1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * IBM Hot Plug Controller Driver |
4 | * |
5 | * Written By: Tong Yu, 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 | * |
12 | * Send feedback to <gregkh@us.ibm.com> |
13 | * |
14 | */ |
15 | |
16 | #include <linux/module.h> |
17 | #include <linux/errno.h> |
18 | #include <linux/mm.h> |
19 | #include <linux/slab.h> |
20 | #include <linux/pci.h> |
21 | #include <linux/list.h> |
22 | #include <linux/init.h> |
23 | #include "ibmphp.h" |
24 | |
25 | /* |
26 | * POST builds data blocks(in this data block definition, a char-1 |
27 | * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended |
28 | * BIOS Data Area which describe the configuration of the hot-plug |
29 | * controllers and resources used by the PCI Hot-Plug devices. |
30 | * |
31 | * This file walks EBDA, maps data block from physical addr, |
32 | * reconstruct linked lists about all system resource(MEM, PFM, IO) |
33 | * already assigned by POST, as well as linked lists about hot plug |
34 | * controllers (ctlr#, slot#, bus&slot features...) |
35 | */ |
36 | |
37 | /* Global lists */ |
38 | LIST_HEAD(ibmphp_ebda_pci_rsrc_head); |
39 | LIST_HEAD(ibmphp_slot_head); |
40 | |
41 | /* Local variables */ |
42 | static struct ebda_hpc_list *hpc_list_ptr; |
43 | static struct ebda_rsrc_list *rsrc_list_ptr; |
44 | static struct rio_table_hdr *rio_table_ptr = NULL; |
45 | static LIST_HEAD(ebda_hpc_head); |
46 | static LIST_HEAD(bus_info_head); |
47 | static LIST_HEAD(rio_vg_head); |
48 | static LIST_HEAD(rio_lo_head); |
49 | static LIST_HEAD(opt_vg_head); |
50 | static LIST_HEAD(opt_lo_head); |
51 | static void __iomem *io_mem; |
52 | |
53 | /* Local functions */ |
54 | static int ebda_rsrc_controller(void); |
55 | static int ebda_rsrc_rsrc(void); |
56 | static int ebda_rio_table(void); |
57 | |
58 | static struct ebda_hpc_list * __init alloc_ebda_hpc_list(void) |
59 | { |
60 | return kzalloc(size: sizeof(struct ebda_hpc_list), GFP_KERNEL); |
61 | } |
62 | |
63 | static struct controller *alloc_ebda_hpc(u32 slot_count, u32 bus_count) |
64 | { |
65 | struct controller *controller; |
66 | struct ebda_hpc_slot *slots; |
67 | struct ebda_hpc_bus *buses; |
68 | |
69 | controller = kzalloc(size: sizeof(struct controller), GFP_KERNEL); |
70 | if (!controller) |
71 | goto error; |
72 | |
73 | slots = kcalloc(n: slot_count, size: sizeof(struct ebda_hpc_slot), GFP_KERNEL); |
74 | if (!slots) |
75 | goto error_contr; |
76 | controller->slots = slots; |
77 | |
78 | buses = kcalloc(n: bus_count, size: sizeof(struct ebda_hpc_bus), GFP_KERNEL); |
79 | if (!buses) |
80 | goto error_slots; |
81 | controller->buses = buses; |
82 | |
83 | return controller; |
84 | error_slots: |
85 | kfree(objp: controller->slots); |
86 | error_contr: |
87 | kfree(objp: controller); |
88 | error: |
89 | return NULL; |
90 | } |
91 | |
92 | static void free_ebda_hpc(struct controller *controller) |
93 | { |
94 | kfree(objp: controller->slots); |
95 | kfree(objp: controller->buses); |
96 | kfree(objp: controller); |
97 | } |
98 | |
99 | static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list(void) |
100 | { |
101 | return kzalloc(size: sizeof(struct ebda_rsrc_list), GFP_KERNEL); |
102 | } |
103 | |
104 | static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc(void) |
105 | { |
106 | return kzalloc(size: sizeof(struct ebda_pci_rsrc), GFP_KERNEL); |
107 | } |
108 | |
109 | static void __init print_bus_info(void) |
110 | { |
111 | struct bus_info *ptr; |
112 | |
113 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
114 | debug("%s - slot_min = %x\n" , __func__, ptr->slot_min); |
115 | debug("%s - slot_max = %x\n" , __func__, ptr->slot_max); |
116 | debug("%s - slot_count = %x\n" , __func__, ptr->slot_count); |
117 | debug("%s - bus# = %x\n" , __func__, ptr->busno); |
118 | debug("%s - current_speed = %x\n" , __func__, ptr->current_speed); |
119 | debug("%s - controller_id = %x\n" , __func__, ptr->controller_id); |
120 | |
121 | debug("%s - slots_at_33_conv = %x\n" , __func__, ptr->slots_at_33_conv); |
122 | debug("%s - slots_at_66_conv = %x\n" , __func__, ptr->slots_at_66_conv); |
123 | debug("%s - slots_at_66_pcix = %x\n" , __func__, ptr->slots_at_66_pcix); |
124 | debug("%s - slots_at_100_pcix = %x\n" , __func__, ptr->slots_at_100_pcix); |
125 | debug("%s - slots_at_133_pcix = %x\n" , __func__, ptr->slots_at_133_pcix); |
126 | |
127 | } |
128 | } |
129 | |
130 | static void print_lo_info(void) |
131 | { |
132 | struct rio_detail *ptr; |
133 | debug("print_lo_info ----\n" ); |
134 | list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) { |
135 | debug("%s - rio_node_id = %x\n" , __func__, ptr->rio_node_id); |
136 | debug("%s - rio_type = %x\n" , __func__, ptr->rio_type); |
137 | debug("%s - owner_id = %x\n" , __func__, ptr->owner_id); |
138 | debug("%s - first_slot_num = %x\n" , __func__, ptr->first_slot_num); |
139 | debug("%s - wpindex = %x\n" , __func__, ptr->wpindex); |
140 | debug("%s - chassis_num = %x\n" , __func__, ptr->chassis_num); |
141 | |
142 | } |
143 | } |
144 | |
145 | static void print_vg_info(void) |
146 | { |
147 | struct rio_detail *ptr; |
148 | debug("%s ---\n" , __func__); |
149 | list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) { |
150 | debug("%s - rio_node_id = %x\n" , __func__, ptr->rio_node_id); |
151 | debug("%s - rio_type = %x\n" , __func__, ptr->rio_type); |
152 | debug("%s - owner_id = %x\n" , __func__, ptr->owner_id); |
153 | debug("%s - first_slot_num = %x\n" , __func__, ptr->first_slot_num); |
154 | debug("%s - wpindex = %x\n" , __func__, ptr->wpindex); |
155 | debug("%s - chassis_num = %x\n" , __func__, ptr->chassis_num); |
156 | |
157 | } |
158 | } |
159 | |
160 | static void __init print_ebda_pci_rsrc(void) |
161 | { |
162 | struct ebda_pci_rsrc *ptr; |
163 | |
164 | list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) { |
165 | debug("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n" , |
166 | __func__, ptr->rsrc_type, ptr->bus_num, ptr->dev_fun, ptr->start_addr, ptr->end_addr); |
167 | } |
168 | } |
169 | |
170 | static void __init print_ibm_slot(void) |
171 | { |
172 | struct slot *ptr; |
173 | |
174 | list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) { |
175 | debug("%s - slot_number: %x\n" , __func__, ptr->number); |
176 | } |
177 | } |
178 | |
179 | static void __init print_opt_vg(void) |
180 | { |
181 | struct opt_rio *ptr; |
182 | debug("%s ---\n" , __func__); |
183 | list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { |
184 | debug("%s - rio_type %x\n" , __func__, ptr->rio_type); |
185 | debug("%s - chassis_num: %x\n" , __func__, ptr->chassis_num); |
186 | debug("%s - first_slot_num: %x\n" , __func__, ptr->first_slot_num); |
187 | debug("%s - middle_num: %x\n" , __func__, ptr->middle_num); |
188 | } |
189 | } |
190 | |
191 | static void __init print_ebda_hpc(void) |
192 | { |
193 | struct controller *hpc_ptr; |
194 | u16 index; |
195 | |
196 | list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) { |
197 | for (index = 0; index < hpc_ptr->slot_count; index++) { |
198 | debug("%s - physical slot#: %x\n" , __func__, hpc_ptr->slots[index].slot_num); |
199 | debug("%s - pci bus# of the slot: %x\n" , __func__, hpc_ptr->slots[index].slot_bus_num); |
200 | debug("%s - index into ctlr addr: %x\n" , __func__, hpc_ptr->slots[index].ctl_index); |
201 | debug("%s - cap of the slot: %x\n" , __func__, hpc_ptr->slots[index].slot_cap); |
202 | } |
203 | |
204 | for (index = 0; index < hpc_ptr->bus_count; index++) |
205 | debug("%s - bus# of each bus controlled by this ctlr: %x\n" , __func__, hpc_ptr->buses[index].bus_num); |
206 | |
207 | debug("%s - type of hpc: %x\n" , __func__, hpc_ptr->ctlr_type); |
208 | switch (hpc_ptr->ctlr_type) { |
209 | case 1: |
210 | debug("%s - bus: %x\n" , __func__, hpc_ptr->u.pci_ctlr.bus); |
211 | debug("%s - dev_fun: %x\n" , __func__, hpc_ptr->u.pci_ctlr.dev_fun); |
212 | debug("%s - irq: %x\n" , __func__, hpc_ptr->irq); |
213 | break; |
214 | |
215 | case 0: |
216 | debug("%s - io_start: %x\n" , __func__, hpc_ptr->u.isa_ctlr.io_start); |
217 | debug("%s - io_end: %x\n" , __func__, hpc_ptr->u.isa_ctlr.io_end); |
218 | debug("%s - irq: %x\n" , __func__, hpc_ptr->irq); |
219 | break; |
220 | |
221 | case 2: |
222 | case 4: |
223 | debug("%s - wpegbbar: %lx\n" , __func__, hpc_ptr->u.wpeg_ctlr.wpegbbar); |
224 | debug("%s - i2c_addr: %x\n" , __func__, hpc_ptr->u.wpeg_ctlr.i2c_addr); |
225 | debug("%s - irq: %x\n" , __func__, hpc_ptr->irq); |
226 | break; |
227 | } |
228 | } |
229 | } |
230 | |
231 | int __init ibmphp_access_ebda(void) |
232 | { |
233 | u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz; |
234 | u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base; |
235 | int rc = 0; |
236 | |
237 | |
238 | rio_complete = 0; |
239 | hs_complete = 0; |
240 | |
241 | io_mem = ioremap(offset: (0x40 << 4) + 0x0e, size: 2); |
242 | if (!io_mem) |
243 | return -ENOMEM; |
244 | ebda_seg = readw(addr: io_mem); |
245 | iounmap(addr: io_mem); |
246 | debug("returned ebda segment: %x\n" , ebda_seg); |
247 | |
248 | io_mem = ioremap(offset: ebda_seg<<4, size: 1); |
249 | if (!io_mem) |
250 | return -ENOMEM; |
251 | ebda_sz = readb(addr: io_mem); |
252 | iounmap(addr: io_mem); |
253 | debug("ebda size: %d(KiB)\n" , ebda_sz); |
254 | if (ebda_sz == 0) |
255 | return -ENOMEM; |
256 | |
257 | io_mem = ioremap(offset: ebda_seg<<4, size: (ebda_sz * 1024)); |
258 | if (!io_mem) |
259 | return -ENOMEM; |
260 | next_offset = 0x180; |
261 | |
262 | for (;;) { |
263 | offset = next_offset; |
264 | |
265 | /* Make sure what we read is still in the mapped section */ |
266 | if (WARN(offset > (ebda_sz * 1024 - 4), |
267 | "ibmphp_ebda: next read is beyond ebda_sz\n" )) |
268 | break; |
269 | |
270 | next_offset = readw(addr: io_mem + offset); /* offset of next blk */ |
271 | |
272 | offset += 2; |
273 | if (next_offset == 0) /* 0 indicate it's last blk */ |
274 | break; |
275 | blk_id = readw(addr: io_mem + offset); /* this blk id */ |
276 | |
277 | offset += 2; |
278 | /* check if it is hot swap block or rio block */ |
279 | if (blk_id != 0x4853 && blk_id != 0x4752) |
280 | continue; |
281 | /* found hs table */ |
282 | if (blk_id == 0x4853) { |
283 | debug("now enter hot swap block---\n" ); |
284 | debug("hot blk id: %x\n" , blk_id); |
285 | format = readb(addr: io_mem + offset); |
286 | |
287 | offset += 1; |
288 | if (format != 4) |
289 | goto error_nodev; |
290 | debug("hot blk format: %x\n" , format); |
291 | /* hot swap sub blk */ |
292 | base = offset; |
293 | |
294 | sub_addr = base; |
295 | re = readw(addr: io_mem + sub_addr); /* next sub blk */ |
296 | |
297 | sub_addr += 2; |
298 | rc_id = readw(addr: io_mem + sub_addr); /* sub blk id */ |
299 | |
300 | sub_addr += 2; |
301 | if (rc_id != 0x5243) |
302 | goto error_nodev; |
303 | /* rc sub blk signature */ |
304 | num_ctlrs = readb(addr: io_mem + sub_addr); |
305 | |
306 | sub_addr += 1; |
307 | hpc_list_ptr = alloc_ebda_hpc_list(); |
308 | if (!hpc_list_ptr) { |
309 | rc = -ENOMEM; |
310 | goto out; |
311 | } |
312 | hpc_list_ptr->format = format; |
313 | hpc_list_ptr->num_ctlrs = num_ctlrs; |
314 | hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */ |
315 | debug("info about hpc descriptor---\n" ); |
316 | debug("hot blk format: %x\n" , format); |
317 | debug("num of controller: %x\n" , num_ctlrs); |
318 | debug("offset of hpc data structure entries: %x\n " , sub_addr); |
319 | |
320 | sub_addr = base + re; /* re sub blk */ |
321 | /* FIXME: rc is never used/checked */ |
322 | rc = readw(addr: io_mem + sub_addr); /* next sub blk */ |
323 | |
324 | sub_addr += 2; |
325 | re_id = readw(addr: io_mem + sub_addr); /* sub blk id */ |
326 | |
327 | sub_addr += 2; |
328 | if (re_id != 0x5245) |
329 | goto error_nodev; |
330 | |
331 | /* signature of re */ |
332 | num_entries = readw(addr: io_mem + sub_addr); |
333 | |
334 | sub_addr += 2; /* offset of RSRC_ENTRIES blk */ |
335 | rsrc_list_ptr = alloc_ebda_rsrc_list(); |
336 | if (!rsrc_list_ptr) { |
337 | rc = -ENOMEM; |
338 | goto out; |
339 | } |
340 | rsrc_list_ptr->format = format; |
341 | rsrc_list_ptr->num_entries = num_entries; |
342 | rsrc_list_ptr->phys_addr = sub_addr; |
343 | |
344 | debug("info about rsrc descriptor---\n" ); |
345 | debug("format: %x\n" , format); |
346 | debug("num of rsrc: %x\n" , num_entries); |
347 | debug("offset of rsrc data structure entries: %x\n " , sub_addr); |
348 | |
349 | hs_complete = 1; |
350 | } else { |
351 | /* found rio table, blk_id == 0x4752 */ |
352 | debug("now enter io table ---\n" ); |
353 | debug("rio blk id: %x\n" , blk_id); |
354 | |
355 | rio_table_ptr = kzalloc(size: sizeof(struct rio_table_hdr), GFP_KERNEL); |
356 | if (!rio_table_ptr) { |
357 | rc = -ENOMEM; |
358 | goto out; |
359 | } |
360 | rio_table_ptr->ver_num = readb(addr: io_mem + offset); |
361 | rio_table_ptr->scal_count = readb(addr: io_mem + offset + 1); |
362 | rio_table_ptr->riodev_count = readb(addr: io_mem + offset + 2); |
363 | rio_table_ptr->offset = offset + 3 ; |
364 | |
365 | debug("info about rio table hdr ---\n" ); |
366 | debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n " , |
367 | rio_table_ptr->ver_num, rio_table_ptr->scal_count, |
368 | rio_table_ptr->riodev_count, rio_table_ptr->offset); |
369 | |
370 | rio_complete = 1; |
371 | } |
372 | } |
373 | |
374 | if (!hs_complete && !rio_complete) |
375 | goto error_nodev; |
376 | |
377 | if (rio_table_ptr) { |
378 | if (rio_complete && rio_table_ptr->ver_num == 3) { |
379 | rc = ebda_rio_table(); |
380 | if (rc) |
381 | goto out; |
382 | } |
383 | } |
384 | rc = ebda_rsrc_controller(); |
385 | if (rc) |
386 | goto out; |
387 | |
388 | rc = ebda_rsrc_rsrc(); |
389 | goto out; |
390 | error_nodev: |
391 | rc = -ENODEV; |
392 | out: |
393 | iounmap(addr: io_mem); |
394 | return rc; |
395 | } |
396 | |
397 | /* |
398 | * map info of scalability details and rio details from physical address |
399 | */ |
400 | static int __init ebda_rio_table(void) |
401 | { |
402 | u16 offset; |
403 | u8 i; |
404 | struct rio_detail *rio_detail_ptr; |
405 | |
406 | offset = rio_table_ptr->offset; |
407 | offset += 12 * rio_table_ptr->scal_count; |
408 | |
409 | // we do concern about rio details |
410 | for (i = 0; i < rio_table_ptr->riodev_count; i++) { |
411 | rio_detail_ptr = kzalloc(size: sizeof(struct rio_detail), GFP_KERNEL); |
412 | if (!rio_detail_ptr) |
413 | return -ENOMEM; |
414 | rio_detail_ptr->rio_node_id = readb(addr: io_mem + offset); |
415 | rio_detail_ptr->bbar = readl(addr: io_mem + offset + 1); |
416 | rio_detail_ptr->rio_type = readb(addr: io_mem + offset + 5); |
417 | rio_detail_ptr->owner_id = readb(addr: io_mem + offset + 6); |
418 | rio_detail_ptr->port0_node_connect = readb(addr: io_mem + offset + 7); |
419 | rio_detail_ptr->port0_port_connect = readb(addr: io_mem + offset + 8); |
420 | rio_detail_ptr->port1_node_connect = readb(addr: io_mem + offset + 9); |
421 | rio_detail_ptr->port1_port_connect = readb(addr: io_mem + offset + 10); |
422 | rio_detail_ptr->first_slot_num = readb(addr: io_mem + offset + 11); |
423 | rio_detail_ptr->status = readb(addr: io_mem + offset + 12); |
424 | rio_detail_ptr->wpindex = readb(addr: io_mem + offset + 13); |
425 | rio_detail_ptr->chassis_num = readb(addr: io_mem + offset + 14); |
426 | // debug("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status); |
427 | //create linked list of chassis |
428 | if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5) |
429 | list_add(new: &rio_detail_ptr->rio_detail_list, head: &rio_vg_head); |
430 | //create linked list of expansion box |
431 | else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7) |
432 | list_add(new: &rio_detail_ptr->rio_detail_list, head: &rio_lo_head); |
433 | else |
434 | // not in my concern |
435 | kfree(objp: rio_detail_ptr); |
436 | offset += 15; |
437 | } |
438 | print_lo_info(); |
439 | print_vg_info(); |
440 | return 0; |
441 | } |
442 | |
443 | /* |
444 | * reorganizing linked list of chassis |
445 | */ |
446 | static struct opt_rio *search_opt_vg(u8 chassis_num) |
447 | { |
448 | struct opt_rio *ptr; |
449 | list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { |
450 | if (ptr->chassis_num == chassis_num) |
451 | return ptr; |
452 | } |
453 | return NULL; |
454 | } |
455 | |
456 | static int __init combine_wpg_for_chassis(void) |
457 | { |
458 | struct opt_rio *opt_rio_ptr = NULL; |
459 | struct rio_detail *rio_detail_ptr = NULL; |
460 | |
461 | list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) { |
462 | opt_rio_ptr = search_opt_vg(chassis_num: rio_detail_ptr->chassis_num); |
463 | if (!opt_rio_ptr) { |
464 | opt_rio_ptr = kzalloc(size: sizeof(struct opt_rio), GFP_KERNEL); |
465 | if (!opt_rio_ptr) |
466 | return -ENOMEM; |
467 | opt_rio_ptr->rio_type = rio_detail_ptr->rio_type; |
468 | opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num; |
469 | opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num; |
470 | opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num; |
471 | list_add(new: &opt_rio_ptr->opt_rio_list, head: &opt_vg_head); |
472 | } else { |
473 | opt_rio_ptr->first_slot_num = min(opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num); |
474 | opt_rio_ptr->middle_num = max(opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num); |
475 | } |
476 | } |
477 | print_opt_vg(); |
478 | return 0; |
479 | } |
480 | |
481 | /* |
482 | * reorganizing linked list of expansion box |
483 | */ |
484 | static struct opt_rio_lo *search_opt_lo(u8 chassis_num) |
485 | { |
486 | struct opt_rio_lo *ptr; |
487 | list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) { |
488 | if (ptr->chassis_num == chassis_num) |
489 | return ptr; |
490 | } |
491 | return NULL; |
492 | } |
493 | |
494 | static int combine_wpg_for_expansion(void) |
495 | { |
496 | struct opt_rio_lo *opt_rio_lo_ptr = NULL; |
497 | struct rio_detail *rio_detail_ptr = NULL; |
498 | |
499 | list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) { |
500 | opt_rio_lo_ptr = search_opt_lo(chassis_num: rio_detail_ptr->chassis_num); |
501 | if (!opt_rio_lo_ptr) { |
502 | opt_rio_lo_ptr = kzalloc(size: sizeof(struct opt_rio_lo), GFP_KERNEL); |
503 | if (!opt_rio_lo_ptr) |
504 | return -ENOMEM; |
505 | opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type; |
506 | opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num; |
507 | opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num; |
508 | opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num; |
509 | opt_rio_lo_ptr->pack_count = 1; |
510 | |
511 | list_add(new: &opt_rio_lo_ptr->opt_rio_lo_list, head: &opt_lo_head); |
512 | } else { |
513 | opt_rio_lo_ptr->first_slot_num = min(opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num); |
514 | opt_rio_lo_ptr->middle_num = max(opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num); |
515 | opt_rio_lo_ptr->pack_count = 2; |
516 | } |
517 | } |
518 | return 0; |
519 | } |
520 | |
521 | |
522 | /* Since we don't know the max slot number per each chassis, hence go |
523 | * through the list of all chassis to find out the range |
524 | * Arguments: slot_num, 1st slot number of the chassis we think we are on, |
525 | * var (0 = chassis, 1 = expansion box) |
526 | */ |
527 | static int first_slot_num(u8 slot_num, u8 first_slot, u8 var) |
528 | { |
529 | struct opt_rio *opt_vg_ptr = NULL; |
530 | struct opt_rio_lo *opt_lo_ptr = NULL; |
531 | int rc = 0; |
532 | |
533 | if (!var) { |
534 | list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) { |
535 | if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) { |
536 | rc = -ENODEV; |
537 | break; |
538 | } |
539 | } |
540 | } else { |
541 | list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) { |
542 | if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) { |
543 | rc = -ENODEV; |
544 | break; |
545 | } |
546 | } |
547 | } |
548 | return rc; |
549 | } |
550 | |
551 | static struct opt_rio_lo *find_rxe_num(u8 slot_num) |
552 | { |
553 | struct opt_rio_lo *opt_lo_ptr; |
554 | |
555 | list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) { |
556 | //check to see if this slot_num belongs to expansion box |
557 | if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num(slot_num, first_slot: opt_lo_ptr->first_slot_num, var: 1))) |
558 | return opt_lo_ptr; |
559 | } |
560 | return NULL; |
561 | } |
562 | |
563 | static struct opt_rio *find_chassis_num(u8 slot_num) |
564 | { |
565 | struct opt_rio *opt_vg_ptr; |
566 | |
567 | list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) { |
568 | //check to see if this slot_num belongs to chassis |
569 | if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num(slot_num, first_slot: opt_vg_ptr->first_slot_num, var: 0))) |
570 | return opt_vg_ptr; |
571 | } |
572 | return NULL; |
573 | } |
574 | |
575 | /* This routine will find out how many slots are in the chassis, so that |
576 | * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc |
577 | */ |
578 | static u8 calculate_first_slot(u8 slot_num) |
579 | { |
580 | u8 first_slot = 1; |
581 | struct slot *slot_cur; |
582 | |
583 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
584 | if (slot_cur->ctrl) { |
585 | if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num)) |
586 | first_slot = slot_cur->ctrl->ending_slot_num; |
587 | } |
588 | } |
589 | return first_slot + 1; |
590 | |
591 | } |
592 | |
593 | #define SLOT_NAME_SIZE 30 |
594 | |
595 | static char *create_file_name(struct slot *slot_cur) |
596 | { |
597 | struct opt_rio *opt_vg_ptr = NULL; |
598 | struct opt_rio_lo *opt_lo_ptr = NULL; |
599 | static char str[SLOT_NAME_SIZE]; |
600 | int which = 0; /* rxe = 1, chassis = 0 */ |
601 | u8 number = 1; /* either chassis or rxe # */ |
602 | u8 first_slot = 1; |
603 | u8 slot_num; |
604 | u8 flag = 0; |
605 | |
606 | if (!slot_cur) { |
607 | err("Structure passed is empty\n" ); |
608 | return NULL; |
609 | } |
610 | |
611 | slot_num = slot_cur->number; |
612 | |
613 | memset(str, 0, sizeof(str)); |
614 | |
615 | if (rio_table_ptr) { |
616 | if (rio_table_ptr->ver_num == 3) { |
617 | opt_vg_ptr = find_chassis_num(slot_num); |
618 | opt_lo_ptr = find_rxe_num(slot_num); |
619 | } |
620 | } |
621 | if (opt_vg_ptr) { |
622 | if (opt_lo_ptr) { |
623 | if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) { |
624 | number = opt_lo_ptr->chassis_num; |
625 | first_slot = opt_lo_ptr->first_slot_num; |
626 | which = 1; /* it is RXE */ |
627 | } else { |
628 | first_slot = opt_vg_ptr->first_slot_num; |
629 | number = opt_vg_ptr->chassis_num; |
630 | which = 0; |
631 | } |
632 | } else { |
633 | first_slot = opt_vg_ptr->first_slot_num; |
634 | number = opt_vg_ptr->chassis_num; |
635 | which = 0; |
636 | } |
637 | ++flag; |
638 | } else if (opt_lo_ptr) { |
639 | number = opt_lo_ptr->chassis_num; |
640 | first_slot = opt_lo_ptr->first_slot_num; |
641 | which = 1; |
642 | ++flag; |
643 | } else if (rio_table_ptr) { |
644 | if (rio_table_ptr->ver_num == 3) { |
645 | /* if both NULL and we DO have correct RIO table in BIOS */ |
646 | return NULL; |
647 | } |
648 | } |
649 | if (!flag) { |
650 | if (slot_cur->ctrl->ctlr_type == 4) { |
651 | first_slot = calculate_first_slot(slot_num); |
652 | which = 1; |
653 | } else { |
654 | which = 0; |
655 | } |
656 | } |
657 | |
658 | sprintf(buf: str, fmt: "%s%dslot%d" , |
659 | which == 0 ? "chassis" : "rxe" , |
660 | number, slot_num - first_slot + 1); |
661 | return str; |
662 | } |
663 | |
664 | static int fillslotinfo(struct hotplug_slot *hotplug_slot) |
665 | { |
666 | struct slot *slot; |
667 | int rc = 0; |
668 | |
669 | slot = to_slot(hotplug_slot); |
670 | rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL); |
671 | return rc; |
672 | } |
673 | |
674 | static struct pci_driver ibmphp_driver; |
675 | |
676 | /* |
677 | * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of |
678 | * each hpc from physical address to a list of hot plug controllers based on |
679 | * hpc descriptors. |
680 | */ |
681 | static int __init ebda_rsrc_controller(void) |
682 | { |
683 | u16 addr, addr_slot, addr_bus; |
684 | u8 ctlr_id, temp, bus_index; |
685 | u16 ctlr, slot, bus; |
686 | u16 slot_num, bus_num, index; |
687 | struct controller *hpc_ptr; |
688 | struct ebda_hpc_bus *bus_ptr; |
689 | struct ebda_hpc_slot *slot_ptr; |
690 | struct bus_info *bus_info_ptr1, *bus_info_ptr2; |
691 | int rc; |
692 | struct slot *tmp_slot; |
693 | char name[SLOT_NAME_SIZE]; |
694 | |
695 | addr = hpc_list_ptr->phys_addr; |
696 | for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) { |
697 | bus_index = 1; |
698 | ctlr_id = readb(addr: io_mem + addr); |
699 | addr += 1; |
700 | slot_num = readb(addr: io_mem + addr); |
701 | |
702 | addr += 1; |
703 | addr_slot = addr; /* offset of slot structure */ |
704 | addr += (slot_num * 4); |
705 | |
706 | bus_num = readb(addr: io_mem + addr); |
707 | |
708 | addr += 1; |
709 | addr_bus = addr; /* offset of bus */ |
710 | addr += (bus_num * 9); /* offset of ctlr_type */ |
711 | temp = readb(addr: io_mem + addr); |
712 | |
713 | addr += 1; |
714 | /* init hpc structure */ |
715 | hpc_ptr = alloc_ebda_hpc(slot_count: slot_num, bus_count: bus_num); |
716 | if (!hpc_ptr) { |
717 | return -ENOMEM; |
718 | } |
719 | hpc_ptr->ctlr_id = ctlr_id; |
720 | hpc_ptr->ctlr_relative_id = ctlr; |
721 | hpc_ptr->slot_count = slot_num; |
722 | hpc_ptr->bus_count = bus_num; |
723 | debug("now enter ctlr data structure ---\n" ); |
724 | debug("ctlr id: %x\n" , ctlr_id); |
725 | debug("ctlr_relative_id: %x\n" , hpc_ptr->ctlr_relative_id); |
726 | debug("count of slots controlled by this ctlr: %x\n" , slot_num); |
727 | debug("count of buses controlled by this ctlr: %x\n" , bus_num); |
728 | |
729 | /* init slot structure, fetch slot, bus, cap... */ |
730 | slot_ptr = hpc_ptr->slots; |
731 | for (slot = 0; slot < slot_num; slot++) { |
732 | slot_ptr->slot_num = readb(addr: io_mem + addr_slot); |
733 | slot_ptr->slot_bus_num = readb(addr: io_mem + addr_slot + slot_num); |
734 | slot_ptr->ctl_index = readb(addr: io_mem + addr_slot + 2*slot_num); |
735 | slot_ptr->slot_cap = readb(addr: io_mem + addr_slot + 3*slot_num); |
736 | |
737 | // create bus_info lined list --- if only one slot per bus: slot_min = slot_max |
738 | |
739 | bus_info_ptr2 = ibmphp_find_same_bus_num(slot_ptr->slot_bus_num); |
740 | if (!bus_info_ptr2) { |
741 | bus_info_ptr1 = kzalloc(size: sizeof(struct bus_info), GFP_KERNEL); |
742 | if (!bus_info_ptr1) { |
743 | rc = -ENOMEM; |
744 | goto error_no_slot; |
745 | } |
746 | bus_info_ptr1->slot_min = slot_ptr->slot_num; |
747 | bus_info_ptr1->slot_max = slot_ptr->slot_num; |
748 | bus_info_ptr1->slot_count += 1; |
749 | bus_info_ptr1->busno = slot_ptr->slot_bus_num; |
750 | bus_info_ptr1->index = bus_index++; |
751 | bus_info_ptr1->current_speed = 0xff; |
752 | bus_info_ptr1->current_bus_mode = 0xff; |
753 | |
754 | bus_info_ptr1->controller_id = hpc_ptr->ctlr_id; |
755 | |
756 | list_add_tail(new: &bus_info_ptr1->bus_info_list, head: &bus_info_head); |
757 | |
758 | } else { |
759 | bus_info_ptr2->slot_min = min(bus_info_ptr2->slot_min, slot_ptr->slot_num); |
760 | bus_info_ptr2->slot_max = max(bus_info_ptr2->slot_max, slot_ptr->slot_num); |
761 | bus_info_ptr2->slot_count += 1; |
762 | |
763 | } |
764 | |
765 | // end of creating the bus_info linked list |
766 | |
767 | slot_ptr++; |
768 | addr_slot += 1; |
769 | } |
770 | |
771 | /* init bus structure */ |
772 | bus_ptr = hpc_ptr->buses; |
773 | for (bus = 0; bus < bus_num; bus++) { |
774 | bus_ptr->bus_num = readb(addr: io_mem + addr_bus + bus); |
775 | bus_ptr->slots_at_33_conv = readb(addr: io_mem + addr_bus + bus_num + 8 * bus); |
776 | bus_ptr->slots_at_66_conv = readb(addr: io_mem + addr_bus + bus_num + 8 * bus + 1); |
777 | |
778 | bus_ptr->slots_at_66_pcix = readb(addr: io_mem + addr_bus + bus_num + 8 * bus + 2); |
779 | |
780 | bus_ptr->slots_at_100_pcix = readb(addr: io_mem + addr_bus + bus_num + 8 * bus + 3); |
781 | |
782 | bus_ptr->slots_at_133_pcix = readb(addr: io_mem + addr_bus + bus_num + 8 * bus + 4); |
783 | |
784 | bus_info_ptr2 = ibmphp_find_same_bus_num(bus_ptr->bus_num); |
785 | if (bus_info_ptr2) { |
786 | bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv; |
787 | bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv; |
788 | bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix; |
789 | bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix; |
790 | bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix; |
791 | } |
792 | bus_ptr++; |
793 | } |
794 | |
795 | hpc_ptr->ctlr_type = temp; |
796 | |
797 | switch (hpc_ptr->ctlr_type) { |
798 | case 1: |
799 | hpc_ptr->u.pci_ctlr.bus = readb(addr: io_mem + addr); |
800 | hpc_ptr->u.pci_ctlr.dev_fun = readb(addr: io_mem + addr + 1); |
801 | hpc_ptr->irq = readb(addr: io_mem + addr + 2); |
802 | addr += 3; |
803 | debug("ctrl bus = %x, ctlr devfun = %x, irq = %x\n" , |
804 | hpc_ptr->u.pci_ctlr.bus, |
805 | hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq); |
806 | break; |
807 | |
808 | case 0: |
809 | hpc_ptr->u.isa_ctlr.io_start = readw(addr: io_mem + addr); |
810 | hpc_ptr->u.isa_ctlr.io_end = readw(addr: io_mem + addr + 2); |
811 | if (!request_region(hpc_ptr->u.isa_ctlr.io_start, |
812 | (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1), |
813 | "ibmphp" )) { |
814 | rc = -ENODEV; |
815 | goto error_no_slot; |
816 | } |
817 | hpc_ptr->irq = readb(addr: io_mem + addr + 4); |
818 | addr += 5; |
819 | break; |
820 | |
821 | case 2: |
822 | case 4: |
823 | hpc_ptr->u.wpeg_ctlr.wpegbbar = readl(addr: io_mem + addr); |
824 | hpc_ptr->u.wpeg_ctlr.i2c_addr = readb(addr: io_mem + addr + 4); |
825 | hpc_ptr->irq = readb(addr: io_mem + addr + 5); |
826 | addr += 6; |
827 | break; |
828 | default: |
829 | rc = -ENODEV; |
830 | goto error_no_slot; |
831 | } |
832 | |
833 | //reorganize chassis' linked list |
834 | combine_wpg_for_chassis(); |
835 | combine_wpg_for_expansion(); |
836 | hpc_ptr->revision = 0xff; |
837 | hpc_ptr->options = 0xff; |
838 | hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num; |
839 | hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num; |
840 | |
841 | // register slots with hpc core as well as create linked list of ibm slot |
842 | for (index = 0; index < hpc_ptr->slot_count; index++) { |
843 | tmp_slot = kzalloc(size: sizeof(*tmp_slot), GFP_KERNEL); |
844 | if (!tmp_slot) { |
845 | rc = -ENOMEM; |
846 | goto error_no_slot; |
847 | } |
848 | |
849 | tmp_slot->flag = 1; |
850 | |
851 | tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap; |
852 | if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX) |
853 | tmp_slot->supported_speed = 3; |
854 | else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX) |
855 | tmp_slot->supported_speed = 2; |
856 | else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX) |
857 | tmp_slot->supported_speed = 1; |
858 | |
859 | if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP) |
860 | tmp_slot->supported_bus_mode = 1; |
861 | else |
862 | tmp_slot->supported_bus_mode = 0; |
863 | |
864 | |
865 | tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num; |
866 | |
867 | bus_info_ptr1 = ibmphp_find_same_bus_num(hpc_ptr->slots[index].slot_bus_num); |
868 | if (!bus_info_ptr1) { |
869 | rc = -ENODEV; |
870 | goto error; |
871 | } |
872 | tmp_slot->bus_on = bus_info_ptr1; |
873 | bus_info_ptr1 = NULL; |
874 | tmp_slot->ctrl = hpc_ptr; |
875 | |
876 | tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index; |
877 | tmp_slot->number = hpc_ptr->slots[index].slot_num; |
878 | |
879 | rc = fillslotinfo(hotplug_slot: &tmp_slot->hotplug_slot); |
880 | if (rc) |
881 | goto error; |
882 | |
883 | rc = ibmphp_init_devno(&tmp_slot); |
884 | if (rc) |
885 | goto error; |
886 | tmp_slot->hotplug_slot.ops = &ibmphp_hotplug_slot_ops; |
887 | |
888 | // end of registering ibm slot with hotplug core |
889 | |
890 | list_add(new: &tmp_slot->ibm_slot_list, head: &ibmphp_slot_head); |
891 | } |
892 | |
893 | print_bus_info(); |
894 | list_add(new: &hpc_ptr->ebda_hpc_list, head: &ebda_hpc_head); |
895 | |
896 | } /* each hpc */ |
897 | |
898 | list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) { |
899 | snprintf(buf: name, SLOT_NAME_SIZE, fmt: "%s" , create_file_name(slot_cur: tmp_slot)); |
900 | pci_hp_register(&tmp_slot->hotplug_slot, |
901 | pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name); |
902 | } |
903 | |
904 | print_ebda_hpc(); |
905 | print_ibm_slot(); |
906 | return 0; |
907 | |
908 | error: |
909 | kfree(objp: tmp_slot); |
910 | error_no_slot: |
911 | free_ebda_hpc(controller: hpc_ptr); |
912 | return rc; |
913 | } |
914 | |
915 | /* |
916 | * map info (bus, devfun, start addr, end addr..) of i/o, memory, |
917 | * pfm from the physical addr to a list of resource. |
918 | */ |
919 | static int __init ebda_rsrc_rsrc(void) |
920 | { |
921 | u16 addr; |
922 | short rsrc; |
923 | u8 type, rsrc_type; |
924 | struct ebda_pci_rsrc *rsrc_ptr; |
925 | |
926 | addr = rsrc_list_ptr->phys_addr; |
927 | debug("now entering rsrc land\n" ); |
928 | debug("offset of rsrc: %x\n" , rsrc_list_ptr->phys_addr); |
929 | |
930 | for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) { |
931 | type = readb(addr: io_mem + addr); |
932 | |
933 | addr += 1; |
934 | rsrc_type = type & EBDA_RSRC_TYPE_MASK; |
935 | |
936 | if (rsrc_type == EBDA_IO_RSRC_TYPE) { |
937 | rsrc_ptr = alloc_ebda_pci_rsrc(); |
938 | if (!rsrc_ptr) { |
939 | iounmap(addr: io_mem); |
940 | return -ENOMEM; |
941 | } |
942 | rsrc_ptr->rsrc_type = type; |
943 | |
944 | rsrc_ptr->bus_num = readb(addr: io_mem + addr); |
945 | rsrc_ptr->dev_fun = readb(addr: io_mem + addr + 1); |
946 | rsrc_ptr->start_addr = readw(addr: io_mem + addr + 2); |
947 | rsrc_ptr->end_addr = readw(addr: io_mem + addr + 4); |
948 | addr += 6; |
949 | |
950 | debug("rsrc from io type ----\n" ); |
951 | debug("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n" , |
952 | rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr); |
953 | |
954 | list_add(new: &rsrc_ptr->ebda_pci_rsrc_list, head: &ibmphp_ebda_pci_rsrc_head); |
955 | } |
956 | |
957 | if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) { |
958 | rsrc_ptr = alloc_ebda_pci_rsrc(); |
959 | if (!rsrc_ptr) { |
960 | iounmap(addr: io_mem); |
961 | return -ENOMEM; |
962 | } |
963 | rsrc_ptr->rsrc_type = type; |
964 | |
965 | rsrc_ptr->bus_num = readb(addr: io_mem + addr); |
966 | rsrc_ptr->dev_fun = readb(addr: io_mem + addr + 1); |
967 | rsrc_ptr->start_addr = readl(addr: io_mem + addr + 2); |
968 | rsrc_ptr->end_addr = readl(addr: io_mem + addr + 6); |
969 | addr += 10; |
970 | |
971 | debug("rsrc from mem or pfm ---\n" ); |
972 | debug("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n" , |
973 | rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr); |
974 | |
975 | list_add(new: &rsrc_ptr->ebda_pci_rsrc_list, head: &ibmphp_ebda_pci_rsrc_head); |
976 | } |
977 | } |
978 | kfree(objp: rsrc_list_ptr); |
979 | rsrc_list_ptr = NULL; |
980 | print_ebda_pci_rsrc(); |
981 | return 0; |
982 | } |
983 | |
984 | u16 ibmphp_get_total_controllers(void) |
985 | { |
986 | return hpc_list_ptr->num_ctlrs; |
987 | } |
988 | |
989 | struct slot *ibmphp_get_slot_from_physical_num(u8 physical_num) |
990 | { |
991 | struct slot *slot; |
992 | |
993 | list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) { |
994 | if (slot->number == physical_num) |
995 | return slot; |
996 | } |
997 | return NULL; |
998 | } |
999 | |
1000 | /* To find: |
1001 | * - the smallest slot number |
1002 | * - the largest slot number |
1003 | * - the total number of the slots based on each bus |
1004 | * (if only one slot per bus slot_min = slot_max ) |
1005 | */ |
1006 | struct bus_info *ibmphp_find_same_bus_num(u32 num) |
1007 | { |
1008 | struct bus_info *ptr; |
1009 | |
1010 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
1011 | if (ptr->busno == num) |
1012 | return ptr; |
1013 | } |
1014 | return NULL; |
1015 | } |
1016 | |
1017 | /* Finding relative bus number, in order to map corresponding |
1018 | * bus register |
1019 | */ |
1020 | int ibmphp_get_bus_index(u8 num) |
1021 | { |
1022 | struct bus_info *ptr; |
1023 | |
1024 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
1025 | if (ptr->busno == num) |
1026 | return ptr->index; |
1027 | } |
1028 | return -ENODEV; |
1029 | } |
1030 | |
1031 | void ibmphp_free_bus_info_queue(void) |
1032 | { |
1033 | struct bus_info *bus_info, *next; |
1034 | |
1035 | list_for_each_entry_safe(bus_info, next, &bus_info_head, |
1036 | bus_info_list) { |
1037 | kfree (objp: bus_info); |
1038 | } |
1039 | } |
1040 | |
1041 | void ibmphp_free_ebda_hpc_queue(void) |
1042 | { |
1043 | struct controller *controller = NULL, *next; |
1044 | int pci_flag = 0; |
1045 | |
1046 | list_for_each_entry_safe(controller, next, &ebda_hpc_head, |
1047 | ebda_hpc_list) { |
1048 | if (controller->ctlr_type == 0) |
1049 | release_region(controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1)); |
1050 | else if ((controller->ctlr_type == 1) && (!pci_flag)) { |
1051 | ++pci_flag; |
1052 | pci_unregister_driver(dev: &ibmphp_driver); |
1053 | } |
1054 | free_ebda_hpc(controller); |
1055 | } |
1056 | } |
1057 | |
1058 | void ibmphp_free_ebda_pci_rsrc_queue(void) |
1059 | { |
1060 | struct ebda_pci_rsrc *resource, *next; |
1061 | |
1062 | list_for_each_entry_safe(resource, next, &ibmphp_ebda_pci_rsrc_head, |
1063 | ebda_pci_rsrc_list) { |
1064 | kfree (objp: resource); |
1065 | resource = NULL; |
1066 | } |
1067 | } |
1068 | |
1069 | static const struct pci_device_id id_table[] = { |
1070 | { |
1071 | .vendor = PCI_VENDOR_ID_IBM, |
1072 | .device = HPC_DEVICE_ID, |
1073 | .subvendor = PCI_VENDOR_ID_IBM, |
1074 | .subdevice = HPC_SUBSYSTEM_ID, |
1075 | .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), |
1076 | }, {} |
1077 | }; |
1078 | |
1079 | MODULE_DEVICE_TABLE(pci, id_table); |
1080 | |
1081 | static int ibmphp_probe(struct pci_dev *, const struct pci_device_id *); |
1082 | static struct pci_driver ibmphp_driver = { |
1083 | .name = "ibmphp" , |
1084 | .id_table = id_table, |
1085 | .probe = ibmphp_probe, |
1086 | }; |
1087 | |
1088 | int ibmphp_register_pci(void) |
1089 | { |
1090 | struct controller *ctrl; |
1091 | int rc = 0; |
1092 | |
1093 | list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) { |
1094 | if (ctrl->ctlr_type == 1) { |
1095 | rc = pci_register_driver(&ibmphp_driver); |
1096 | break; |
1097 | } |
1098 | } |
1099 | return rc; |
1100 | } |
1101 | static int ibmphp_probe(struct pci_dev *dev, const struct pci_device_id *ids) |
1102 | { |
1103 | struct controller *ctrl; |
1104 | |
1105 | debug("inside ibmphp_probe\n" ); |
1106 | |
1107 | list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) { |
1108 | if (ctrl->ctlr_type == 1) { |
1109 | if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) { |
1110 | ctrl->ctrl_dev = dev; |
1111 | debug("found device!!!\n" ); |
1112 | debug("dev->device = %x, dev->subsystem_device = %x\n" , dev->device, dev->subsystem_device); |
1113 | return 0; |
1114 | } |
1115 | } |
1116 | } |
1117 | return -ENODEV; |
1118 | } |
1119 | |