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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) { | |
125450f8 LW |
250 | pslot = to_slot(hotplug_slot); |
251 | rc = ibmphp_hpc_writeslot(pslot, cmd); | |
1da177e4 | 252 | } |
f7625980 | 253 | } else |
1da177e4 LT |
254 | rc = -ENODEV; |
255 | ||
256 | ibmphp_unlock_operations(); | |
257 | ||
258 | debug("set_attention_status - Exit rc[%d]\n", rc); | |
259 | return rc; | |
260 | } | |
261 | ||
3c78bc61 | 262 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
263 | { |
264 | int rc = -ENODEV; | |
265 | struct slot *pslot; | |
266 | struct slot myslot; | |
267 | ||
268 | debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
269 | (ulong) hotplug_slot, (ulong) value); | |
f7625980 | 270 | |
1da177e4 | 271 | ibmphp_lock_operations(); |
9df7fde5 | 272 | if (hotplug_slot) { |
125450f8 LW |
273 | pslot = to_slot(hotplug_slot); |
274 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
275 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
276 | &myslot.status); | |
277 | if (!rc) | |
278 | rc = ibmphp_hpc_readslot(pslot, READ_EXTSLOTSTATUS, | |
279 | &myslot.ext_status); | |
280 | if (!rc) | |
281 | *value = SLOT_ATTN(myslot.status, myslot.ext_status); | |
1da177e4 LT |
282 | } |
283 | ||
284 | ibmphp_unlock_operations(); | |
285 | debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value); | |
286 | return rc; | |
287 | } | |
288 | ||
3c78bc61 | 289 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
290 | { |
291 | int rc = -ENODEV; | |
292 | struct slot *pslot; | |
293 | struct slot myslot; | |
294 | ||
295 | debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
296 | (ulong) hotplug_slot, (ulong) value); | |
297 | ibmphp_lock_operations(); | |
9df7fde5 | 298 | if (hotplug_slot) { |
125450f8 LW |
299 | pslot = to_slot(hotplug_slot); |
300 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
301 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
302 | &myslot.status); | |
303 | if (!rc) | |
304 | *value = SLOT_LATCH(myslot.status); | |
1da177e4 LT |
305 | } |
306 | ||
307 | ibmphp_unlock_operations(); | |
308 | debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n", | |
309 | rc, rc, *value); | |
310 | return rc; | |
311 | } | |
312 | ||
313 | ||
3c78bc61 | 314 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
315 | { |
316 | int rc = -ENODEV; | |
317 | struct slot *pslot; | |
318 | struct slot myslot; | |
319 | ||
320 | debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
321 | (ulong) hotplug_slot, (ulong) value); | |
322 | ibmphp_lock_operations(); | |
9df7fde5 | 323 | if (hotplug_slot) { |
125450f8 LW |
324 | pslot = to_slot(hotplug_slot); |
325 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
326 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
327 | &myslot.status); | |
328 | if (!rc) | |
329 | *value = SLOT_PWRGD(myslot.status); | |
1da177e4 LT |
330 | } |
331 | ||
332 | ibmphp_unlock_operations(); | |
333 | debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n", | |
334 | rc, rc, *value); | |
335 | return rc; | |
336 | } | |
337 | ||
3c78bc61 | 338 | static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 *value) |
1da177e4 LT |
339 | { |
340 | int rc = -ENODEV; | |
341 | struct slot *pslot; | |
342 | u8 present; | |
343 | struct slot myslot; | |
344 | ||
345 | debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
346 | (ulong) hotplug_slot, (ulong) value); | |
347 | ibmphp_lock_operations(); | |
9df7fde5 | 348 | if (hotplug_slot) { |
125450f8 LW |
349 | pslot = to_slot(hotplug_slot); |
350 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
351 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
352 | &myslot.status); | |
353 | if (!rc) { | |
354 | present = SLOT_PRESENT(myslot.status); | |
355 | if (present == HPC_SLOT_EMPTY) | |
356 | *value = 0; | |
357 | else | |
358 | *value = 1; | |
1da177e4 LT |
359 | } |
360 | } | |
361 | ||
362 | ibmphp_unlock_operations(); | |
363 | debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value); | |
364 | return rc; | |
365 | } | |
366 | ||
3749c51a | 367 | static int get_max_bus_speed(struct slot *slot) |
1da177e4 | 368 | { |
4051f5eb | 369 | int rc = 0; |
1da177e4 | 370 | u8 mode = 0; |
3749c51a | 371 | enum pci_bus_speed speed; |
125450f8 | 372 | struct pci_bus *bus = slot->hotplug_slot.pci_slot->bus; |
1da177e4 | 373 | |
3749c51a | 374 | debug("%s - Entry slot[%p]\n", __func__, slot); |
1da177e4 LT |
375 | |
376 | ibmphp_lock_operations(); | |
3749c51a | 377 | mode = slot->supported_bus_mode; |
f7625980 | 378 | speed = slot->supported_speed; |
1da177e4 | 379 | ibmphp_unlock_operations(); |
1da177e4 | 380 | |
3749c51a MW |
381 | switch (speed) { |
382 | case BUS_SPEED_33: | |
383 | break; | |
384 | case BUS_SPEED_66: | |
f7625980 | 385 | if (mode == BUS_MODE_PCIX) |
3749c51a MW |
386 | speed += 0x01; |
387 | break; | |
388 | case BUS_SPEED_100: | |
389 | case BUS_SPEED_133: | |
390 | speed += 0x01; | |
391 | break; | |
392 | default: | |
393 | /* Note (will need to change): there would be soon 256, 512 also */ | |
394 | rc = -ENODEV; | |
1da177e4 LT |
395 | } |
396 | ||
3749c51a MW |
397 | if (!rc) |
398 | bus->max_bus_speed = speed; | |
399 | ||
400 | debug("%s - Exit rc[%d] speed[%x]\n", __func__, rc, speed); | |
1da177e4 LT |
401 | return rc; |
402 | } | |
403 | ||
404 | /* | |
3c78bc61 | 405 | static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 *value, u8 flag) |
1da177e4 LT |
406 | { |
407 | int rc = -ENODEV; | |
408 | struct slot *pslot; | |
409 | struct slot myslot; | |
410 | ||
411 | debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", | |
412 | (ulong)hotplug_slot, (ulong) value); | |
413 | ||
414 | if (flag) | |
415 | ibmphp_lock_operations(); | |
416 | ||
417 | if (hotplug_slot && value) { | |
418 | pslot = hotplug_slot->private; | |
419 | if (pslot) { | |
420 | memcpy(&myslot, pslot, sizeof(struct slot)); | |
421 | rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS, | |
422 | &(myslot.status)); | |
423 | ||
424 | if (!(SLOT_LATCH (myslot.status)) && | |
425 | (SLOT_PRESENT (myslot.status))) { | |
426 | rc = ibmphp_hpc_readslot(pslot, | |
427 | READ_EXTSLOTSTATUS, | |
428 | &(myslot.ext_status)); | |
429 | if (!rc) | |
430 | *value = SLOT_SPEED(myslot.ext_status); | |
431 | } else | |
432 | *value = MAX_ADAPTER_NONE; | |
ff3ce480 | 433 | } |
1da177e4 LT |
434 | } |
435 | ||
436 | if (flag) | |
437 | ibmphp_unlock_operations(); | |
438 | ||
439 | debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value); | |
440 | return rc; | |
441 | } | |
442 | ||
3c78bc61 | 443 | static int get_bus_name(struct hotplug_slot *hotplug_slot, char *value) |
1da177e4 LT |
444 | { |
445 | int rc = -ENODEV; | |
446 | struct slot *pslot = NULL; | |
447 | ||
448 | debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot); | |
449 | ||
450 | ibmphp_lock_operations(); | |
451 | ||
452 | if (hotplug_slot) { | |
453 | pslot = hotplug_slot->private; | |
454 | if (pslot) { | |
455 | rc = 0; | |
456 | snprintf(value, 100, "Bus %x", pslot->bus); | |
457 | } | |
458 | } else | |
459 | rc = -ENODEV; | |
460 | ||
461 | ibmphp_unlock_operations(); | |
462 | debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value); | |
463 | return rc; | |
464 | } | |
465 | */ | |
466 | ||
467 | /**************************************************************************** | |
468 | * This routine will initialize the ops data structure used in the validate | |
469 | * function. It will also power off empty slots that are powered on since BIOS | |
470 | * leaves those on, albeit disconnected | |
471 | ****************************************************************************/ | |
472 | static int __init init_ops(void) | |
473 | { | |
474 | struct slot *slot_cur; | |
1da177e4 LT |
475 | int retval; |
476 | int rc; | |
477 | ||
2ac83ccc | 478 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
479 | debug("BEFORE GETTING SLOT STATUS, slot # %x\n", |
480 | slot_cur->number); | |
f7625980 | 481 | if (slot_cur->ctrl->revision == 0xFF) |
1da177e4 LT |
482 | if (get_ctrl_revision(slot_cur, |
483 | &slot_cur->ctrl->revision)) | |
484 | return -1; | |
485 | ||
f7625980 BH |
486 | if (slot_cur->bus_on->current_speed == 0xFF) |
487 | if (get_cur_bus_info(&slot_cur)) | |
1da177e4 | 488 | return -1; |
3749c51a | 489 | get_max_bus_speed(slot_cur); |
1da177e4 LT |
490 | |
491 | if (slot_cur->ctrl->options == 0xFF) | |
492 | if (get_hpc_options(slot_cur, &slot_cur->ctrl->options)) | |
493 | return -1; | |
494 | ||
495 | retval = slot_update(&slot_cur); | |
496 | if (retval) | |
497 | return retval; | |
498 | ||
499 | debug("status = %x\n", slot_cur->status); | |
500 | debug("ext_status = %x\n", slot_cur->ext_status); | |
501 | debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status)); | |
502 | debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status)); | |
503 | debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status)); | |
504 | ||
f7625980 BH |
505 | if ((SLOT_PWRGD(slot_cur->status)) && |
506 | !(SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
507 | !(SLOT_LATCH(slot_cur->status))) { |
508 | debug("BEFORE POWER OFF COMMAND\n"); | |
509 | rc = power_off(slot_cur); | |
510 | if (rc) | |
511 | return rc; | |
512 | ||
513 | /* retval = slot_update(&slot_cur); | |
514 | * if (retval) | |
515 | * return retval; | |
516 | * ibmphp_update_slot_info(slot_cur); | |
517 | */ | |
518 | } | |
519 | } | |
520 | init_flag = 0; | |
521 | return 0; | |
522 | } | |
523 | ||
524 | /* This operation will check whether the slot is within the bounds and | |
525 | * the operation is valid to perform on that slot | |
526 | * Parameters: slot, operation | |
527 | * Returns: 0 or error codes | |
528 | */ | |
529 | static int validate(struct slot *slot_cur, int opn) | |
530 | { | |
531 | int number; | |
532 | int retval; | |
533 | ||
534 | if (!slot_cur) | |
535 | return -ENODEV; | |
536 | number = slot_cur->number; | |
537 | if ((number > max_slots) || (number < 0)) | |
538 | return -EBADSLT; | |
539 | debug("slot_number in validate is %d\n", slot_cur->number); | |
540 | ||
541 | retval = slot_update(&slot_cur); | |
542 | if (retval) | |
543 | return retval; | |
544 | ||
545 | switch (opn) { | |
546 | case ENABLE: | |
f7625980 BH |
547 | if (!(SLOT_PWRGD(slot_cur->status)) && |
548 | (SLOT_PRESENT(slot_cur->status)) && | |
1da177e4 LT |
549 | !(SLOT_LATCH(slot_cur->status))) |
550 | return 0; | |
551 | break; | |
552 | case DISABLE: | |
f7625980 | 553 | if ((SLOT_PWRGD(slot_cur->status)) && |
1da177e4 LT |
554 | (SLOT_PRESENT(slot_cur->status)) && |
555 | !(SLOT_LATCH(slot_cur->status))) | |
556 | return 0; | |
557 | break; | |
558 | default: | |
559 | break; | |
560 | } | |
561 | err("validate failed....\n"); | |
562 | return -EINVAL; | |
563 | } | |
564 | ||
565 | /**************************************************************************** | |
566 | * This routine is for updating the data structures in the hotplug core | |
567 | * Parameters: struct slot | |
568 | * Returns: 0 or error | |
569 | ****************************************************************************/ | |
570 | int ibmphp_update_slot_info(struct slot *slot_cur) | |
571 | { | |
125450f8 | 572 | struct pci_bus *bus = slot_cur->hotplug_slot.pci_slot->bus; |
1da177e4 LT |
573 | u8 bus_speed; |
574 | u8 mode; | |
575 | ||
1da177e4 LT |
576 | bus_speed = slot_cur->bus_on->current_speed; |
577 | mode = slot_cur->bus_on->current_bus_mode; | |
578 | ||
579 | switch (bus_speed) { | |
580 | case BUS_SPEED_33: | |
581 | break; | |
582 | case BUS_SPEED_66: | |
f7625980 | 583 | if (mode == BUS_MODE_PCIX) |
1da177e4 LT |
584 | bus_speed += 0x01; |
585 | else if (mode == BUS_MODE_PCI) | |
586 | ; | |
587 | else | |
588 | bus_speed = PCI_SPEED_UNKNOWN; | |
589 | break; | |
590 | case BUS_SPEED_100: | |
591 | case BUS_SPEED_133: | |
592 | bus_speed += 0x01; | |
593 | break; | |
594 | default: | |
595 | bus_speed = PCI_SPEED_UNKNOWN; | |
596 | } | |
597 | ||
3749c51a | 598 | bus->cur_bus_speed = bus_speed; |
f7625980 BH |
599 | // To do: bus_names |
600 | ||
a7da2161 | 601 | return 0; |
1da177e4 LT |
602 | } |
603 | ||
604 | ||
605 | /****************************************************************************** | |
606 | * This function will return the pci_func, given bus and devfunc, or NULL. It | |
607 | * is called from visit routines | |
608 | ******************************************************************************/ | |
609 | ||
610 | static struct pci_func *ibm_slot_find(u8 busno, u8 device, u8 function) | |
611 | { | |
612 | struct pci_func *func_cur; | |
613 | struct slot *slot_cur; | |
2ac83ccc | 614 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
615 | if (slot_cur->func) { |
616 | func_cur = slot_cur->func; | |
617 | while (func_cur) { | |
618 | if ((func_cur->busno == busno) && | |
619 | (func_cur->device == device) && | |
620 | (func_cur->function == function)) | |
621 | return func_cur; | |
622 | func_cur = func_cur->next; | |
623 | } | |
624 | } | |
625 | } | |
626 | return NULL; | |
627 | } | |
628 | ||
629 | /************************************************************* | |
630 | * This routine frees up memory used by struct slot, including | |
631 | * the pointers to pci_func, bus, hotplug_slot, controller, | |
632 | * and deregistering from the hotplug core | |
633 | *************************************************************/ | |
634 | static void free_slots(void) | |
635 | { | |
2ac83ccc | 636 | struct slot *slot_cur, *next; |
1da177e4 | 637 | |
66bef8c0 | 638 | debug("%s -- enter\n", __func__); |
1da177e4 | 639 | |
2ac83ccc GT |
640 | list_for_each_entry_safe(slot_cur, next, &ibmphp_slot_head, |
641 | ibm_slot_list) { | |
125450f8 | 642 | pci_hp_del(&slot_cur->hotplug_slot); |
51bbf9be LW |
643 | slot_cur->ctrl = NULL; |
644 | slot_cur->bus_on = NULL; | |
645 | ||
646 | /* | |
647 | * We don't want to actually remove the resources, | |
648 | * since ibmphp_free_resources() will do just that. | |
649 | */ | |
650 | ibmphp_unconfigure_card(&slot_cur, -1); | |
651 | ||
125450f8 | 652 | pci_hp_destroy(&slot_cur->hotplug_slot); |
51bbf9be | 653 | kfree(slot_cur); |
1da177e4 | 654 | } |
66bef8c0 | 655 | debug("%s -- exit\n", __func__); |
1da177e4 LT |
656 | } |
657 | ||
658 | static void ibm_unconfigure_device(struct pci_func *func) | |
659 | { | |
660 | struct pci_dev *temp; | |
661 | u8 j; | |
662 | ||
66bef8c0 | 663 | debug("inside %s\n", __func__); |
1da177e4 LT |
664 | debug("func->device = %x, func->function = %x\n", |
665 | func->device, func->function); | |
666 | debug("func->device << 3 | 0x0 = %x\n", func->device << 3 | 0x0); | |
667 | ||
c4ec84c7 RW |
668 | pci_lock_rescan_remove(); |
669 | ||
1da177e4 | 670 | for (j = 0; j < 0x08; j++) { |
48ec0535 SK |
671 | temp = pci_get_domain_bus_and_slot(0, func->busno, |
672 | (func->device << 3) | j); | |
f362b8bf | 673 | if (temp) { |
210647af | 674 | pci_stop_and_remove_bus_device(temp); |
f362b8bf JP |
675 | pci_dev_put(temp); |
676 | } | |
1da177e4 | 677 | } |
c4ec84c7 | 678 | |
f362b8bf | 679 | pci_dev_put(func->dev); |
c4ec84c7 RW |
680 | |
681 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
682 | } |
683 | ||
684 | /* | |
f7625980 BH |
685 | * The following function is to fix kernel bug regarding |
686 | * getting bus entries, here we manually add those primary | |
1da177e4 LT |
687 | * bus entries to kernel bus structure whenever apply |
688 | */ | |
689 | static u8 bus_structure_fixup(u8 busno) | |
690 | { | |
c90570d9 | 691 | struct pci_bus *bus, *b; |
1da177e4 LT |
692 | struct pci_dev *dev; |
693 | u16 l; | |
694 | ||
695 | if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno))) | |
696 | return 1; | |
697 | ||
698 | bus = kmalloc(sizeof(*bus), GFP_KERNEL); | |
c7abb235 | 699 | if (!bus) |
1da177e4 | 700 | return 1; |
c7abb235 | 701 | |
1da177e4 LT |
702 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); |
703 | if (!dev) { | |
704 | kfree(bus); | |
1da177e4 LT |
705 | return 1; |
706 | } | |
707 | ||
708 | bus->number = busno; | |
709 | bus->ops = ibmphp_pci_bus->ops; | |
710 | dev->bus = bus; | |
711 | for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) { | |
712 | if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) && | |
713 | (l != 0x0000) && (l != 0xffff)) { | |
367fa982 | 714 | debug("%s - Inside bus_structure_fixup()\n", |
66bef8c0 | 715 | __func__); |
c90570d9 YW |
716 | b = pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL); |
717 | if (!b) | |
718 | continue; | |
719 | ||
720 | pci_bus_add_devices(b); | |
1da177e4 LT |
721 | break; |
722 | } | |
723 | } | |
724 | ||
725 | kfree(dev); | |
726 | kfree(bus); | |
727 | ||
728 | return 0; | |
729 | } | |
730 | ||
731 | static int ibm_configure_device(struct pci_func *func) | |
732 | { | |
1da177e4 LT |
733 | struct pci_bus *child; |
734 | int num; | |
735 | int flag = 0; /* this is to make sure we don't double scan the bus, | |
736 | for bridged devices primarily */ | |
737 | ||
c4ec84c7 RW |
738 | pci_lock_rescan_remove(); |
739 | ||
1da177e4 LT |
740 | if (!(bus_structure_fixup(func->busno))) |
741 | flag = 1; | |
742 | if (func->dev == NULL) | |
48ec0535 | 743 | func->dev = pci_get_domain_bus_and_slot(0, func->busno, |
1da177e4 LT |
744 | PCI_DEVFN(func->device, func->function)); |
745 | ||
746 | if (func->dev == NULL) { | |
747 | struct pci_bus *bus = pci_find_bus(0, func->busno); | |
748 | if (!bus) | |
c4ec84c7 | 749 | goto out; |
1da177e4 LT |
750 | |
751 | num = pci_scan_slot(bus, | |
752 | PCI_DEVFN(func->device, func->function)); | |
753 | if (num) | |
754 | pci_bus_add_devices(bus); | |
755 | ||
48ec0535 | 756 | func->dev = pci_get_domain_bus_and_slot(0, func->busno, |
1da177e4 LT |
757 | PCI_DEVFN(func->device, func->function)); |
758 | if (func->dev == NULL) { | |
759 | err("ERROR... : pci_dev still NULL\n"); | |
c4ec84c7 | 760 | goto out; |
1da177e4 LT |
761 | } |
762 | } | |
763 | if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) { | |
2d7abf32 YL |
764 | pci_hp_add_bridge(func->dev); |
765 | child = func->dev->subordinate; | |
766 | if (child) | |
767 | pci_bus_add_devices(child); | |
1da177e4 LT |
768 | } |
769 | ||
c4ec84c7 RW |
770 | out: |
771 | pci_unlock_rescan_remove(); | |
1da177e4 LT |
772 | return 0; |
773 | } | |
774 | ||
775 | /******************************************************* | |
f7625980 | 776 | * Returns whether the bus is empty or not |
1da177e4 | 777 | *******************************************************/ |
3c78bc61 | 778 | static int is_bus_empty(struct slot *slot_cur) |
1da177e4 LT |
779 | { |
780 | int rc; | |
3c78bc61 | 781 | struct slot *tmp_slot; |
1da177e4 LT |
782 | u8 i = slot_cur->bus_on->slot_min; |
783 | ||
784 | while (i <= slot_cur->bus_on->slot_max) { | |
785 | if (i == slot_cur->number) { | |
786 | i++; | |
787 | continue; | |
788 | } | |
789 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
790 | if (!tmp_slot) | |
791 | return 0; | |
792 | rc = slot_update(&tmp_slot); | |
793 | if (rc) | |
794 | return 0; | |
795 | if (SLOT_PRESENT(tmp_slot->status) && | |
796 | SLOT_PWRGD(tmp_slot->status)) | |
797 | return 0; | |
798 | i++; | |
799 | } | |
800 | return 1; | |
801 | } | |
802 | ||
803 | /*********************************************************** | |
f7625980 | 804 | * If the HPC permits and the bus currently empty, tries to set the |
1da177e4 LT |
805 | * bus speed and mode at the maximum card and bus capability |
806 | * Parameters: slot | |
807 | * Returns: bus is set (0) or error code | |
808 | ***********************************************************/ | |
3c78bc61 | 809 | static int set_bus(struct slot *slot_cur) |
1da177e4 LT |
810 | { |
811 | int rc; | |
812 | u8 speed; | |
813 | u8 cmd = 0x0; | |
814 | int retval; | |
8394264d | 815 | static const struct pci_device_id ciobx[] = { |
1da177e4 | 816 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) }, |
ff3ce480 | 817 | { }, |
f7625980 | 818 | }; |
1da177e4 | 819 | |
66bef8c0 | 820 | debug("%s - entry slot # %d\n", __func__, slot_cur->number); |
1da177e4 LT |
821 | if (SET_BUS_STATUS(slot_cur->ctrl) && is_bus_empty(slot_cur)) { |
822 | rc = slot_update(&slot_cur); | |
823 | if (rc) | |
824 | return rc; | |
825 | speed = SLOT_SPEED(slot_cur->ext_status); | |
826 | debug("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed); | |
827 | switch (speed) { | |
828 | case HPC_SLOT_SPEED_33: | |
829 | cmd = HPC_BUS_33CONVMODE; | |
830 | break; | |
831 | case HPC_SLOT_SPEED_66: | |
832 | if (SLOT_PCIX(slot_cur->ext_status)) { | |
833 | if ((slot_cur->supported_speed >= BUS_SPEED_66) && | |
834 | (slot_cur->supported_bus_mode == BUS_MODE_PCIX)) | |
835 | cmd = HPC_BUS_66PCIXMODE; | |
836 | else if (!SLOT_BUS_MODE(slot_cur->ext_status)) | |
837 | /* if max slot/bus capability is 66 pci | |
838 | and there's no bus mode mismatch, then | |
f7625980 | 839 | the adapter supports 66 pci */ |
1da177e4 LT |
840 | cmd = HPC_BUS_66CONVMODE; |
841 | else | |
842 | cmd = HPC_BUS_33CONVMODE; | |
843 | } else { | |
844 | if (slot_cur->supported_speed >= BUS_SPEED_66) | |
845 | cmd = HPC_BUS_66CONVMODE; | |
846 | else | |
847 | cmd = HPC_BUS_33CONVMODE; | |
848 | } | |
849 | break; | |
850 | case HPC_SLOT_SPEED_133: | |
851 | switch (slot_cur->supported_speed) { | |
852 | case BUS_SPEED_33: | |
853 | cmd = HPC_BUS_33CONVMODE; | |
854 | break; | |
855 | case BUS_SPEED_66: | |
856 | if (slot_cur->supported_bus_mode == BUS_MODE_PCIX) | |
857 | cmd = HPC_BUS_66PCIXMODE; | |
858 | else | |
859 | cmd = HPC_BUS_66CONVMODE; | |
860 | break; | |
861 | case BUS_SPEED_100: | |
862 | cmd = HPC_BUS_100PCIXMODE; | |
863 | break; | |
864 | case BUS_SPEED_133: | |
865 | /* This is to take care of the bug in CIOBX chip */ | |
866 | if (pci_dev_present(ciobx)) | |
867 | ibmphp_hpc_writeslot(slot_cur, | |
868 | HPC_BUS_100PCIXMODE); | |
869 | cmd = HPC_BUS_133PCIXMODE; | |
870 | break; | |
871 | default: | |
872 | err("Wrong bus speed\n"); | |
873 | return -ENODEV; | |
874 | } | |
875 | break; | |
876 | default: | |
877 | err("wrong slot speed\n"); | |
878 | return -ENODEV; | |
879 | } | |
880 | debug("setting bus speed for slot %d, cmd %x\n", | |
881 | slot_cur->number, cmd); | |
882 | retval = ibmphp_hpc_writeslot(slot_cur, cmd); | |
883 | if (retval) { | |
884 | err("setting bus speed failed\n"); | |
885 | return retval; | |
886 | } | |
887 | if (CTLR_RESULT(slot_cur->ctrl->status)) { | |
888 | err("command not completed successfully in set_bus\n"); | |
889 | return -EIO; | |
890 | } | |
891 | } | |
f7625980 | 892 | /* This is for x440, once Brandon fixes the firmware, |
1da177e4 LT |
893 | will not need this delay */ |
894 | msleep(1000); | |
66bef8c0 | 895 | debug("%s -Exit\n", __func__); |
1da177e4 LT |
896 | return 0; |
897 | } | |
898 | ||
899 | /* This routine checks the bus limitations that the slot is on from the BIOS. | |
f7625980 | 900 | * This is used in deciding whether or not to power up the slot. |
1da177e4 | 901 | * (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on |
f7625980 | 902 | * same bus) |
1da177e4 LT |
903 | * Parameters: slot |
904 | * Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus | |
905 | */ | |
906 | static int check_limitations(struct slot *slot_cur) | |
907 | { | |
908 | u8 i; | |
3c78bc61 | 909 | struct slot *tmp_slot; |
1da177e4 LT |
910 | u8 count = 0; |
911 | u8 limitation = 0; | |
912 | ||
913 | for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) { | |
914 | tmp_slot = ibmphp_get_slot_from_physical_num(i); | |
915 | if (!tmp_slot) | |
916 | return -ENODEV; | |
917 | if ((SLOT_PWRGD(tmp_slot->status)) && | |
918 | !(SLOT_CONNECT(tmp_slot->status))) | |
919 | count++; | |
920 | } | |
921 | get_cur_bus_info(&slot_cur); | |
922 | switch (slot_cur->bus_on->current_speed) { | |
923 | case BUS_SPEED_33: | |
924 | limitation = slot_cur->bus_on->slots_at_33_conv; | |
925 | break; | |
926 | case BUS_SPEED_66: | |
927 | if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX) | |
928 | limitation = slot_cur->bus_on->slots_at_66_pcix; | |
929 | else | |
930 | limitation = slot_cur->bus_on->slots_at_66_conv; | |
931 | break; | |
932 | case BUS_SPEED_100: | |
933 | limitation = slot_cur->bus_on->slots_at_100_pcix; | |
934 | break; | |
935 | case BUS_SPEED_133: | |
936 | limitation = slot_cur->bus_on->slots_at_133_pcix; | |
937 | break; | |
938 | } | |
939 | ||
940 | if ((count + 1) > limitation) | |
941 | return -EINVAL; | |
942 | return 0; | |
943 | } | |
944 | ||
945 | static inline void print_card_capability(struct slot *slot_cur) | |
946 | { | |
947 | info("capability of the card is "); | |
f7625980 | 948 | if ((slot_cur->ext_status & CARD_INFO) == PCIX133) |
1da177e4 LT |
949 | info(" 133 MHz PCI-X\n"); |
950 | else if ((slot_cur->ext_status & CARD_INFO) == PCIX66) | |
951 | info(" 66 MHz PCI-X\n"); | |
952 | else if ((slot_cur->ext_status & CARD_INFO) == PCI66) | |
953 | info(" 66 MHz PCI\n"); | |
954 | else | |
955 | info(" 33 MHz PCI\n"); | |
956 | ||
957 | } | |
958 | ||
959 | /* This routine will power on the slot, configure the device(s) and find the | |
960 | * drivers for them. | |
961 | * Parameters: hotplug_slot | |
962 | * Returns: 0 or failure codes | |
963 | */ | |
964 | static int enable_slot(struct hotplug_slot *hs) | |
965 | { | |
966 | int rc, i, rcpr; | |
967 | struct slot *slot_cur; | |
968 | u8 function; | |
969 | struct pci_func *tmp_func; | |
970 | ||
971 | ibmphp_lock_operations(); | |
972 | ||
973 | debug("ENABLING SLOT........\n"); | |
125450f8 | 974 | slot_cur = to_slot(hs); |
1da177e4 | 975 | |
79e50e72 QL |
976 | rc = validate(slot_cur, ENABLE); |
977 | if (rc) { | |
1da177e4 LT |
978 | err("validate function failed\n"); |
979 | goto error_nopower; | |
980 | } | |
981 | ||
982 | attn_LED_blink(slot_cur); | |
f7625980 | 983 | |
1da177e4 LT |
984 | rc = set_bus(slot_cur); |
985 | if (rc) { | |
986 | err("was not able to set the bus\n"); | |
987 | goto error_nopower; | |
988 | } | |
989 | ||
990 | /*-----------------debugging------------------------------*/ | |
991 | get_cur_bus_info(&slot_cur); | |
992 | debug("the current bus speed right after set_bus = %x\n", | |
993 | slot_cur->bus_on->current_speed); | |
994 | /*----------------------------------------------------------*/ | |
995 | ||
996 | rc = check_limitations(slot_cur); | |
997 | if (rc) { | |
998 | err("Adding this card exceeds the limitations of this bus.\n"); | |
227f0647 | 999 | err("(i.e., >1 133MHz cards running on same bus, or >2 66 PCI cards running on same bus.\n"); |
1da177e4 LT |
1000 | err("Try hot-adding into another bus\n"); |
1001 | rc = -EINVAL; | |
1002 | goto error_nopower; | |
1003 | } | |
1004 | ||
1005 | rc = power_on(slot_cur); | |
1006 | ||
1007 | if (rc) { | |
1008 | err("something wrong when powering up... please see below for details\n"); | |
1009 | /* need to turn off before on, otherwise, blinking overwrites */ | |
1010 | attn_off(slot_cur); | |
1011 | attn_on(slot_cur); | |
1012 | if (slot_update(&slot_cur)) { | |
1013 | attn_off(slot_cur); | |
1014 | attn_on(slot_cur); | |
1015 | rc = -ENODEV; | |
1016 | goto exit; | |
1017 | } | |
1018 | /* Check to see the error of why it failed */ | |
1019 | if ((SLOT_POWER(slot_cur->status)) && | |
1020 | !(SLOT_PWRGD(slot_cur->status))) | |
1021 | err("power fault occurred trying to power up\n"); | |
1022 | else if (SLOT_BUS_SPEED(slot_cur->status)) { | |
227f0647 | 1023 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1024 | print_card_capability(slot_cur); |
1025 | } else if (SLOT_BUS_MODE(slot_cur->ext_status)) { | |
227f0647 | 1026 | err("bus mode mismatch occurred. please check current bus mode and card capability\n"); |
1da177e4 LT |
1027 | print_card_capability(slot_cur); |
1028 | } | |
1029 | ibmphp_update_slot_info(slot_cur); | |
1030 | goto exit; | |
1031 | } | |
1032 | debug("after power_on\n"); | |
1033 | /*-----------------------debugging---------------------------*/ | |
1034 | get_cur_bus_info(&slot_cur); | |
1035 | debug("the current bus speed right after power_on = %x\n", | |
1036 | slot_cur->bus_on->current_speed); | |
1037 | /*----------------------------------------------------------*/ | |
1038 | ||
1039 | rc = slot_update(&slot_cur); | |
1040 | if (rc) | |
1041 | goto error_power; | |
f7625980 | 1042 | |
1da177e4 LT |
1043 | rc = -EINVAL; |
1044 | if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) { | |
1045 | err("power fault occurred trying to power up...\n"); | |
1046 | goto error_power; | |
1047 | } | |
1048 | if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) { | |
227f0647 | 1049 | err("bus speed mismatch occurred. please check current bus speed and card capability\n"); |
1da177e4 LT |
1050 | print_card_capability(slot_cur); |
1051 | goto error_power; | |
f7625980 | 1052 | } |
1da177e4 LT |
1053 | /* Don't think this case will happen after above checks... |
1054 | * but just in case, for paranoia sake */ | |
1055 | if (!(SLOT_POWER(slot_cur->status))) { | |
1056 | err("power on failed...\n"); | |
1057 | goto error_power; | |
1058 | } | |
1059 | ||
f5afe806 | 1060 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 | 1061 | if (!slot_cur->func) { |
a7da2161 | 1062 | /* do update_slot_info here? */ |
1da177e4 LT |
1063 | rc = -ENOMEM; |
1064 | goto error_power; | |
1065 | } | |
1da177e4 LT |
1066 | slot_cur->func->busno = slot_cur->bus; |
1067 | slot_cur->func->device = slot_cur->device; | |
1068 | for (i = 0; i < 4; i++) | |
1069 | slot_cur->func->irq[i] = slot_cur->irq[i]; | |
1070 | ||
1071 | debug("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", | |
1072 | slot_cur->bus, slot_cur->device); | |
1073 | ||
1074 | if (ibmphp_configure_card(slot_cur->func, slot_cur->number)) { | |
1075 | err("configure_card was unsuccessful...\n"); | |
1076 | /* true because don't need to actually deallocate resources, | |
1077 | * just remove references */ | |
1078 | ibmphp_unconfigure_card(&slot_cur, 1); | |
1079 | debug("after unconfigure_card\n"); | |
1080 | slot_cur->func = NULL; | |
1081 | rc = -ENOMEM; | |
1082 | goto error_power; | |
1083 | } | |
1084 | ||
1085 | function = 0x00; | |
1086 | do { | |
1087 | tmp_func = ibm_slot_find(slot_cur->bus, slot_cur->func->device, | |
1088 | function++); | |
1089 | if (tmp_func && !(tmp_func->dev)) | |
1090 | ibm_configure_device(tmp_func); | |
1091 | } while (tmp_func); | |
1092 | ||
1093 | attn_off(slot_cur); | |
1094 | if (slot_update(&slot_cur)) { | |
1095 | rc = -EFAULT; | |
1096 | goto exit; | |
1097 | } | |
1098 | ibmphp_print_test(); | |
1099 | rc = ibmphp_update_slot_info(slot_cur); | |
1100 | exit: | |
f7625980 | 1101 | ibmphp_unlock_operations(); |
1da177e4 LT |
1102 | return rc; |
1103 | ||
1104 | error_nopower: | |
1105 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1106 | attn_on(slot_cur); | |
1107 | error_cont: | |
1108 | rcpr = slot_update(&slot_cur); | |
1109 | if (rcpr) { | |
1110 | rc = rcpr; | |
1111 | goto exit; | |
1112 | } | |
1113 | ibmphp_update_slot_info(slot_cur); | |
1114 | goto exit; | |
1115 | ||
1116 | error_power: | |
1117 | attn_off(slot_cur); /* need to turn off if was blinking b4 */ | |
1118 | attn_on(slot_cur); | |
1119 | rcpr = power_off(slot_cur); | |
1120 | if (rcpr) { | |
1121 | rc = rcpr; | |
1122 | goto exit; | |
1123 | } | |
1124 | goto error_cont; | |
1125 | } | |
1126 | ||
1127 | /************************************************************** | |
1128 | * HOT REMOVING ADAPTER CARD * | |
1129 | * INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE * | |
1130 | * OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE * | |
ff3ce480 | 1131 | * DISABLE POWER , * |
1da177e4 LT |
1132 | **************************************************************/ |
1133 | static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot) | |
1134 | { | |
125450f8 | 1135 | struct slot *slot = to_slot(hotplug_slot); |
1da177e4 | 1136 | int rc; |
f7625980 | 1137 | |
1da177e4 LT |
1138 | ibmphp_lock_operations(); |
1139 | rc = ibmphp_do_disable_slot(slot); | |
1140 | ibmphp_unlock_operations(); | |
1141 | return rc; | |
1142 | } | |
1143 | ||
1144 | int ibmphp_do_disable_slot(struct slot *slot_cur) | |
1145 | { | |
1146 | int rc; | |
1147 | u8 flag; | |
1148 | ||
f7625980 BH |
1149 | debug("DISABLING SLOT...\n"); |
1150 | ||
656f978f | 1151 | if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) |
1da177e4 | 1152 | return -ENODEV; |
f7625980 | 1153 | |
1da177e4 | 1154 | flag = slot_cur->flag; |
dc6712d1 | 1155 | slot_cur->flag = 1; |
1da177e4 | 1156 | |
dc6712d1 | 1157 | if (flag == 1) { |
1da177e4 LT |
1158 | rc = validate(slot_cur, DISABLE); |
1159 | /* checking if powered off already & valid slot # */ | |
1160 | if (rc) | |
1161 | goto error; | |
1162 | } | |
1163 | attn_LED_blink(slot_cur); | |
1164 | ||
1165 | if (slot_cur->func == NULL) { | |
f7625980 | 1166 | /* We need this for functions that were there on bootup */ |
f5afe806 | 1167 | slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); |
1da177e4 | 1168 | if (!slot_cur->func) { |
1da177e4 LT |
1169 | rc = -ENOMEM; |
1170 | goto error; | |
1171 | } | |
1da177e4 LT |
1172 | slot_cur->func->busno = slot_cur->bus; |
1173 | slot_cur->func->device = slot_cur->device; | |
1174 | } | |
1175 | ||
1176 | ibm_unconfigure_device(slot_cur->func); | |
f7625980 BH |
1177 | |
1178 | /* | |
1179 | * If we got here from latch suddenly opening on operating card or | |
1180 | * a power fault, there's no power to the card, so cannot | |
1181 | * read from it to determine what resources it occupied. This operation | |
1182 | * is forbidden anyhow. The best we can do is remove it from kernel | |
1183 | * lists at least */ | |
1da177e4 LT |
1184 | |
1185 | if (!flag) { | |
1186 | attn_off(slot_cur); | |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | rc = ibmphp_unconfigure_card(&slot_cur, 0); | |
1191 | slot_cur->func = NULL; | |
1192 | debug("in disable_slot. after unconfigure_card\n"); | |
1193 | if (rc) { | |
1194 | err("could not unconfigure card.\n"); | |
1195 | goto error; | |
1196 | } | |
1197 | ||
1198 | rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF); | |
1199 | if (rc) | |
1200 | goto error; | |
1201 | ||
1202 | attn_off(slot_cur); | |
1203 | rc = slot_update(&slot_cur); | |
1204 | if (rc) | |
1205 | goto exit; | |
1206 | ||
1207 | rc = ibmphp_update_slot_info(slot_cur); | |
1208 | ibmphp_print_test(); | |
1209 | exit: | |
1210 | return rc; | |
1211 | ||
1212 | error: | |
1213 | /* Need to turn off if was blinking b4 */ | |
1214 | attn_off(slot_cur); | |
1215 | attn_on(slot_cur); | |
1216 | if (slot_update(&slot_cur)) { | |
1217 | rc = -EFAULT; | |
1218 | goto exit; | |
1219 | } | |
f7625980 | 1220 | if (flag) |
1da177e4 LT |
1221 | ibmphp_update_slot_info(slot_cur); |
1222 | goto exit; | |
1223 | } | |
1224 | ||
81c4b5bf | 1225 | const struct hotplug_slot_ops ibmphp_hotplug_slot_ops = { |
1da177e4 LT |
1226 | .set_attention_status = set_attention_status, |
1227 | .enable_slot = enable_slot, | |
1228 | .disable_slot = ibmphp_disable_slot, | |
1229 | .hardware_test = NULL, | |
1230 | .get_power_status = get_power_status, | |
1231 | .get_attention_status = get_attention_status, | |
1232 | .get_latch_status = get_latch_status, | |
1233 | .get_adapter_status = get_adapter_present, | |
1da177e4 LT |
1234 | /* .get_max_adapter_speed = get_max_adapter_speed, |
1235 | .get_bus_name_status = get_bus_name, | |
1236 | */ | |
1237 | }; | |
1238 | ||
1239 | static void ibmphp_unload(void) | |
1240 | { | |
1241 | free_slots(); | |
1242 | debug("after slots\n"); | |
1243 | ibmphp_free_resources(); | |
1244 | debug("after resources\n"); | |
1245 | ibmphp_free_bus_info_queue(); | |
1246 | debug("after bus info\n"); | |
1247 | ibmphp_free_ebda_hpc_queue(); | |
1248 | debug("after ebda hpc\n"); | |
1249 | ibmphp_free_ebda_pci_rsrc_queue(); | |
1250 | debug("after ebda pci rsrc\n"); | |
1251 | kfree(ibmphp_pci_bus); | |
1252 | } | |
1253 | ||
1254 | static int __init ibmphp_init(void) | |
1255 | { | |
1256 | struct pci_bus *bus; | |
1257 | int i = 0; | |
1258 | int rc = 0; | |
1259 | ||
1260 | init_flag = 1; | |
1261 | ||
1262 | info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); | |
1263 | ||
1264 | ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); | |
1265 | if (!ibmphp_pci_bus) { | |
1da177e4 LT |
1266 | rc = -ENOMEM; |
1267 | goto exit; | |
1268 | } | |
1269 | ||
1270 | bus = pci_find_bus(0, 0); | |
1271 | if (!bus) { | |
1272 | err("Can't find the root pci bus, can not continue\n"); | |
1273 | rc = -ENODEV; | |
1274 | goto error; | |
1275 | } | |
1276 | memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus)); | |
1277 | ||
1278 | ibmphp_debug = debug; | |
1279 | ||
1280 | ibmphp_hpc_initvars(); | |
1281 | ||
1282 | for (i = 0; i < 16; i++) | |
1283 | irqs[i] = 0; | |
1284 | ||
79e50e72 QL |
1285 | rc = ibmphp_access_ebda(); |
1286 | if (rc) | |
1da177e4 LT |
1287 | goto error; |
1288 | debug("after ibmphp_access_ebda()\n"); | |
1289 | ||
79e50e72 QL |
1290 | rc = ibmphp_rsrc_init(); |
1291 | if (rc) | |
1da177e4 LT |
1292 | goto error; |
1293 | debug("AFTER Resource & EBDA INITIALIZATIONS\n"); | |
1294 | ||
1295 | max_slots = get_max_slots(); | |
f7625980 | 1296 | |
79e50e72 QL |
1297 | rc = ibmphp_register_pci(); |
1298 | if (rc) | |
1da177e4 LT |
1299 | goto error; |
1300 | ||
1301 | if (init_ops()) { | |
1302 | rc = -ENODEV; | |
1303 | goto error; | |
1304 | } | |
1305 | ||
1306 | ibmphp_print_test(); | |
79e50e72 QL |
1307 | rc = ibmphp_hpc_start_poll_thread(); |
1308 | if (rc) | |
1da177e4 | 1309 | goto error; |
1da177e4 | 1310 | |
1da177e4 LT |
1311 | exit: |
1312 | return rc; | |
1313 | ||
1314 | error: | |
1315 | ibmphp_unload(); | |
1316 | goto exit; | |
1317 | } | |
1318 | ||
1319 | static void __exit ibmphp_exit(void) | |
1320 | { | |
1321 | ibmphp_hpc_stop_poll_thread(); | |
1322 | debug("after polling\n"); | |
1323 | ibmphp_unload(); | |
1324 | debug("done\n"); | |
1325 | } | |
1326 | ||
1327 | module_init(ibmphp_init); | |
64f039d3 | 1328 | module_exit(ibmphp_exit); |