blob: c1abac8ab5c326847ca8cca0c2eb33b1fcae4e1e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#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 */
52LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
53LIST_HEAD (ibmphp_slot_head);
54
55/* Local variables */
56static struct ebda_hpc_list *hpc_list_ptr;
57static struct ebda_rsrc_list *rsrc_list_ptr;
58static struct rio_table_hdr *rio_table_ptr = NULL;
59static LIST_HEAD (ebda_hpc_head);
60static LIST_HEAD (bus_info_head);
61static LIST_HEAD (rio_vg_head);
62static LIST_HEAD (rio_lo_head);
63static LIST_HEAD (opt_vg_head);
64static LIST_HEAD (opt_lo_head);
65static void __iomem *io_mem;
66
67/* Local functions */
68static int ebda_rsrc_controller (void);
69static int ebda_rsrc_rsrc (void);
70static int ebda_rio_table (void);
71
72static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
73{
Eric Sesterhennf5afe802006-02-28 15:34:49 +010074 return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070075}
76
77static 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
Eric Sesterhennf5afe802006-02-28 15:34:49 +010083 controller = kzalloc(sizeof(struct controller), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 if (!controller)
85 goto error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Eric Sesterhennf5afe802006-02-28 15:34:49 +010087 slots = kcalloc(slot_count, sizeof(struct ebda_hpc_slot), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 if (!slots)
89 goto error_contr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 controller->slots = slots;
91
Eric Sesterhennf5afe802006-02-28 15:34:49 +010092 buses = kcalloc(bus_count, sizeof(struct ebda_hpc_bus), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 if (!buses)
94 goto error_slots;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 controller->buses = buses;
96
97 return controller;
98error_slots:
99 kfree(controller->slots);
100error_contr:
101 kfree(controller);
102error:
103 return NULL;
104}
105
106static void free_ebda_hpc (struct controller *controller)
107{
108 kfree (controller->slots);
109 kfree (controller->buses);
110 kfree (controller);
111}
112
113static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
114{
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100115 return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116}
117
118static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
119{
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100120 return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121}
122
123static void __init print_bus_info (void)
124{
125 struct bus_info *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700127 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800128 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800135 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
141 }
142}
143
144static void print_lo_info (void)
145{
146 struct rio_detail *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 debug ("print_lo_info ----\n");
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700148 list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800149 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156 }
157}
158
159static void print_vg_info (void)
160{
161 struct rio_detail *ptr;
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800162 debug ("%s ---\n", __func__);
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700163 list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800164 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170
171 }
172}
173
174static void __init print_ebda_pci_rsrc (void)
175{
176 struct ebda_pci_rsrc *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700178 list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800180 __func__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 }
182}
183
184static void __init print_ibm_slot (void)
185{
186 struct slot *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700188 list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800189 debug ("%s - slot_number: %x\n", __func__, ptr->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 }
191}
192
193static void __init print_opt_vg (void)
194{
195 struct opt_rio *ptr;
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800196 debug ("%s ---\n", __func__);
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700197 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800198 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 }
203}
204
205static void __init print_ebda_hpc (void)
206{
207 struct controller *hpc_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 u16 index;
209
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700210 list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 for (index = 0; index < hpc_ptr->slot_count; index++) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800212 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 }
217
218 for (index = 0; index < hpc_ptr->bus_count; index++) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800219 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 }
221
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800222 debug ("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 switch (hpc_ptr->ctlr_type) {
224 case 1:
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800225 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 break;
229
230 case 0:
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800231 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 break;
235
236 case 2:
237 case 4:
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800238 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 break;
242 }
243 }
244}
245
246int __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
Ingo Molnar15160712008-09-26 11:40:53 +0200263 io_mem = ioremap(ebda_seg<<4, 1024);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 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
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100355 rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 if (!rio_table_ptr)
357 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 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;
388error_nodev:
389 rc = -ENODEV;
390out:
391 iounmap (io_mem);
392 return rc;
393}
394
395/*
396 * map info of scalability details and rio details from physical address
397 */
398static 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++) {
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100409 rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 if (!rio_detail_ptr)
411 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 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 */
444static struct opt_rio *search_opt_vg (u8 chassis_num)
445{
446 struct opt_rio *ptr;
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700447 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 if (ptr->chassis_num == chassis_num)
449 return ptr;
450 }
451 return NULL;
452}
453
454static int __init combine_wpg_for_chassis (void)
455{
456 struct opt_rio *opt_rio_ptr = NULL;
457 struct rio_detail *rio_detail_ptr = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700459 list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
461 if (!opt_rio_ptr) {
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100462 opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 if (!opt_rio_ptr)
464 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 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/*
akpm@linux-foundation.orga8d2dbd2008-08-22 13:28:17 -0700480 * reorganizing linked list of expansion box
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 */
482static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
483{
484 struct opt_rio_lo *ptr;
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700485 list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 if (ptr->chassis_num == chassis_num)
487 return ptr;
488 }
489 return NULL;
490}
491
492static 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700497 list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
499 if (!opt_rio_lo_ptr) {
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100500 opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 if (!opt_rio_lo_ptr)
502 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 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 */
525static 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 int rc = 0;
530
531 if (!var) {
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700532 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 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 {
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700539 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 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
549static struct opt_rio_lo * find_rxe_num (u8 slot_num)
550{
551 struct opt_rio_lo *opt_lo_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700553 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 //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
561static struct opt_rio * find_chassis_num (u8 slot_num)
562{
563 struct opt_rio *opt_vg_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700565 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 //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 */
576static u8 calculate_first_slot (u8 slot_num)
577{
578 u8 first_slot = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 struct slot * slot_cur;
580
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700581 list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 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}
Alex Chianga32615a2008-10-20 17:41:33 -0600590
591#define SLOT_NAME_SIZE 30
592
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593static 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;
Alex Chianga32615a2008-10-20 17:41:33 -0600597 static char str[SLOT_NAME_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 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
662static 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
700static 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 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
719static 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 */
726static 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;
Alex Chianga32615a2008-10-20 17:41:33 -0600739 char name[SLOT_NAME_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740
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) {
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100788 bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 if (!bus_info_ptr1) {
790 rc = -ENOMEM;
791 goto error_no_hp_slot;
792 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 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
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100891 hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 if (!hp_slot_ptr) {
893 rc = -ENOMEM;
894 goto error_no_hp_slot;
895 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100897 hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 if (!hp_slot_ptr->info) {
899 rc = -ENOMEM;
900 goto error_no_hp_info;
901 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
Eric Sesterhennf5afe802006-02-28 15:34:49 +0100903 tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 if (!tmp_slot) {
905 rc = -ENOMEM;
906 goto error_no_slot;
907 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Kristen Accardidc6712d2006-03-14 16:24:47 -0800909 tmp_slot->flag = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910
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) {
Jesper Juhlb91aac22008-03-08 02:16:07 +0100929 kfree(tmp_slot);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930 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
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -0700963 list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) {
Alex Chianga32615a2008-10-20 17:41:33 -0600964 snprintf(name, SLOT_NAME_SIZE, "%s", create_file_name(tmp_slot));
Alex Chiangf46753c2008-06-10 15:28:50 -0600965 pci_hp_register(tmp_slot->hotplug_slot,
Alex Chianga32615a2008-10-20 17:41:33 -0600966 pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 }
968
969 print_ebda_hpc ();
970 print_ibm_slot ();
971 return 0;
972
973error:
974 kfree (hp_slot_ptr->private);
975error_no_slot:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976 kfree (hp_slot_ptr->info);
977error_no_hp_info:
978 kfree (hp_slot_ptr);
979error_no_hp_slot:
980 free_ebda_hpc (hpc_ptr);
981error_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 */
990static 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
1055u16 ibmphp_get_total_controllers (void)
1056{
1057 return hpc_list_ptr->num_ctlrs;
1058}
1059
1060struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1061{
1062 struct slot *slot;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -07001064 list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 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 */
1077struct bus_info *ibmphp_find_same_bus_num (u32 num)
1078{
1079 struct bus_info *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -07001081 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 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 */
1091int ibmphp_get_bus_index (u8 num)
1092{
1093 struct bus_info *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -07001095 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096 if (ptr->busno == num)
1097 return ptr->index;
1098 }
1099 return -ENODEV;
1100}
1101
1102void 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
1114void 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
1133void 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
1146static 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
1156MODULE_DEVICE_TABLE(pci, id_table);
1157
1158static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1159static struct pci_driver ibmphp_driver = {
1160 .name = "ibmphp",
1161 .id_table = id_table,
1162 .probe = ibmphp_probe,
1163};
1164
1165int ibmphp_register_pci (void)
1166{
1167 struct controller *ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168 int rc = 0;
1169
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -07001170 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 if (ctrl->ctlr_type == 1) {
1172 rc = pci_register_driver(&ibmphp_driver);
1173 break;
1174 }
1175 }
1176 return rc;
1177}
1178static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1179{
1180 struct controller *ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181
1182 debug ("inside ibmphp_probe\n");
1183
akpm@linux-foundation.org2fd39aa2008-08-22 13:30:14 -07001184 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 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