Commit | Line | Data |
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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 | ||
ff3ce480 BS |
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) | |
1da177e4 LT |
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 | 54 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
ff3ce480 BS |
55 | MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); |
56 | MODULE_LICENSE("GPL"); | |
57 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
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 | ||
ff3ce480 | 116 | static int __init get_max_slots(void) |
1da177e4 | 117 | { |
3c78bc61 | 118 | struct slot *slot_cur; |
1da177e4 LT |
119 | u8 slot_count = 0; |
120 | ||
2ac83ccc | 121 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
122 | /* sometimes the hot-pluggable slots start with 4 (not always from 1) */ |
123 | slot_count = max(slot_count, slot_cur->number); | |
124 | } | |
125 | return slot_count; | |
126 | } | |
127 | ||
128 | /* This routine will put the correct slot->device information per slot. It's | |
129 | * called from initialization of the slot structures. It will also assign | |
130 | * interrupt numbers per each slot. | |
131 | * Parameters: struct slot | |
132 | * Returns 0 or errors | |
133 | */ | |
134 | int ibmphp_init_devno(struct slot **cur_slot) | |
135 | { | |
136 | struct irq_routing_table *rtable; | |
137 | int len; | |
138 | int loop; | |
139 | int i; | |
140 | ||
141 | rtable = pcibios_get_irq_routing_table(); | |
142 | if (!rtable) { | |
143 | err("no BIOS routing table...\n"); | |
144 | return -ENOMEM; | |
145 | } | |
146 | ||
147 | len = (rtable->size - sizeof(struct irq_routing_table)) / | |
148 | sizeof(struct irq_info); | |
149 | ||
029c3c13 JJ |
150 | if (!len) { |
151 | kfree(rtable); | |
1da177e4 | 152 | return -1; |
029c3c13 | 153 | } |
1da177e4 | 154 | for (loop = 0; loop < len; loop++) { |
e20c06fd YL |
155 | if ((*cur_slot)->number == rtable->slots[loop].slot && |
156 | (*cur_slot)->bus == rtable->slots[loop].bus) { | |
1da177e4 LT |
157 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); |
158 | for (i = 0; i < 4; i++) | |
159 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
25d0d35e | 160 | (int) (*cur_slot)->device, i); |
e20c06fd YL |
161 | |
162 | debug("(*cur_slot)->irq[0] = %x\n", | |
163 | (*cur_slot)->irq[0]); | |
164 | debug("(*cur_slot)->irq[1] = %x\n", | |
165 | (*cur_slot)->irq[1]); | |
166 | debug("(*cur_slot)->irq[2] = %x\n", | |
167 | (*cur_slot)->irq[2]); | |
168 | debug("(*cur_slot)->irq[3] = %x\n", | |
169 | (*cur_slot)->irq[3]); | |
170 | ||
f7625980 | 171 | debug("rtable->exclusive_irqs = %x\n", |
1da177e4 | 172 | rtable->exclusive_irqs); |
e20c06fd | 173 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", |
1da177e4 | 174 | rtable->slots[loop].irq[0].bitmap); |
e20c06fd | 175 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", |
1da177e4 | 176 | rtable->slots[loop].irq[1].bitmap); |
e20c06fd | 177 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", |
1da177e4 | 178 | rtable->slots[loop].irq[2].bitmap); |
e20c06fd | 179 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", |
1da177e4 LT |
180 | rtable->slots[loop].irq[3].bitmap); |
181 | ||
e20c06fd | 182 | debug("rtable->slots[loop].irq[0].link = %x\n", |
1da177e4 | 183 | rtable->slots[loop].irq[0].link); |
e20c06fd | 184 | debug("rtable->slots[loop].irq[1].link = %x\n", |
1da177e4 | 185 | rtable->slots[loop].irq[1].link); |
e20c06fd | 186 | debug("rtable->slots[loop].irq[2].link = %x\n", |
1da177e4 | 187 | rtable->slots[loop].irq[2].link); |
e20c06fd | 188 | debug("rtable->slots[loop].irq[3].link = %x\n", |
1da177e4 | 189 | rtable->slots[loop].irq[3].link); |
e20c06fd YL |
190 | debug("end of init_devno\n"); |
191 | kfree(rtable); | |
192 | return 0; | |
1da177e4 LT |
193 | } |
194 | } | |
195 | ||
029c3c13 | 196 | kfree(rtable); |
1da177e4 LT |
197 | return -1; |
198 | } | |
199 | ||
200 | static inline int power_on(struct slot *slot_cur) | |
201 | { | |
202 | u8 cmd = HPC_SLOT_ON; | |
203 | int retval; | |
204 | ||
205 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
206 | if (retval) { | |
207 | err("power on failed\n"); | |
208 | return retval; | |
209 | } | |
210 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
211 | err("command not completed successfully in power_on\n"); | |
212 | return -EIO; | |
213 | } | |
214 | msleep(3000); /* For ServeRAID cards, and some 66 PCI */ | |
215 | return 0; | |
216 | } | |
217 | ||
218 | static inline int power_off(struct slot *slot_cur) | |
219 | { | |
220 | u8 cmd = HPC_SLOT_OFF; | |
221 | int retval; | |
222 | ||
223 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
224 | if (retval) { | |
225 | err("power off failed\n"); | |
226 | return retval; | |
227 | } | |
228 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
229 | err("command not completed successfully in power_off\n"); | |
230 | retval = -EIO; | |
231 | } | |
232 | return retval; | |
233 | } | |
234 | ||
235 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value) | |
236 | { | |
237 | int rc = 0; | |
238 | struct slot *pslot; | |
072888fa | 239 | u8 cmd = 0x00; /* avoid compiler warning */ |
1da177e4 LT |
240 | |
241 | debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", | |
242 | (ulong) hotplug_slot, value); | |
243 | ibmphp_lock_operations(); | |
072888fa | 244 | |
1da177e4 LT |
245 | |
246 | if (hotplug_slot) { | |
247 | switch (value) { | |
248 | case HPC_SLOT_ATTN_OFF: | |
249 | cmd = HPC_SLOT_ATTNOFF; | |
250 | break; | |
251 | case HPC_SLOT_ATTN_ON: | |
252 | cmd = HPC_SLOT_ATTNON; | |
253 | break; | |
254 | case HPC_SLOT_ATTN_BLINK: | |
255 | cmd = HPC_SLOT_BLINKLED; | |
256 | break; | |
257 | default: | |
258 | rc = -ENODEV; | |
259 | err("set_attention_status - Error : invalid input [%x]\n", | |
260 | value); | |
261 | break; | |
262 | } | |
263 | if (rc == 0) { | |
264 | pslot = hotplug_slot->private; | |
265 | if (pslot) | |
266 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
267 | else | |
268 | rc = -ENODEV; | |
269 | } | |
f7625980 | 270 | } else |
1da177e4 LT |
271 | rc = -ENODEV; |
272 | ||
273 | ibmphp_unlock_operations(); | |
274 | ||
275 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
276 | return rc; | |
277 | } | |
278 | ||
3c78bc61 | 279 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
280 | { |
281 | int rc = -ENODEV; | |
282 | struct slot *pslot; | |
283 | struct slot myslot; | |
284 | ||
285 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
286 | (ulong) hotplug_slot, (ulong) value); | |
f7625980 | 287 | |
1da177e4 | 288 | ibmphp_lock_operations(); |
9df7fde5 | 289 | if (hotplug_slot) { |
1da177e4 LT |
290 | pslot = hotplug_slot->private; |
291 | if (pslot) { | |
292 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
293 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
294 | &(myslot.status)); | |
295 | if (!rc) | |
296 | rc = ibmphp_hpc_readslot(pslot, | |
297 | READ_EXTSLOTSTATUS, | |
298 | &(myslot.ext_status)); | |
299 | if (!rc) | |
300 | *value = SLOT_ATTN(myslot.status, | |
301 | myslot.ext_status); | |
302 | } | |
303 | } | |
304 | ||
305 | ibmphp_unlock_operations(); | |
306 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
307 | return rc; | |
308 | } | |
309 | ||
3c78bc61 | 310 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
311 | { |
312 | int rc = -ENODEV; | |
313 | struct slot *pslot; | |
314 | struct slot myslot; | |
315 | ||
316 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
317 | (ulong) hotplug_slot, (ulong) value); | |
318 | ibmphp_lock_operations(); | |
9df7fde5 | 319 | if (hotplug_slot) { |
1da177e4 LT |
320 | pslot = hotplug_slot->private; |
321 | if (pslot) { | |
322 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
323 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
324 | &(myslot.status)); | |
325 | if (!rc) | |
326 | *value = SLOT_LATCH(myslot.status); | |
327 | } | |
328 | } | |
329 | ||
330 | ibmphp_unlock_operations(); | |
331 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
332 | rc, rc, *value); | |
333 | return rc; | |
334 | } | |
335 | ||
336 | ||
3c78bc61 | 337 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
338 | { |
339 | int rc = -ENODEV; | |
340 | struct slot *pslot; | |
341 | struct slot myslot; | |
342 | ||
343 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
344 | (ulong) hotplug_slot, (ulong) value); | |
345 | ibmphp_lock_operations(); | |
9df7fde5 | 346 | if (hotplug_slot) { |
1da177e4 LT |
347 | pslot = hotplug_slot->private; |
348 | if (pslot) { | |
349 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
350 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
351 | &(myslot.status)); | |
352 | if (!rc) | |
353 | *value = SLOT_PWRGD(myslot.status); | |
354 | } | |
355 | } | |
356 | ||
357 | ibmphp_unlock_operations(); | |
358 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
359 | rc, rc, *value); | |
360 | return rc; | |
361 | } | |
362 | ||
3c78bc61 | 363 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
364 | { |
365 | int rc = -ENODEV; | |
366 | struct slot *pslot; | |
367 | u8 present; | |
368 | struct slot myslot; | |
369 | ||
370 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
371 | (ulong) hotplug_slot, (ulong) value); | |
372 | ibmphp_lock_operations(); | |
9df7fde5 | 373 | if (hotplug_slot) { |
1da177e4 LT |
374 | pslot = hotplug_slot->private; |
375 | if (pslot) { | |
376 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
377 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
378 | &(myslot.status)); | |
379 | if (!rc) { | |
380 | present = SLOT_PRESENT(myslot.status); | |
381 | if (present == HPC_SLOT_EMPTY) | |
382 | *value = 0; | |
383 | else | |
384 | *value = 1; | |
385 | } | |
386 | } | |
387 | } | |
388 | ||
389 | ibmphp_unlock_operations(); | |
390 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
391 | return rc; | |
392 | } | |
393 | ||
3749c51a | 394 | static int get_max_bus_speed(struct slot *slot) |
1da177e4 | 395 | { |
3749c51a | 396 | int rc; |
1da177e4 | 397 | u8 mode = 0; |
3749c51a MW |
398 | enum pci_bus_speed speed; |
399 | struct pci_bus *bus = slot->hotplug_slot->pci_slot->bus; | |
1da177e4 | 400 | |
3749c51a | 401 | debug("%s - Entry slot[%p]\n", __func__, slot); |
1da177e4 LT |
402 | |
403 | ibmphp_lock_operations(); | |
3749c51a | 404 | mode = slot->supported_bus_mode; |
f7625980 | 405 | speed = slot->supported_speed; |
1da177e4 | 406 | ibmphp_unlock_operations(); |
1da177e4 | 407 | |
3749c51a MW |
408 | switch (speed) { |
409 | case BUS_SPEED_33: | |
410 | break; | |
411 | case BUS_SPEED_66: | |
f7625980 | 412 | if (mode == BUS_MODE_PCIX) |
3749c51a MW |
413 | speed += 0x01; |
414 | break; | |
415 | case BUS_SPEED_100: | |
416 | case BUS_SPEED_133: | |
417 | speed += 0x01; | |
418 | break; | |
419 | default: | |
420 | /* Note (will need to change): there would be soon 256, 512 also */ | |
421 | rc = -ENODEV; | |
1da177e4 LT |
422 | } |
423 | ||
3749c51a MW |
424 | if (!rc) |
425 | bus->max_bus_speed = speed; | |
426 | ||
427 | debug("%s - Exit rc[%d] speed[%x]\n", __func__, rc, speed); | |
1da177e4 LT |
428 | return rc; |
429 | } | |
430 | ||
431 | /* | |
3c78bc61 | 432 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 *value, u8 flag) |
1da177e4 LT |
433 | { |
434 | int rc = -ENODEV; | |
435 | struct slot *pslot; | |
436 | struct slot myslot; | |
437 | ||
438 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
439 | (ulong)hotplug_slot, (ulong) value); | |
440 | ||
441 | if (flag) | |
442 | ibmphp_lock_operations(); | |
443 | ||
444 | if (hotplug_slot && value) { | |
445 | pslot = hotplug_slot->private; | |
446 | if (pslot) { | |
447 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
448 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
449 | &(myslot.status)); | |
450 | ||
451 | if (!(SLOT_LATCH (myslot.status)) && | |
452 | (SLOT_PRESENT (myslot.status))) { | |
453 | rc = ibmphp_hpc_readslot(pslot, | |
454 | READ_EXTSLOTSTATUS, | |
455 | &(myslot.ext_status)); | |
456 | if (!rc) | |
457 | *value = SLOT_SPEED(myslot.ext_status); | |
458 | } else | |
459 | *value = MAX_ADAPTER_NONE; | |
ff3ce480 | 460 | } |
1da177e4 LT |
461 | } |
462 | ||
463 | if (flag) | |
464 | ibmphp_unlock_operations(); | |
465 | ||
466 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
467 | return rc; | |
468 | } | |
469 | ||
3c78bc61 | 470 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char *value) |
1da177e4 LT |
471 | { |
472 | int rc = -ENODEV; | |
473 | struct slot *pslot = NULL; | |
474 | ||
475 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
476 | ||
477 | ibmphp_lock_operations(); | |
478 | ||
479 | if (hotplug_slot) { | |
480 | pslot = hotplug_slot->private; | |
481 | if (pslot) { | |
482 | rc = 0; | |
483 | snprintf(value, 100, "Bus %x", pslot->bus); | |
484 | } | |
485 | } else | |
486 | rc = -ENODEV; | |
487 | ||
488 | ibmphp_unlock_operations(); | |
489 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
490 | return rc; | |
491 | } | |
492 | */ | |
493 | ||
494 | /**************************************************************************** | |
495 | * This routine will initialize the ops data structure used in the validate | |
496 | * function. It will also power off empty slots that are powered on since BIOS | |
497 | * leaves those on, albeit disconnected | |
498 | ****************************************************************************/ | |
499 | static int __init init_ops(void) | |
500 | { | |
501 | struct slot *slot_cur; | |
1da177e4 LT |
502 | int retval; |
503 | int rc; | |
504 | ||
2ac83ccc | 505 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
506 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", |
507 | slot_cur->number); | |
f7625980 | 508 | if (slot_cur->ctrl->revision == 0xFF) |
1da177e4 LT |
509 | if (get_ctrl_revision(slot_cur, |
510 | &slot_cur->ctrl->revision)) | |
511 | return -1; | |
512 | ||
f7625980 BH |
513 | if (slot_cur->bus_on->current_speed == 0xFF) |
514 | if (get_cur_bus_info(&slot_cur)) | |
1da177e4 | 515 | return -1; |
3749c51a | 516 | get_max_bus_speed(slot_cur); |
1da177e4 LT |
517 | |
518 | if (slot_cur->ctrl->options == 0xFF) | |
519 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
520 | return -1; | |
521 | ||
522 | retval = slot_update(&slot_cur); | |
523 | if (retval) | |
524 | return retval; | |
525 | ||
526 | debug("status = %x\n", slot_cur->status); | |
527 | debug("ext_status = %x\n", slot_cur->ext_status); | |
528 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
529 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
530 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
531 | ||
f7625980 BH |
532 | if ((SLOT_PWRGD(slot_cur->status)) && |
533 | !(SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
534 | !(SLOT_LATCH(slot_cur->status))) { |
535 | debug("BEFORE POWER OFF COMMAND\n"); | |
536 | rc = power_off(slot_cur); | |
537 | if (rc) | |
538 | return rc; | |
539 | ||
540 | /* retval = slot_update(&slot_cur); | |
541 | * if (retval) | |
542 | * return retval; | |
543 | * ibmphp_update_slot_info(slot_cur); | |
544 | */ | |
545 | } | |
546 | } | |
547 | init_flag = 0; | |
548 | return 0; | |
549 | } | |
550 | ||
551 | /* This operation will check whether the slot is within the bounds and | |
552 | * the operation is valid to perform on that slot | |
553 | * Parameters: slot, operation | |
554 | * Returns: 0 or error codes | |
555 | */ | |
556 | static int validate(struct slot *slot_cur, int opn) | |
557 | { | |
558 | int number; | |
559 | int retval; | |
560 | ||
561 | if (!slot_cur) | |
562 | return -ENODEV; | |
563 | number = slot_cur->number; | |
564 | if ((number > max_slots) || (number < 0)) | |
565 | return -EBADSLT; | |
566 | debug("slot_number in validate is %d\n", slot_cur->number); | |
567 | ||
568 | retval = slot_update(&slot_cur); | |
569 | if (retval) | |
570 | return retval; | |
571 | ||
572 | switch (opn) { | |
573 | case ENABLE: | |
f7625980 BH |
574 | if (!(SLOT_PWRGD(slot_cur->status)) && |
575 | (SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
576 | !(SLOT_LATCH(slot_cur->status))) |
577 | return 0; | |
578 | break; | |
579 | case DISABLE: | |
f7625980 | 580 | if ((SLOT_PWRGD(slot_cur->status)) && |
1da177e4 LT |
581 | (SLOT_PRESENT(slot_cur->status)) && |
582 | !(SLOT_LATCH(slot_cur->status))) | |
583 | return 0; | |
584 | break; | |
585 | default: | |
586 | break; | |
587 | } | |
588 | err("validate failed....\n"); | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
592 | /**************************************************************************** | |
593 | * This routine is for updating the data structures in the hotplug core | |
594 | * Parameters: struct slot | |
595 | * Returns: 0 or error | |
596 | ****************************************************************************/ | |
597 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
598 | { | |
599 | struct hotplug_slot_info *info; | |
3749c51a | 600 | struct pci_bus *bus = slot_cur->hotplug_slot->pci_slot->bus; |
1da177e4 LT |
601 | int rc; |
602 | u8 bus_speed; | |
603 | u8 mode; | |
604 | ||
605 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
606 | if (!info) { | |
607 | err("out of system memory\n"); | |
608 | return -ENOMEM; | |
609 | } | |
f7625980 | 610 | |
1da177e4 LT |
611 | info->power_status = SLOT_PWRGD(slot_cur->status); |
612 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
613 | slot_cur->ext_status); | |
614 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
ff3ce480 BS |
615 | if (!SLOT_PRESENT(slot_cur->status)) { |
616 | info->adapter_status = 0; | |
1da177e4 LT |
617 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ |
618 | } else { | |
ff3ce480 | 619 | info->adapter_status = 1; |
1da177e4 LT |
620 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, |
621 | &info->max_adapter_speed_status, 0); */ | |
622 | } | |
623 | ||
624 | bus_speed = slot_cur->bus_on->current_speed; | |
625 | mode = slot_cur->bus_on->current_bus_mode; | |
626 | ||
627 | switch (bus_speed) { | |
628 | case BUS_SPEED_33: | |
629 | break; | |
630 | case BUS_SPEED_66: | |
f7625980 | 631 | if (mode == BUS_MODE_PCIX) |
1da177e4 LT |
632 | bus_speed += 0x01; |
633 | else if (mode == BUS_MODE_PCI) | |
634 | ; | |
635 | else | |
636 | bus_speed = PCI_SPEED_UNKNOWN; | |
637 | break; | |
638 | case BUS_SPEED_100: | |
639 | case BUS_SPEED_133: | |
640 | bus_speed += 0x01; | |
641 | break; | |
642 | default: | |
643 | bus_speed = PCI_SPEED_UNKNOWN; | |
644 | } | |
645 | ||
3749c51a | 646 | bus->cur_bus_speed = bus_speed; |
f7625980 BH |
647 | // To do: bus_names |
648 | ||
1da177e4 LT |
649 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); |
650 | kfree(info); | |
651 | return rc; | |
652 | } | |
653 | ||
654 | ||
655 | /****************************************************************************** | |
656 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
657 | * is called from visit routines | |
658 | ******************************************************************************/ | |
659 | ||
660 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
661 | { | |
662 | struct pci_func *func_cur; | |
663 | struct slot *slot_cur; | |
2ac83ccc | 664 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
665 | if (slot_cur->func) { |
666 | func_cur = slot_cur->func; | |
667 | while (func_cur) { | |
668 | if ((func_cur->busno == busno) && | |
669 | (func_cur->device == device) && | |
670 | (func_cur->function == function)) | |
671 | return func_cur; | |
672 | func_cur = func_cur->next; | |
673 | } | |
674 | } | |
675 | } | |
676 | return NULL; | |
677 | } | |
678 | ||
679 | /************************************************************* | |
680 | * This routine frees up memory used by struct slot, including | |
681 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
682 | * and deregistering from the hotplug core | |
683 | *************************************************************/ | |
684 | static void free_slots(void) | |
685 | { | |
2ac83ccc | 686 | struct slot *slot_cur, *next; |
1da177e4 | 687 | |
66bef8c0 | 688 | debug("%s -- enter\n", __func__); |
1da177e4 | 689 | |
2ac83ccc GT |
690 | list_for_each_entry_safe(slot_cur, next, &ibmphp_slot_head, |
691 | ibm_slot_list) { | |
1da177e4 LT |
692 | pci_hp_deregister(slot_cur->hotplug_slot); |
693 | } | |
66bef8c0 | 694 | debug("%s -- exit\n", __func__); |
1da177e4 LT |
695 | } |
696 | ||
697 | static void ibm_unconfigure_device(struct pci_func *func) | |
698 | { | |
699 | struct pci_dev *temp; | |
700 | u8 j; | |
701 | ||
66bef8c0 | 702 | debug("inside %s\n", __func__); |
1da177e4 LT |
703 | debug("func->device = %x, func->function = %x\n", |
704 | func->device, func->function); | |
705 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
706 | ||
c4ec84c7 RW |
707 | pci_lock_rescan_remove(); |
708 | ||
1da177e4 | 709 | for (j = 0; j < 0x08; j++) { |
f362b8bf JP |
710 | temp = pci_get_bus_and_slot(func->busno, (func->device << 3) | j); |
711 | if (temp) { | |
210647af | 712 | pci_stop_and_remove_bus_device(temp); |
f362b8bf JP |
713 | pci_dev_put(temp); |
714 | } | |
1da177e4 | 715 | } |
c4ec84c7 | 716 | |
f362b8bf | 717 | pci_dev_put(func->dev); |
c4ec84c7 RW |
718 | |
719 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
720 | } |
721 | ||
722 | /* | |
f7625980 BH |
723 | * The following function is to fix kernel bug regarding |
724 | * getting bus entries, here we manually add those primary | |
1da177e4 LT |
725 | * bus entries to kernel bus structure whenever apply |
726 | */ | |
727 | static u8 bus_structure_fixup(u8 busno) | |
728 | { | |
c90570d9 | 729 | struct pci_bus *bus, *b; |
1da177e4 LT |
730 | struct pci_dev *dev; |
731 | u16 l; | |
732 | ||
733 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
734 | return 1; | |
735 | ||
736 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
737 | if (!bus) { | |
66bef8c0 | 738 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
739 | return 1; |
740 | } | |
741 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
742 | if (!dev) { | |
743 | kfree(bus); | |
66bef8c0 | 744 | err("%s - out of memory\n", __func__); |
1da177e4 LT |
745 | return 1; |
746 | } | |
747 | ||
748 | bus->number = busno; | |
749 | bus->ops = ibmphp_pci_bus->ops; | |
750 | dev->bus = bus; | |
751 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
752 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
753 | (l != 0x0000) && (l != 0xffff)) { | |
367fa982 | 754 | debug("%s - Inside bus_structure_fixup()\n", |
66bef8c0 | 755 | __func__); |
c90570d9 YW |
756 | b = pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); |
757 | if (!b) | |
758 | continue; | |
759 | ||
760 | pci_bus_add_devices(b); | |
1da177e4 LT |
761 | break; |
762 | } | |
763 | } | |
764 | ||
765 | kfree(dev); | |
766 | kfree(bus); | |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
771 | static int ibm_configure_device(struct pci_func *func) | |
772 | { | |
1da177e4 LT |
773 | struct pci_bus *child; |
774 | int num; | |
775 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
776 | for bridged devices primarily */ | |
777 | ||
c4ec84c7 RW |
778 | pci_lock_rescan_remove(); |
779 | ||
1da177e4 LT |
780 | if (!(bus_structure_fixup(func->busno))) |
781 | flag = 1; | |
782 | if (func->dev == NULL) | |
f362b8bf | 783 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
784 | PCI_DEVFN(func->device, func->function)); |
785 | ||
786 | if (func->dev == NULL) { | |
787 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
788 | if (!bus) | |
c4ec84c7 | 789 | goto out; |
1da177e4 LT |
790 | |
791 | num = pci_scan_slot(bus, | |
792 | PCI_DEVFN(func->device, func->function)); | |
793 | if (num) | |
794 | pci_bus_add_devices(bus); | |
795 | ||
f362b8bf | 796 | func->dev = pci_get_bus_and_slot(func->busno, |
1da177e4 LT |
797 | PCI_DEVFN(func->device, func->function)); |
798 | if (func->dev == NULL) { | |
799 | err("ERROR... : pci_dev still NULL\n"); | |
c4ec84c7 | 800 | goto out; |
1da177e4 LT |
801 | } |
802 | } | |
803 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
2d7abf32 YL |
804 | pci_hp_add_bridge(func->dev); |
805 | child = func->dev->subordinate; | |
806 | if (child) | |
807 | pci_bus_add_devices(child); | |
1da177e4 LT |
808 | } |
809 | ||
c4ec84c7 RW |
810 | out: |
811 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
812 | return 0; |
813 | } | |
814 | ||
815 | /******************************************************* | |
f7625980 | 816 | * Returns whether the bus is empty or not |
1da177e4 | 817 | *******************************************************/ |
3c78bc61 | 818 | static int is_bus_empty(struct slot *slot_cur) |
1da177e4 LT |
819 | { |
820 | int rc; | |
3c78bc61 | 821 | struct slot *tmp_slot; |
1da177e4 LT |
822 | u8 i = slot_cur->bus_on->slot_min; |
823 | ||
824 | while (i <= slot_cur->bus_on->slot_max) { | |
825 | if (i == slot_cur->number) { | |
826 | i++; | |
827 | continue; | |
828 | } | |
829 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
830 | if (!tmp_slot) | |
831 | return 0; | |
832 | rc = slot_update(&tmp_slot); | |
833 | if (rc) | |
834 | return 0; | |
835 | if (SLOT_PRESENT(tmp_slot->status) && | |
836 | SLOT_PWRGD(tmp_slot->status)) | |
837 | return 0; | |
838 | i++; | |
839 | } | |
840 | return 1; | |
841 | } | |
842 | ||
843 | /*********************************************************** | |
f7625980 | 844 | * If the HPC permits and the bus currently empty, tries to set the |
1da177e4 LT |
845 | * bus speed and mode at the maximum card and bus capability |
846 | * Parameters: slot | |
847 | * Returns: bus is set (0) or error code | |
848 | ***********************************************************/ | |
3c78bc61 | 849 | static int set_bus(struct slot *slot_cur) |
1da177e4 LT |
850 | { |
851 | int rc; | |
852 | u8 speed; | |
853 | u8 cmd = 0x0; | |
854 | int retval; | |
855 | static struct pci_device_id ciobx[] = { | |
856 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, | |
ff3ce480 | 857 | { }, |
f7625980 | 858 | }; |
1da177e4 | 859 | |
66bef8c0 | 860 | debug("%s - entry slot # %d\n", __func__, slot_cur->number); |
1da177e4 LT |
861 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { |
862 | rc = slot_update(&slot_cur); | |
863 | if (rc) | |
864 | return rc; | |
865 | speed = SLOT_SPEED(slot_cur->ext_status); | |
866 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
867 | switch (speed) { | |
868 | case HPC_SLOT_SPEED_33: | |
869 | cmd = HPC_BUS_33CONVMODE; | |
870 | break; | |
871 | case HPC_SLOT_SPEED_66: | |
872 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
873 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
874 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
875 | cmd = HPC_BUS_66PCIXMODE; | |
876 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
877 | /* if max slot/bus capability is 66 pci | |
878 | and there's no bus mode mismatch, then | |
f7625980 | 879 | the adapter supports 66 pci */ |
1da177e4 LT |
880 | cmd = HPC_BUS_66CONVMODE; |
881 | else | |
882 | cmd = HPC_BUS_33CONVMODE; | |
883 | } else { | |
884 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
885 | cmd = HPC_BUS_66CONVMODE; | |
886 | else | |
887 | cmd = HPC_BUS_33CONVMODE; | |
888 | } | |
889 | break; | |
890 | case HPC_SLOT_SPEED_133: | |
891 | switch (slot_cur->supported_speed) { | |
892 | case BUS_SPEED_33: | |
893 | cmd = HPC_BUS_33CONVMODE; | |
894 | break; | |
895 | case BUS_SPEED_66: | |
896 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
897 | cmd = HPC_BUS_66PCIXMODE; | |
898 | else | |
899 | cmd = HPC_BUS_66CONVMODE; | |
900 | break; | |
901 | case BUS_SPEED_100: | |
902 | cmd = HPC_BUS_100PCIXMODE; | |
903 | break; | |
904 | case BUS_SPEED_133: | |
905 | /* This is to take care of the bug in CIOBX chip */ | |
906 | if (pci_dev_present(ciobx)) | |
907 | ibmphp_hpc_writeslot(slot_cur, | |
908 | HPC_BUS_100PCIXMODE); | |
909 | cmd = HPC_BUS_133PCIXMODE; | |
910 | break; | |
911 | default: | |
912 | err("Wrong bus speed\n"); | |
913 | return -ENODEV; | |
914 | } | |
915 | break; | |
916 | default: | |
917 | err("wrong slot speed\n"); | |
918 | return -ENODEV; | |
919 | } | |
920 | debug("setting bus speed for slot %d, cmd %x\n", | |
921 | slot_cur->number, cmd); | |
922 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
923 | if (retval) { | |
924 | err("setting bus speed failed\n"); | |
925 | return retval; | |
926 | } | |
927 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
928 | err("command not completed successfully in set_bus\n"); | |
929 | return -EIO; | |
930 | } | |
931 | } | |
f7625980 | 932 | /* This is for x440, once Brandon fixes the firmware, |
1da177e4 LT |
933 | will not need this delay */ |
934 | msleep(1000); | |
66bef8c0 | 935 | debug("%s -Exit\n", __func__); |
1da177e4 LT |
936 | return 0; |
937 | } | |
938 | ||
939 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
f7625980 | 940 | * This is used in deciding whether or not to power up the slot. |
1da177e4 | 941 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on |
f7625980 | 942 | * same bus) |
1da177e4 LT |
943 | * Parameters: slot |
944 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
945 | */ | |
946 | static int check_limitations(struct slot *slot_cur) | |
947 | { | |
948 | u8 i; | |
3c78bc61 | 949 | struct slot *tmp_slot; |
1da177e4 LT |
950 | u8 count = 0; |
951 | u8 limitation = 0; | |
952 | ||
953 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
954 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
955 | if (!tmp_slot) | |
956 | return -ENODEV; | |
957 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
958 | !(SLOT_CONNECT(tmp_slot->status))) | |
959 | count++; | |
960 | } | |
961 | get_cur_bus_info(&slot_cur); | |
962 | switch (slot_cur->bus_on->current_speed) { | |
963 | case BUS_SPEED_33: | |
964 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
965 | break; | |
966 | case BUS_SPEED_66: | |
967 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
968 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
969 | else | |
970 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
971 | break; | |
972 | case BUS_SPEED_100: | |
973 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
974 | break; | |
975 | case BUS_SPEED_133: | |
976 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
977 | break; | |
978 | } | |
979 | ||
980 | if ((count + 1) > limitation) | |
981 | return -EINVAL; | |
982 | return 0; | |
983 | } | |
984 | ||
985 | static inline void print_card_capability(struct slot *slot_cur) | |
986 | { | |
987 | info("capability of the card is "); | |
f7625980 | 988 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) |
1da177e4 LT |
989 | info(" 133 MHz PCI-X\n"); |
990 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
991 | info(" 66 MHz PCI-X\n"); | |
992 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
993 | info(" 66 MHz PCI\n"); | |
994 | else | |
995 | info(" 33 MHz PCI\n"); | |
996 | ||
997 | } | |
998 | ||
999 | /* This routine will power on the slot, configure the device(s) and find the | |
1000 | * drivers for them. | |
1001 | * Parameters: hotplug_slot | |
1002 | * Returns: 0 or failure codes | |
1003 | */ | |
1004 | static int enable_slot(struct hotplug_slot *hs) | |
1005 | { | |
1006 | int rc, i, rcpr; | |
1007 | struct slot *slot_cur; | |
1008 | u8 function; | |
1009 | struct pci_func *tmp_func; | |
1010 | ||
1011 | ibmphp_lock_operations(); | |
1012 | ||
1013 | debug("ENABLING SLOT........\n"); | |
1014 | slot_cur = hs->private; | |
1015 | ||
79e50e72 QL |
1016 | rc = validate(slot_cur, ENABLE); |
1017 | if (rc) { | |
1da177e4 LT |
1018 | err("validate function failed\n"); |
1019 | goto error_nopower; | |
1020 | } | |
1021 | ||
1022 | attn_LED_blink(slot_cur); | |
f7625980 | 1023 | |
1da177e4 LT |
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"); | |
227f0647 | 1039 | err("(i.e., >1 133MHz cards running on same bus, or >2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1040 | err("Try hot-adding into another bus\n"); |
1041 | rc = -EINVAL; | |
1042 | goto error_nopower; | |
1043 | } | |
1044 | ||
1045 | rc = power_on(slot_cur); | |
1046 | ||
1047 | if (rc) { | |
1048 | err("something wrong when powering up... please see below for details\n"); | |
1049 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1050 | attn_off(slot_cur); | |
1051 | attn_on(slot_cur); | |
1052 | if (slot_update(&slot_cur)) { | |
1053 | attn_off(slot_cur); | |
1054 | attn_on(slot_cur); | |
1055 | rc = -ENODEV; | |
1056 | goto exit; | |
1057 | } | |
1058 | /* Check to see the error of why it failed */ | |
1059 | if ((SLOT_POWER(slot_cur->status)) && | |
1060 | !(SLOT_PWRGD(slot_cur->status))) | |
1061 | err("power fault occurred trying to power up\n"); | |
1062 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
227f0647 | 1063 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1064 | print_card_capability(slot_cur); |
1065 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
227f0647 | 1066 | err("bus mode mismatch occurred. please check current bus mode and card capability\n"); |
1da177e4 LT |
1067 | print_card_capability(slot_cur); |
1068 | } | |
1069 | ibmphp_update_slot_info(slot_cur); | |
1070 | goto exit; | |
1071 | } | |
1072 | debug("after power_on\n"); | |
1073 | /*-----------------------debugging---------------------------*/ | |
1074 | get_cur_bus_info(&slot_cur); | |
1075 | debug("the current bus speed right after power_on = %x\n", | |
1076 | slot_cur->bus_on->current_speed); | |
1077 | /*----------------------------------------------------------*/ | |
1078 | ||
1079 | rc = slot_update(&slot_cur); | |
1080 | if (rc) | |
1081 | goto error_power; | |
f7625980 | 1082 | |
1da177e4 LT |
1083 | rc = -EINVAL; |
1084 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1085 | err("power fault occurred trying to power up...\n"); | |
1086 | goto error_power; | |
1087 | } | |
1088 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
227f0647 | 1089 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1090 | print_card_capability(slot_cur); |
1091 | goto error_power; | |
f7625980 | 1092 | } |
1da177e4 LT |
1093 | /* Don't think this case will happen after above checks... |
1094 | * but just in case, for paranoia sake */ | |
1095 | if (!(SLOT_POWER(slot_cur->status))) { | |
1096 | err("power on failed...\n"); | |
1097 | goto error_power; | |
1098 | } | |
1099 | ||
f5afe806 | 1100 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1101 | if (!slot_cur->func) { |
1102 | /* We cannot do update_slot_info here, since no memory for | |
1103 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1104 | err("out of system memory\n"); | |
1105 | rc = -ENOMEM; | |
1106 | goto error_power; | |
1107 | } | |
1da177e4 LT |
1108 | slot_cur->func->busno = slot_cur->bus; |
1109 | slot_cur->func->device = slot_cur->device; | |
1110 | for (i = 0; i < 4; i++) | |
1111 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1112 | ||
1113 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1114 | slot_cur->bus, slot_cur->device); | |
1115 | ||
1116 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1117 | err("configure_card was unsuccessful...\n"); | |
1118 | /* true because don't need to actually deallocate resources, | |
1119 | * just remove references */ | |
1120 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1121 | debug("after unconfigure_card\n"); | |
1122 | slot_cur->func = NULL; | |
1123 | rc = -ENOMEM; | |
1124 | goto error_power; | |
1125 | } | |
1126 | ||
1127 | function = 0x00; | |
1128 | do { | |
1129 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1130 | function++); | |
1131 | if (tmp_func && !(tmp_func->dev)) | |
1132 | ibm_configure_device(tmp_func); | |
1133 | } while (tmp_func); | |
1134 | ||
1135 | attn_off(slot_cur); | |
1136 | if (slot_update(&slot_cur)) { | |
1137 | rc = -EFAULT; | |
1138 | goto exit; | |
1139 | } | |
1140 | ibmphp_print_test(); | |
1141 | rc = ibmphp_update_slot_info(slot_cur); | |
1142 | exit: | |
f7625980 | 1143 | ibmphp_unlock_operations(); |
1da177e4 LT |
1144 | return rc; |
1145 | ||
1146 | error_nopower: | |
1147 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1148 | attn_on(slot_cur); | |
1149 | error_cont: | |
1150 | rcpr = slot_update(&slot_cur); | |
1151 | if (rcpr) { | |
1152 | rc = rcpr; | |
1153 | goto exit; | |
1154 | } | |
1155 | ibmphp_update_slot_info(slot_cur); | |
1156 | goto exit; | |
1157 | ||
1158 | error_power: | |
1159 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1160 | attn_on(slot_cur); | |
1161 | rcpr = power_off(slot_cur); | |
1162 | if (rcpr) { | |
1163 | rc = rcpr; | |
1164 | goto exit; | |
1165 | } | |
1166 | goto error_cont; | |
1167 | } | |
1168 | ||
1169 | /************************************************************** | |
1170 | * HOT REMOVING ADAPTER CARD * | |
1171 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1172 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
ff3ce480 | 1173 | * DISABLE POWER , * |
1da177e4 LT |
1174 | **************************************************************/ |
1175 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1176 | { | |
1177 | struct slot *slot = hotplug_slot->private; | |
1178 | int rc; | |
f7625980 | 1179 | |
1da177e4 LT |
1180 | ibmphp_lock_operations(); |
1181 | rc = ibmphp_do_disable_slot(slot); | |
1182 | ibmphp_unlock_operations(); | |
1183 | return rc; | |
1184 | } | |
1185 | ||
1186 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1187 | { | |
1188 | int rc; | |
1189 | u8 flag; | |
1190 | ||
f7625980 BH |
1191 | debug("DISABLING SLOT...\n"); |
1192 | ||
656f978f | 1193 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) |
1da177e4 | 1194 | return -ENODEV; |
f7625980 | 1195 | |
1da177e4 | 1196 | flag = slot_cur->flag; |
dc6712d1 | 1197 | slot_cur->flag = 1; |
1da177e4 | 1198 | |
dc6712d1 | 1199 | if (flag == 1) { |
1da177e4 LT |
1200 | rc = validate(slot_cur, DISABLE); |
1201 | /* checking if powered off already & valid slot # */ | |
1202 | if (rc) | |
1203 | goto error; | |
1204 | } | |
1205 | attn_LED_blink(slot_cur); | |
1206 | ||
1207 | if (slot_cur->func == NULL) { | |
f7625980 | 1208 | /* We need this for functions that were there on bootup */ |
f5afe806 | 1209 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1210 | if (!slot_cur->func) { |
1211 | err("out of system memory\n"); | |
1212 | rc = -ENOMEM; | |
1213 | goto error; | |
1214 | } | |
1da177e4 LT |
1215 | slot_cur->func->busno = slot_cur->bus; |
1216 | slot_cur->func->device = slot_cur->device; | |
1217 | } | |
1218 | ||
1219 | ibm_unconfigure_device(slot_cur->func); | |
f7625980 BH |
1220 | |
1221 | /* | |
1222 | * If we got here from latch suddenly opening on operating card or | |
1223 | * a power fault, there's no power to the card, so cannot | |
1224 | * read from it to determine what resources it occupied. This operation | |
1225 | * is forbidden anyhow. The best we can do is remove it from kernel | |
1226 | * lists at least */ | |
1da177e4 LT |
1227 | |
1228 | if (!flag) { | |
1229 | attn_off(slot_cur); | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1234 | slot_cur->func = NULL; | |
1235 | debug("in disable_slot. after unconfigure_card\n"); | |
1236 | if (rc) { | |
1237 | err("could not unconfigure card.\n"); | |
1238 | goto error; | |
1239 | } | |
1240 | ||
1241 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1242 | if (rc) | |
1243 | goto error; | |
1244 | ||
1245 | attn_off(slot_cur); | |
1246 | rc = slot_update(&slot_cur); | |
1247 | if (rc) | |
1248 | goto exit; | |
1249 | ||
1250 | rc = ibmphp_update_slot_info(slot_cur); | |
1251 | ibmphp_print_test(); | |
1252 | exit: | |
1253 | return rc; | |
1254 | ||
1255 | error: | |
1256 | /* Need to turn off if was blinking b4 */ | |
1257 | attn_off(slot_cur); | |
1258 | attn_on(slot_cur); | |
1259 | if (slot_update(&slot_cur)) { | |
1260 | rc = -EFAULT; | |
1261 | goto exit; | |
1262 | } | |
f7625980 | 1263 | if (flag) |
1da177e4 LT |
1264 | ibmphp_update_slot_info(slot_cur); |
1265 | goto exit; | |
1266 | } | |
1267 | ||
1268 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1da177e4 LT |
1269 | .set_attention_status = set_attention_status, |
1270 | .enable_slot = enable_slot, | |
1271 | .disable_slot = ibmphp_disable_slot, | |
1272 | .hardware_test = NULL, | |
1273 | .get_power_status = get_power_status, | |
1274 | .get_attention_status = get_attention_status, | |
1275 | .get_latch_status = get_latch_status, | |
1276 | .get_adapter_status = get_adapter_present, | |
1da177e4 LT |
1277 | /* .get_max_adapter_speed = get_max_adapter_speed, |
1278 | .get_bus_name_status = get_bus_name, | |
1279 | */ | |
1280 | }; | |
1281 | ||
1282 | static void ibmphp_unload(void) | |
1283 | { | |
1284 | free_slots(); | |
1285 | debug("after slots\n"); | |
1286 | ibmphp_free_resources(); | |
1287 | debug("after resources\n"); | |
1288 | ibmphp_free_bus_info_queue(); | |
1289 | debug("after bus info\n"); | |
1290 | ibmphp_free_ebda_hpc_queue(); | |
1291 | debug("after ebda hpc\n"); | |
1292 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1293 | debug("after ebda pci rsrc\n"); | |
1294 | kfree(ibmphp_pci_bus); | |
1295 | } | |
1296 | ||
1297 | static int __init ibmphp_init(void) | |
1298 | { | |
1299 | struct pci_bus *bus; | |
1300 | int i = 0; | |
1301 | int rc = 0; | |
1302 | ||
1303 | init_flag = 1; | |
1304 | ||
1305 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1306 | ||
1307 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1308 | if (!ibmphp_pci_bus) { | |
1309 | err("out of memory\n"); | |
1310 | rc = -ENOMEM; | |
1311 | goto exit; | |
1312 | } | |
1313 | ||
1314 | bus = pci_find_bus(0, 0); | |
1315 | if (!bus) { | |
1316 | err("Can't find the root pci bus, can not continue\n"); | |
1317 | rc = -ENODEV; | |
1318 | goto error; | |
1319 | } | |
1320 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1321 | ||
1322 | ibmphp_debug = debug; | |
1323 | ||
1324 | ibmphp_hpc_initvars(); | |
1325 | ||
1326 | for (i = 0; i < 16; i++) | |
1327 | irqs[i] = 0; | |
1328 | ||
79e50e72 QL |
1329 | rc = ibmphp_access_ebda(); |
1330 | if (rc) | |
1da177e4 LT |
1331 | goto error; |
1332 | debug("after ibmphp_access_ebda()\n"); | |
1333 | ||
79e50e72 QL |
1334 | rc = ibmphp_rsrc_init(); |
1335 | if (rc) | |
1da177e4 LT |
1336 | goto error; |
1337 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1338 | ||
1339 | max_slots = get_max_slots(); | |
f7625980 | 1340 | |
79e50e72 QL |
1341 | rc = ibmphp_register_pci(); |
1342 | if (rc) | |
1da177e4 LT |
1343 | goto error; |
1344 | ||
1345 | if (init_ops()) { | |
1346 | rc = -ENODEV; | |
1347 | goto error; | |
1348 | } | |
1349 | ||
1350 | ibmphp_print_test(); | |
79e50e72 QL |
1351 | rc = ibmphp_hpc_start_poll_thread(); |
1352 | if (rc) | |
1da177e4 | 1353 | goto error; |
1da177e4 | 1354 | |
1da177e4 LT |
1355 | exit: |
1356 | return rc; | |
1357 | ||
1358 | error: | |
1359 | ibmphp_unload(); | |
1360 | goto exit; | |
1361 | } | |
1362 | ||
1363 | static void __exit ibmphp_exit(void) | |
1364 | { | |
1365 | ibmphp_hpc_stop_poll_thread(); | |
1366 | debug("after polling\n"); | |
1367 | ibmphp_unload(); | |
1368 | debug("done\n"); | |
1369 | } | |
1370 | ||
1371 | module_init(ibmphp_init); | |
64f039d3 | 1372 | module_exit(ibmphp_exit); |