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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> | |
1da177e4 | 37 | #include "../pci.h" |
82487711 | 38 | #include <asm/pci_x86.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 | ||
029c3c13 JJ |
151 | if (!len) { |
152 | kfree(rtable); | |
1da177e4 | 153 | return -1; |
029c3c13 | 154 | } |
1da177e4 LT |
155 | for (loop = 0; loop < len; loop++) { |
156 | if ((*cur_slot)->number == rtable->slots[loop].slot) { | |
157 | if ((*cur_slot)->bus == rtable->slots[loop].bus) { | |
158 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); | |
159 | for (i = 0; i < 4; i++) | |
160 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
161 | (int) (*cur_slot)->device, i); | |
162 | ||
163 | debug("(*cur_slot)->irq[0] = %x\n", | |
164 | (*cur_slot)->irq[0]); | |
165 | debug("(*cur_slot)->irq[1] = %x\n", | |
166 | (*cur_slot)->irq[1]); | |
167 | debug("(*cur_slot)->irq[2] = %x\n", | |
168 | (*cur_slot)->irq[2]); | |
169 | debug("(*cur_slot)->irq[3] = %x\n", | |
170 | (*cur_slot)->irq[3]); | |
171 | ||
172 | debug("rtable->exlusive_irqs = %x\n", | |
173 | rtable->exclusive_irqs); | |
174 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", | |
175 | rtable->slots[loop].irq[0].bitmap); | |
176 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", | |
177 | rtable->slots[loop].irq[1].bitmap); | |
178 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", | |
179 | rtable->slots[loop].irq[2].bitmap); | |
180 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", | |
181 | rtable->slots[loop].irq[3].bitmap); | |
182 | ||
183 | debug("rtable->slots[loop].irq[0].link = %x\n", | |
184 | rtable->slots[loop].irq[0].link); | |
185 | debug("rtable->slots[loop].irq[1].link = %x\n", | |
186 | rtable->slots[loop].irq[1].link); | |
187 | debug("rtable->slots[loop].irq[2].link = %x\n", | |
188 | rtable->slots[loop].irq[2].link); | |
189 | debug("rtable->slots[loop].irq[3].link = %x\n", | |
190 | rtable->slots[loop].irq[3].link); | |
191 | debug("end of init_devno\n"); | |
029c3c13 | 192 | kfree(rtable); |
1da177e4 LT |
193 | return 0; |
194 | } | |
195 | } | |
196 | } | |
197 | ||
029c3c13 | 198 | kfree(rtable); |
1da177e4 LT |
199 | return -1; |
200 | } | |
201 | ||
202 | static inline int power_on(struct slot *slot_cur) | |
203 | { | |
204 | u8 cmd = HPC_SLOT_ON; | |
205 | int retval; | |
206 | ||
207 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
208 | if (retval) { | |
209 | err("power on failed\n"); | |
210 | return retval; | |
211 | } | |
212 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
213 | err("command not completed successfully in power_on\n"); | |
214 | return -EIO; | |
215 | } | |
216 | msleep(3000); /* For ServeRAID cards, and some 66 PCI */ | |
217 | return 0; | |
218 | } | |
219 | ||
220 | static inline int power_off(struct slot *slot_cur) | |
221 | { | |
222 | u8 cmd = HPC_SLOT_OFF; | |
223 | int retval; | |
224 | ||
225 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
226 | if (retval) { | |
227 | err("power off failed\n"); | |
228 | return retval; | |
229 | } | |
230 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
231 | err("command not completed successfully in power_off\n"); | |
232 | retval = -EIO; | |
233 | } | |
234 | return retval; | |
235 | } | |
236 | ||
237 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value) | |
238 | { | |
239 | int rc = 0; | |
240 | struct slot *pslot; | |
072888fa | 241 | u8 cmd = 0x00; /* avoid compiler warning */ |
1da177e4 LT |
242 | |
243 | debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", | |
244 | (ulong) hotplug_slot, value); | |
245 | ibmphp_lock_operations(); | |
072888fa | 246 | |
1da177e4 LT |
247 | |
248 | if (hotplug_slot) { | |
249 | switch (value) { | |
250 | case HPC_SLOT_ATTN_OFF: | |
251 | cmd = HPC_SLOT_ATTNOFF; | |
252 | break; | |
253 | case HPC_SLOT_ATTN_ON: | |
254 | cmd = HPC_SLOT_ATTNON; | |
255 | break; | |
256 | case HPC_SLOT_ATTN_BLINK: | |
257 | cmd = HPC_SLOT_BLINKLED; | |
258 | break; | |
259 | default: | |
260 | rc = -ENODEV; | |
261 | err("set_attention_status - Error : invalid input [%x]\n", | |
262 | value); | |
263 | break; | |
264 | } | |
265 | if (rc == 0) { | |
266 | pslot = hotplug_slot->private; | |
267 | if (pslot) | |
268 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
269 | else | |
270 | rc = -ENODEV; | |
271 | } | |
272 | } else | |
273 | rc = -ENODEV; | |
274 | ||
275 | ibmphp_unlock_operations(); | |
276 | ||
277 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
278 | return rc; | |
279 | } | |
280 | ||
281 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
282 | { | |
283 | int rc = -ENODEV; | |
284 | struct slot *pslot; | |
285 | struct slot myslot; | |
286 | ||
287 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
288 | (ulong) hotplug_slot, (ulong) value); | |
289 | ||
290 | ibmphp_lock_operations(); | |
9df7fde5 | 291 | if (hotplug_slot) { |
1da177e4 LT |
292 | pslot = hotplug_slot->private; |
293 | if (pslot) { | |
294 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
295 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
296 | &(myslot.status)); | |
297 | if (!rc) | |
298 | rc = ibmphp_hpc_readslot(pslot, | |
299 | READ_EXTSLOTSTATUS, | |
300 | &(myslot.ext_status)); | |
301 | if (!rc) | |
302 | *value = SLOT_ATTN(myslot.status, | |
303 | myslot.ext_status); | |
304 | } | |
305 | } | |
306 | ||
307 | ibmphp_unlock_operations(); | |
308 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
309 | return rc; | |
310 | } | |
311 | ||
312 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
313 | { | |
314 | int rc = -ENODEV; | |
315 | struct slot *pslot; | |
316 | struct slot myslot; | |
317 | ||
318 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
319 | (ulong) hotplug_slot, (ulong) value); | |
320 | ibmphp_lock_operations(); | |
9df7fde5 | 321 | if (hotplug_slot) { |
1da177e4 LT |
322 | pslot = hotplug_slot->private; |
323 | if (pslot) { | |
324 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
325 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
326 | &(myslot.status)); | |
327 | if (!rc) | |
328 | *value = SLOT_LATCH(myslot.status); | |
329 | } | |
330 | } | |
331 | ||
332 | ibmphp_unlock_operations(); | |
333 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
334 | rc, rc, *value); | |
335 | return rc; | |
336 | } | |
337 | ||
338 | ||
339 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
340 | { | |
341 | int rc = -ENODEV; | |
342 | struct slot *pslot; | |
343 | struct slot myslot; | |
344 | ||
345 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
346 | (ulong) hotplug_slot, (ulong) value); | |
347 | ibmphp_lock_operations(); | |
9df7fde5 | 348 | if (hotplug_slot) { |
1da177e4 LT |
349 | pslot = hotplug_slot->private; |
350 | if (pslot) { | |
351 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
352 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
353 | &(myslot.status)); | |
354 | if (!rc) | |
355 | *value = SLOT_PWRGD(myslot.status); | |
356 | } | |
357 | } | |
358 | ||
359 | ibmphp_unlock_operations(); | |
360 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
361 | rc, rc, *value); | |
362 | return rc; | |
363 | } | |
364 | ||
365 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value) | |
366 | { | |
367 | int rc = -ENODEV; | |
368 | struct slot *pslot; | |
369 | u8 present; | |
370 | struct slot myslot; | |
371 | ||
372 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
373 | (ulong) hotplug_slot, (ulong) value); | |
374 | ibmphp_lock_operations(); | |
9df7fde5 | 375 | if (hotplug_slot) { |
1da177e4 LT |
376 | pslot = hotplug_slot->private; |
377 | if (pslot) { | |
378 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
379 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
380 | &(myslot.status)); | |
381 | if (!rc) { | |
382 | present = SLOT_PRESENT(myslot.status); | |
383 | if (present == HPC_SLOT_EMPTY) | |
384 | *value = 0; | |
385 | else | |
386 | *value = 1; | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
391 | ibmphp_unlock_operations(); | |
392 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
393 | return rc; | |
394 | } | |
395 | ||
396 | static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
397 | { | |
398 | int rc = -ENODEV; | |
399 | struct slot *pslot; | |
400 | u8 mode = 0; | |
401 | ||
66bef8c0 | 402 | debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __func__, |
1da177e4 LT |
403 | hotplug_slot, value); |
404 | ||
405 | ibmphp_lock_operations(); | |
406 | ||
9df7fde5 | 407 | if (hotplug_slot) { |
1da177e4 LT |
408 | pslot = hotplug_slot->private; |
409 | if (pslot) { | |
410 | rc = 0; | |
411 | mode = pslot->supported_bus_mode; | |
412 | *value = pslot->supported_speed; | |
413 | switch (*value) { | |
414 | case BUS_SPEED_33: | |
415 | break; | |
416 | case BUS_SPEED_66: | |
417 | if (mode == BUS_MODE_PCIX) | |
418 | *value += 0x01; | |
419 | break; | |
420 | case BUS_SPEED_100: | |
421 | case BUS_SPEED_133: | |
422 | *value = pslot->supported_speed + 0x01; | |
423 | break; | |
424 | default: | |
425 | /* Note (will need to change): there would be soon 256, 512 also */ | |
426 | rc = -ENODEV; | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | ibmphp_unlock_operations(); | |
66bef8c0 | 432 | debug("%s - Exit rc[%d] value[%x]\n", __func__, rc, *value); |
1da177e4 LT |
433 | return rc; |
434 | } | |
435 | ||
436 | static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) | |
437 | { | |
438 | int rc = -ENODEV; | |
439 | struct slot *pslot; | |
440 | u8 mode = 0; | |
441 | ||
66bef8c0 | 442 | debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __func__, |
1da177e4 LT |
443 | hotplug_slot, value); |
444 | ||
445 | ibmphp_lock_operations(); | |
446 | ||
9df7fde5 | 447 | if (hotplug_slot) { |
1da177e4 LT |
448 | pslot = hotplug_slot->private; |
449 | if (pslot) { | |
450 | rc = get_cur_bus_info(&pslot); | |
451 | if (!rc) { | |
452 | mode = pslot->bus_on->current_bus_mode; | |
453 | *value = pslot->bus_on->current_speed; | |
454 | switch (*value) { | |
455 | case BUS_SPEED_33: | |
456 | break; | |
457 | case BUS_SPEED_66: | |
458 | if (mode == BUS_MODE_PCIX) | |
459 | *value += 0x01; | |
460 | else if (mode == BUS_MODE_PCI) | |
461 | ; | |
462 | else | |
463 | *value = PCI_SPEED_UNKNOWN; | |
464 | break; | |
465 | case BUS_SPEED_100: | |
466 | case BUS_SPEED_133: | |
467 | *value += 0x01; | |
468 | break; | |
469 | default: | |
470 | /* Note of change: there would also be 256, 512 soon */ | |
471 | rc = -ENODEV; | |
472 | } | |
473 | } | |
474 | } | |
475 | } | |
476 | ||
477 | ibmphp_unlock_operations(); | |
66bef8c0 | 478 | debug("%s - Exit rc[%d] value[%x]\n", __func__, rc, *value); |
1da177e4 LT |
479 | return rc; |
480 | } | |
481 | ||
482 | /* | |
483 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 * value, u8 flag) | |
484 | { | |
485 | int rc = -ENODEV; | |
486 | struct slot *pslot; | |
487 | struct slot myslot; | |
488 | ||
489 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
490 | (ulong)hotplug_slot, (ulong) value); | |
491 | ||
492 | if (flag) | |
493 | ibmphp_lock_operations(); | |
494 | ||
495 | if (hotplug_slot && value) { | |
496 | pslot = hotplug_slot->private; | |
497 | if (pslot) { | |
498 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
499 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
500 | &(myslot.status)); | |
501 | ||
502 | if (!(SLOT_LATCH (myslot.status)) && | |
503 | (SLOT_PRESENT (myslot.status))) { | |
504 | rc = ibmphp_hpc_readslot(pslot, | |
505 | READ_EXTSLOTSTATUS, | |
506 | &(myslot.ext_status)); | |
507 | if (!rc) | |
508 | *value = SLOT_SPEED(myslot.ext_status); | |
509 | } else | |
510 | *value = MAX_ADAPTER_NONE; | |
511 | } | |
512 | } | |
513 | ||
514 | if (flag) | |
515 | ibmphp_unlock_operations(); | |
516 | ||
517 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
518 | return rc; | |
519 | } | |
520 | ||
521 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char * value) | |
522 | { | |
523 | int rc = -ENODEV; | |
524 | struct slot *pslot = NULL; | |
525 | ||
526 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
527 | ||
528 | ibmphp_lock_operations(); | |
529 | ||
530 | if (hotplug_slot) { | |
531 | pslot = hotplug_slot->private; | |
532 | if (pslot) { | |
533 | rc = 0; | |
534 | snprintf(value, 100, "Bus %x", pslot->bus); | |
535 | } | |
536 | } else | |
537 | rc = -ENODEV; | |
538 | ||
539 | ibmphp_unlock_operations(); | |
540 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
541 | return rc; | |
542 | } | |
543 | */ | |
544 | ||
545 | /**************************************************************************** | |
546 | * This routine will initialize the ops data structure used in the validate | |
547 | * function. It will also power off empty slots that are powered on since BIOS | |
548 | * leaves those on, albeit disconnected | |
549 | ****************************************************************************/ | |
550 | static int __init init_ops(void) | |
551 | { | |
552 | struct slot *slot_cur; | |
553 | struct list_head *tmp; | |
554 | int retval; | |
555 | int rc; | |
556 | ||
557 | list_for_each(tmp, &ibmphp_slot_head) { | |
558 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
559 | ||
560 | if (!slot_cur) | |
561 | return -ENODEV; | |
562 | ||
563 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", | |
564 | slot_cur->number); | |
565 | if (slot_cur->ctrl->revision == 0xFF) | |
566 | if (get_ctrl_revision(slot_cur, | |
567 | &slot_cur->ctrl->revision)) | |
568 | return -1; | |
569 | ||
570 | if (slot_cur->bus_on->current_speed == 0xFF) | |
571 | if (get_cur_bus_info(&slot_cur)) | |
572 | return -1; | |
573 | ||
574 | if (slot_cur->ctrl->options == 0xFF) | |
575 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
576 | return -1; | |
577 | ||
578 | retval = slot_update(&slot_cur); | |
579 | if (retval) | |
580 | return retval; | |
581 | ||
582 | debug("status = %x\n", slot_cur->status); | |
583 | debug("ext_status = %x\n", slot_cur->ext_status); | |
584 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
585 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
586 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
587 | ||
588 | if ((SLOT_PWRGD(slot_cur->status)) && | |
589 | !(SLOT_PRESENT(slot_cur->status)) && | |
590 | !(SLOT_LATCH(slot_cur->status))) { | |
591 | debug("BEFORE POWER OFF COMMAND\n"); | |
592 | rc = power_off(slot_cur); | |
593 | if (rc) | |
594 | return rc; | |
595 | ||
596 | /* retval = slot_update(&slot_cur); | |
597 | * if (retval) | |
598 | * return retval; | |
599 | * ibmphp_update_slot_info(slot_cur); | |
600 | */ | |
601 | } | |
602 | } | |
603 | init_flag = 0; | |
604 | return 0; | |
605 | } | |
606 | ||
607 | /* This operation will check whether the slot is within the bounds and | |
608 | * the operation is valid to perform on that slot | |
609 | * Parameters: slot, operation | |
610 | * Returns: 0 or error codes | |
611 | */ | |
612 | static int validate(struct slot *slot_cur, int opn) | |
613 | { | |
614 | int number; | |
615 | int retval; | |
616 | ||
617 | if (!slot_cur) | |
618 | return -ENODEV; | |
619 | number = slot_cur->number; | |
620 | if ((number > max_slots) || (number < 0)) | |
621 | return -EBADSLT; | |
622 | debug("slot_number in validate is %d\n", slot_cur->number); | |
623 | ||
624 | retval = slot_update(&slot_cur); | |
625 | if (retval) | |
626 | return retval; | |
627 | ||
628 | switch (opn) { | |
629 | case ENABLE: | |
630 | if (!(SLOT_PWRGD(slot_cur->status)) && | |
631 | (SLOT_PRESENT(slot_cur->status)) && | |
632 | !(SLOT_LATCH(slot_cur->status))) | |
633 | return 0; | |
634 | break; | |
635 | case DISABLE: | |
636 | if ((SLOT_PWRGD(slot_cur->status)) && | |
637 | (SLOT_PRESENT(slot_cur->status)) && | |
638 | !(SLOT_LATCH(slot_cur->status))) | |
639 | return 0; | |
640 | break; | |
641 | default: | |
642 | break; | |
643 | } | |
644 | err("validate failed....\n"); | |
645 | return -EINVAL; | |
646 | } | |
647 | ||
648 | /**************************************************************************** | |
649 | * This routine is for updating the data structures in the hotplug core | |
650 | * Parameters: struct slot | |
651 | * Returns: 0 or error | |
652 | ****************************************************************************/ | |
653 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
654 | { | |
655 | struct hotplug_slot_info *info; | |
656 | int rc; | |
657 | u8 bus_speed; | |
658 | u8 mode; | |
659 | ||
660 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
661 | if (!info) { | |
662 | err("out of system memory\n"); | |
663 | return -ENOMEM; | |
664 | } | |
665 | ||
666 | info->power_status = SLOT_PWRGD(slot_cur->status); | |
667 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
668 | slot_cur->ext_status); | |
669 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
670 | if (!SLOT_PRESENT(slot_cur->status)) { | |
671 | info->adapter_status = 0; | |
672 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ | |
673 | } else { | |
674 | info->adapter_status = 1; | |
675 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, | |
676 | &info->max_adapter_speed_status, 0); */ | |
677 | } | |
678 | ||
679 | bus_speed = slot_cur->bus_on->current_speed; | |
680 | mode = slot_cur->bus_on->current_bus_mode; | |
681 | ||
682 | switch (bus_speed) { | |
683 | case BUS_SPEED_33: | |
684 | break; | |
685 | case BUS_SPEED_66: | |
686 | if (mode == BUS_MODE_PCIX) | |
687 | bus_speed += 0x01; | |
688 | else if (mode == BUS_MODE_PCI) | |
689 | ; | |
690 | else | |
691 | bus_speed = PCI_SPEED_UNKNOWN; | |
692 | break; | |
693 | case BUS_SPEED_100: | |
694 | case BUS_SPEED_133: | |
695 | bus_speed += 0x01; | |
696 | break; | |
697 | default: | |
698 | bus_speed = PCI_SPEED_UNKNOWN; | |
699 | } | |
700 | ||
701 | info->cur_bus_speed = bus_speed; | |
702 | info->max_bus_speed = slot_cur->hotplug_slot->info->max_bus_speed; | |
703 | // To do: bus_names | |
704 | ||
705 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); | |
706 | kfree(info); | |
707 | return rc; | |
708 | } | |
709 | ||
710 | ||
711 | /****************************************************************************** | |
712 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
713 | * is called from visit routines | |
714 | ******************************************************************************/ | |
715 | ||
716 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
717 | { | |
718 | struct pci_func *func_cur; | |
719 | struct slot *slot_cur; | |
720 | struct list_head * tmp; | |
721 | list_for_each(tmp, &ibmphp_slot_head) { | |
722 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
723 | if (slot_cur->func) { | |
724 | func_cur = slot_cur->func; | |
725 | while (func_cur) { | |
726 | if ((func_cur->busno == busno) && | |
727 | (func_cur->device == device) && | |
728 | (func_cur->function == function)) | |
729 | return func_cur; | |
730 | func_cur = func_cur->next; | |
731 | } | |
732 | } | |
733 | } | |
734 | return NULL; | |
735 | } | |
736 | ||
737 | /************************************************************* | |
738 | * This routine frees up memory used by struct slot, including | |
739 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
740 | * and deregistering from the hotplug core | |
741 | *************************************************************/ | |
742 | static void free_slots(void) | |
743 | { | |
744 | struct slot *slot_cur; | |
745 | struct list_head * tmp; | |
746 | struct list_head * next; | |
747 | ||
66bef8c0 | 748 | debug("%s -- enter\n", __func__); |
1da177e4 LT |
749 | |
750 | list_for_each_safe(tmp, next, &ibmphp_slot_head) { | |
751 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
752 | pci_hp_deregister(slot_cur->hotplug_slot); | |
753 | } | |
66bef8c0 | 754 | debug("%s -- exit\n", __func__); |
1da177e4 LT |
755 | } |
756 | ||
757 | static void ibm_unconfigure_device(struct pci_func *func) | |
758 | { | |
759 | struct pci_dev *temp; | |
760 | u8 j; | |
761 | ||
66bef8c0 | 762 | debug("inside %s\n", __func__); |
1da177e4 LT |
763 | debug("func->device = %x, func->function = %x\n", |
764 | func->device, func->function); | |
765 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
766 | ||
767 | for (j = 0; j < 0x08; j++) { | |
f362b8bf JP |
768 | temp = pci_get_bus_and_slot(func->busno, (func->device << 3) | j); |
769 | if (temp) { | |
1da177e4 | 770 | pci_remove_bus_device(temp); |
f362b8bf JP |
771 | pci_dev_put(temp); |
772 | } | |
1da177e4 | 773 | } |
f362b8bf | 774 | pci_dev_put(func->dev); |
1da177e4 LT |
775 | } |
776 | ||
777 | /* | |
778 | * The following function is to fix kernel bug regarding | |
779 | * getting bus entries, here we manually add those primary | |
780 | * bus entries to kernel bus structure whenever apply | |
781 | */ | |
782 | static u8 bus_structure_fixup(u8 busno) | |
783 | { | |
784 | struct pci_bus *bus; | |
785 | struct pci_dev *dev; | |
786 | u16 l; | |
787 | ||
788 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
789 | return 1; | |
790 | ||
791 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
792 | if (!bus) { | |
66bef8c0 | 793 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
794 | return 1; |
795 | } | |
796 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
797 | if (!dev) { | |
798 | kfree(bus); | |
66bef8c0 | 799 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
800 | return 1; |
801 | } | |
802 | ||
803 | bus->number = busno; | |
804 | bus->ops = ibmphp_pci_bus->ops; | |
805 | dev->bus = bus; | |
806 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
807 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
808 | (l != 0x0000) && (l != 0xffff)) { | |
809 | debug("%s - Inside bus_struture_fixup()\n", | |
66bef8c0 | 810 | __func__); |
1da177e4 LT |
811 | pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); |
812 | break; | |
813 | } | |
814 | } | |
815 | ||
816 | kfree(dev); | |
817 | kfree(bus); | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | static int ibm_configure_device(struct pci_func *func) | |
823 | { | |
824 | unsigned char bus; | |
825 | struct pci_bus *child; | |
826 | int num; | |
827 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
828 | for bridged devices primarily */ | |
829 | ||
830 | if (!(bus_structure_fixup(func->busno))) | |
831 | flag = 1; | |
832 | if (func->dev == NULL) | |
f362b8bf | 833 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
834 | PCI_DEVFN(func->device, func->function)); |
835 | ||
836 | if (func->dev == NULL) { | |
837 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
838 | if (!bus) | |
839 | return 0; | |
840 | ||
841 | num = pci_scan_slot(bus, | |
842 | PCI_DEVFN(func->device, func->function)); | |
843 | if (num) | |
844 | pci_bus_add_devices(bus); | |
845 | ||
f362b8bf | 846 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
847 | PCI_DEVFN(func->device, func->function)); |
848 | if (func->dev == NULL) { | |
849 | err("ERROR... : pci_dev still NULL\n"); | |
850 | return 0; | |
851 | } | |
852 | } | |
853 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
854 | pci_read_config_byte(func->dev, PCI_SECONDARY_BUS, &bus); | |
855 | child = pci_add_new_bus(func->dev->bus, func->dev, bus); | |
856 | pci_do_scan_bus(child); | |
857 | } | |
858 | ||
859 | return 0; | |
860 | } | |
861 | ||
862 | /******************************************************* | |
863 | * Returns whether the bus is empty or not | |
864 | *******************************************************/ | |
865 | static int is_bus_empty(struct slot * slot_cur) | |
866 | { | |
867 | int rc; | |
868 | struct slot * tmp_slot; | |
869 | u8 i = slot_cur->bus_on->slot_min; | |
870 | ||
871 | while (i <= slot_cur->bus_on->slot_max) { | |
872 | if (i == slot_cur->number) { | |
873 | i++; | |
874 | continue; | |
875 | } | |
876 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
877 | if (!tmp_slot) | |
878 | return 0; | |
879 | rc = slot_update(&tmp_slot); | |
880 | if (rc) | |
881 | return 0; | |
882 | if (SLOT_PRESENT(tmp_slot->status) && | |
883 | SLOT_PWRGD(tmp_slot->status)) | |
884 | return 0; | |
885 | i++; | |
886 | } | |
887 | return 1; | |
888 | } | |
889 | ||
890 | /*********************************************************** | |
891 | * If the HPC permits and the bus currently empty, tries to set the | |
892 | * bus speed and mode at the maximum card and bus capability | |
893 | * Parameters: slot | |
894 | * Returns: bus is set (0) or error code | |
895 | ***********************************************************/ | |
896 | static int set_bus(struct slot * slot_cur) | |
897 | { | |
898 | int rc; | |
899 | u8 speed; | |
900 | u8 cmd = 0x0; | |
901 | int retval; | |
902 | static struct pci_device_id ciobx[] = { | |
903 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, | |
904 | { }, | |
905 | }; | |
906 | ||
66bef8c0 | 907 | debug("%s - entry slot # %d\n", __func__, slot_cur->number); |
1da177e4 LT |
908 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { |
909 | rc = slot_update(&slot_cur); | |
910 | if (rc) | |
911 | return rc; | |
912 | speed = SLOT_SPEED(slot_cur->ext_status); | |
913 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
914 | switch (speed) { | |
915 | case HPC_SLOT_SPEED_33: | |
916 | cmd = HPC_BUS_33CONVMODE; | |
917 | break; | |
918 | case HPC_SLOT_SPEED_66: | |
919 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
920 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
921 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
922 | cmd = HPC_BUS_66PCIXMODE; | |
923 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
924 | /* if max slot/bus capability is 66 pci | |
925 | and there's no bus mode mismatch, then | |
926 | the adapter supports 66 pci */ | |
927 | cmd = HPC_BUS_66CONVMODE; | |
928 | else | |
929 | cmd = HPC_BUS_33CONVMODE; | |
930 | } else { | |
931 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
932 | cmd = HPC_BUS_66CONVMODE; | |
933 | else | |
934 | cmd = HPC_BUS_33CONVMODE; | |
935 | } | |
936 | break; | |
937 | case HPC_SLOT_SPEED_133: | |
938 | switch (slot_cur->supported_speed) { | |
939 | case BUS_SPEED_33: | |
940 | cmd = HPC_BUS_33CONVMODE; | |
941 | break; | |
942 | case BUS_SPEED_66: | |
943 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
944 | cmd = HPC_BUS_66PCIXMODE; | |
945 | else | |
946 | cmd = HPC_BUS_66CONVMODE; | |
947 | break; | |
948 | case BUS_SPEED_100: | |
949 | cmd = HPC_BUS_100PCIXMODE; | |
950 | break; | |
951 | case BUS_SPEED_133: | |
952 | /* This is to take care of the bug in CIOBX chip */ | |
953 | if (pci_dev_present(ciobx)) | |
954 | ibmphp_hpc_writeslot(slot_cur, | |
955 | HPC_BUS_100PCIXMODE); | |
956 | cmd = HPC_BUS_133PCIXMODE; | |
957 | break; | |
958 | default: | |
959 | err("Wrong bus speed\n"); | |
960 | return -ENODEV; | |
961 | } | |
962 | break; | |
963 | default: | |
964 | err("wrong slot speed\n"); | |
965 | return -ENODEV; | |
966 | } | |
967 | debug("setting bus speed for slot %d, cmd %x\n", | |
968 | slot_cur->number, cmd); | |
969 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
970 | if (retval) { | |
971 | err("setting bus speed failed\n"); | |
972 | return retval; | |
973 | } | |
974 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
975 | err("command not completed successfully in set_bus\n"); | |
976 | return -EIO; | |
977 | } | |
978 | } | |
979 | /* This is for x440, once Brandon fixes the firmware, | |
980 | will not need this delay */ | |
981 | msleep(1000); | |
66bef8c0 | 982 | debug("%s -Exit\n", __func__); |
1da177e4 LT |
983 | return 0; |
984 | } | |
985 | ||
986 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
987 | * This is used in deciding whether or not to power up the slot. | |
988 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on | |
989 | * same bus) | |
990 | * Parameters: slot | |
991 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
992 | */ | |
993 | static int check_limitations(struct slot *slot_cur) | |
994 | { | |
995 | u8 i; | |
996 | struct slot * tmp_slot; | |
997 | u8 count = 0; | |
998 | u8 limitation = 0; | |
999 | ||
1000 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
1001 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
1002 | if (!tmp_slot) | |
1003 | return -ENODEV; | |
1004 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
1005 | !(SLOT_CONNECT(tmp_slot->status))) | |
1006 | count++; | |
1007 | } | |
1008 | get_cur_bus_info(&slot_cur); | |
1009 | switch (slot_cur->bus_on->current_speed) { | |
1010 | case BUS_SPEED_33: | |
1011 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
1012 | break; | |
1013 | case BUS_SPEED_66: | |
1014 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
1015 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
1016 | else | |
1017 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
1018 | break; | |
1019 | case BUS_SPEED_100: | |
1020 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
1021 | break; | |
1022 | case BUS_SPEED_133: | |
1023 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
1024 | break; | |
1025 | } | |
1026 | ||
1027 | if ((count + 1) > limitation) | |
1028 | return -EINVAL; | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static inline void print_card_capability(struct slot *slot_cur) | |
1033 | { | |
1034 | info("capability of the card is "); | |
1035 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) | |
1036 | info(" 133 MHz PCI-X\n"); | |
1037 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
1038 | info(" 66 MHz PCI-X\n"); | |
1039 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
1040 | info(" 66 MHz PCI\n"); | |
1041 | else | |
1042 | info(" 33 MHz PCI\n"); | |
1043 | ||
1044 | } | |
1045 | ||
1046 | /* This routine will power on the slot, configure the device(s) and find the | |
1047 | * drivers for them. | |
1048 | * Parameters: hotplug_slot | |
1049 | * Returns: 0 or failure codes | |
1050 | */ | |
1051 | static int enable_slot(struct hotplug_slot *hs) | |
1052 | { | |
1053 | int rc, i, rcpr; | |
1054 | struct slot *slot_cur; | |
1055 | u8 function; | |
1056 | struct pci_func *tmp_func; | |
1057 | ||
1058 | ibmphp_lock_operations(); | |
1059 | ||
1060 | debug("ENABLING SLOT........\n"); | |
1061 | slot_cur = hs->private; | |
1062 | ||
1063 | if ((rc = validate(slot_cur, ENABLE))) { | |
1064 | err("validate function failed\n"); | |
1065 | goto error_nopower; | |
1066 | } | |
1067 | ||
1068 | attn_LED_blink(slot_cur); | |
1069 | ||
1070 | rc = set_bus(slot_cur); | |
1071 | if (rc) { | |
1072 | err("was not able to set the bus\n"); | |
1073 | goto error_nopower; | |
1074 | } | |
1075 | ||
1076 | /*-----------------debugging------------------------------*/ | |
1077 | get_cur_bus_info(&slot_cur); | |
1078 | debug("the current bus speed right after set_bus = %x\n", | |
1079 | slot_cur->bus_on->current_speed); | |
1080 | /*----------------------------------------------------------*/ | |
1081 | ||
1082 | rc = check_limitations(slot_cur); | |
1083 | if (rc) { | |
1084 | err("Adding this card exceeds the limitations of this bus.\n"); | |
1085 | err("(i.e., >1 133MHz cards running on same bus, or " | |
3fa63c7d | 1086 | ">2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1087 | err("Try hot-adding into another bus\n"); |
1088 | rc = -EINVAL; | |
1089 | goto error_nopower; | |
1090 | } | |
1091 | ||
1092 | rc = power_on(slot_cur); | |
1093 | ||
1094 | if (rc) { | |
1095 | err("something wrong when powering up... please see below for details\n"); | |
1096 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1097 | attn_off(slot_cur); | |
1098 | attn_on(slot_cur); | |
1099 | if (slot_update(&slot_cur)) { | |
1100 | attn_off(slot_cur); | |
1101 | attn_on(slot_cur); | |
1102 | rc = -ENODEV; | |
1103 | goto exit; | |
1104 | } | |
1105 | /* Check to see the error of why it failed */ | |
1106 | if ((SLOT_POWER(slot_cur->status)) && | |
1107 | !(SLOT_PWRGD(slot_cur->status))) | |
1108 | err("power fault occurred trying to power up\n"); | |
1109 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
1110 | err("bus speed mismatch occurred. please check " | |
1111 | "current bus speed and card capability\n"); | |
1112 | print_card_capability(slot_cur); | |
1113 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
1114 | err("bus mode mismatch occurred. please check " | |
1115 | "current bus mode and card capability\n"); | |
1116 | print_card_capability(slot_cur); | |
1117 | } | |
1118 | ibmphp_update_slot_info(slot_cur); | |
1119 | goto exit; | |
1120 | } | |
1121 | debug("after power_on\n"); | |
1122 | /*-----------------------debugging---------------------------*/ | |
1123 | get_cur_bus_info(&slot_cur); | |
1124 | debug("the current bus speed right after power_on = %x\n", | |
1125 | slot_cur->bus_on->current_speed); | |
1126 | /*----------------------------------------------------------*/ | |
1127 | ||
1128 | rc = slot_update(&slot_cur); | |
1129 | if (rc) | |
1130 | goto error_power; | |
1131 | ||
1132 | rc = -EINVAL; | |
1133 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1134 | err("power fault occurred trying to power up...\n"); | |
1135 | goto error_power; | |
1136 | } | |
1137 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
1138 | err("bus speed mismatch occurred. please check current bus " | |
1139 | "speed and card capability\n"); | |
1140 | print_card_capability(slot_cur); | |
1141 | goto error_power; | |
1142 | } | |
1143 | /* Don't think this case will happen after above checks... | |
1144 | * but just in case, for paranoia sake */ | |
1145 | if (!(SLOT_POWER(slot_cur->status))) { | |
1146 | err("power on failed...\n"); | |
1147 | goto error_power; | |
1148 | } | |
1149 | ||
f5afe806 | 1150 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1151 | if (!slot_cur->func) { |
1152 | /* We cannot do update_slot_info here, since no memory for | |
1153 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1154 | err("out of system memory\n"); | |
1155 | rc = -ENOMEM; | |
1156 | goto error_power; | |
1157 | } | |
1da177e4 LT |
1158 | slot_cur->func->busno = slot_cur->bus; |
1159 | slot_cur->func->device = slot_cur->device; | |
1160 | for (i = 0; i < 4; i++) | |
1161 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1162 | ||
1163 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1164 | slot_cur->bus, slot_cur->device); | |
1165 | ||
1166 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1167 | err("configure_card was unsuccessful...\n"); | |
1168 | /* true because don't need to actually deallocate resources, | |
1169 | * just remove references */ | |
1170 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1171 | debug("after unconfigure_card\n"); | |
1172 | slot_cur->func = NULL; | |
1173 | rc = -ENOMEM; | |
1174 | goto error_power; | |
1175 | } | |
1176 | ||
1177 | function = 0x00; | |
1178 | do { | |
1179 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1180 | function++); | |
1181 | if (tmp_func && !(tmp_func->dev)) | |
1182 | ibm_configure_device(tmp_func); | |
1183 | } while (tmp_func); | |
1184 | ||
1185 | attn_off(slot_cur); | |
1186 | if (slot_update(&slot_cur)) { | |
1187 | rc = -EFAULT; | |
1188 | goto exit; | |
1189 | } | |
1190 | ibmphp_print_test(); | |
1191 | rc = ibmphp_update_slot_info(slot_cur); | |
1192 | exit: | |
1193 | ibmphp_unlock_operations(); | |
1194 | return rc; | |
1195 | ||
1196 | error_nopower: | |
1197 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1198 | attn_on(slot_cur); | |
1199 | error_cont: | |
1200 | rcpr = slot_update(&slot_cur); | |
1201 | if (rcpr) { | |
1202 | rc = rcpr; | |
1203 | goto exit; | |
1204 | } | |
1205 | ibmphp_update_slot_info(slot_cur); | |
1206 | goto exit; | |
1207 | ||
1208 | error_power: | |
1209 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1210 | attn_on(slot_cur); | |
1211 | rcpr = power_off(slot_cur); | |
1212 | if (rcpr) { | |
1213 | rc = rcpr; | |
1214 | goto exit; | |
1215 | } | |
1216 | goto error_cont; | |
1217 | } | |
1218 | ||
1219 | /************************************************************** | |
1220 | * HOT REMOVING ADAPTER CARD * | |
1221 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1222 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
1223 | DISABLE POWER , * | |
1224 | **************************************************************/ | |
1225 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1226 | { | |
1227 | struct slot *slot = hotplug_slot->private; | |
1228 | int rc; | |
1229 | ||
1230 | ibmphp_lock_operations(); | |
1231 | rc = ibmphp_do_disable_slot(slot); | |
1232 | ibmphp_unlock_operations(); | |
1233 | return rc; | |
1234 | } | |
1235 | ||
1236 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1237 | { | |
1238 | int rc; | |
1239 | u8 flag; | |
1240 | ||
1241 | debug("DISABLING SLOT...\n"); | |
1242 | ||
1243 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) { | |
1244 | return -ENODEV; | |
1245 | } | |
1246 | ||
1247 | flag = slot_cur->flag; | |
dc6712d1 | 1248 | slot_cur->flag = 1; |
1da177e4 | 1249 | |
dc6712d1 | 1250 | if (flag == 1) { |
1da177e4 LT |
1251 | rc = validate(slot_cur, DISABLE); |
1252 | /* checking if powered off already & valid slot # */ | |
1253 | if (rc) | |
1254 | goto error; | |
1255 | } | |
1256 | attn_LED_blink(slot_cur); | |
1257 | ||
1258 | if (slot_cur->func == NULL) { | |
1259 | /* We need this for fncs's that were there on bootup */ | |
f5afe806 | 1260 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1261 | if (!slot_cur->func) { |
1262 | err("out of system memory\n"); | |
1263 | rc = -ENOMEM; | |
1264 | goto error; | |
1265 | } | |
1da177e4 LT |
1266 | slot_cur->func->busno = slot_cur->bus; |
1267 | slot_cur->func->device = slot_cur->device; | |
1268 | } | |
1269 | ||
1270 | ibm_unconfigure_device(slot_cur->func); | |
1271 | ||
1272 | /* If we got here from latch suddenly opening on operating card or | |
1273 | a power fault, there's no power to the card, so cannot | |
1274 | read from it to determine what resources it occupied. This operation | |
1275 | is forbidden anyhow. The best we can do is remove it from kernel | |
1276 | lists at least */ | |
1277 | ||
1278 | if (!flag) { | |
1279 | attn_off(slot_cur); | |
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1284 | slot_cur->func = NULL; | |
1285 | debug("in disable_slot. after unconfigure_card\n"); | |
1286 | if (rc) { | |
1287 | err("could not unconfigure card.\n"); | |
1288 | goto error; | |
1289 | } | |
1290 | ||
1291 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1292 | if (rc) | |
1293 | goto error; | |
1294 | ||
1295 | attn_off(slot_cur); | |
1296 | rc = slot_update(&slot_cur); | |
1297 | if (rc) | |
1298 | goto exit; | |
1299 | ||
1300 | rc = ibmphp_update_slot_info(slot_cur); | |
1301 | ibmphp_print_test(); | |
1302 | exit: | |
1303 | return rc; | |
1304 | ||
1305 | error: | |
1306 | /* Need to turn off if was blinking b4 */ | |
1307 | attn_off(slot_cur); | |
1308 | attn_on(slot_cur); | |
1309 | if (slot_update(&slot_cur)) { | |
1310 | rc = -EFAULT; | |
1311 | goto exit; | |
1312 | } | |
1313 | if (flag) | |
1314 | ibmphp_update_slot_info(slot_cur); | |
1315 | goto exit; | |
1316 | } | |
1317 | ||
1318 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1319 | .owner = THIS_MODULE, | |
1320 | .set_attention_status = set_attention_status, | |
1321 | .enable_slot = enable_slot, | |
1322 | .disable_slot = ibmphp_disable_slot, | |
1323 | .hardware_test = NULL, | |
1324 | .get_power_status = get_power_status, | |
1325 | .get_attention_status = get_attention_status, | |
1326 | .get_latch_status = get_latch_status, | |
1327 | .get_adapter_status = get_adapter_present, | |
1328 | .get_max_bus_speed = get_max_bus_speed, | |
1329 | .get_cur_bus_speed = get_cur_bus_speed, | |
1330 | /* .get_max_adapter_speed = get_max_adapter_speed, | |
1331 | .get_bus_name_status = get_bus_name, | |
1332 | */ | |
1333 | }; | |
1334 | ||
1335 | static void ibmphp_unload(void) | |
1336 | { | |
1337 | free_slots(); | |
1338 | debug("after slots\n"); | |
1339 | ibmphp_free_resources(); | |
1340 | debug("after resources\n"); | |
1341 | ibmphp_free_bus_info_queue(); | |
1342 | debug("after bus info\n"); | |
1343 | ibmphp_free_ebda_hpc_queue(); | |
1344 | debug("after ebda hpc\n"); | |
1345 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1346 | debug("after ebda pci rsrc\n"); | |
1347 | kfree(ibmphp_pci_bus); | |
1348 | } | |
1349 | ||
1350 | static int __init ibmphp_init(void) | |
1351 | { | |
1352 | struct pci_bus *bus; | |
1353 | int i = 0; | |
1354 | int rc = 0; | |
1355 | ||
1356 | init_flag = 1; | |
1357 | ||
1358 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1359 | ||
1360 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1361 | if (!ibmphp_pci_bus) { | |
1362 | err("out of memory\n"); | |
1363 | rc = -ENOMEM; | |
1364 | goto exit; | |
1365 | } | |
1366 | ||
1367 | bus = pci_find_bus(0, 0); | |
1368 | if (!bus) { | |
1369 | err("Can't find the root pci bus, can not continue\n"); | |
1370 | rc = -ENODEV; | |
1371 | goto error; | |
1372 | } | |
1373 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1374 | ||
1375 | ibmphp_debug = debug; | |
1376 | ||
1377 | ibmphp_hpc_initvars(); | |
1378 | ||
1379 | for (i = 0; i < 16; i++) | |
1380 | irqs[i] = 0; | |
1381 | ||
1382 | if ((rc = ibmphp_access_ebda())) | |
1383 | goto error; | |
1384 | debug("after ibmphp_access_ebda()\n"); | |
1385 | ||
1386 | if ((rc = ibmphp_rsrc_init())) | |
1387 | goto error; | |
1388 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1389 | ||
1390 | max_slots = get_max_slots(); | |
1391 | ||
1392 | if ((rc = ibmphp_register_pci())) | |
1393 | goto error; | |
1394 | ||
1395 | if (init_ops()) { | |
1396 | rc = -ENODEV; | |
1397 | goto error; | |
1398 | } | |
1399 | ||
1400 | ibmphp_print_test(); | |
1401 | if ((rc = ibmphp_hpc_start_poll_thread())) { | |
1402 | goto error; | |
1403 | } | |
1404 | ||
1da177e4 LT |
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); |