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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> | |
37 | #include <linux/smp_lock.h> | |
38 | #include "../pci.h" | |
39 | #include "../../../arch/i386/pci/pci.h" /* for struct irq_routing_table */ | |
40 | #include "ibmphp.h" | |
41 | ||
42 | #define attn_on(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNON) | |
43 | #define attn_off(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNOFF) | |
44 | #define attn_LED_blink(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_BLINKLED) | |
45 | #define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot (sl, READ_REVLEVEL, rev) | |
46 | #define get_hpc_options(sl, opt) ibmphp_hpc_readslot (sl, READ_HPCOPTIONS, opt) | |
47 | ||
48 | #define DRIVER_VERSION "0.6" | |
49 | #define DRIVER_DESC "IBM Hot Plug PCI Controller Driver" | |
50 | ||
51 | int ibmphp_debug; | |
52 | ||
53 | static int debug; | |
54 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
55 | MODULE_PARM_DESC (debug, "Debugging mode enabled or not"); | |
56 | MODULE_LICENSE ("GPL"); | |
57 | MODULE_DESCRIPTION (DRIVER_DESC); | |
58 | ||
59 | struct pci_bus *ibmphp_pci_bus; | |
60 | static int max_slots; | |
61 | ||
62 | static int irqs[16]; /* PIC mode IRQ's we're using so far (in case MPS | |
63 | * tables don't provide default info for empty slots */ | |
64 | ||
65 | static int init_flag; | |
66 | ||
67 | /* | |
68 | static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8); | |
69 | ||
70 | static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value) | |
71 | { | |
72 | return get_max_adapter_speed_1 (hs, value, 1); | |
73 | } | |
74 | */ | |
75 | static inline int get_cur_bus_info(struct slot **sl) | |
76 | { | |
77 | int rc = 1; | |
78 | struct slot * slot_cur = *sl; | |
79 | ||
80 | debug("options = %x\n", slot_cur->ctrl->options); | |
81 | debug("revision = %x\n", slot_cur->ctrl->revision); | |
82 | ||
83 | if (READ_BUS_STATUS(slot_cur->ctrl)) | |
84 | rc = ibmphp_hpc_readslot(slot_cur, READ_BUSSTATUS, NULL); | |
85 | ||
86 | if (rc) | |
87 | return rc; | |
88 | ||
89 | slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED(slot_cur->busstatus); | |
90 | if (READ_BUS_MODE(slot_cur->ctrl)) | |
91 | slot_cur->bus_on->current_bus_mode = | |
92 | CURRENT_BUS_MODE(slot_cur->busstatus); | |
93 | else | |
94 | slot_cur->bus_on->current_bus_mode = 0xFF; | |
95 | ||
96 | debug("busstatus = %x, bus_speed = %x, bus_mode = %x\n", | |
97 | slot_cur->busstatus, | |
98 | slot_cur->bus_on->current_speed, | |
99 | slot_cur->bus_on->current_bus_mode); | |
100 | ||
101 | *sl = slot_cur; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static inline int slot_update(struct slot **sl) | |
106 | { | |
107 | int rc; | |
108 | rc = ibmphp_hpc_readslot(*sl, READ_ALLSTAT, NULL); | |
109 | if (rc) | |
110 | return rc; | |
111 | if (!init_flag) | |
112 | rc = get_cur_bus_info(sl); | |
113 | return rc; | |
114 | } | |
115 | ||
116 | static int __init get_max_slots (void) | |
117 | { | |
118 | struct slot * slot_cur; | |
119 | struct list_head * tmp; | |
120 | u8 slot_count = 0; | |
121 | ||
122 | list_for_each(tmp, &ibmphp_slot_head) { | |
123 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
124 | /* sometimes the hot-pluggable slots start with 4 (not always from 1) */ | |
125 | slot_count = max(slot_count, slot_cur->number); | |
126 | } | |
127 | return slot_count; | |
128 | } | |
129 | ||
130 | /* This routine will put the correct slot->device information per slot. It's | |
131 | * called from initialization of the slot structures. It will also assign | |
132 | * interrupt numbers per each slot. | |
133 | * Parameters: struct slot | |
134 | * Returns 0 or errors | |
135 | */ | |
136 | int ibmphp_init_devno(struct slot **cur_slot) | |
137 | { | |
138 | struct irq_routing_table *rtable; | |
139 | int len; | |
140 | int loop; | |
141 | int i; | |
142 | ||
143 | rtable = pcibios_get_irq_routing_table(); | |
144 | if (!rtable) { | |
145 | err("no BIOS routing table...\n"); | |
146 | return -ENOMEM; | |
147 | } | |
148 | ||
149 | len = (rtable->size - sizeof(struct irq_routing_table)) / | |
150 | sizeof(struct irq_info); | |
151 | ||
152 | if (!len) | |
153 | return -1; | |
154 | for (loop = 0; loop < len; loop++) { | |
155 | if ((*cur_slot)->number == rtable->slots[loop].slot) { | |
156 | if ((*cur_slot)->bus == rtable->slots[loop].bus) { | |
157 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); | |
158 | for (i = 0; i < 4; i++) | |
159 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
160 | (int) (*cur_slot)->device, i); | |
161 | ||
162 | debug("(*cur_slot)->irq[0] = %x\n", | |
163 | (*cur_slot)->irq[0]); | |
164 | debug("(*cur_slot)->irq[1] = %x\n", | |
165 | (*cur_slot)->irq[1]); | |
166 | debug("(*cur_slot)->irq[2] = %x\n", | |
167 | (*cur_slot)->irq[2]); | |
168 | debug("(*cur_slot)->irq[3] = %x\n", | |
169 | (*cur_slot)->irq[3]); | |
170 | ||
171 | debug("rtable->exlusive_irqs = %x\n", | |
172 | rtable->exclusive_irqs); | |
173 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", | |
174 | rtable->slots[loop].irq[0].bitmap); | |
175 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", | |
176 | rtable->slots[loop].irq[1].bitmap); | |
177 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", | |
178 | rtable->slots[loop].irq[2].bitmap); | |
179 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", | |
180 | rtable->slots[loop].irq[3].bitmap); | |
181 | ||
182 | debug("rtable->slots[loop].irq[0].link = %x\n", | |
183 | rtable->slots[loop].irq[0].link); | |
184 | debug("rtable->slots[loop].irq[1].link = %x\n", | |
185 | rtable->slots[loop].irq[1].link); | |
186 | debug("rtable->slots[loop].irq[2].link = %x\n", | |
187 | rtable->slots[loop].irq[2].link); | |
188 | debug("rtable->slots[loop].irq[3].link = %x\n", | |
189 | rtable->slots[loop].irq[3].link); | |
190 | debug("end of init_devno\n"); | |
191 | return 0; | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
196 | return -1; | |
197 | } | |
198 | ||
199 | static inline int power_on(struct slot *slot_cur) | |
200 | { | |
201 | u8 cmd = HPC_SLOT_ON; | |
202 | int retval; | |
203 | ||
204 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
205 | if (retval) { | |
206 | err("power on failed\n"); | |
207 | return retval; | |
208 | } | |
209 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
210 | err("command not completed successfully in power_on\n"); | |
211 | return -EIO; | |
212 | } | |
213 | msleep(3000); /* For ServeRAID cards, and some 66 PCI */ | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static inline int power_off(struct slot *slot_cur) | |
218 | { | |
219 | u8 cmd = HPC_SLOT_OFF; | |
220 | int retval; | |
221 | ||
222 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
223 | if (retval) { | |
224 | err("power off failed\n"); | |
225 | return retval; | |
226 | } | |
227 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
228 | err("command not completed successfully in power_off\n"); | |
229 | retval = -EIO; | |
230 | } | |
231 | return retval; | |
232 | } | |
233 | ||
234 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value) | |
235 | { | |
236 | int rc = 0; | |
237 | struct slot *pslot; | |
072888fa | 238 | u8 cmd = 0x00; /* avoid compiler warning */ |
1da177e4 LT |
239 | |
240 | debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", | |
241 | (ulong) hotplug_slot, value); | |
242 | ibmphp_lock_operations(); | |
072888fa | 243 | |
1da177e4 LT |
244 | |
245 | if (hotplug_slot) { | |
246 | switch (value) { | |
247 | case HPC_SLOT_ATTN_OFF: | |
248 | cmd = HPC_SLOT_ATTNOFF; | |
249 | break; | |
250 | case HPC_SLOT_ATTN_ON: | |
251 | cmd = HPC_SLOT_ATTNON; | |
252 | break; | |
253 | case HPC_SLOT_ATTN_BLINK: | |
254 | cmd = HPC_SLOT_BLINKLED; | |
255 | break; | |
256 | default: | |
257 | rc = -ENODEV; | |
258 | err("set_attention_status - Error : invalid input [%x]\n", | |
259 | value); | |
260 | break; | |
261 | } | |
262 | if (rc == 0) { | |
263 | pslot = hotplug_slot->private; | |
264 | if (pslot) | |
265 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
266 | else | |
267 | rc = -ENODEV; | |
268 | } | |
269 | } else | |
270 | rc = -ENODEV; | |
271 | ||
272 | ibmphp_unlock_operations(); | |
273 | ||
274 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
275 | return rc; | |
276 | } | |
277 | ||
278 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
279 | { | |
280 | int rc = -ENODEV; | |
281 | struct slot *pslot; | |
282 | struct slot myslot; | |
283 | ||
284 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
285 | (ulong) hotplug_slot, (ulong) value); | |
286 | ||
287 | ibmphp_lock_operations(); | |
288 | if (hotplug_slot && value) { | |
289 | pslot = hotplug_slot->private; | |
290 | if (pslot) { | |
291 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
292 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
293 | &(myslot.status)); | |
294 | if (!rc) | |
295 | rc = ibmphp_hpc_readslot(pslot, | |
296 | READ_EXTSLOTSTATUS, | |
297 | &(myslot.ext_status)); | |
298 | if (!rc) | |
299 | *value = SLOT_ATTN(myslot.status, | |
300 | myslot.ext_status); | |
301 | } | |
302 | } | |
303 | ||
304 | ibmphp_unlock_operations(); | |
305 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
306 | return rc; | |
307 | } | |
308 | ||
309 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
310 | { | |
311 | int rc = -ENODEV; | |
312 | struct slot *pslot; | |
313 | struct slot myslot; | |
314 | ||
315 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
316 | (ulong) hotplug_slot, (ulong) value); | |
317 | ibmphp_lock_operations(); | |
318 | if (hotplug_slot && value) { | |
319 | pslot = hotplug_slot->private; | |
320 | if (pslot) { | |
321 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
322 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
323 | &(myslot.status)); | |
324 | if (!rc) | |
325 | *value = SLOT_LATCH(myslot.status); | |
326 | } | |
327 | } | |
328 | ||
329 | ibmphp_unlock_operations(); | |
330 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
331 | rc, rc, *value); | |
332 | return rc; | |
333 | } | |
334 | ||
335 | ||
336 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
337 | { | |
338 | int rc = -ENODEV; | |
339 | struct slot *pslot; | |
340 | struct slot myslot; | |
341 | ||
342 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
343 | (ulong) hotplug_slot, (ulong) value); | |
344 | ibmphp_lock_operations(); | |
345 | if (hotplug_slot && value) { | |
346 | pslot = hotplug_slot->private; | |
347 | if (pslot) { | |
348 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
349 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
350 | &(myslot.status)); | |
351 | if (!rc) | |
352 | *value = SLOT_PWRGD(myslot.status); | |
353 | } | |
354 | } | |
355 | ||
356 | ibmphp_unlock_operations(); | |
357 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
358 | rc, rc, *value); | |
359 | return rc; | |
360 | } | |
361 | ||
362 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value) | |
363 | { | |
364 | int rc = -ENODEV; | |
365 | struct slot *pslot; | |
366 | u8 present; | |
367 | struct slot myslot; | |
368 | ||
369 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
370 | (ulong) hotplug_slot, (ulong) value); | |
371 | ibmphp_lock_operations(); | |
372 | if (hotplug_slot && value) { | |
373 | pslot = hotplug_slot->private; | |
374 | if (pslot) { | |
375 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
376 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
377 | &(myslot.status)); | |
378 | if (!rc) { | |
379 | present = SLOT_PRESENT(myslot.status); | |
380 | if (present == HPC_SLOT_EMPTY) | |
381 | *value = 0; | |
382 | else | |
383 | *value = 1; | |
384 | } | |
385 | } | |
386 | } | |
387 | ||
388 | ibmphp_unlock_operations(); | |
389 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
390 | return rc; | |
391 | } | |
392 | ||
393 | static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
394 | { | |
395 | int rc = -ENODEV; | |
396 | struct slot *pslot; | |
397 | u8 mode = 0; | |
398 | ||
399 | debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __FUNCTION__, | |
400 | hotplug_slot, value); | |
401 | ||
402 | ibmphp_lock_operations(); | |
403 | ||
404 | if (hotplug_slot && value) { | |
405 | pslot = hotplug_slot->private; | |
406 | if (pslot) { | |
407 | rc = 0; | |
408 | mode = pslot->supported_bus_mode; | |
409 | *value = pslot->supported_speed; | |
410 | switch (*value) { | |
411 | case BUS_SPEED_33: | |
412 | break; | |
413 | case BUS_SPEED_66: | |
414 | if (mode == BUS_MODE_PCIX) | |
415 | *value += 0x01; | |
416 | break; | |
417 | case BUS_SPEED_100: | |
418 | case BUS_SPEED_133: | |
419 | *value = pslot->supported_speed + 0x01; | |
420 | break; | |
421 | default: | |
422 | /* Note (will need to change): there would be soon 256, 512 also */ | |
423 | rc = -ENODEV; | |
424 | } | |
425 | } | |
426 | } | |
427 | ||
428 | ibmphp_unlock_operations(); | |
429 | debug("%s - Exit rc[%d] value[%x]\n", __FUNCTION__, rc, *value); | |
430 | return rc; | |
431 | } | |
432 | ||
433 | static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
434 | { | |
435 | int rc = -ENODEV; | |
436 | struct slot *pslot; | |
437 | u8 mode = 0; | |
438 | ||
439 | debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __FUNCTION__, | |
440 | hotplug_slot, value); | |
441 | ||
442 | ibmphp_lock_operations(); | |
443 | ||
444 | if (hotplug_slot && value) { | |
445 | pslot = hotplug_slot->private; | |
446 | if (pslot) { | |
447 | rc = get_cur_bus_info(&pslot); | |
448 | if (!rc) { | |
449 | mode = pslot->bus_on->current_bus_mode; | |
450 | *value = pslot->bus_on->current_speed; | |
451 | switch (*value) { | |
452 | case BUS_SPEED_33: | |
453 | break; | |
454 | case BUS_SPEED_66: | |
455 | if (mode == BUS_MODE_PCIX) | |
456 | *value += 0x01; | |
457 | else if (mode == BUS_MODE_PCI) | |
458 | ; | |
459 | else | |
460 | *value = PCI_SPEED_UNKNOWN; | |
461 | break; | |
462 | case BUS_SPEED_100: | |
463 | case BUS_SPEED_133: | |
464 | *value += 0x01; | |
465 | break; | |
466 | default: | |
467 | /* Note of change: there would also be 256, 512 soon */ | |
468 | rc = -ENODEV; | |
469 | } | |
470 | } | |
471 | } | |
472 | } | |
473 | ||
474 | ibmphp_unlock_operations(); | |
475 | debug("%s - Exit rc[%d] value[%x]\n", __FUNCTION__, rc, *value); | |
476 | return rc; | |
477 | } | |
478 | ||
479 | /* | |
480 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 * value, u8 flag) | |
481 | { | |
482 | int rc = -ENODEV; | |
483 | struct slot *pslot; | |
484 | struct slot myslot; | |
485 | ||
486 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
487 | (ulong)hotplug_slot, (ulong) value); | |
488 | ||
489 | if (flag) | |
490 | ibmphp_lock_operations(); | |
491 | ||
492 | if (hotplug_slot && value) { | |
493 | pslot = hotplug_slot->private; | |
494 | if (pslot) { | |
495 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
496 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
497 | &(myslot.status)); | |
498 | ||
499 | if (!(SLOT_LATCH (myslot.status)) && | |
500 | (SLOT_PRESENT (myslot.status))) { | |
501 | rc = ibmphp_hpc_readslot(pslot, | |
502 | READ_EXTSLOTSTATUS, | |
503 | &(myslot.ext_status)); | |
504 | if (!rc) | |
505 | *value = SLOT_SPEED(myslot.ext_status); | |
506 | } else | |
507 | *value = MAX_ADAPTER_NONE; | |
508 | } | |
509 | } | |
510 | ||
511 | if (flag) | |
512 | ibmphp_unlock_operations(); | |
513 | ||
514 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
515 | return rc; | |
516 | } | |
517 | ||
518 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char * value) | |
519 | { | |
520 | int rc = -ENODEV; | |
521 | struct slot *pslot = NULL; | |
522 | ||
523 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
524 | ||
525 | ibmphp_lock_operations(); | |
526 | ||
527 | if (hotplug_slot) { | |
528 | pslot = hotplug_slot->private; | |
529 | if (pslot) { | |
530 | rc = 0; | |
531 | snprintf(value, 100, "Bus %x", pslot->bus); | |
532 | } | |
533 | } else | |
534 | rc = -ENODEV; | |
535 | ||
536 | ibmphp_unlock_operations(); | |
537 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
538 | return rc; | |
539 | } | |
540 | */ | |
541 | ||
542 | /**************************************************************************** | |
543 | * This routine will initialize the ops data structure used in the validate | |
544 | * function. It will also power off empty slots that are powered on since BIOS | |
545 | * leaves those on, albeit disconnected | |
546 | ****************************************************************************/ | |
547 | static int __init init_ops(void) | |
548 | { | |
549 | struct slot *slot_cur; | |
550 | struct list_head *tmp; | |
551 | int retval; | |
552 | int rc; | |
553 | ||
554 | list_for_each(tmp, &ibmphp_slot_head) { | |
555 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
556 | ||
557 | if (!slot_cur) | |
558 | return -ENODEV; | |
559 | ||
560 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", | |
561 | slot_cur->number); | |
562 | if (slot_cur->ctrl->revision == 0xFF) | |
563 | if (get_ctrl_revision(slot_cur, | |
564 | &slot_cur->ctrl->revision)) | |
565 | return -1; | |
566 | ||
567 | if (slot_cur->bus_on->current_speed == 0xFF) | |
568 | if (get_cur_bus_info(&slot_cur)) | |
569 | return -1; | |
570 | ||
571 | if (slot_cur->ctrl->options == 0xFF) | |
572 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
573 | return -1; | |
574 | ||
575 | retval = slot_update(&slot_cur); | |
576 | if (retval) | |
577 | return retval; | |
578 | ||
579 | debug("status = %x\n", slot_cur->status); | |
580 | debug("ext_status = %x\n", slot_cur->ext_status); | |
581 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
582 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
583 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
584 | ||
585 | if ((SLOT_PWRGD(slot_cur->status)) && | |
586 | !(SLOT_PRESENT(slot_cur->status)) && | |
587 | !(SLOT_LATCH(slot_cur->status))) { | |
588 | debug("BEFORE POWER OFF COMMAND\n"); | |
589 | rc = power_off(slot_cur); | |
590 | if (rc) | |
591 | return rc; | |
592 | ||
593 | /* retval = slot_update(&slot_cur); | |
594 | * if (retval) | |
595 | * return retval; | |
596 | * ibmphp_update_slot_info(slot_cur); | |
597 | */ | |
598 | } | |
599 | } | |
600 | init_flag = 0; | |
601 | return 0; | |
602 | } | |
603 | ||
604 | /* This operation will check whether the slot is within the bounds and | |
605 | * the operation is valid to perform on that slot | |
606 | * Parameters: slot, operation | |
607 | * Returns: 0 or error codes | |
608 | */ | |
609 | static int validate(struct slot *slot_cur, int opn) | |
610 | { | |
611 | int number; | |
612 | int retval; | |
613 | ||
614 | if (!slot_cur) | |
615 | return -ENODEV; | |
616 | number = slot_cur->number; | |
617 | if ((number > max_slots) || (number < 0)) | |
618 | return -EBADSLT; | |
619 | debug("slot_number in validate is %d\n", slot_cur->number); | |
620 | ||
621 | retval = slot_update(&slot_cur); | |
622 | if (retval) | |
623 | return retval; | |
624 | ||
625 | switch (opn) { | |
626 | case ENABLE: | |
627 | if (!(SLOT_PWRGD(slot_cur->status)) && | |
628 | (SLOT_PRESENT(slot_cur->status)) && | |
629 | !(SLOT_LATCH(slot_cur->status))) | |
630 | return 0; | |
631 | break; | |
632 | case DISABLE: | |
633 | if ((SLOT_PWRGD(slot_cur->status)) && | |
634 | (SLOT_PRESENT(slot_cur->status)) && | |
635 | !(SLOT_LATCH(slot_cur->status))) | |
636 | return 0; | |
637 | break; | |
638 | default: | |
639 | break; | |
640 | } | |
641 | err("validate failed....\n"); | |
642 | return -EINVAL; | |
643 | } | |
644 | ||
645 | /**************************************************************************** | |
646 | * This routine is for updating the data structures in the hotplug core | |
647 | * Parameters: struct slot | |
648 | * Returns: 0 or error | |
649 | ****************************************************************************/ | |
650 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
651 | { | |
652 | struct hotplug_slot_info *info; | |
653 | int rc; | |
654 | u8 bus_speed; | |
655 | u8 mode; | |
656 | ||
657 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
658 | if (!info) { | |
659 | err("out of system memory\n"); | |
660 | return -ENOMEM; | |
661 | } | |
662 | ||
663 | info->power_status = SLOT_PWRGD(slot_cur->status); | |
664 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
665 | slot_cur->ext_status); | |
666 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
667 | if (!SLOT_PRESENT(slot_cur->status)) { | |
668 | info->adapter_status = 0; | |
669 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ | |
670 | } else { | |
671 | info->adapter_status = 1; | |
672 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, | |
673 | &info->max_adapter_speed_status, 0); */ | |
674 | } | |
675 | ||
676 | bus_speed = slot_cur->bus_on->current_speed; | |
677 | mode = slot_cur->bus_on->current_bus_mode; | |
678 | ||
679 | switch (bus_speed) { | |
680 | case BUS_SPEED_33: | |
681 | break; | |
682 | case BUS_SPEED_66: | |
683 | if (mode == BUS_MODE_PCIX) | |
684 | bus_speed += 0x01; | |
685 | else if (mode == BUS_MODE_PCI) | |
686 | ; | |
687 | else | |
688 | bus_speed = PCI_SPEED_UNKNOWN; | |
689 | break; | |
690 | case BUS_SPEED_100: | |
691 | case BUS_SPEED_133: | |
692 | bus_speed += 0x01; | |
693 | break; | |
694 | default: | |
695 | bus_speed = PCI_SPEED_UNKNOWN; | |
696 | } | |
697 | ||
698 | info->cur_bus_speed = bus_speed; | |
699 | info->max_bus_speed = slot_cur->hotplug_slot->info->max_bus_speed; | |
700 | // To do: bus_names | |
701 | ||
702 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); | |
703 | kfree(info); | |
704 | return rc; | |
705 | } | |
706 | ||
707 | ||
708 | /****************************************************************************** | |
709 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
710 | * is called from visit routines | |
711 | ******************************************************************************/ | |
712 | ||
713 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
714 | { | |
715 | struct pci_func *func_cur; | |
716 | struct slot *slot_cur; | |
717 | struct list_head * tmp; | |
718 | list_for_each(tmp, &ibmphp_slot_head) { | |
719 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
720 | if (slot_cur->func) { | |
721 | func_cur = slot_cur->func; | |
722 | while (func_cur) { | |
723 | if ((func_cur->busno == busno) && | |
724 | (func_cur->device == device) && | |
725 | (func_cur->function == function)) | |
726 | return func_cur; | |
727 | func_cur = func_cur->next; | |
728 | } | |
729 | } | |
730 | } | |
731 | return NULL; | |
732 | } | |
733 | ||
734 | /************************************************************* | |
735 | * This routine frees up memory used by struct slot, including | |
736 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
737 | * and deregistering from the hotplug core | |
738 | *************************************************************/ | |
739 | static void free_slots(void) | |
740 | { | |
741 | struct slot *slot_cur; | |
742 | struct list_head * tmp; | |
743 | struct list_head * next; | |
744 | ||
745 | debug("%s -- enter\n", __FUNCTION__); | |
746 | ||
747 | list_for_each_safe(tmp, next, &ibmphp_slot_head) { | |
748 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
749 | pci_hp_deregister(slot_cur->hotplug_slot); | |
750 | } | |
751 | debug("%s -- exit\n", __FUNCTION__); | |
752 | } | |
753 | ||
754 | static void ibm_unconfigure_device(struct pci_func *func) | |
755 | { | |
756 | struct pci_dev *temp; | |
757 | u8 j; | |
758 | ||
759 | debug("inside %s\n", __FUNCTION__); | |
760 | debug("func->device = %x, func->function = %x\n", | |
761 | func->device, func->function); | |
762 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
763 | ||
764 | for (j = 0; j < 0x08; j++) { | |
765 | temp = pci_find_slot(func->busno, (func->device << 3) | j); | |
766 | if (temp) | |
767 | pci_remove_bus_device(temp); | |
768 | } | |
769 | } | |
770 | ||
771 | /* | |
772 | * The following function is to fix kernel bug regarding | |
773 | * getting bus entries, here we manually add those primary | |
774 | * bus entries to kernel bus structure whenever apply | |
775 | */ | |
776 | static u8 bus_structure_fixup(u8 busno) | |
777 | { | |
778 | struct pci_bus *bus; | |
779 | struct pci_dev *dev; | |
780 | u16 l; | |
781 | ||
782 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
783 | return 1; | |
784 | ||
785 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
786 | if (!bus) { | |
787 | err("%s - out of memory\n", __FUNCTION__); | |
788 | return 1; | |
789 | } | |
790 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
791 | if (!dev) { | |
792 | kfree(bus); | |
793 | err("%s - out of memory\n", __FUNCTION__); | |
794 | return 1; | |
795 | } | |
796 | ||
797 | bus->number = busno; | |
798 | bus->ops = ibmphp_pci_bus->ops; | |
799 | dev->bus = bus; | |
800 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
801 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
802 | (l != 0x0000) && (l != 0xffff)) { | |
803 | debug("%s - Inside bus_struture_fixup()\n", | |
804 | __FUNCTION__); | |
805 | pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); | |
806 | break; | |
807 | } | |
808 | } | |
809 | ||
810 | kfree(dev); | |
811 | kfree(bus); | |
812 | ||
813 | return 0; | |
814 | } | |
815 | ||
816 | static int ibm_configure_device(struct pci_func *func) | |
817 | { | |
818 | unsigned char bus; | |
819 | struct pci_bus *child; | |
820 | int num; | |
821 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
822 | for bridged devices primarily */ | |
823 | ||
824 | if (!(bus_structure_fixup(func->busno))) | |
825 | flag = 1; | |
826 | if (func->dev == NULL) | |
827 | func->dev = pci_find_slot(func->busno, | |
828 | PCI_DEVFN(func->device, func->function)); | |
829 | ||
830 | if (func->dev == NULL) { | |
831 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
832 | if (!bus) | |
833 | return 0; | |
834 | ||
835 | num = pci_scan_slot(bus, | |
836 | PCI_DEVFN(func->device, func->function)); | |
837 | if (num) | |
838 | pci_bus_add_devices(bus); | |
839 | ||
840 | func->dev = pci_find_slot(func->busno, | |
841 | PCI_DEVFN(func->device, func->function)); | |
842 | if (func->dev == NULL) { | |
843 | err("ERROR... : pci_dev still NULL\n"); | |
844 | return 0; | |
845 | } | |
846 | } | |
847 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
848 | pci_read_config_byte(func->dev, PCI_SECONDARY_BUS, &bus); | |
849 | child = pci_add_new_bus(func->dev->bus, func->dev, bus); | |
850 | pci_do_scan_bus(child); | |
851 | } | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | /******************************************************* | |
857 | * Returns whether the bus is empty or not | |
858 | *******************************************************/ | |
859 | static int is_bus_empty(struct slot * slot_cur) | |
860 | { | |
861 | int rc; | |
862 | struct slot * tmp_slot; | |
863 | u8 i = slot_cur->bus_on->slot_min; | |
864 | ||
865 | while (i <= slot_cur->bus_on->slot_max) { | |
866 | if (i == slot_cur->number) { | |
867 | i++; | |
868 | continue; | |
869 | } | |
870 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
871 | if (!tmp_slot) | |
872 | return 0; | |
873 | rc = slot_update(&tmp_slot); | |
874 | if (rc) | |
875 | return 0; | |
876 | if (SLOT_PRESENT(tmp_slot->status) && | |
877 | SLOT_PWRGD(tmp_slot->status)) | |
878 | return 0; | |
879 | i++; | |
880 | } | |
881 | return 1; | |
882 | } | |
883 | ||
884 | /*********************************************************** | |
885 | * If the HPC permits and the bus currently empty, tries to set the | |
886 | * bus speed and mode at the maximum card and bus capability | |
887 | * Parameters: slot | |
888 | * Returns: bus is set (0) or error code | |
889 | ***********************************************************/ | |
890 | static int set_bus(struct slot * slot_cur) | |
891 | { | |
892 | int rc; | |
893 | u8 speed; | |
894 | u8 cmd = 0x0; | |
895 | int retval; | |
896 | static struct pci_device_id ciobx[] = { | |
897 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, | |
898 | { }, | |
899 | }; | |
900 | ||
901 | debug("%s - entry slot # %d\n", __FUNCTION__, slot_cur->number); | |
902 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { | |
903 | rc = slot_update(&slot_cur); | |
904 | if (rc) | |
905 | return rc; | |
906 | speed = SLOT_SPEED(slot_cur->ext_status); | |
907 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
908 | switch (speed) { | |
909 | case HPC_SLOT_SPEED_33: | |
910 | cmd = HPC_BUS_33CONVMODE; | |
911 | break; | |
912 | case HPC_SLOT_SPEED_66: | |
913 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
914 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
915 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
916 | cmd = HPC_BUS_66PCIXMODE; | |
917 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
918 | /* if max slot/bus capability is 66 pci | |
919 | and there's no bus mode mismatch, then | |
920 | the adapter supports 66 pci */ | |
921 | cmd = HPC_BUS_66CONVMODE; | |
922 | else | |
923 | cmd = HPC_BUS_33CONVMODE; | |
924 | } else { | |
925 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
926 | cmd = HPC_BUS_66CONVMODE; | |
927 | else | |
928 | cmd = HPC_BUS_33CONVMODE; | |
929 | } | |
930 | break; | |
931 | case HPC_SLOT_SPEED_133: | |
932 | switch (slot_cur->supported_speed) { | |
933 | case BUS_SPEED_33: | |
934 | cmd = HPC_BUS_33CONVMODE; | |
935 | break; | |
936 | case BUS_SPEED_66: | |
937 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
938 | cmd = HPC_BUS_66PCIXMODE; | |
939 | else | |
940 | cmd = HPC_BUS_66CONVMODE; | |
941 | break; | |
942 | case BUS_SPEED_100: | |
943 | cmd = HPC_BUS_100PCIXMODE; | |
944 | break; | |
945 | case BUS_SPEED_133: | |
946 | /* This is to take care of the bug in CIOBX chip */ | |
947 | if (pci_dev_present(ciobx)) | |
948 | ibmphp_hpc_writeslot(slot_cur, | |
949 | HPC_BUS_100PCIXMODE); | |
950 | cmd = HPC_BUS_133PCIXMODE; | |
951 | break; | |
952 | default: | |
953 | err("Wrong bus speed\n"); | |
954 | return -ENODEV; | |
955 | } | |
956 | break; | |
957 | default: | |
958 | err("wrong slot speed\n"); | |
959 | return -ENODEV; | |
960 | } | |
961 | debug("setting bus speed for slot %d, cmd %x\n", | |
962 | slot_cur->number, cmd); | |
963 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
964 | if (retval) { | |
965 | err("setting bus speed failed\n"); | |
966 | return retval; | |
967 | } | |
968 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
969 | err("command not completed successfully in set_bus\n"); | |
970 | return -EIO; | |
971 | } | |
972 | } | |
973 | /* This is for x440, once Brandon fixes the firmware, | |
974 | will not need this delay */ | |
975 | msleep(1000); | |
976 | debug("%s -Exit\n", __FUNCTION__); | |
977 | return 0; | |
978 | } | |
979 | ||
980 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
981 | * This is used in deciding whether or not to power up the slot. | |
982 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on | |
983 | * same bus) | |
984 | * Parameters: slot | |
985 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
986 | */ | |
987 | static int check_limitations(struct slot *slot_cur) | |
988 | { | |
989 | u8 i; | |
990 | struct slot * tmp_slot; | |
991 | u8 count = 0; | |
992 | u8 limitation = 0; | |
993 | ||
994 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
995 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
996 | if (!tmp_slot) | |
997 | return -ENODEV; | |
998 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
999 | !(SLOT_CONNECT(tmp_slot->status))) | |
1000 | count++; | |
1001 | } | |
1002 | get_cur_bus_info(&slot_cur); | |
1003 | switch (slot_cur->bus_on->current_speed) { | |
1004 | case BUS_SPEED_33: | |
1005 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
1006 | break; | |
1007 | case BUS_SPEED_66: | |
1008 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
1009 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
1010 | else | |
1011 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
1012 | break; | |
1013 | case BUS_SPEED_100: | |
1014 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
1015 | break; | |
1016 | case BUS_SPEED_133: | |
1017 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | if ((count + 1) > limitation) | |
1022 | return -EINVAL; | |
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | static inline void print_card_capability(struct slot *slot_cur) | |
1027 | { | |
1028 | info("capability of the card is "); | |
1029 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) | |
1030 | info(" 133 MHz PCI-X\n"); | |
1031 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
1032 | info(" 66 MHz PCI-X\n"); | |
1033 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
1034 | info(" 66 MHz PCI\n"); | |
1035 | else | |
1036 | info(" 33 MHz PCI\n"); | |
1037 | ||
1038 | } | |
1039 | ||
1040 | /* This routine will power on the slot, configure the device(s) and find the | |
1041 | * drivers for them. | |
1042 | * Parameters: hotplug_slot | |
1043 | * Returns: 0 or failure codes | |
1044 | */ | |
1045 | static int enable_slot(struct hotplug_slot *hs) | |
1046 | { | |
1047 | int rc, i, rcpr; | |
1048 | struct slot *slot_cur; | |
1049 | u8 function; | |
1050 | struct pci_func *tmp_func; | |
1051 | ||
1052 | ibmphp_lock_operations(); | |
1053 | ||
1054 | debug("ENABLING SLOT........\n"); | |
1055 | slot_cur = hs->private; | |
1056 | ||
1057 | if ((rc = validate(slot_cur, ENABLE))) { | |
1058 | err("validate function failed\n"); | |
1059 | goto error_nopower; | |
1060 | } | |
1061 | ||
1062 | attn_LED_blink(slot_cur); | |
1063 | ||
1064 | rc = set_bus(slot_cur); | |
1065 | if (rc) { | |
1066 | err("was not able to set the bus\n"); | |
1067 | goto error_nopower; | |
1068 | } | |
1069 | ||
1070 | /*-----------------debugging------------------------------*/ | |
1071 | get_cur_bus_info(&slot_cur); | |
1072 | debug("the current bus speed right after set_bus = %x\n", | |
1073 | slot_cur->bus_on->current_speed); | |
1074 | /*----------------------------------------------------------*/ | |
1075 | ||
1076 | rc = check_limitations(slot_cur); | |
1077 | if (rc) { | |
1078 | err("Adding this card exceeds the limitations of this bus.\n"); | |
1079 | err("(i.e., >1 133MHz cards running on same bus, or " | |
3fa63c7d | 1080 | ">2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1081 | err("Try hot-adding into another bus\n"); |
1082 | rc = -EINVAL; | |
1083 | goto error_nopower; | |
1084 | } | |
1085 | ||
1086 | rc = power_on(slot_cur); | |
1087 | ||
1088 | if (rc) { | |
1089 | err("something wrong when powering up... please see below for details\n"); | |
1090 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1091 | attn_off(slot_cur); | |
1092 | attn_on(slot_cur); | |
1093 | if (slot_update(&slot_cur)) { | |
1094 | attn_off(slot_cur); | |
1095 | attn_on(slot_cur); | |
1096 | rc = -ENODEV; | |
1097 | goto exit; | |
1098 | } | |
1099 | /* Check to see the error of why it failed */ | |
1100 | if ((SLOT_POWER(slot_cur->status)) && | |
1101 | !(SLOT_PWRGD(slot_cur->status))) | |
1102 | err("power fault occurred trying to power up\n"); | |
1103 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
1104 | err("bus speed mismatch occurred. please check " | |
1105 | "current bus speed and card capability\n"); | |
1106 | print_card_capability(slot_cur); | |
1107 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
1108 | err("bus mode mismatch occurred. please check " | |
1109 | "current bus mode and card capability\n"); | |
1110 | print_card_capability(slot_cur); | |
1111 | } | |
1112 | ibmphp_update_slot_info(slot_cur); | |
1113 | goto exit; | |
1114 | } | |
1115 | debug("after power_on\n"); | |
1116 | /*-----------------------debugging---------------------------*/ | |
1117 | get_cur_bus_info(&slot_cur); | |
1118 | debug("the current bus speed right after power_on = %x\n", | |
1119 | slot_cur->bus_on->current_speed); | |
1120 | /*----------------------------------------------------------*/ | |
1121 | ||
1122 | rc = slot_update(&slot_cur); | |
1123 | if (rc) | |
1124 | goto error_power; | |
1125 | ||
1126 | rc = -EINVAL; | |
1127 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1128 | err("power fault occurred trying to power up...\n"); | |
1129 | goto error_power; | |
1130 | } | |
1131 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
1132 | err("bus speed mismatch occurred. please check current bus " | |
1133 | "speed and card capability\n"); | |
1134 | print_card_capability(slot_cur); | |
1135 | goto error_power; | |
1136 | } | |
1137 | /* Don't think this case will happen after above checks... | |
1138 | * but just in case, for paranoia sake */ | |
1139 | if (!(SLOT_POWER(slot_cur->status))) { | |
1140 | err("power on failed...\n"); | |
1141 | goto error_power; | |
1142 | } | |
1143 | ||
1144 | slot_cur->func = kmalloc(sizeof(struct pci_func), GFP_KERNEL); | |
1145 | if (!slot_cur->func) { | |
1146 | /* We cannot do update_slot_info here, since no memory for | |
1147 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1148 | err("out of system memory\n"); | |
1149 | rc = -ENOMEM; | |
1150 | goto error_power; | |
1151 | } | |
1152 | memset(slot_cur->func, 0, sizeof(struct pci_func)); | |
1153 | slot_cur->func->busno = slot_cur->bus; | |
1154 | slot_cur->func->device = slot_cur->device; | |
1155 | for (i = 0; i < 4; i++) | |
1156 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1157 | ||
1158 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1159 | slot_cur->bus, slot_cur->device); | |
1160 | ||
1161 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1162 | err("configure_card was unsuccessful...\n"); | |
1163 | /* true because don't need to actually deallocate resources, | |
1164 | * just remove references */ | |
1165 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1166 | debug("after unconfigure_card\n"); | |
1167 | slot_cur->func = NULL; | |
1168 | rc = -ENOMEM; | |
1169 | goto error_power; | |
1170 | } | |
1171 | ||
1172 | function = 0x00; | |
1173 | do { | |
1174 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1175 | function++); | |
1176 | if (tmp_func && !(tmp_func->dev)) | |
1177 | ibm_configure_device(tmp_func); | |
1178 | } while (tmp_func); | |
1179 | ||
1180 | attn_off(slot_cur); | |
1181 | if (slot_update(&slot_cur)) { | |
1182 | rc = -EFAULT; | |
1183 | goto exit; | |
1184 | } | |
1185 | ibmphp_print_test(); | |
1186 | rc = ibmphp_update_slot_info(slot_cur); | |
1187 | exit: | |
1188 | ibmphp_unlock_operations(); | |
1189 | return rc; | |
1190 | ||
1191 | error_nopower: | |
1192 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1193 | attn_on(slot_cur); | |
1194 | error_cont: | |
1195 | rcpr = slot_update(&slot_cur); | |
1196 | if (rcpr) { | |
1197 | rc = rcpr; | |
1198 | goto exit; | |
1199 | } | |
1200 | ibmphp_update_slot_info(slot_cur); | |
1201 | goto exit; | |
1202 | ||
1203 | error_power: | |
1204 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1205 | attn_on(slot_cur); | |
1206 | rcpr = power_off(slot_cur); | |
1207 | if (rcpr) { | |
1208 | rc = rcpr; | |
1209 | goto exit; | |
1210 | } | |
1211 | goto error_cont; | |
1212 | } | |
1213 | ||
1214 | /************************************************************** | |
1215 | * HOT REMOVING ADAPTER CARD * | |
1216 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1217 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
1218 | DISABLE POWER , * | |
1219 | **************************************************************/ | |
1220 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1221 | { | |
1222 | struct slot *slot = hotplug_slot->private; | |
1223 | int rc; | |
1224 | ||
1225 | ibmphp_lock_operations(); | |
1226 | rc = ibmphp_do_disable_slot(slot); | |
1227 | ibmphp_unlock_operations(); | |
1228 | return rc; | |
1229 | } | |
1230 | ||
1231 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1232 | { | |
1233 | int rc; | |
1234 | u8 flag; | |
1235 | ||
1236 | debug("DISABLING SLOT...\n"); | |
1237 | ||
1238 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) { | |
1239 | return -ENODEV; | |
1240 | } | |
1241 | ||
1242 | flag = slot_cur->flag; | |
1243 | slot_cur->flag = TRUE; | |
1244 | ||
1245 | if (flag == TRUE) { | |
1246 | rc = validate(slot_cur, DISABLE); | |
1247 | /* checking if powered off already & valid slot # */ | |
1248 | if (rc) | |
1249 | goto error; | |
1250 | } | |
1251 | attn_LED_blink(slot_cur); | |
1252 | ||
1253 | if (slot_cur->func == NULL) { | |
1254 | /* We need this for fncs's that were there on bootup */ | |
1255 | slot_cur->func = kmalloc(sizeof(struct pci_func), GFP_KERNEL); | |
1256 | if (!slot_cur->func) { | |
1257 | err("out of system memory\n"); | |
1258 | rc = -ENOMEM; | |
1259 | goto error; | |
1260 | } | |
1261 | memset(slot_cur->func, 0, sizeof(struct pci_func)); | |
1262 | slot_cur->func->busno = slot_cur->bus; | |
1263 | slot_cur->func->device = slot_cur->device; | |
1264 | } | |
1265 | ||
1266 | ibm_unconfigure_device(slot_cur->func); | |
1267 | ||
1268 | /* If we got here from latch suddenly opening on operating card or | |
1269 | a power fault, there's no power to the card, so cannot | |
1270 | read from it to determine what resources it occupied. This operation | |
1271 | is forbidden anyhow. The best we can do is remove it from kernel | |
1272 | lists at least */ | |
1273 | ||
1274 | if (!flag) { | |
1275 | attn_off(slot_cur); | |
1276 | return 0; | |
1277 | } | |
1278 | ||
1279 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1280 | slot_cur->func = NULL; | |
1281 | debug("in disable_slot. after unconfigure_card\n"); | |
1282 | if (rc) { | |
1283 | err("could not unconfigure card.\n"); | |
1284 | goto error; | |
1285 | } | |
1286 | ||
1287 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1288 | if (rc) | |
1289 | goto error; | |
1290 | ||
1291 | attn_off(slot_cur); | |
1292 | rc = slot_update(&slot_cur); | |
1293 | if (rc) | |
1294 | goto exit; | |
1295 | ||
1296 | rc = ibmphp_update_slot_info(slot_cur); | |
1297 | ibmphp_print_test(); | |
1298 | exit: | |
1299 | return rc; | |
1300 | ||
1301 | error: | |
1302 | /* Need to turn off if was blinking b4 */ | |
1303 | attn_off(slot_cur); | |
1304 | attn_on(slot_cur); | |
1305 | if (slot_update(&slot_cur)) { | |
1306 | rc = -EFAULT; | |
1307 | goto exit; | |
1308 | } | |
1309 | if (flag) | |
1310 | ibmphp_update_slot_info(slot_cur); | |
1311 | goto exit; | |
1312 | } | |
1313 | ||
1314 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1315 | .owner = THIS_MODULE, | |
1316 | .set_attention_status = set_attention_status, | |
1317 | .enable_slot = enable_slot, | |
1318 | .disable_slot = ibmphp_disable_slot, | |
1319 | .hardware_test = NULL, | |
1320 | .get_power_status = get_power_status, | |
1321 | .get_attention_status = get_attention_status, | |
1322 | .get_latch_status = get_latch_status, | |
1323 | .get_adapter_status = get_adapter_present, | |
1324 | .get_max_bus_speed = get_max_bus_speed, | |
1325 | .get_cur_bus_speed = get_cur_bus_speed, | |
1326 | /* .get_max_adapter_speed = get_max_adapter_speed, | |
1327 | .get_bus_name_status = get_bus_name, | |
1328 | */ | |
1329 | }; | |
1330 | ||
1331 | static void ibmphp_unload(void) | |
1332 | { | |
1333 | free_slots(); | |
1334 | debug("after slots\n"); | |
1335 | ibmphp_free_resources(); | |
1336 | debug("after resources\n"); | |
1337 | ibmphp_free_bus_info_queue(); | |
1338 | debug("after bus info\n"); | |
1339 | ibmphp_free_ebda_hpc_queue(); | |
1340 | debug("after ebda hpc\n"); | |
1341 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1342 | debug("after ebda pci rsrc\n"); | |
1343 | kfree(ibmphp_pci_bus); | |
1344 | } | |
1345 | ||
1346 | static int __init ibmphp_init(void) | |
1347 | { | |
1348 | struct pci_bus *bus; | |
1349 | int i = 0; | |
1350 | int rc = 0; | |
1351 | ||
1352 | init_flag = 1; | |
1353 | ||
1354 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1355 | ||
1356 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1357 | if (!ibmphp_pci_bus) { | |
1358 | err("out of memory\n"); | |
1359 | rc = -ENOMEM; | |
1360 | goto exit; | |
1361 | } | |
1362 | ||
1363 | bus = pci_find_bus(0, 0); | |
1364 | if (!bus) { | |
1365 | err("Can't find the root pci bus, can not continue\n"); | |
1366 | rc = -ENODEV; | |
1367 | goto error; | |
1368 | } | |
1369 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1370 | ||
1371 | ibmphp_debug = debug; | |
1372 | ||
1373 | ibmphp_hpc_initvars(); | |
1374 | ||
1375 | for (i = 0; i < 16; i++) | |
1376 | irqs[i] = 0; | |
1377 | ||
1378 | if ((rc = ibmphp_access_ebda())) | |
1379 | goto error; | |
1380 | debug("after ibmphp_access_ebda()\n"); | |
1381 | ||
1382 | if ((rc = ibmphp_rsrc_init())) | |
1383 | goto error; | |
1384 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1385 | ||
1386 | max_slots = get_max_slots(); | |
1387 | ||
1388 | if ((rc = ibmphp_register_pci())) | |
1389 | goto error; | |
1390 | ||
1391 | if (init_ops()) { | |
1392 | rc = -ENODEV; | |
1393 | goto error; | |
1394 | } | |
1395 | ||
1396 | ibmphp_print_test(); | |
1397 | if ((rc = ibmphp_hpc_start_poll_thread())) { | |
1398 | goto error; | |
1399 | } | |
1400 | ||
1401 | /* lock ourselves into memory with a module | |
1402 | * count of -1 so that no one can unload us. */ | |
1403 | module_put(THIS_MODULE); | |
1404 | ||
1405 | exit: | |
1406 | return rc; | |
1407 | ||
1408 | error: | |
1409 | ibmphp_unload(); | |
1410 | goto exit; | |
1411 | } | |
1412 | ||
1413 | static void __exit ibmphp_exit(void) | |
1414 | { | |
1415 | ibmphp_hpc_stop_poll_thread(); | |
1416 | debug("after polling\n"); | |
1417 | ibmphp_unload(); | |
1418 | debug("done\n"); | |
1419 | } | |
1420 | ||
1421 | module_init(ibmphp_init); | |
1422 | module_exit(ibmphp_exit); |