shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
702
703 return;
704}
705
706static void hpc_set_green_led_off(struct slot *slot)
707{
708 struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
709 u8 slot_cmd;
710
711 if (!slot->ctrl->hpc_ctlr_handle) {
712 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
713 return ;
714 }
715
716 if (slot->hp_slot >= php_ctlr->num_slots) {
717 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
718 return ;
719 }
720
721 slot_cmd = 0x0C;
722
723 shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
724
725 return;
726}
727
728static void hpc_set_green_led_blink(struct slot *slot)
729{
730 struct php_ctlr_state_s *php_ctlr =(struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
731 u8 slot_cmd;
732
733 if (!slot->ctrl->hpc_ctlr_handle) {
734 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
735 return ;
736 }
737
738 if (slot->hp_slot >= php_ctlr->num_slots) {
739 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
740 return ;
741 }
742
743 slot_cmd = 0x08;
744
745 shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
746
747 return;
748}
749
750int shpc_get_ctlr_slot_config(struct controller *ctrl,
751 int *num_ctlr_slots, /* number of slots in this HPC */
752 int *first_device_num, /* PCI dev num of the first slot in this SHPC */
753 int *physical_slot_num, /* phy slot num of the first slot in this SHPC */
754 int *updown, /* physical_slot_num increament: 1 or -1 */
755 int *flags)
756{
757 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) ctrl->hpc_ctlr_handle;
758
759 DBG_ENTER_ROUTINE
760
761 if (!ctrl->hpc_ctlr_handle) {
762 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
763 return -1;
764 }
765
766 *first_device_num = php_ctlr->slot_device_offset; /* Obtained in shpc_init() */
767 *num_ctlr_slots = php_ctlr->num_slots; /* Obtained in shpc_init() */
768
769 *physical_slot_num = (readl(php_ctlr->creg + SLOT_CONFIG) & PSN) >> 16;
770 dbg("%s: physical_slot_num = %x\n", __FUNCTION__, *physical_slot_num);
771 *updown = ((readl(php_ctlr->creg + SLOT_CONFIG) & UPDOWN ) >> 29) ? 1 : -1;
772
773 DBG_LEAVE_ROUTINE
774 return 0;
775}
776
777static void hpc_release_ctlr(struct controller *ctrl)
778{
779 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) ctrl->hpc_ctlr_handle;
780 struct php_ctlr_state_s *p, *p_prev;
781
782 DBG_ENTER_ROUTINE
783
784 if (!ctrl->hpc_ctlr_handle) {
785 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
786 return ;
787 }
788
789 if (shpchp_poll_mode) {
790 del_timer(&php_ctlr->int_poll_timer);
791 } else {
792 if (php_ctlr->irq) {
793 free_irq(php_ctlr->irq, ctrl);
794 php_ctlr->irq = 0;
795 pci_disable_msi(php_ctlr->pci_dev);
796 }
797 }
798 if (php_ctlr->pci_dev) {
799 dbg("%s: before calling iounmap & release_mem_region\n", __FUNCTION__);
800 iounmap(php_ctlr->creg);
801 release_mem_region(pci_resource_start(php_ctlr->pci_dev, 0), pci_resource_len(php_ctlr->pci_dev, 0));
802 dbg("%s: before calling iounmap & release_mem_region\n", __FUNCTION__);
803 php_ctlr->pci_dev = NULL;
804 }
805
806 spin_lock(&list_lock);
807 p = php_ctlr_list_head;
808 p_prev = NULL;
809 while (p) {
810 if (p == php_ctlr) {
811 if (p_prev)
812 p_prev->pnext = p->pnext;
813 else
814 php_ctlr_list_head = p->pnext;
815 break;
816 } else {
817 p_prev = p;
818 p = p->pnext;
819 }
820 }
821 spin_unlock(&list_lock);
822
823 kfree(php_ctlr);
824
825DBG_LEAVE_ROUTINE
826
827}
828
829static int hpc_power_on_slot(struct slot * slot)
830{
831 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
832 u8 slot_cmd;
833 int retval = 0;
834
835 DBG_ENTER_ROUTINE
836
837 if (!slot->ctrl->hpc_ctlr_handle) {
838 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
839 return -1;
840 }
841
842 if (slot->hp_slot >= php_ctlr->num_slots) {
843 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
844 return -1;
845 }
846 slot_cmd = 0x01;
847
848 retval = shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
849
850 if (retval) {
851 err("%s: Write command failed!\n", __FUNCTION__);
852 return -1;
853 }
854
855 DBG_LEAVE_ROUTINE
856
857 return retval;
858}
859
860static int hpc_slot_enable(struct slot * slot)
861{
862 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
863 u8 slot_cmd;
864 int retval = 0;
865
866 DBG_ENTER_ROUTINE
867
868 if (!slot->ctrl->hpc_ctlr_handle) {
869 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
870 return -1;
871 }
872
873 if (slot->hp_slot >= php_ctlr->num_slots) {
874 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
875 return -1;
876 }
877 /* 3A => Slot - Enable, Power Indicator - Blink, Attention Indicator - Off */
878 slot_cmd = 0x3A;
879
880 retval = shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
881
882 if (retval) {
883 err("%s: Write command failed!\n", __FUNCTION__);
884 return -1;
885 }
886
887 DBG_LEAVE_ROUTINE
888 return retval;
889}
890
891static int hpc_slot_disable(struct slot * slot)
892{
893 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
894 u8 slot_cmd;
895 int retval = 0;
896
897 DBG_ENTER_ROUTINE
898
899 if (!slot->ctrl->hpc_ctlr_handle) {
900 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
901 return -1;
902 }
903
904 if (slot->hp_slot >= php_ctlr->num_slots) {
905 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
906 return -1;
907 }
908
909 /* 1F => Slot - Disable, Power Indicator - Off, Attention Indicator - On */
910 slot_cmd = 0x1F;
911
912 retval = shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
913
914 if (retval) {
915 err("%s: Write command failed!\n", __FUNCTION__);
916 return -1;
917 }
918
919 DBG_LEAVE_ROUTINE
920 return retval;
921}
922
923static int hpc_enable_all_slots( struct slot *slot )
924{
925 int retval = 0;
926
927 DBG_ENTER_ROUTINE
928
929 if (!slot->ctrl->hpc_ctlr_handle) {
930 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
931 return -1;
932 }
933
934 retval = shpc_write_cmd(slot, 0, SET_ENABLE_ALL);
935 if (retval) {
936 err("%s: Write command failed!\n", __FUNCTION__);
937 return -1;
938 }
939
940 DBG_LEAVE_ROUTINE
941
942 return retval;
943}
944
945static int hpc_pwr_on_all_slots(struct slot *slot)
946{
947 int retval = 0;
948
949 DBG_ENTER_ROUTINE
950
951 retval = shpc_write_cmd(slot, 0, SET_PWR_ON_ALL);
952
953 if (retval) {
954 err("%s: Write command failed!\n", __FUNCTION__);
955 return -1;
956 }
957
958 DBG_LEAVE_ROUTINE
959 return retval;
960}
961
962static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value)
963{
964 u8 slot_cmd;
965 u8 pi;
966 int retval = 0;
967 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
968
969 DBG_ENTER_ROUTINE
970
971 if (!slot->ctrl->hpc_ctlr_handle) {
972 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
973 return -1;
974 }
975
976 pi = readb(php_ctlr->creg + PROG_INTERFACE);
977
978 if (pi == 1) {
979 switch (value) {
980 case 0:
981 slot_cmd = SETA_PCI_33MHZ;
982 break;
983 case 1:
984 slot_cmd = SETA_PCI_66MHZ;
985 break;
986 case 2:
987 slot_cmd = SETA_PCIX_66MHZ;
988 break;
989 case 3:
990 slot_cmd = SETA_PCIX_100MHZ;
991 break;
992 case 4:
993 slot_cmd = SETA_PCIX_133MHZ;
994 break;
995 default:
996 slot_cmd = PCI_SPEED_UNKNOWN;
997 retval = -ENODEV;
998 return retval;
999 }
1000 } else {
1001 switch (value) {
1002 case 0:
1003 slot_cmd = SETB_PCI_33MHZ;
1004 break;
1005 case 1:
1006 slot_cmd = SETB_PCI_66MHZ;
1007 break;
1008 case 2:
1009 slot_cmd = SETB_PCIX_66MHZ_PM;
1010 break;
1011 case 3:
1012 slot_cmd = SETB_PCIX_100MHZ_PM;
1013 break;
1014 case 4:
1015 slot_cmd = SETB_PCIX_133MHZ_PM;
1016 break;
1017 case 5:
1018 slot_cmd = SETB_PCIX_66MHZ_EM;
1019 break;
1020 case 6:
1021 slot_cmd = SETB_PCIX_100MHZ_EM;
1022 break;
1023 case 7:
1024 slot_cmd = SETB_PCIX_133MHZ_EM;
1025 break;
1026 case 8:
1027 slot_cmd = SETB_PCIX_66MHZ_266;
1028 break;
1029 case 0x9:
1030 slot_cmd = SETB_PCIX_100MHZ_266;
1031 break;
1032 case 0xa:
1033 slot_cmd = SETB_PCIX_133MHZ_266;
1034 break;
1035 case 0xb:
1036 slot_cmd = SETB_PCIX_66MHZ_533;
1037 break;
1038 case 0xc:
1039 slot_cmd = SETB_PCIX_100MHZ_533;
1040 break;
1041 case 0xd:
1042 slot_cmd = SETB_PCIX_133MHZ_533;
1043 break;
1044 default:
1045 slot_cmd = PCI_SPEED_UNKNOWN;
1046 retval = -ENODEV;
1047 return retval;
1048 }
1049
1050 }
1051 retval = shpc_write_cmd(slot, 0, slot_cmd);
1052 if (retval) {
1053 err("%s: Write command failed!\n", __FUNCTION__);
1054 return -1;
1055 }
1056
1057 DBG_LEAVE_ROUTINE
1058 return retval;
1059}
1060
1061static irqreturn_t shpc_isr(int IRQ, void *dev_id, struct pt_regs *regs)
1062{
1063 struct controller *ctrl = NULL;
1064 struct php_ctlr_state_s *php_ctlr;
1065 u8 schedule_flag = 0;
1066 u8 temp_byte;
1067 u32 temp_dword, intr_loc, intr_loc2;
1068 int hp_slot;
1069
1070 if (!dev_id)
1071 return IRQ_NONE;
1072
1073 if (!shpchp_poll_mode) {
1074 ctrl = (struct controller *)dev_id;
1075 php_ctlr = ctrl->hpc_ctlr_handle;
1076 } else {
1077 php_ctlr = (struct php_ctlr_state_s *) dev_id;
1078 ctrl = (struct controller *)php_ctlr->callback_instance_id;
1079 }
1080
1081 if (!ctrl)
1082 return IRQ_NONE;
1083
1084 if (!php_ctlr || !php_ctlr->creg)
1085 return IRQ_NONE;
1086
1087 /* Check to see if it was our interrupt */
1088 intr_loc = readl(php_ctlr->creg + INTR_LOC);
1089
1090 if (!intr_loc)
1091 return IRQ_NONE;
1092 dbg("%s: shpc_isr proceeds\n", __FUNCTION__);
1093 dbg("%s: intr_loc = %x\n",__FUNCTION__, intr_loc);
1094
1095 if(!shpchp_poll_mode) {
1096 /* Mask Global Interrupt Mask - see implementation note on p. 139 */
1097 /* of SHPC spec rev 1.0*/
1098 temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1099 dbg("%s: Before masking global interrupt, temp_dword = %x\n",
1100 __FUNCTION__, temp_dword);
1101 temp_dword |= 0x00000001;
1102 dbg("%s: After masking global interrupt, temp_dword = %x\n",
1103 __FUNCTION__, temp_dword);
1104 writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE);
1105
1106 intr_loc2 = readl(php_ctlr->creg + INTR_LOC);
1107 dbg("%s: intr_loc2 = %x\n",__FUNCTION__, intr_loc2);
1108 }
1109
1110 if (intr_loc & 0x0001) {
1111 /*
1112 * Command Complete Interrupt Pending
1113 * RO only - clear by writing 0 to the Command Completion
1114 * Detect bit in Controller SERR-INT register
1115 */
1116 temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1117 dbg("%s: Before clearing CCIP, temp_dword = %x\n",
1118 __FUNCTION__, temp_dword);
1119 temp_dword &= 0xfffeffff;
1120 dbg("%s: After clearing CCIP, temp_dword = %x\n",
1121 __FUNCTION__, temp_dword);
1122 writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE);
1123 wake_up_interruptible(&ctrl->queue);
1124 }
1125
1126 if ((intr_loc = (intr_loc >> 1)) == 0) {
1127 /* Unmask Global Interrupt Mask */
1128 temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1129 dbg("%s: 1-Before unmasking global interrupt, temp_dword = %x\n",
1130 __FUNCTION__, temp_dword);
1131 temp_dword &= 0xfffffffe;
1132 dbg("%s: 1-After unmasking global interrupt, temp_dword = %x\n",
1133 __FUNCTION__, temp_dword);
1134 writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE);
1135
1136 return IRQ_NONE;
1137 }
1138
1139 for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) {
1140 /* To find out which slot has interrupt pending */
1141 if ((intr_loc >> hp_slot) & 0x01) {
1142 temp_dword = readl(php_ctlr->creg + SLOT1 + (4*hp_slot));
1143 dbg("%s: Slot %x with intr, temp_dword = %x\n",
1144 __FUNCTION__, hp_slot, temp_dword);
1145 temp_byte = (temp_dword >> 16) & 0xFF;
1146 dbg("%s: Slot with intr, temp_byte = %x\n",
1147 __FUNCTION__, temp_byte);
1148 if ((php_ctlr->switch_change_callback) && (temp_byte & 0x08))
1149 schedule_flag += php_ctlr->switch_change_callback(
1150 hp_slot, php_ctlr->callback_instance_id);
1151 if ((php_ctlr->attention_button_callback) && (temp_byte & 0x04))
1152 schedule_flag += php_ctlr->attention_button_callback(
1153 hp_slot, php_ctlr->callback_instance_id);
1154 if ((php_ctlr->presence_change_callback) && (temp_byte & 0x01))
1155 schedule_flag += php_ctlr->presence_change_callback(
1156 hp_slot , php_ctlr->callback_instance_id);
1157 if ((php_ctlr->power_fault_callback) && (temp_byte & 0x12))
1158 schedule_flag += php_ctlr->power_fault_callback(
1159 hp_slot, php_ctlr->callback_instance_id);
1160
1161 /* Clear all slot events */
1162 temp_dword = 0xe01f3fff;
1163 dbg("%s: Clearing slot events, temp_dword = %x\n",
1164 __FUNCTION__, temp_dword);
1165 writel(temp_dword, php_ctlr->creg + SLOT1 + (4*hp_slot));
1166
1167 intr_loc2 = readl(php_ctlr->creg + INTR_LOC);
1168 dbg("%s: intr_loc2 = %x\n",__FUNCTION__, intr_loc2);
1169 }
1170 }
1171 if (!shpchp_poll_mode) {
1172 /* Unmask Global Interrupt Mask */
1173 temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1174 dbg("%s: 2-Before unmasking global interrupt, temp_dword = %x\n",
1175 __FUNCTION__, temp_dword);
1176 temp_dword &= 0xfffffffe;
1177 dbg("%s: 2-After unmasking global interrupt, temp_dword = %x\n",
1178 __FUNCTION__, temp_dword);
1179 writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE);
1180 }
1181
1182 return IRQ_HANDLED;
1183}
1184
1185static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value)
1186{
1187 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
1188 enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN;
1189 int retval = 0;
1190 u8 pi;
1191 u32 slot_avail1, slot_avail2;
1192 int slot_num;
1193
1194 DBG_ENTER_ROUTINE
1195
1196 if (!slot->ctrl->hpc_ctlr_handle) {
1197 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
1198 return -1;
1199 }
1200
1201 if (slot->hp_slot >= php_ctlr->num_slots) {
1202 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
1203 return -1;
1204 }
1205
1206 pi = readb(php_ctlr->creg + PROG_INTERFACE);
1207 slot_avail1 = readl(php_ctlr->creg + SLOT_AVAIL1);
1208 slot_avail2 = readl(php_ctlr->creg + SLOT_AVAIL2);
1209
1210 if (pi == 2) {
1211 if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_533) >> 27) ) != 0 )
1212 bus_speed = PCIX_133MHZ_533;
1213 else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_533) >> 23) ) != 0 )
1214 bus_speed = PCIX_100MHZ_533;
1215 else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_533) >> 19) ) != 0 )
1216 bus_speed = PCIX_66MHZ_533;
1217 else if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_266) >> 15) ) != 0 )
1218 bus_speed = PCIX_133MHZ_266;
1219 else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_266) >> 11) ) != 0 )
1220 bus_speed = PCIX_100MHZ_266;
1221 else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_266) >> 7) ) != 0 )
1222 bus_speed = PCIX_66MHZ_266;
1223 else if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 )
1224 bus_speed = PCIX_133MHZ;
1225 else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 )
1226 bus_speed = PCIX_100MHZ;
1227 else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 )
1228 bus_speed = PCIX_66MHZ;
1229 else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 )
1230 bus_speed = PCI_66MHZ;
1231 else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 )
1232 bus_speed = PCI_33MHZ;
1233 else bus_speed = PCI_SPEED_UNKNOWN;
1234 } else {
1235 if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 )
1236 bus_speed = PCIX_133MHZ;
1237 else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 )
1238 bus_speed = PCIX_100MHZ;
1239 else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 )
1240 bus_speed = PCIX_66MHZ;
1241 else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 )
1242 bus_speed = PCI_66MHZ;
1243 else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 )
1244 bus_speed = PCI_33MHZ;
1245 else bus_speed = PCI_SPEED_UNKNOWN;
1246 }
1247
1248 *value = bus_speed;
1249 dbg("Max bus speed = %d\n", bus_speed);
1250 DBG_LEAVE_ROUTINE
1251 return retval;
1252}
1253
1254static int hpc_get_cur_bus_speed (struct slot *slot, enum pci_bus_speed *value)
1255{
1256 struct php_ctlr_state_s *php_ctlr = (struct php_ctlr_state_s *) slot->ctrl->hpc_ctlr_handle;
1257 enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN;
1258 u16 sec_bus_status;
1259 int retval = 0;
1260 u8 pi;
1261
1262 DBG_ENTER_ROUTINE
1263
1264 if (!slot->ctrl->hpc_ctlr_handle) {
1265 err("%s: Invalid HPC controller handle!\n", __FUNCTION__);
1266 return -1;
1267 }
1268
1269 if (slot->hp_slot >= php_ctlr->num_slots) {
1270 err("%s: Invalid HPC slot number!\n", __FUNCTION__);
1271 return -1;
1272 }
1273
1274 pi = readb(php_ctlr->creg + PROG_INTERFACE);
1275 sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG);
1276
1277 if (pi == 2) {
1278 switch (sec_bus_status & 0x000f) {
1279 case 0:
1280 bus_speed = PCI_SPEED_33MHz;
1281 break;
1282 case 1:
1283 bus_speed = PCI_SPEED_66MHz;
1284 break;
1285 case 2:
1286 bus_speed = PCI_SPEED_66MHz_PCIX;
1287 break;
1288 case 3:
1289 bus_speed = PCI_SPEED_100MHz_PCIX;
1290 break;
1291 case 4:
1292 bus_speed = PCI_SPEED_133MHz_PCIX;
1293 break;
1294 case 5:
1295 bus_speed = PCI_SPEED_66MHz_PCIX_ECC;
1296 break;
1297 case 6:
1298 bus_speed = PCI_SPEED_100MHz_PCIX_ECC;
1299 break;
1300 case 7:
1301 bus_speed = PCI_SPEED_133MHz_PCIX_ECC;
1302 break;
1303 case 8:
1304 bus_speed = PCI_SPEED_66MHz_PCIX_266;
1305 break;
1306 case 9:
1307 bus_speed = PCI_SPEED_100MHz_PCIX_266;
1308 break;
1309 case 0xa:
1310 bus_speed = PCI_SPEED_133MHz_PCIX_266;
1311 break;
1312 case 0xb:
1313 bus_speed = PCI_SPEED_66MHz_PCIX_533;
1314 break;
1315 case 0xc:
1316 bus_speed = PCI_SPEED_100MHz_PCIX_533;
1317 break;
1318 case 0xd:
1319 bus_speed = PCI_SPEED_133MHz_PCIX_533;
1320 break;
1321 case 0xe:
1322 case 0xf:
1323 default:
1324 bus_speed = PCI_SPEED_UNKNOWN;
1325 break;
1326 }
1327 } else {
1328 /* In the case where pi is undefined, default it to 1 */
1329 switch (sec_bus_status & 0x0007) {
1330 case 0:
1331 bus_speed = PCI_SPEED_33MHz;
1332 break;
1333 case 1:
1334 bus_speed = PCI_SPEED_66MHz;
1335 break;
1336 case 2:
1337 bus_speed = PCI_SPEED_66MHz_PCIX;
1338 break;
1339 case 3:
1340 bus_speed = PCI_SPEED_100MHz_PCIX;
1341 break;
1342 case 4:
1343 bus_speed = PCI_SPEED_133MHz_PCIX;
1344 break;
1345 case 5:
1346 bus_speed = PCI_SPEED_UNKNOWN; /* Reserved */
1347 break;
1348 case 6:
1349 bus_speed = PCI_SPEED_UNKNOWN; /* Reserved */
1350 break;
1351 case 7:
1352 bus_speed = PCI_SPEED_UNKNOWN; /* Reserved */
1353 break;
1354 default:
1355 bus_speed = PCI_SPEED_UNKNOWN;
1356 break;
1357 }
1358 }
1359
1360 *value = bus_speed;
1361 dbg("Current bus speed = %d\n", bus_speed);
1362 DBG_LEAVE_ROUTINE
1363 return retval;
1364}
1365
1366static struct hpc_ops shpchp_hpc_ops = {
1367 .power_on_slot = hpc_power_on_slot,
1368 .slot_enable = hpc_slot_enable,
1369 .slot_disable = hpc_slot_disable,
1370 .enable_all_slots = hpc_enable_all_slots,
1371 .pwr_on_all_slots = hpc_pwr_on_all_slots,
1372 .set_bus_speed_mode = hpc_set_bus_speed_mode,
1373 .set_attention_status = hpc_set_attention_status,
1374 .get_power_status = hpc_get_power_status,
1375 .get_attention_status = hpc_get_attention_status,
1376 .get_latch_status = hpc_get_latch_status,
1377 .get_adapter_status = hpc_get_adapter_status,
1378
1379 .get_max_bus_speed = hpc_get_max_bus_speed,
1380 .get_cur_bus_speed = hpc_get_cur_bus_speed,
1381 .get_adapter_speed = hpc_get_adapter_speed,
1382 .get_mode1_ECC_cap = hpc_get_mode1_ECC_cap,
1383 .get_prog_int = hpc_get_prog_int,
1384
1385 .query_power_fault = hpc_query_power_fault,
1386 .green_led_on = hpc_set_green_led_on,
1387 .green_led_off = hpc_set_green_led_off,
1388 .green_led_blink = hpc_set_green_led_blink,
1389
1390 .release_ctlr = hpc_release_ctlr,
1391 .check_cmd_status = hpc_check_cmd_status,
1392};
1393
1394int shpc_init(struct controller * ctrl,
1395 struct pci_dev * pdev,
1396 php_intr_callback_t attention_button_callback,
1397 php_intr_callback_t switch_change_callback,
1398 php_intr_callback_t presence_change_callback,
1399 php_intr_callback_t power_fault_callback)
1400{
1401 struct php_ctlr_state_s *php_ctlr, *p;
1402 void *instance_id = ctrl;
1403 int rc;
1404 u8 hp_slot;
1405 static int first = 1;
1406 u32 shpc_cap_offset, shpc_base_offset;
1407 u32 tempdword, slot_reg;
1408 u16 vendor_id, device_id;
1409 u8 i;
1410
1411 DBG_ENTER_ROUTINE
1412
1413 spin_lock_init(&list_lock);
1414 php_ctlr = (struct php_ctlr_state_s *) kmalloc(sizeof(struct php_ctlr_state_s), GFP_KERNEL);
1415
1416 if (!php_ctlr) { /* allocate controller state data */
1417 err("%s: HPC controller memory allocation error!\n", __FUNCTION__);
1418 goto abort;
1419 }
1420
1421 memset(php_ctlr, 0, sizeof(struct php_ctlr_state_s));
1422
1423 php_ctlr->pci_dev = pdev; /* save pci_dev in context */
1424
1425 rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id);
1426 dbg("%s: Vendor ID: %x\n",__FUNCTION__, vendor_id);
1427 if (rc) {
1428 err("%s: unable to read PCI configuration data\n", __FUNCTION__);
1429 goto abort_free_ctlr;
1430 }
1431
1432 rc = pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id);
1433 dbg("%s: Device ID: %x\n",__FUNCTION__, device_id);
1434 if (rc) {
1435 err("%s: unable to read PCI configuration data\n", __FUNCTION__);
1436 goto abort_free_ctlr;
1437 }
1438
1439 if ((vendor_id == PCI_VENDOR_ID_AMD) || (device_id == PCI_DEVICE_ID_AMD_GOLAM_7450)) {
1440 shpc_base_offset = 0; /* amd shpc driver doesn't use this; assume 0 */
1441 } else {
1442 if ((shpc_cap_offset = pci_find_capability(pdev, PCI_CAP_ID_SHPC)) == 0) {
1443 err("%s : shpc_cap_offset == 0\n", __FUNCTION__);
1444 goto abort_free_ctlr;
1445 }
1446 dbg("%s: shpc_cap_offset = %x\n", __FUNCTION__, shpc_cap_offset);
1447
1448 rc = pci_write_config_byte(pdev, (u8)shpc_cap_offset + DWORD_SELECT , BASE_OFFSET);
1449 if (rc) {
1450 err("%s : pci_word_config_byte failed\n", __FUNCTION__);
1451 goto abort_free_ctlr;
1452 }
1453
1454 rc = pci_read_config_dword(pdev, (u8)shpc_cap_offset + DWORD_DATA, &shpc_base_offset);
1455 if (rc) {
1456 err("%s : pci_read_config_dword failed\n", __FUNCTION__);
1457 goto abort_free_ctlr;
1458 }
1459
1460 for (i = 0; i <= 14; i++) {
1461 rc = pci_write_config_byte(pdev, (u8)shpc_cap_offset + DWORD_SELECT , i);
1462 if (rc) {
1463 err("%s : pci_word_config_byte failed\n", __FUNCTION__);
1464 goto abort_free_ctlr;
1465 }
1466
1467 rc = pci_read_config_dword(pdev, (u8)shpc_cap_offset + DWORD_DATA, &tempdword);
1468 if (rc) {
1469 err("%s : pci_read_config_dword failed\n", __FUNCTION__);
1470 goto abort_free_ctlr;
1471 }
1472 dbg("%s: offset %d: tempdword %x\n", __FUNCTION__,i, tempdword);
1473 }
1474 }
1475
1476 if (first) {
1477 spin_lock_init(&hpc_event_lock);
1478 first = 0;
1479 }
1480
1481 dbg("pdev = %p: b:d:f:irq=0x%x:%x:%x:%x\n", pdev, pdev->bus->number, PCI_SLOT(pdev->devfn),
1482 PCI_FUNC(pdev->devfn), pdev->irq);
1483 for ( rc = 0; rc < DEVICE_COUNT_RESOURCE; rc++)
1484 if (pci_resource_len(pdev, rc) > 0)
1485 dbg("pci resource[%d] start=0x%lx(len=0x%lx), shpc_base_offset %x\n", rc,
1486 pci_resource_start(pdev, rc), pci_resource_len(pdev, rc), shpc_base_offset);
1487
1488 info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n", pdev->vendor, pdev->device, pdev->subsystem_vendor,
1489 pdev->subsystem_device);
1490
1491 if (pci_enable_device(pdev))
1492 goto abort_free_ctlr;
1493
1494 if (!request_mem_region(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0), MY_NAME)) {
1495 err("%s: cannot reserve MMIO region\n", __FUNCTION__);
1496 goto abort_free_ctlr;
1497 }
1498
1499 php_ctlr->creg = ioremap(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0));
1500 if (!php_ctlr->creg) {
1501 err("%s: cannot remap MMIO region %lx @ %lx\n", __FUNCTION__, pci_resource_len(pdev, 0),
1502 pci_resource_start(pdev, 0) + shpc_base_offset);
1503 release_mem_region(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0));
1504 goto abort_free_ctlr;
1505 }
1506 dbg("%s: php_ctlr->creg %p\n", __FUNCTION__, php_ctlr->creg);
1507 dbg("%s: physical addr %p\n", __FUNCTION__, (void*)pci_resource_start(pdev, 0));
1508
1509 init_MUTEX(&ctrl->crit_sect);
1510 /* Setup wait queue */
1511 init_waitqueue_head(&ctrl->queue);
1512
1513 /* Find the IRQ */
1514 php_ctlr->irq = pdev->irq;
1515 dbg("HPC interrupt = %d\n", php_ctlr->irq);
1516
1517 /* Save interrupt callback info */
1518 php_ctlr->attention_button_callback = attention_button_callback;
1519 php_ctlr->switch_change_callback = switch_change_callback;
1520 php_ctlr->presence_change_callback = presence_change_callback;
1521 php_ctlr->power_fault_callback = power_fault_callback;
1522 php_ctlr->callback_instance_id = instance_id;
1523
1524 /* Return PCI Controller Info */
1525 php_ctlr->slot_device_offset = (readl(php_ctlr->creg + SLOT_CONFIG) & FIRST_DEV_NUM ) >> 8;
1526 php_ctlr->num_slots = readl(php_ctlr->creg + SLOT_CONFIG) & SLOT_NUM;
1527 dbg("%s: slot_device_offset %x\n", __FUNCTION__, php_ctlr->slot_device_offset);
1528 dbg("%s: num_slots %x\n", __FUNCTION__, php_ctlr->num_slots);
1529
1530 /* Mask Global Interrupt Mask & Command Complete Interrupt Mask */
1531 tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1532 dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword);
1533 tempdword = 0x0003000f;
1534 writel(tempdword, php_ctlr->creg + SERR_INTR_ENABLE);
1535 tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1536 dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword);
1537
1538 /* Mask the MRL sensor SERR Mask of individual slot in
1539 * Slot SERR-INT Mask & clear all the existing event if any
1540 */
1541 for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) {
1542 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*hp_slot );
1543 dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__,
1544 hp_slot, slot_reg);
1545 tempdword = 0xffff3fff;
1546 writel(tempdword, php_ctlr->creg + SLOT1 + (4*hp_slot));
1547 }
1548
1549 if (shpchp_poll_mode) {/* Install interrupt polling code */
1550 /* Install and start the interrupt polling timer */
1551 init_timer(&php_ctlr->int_poll_timer);
1552 start_int_poll_timer( php_ctlr, 10 ); /* start with 10 second delay */
1553 } else {
1554 /* Installs the interrupt handler */
1555 rc = pci_enable_msi(pdev);
1556 if (rc) {
1557 info("Can't get msi for the hotplug controller\n");
1558 info("Use INTx for the hotplug controller\n");
1559 dbg("%s: rc = %x\n", __FUNCTION__, rc);
1560 } else
1561 php_ctlr->irq = pdev->irq;
1562
1563 rc = request_irq(php_ctlr->irq, shpc_isr, SA_SHIRQ, MY_NAME, (void *) ctrl);
1564 dbg("%s: request_irq %d for hpc%d (returns %d)\n", __FUNCTION__, php_ctlr->irq, ctlr_seq_num, rc);
1565 if (rc) {
1566 err("Can't get irq %d for the hotplug controller\n", php_ctlr->irq);
1567 goto abort_free_ctlr;
1568 }
1569 /* Execute OSHP method here */
1570 }
1571 dbg("%s: Before adding HPC to HPC list\n", __FUNCTION__);
1572
1573 /* Add this HPC instance into the HPC list */
1574 spin_lock(&list_lock);
1575 if (php_ctlr_list_head == 0) {
1576 php_ctlr_list_head = php_ctlr;
1577 p = php_ctlr_list_head;
1578 p->pnext = NULL;
1579 } else {
1580 p = php_ctlr_list_head;
1581
1582 while (p->pnext)
1583 p = p->pnext;
1584
1585 p->pnext = php_ctlr;
1586 }
1587 spin_unlock(&list_lock);
1588
1589
1590 ctlr_seq_num++;
1591 ctrl->hpc_ctlr_handle = php_ctlr;
1592 ctrl->hpc_ops = &shpchp_hpc_ops;
1593
1594 for (hp_slot = 0; hp_slot < php_ctlr->num_slots; hp_slot++) {
1595 slot_reg = readl(php_ctlr->creg + SLOT1 + 4*hp_slot );
1596 dbg("%s: Default Logical Slot Register %d value %x\n", __FUNCTION__,
1597 hp_slot, slot_reg);
1598 tempdword = 0xe01f3fff;
1599 writel(tempdword, php_ctlr->creg + SLOT1 + (4*hp_slot));
1600 }
1601 if (!shpchp_poll_mode) {
1602 /* Unmask all general input interrupts and SERR */
1603 tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1604 tempdword = 0x0000000a;
1605 writel(tempdword, php_ctlr->creg + SERR_INTR_ENABLE);
1606 tempdword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
1607 dbg("%s: SERR_INTR_ENABLE = %x\n", __FUNCTION__, tempdword);
1608 }
1609
1610 dbg("%s: Leaving shpc_init\n", __FUNCTION__);
1611 DBG_LEAVE_ROUTINE
1612 return 0;
1613
1614 /* We end up here for the many possible ways to fail this API. */
1615abort_free_ctlr:
1616 kfree(php_ctlr);
1617abort:
1618 DBG_LEAVE_ROUTINE
1619 return -1;
1620}
Linux 6.x block layer and io_uring tree(s)