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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 */ |
8643e28d | 39 | #include <asm/io_apic.h> |
1da177e4 LT |
40 | #include "ibmphp.h" |
41 | ||
42 | #define attn_on(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNON) | |
43 | #define attn_off(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNOFF) | |
44 | #define attn_LED_blink(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_BLINKLED) | |
45 | #define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot (sl, READ_REVLEVEL, rev) | |
46 | #define get_hpc_options(sl, opt) ibmphp_hpc_readslot (sl, READ_HPCOPTIONS, opt) | |
47 | ||
48 | #define DRIVER_VERSION "0.6" | |
49 | #define DRIVER_DESC "IBM Hot Plug PCI Controller Driver" | |
50 | ||
51 | int ibmphp_debug; | |
52 | ||
90ab5ee9 | 53 | static bool debug; |
1da177e4 LT |
54 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
55 | MODULE_PARM_DESC (debug, "Debugging mode enabled or not"); | |
56 | MODULE_LICENSE ("GPL"); | |
57 | MODULE_DESCRIPTION (DRIVER_DESC); | |
58 | ||
59 | struct pci_bus *ibmphp_pci_bus; | |
60 | static int max_slots; | |
61 | ||
f7625980 | 62 | static int irqs[16]; /* PIC mode IRQs we're using so far (in case MPS |
1da177e4 LT |
63 | * tables don't provide default info for empty slots */ |
64 | ||
65 | static int init_flag; | |
66 | ||
67 | /* | |
68 | static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8); | |
69 | ||
70 | static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value) | |
71 | { | |
72 | return get_max_adapter_speed_1 (hs, value, 1); | |
73 | } | |
74 | */ | |
f7625980 | 75 | static inline int get_cur_bus_info(struct slot **sl) |
1da177e4 LT |
76 | { |
77 | int rc = 1; | |
3c78bc61 | 78 | struct slot *slot_cur = *sl; |
1da177e4 LT |
79 | |
80 | debug("options = %x\n", slot_cur->ctrl->options); | |
f7625980 | 81 | debug("revision = %x\n", slot_cur->ctrl->revision); |
1da177e4 | 82 | |
f7625980 | 83 | if (READ_BUS_STATUS(slot_cur->ctrl)) |
1da177e4 | 84 | rc = ibmphp_hpc_readslot(slot_cur, READ_BUSSTATUS, NULL); |
f7625980 BH |
85 | |
86 | if (rc) | |
1da177e4 | 87 | return rc; |
f7625980 | 88 | |
1da177e4 LT |
89 | slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED(slot_cur->busstatus); |
90 | if (READ_BUS_MODE(slot_cur->ctrl)) | |
91 | slot_cur->bus_on->current_bus_mode = | |
92 | CURRENT_BUS_MODE(slot_cur->busstatus); | |
93 | else | |
94 | slot_cur->bus_on->current_bus_mode = 0xFF; | |
95 | ||
96 | debug("busstatus = %x, bus_speed = %x, bus_mode = %x\n", | |
97 | slot_cur->busstatus, | |
98 | slot_cur->bus_on->current_speed, | |
99 | slot_cur->bus_on->current_bus_mode); | |
f7625980 | 100 | |
1da177e4 LT |
101 | *sl = slot_cur; |
102 | return 0; | |
103 | } | |
104 | ||
105 | static inline int slot_update(struct slot **sl) | |
106 | { | |
107 | int rc; | |
f7625980 BH |
108 | rc = ibmphp_hpc_readslot(*sl, READ_ALLSTAT, NULL); |
109 | if (rc) | |
1da177e4 LT |
110 | return rc; |
111 | if (!init_flag) | |
112 | rc = get_cur_bus_info(sl); | |
113 | return rc; | |
114 | } | |
115 | ||
116 | static int __init get_max_slots (void) | |
117 | { | |
3c78bc61 RD |
118 | struct slot *slot_cur; |
119 | struct list_head *tmp; | |
1da177e4 LT |
120 | u8 slot_count = 0; |
121 | ||
122 | list_for_each(tmp, &ibmphp_slot_head) { | |
123 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
124 | /* sometimes the hot-pluggable slots start with 4 (not always from 1) */ | |
125 | slot_count = max(slot_count, slot_cur->number); | |
126 | } | |
127 | return slot_count; | |
128 | } | |
129 | ||
130 | /* This routine will put the correct slot->device information per slot. It's | |
131 | * called from initialization of the slot structures. It will also assign | |
132 | * interrupt numbers per each slot. | |
133 | * Parameters: struct slot | |
134 | * Returns 0 or errors | |
135 | */ | |
136 | int ibmphp_init_devno(struct slot **cur_slot) | |
137 | { | |
138 | struct irq_routing_table *rtable; | |
139 | int len; | |
140 | int loop; | |
141 | int i; | |
142 | ||
143 | rtable = pcibios_get_irq_routing_table(); | |
144 | if (!rtable) { | |
145 | err("no BIOS routing table...\n"); | |
146 | return -ENOMEM; | |
147 | } | |
148 | ||
149 | len = (rtable->size - sizeof(struct irq_routing_table)) / | |
150 | sizeof(struct irq_info); | |
151 | ||
029c3c13 JJ |
152 | if (!len) { |
153 | kfree(rtable); | |
1da177e4 | 154 | return -1; |
029c3c13 | 155 | } |
1da177e4 | 156 | for (loop = 0; loop < len; loop++) { |
e20c06fd YL |
157 | if ((*cur_slot)->number == rtable->slots[loop].slot && |
158 | (*cur_slot)->bus == rtable->slots[loop].bus) { | |
1da177e4 LT |
159 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); |
160 | for (i = 0; i < 4; i++) | |
161 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
25d0d35e | 162 | (int) (*cur_slot)->device, i); |
e20c06fd YL |
163 | |
164 | debug("(*cur_slot)->irq[0] = %x\n", | |
165 | (*cur_slot)->irq[0]); | |
166 | debug("(*cur_slot)->irq[1] = %x\n", | |
167 | (*cur_slot)->irq[1]); | |
168 | debug("(*cur_slot)->irq[2] = %x\n", | |
169 | (*cur_slot)->irq[2]); | |
170 | debug("(*cur_slot)->irq[3] = %x\n", | |
171 | (*cur_slot)->irq[3]); | |
172 | ||
f7625980 | 173 | debug("rtable->exclusive_irqs = %x\n", |
1da177e4 | 174 | rtable->exclusive_irqs); |
e20c06fd | 175 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", |
1da177e4 | 176 | rtable->slots[loop].irq[0].bitmap); |
e20c06fd | 177 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", |
1da177e4 | 178 | rtable->slots[loop].irq[1].bitmap); |
e20c06fd | 179 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", |
1da177e4 | 180 | rtable->slots[loop].irq[2].bitmap); |
e20c06fd | 181 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", |
1da177e4 LT |
182 | rtable->slots[loop].irq[3].bitmap); |
183 | ||
e20c06fd | 184 | debug("rtable->slots[loop].irq[0].link = %x\n", |
1da177e4 | 185 | rtable->slots[loop].irq[0].link); |
e20c06fd | 186 | debug("rtable->slots[loop].irq[1].link = %x\n", |
1da177e4 | 187 | rtable->slots[loop].irq[1].link); |
e20c06fd | 188 | debug("rtable->slots[loop].irq[2].link = %x\n", |
1da177e4 | 189 | rtable->slots[loop].irq[2].link); |
e20c06fd | 190 | debug("rtable->slots[loop].irq[3].link = %x\n", |
1da177e4 | 191 | rtable->slots[loop].irq[3].link); |
e20c06fd YL |
192 | debug("end of init_devno\n"); |
193 | kfree(rtable); | |
194 | return 0; | |
1da177e4 LT |
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 | } | |
f7625980 | 272 | } else |
1da177e4 LT |
273 | rc = -ENODEV; |
274 | ||
275 | ibmphp_unlock_operations(); | |
276 | ||
277 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
278 | return rc; | |
279 | } | |
280 | ||
3c78bc61 | 281 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
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); | |
f7625980 | 289 | |
1da177e4 | 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 | ||
3c78bc61 | 312 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
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 | ||
3c78bc61 | 339 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
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 | ||
3c78bc61 | 365 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
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 | ||
3749c51a | 396 | static int get_max_bus_speed(struct slot *slot) |
1da177e4 | 397 | { |
3749c51a | 398 | int rc; |
1da177e4 | 399 | u8 mode = 0; |
3749c51a MW |
400 | enum pci_bus_speed speed; |
401 | struct pci_bus *bus = slot->hotplug_slot->pci_slot->bus; | |
1da177e4 | 402 | |
3749c51a | 403 | debug("%s - Entry slot[%p]\n", __func__, slot); |
1da177e4 LT |
404 | |
405 | ibmphp_lock_operations(); | |
3749c51a | 406 | mode = slot->supported_bus_mode; |
f7625980 | 407 | speed = slot->supported_speed; |
1da177e4 | 408 | ibmphp_unlock_operations(); |
1da177e4 | 409 | |
3749c51a MW |
410 | switch (speed) { |
411 | case BUS_SPEED_33: | |
412 | break; | |
413 | case BUS_SPEED_66: | |
f7625980 | 414 | if (mode == BUS_MODE_PCIX) |
3749c51a MW |
415 | speed += 0x01; |
416 | break; | |
417 | case BUS_SPEED_100: | |
418 | case BUS_SPEED_133: | |
419 | speed += 0x01; | |
420 | break; | |
421 | default: | |
422 | /* Note (will need to change): there would be soon 256, 512 also */ | |
423 | rc = -ENODEV; | |
1da177e4 LT |
424 | } |
425 | ||
3749c51a MW |
426 | if (!rc) |
427 | bus->max_bus_speed = speed; | |
428 | ||
429 | debug("%s - Exit rc[%d] speed[%x]\n", __func__, rc, speed); | |
1da177e4 LT |
430 | return rc; |
431 | } | |
432 | ||
433 | /* | |
3c78bc61 | 434 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 *value, u8 flag) |
1da177e4 LT |
435 | { |
436 | int rc = -ENODEV; | |
437 | struct slot *pslot; | |
438 | struct slot myslot; | |
439 | ||
440 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
441 | (ulong)hotplug_slot, (ulong) value); | |
442 | ||
443 | if (flag) | |
444 | ibmphp_lock_operations(); | |
445 | ||
446 | if (hotplug_slot && value) { | |
447 | pslot = hotplug_slot->private; | |
448 | if (pslot) { | |
449 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
450 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
451 | &(myslot.status)); | |
452 | ||
453 | if (!(SLOT_LATCH (myslot.status)) && | |
454 | (SLOT_PRESENT (myslot.status))) { | |
455 | rc = ibmphp_hpc_readslot(pslot, | |
456 | READ_EXTSLOTSTATUS, | |
457 | &(myslot.ext_status)); | |
458 | if (!rc) | |
459 | *value = SLOT_SPEED(myslot.ext_status); | |
460 | } else | |
461 | *value = MAX_ADAPTER_NONE; | |
462 | } | |
463 | } | |
464 | ||
465 | if (flag) | |
466 | ibmphp_unlock_operations(); | |
467 | ||
468 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
469 | return rc; | |
470 | } | |
471 | ||
3c78bc61 | 472 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char *value) |
1da177e4 LT |
473 | { |
474 | int rc = -ENODEV; | |
475 | struct slot *pslot = NULL; | |
476 | ||
477 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
478 | ||
479 | ibmphp_lock_operations(); | |
480 | ||
481 | if (hotplug_slot) { | |
482 | pslot = hotplug_slot->private; | |
483 | if (pslot) { | |
484 | rc = 0; | |
485 | snprintf(value, 100, "Bus %x", pslot->bus); | |
486 | } | |
487 | } else | |
488 | rc = -ENODEV; | |
489 | ||
490 | ibmphp_unlock_operations(); | |
491 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
492 | return rc; | |
493 | } | |
494 | */ | |
495 | ||
496 | /**************************************************************************** | |
497 | * This routine will initialize the ops data structure used in the validate | |
498 | * function. It will also power off empty slots that are powered on since BIOS | |
499 | * leaves those on, albeit disconnected | |
500 | ****************************************************************************/ | |
501 | static int __init init_ops(void) | |
502 | { | |
503 | struct slot *slot_cur; | |
504 | struct list_head *tmp; | |
505 | int retval; | |
506 | int rc; | |
507 | ||
508 | list_for_each(tmp, &ibmphp_slot_head) { | |
509 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
510 | ||
511 | if (!slot_cur) | |
512 | return -ENODEV; | |
513 | ||
514 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", | |
515 | slot_cur->number); | |
f7625980 | 516 | if (slot_cur->ctrl->revision == 0xFF) |
1da177e4 LT |
517 | if (get_ctrl_revision(slot_cur, |
518 | &slot_cur->ctrl->revision)) | |
519 | return -1; | |
520 | ||
f7625980 BH |
521 | if (slot_cur->bus_on->current_speed == 0xFF) |
522 | if (get_cur_bus_info(&slot_cur)) | |
1da177e4 | 523 | return -1; |
3749c51a | 524 | get_max_bus_speed(slot_cur); |
1da177e4 LT |
525 | |
526 | if (slot_cur->ctrl->options == 0xFF) | |
527 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
528 | return -1; | |
529 | ||
530 | retval = slot_update(&slot_cur); | |
531 | if (retval) | |
532 | return retval; | |
533 | ||
534 | debug("status = %x\n", slot_cur->status); | |
535 | debug("ext_status = %x\n", slot_cur->ext_status); | |
536 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
537 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
538 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
539 | ||
f7625980 BH |
540 | if ((SLOT_PWRGD(slot_cur->status)) && |
541 | !(SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
542 | !(SLOT_LATCH(slot_cur->status))) { |
543 | debug("BEFORE POWER OFF COMMAND\n"); | |
544 | rc = power_off(slot_cur); | |
545 | if (rc) | |
546 | return rc; | |
547 | ||
548 | /* retval = slot_update(&slot_cur); | |
549 | * if (retval) | |
550 | * return retval; | |
551 | * ibmphp_update_slot_info(slot_cur); | |
552 | */ | |
553 | } | |
554 | } | |
555 | init_flag = 0; | |
556 | return 0; | |
557 | } | |
558 | ||
559 | /* This operation will check whether the slot is within the bounds and | |
560 | * the operation is valid to perform on that slot | |
561 | * Parameters: slot, operation | |
562 | * Returns: 0 or error codes | |
563 | */ | |
564 | static int validate(struct slot *slot_cur, int opn) | |
565 | { | |
566 | int number; | |
567 | int retval; | |
568 | ||
569 | if (!slot_cur) | |
570 | return -ENODEV; | |
571 | number = slot_cur->number; | |
572 | if ((number > max_slots) || (number < 0)) | |
573 | return -EBADSLT; | |
574 | debug("slot_number in validate is %d\n", slot_cur->number); | |
575 | ||
576 | retval = slot_update(&slot_cur); | |
577 | if (retval) | |
578 | return retval; | |
579 | ||
580 | switch (opn) { | |
581 | case ENABLE: | |
f7625980 BH |
582 | if (!(SLOT_PWRGD(slot_cur->status)) && |
583 | (SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
584 | !(SLOT_LATCH(slot_cur->status))) |
585 | return 0; | |
586 | break; | |
587 | case DISABLE: | |
f7625980 | 588 | if ((SLOT_PWRGD(slot_cur->status)) && |
1da177e4 LT |
589 | (SLOT_PRESENT(slot_cur->status)) && |
590 | !(SLOT_LATCH(slot_cur->status))) | |
591 | return 0; | |
592 | break; | |
593 | default: | |
594 | break; | |
595 | } | |
596 | err("validate failed....\n"); | |
597 | return -EINVAL; | |
598 | } | |
599 | ||
600 | /**************************************************************************** | |
601 | * This routine is for updating the data structures in the hotplug core | |
602 | * Parameters: struct slot | |
603 | * Returns: 0 or error | |
604 | ****************************************************************************/ | |
605 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
606 | { | |
607 | struct hotplug_slot_info *info; | |
3749c51a | 608 | struct pci_bus *bus = slot_cur->hotplug_slot->pci_slot->bus; |
1da177e4 LT |
609 | int rc; |
610 | u8 bus_speed; | |
611 | u8 mode; | |
612 | ||
613 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
614 | if (!info) { | |
615 | err("out of system memory\n"); | |
616 | return -ENOMEM; | |
617 | } | |
f7625980 | 618 | |
1da177e4 LT |
619 | info->power_status = SLOT_PWRGD(slot_cur->status); |
620 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
621 | slot_cur->ext_status); | |
622 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
623 | if (!SLOT_PRESENT(slot_cur->status)) { | |
624 | info->adapter_status = 0; | |
625 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ | |
626 | } else { | |
627 | info->adapter_status = 1; | |
628 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, | |
629 | &info->max_adapter_speed_status, 0); */ | |
630 | } | |
631 | ||
632 | bus_speed = slot_cur->bus_on->current_speed; | |
633 | mode = slot_cur->bus_on->current_bus_mode; | |
634 | ||
635 | switch (bus_speed) { | |
636 | case BUS_SPEED_33: | |
637 | break; | |
638 | case BUS_SPEED_66: | |
f7625980 | 639 | if (mode == BUS_MODE_PCIX) |
1da177e4 LT |
640 | bus_speed += 0x01; |
641 | else if (mode == BUS_MODE_PCI) | |
642 | ; | |
643 | else | |
644 | bus_speed = PCI_SPEED_UNKNOWN; | |
645 | break; | |
646 | case BUS_SPEED_100: | |
647 | case BUS_SPEED_133: | |
648 | bus_speed += 0x01; | |
649 | break; | |
650 | default: | |
651 | bus_speed = PCI_SPEED_UNKNOWN; | |
652 | } | |
653 | ||
3749c51a | 654 | bus->cur_bus_speed = bus_speed; |
f7625980 BH |
655 | // To do: bus_names |
656 | ||
1da177e4 LT |
657 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); |
658 | kfree(info); | |
659 | return rc; | |
660 | } | |
661 | ||
662 | ||
663 | /****************************************************************************** | |
664 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
665 | * is called from visit routines | |
666 | ******************************************************************************/ | |
667 | ||
668 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
669 | { | |
670 | struct pci_func *func_cur; | |
671 | struct slot *slot_cur; | |
3c78bc61 | 672 | struct list_head *tmp; |
1da177e4 LT |
673 | list_for_each(tmp, &ibmphp_slot_head) { |
674 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
675 | if (slot_cur->func) { | |
676 | func_cur = slot_cur->func; | |
677 | while (func_cur) { | |
678 | if ((func_cur->busno == busno) && | |
679 | (func_cur->device == device) && | |
680 | (func_cur->function == function)) | |
681 | return func_cur; | |
682 | func_cur = func_cur->next; | |
683 | } | |
684 | } | |
685 | } | |
686 | return NULL; | |
687 | } | |
688 | ||
689 | /************************************************************* | |
690 | * This routine frees up memory used by struct slot, including | |
691 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
692 | * and deregistering from the hotplug core | |
693 | *************************************************************/ | |
694 | static void free_slots(void) | |
695 | { | |
696 | struct slot *slot_cur; | |
3c78bc61 RD |
697 | struct list_head *tmp; |
698 | struct list_head *next; | |
1da177e4 | 699 | |
66bef8c0 | 700 | debug("%s -- enter\n", __func__); |
1da177e4 LT |
701 | |
702 | list_for_each_safe(tmp, next, &ibmphp_slot_head) { | |
703 | slot_cur = list_entry(tmp, struct slot, ibm_slot_list); | |
704 | pci_hp_deregister(slot_cur->hotplug_slot); | |
705 | } | |
66bef8c0 | 706 | debug("%s -- exit\n", __func__); |
1da177e4 LT |
707 | } |
708 | ||
709 | static void ibm_unconfigure_device(struct pci_func *func) | |
710 | { | |
711 | struct pci_dev *temp; | |
712 | u8 j; | |
713 | ||
66bef8c0 | 714 | debug("inside %s\n", __func__); |
1da177e4 LT |
715 | debug("func->device = %x, func->function = %x\n", |
716 | func->device, func->function); | |
717 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
718 | ||
c4ec84c7 RW |
719 | pci_lock_rescan_remove(); |
720 | ||
1da177e4 | 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) { | |
210647af | 724 | pci_stop_and_remove_bus_device(temp); |
f362b8bf JP |
725 | pci_dev_put(temp); |
726 | } | |
1da177e4 | 727 | } |
c4ec84c7 | 728 | |
f362b8bf | 729 | pci_dev_put(func->dev); |
c4ec84c7 RW |
730 | |
731 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
732 | } |
733 | ||
734 | /* | |
f7625980 BH |
735 | * The following function is to fix kernel bug regarding |
736 | * getting bus entries, here we manually add those primary | |
1da177e4 LT |
737 | * bus entries to kernel bus structure whenever apply |
738 | */ | |
739 | static u8 bus_structure_fixup(u8 busno) | |
740 | { | |
c90570d9 | 741 | struct pci_bus *bus, *b; |
1da177e4 LT |
742 | struct pci_dev *dev; |
743 | u16 l; | |
744 | ||
745 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
746 | return 1; | |
747 | ||
748 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
749 | if (!bus) { | |
66bef8c0 | 750 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
751 | return 1; |
752 | } | |
753 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
754 | if (!dev) { | |
755 | kfree(bus); | |
66bef8c0 | 756 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
757 | return 1; |
758 | } | |
759 | ||
760 | bus->number = busno; | |
761 | bus->ops = ibmphp_pci_bus->ops; | |
762 | dev->bus = bus; | |
763 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
764 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
765 | (l != 0x0000) && (l != 0xffff)) { | |
367fa982 | 766 | debug("%s - Inside bus_structure_fixup()\n", |
66bef8c0 | 767 | __func__); |
c90570d9 YW |
768 | b = pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); |
769 | if (!b) | |
770 | continue; | |
771 | ||
772 | pci_bus_add_devices(b); | |
1da177e4 LT |
773 | break; |
774 | } | |
775 | } | |
776 | ||
777 | kfree(dev); | |
778 | kfree(bus); | |
779 | ||
780 | return 0; | |
781 | } | |
782 | ||
783 | static int ibm_configure_device(struct pci_func *func) | |
784 | { | |
1da177e4 LT |
785 | struct pci_bus *child; |
786 | int num; | |
787 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
788 | for bridged devices primarily */ | |
789 | ||
c4ec84c7 RW |
790 | pci_lock_rescan_remove(); |
791 | ||
1da177e4 LT |
792 | if (!(bus_structure_fixup(func->busno))) |
793 | flag = 1; | |
794 | if (func->dev == NULL) | |
f362b8bf | 795 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
796 | PCI_DEVFN(func->device, func->function)); |
797 | ||
798 | if (func->dev == NULL) { | |
799 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
800 | if (!bus) | |
c4ec84c7 | 801 | goto out; |
1da177e4 LT |
802 | |
803 | num = pci_scan_slot(bus, | |
804 | PCI_DEVFN(func->device, func->function)); | |
805 | if (num) | |
806 | pci_bus_add_devices(bus); | |
807 | ||
f362b8bf | 808 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
809 | PCI_DEVFN(func->device, func->function)); |
810 | if (func->dev == NULL) { | |
811 | err("ERROR... : pci_dev still NULL\n"); | |
c4ec84c7 | 812 | goto out; |
1da177e4 LT |
813 | } |
814 | } | |
815 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
2d7abf32 YL |
816 | pci_hp_add_bridge(func->dev); |
817 | child = func->dev->subordinate; | |
818 | if (child) | |
819 | pci_bus_add_devices(child); | |
1da177e4 LT |
820 | } |
821 | ||
c4ec84c7 RW |
822 | out: |
823 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
824 | return 0; |
825 | } | |
826 | ||
827 | /******************************************************* | |
f7625980 | 828 | * Returns whether the bus is empty or not |
1da177e4 | 829 | *******************************************************/ |
3c78bc61 | 830 | static int is_bus_empty(struct slot *slot_cur) |
1da177e4 LT |
831 | { |
832 | int rc; | |
3c78bc61 | 833 | struct slot *tmp_slot; |
1da177e4 LT |
834 | u8 i = slot_cur->bus_on->slot_min; |
835 | ||
836 | while (i <= slot_cur->bus_on->slot_max) { | |
837 | if (i == slot_cur->number) { | |
838 | i++; | |
839 | continue; | |
840 | } | |
841 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
842 | if (!tmp_slot) | |
843 | return 0; | |
844 | rc = slot_update(&tmp_slot); | |
845 | if (rc) | |
846 | return 0; | |
847 | if (SLOT_PRESENT(tmp_slot->status) && | |
848 | SLOT_PWRGD(tmp_slot->status)) | |
849 | return 0; | |
850 | i++; | |
851 | } | |
852 | return 1; | |
853 | } | |
854 | ||
855 | /*********************************************************** | |
f7625980 | 856 | * If the HPC permits and the bus currently empty, tries to set the |
1da177e4 LT |
857 | * bus speed and mode at the maximum card and bus capability |
858 | * Parameters: slot | |
859 | * Returns: bus is set (0) or error code | |
860 | ***********************************************************/ | |
3c78bc61 | 861 | static int set_bus(struct slot *slot_cur) |
1da177e4 LT |
862 | { |
863 | int rc; | |
864 | u8 speed; | |
865 | u8 cmd = 0x0; | |
866 | int retval; | |
867 | static struct pci_device_id ciobx[] = { | |
868 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, | |
869 | { }, | |
f7625980 | 870 | }; |
1da177e4 | 871 | |
66bef8c0 | 872 | debug("%s - entry slot # %d\n", __func__, slot_cur->number); |
1da177e4 LT |
873 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { |
874 | rc = slot_update(&slot_cur); | |
875 | if (rc) | |
876 | return rc; | |
877 | speed = SLOT_SPEED(slot_cur->ext_status); | |
878 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
879 | switch (speed) { | |
880 | case HPC_SLOT_SPEED_33: | |
881 | cmd = HPC_BUS_33CONVMODE; | |
882 | break; | |
883 | case HPC_SLOT_SPEED_66: | |
884 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
885 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
886 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
887 | cmd = HPC_BUS_66PCIXMODE; | |
888 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
889 | /* if max slot/bus capability is 66 pci | |
890 | and there's no bus mode mismatch, then | |
f7625980 | 891 | the adapter supports 66 pci */ |
1da177e4 LT |
892 | cmd = HPC_BUS_66CONVMODE; |
893 | else | |
894 | cmd = HPC_BUS_33CONVMODE; | |
895 | } else { | |
896 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
897 | cmd = HPC_BUS_66CONVMODE; | |
898 | else | |
899 | cmd = HPC_BUS_33CONVMODE; | |
900 | } | |
901 | break; | |
902 | case HPC_SLOT_SPEED_133: | |
903 | switch (slot_cur->supported_speed) { | |
904 | case BUS_SPEED_33: | |
905 | cmd = HPC_BUS_33CONVMODE; | |
906 | break; | |
907 | case BUS_SPEED_66: | |
908 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
909 | cmd = HPC_BUS_66PCIXMODE; | |
910 | else | |
911 | cmd = HPC_BUS_66CONVMODE; | |
912 | break; | |
913 | case BUS_SPEED_100: | |
914 | cmd = HPC_BUS_100PCIXMODE; | |
915 | break; | |
916 | case BUS_SPEED_133: | |
917 | /* This is to take care of the bug in CIOBX chip */ | |
918 | if (pci_dev_present(ciobx)) | |
919 | ibmphp_hpc_writeslot(slot_cur, | |
920 | HPC_BUS_100PCIXMODE); | |
921 | cmd = HPC_BUS_133PCIXMODE; | |
922 | break; | |
923 | default: | |
924 | err("Wrong bus speed\n"); | |
925 | return -ENODEV; | |
926 | } | |
927 | break; | |
928 | default: | |
929 | err("wrong slot speed\n"); | |
930 | return -ENODEV; | |
931 | } | |
932 | debug("setting bus speed for slot %d, cmd %x\n", | |
933 | slot_cur->number, cmd); | |
934 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
935 | if (retval) { | |
936 | err("setting bus speed failed\n"); | |
937 | return retval; | |
938 | } | |
939 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
940 | err("command not completed successfully in set_bus\n"); | |
941 | return -EIO; | |
942 | } | |
943 | } | |
f7625980 | 944 | /* This is for x440, once Brandon fixes the firmware, |
1da177e4 LT |
945 | will not need this delay */ |
946 | msleep(1000); | |
66bef8c0 | 947 | debug("%s -Exit\n", __func__); |
1da177e4 LT |
948 | return 0; |
949 | } | |
950 | ||
951 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
f7625980 | 952 | * This is used in deciding whether or not to power up the slot. |
1da177e4 | 953 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on |
f7625980 | 954 | * same bus) |
1da177e4 LT |
955 | * Parameters: slot |
956 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
957 | */ | |
958 | static int check_limitations(struct slot *slot_cur) | |
959 | { | |
960 | u8 i; | |
3c78bc61 | 961 | struct slot *tmp_slot; |
1da177e4 LT |
962 | u8 count = 0; |
963 | u8 limitation = 0; | |
964 | ||
965 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
966 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
967 | if (!tmp_slot) | |
968 | return -ENODEV; | |
969 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
970 | !(SLOT_CONNECT(tmp_slot->status))) | |
971 | count++; | |
972 | } | |
973 | get_cur_bus_info(&slot_cur); | |
974 | switch (slot_cur->bus_on->current_speed) { | |
975 | case BUS_SPEED_33: | |
976 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
977 | break; | |
978 | case BUS_SPEED_66: | |
979 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
980 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
981 | else | |
982 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
983 | break; | |
984 | case BUS_SPEED_100: | |
985 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
986 | break; | |
987 | case BUS_SPEED_133: | |
988 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
989 | break; | |
990 | } | |
991 | ||
992 | if ((count + 1) > limitation) | |
993 | return -EINVAL; | |
994 | return 0; | |
995 | } | |
996 | ||
997 | static inline void print_card_capability(struct slot *slot_cur) | |
998 | { | |
999 | info("capability of the card is "); | |
f7625980 | 1000 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) |
1da177e4 LT |
1001 | info(" 133 MHz PCI-X\n"); |
1002 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
1003 | info(" 66 MHz PCI-X\n"); | |
1004 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
1005 | info(" 66 MHz PCI\n"); | |
1006 | else | |
1007 | info(" 33 MHz PCI\n"); | |
1008 | ||
1009 | } | |
1010 | ||
1011 | /* This routine will power on the slot, configure the device(s) and find the | |
1012 | * drivers for them. | |
1013 | * Parameters: hotplug_slot | |
1014 | * Returns: 0 or failure codes | |
1015 | */ | |
1016 | static int enable_slot(struct hotplug_slot *hs) | |
1017 | { | |
1018 | int rc, i, rcpr; | |
1019 | struct slot *slot_cur; | |
1020 | u8 function; | |
1021 | struct pci_func *tmp_func; | |
1022 | ||
1023 | ibmphp_lock_operations(); | |
1024 | ||
1025 | debug("ENABLING SLOT........\n"); | |
1026 | slot_cur = hs->private; | |
1027 | ||
79e50e72 QL |
1028 | rc = validate(slot_cur, ENABLE); |
1029 | if (rc) { | |
1da177e4 LT |
1030 | err("validate function failed\n"); |
1031 | goto error_nopower; | |
1032 | } | |
1033 | ||
1034 | attn_LED_blink(slot_cur); | |
f7625980 | 1035 | |
1da177e4 LT |
1036 | rc = set_bus(slot_cur); |
1037 | if (rc) { | |
1038 | err("was not able to set the bus\n"); | |
1039 | goto error_nopower; | |
1040 | } | |
1041 | ||
1042 | /*-----------------debugging------------------------------*/ | |
1043 | get_cur_bus_info(&slot_cur); | |
1044 | debug("the current bus speed right after set_bus = %x\n", | |
1045 | slot_cur->bus_on->current_speed); | |
1046 | /*----------------------------------------------------------*/ | |
1047 | ||
1048 | rc = check_limitations(slot_cur); | |
1049 | if (rc) { | |
1050 | err("Adding this card exceeds the limitations of this bus.\n"); | |
227f0647 | 1051 | err("(i.e., >1 133MHz cards running on same bus, or >2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1052 | err("Try hot-adding into another bus\n"); |
1053 | rc = -EINVAL; | |
1054 | goto error_nopower; | |
1055 | } | |
1056 | ||
1057 | rc = power_on(slot_cur); | |
1058 | ||
1059 | if (rc) { | |
1060 | err("something wrong when powering up... please see below for details\n"); | |
1061 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1062 | attn_off(slot_cur); | |
1063 | attn_on(slot_cur); | |
1064 | if (slot_update(&slot_cur)) { | |
1065 | attn_off(slot_cur); | |
1066 | attn_on(slot_cur); | |
1067 | rc = -ENODEV; | |
1068 | goto exit; | |
1069 | } | |
1070 | /* Check to see the error of why it failed */ | |
1071 | if ((SLOT_POWER(slot_cur->status)) && | |
1072 | !(SLOT_PWRGD(slot_cur->status))) | |
1073 | err("power fault occurred trying to power up\n"); | |
1074 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
227f0647 | 1075 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1076 | print_card_capability(slot_cur); |
1077 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
227f0647 | 1078 | err("bus mode mismatch occurred. please check current bus mode and card capability\n"); |
1da177e4 LT |
1079 | print_card_capability(slot_cur); |
1080 | } | |
1081 | ibmphp_update_slot_info(slot_cur); | |
1082 | goto exit; | |
1083 | } | |
1084 | debug("after power_on\n"); | |
1085 | /*-----------------------debugging---------------------------*/ | |
1086 | get_cur_bus_info(&slot_cur); | |
1087 | debug("the current bus speed right after power_on = %x\n", | |
1088 | slot_cur->bus_on->current_speed); | |
1089 | /*----------------------------------------------------------*/ | |
1090 | ||
1091 | rc = slot_update(&slot_cur); | |
1092 | if (rc) | |
1093 | goto error_power; | |
f7625980 | 1094 | |
1da177e4 LT |
1095 | rc = -EINVAL; |
1096 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1097 | err("power fault occurred trying to power up...\n"); | |
1098 | goto error_power; | |
1099 | } | |
1100 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
227f0647 | 1101 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1102 | print_card_capability(slot_cur); |
1103 | goto error_power; | |
f7625980 | 1104 | } |
1da177e4 LT |
1105 | /* Don't think this case will happen after above checks... |
1106 | * but just in case, for paranoia sake */ | |
1107 | if (!(SLOT_POWER(slot_cur->status))) { | |
1108 | err("power on failed...\n"); | |
1109 | goto error_power; | |
1110 | } | |
1111 | ||
f5afe806 | 1112 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1113 | if (!slot_cur->func) { |
1114 | /* We cannot do update_slot_info here, since no memory for | |
1115 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1116 | err("out of system memory\n"); | |
1117 | rc = -ENOMEM; | |
1118 | goto error_power; | |
1119 | } | |
1da177e4 LT |
1120 | slot_cur->func->busno = slot_cur->bus; |
1121 | slot_cur->func->device = slot_cur->device; | |
1122 | for (i = 0; i < 4; i++) | |
1123 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1124 | ||
1125 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1126 | slot_cur->bus, slot_cur->device); | |
1127 | ||
1128 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1129 | err("configure_card was unsuccessful...\n"); | |
1130 | /* true because don't need to actually deallocate resources, | |
1131 | * just remove references */ | |
1132 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1133 | debug("after unconfigure_card\n"); | |
1134 | slot_cur->func = NULL; | |
1135 | rc = -ENOMEM; | |
1136 | goto error_power; | |
1137 | } | |
1138 | ||
1139 | function = 0x00; | |
1140 | do { | |
1141 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1142 | function++); | |
1143 | if (tmp_func && !(tmp_func->dev)) | |
1144 | ibm_configure_device(tmp_func); | |
1145 | } while (tmp_func); | |
1146 | ||
1147 | attn_off(slot_cur); | |
1148 | if (slot_update(&slot_cur)) { | |
1149 | rc = -EFAULT; | |
1150 | goto exit; | |
1151 | } | |
1152 | ibmphp_print_test(); | |
1153 | rc = ibmphp_update_slot_info(slot_cur); | |
1154 | exit: | |
f7625980 | 1155 | ibmphp_unlock_operations(); |
1da177e4 LT |
1156 | return rc; |
1157 | ||
1158 | error_nopower: | |
1159 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1160 | attn_on(slot_cur); | |
1161 | error_cont: | |
1162 | rcpr = slot_update(&slot_cur); | |
1163 | if (rcpr) { | |
1164 | rc = rcpr; | |
1165 | goto exit; | |
1166 | } | |
1167 | ibmphp_update_slot_info(slot_cur); | |
1168 | goto exit; | |
1169 | ||
1170 | error_power: | |
1171 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1172 | attn_on(slot_cur); | |
1173 | rcpr = power_off(slot_cur); | |
1174 | if (rcpr) { | |
1175 | rc = rcpr; | |
1176 | goto exit; | |
1177 | } | |
1178 | goto error_cont; | |
1179 | } | |
1180 | ||
1181 | /************************************************************** | |
1182 | * HOT REMOVING ADAPTER CARD * | |
1183 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1184 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
1185 | DISABLE POWER , * | |
1186 | **************************************************************/ | |
1187 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1188 | { | |
1189 | struct slot *slot = hotplug_slot->private; | |
1190 | int rc; | |
f7625980 | 1191 | |
1da177e4 LT |
1192 | ibmphp_lock_operations(); |
1193 | rc = ibmphp_do_disable_slot(slot); | |
1194 | ibmphp_unlock_operations(); | |
1195 | return rc; | |
1196 | } | |
1197 | ||
1198 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1199 | { | |
1200 | int rc; | |
1201 | u8 flag; | |
1202 | ||
f7625980 BH |
1203 | debug("DISABLING SLOT...\n"); |
1204 | ||
656f978f | 1205 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) |
1da177e4 | 1206 | return -ENODEV; |
f7625980 | 1207 | |
1da177e4 | 1208 | flag = slot_cur->flag; |
dc6712d1 | 1209 | slot_cur->flag = 1; |
1da177e4 | 1210 | |
dc6712d1 | 1211 | if (flag == 1) { |
1da177e4 LT |
1212 | rc = validate(slot_cur, DISABLE); |
1213 | /* checking if powered off already & valid slot # */ | |
1214 | if (rc) | |
1215 | goto error; | |
1216 | } | |
1217 | attn_LED_blink(slot_cur); | |
1218 | ||
1219 | if (slot_cur->func == NULL) { | |
f7625980 | 1220 | /* We need this for functions that were there on bootup */ |
f5afe806 | 1221 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1222 | if (!slot_cur->func) { |
1223 | err("out of system memory\n"); | |
1224 | rc = -ENOMEM; | |
1225 | goto error; | |
1226 | } | |
1da177e4 LT |
1227 | slot_cur->func->busno = slot_cur->bus; |
1228 | slot_cur->func->device = slot_cur->device; | |
1229 | } | |
1230 | ||
1231 | ibm_unconfigure_device(slot_cur->func); | |
f7625980 BH |
1232 | |
1233 | /* | |
1234 | * If we got here from latch suddenly opening on operating card or | |
1235 | * a power fault, there's no power to the card, so cannot | |
1236 | * read from it to determine what resources it occupied. This operation | |
1237 | * is forbidden anyhow. The best we can do is remove it from kernel | |
1238 | * lists at least */ | |
1da177e4 LT |
1239 | |
1240 | if (!flag) { | |
1241 | attn_off(slot_cur); | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1246 | slot_cur->func = NULL; | |
1247 | debug("in disable_slot. after unconfigure_card\n"); | |
1248 | if (rc) { | |
1249 | err("could not unconfigure card.\n"); | |
1250 | goto error; | |
1251 | } | |
1252 | ||
1253 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1254 | if (rc) | |
1255 | goto error; | |
1256 | ||
1257 | attn_off(slot_cur); | |
1258 | rc = slot_update(&slot_cur); | |
1259 | if (rc) | |
1260 | goto exit; | |
1261 | ||
1262 | rc = ibmphp_update_slot_info(slot_cur); | |
1263 | ibmphp_print_test(); | |
1264 | exit: | |
1265 | return rc; | |
1266 | ||
1267 | error: | |
1268 | /* Need to turn off if was blinking b4 */ | |
1269 | attn_off(slot_cur); | |
1270 | attn_on(slot_cur); | |
1271 | if (slot_update(&slot_cur)) { | |
1272 | rc = -EFAULT; | |
1273 | goto exit; | |
1274 | } | |
f7625980 | 1275 | if (flag) |
1da177e4 LT |
1276 | ibmphp_update_slot_info(slot_cur); |
1277 | goto exit; | |
1278 | } | |
1279 | ||
1280 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1da177e4 LT |
1281 | .set_attention_status = set_attention_status, |
1282 | .enable_slot = enable_slot, | |
1283 | .disable_slot = ibmphp_disable_slot, | |
1284 | .hardware_test = NULL, | |
1285 | .get_power_status = get_power_status, | |
1286 | .get_attention_status = get_attention_status, | |
1287 | .get_latch_status = get_latch_status, | |
1288 | .get_adapter_status = get_adapter_present, | |
1da177e4 LT |
1289 | /* .get_max_adapter_speed = get_max_adapter_speed, |
1290 | .get_bus_name_status = get_bus_name, | |
1291 | */ | |
1292 | }; | |
1293 | ||
1294 | static void ibmphp_unload(void) | |
1295 | { | |
1296 | free_slots(); | |
1297 | debug("after slots\n"); | |
1298 | ibmphp_free_resources(); | |
1299 | debug("after resources\n"); | |
1300 | ibmphp_free_bus_info_queue(); | |
1301 | debug("after bus info\n"); | |
1302 | ibmphp_free_ebda_hpc_queue(); | |
1303 | debug("after ebda hpc\n"); | |
1304 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1305 | debug("after ebda pci rsrc\n"); | |
1306 | kfree(ibmphp_pci_bus); | |
1307 | } | |
1308 | ||
1309 | static int __init ibmphp_init(void) | |
1310 | { | |
1311 | struct pci_bus *bus; | |
1312 | int i = 0; | |
1313 | int rc = 0; | |
1314 | ||
1315 | init_flag = 1; | |
1316 | ||
1317 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1318 | ||
1319 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1320 | if (!ibmphp_pci_bus) { | |
1321 | err("out of memory\n"); | |
1322 | rc = -ENOMEM; | |
1323 | goto exit; | |
1324 | } | |
1325 | ||
1326 | bus = pci_find_bus(0, 0); | |
1327 | if (!bus) { | |
1328 | err("Can't find the root pci bus, can not continue\n"); | |
1329 | rc = -ENODEV; | |
1330 | goto error; | |
1331 | } | |
1332 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1333 | ||
1334 | ibmphp_debug = debug; | |
1335 | ||
1336 | ibmphp_hpc_initvars(); | |
1337 | ||
1338 | for (i = 0; i < 16; i++) | |
1339 | irqs[i] = 0; | |
1340 | ||
79e50e72 QL |
1341 | rc = ibmphp_access_ebda(); |
1342 | if (rc) | |
1da177e4 LT |
1343 | goto error; |
1344 | debug("after ibmphp_access_ebda()\n"); | |
1345 | ||
79e50e72 QL |
1346 | rc = ibmphp_rsrc_init(); |
1347 | if (rc) | |
1da177e4 LT |
1348 | goto error; |
1349 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1350 | ||
1351 | max_slots = get_max_slots(); | |
f7625980 | 1352 | |
79e50e72 QL |
1353 | rc = ibmphp_register_pci(); |
1354 | if (rc) | |
1da177e4 LT |
1355 | goto error; |
1356 | ||
1357 | if (init_ops()) { | |
1358 | rc = -ENODEV; | |
1359 | goto error; | |
1360 | } | |
1361 | ||
1362 | ibmphp_print_test(); | |
79e50e72 QL |
1363 | rc = ibmphp_hpc_start_poll_thread(); |
1364 | if (rc) | |
1da177e4 | 1365 | goto error; |
1da177e4 | 1366 | |
1da177e4 LT |
1367 | exit: |
1368 | return rc; | |
1369 | ||
1370 | error: | |
1371 | ibmphp_unload(); | |
1372 | goto exit; | |
1373 | } | |
1374 | ||
1375 | static void __exit ibmphp_exit(void) | |
1376 | { | |
1377 | ibmphp_hpc_stop_poll_thread(); | |
1378 | debug("after polling\n"); | |
1379 | ibmphp_unload(); | |
1380 | debug("done\n"); | |
1381 | } | |
1382 | ||
1383 | module_init(ibmphp_init); | |
64f039d3 | 1384 | module_exit(ibmphp_exit); |