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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 | 155 | for (loop = 0; loop < len; loop++) { |
e20c06fd YL |
156 | if ((*cur_slot)->number == rtable->slots[loop].slot && |
157 | (*cur_slot)->bus == rtable->slots[loop].bus) { | |
e5198075 | 158 | struct io_apic_irq_attr irq_attr; |
e20c06fd | 159 | |
1da177e4 LT |
160 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); |
161 | for (i = 0; i < 4; i++) | |
162 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
b5710ce9 | 163 | (int) (*cur_slot)->device, i, |
e5198075 | 164 | &irq_attr); |
e20c06fd YL |
165 | |
166 | debug("(*cur_slot)->irq[0] = %x\n", | |
167 | (*cur_slot)->irq[0]); | |
168 | debug("(*cur_slot)->irq[1] = %x\n", | |
169 | (*cur_slot)->irq[1]); | |
170 | debug("(*cur_slot)->irq[2] = %x\n", | |
171 | (*cur_slot)->irq[2]); | |
172 | debug("(*cur_slot)->irq[3] = %x\n", | |
173 | (*cur_slot)->irq[3]); | |
174 | ||
175 | debug("rtable->exlusive_irqs = %x\n", | |
1da177e4 | 176 | rtable->exclusive_irqs); |
e20c06fd | 177 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", |
1da177e4 | 178 | rtable->slots[loop].irq[0].bitmap); |
e20c06fd | 179 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", |
1da177e4 | 180 | rtable->slots[loop].irq[1].bitmap); |
e20c06fd | 181 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", |
1da177e4 | 182 | rtable->slots[loop].irq[2].bitmap); |
e20c06fd | 183 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", |
1da177e4 LT |
184 | rtable->slots[loop].irq[3].bitmap); |
185 | ||
e20c06fd | 186 | debug("rtable->slots[loop].irq[0].link = %x\n", |
1da177e4 | 187 | rtable->slots[loop].irq[0].link); |
e20c06fd | 188 | debug("rtable->slots[loop].irq[1].link = %x\n", |
1da177e4 | 189 | rtable->slots[loop].irq[1].link); |
e20c06fd | 190 | debug("rtable->slots[loop].irq[2].link = %x\n", |
1da177e4 | 191 | rtable->slots[loop].irq[2].link); |
e20c06fd | 192 | debug("rtable->slots[loop].irq[3].link = %x\n", |
1da177e4 | 193 | rtable->slots[loop].irq[3].link); |
e20c06fd YL |
194 | debug("end of init_devno\n"); |
195 | kfree(rtable); | |
196 | return 0; | |
1da177e4 LT |
197 | } |
198 | } | |
199 | ||
029c3c13 | 200 | kfree(rtable); |
1da177e4 LT |
201 | return -1; |
202 | } | |
203 | ||
204 | static inline int power_on(struct slot *slot_cur) | |
205 | { | |
206 | u8 cmd = HPC_SLOT_ON; | |
207 | int retval; | |
208 | ||
209 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
210 | if (retval) { | |
211 | err("power on failed\n"); | |
212 | return retval; | |
213 | } | |
214 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
215 | err("command not completed successfully in power_on\n"); | |
216 | return -EIO; | |
217 | } | |
218 | msleep(3000); /* For ServeRAID cards, and some 66 PCI */ | |
219 | return 0; | |
220 | } | |
221 | ||
222 | static inline int power_off(struct slot *slot_cur) | |
223 | { | |
224 | u8 cmd = HPC_SLOT_OFF; | |
225 | int retval; | |
226 | ||
227 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
228 | if (retval) { | |
229 | err("power off failed\n"); | |
230 | return retval; | |
231 | } | |
232 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
233 | err("command not completed successfully in power_off\n"); | |
234 | retval = -EIO; | |
235 | } | |
236 | return retval; | |
237 | } | |
238 | ||
239 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value) | |
240 | { | |
241 | int rc = 0; | |
242 | struct slot *pslot; | |
072888fa | 243 | u8 cmd = 0x00; /* avoid compiler warning */ |
1da177e4 LT |
244 | |
245 | debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", | |
246 | (ulong) hotplug_slot, value); | |
247 | ibmphp_lock_operations(); | |
072888fa | 248 | |
1da177e4 LT |
249 | |
250 | if (hotplug_slot) { | |
251 | switch (value) { | |
252 | case HPC_SLOT_ATTN_OFF: | |
253 | cmd = HPC_SLOT_ATTNOFF; | |
254 | break; | |
255 | case HPC_SLOT_ATTN_ON: | |
256 | cmd = HPC_SLOT_ATTNON; | |
257 | break; | |
258 | case HPC_SLOT_ATTN_BLINK: | |
259 | cmd = HPC_SLOT_BLINKLED; | |
260 | break; | |
261 | default: | |
262 | rc = -ENODEV; | |
263 | err("set_attention_status - Error : invalid input [%x]\n", | |
264 | value); | |
265 | break; | |
266 | } | |
267 | if (rc == 0) { | |
268 | pslot = hotplug_slot->private; | |
269 | if (pslot) | |
270 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
271 | else | |
272 | rc = -ENODEV; | |
273 | } | |
274 | } else | |
275 | rc = -ENODEV; | |
276 | ||
277 | ibmphp_unlock_operations(); | |
278 | ||
279 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
280 | return rc; | |
281 | } | |
282 | ||
283 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
284 | { | |
285 | int rc = -ENODEV; | |
286 | struct slot *pslot; | |
287 | struct slot myslot; | |
288 | ||
289 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
290 | (ulong) hotplug_slot, (ulong) value); | |
291 | ||
292 | ibmphp_lock_operations(); | |
9df7fde5 | 293 | if (hotplug_slot) { |
1da177e4 LT |
294 | pslot = hotplug_slot->private; |
295 | if (pslot) { | |
296 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
297 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
298 | &(myslot.status)); | |
299 | if (!rc) | |
300 | rc = ibmphp_hpc_readslot(pslot, | |
301 | READ_EXTSLOTSTATUS, | |
302 | &(myslot.ext_status)); | |
303 | if (!rc) | |
304 | *value = SLOT_ATTN(myslot.status, | |
305 | myslot.ext_status); | |
306 | } | |
307 | } | |
308 | ||
309 | ibmphp_unlock_operations(); | |
310 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
311 | return rc; | |
312 | } | |
313 | ||
314 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
315 | { | |
316 | int rc = -ENODEV; | |
317 | struct slot *pslot; | |
318 | struct slot myslot; | |
319 | ||
320 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
321 | (ulong) hotplug_slot, (ulong) value); | |
322 | ibmphp_lock_operations(); | |
9df7fde5 | 323 | if (hotplug_slot) { |
1da177e4 LT |
324 | pslot = hotplug_slot->private; |
325 | if (pslot) { | |
326 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
327 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
328 | &(myslot.status)); | |
329 | if (!rc) | |
330 | *value = SLOT_LATCH(myslot.status); | |
331 | } | |
332 | } | |
333 | ||
334 | ibmphp_unlock_operations(); | |
335 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
336 | rc, rc, *value); | |
337 | return rc; | |
338 | } | |
339 | ||
340 | ||
341 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value) | |
342 | { | |
343 | int rc = -ENODEV; | |
344 | struct slot *pslot; | |
345 | struct slot myslot; | |
346 | ||
347 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
348 | (ulong) hotplug_slot, (ulong) value); | |
349 | ibmphp_lock_operations(); | |
9df7fde5 | 350 | if (hotplug_slot) { |
1da177e4 LT |
351 | pslot = hotplug_slot->private; |
352 | if (pslot) { | |
353 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
354 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
355 | &(myslot.status)); | |
356 | if (!rc) | |
357 | *value = SLOT_PWRGD(myslot.status); | |
358 | } | |
359 | } | |
360 | ||
361 | ibmphp_unlock_operations(); | |
362 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
363 | rc, rc, *value); | |
364 | return rc; | |
365 | } | |
366 | ||
367 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value) | |
368 | { | |
369 | int rc = -ENODEV; | |
370 | struct slot *pslot; | |
371 | u8 present; | |
372 | struct slot myslot; | |
373 | ||
374 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
375 | (ulong) hotplug_slot, (ulong) value); | |
376 | ibmphp_lock_operations(); | |
9df7fde5 | 377 | if (hotplug_slot) { |
1da177e4 LT |
378 | pslot = hotplug_slot->private; |
379 | if (pslot) { | |
380 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
381 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
382 | &(myslot.status)); | |
383 | if (!rc) { | |
384 | present = SLOT_PRESENT(myslot.status); | |
385 | if (present == HPC_SLOT_EMPTY) | |
386 | *value = 0; | |
387 | else | |
388 | *value = 1; | |
389 | } | |
390 | } | |
391 | } | |
392 | ||
393 | ibmphp_unlock_operations(); | |
394 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
395 | return rc; | |
396 | } | |
397 | ||
3749c51a | 398 | static int get_max_bus_speed(struct slot *slot) |
1da177e4 | 399 | { |
3749c51a | 400 | int rc; |
1da177e4 | 401 | u8 mode = 0; |
3749c51a MW |
402 | enum pci_bus_speed speed; |
403 | struct pci_bus *bus = slot->hotplug_slot->pci_slot->bus; | |
1da177e4 | 404 | |
3749c51a | 405 | debug("%s - Entry slot[%p]\n", __func__, slot); |
1da177e4 LT |
406 | |
407 | ibmphp_lock_operations(); | |
3749c51a MW |
408 | mode = slot->supported_bus_mode; |
409 | speed = slot->supported_speed; | |
1da177e4 | 410 | ibmphp_unlock_operations(); |
1da177e4 | 411 | |
3749c51a MW |
412 | switch (speed) { |
413 | case BUS_SPEED_33: | |
414 | break; | |
415 | case BUS_SPEED_66: | |
416 | if (mode == BUS_MODE_PCIX) | |
417 | speed += 0x01; | |
418 | break; | |
419 | case BUS_SPEED_100: | |
420 | case BUS_SPEED_133: | |
421 | speed += 0x01; | |
422 | break; | |
423 | default: | |
424 | /* Note (will need to change): there would be soon 256, 512 also */ | |
425 | rc = -ENODEV; | |
1da177e4 LT |
426 | } |
427 | ||
3749c51a MW |
428 | if (!rc) |
429 | bus->max_bus_speed = speed; | |
430 | ||
431 | debug("%s - Exit rc[%d] speed[%x]\n", __func__, rc, speed); | |
1da177e4 LT |
432 | return rc; |
433 | } | |
434 | ||
435 | /* | |
436 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 * value, u8 flag) | |
437 | { | |
438 | int rc = -ENODEV; | |
439 | struct slot *pslot; | |
440 | struct slot myslot; | |
441 | ||
442 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
443 | (ulong)hotplug_slot, (ulong) value); | |
444 | ||
445 | if (flag) | |
446 | ibmphp_lock_operations(); | |
447 | ||
448 | if (hotplug_slot && value) { | |
449 | pslot = hotplug_slot->private; | |
450 | if (pslot) { | |
451 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
452 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
453 | &(myslot.status)); | |
454 | ||
455 | if (!(SLOT_LATCH (myslot.status)) && | |
456 | (SLOT_PRESENT (myslot.status))) { | |
457 | rc = ibmphp_hpc_readslot(pslot, | |
458 | READ_EXTSLOTSTATUS, | |
459 | &(myslot.ext_status)); | |
460 | if (!rc) | |
461 | *value = SLOT_SPEED(myslot.ext_status); | |
462 | } else | |
463 | *value = MAX_ADAPTER_NONE; | |
464 | } | |
465 | } | |
466 | ||
467 | if (flag) | |
468 | ibmphp_unlock_operations(); | |
469 | ||
470 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
471 | return rc; | |
472 | } | |
473 | ||
474 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char * value) | |
475 | { | |
476 | int rc = -ENODEV; | |
477 | struct slot *pslot = NULL; | |
478 | ||
479 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
480 | ||
481 | ibmphp_lock_operations(); | |
482 | ||
483 | if (hotplug_slot) { | |
484 | pslot = hotplug_slot->private; | |
485 | if (pslot) { | |
486 | rc = 0; | |
487 | snprintf(value, 100, "Bus %x", pslot->bus); | |
488 | } | |
489 | } else | |
490 | rc = -ENODEV; | |
491 | ||
492 | ibmphp_unlock_operations(); | |
493 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
494 | return rc; | |
495 | } | |
496 | */ | |
497 | ||
498 | /**************************************************************************** | |
499 | * This routine will initialize the ops data structure used in the validate | |
500 | * function. It will also power off empty slots that are powered on since BIOS | |
501 | * leaves those on, albeit disconnected | |
502 | ****************************************************************************/ | |
503 | static int __init init_ops(void) | |
504 | { | |
505 | struct slot *slot_cur; | |
506 | struct list_head *tmp; | |
507 | int retval; | |
508 | int rc; | |
509 | ||
510 | list_for_each(tmp, &ibmphp_slot_head) { | |
511 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
512 | ||
513 | if (!slot_cur) | |
514 | return -ENODEV; | |
515 | ||
516 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", | |
517 | slot_cur->number); | |
518 | if (slot_cur->ctrl->revision == 0xFF) | |
519 | if (get_ctrl_revision(slot_cur, | |
520 | &slot_cur->ctrl->revision)) | |
521 | return -1; | |
522 | ||
523 | if (slot_cur->bus_on->current_speed == 0xFF) | |
524 | if (get_cur_bus_info(&slot_cur)) | |
525 | return -1; | |
3749c51a | 526 | get_max_bus_speed(slot_cur); |
1da177e4 LT |
527 | |
528 | if (slot_cur->ctrl->options == 0xFF) | |
529 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
530 | return -1; | |
531 | ||
532 | retval = slot_update(&slot_cur); | |
533 | if (retval) | |
534 | return retval; | |
535 | ||
536 | debug("status = %x\n", slot_cur->status); | |
537 | debug("ext_status = %x\n", slot_cur->ext_status); | |
538 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
539 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
540 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
541 | ||
542 | if ((SLOT_PWRGD(slot_cur->status)) && | |
543 | !(SLOT_PRESENT(slot_cur->status)) && | |
544 | !(SLOT_LATCH(slot_cur->status))) { | |
545 | debug("BEFORE POWER OFF COMMAND\n"); | |
546 | rc = power_off(slot_cur); | |
547 | if (rc) | |
548 | return rc; | |
549 | ||
550 | /* retval = slot_update(&slot_cur); | |
551 | * if (retval) | |
552 | * return retval; | |
553 | * ibmphp_update_slot_info(slot_cur); | |
554 | */ | |
555 | } | |
556 | } | |
557 | init_flag = 0; | |
558 | return 0; | |
559 | } | |
560 | ||
561 | /* This operation will check whether the slot is within the bounds and | |
562 | * the operation is valid to perform on that slot | |
563 | * Parameters: slot, operation | |
564 | * Returns: 0 or error codes | |
565 | */ | |
566 | static int validate(struct slot *slot_cur, int opn) | |
567 | { | |
568 | int number; | |
569 | int retval; | |
570 | ||
571 | if (!slot_cur) | |
572 | return -ENODEV; | |
573 | number = slot_cur->number; | |
574 | if ((number > max_slots) || (number < 0)) | |
575 | return -EBADSLT; | |
576 | debug("slot_number in validate is %d\n", slot_cur->number); | |
577 | ||
578 | retval = slot_update(&slot_cur); | |
579 | if (retval) | |
580 | return retval; | |
581 | ||
582 | switch (opn) { | |
583 | case ENABLE: | |
584 | if (!(SLOT_PWRGD(slot_cur->status)) && | |
585 | (SLOT_PRESENT(slot_cur->status)) && | |
586 | !(SLOT_LATCH(slot_cur->status))) | |
587 | return 0; | |
588 | break; | |
589 | case DISABLE: | |
590 | if ((SLOT_PWRGD(slot_cur->status)) && | |
591 | (SLOT_PRESENT(slot_cur->status)) && | |
592 | !(SLOT_LATCH(slot_cur->status))) | |
593 | return 0; | |
594 | break; | |
595 | default: | |
596 | break; | |
597 | } | |
598 | err("validate failed....\n"); | |
599 | return -EINVAL; | |
600 | } | |
601 | ||
602 | /**************************************************************************** | |
603 | * This routine is for updating the data structures in the hotplug core | |
604 | * Parameters: struct slot | |
605 | * Returns: 0 or error | |
606 | ****************************************************************************/ | |
607 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
608 | { | |
609 | struct hotplug_slot_info *info; | |
3749c51a | 610 | struct pci_bus *bus = slot_cur->hotplug_slot->pci_slot->bus; |
1da177e4 LT |
611 | int rc; |
612 | u8 bus_speed; | |
613 | u8 mode; | |
614 | ||
615 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
616 | if (!info) { | |
617 | err("out of system memory\n"); | |
618 | return -ENOMEM; | |
619 | } | |
620 | ||
621 | info->power_status = SLOT_PWRGD(slot_cur->status); | |
622 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
623 | slot_cur->ext_status); | |
624 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
625 | if (!SLOT_PRESENT(slot_cur->status)) { | |
626 | info->adapter_status = 0; | |
627 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ | |
628 | } else { | |
629 | info->adapter_status = 1; | |
630 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, | |
631 | &info->max_adapter_speed_status, 0); */ | |
632 | } | |
633 | ||
634 | bus_speed = slot_cur->bus_on->current_speed; | |
635 | mode = slot_cur->bus_on->current_bus_mode; | |
636 | ||
637 | switch (bus_speed) { | |
638 | case BUS_SPEED_33: | |
639 | break; | |
640 | case BUS_SPEED_66: | |
641 | if (mode == BUS_MODE_PCIX) | |
642 | bus_speed += 0x01; | |
643 | else if (mode == BUS_MODE_PCI) | |
644 | ; | |
645 | else | |
646 | bus_speed = PCI_SPEED_UNKNOWN; | |
647 | break; | |
648 | case BUS_SPEED_100: | |
649 | case BUS_SPEED_133: | |
650 | bus_speed += 0x01; | |
651 | break; | |
652 | default: | |
653 | bus_speed = PCI_SPEED_UNKNOWN; | |
654 | } | |
655 | ||
3749c51a | 656 | bus->cur_bus_speed = bus_speed; |
1da177e4 LT |
657 | // To do: bus_names |
658 | ||
659 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); | |
660 | kfree(info); | |
661 | return rc; | |
662 | } | |
663 | ||
664 | ||
665 | /****************************************************************************** | |
666 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
667 | * is called from visit routines | |
668 | ******************************************************************************/ | |
669 | ||
670 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
671 | { | |
672 | struct pci_func *func_cur; | |
673 | struct slot *slot_cur; | |
674 | struct list_head * tmp; | |
675 | list_for_each(tmp, &ibmphp_slot_head) { | |
676 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
677 | if (slot_cur->func) { | |
678 | func_cur = slot_cur->func; | |
679 | while (func_cur) { | |
680 | if ((func_cur->busno == busno) && | |
681 | (func_cur->device == device) && | |
682 | (func_cur->function == function)) | |
683 | return func_cur; | |
684 | func_cur = func_cur->next; | |
685 | } | |
686 | } | |
687 | } | |
688 | return NULL; | |
689 | } | |
690 | ||
691 | /************************************************************* | |
692 | * This routine frees up memory used by struct slot, including | |
693 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
694 | * and deregistering from the hotplug core | |
695 | *************************************************************/ | |
696 | static void free_slots(void) | |
697 | { | |
698 | struct slot *slot_cur; | |
699 | struct list_head * tmp; | |
700 | struct list_head * next; | |
701 | ||
66bef8c0 | 702 | debug("%s -- enter\n", __func__); |
1da177e4 LT |
703 | |
704 | list_for_each_safe(tmp, next, &ibmphp_slot_head) { | |
705 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
706 | pci_hp_deregister(slot_cur->hotplug_slot); | |
707 | } | |
66bef8c0 | 708 | debug("%s -- exit\n", __func__); |
1da177e4 LT |
709 | } |
710 | ||
711 | static void ibm_unconfigure_device(struct pci_func *func) | |
712 | { | |
713 | struct pci_dev *temp; | |
714 | u8 j; | |
715 | ||
66bef8c0 | 716 | debug("inside %s\n", __func__); |
1da177e4 LT |
717 | debug("func->device = %x, func->function = %x\n", |
718 | func->device, func->function); | |
719 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
720 | ||
721 | for (j = 0; j < 0x08; j++) { | |
f362b8bf JP |
722 | temp = pci_get_bus_and_slot(func->busno, (func->device << 3) | j); |
723 | if (temp) { | |
1da177e4 | 724 | pci_remove_bus_device(temp); |
f362b8bf JP |
725 | pci_dev_put(temp); |
726 | } | |
1da177e4 | 727 | } |
f362b8bf | 728 | pci_dev_put(func->dev); |
1da177e4 LT |
729 | } |
730 | ||
731 | /* | |
732 | * The following function is to fix kernel bug regarding | |
733 | * getting bus entries, here we manually add those primary | |
734 | * bus entries to kernel bus structure whenever apply | |
735 | */ | |
736 | static u8 bus_structure_fixup(u8 busno) | |
737 | { | |
738 | struct pci_bus *bus; | |
739 | struct pci_dev *dev; | |
740 | u16 l; | |
741 | ||
742 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
743 | return 1; | |
744 | ||
745 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
746 | if (!bus) { | |
66bef8c0 | 747 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
748 | return 1; |
749 | } | |
750 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
751 | if (!dev) { | |
752 | kfree(bus); | |
66bef8c0 | 753 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
754 | return 1; |
755 | } | |
756 | ||
757 | bus->number = busno; | |
758 | bus->ops = ibmphp_pci_bus->ops; | |
759 | dev->bus = bus; | |
760 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
761 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
762 | (l != 0x0000) && (l != 0xffff)) { | |
763 | debug("%s - Inside bus_struture_fixup()\n", | |
66bef8c0 | 764 | __func__); |
1da177e4 LT |
765 | pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); |
766 | break; | |
767 | } | |
768 | } | |
769 | ||
770 | kfree(dev); | |
771 | kfree(bus); | |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
776 | static int ibm_configure_device(struct pci_func *func) | |
777 | { | |
778 | unsigned char bus; | |
779 | struct pci_bus *child; | |
780 | int num; | |
781 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
782 | for bridged devices primarily */ | |
783 | ||
784 | if (!(bus_structure_fixup(func->busno))) | |
785 | flag = 1; | |
786 | if (func->dev == NULL) | |
f362b8bf | 787 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
788 | PCI_DEVFN(func->device, func->function)); |
789 | ||
790 | if (func->dev == NULL) { | |
791 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
792 | if (!bus) | |
793 | return 0; | |
794 | ||
795 | num = pci_scan_slot(bus, | |
796 | PCI_DEVFN(func->device, func->function)); | |
797 | if (num) | |
798 | pci_bus_add_devices(bus); | |
799 | ||
f362b8bf | 800 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
801 | PCI_DEVFN(func->device, func->function)); |
802 | if (func->dev == NULL) { | |
803 | err("ERROR... : pci_dev still NULL\n"); | |
804 | return 0; | |
805 | } | |
806 | } | |
807 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
808 | pci_read_config_byte(func->dev, PCI_SECONDARY_BUS, &bus); | |
809 | child = pci_add_new_bus(func->dev->bus, func->dev, bus); | |
810 | pci_do_scan_bus(child); | |
811 | } | |
812 | ||
813 | return 0; | |
814 | } | |
815 | ||
816 | /******************************************************* | |
817 | * Returns whether the bus is empty or not | |
818 | *******************************************************/ | |
819 | static int is_bus_empty(struct slot * slot_cur) | |
820 | { | |
821 | int rc; | |
822 | struct slot * tmp_slot; | |
823 | u8 i = slot_cur->bus_on->slot_min; | |
824 | ||
825 | while (i <= slot_cur->bus_on->slot_max) { | |
826 | if (i == slot_cur->number) { | |
827 | i++; | |
828 | continue; | |
829 | } | |
830 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
831 | if (!tmp_slot) | |
832 | return 0; | |
833 | rc = slot_update(&tmp_slot); | |
834 | if (rc) | |
835 | return 0; | |
836 | if (SLOT_PRESENT(tmp_slot->status) && | |
837 | SLOT_PWRGD(tmp_slot->status)) | |
838 | return 0; | |
839 | i++; | |
840 | } | |
841 | return 1; | |
842 | } | |
843 | ||
844 | /*********************************************************** | |
845 | * If the HPC permits and the bus currently empty, tries to set the | |
846 | * bus speed and mode at the maximum card and bus capability | |
847 | * Parameters: slot | |
848 | * Returns: bus is set (0) or error code | |
849 | ***********************************************************/ | |
850 | static int set_bus(struct slot * slot_cur) | |
851 | { | |
852 | int rc; | |
853 | u8 speed; | |
854 | u8 cmd = 0x0; | |
855 | int retval; | |
856 | static struct pci_device_id ciobx[] = { | |
857 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, | |
858 | { }, | |
859 | }; | |
860 | ||
66bef8c0 | 861 | debug("%s - entry slot # %d\n", __func__, slot_cur->number); |
1da177e4 LT |
862 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { |
863 | rc = slot_update(&slot_cur); | |
864 | if (rc) | |
865 | return rc; | |
866 | speed = SLOT_SPEED(slot_cur->ext_status); | |
867 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
868 | switch (speed) { | |
869 | case HPC_SLOT_SPEED_33: | |
870 | cmd = HPC_BUS_33CONVMODE; | |
871 | break; | |
872 | case HPC_SLOT_SPEED_66: | |
873 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
874 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
875 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
876 | cmd = HPC_BUS_66PCIXMODE; | |
877 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
878 | /* if max slot/bus capability is 66 pci | |
879 | and there's no bus mode mismatch, then | |
880 | the adapter supports 66 pci */ | |
881 | cmd = HPC_BUS_66CONVMODE; | |
882 | else | |
883 | cmd = HPC_BUS_33CONVMODE; | |
884 | } else { | |
885 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
886 | cmd = HPC_BUS_66CONVMODE; | |
887 | else | |
888 | cmd = HPC_BUS_33CONVMODE; | |
889 | } | |
890 | break; | |
891 | case HPC_SLOT_SPEED_133: | |
892 | switch (slot_cur->supported_speed) { | |
893 | case BUS_SPEED_33: | |
894 | cmd = HPC_BUS_33CONVMODE; | |
895 | break; | |
896 | case BUS_SPEED_66: | |
897 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
898 | cmd = HPC_BUS_66PCIXMODE; | |
899 | else | |
900 | cmd = HPC_BUS_66CONVMODE; | |
901 | break; | |
902 | case BUS_SPEED_100: | |
903 | cmd = HPC_BUS_100PCIXMODE; | |
904 | break; | |
905 | case BUS_SPEED_133: | |
906 | /* This is to take care of the bug in CIOBX chip */ | |
907 | if (pci_dev_present(ciobx)) | |
908 | ibmphp_hpc_writeslot(slot_cur, | |
909 | HPC_BUS_100PCIXMODE); | |
910 | cmd = HPC_BUS_133PCIXMODE; | |
911 | break; | |
912 | default: | |
913 | err("Wrong bus speed\n"); | |
914 | return -ENODEV; | |
915 | } | |
916 | break; | |
917 | default: | |
918 | err("wrong slot speed\n"); | |
919 | return -ENODEV; | |
920 | } | |
921 | debug("setting bus speed for slot %d, cmd %x\n", | |
922 | slot_cur->number, cmd); | |
923 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
924 | if (retval) { | |
925 | err("setting bus speed failed\n"); | |
926 | return retval; | |
927 | } | |
928 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
929 | err("command not completed successfully in set_bus\n"); | |
930 | return -EIO; | |
931 | } | |
932 | } | |
933 | /* This is for x440, once Brandon fixes the firmware, | |
934 | will not need this delay */ | |
935 | msleep(1000); | |
66bef8c0 | 936 | debug("%s -Exit\n", __func__); |
1da177e4 LT |
937 | return 0; |
938 | } | |
939 | ||
940 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
941 | * This is used in deciding whether or not to power up the slot. | |
942 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on | |
943 | * same bus) | |
944 | * Parameters: slot | |
945 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
946 | */ | |
947 | static int check_limitations(struct slot *slot_cur) | |
948 | { | |
949 | u8 i; | |
950 | struct slot * tmp_slot; | |
951 | u8 count = 0; | |
952 | u8 limitation = 0; | |
953 | ||
954 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
955 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
956 | if (!tmp_slot) | |
957 | return -ENODEV; | |
958 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
959 | !(SLOT_CONNECT(tmp_slot->status))) | |
960 | count++; | |
961 | } | |
962 | get_cur_bus_info(&slot_cur); | |
963 | switch (slot_cur->bus_on->current_speed) { | |
964 | case BUS_SPEED_33: | |
965 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
966 | break; | |
967 | case BUS_SPEED_66: | |
968 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
969 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
970 | else | |
971 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
972 | break; | |
973 | case BUS_SPEED_100: | |
974 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
975 | break; | |
976 | case BUS_SPEED_133: | |
977 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
978 | break; | |
979 | } | |
980 | ||
981 | if ((count + 1) > limitation) | |
982 | return -EINVAL; | |
983 | return 0; | |
984 | } | |
985 | ||
986 | static inline void print_card_capability(struct slot *slot_cur) | |
987 | { | |
988 | info("capability of the card is "); | |
989 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) | |
990 | info(" 133 MHz PCI-X\n"); | |
991 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
992 | info(" 66 MHz PCI-X\n"); | |
993 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
994 | info(" 66 MHz PCI\n"); | |
995 | else | |
996 | info(" 33 MHz PCI\n"); | |
997 | ||
998 | } | |
999 | ||
1000 | /* This routine will power on the slot, configure the device(s) and find the | |
1001 | * drivers for them. | |
1002 | * Parameters: hotplug_slot | |
1003 | * Returns: 0 or failure codes | |
1004 | */ | |
1005 | static int enable_slot(struct hotplug_slot *hs) | |
1006 | { | |
1007 | int rc, i, rcpr; | |
1008 | struct slot *slot_cur; | |
1009 | u8 function; | |
1010 | struct pci_func *tmp_func; | |
1011 | ||
1012 | ibmphp_lock_operations(); | |
1013 | ||
1014 | debug("ENABLING SLOT........\n"); | |
1015 | slot_cur = hs->private; | |
1016 | ||
1017 | if ((rc = validate(slot_cur, ENABLE))) { | |
1018 | err("validate function failed\n"); | |
1019 | goto error_nopower; | |
1020 | } | |
1021 | ||
1022 | attn_LED_blink(slot_cur); | |
1023 | ||
1024 | rc = set_bus(slot_cur); | |
1025 | if (rc) { | |
1026 | err("was not able to set the bus\n"); | |
1027 | goto error_nopower; | |
1028 | } | |
1029 | ||
1030 | /*-----------------debugging------------------------------*/ | |
1031 | get_cur_bus_info(&slot_cur); | |
1032 | debug("the current bus speed right after set_bus = %x\n", | |
1033 | slot_cur->bus_on->current_speed); | |
1034 | /*----------------------------------------------------------*/ | |
1035 | ||
1036 | rc = check_limitations(slot_cur); | |
1037 | if (rc) { | |
1038 | err("Adding this card exceeds the limitations of this bus.\n"); | |
1039 | err("(i.e., >1 133MHz cards running on same bus, or " | |
3fa63c7d | 1040 | ">2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1041 | err("Try hot-adding into another bus\n"); |
1042 | rc = -EINVAL; | |
1043 | goto error_nopower; | |
1044 | } | |
1045 | ||
1046 | rc = power_on(slot_cur); | |
1047 | ||
1048 | if (rc) { | |
1049 | err("something wrong when powering up... please see below for details\n"); | |
1050 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1051 | attn_off(slot_cur); | |
1052 | attn_on(slot_cur); | |
1053 | if (slot_update(&slot_cur)) { | |
1054 | attn_off(slot_cur); | |
1055 | attn_on(slot_cur); | |
1056 | rc = -ENODEV; | |
1057 | goto exit; | |
1058 | } | |
1059 | /* Check to see the error of why it failed */ | |
1060 | if ((SLOT_POWER(slot_cur->status)) && | |
1061 | !(SLOT_PWRGD(slot_cur->status))) | |
1062 | err("power fault occurred trying to power up\n"); | |
1063 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
1064 | err("bus speed mismatch occurred. please check " | |
1065 | "current bus speed and card capability\n"); | |
1066 | print_card_capability(slot_cur); | |
1067 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
1068 | err("bus mode mismatch occurred. please check " | |
1069 | "current bus mode and card capability\n"); | |
1070 | print_card_capability(slot_cur); | |
1071 | } | |
1072 | ibmphp_update_slot_info(slot_cur); | |
1073 | goto exit; | |
1074 | } | |
1075 | debug("after power_on\n"); | |
1076 | /*-----------------------debugging---------------------------*/ | |
1077 | get_cur_bus_info(&slot_cur); | |
1078 | debug("the current bus speed right after power_on = %x\n", | |
1079 | slot_cur->bus_on->current_speed); | |
1080 | /*----------------------------------------------------------*/ | |
1081 | ||
1082 | rc = slot_update(&slot_cur); | |
1083 | if (rc) | |
1084 | goto error_power; | |
1085 | ||
1086 | rc = -EINVAL; | |
1087 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1088 | err("power fault occurred trying to power up...\n"); | |
1089 | goto error_power; | |
1090 | } | |
1091 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
1092 | err("bus speed mismatch occurred. please check current bus " | |
1093 | "speed and card capability\n"); | |
1094 | print_card_capability(slot_cur); | |
1095 | goto error_power; | |
1096 | } | |
1097 | /* Don't think this case will happen after above checks... | |
1098 | * but just in case, for paranoia sake */ | |
1099 | if (!(SLOT_POWER(slot_cur->status))) { | |
1100 | err("power on failed...\n"); | |
1101 | goto error_power; | |
1102 | } | |
1103 | ||
f5afe806 | 1104 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1105 | if (!slot_cur->func) { |
1106 | /* We cannot do update_slot_info here, since no memory for | |
1107 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1108 | err("out of system memory\n"); | |
1109 | rc = -ENOMEM; | |
1110 | goto error_power; | |
1111 | } | |
1da177e4 LT |
1112 | slot_cur->func->busno = slot_cur->bus; |
1113 | slot_cur->func->device = slot_cur->device; | |
1114 | for (i = 0; i < 4; i++) | |
1115 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1116 | ||
1117 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1118 | slot_cur->bus, slot_cur->device); | |
1119 | ||
1120 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1121 | err("configure_card was unsuccessful...\n"); | |
1122 | /* true because don't need to actually deallocate resources, | |
1123 | * just remove references */ | |
1124 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1125 | debug("after unconfigure_card\n"); | |
1126 | slot_cur->func = NULL; | |
1127 | rc = -ENOMEM; | |
1128 | goto error_power; | |
1129 | } | |
1130 | ||
1131 | function = 0x00; | |
1132 | do { | |
1133 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1134 | function++); | |
1135 | if (tmp_func && !(tmp_func->dev)) | |
1136 | ibm_configure_device(tmp_func); | |
1137 | } while (tmp_func); | |
1138 | ||
1139 | attn_off(slot_cur); | |
1140 | if (slot_update(&slot_cur)) { | |
1141 | rc = -EFAULT; | |
1142 | goto exit; | |
1143 | } | |
1144 | ibmphp_print_test(); | |
1145 | rc = ibmphp_update_slot_info(slot_cur); | |
1146 | exit: | |
1147 | ibmphp_unlock_operations(); | |
1148 | return rc; | |
1149 | ||
1150 | error_nopower: | |
1151 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1152 | attn_on(slot_cur); | |
1153 | error_cont: | |
1154 | rcpr = slot_update(&slot_cur); | |
1155 | if (rcpr) { | |
1156 | rc = rcpr; | |
1157 | goto exit; | |
1158 | } | |
1159 | ibmphp_update_slot_info(slot_cur); | |
1160 | goto exit; | |
1161 | ||
1162 | error_power: | |
1163 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1164 | attn_on(slot_cur); | |
1165 | rcpr = power_off(slot_cur); | |
1166 | if (rcpr) { | |
1167 | rc = rcpr; | |
1168 | goto exit; | |
1169 | } | |
1170 | goto error_cont; | |
1171 | } | |
1172 | ||
1173 | /************************************************************** | |
1174 | * HOT REMOVING ADAPTER CARD * | |
1175 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1176 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
1177 | DISABLE POWER , * | |
1178 | **************************************************************/ | |
1179 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1180 | { | |
1181 | struct slot *slot = hotplug_slot->private; | |
1182 | int rc; | |
1183 | ||
1184 | ibmphp_lock_operations(); | |
1185 | rc = ibmphp_do_disable_slot(slot); | |
1186 | ibmphp_unlock_operations(); | |
1187 | return rc; | |
1188 | } | |
1189 | ||
1190 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1191 | { | |
1192 | int rc; | |
1193 | u8 flag; | |
1194 | ||
1195 | debug("DISABLING SLOT...\n"); | |
1196 | ||
1197 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) { | |
1198 | return -ENODEV; | |
1199 | } | |
1200 | ||
1201 | flag = slot_cur->flag; | |
dc6712d1 | 1202 | slot_cur->flag = 1; |
1da177e4 | 1203 | |
dc6712d1 | 1204 | if (flag == 1) { |
1da177e4 LT |
1205 | rc = validate(slot_cur, DISABLE); |
1206 | /* checking if powered off already & valid slot # */ | |
1207 | if (rc) | |
1208 | goto error; | |
1209 | } | |
1210 | attn_LED_blink(slot_cur); | |
1211 | ||
1212 | if (slot_cur->func == NULL) { | |
1213 | /* We need this for fncs's that were there on bootup */ | |
f5afe806 | 1214 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1215 | if (!slot_cur->func) { |
1216 | err("out of system memory\n"); | |
1217 | rc = -ENOMEM; | |
1218 | goto error; | |
1219 | } | |
1da177e4 LT |
1220 | slot_cur->func->busno = slot_cur->bus; |
1221 | slot_cur->func->device = slot_cur->device; | |
1222 | } | |
1223 | ||
1224 | ibm_unconfigure_device(slot_cur->func); | |
1225 | ||
1226 | /* If we got here from latch suddenly opening on operating card or | |
1227 | a power fault, there's no power to the card, so cannot | |
1228 | read from it to determine what resources it occupied. This operation | |
1229 | is forbidden anyhow. The best we can do is remove it from kernel | |
1230 | lists at least */ | |
1231 | ||
1232 | if (!flag) { | |
1233 | attn_off(slot_cur); | |
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1238 | slot_cur->func = NULL; | |
1239 | debug("in disable_slot. after unconfigure_card\n"); | |
1240 | if (rc) { | |
1241 | err("could not unconfigure card.\n"); | |
1242 | goto error; | |
1243 | } | |
1244 | ||
1245 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1246 | if (rc) | |
1247 | goto error; | |
1248 | ||
1249 | attn_off(slot_cur); | |
1250 | rc = slot_update(&slot_cur); | |
1251 | if (rc) | |
1252 | goto exit; | |
1253 | ||
1254 | rc = ibmphp_update_slot_info(slot_cur); | |
1255 | ibmphp_print_test(); | |
1256 | exit: | |
1257 | return rc; | |
1258 | ||
1259 | error: | |
1260 | /* Need to turn off if was blinking b4 */ | |
1261 | attn_off(slot_cur); | |
1262 | attn_on(slot_cur); | |
1263 | if (slot_update(&slot_cur)) { | |
1264 | rc = -EFAULT; | |
1265 | goto exit; | |
1266 | } | |
1267 | if (flag) | |
1268 | ibmphp_update_slot_info(slot_cur); | |
1269 | goto exit; | |
1270 | } | |
1271 | ||
1272 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1da177e4 LT |
1273 | .set_attention_status = set_attention_status, |
1274 | .enable_slot = enable_slot, | |
1275 | .disable_slot = ibmphp_disable_slot, | |
1276 | .hardware_test = NULL, | |
1277 | .get_power_status = get_power_status, | |
1278 | .get_attention_status = get_attention_status, | |
1279 | .get_latch_status = get_latch_status, | |
1280 | .get_adapter_status = get_adapter_present, | |
1da177e4 LT |
1281 | /* .get_max_adapter_speed = get_max_adapter_speed, |
1282 | .get_bus_name_status = get_bus_name, | |
1283 | */ | |
1284 | }; | |
1285 | ||
1286 | static void ibmphp_unload(void) | |
1287 | { | |
1288 | free_slots(); | |
1289 | debug("after slots\n"); | |
1290 | ibmphp_free_resources(); | |
1291 | debug("after resources\n"); | |
1292 | ibmphp_free_bus_info_queue(); | |
1293 | debug("after bus info\n"); | |
1294 | ibmphp_free_ebda_hpc_queue(); | |
1295 | debug("after ebda hpc\n"); | |
1296 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1297 | debug("after ebda pci rsrc\n"); | |
1298 | kfree(ibmphp_pci_bus); | |
1299 | } | |
1300 | ||
1301 | static int __init ibmphp_init(void) | |
1302 | { | |
1303 | struct pci_bus *bus; | |
1304 | int i = 0; | |
1305 | int rc = 0; | |
1306 | ||
1307 | init_flag = 1; | |
1308 | ||
1309 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1310 | ||
1311 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1312 | if (!ibmphp_pci_bus) { | |
1313 | err("out of memory\n"); | |
1314 | rc = -ENOMEM; | |
1315 | goto exit; | |
1316 | } | |
1317 | ||
1318 | bus = pci_find_bus(0, 0); | |
1319 | if (!bus) { | |
1320 | err("Can't find the root pci bus, can not continue\n"); | |
1321 | rc = -ENODEV; | |
1322 | goto error; | |
1323 | } | |
1324 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1325 | ||
1326 | ibmphp_debug = debug; | |
1327 | ||
1328 | ibmphp_hpc_initvars(); | |
1329 | ||
1330 | for (i = 0; i < 16; i++) | |
1331 | irqs[i] = 0; | |
1332 | ||
1333 | if ((rc = ibmphp_access_ebda())) | |
1334 | goto error; | |
1335 | debug("after ibmphp_access_ebda()\n"); | |
1336 | ||
1337 | if ((rc = ibmphp_rsrc_init())) | |
1338 | goto error; | |
1339 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1340 | ||
1341 | max_slots = get_max_slots(); | |
1342 | ||
1343 | if ((rc = ibmphp_register_pci())) | |
1344 | goto error; | |
1345 | ||
1346 | if (init_ops()) { | |
1347 | rc = -ENODEV; | |
1348 | goto error; | |
1349 | } | |
1350 | ||
1351 | ibmphp_print_test(); | |
1352 | if ((rc = ibmphp_hpc_start_poll_thread())) { | |
1353 | goto error; | |
1354 | } | |
1355 | ||
1da177e4 LT |
1356 | exit: |
1357 | return rc; | |
1358 | ||
1359 | error: | |
1360 | ibmphp_unload(); | |
1361 | goto exit; | |
1362 | } | |
1363 | ||
1364 | static void __exit ibmphp_exit(void) | |
1365 | { | |
1366 | ibmphp_hpc_stop_poll_thread(); | |
1367 | debug("after polling\n"); | |
1368 | ibmphp_unload(); | |
1369 | debug("done\n"); | |
1370 | } | |
1371 | ||
1372 | module_init(ibmphp_init); | |
64f039d3 | 1373 | module_exit(ibmphp_exit); |