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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; | |
f7625980 | 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); | |
f7625980 | 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; | |
f7625980 | 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) { |
f7625980 | 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 | { | |
b0fc889c | 248 | u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz; |
1da177e4 LT |
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); | |
f7625980 | 262 | |
b0fc889c | 263 | io_mem = ioremap(ebda_seg<<4, 1); |
ba02b242 AM |
264 | if (!io_mem) |
265 | return -ENOMEM; | |
b0fc889c C |
266 | ebda_sz = readb(io_mem); |
267 | iounmap(io_mem); | |
268 | debug("ebda size: %d(KiB)\n", ebda_sz); | |
269 | if (ebda_sz == 0) | |
270 | return -ENOMEM; | |
271 | ||
272 | io_mem = ioremap(ebda_seg<<4, (ebda_sz * 1024)); | |
1da177e4 LT |
273 | if (!io_mem ) |
274 | return -ENOMEM; | |
275 | next_offset = 0x180; | |
276 | ||
277 | for (;;) { | |
278 | offset = next_offset; | |
ac3abf2c SR |
279 | |
280 | /* Make sure what we read is still in the mapped section */ | |
281 | if (WARN(offset > (ebda_sz * 1024 - 4), | |
282 | "ibmphp_ebda: next read is beyond ebda_sz\n")) | |
283 | break; | |
284 | ||
1da177e4 LT |
285 | next_offset = readw (io_mem + offset); /* offset of next blk */ |
286 | ||
287 | offset += 2; | |
288 | if (next_offset == 0) /* 0 indicate it's last blk */ | |
289 | break; | |
290 | blk_id = readw (io_mem + offset); /* this blk id */ | |
291 | ||
292 | offset += 2; | |
293 | /* check if it is hot swap block or rio block */ | |
294 | if (blk_id != 0x4853 && blk_id != 0x4752) | |
295 | continue; | |
296 | /* found hs table */ | |
297 | if (blk_id == 0x4853) { | |
298 | debug ("now enter hot swap block---\n"); | |
299 | debug ("hot blk id: %x\n", blk_id); | |
300 | format = readb (io_mem + offset); | |
301 | ||
302 | offset += 1; | |
303 | if (format != 4) | |
304 | goto error_nodev; | |
305 | debug ("hot blk format: %x\n", format); | |
306 | /* hot swap sub blk */ | |
307 | base = offset; | |
308 | ||
309 | sub_addr = base; | |
310 | re = readw (io_mem + sub_addr); /* next sub blk */ | |
311 | ||
312 | sub_addr += 2; | |
f7625980 | 313 | rc_id = readw (io_mem + sub_addr); /* sub blk id */ |
1da177e4 LT |
314 | |
315 | sub_addr += 2; | |
316 | if (rc_id != 0x5243) | |
317 | goto error_nodev; | |
318 | /* rc sub blk signature */ | |
319 | num_ctlrs = readb (io_mem + sub_addr); | |
320 | ||
321 | sub_addr += 1; | |
322 | hpc_list_ptr = alloc_ebda_hpc_list (); | |
323 | if (!hpc_list_ptr) { | |
324 | rc = -ENOMEM; | |
325 | goto out; | |
326 | } | |
327 | hpc_list_ptr->format = format; | |
328 | hpc_list_ptr->num_ctlrs = num_ctlrs; | |
329 | hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */ | |
330 | debug ("info about hpc descriptor---\n"); | |
331 | debug ("hot blk format: %x\n", format); | |
332 | debug ("num of controller: %x\n", num_ctlrs); | |
f7625980 | 333 | debug ("offset of hpc data structure entries: %x\n ", sub_addr); |
1da177e4 LT |
334 | |
335 | sub_addr = base + re; /* re sub blk */ | |
336 | /* FIXME: rc is never used/checked */ | |
337 | rc = readw (io_mem + sub_addr); /* next sub blk */ | |
338 | ||
339 | sub_addr += 2; | |
340 | re_id = readw (io_mem + sub_addr); /* sub blk id */ | |
341 | ||
342 | sub_addr += 2; | |
343 | if (re_id != 0x5245) | |
344 | goto error_nodev; | |
345 | ||
346 | /* signature of re */ | |
347 | num_entries = readw (io_mem + sub_addr); | |
348 | ||
349 | sub_addr += 2; /* offset of RSRC_ENTRIES blk */ | |
350 | rsrc_list_ptr = alloc_ebda_rsrc_list (); | |
351 | if (!rsrc_list_ptr ) { | |
352 | rc = -ENOMEM; | |
353 | goto out; | |
354 | } | |
355 | rsrc_list_ptr->format = format; | |
356 | rsrc_list_ptr->num_entries = num_entries; | |
357 | rsrc_list_ptr->phys_addr = sub_addr; | |
358 | ||
359 | debug ("info about rsrc descriptor---\n"); | |
360 | debug ("format: %x\n", format); | |
361 | debug ("num of rsrc: %x\n", num_entries); | |
f7625980 | 362 | debug ("offset of rsrc data structure entries: %x\n ", sub_addr); |
1da177e4 LT |
363 | |
364 | hs_complete = 1; | |
365 | } else { | |
366 | /* found rio table, blk_id == 0x4752 */ | |
367 | debug ("now enter io table ---\n"); | |
368 | debug ("rio blk id: %x\n", blk_id); | |
369 | ||
f5afe806 | 370 | rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL); |
8f0cdddc JL |
371 | if (!rio_table_ptr) { |
372 | rc = -ENOMEM; | |
373 | goto out; | |
374 | } | |
1da177e4 LT |
375 | rio_table_ptr->ver_num = readb (io_mem + offset); |
376 | rio_table_ptr->scal_count = readb (io_mem + offset + 1); | |
377 | rio_table_ptr->riodev_count = readb (io_mem + offset + 2); | |
378 | rio_table_ptr->offset = offset +3 ; | |
f7625980 | 379 | |
1da177e4 LT |
380 | debug("info about rio table hdr ---\n"); |
381 | debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ", | |
382 | rio_table_ptr->ver_num, rio_table_ptr->scal_count, | |
383 | rio_table_ptr->riodev_count, rio_table_ptr->offset); | |
384 | ||
385 | rio_complete = 1; | |
386 | } | |
387 | } | |
388 | ||
389 | if (!hs_complete && !rio_complete) | |
390 | goto error_nodev; | |
391 | ||
392 | if (rio_table_ptr) { | |
393 | if (rio_complete && rio_table_ptr->ver_num == 3) { | |
394 | rc = ebda_rio_table (); | |
395 | if (rc) | |
396 | goto out; | |
397 | } | |
398 | } | |
399 | rc = ebda_rsrc_controller (); | |
400 | if (rc) | |
401 | goto out; | |
402 | ||
403 | rc = ebda_rsrc_rsrc (); | |
404 | goto out; | |
405 | error_nodev: | |
406 | rc = -ENODEV; | |
407 | out: | |
408 | iounmap (io_mem); | |
409 | return rc; | |
410 | } | |
411 | ||
412 | /* | |
413 | * map info of scalability details and rio details from physical address | |
414 | */ | |
415 | static int __init ebda_rio_table (void) | |
416 | { | |
417 | u16 offset; | |
418 | u8 i; | |
419 | struct rio_detail *rio_detail_ptr; | |
420 | ||
421 | offset = rio_table_ptr->offset; | |
422 | offset += 12 * rio_table_ptr->scal_count; | |
423 | ||
424 | // we do concern about rio details | |
425 | for (i = 0; i < rio_table_ptr->riodev_count; i++) { | |
f5afe806 | 426 | rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL); |
1da177e4 LT |
427 | if (!rio_detail_ptr) |
428 | return -ENOMEM; | |
1da177e4 LT |
429 | rio_detail_ptr->rio_node_id = readb (io_mem + offset); |
430 | rio_detail_ptr->bbar = readl (io_mem + offset + 1); | |
431 | rio_detail_ptr->rio_type = readb (io_mem + offset + 5); | |
432 | rio_detail_ptr->owner_id = readb (io_mem + offset + 6); | |
433 | rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7); | |
434 | rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8); | |
435 | rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9); | |
436 | rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10); | |
437 | rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11); | |
438 | rio_detail_ptr->status = readb (io_mem + offset + 12); | |
439 | rio_detail_ptr->wpindex = readb (io_mem + offset + 13); | |
440 | rio_detail_ptr->chassis_num = readb (io_mem + offset + 14); | |
441 | // 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); | |
442 | //create linked list of chassis | |
f7625980 | 443 | if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5) |
1da177e4 | 444 | list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head); |
f7625980 BH |
445 | //create linked list of expansion box |
446 | else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7) | |
1da177e4 | 447 | list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head); |
f7625980 | 448 | else |
1da177e4 LT |
449 | // not in my concern |
450 | kfree (rio_detail_ptr); | |
451 | offset += 15; | |
452 | } | |
453 | print_lo_info (); | |
454 | print_vg_info (); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* | |
f7625980 | 459 | * reorganizing linked list of chassis |
1da177e4 LT |
460 | */ |
461 | static struct opt_rio *search_opt_vg (u8 chassis_num) | |
462 | { | |
463 | struct opt_rio *ptr; | |
2fd39aa7 | 464 | list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { |
1da177e4 LT |
465 | if (ptr->chassis_num == chassis_num) |
466 | return ptr; | |
f7625980 | 467 | } |
1da177e4 LT |
468 | return NULL; |
469 | } | |
470 | ||
471 | static int __init combine_wpg_for_chassis (void) | |
472 | { | |
473 | struct opt_rio *opt_rio_ptr = NULL; | |
474 | struct rio_detail *rio_detail_ptr = NULL; | |
f7625980 | 475 | |
2fd39aa7 | 476 | list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) { |
1da177e4 LT |
477 | opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num); |
478 | if (!opt_rio_ptr) { | |
f5afe806 | 479 | opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL); |
1da177e4 LT |
480 | if (!opt_rio_ptr) |
481 | return -ENOMEM; | |
1da177e4 LT |
482 | opt_rio_ptr->rio_type = rio_detail_ptr->rio_type; |
483 | opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num; | |
484 | opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num; | |
485 | opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num; | |
486 | list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head); | |
f7625980 | 487 | } else { |
1da177e4 LT |
488 | opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num); |
489 | opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num); | |
f7625980 | 490 | } |
1da177e4 LT |
491 | } |
492 | print_opt_vg (); | |
f7625980 BH |
493 | return 0; |
494 | } | |
1da177e4 LT |
495 | |
496 | /* | |
a8d2dbd3 | 497 | * reorganizing linked list of expansion box |
1da177e4 LT |
498 | */ |
499 | static struct opt_rio_lo *search_opt_lo (u8 chassis_num) | |
500 | { | |
501 | struct opt_rio_lo *ptr; | |
2fd39aa7 | 502 | list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) { |
1da177e4 LT |
503 | if (ptr->chassis_num == chassis_num) |
504 | return ptr; | |
f7625980 | 505 | } |
1da177e4 LT |
506 | return NULL; |
507 | } | |
508 | ||
509 | static int combine_wpg_for_expansion (void) | |
510 | { | |
511 | struct opt_rio_lo *opt_rio_lo_ptr = NULL; | |
512 | struct rio_detail *rio_detail_ptr = NULL; | |
f7625980 | 513 | |
2fd39aa7 | 514 | list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) { |
1da177e4 LT |
515 | opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num); |
516 | if (!opt_rio_lo_ptr) { | |
f5afe806 | 517 | opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL); |
1da177e4 LT |
518 | if (!opt_rio_lo_ptr) |
519 | return -ENOMEM; | |
1da177e4 LT |
520 | opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type; |
521 | opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num; | |
522 | opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num; | |
523 | opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num; | |
524 | opt_rio_lo_ptr->pack_count = 1; | |
f7625980 | 525 | |
1da177e4 | 526 | list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head); |
f7625980 | 527 | } else { |
1da177e4 LT |
528 | opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num); |
529 | opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num); | |
530 | opt_rio_lo_ptr->pack_count = 2; | |
f7625980 | 531 | } |
1da177e4 | 532 | } |
f7625980 | 533 | return 0; |
1da177e4 | 534 | } |
f7625980 | 535 | |
1da177e4 LT |
536 | |
537 | /* Since we don't know the max slot number per each chassis, hence go | |
538 | * through the list of all chassis to find out the range | |
f7625980 BH |
539 | * Arguments: slot_num, 1st slot number of the chassis we think we are on, |
540 | * var (0 = chassis, 1 = expansion box) | |
1da177e4 LT |
541 | */ |
542 | static int first_slot_num (u8 slot_num, u8 first_slot, u8 var) | |
543 | { | |
544 | struct opt_rio *opt_vg_ptr = NULL; | |
545 | struct opt_rio_lo *opt_lo_ptr = NULL; | |
1da177e4 LT |
546 | int rc = 0; |
547 | ||
548 | if (!var) { | |
2fd39aa7 | 549 | list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) { |
f7625980 | 550 | if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) { |
1da177e4 LT |
551 | rc = -ENODEV; |
552 | break; | |
553 | } | |
554 | } | |
555 | } else { | |
2fd39aa7 | 556 | list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) { |
1da177e4 LT |
557 | if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) { |
558 | rc = -ENODEV; | |
559 | break; | |
560 | } | |
561 | } | |
562 | } | |
563 | return rc; | |
564 | } | |
565 | ||
3c78bc61 | 566 | static struct opt_rio_lo *find_rxe_num (u8 slot_num) |
1da177e4 LT |
567 | { |
568 | struct opt_rio_lo *opt_lo_ptr; | |
1da177e4 | 569 | |
2fd39aa7 | 570 | list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) { |
1da177e4 | 571 | //check to see if this slot_num belongs to expansion box |
f7625980 | 572 | if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1))) |
1da177e4 LT |
573 | return opt_lo_ptr; |
574 | } | |
575 | return NULL; | |
576 | } | |
577 | ||
3c78bc61 | 578 | static struct opt_rio *find_chassis_num (u8 slot_num) |
1da177e4 LT |
579 | { |
580 | struct opt_rio *opt_vg_ptr; | |
1da177e4 | 581 | |
2fd39aa7 | 582 | list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) { |
f7625980 BH |
583 | //check to see if this slot_num belongs to chassis |
584 | if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0))) | |
1da177e4 LT |
585 | return opt_vg_ptr; |
586 | } | |
587 | return NULL; | |
588 | } | |
589 | ||
590 | /* This routine will find out how many slots are in the chassis, so that | |
591 | * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc | |
592 | */ | |
593 | static u8 calculate_first_slot (u8 slot_num) | |
594 | { | |
595 | u8 first_slot = 1; | |
3c78bc61 | 596 | struct slot *slot_cur; |
f7625980 | 597 | |
2fd39aa7 | 598 | list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 | 599 | if (slot_cur->ctrl) { |
f7625980 | 600 | if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num)) |
1da177e4 LT |
601 | first_slot = slot_cur->ctrl->ending_slot_num; |
602 | } | |
f7625980 | 603 | } |
1da177e4 LT |
604 | return first_slot + 1; |
605 | ||
606 | } | |
a32615a1 AC |
607 | |
608 | #define SLOT_NAME_SIZE 30 | |
609 | ||
3c78bc61 | 610 | static char *create_file_name (struct slot *slot_cur) |
1da177e4 LT |
611 | { |
612 | struct opt_rio *opt_vg_ptr = NULL; | |
613 | struct opt_rio_lo *opt_lo_ptr = NULL; | |
a32615a1 | 614 | static char str[SLOT_NAME_SIZE]; |
1da177e4 LT |
615 | int which = 0; /* rxe = 1, chassis = 0 */ |
616 | u8 number = 1; /* either chassis or rxe # */ | |
617 | u8 first_slot = 1; | |
618 | u8 slot_num; | |
619 | u8 flag = 0; | |
620 | ||
621 | if (!slot_cur) { | |
622 | err ("Structure passed is empty\n"); | |
623 | return NULL; | |
624 | } | |
f7625980 | 625 | |
1da177e4 LT |
626 | slot_num = slot_cur->number; |
627 | ||
628 | memset (str, 0, sizeof(str)); | |
f7625980 | 629 | |
1da177e4 LT |
630 | if (rio_table_ptr) { |
631 | if (rio_table_ptr->ver_num == 3) { | |
632 | opt_vg_ptr = find_chassis_num (slot_num); | |
633 | opt_lo_ptr = find_rxe_num (slot_num); | |
634 | } | |
635 | } | |
636 | if (opt_vg_ptr) { | |
637 | if (opt_lo_ptr) { | |
638 | if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) { | |
639 | number = opt_lo_ptr->chassis_num; | |
640 | first_slot = opt_lo_ptr->first_slot_num; | |
641 | which = 1; /* it is RXE */ | |
642 | } else { | |
643 | first_slot = opt_vg_ptr->first_slot_num; | |
644 | number = opt_vg_ptr->chassis_num; | |
645 | which = 0; | |
646 | } | |
647 | } else { | |
648 | first_slot = opt_vg_ptr->first_slot_num; | |
649 | number = opt_vg_ptr->chassis_num; | |
650 | which = 0; | |
651 | } | |
652 | ++flag; | |
653 | } else if (opt_lo_ptr) { | |
654 | number = opt_lo_ptr->chassis_num; | |
655 | first_slot = opt_lo_ptr->first_slot_num; | |
656 | which = 1; | |
657 | ++flag; | |
658 | } else if (rio_table_ptr) { | |
659 | if (rio_table_ptr->ver_num == 3) { | |
660 | /* if both NULL and we DO have correct RIO table in BIOS */ | |
661 | return NULL; | |
662 | } | |
f7625980 | 663 | } |
1da177e4 LT |
664 | if (!flag) { |
665 | if (slot_cur->ctrl->ctlr_type == 4) { | |
666 | first_slot = calculate_first_slot (slot_num); | |
667 | which = 1; | |
668 | } else { | |
669 | which = 0; | |
670 | } | |
671 | } | |
672 | ||
673 | sprintf(str, "%s%dslot%d", | |
674 | which == 0 ? "chassis" : "rxe", | |
675 | number, slot_num - first_slot + 1); | |
676 | return str; | |
677 | } | |
678 | ||
679 | static int fillslotinfo(struct hotplug_slot *hotplug_slot) | |
680 | { | |
681 | struct slot *slot; | |
682 | int rc = 0; | |
683 | ||
684 | if (!hotplug_slot || !hotplug_slot->private) | |
685 | return -EINVAL; | |
686 | ||
687 | slot = hotplug_slot->private; | |
688 | rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL); | |
689 | if (rc) | |
690 | return rc; | |
691 | ||
692 | // power - enabled:1 not:0 | |
693 | hotplug_slot->info->power_status = SLOT_POWER(slot->status); | |
694 | ||
695 | // attention - off:0, on:1, blinking:2 | |
696 | hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status); | |
697 | ||
698 | // latch - open:1 closed:0 | |
699 | hotplug_slot->info->latch_status = SLOT_LATCH(slot->status); | |
700 | ||
701 | // pci board - present:1 not:0 | |
702 | if (SLOT_PRESENT (slot->status)) | |
703 | hotplug_slot->info->adapter_status = 1; | |
704 | else | |
705 | hotplug_slot->info->adapter_status = 0; | |
706 | /* | |
707 | if (slot->bus_on->supported_bus_mode | |
708 | && (slot->bus_on->supported_speed == BUS_SPEED_66)) | |
709 | hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX; | |
710 | else | |
711 | hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed; | |
712 | */ | |
713 | ||
714 | return rc; | |
715 | } | |
716 | ||
717 | static void release_slot(struct hotplug_slot *hotplug_slot) | |
718 | { | |
719 | struct slot *slot; | |
720 | ||
721 | if (!hotplug_slot || !hotplug_slot->private) | |
722 | return; | |
723 | ||
724 | slot = hotplug_slot->private; | |
725 | kfree(slot->hotplug_slot->info); | |
1da177e4 LT |
726 | kfree(slot->hotplug_slot); |
727 | slot->ctrl = NULL; | |
728 | slot->bus_on = NULL; | |
729 | ||
730 | /* we don't want to actually remove the resources, since free_resources will do just that */ | |
731 | ibmphp_unconfigure_card(&slot, -1); | |
732 | ||
733 | kfree (slot); | |
734 | } | |
735 | ||
736 | static struct pci_driver ibmphp_driver; | |
737 | ||
738 | /* | |
739 | * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of | |
740 | * each hpc from physical address to a list of hot plug controllers based on | |
741 | * hpc descriptors. | |
742 | */ | |
743 | static int __init ebda_rsrc_controller (void) | |
744 | { | |
745 | u16 addr, addr_slot, addr_bus; | |
746 | u8 ctlr_id, temp, bus_index; | |
747 | u16 ctlr, slot, bus; | |
748 | u16 slot_num, bus_num, index; | |
749 | struct hotplug_slot *hp_slot_ptr; | |
750 | struct controller *hpc_ptr; | |
751 | struct ebda_hpc_bus *bus_ptr; | |
752 | struct ebda_hpc_slot *slot_ptr; | |
753 | struct bus_info *bus_info_ptr1, *bus_info_ptr2; | |
754 | int rc; | |
755 | struct slot *tmp_slot; | |
a32615a1 | 756 | char name[SLOT_NAME_SIZE]; |
1da177e4 LT |
757 | |
758 | addr = hpc_list_ptr->phys_addr; | |
759 | for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) { | |
760 | bus_index = 1; | |
761 | ctlr_id = readb (io_mem + addr); | |
762 | addr += 1; | |
763 | slot_num = readb (io_mem + addr); | |
764 | ||
765 | addr += 1; | |
766 | addr_slot = addr; /* offset of slot structure */ | |
767 | addr += (slot_num * 4); | |
768 | ||
769 | bus_num = readb (io_mem + addr); | |
770 | ||
771 | addr += 1; | |
772 | addr_bus = addr; /* offset of bus */ | |
773 | addr += (bus_num * 9); /* offset of ctlr_type */ | |
774 | temp = readb (io_mem + addr); | |
775 | ||
776 | addr += 1; | |
777 | /* init hpc structure */ | |
778 | hpc_ptr = alloc_ebda_hpc (slot_num, bus_num); | |
779 | if (!hpc_ptr ) { | |
780 | rc = -ENOMEM; | |
781 | goto error_no_hpc; | |
782 | } | |
783 | hpc_ptr->ctlr_id = ctlr_id; | |
784 | hpc_ptr->ctlr_relative_id = ctlr; | |
785 | hpc_ptr->slot_count = slot_num; | |
786 | hpc_ptr->bus_count = bus_num; | |
367fa982 | 787 | debug ("now enter ctlr data structure ---\n"); |
1da177e4 LT |
788 | debug ("ctlr id: %x\n", ctlr_id); |
789 | debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id); | |
790 | debug ("count of slots controlled by this ctlr: %x\n", slot_num); | |
791 | debug ("count of buses controlled by this ctlr: %x\n", bus_num); | |
792 | ||
793 | /* init slot structure, fetch slot, bus, cap... */ | |
794 | slot_ptr = hpc_ptr->slots; | |
795 | for (slot = 0; slot < slot_num; slot++) { | |
796 | slot_ptr->slot_num = readb (io_mem + addr_slot); | |
797 | slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num); | |
798 | slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num); | |
799 | slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num); | |
800 | ||
f7625980 | 801 | // create bus_info lined list --- if only one slot per bus: slot_min = slot_max |
1da177e4 LT |
802 | |
803 | bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num); | |
804 | if (!bus_info_ptr2) { | |
f5afe806 | 805 | bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL); |
1da177e4 LT |
806 | if (!bus_info_ptr1) { |
807 | rc = -ENOMEM; | |
808 | goto error_no_hp_slot; | |
809 | } | |
1da177e4 LT |
810 | bus_info_ptr1->slot_min = slot_ptr->slot_num; |
811 | bus_info_ptr1->slot_max = slot_ptr->slot_num; | |
812 | bus_info_ptr1->slot_count += 1; | |
813 | bus_info_ptr1->busno = slot_ptr->slot_bus_num; | |
814 | bus_info_ptr1->index = bus_index++; | |
815 | bus_info_ptr1->current_speed = 0xff; | |
816 | bus_info_ptr1->current_bus_mode = 0xff; | |
f7625980 | 817 | |
1da177e4 | 818 | bus_info_ptr1->controller_id = hpc_ptr->ctlr_id; |
f7625980 | 819 | |
1da177e4 LT |
820 | list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head); |
821 | ||
822 | } else { | |
823 | bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num); | |
824 | bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num); | |
825 | bus_info_ptr2->slot_count += 1; | |
826 | ||
827 | } | |
828 | ||
829 | // end of creating the bus_info linked list | |
830 | ||
831 | slot_ptr++; | |
832 | addr_slot += 1; | |
833 | } | |
834 | ||
835 | /* init bus structure */ | |
836 | bus_ptr = hpc_ptr->buses; | |
837 | for (bus = 0; bus < bus_num; bus++) { | |
838 | bus_ptr->bus_num = readb (io_mem + addr_bus + bus); | |
839 | bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus); | |
840 | bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1); | |
841 | ||
842 | bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2); | |
843 | ||
844 | bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3); | |
845 | ||
846 | bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4); | |
847 | ||
848 | bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num); | |
849 | if (bus_info_ptr2) { | |
850 | bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv; | |
851 | bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv; | |
852 | bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix; | |
853 | bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix; | |
f7625980 | 854 | bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix; |
1da177e4 LT |
855 | } |
856 | bus_ptr++; | |
857 | } | |
858 | ||
859 | hpc_ptr->ctlr_type = temp; | |
860 | ||
861 | switch (hpc_ptr->ctlr_type) { | |
862 | case 1: | |
863 | hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr); | |
864 | hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1); | |
865 | hpc_ptr->irq = readb (io_mem + addr + 2); | |
866 | addr += 3; | |
f7625980 | 867 | debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n", |
1da177e4 LT |
868 | hpc_ptr->u.pci_ctlr.bus, |
869 | hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq); | |
870 | break; | |
871 | ||
872 | case 0: | |
873 | hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr); | |
874 | hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2); | |
875 | if (!request_region (hpc_ptr->u.isa_ctlr.io_start, | |
876 | (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1), | |
877 | "ibmphp")) { | |
878 | rc = -ENODEV; | |
879 | goto error_no_hp_slot; | |
880 | } | |
881 | hpc_ptr->irq = readb (io_mem + addr + 4); | |
882 | addr += 5; | |
883 | break; | |
884 | ||
885 | case 2: | |
886 | case 4: | |
887 | hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr); | |
888 | hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4); | |
889 | hpc_ptr->irq = readb (io_mem + addr + 5); | |
890 | addr += 6; | |
891 | break; | |
892 | default: | |
893 | rc = -ENODEV; | |
894 | goto error_no_hp_slot; | |
895 | } | |
896 | ||
897 | //reorganize chassis' linked list | |
898 | combine_wpg_for_chassis (); | |
899 | combine_wpg_for_expansion (); | |
900 | hpc_ptr->revision = 0xff; | |
901 | hpc_ptr->options = 0xff; | |
902 | hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num; | |
903 | hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num; | |
904 | ||
905 | // register slots with hpc core as well as create linked list of ibm slot | |
906 | for (index = 0; index < hpc_ptr->slot_count; index++) { | |
907 | ||
f5afe806 | 908 | hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL); |
1da177e4 LT |
909 | if (!hp_slot_ptr) { |
910 | rc = -ENOMEM; | |
911 | goto error_no_hp_slot; | |
912 | } | |
1da177e4 | 913 | |
f5afe806 | 914 | hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); |
1da177e4 LT |
915 | if (!hp_slot_ptr->info) { |
916 | rc = -ENOMEM; | |
917 | goto error_no_hp_info; | |
918 | } | |
1da177e4 | 919 | |
f5afe806 | 920 | tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL); |
1da177e4 LT |
921 | if (!tmp_slot) { |
922 | rc = -ENOMEM; | |
923 | goto error_no_slot; | |
924 | } | |
1da177e4 | 925 | |
dc6712d1 | 926 | tmp_slot->flag = 1; |
1da177e4 LT |
927 | |
928 | tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap; | |
929 | if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX) | |
930 | tmp_slot->supported_speed = 3; | |
931 | else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX) | |
932 | tmp_slot->supported_speed = 2; | |
933 | else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX) | |
934 | tmp_slot->supported_speed = 1; | |
f7625980 | 935 | |
1da177e4 LT |
936 | if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP) |
937 | tmp_slot->supported_bus_mode = 1; | |
938 | else | |
939 | tmp_slot->supported_bus_mode = 0; | |
940 | ||
941 | ||
942 | tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num; | |
943 | ||
944 | bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num); | |
945 | if (!bus_info_ptr1) { | |
b91aac29 | 946 | kfree(tmp_slot); |
1da177e4 LT |
947 | rc = -ENODEV; |
948 | goto error; | |
949 | } | |
950 | tmp_slot->bus_on = bus_info_ptr1; | |
951 | bus_info_ptr1 = NULL; | |
952 | tmp_slot->ctrl = hpc_ptr; | |
953 | ||
954 | tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index; | |
955 | tmp_slot->number = hpc_ptr->slots[index].slot_num; | |
956 | tmp_slot->hotplug_slot = hp_slot_ptr; | |
957 | ||
958 | hp_slot_ptr->private = tmp_slot; | |
959 | hp_slot_ptr->release = release_slot; | |
960 | ||
961 | rc = fillslotinfo(hp_slot_ptr); | |
962 | if (rc) | |
963 | goto error; | |
964 | ||
965 | rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private); | |
966 | if (rc) | |
967 | goto error; | |
968 | hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops; | |
969 | ||
970 | // end of registering ibm slot with hotplug core | |
971 | ||
972 | list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head); | |
973 | } | |
974 | ||
975 | print_bus_info (); | |
976 | list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head ); | |
977 | ||
978 | } /* each hpc */ | |
979 | ||
2fd39aa7 | 980 | list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) { |
a32615a1 | 981 | snprintf(name, SLOT_NAME_SIZE, "%s", create_file_name(tmp_slot)); |
f46753c5 | 982 | pci_hp_register(tmp_slot->hotplug_slot, |
a32615a1 | 983 | pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name); |
1da177e4 LT |
984 | } |
985 | ||
986 | print_ebda_hpc (); | |
987 | print_ibm_slot (); | |
988 | return 0; | |
989 | ||
990 | error: | |
991 | kfree (hp_slot_ptr->private); | |
992 | error_no_slot: | |
1da177e4 LT |
993 | kfree (hp_slot_ptr->info); |
994 | error_no_hp_info: | |
995 | kfree (hp_slot_ptr); | |
996 | error_no_hp_slot: | |
997 | free_ebda_hpc (hpc_ptr); | |
998 | error_no_hpc: | |
999 | iounmap (io_mem); | |
1000 | return rc; | |
1001 | } | |
1002 | ||
f7625980 | 1003 | /* |
1da177e4 LT |
1004 | * map info (bus, devfun, start addr, end addr..) of i/o, memory, |
1005 | * pfm from the physical addr to a list of resource. | |
1006 | */ | |
1007 | static int __init ebda_rsrc_rsrc (void) | |
1008 | { | |
1009 | u16 addr; | |
1010 | short rsrc; | |
1011 | u8 type, rsrc_type; | |
1012 | struct ebda_pci_rsrc *rsrc_ptr; | |
1013 | ||
1014 | addr = rsrc_list_ptr->phys_addr; | |
1015 | debug ("now entering rsrc land\n"); | |
1016 | debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr); | |
1017 | ||
1018 | for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) { | |
1019 | type = readb (io_mem + addr); | |
1020 | ||
1021 | addr += 1; | |
1022 | rsrc_type = type & EBDA_RSRC_TYPE_MASK; | |
1023 | ||
1024 | if (rsrc_type == EBDA_IO_RSRC_TYPE) { | |
1025 | rsrc_ptr = alloc_ebda_pci_rsrc (); | |
1026 | if (!rsrc_ptr) { | |
1027 | iounmap (io_mem); | |
1028 | return -ENOMEM; | |
1029 | } | |
1030 | rsrc_ptr->rsrc_type = type; | |
1031 | ||
1032 | rsrc_ptr->bus_num = readb (io_mem + addr); | |
1033 | rsrc_ptr->dev_fun = readb (io_mem + addr + 1); | |
1034 | rsrc_ptr->start_addr = readw (io_mem + addr + 2); | |
1035 | rsrc_ptr->end_addr = readw (io_mem + addr + 4); | |
1036 | addr += 6; | |
1037 | ||
1038 | debug ("rsrc from io type ----\n"); | |
1039 | debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", | |
1040 | rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr); | |
1041 | ||
1042 | list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head); | |
1043 | } | |
1044 | ||
1045 | if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) { | |
1046 | rsrc_ptr = alloc_ebda_pci_rsrc (); | |
1047 | if (!rsrc_ptr ) { | |
1048 | iounmap (io_mem); | |
1049 | return -ENOMEM; | |
1050 | } | |
1051 | rsrc_ptr->rsrc_type = type; | |
1052 | ||
1053 | rsrc_ptr->bus_num = readb (io_mem + addr); | |
1054 | rsrc_ptr->dev_fun = readb (io_mem + addr + 1); | |
1055 | rsrc_ptr->start_addr = readl (io_mem + addr + 2); | |
1056 | rsrc_ptr->end_addr = readl (io_mem + addr + 6); | |
1057 | addr += 10; | |
1058 | ||
1059 | debug ("rsrc from mem or pfm ---\n"); | |
f7625980 | 1060 | debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", |
1da177e4 LT |
1061 | rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr); |
1062 | ||
1063 | list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head); | |
1064 | } | |
1065 | } | |
1066 | kfree (rsrc_list_ptr); | |
1067 | rsrc_list_ptr = NULL; | |
1068 | print_ebda_pci_rsrc (); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | u16 ibmphp_get_total_controllers (void) | |
1073 | { | |
1074 | return hpc_list_ptr->num_ctlrs; | |
1075 | } | |
1076 | ||
1077 | struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num) | |
1078 | { | |
1079 | struct slot *slot; | |
1da177e4 | 1080 | |
2fd39aa7 | 1081 | list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) { |
1da177e4 LT |
1082 | if (slot->number == physical_num) |
1083 | return slot; | |
1084 | } | |
1085 | return NULL; | |
1086 | } | |
1087 | ||
1088 | /* To find: | |
1089 | * - the smallest slot number | |
1090 | * - the largest slot number | |
1091 | * - the total number of the slots based on each bus | |
1092 | * (if only one slot per bus slot_min = slot_max ) | |
1093 | */ | |
1094 | struct bus_info *ibmphp_find_same_bus_num (u32 num) | |
1095 | { | |
1096 | struct bus_info *ptr; | |
1da177e4 | 1097 | |
2fd39aa7 | 1098 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
f7625980 | 1099 | if (ptr->busno == num) |
1da177e4 LT |
1100 | return ptr; |
1101 | } | |
1102 | return NULL; | |
1103 | } | |
1104 | ||
1105 | /* Finding relative bus number, in order to map corresponding | |
1106 | * bus register | |
1107 | */ | |
1108 | int ibmphp_get_bus_index (u8 num) | |
1109 | { | |
1110 | struct bus_info *ptr; | |
1da177e4 | 1111 | |
2fd39aa7 | 1112 | list_for_each_entry(ptr, &bus_info_head, bus_info_list) { |
f7625980 | 1113 | if (ptr->busno == num) |
1da177e4 LT |
1114 | return ptr->index; |
1115 | } | |
1116 | return -ENODEV; | |
1117 | } | |
1118 | ||
1119 | void ibmphp_free_bus_info_queue (void) | |
1120 | { | |
1121 | struct bus_info *bus_info; | |
1122 | struct list_head *list; | |
1123 | struct list_head *next; | |
1124 | ||
1125 | list_for_each_safe (list, next, &bus_info_head ) { | |
1126 | bus_info = list_entry (list, struct bus_info, bus_info_list); | |
1127 | kfree (bus_info); | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | void ibmphp_free_ebda_hpc_queue (void) | |
1132 | { | |
1133 | struct controller *controller = NULL; | |
1134 | struct list_head *list; | |
1135 | struct list_head *next; | |
1136 | int pci_flag = 0; | |
1137 | ||
1138 | list_for_each_safe (list, next, &ebda_hpc_head) { | |
1139 | controller = list_entry (list, struct controller, ebda_hpc_list); | |
1140 | if (controller->ctlr_type == 0) | |
1141 | release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1)); | |
1142 | else if ((controller->ctlr_type == 1) && (!pci_flag)) { | |
1143 | ++pci_flag; | |
1144 | pci_unregister_driver (&ibmphp_driver); | |
1145 | } | |
1146 | free_ebda_hpc (controller); | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | void ibmphp_free_ebda_pci_rsrc_queue (void) | |
1151 | { | |
1152 | struct ebda_pci_rsrc *resource; | |
1153 | struct list_head *list; | |
1154 | struct list_head *next; | |
1155 | ||
1156 | list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) { | |
1157 | resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list); | |
1158 | kfree (resource); | |
1159 | resource = NULL; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | static struct pci_device_id id_table[] = { | |
1164 | { | |
1165 | .vendor = PCI_VENDOR_ID_IBM, | |
1166 | .device = HPC_DEVICE_ID, | |
1167 | .subvendor = PCI_VENDOR_ID_IBM, | |
1168 | .subdevice = HPC_SUBSYSTEM_ID, | |
1169 | .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), | |
1170 | }, {} | |
f7625980 | 1171 | }; |
1da177e4 LT |
1172 | |
1173 | MODULE_DEVICE_TABLE(pci, id_table); | |
1174 | ||
1175 | static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *); | |
1176 | static struct pci_driver ibmphp_driver = { | |
1177 | .name = "ibmphp", | |
1178 | .id_table = id_table, | |
1179 | .probe = ibmphp_probe, | |
1180 | }; | |
1181 | ||
1182 | int ibmphp_register_pci (void) | |
1183 | { | |
1184 | struct controller *ctrl; | |
1da177e4 LT |
1185 | int rc = 0; |
1186 | ||
2fd39aa7 | 1187 | list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) { |
1da177e4 LT |
1188 | if (ctrl->ctlr_type == 1) { |
1189 | rc = pci_register_driver(&ibmphp_driver); | |
1190 | break; | |
1191 | } | |
1192 | } | |
1193 | return rc; | |
1194 | } | |
3c78bc61 | 1195 | static int ibmphp_probe (struct pci_dev *dev, const struct pci_device_id *ids) |
1da177e4 LT |
1196 | { |
1197 | struct controller *ctrl; | |
1da177e4 LT |
1198 | |
1199 | debug ("inside ibmphp_probe\n"); | |
f7625980 | 1200 | |
2fd39aa7 | 1201 | list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) { |
1da177e4 LT |
1202 | if (ctrl->ctlr_type == 1) { |
1203 | if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) { | |
1204 | ctrl->ctrl_dev = dev; | |
1205 | debug ("found device!!!\n"); | |
1206 | debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device); | |
1207 | return 0; | |
1208 | } | |
1209 | } | |
1210 | } | |
1211 | return -ENODEV; | |
1212 | } |