2 * IBM Hot Plug Controller Driver
4 * Written By: Tong Yu, IBM Corporation
6 * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
7 * Copyright (C) 2001-2003 IBM Corp.
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.
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
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.
26 * Send feedback to <gregkh@us.ibm.com>
30 #include <linux/module.h>
31 #include <linux/sched.h>
32 #include <linux/errno.h>
34 #include <linux/slab.h>
35 #include <linux/pci.h>
36 #include <linux/list.h>
37 #include <linux/init.h>
41 * POST builds data blocks(in this data block definition, a char-1
42 * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended
43 * BIOS Data Area which describe the configuration of the hot-plug
44 * controllers and resources used by the PCI Hot-Plug devices.
46 * This file walks EBDA, maps data block from physical addr,
47 * reconstruct linked lists about all system resource(MEM, PFM, IO)
48 * already assigned by POST, as well as linked lists about hot plug
49 * controllers (ctlr#, slot#, bus&slot features...)
53 LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
54 LIST_HEAD (ibmphp_slot_head);
57 static struct ebda_hpc_list *hpc_list_ptr;
58 static struct ebda_rsrc_list *rsrc_list_ptr;
59 static struct rio_table_hdr *rio_table_ptr = NULL;
60 static LIST_HEAD (ebda_hpc_head);
61 static LIST_HEAD (bus_info_head);
62 static LIST_HEAD (rio_vg_head);
63 static LIST_HEAD (rio_lo_head);
64 static LIST_HEAD (opt_vg_head);
65 static LIST_HEAD (opt_lo_head);
66 static void __iomem *io_mem;
69 static int ebda_rsrc_controller (void);
70 static int ebda_rsrc_rsrc (void);
71 static int ebda_rio_table (void);
73 static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
75 struct ebda_hpc_list *list;
77 list = kmalloc (sizeof (struct ebda_hpc_list), GFP_KERNEL);
80 memset (list, 0, sizeof (*list));
84 static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
86 struct controller *controller;
87 struct ebda_hpc_slot *slots;
88 struct ebda_hpc_bus *buses;
90 controller = kmalloc (sizeof (struct controller), GFP_KERNEL);
93 memset (controller, 0, sizeof (*controller));
95 slots = kmalloc (sizeof (struct ebda_hpc_slot) * slot_count, GFP_KERNEL);
98 memset (slots, 0, sizeof (*slots) * slot_count);
99 controller->slots = slots;
101 buses = kmalloc (sizeof (struct ebda_hpc_bus) * bus_count, GFP_KERNEL);
104 memset (buses, 0, sizeof (*buses) * bus_count);
105 controller->buses = buses;
109 kfree(controller->slots);
116 static void free_ebda_hpc (struct controller *controller)
118 kfree (controller->slots);
119 kfree (controller->buses);
123 static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
125 struct ebda_rsrc_list *list;
127 list = kmalloc (sizeof (struct ebda_rsrc_list), GFP_KERNEL);
130 memset (list, 0, sizeof (*list));
134 static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
136 struct ebda_pci_rsrc *resource;
138 resource = kmalloc (sizeof (struct ebda_pci_rsrc), GFP_KERNEL);
141 memset (resource, 0, sizeof (*resource));
145 static void __init print_bus_info (void)
147 struct bus_info *ptr;
148 struct list_head *ptr1;
150 list_for_each (ptr1, &bus_info_head) {
151 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
152 debug ("%s - slot_min = %x\n", __FUNCTION__, ptr->slot_min);
153 debug ("%s - slot_max = %x\n", __FUNCTION__, ptr->slot_max);
154 debug ("%s - slot_count = %x\n", __FUNCTION__, ptr->slot_count);
155 debug ("%s - bus# = %x\n", __FUNCTION__, ptr->busno);
156 debug ("%s - current_speed = %x\n", __FUNCTION__, ptr->current_speed);
157 debug ("%s - controller_id = %x\n", __FUNCTION__, ptr->controller_id);
159 debug ("%s - slots_at_33_conv = %x\n", __FUNCTION__, ptr->slots_at_33_conv);
160 debug ("%s - slots_at_66_conv = %x\n", __FUNCTION__, ptr->slots_at_66_conv);
161 debug ("%s - slots_at_66_pcix = %x\n", __FUNCTION__, ptr->slots_at_66_pcix);
162 debug ("%s - slots_at_100_pcix = %x\n", __FUNCTION__, ptr->slots_at_100_pcix);
163 debug ("%s - slots_at_133_pcix = %x\n", __FUNCTION__, ptr->slots_at_133_pcix);
168 static void print_lo_info (void)
170 struct rio_detail *ptr;
171 struct list_head *ptr1;
172 debug ("print_lo_info ----\n");
173 list_for_each (ptr1, &rio_lo_head) {
174 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
175 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
176 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
177 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
178 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
179 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
180 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
185 static void print_vg_info (void)
187 struct rio_detail *ptr;
188 struct list_head *ptr1;
189 debug ("%s ---\n", __FUNCTION__);
190 list_for_each (ptr1, &rio_vg_head) {
191 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
192 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
193 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
194 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
195 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
196 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
197 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
202 static void __init print_ebda_pci_rsrc (void)
204 struct ebda_pci_rsrc *ptr;
205 struct list_head *ptr1;
207 list_for_each (ptr1, &ibmphp_ebda_pci_rsrc_head) {
208 ptr = list_entry (ptr1, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
209 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
210 __FUNCTION__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
214 static void __init print_ibm_slot (void)
217 struct list_head *ptr1;
219 list_for_each (ptr1, &ibmphp_slot_head) {
220 ptr = list_entry (ptr1, struct slot, ibm_slot_list);
221 debug ("%s - slot_number: %x\n", __FUNCTION__, ptr->number);
225 static void __init print_opt_vg (void)
228 struct list_head *ptr1;
229 debug ("%s ---\n", __FUNCTION__);
230 list_for_each (ptr1, &opt_vg_head) {
231 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
232 debug ("%s - rio_type %x\n", __FUNCTION__, ptr->rio_type);
233 debug ("%s - chassis_num: %x\n", __FUNCTION__, ptr->chassis_num);
234 debug ("%s - first_slot_num: %x\n", __FUNCTION__, ptr->first_slot_num);
235 debug ("%s - middle_num: %x\n", __FUNCTION__, ptr->middle_num);
239 static void __init print_ebda_hpc (void)
241 struct controller *hpc_ptr;
242 struct list_head *ptr1;
245 list_for_each (ptr1, &ebda_hpc_head) {
247 hpc_ptr = list_entry (ptr1, struct controller, ebda_hpc_list);
249 for (index = 0; index < hpc_ptr->slot_count; index++) {
250 debug ("%s - physical slot#: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_num);
251 debug ("%s - pci bus# of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_bus_num);
252 debug ("%s - index into ctlr addr: %x\n", __FUNCTION__, hpc_ptr->slots[index].ctl_index);
253 debug ("%s - cap of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_cap);
256 for (index = 0; index < hpc_ptr->bus_count; index++) {
257 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __FUNCTION__, hpc_ptr->buses[index].bus_num);
260 debug ("%s - type of hpc: %x\n", __FUNCTION__, hpc_ptr->ctlr_type);
261 switch (hpc_ptr->ctlr_type) {
263 debug ("%s - bus: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.bus);
264 debug ("%s - dev_fun: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.dev_fun);
265 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
269 debug ("%s - io_start: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_start);
270 debug ("%s - io_end: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_end);
271 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
276 debug ("%s - wpegbbar: %lx\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
277 debug ("%s - i2c_addr: %x\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
278 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
284 int __init ibmphp_access_ebda (void)
286 u8 format, num_ctlrs, rio_complete, hs_complete;
287 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base;
294 io_mem = ioremap ((0x40 << 4) + 0x0e, 2);
297 ebda_seg = readw (io_mem);
299 debug ("returned ebda segment: %x\n", ebda_seg);
301 io_mem = ioremap (ebda_seg<<4, 65000);
307 offset = next_offset;
308 next_offset = readw (io_mem + offset); /* offset of next blk */
311 if (next_offset == 0) /* 0 indicate it's last blk */
313 blk_id = readw (io_mem + offset); /* this blk id */
316 /* check if it is hot swap block or rio block */
317 if (blk_id != 0x4853 && blk_id != 0x4752)
320 if (blk_id == 0x4853) {
321 debug ("now enter hot swap block---\n");
322 debug ("hot blk id: %x\n", blk_id);
323 format = readb (io_mem + offset);
328 debug ("hot blk format: %x\n", format);
329 /* hot swap sub blk */
333 re = readw (io_mem + sub_addr); /* next sub blk */
336 rc_id = readw (io_mem + sub_addr); /* sub blk id */
341 /* rc sub blk signature */
342 num_ctlrs = readb (io_mem + sub_addr);
345 hpc_list_ptr = alloc_ebda_hpc_list ();
350 hpc_list_ptr->format = format;
351 hpc_list_ptr->num_ctlrs = num_ctlrs;
352 hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */
353 debug ("info about hpc descriptor---\n");
354 debug ("hot blk format: %x\n", format);
355 debug ("num of controller: %x\n", num_ctlrs);
356 debug ("offset of hpc data structure enteries: %x\n ", sub_addr);
358 sub_addr = base + re; /* re sub blk */
359 /* FIXME: rc is never used/checked */
360 rc = readw (io_mem + sub_addr); /* next sub blk */
363 re_id = readw (io_mem + sub_addr); /* sub blk id */
369 /* signature of re */
370 num_entries = readw (io_mem + sub_addr);
372 sub_addr += 2; /* offset of RSRC_ENTRIES blk */
373 rsrc_list_ptr = alloc_ebda_rsrc_list ();
374 if (!rsrc_list_ptr ) {
378 rsrc_list_ptr->format = format;
379 rsrc_list_ptr->num_entries = num_entries;
380 rsrc_list_ptr->phys_addr = sub_addr;
382 debug ("info about rsrc descriptor---\n");
383 debug ("format: %x\n", format);
384 debug ("num of rsrc: %x\n", num_entries);
385 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr);
389 /* found rio table, blk_id == 0x4752 */
390 debug ("now enter io table ---\n");
391 debug ("rio blk id: %x\n", blk_id);
393 rio_table_ptr = kmalloc (sizeof (struct rio_table_hdr), GFP_KERNEL);
396 memset (rio_table_ptr, 0, sizeof (struct rio_table_hdr) );
397 rio_table_ptr->ver_num = readb (io_mem + offset);
398 rio_table_ptr->scal_count = readb (io_mem + offset + 1);
399 rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
400 rio_table_ptr->offset = offset +3 ;
402 debug("info about rio table hdr ---\n");
403 debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ",
404 rio_table_ptr->ver_num, rio_table_ptr->scal_count,
405 rio_table_ptr->riodev_count, rio_table_ptr->offset);
411 if (!hs_complete && !rio_complete)
415 if (rio_complete && rio_table_ptr->ver_num == 3) {
416 rc = ebda_rio_table ();
421 rc = ebda_rsrc_controller ();
425 rc = ebda_rsrc_rsrc ();
435 * map info of scalability details and rio details from physical address
437 static int __init ebda_rio_table (void)
441 struct rio_detail *rio_detail_ptr;
443 offset = rio_table_ptr->offset;
444 offset += 12 * rio_table_ptr->scal_count;
446 // we do concern about rio details
447 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
448 rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL);
451 memset (rio_detail_ptr, 0, sizeof (struct rio_detail));
452 rio_detail_ptr->rio_node_id = readb (io_mem + offset);
453 rio_detail_ptr->bbar = readl (io_mem + offset + 1);
454 rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
455 rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
456 rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
457 rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
458 rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
459 rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
460 rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
461 rio_detail_ptr->status = readb (io_mem + offset + 12);
462 rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
463 rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
464 // 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);
465 //create linked list of chassis
466 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
467 list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
468 //create linked list of expansion box
469 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
470 list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
473 kfree (rio_detail_ptr);
482 * reorganizing linked list of chassis
484 static struct opt_rio *search_opt_vg (u8 chassis_num)
487 struct list_head *ptr1;
488 list_for_each (ptr1, &opt_vg_head) {
489 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
490 if (ptr->chassis_num == chassis_num)
496 static int __init combine_wpg_for_chassis (void)
498 struct opt_rio *opt_rio_ptr = NULL;
499 struct rio_detail *rio_detail_ptr = NULL;
500 struct list_head *list_head_ptr = NULL;
502 list_for_each (list_head_ptr, &rio_vg_head) {
503 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
504 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
506 opt_rio_ptr = (struct opt_rio *) kmalloc (sizeof (struct opt_rio), GFP_KERNEL);
509 memset (opt_rio_ptr, 0, sizeof (struct opt_rio));
510 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
511 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
512 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
513 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
514 list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
516 opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
517 opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
525 * reorgnizing linked list of expansion box
527 static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
529 struct opt_rio_lo *ptr;
530 struct list_head *ptr1;
531 list_for_each (ptr1, &opt_lo_head) {
532 ptr = list_entry (ptr1, struct opt_rio_lo, opt_rio_lo_list);
533 if (ptr->chassis_num == chassis_num)
539 static int combine_wpg_for_expansion (void)
541 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
542 struct rio_detail *rio_detail_ptr = NULL;
543 struct list_head *list_head_ptr = NULL;
545 list_for_each (list_head_ptr, &rio_lo_head) {
546 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
547 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
548 if (!opt_rio_lo_ptr) {
549 opt_rio_lo_ptr = (struct opt_rio_lo *) kmalloc (sizeof (struct opt_rio_lo), GFP_KERNEL);
552 memset (opt_rio_lo_ptr, 0, sizeof (struct opt_rio_lo));
553 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
554 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
555 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
556 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
557 opt_rio_lo_ptr->pack_count = 1;
559 list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
561 opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
562 opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
563 opt_rio_lo_ptr->pack_count = 2;
570 /* Since we don't know the max slot number per each chassis, hence go
571 * through the list of all chassis to find out the range
572 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
573 * var (0 = chassis, 1 = expansion box)
575 static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
577 struct opt_rio *opt_vg_ptr = NULL;
578 struct opt_rio_lo *opt_lo_ptr = NULL;
579 struct list_head *ptr = NULL;
583 list_for_each (ptr, &opt_vg_head) {
584 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
585 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
591 list_for_each (ptr, &opt_lo_head) {
592 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
593 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
602 static struct opt_rio_lo * find_rxe_num (u8 slot_num)
604 struct opt_rio_lo *opt_lo_ptr;
605 struct list_head *ptr;
607 list_for_each (ptr, &opt_lo_head) {
608 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
609 //check to see if this slot_num belongs to expansion box
610 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
616 static struct opt_rio * find_chassis_num (u8 slot_num)
618 struct opt_rio *opt_vg_ptr;
619 struct list_head *ptr;
621 list_for_each (ptr, &opt_vg_head) {
622 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
623 //check to see if this slot_num belongs to chassis
624 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
630 /* This routine will find out how many slots are in the chassis, so that
631 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
633 static u8 calculate_first_slot (u8 slot_num)
636 struct list_head * list;
637 struct slot * slot_cur;
639 list_for_each (list, &ibmphp_slot_head) {
640 slot_cur = list_entry (list, struct slot, ibm_slot_list);
641 if (slot_cur->ctrl) {
642 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
643 first_slot = slot_cur->ctrl->ending_slot_num;
646 return first_slot + 1;
649 static char *create_file_name (struct slot * slot_cur)
651 struct opt_rio *opt_vg_ptr = NULL;
652 struct opt_rio_lo *opt_lo_ptr = NULL;
654 int which = 0; /* rxe = 1, chassis = 0 */
655 u8 number = 1; /* either chassis or rxe # */
661 err ("Structure passed is empty\n");
665 slot_num = slot_cur->number;
667 memset (str, 0, sizeof(str));
670 if (rio_table_ptr->ver_num == 3) {
671 opt_vg_ptr = find_chassis_num (slot_num);
672 opt_lo_ptr = find_rxe_num (slot_num);
677 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
678 number = opt_lo_ptr->chassis_num;
679 first_slot = opt_lo_ptr->first_slot_num;
680 which = 1; /* it is RXE */
682 first_slot = opt_vg_ptr->first_slot_num;
683 number = opt_vg_ptr->chassis_num;
687 first_slot = opt_vg_ptr->first_slot_num;
688 number = opt_vg_ptr->chassis_num;
692 } else if (opt_lo_ptr) {
693 number = opt_lo_ptr->chassis_num;
694 first_slot = opt_lo_ptr->first_slot_num;
697 } else if (rio_table_ptr) {
698 if (rio_table_ptr->ver_num == 3) {
699 /* if both NULL and we DO have correct RIO table in BIOS */
704 if (slot_cur->ctrl->ctlr_type == 4) {
705 first_slot = calculate_first_slot (slot_num);
712 sprintf(str, "%s%dslot%d",
713 which == 0 ? "chassis" : "rxe",
714 number, slot_num - first_slot + 1);
718 static int fillslotinfo(struct hotplug_slot *hotplug_slot)
723 if (!hotplug_slot || !hotplug_slot->private)
726 slot = hotplug_slot->private;
727 rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL);
731 // power - enabled:1 not:0
732 hotplug_slot->info->power_status = SLOT_POWER(slot->status);
734 // attention - off:0, on:1, blinking:2
735 hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status);
737 // latch - open:1 closed:0
738 hotplug_slot->info->latch_status = SLOT_LATCH(slot->status);
740 // pci board - present:1 not:0
741 if (SLOT_PRESENT (slot->status))
742 hotplug_slot->info->adapter_status = 1;
744 hotplug_slot->info->adapter_status = 0;
746 if (slot->bus_on->supported_bus_mode
747 && (slot->bus_on->supported_speed == BUS_SPEED_66))
748 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
750 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
756 static void release_slot(struct hotplug_slot *hotplug_slot)
760 if (!hotplug_slot || !hotplug_slot->private)
763 slot = hotplug_slot->private;
764 kfree(slot->hotplug_slot->info);
765 kfree(slot->hotplug_slot->name);
766 kfree(slot->hotplug_slot);
770 /* we don't want to actually remove the resources, since free_resources will do just that */
771 ibmphp_unconfigure_card(&slot, -1);
776 static struct pci_driver ibmphp_driver;
779 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
780 * each hpc from physical address to a list of hot plug controllers based on
783 static int __init ebda_rsrc_controller (void)
785 u16 addr, addr_slot, addr_bus;
786 u8 ctlr_id, temp, bus_index;
788 u16 slot_num, bus_num, index;
789 struct hotplug_slot *hp_slot_ptr;
790 struct controller *hpc_ptr;
791 struct ebda_hpc_bus *bus_ptr;
792 struct ebda_hpc_slot *slot_ptr;
793 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
795 struct slot *tmp_slot;
796 struct list_head *list;
798 addr = hpc_list_ptr->phys_addr;
799 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
801 ctlr_id = readb (io_mem + addr);
803 slot_num = readb (io_mem + addr);
806 addr_slot = addr; /* offset of slot structure */
807 addr += (slot_num * 4);
809 bus_num = readb (io_mem + addr);
812 addr_bus = addr; /* offset of bus */
813 addr += (bus_num * 9); /* offset of ctlr_type */
814 temp = readb (io_mem + addr);
817 /* init hpc structure */
818 hpc_ptr = alloc_ebda_hpc (slot_num, bus_num);
823 hpc_ptr->ctlr_id = ctlr_id;
824 hpc_ptr->ctlr_relative_id = ctlr;
825 hpc_ptr->slot_count = slot_num;
826 hpc_ptr->bus_count = bus_num;
827 debug ("now enter ctlr data struture ---\n");
828 debug ("ctlr id: %x\n", ctlr_id);
829 debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
830 debug ("count of slots controlled by this ctlr: %x\n", slot_num);
831 debug ("count of buses controlled by this ctlr: %x\n", bus_num);
833 /* init slot structure, fetch slot, bus, cap... */
834 slot_ptr = hpc_ptr->slots;
835 for (slot = 0; slot < slot_num; slot++) {
836 slot_ptr->slot_num = readb (io_mem + addr_slot);
837 slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num);
838 slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num);
839 slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num);
841 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
843 bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
844 if (!bus_info_ptr2) {
845 bus_info_ptr1 = (struct bus_info *) kmalloc (sizeof (struct bus_info), GFP_KERNEL);
846 if (!bus_info_ptr1) {
848 goto error_no_hp_slot;
850 memset (bus_info_ptr1, 0, sizeof (struct bus_info));
851 bus_info_ptr1->slot_min = slot_ptr->slot_num;
852 bus_info_ptr1->slot_max = slot_ptr->slot_num;
853 bus_info_ptr1->slot_count += 1;
854 bus_info_ptr1->busno = slot_ptr->slot_bus_num;
855 bus_info_ptr1->index = bus_index++;
856 bus_info_ptr1->current_speed = 0xff;
857 bus_info_ptr1->current_bus_mode = 0xff;
859 bus_info_ptr1->controller_id = hpc_ptr->ctlr_id;
861 list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head);
864 bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num);
865 bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num);
866 bus_info_ptr2->slot_count += 1;
870 // end of creating the bus_info linked list
876 /* init bus structure */
877 bus_ptr = hpc_ptr->buses;
878 for (bus = 0; bus < bus_num; bus++) {
879 bus_ptr->bus_num = readb (io_mem + addr_bus + bus);
880 bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus);
881 bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1);
883 bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2);
885 bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3);
887 bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4);
889 bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num);
891 bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv;
892 bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv;
893 bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix;
894 bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix;
895 bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix;
900 hpc_ptr->ctlr_type = temp;
902 switch (hpc_ptr->ctlr_type) {
904 hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
905 hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
906 hpc_ptr->irq = readb (io_mem + addr + 2);
908 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
909 hpc_ptr->u.pci_ctlr.bus,
910 hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq);
914 hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr);
915 hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2);
916 if (!request_region (hpc_ptr->u.isa_ctlr.io_start,
917 (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1),
920 goto error_no_hp_slot;
922 hpc_ptr->irq = readb (io_mem + addr + 4);
928 hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
929 hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
930 hpc_ptr->irq = readb (io_mem + addr + 5);
935 goto error_no_hp_slot;
938 //reorganize chassis' linked list
939 combine_wpg_for_chassis ();
940 combine_wpg_for_expansion ();
941 hpc_ptr->revision = 0xff;
942 hpc_ptr->options = 0xff;
943 hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
944 hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num;
946 // register slots with hpc core as well as create linked list of ibm slot
947 for (index = 0; index < hpc_ptr->slot_count; index++) {
949 hp_slot_ptr = kmalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
952 goto error_no_hp_slot;
954 memset(hp_slot_ptr, 0, sizeof(*hp_slot_ptr));
956 hp_slot_ptr->info = kmalloc (sizeof(struct hotplug_slot_info), GFP_KERNEL);
957 if (!hp_slot_ptr->info) {
959 goto error_no_hp_info;
961 memset(hp_slot_ptr->info, 0, sizeof(struct hotplug_slot_info));
963 hp_slot_ptr->name = kmalloc(30, GFP_KERNEL);
964 if (!hp_slot_ptr->name) {
966 goto error_no_hp_name;
969 tmp_slot = kmalloc(sizeof(*tmp_slot), GFP_KERNEL);
974 memset(tmp_slot, 0, sizeof(*tmp_slot));
976 tmp_slot->flag = TRUE;
978 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
979 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
980 tmp_slot->supported_speed = 3;
981 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
982 tmp_slot->supported_speed = 2;
983 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
984 tmp_slot->supported_speed = 1;
986 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
987 tmp_slot->supported_bus_mode = 1;
989 tmp_slot->supported_bus_mode = 0;
992 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
994 bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num);
995 if (!bus_info_ptr1) {
999 tmp_slot->bus_on = bus_info_ptr1;
1000 bus_info_ptr1 = NULL;
1001 tmp_slot->ctrl = hpc_ptr;
1003 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
1004 tmp_slot->number = hpc_ptr->slots[index].slot_num;
1005 tmp_slot->hotplug_slot = hp_slot_ptr;
1007 hp_slot_ptr->private = tmp_slot;
1008 hp_slot_ptr->release = release_slot;
1010 rc = fillslotinfo(hp_slot_ptr);
1014 rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private);
1017 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
1019 // end of registering ibm slot with hotplug core
1021 list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
1025 list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
1029 list_for_each (list, &ibmphp_slot_head) {
1030 tmp_slot = list_entry (list, struct slot, ibm_slot_list);
1032 snprintf (tmp_slot->hotplug_slot->name, 30, "%s", create_file_name (tmp_slot));
1033 pci_hp_register (tmp_slot->hotplug_slot);
1041 kfree (hp_slot_ptr->private);
1043 kfree (hp_slot_ptr->name);
1045 kfree (hp_slot_ptr->info);
1047 kfree (hp_slot_ptr);
1049 free_ebda_hpc (hpc_ptr);
1056 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
1057 * pfm from the physical addr to a list of resource.
1059 static int __init ebda_rsrc_rsrc (void)
1064 struct ebda_pci_rsrc *rsrc_ptr;
1066 addr = rsrc_list_ptr->phys_addr;
1067 debug ("now entering rsrc land\n");
1068 debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1070 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1071 type = readb (io_mem + addr);
1074 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1076 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1077 rsrc_ptr = alloc_ebda_pci_rsrc ();
1082 rsrc_ptr->rsrc_type = type;
1084 rsrc_ptr->bus_num = readb (io_mem + addr);
1085 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1086 rsrc_ptr->start_addr = readw (io_mem + addr + 2);
1087 rsrc_ptr->end_addr = readw (io_mem + addr + 4);
1090 debug ("rsrc from io type ----\n");
1091 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1092 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1094 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1097 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1098 rsrc_ptr = alloc_ebda_pci_rsrc ();
1103 rsrc_ptr->rsrc_type = type;
1105 rsrc_ptr->bus_num = readb (io_mem + addr);
1106 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1107 rsrc_ptr->start_addr = readl (io_mem + addr + 2);
1108 rsrc_ptr->end_addr = readl (io_mem + addr + 6);
1111 debug ("rsrc from mem or pfm ---\n");
1112 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1113 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1115 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1118 kfree (rsrc_list_ptr);
1119 rsrc_list_ptr = NULL;
1120 print_ebda_pci_rsrc ();
1124 u16 ibmphp_get_total_controllers (void)
1126 return hpc_list_ptr->num_ctlrs;
1129 struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1132 struct list_head *list;
1134 list_for_each (list, &ibmphp_slot_head) {
1135 slot = list_entry (list, struct slot, ibm_slot_list);
1136 if (slot->number == physical_num)
1143 * - the smallest slot number
1144 * - the largest slot number
1145 * - the total number of the slots based on each bus
1146 * (if only one slot per bus slot_min = slot_max )
1148 struct bus_info *ibmphp_find_same_bus_num (u32 num)
1150 struct bus_info *ptr;
1151 struct list_head *ptr1;
1153 list_for_each (ptr1, &bus_info_head) {
1154 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1155 if (ptr->busno == num)
1161 /* Finding relative bus number, in order to map corresponding
1164 int ibmphp_get_bus_index (u8 num)
1166 struct bus_info *ptr;
1167 struct list_head *ptr1;
1169 list_for_each (ptr1, &bus_info_head) {
1170 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1171 if (ptr->busno == num)
1177 void ibmphp_free_bus_info_queue (void)
1179 struct bus_info *bus_info;
1180 struct list_head *list;
1181 struct list_head *next;
1183 list_for_each_safe (list, next, &bus_info_head ) {
1184 bus_info = list_entry (list, struct bus_info, bus_info_list);
1189 void ibmphp_free_ebda_hpc_queue (void)
1191 struct controller *controller = NULL;
1192 struct list_head *list;
1193 struct list_head *next;
1196 list_for_each_safe (list, next, &ebda_hpc_head) {
1197 controller = list_entry (list, struct controller, ebda_hpc_list);
1198 if (controller->ctlr_type == 0)
1199 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1200 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1202 pci_unregister_driver (&ibmphp_driver);
1204 free_ebda_hpc (controller);
1208 void ibmphp_free_ebda_pci_rsrc_queue (void)
1210 struct ebda_pci_rsrc *resource;
1211 struct list_head *list;
1212 struct list_head *next;
1214 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1215 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1221 static struct pci_device_id id_table[] = {
1223 .vendor = PCI_VENDOR_ID_IBM,
1224 .device = HPC_DEVICE_ID,
1225 .subvendor = PCI_VENDOR_ID_IBM,
1226 .subdevice = HPC_SUBSYSTEM_ID,
1227 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1231 MODULE_DEVICE_TABLE(pci, id_table);
1233 static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1234 static struct pci_driver ibmphp_driver = {
1236 .id_table = id_table,
1237 .probe = ibmphp_probe,
1240 int ibmphp_register_pci (void)
1242 struct controller *ctrl;
1243 struct list_head *tmp;
1246 list_for_each (tmp, &ebda_hpc_head) {
1247 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1248 if (ctrl->ctlr_type == 1) {
1249 rc = pci_register_driver(&ibmphp_driver);
1255 static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1257 struct controller *ctrl;
1258 struct list_head *tmp;
1260 debug ("inside ibmphp_probe\n");
1262 list_for_each (tmp, &ebda_hpc_head) {
1263 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1264 if (ctrl->ctlr_type == 1) {
1265 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1266 ctrl->ctrl_dev = dev;
1267 debug ("found device!!!\n");
1268 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);