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);
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);
100 memset (slots, 0, sizeof (*slots) * slot_count);
101 controller->slots = slots;
103 buses = kmalloc (sizeof (struct ebda_hpc_bus) * bus_count, GFP_KERNEL);
105 kfree (controller->slots);
109 memset (buses, 0, sizeof (*buses) * bus_count);
110 controller->buses = buses;
115 static void free_ebda_hpc (struct controller *controller)
117 kfree (controller->slots);
118 controller->slots = NULL;
119 kfree (controller->buses);
120 controller->buses = NULL;
121 controller->ctrl_dev = NULL;
125 static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
127 struct ebda_rsrc_list *list;
129 list = kmalloc (sizeof (struct ebda_rsrc_list), GFP_KERNEL);
132 memset (list, 0, sizeof (*list));
136 static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
138 struct ebda_pci_rsrc *resource;
140 resource = kmalloc (sizeof (struct ebda_pci_rsrc), GFP_KERNEL);
143 memset (resource, 0, sizeof (*resource));
147 static void __init print_bus_info (void)
149 struct bus_info *ptr;
150 struct list_head *ptr1;
152 list_for_each (ptr1, &bus_info_head) {
153 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
154 debug ("%s - slot_min = %x\n", __FUNCTION__, ptr->slot_min);
155 debug ("%s - slot_max = %x\n", __FUNCTION__, ptr->slot_max);
156 debug ("%s - slot_count = %x\n", __FUNCTION__, ptr->slot_count);
157 debug ("%s - bus# = %x\n", __FUNCTION__, ptr->busno);
158 debug ("%s - current_speed = %x\n", __FUNCTION__, ptr->current_speed);
159 debug ("%s - controller_id = %x\n", __FUNCTION__, ptr->controller_id);
161 debug ("%s - slots_at_33_conv = %x\n", __FUNCTION__, ptr->slots_at_33_conv);
162 debug ("%s - slots_at_66_conv = %x\n", __FUNCTION__, ptr->slots_at_66_conv);
163 debug ("%s - slots_at_66_pcix = %x\n", __FUNCTION__, ptr->slots_at_66_pcix);
164 debug ("%s - slots_at_100_pcix = %x\n", __FUNCTION__, ptr->slots_at_100_pcix);
165 debug ("%s - slots_at_133_pcix = %x\n", __FUNCTION__, ptr->slots_at_133_pcix);
170 static void print_lo_info (void)
172 struct rio_detail *ptr;
173 struct list_head *ptr1;
174 debug ("print_lo_info ---- \n");
175 list_for_each (ptr1, &rio_lo_head) {
176 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
177 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
178 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
179 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
180 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
181 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
182 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
187 static void print_vg_info (void)
189 struct rio_detail *ptr;
190 struct list_head *ptr1;
191 debug ("%s --- \n", __FUNCTION__);
192 list_for_each (ptr1, &rio_vg_head) {
193 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
194 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
195 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
196 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
197 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
198 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
199 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
204 static void __init print_ebda_pci_rsrc (void)
206 struct ebda_pci_rsrc *ptr;
207 struct list_head *ptr1;
209 list_for_each (ptr1, &ibmphp_ebda_pci_rsrc_head) {
210 ptr = list_entry (ptr1, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
211 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
212 __FUNCTION__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
216 static void __init print_ibm_slot (void)
219 struct list_head *ptr1;
221 list_for_each (ptr1, &ibmphp_slot_head) {
222 ptr = list_entry (ptr1, struct slot, ibm_slot_list);
223 debug ("%s - slot_number: %x \n", __FUNCTION__, ptr->number);
227 static void __init print_opt_vg (void)
230 struct list_head *ptr1;
231 debug ("%s --- \n", __FUNCTION__);
232 list_for_each (ptr1, &opt_vg_head) {
233 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
234 debug ("%s - rio_type %x \n", __FUNCTION__, ptr->rio_type);
235 debug ("%s - chassis_num: %x \n", __FUNCTION__, ptr->chassis_num);
236 debug ("%s - first_slot_num: %x \n", __FUNCTION__, ptr->first_slot_num);
237 debug ("%s - middle_num: %x \n", __FUNCTION__, ptr->middle_num);
241 static void __init print_ebda_hpc (void)
243 struct controller *hpc_ptr;
244 struct list_head *ptr1;
247 list_for_each (ptr1, &ebda_hpc_head) {
249 hpc_ptr = list_entry (ptr1, struct controller, ebda_hpc_list);
251 for (index = 0; index < hpc_ptr->slot_count; index++) {
252 debug ("%s - physical slot#: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_num);
253 debug ("%s - pci bus# of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_bus_num);
254 debug ("%s - index into ctlr addr: %x\n", __FUNCTION__, hpc_ptr->slots[index].ctl_index);
255 debug ("%s - cap of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_cap);
258 for (index = 0; index < hpc_ptr->bus_count; index++) {
259 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __FUNCTION__, hpc_ptr->buses[index].bus_num);
262 debug ("%s - type of hpc: %x\n", __FUNCTION__, hpc_ptr->ctlr_type);
263 switch (hpc_ptr->ctlr_type) {
265 debug ("%s - bus: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.bus);
266 debug ("%s - dev_fun: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.dev_fun);
267 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
271 debug ("%s - io_start: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_start);
272 debug ("%s - io_end: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_end);
273 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
278 debug ("%s - wpegbbar: %lx\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
279 debug ("%s - i2c_addr: %x\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
280 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
286 int __init ibmphp_access_ebda (void)
288 u8 format, num_ctlrs, rio_complete, hs_complete;
289 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, rc, re, rc_id, re_id, base;
295 io_mem = ioremap ((0x40 << 4) + 0x0e, 2);
298 ebda_seg = readw (io_mem);
300 debug ("returned ebda segment: %x\n", ebda_seg);
302 io_mem = ioremap (ebda_seg<<4, 65000);
308 offset = next_offset;
309 next_offset = readw (io_mem + offset); /* offset of next blk */
312 if (next_offset == 0) /* 0 indicate it's last blk */
314 blk_id = readw (io_mem + offset); /* this blk id */
317 /* check if it is hot swap block or rio block */
318 if (blk_id != 0x4853 && blk_id != 0x4752)
321 if (blk_id == 0x4853) {
322 debug ("now enter hot swap block---\n");
323 debug ("hot blk id: %x\n", blk_id);
324 format = readb (io_mem + offset);
331 debug ("hot blk format: %x\n", format);
332 /* hot swap sub blk */
336 re = readw (io_mem + sub_addr); /* next sub blk */
339 rc_id = readw (io_mem + sub_addr); /* sub blk id */
342 if (rc_id != 0x5243) {
346 /* rc sub blk signature */
347 num_ctlrs = readb (io_mem + sub_addr);
350 hpc_list_ptr = alloc_ebda_hpc_list ();
355 hpc_list_ptr->format = format;
356 hpc_list_ptr->num_ctlrs = num_ctlrs;
357 hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */
358 debug ("info about hpc descriptor---\n");
359 debug ("hot blk format: %x\n", format);
360 debug ("num of controller: %x\n", num_ctlrs);
361 debug ("offset of hpc data structure enteries: %x\n ", sub_addr);
363 sub_addr = base + re; /* re sub blk */
364 rc = readw (io_mem + sub_addr); /* next sub blk */
367 re_id = readw (io_mem + sub_addr); /* sub blk id */
370 if (re_id != 0x5245) {
375 /* signature of re */
376 num_entries = readw (io_mem + sub_addr);
378 sub_addr += 2; /* offset of RSRC_ENTRIES blk */
379 rsrc_list_ptr = alloc_ebda_rsrc_list ();
380 if (!rsrc_list_ptr ) {
384 rsrc_list_ptr->format = format;
385 rsrc_list_ptr->num_entries = num_entries;
386 rsrc_list_ptr->phys_addr = sub_addr;
388 debug ("info about rsrc descriptor---\n");
389 debug ("format: %x\n", format);
390 debug ("num of rsrc: %x\n", num_entries);
391 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr);
395 /* found rio table */
396 else if (blk_id == 0x4752) {
397 debug ("now enter io table ---\n");
398 debug ("rio blk id: %x\n", blk_id);
400 rio_table_ptr = kmalloc (sizeof (struct rio_table_hdr), GFP_KERNEL);
403 memset (rio_table_ptr, 0, sizeof (struct rio_table_hdr) );
404 rio_table_ptr->ver_num = readb (io_mem + offset);
405 rio_table_ptr->scal_count = readb (io_mem + offset + 1);
406 rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
407 rio_table_ptr->offset = offset +3 ;
409 debug ("info about rio table hdr ---\n");
410 debug ("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ", rio_table_ptr->ver_num, rio_table_ptr->scal_count, rio_table_ptr->riodev_count, rio_table_ptr->offset);
416 if (!hs_complete && !rio_complete) {
422 if (rio_complete == 1 && rio_table_ptr->ver_num == 3) {
423 rc = ebda_rio_table ();
430 rc = ebda_rsrc_controller ();
436 rc = ebda_rsrc_rsrc ();
447 * map info of scalability details and rio details from physical address
449 static int __init ebda_rio_table (void)
453 struct rio_detail *rio_detail_ptr;
455 offset = rio_table_ptr->offset;
456 offset += 12 * rio_table_ptr->scal_count;
458 // we do concern about rio details
459 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
460 rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL);
463 memset (rio_detail_ptr, 0, sizeof (struct rio_detail));
464 rio_detail_ptr->rio_node_id = readb (io_mem + offset);
465 rio_detail_ptr->bbar = readl (io_mem + offset + 1);
466 rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
467 rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
468 rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
469 rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
470 rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
471 rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
472 rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
473 rio_detail_ptr->status = readb (io_mem + offset + 12);
474 rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
475 rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
476 // 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);
477 //create linked list of chassis
478 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
479 list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
480 //create linked list of expansion box
481 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
482 list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
485 kfree (rio_detail_ptr);
494 * reorganizing linked list of chassis
496 static struct opt_rio *search_opt_vg (u8 chassis_num)
499 struct list_head *ptr1;
500 list_for_each (ptr1, &opt_vg_head) {
501 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
502 if (ptr->chassis_num == chassis_num)
508 static int __init combine_wpg_for_chassis (void)
510 struct opt_rio *opt_rio_ptr = NULL;
511 struct rio_detail *rio_detail_ptr = NULL;
512 struct list_head *list_head_ptr = NULL;
514 list_for_each (list_head_ptr, &rio_vg_head) {
515 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
516 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
518 opt_rio_ptr = (struct opt_rio *) kmalloc (sizeof (struct opt_rio), GFP_KERNEL);
521 memset (opt_rio_ptr, 0, sizeof (struct opt_rio));
522 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
523 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
524 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
525 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
526 list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
528 opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
529 opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
537 * reorgnizing linked list of expansion box
539 static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
541 struct opt_rio_lo *ptr;
542 struct list_head *ptr1;
543 list_for_each (ptr1, &opt_lo_head) {
544 ptr = list_entry (ptr1, struct opt_rio_lo, opt_rio_lo_list);
545 if (ptr->chassis_num == chassis_num)
551 static int combine_wpg_for_expansion (void)
553 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
554 struct rio_detail *rio_detail_ptr = NULL;
555 struct list_head *list_head_ptr = NULL;
557 list_for_each (list_head_ptr, &rio_lo_head) {
558 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
559 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
560 if (!opt_rio_lo_ptr) {
561 opt_rio_lo_ptr = (struct opt_rio_lo *) kmalloc (sizeof (struct opt_rio_lo), GFP_KERNEL);
564 memset (opt_rio_lo_ptr, 0, sizeof (struct opt_rio_lo));
565 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
566 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
567 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
568 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
569 opt_rio_lo_ptr->pack_count = 1;
571 list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
573 opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
574 opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
575 opt_rio_lo_ptr->pack_count = 2;
582 /* Since we don't know the max slot number per each chassis, hence go
583 * through the list of all chassis to find out the range
584 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
585 * var (0 = chassis, 1 = expansion box)
587 static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
589 struct opt_rio *opt_vg_ptr = NULL;
590 struct opt_rio_lo *opt_lo_ptr = NULL;
591 struct list_head *ptr = NULL;
595 list_for_each (ptr, &opt_vg_head) {
596 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
597 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
603 list_for_each (ptr, &opt_lo_head) {
604 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
605 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
614 static struct opt_rio_lo * find_rxe_num (u8 slot_num)
616 struct opt_rio_lo *opt_lo_ptr;
617 struct list_head *ptr;
619 list_for_each (ptr, &opt_lo_head) {
620 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
621 //check to see if this slot_num belongs to expansion box
622 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
628 static struct opt_rio * find_chassis_num (u8 slot_num)
630 struct opt_rio *opt_vg_ptr;
631 struct list_head *ptr;
633 list_for_each (ptr, &opt_vg_head) {
634 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
635 //check to see if this slot_num belongs to chassis
636 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
642 /* This routine will find out how many slots are in the chassis, so that
643 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
645 static u8 calculate_first_slot (u8 slot_num)
648 struct list_head * list;
649 struct slot * slot_cur;
651 list_for_each (list, &ibmphp_slot_head) {
652 slot_cur = list_entry (list, struct slot, ibm_slot_list);
653 if (slot_cur->ctrl) {
654 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
655 first_slot = slot_cur->ctrl->ending_slot_num;
658 return first_slot + 1;
661 static char *create_file_name (struct slot * slot_cur)
663 struct opt_rio *opt_vg_ptr = NULL;
664 struct opt_rio_lo *opt_lo_ptr = NULL;
666 int which = 0; /* rxe = 1, chassis = 0 */
667 u8 number = 1; /* either chassis or rxe # */
673 err ("Structure passed is empty \n");
677 slot_num = slot_cur->number;
679 memset (str, 0, sizeof(str));
682 if (rio_table_ptr->ver_num == 3) {
683 opt_vg_ptr = find_chassis_num (slot_num);
684 opt_lo_ptr = find_rxe_num (slot_num);
689 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
690 number = opt_lo_ptr->chassis_num;
691 first_slot = opt_lo_ptr->first_slot_num;
692 which = 1; /* it is RXE */
694 first_slot = opt_vg_ptr->first_slot_num;
695 number = opt_vg_ptr->chassis_num;
699 first_slot = opt_vg_ptr->first_slot_num;
700 number = opt_vg_ptr->chassis_num;
704 } else if (opt_lo_ptr) {
705 number = opt_lo_ptr->chassis_num;
706 first_slot = opt_lo_ptr->first_slot_num;
709 } else if (rio_table_ptr) {
710 if (rio_table_ptr->ver_num == 3) {
711 /* if both NULL and we DO have correct RIO table in BIOS */
716 if (slot_cur->ctrl->ctlr_type == 4) {
717 first_slot = calculate_first_slot (slot_num);
724 sprintf(str, "%s%dslot%d",
725 which == 0 ? "chassis" : "rxe",
726 number, slot_num - first_slot + 1);
730 static int fillslotinfo(struct hotplug_slot *hotplug_slot)
735 if (!hotplug_slot || !hotplug_slot->private)
738 slot = hotplug_slot->private;
739 rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL);
743 // power - enabled:1 not:0
744 hotplug_slot->info->power_status = SLOT_POWER(slot->status);
746 // attention - off:0, on:1, blinking:2
747 hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status);
749 // latch - open:1 closed:0
750 hotplug_slot->info->latch_status = SLOT_LATCH(slot->status);
752 // pci board - present:1 not:0
753 if (SLOT_PRESENT (slot->status))
754 hotplug_slot->info->adapter_status = 1;
756 hotplug_slot->info->adapter_status = 0;
758 if (slot->bus_on->supported_bus_mode
759 && (slot->bus_on->supported_speed == BUS_SPEED_66))
760 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
762 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
768 static void release_slot(struct hotplug_slot *hotplug_slot)
772 if (!hotplug_slot || !hotplug_slot->private)
775 slot = hotplug_slot->private;
776 kfree(slot->hotplug_slot->info);
777 kfree(slot->hotplug_slot->name);
778 kfree(slot->hotplug_slot);
782 /* we don't want to actually remove the resources, since free_resources will do just that */
783 ibmphp_unconfigure_card(&slot, -1);
788 static struct pci_driver ibmphp_driver;
791 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
792 * each hpc from physical address to a list of hot plug controllers based on
795 static int __init ebda_rsrc_controller (void)
797 u16 addr, addr_slot, addr_bus;
798 u8 ctlr_id, temp, bus_index;
800 u16 slot_num, bus_num, index;
801 struct hotplug_slot *hp_slot_ptr;
802 struct controller *hpc_ptr;
803 struct ebda_hpc_bus *bus_ptr;
804 struct ebda_hpc_slot *slot_ptr;
805 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
807 struct slot *tmp_slot;
808 struct list_head *list;
810 addr = hpc_list_ptr->phys_addr;
811 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
813 ctlr_id = readb (io_mem + addr);
815 slot_num = readb (io_mem + addr);
818 addr_slot = addr; /* offset of slot structure */
819 addr += (slot_num * 4);
821 bus_num = readb (io_mem + addr);
824 addr_bus = addr; /* offset of bus */
825 addr += (bus_num * 9); /* offset of ctlr_type */
826 temp = readb (io_mem + addr);
829 /* init hpc structure */
830 hpc_ptr = alloc_ebda_hpc (slot_num, bus_num);
835 hpc_ptr->ctlr_id = ctlr_id;
836 hpc_ptr->ctlr_relative_id = ctlr;
837 hpc_ptr->slot_count = slot_num;
838 hpc_ptr->bus_count = bus_num;
839 debug ("now enter ctlr data struture ---\n");
840 debug ("ctlr id: %x\n", ctlr_id);
841 debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
842 debug ("count of slots controlled by this ctlr: %x\n", slot_num);
843 debug ("count of buses controlled by this ctlr: %x\n", bus_num);
845 /* init slot structure, fetch slot, bus, cap... */
846 slot_ptr = hpc_ptr->slots;
847 for (slot = 0; slot < slot_num; slot++) {
848 slot_ptr->slot_num = readb (io_mem + addr_slot);
849 slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num);
850 slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num);
851 slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num);
853 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
855 bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
856 if (!bus_info_ptr2) {
857 bus_info_ptr1 = (struct bus_info *) kmalloc (sizeof (struct bus_info), GFP_KERNEL);
858 if (!bus_info_ptr1) {
860 goto error_no_hp_slot;
862 memset (bus_info_ptr1, 0, sizeof (struct bus_info));
863 bus_info_ptr1->slot_min = slot_ptr->slot_num;
864 bus_info_ptr1->slot_max = slot_ptr->slot_num;
865 bus_info_ptr1->slot_count += 1;
866 bus_info_ptr1->busno = slot_ptr->slot_bus_num;
867 bus_info_ptr1->index = bus_index++;
868 bus_info_ptr1->current_speed = 0xff;
869 bus_info_ptr1->current_bus_mode = 0xff;
871 bus_info_ptr1->controller_id = hpc_ptr->ctlr_id;
873 list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head);
876 bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num);
877 bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num);
878 bus_info_ptr2->slot_count += 1;
882 // end of creating the bus_info linked list
888 /* init bus structure */
889 bus_ptr = hpc_ptr->buses;
890 for (bus = 0; bus < bus_num; bus++) {
891 bus_ptr->bus_num = readb (io_mem + addr_bus + bus);
892 bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus);
893 bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1);
895 bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2);
897 bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3);
899 bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4);
901 bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num);
903 bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv;
904 bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv;
905 bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix;
906 bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix;
907 bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix;
912 hpc_ptr->ctlr_type = temp;
914 switch (hpc_ptr->ctlr_type) {
916 hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
917 hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
918 hpc_ptr->irq = readb (io_mem + addr + 2);
920 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
921 hpc_ptr->u.pci_ctlr.bus,
922 hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq);
926 hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr);
927 hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2);
928 if (!request_region (hpc_ptr->u.isa_ctlr.io_start,
929 (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1),
932 goto error_no_hp_slot;
934 hpc_ptr->irq = readb (io_mem + addr + 4);
940 hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
941 hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
942 hpc_ptr->irq = readb (io_mem + addr + 5);
947 goto error_no_hp_slot;
950 //reorganize chassis' linked list
951 combine_wpg_for_chassis ();
952 combine_wpg_for_expansion ();
953 hpc_ptr->revision = 0xff;
954 hpc_ptr->options = 0xff;
955 hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
956 hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num;
958 // register slots with hpc core as well as create linked list of ibm slot
959 for (index = 0; index < hpc_ptr->slot_count; index++) {
961 hp_slot_ptr = kmalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
964 goto error_no_hp_slot;
966 memset(hp_slot_ptr, 0, sizeof(*hp_slot_ptr));
968 hp_slot_ptr->info = kmalloc (sizeof(struct hotplug_slot_info), GFP_KERNEL);
969 if (!hp_slot_ptr->info) {
971 goto error_no_hp_info;
973 memset(hp_slot_ptr->info, 0, sizeof(struct hotplug_slot_info));
975 hp_slot_ptr->name = kmalloc(30, GFP_KERNEL);
976 if (!hp_slot_ptr->name) {
978 goto error_no_hp_name;
981 tmp_slot = kmalloc(sizeof(*tmp_slot), GFP_KERNEL);
986 memset(tmp_slot, 0, sizeof(*tmp_slot));
988 tmp_slot->flag = TRUE;
990 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
991 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
992 tmp_slot->supported_speed = 3;
993 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
994 tmp_slot->supported_speed = 2;
995 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
996 tmp_slot->supported_speed = 1;
998 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
999 tmp_slot->supported_bus_mode = 1;
1001 tmp_slot->supported_bus_mode = 0;
1004 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
1006 bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num);
1007 if (!bus_info_ptr1) {
1011 tmp_slot->bus_on = bus_info_ptr1;
1012 bus_info_ptr1 = NULL;
1013 tmp_slot->ctrl = hpc_ptr;
1015 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
1016 tmp_slot->number = hpc_ptr->slots[index].slot_num;
1017 tmp_slot->hotplug_slot = hp_slot_ptr;
1019 hp_slot_ptr->private = tmp_slot;
1020 hp_slot_ptr->release = release_slot;
1022 rc = fillslotinfo(hp_slot_ptr);
1026 rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private);
1029 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
1031 // end of registering ibm slot with hotplug core
1033 list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
1037 list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
1041 list_for_each (list, &ibmphp_slot_head) {
1042 tmp_slot = list_entry (list, struct slot, ibm_slot_list);
1044 snprintf (tmp_slot->hotplug_slot->name, 30, "%s", create_file_name (tmp_slot));
1045 pci_hp_register (tmp_slot->hotplug_slot);
1053 kfree (hp_slot_ptr->private);
1055 kfree (hp_slot_ptr->name);
1057 kfree (hp_slot_ptr->info);
1059 kfree (hp_slot_ptr);
1061 free_ebda_hpc (hpc_ptr);
1068 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
1069 * pfm from the physical addr to a list of resource.
1071 static int __init ebda_rsrc_rsrc (void)
1076 struct ebda_pci_rsrc *rsrc_ptr;
1078 addr = rsrc_list_ptr->phys_addr;
1079 debug ("now entering rsrc land\n");
1080 debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1082 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1083 type = readb (io_mem + addr);
1086 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1088 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1089 rsrc_ptr = alloc_ebda_pci_rsrc ();
1094 rsrc_ptr->rsrc_type = type;
1096 rsrc_ptr->bus_num = readb (io_mem + addr);
1097 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1098 rsrc_ptr->start_addr = readw (io_mem + addr + 2);
1099 rsrc_ptr->end_addr = readw (io_mem + addr + 4);
1102 debug ("rsrc from io type ----\n");
1103 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1104 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1106 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1109 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1110 rsrc_ptr = alloc_ebda_pci_rsrc ();
1115 rsrc_ptr->rsrc_type = type;
1117 rsrc_ptr->bus_num = readb (io_mem + addr);
1118 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1119 rsrc_ptr->start_addr = readl (io_mem + addr + 2);
1120 rsrc_ptr->end_addr = readl (io_mem + addr + 6);
1123 debug ("rsrc from mem or pfm ---\n");
1124 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1125 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1127 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1130 kfree (rsrc_list_ptr);
1131 rsrc_list_ptr = NULL;
1132 print_ebda_pci_rsrc ();
1136 u16 ibmphp_get_total_controllers (void)
1138 return hpc_list_ptr->num_ctlrs;
1141 struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1144 struct list_head *list;
1146 list_for_each (list, &ibmphp_slot_head) {
1147 slot = list_entry (list, struct slot, ibm_slot_list);
1148 if (slot->number == physical_num)
1155 * - the smallest slot number
1156 * - the largest slot number
1157 * - the total number of the slots based on each bus
1158 * (if only one slot per bus slot_min = slot_max )
1160 struct bus_info *ibmphp_find_same_bus_num (u32 num)
1162 struct bus_info *ptr;
1163 struct list_head *ptr1;
1165 list_for_each (ptr1, &bus_info_head) {
1166 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1167 if (ptr->busno == num)
1173 /* Finding relative bus number, in order to map corresponding
1176 int ibmphp_get_bus_index (u8 num)
1178 struct bus_info *ptr;
1179 struct list_head *ptr1;
1181 list_for_each (ptr1, &bus_info_head) {
1182 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1183 if (ptr->busno == num)
1189 void ibmphp_free_bus_info_queue (void)
1191 struct bus_info *bus_info;
1192 struct list_head *list;
1193 struct list_head *next;
1195 list_for_each_safe (list, next, &bus_info_head ) {
1196 bus_info = list_entry (list, struct bus_info, bus_info_list);
1201 void ibmphp_free_ebda_hpc_queue (void)
1203 struct controller *controller = NULL;
1204 struct list_head *list;
1205 struct list_head *next;
1208 list_for_each_safe (list, next, &ebda_hpc_head) {
1209 controller = list_entry (list, struct controller, ebda_hpc_list);
1210 if (controller->ctlr_type == 0)
1211 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1212 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1214 pci_unregister_driver (&ibmphp_driver);
1216 free_ebda_hpc (controller);
1220 void ibmphp_free_ebda_pci_rsrc_queue (void)
1222 struct ebda_pci_rsrc *resource;
1223 struct list_head *list;
1224 struct list_head *next;
1226 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1227 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1233 static struct pci_device_id id_table[] = {
1235 .vendor = PCI_VENDOR_ID_IBM,
1236 .device = HPC_DEVICE_ID,
1237 .subvendor = PCI_VENDOR_ID_IBM,
1238 .subdevice = HPC_SUBSYSTEM_ID,
1239 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1243 MODULE_DEVICE_TABLE(pci, id_table);
1245 static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1246 static struct pci_driver ibmphp_driver = {
1248 .id_table = id_table,
1249 .probe = ibmphp_probe,
1252 int ibmphp_register_pci (void)
1254 struct controller *ctrl;
1255 struct list_head *tmp;
1258 list_for_each (tmp, &ebda_hpc_head) {
1259 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1260 if (ctrl->ctlr_type == 1) {
1261 rc = pci_module_init (&ibmphp_driver);
1267 static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1269 struct controller *ctrl;
1270 struct list_head *tmp;
1272 debug ("inside ibmphp_probe \n");
1274 list_for_each (tmp, &ebda_hpc_head) {
1275 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1276 if (ctrl->ctlr_type == 1) {
1277 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1278 ctrl->ctrl_dev = dev;
1279 debug ("found device!!! \n");
1280 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);