Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * IBM Hot Plug Controller Driver | |
3 | * | |
4 | * Written By: Chuck Cole, Jyoti Shah, Tong Yu, Irene Zubarev, IBM Corporation | |
5 | * | |
6 | * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com) | |
7 | * Copyright (C) 2001-2003 IBM Corp. | |
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 | * | |
26 | * Send feedback to <gregkh@us.ibm.com> | |
27 | * | |
28 | */ | |
29 | ||
30 | #include <linux/init.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/pci.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/wait.h> | |
1da177e4 | 37 | #include "../pci.h" |
fb9aa6f1 | 38 | #include "../../../arch/x86/pci/pci.h" /* for struct irq_routing_table */ |
1da177e4 LT |
39 | #include "ibmphp.h" |
40 | ||
41 | #define attn_on(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNON) | |
42 | #define attn_off(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNOFF) | |
43 | #define attn_LED_blink(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_BLINKLED) | |
44 | #define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot (sl, READ_REVLEVEL, rev) | |
45 | #define get_hpc_options(sl, opt) ibmphp_hpc_readslot (sl, READ_HPCOPTIONS, opt) | |
46 | ||
47 | #define DRIVER_VERSION "0.6" | |
48 | #define DRIVER_DESC "IBM Hot Plug PCI Controller Driver" | |
49 | ||
50 | int ibmphp_debug; | |
51 | ||
52 | static int debug; | |
53 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
54 | MODULE_PARM_DESC (debug, "Debugging mode enabled or not"); | |
55 | MODULE_LICENSE ("GPL"); | |
56 | MODULE_DESCRIPTION (DRIVER_DESC); | |
57 | ||
58 | struct pci_bus *ibmphp_pci_bus; | |
59 | static int max_slots; | |
60 | ||
61 | static int irqs[16]; /* PIC mode IRQ's we're using so far (in case MPS | |
62 | * tables don't provide default info for empty slots */ | |
63 | ||
64 | static int init_flag; | |
65 | ||
66 | /* | |
67 | static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8); | |
68 | ||
69 | static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value) | |
70 | { | |
71 | return get_max_adapter_speed_1 (hs, value, 1); | |
72 | } | |
73 | */ | |
74 | static inline int get_cur_bus_info(struct slot **sl) | |
75 | { | |
76 | int rc = 1; | |
77 | struct slot * slot_cur = *sl; | |
78 | ||
79 | debug("options = %x\n", slot_cur->ctrl->options); | |
80 | debug("revision = %x\n", slot_cur->ctrl->revision); | |
81 | ||
82 | if (READ_BUS_STATUS(slot_cur->ctrl)) | |
83 | rc = ibmphp_hpc_readslot(slot_cur, READ_BUSSTATUS, NULL); | |
84 | ||
85 | if (rc) | |
86 | return rc; | |
87 | ||
88 | slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED(slot_cur->busstatus); | |
89 | if (READ_BUS_MODE(slot_cur->ctrl)) | |
90 | slot_cur->bus_on->current_bus_mode = | |
91 | CURRENT_BUS_MODE(slot_cur->busstatus); | |
92 | else | |
93 | slot_cur->bus_on->current_bus_mode = 0xFF; | |
94 | ||
95 | debug("busstatus = %x, bus_speed = %x, bus_mode = %x\n", | |
96 | slot_cur->busstatus, | |
97 | slot_cur->bus_on->current_speed, | |
98 | slot_cur->bus_on->current_bus_mode); | |
99 | ||
100 | *sl = slot_cur; | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static inline int slot_update(struct slot **sl) | |
105 | { | |
106 | int rc; | |
107 | rc = ibmphp_hpc_readslot(*sl, READ_ALLSTAT, NULL); | |
108 | if (rc) | |
109 | return rc; | |
110 | if (!init_flag) | |
111 | rc = get_cur_bus_info(sl); | |
112 | return rc; | |
113 | } | |
114 | ||
115 | static int __init get_max_slots (void) | |
116 | { | |
117 | struct slot * slot_cur; | |
118 | struct list_head * tmp; | |
119 | u8 slot_count = 0; | |
120 | ||
121 | list_for_each(tmp, &ibmphp_slot_head) { | |
122 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
123 | /* sometimes the hot-pluggable slots start with 4 (not always from 1) */ | |
124 | slot_count = max(slot_count, slot_cur->number); | |
125 | } | |
126 | return slot_count; | |
127 | } | |
128 | ||
129 | /* This routine will put the correct slot->device information per slot. It's | |
130 | * called from initialization of the slot structures. It will also assign | |
131 | * interrupt numbers per each slot. | |
132 | * Parameters: struct slot | |
133 | * Returns 0 or errors | |
134 | */ | |
135 | int ibmphp_init_devno(struct slot **cur_slot) | |
136 | { | |
137 | struct irq_routing_table *rtable; | |
138 | int len; | |
139 | int loop; | |
140 | int i; | |
141 | ||
142 | rtable = pcibios_get_irq_routing_table(); | |
143 | if (!rtable) { | |
144 | err("no BIOS routing table...\n"); | |
145 | return -ENOMEM; | |
146 | } | |
147 | ||
148 | len = (rtable->size - sizeof(struct irq_routing_table)) / | |
149 | sizeof(struct irq_info); | |
150 | ||
151 | if (!len) | |
152 | return -1; | |
153 | for (loop = 0; loop < len; loop++) { | |
154 | if ((*cur_slot)->number == rtable->slots[loop].slot) { | |
155 | if ((*cur_slot)->bus == rtable->slots[loop].bus) { | |
156 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); | |
157 | for (i = 0; i < 4; i++) | |
158 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
159 | (int) (*cur_slot)->device, i); | |
160 | ||
161 | debug("(*cur_slot)->irq[0] = %x\n", | |
162 | (*cur_slot)->irq[0]); | |
163 | debug("(*cur_slot)->irq[1] = %x\n", | |
164 | (*cur_slot)->irq[1]); | |
165 | debug("(*cur_slot)->irq[2] = %x\n", | |
166 | (*cur_slot)->irq[2]); | |
167 | debug("(*cur_slot)->irq[3] = %x\n", | |
168 | (*cur_slot)->irq[3]); | |
169 | ||
170 | debug("rtable->exlusive_irqs = %x\n", | |
171 | rtable->exclusive_irqs); | |
172 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", | |
173 | rtable->slots[loop].irq[0].bitmap); | |
174 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", | |
175 | rtable->slots[loop].irq[1].bitmap); | |
176 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", | |
177 | rtable->slots[loop].irq[2].bitmap); | |
178 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", | |
179 | rtable->slots[loop].irq[3].bitmap); | |
180 | ||
181 | debug("rtable->slots[loop].irq[0].link = %x\n", | |
182 | rtable->slots[loop].irq[0].link); | |
183 | debug("rtable->slots[loop].irq[1].link = %x\n", | |
184 | rtable->slots[loop].irq[1].link); | |
185 | debug("rtable->slots[loop].irq[2].link = %x\n", | |
186 | rtable->slots[loop].irq[2].link); | |
187 | debug("rtable->slots[loop].irq[3].link = %x\n", | |
188 | rtable->slots[loop].irq[3].link); | |
189 | debug("end of init_devno\n"); | |
190 | return 0; | |
191 | } | |
192 | } | |
193 | } | |
194 | ||
195 | return -1; | |
196 | } | |
197 | ||
198 | static inline int power_on(struct slot *slot_cur) | |
199 | { | |
200 | u8 cmd = HPC_SLOT_ON; | |
201 | int retval; | |
202 | ||
203 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
204 | if (retval) { | |
205 | err("power on failed\n"); | |
206 | return retval; | |
207 | } | |
208 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
209 | err("command not completed successfully in power_on\n"); | |
210 | return -EIO; | |
211 | } | |
212 | msleep(3000); /* For ServeRAID cards, and some 66 PCI */ | |
213 | return 0; | |
214 | } | |
215 | ||
216 | static inline int power_off(struct slot *slot_cur) | |
217 | { | |
218 | u8 cmd = HPC_SLOT_OFF; | |
219 | int retval; | |
220 | ||
221 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
222 | if (retval) { | |
223 | err("power off failed\n"); | |
224 | return retval; | |
225 | } | |
226 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
227 | err("command not completed successfully in power_off\n"); | |
228 | retval = -EIO; | |
229 | } | |
230 | return retval; | |
231 | } | |
232 | ||
233 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value) | |
234 | { | |
235 | int rc = 0; | |
236 | struct slot *pslot; | |
072888fa | 237 | u8 cmd = 0x00; /* avoid compiler warning */ |
1da177e4 LT |
238 | |
239 | debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", | |
240 | (ulong) hotplug_slot, value); | |
241 | ibmphp_lock_operations(); | |
072888fa | 242 | |
1da177e4 LT |
243 | |
244 | if (hotplug_slot) { | |
245 | switch (value) { | |
246 | case HPC_SLOT_ATTN_OFF: | |
247 | cmd = HPC_SLOT_ATTNOFF; | |
248 | break; | |
249 | case HPC_SLOT_ATTN_ON: | |
250 | cmd = HPC_SLOT_ATTNON; | |
251 | break; | |
252 | case HPC_SLOT_ATTN_BLINK: | |
253 | cmd = HPC_SLOT_BLINKLED; | |
254 | break; | |
255 | default: | |
256 | rc = -ENODEV; | |
257 | err("set_attention_status - Error : invalid input [%x]\n", | |
258 | value); | |
259 | break; | |
260 | } | |
261 | if (rc == 0) { | |
262 | pslot = hotplug_slot->private; | |
263 | if (pslot) | |
264 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
265 | else | |
266 | rc = -ENODEV; | |
267 | } | |
268 | } else | |
269 | rc = -ENODEV; | |
270 | ||
271 | ibmphp_unlock_operations(); | |
272 | ||
273 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
274 | return rc; | |
275 | } | |
276 | ||
277 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
278 | { | |
279 | int rc = -ENODEV; | |
280 | struct slot *pslot; | |
281 | struct slot myslot; | |
282 | ||
283 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
284 | (ulong) hotplug_slot, (ulong) value); | |
285 | ||
286 | ibmphp_lock_operations(); | |
9df7fde5 | 287 | if (hotplug_slot) { |
1da177e4 LT |
288 | pslot = hotplug_slot->private; |
289 | if (pslot) { | |
290 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
291 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
292 | &(myslot.status)); | |
293 | if (!rc) | |
294 | rc = ibmphp_hpc_readslot(pslot, | |
295 | READ_EXTSLOTSTATUS, | |
296 | &(myslot.ext_status)); | |
297 | if (!rc) | |
298 | *value = SLOT_ATTN(myslot.status, | |
299 | myslot.ext_status); | |
300 | } | |
301 | } | |
302 | ||
303 | ibmphp_unlock_operations(); | |
304 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
305 | return rc; | |
306 | } | |
307 | ||
308 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
309 | { | |
310 | int rc = -ENODEV; | |
311 | struct slot *pslot; | |
312 | struct slot myslot; | |
313 | ||
314 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
315 | (ulong) hotplug_slot, (ulong) value); | |
316 | ibmphp_lock_operations(); | |
9df7fde5 | 317 | if (hotplug_slot) { |
1da177e4 LT |
318 | pslot = hotplug_slot->private; |
319 | if (pslot) { | |
320 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
321 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
322 | &(myslot.status)); | |
323 | if (!rc) | |
324 | *value = SLOT_LATCH(myslot.status); | |
325 | } | |
326 | } | |
327 | ||
328 | ibmphp_unlock_operations(); | |
329 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
330 | rc, rc, *value); | |
331 | return rc; | |
332 | } | |
333 | ||
334 | ||
335 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
336 | { | |
337 | int rc = -ENODEV; | |
338 | struct slot *pslot; | |
339 | struct slot myslot; | |
340 | ||
341 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
342 | (ulong) hotplug_slot, (ulong) value); | |
343 | ibmphp_lock_operations(); | |
9df7fde5 | 344 | if (hotplug_slot) { |
1da177e4 LT |
345 | pslot = hotplug_slot->private; |
346 | if (pslot) { | |
347 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
348 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
349 | &(myslot.status)); | |
350 | if (!rc) | |
351 | *value = SLOT_PWRGD(myslot.status); | |
352 | } | |
353 | } | |
354 | ||
355 | ibmphp_unlock_operations(); | |
356 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
357 | rc, rc, *value); | |
358 | return rc; | |
359 | } | |
360 | ||
361 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value) | |
362 | { | |
363 | int rc = -ENODEV; | |
364 | struct slot *pslot; | |
365 | u8 present; | |
366 | struct slot myslot; | |
367 | ||
368 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
369 | (ulong) hotplug_slot, (ulong) value); | |
370 | ibmphp_lock_operations(); | |
9df7fde5 | 371 | if (hotplug_slot) { |
1da177e4 LT |
372 | pslot = hotplug_slot->private; |
373 | if (pslot) { | |
374 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
375 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
376 | &(myslot.status)); | |
377 | if (!rc) { | |
378 | present = SLOT_PRESENT(myslot.status); | |
379 | if (present == HPC_SLOT_EMPTY) | |
380 | *value = 0; | |
381 | else | |
382 | *value = 1; | |
383 | } | |
384 | } | |
385 | } | |
386 | ||
387 | ibmphp_unlock_operations(); | |
388 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
389 | return rc; | |
390 | } | |
391 | ||
392 | static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
393 | { | |
394 | int rc = -ENODEV; | |
395 | struct slot *pslot; | |
396 | u8 mode = 0; | |
397 | ||
398 | debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __FUNCTION__, | |
399 | hotplug_slot, value); | |
400 | ||
401 | ibmphp_lock_operations(); | |
402 | ||
9df7fde5 | 403 | if (hotplug_slot) { |
1da177e4 LT |
404 | pslot = hotplug_slot->private; |
405 | if (pslot) { | |
406 | rc = 0; | |
407 | mode = pslot->supported_bus_mode; | |
408 | *value = pslot->supported_speed; | |
409 | switch (*value) { | |
410 | case BUS_SPEED_33: | |
411 | break; | |
412 | case BUS_SPEED_66: | |
413 | if (mode == BUS_MODE_PCIX) | |
414 | *value += 0x01; | |
415 | break; | |
416 | case BUS_SPEED_100: | |
417 | case BUS_SPEED_133: | |
418 | *value = pslot->supported_speed + 0x01; | |
419 | break; | |
420 | default: | |
421 | /* Note (will need to change): there would be soon 256, 512 also */ | |
422 | rc = -ENODEV; | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
427 | ibmphp_unlock_operations(); | |
428 | debug("%s - Exit rc[%d] value[%x]\n", __FUNCTION__, rc, *value); | |
429 | return rc; | |
430 | } | |
431 | ||
432 | static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
433 | { | |
434 | int rc = -ENODEV; | |
435 | struct slot *pslot; | |
436 | u8 mode = 0; | |
437 | ||
438 | debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __FUNCTION__, | |
439 | hotplug_slot, value); | |
440 | ||
441 | ibmphp_lock_operations(); | |
442 | ||
9df7fde5 | 443 | if (hotplug_slot) { |
1da177e4 LT |
444 | pslot = hotplug_slot->private; |
445 | if (pslot) { | |
446 | rc = get_cur_bus_info(&pslot); | |
447 | if (!rc) { | |
448 | mode = pslot->bus_on->current_bus_mode; | |
449 | *value = pslot->bus_on->current_speed; | |
450 | switch (*value) { | |
451 | case BUS_SPEED_33: | |
452 | break; | |
453 | case BUS_SPEED_66: | |
454 | if (mode == BUS_MODE_PCIX) | |
455 | *value += 0x01; | |
456 | else if (mode == BUS_MODE_PCI) | |
457 | ; | |
458 | else | |
459 | *value = PCI_SPEED_UNKNOWN; | |
460 | break; | |
461 | case BUS_SPEED_100: | |
462 | case BUS_SPEED_133: | |
463 | *value += 0x01; | |
464 | break; | |
465 | default: | |
466 | /* Note of change: there would also be 256, 512 soon */ | |
467 | rc = -ENODEV; | |
468 | } | |
469 | } | |
470 | } | |
471 | } | |
472 | ||
473 | ibmphp_unlock_operations(); | |
474 | debug("%s - Exit rc[%d] value[%x]\n", __FUNCTION__, rc, *value); | |
475 | return rc; | |
476 | } | |
477 | ||
478 | /* | |
479 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 * value, u8 flag) | |
480 | { | |
481 | int rc = -ENODEV; | |
482 | struct slot *pslot; | |
483 | struct slot myslot; | |
484 | ||
485 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
486 | (ulong)hotplug_slot, (ulong) value); | |
487 | ||
488 | if (flag) | |
489 | ibmphp_lock_operations(); | |
490 | ||
491 | if (hotplug_slot && value) { | |
492 | pslot = hotplug_slot->private; | |
493 | if (pslot) { | |
494 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
495 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
496 | &(myslot.status)); | |
497 | ||
498 | if (!(SLOT_LATCH (myslot.status)) && | |
499 | (SLOT_PRESENT (myslot.status))) { | |
500 | rc = ibmphp_hpc_readslot(pslot, | |
501 | READ_EXTSLOTSTATUS, | |
502 | &(myslot.ext_status)); | |
503 | if (!rc) | |
504 | *value = SLOT_SPEED(myslot.ext_status); | |
505 | } else | |
506 | *value = MAX_ADAPTER_NONE; | |
507 | } | |
508 | } | |
509 | ||
510 | if (flag) | |
511 | ibmphp_unlock_operations(); | |
512 | ||
513 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
514 | return rc; | |
515 | } | |
516 | ||
517 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char * value) | |
518 | { | |
519 | int rc = -ENODEV; | |
520 | struct slot *pslot = NULL; | |
521 | ||
522 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
523 | ||
524 | ibmphp_lock_operations(); | |
525 | ||
526 | if (hotplug_slot) { | |
527 | pslot = hotplug_slot->private; | |
528 | if (pslot) { | |
529 | rc = 0; | |
530 | snprintf(value, 100, "Bus %x", pslot->bus); | |
531 | } | |
532 | } else | |
533 | rc = -ENODEV; | |
534 | ||
535 | ibmphp_unlock_operations(); | |
536 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
537 | return rc; | |
538 | } | |
539 | */ | |
540 | ||
541 | /**************************************************************************** | |
542 | * This routine will initialize the ops data structure used in the validate | |
543 | * function. It will also power off empty slots that are powered on since BIOS | |
544 | * leaves those on, albeit disconnected | |
545 | ****************************************************************************/ | |
546 | static int __init init_ops(void) | |
547 | { | |
548 | struct slot *slot_cur; | |
549 | struct list_head *tmp; | |
550 | int retval; | |
551 | int rc; | |
552 | ||
553 | list_for_each(tmp, &ibmphp_slot_head) { | |
554 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
555 | ||
556 | if (!slot_cur) | |
557 | return -ENODEV; | |
558 | ||
559 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", | |
560 | slot_cur->number); | |
561 | if (slot_cur->ctrl->revision == 0xFF) | |
562 | if (get_ctrl_revision(slot_cur, | |
563 | &slot_cur->ctrl->revision)) | |
564 | return -1; | |
565 | ||
566 | if (slot_cur->bus_on->current_speed == 0xFF) | |
567 | if (get_cur_bus_info(&slot_cur)) | |
568 | return -1; | |
569 | ||
570 | if (slot_cur->ctrl->options == 0xFF) | |
571 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
572 | return -1; | |
573 | ||
574 | retval = slot_update(&slot_cur); | |
575 | if (retval) | |
576 | return retval; | |
577 | ||
578 | debug("status = %x\n", slot_cur->status); | |
579 | debug("ext_status = %x\n", slot_cur->ext_status); | |
580 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
581 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
582 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
583 | ||
584 | if ((SLOT_PWRGD(slot_cur->status)) && | |
585 | !(SLOT_PRESENT(slot_cur->status)) && | |
586 | !(SLOT_LATCH(slot_cur->status))) { | |
587 | debug("BEFORE POWER OFF COMMAND\n"); | |
588 | rc = power_off(slot_cur); | |
589 | if (rc) | |
590 | return rc; | |
591 | ||
592 | /* retval = slot_update(&slot_cur); | |
593 | * if (retval) | |
594 | * return retval; | |
595 | * ibmphp_update_slot_info(slot_cur); | |
596 | */ | |
597 | } | |
598 | } | |
599 | init_flag = 0; | |
600 | return 0; | |
601 | } | |
602 | ||
603 | /* This operation will check whether the slot is within the bounds and | |
604 | * the operation is valid to perform on that slot | |
605 | * Parameters: slot, operation | |
606 | * Returns: 0 or error codes | |
607 | */ | |
608 | static int validate(struct slot *slot_cur, int opn) | |
609 | { | |
610 | int number; | |
611 | int retval; | |
612 | ||
613 | if (!slot_cur) | |
614 | return -ENODEV; | |
615 | number = slot_cur->number; | |
616 | if ((number > max_slots) || (number < 0)) | |
617 | return -EBADSLT; | |
618 | debug("slot_number in validate is %d\n", slot_cur->number); | |
619 | ||
620 | retval = slot_update(&slot_cur); | |
621 | if (retval) | |
622 | return retval; | |
623 | ||
624 | switch (opn) { | |
625 | case ENABLE: | |
626 | if (!(SLOT_PWRGD(slot_cur->status)) && | |
627 | (SLOT_PRESENT(slot_cur->status)) && | |
628 | !(SLOT_LATCH(slot_cur->status))) | |
629 | return 0; | |
630 | break; | |
631 | case DISABLE: | |
632 | if ((SLOT_PWRGD(slot_cur->status)) && | |
633 | (SLOT_PRESENT(slot_cur->status)) && | |
634 | !(SLOT_LATCH(slot_cur->status))) | |
635 | return 0; | |
636 | break; | |
637 | default: | |
638 | break; | |
639 | } | |
640 | err("validate failed....\n"); | |
641 | return -EINVAL; | |
642 | } | |
643 | ||
644 | /**************************************************************************** | |
645 | * This routine is for updating the data structures in the hotplug core | |
646 | * Parameters: struct slot | |
647 | * Returns: 0 or error | |
648 | ****************************************************************************/ | |
649 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
650 | { | |
651 | struct hotplug_slot_info *info; | |
652 | int rc; | |
653 | u8 bus_speed; | |
654 | u8 mode; | |
655 | ||
656 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
657 | if (!info) { | |
658 | err("out of system memory\n"); | |
659 | return -ENOMEM; | |
660 | } | |
661 | ||
662 | info->power_status = SLOT_PWRGD(slot_cur->status); | |
663 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
664 | slot_cur->ext_status); | |
665 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
666 | if (!SLOT_PRESENT(slot_cur->status)) { | |
667 | info->adapter_status = 0; | |
668 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ | |
669 | } else { | |
670 | info->adapter_status = 1; | |
671 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, | |
672 | &info->max_adapter_speed_status, 0); */ | |
673 | } | |
674 | ||
675 | bus_speed = slot_cur->bus_on->current_speed; | |
676 | mode = slot_cur->bus_on->current_bus_mode; | |
677 | ||
678 | switch (bus_speed) { | |
679 | case BUS_SPEED_33: | |
680 | break; | |
681 | case BUS_SPEED_66: | |
682 | if (mode == BUS_MODE_PCIX) | |
683 | bus_speed += 0x01; | |
684 | else if (mode == BUS_MODE_PCI) | |
685 | ; | |
686 | else | |
687 | bus_speed = PCI_SPEED_UNKNOWN; | |
688 | break; | |
689 | case BUS_SPEED_100: | |
690 | case BUS_SPEED_133: | |
691 | bus_speed += 0x01; | |
692 | break; | |
693 | default: | |
694 | bus_speed = PCI_SPEED_UNKNOWN; | |
695 | } | |
696 | ||
697 | info->cur_bus_speed = bus_speed; | |
698 | info->max_bus_speed = slot_cur->hotplug_slot->info->max_bus_speed; | |
699 | // To do: bus_names | |
700 | ||
701 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); | |
702 | kfree(info); | |
703 | return rc; | |
704 | } | |
705 | ||
706 | ||
707 | /****************************************************************************** | |
708 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
709 | * is called from visit routines | |
710 | ******************************************************************************/ | |
711 | ||
712 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
713 | { | |
714 | struct pci_func *func_cur; | |
715 | struct slot *slot_cur; | |
716 | struct list_head * tmp; | |
717 | list_for_each(tmp, &ibmphp_slot_head) { | |
718 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
719 | if (slot_cur->func) { | |
720 | func_cur = slot_cur->func; | |
721 | while (func_cur) { | |
722 | if ((func_cur->busno == busno) && | |
723 | (func_cur->device == device) && | |
724 | (func_cur->function == function)) | |
725 | return func_cur; | |
726 | func_cur = func_cur->next; | |
727 | } | |
728 | } | |
729 | } | |
730 | return NULL; | |
731 | } | |
732 | ||
733 | /************************************************************* | |
734 | * This routine frees up memory used by struct slot, including | |
735 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
736 | * and deregistering from the hotplug core | |
737 | *************************************************************/ | |
738 | static void free_slots(void) | |
739 | { | |
740 | struct slot *slot_cur; | |
741 | struct list_head * tmp; | |
742 | struct list_head * next; | |
743 | ||
744 | debug("%s -- enter\n", __FUNCTION__); | |
745 | ||
746 | list_for_each_safe(tmp, next, &ibmphp_slot_head) { | |
747 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
748 | pci_hp_deregister(slot_cur->hotplug_slot); | |
749 | } | |
750 | debug("%s -- exit\n", __FUNCTION__); | |
751 | } | |
752 | ||
753 | static void ibm_unconfigure_device(struct pci_func *func) | |
754 | { | |
755 | struct pci_dev *temp; | |
756 | u8 j; | |
757 | ||
758 | debug("inside %s\n", __FUNCTION__); | |
759 | debug("func->device = %x, func->function = %x\n", | |
760 | func->device, func->function); | |
761 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
762 | ||
763 | for (j = 0; j < 0x08; j++) { | |
764 | temp = pci_find_slot(func->busno, (func->device << 3) | j); | |
765 | if (temp) | |
766 | pci_remove_bus_device(temp); | |
767 | } | |
768 | } | |
769 | ||
770 | /* | |
771 | * The following function is to fix kernel bug regarding | |
772 | * getting bus entries, here we manually add those primary | |
773 | * bus entries to kernel bus structure whenever apply | |
774 | */ | |
775 | static u8 bus_structure_fixup(u8 busno) | |
776 | { | |
777 | struct pci_bus *bus; | |
778 | struct pci_dev *dev; | |
779 | u16 l; | |
780 | ||
781 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
782 | return 1; | |
783 | ||
784 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
785 | if (!bus) { | |
786 | err("%s - out of memory\n", __FUNCTION__); | |
787 | return 1; | |
788 | } | |
789 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
790 | if (!dev) { | |
791 | kfree(bus); | |
792 | err("%s - out of memory\n", __FUNCTION__); | |
793 | return 1; | |
794 | } | |
795 | ||
796 | bus->number = busno; | |
797 | bus->ops = ibmphp_pci_bus->ops; | |
798 | dev->bus = bus; | |
799 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
800 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
801 | (l != 0x0000) && (l != 0xffff)) { | |
802 | debug("%s - Inside bus_struture_fixup()\n", | |
803 | __FUNCTION__); | |
804 | pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); | |
805 | break; | |
806 | } | |
807 | } | |
808 | ||
809 | kfree(dev); | |
810 | kfree(bus); | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | static int ibm_configure_device(struct pci_func *func) | |
816 | { | |
817 | unsigned char bus; | |
818 | struct pci_bus *child; | |
819 | int num; | |
820 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
821 | for bridged devices primarily */ | |
822 | ||
823 | if (!(bus_structure_fixup(func->busno))) | |
824 | flag = 1; | |
825 | if (func->dev == NULL) | |
826 | func->dev = pci_find_slot(func->busno, | |
827 | PCI_DEVFN(func->device, func->function)); | |
828 | ||
829 | if (func->dev == NULL) { | |
830 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
831 | if (!bus) | |
832 | return 0; | |
833 | ||
834 | num = pci_scan_slot(bus, | |
835 | PCI_DEVFN(func->device, func->function)); | |
836 | if (num) | |
837 | pci_bus_add_devices(bus); | |
838 | ||
839 | func->dev = pci_find_slot(func->busno, | |
840 | PCI_DEVFN(func->device, func->function)); | |
841 | if (func->dev == NULL) { | |
842 | err("ERROR... : pci_dev still NULL\n"); | |
843 | return 0; | |
844 | } | |
845 | } | |
846 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
847 | pci_read_config_byte(func->dev, PCI_SECONDARY_BUS, &bus); | |
848 | child = pci_add_new_bus(func->dev->bus, func->dev, bus); | |
849 | pci_do_scan_bus(child); | |
850 | } | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | /******************************************************* | |
856 | * Returns whether the bus is empty or not | |
857 | *******************************************************/ | |
858 | static int is_bus_empty(struct slot * slot_cur) | |
859 | { | |
860 | int rc; | |
861 | struct slot * tmp_slot; | |
862 | u8 i = slot_cur->bus_on->slot_min; | |
863 | ||
864 | while (i <= slot_cur->bus_on->slot_max) { | |
865 | if (i == slot_cur->number) { | |
866 | i++; | |
867 | continue; | |
868 | } | |
869 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
870 | if (!tmp_slot) | |
871 | return 0; | |
872 | rc = slot_update(&tmp_slot); | |
873 | if (rc) | |
874 | return 0; | |
875 | if (SLOT_PRESENT(tmp_slot->status) && | |
876 | SLOT_PWRGD(tmp_slot->status)) | |
877 | return 0; | |
878 | i++; | |
879 | } | |
880 | return 1; | |
881 | } | |
882 | ||
883 | /*********************************************************** | |
884 | * If the HPC permits and the bus currently empty, tries to set the | |
885 | * bus speed and mode at the maximum card and bus capability | |
886 | * Parameters: slot | |
887 | * Returns: bus is set (0) or error code | |
888 | ***********************************************************/ | |
889 | static int set_bus(struct slot * slot_cur) | |
890 | { | |
891 | int rc; | |
892 | u8 speed; | |
893 | u8 cmd = 0x0; | |
894 | int retval; | |
895 | static struct pci_device_id ciobx[] = { | |
896 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, | |
897 | { }, | |
898 | }; | |
899 | ||
900 | debug("%s - entry slot # %d\n", __FUNCTION__, slot_cur->number); | |
901 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { | |
902 | rc = slot_update(&slot_cur); | |
903 | if (rc) | |
904 | return rc; | |
905 | speed = SLOT_SPEED(slot_cur->ext_status); | |
906 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
907 | switch (speed) { | |
908 | case HPC_SLOT_SPEED_33: | |
909 | cmd = HPC_BUS_33CONVMODE; | |
910 | break; | |
911 | case HPC_SLOT_SPEED_66: | |
912 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
913 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
914 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
915 | cmd = HPC_BUS_66PCIXMODE; | |
916 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
917 | /* if max slot/bus capability is 66 pci | |
918 | and there's no bus mode mismatch, then | |
919 | the adapter supports 66 pci */ | |
920 | cmd = HPC_BUS_66CONVMODE; | |
921 | else | |
922 | cmd = HPC_BUS_33CONVMODE; | |
923 | } else { | |
924 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
925 | cmd = HPC_BUS_66CONVMODE; | |
926 | else | |
927 | cmd = HPC_BUS_33CONVMODE; | |
928 | } | |
929 | break; | |
930 | case HPC_SLOT_SPEED_133: | |
931 | switch (slot_cur->supported_speed) { | |
932 | case BUS_SPEED_33: | |
933 | cmd = HPC_BUS_33CONVMODE; | |
934 | break; | |
935 | case BUS_SPEED_66: | |
936 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
937 | cmd = HPC_BUS_66PCIXMODE; | |
938 | else | |
939 | cmd = HPC_BUS_66CONVMODE; | |
940 | break; | |
941 | case BUS_SPEED_100: | |
942 | cmd = HPC_BUS_100PCIXMODE; | |
943 | break; | |
944 | case BUS_SPEED_133: | |
945 | /* This is to take care of the bug in CIOBX chip */ | |
946 | if (pci_dev_present(ciobx)) | |
947 | ibmphp_hpc_writeslot(slot_cur, | |
948 | HPC_BUS_100PCIXMODE); | |
949 | cmd = HPC_BUS_133PCIXMODE; | |
950 | break; | |
951 | default: | |
952 | err("Wrong bus speed\n"); | |
953 | return -ENODEV; | |
954 | } | |
955 | break; | |
956 | default: | |
957 | err("wrong slot speed\n"); | |
958 | return -ENODEV; | |
959 | } | |
960 | debug("setting bus speed for slot %d, cmd %x\n", | |
961 | slot_cur->number, cmd); | |
962 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
963 | if (retval) { | |
964 | err("setting bus speed failed\n"); | |
965 | return retval; | |
966 | } | |
967 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
968 | err("command not completed successfully in set_bus\n"); | |
969 | return -EIO; | |
970 | } | |
971 | } | |
972 | /* This is for x440, once Brandon fixes the firmware, | |
973 | will not need this delay */ | |
974 | msleep(1000); | |
975 | debug("%s -Exit\n", __FUNCTION__); | |
976 | return 0; | |
977 | } | |
978 | ||
979 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
980 | * This is used in deciding whether or not to power up the slot. | |
981 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on | |
982 | * same bus) | |
983 | * Parameters: slot | |
984 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
985 | */ | |
986 | static int check_limitations(struct slot *slot_cur) | |
987 | { | |
988 | u8 i; | |
989 | struct slot * tmp_slot; | |
990 | u8 count = 0; | |
991 | u8 limitation = 0; | |
992 | ||
993 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
994 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
995 | if (!tmp_slot) | |
996 | return -ENODEV; | |
997 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
998 | !(SLOT_CONNECT(tmp_slot->status))) | |
999 | count++; | |
1000 | } | |
1001 | get_cur_bus_info(&slot_cur); | |
1002 | switch (slot_cur->bus_on->current_speed) { | |
1003 | case BUS_SPEED_33: | |
1004 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
1005 | break; | |
1006 | case BUS_SPEED_66: | |
1007 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
1008 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
1009 | else | |
1010 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
1011 | break; | |
1012 | case BUS_SPEED_100: | |
1013 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
1014 | break; | |
1015 | case BUS_SPEED_133: | |
1016 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
1017 | break; | |
1018 | } | |
1019 | ||
1020 | if ((count + 1) > limitation) | |
1021 | return -EINVAL; | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | static inline void print_card_capability(struct slot *slot_cur) | |
1026 | { | |
1027 | info("capability of the card is "); | |
1028 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) | |
1029 | info(" 133 MHz PCI-X\n"); | |
1030 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
1031 | info(" 66 MHz PCI-X\n"); | |
1032 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
1033 | info(" 66 MHz PCI\n"); | |
1034 | else | |
1035 | info(" 33 MHz PCI\n"); | |
1036 | ||
1037 | } | |
1038 | ||
1039 | /* This routine will power on the slot, configure the device(s) and find the | |
1040 | * drivers for them. | |
1041 | * Parameters: hotplug_slot | |
1042 | * Returns: 0 or failure codes | |
1043 | */ | |
1044 | static int enable_slot(struct hotplug_slot *hs) | |
1045 | { | |
1046 | int rc, i, rcpr; | |
1047 | struct slot *slot_cur; | |
1048 | u8 function; | |
1049 | struct pci_func *tmp_func; | |
1050 | ||
1051 | ibmphp_lock_operations(); | |
1052 | ||
1053 | debug("ENABLING SLOT........\n"); | |
1054 | slot_cur = hs->private; | |
1055 | ||
1056 | if ((rc = validate(slot_cur, ENABLE))) { | |
1057 | err("validate function failed\n"); | |
1058 | goto error_nopower; | |
1059 | } | |
1060 | ||
1061 | attn_LED_blink(slot_cur); | |
1062 | ||
1063 | rc = set_bus(slot_cur); | |
1064 | if (rc) { | |
1065 | err("was not able to set the bus\n"); | |
1066 | goto error_nopower; | |
1067 | } | |
1068 | ||
1069 | /*-----------------debugging------------------------------*/ | |
1070 | get_cur_bus_info(&slot_cur); | |
1071 | debug("the current bus speed right after set_bus = %x\n", | |
1072 | slot_cur->bus_on->current_speed); | |
1073 | /*----------------------------------------------------------*/ | |
1074 | ||
1075 | rc = check_limitations(slot_cur); | |
1076 | if (rc) { | |
1077 | err("Adding this card exceeds the limitations of this bus.\n"); | |
1078 | err("(i.e., >1 133MHz cards running on same bus, or " | |
3fa63c7d | 1079 | ">2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1080 | err("Try hot-adding into another bus\n"); |
1081 | rc = -EINVAL; | |
1082 | goto error_nopower; | |
1083 | } | |
1084 | ||
1085 | rc = power_on(slot_cur); | |
1086 | ||
1087 | if (rc) { | |
1088 | err("something wrong when powering up... please see below for details\n"); | |
1089 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1090 | attn_off(slot_cur); | |
1091 | attn_on(slot_cur); | |
1092 | if (slot_update(&slot_cur)) { | |
1093 | attn_off(slot_cur); | |
1094 | attn_on(slot_cur); | |
1095 | rc = -ENODEV; | |
1096 | goto exit; | |
1097 | } | |
1098 | /* Check to see the error of why it failed */ | |
1099 | if ((SLOT_POWER(slot_cur->status)) && | |
1100 | !(SLOT_PWRGD(slot_cur->status))) | |
1101 | err("power fault occurred trying to power up\n"); | |
1102 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
1103 | err("bus speed mismatch occurred. please check " | |
1104 | "current bus speed and card capability\n"); | |
1105 | print_card_capability(slot_cur); | |
1106 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
1107 | err("bus mode mismatch occurred. please check " | |
1108 | "current bus mode and card capability\n"); | |
1109 | print_card_capability(slot_cur); | |
1110 | } | |
1111 | ibmphp_update_slot_info(slot_cur); | |
1112 | goto exit; | |
1113 | } | |
1114 | debug("after power_on\n"); | |
1115 | /*-----------------------debugging---------------------------*/ | |
1116 | get_cur_bus_info(&slot_cur); | |
1117 | debug("the current bus speed right after power_on = %x\n", | |
1118 | slot_cur->bus_on->current_speed); | |
1119 | /*----------------------------------------------------------*/ | |
1120 | ||
1121 | rc = slot_update(&slot_cur); | |
1122 | if (rc) | |
1123 | goto error_power; | |
1124 | ||
1125 | rc = -EINVAL; | |
1126 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1127 | err("power fault occurred trying to power up...\n"); | |
1128 | goto error_power; | |
1129 | } | |
1130 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
1131 | err("bus speed mismatch occurred. please check current bus " | |
1132 | "speed and card capability\n"); | |
1133 | print_card_capability(slot_cur); | |
1134 | goto error_power; | |
1135 | } | |
1136 | /* Don't think this case will happen after above checks... | |
1137 | * but just in case, for paranoia sake */ | |
1138 | if (!(SLOT_POWER(slot_cur->status))) { | |
1139 | err("power on failed...\n"); | |
1140 | goto error_power; | |
1141 | } | |
1142 | ||
f5afe806 | 1143 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1144 | if (!slot_cur->func) { |
1145 | /* We cannot do update_slot_info here, since no memory for | |
1146 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1147 | err("out of system memory\n"); | |
1148 | rc = -ENOMEM; | |
1149 | goto error_power; | |
1150 | } | |
1da177e4 LT |
1151 | slot_cur->func->busno = slot_cur->bus; |
1152 | slot_cur->func->device = slot_cur->device; | |
1153 | for (i = 0; i < 4; i++) | |
1154 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1155 | ||
1156 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1157 | slot_cur->bus, slot_cur->device); | |
1158 | ||
1159 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1160 | err("configure_card was unsuccessful...\n"); | |
1161 | /* true because don't need to actually deallocate resources, | |
1162 | * just remove references */ | |
1163 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1164 | debug("after unconfigure_card\n"); | |
1165 | slot_cur->func = NULL; | |
1166 | rc = -ENOMEM; | |
1167 | goto error_power; | |
1168 | } | |
1169 | ||
1170 | function = 0x00; | |
1171 | do { | |
1172 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1173 | function++); | |
1174 | if (tmp_func && !(tmp_func->dev)) | |
1175 | ibm_configure_device(tmp_func); | |
1176 | } while (tmp_func); | |
1177 | ||
1178 | attn_off(slot_cur); | |
1179 | if (slot_update(&slot_cur)) { | |
1180 | rc = -EFAULT; | |
1181 | goto exit; | |
1182 | } | |
1183 | ibmphp_print_test(); | |
1184 | rc = ibmphp_update_slot_info(slot_cur); | |
1185 | exit: | |
1186 | ibmphp_unlock_operations(); | |
1187 | return rc; | |
1188 | ||
1189 | error_nopower: | |
1190 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1191 | attn_on(slot_cur); | |
1192 | error_cont: | |
1193 | rcpr = slot_update(&slot_cur); | |
1194 | if (rcpr) { | |
1195 | rc = rcpr; | |
1196 | goto exit; | |
1197 | } | |
1198 | ibmphp_update_slot_info(slot_cur); | |
1199 | goto exit; | |
1200 | ||
1201 | error_power: | |
1202 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1203 | attn_on(slot_cur); | |
1204 | rcpr = power_off(slot_cur); | |
1205 | if (rcpr) { | |
1206 | rc = rcpr; | |
1207 | goto exit; | |
1208 | } | |
1209 | goto error_cont; | |
1210 | } | |
1211 | ||
1212 | /************************************************************** | |
1213 | * HOT REMOVING ADAPTER CARD * | |
1214 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1215 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
1216 | DISABLE POWER , * | |
1217 | **************************************************************/ | |
1218 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1219 | { | |
1220 | struct slot *slot = hotplug_slot->private; | |
1221 | int rc; | |
1222 | ||
1223 | ibmphp_lock_operations(); | |
1224 | rc = ibmphp_do_disable_slot(slot); | |
1225 | ibmphp_unlock_operations(); | |
1226 | return rc; | |
1227 | } | |
1228 | ||
1229 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1230 | { | |
1231 | int rc; | |
1232 | u8 flag; | |
1233 | ||
1234 | debug("DISABLING SLOT...\n"); | |
1235 | ||
1236 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) { | |
1237 | return -ENODEV; | |
1238 | } | |
1239 | ||
1240 | flag = slot_cur->flag; | |
dc6712d1 | 1241 | slot_cur->flag = 1; |
1da177e4 | 1242 | |
dc6712d1 | 1243 | if (flag == 1) { |
1da177e4 LT |
1244 | rc = validate(slot_cur, DISABLE); |
1245 | /* checking if powered off already & valid slot # */ | |
1246 | if (rc) | |
1247 | goto error; | |
1248 | } | |
1249 | attn_LED_blink(slot_cur); | |
1250 | ||
1251 | if (slot_cur->func == NULL) { | |
1252 | /* We need this for fncs's that were there on bootup */ | |
f5afe806 | 1253 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1254 | if (!slot_cur->func) { |
1255 | err("out of system memory\n"); | |
1256 | rc = -ENOMEM; | |
1257 | goto error; | |
1258 | } | |
1da177e4 LT |
1259 | slot_cur->func->busno = slot_cur->bus; |
1260 | slot_cur->func->device = slot_cur->device; | |
1261 | } | |
1262 | ||
1263 | ibm_unconfigure_device(slot_cur->func); | |
1264 | ||
1265 | /* If we got here from latch suddenly opening on operating card or | |
1266 | a power fault, there's no power to the card, so cannot | |
1267 | read from it to determine what resources it occupied. This operation | |
1268 | is forbidden anyhow. The best we can do is remove it from kernel | |
1269 | lists at least */ | |
1270 | ||
1271 | if (!flag) { | |
1272 | attn_off(slot_cur); | |
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1277 | slot_cur->func = NULL; | |
1278 | debug("in disable_slot. after unconfigure_card\n"); | |
1279 | if (rc) { | |
1280 | err("could not unconfigure card.\n"); | |
1281 | goto error; | |
1282 | } | |
1283 | ||
1284 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1285 | if (rc) | |
1286 | goto error; | |
1287 | ||
1288 | attn_off(slot_cur); | |
1289 | rc = slot_update(&slot_cur); | |
1290 | if (rc) | |
1291 | goto exit; | |
1292 | ||
1293 | rc = ibmphp_update_slot_info(slot_cur); | |
1294 | ibmphp_print_test(); | |
1295 | exit: | |
1296 | return rc; | |
1297 | ||
1298 | error: | |
1299 | /* Need to turn off if was blinking b4 */ | |
1300 | attn_off(slot_cur); | |
1301 | attn_on(slot_cur); | |
1302 | if (slot_update(&slot_cur)) { | |
1303 | rc = -EFAULT; | |
1304 | goto exit; | |
1305 | } | |
1306 | if (flag) | |
1307 | ibmphp_update_slot_info(slot_cur); | |
1308 | goto exit; | |
1309 | } | |
1310 | ||
1311 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1312 | .owner = THIS_MODULE, | |
1313 | .set_attention_status = set_attention_status, | |
1314 | .enable_slot = enable_slot, | |
1315 | .disable_slot = ibmphp_disable_slot, | |
1316 | .hardware_test = NULL, | |
1317 | .get_power_status = get_power_status, | |
1318 | .get_attention_status = get_attention_status, | |
1319 | .get_latch_status = get_latch_status, | |
1320 | .get_adapter_status = get_adapter_present, | |
1321 | .get_max_bus_speed = get_max_bus_speed, | |
1322 | .get_cur_bus_speed = get_cur_bus_speed, | |
1323 | /* .get_max_adapter_speed = get_max_adapter_speed, | |
1324 | .get_bus_name_status = get_bus_name, | |
1325 | */ | |
1326 | }; | |
1327 | ||
1328 | static void ibmphp_unload(void) | |
1329 | { | |
1330 | free_slots(); | |
1331 | debug("after slots\n"); | |
1332 | ibmphp_free_resources(); | |
1333 | debug("after resources\n"); | |
1334 | ibmphp_free_bus_info_queue(); | |
1335 | debug("after bus info\n"); | |
1336 | ibmphp_free_ebda_hpc_queue(); | |
1337 | debug("after ebda hpc\n"); | |
1338 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1339 | debug("after ebda pci rsrc\n"); | |
1340 | kfree(ibmphp_pci_bus); | |
1341 | } | |
1342 | ||
1343 | static int __init ibmphp_init(void) | |
1344 | { | |
1345 | struct pci_bus *bus; | |
1346 | int i = 0; | |
1347 | int rc = 0; | |
1348 | ||
1349 | init_flag = 1; | |
1350 | ||
1351 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1352 | ||
1353 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1354 | if (!ibmphp_pci_bus) { | |
1355 | err("out of memory\n"); | |
1356 | rc = -ENOMEM; | |
1357 | goto exit; | |
1358 | } | |
1359 | ||
1360 | bus = pci_find_bus(0, 0); | |
1361 | if (!bus) { | |
1362 | err("Can't find the root pci bus, can not continue\n"); | |
1363 | rc = -ENODEV; | |
1364 | goto error; | |
1365 | } | |
1366 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1367 | ||
1368 | ibmphp_debug = debug; | |
1369 | ||
1370 | ibmphp_hpc_initvars(); | |
1371 | ||
1372 | for (i = 0; i < 16; i++) | |
1373 | irqs[i] = 0; | |
1374 | ||
1375 | if ((rc = ibmphp_access_ebda())) | |
1376 | goto error; | |
1377 | debug("after ibmphp_access_ebda()\n"); | |
1378 | ||
1379 | if ((rc = ibmphp_rsrc_init())) | |
1380 | goto error; | |
1381 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1382 | ||
1383 | max_slots = get_max_slots(); | |
1384 | ||
1385 | if ((rc = ibmphp_register_pci())) | |
1386 | goto error; | |
1387 | ||
1388 | if (init_ops()) { | |
1389 | rc = -ENODEV; | |
1390 | goto error; | |
1391 | } | |
1392 | ||
1393 | ibmphp_print_test(); | |
1394 | if ((rc = ibmphp_hpc_start_poll_thread())) { | |
1395 | goto error; | |
1396 | } | |
1397 | ||
1398 | /* lock ourselves into memory with a module | |
1399 | * count of -1 so that no one can unload us. */ | |
1400 | module_put(THIS_MODULE); | |
1401 | ||
1402 | exit: | |
1403 | return rc; | |
1404 | ||
1405 | error: | |
1406 | ibmphp_unload(); | |
1407 | goto exit; | |
1408 | } | |
1409 | ||
1410 | static void __exit ibmphp_exit(void) | |
1411 | { | |
1412 | ibmphp_hpc_stop_poll_thread(); | |
1413 | debug("after polling\n"); | |
1414 | ibmphp_unload(); | |
1415 | debug("done\n"); | |
1416 | } | |
1417 | ||
1418 | module_init(ibmphp_init); | |
1419 | module_exit(ibmphp_exit); |