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1da177e4 LT |
1 | /* |
2 | * IBM Hot Plug Controller Driver | |
3 | * | |
4 | * Written By: Tong Yu, IBM Corporation | |
5 | * | |
6 | * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com) | |
7 | * Copyright (C) 2001-2003 IBM Corp. | |
8 | * | |
9 | * All rights reserved. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or (at | |
14 | * your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
19 | * NON INFRINGEMENT. See the GNU General Public License for more | |
20 | * details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | * | |
26 | * Send feedback to <gregkh@us.ibm.com> | |
27 | * | |
28 | */ | |
29 | ||
30 | #include <linux/module.h> | |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/mm.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/pci.h> | |
35 | #include <linux/list.h> | |
36 | #include <linux/init.h> | |
37 | #include "ibmphp.h" | |
38 | ||
39 | /* | |
40 | * POST builds data blocks(in this data block definition, a char-1 | |
41 | * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended | |
42 | * BIOS Data Area which describe the configuration of the hot-plug | |
43 | * controllers and resources used by the PCI Hot-Plug devices. | |
44 | * | |
45 | * This file walks EBDA, maps data block from physical addr, | |
46 | * reconstruct linked lists about all system resource(MEM, PFM, IO) | |
47 | * already assigned by POST, as well as linked lists about hot plug | |
48 | * controllers (ctlr#, slot#, bus&slot features...) | |
49 | */ | |
50 | ||
51 | /* Global lists */ | |
52 | LIST_HEAD (ibmphp_ebda_pci_rsrc_head); | |
53 | LIST_HEAD (ibmphp_slot_head); | |
54 | ||
55 | /* Local variables */ | |
56 | static struct ebda_hpc_list *hpc_list_ptr; | |
57 | static struct ebda_rsrc_list *rsrc_list_ptr; | |
58 | static struct rio_table_hdr *rio_table_ptr = NULL; | |
59 | static LIST_HEAD (ebda_hpc_head); | |
60 | static LIST_HEAD (bus_info_head); | |
61 | static LIST_HEAD (rio_vg_head); | |
62 | static LIST_HEAD (rio_lo_head); | |
63 | static LIST_HEAD (opt_vg_head); | |
64 | static LIST_HEAD (opt_lo_head); | |
65 | static void __iomem *io_mem; | |
66 | ||
67 | /* Local functions */ | |
68 | static int ebda_rsrc_controller (void); | |
69 | static int ebda_rsrc_rsrc (void); | |
70 | static int ebda_rio_table (void); | |
71 | ||
72 | static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void) | |
73 | { | |
f5afe806 | 74 | return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL); |
1da177e4 LT |
75 | } |
76 | ||
77 | static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count) | |
78 | { | |
79 | struct controller *controller; | |
80 | struct ebda_hpc_slot *slots; | |
81 | struct ebda_hpc_bus *buses; | |
82 | ||
f5afe806 | 83 | controller = kzalloc(sizeof(struct controller), GFP_KERNEL); |
1da177e4 LT |
84 | if (!controller) |
85 | goto error; | |
1da177e4 | 86 | |
f5afe806 | 87 | slots = kcalloc(slot_count, sizeof(struct ebda_hpc_slot), GFP_KERNEL); |
1da177e4 LT |
88 | if (!slots) |
89 | goto error_contr; | |
1da177e4 LT |
90 | controller->slots = slots; |
91 | ||
f5afe806 | 92 | buses = kcalloc(bus_count, sizeof(struct ebda_hpc_bus), GFP_KERNEL); |
1da177e4 LT |
93 | if (!buses) |
94 | goto error_slots; | |
1da177e4 LT |
95 | controller->buses = buses; |
96 | ||
97 | return controller; | |
98 | error_slots: | |
99 | kfree(controller->slots); | |
100 | error_contr: | |
101 | kfree(controller); | |
102 | error: | |
103 | return NULL; | |
104 | } | |
105 | ||
106 | static void free_ebda_hpc (struct controller *controller) | |
107 | { | |
108 | kfree (controller->slots); | |
109 | kfree (controller->buses); | |
110 | kfree (controller); | |
111 | } | |
112 | ||
113 | static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void) | |
114 | { | |
f5afe806 | 115 | return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL); |
1da177e4 LT |
116 | } |
117 | ||
118 | static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void) | |
119 | { | |
f5afe806 | 120 | return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL); |
1da177e4 LT |
121 | } |
122 | ||
123 | static void __init print_bus_info (void) | |
124 | { | |
125 | struct bus_info *ptr; | |
1da177e4 | 126 | |
2fd39aa7 | 127 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
66bef8c0 HH |
128 | debug ("%s - slot_min = %x\n", __func__, ptr->slot_min); |
129 | debug ("%s - slot_max = %x\n", __func__, ptr->slot_max); | |
130 | debug ("%s - slot_count = %x\n", __func__, ptr->slot_count); | |
131 | debug ("%s - bus# = %x\n", __func__, ptr->busno); | |
132 | debug ("%s - current_speed = %x\n", __func__, ptr->current_speed); | |
133 | debug ("%s - controller_id = %x\n", __func__, ptr->controller_id); | |
1da177e4 | 134 | |
66bef8c0 HH |
135 | debug ("%s - slots_at_33_conv = %x\n", __func__, ptr->slots_at_33_conv); |
136 | debug ("%s - slots_at_66_conv = %x\n", __func__, ptr->slots_at_66_conv); | |
137 | debug ("%s - slots_at_66_pcix = %x\n", __func__, ptr->slots_at_66_pcix); | |
138 | debug ("%s - slots_at_100_pcix = %x\n", __func__, ptr->slots_at_100_pcix); | |
139 | debug ("%s - slots_at_133_pcix = %x\n", __func__, ptr->slots_at_133_pcix); | |
1da177e4 LT |
140 | |
141 | } | |
142 | } | |
143 | ||
144 | static void print_lo_info (void) | |
145 | { | |
146 | struct rio_detail *ptr; | |
1da177e4 | 147 | debug ("print_lo_info ----\n"); |
2fd39aa7 | 148 | list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) { |
66bef8c0 HH |
149 | debug ("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id); |
150 | debug ("%s - rio_type = %x\n", __func__, ptr->rio_type); | |
151 | debug ("%s - owner_id = %x\n", __func__, ptr->owner_id); | |
152 | debug ("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num); | |
153 | debug ("%s - wpindex = %x\n", __func__, ptr->wpindex); | |
154 | debug ("%s - chassis_num = %x\n", __func__, ptr->chassis_num); | |
1da177e4 LT |
155 | |
156 | } | |
157 | } | |
158 | ||
159 | static void print_vg_info (void) | |
160 | { | |
161 | struct rio_detail *ptr; | |
66bef8c0 | 162 | debug ("%s ---\n", __func__); |
2fd39aa7 | 163 | list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) { |
66bef8c0 HH |
164 | debug ("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id); |
165 | debug ("%s - rio_type = %x\n", __func__, ptr->rio_type); | |
166 | debug ("%s - owner_id = %x\n", __func__, ptr->owner_id); | |
167 | debug ("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num); | |
168 | debug ("%s - wpindex = %x\n", __func__, ptr->wpindex); | |
169 | debug ("%s - chassis_num = %x\n", __func__, ptr->chassis_num); | |
1da177e4 LT |
170 | |
171 | } | |
172 | } | |
173 | ||
174 | static void __init print_ebda_pci_rsrc (void) | |
175 | { | |
176 | struct ebda_pci_rsrc *ptr; | |
1da177e4 | 177 | |
2fd39aa7 | 178 | list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) { |
1da177e4 | 179 | debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", |
66bef8c0 | 180 | __func__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr); |
1da177e4 LT |
181 | } |
182 | } | |
183 | ||
184 | static void __init print_ibm_slot (void) | |
185 | { | |
186 | struct slot *ptr; | |
1da177e4 | 187 | |
2fd39aa7 | 188 | list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) { |
66bef8c0 | 189 | debug ("%s - slot_number: %x\n", __func__, ptr->number); |
1da177e4 LT |
190 | } |
191 | } | |
192 | ||
193 | static void __init print_opt_vg (void) | |
194 | { | |
195 | struct opt_rio *ptr; | |
66bef8c0 | 196 | debug ("%s ---\n", __func__); |
2fd39aa7 | 197 | list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { |
66bef8c0 HH |
198 | debug ("%s - rio_type %x\n", __func__, ptr->rio_type); |
199 | debug ("%s - chassis_num: %x\n", __func__, ptr->chassis_num); | |
200 | debug ("%s - first_slot_num: %x\n", __func__, ptr->first_slot_num); | |
201 | debug ("%s - middle_num: %x\n", __func__, ptr->middle_num); | |
1da177e4 LT |
202 | } |
203 | } | |
204 | ||
205 | static void __init print_ebda_hpc (void) | |
206 | { | |
207 | struct controller *hpc_ptr; | |
1da177e4 LT |
208 | u16 index; |
209 | ||
2fd39aa7 | 210 | list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) { |
1da177e4 | 211 | for (index = 0; index < hpc_ptr->slot_count; index++) { |
66bef8c0 HH |
212 | debug ("%s - physical slot#: %x\n", __func__, hpc_ptr->slots[index].slot_num); |
213 | debug ("%s - pci bus# of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_bus_num); | |
214 | debug ("%s - index into ctlr addr: %x\n", __func__, hpc_ptr->slots[index].ctl_index); | |
215 | debug ("%s - cap of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_cap); | |
1da177e4 LT |
216 | } |
217 | ||
218 | for (index = 0; index < hpc_ptr->bus_count; index++) { | |
66bef8c0 | 219 | debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num); |
1da177e4 LT |
220 | } |
221 | ||
66bef8c0 | 222 | debug ("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type); |
1da177e4 LT |
223 | switch (hpc_ptr->ctlr_type) { |
224 | case 1: | |
66bef8c0 HH |
225 | debug ("%s - bus: %x\n", __func__, hpc_ptr->u.pci_ctlr.bus); |
226 | debug ("%s - dev_fun: %x\n", __func__, hpc_ptr->u.pci_ctlr.dev_fun); | |
227 | debug ("%s - irq: %x\n", __func__, hpc_ptr->irq); | |
1da177e4 LT |
228 | break; |
229 | ||
230 | case 0: | |
66bef8c0 HH |
231 | debug ("%s - io_start: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_start); |
232 | debug ("%s - io_end: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_end); | |
233 | debug ("%s - irq: %x\n", __func__, hpc_ptr->irq); | |
1da177e4 LT |
234 | break; |
235 | ||
236 | case 2: | |
237 | case 4: | |
66bef8c0 HH |
238 | debug ("%s - wpegbbar: %lx\n", __func__, hpc_ptr->u.wpeg_ctlr.wpegbbar); |
239 | debug ("%s - i2c_addr: %x\n", __func__, hpc_ptr->u.wpeg_ctlr.i2c_addr); | |
240 | debug ("%s - irq: %x\n", __func__, hpc_ptr->irq); | |
1da177e4 LT |
241 | break; |
242 | } | |
243 | } | |
244 | } | |
245 | ||
246 | int __init ibmphp_access_ebda (void) | |
247 | { | |
248 | u8 format, num_ctlrs, rio_complete, hs_complete; | |
249 | u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base; | |
250 | int rc = 0; | |
251 | ||
252 | ||
253 | rio_complete = 0; | |
254 | hs_complete = 0; | |
255 | ||
256 | io_mem = ioremap ((0x40 << 4) + 0x0e, 2); | |
257 | if (!io_mem ) | |
258 | return -ENOMEM; | |
259 | ebda_seg = readw (io_mem); | |
260 | iounmap (io_mem); | |
261 | debug ("returned ebda segment: %x\n", ebda_seg); | |
262 | ||
15160716 | 263 | io_mem = ioremap(ebda_seg<<4, 1024); |
1da177e4 LT |
264 | if (!io_mem ) |
265 | return -ENOMEM; | |
266 | next_offset = 0x180; | |
267 | ||
268 | for (;;) { | |
269 | offset = next_offset; | |
270 | next_offset = readw (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 (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 (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 (io_mem + sub_addr); /* next sub blk */ | |
296 | ||
297 | sub_addr += 2; | |
298 | rc_id = readw (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 (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 enteries: %x\n ", sub_addr); | |
319 | ||
320 | sub_addr = base + re; /* re sub blk */ | |
321 | /* FIXME: rc is never used/checked */ | |
322 | rc = readw (io_mem + sub_addr); /* next sub blk */ | |
323 | ||
324 | sub_addr += 2; | |
325 | re_id = readw (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 (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 enteries: %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 | ||
f5afe806 | 355 | rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL); |
1da177e4 LT |
356 | if (!rio_table_ptr) |
357 | return -ENOMEM; | |
1da177e4 LT |
358 | rio_table_ptr->ver_num = readb (io_mem + offset); |
359 | rio_table_ptr->scal_count = readb (io_mem + offset + 1); | |
360 | rio_table_ptr->riodev_count = readb (io_mem + offset + 2); | |
361 | rio_table_ptr->offset = offset +3 ; | |
362 | ||
363 | debug("info about rio table hdr ---\n"); | |
364 | debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ", | |
365 | rio_table_ptr->ver_num, rio_table_ptr->scal_count, | |
366 | rio_table_ptr->riodev_count, rio_table_ptr->offset); | |
367 | ||
368 | rio_complete = 1; | |
369 | } | |
370 | } | |
371 | ||
372 | if (!hs_complete && !rio_complete) | |
373 | goto error_nodev; | |
374 | ||
375 | if (rio_table_ptr) { | |
376 | if (rio_complete && rio_table_ptr->ver_num == 3) { | |
377 | rc = ebda_rio_table (); | |
378 | if (rc) | |
379 | goto out; | |
380 | } | |
381 | } | |
382 | rc = ebda_rsrc_controller (); | |
383 | if (rc) | |
384 | goto out; | |
385 | ||
386 | rc = ebda_rsrc_rsrc (); | |
387 | goto out; | |
388 | error_nodev: | |
389 | rc = -ENODEV; | |
390 | out: | |
391 | iounmap (io_mem); | |
392 | return rc; | |
393 | } | |
394 | ||
395 | /* | |
396 | * map info of scalability details and rio details from physical address | |
397 | */ | |
398 | static int __init ebda_rio_table (void) | |
399 | { | |
400 | u16 offset; | |
401 | u8 i; | |
402 | struct rio_detail *rio_detail_ptr; | |
403 | ||
404 | offset = rio_table_ptr->offset; | |
405 | offset += 12 * rio_table_ptr->scal_count; | |
406 | ||
407 | // we do concern about rio details | |
408 | for (i = 0; i < rio_table_ptr->riodev_count; i++) { | |
f5afe806 | 409 | rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL); |
1da177e4 LT |
410 | if (!rio_detail_ptr) |
411 | return -ENOMEM; | |
1da177e4 LT |
412 | rio_detail_ptr->rio_node_id = readb (io_mem + offset); |
413 | rio_detail_ptr->bbar = readl (io_mem + offset + 1); | |
414 | rio_detail_ptr->rio_type = readb (io_mem + offset + 5); | |
415 | rio_detail_ptr->owner_id = readb (io_mem + offset + 6); | |
416 | rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7); | |
417 | rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8); | |
418 | rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9); | |
419 | rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10); | |
420 | rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11); | |
421 | rio_detail_ptr->status = readb (io_mem + offset + 12); | |
422 | rio_detail_ptr->wpindex = readb (io_mem + offset + 13); | |
423 | rio_detail_ptr->chassis_num = readb (io_mem + offset + 14); | |
424 | // 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); | |
425 | //create linked list of chassis | |
426 | if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5) | |
427 | list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head); | |
428 | //create linked list of expansion box | |
429 | else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7) | |
430 | list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head); | |
431 | else | |
432 | // not in my concern | |
433 | kfree (rio_detail_ptr); | |
434 | offset += 15; | |
435 | } | |
436 | print_lo_info (); | |
437 | print_vg_info (); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* | |
442 | * reorganizing linked list of chassis | |
443 | */ | |
444 | static struct opt_rio *search_opt_vg (u8 chassis_num) | |
445 | { | |
446 | struct opt_rio *ptr; | |
2fd39aa7 | 447 | list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { |
1da177e4 LT |
448 | if (ptr->chassis_num == chassis_num) |
449 | return ptr; | |
450 | } | |
451 | return NULL; | |
452 | } | |
453 | ||
454 | static int __init combine_wpg_for_chassis (void) | |
455 | { | |
456 | struct opt_rio *opt_rio_ptr = NULL; | |
457 | struct rio_detail *rio_detail_ptr = NULL; | |
1da177e4 | 458 | |
2fd39aa7 | 459 | list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) { |
1da177e4 LT |
460 | opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num); |
461 | if (!opt_rio_ptr) { | |
f5afe806 | 462 | opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL); |
1da177e4 LT |
463 | if (!opt_rio_ptr) |
464 | return -ENOMEM; | |
1da177e4 LT |
465 | opt_rio_ptr->rio_type = rio_detail_ptr->rio_type; |
466 | opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num; | |
467 | opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num; | |
468 | opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num; | |
469 | list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head); | |
470 | } else { | |
471 | opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num); | |
472 | opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num); | |
473 | } | |
474 | } | |
475 | print_opt_vg (); | |
476 | return 0; | |
477 | } | |
478 | ||
479 | /* | |
a8d2dbd3 | 480 | * reorganizing linked list of expansion box |
1da177e4 LT |
481 | */ |
482 | static struct opt_rio_lo *search_opt_lo (u8 chassis_num) | |
483 | { | |
484 | struct opt_rio_lo *ptr; | |
2fd39aa7 | 485 | list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) { |
1da177e4 LT |
486 | if (ptr->chassis_num == chassis_num) |
487 | return ptr; | |
488 | } | |
489 | return NULL; | |
490 | } | |
491 | ||
492 | static int combine_wpg_for_expansion (void) | |
493 | { | |
494 | struct opt_rio_lo *opt_rio_lo_ptr = NULL; | |
495 | struct rio_detail *rio_detail_ptr = NULL; | |
1da177e4 | 496 | |
2fd39aa7 | 497 | list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) { |
1da177e4 LT |
498 | opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num); |
499 | if (!opt_rio_lo_ptr) { | |
f5afe806 | 500 | opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL); |
1da177e4 LT |
501 | if (!opt_rio_lo_ptr) |
502 | return -ENOMEM; | |
1da177e4 LT |
503 | opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type; |
504 | opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num; | |
505 | opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num; | |
506 | opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num; | |
507 | opt_rio_lo_ptr->pack_count = 1; | |
508 | ||
509 | list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head); | |
510 | } else { | |
511 | opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num); | |
512 | opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num); | |
513 | opt_rio_lo_ptr->pack_count = 2; | |
514 | } | |
515 | } | |
516 | return 0; | |
517 | } | |
518 | ||
519 | ||
520 | /* Since we don't know the max slot number per each chassis, hence go | |
521 | * through the list of all chassis to find out the range | |
522 | * Arguments: slot_num, 1st slot number of the chassis we think we are on, | |
523 | * var (0 = chassis, 1 = expansion box) | |
524 | */ | |
525 | static int first_slot_num (u8 slot_num, u8 first_slot, u8 var) | |
526 | { | |
527 | struct opt_rio *opt_vg_ptr = NULL; | |
528 | struct opt_rio_lo *opt_lo_ptr = NULL; | |
1da177e4 LT |
529 | int rc = 0; |
530 | ||
531 | if (!var) { | |
2fd39aa7 | 532 | list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) { |
1da177e4 LT |
533 | if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) { |
534 | rc = -ENODEV; | |
535 | break; | |
536 | } | |
537 | } | |
538 | } else { | |
2fd39aa7 | 539 | list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) { |
1da177e4 LT |
540 | if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) { |
541 | rc = -ENODEV; | |
542 | break; | |
543 | } | |
544 | } | |
545 | } | |
546 | return rc; | |
547 | } | |
548 | ||
549 | static struct opt_rio_lo * find_rxe_num (u8 slot_num) | |
550 | { | |
551 | struct opt_rio_lo *opt_lo_ptr; | |
1da177e4 | 552 | |
2fd39aa7 | 553 | list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) { |
1da177e4 LT |
554 | //check to see if this slot_num belongs to expansion box |
555 | if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1))) | |
556 | return opt_lo_ptr; | |
557 | } | |
558 | return NULL; | |
559 | } | |
560 | ||
561 | static struct opt_rio * find_chassis_num (u8 slot_num) | |
562 | { | |
563 | struct opt_rio *opt_vg_ptr; | |
1da177e4 | 564 | |
2fd39aa7 | 565 | list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) { |
1da177e4 LT |
566 | //check to see if this slot_num belongs to chassis |
567 | if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0))) | |
568 | return opt_vg_ptr; | |
569 | } | |
570 | return NULL; | |
571 | } | |
572 | ||
573 | /* This routine will find out how many slots are in the chassis, so that | |
574 | * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc | |
575 | */ | |
576 | static u8 calculate_first_slot (u8 slot_num) | |
577 | { | |
578 | u8 first_slot = 1; | |
1da177e4 LT |
579 | struct slot * slot_cur; |
580 | ||
2fd39aa7 | 581 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
582 | if (slot_cur->ctrl) { |
583 | if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num)) | |
584 | first_slot = slot_cur->ctrl->ending_slot_num; | |
585 | } | |
586 | } | |
587 | return first_slot + 1; | |
588 | ||
589 | } | |
a32615a1 AC |
590 | |
591 | #define SLOT_NAME_SIZE 30 | |
592 | ||
1da177e4 LT |
593 | static char *create_file_name (struct slot * slot_cur) |
594 | { | |
595 | struct opt_rio *opt_vg_ptr = NULL; | |
596 | struct opt_rio_lo *opt_lo_ptr = NULL; | |
a32615a1 | 597 | static char str[SLOT_NAME_SIZE]; |
1da177e4 LT |
598 | int which = 0; /* rxe = 1, chassis = 0 */ |
599 | u8 number = 1; /* either chassis or rxe # */ | |
600 | u8 first_slot = 1; | |
601 | u8 slot_num; | |
602 | u8 flag = 0; | |
603 | ||
604 | if (!slot_cur) { | |
605 | err ("Structure passed is empty\n"); | |
606 | return NULL; | |
607 | } | |
608 | ||
609 | slot_num = slot_cur->number; | |
610 | ||
611 | memset (str, 0, sizeof(str)); | |
612 | ||
613 | if (rio_table_ptr) { | |
614 | if (rio_table_ptr->ver_num == 3) { | |
615 | opt_vg_ptr = find_chassis_num (slot_num); | |
616 | opt_lo_ptr = find_rxe_num (slot_num); | |
617 | } | |
618 | } | |
619 | if (opt_vg_ptr) { | |
620 | if (opt_lo_ptr) { | |
621 | if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) { | |
622 | number = opt_lo_ptr->chassis_num; | |
623 | first_slot = opt_lo_ptr->first_slot_num; | |
624 | which = 1; /* it is RXE */ | |
625 | } else { | |
626 | first_slot = opt_vg_ptr->first_slot_num; | |
627 | number = opt_vg_ptr->chassis_num; | |
628 | which = 0; | |
629 | } | |
630 | } else { | |
631 | first_slot = opt_vg_ptr->first_slot_num; | |
632 | number = opt_vg_ptr->chassis_num; | |
633 | which = 0; | |
634 | } | |
635 | ++flag; | |
636 | } else if (opt_lo_ptr) { | |
637 | number = opt_lo_ptr->chassis_num; | |
638 | first_slot = opt_lo_ptr->first_slot_num; | |
639 | which = 1; | |
640 | ++flag; | |
641 | } else if (rio_table_ptr) { | |
642 | if (rio_table_ptr->ver_num == 3) { | |
643 | /* if both NULL and we DO have correct RIO table in BIOS */ | |
644 | return NULL; | |
645 | } | |
646 | } | |
647 | if (!flag) { | |
648 | if (slot_cur->ctrl->ctlr_type == 4) { | |
649 | first_slot = calculate_first_slot (slot_num); | |
650 | which = 1; | |
651 | } else { | |
652 | which = 0; | |
653 | } | |
654 | } | |
655 | ||
656 | sprintf(str, "%s%dslot%d", | |
657 | which == 0 ? "chassis" : "rxe", | |
658 | number, slot_num - first_slot + 1); | |
659 | return str; | |
660 | } | |
661 | ||
662 | static int fillslotinfo(struct hotplug_slot *hotplug_slot) | |
663 | { | |
664 | struct slot *slot; | |
665 | int rc = 0; | |
666 | ||
667 | if (!hotplug_slot || !hotplug_slot->private) | |
668 | return -EINVAL; | |
669 | ||
670 | slot = hotplug_slot->private; | |
671 | rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL); | |
672 | if (rc) | |
673 | return rc; | |
674 | ||
675 | // power - enabled:1 not:0 | |
676 | hotplug_slot->info->power_status = SLOT_POWER(slot->status); | |
677 | ||
678 | // attention - off:0, on:1, blinking:2 | |
679 | hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status); | |
680 | ||
681 | // latch - open:1 closed:0 | |
682 | hotplug_slot->info->latch_status = SLOT_LATCH(slot->status); | |
683 | ||
684 | // pci board - present:1 not:0 | |
685 | if (SLOT_PRESENT (slot->status)) | |
686 | hotplug_slot->info->adapter_status = 1; | |
687 | else | |
688 | hotplug_slot->info->adapter_status = 0; | |
689 | /* | |
690 | if (slot->bus_on->supported_bus_mode | |
691 | && (slot->bus_on->supported_speed == BUS_SPEED_66)) | |
692 | hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX; | |
693 | else | |
694 | hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed; | |
695 | */ | |
696 | ||
697 | return rc; | |
698 | } | |
699 | ||
700 | static void release_slot(struct hotplug_slot *hotplug_slot) | |
701 | { | |
702 | struct slot *slot; | |
703 | ||
704 | if (!hotplug_slot || !hotplug_slot->private) | |
705 | return; | |
706 | ||
707 | slot = hotplug_slot->private; | |
708 | kfree(slot->hotplug_slot->info); | |
1da177e4 LT |
709 | kfree(slot->hotplug_slot); |
710 | slot->ctrl = NULL; | |
711 | slot->bus_on = NULL; | |
712 | ||
713 | /* we don't want to actually remove the resources, since free_resources will do just that */ | |
714 | ibmphp_unconfigure_card(&slot, -1); | |
715 | ||
716 | kfree (slot); | |
717 | } | |
718 | ||
719 | static struct pci_driver ibmphp_driver; | |
720 | ||
721 | /* | |
722 | * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of | |
723 | * each hpc from physical address to a list of hot plug controllers based on | |
724 | * hpc descriptors. | |
725 | */ | |
726 | static int __init ebda_rsrc_controller (void) | |
727 | { | |
728 | u16 addr, addr_slot, addr_bus; | |
729 | u8 ctlr_id, temp, bus_index; | |
730 | u16 ctlr, slot, bus; | |
731 | u16 slot_num, bus_num, index; | |
732 | struct hotplug_slot *hp_slot_ptr; | |
733 | struct controller *hpc_ptr; | |
734 | struct ebda_hpc_bus *bus_ptr; | |
735 | struct ebda_hpc_slot *slot_ptr; | |
736 | struct bus_info *bus_info_ptr1, *bus_info_ptr2; | |
737 | int rc; | |
738 | struct slot *tmp_slot; | |
a32615a1 | 739 | char name[SLOT_NAME_SIZE]; |
1da177e4 LT |
740 | |
741 | addr = hpc_list_ptr->phys_addr; | |
742 | for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) { | |
743 | bus_index = 1; | |
744 | ctlr_id = readb (io_mem + addr); | |
745 | addr += 1; | |
746 | slot_num = readb (io_mem + addr); | |
747 | ||
748 | addr += 1; | |
749 | addr_slot = addr; /* offset of slot structure */ | |
750 | addr += (slot_num * 4); | |
751 | ||
752 | bus_num = readb (io_mem + addr); | |
753 | ||
754 | addr += 1; | |
755 | addr_bus = addr; /* offset of bus */ | |
756 | addr += (bus_num * 9); /* offset of ctlr_type */ | |
757 | temp = readb (io_mem + addr); | |
758 | ||
759 | addr += 1; | |
760 | /* init hpc structure */ | |
761 | hpc_ptr = alloc_ebda_hpc (slot_num, bus_num); | |
762 | if (!hpc_ptr ) { | |
763 | rc = -ENOMEM; | |
764 | goto error_no_hpc; | |
765 | } | |
766 | hpc_ptr->ctlr_id = ctlr_id; | |
767 | hpc_ptr->ctlr_relative_id = ctlr; | |
768 | hpc_ptr->slot_count = slot_num; | |
769 | hpc_ptr->bus_count = bus_num; | |
770 | debug ("now enter ctlr data struture ---\n"); | |
771 | debug ("ctlr id: %x\n", ctlr_id); | |
772 | debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id); | |
773 | debug ("count of slots controlled by this ctlr: %x\n", slot_num); | |
774 | debug ("count of buses controlled by this ctlr: %x\n", bus_num); | |
775 | ||
776 | /* init slot structure, fetch slot, bus, cap... */ | |
777 | slot_ptr = hpc_ptr->slots; | |
778 | for (slot = 0; slot < slot_num; slot++) { | |
779 | slot_ptr->slot_num = readb (io_mem + addr_slot); | |
780 | slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num); | |
781 | slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num); | |
782 | slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num); | |
783 | ||
784 | // create bus_info lined list --- if only one slot per bus: slot_min = slot_max | |
785 | ||
786 | bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num); | |
787 | if (!bus_info_ptr2) { | |
f5afe806 | 788 | bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL); |
1da177e4 LT |
789 | if (!bus_info_ptr1) { |
790 | rc = -ENOMEM; | |
791 | goto error_no_hp_slot; | |
792 | } | |
1da177e4 LT |
793 | bus_info_ptr1->slot_min = slot_ptr->slot_num; |
794 | bus_info_ptr1->slot_max = slot_ptr->slot_num; | |
795 | bus_info_ptr1->slot_count += 1; | |
796 | bus_info_ptr1->busno = slot_ptr->slot_bus_num; | |
797 | bus_info_ptr1->index = bus_index++; | |
798 | bus_info_ptr1->current_speed = 0xff; | |
799 | bus_info_ptr1->current_bus_mode = 0xff; | |
800 | ||
801 | bus_info_ptr1->controller_id = hpc_ptr->ctlr_id; | |
802 | ||
803 | list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head); | |
804 | ||
805 | } else { | |
806 | bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num); | |
807 | bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num); | |
808 | bus_info_ptr2->slot_count += 1; | |
809 | ||
810 | } | |
811 | ||
812 | // end of creating the bus_info linked list | |
813 | ||
814 | slot_ptr++; | |
815 | addr_slot += 1; | |
816 | } | |
817 | ||
818 | /* init bus structure */ | |
819 | bus_ptr = hpc_ptr->buses; | |
820 | for (bus = 0; bus < bus_num; bus++) { | |
821 | bus_ptr->bus_num = readb (io_mem + addr_bus + bus); | |
822 | bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus); | |
823 | bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1); | |
824 | ||
825 | bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2); | |
826 | ||
827 | bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3); | |
828 | ||
829 | bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4); | |
830 | ||
831 | bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num); | |
832 | if (bus_info_ptr2) { | |
833 | bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv; | |
834 | bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv; | |
835 | bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix; | |
836 | bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix; | |
837 | bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix; | |
838 | } | |
839 | bus_ptr++; | |
840 | } | |
841 | ||
842 | hpc_ptr->ctlr_type = temp; | |
843 | ||
844 | switch (hpc_ptr->ctlr_type) { | |
845 | case 1: | |
846 | hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr); | |
847 | hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1); | |
848 | hpc_ptr->irq = readb (io_mem + addr + 2); | |
849 | addr += 3; | |
850 | debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n", | |
851 | hpc_ptr->u.pci_ctlr.bus, | |
852 | hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq); | |
853 | break; | |
854 | ||
855 | case 0: | |
856 | hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr); | |
857 | hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2); | |
858 | if (!request_region (hpc_ptr->u.isa_ctlr.io_start, | |
859 | (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1), | |
860 | "ibmphp")) { | |
861 | rc = -ENODEV; | |
862 | goto error_no_hp_slot; | |
863 | } | |
864 | hpc_ptr->irq = readb (io_mem + addr + 4); | |
865 | addr += 5; | |
866 | break; | |
867 | ||
868 | case 2: | |
869 | case 4: | |
870 | hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr); | |
871 | hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4); | |
872 | hpc_ptr->irq = readb (io_mem + addr + 5); | |
873 | addr += 6; | |
874 | break; | |
875 | default: | |
876 | rc = -ENODEV; | |
877 | goto error_no_hp_slot; | |
878 | } | |
879 | ||
880 | //reorganize chassis' linked list | |
881 | combine_wpg_for_chassis (); | |
882 | combine_wpg_for_expansion (); | |
883 | hpc_ptr->revision = 0xff; | |
884 | hpc_ptr->options = 0xff; | |
885 | hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num; | |
886 | hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num; | |
887 | ||
888 | // register slots with hpc core as well as create linked list of ibm slot | |
889 | for (index = 0; index < hpc_ptr->slot_count; index++) { | |
890 | ||
f5afe806 | 891 | hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL); |
1da177e4 LT |
892 | if (!hp_slot_ptr) { |
893 | rc = -ENOMEM; | |
894 | goto error_no_hp_slot; | |
895 | } | |
1da177e4 | 896 | |
f5afe806 | 897 | hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); |
1da177e4 LT |
898 | if (!hp_slot_ptr->info) { |
899 | rc = -ENOMEM; | |
900 | goto error_no_hp_info; | |
901 | } | |
1da177e4 | 902 | |
f5afe806 | 903 | tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL); |
1da177e4 LT |
904 | if (!tmp_slot) { |
905 | rc = -ENOMEM; | |
906 | goto error_no_slot; | |
907 | } | |
1da177e4 | 908 | |
dc6712d1 | 909 | tmp_slot->flag = 1; |
1da177e4 LT |
910 | |
911 | tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap; | |
912 | if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX) | |
913 | tmp_slot->supported_speed = 3; | |
914 | else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX) | |
915 | tmp_slot->supported_speed = 2; | |
916 | else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX) | |
917 | tmp_slot->supported_speed = 1; | |
918 | ||
919 | if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP) | |
920 | tmp_slot->supported_bus_mode = 1; | |
921 | else | |
922 | tmp_slot->supported_bus_mode = 0; | |
923 | ||
924 | ||
925 | tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num; | |
926 | ||
927 | bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num); | |
928 | if (!bus_info_ptr1) { | |
b91aac29 | 929 | kfree(tmp_slot); |
1da177e4 LT |
930 | rc = -ENODEV; |
931 | goto error; | |
932 | } | |
933 | tmp_slot->bus_on = bus_info_ptr1; | |
934 | bus_info_ptr1 = NULL; | |
935 | tmp_slot->ctrl = hpc_ptr; | |
936 | ||
937 | tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index; | |
938 | tmp_slot->number = hpc_ptr->slots[index].slot_num; | |
939 | tmp_slot->hotplug_slot = hp_slot_ptr; | |
940 | ||
941 | hp_slot_ptr->private = tmp_slot; | |
942 | hp_slot_ptr->release = release_slot; | |
943 | ||
944 | rc = fillslotinfo(hp_slot_ptr); | |
945 | if (rc) | |
946 | goto error; | |
947 | ||
948 | rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private); | |
949 | if (rc) | |
950 | goto error; | |
951 | hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops; | |
952 | ||
953 | // end of registering ibm slot with hotplug core | |
954 | ||
955 | list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head); | |
956 | } | |
957 | ||
958 | print_bus_info (); | |
959 | list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head ); | |
960 | ||
961 | } /* each hpc */ | |
962 | ||
2fd39aa7 | 963 | list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) { |
a32615a1 | 964 | snprintf(name, SLOT_NAME_SIZE, "%s", create_file_name(tmp_slot)); |
f46753c5 | 965 | pci_hp_register(tmp_slot->hotplug_slot, |
a32615a1 | 966 | pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name); |
1da177e4 LT |
967 | } |
968 | ||
969 | print_ebda_hpc (); | |
970 | print_ibm_slot (); | |
971 | return 0; | |
972 | ||
973 | error: | |
974 | kfree (hp_slot_ptr->private); | |
975 | error_no_slot: | |
1da177e4 LT |
976 | kfree (hp_slot_ptr->info); |
977 | error_no_hp_info: | |
978 | kfree (hp_slot_ptr); | |
979 | error_no_hp_slot: | |
980 | free_ebda_hpc (hpc_ptr); | |
981 | error_no_hpc: | |
982 | iounmap (io_mem); | |
983 | return rc; | |
984 | } | |
985 | ||
986 | /* | |
987 | * map info (bus, devfun, start addr, end addr..) of i/o, memory, | |
988 | * pfm from the physical addr to a list of resource. | |
989 | */ | |
990 | static int __init ebda_rsrc_rsrc (void) | |
991 | { | |
992 | u16 addr; | |
993 | short rsrc; | |
994 | u8 type, rsrc_type; | |
995 | struct ebda_pci_rsrc *rsrc_ptr; | |
996 | ||
997 | addr = rsrc_list_ptr->phys_addr; | |
998 | debug ("now entering rsrc land\n"); | |
999 | debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr); | |
1000 | ||
1001 | for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) { | |
1002 | type = readb (io_mem + addr); | |
1003 | ||
1004 | addr += 1; | |
1005 | rsrc_type = type & EBDA_RSRC_TYPE_MASK; | |
1006 | ||
1007 | if (rsrc_type == EBDA_IO_RSRC_TYPE) { | |
1008 | rsrc_ptr = alloc_ebda_pci_rsrc (); | |
1009 | if (!rsrc_ptr) { | |
1010 | iounmap (io_mem); | |
1011 | return -ENOMEM; | |
1012 | } | |
1013 | rsrc_ptr->rsrc_type = type; | |
1014 | ||
1015 | rsrc_ptr->bus_num = readb (io_mem + addr); | |
1016 | rsrc_ptr->dev_fun = readb (io_mem + addr + 1); | |
1017 | rsrc_ptr->start_addr = readw (io_mem + addr + 2); | |
1018 | rsrc_ptr->end_addr = readw (io_mem + addr + 4); | |
1019 | addr += 6; | |
1020 | ||
1021 | debug ("rsrc from io type ----\n"); | |
1022 | debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", | |
1023 | rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr); | |
1024 | ||
1025 | list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head); | |
1026 | } | |
1027 | ||
1028 | if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) { | |
1029 | rsrc_ptr = alloc_ebda_pci_rsrc (); | |
1030 | if (!rsrc_ptr ) { | |
1031 | iounmap (io_mem); | |
1032 | return -ENOMEM; | |
1033 | } | |
1034 | rsrc_ptr->rsrc_type = type; | |
1035 | ||
1036 | rsrc_ptr->bus_num = readb (io_mem + addr); | |
1037 | rsrc_ptr->dev_fun = readb (io_mem + addr + 1); | |
1038 | rsrc_ptr->start_addr = readl (io_mem + addr + 2); | |
1039 | rsrc_ptr->end_addr = readl (io_mem + addr + 6); | |
1040 | addr += 10; | |
1041 | ||
1042 | debug ("rsrc from mem or pfm ---\n"); | |
1043 | debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", | |
1044 | rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr); | |
1045 | ||
1046 | list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head); | |
1047 | } | |
1048 | } | |
1049 | kfree (rsrc_list_ptr); | |
1050 | rsrc_list_ptr = NULL; | |
1051 | print_ebda_pci_rsrc (); | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | u16 ibmphp_get_total_controllers (void) | |
1056 | { | |
1057 | return hpc_list_ptr->num_ctlrs; | |
1058 | } | |
1059 | ||
1060 | struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num) | |
1061 | { | |
1062 | struct slot *slot; | |
1da177e4 | 1063 | |
2fd39aa7 | 1064 | list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
1065 | if (slot->number == physical_num) |
1066 | return slot; | |
1067 | } | |
1068 | return NULL; | |
1069 | } | |
1070 | ||
1071 | /* To find: | |
1072 | * - the smallest slot number | |
1073 | * - the largest slot number | |
1074 | * - the total number of the slots based on each bus | |
1075 | * (if only one slot per bus slot_min = slot_max ) | |
1076 | */ | |
1077 | struct bus_info *ibmphp_find_same_bus_num (u32 num) | |
1078 | { | |
1079 | struct bus_info *ptr; | |
1da177e4 | 1080 | |
2fd39aa7 | 1081 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
1da177e4 LT |
1082 | if (ptr->busno == num) |
1083 | return ptr; | |
1084 | } | |
1085 | return NULL; | |
1086 | } | |
1087 | ||
1088 | /* Finding relative bus number, in order to map corresponding | |
1089 | * bus register | |
1090 | */ | |
1091 | int ibmphp_get_bus_index (u8 num) | |
1092 | { | |
1093 | struct bus_info *ptr; | |
1da177e4 | 1094 | |
2fd39aa7 | 1095 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
1da177e4 LT |
1096 | if (ptr->busno == num) |
1097 | return ptr->index; | |
1098 | } | |
1099 | return -ENODEV; | |
1100 | } | |
1101 | ||
1102 | void ibmphp_free_bus_info_queue (void) | |
1103 | { | |
1104 | struct bus_info *bus_info; | |
1105 | struct list_head *list; | |
1106 | struct list_head *next; | |
1107 | ||
1108 | list_for_each_safe (list, next, &bus_info_head ) { | |
1109 | bus_info = list_entry (list, struct bus_info, bus_info_list); | |
1110 | kfree (bus_info); | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | void ibmphp_free_ebda_hpc_queue (void) | |
1115 | { | |
1116 | struct controller *controller = NULL; | |
1117 | struct list_head *list; | |
1118 | struct list_head *next; | |
1119 | int pci_flag = 0; | |
1120 | ||
1121 | list_for_each_safe (list, next, &ebda_hpc_head) { | |
1122 | controller = list_entry (list, struct controller, ebda_hpc_list); | |
1123 | if (controller->ctlr_type == 0) | |
1124 | release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1)); | |
1125 | else if ((controller->ctlr_type == 1) && (!pci_flag)) { | |
1126 | ++pci_flag; | |
1127 | pci_unregister_driver (&ibmphp_driver); | |
1128 | } | |
1129 | free_ebda_hpc (controller); | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | void ibmphp_free_ebda_pci_rsrc_queue (void) | |
1134 | { | |
1135 | struct ebda_pci_rsrc *resource; | |
1136 | struct list_head *list; | |
1137 | struct list_head *next; | |
1138 | ||
1139 | list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) { | |
1140 | resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list); | |
1141 | kfree (resource); | |
1142 | resource = NULL; | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | static struct pci_device_id id_table[] = { | |
1147 | { | |
1148 | .vendor = PCI_VENDOR_ID_IBM, | |
1149 | .device = HPC_DEVICE_ID, | |
1150 | .subvendor = PCI_VENDOR_ID_IBM, | |
1151 | .subdevice = HPC_SUBSYSTEM_ID, | |
1152 | .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), | |
1153 | }, {} | |
1154 | }; | |
1155 | ||
1156 | MODULE_DEVICE_TABLE(pci, id_table); | |
1157 | ||
1158 | static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *); | |
1159 | static struct pci_driver ibmphp_driver = { | |
1160 | .name = "ibmphp", | |
1161 | .id_table = id_table, | |
1162 | .probe = ibmphp_probe, | |
1163 | }; | |
1164 | ||
1165 | int ibmphp_register_pci (void) | |
1166 | { | |
1167 | struct controller *ctrl; | |
1da177e4 LT |
1168 | int rc = 0; |
1169 | ||
2fd39aa7 | 1170 | list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) { |
1da177e4 LT |
1171 | if (ctrl->ctlr_type == 1) { |
1172 | rc = pci_register_driver(&ibmphp_driver); | |
1173 | break; | |
1174 | } | |
1175 | } | |
1176 | return rc; | |
1177 | } | |
1178 | static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids) | |
1179 | { | |
1180 | struct controller *ctrl; | |
1da177e4 LT |
1181 | |
1182 | debug ("inside ibmphp_probe\n"); | |
1183 | ||
2fd39aa7 | 1184 | list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) { |
1da177e4 LT |
1185 | if (ctrl->ctlr_type == 1) { |
1186 | if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) { | |
1187 | ctrl->ctrl_dev = dev; | |
1188 | debug ("found device!!!\n"); | |
1189 | debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device); | |
1190 | return 0; | |
1191 | } | |
1192 | } | |
1193 | } | |
1194 | return -ENODEV; | |
1195 | } | |
1196 |