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
;
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, 1024);
269 offset
= next_offset
;
270 next_offset
= readw (io_mem
+ offset
); /* offset of next blk */
273 if (next_offset
== 0) /* 0 indicate it's last blk */
275 blk_id
= readw (io_mem
+ offset
); /* this blk id */
278 /* check if it is hot swap block or rio block */
279 if (blk_id
!= 0x4853 && blk_id
!= 0x4752)
282 if (blk_id
== 0x4853) {
283 debug ("now enter hot swap block---\n");
284 debug ("hot blk id: %x\n", blk_id
);
285 format
= readb (io_mem
+ offset
);
290 debug ("hot blk format: %x\n", format
);
291 /* hot swap sub blk */
295 re
= readw (io_mem
+ sub_addr
); /* next sub blk */
298 rc_id
= readw (io_mem
+ sub_addr
); /* sub blk id */
303 /* rc sub blk signature */
304 num_ctlrs
= readb (io_mem
+ sub_addr
);
307 hpc_list_ptr
= alloc_ebda_hpc_list ();
312 hpc_list_ptr
->format
= format
;
313 hpc_list_ptr
->num_ctlrs
= num_ctlrs
;
314 hpc_list_ptr
->phys_addr
= sub_addr
; /* offset of RSRC_CONTROLLER blk */
315 debug ("info about hpc descriptor---\n");
316 debug ("hot blk format: %x\n", format
);
317 debug ("num of controller: %x\n", num_ctlrs
);
318 debug ("offset of hpc data structure enteries: %x\n ", sub_addr
);
320 sub_addr
= base
+ re
; /* re sub blk */
321 /* FIXME: rc is never used/checked */
322 rc
= readw (io_mem
+ sub_addr
); /* next sub blk */
325 re_id
= readw (io_mem
+ sub_addr
); /* sub blk id */
331 /* signature of re */
332 num_entries
= readw (io_mem
+ sub_addr
);
334 sub_addr
+= 2; /* offset of RSRC_ENTRIES blk */
335 rsrc_list_ptr
= alloc_ebda_rsrc_list ();
336 if (!rsrc_list_ptr
) {
340 rsrc_list_ptr
->format
= format
;
341 rsrc_list_ptr
->num_entries
= num_entries
;
342 rsrc_list_ptr
->phys_addr
= sub_addr
;
344 debug ("info about rsrc descriptor---\n");
345 debug ("format: %x\n", format
);
346 debug ("num of rsrc: %x\n", num_entries
);
347 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr
);
351 /* found rio table, blk_id == 0x4752 */
352 debug ("now enter io table ---\n");
353 debug ("rio blk id: %x\n", blk_id
);
355 rio_table_ptr
= kzalloc(sizeof(struct rio_table_hdr
), GFP_KERNEL
);
358 rio_table_ptr
->ver_num
= readb (io_mem
+ offset
);
359 rio_table_ptr
->scal_count
= readb (io_mem
+ offset
+ 1);
360 rio_table_ptr
->riodev_count
= readb (io_mem
+ offset
+ 2);
361 rio_table_ptr
->offset
= offset
+3 ;
363 debug("info about rio table hdr ---\n");
364 debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ",
365 rio_table_ptr
->ver_num
, rio_table_ptr
->scal_count
,
366 rio_table_ptr
->riodev_count
, rio_table_ptr
->offset
);
372 if (!hs_complete
&& !rio_complete
)
376 if (rio_complete
&& rio_table_ptr
->ver_num
== 3) {
377 rc
= ebda_rio_table ();
382 rc
= ebda_rsrc_controller ();
386 rc
= ebda_rsrc_rsrc ();
396 * map info of scalability details and rio details from physical address
398 static int __init
ebda_rio_table (void)
402 struct rio_detail
*rio_detail_ptr
;
404 offset
= rio_table_ptr
->offset
;
405 offset
+= 12 * rio_table_ptr
->scal_count
;
407 // we do concern about rio details
408 for (i
= 0; i
< rio_table_ptr
->riodev_count
; i
++) {
409 rio_detail_ptr
= kzalloc(sizeof(struct rio_detail
), GFP_KERNEL
);
412 rio_detail_ptr
->rio_node_id
= readb (io_mem
+ offset
);
413 rio_detail_ptr
->bbar
= readl (io_mem
+ offset
+ 1);
414 rio_detail_ptr
->rio_type
= readb (io_mem
+ offset
+ 5);
415 rio_detail_ptr
->owner_id
= readb (io_mem
+ offset
+ 6);
416 rio_detail_ptr
->port0_node_connect
= readb (io_mem
+ offset
+ 7);
417 rio_detail_ptr
->port0_port_connect
= readb (io_mem
+ offset
+ 8);
418 rio_detail_ptr
->port1_node_connect
= readb (io_mem
+ offset
+ 9);
419 rio_detail_ptr
->port1_port_connect
= readb (io_mem
+ offset
+ 10);
420 rio_detail_ptr
->first_slot_num
= readb (io_mem
+ offset
+ 11);
421 rio_detail_ptr
->status
= readb (io_mem
+ offset
+ 12);
422 rio_detail_ptr
->wpindex
= readb (io_mem
+ offset
+ 13);
423 rio_detail_ptr
->chassis_num
= readb (io_mem
+ offset
+ 14);
424 // debug ("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status);
425 //create linked list of chassis
426 if (rio_detail_ptr
->rio_type
== 4 || rio_detail_ptr
->rio_type
== 5)
427 list_add (&rio_detail_ptr
->rio_detail_list
, &rio_vg_head
);
428 //create linked list of expansion box
429 else if (rio_detail_ptr
->rio_type
== 6 || rio_detail_ptr
->rio_type
== 7)
430 list_add (&rio_detail_ptr
->rio_detail_list
, &rio_lo_head
);
433 kfree (rio_detail_ptr
);
442 * reorganizing linked list of chassis
444 static struct opt_rio
*search_opt_vg (u8 chassis_num
)
447 list_for_each_entry(ptr
, &opt_vg_head
, opt_rio_list
) {
448 if (ptr
->chassis_num
== chassis_num
)
454 static int __init
combine_wpg_for_chassis (void)
456 struct opt_rio
*opt_rio_ptr
= NULL
;
457 struct rio_detail
*rio_detail_ptr
= NULL
;
459 list_for_each_entry(rio_detail_ptr
, &rio_vg_head
, rio_detail_list
) {
460 opt_rio_ptr
= search_opt_vg (rio_detail_ptr
->chassis_num
);
462 opt_rio_ptr
= kzalloc(sizeof(struct opt_rio
), GFP_KERNEL
);
465 opt_rio_ptr
->rio_type
= rio_detail_ptr
->rio_type
;
466 opt_rio_ptr
->chassis_num
= rio_detail_ptr
->chassis_num
;
467 opt_rio_ptr
->first_slot_num
= rio_detail_ptr
->first_slot_num
;
468 opt_rio_ptr
->middle_num
= rio_detail_ptr
->first_slot_num
;
469 list_add (&opt_rio_ptr
->opt_rio_list
, &opt_vg_head
);
471 opt_rio_ptr
->first_slot_num
= min (opt_rio_ptr
->first_slot_num
, rio_detail_ptr
->first_slot_num
);
472 opt_rio_ptr
->middle_num
= max (opt_rio_ptr
->middle_num
, rio_detail_ptr
->first_slot_num
);
480 * reorganizing linked list of expansion box
482 static struct opt_rio_lo
*search_opt_lo (u8 chassis_num
)
484 struct opt_rio_lo
*ptr
;
485 list_for_each_entry(ptr
, &opt_lo_head
, opt_rio_lo_list
) {
486 if (ptr
->chassis_num
== chassis_num
)
492 static int combine_wpg_for_expansion (void)
494 struct opt_rio_lo
*opt_rio_lo_ptr
= NULL
;
495 struct rio_detail
*rio_detail_ptr
= NULL
;
497 list_for_each_entry(rio_detail_ptr
, &rio_lo_head
, rio_detail_list
) {
498 opt_rio_lo_ptr
= search_opt_lo (rio_detail_ptr
->chassis_num
);
499 if (!opt_rio_lo_ptr
) {
500 opt_rio_lo_ptr
= kzalloc(sizeof(struct opt_rio_lo
), GFP_KERNEL
);
503 opt_rio_lo_ptr
->rio_type
= rio_detail_ptr
->rio_type
;
504 opt_rio_lo_ptr
->chassis_num
= rio_detail_ptr
->chassis_num
;
505 opt_rio_lo_ptr
->first_slot_num
= rio_detail_ptr
->first_slot_num
;
506 opt_rio_lo_ptr
->middle_num
= rio_detail_ptr
->first_slot_num
;
507 opt_rio_lo_ptr
->pack_count
= 1;
509 list_add (&opt_rio_lo_ptr
->opt_rio_lo_list
, &opt_lo_head
);
511 opt_rio_lo_ptr
->first_slot_num
= min (opt_rio_lo_ptr
->first_slot_num
, rio_detail_ptr
->first_slot_num
);
512 opt_rio_lo_ptr
->middle_num
= max (opt_rio_lo_ptr
->middle_num
, rio_detail_ptr
->first_slot_num
);
513 opt_rio_lo_ptr
->pack_count
= 2;
520 /* Since we don't know the max slot number per each chassis, hence go
521 * through the list of all chassis to find out the range
522 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
523 * var (0 = chassis, 1 = expansion box)
525 static int first_slot_num (u8 slot_num
, u8 first_slot
, u8 var
)
527 struct opt_rio
*opt_vg_ptr
= NULL
;
528 struct opt_rio_lo
*opt_lo_ptr
= NULL
;
532 list_for_each_entry(opt_vg_ptr
, &opt_vg_head
, opt_rio_list
) {
533 if ((first_slot
< opt_vg_ptr
->first_slot_num
) && (slot_num
>= opt_vg_ptr
->first_slot_num
)) {
539 list_for_each_entry(opt_lo_ptr
, &opt_lo_head
, opt_rio_lo_list
) {
540 if ((first_slot
< opt_lo_ptr
->first_slot_num
) && (slot_num
>= opt_lo_ptr
->first_slot_num
)) {
549 static struct opt_rio_lo
* find_rxe_num (u8 slot_num
)
551 struct opt_rio_lo
*opt_lo_ptr
;
553 list_for_each_entry(opt_lo_ptr
, &opt_lo_head
, opt_rio_lo_list
) {
554 //check to see if this slot_num belongs to expansion box
555 if ((slot_num
>= opt_lo_ptr
->first_slot_num
) && (!first_slot_num (slot_num
, opt_lo_ptr
->first_slot_num
, 1)))
561 static struct opt_rio
* find_chassis_num (u8 slot_num
)
563 struct opt_rio
*opt_vg_ptr
;
565 list_for_each_entry(opt_vg_ptr
, &opt_vg_head
, opt_rio_list
) {
566 //check to see if this slot_num belongs to chassis
567 if ((slot_num
>= opt_vg_ptr
->first_slot_num
) && (!first_slot_num (slot_num
, opt_vg_ptr
->first_slot_num
, 0)))
573 /* This routine will find out how many slots are in the chassis, so that
574 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
576 static u8
calculate_first_slot (u8 slot_num
)
579 struct slot
* slot_cur
;
581 list_for_each_entry(slot_cur
, &ibmphp_slot_head
, ibm_slot_list
) {
582 if (slot_cur
->ctrl
) {
583 if ((slot_cur
->ctrl
->ctlr_type
!= 4) && (slot_cur
->ctrl
->ending_slot_num
> first_slot
) && (slot_num
> slot_cur
->ctrl
->ending_slot_num
))
584 first_slot
= slot_cur
->ctrl
->ending_slot_num
;
587 return first_slot
+ 1;
590 static char *create_file_name (struct slot
* slot_cur
)
592 struct opt_rio
*opt_vg_ptr
= NULL
;
593 struct opt_rio_lo
*opt_lo_ptr
= NULL
;
595 int which
= 0; /* rxe = 1, chassis = 0 */
596 u8 number
= 1; /* either chassis or rxe # */
602 err ("Structure passed is empty\n");
606 slot_num
= slot_cur
->number
;
608 memset (str
, 0, sizeof(str
));
611 if (rio_table_ptr
->ver_num
== 3) {
612 opt_vg_ptr
= find_chassis_num (slot_num
);
613 opt_lo_ptr
= find_rxe_num (slot_num
);
618 if ((slot_num
- opt_vg_ptr
->first_slot_num
) > (slot_num
- opt_lo_ptr
->first_slot_num
)) {
619 number
= opt_lo_ptr
->chassis_num
;
620 first_slot
= opt_lo_ptr
->first_slot_num
;
621 which
= 1; /* it is RXE */
623 first_slot
= opt_vg_ptr
->first_slot_num
;
624 number
= opt_vg_ptr
->chassis_num
;
628 first_slot
= opt_vg_ptr
->first_slot_num
;
629 number
= opt_vg_ptr
->chassis_num
;
633 } else if (opt_lo_ptr
) {
634 number
= opt_lo_ptr
->chassis_num
;
635 first_slot
= opt_lo_ptr
->first_slot_num
;
638 } else if (rio_table_ptr
) {
639 if (rio_table_ptr
->ver_num
== 3) {
640 /* if both NULL and we DO have correct RIO table in BIOS */
645 if (slot_cur
->ctrl
->ctlr_type
== 4) {
646 first_slot
= calculate_first_slot (slot_num
);
653 sprintf(str
, "%s%dslot%d",
654 which
== 0 ? "chassis" : "rxe",
655 number
, slot_num
- first_slot
+ 1);
659 static int fillslotinfo(struct hotplug_slot
*hotplug_slot
)
664 if (!hotplug_slot
|| !hotplug_slot
->private)
667 slot
= hotplug_slot
->private;
668 rc
= ibmphp_hpc_readslot(slot
, READ_ALLSTAT
, NULL
);
672 // power - enabled:1 not:0
673 hotplug_slot
->info
->power_status
= SLOT_POWER(slot
->status
);
675 // attention - off:0, on:1, blinking:2
676 hotplug_slot
->info
->attention_status
= SLOT_ATTN(slot
->status
, slot
->ext_status
);
678 // latch - open:1 closed:0
679 hotplug_slot
->info
->latch_status
= SLOT_LATCH(slot
->status
);
681 // pci board - present:1 not:0
682 if (SLOT_PRESENT (slot
->status
))
683 hotplug_slot
->info
->adapter_status
= 1;
685 hotplug_slot
->info
->adapter_status
= 0;
687 if (slot->bus_on->supported_bus_mode
688 && (slot->bus_on->supported_speed == BUS_SPEED_66))
689 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
691 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
697 static void release_slot(struct hotplug_slot
*hotplug_slot
)
701 if (!hotplug_slot
|| !hotplug_slot
->private)
704 slot
= hotplug_slot
->private;
705 kfree(slot
->hotplug_slot
->info
);
706 kfree(slot
->hotplug_slot
->name
);
707 kfree(slot
->hotplug_slot
);
711 /* we don't want to actually remove the resources, since free_resources will do just that */
712 ibmphp_unconfigure_card(&slot
, -1);
717 static struct pci_driver ibmphp_driver
;
720 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
721 * each hpc from physical address to a list of hot plug controllers based on
724 static int __init
ebda_rsrc_controller (void)
726 u16 addr
, addr_slot
, addr_bus
;
727 u8 ctlr_id
, temp
, bus_index
;
729 u16 slot_num
, bus_num
, index
;
730 struct hotplug_slot
*hp_slot_ptr
;
731 struct controller
*hpc_ptr
;
732 struct ebda_hpc_bus
*bus_ptr
;
733 struct ebda_hpc_slot
*slot_ptr
;
734 struct bus_info
*bus_info_ptr1
, *bus_info_ptr2
;
736 struct slot
*tmp_slot
;
738 addr
= hpc_list_ptr
->phys_addr
;
739 for (ctlr
= 0; ctlr
< hpc_list_ptr
->num_ctlrs
; ctlr
++) {
741 ctlr_id
= readb (io_mem
+ addr
);
743 slot_num
= readb (io_mem
+ addr
);
746 addr_slot
= addr
; /* offset of slot structure */
747 addr
+= (slot_num
* 4);
749 bus_num
= readb (io_mem
+ addr
);
752 addr_bus
= addr
; /* offset of bus */
753 addr
+= (bus_num
* 9); /* offset of ctlr_type */
754 temp
= readb (io_mem
+ addr
);
757 /* init hpc structure */
758 hpc_ptr
= alloc_ebda_hpc (slot_num
, bus_num
);
763 hpc_ptr
->ctlr_id
= ctlr_id
;
764 hpc_ptr
->ctlr_relative_id
= ctlr
;
765 hpc_ptr
->slot_count
= slot_num
;
766 hpc_ptr
->bus_count
= bus_num
;
767 debug ("now enter ctlr data struture ---\n");
768 debug ("ctlr id: %x\n", ctlr_id
);
769 debug ("ctlr_relative_id: %x\n", hpc_ptr
->ctlr_relative_id
);
770 debug ("count of slots controlled by this ctlr: %x\n", slot_num
);
771 debug ("count of buses controlled by this ctlr: %x\n", bus_num
);
773 /* init slot structure, fetch slot, bus, cap... */
774 slot_ptr
= hpc_ptr
->slots
;
775 for (slot
= 0; slot
< slot_num
; slot
++) {
776 slot_ptr
->slot_num
= readb (io_mem
+ addr_slot
);
777 slot_ptr
->slot_bus_num
= readb (io_mem
+ addr_slot
+ slot_num
);
778 slot_ptr
->ctl_index
= readb (io_mem
+ addr_slot
+ 2*slot_num
);
779 slot_ptr
->slot_cap
= readb (io_mem
+ addr_slot
+ 3*slot_num
);
781 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
783 bus_info_ptr2
= ibmphp_find_same_bus_num (slot_ptr
->slot_bus_num
);
784 if (!bus_info_ptr2
) {
785 bus_info_ptr1
= kzalloc(sizeof(struct bus_info
), GFP_KERNEL
);
786 if (!bus_info_ptr1
) {
788 goto error_no_hp_slot
;
790 bus_info_ptr1
->slot_min
= slot_ptr
->slot_num
;
791 bus_info_ptr1
->slot_max
= slot_ptr
->slot_num
;
792 bus_info_ptr1
->slot_count
+= 1;
793 bus_info_ptr1
->busno
= slot_ptr
->slot_bus_num
;
794 bus_info_ptr1
->index
= bus_index
++;
795 bus_info_ptr1
->current_speed
= 0xff;
796 bus_info_ptr1
->current_bus_mode
= 0xff;
798 bus_info_ptr1
->controller_id
= hpc_ptr
->ctlr_id
;
800 list_add_tail (&bus_info_ptr1
->bus_info_list
, &bus_info_head
);
803 bus_info_ptr2
->slot_min
= min (bus_info_ptr2
->slot_min
, slot_ptr
->slot_num
);
804 bus_info_ptr2
->slot_max
= max (bus_info_ptr2
->slot_max
, slot_ptr
->slot_num
);
805 bus_info_ptr2
->slot_count
+= 1;
809 // end of creating the bus_info linked list
815 /* init bus structure */
816 bus_ptr
= hpc_ptr
->buses
;
817 for (bus
= 0; bus
< bus_num
; bus
++) {
818 bus_ptr
->bus_num
= readb (io_mem
+ addr_bus
+ bus
);
819 bus_ptr
->slots_at_33_conv
= readb (io_mem
+ addr_bus
+ bus_num
+ 8 * bus
);
820 bus_ptr
->slots_at_66_conv
= readb (io_mem
+ addr_bus
+ bus_num
+ 8 * bus
+ 1);
822 bus_ptr
->slots_at_66_pcix
= readb (io_mem
+ addr_bus
+ bus_num
+ 8 * bus
+ 2);
824 bus_ptr
->slots_at_100_pcix
= readb (io_mem
+ addr_bus
+ bus_num
+ 8 * bus
+ 3);
826 bus_ptr
->slots_at_133_pcix
= readb (io_mem
+ addr_bus
+ bus_num
+ 8 * bus
+ 4);
828 bus_info_ptr2
= ibmphp_find_same_bus_num (bus_ptr
->bus_num
);
830 bus_info_ptr2
->slots_at_33_conv
= bus_ptr
->slots_at_33_conv
;
831 bus_info_ptr2
->slots_at_66_conv
= bus_ptr
->slots_at_66_conv
;
832 bus_info_ptr2
->slots_at_66_pcix
= bus_ptr
->slots_at_66_pcix
;
833 bus_info_ptr2
->slots_at_100_pcix
= bus_ptr
->slots_at_100_pcix
;
834 bus_info_ptr2
->slots_at_133_pcix
= bus_ptr
->slots_at_133_pcix
;
839 hpc_ptr
->ctlr_type
= temp
;
841 switch (hpc_ptr
->ctlr_type
) {
843 hpc_ptr
->u
.pci_ctlr
.bus
= readb (io_mem
+ addr
);
844 hpc_ptr
->u
.pci_ctlr
.dev_fun
= readb (io_mem
+ addr
+ 1);
845 hpc_ptr
->irq
= readb (io_mem
+ addr
+ 2);
847 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
848 hpc_ptr
->u
.pci_ctlr
.bus
,
849 hpc_ptr
->u
.pci_ctlr
.dev_fun
, hpc_ptr
->irq
);
853 hpc_ptr
->u
.isa_ctlr
.io_start
= readw (io_mem
+ addr
);
854 hpc_ptr
->u
.isa_ctlr
.io_end
= readw (io_mem
+ addr
+ 2);
855 if (!request_region (hpc_ptr
->u
.isa_ctlr
.io_start
,
856 (hpc_ptr
->u
.isa_ctlr
.io_end
- hpc_ptr
->u
.isa_ctlr
.io_start
+ 1),
859 goto error_no_hp_slot
;
861 hpc_ptr
->irq
= readb (io_mem
+ addr
+ 4);
867 hpc_ptr
->u
.wpeg_ctlr
.wpegbbar
= readl (io_mem
+ addr
);
868 hpc_ptr
->u
.wpeg_ctlr
.i2c_addr
= readb (io_mem
+ addr
+ 4);
869 hpc_ptr
->irq
= readb (io_mem
+ addr
+ 5);
874 goto error_no_hp_slot
;
877 //reorganize chassis' linked list
878 combine_wpg_for_chassis ();
879 combine_wpg_for_expansion ();
880 hpc_ptr
->revision
= 0xff;
881 hpc_ptr
->options
= 0xff;
882 hpc_ptr
->starting_slot_num
= hpc_ptr
->slots
[0].slot_num
;
883 hpc_ptr
->ending_slot_num
= hpc_ptr
->slots
[slot_num
-1].slot_num
;
885 // register slots with hpc core as well as create linked list of ibm slot
886 for (index
= 0; index
< hpc_ptr
->slot_count
; index
++) {
888 hp_slot_ptr
= kzalloc(sizeof(*hp_slot_ptr
), GFP_KERNEL
);
891 goto error_no_hp_slot
;
894 hp_slot_ptr
->info
= kzalloc(sizeof(struct hotplug_slot_info
), GFP_KERNEL
);
895 if (!hp_slot_ptr
->info
) {
897 goto error_no_hp_info
;
900 hp_slot_ptr
->name
= kmalloc(30, GFP_KERNEL
);
901 if (!hp_slot_ptr
->name
) {
903 goto error_no_hp_name
;
906 tmp_slot
= kzalloc(sizeof(*tmp_slot
), GFP_KERNEL
);
914 tmp_slot
->capabilities
= hpc_ptr
->slots
[index
].slot_cap
;
915 if ((hpc_ptr
->slots
[index
].slot_cap
& EBDA_SLOT_133_MAX
) == EBDA_SLOT_133_MAX
)
916 tmp_slot
->supported_speed
= 3;
917 else if ((hpc_ptr
->slots
[index
].slot_cap
& EBDA_SLOT_100_MAX
) == EBDA_SLOT_100_MAX
)
918 tmp_slot
->supported_speed
= 2;
919 else if ((hpc_ptr
->slots
[index
].slot_cap
& EBDA_SLOT_66_MAX
) == EBDA_SLOT_66_MAX
)
920 tmp_slot
->supported_speed
= 1;
922 if ((hpc_ptr
->slots
[index
].slot_cap
& EBDA_SLOT_PCIX_CAP
) == EBDA_SLOT_PCIX_CAP
)
923 tmp_slot
->supported_bus_mode
= 1;
925 tmp_slot
->supported_bus_mode
= 0;
928 tmp_slot
->bus
= hpc_ptr
->slots
[index
].slot_bus_num
;
930 bus_info_ptr1
= ibmphp_find_same_bus_num (hpc_ptr
->slots
[index
].slot_bus_num
);
931 if (!bus_info_ptr1
) {
936 tmp_slot
->bus_on
= bus_info_ptr1
;
937 bus_info_ptr1
= NULL
;
938 tmp_slot
->ctrl
= hpc_ptr
;
940 tmp_slot
->ctlr_index
= hpc_ptr
->slots
[index
].ctl_index
;
941 tmp_slot
->number
= hpc_ptr
->slots
[index
].slot_num
;
942 tmp_slot
->hotplug_slot
= hp_slot_ptr
;
944 hp_slot_ptr
->private = tmp_slot
;
945 hp_slot_ptr
->release
= release_slot
;
947 rc
= fillslotinfo(hp_slot_ptr
);
951 rc
= ibmphp_init_devno ((struct slot
**) &hp_slot_ptr
->private);
954 hp_slot_ptr
->ops
= &ibmphp_hotplug_slot_ops
;
956 // end of registering ibm slot with hotplug core
958 list_add (& ((struct slot
*)(hp_slot_ptr
->private))->ibm_slot_list
, &ibmphp_slot_head
);
962 list_add (&hpc_ptr
->ebda_hpc_list
, &ebda_hpc_head
);
966 list_for_each_entry(tmp_slot
, &ibmphp_slot_head
, ibm_slot_list
) {
967 snprintf (tmp_slot
->hotplug_slot
->name
, 30, "%s", create_file_name (tmp_slot
));
968 pci_hp_register(tmp_slot
->hotplug_slot
,
969 pci_find_bus(0, tmp_slot
->bus
), tmp_slot
->device
);
977 kfree (hp_slot_ptr
->private);
979 kfree (hp_slot_ptr
->name
);
981 kfree (hp_slot_ptr
->info
);
985 free_ebda_hpc (hpc_ptr
);
992 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
993 * pfm from the physical addr to a list of resource.
995 static int __init
ebda_rsrc_rsrc (void)
1000 struct ebda_pci_rsrc
*rsrc_ptr
;
1002 addr
= rsrc_list_ptr
->phys_addr
;
1003 debug ("now entering rsrc land\n");
1004 debug ("offset of rsrc: %x\n", rsrc_list_ptr
->phys_addr
);
1006 for (rsrc
= 0; rsrc
< rsrc_list_ptr
->num_entries
; rsrc
++) {
1007 type
= readb (io_mem
+ addr
);
1010 rsrc_type
= type
& EBDA_RSRC_TYPE_MASK
;
1012 if (rsrc_type
== EBDA_IO_RSRC_TYPE
) {
1013 rsrc_ptr
= alloc_ebda_pci_rsrc ();
1018 rsrc_ptr
->rsrc_type
= type
;
1020 rsrc_ptr
->bus_num
= readb (io_mem
+ addr
);
1021 rsrc_ptr
->dev_fun
= readb (io_mem
+ addr
+ 1);
1022 rsrc_ptr
->start_addr
= readw (io_mem
+ addr
+ 2);
1023 rsrc_ptr
->end_addr
= readw (io_mem
+ addr
+ 4);
1026 debug ("rsrc from io type ----\n");
1027 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1028 rsrc_ptr
->rsrc_type
, rsrc_ptr
->bus_num
, rsrc_ptr
->dev_fun
, rsrc_ptr
->start_addr
, rsrc_ptr
->end_addr
);
1030 list_add (&rsrc_ptr
->ebda_pci_rsrc_list
, &ibmphp_ebda_pci_rsrc_head
);
1033 if (rsrc_type
== EBDA_MEM_RSRC_TYPE
|| rsrc_type
== EBDA_PFM_RSRC_TYPE
) {
1034 rsrc_ptr
= alloc_ebda_pci_rsrc ();
1039 rsrc_ptr
->rsrc_type
= type
;
1041 rsrc_ptr
->bus_num
= readb (io_mem
+ addr
);
1042 rsrc_ptr
->dev_fun
= readb (io_mem
+ addr
+ 1);
1043 rsrc_ptr
->start_addr
= readl (io_mem
+ addr
+ 2);
1044 rsrc_ptr
->end_addr
= readl (io_mem
+ addr
+ 6);
1047 debug ("rsrc from mem or pfm ---\n");
1048 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1049 rsrc_ptr
->rsrc_type
, rsrc_ptr
->bus_num
, rsrc_ptr
->dev_fun
, rsrc_ptr
->start_addr
, rsrc_ptr
->end_addr
);
1051 list_add (&rsrc_ptr
->ebda_pci_rsrc_list
, &ibmphp_ebda_pci_rsrc_head
);
1054 kfree (rsrc_list_ptr
);
1055 rsrc_list_ptr
= NULL
;
1056 print_ebda_pci_rsrc ();
1060 u16
ibmphp_get_total_controllers (void)
1062 return hpc_list_ptr
->num_ctlrs
;
1065 struct slot
*ibmphp_get_slot_from_physical_num (u8 physical_num
)
1069 list_for_each_entry(slot
, &ibmphp_slot_head
, ibm_slot_list
) {
1070 if (slot
->number
== physical_num
)
1077 * - the smallest slot number
1078 * - the largest slot number
1079 * - the total number of the slots based on each bus
1080 * (if only one slot per bus slot_min = slot_max )
1082 struct bus_info
*ibmphp_find_same_bus_num (u32 num
)
1084 struct bus_info
*ptr
;
1086 list_for_each_entry(ptr
, &bus_info_head
, bus_info_list
) {
1087 if (ptr
->busno
== num
)
1093 /* Finding relative bus number, in order to map corresponding
1096 int ibmphp_get_bus_index (u8 num
)
1098 struct bus_info
*ptr
;
1100 list_for_each_entry(ptr
, &bus_info_head
, bus_info_list
) {
1101 if (ptr
->busno
== num
)
1107 void ibmphp_free_bus_info_queue (void)
1109 struct bus_info
*bus_info
;
1110 struct list_head
*list
;
1111 struct list_head
*next
;
1113 list_for_each_safe (list
, next
, &bus_info_head
) {
1114 bus_info
= list_entry (list
, struct bus_info
, bus_info_list
);
1119 void ibmphp_free_ebda_hpc_queue (void)
1121 struct controller
*controller
= NULL
;
1122 struct list_head
*list
;
1123 struct list_head
*next
;
1126 list_for_each_safe (list
, next
, &ebda_hpc_head
) {
1127 controller
= list_entry (list
, struct controller
, ebda_hpc_list
);
1128 if (controller
->ctlr_type
== 0)
1129 release_region (controller
->u
.isa_ctlr
.io_start
, (controller
->u
.isa_ctlr
.io_end
- controller
->u
.isa_ctlr
.io_start
+ 1));
1130 else if ((controller
->ctlr_type
== 1) && (!pci_flag
)) {
1132 pci_unregister_driver (&ibmphp_driver
);
1134 free_ebda_hpc (controller
);
1138 void ibmphp_free_ebda_pci_rsrc_queue (void)
1140 struct ebda_pci_rsrc
*resource
;
1141 struct list_head
*list
;
1142 struct list_head
*next
;
1144 list_for_each_safe (list
, next
, &ibmphp_ebda_pci_rsrc_head
) {
1145 resource
= list_entry (list
, struct ebda_pci_rsrc
, ebda_pci_rsrc_list
);
1151 static struct pci_device_id id_table
[] = {
1153 .vendor
= PCI_VENDOR_ID_IBM
,
1154 .device
= HPC_DEVICE_ID
,
1155 .subvendor
= PCI_VENDOR_ID_IBM
,
1156 .subdevice
= HPC_SUBSYSTEM_ID
,
1157 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG
<< 8) | 0x00),
1161 MODULE_DEVICE_TABLE(pci
, id_table
);
1163 static int ibmphp_probe (struct pci_dev
*, const struct pci_device_id
*);
1164 static struct pci_driver ibmphp_driver
= {
1166 .id_table
= id_table
,
1167 .probe
= ibmphp_probe
,
1170 int ibmphp_register_pci (void)
1172 struct controller
*ctrl
;
1175 list_for_each_entry(ctrl
, &ebda_hpc_head
, ebda_hpc_list
) {
1176 if (ctrl
->ctlr_type
== 1) {
1177 rc
= pci_register_driver(&ibmphp_driver
);
1183 static int ibmphp_probe (struct pci_dev
* dev
, const struct pci_device_id
*ids
)
1185 struct controller
*ctrl
;
1187 debug ("inside ibmphp_probe\n");
1189 list_for_each_entry(ctrl
, &ebda_hpc_head
, ebda_hpc_list
) {
1190 if (ctrl
->ctlr_type
== 1) {
1191 if ((dev
->devfn
== ctrl
->u
.pci_ctlr
.dev_fun
) && (dev
->bus
->number
== ctrl
->u
.pci_ctlr
.bus
)) {
1192 ctrl
->ctrl_dev
= dev
;
1193 debug ("found device!!!\n");
1194 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev
->device
, dev
->subsystem_device
);