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/errno.h>
33 #include <linux/slab.h>
34 #include <linux/pci.h>
35 #include <linux/list.h>
36 #include <linux/init.h>
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.
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...)
52 LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
53 LIST_HEAD (ibmphp_slot_head);
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;
68 static int ebda_rsrc_controller (void);
69 static int ebda_rsrc_rsrc (void);
70 static int ebda_rio_table (void);
72 static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
74 return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL);
77 static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
79 struct controller *controller;
80 struct ebda_hpc_slot *slots;
81 struct ebda_hpc_bus *buses;
83 controller = kzalloc(sizeof(struct controller), GFP_KERNEL);
87 slots = kcalloc(slot_count, sizeof(struct ebda_hpc_slot), GFP_KERNEL);
90 controller->slots = slots;
92 buses = kcalloc(bus_count, sizeof(struct ebda_hpc_bus), GFP_KERNEL);
95 controller->buses = buses;
99 kfree(controller->slots);
106 static void free_ebda_hpc (struct controller *controller)
108 kfree (controller->slots);
109 kfree (controller->buses);
113 static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
115 return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL);
118 static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
120 return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL);
123 static void __init print_bus_info (void)
125 struct bus_info *ptr;
127 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
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);
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);
144 static void print_lo_info (void)
146 struct rio_detail *ptr;
147 debug ("print_lo_info ----\n");
148 list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) {
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);
159 static void print_vg_info (void)
161 struct rio_detail *ptr;
162 debug ("%s ---\n", __func__);
163 list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) {
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);
174 static void __init print_ebda_pci_rsrc (void)
176 struct ebda_pci_rsrc *ptr;
178 list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) {
179 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
180 __func__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
184 static void __init print_ibm_slot (void)
188 list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) {
189 debug ("%s - slot_number: %x\n", __func__, ptr->number);
193 static void __init print_opt_vg (void)
196 debug ("%s ---\n", __func__);
197 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
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);
205 static void __init print_ebda_hpc (void)
207 struct controller *hpc_ptr;
210 list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) {
211 for (index = 0; index < hpc_ptr->slot_count; index++) {
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);
218 for (index = 0; index < hpc_ptr->bus_count; index++) {
219 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num);
222 debug ("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type);
223 switch (hpc_ptr->ctlr_type) {
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);
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);
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);
246 int __init ibmphp_access_ebda (void)
248 u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz;
249 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base;
256 io_mem = ioremap ((0x40 << 4) + 0x0e, 2);
259 ebda_seg = readw (io_mem);
261 debug ("returned ebda segment: %x\n", ebda_seg);
263 io_mem = ioremap(ebda_seg<<4, 1);
264 ebda_sz = readb(io_mem);
266 debug("ebda size: %d(KiB)\n", ebda_sz);
270 io_mem = ioremap(ebda_seg<<4, (ebda_sz * 1024));
276 offset = next_offset;
277 next_offset = readw (io_mem + offset); /* offset of next blk */
280 if (next_offset == 0) /* 0 indicate it's last blk */
282 blk_id = readw (io_mem + offset); /* this blk id */
285 /* check if it is hot swap block or rio block */
286 if (blk_id != 0x4853 && blk_id != 0x4752)
289 if (blk_id == 0x4853) {
290 debug ("now enter hot swap block---\n");
291 debug ("hot blk id: %x\n", blk_id);
292 format = readb (io_mem + offset);
297 debug ("hot blk format: %x\n", format);
298 /* hot swap sub blk */
302 re = readw (io_mem + sub_addr); /* next sub blk */
305 rc_id = readw (io_mem + sub_addr); /* sub blk id */
310 /* rc sub blk signature */
311 num_ctlrs = readb (io_mem + sub_addr);
314 hpc_list_ptr = alloc_ebda_hpc_list ();
319 hpc_list_ptr->format = format;
320 hpc_list_ptr->num_ctlrs = num_ctlrs;
321 hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */
322 debug ("info about hpc descriptor---\n");
323 debug ("hot blk format: %x\n", format);
324 debug ("num of controller: %x\n", num_ctlrs);
325 debug ("offset of hpc data structure enteries: %x\n ", sub_addr);
327 sub_addr = base + re; /* re sub blk */
328 /* FIXME: rc is never used/checked */
329 rc = readw (io_mem + sub_addr); /* next sub blk */
332 re_id = readw (io_mem + sub_addr); /* sub blk id */
338 /* signature of re */
339 num_entries = readw (io_mem + sub_addr);
341 sub_addr += 2; /* offset of RSRC_ENTRIES blk */
342 rsrc_list_ptr = alloc_ebda_rsrc_list ();
343 if (!rsrc_list_ptr ) {
347 rsrc_list_ptr->format = format;
348 rsrc_list_ptr->num_entries = num_entries;
349 rsrc_list_ptr->phys_addr = sub_addr;
351 debug ("info about rsrc descriptor---\n");
352 debug ("format: %x\n", format);
353 debug ("num of rsrc: %x\n", num_entries);
354 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr);
358 /* found rio table, blk_id == 0x4752 */
359 debug ("now enter io table ---\n");
360 debug ("rio blk id: %x\n", blk_id);
362 rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL);
365 rio_table_ptr->ver_num = readb (io_mem + offset);
366 rio_table_ptr->scal_count = readb (io_mem + offset + 1);
367 rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
368 rio_table_ptr->offset = offset +3 ;
370 debug("info about rio table hdr ---\n");
371 debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ",
372 rio_table_ptr->ver_num, rio_table_ptr->scal_count,
373 rio_table_ptr->riodev_count, rio_table_ptr->offset);
379 if (!hs_complete && !rio_complete)
383 if (rio_complete && rio_table_ptr->ver_num == 3) {
384 rc = ebda_rio_table ();
389 rc = ebda_rsrc_controller ();
393 rc = ebda_rsrc_rsrc ();
403 * map info of scalability details and rio details from physical address
405 static int __init ebda_rio_table (void)
409 struct rio_detail *rio_detail_ptr;
411 offset = rio_table_ptr->offset;
412 offset += 12 * rio_table_ptr->scal_count;
414 // we do concern about rio details
415 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
416 rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL);
419 rio_detail_ptr->rio_node_id = readb (io_mem + offset);
420 rio_detail_ptr->bbar = readl (io_mem + offset + 1);
421 rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
422 rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
423 rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
424 rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
425 rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
426 rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
427 rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
428 rio_detail_ptr->status = readb (io_mem + offset + 12);
429 rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
430 rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
431 // 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);
432 //create linked list of chassis
433 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
434 list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
435 //create linked list of expansion box
436 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
437 list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
440 kfree (rio_detail_ptr);
449 * reorganizing linked list of chassis
451 static struct opt_rio *search_opt_vg (u8 chassis_num)
454 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
455 if (ptr->chassis_num == chassis_num)
461 static int __init combine_wpg_for_chassis (void)
463 struct opt_rio *opt_rio_ptr = NULL;
464 struct rio_detail *rio_detail_ptr = NULL;
466 list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) {
467 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
469 opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL);
472 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
473 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
474 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
475 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
476 list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
478 opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
479 opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
487 * reorganizing linked list of expansion box
489 static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
491 struct opt_rio_lo *ptr;
492 list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) {
493 if (ptr->chassis_num == chassis_num)
499 static int combine_wpg_for_expansion (void)
501 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
502 struct rio_detail *rio_detail_ptr = NULL;
504 list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) {
505 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
506 if (!opt_rio_lo_ptr) {
507 opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL);
510 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
511 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
512 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
513 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
514 opt_rio_lo_ptr->pack_count = 1;
516 list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
518 opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
519 opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
520 opt_rio_lo_ptr->pack_count = 2;
527 /* Since we don't know the max slot number per each chassis, hence go
528 * through the list of all chassis to find out the range
529 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
530 * var (0 = chassis, 1 = expansion box)
532 static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
534 struct opt_rio *opt_vg_ptr = NULL;
535 struct opt_rio_lo *opt_lo_ptr = NULL;
539 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
540 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
546 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
547 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
556 static struct opt_rio_lo * find_rxe_num (u8 slot_num)
558 struct opt_rio_lo *opt_lo_ptr;
560 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
561 //check to see if this slot_num belongs to expansion box
562 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
568 static struct opt_rio * find_chassis_num (u8 slot_num)
570 struct opt_rio *opt_vg_ptr;
572 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
573 //check to see if this slot_num belongs to chassis
574 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
580 /* This routine will find out how many slots are in the chassis, so that
581 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
583 static u8 calculate_first_slot (u8 slot_num)
586 struct slot * slot_cur;
588 list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) {
589 if (slot_cur->ctrl) {
590 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
591 first_slot = slot_cur->ctrl->ending_slot_num;
594 return first_slot + 1;
598 #define SLOT_NAME_SIZE 30
600 static char *create_file_name (struct slot * slot_cur)
602 struct opt_rio *opt_vg_ptr = NULL;
603 struct opt_rio_lo *opt_lo_ptr = NULL;
604 static char str[SLOT_NAME_SIZE];
605 int which = 0; /* rxe = 1, chassis = 0 */
606 u8 number = 1; /* either chassis or rxe # */
612 err ("Structure passed is empty\n");
616 slot_num = slot_cur->number;
618 memset (str, 0, sizeof(str));
621 if (rio_table_ptr->ver_num == 3) {
622 opt_vg_ptr = find_chassis_num (slot_num);
623 opt_lo_ptr = find_rxe_num (slot_num);
628 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
629 number = opt_lo_ptr->chassis_num;
630 first_slot = opt_lo_ptr->first_slot_num;
631 which = 1; /* it is RXE */
633 first_slot = opt_vg_ptr->first_slot_num;
634 number = opt_vg_ptr->chassis_num;
638 first_slot = opt_vg_ptr->first_slot_num;
639 number = opt_vg_ptr->chassis_num;
643 } else if (opt_lo_ptr) {
644 number = opt_lo_ptr->chassis_num;
645 first_slot = opt_lo_ptr->first_slot_num;
648 } else if (rio_table_ptr) {
649 if (rio_table_ptr->ver_num == 3) {
650 /* if both NULL and we DO have correct RIO table in BIOS */
655 if (slot_cur->ctrl->ctlr_type == 4) {
656 first_slot = calculate_first_slot (slot_num);
663 sprintf(str, "%s%dslot%d",
664 which == 0 ? "chassis" : "rxe",
665 number, slot_num - first_slot + 1);
669 static int fillslotinfo(struct hotplug_slot *hotplug_slot)
674 if (!hotplug_slot || !hotplug_slot->private)
677 slot = hotplug_slot->private;
678 rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL);
682 // power - enabled:1 not:0
683 hotplug_slot->info->power_status = SLOT_POWER(slot->status);
685 // attention - off:0, on:1, blinking:2
686 hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status);
688 // latch - open:1 closed:0
689 hotplug_slot->info->latch_status = SLOT_LATCH(slot->status);
691 // pci board - present:1 not:0
692 if (SLOT_PRESENT (slot->status))
693 hotplug_slot->info->adapter_status = 1;
695 hotplug_slot->info->adapter_status = 0;
697 if (slot->bus_on->supported_bus_mode
698 && (slot->bus_on->supported_speed == BUS_SPEED_66))
699 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
701 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
707 static void release_slot(struct hotplug_slot *hotplug_slot)
711 if (!hotplug_slot || !hotplug_slot->private)
714 slot = hotplug_slot->private;
715 kfree(slot->hotplug_slot->info);
716 kfree(slot->hotplug_slot);
720 /* we don't want to actually remove the resources, since free_resources will do just that */
721 ibmphp_unconfigure_card(&slot, -1);
726 static struct pci_driver ibmphp_driver;
729 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
730 * each hpc from physical address to a list of hot plug controllers based on
733 static int __init ebda_rsrc_controller (void)
735 u16 addr, addr_slot, addr_bus;
736 u8 ctlr_id, temp, bus_index;
738 u16 slot_num, bus_num, index;
739 struct hotplug_slot *hp_slot_ptr;
740 struct controller *hpc_ptr;
741 struct ebda_hpc_bus *bus_ptr;
742 struct ebda_hpc_slot *slot_ptr;
743 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
745 struct slot *tmp_slot;
746 char name[SLOT_NAME_SIZE];
748 addr = hpc_list_ptr->phys_addr;
749 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
751 ctlr_id = readb (io_mem + addr);
753 slot_num = readb (io_mem + addr);
756 addr_slot = addr; /* offset of slot structure */
757 addr += (slot_num * 4);
759 bus_num = readb (io_mem + addr);
762 addr_bus = addr; /* offset of bus */
763 addr += (bus_num * 9); /* offset of ctlr_type */
764 temp = readb (io_mem + addr);
767 /* init hpc structure */
768 hpc_ptr = alloc_ebda_hpc (slot_num, bus_num);
773 hpc_ptr->ctlr_id = ctlr_id;
774 hpc_ptr->ctlr_relative_id = ctlr;
775 hpc_ptr->slot_count = slot_num;
776 hpc_ptr->bus_count = bus_num;
777 debug ("now enter ctlr data struture ---\n");
778 debug ("ctlr id: %x\n", ctlr_id);
779 debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
780 debug ("count of slots controlled by this ctlr: %x\n", slot_num);
781 debug ("count of buses controlled by this ctlr: %x\n", bus_num);
783 /* init slot structure, fetch slot, bus, cap... */
784 slot_ptr = hpc_ptr->slots;
785 for (slot = 0; slot < slot_num; slot++) {
786 slot_ptr->slot_num = readb (io_mem + addr_slot);
787 slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num);
788 slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num);
789 slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num);
791 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
793 bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
794 if (!bus_info_ptr2) {
795 bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL);
796 if (!bus_info_ptr1) {
798 goto error_no_hp_slot;
800 bus_info_ptr1->slot_min = slot_ptr->slot_num;
801 bus_info_ptr1->slot_max = slot_ptr->slot_num;
802 bus_info_ptr1->slot_count += 1;
803 bus_info_ptr1->busno = slot_ptr->slot_bus_num;
804 bus_info_ptr1->index = bus_index++;
805 bus_info_ptr1->current_speed = 0xff;
806 bus_info_ptr1->current_bus_mode = 0xff;
808 bus_info_ptr1->controller_id = hpc_ptr->ctlr_id;
810 list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head);
813 bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num);
814 bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num);
815 bus_info_ptr2->slot_count += 1;
819 // end of creating the bus_info linked list
825 /* init bus structure */
826 bus_ptr = hpc_ptr->buses;
827 for (bus = 0; bus < bus_num; bus++) {
828 bus_ptr->bus_num = readb (io_mem + addr_bus + bus);
829 bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus);
830 bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1);
832 bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2);
834 bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3);
836 bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4);
838 bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num);
840 bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv;
841 bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv;
842 bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix;
843 bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix;
844 bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix;
849 hpc_ptr->ctlr_type = temp;
851 switch (hpc_ptr->ctlr_type) {
853 hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
854 hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
855 hpc_ptr->irq = readb (io_mem + addr + 2);
857 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
858 hpc_ptr->u.pci_ctlr.bus,
859 hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq);
863 hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr);
864 hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2);
865 if (!request_region (hpc_ptr->u.isa_ctlr.io_start,
866 (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1),
869 goto error_no_hp_slot;
871 hpc_ptr->irq = readb (io_mem + addr + 4);
877 hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
878 hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
879 hpc_ptr->irq = readb (io_mem + addr + 5);
884 goto error_no_hp_slot;
887 //reorganize chassis' linked list
888 combine_wpg_for_chassis ();
889 combine_wpg_for_expansion ();
890 hpc_ptr->revision = 0xff;
891 hpc_ptr->options = 0xff;
892 hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
893 hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num;
895 // register slots with hpc core as well as create linked list of ibm slot
896 for (index = 0; index < hpc_ptr->slot_count; index++) {
898 hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
901 goto error_no_hp_slot;
904 hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
905 if (!hp_slot_ptr->info) {
907 goto error_no_hp_info;
910 tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL);
918 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
919 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
920 tmp_slot->supported_speed = 3;
921 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
922 tmp_slot->supported_speed = 2;
923 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
924 tmp_slot->supported_speed = 1;
926 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
927 tmp_slot->supported_bus_mode = 1;
929 tmp_slot->supported_bus_mode = 0;
932 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
934 bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num);
935 if (!bus_info_ptr1) {
940 tmp_slot->bus_on = bus_info_ptr1;
941 bus_info_ptr1 = NULL;
942 tmp_slot->ctrl = hpc_ptr;
944 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
945 tmp_slot->number = hpc_ptr->slots[index].slot_num;
946 tmp_slot->hotplug_slot = hp_slot_ptr;
948 hp_slot_ptr->private = tmp_slot;
949 hp_slot_ptr->release = release_slot;
951 rc = fillslotinfo(hp_slot_ptr);
955 rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private);
958 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
960 // end of registering ibm slot with hotplug core
962 list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
966 list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
970 list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) {
971 snprintf(name, SLOT_NAME_SIZE, "%s", create_file_name(tmp_slot));
972 pci_hp_register(tmp_slot->hotplug_slot,
973 pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name);
981 kfree (hp_slot_ptr->private);
983 kfree (hp_slot_ptr->info);
987 free_ebda_hpc (hpc_ptr);
994 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
995 * pfm from the physical addr to a list of resource.
997 static int __init ebda_rsrc_rsrc (void)
1002 struct ebda_pci_rsrc *rsrc_ptr;
1004 addr = rsrc_list_ptr->phys_addr;
1005 debug ("now entering rsrc land\n");
1006 debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1008 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1009 type = readb (io_mem + addr);
1012 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1014 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1015 rsrc_ptr = alloc_ebda_pci_rsrc ();
1020 rsrc_ptr->rsrc_type = type;
1022 rsrc_ptr->bus_num = readb (io_mem + addr);
1023 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1024 rsrc_ptr->start_addr = readw (io_mem + addr + 2);
1025 rsrc_ptr->end_addr = readw (io_mem + addr + 4);
1028 debug ("rsrc from io type ----\n");
1029 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1030 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1032 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1035 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1036 rsrc_ptr = alloc_ebda_pci_rsrc ();
1041 rsrc_ptr->rsrc_type = type;
1043 rsrc_ptr->bus_num = readb (io_mem + addr);
1044 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1045 rsrc_ptr->start_addr = readl (io_mem + addr + 2);
1046 rsrc_ptr->end_addr = readl (io_mem + addr + 6);
1049 debug ("rsrc from mem or pfm ---\n");
1050 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1051 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1053 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1056 kfree (rsrc_list_ptr);
1057 rsrc_list_ptr = NULL;
1058 print_ebda_pci_rsrc ();
1062 u16 ibmphp_get_total_controllers (void)
1064 return hpc_list_ptr->num_ctlrs;
1067 struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1071 list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) {
1072 if (slot->number == physical_num)
1079 * - the smallest slot number
1080 * - the largest slot number
1081 * - the total number of the slots based on each bus
1082 * (if only one slot per bus slot_min = slot_max )
1084 struct bus_info *ibmphp_find_same_bus_num (u32 num)
1086 struct bus_info *ptr;
1088 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
1089 if (ptr->busno == num)
1095 /* Finding relative bus number, in order to map corresponding
1098 int ibmphp_get_bus_index (u8 num)
1100 struct bus_info *ptr;
1102 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
1103 if (ptr->busno == num)
1109 void ibmphp_free_bus_info_queue (void)
1111 struct bus_info *bus_info;
1112 struct list_head *list;
1113 struct list_head *next;
1115 list_for_each_safe (list, next, &bus_info_head ) {
1116 bus_info = list_entry (list, struct bus_info, bus_info_list);
1121 void ibmphp_free_ebda_hpc_queue (void)
1123 struct controller *controller = NULL;
1124 struct list_head *list;
1125 struct list_head *next;
1128 list_for_each_safe (list, next, &ebda_hpc_head) {
1129 controller = list_entry (list, struct controller, ebda_hpc_list);
1130 if (controller->ctlr_type == 0)
1131 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1132 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1134 pci_unregister_driver (&ibmphp_driver);
1136 free_ebda_hpc (controller);
1140 void ibmphp_free_ebda_pci_rsrc_queue (void)
1142 struct ebda_pci_rsrc *resource;
1143 struct list_head *list;
1144 struct list_head *next;
1146 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1147 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1153 static struct pci_device_id id_table[] = {
1155 .vendor = PCI_VENDOR_ID_IBM,
1156 .device = HPC_DEVICE_ID,
1157 .subvendor = PCI_VENDOR_ID_IBM,
1158 .subdevice = HPC_SUBSYSTEM_ID,
1159 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1163 MODULE_DEVICE_TABLE(pci, id_table);
1165 static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1166 static struct pci_driver ibmphp_driver = {
1168 .id_table = id_table,
1169 .probe = ibmphp_probe,
1172 int ibmphp_register_pci (void)
1174 struct controller *ctrl;
1177 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1178 if (ctrl->ctlr_type == 1) {
1179 rc = pci_register_driver(&ibmphp_driver);
1185 static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1187 struct controller *ctrl;
1189 debug ("inside ibmphp_probe\n");
1191 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1192 if (ctrl->ctlr_type == 1) {
1193 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1194 ctrl->ctrl_dev = dev;
1195 debug ("found device!!!\n");
1196 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);