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736759ef | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 LT |
2 | /* |
3 | * IBM Hot Plug Controller Driver | |
4 | * | |
5 | * Written By: Chuck Cole, Jyoti Shah, Tong Yu, Irene Zubarev, IBM Corporation | |
6 | * | |
7 | * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com) | |
8 | * Copyright (C) 2001-2003 IBM Corp. | |
9 | * | |
10 | * All rights reserved. | |
11 | * | |
1da177e4 LT |
12 | * Send feedback to <gregkh@us.ibm.com> |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/init.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/wait.h> | |
1da177e4 | 23 | #include "../pci.h" |
82487711 | 24 | #include <asm/pci_x86.h> /* for struct irq_routing_table */ |
8643e28d | 25 | #include <asm/io_apic.h> |
1da177e4 LT |
26 | #include "ibmphp.h" |
27 | ||
ff3ce480 BS |
28 | #define attn_on(sl) ibmphp_hpc_writeslot(sl, HPC_SLOT_ATTNON) |
29 | #define attn_off(sl) ibmphp_hpc_writeslot(sl, HPC_SLOT_ATTNOFF) | |
30 | #define attn_LED_blink(sl) ibmphp_hpc_writeslot(sl, HPC_SLOT_BLINKLED) | |
31 | #define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot(sl, READ_REVLEVEL, rev) | |
32 | #define get_hpc_options(sl, opt) ibmphp_hpc_readslot(sl, READ_HPCOPTIONS, opt) | |
1da177e4 LT |
33 | |
34 | #define DRIVER_VERSION "0.6" | |
35 | #define DRIVER_DESC "IBM Hot Plug PCI Controller Driver" | |
36 | ||
37 | int ibmphp_debug; | |
38 | ||
90ab5ee9 | 39 | static bool debug; |
1da177e4 | 40 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
ff3ce480 BS |
41 | MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); |
42 | MODULE_LICENSE("GPL"); | |
43 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
44 | |
45 | struct pci_bus *ibmphp_pci_bus; | |
46 | static int max_slots; | |
47 | ||
f7625980 | 48 | static int irqs[16]; /* PIC mode IRQs we're using so far (in case MPS |
1da177e4 LT |
49 | * tables don't provide default info for empty slots */ |
50 | ||
51 | static int init_flag; | |
52 | ||
53 | /* | |
54 | static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8); | |
55 | ||
56 | static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value) | |
57 | { | |
58 | return get_max_adapter_speed_1 (hs, value, 1); | |
59 | } | |
60 | */ | |
f7625980 | 61 | static inline int get_cur_bus_info(struct slot **sl) |
1da177e4 LT |
62 | { |
63 | int rc = 1; | |
3c78bc61 | 64 | struct slot *slot_cur = *sl; |
1da177e4 LT |
65 | |
66 | debug("options = %x\n", slot_cur->ctrl->options); | |
f7625980 | 67 | debug("revision = %x\n", slot_cur->ctrl->revision); |
1da177e4 | 68 | |
f7625980 | 69 | if (READ_BUS_STATUS(slot_cur->ctrl)) |
1da177e4 | 70 | rc = ibmphp_hpc_readslot(slot_cur, READ_BUSSTATUS, NULL); |
f7625980 BH |
71 | |
72 | if (rc) | |
1da177e4 | 73 | return rc; |
f7625980 | 74 | |
1da177e4 LT |
75 | slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED(slot_cur->busstatus); |
76 | if (READ_BUS_MODE(slot_cur->ctrl)) | |
77 | slot_cur->bus_on->current_bus_mode = | |
78 | CURRENT_BUS_MODE(slot_cur->busstatus); | |
79 | else | |
80 | slot_cur->bus_on->current_bus_mode = 0xFF; | |
81 | ||
82 | debug("busstatus = %x, bus_speed = %x, bus_mode = %x\n", | |
83 | slot_cur->busstatus, | |
84 | slot_cur->bus_on->current_speed, | |
85 | slot_cur->bus_on->current_bus_mode); | |
f7625980 | 86 | |
1da177e4 LT |
87 | *sl = slot_cur; |
88 | return 0; | |
89 | } | |
90 | ||
91 | static inline int slot_update(struct slot **sl) | |
92 | { | |
93 | int rc; | |
f7625980 BH |
94 | rc = ibmphp_hpc_readslot(*sl, READ_ALLSTAT, NULL); |
95 | if (rc) | |
1da177e4 LT |
96 | return rc; |
97 | if (!init_flag) | |
98 | rc = get_cur_bus_info(sl); | |
99 | return rc; | |
100 | } | |
101 | ||
ff3ce480 | 102 | static int __init get_max_slots(void) |
1da177e4 | 103 | { |
3c78bc61 | 104 | struct slot *slot_cur; |
1da177e4 LT |
105 | u8 slot_count = 0; |
106 | ||
2ac83ccc | 107 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
108 | /* sometimes the hot-pluggable slots start with 4 (not always from 1) */ |
109 | slot_count = max(slot_count, slot_cur->number); | |
110 | } | |
111 | return slot_count; | |
112 | } | |
113 | ||
114 | /* This routine will put the correct slot->device information per slot. It's | |
115 | * called from initialization of the slot structures. It will also assign | |
116 | * interrupt numbers per each slot. | |
117 | * Parameters: struct slot | |
118 | * Returns 0 or errors | |
119 | */ | |
120 | int ibmphp_init_devno(struct slot **cur_slot) | |
121 | { | |
122 | struct irq_routing_table *rtable; | |
123 | int len; | |
124 | int loop; | |
125 | int i; | |
126 | ||
127 | rtable = pcibios_get_irq_routing_table(); | |
128 | if (!rtable) { | |
129 | err("no BIOS routing table...\n"); | |
130 | return -ENOMEM; | |
131 | } | |
132 | ||
133 | len = (rtable->size - sizeof(struct irq_routing_table)) / | |
134 | sizeof(struct irq_info); | |
135 | ||
029c3c13 JJ |
136 | if (!len) { |
137 | kfree(rtable); | |
1da177e4 | 138 | return -1; |
029c3c13 | 139 | } |
1da177e4 | 140 | for (loop = 0; loop < len; loop++) { |
e20c06fd YL |
141 | if ((*cur_slot)->number == rtable->slots[loop].slot && |
142 | (*cur_slot)->bus == rtable->slots[loop].bus) { | |
1da177e4 LT |
143 | (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); |
144 | for (i = 0; i < 4; i++) | |
145 | (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, | |
25d0d35e | 146 | (int) (*cur_slot)->device, i); |
e20c06fd YL |
147 | |
148 | debug("(*cur_slot)->irq[0] = %x\n", | |
149 | (*cur_slot)->irq[0]); | |
150 | debug("(*cur_slot)->irq[1] = %x\n", | |
151 | (*cur_slot)->irq[1]); | |
152 | debug("(*cur_slot)->irq[2] = %x\n", | |
153 | (*cur_slot)->irq[2]); | |
154 | debug("(*cur_slot)->irq[3] = %x\n", | |
155 | (*cur_slot)->irq[3]); | |
156 | ||
f7625980 | 157 | debug("rtable->exclusive_irqs = %x\n", |
1da177e4 | 158 | rtable->exclusive_irqs); |
e20c06fd | 159 | debug("rtable->slots[loop].irq[0].bitmap = %x\n", |
1da177e4 | 160 | rtable->slots[loop].irq[0].bitmap); |
e20c06fd | 161 | debug("rtable->slots[loop].irq[1].bitmap = %x\n", |
1da177e4 | 162 | rtable->slots[loop].irq[1].bitmap); |
e20c06fd | 163 | debug("rtable->slots[loop].irq[2].bitmap = %x\n", |
1da177e4 | 164 | rtable->slots[loop].irq[2].bitmap); |
e20c06fd | 165 | debug("rtable->slots[loop].irq[3].bitmap = %x\n", |
1da177e4 LT |
166 | rtable->slots[loop].irq[3].bitmap); |
167 | ||
e20c06fd | 168 | debug("rtable->slots[loop].irq[0].link = %x\n", |
1da177e4 | 169 | rtable->slots[loop].irq[0].link); |
e20c06fd | 170 | debug("rtable->slots[loop].irq[1].link = %x\n", |
1da177e4 | 171 | rtable->slots[loop].irq[1].link); |
e20c06fd | 172 | debug("rtable->slots[loop].irq[2].link = %x\n", |
1da177e4 | 173 | rtable->slots[loop].irq[2].link); |
e20c06fd | 174 | debug("rtable->slots[loop].irq[3].link = %x\n", |
1da177e4 | 175 | rtable->slots[loop].irq[3].link); |
e20c06fd YL |
176 | debug("end of init_devno\n"); |
177 | kfree(rtable); | |
178 | return 0; | |
1da177e4 LT |
179 | } |
180 | } | |
181 | ||
029c3c13 | 182 | kfree(rtable); |
1da177e4 LT |
183 | return -1; |
184 | } | |
185 | ||
186 | static inline int power_on(struct slot *slot_cur) | |
187 | { | |
188 | u8 cmd = HPC_SLOT_ON; | |
189 | int retval; | |
190 | ||
191 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
192 | if (retval) { | |
193 | err("power on failed\n"); | |
194 | return retval; | |
195 | } | |
196 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
197 | err("command not completed successfully in power_on\n"); | |
198 | return -EIO; | |
199 | } | |
200 | msleep(3000); /* For ServeRAID cards, and some 66 PCI */ | |
201 | return 0; | |
202 | } | |
203 | ||
204 | static inline int power_off(struct slot *slot_cur) | |
205 | { | |
206 | u8 cmd = HPC_SLOT_OFF; | |
207 | int retval; | |
208 | ||
209 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
210 | if (retval) { | |
211 | err("power off failed\n"); | |
212 | return retval; | |
213 | } | |
214 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
215 | err("command not completed successfully in power_off\n"); | |
216 | retval = -EIO; | |
217 | } | |
218 | return retval; | |
219 | } | |
220 | ||
221 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value) | |
222 | { | |
223 | int rc = 0; | |
224 | struct slot *pslot; | |
072888fa | 225 | u8 cmd = 0x00; /* avoid compiler warning */ |
1da177e4 LT |
226 | |
227 | debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", | |
228 | (ulong) hotplug_slot, value); | |
229 | ibmphp_lock_operations(); | |
072888fa | 230 | |
1da177e4 LT |
231 | |
232 | if (hotplug_slot) { | |
233 | switch (value) { | |
234 | case HPC_SLOT_ATTN_OFF: | |
235 | cmd = HPC_SLOT_ATTNOFF; | |
236 | break; | |
237 | case HPC_SLOT_ATTN_ON: | |
238 | cmd = HPC_SLOT_ATTNON; | |
239 | break; | |
240 | case HPC_SLOT_ATTN_BLINK: | |
241 | cmd = HPC_SLOT_BLINKLED; | |
242 | break; | |
243 | default: | |
244 | rc = -ENODEV; | |
245 | err("set_attention_status - Error : invalid input [%x]\n", | |
246 | value); | |
247 | break; | |
248 | } | |
249 | if (rc == 0) { | |
250 | pslot = hotplug_slot->private; | |
251 | if (pslot) | |
252 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
253 | else | |
254 | rc = -ENODEV; | |
255 | } | |
f7625980 | 256 | } else |
1da177e4 LT |
257 | rc = -ENODEV; |
258 | ||
259 | ibmphp_unlock_operations(); | |
260 | ||
261 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
262 | return rc; | |
263 | } | |
264 | ||
3c78bc61 | 265 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
266 | { |
267 | int rc = -ENODEV; | |
268 | struct slot *pslot; | |
269 | struct slot myslot; | |
270 | ||
271 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
272 | (ulong) hotplug_slot, (ulong) value); | |
f7625980 | 273 | |
1da177e4 | 274 | ibmphp_lock_operations(); |
9df7fde5 | 275 | if (hotplug_slot) { |
1da177e4 LT |
276 | pslot = hotplug_slot->private; |
277 | if (pslot) { | |
278 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
279 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
280 | &(myslot.status)); | |
281 | if (!rc) | |
282 | rc = ibmphp_hpc_readslot(pslot, | |
283 | READ_EXTSLOTSTATUS, | |
284 | &(myslot.ext_status)); | |
285 | if (!rc) | |
286 | *value = SLOT_ATTN(myslot.status, | |
287 | myslot.ext_status); | |
288 | } | |
289 | } | |
290 | ||
291 | ibmphp_unlock_operations(); | |
292 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
293 | return rc; | |
294 | } | |
295 | ||
3c78bc61 | 296 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
297 | { |
298 | int rc = -ENODEV; | |
299 | struct slot *pslot; | |
300 | struct slot myslot; | |
301 | ||
302 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
303 | (ulong) hotplug_slot, (ulong) value); | |
304 | ibmphp_lock_operations(); | |
9df7fde5 | 305 | if (hotplug_slot) { |
1da177e4 LT |
306 | pslot = hotplug_slot->private; |
307 | if (pslot) { | |
308 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
309 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
310 | &(myslot.status)); | |
311 | if (!rc) | |
312 | *value = SLOT_LATCH(myslot.status); | |
313 | } | |
314 | } | |
315 | ||
316 | ibmphp_unlock_operations(); | |
317 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
318 | rc, rc, *value); | |
319 | return rc; | |
320 | } | |
321 | ||
322 | ||
3c78bc61 | 323 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
324 | { |
325 | int rc = -ENODEV; | |
326 | struct slot *pslot; | |
327 | struct slot myslot; | |
328 | ||
329 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
330 | (ulong) hotplug_slot, (ulong) value); | |
331 | ibmphp_lock_operations(); | |
9df7fde5 | 332 | if (hotplug_slot) { |
1da177e4 LT |
333 | pslot = hotplug_slot->private; |
334 | if (pslot) { | |
335 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
336 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
337 | &(myslot.status)); | |
338 | if (!rc) | |
339 | *value = SLOT_PWRGD(myslot.status); | |
340 | } | |
341 | } | |
342 | ||
343 | ibmphp_unlock_operations(); | |
344 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
345 | rc, rc, *value); | |
346 | return rc; | |
347 | } | |
348 | ||
3c78bc61 | 349 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
350 | { |
351 | int rc = -ENODEV; | |
352 | struct slot *pslot; | |
353 | u8 present; | |
354 | struct slot myslot; | |
355 | ||
356 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
357 | (ulong) hotplug_slot, (ulong) value); | |
358 | ibmphp_lock_operations(); | |
9df7fde5 | 359 | if (hotplug_slot) { |
1da177e4 LT |
360 | pslot = hotplug_slot->private; |
361 | if (pslot) { | |
362 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
363 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
364 | &(myslot.status)); | |
365 | if (!rc) { | |
366 | present = SLOT_PRESENT(myslot.status); | |
367 | if (present == HPC_SLOT_EMPTY) | |
368 | *value = 0; | |
369 | else | |
370 | *value = 1; | |
371 | } | |
372 | } | |
373 | } | |
374 | ||
375 | ibmphp_unlock_operations(); | |
376 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
377 | return rc; | |
378 | } | |
379 | ||
3749c51a | 380 | static int get_max_bus_speed(struct slot *slot) |
1da177e4 | 381 | { |
4051f5eb | 382 | int rc = 0; |
1da177e4 | 383 | u8 mode = 0; |
3749c51a MW |
384 | enum pci_bus_speed speed; |
385 | struct pci_bus *bus = slot->hotplug_slot->pci_slot->bus; | |
1da177e4 | 386 | |
3749c51a | 387 | debug("%s - Entry slot[%p]\n", __func__, slot); |
1da177e4 LT |
388 | |
389 | ibmphp_lock_operations(); | |
3749c51a | 390 | mode = slot->supported_bus_mode; |
f7625980 | 391 | speed = slot->supported_speed; |
1da177e4 | 392 | ibmphp_unlock_operations(); |
1da177e4 | 393 | |
3749c51a MW |
394 | switch (speed) { |
395 | case BUS_SPEED_33: | |
396 | break; | |
397 | case BUS_SPEED_66: | |
f7625980 | 398 | if (mode == BUS_MODE_PCIX) |
3749c51a MW |
399 | speed += 0x01; |
400 | break; | |
401 | case BUS_SPEED_100: | |
402 | case BUS_SPEED_133: | |
403 | speed += 0x01; | |
404 | break; | |
405 | default: | |
406 | /* Note (will need to change): there would be soon 256, 512 also */ | |
407 | rc = -ENODEV; | |
1da177e4 LT |
408 | } |
409 | ||
3749c51a MW |
410 | if (!rc) |
411 | bus->max_bus_speed = speed; | |
412 | ||
413 | debug("%s - Exit rc[%d] speed[%x]\n", __func__, rc, speed); | |
1da177e4 LT |
414 | return rc; |
415 | } | |
416 | ||
417 | /* | |
3c78bc61 | 418 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 *value, u8 flag) |
1da177e4 LT |
419 | { |
420 | int rc = -ENODEV; | |
421 | struct slot *pslot; | |
422 | struct slot myslot; | |
423 | ||
424 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
425 | (ulong)hotplug_slot, (ulong) value); | |
426 | ||
427 | if (flag) | |
428 | ibmphp_lock_operations(); | |
429 | ||
430 | if (hotplug_slot && value) { | |
431 | pslot = hotplug_slot->private; | |
432 | if (pslot) { | |
433 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
434 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
435 | &(myslot.status)); | |
436 | ||
437 | if (!(SLOT_LATCH (myslot.status)) && | |
438 | (SLOT_PRESENT (myslot.status))) { | |
439 | rc = ibmphp_hpc_readslot(pslot, | |
440 | READ_EXTSLOTSTATUS, | |
441 | &(myslot.ext_status)); | |
442 | if (!rc) | |
443 | *value = SLOT_SPEED(myslot.ext_status); | |
444 | } else | |
445 | *value = MAX_ADAPTER_NONE; | |
ff3ce480 | 446 | } |
1da177e4 LT |
447 | } |
448 | ||
449 | if (flag) | |
450 | ibmphp_unlock_operations(); | |
451 | ||
452 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
453 | return rc; | |
454 | } | |
455 | ||
3c78bc61 | 456 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char *value) |
1da177e4 LT |
457 | { |
458 | int rc = -ENODEV; | |
459 | struct slot *pslot = NULL; | |
460 | ||
461 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
462 | ||
463 | ibmphp_lock_operations(); | |
464 | ||
465 | if (hotplug_slot) { | |
466 | pslot = hotplug_slot->private; | |
467 | if (pslot) { | |
468 | rc = 0; | |
469 | snprintf(value, 100, "Bus %x", pslot->bus); | |
470 | } | |
471 | } else | |
472 | rc = -ENODEV; | |
473 | ||
474 | ibmphp_unlock_operations(); | |
475 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
476 | return rc; | |
477 | } | |
478 | */ | |
479 | ||
480 | /**************************************************************************** | |
481 | * This routine will initialize the ops data structure used in the validate | |
482 | * function. It will also power off empty slots that are powered on since BIOS | |
483 | * leaves those on, albeit disconnected | |
484 | ****************************************************************************/ | |
485 | static int __init init_ops(void) | |
486 | { | |
487 | struct slot *slot_cur; | |
1da177e4 LT |
488 | int retval; |
489 | int rc; | |
490 | ||
2ac83ccc | 491 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
492 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", |
493 | slot_cur->number); | |
f7625980 | 494 | if (slot_cur->ctrl->revision == 0xFF) |
1da177e4 LT |
495 | if (get_ctrl_revision(slot_cur, |
496 | &slot_cur->ctrl->revision)) | |
497 | return -1; | |
498 | ||
f7625980 BH |
499 | if (slot_cur->bus_on->current_speed == 0xFF) |
500 | if (get_cur_bus_info(&slot_cur)) | |
1da177e4 | 501 | return -1; |
3749c51a | 502 | get_max_bus_speed(slot_cur); |
1da177e4 LT |
503 | |
504 | if (slot_cur->ctrl->options == 0xFF) | |
505 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
506 | return -1; | |
507 | ||
508 | retval = slot_update(&slot_cur); | |
509 | if (retval) | |
510 | return retval; | |
511 | ||
512 | debug("status = %x\n", slot_cur->status); | |
513 | debug("ext_status = %x\n", slot_cur->ext_status); | |
514 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
515 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
516 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
517 | ||
f7625980 BH |
518 | if ((SLOT_PWRGD(slot_cur->status)) && |
519 | !(SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
520 | !(SLOT_LATCH(slot_cur->status))) { |
521 | debug("BEFORE POWER OFF COMMAND\n"); | |
522 | rc = power_off(slot_cur); | |
523 | if (rc) | |
524 | return rc; | |
525 | ||
526 | /* retval = slot_update(&slot_cur); | |
527 | * if (retval) | |
528 | * return retval; | |
529 | * ibmphp_update_slot_info(slot_cur); | |
530 | */ | |
531 | } | |
532 | } | |
533 | init_flag = 0; | |
534 | return 0; | |
535 | } | |
536 | ||
537 | /* This operation will check whether the slot is within the bounds and | |
538 | * the operation is valid to perform on that slot | |
539 | * Parameters: slot, operation | |
540 | * Returns: 0 or error codes | |
541 | */ | |
542 | static int validate(struct slot *slot_cur, int opn) | |
543 | { | |
544 | int number; | |
545 | int retval; | |
546 | ||
547 | if (!slot_cur) | |
548 | return -ENODEV; | |
549 | number = slot_cur->number; | |
550 | if ((number > max_slots) || (number < 0)) | |
551 | return -EBADSLT; | |
552 | debug("slot_number in validate is %d\n", slot_cur->number); | |
553 | ||
554 | retval = slot_update(&slot_cur); | |
555 | if (retval) | |
556 | return retval; | |
557 | ||
558 | switch (opn) { | |
559 | case ENABLE: | |
f7625980 BH |
560 | if (!(SLOT_PWRGD(slot_cur->status)) && |
561 | (SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
562 | !(SLOT_LATCH(slot_cur->status))) |
563 | return 0; | |
564 | break; | |
565 | case DISABLE: | |
f7625980 | 566 | if ((SLOT_PWRGD(slot_cur->status)) && |
1da177e4 LT |
567 | (SLOT_PRESENT(slot_cur->status)) && |
568 | !(SLOT_LATCH(slot_cur->status))) | |
569 | return 0; | |
570 | break; | |
571 | default: | |
572 | break; | |
573 | } | |
574 | err("validate failed....\n"); | |
575 | return -EINVAL; | |
576 | } | |
577 | ||
578 | /**************************************************************************** | |
579 | * This routine is for updating the data structures in the hotplug core | |
580 | * Parameters: struct slot | |
581 | * Returns: 0 or error | |
582 | ****************************************************************************/ | |
583 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
584 | { | |
585 | struct hotplug_slot_info *info; | |
3749c51a | 586 | struct pci_bus *bus = slot_cur->hotplug_slot->pci_slot->bus; |
1da177e4 LT |
587 | int rc; |
588 | u8 bus_speed; | |
589 | u8 mode; | |
590 | ||
591 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); | |
c7abb235 | 592 | if (!info) |
1da177e4 | 593 | return -ENOMEM; |
f7625980 | 594 | |
1da177e4 LT |
595 | info->power_status = SLOT_PWRGD(slot_cur->status); |
596 | info->attention_status = SLOT_ATTN(slot_cur->status, | |
597 | slot_cur->ext_status); | |
598 | info->latch_status = SLOT_LATCH(slot_cur->status); | |
ff3ce480 BS |
599 | if (!SLOT_PRESENT(slot_cur->status)) { |
600 | info->adapter_status = 0; | |
1da177e4 LT |
601 | /* info->max_adapter_speed_status = MAX_ADAPTER_NONE; */ |
602 | } else { | |
ff3ce480 | 603 | info->adapter_status = 1; |
1da177e4 LT |
604 | /* get_max_adapter_speed_1(slot_cur->hotplug_slot, |
605 | &info->max_adapter_speed_status, 0); */ | |
606 | } | |
607 | ||
608 | bus_speed = slot_cur->bus_on->current_speed; | |
609 | mode = slot_cur->bus_on->current_bus_mode; | |
610 | ||
611 | switch (bus_speed) { | |
612 | case BUS_SPEED_33: | |
613 | break; | |
614 | case BUS_SPEED_66: | |
f7625980 | 615 | if (mode == BUS_MODE_PCIX) |
1da177e4 LT |
616 | bus_speed += 0x01; |
617 | else if (mode == BUS_MODE_PCI) | |
618 | ; | |
619 | else | |
620 | bus_speed = PCI_SPEED_UNKNOWN; | |
621 | break; | |
622 | case BUS_SPEED_100: | |
623 | case BUS_SPEED_133: | |
624 | bus_speed += 0x01; | |
625 | break; | |
626 | default: | |
627 | bus_speed = PCI_SPEED_UNKNOWN; | |
628 | } | |
629 | ||
3749c51a | 630 | bus->cur_bus_speed = bus_speed; |
f7625980 BH |
631 | // To do: bus_names |
632 | ||
1da177e4 LT |
633 | rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, info); |
634 | kfree(info); | |
635 | return rc; | |
636 | } | |
637 | ||
638 | ||
639 | /****************************************************************************** | |
640 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
641 | * is called from visit routines | |
642 | ******************************************************************************/ | |
643 | ||
644 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
645 | { | |
646 | struct pci_func *func_cur; | |
647 | struct slot *slot_cur; | |
2ac83ccc | 648 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
649 | if (slot_cur->func) { |
650 | func_cur = slot_cur->func; | |
651 | while (func_cur) { | |
652 | if ((func_cur->busno == busno) && | |
653 | (func_cur->device == device) && | |
654 | (func_cur->function == function)) | |
655 | return func_cur; | |
656 | func_cur = func_cur->next; | |
657 | } | |
658 | } | |
659 | } | |
660 | return NULL; | |
661 | } | |
662 | ||
663 | /************************************************************* | |
664 | * This routine frees up memory used by struct slot, including | |
665 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
666 | * and deregistering from the hotplug core | |
667 | *************************************************************/ | |
668 | static void free_slots(void) | |
669 | { | |
2ac83ccc | 670 | struct slot *slot_cur, *next; |
1da177e4 | 671 | |
66bef8c0 | 672 | debug("%s -- enter\n", __func__); |
1da177e4 | 673 | |
2ac83ccc GT |
674 | list_for_each_entry_safe(slot_cur, next, &ibmphp_slot_head, |
675 | ibm_slot_list) { | |
1da177e4 LT |
676 | pci_hp_deregister(slot_cur->hotplug_slot); |
677 | } | |
66bef8c0 | 678 | debug("%s -- exit\n", __func__); |
1da177e4 LT |
679 | } |
680 | ||
681 | static void ibm_unconfigure_device(struct pci_func *func) | |
682 | { | |
683 | struct pci_dev *temp; | |
684 | u8 j; | |
685 | ||
66bef8c0 | 686 | debug("inside %s\n", __func__); |
1da177e4 LT |
687 | debug("func->device = %x, func->function = %x\n", |
688 | func->device, func->function); | |
689 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
690 | ||
c4ec84c7 RW |
691 | pci_lock_rescan_remove(); |
692 | ||
1da177e4 | 693 | for (j = 0; j < 0x08; j++) { |
48ec0535 SK |
694 | temp = pci_get_domain_bus_and_slot(0, func->busno, |
695 | (func->device << 3) | j); | |
f362b8bf | 696 | if (temp) { |
210647af | 697 | pci_stop_and_remove_bus_device(temp); |
f362b8bf JP |
698 | pci_dev_put(temp); |
699 | } | |
1da177e4 | 700 | } |
c4ec84c7 | 701 | |
f362b8bf | 702 | pci_dev_put(func->dev); |
c4ec84c7 RW |
703 | |
704 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
705 | } |
706 | ||
707 | /* | |
f7625980 BH |
708 | * The following function is to fix kernel bug regarding |
709 | * getting bus entries, here we manually add those primary | |
1da177e4 LT |
710 | * bus entries to kernel bus structure whenever apply |
711 | */ | |
712 | static u8 bus_structure_fixup(u8 busno) | |
713 | { | |
c90570d9 | 714 | struct pci_bus *bus, *b; |
1da177e4 LT |
715 | struct pci_dev *dev; |
716 | u16 l; | |
717 | ||
718 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
719 | return 1; | |
720 | ||
721 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
c7abb235 | 722 | if (!bus) |
1da177e4 | 723 | return 1; |
c7abb235 | 724 | |
1da177e4 LT |
725 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); |
726 | if (!dev) { | |
727 | kfree(bus); | |
1da177e4 LT |
728 | return 1; |
729 | } | |
730 | ||
731 | bus->number = busno; | |
732 | bus->ops = ibmphp_pci_bus->ops; | |
733 | dev->bus = bus; | |
734 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
735 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
736 | (l != 0x0000) && (l != 0xffff)) { | |
367fa982 | 737 | debug("%s - Inside bus_structure_fixup()\n", |
66bef8c0 | 738 | __func__); |
c90570d9 YW |
739 | b = pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); |
740 | if (!b) | |
741 | continue; | |
742 | ||
743 | pci_bus_add_devices(b); | |
1da177e4 LT |
744 | break; |
745 | } | |
746 | } | |
747 | ||
748 | kfree(dev); | |
749 | kfree(bus); | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
754 | static int ibm_configure_device(struct pci_func *func) | |
755 | { | |
1da177e4 LT |
756 | struct pci_bus *child; |
757 | int num; | |
758 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
759 | for bridged devices primarily */ | |
760 | ||
c4ec84c7 RW |
761 | pci_lock_rescan_remove(); |
762 | ||
1da177e4 LT |
763 | if (!(bus_structure_fixup(func->busno))) |
764 | flag = 1; | |
765 | if (func->dev == NULL) | |
48ec0535 | 766 | func->dev = pci_get_domain_bus_and_slot(0, func->busno, |
1da177e4 LT |
767 | PCI_DEVFN(func->device, func->function)); |
768 | ||
769 | if (func->dev == NULL) { | |
770 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
771 | if (!bus) | |
c4ec84c7 | 772 | goto out; |
1da177e4 LT |
773 | |
774 | num = pci_scan_slot(bus, | |
775 | PCI_DEVFN(func->device, func->function)); | |
776 | if (num) | |
777 | pci_bus_add_devices(bus); | |
778 | ||
48ec0535 | 779 | func->dev = pci_get_domain_bus_and_slot(0, func->busno, |
1da177e4 LT |
780 | PCI_DEVFN(func->device, func->function)); |
781 | if (func->dev == NULL) { | |
782 | err("ERROR... : pci_dev still NULL\n"); | |
c4ec84c7 | 783 | goto out; |
1da177e4 LT |
784 | } |
785 | } | |
786 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
2d7abf32 YL |
787 | pci_hp_add_bridge(func->dev); |
788 | child = func->dev->subordinate; | |
789 | if (child) | |
790 | pci_bus_add_devices(child); | |
1da177e4 LT |
791 | } |
792 | ||
c4ec84c7 RW |
793 | out: |
794 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
795 | return 0; |
796 | } | |
797 | ||
798 | /******************************************************* | |
f7625980 | 799 | * Returns whether the bus is empty or not |
1da177e4 | 800 | *******************************************************/ |
3c78bc61 | 801 | static int is_bus_empty(struct slot *slot_cur) |
1da177e4 LT |
802 | { |
803 | int rc; | |
3c78bc61 | 804 | struct slot *tmp_slot; |
1da177e4 LT |
805 | u8 i = slot_cur->bus_on->slot_min; |
806 | ||
807 | while (i <= slot_cur->bus_on->slot_max) { | |
808 | if (i == slot_cur->number) { | |
809 | i++; | |
810 | continue; | |
811 | } | |
812 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
813 | if (!tmp_slot) | |
814 | return 0; | |
815 | rc = slot_update(&tmp_slot); | |
816 | if (rc) | |
817 | return 0; | |
818 | if (SLOT_PRESENT(tmp_slot->status) && | |
819 | SLOT_PWRGD(tmp_slot->status)) | |
820 | return 0; | |
821 | i++; | |
822 | } | |
823 | return 1; | |
824 | } | |
825 | ||
826 | /*********************************************************** | |
f7625980 | 827 | * If the HPC permits and the bus currently empty, tries to set the |
1da177e4 LT |
828 | * bus speed and mode at the maximum card and bus capability |
829 | * Parameters: slot | |
830 | * Returns: bus is set (0) or error code | |
831 | ***********************************************************/ | |
3c78bc61 | 832 | static int set_bus(struct slot *slot_cur) |
1da177e4 LT |
833 | { |
834 | int rc; | |
835 | u8 speed; | |
836 | u8 cmd = 0x0; | |
837 | int retval; | |
8394264d | 838 | static const struct pci_device_id ciobx[] = { |
1da177e4 | 839 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, |
ff3ce480 | 840 | { }, |
f7625980 | 841 | }; |
1da177e4 | 842 | |
66bef8c0 | 843 | debug("%s - entry slot # %d\n", __func__, slot_cur->number); |
1da177e4 LT |
844 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { |
845 | rc = slot_update(&slot_cur); | |
846 | if (rc) | |
847 | return rc; | |
848 | speed = SLOT_SPEED(slot_cur->ext_status); | |
849 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
850 | switch (speed) { | |
851 | case HPC_SLOT_SPEED_33: | |
852 | cmd = HPC_BUS_33CONVMODE; | |
853 | break; | |
854 | case HPC_SLOT_SPEED_66: | |
855 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
856 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
857 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
858 | cmd = HPC_BUS_66PCIXMODE; | |
859 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
860 | /* if max slot/bus capability is 66 pci | |
861 | and there's no bus mode mismatch, then | |
f7625980 | 862 | the adapter supports 66 pci */ |
1da177e4 LT |
863 | cmd = HPC_BUS_66CONVMODE; |
864 | else | |
865 | cmd = HPC_BUS_33CONVMODE; | |
866 | } else { | |
867 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
868 | cmd = HPC_BUS_66CONVMODE; | |
869 | else | |
870 | cmd = HPC_BUS_33CONVMODE; | |
871 | } | |
872 | break; | |
873 | case HPC_SLOT_SPEED_133: | |
874 | switch (slot_cur->supported_speed) { | |
875 | case BUS_SPEED_33: | |
876 | cmd = HPC_BUS_33CONVMODE; | |
877 | break; | |
878 | case BUS_SPEED_66: | |
879 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
880 | cmd = HPC_BUS_66PCIXMODE; | |
881 | else | |
882 | cmd = HPC_BUS_66CONVMODE; | |
883 | break; | |
884 | case BUS_SPEED_100: | |
885 | cmd = HPC_BUS_100PCIXMODE; | |
886 | break; | |
887 | case BUS_SPEED_133: | |
888 | /* This is to take care of the bug in CIOBX chip */ | |
889 | if (pci_dev_present(ciobx)) | |
890 | ibmphp_hpc_writeslot(slot_cur, | |
891 | HPC_BUS_100PCIXMODE); | |
892 | cmd = HPC_BUS_133PCIXMODE; | |
893 | break; | |
894 | default: | |
895 | err("Wrong bus speed\n"); | |
896 | return -ENODEV; | |
897 | } | |
898 | break; | |
899 | default: | |
900 | err("wrong slot speed\n"); | |
901 | return -ENODEV; | |
902 | } | |
903 | debug("setting bus speed for slot %d, cmd %x\n", | |
904 | slot_cur->number, cmd); | |
905 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
906 | if (retval) { | |
907 | err("setting bus speed failed\n"); | |
908 | return retval; | |
909 | } | |
910 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
911 | err("command not completed successfully in set_bus\n"); | |
912 | return -EIO; | |
913 | } | |
914 | } | |
f7625980 | 915 | /* This is for x440, once Brandon fixes the firmware, |
1da177e4 LT |
916 | will not need this delay */ |
917 | msleep(1000); | |
66bef8c0 | 918 | debug("%s -Exit\n", __func__); |
1da177e4 LT |
919 | return 0; |
920 | } | |
921 | ||
922 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
f7625980 | 923 | * This is used in deciding whether or not to power up the slot. |
1da177e4 | 924 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on |
f7625980 | 925 | * same bus) |
1da177e4 LT |
926 | * Parameters: slot |
927 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
928 | */ | |
929 | static int check_limitations(struct slot *slot_cur) | |
930 | { | |
931 | u8 i; | |
3c78bc61 | 932 | struct slot *tmp_slot; |
1da177e4 LT |
933 | u8 count = 0; |
934 | u8 limitation = 0; | |
935 | ||
936 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
937 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
938 | if (!tmp_slot) | |
939 | return -ENODEV; | |
940 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
941 | !(SLOT_CONNECT(tmp_slot->status))) | |
942 | count++; | |
943 | } | |
944 | get_cur_bus_info(&slot_cur); | |
945 | switch (slot_cur->bus_on->current_speed) { | |
946 | case BUS_SPEED_33: | |
947 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
948 | break; | |
949 | case BUS_SPEED_66: | |
950 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
951 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
952 | else | |
953 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
954 | break; | |
955 | case BUS_SPEED_100: | |
956 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
957 | break; | |
958 | case BUS_SPEED_133: | |
959 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
960 | break; | |
961 | } | |
962 | ||
963 | if ((count + 1) > limitation) | |
964 | return -EINVAL; | |
965 | return 0; | |
966 | } | |
967 | ||
968 | static inline void print_card_capability(struct slot *slot_cur) | |
969 | { | |
970 | info("capability of the card is "); | |
f7625980 | 971 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) |
1da177e4 LT |
972 | info(" 133 MHz PCI-X\n"); |
973 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
974 | info(" 66 MHz PCI-X\n"); | |
975 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
976 | info(" 66 MHz PCI\n"); | |
977 | else | |
978 | info(" 33 MHz PCI\n"); | |
979 | ||
980 | } | |
981 | ||
982 | /* This routine will power on the slot, configure the device(s) and find the | |
983 | * drivers for them. | |
984 | * Parameters: hotplug_slot | |
985 | * Returns: 0 or failure codes | |
986 | */ | |
987 | static int enable_slot(struct hotplug_slot *hs) | |
988 | { | |
989 | int rc, i, rcpr; | |
990 | struct slot *slot_cur; | |
991 | u8 function; | |
992 | struct pci_func *tmp_func; | |
993 | ||
994 | ibmphp_lock_operations(); | |
995 | ||
996 | debug("ENABLING SLOT........\n"); | |
997 | slot_cur = hs->private; | |
998 | ||
79e50e72 QL |
999 | rc = validate(slot_cur, ENABLE); |
1000 | if (rc) { | |
1da177e4 LT |
1001 | err("validate function failed\n"); |
1002 | goto error_nopower; | |
1003 | } | |
1004 | ||
1005 | attn_LED_blink(slot_cur); | |
f7625980 | 1006 | |
1da177e4 LT |
1007 | rc = set_bus(slot_cur); |
1008 | if (rc) { | |
1009 | err("was not able to set the bus\n"); | |
1010 | goto error_nopower; | |
1011 | } | |
1012 | ||
1013 | /*-----------------debugging------------------------------*/ | |
1014 | get_cur_bus_info(&slot_cur); | |
1015 | debug("the current bus speed right after set_bus = %x\n", | |
1016 | slot_cur->bus_on->current_speed); | |
1017 | /*----------------------------------------------------------*/ | |
1018 | ||
1019 | rc = check_limitations(slot_cur); | |
1020 | if (rc) { | |
1021 | err("Adding this card exceeds the limitations of this bus.\n"); | |
227f0647 | 1022 | err("(i.e., >1 133MHz cards running on same bus, or >2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1023 | err("Try hot-adding into another bus\n"); |
1024 | rc = -EINVAL; | |
1025 | goto error_nopower; | |
1026 | } | |
1027 | ||
1028 | rc = power_on(slot_cur); | |
1029 | ||
1030 | if (rc) { | |
1031 | err("something wrong when powering up... please see below for details\n"); | |
1032 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1033 | attn_off(slot_cur); | |
1034 | attn_on(slot_cur); | |
1035 | if (slot_update(&slot_cur)) { | |
1036 | attn_off(slot_cur); | |
1037 | attn_on(slot_cur); | |
1038 | rc = -ENODEV; | |
1039 | goto exit; | |
1040 | } | |
1041 | /* Check to see the error of why it failed */ | |
1042 | if ((SLOT_POWER(slot_cur->status)) && | |
1043 | !(SLOT_PWRGD(slot_cur->status))) | |
1044 | err("power fault occurred trying to power up\n"); | |
1045 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
227f0647 | 1046 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1047 | print_card_capability(slot_cur); |
1048 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
227f0647 | 1049 | err("bus mode mismatch occurred. please check current bus mode and card capability\n"); |
1da177e4 LT |
1050 | print_card_capability(slot_cur); |
1051 | } | |
1052 | ibmphp_update_slot_info(slot_cur); | |
1053 | goto exit; | |
1054 | } | |
1055 | debug("after power_on\n"); | |
1056 | /*-----------------------debugging---------------------------*/ | |
1057 | get_cur_bus_info(&slot_cur); | |
1058 | debug("the current bus speed right after power_on = %x\n", | |
1059 | slot_cur->bus_on->current_speed); | |
1060 | /*----------------------------------------------------------*/ | |
1061 | ||
1062 | rc = slot_update(&slot_cur); | |
1063 | if (rc) | |
1064 | goto error_power; | |
f7625980 | 1065 | |
1da177e4 LT |
1066 | rc = -EINVAL; |
1067 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1068 | err("power fault occurred trying to power up...\n"); | |
1069 | goto error_power; | |
1070 | } | |
1071 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
227f0647 | 1072 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1073 | print_card_capability(slot_cur); |
1074 | goto error_power; | |
f7625980 | 1075 | } |
1da177e4 LT |
1076 | /* Don't think this case will happen after above checks... |
1077 | * but just in case, for paranoia sake */ | |
1078 | if (!(SLOT_POWER(slot_cur->status))) { | |
1079 | err("power on failed...\n"); | |
1080 | goto error_power; | |
1081 | } | |
1082 | ||
f5afe806 | 1083 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 LT |
1084 | if (!slot_cur->func) { |
1085 | /* We cannot do update_slot_info here, since no memory for | |
1086 | * kmalloc n.e.ways, and update_slot_info allocates some */ | |
1da177e4 LT |
1087 | rc = -ENOMEM; |
1088 | goto error_power; | |
1089 | } | |
1da177e4 LT |
1090 | slot_cur->func->busno = slot_cur->bus; |
1091 | slot_cur->func->device = slot_cur->device; | |
1092 | for (i = 0; i < 4; i++) | |
1093 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1094 | ||
1095 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1096 | slot_cur->bus, slot_cur->device); | |
1097 | ||
1098 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1099 | err("configure_card was unsuccessful...\n"); | |
1100 | /* true because don't need to actually deallocate resources, | |
1101 | * just remove references */ | |
1102 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1103 | debug("after unconfigure_card\n"); | |
1104 | slot_cur->func = NULL; | |
1105 | rc = -ENOMEM; | |
1106 | goto error_power; | |
1107 | } | |
1108 | ||
1109 | function = 0x00; | |
1110 | do { | |
1111 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1112 | function++); | |
1113 | if (tmp_func && !(tmp_func->dev)) | |
1114 | ibm_configure_device(tmp_func); | |
1115 | } while (tmp_func); | |
1116 | ||
1117 | attn_off(slot_cur); | |
1118 | if (slot_update(&slot_cur)) { | |
1119 | rc = -EFAULT; | |
1120 | goto exit; | |
1121 | } | |
1122 | ibmphp_print_test(); | |
1123 | rc = ibmphp_update_slot_info(slot_cur); | |
1124 | exit: | |
f7625980 | 1125 | ibmphp_unlock_operations(); |
1da177e4 LT |
1126 | return rc; |
1127 | ||
1128 | error_nopower: | |
1129 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1130 | attn_on(slot_cur); | |
1131 | error_cont: | |
1132 | rcpr = slot_update(&slot_cur); | |
1133 | if (rcpr) { | |
1134 | rc = rcpr; | |
1135 | goto exit; | |
1136 | } | |
1137 | ibmphp_update_slot_info(slot_cur); | |
1138 | goto exit; | |
1139 | ||
1140 | error_power: | |
1141 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1142 | attn_on(slot_cur); | |
1143 | rcpr = power_off(slot_cur); | |
1144 | if (rcpr) { | |
1145 | rc = rcpr; | |
1146 | goto exit; | |
1147 | } | |
1148 | goto error_cont; | |
1149 | } | |
1150 | ||
1151 | /************************************************************** | |
1152 | * HOT REMOVING ADAPTER CARD * | |
1153 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1154 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
ff3ce480 | 1155 | * DISABLE POWER , * |
1da177e4 LT |
1156 | **************************************************************/ |
1157 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1158 | { | |
1159 | struct slot *slot = hotplug_slot->private; | |
1160 | int rc; | |
f7625980 | 1161 | |
1da177e4 LT |
1162 | ibmphp_lock_operations(); |
1163 | rc = ibmphp_do_disable_slot(slot); | |
1164 | ibmphp_unlock_operations(); | |
1165 | return rc; | |
1166 | } | |
1167 | ||
1168 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1169 | { | |
1170 | int rc; | |
1171 | u8 flag; | |
1172 | ||
f7625980 BH |
1173 | debug("DISABLING SLOT...\n"); |
1174 | ||
656f978f | 1175 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) |
1da177e4 | 1176 | return -ENODEV; |
f7625980 | 1177 | |
1da177e4 | 1178 | flag = slot_cur->flag; |
dc6712d1 | 1179 | slot_cur->flag = 1; |
1da177e4 | 1180 | |
dc6712d1 | 1181 | if (flag == 1) { |
1da177e4 LT |
1182 | rc = validate(slot_cur, DISABLE); |
1183 | /* checking if powered off already & valid slot # */ | |
1184 | if (rc) | |
1185 | goto error; | |
1186 | } | |
1187 | attn_LED_blink(slot_cur); | |
1188 | ||
1189 | if (slot_cur->func == NULL) { | |
f7625980 | 1190 | /* We need this for functions that were there on bootup */ |
f5afe806 | 1191 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 | 1192 | if (!slot_cur->func) { |
1da177e4 LT |
1193 | rc = -ENOMEM; |
1194 | goto error; | |
1195 | } | |
1da177e4 LT |
1196 | slot_cur->func->busno = slot_cur->bus; |
1197 | slot_cur->func->device = slot_cur->device; | |
1198 | } | |
1199 | ||
1200 | ibm_unconfigure_device(slot_cur->func); | |
f7625980 BH |
1201 | |
1202 | /* | |
1203 | * If we got here from latch suddenly opening on operating card or | |
1204 | * a power fault, there's no power to the card, so cannot | |
1205 | * read from it to determine what resources it occupied. This operation | |
1206 | * is forbidden anyhow. The best we can do is remove it from kernel | |
1207 | * lists at least */ | |
1da177e4 LT |
1208 | |
1209 | if (!flag) { | |
1210 | attn_off(slot_cur); | |
1211 | return 0; | |
1212 | } | |
1213 | ||
1214 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1215 | slot_cur->func = NULL; | |
1216 | debug("in disable_slot. after unconfigure_card\n"); | |
1217 | if (rc) { | |
1218 | err("could not unconfigure card.\n"); | |
1219 | goto error; | |
1220 | } | |
1221 | ||
1222 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1223 | if (rc) | |
1224 | goto error; | |
1225 | ||
1226 | attn_off(slot_cur); | |
1227 | rc = slot_update(&slot_cur); | |
1228 | if (rc) | |
1229 | goto exit; | |
1230 | ||
1231 | rc = ibmphp_update_slot_info(slot_cur); | |
1232 | ibmphp_print_test(); | |
1233 | exit: | |
1234 | return rc; | |
1235 | ||
1236 | error: | |
1237 | /* Need to turn off if was blinking b4 */ | |
1238 | attn_off(slot_cur); | |
1239 | attn_on(slot_cur); | |
1240 | if (slot_update(&slot_cur)) { | |
1241 | rc = -EFAULT; | |
1242 | goto exit; | |
1243 | } | |
f7625980 | 1244 | if (flag) |
1da177e4 LT |
1245 | ibmphp_update_slot_info(slot_cur); |
1246 | goto exit; | |
1247 | } | |
1248 | ||
1249 | struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { | |
1da177e4 LT |
1250 | .set_attention_status = set_attention_status, |
1251 | .enable_slot = enable_slot, | |
1252 | .disable_slot = ibmphp_disable_slot, | |
1253 | .hardware_test = NULL, | |
1254 | .get_power_status = get_power_status, | |
1255 | .get_attention_status = get_attention_status, | |
1256 | .get_latch_status = get_latch_status, | |
1257 | .get_adapter_status = get_adapter_present, | |
1da177e4 LT |
1258 | /* .get_max_adapter_speed = get_max_adapter_speed, |
1259 | .get_bus_name_status = get_bus_name, | |
1260 | */ | |
1261 | }; | |
1262 | ||
1263 | static void ibmphp_unload(void) | |
1264 | { | |
1265 | free_slots(); | |
1266 | debug("after slots\n"); | |
1267 | ibmphp_free_resources(); | |
1268 | debug("after resources\n"); | |
1269 | ibmphp_free_bus_info_queue(); | |
1270 | debug("after bus info\n"); | |
1271 | ibmphp_free_ebda_hpc_queue(); | |
1272 | debug("after ebda hpc\n"); | |
1273 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1274 | debug("after ebda pci rsrc\n"); | |
1275 | kfree(ibmphp_pci_bus); | |
1276 | } | |
1277 | ||
1278 | static int __init ibmphp_init(void) | |
1279 | { | |
1280 | struct pci_bus *bus; | |
1281 | int i = 0; | |
1282 | int rc = 0; | |
1283 | ||
1284 | init_flag = 1; | |
1285 | ||
1286 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1287 | ||
1288 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1289 | if (!ibmphp_pci_bus) { | |
1da177e4 LT |
1290 | rc = -ENOMEM; |
1291 | goto exit; | |
1292 | } | |
1293 | ||
1294 | bus = pci_find_bus(0, 0); | |
1295 | if (!bus) { | |
1296 | err("Can't find the root pci bus, can not continue\n"); | |
1297 | rc = -ENODEV; | |
1298 | goto error; | |
1299 | } | |
1300 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1301 | ||
1302 | ibmphp_debug = debug; | |
1303 | ||
1304 | ibmphp_hpc_initvars(); | |
1305 | ||
1306 | for (i = 0; i < 16; i++) | |
1307 | irqs[i] = 0; | |
1308 | ||
79e50e72 QL |
1309 | rc = ibmphp_access_ebda(); |
1310 | if (rc) | |
1da177e4 LT |
1311 | goto error; |
1312 | debug("after ibmphp_access_ebda()\n"); | |
1313 | ||
79e50e72 QL |
1314 | rc = ibmphp_rsrc_init(); |
1315 | if (rc) | |
1da177e4 LT |
1316 | goto error; |
1317 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1318 | ||
1319 | max_slots = get_max_slots(); | |
f7625980 | 1320 | |
79e50e72 QL |
1321 | rc = ibmphp_register_pci(); |
1322 | if (rc) | |
1da177e4 LT |
1323 | goto error; |
1324 | ||
1325 | if (init_ops()) { | |
1326 | rc = -ENODEV; | |
1327 | goto error; | |
1328 | } | |
1329 | ||
1330 | ibmphp_print_test(); | |
79e50e72 QL |
1331 | rc = ibmphp_hpc_start_poll_thread(); |
1332 | if (rc) | |
1da177e4 | 1333 | goto error; |
1da177e4 | 1334 | |
1da177e4 LT |
1335 | exit: |
1336 | return rc; | |
1337 | ||
1338 | error: | |
1339 | ibmphp_unload(); | |
1340 | goto exit; | |
1341 | } | |
1342 | ||
1343 | static void __exit ibmphp_exit(void) | |
1344 | { | |
1345 | ibmphp_hpc_stop_poll_thread(); | |
1346 | debug("after polling\n"); | |
1347 | ibmphp_unload(); | |
1348 | debug("done\n"); | |
1349 | } | |
1350 | ||
1351 | module_init(ibmphp_init); | |
64f039d3 | 1352 | module_exit(ibmphp_exit); |