2 * Standard Hot Plug Controller Driver
4 * Copyright (C) 1995,2001 Compaq Computer Corporation
5 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
6 * Copyright (C) 2001 IBM Corp.
7 * Copyright (C) 2003-2004 Intel Corporation
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 <greg@kroah.com>, <kristen.c.accardi@intel.com>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/types.h>
33 #include <linux/smp_lock.h>
34 #include <linux/pci.h>
38 static void interrupt_event_handler(struct controller
*ctrl
);
40 static struct semaphore event_semaphore
; /* mutex for process loop (up if something to process) */
41 static struct semaphore event_exit
; /* guard ensure thread has exited before calling it quits */
42 static int event_finished
;
43 static unsigned long pushbutton_pending
; /* = 0 */
45 u8
shpchp_handle_attention_button(u8 hp_slot
, void *inst_id
)
47 struct controller
*ctrl
= (struct controller
*) inst_id
;
51 struct event_info
*taskInfo
;
53 /* Attention Button Change */
54 dbg("shpchp: Attention button interrupt received.\n");
56 /* This is the structure that tells the worker thread what to do */
57 taskInfo
= &(ctrl
->event_queue
[ctrl
->next_event
]);
58 p_slot
= shpchp_find_slot(ctrl
, hp_slot
+ ctrl
->slot_device_offset
);
60 p_slot
->hpc_ops
->get_adapter_status(p_slot
, &(p_slot
->presence_save
));
61 p_slot
->hpc_ops
->get_latch_status(p_slot
, &getstatus
);
63 ctrl
->next_event
= (ctrl
->next_event
+ 1) % 10;
64 taskInfo
->hp_slot
= hp_slot
;
69 * Button pressed - See if need to TAKE ACTION!!!
71 info("Button pressed on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
72 taskInfo
->event_type
= INT_BUTTON_PRESS
;
74 if ((p_slot
->state
== BLINKINGON_STATE
)
75 || (p_slot
->state
== BLINKINGOFF_STATE
)) {
76 /* Cancel if we are still blinking; this means that we press the
77 * attention again before the 5 sec. limit expires to cancel hot-add
80 taskInfo
->event_type
= INT_BUTTON_CANCEL
;
81 info("Button cancel on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
82 } else if ((p_slot
->state
== POWERON_STATE
)
83 || (p_slot
->state
== POWEROFF_STATE
)) {
84 /* Ignore if the slot is on power-on or power-off state; this
85 * means that the previous attention button action to hot-add or
86 * hot-remove is undergoing
88 taskInfo
->event_type
= INT_BUTTON_IGNORE
;
89 info("Button ignore on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
93 up(&event_semaphore
); /* signal event thread that new event is posted */
99 u8
shpchp_handle_switch_change(u8 hp_slot
, void *inst_id
)
101 struct controller
*ctrl
= (struct controller
*) inst_id
;
105 struct event_info
*taskInfo
;
108 dbg("shpchp: Switch interrupt received.\n");
110 /* This is the structure that tells the worker thread
113 taskInfo
= &(ctrl
->event_queue
[ctrl
->next_event
]);
114 ctrl
->next_event
= (ctrl
->next_event
+ 1) % 10;
115 taskInfo
->hp_slot
= hp_slot
;
118 p_slot
= shpchp_find_slot(ctrl
, hp_slot
+ ctrl
->slot_device_offset
);
119 p_slot
->hpc_ops
->get_adapter_status(p_slot
, &(p_slot
->presence_save
));
120 p_slot
->hpc_ops
->get_latch_status(p_slot
, &getstatus
);
121 dbg("%s: Card present %x Power status %x\n", __FUNCTION__
,
122 p_slot
->presence_save
, p_slot
->pwr_save
);
128 info("Latch open on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
129 taskInfo
->event_type
= INT_SWITCH_OPEN
;
130 if (p_slot
->pwr_save
&& p_slot
->presence_save
) {
131 taskInfo
->event_type
= INT_POWER_FAULT
;
132 err("Surprise Removal of card\n");
138 info("Latch close on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
139 taskInfo
->event_type
= INT_SWITCH_CLOSE
;
143 up(&event_semaphore
); /* signal event thread that new event is posted */
148 u8
shpchp_handle_presence_change(u8 hp_slot
, void *inst_id
)
150 struct controller
*ctrl
= (struct controller
*) inst_id
;
154 struct event_info
*taskInfo
;
156 /* Presence Change */
157 dbg("shpchp: Presence/Notify input change.\n");
159 /* This is the structure that tells the worker thread
162 taskInfo
= &(ctrl
->event_queue
[ctrl
->next_event
]);
163 ctrl
->next_event
= (ctrl
->next_event
+ 1) % 10;
164 taskInfo
->hp_slot
= hp_slot
;
167 p_slot
= shpchp_find_slot(ctrl
, hp_slot
+ ctrl
->slot_device_offset
);
170 * Save the presence state
172 p_slot
->hpc_ops
->get_adapter_status(p_slot
, &(p_slot
->presence_save
));
173 if (p_slot
->presence_save
) {
177 info("Card present on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
178 taskInfo
->event_type
= INT_PRESENCE_ON
;
183 info("Card not present on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
184 taskInfo
->event_type
= INT_PRESENCE_OFF
;
188 up(&event_semaphore
); /* signal event thread that new event is posted */
193 u8
shpchp_handle_power_fault(u8 hp_slot
, void *inst_id
)
195 struct controller
*ctrl
= (struct controller
*) inst_id
;
198 struct event_info
*taskInfo
;
201 dbg("shpchp: Power fault interrupt received.\n");
203 /* This is the structure that tells the worker thread
206 taskInfo
= &(ctrl
->event_queue
[ctrl
->next_event
]);
207 ctrl
->next_event
= (ctrl
->next_event
+ 1) % 10;
208 taskInfo
->hp_slot
= hp_slot
;
211 p_slot
= shpchp_find_slot(ctrl
, hp_slot
+ ctrl
->slot_device_offset
);
213 if ( !(p_slot
->hpc_ops
->query_power_fault(p_slot
))) {
215 * Power fault Cleared
217 info("Power fault cleared on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
218 p_slot
->status
= 0x00;
219 taskInfo
->event_type
= INT_POWER_FAULT_CLEAR
;
224 info("Power fault on Slot(%d)\n", ctrl
->first_slot
+ hp_slot
);
225 taskInfo
->event_type
= INT_POWER_FAULT
;
226 /* set power fault status for this board */
227 p_slot
->status
= 0xFF;
228 info("power fault bit %x set\n", hp_slot
);
231 up(&event_semaphore
); /* signal event thread that new event is posted */
236 /* The following routines constitute the bulk of the
237 hotplug controller logic
239 static int change_bus_speed(struct controller
*ctrl
, struct slot
*p_slot
,
240 enum pci_bus_speed speed
)
244 dbg("%s: change to speed %d\n", __FUNCTION__
, speed
);
245 down(&ctrl
->crit_sect
);
246 if ((rc
= p_slot
->hpc_ops
->set_bus_speed_mode(p_slot
, speed
))) {
247 err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__
);
248 up(&ctrl
->crit_sect
);
249 return WRONG_BUS_FREQUENCY
;
251 wait_for_ctrl_irq (ctrl
);
253 if ((rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
))) {
254 err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
256 err("%s: Error code (%d)\n", __FUNCTION__
, rc
);
257 up(&ctrl
->crit_sect
);
258 return WRONG_BUS_FREQUENCY
;
260 up(&ctrl
->crit_sect
);
264 static int fix_bus_speed(struct controller
*ctrl
, struct slot
*pslot
,
265 u8 flag
, enum pci_bus_speed asp
, enum pci_bus_speed bsp
,
266 enum pci_bus_speed msp
)
270 if (flag
!= 0) { /* Other slots on the same bus are occupied */
272 err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__
, bsp
, asp
);
273 return WRONG_BUS_FREQUENCY
;
276 /* Other slots on the same bus are empty */
278 /* if adapter_speed >= bus_speed, do nothing */
281 * Try to lower bus speed to accommodate the adapter if other slots
282 * on the same controller are empty
284 if ((rc
= change_bus_speed(ctrl
, pslot
, asp
)))
289 if ((rc
= change_bus_speed(ctrl
, pslot
, asp
)))
292 if ((rc
= change_bus_speed(ctrl
, pslot
, msp
)))
301 * board_added - Called after a board has been added to the system.
303 * Turns power on for the board
307 static int board_added(struct slot
*p_slot
)
310 u8 slots_not_empty
= 0;
312 enum pci_bus_speed adapter_speed
, bus_speed
, max_bus_speed
;
314 struct controller
*ctrl
= p_slot
->ctrl
;
316 hp_slot
= p_slot
->device
- ctrl
->slot_device_offset
;
318 dbg("%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n",
319 __FUNCTION__
, p_slot
->device
,
320 ctrl
->slot_device_offset
, hp_slot
);
322 /* Wait for exclusive access to hardware */
323 down(&ctrl
->crit_sect
);
325 /* Power on slot without connecting to bus */
326 rc
= p_slot
->hpc_ops
->power_on_slot(p_slot
);
328 err("%s: Failed to power on slot\n", __FUNCTION__
);
329 /* Done with exclusive hardware access */
330 up(&ctrl
->crit_sect
);
334 /* Wait for the command to complete */
335 wait_for_ctrl_irq (ctrl
);
337 rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
);
339 err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__
, rc
);
340 /* Done with exclusive hardware access */
341 up(&ctrl
->crit_sect
);
346 if ((ctrl
->pci_dev
->vendor
== 0x8086) && (ctrl
->pci_dev
->device
== 0x0332)) {
348 return WRONG_BUS_FREQUENCY
;
350 if ((rc
= p_slot
->hpc_ops
->set_bus_speed_mode(p_slot
, PCI_SPEED_33MHz
))) {
351 err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__
);
352 up(&ctrl
->crit_sect
);
353 return WRONG_BUS_FREQUENCY
;
355 wait_for_ctrl_irq (ctrl
);
357 if ((rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
))) {
358 err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
360 err("%s: Error code (%d)\n", __FUNCTION__
, rc
);
361 up(&ctrl
->crit_sect
);
362 return WRONG_BUS_FREQUENCY
;
364 /* turn on board, blink green LED, turn off Amber LED */
365 if ((rc
= p_slot
->hpc_ops
->slot_enable(p_slot
))) {
366 err("%s: Issue of Slot Enable command failed\n", __FUNCTION__
);
367 up(&ctrl
->crit_sect
);
370 wait_for_ctrl_irq (ctrl
);
372 if ((rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
))) {
373 err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__
, rc
);
374 up(&ctrl
->crit_sect
);
379 rc
= p_slot
->hpc_ops
->get_adapter_speed(p_slot
, &adapter_speed
);
380 /* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */
381 /* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */
382 /* 0xd = PCI-X 133 Mhz 533 */
383 /* This encoding is different from the one used in cur_bus_speed & */
386 if (rc
|| adapter_speed
== PCI_SPEED_UNKNOWN
) {
387 err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__
);
388 /* Done with exclusive hardware access */
389 up(&ctrl
->crit_sect
);
390 return WRONG_BUS_FREQUENCY
;
393 rc
= p_slot
->hpc_ops
->get_cur_bus_speed(p_slot
, &bus_speed
);
394 if (rc
|| bus_speed
== PCI_SPEED_UNKNOWN
) {
395 err("%s: Can't get bus operation speed\n", __FUNCTION__
);
396 /* Done with exclusive hardware access */
397 up(&ctrl
->crit_sect
);
398 return WRONG_BUS_FREQUENCY
;
401 rc
= p_slot
->hpc_ops
->get_max_bus_speed(p_slot
, &max_bus_speed
);
402 if (rc
|| max_bus_speed
== PCI_SPEED_UNKNOWN
) {
403 err("%s: Can't get max bus operation speed\n", __FUNCTION__
);
404 max_bus_speed
= bus_speed
;
407 /* Done with exclusive hardware access */
408 up(&ctrl
->crit_sect
);
410 if ((rc
= p_slot
->hpc_ops
->get_prog_int(p_slot
, &pi
))) {
411 err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__
);
415 /* Check if there are other slots or devices on the same bus */
416 if (!list_empty(&ctrl
->pci_dev
->subordinate
->devices
))
419 dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__
,
420 slots_not_empty
, pi
);
421 dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n",
422 adapter_speed
, bus_speed
, max_bus_speed
);
425 dbg("%s: In PI = %d\n", __FUNCTION__
, pi
);
426 if ((rc
= p_slot
->hpc_ops
->get_mode1_ECC_cap(p_slot
, &mode
))) {
427 err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__
);
431 switch (adapter_speed
) {
432 case PCI_SPEED_133MHz_PCIX_533
:
433 case PCI_SPEED_133MHz_PCIX_266
:
434 if ((bus_speed
!= adapter_speed
) &&
435 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
438 case PCI_SPEED_133MHz_PCIX_ECC
:
439 case PCI_SPEED_133MHz_PCIX
:
440 if (mode
) { /* Bus - Mode 1 ECC */
441 if ((bus_speed
!= 0x7) &&
442 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
445 if ((bus_speed
!= 0x4) &&
446 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
450 case PCI_SPEED_66MHz_PCIX_ECC
:
451 case PCI_SPEED_66MHz_PCIX
:
452 if (mode
) { /* Bus - Mode 1 ECC */
453 if ((bus_speed
!= 0x5) &&
454 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
457 if ((bus_speed
!= 0x2) &&
458 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
462 case PCI_SPEED_66MHz
:
463 if ((bus_speed
!= 0x1) &&
464 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
467 case PCI_SPEED_33MHz
:
468 if (bus_speed
> 0x0) {
469 if (slots_not_empty
== 0) {
470 if ((rc
= change_bus_speed(ctrl
, p_slot
, adapter_speed
)))
473 err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__
, bus_speed
, adapter_speed
);
474 return WRONG_BUS_FREQUENCY
;
479 err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__
, bus_speed
, adapter_speed
);
480 return WRONG_BUS_FREQUENCY
;
483 /* If adpater_speed == bus_speed, nothing to do here */
484 dbg("%s: In PI = %d\n", __FUNCTION__
, pi
);
485 if ((adapter_speed
!= bus_speed
) &&
486 ((rc
= fix_bus_speed(ctrl
, p_slot
, slots_not_empty
, adapter_speed
, bus_speed
, max_bus_speed
))))
490 down(&ctrl
->crit_sect
);
491 /* turn on board, blink green LED, turn off Amber LED */
492 if ((rc
= p_slot
->hpc_ops
->slot_enable(p_slot
))) {
493 err("%s: Issue of Slot Enable command failed\n", __FUNCTION__
);
494 up(&ctrl
->crit_sect
);
497 wait_for_ctrl_irq (ctrl
);
499 if ((rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
))) {
500 err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__
, rc
);
501 up(&ctrl
->crit_sect
);
505 up(&ctrl
->crit_sect
);
507 /* Wait for ~1 second */
508 dbg("%s: before long_delay\n", __FUNCTION__
);
509 wait_for_ctrl_irq (ctrl
);
510 dbg("%s: after long_delay\n", __FUNCTION__
);
512 dbg("%s: slot status = %x\n", __FUNCTION__
, p_slot
->status
);
513 /* Check for a power fault */
514 if (p_slot
->status
== 0xFF) {
515 /* power fault occurred, but it was benign */
516 dbg("%s: power fault\n", __FUNCTION__
);
522 if (shpchp_configure_device(p_slot
)) {
523 err("Cannot add device at 0x%x:0x%x\n", p_slot
->bus
,
529 p_slot
->is_a_board
= 0x01;
530 p_slot
->pwr_save
= 1;
532 /* Wait for exclusive access to hardware */
533 down(&ctrl
->crit_sect
);
535 p_slot
->hpc_ops
->green_led_on(p_slot
);
537 /* Wait for the command to complete */
538 wait_for_ctrl_irq (ctrl
);
540 /* Done with exclusive hardware access */
541 up(&ctrl
->crit_sect
);
546 /* Wait for exclusive access to hardware */
547 down(&ctrl
->crit_sect
);
549 /* turn off slot, turn on Amber LED, turn off Green LED */
550 rc
= p_slot
->hpc_ops
->slot_disable(p_slot
);
552 err("%s: Issue of Slot Disable command failed\n", __FUNCTION__
);
553 /* Done with exclusive hardware access */
554 up(&ctrl
->crit_sect
);
557 /* Wait for the command to complete */
558 wait_for_ctrl_irq (ctrl
);
560 rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
);
562 err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__
, rc
);
563 /* Done with exclusive hardware access */
564 up(&ctrl
->crit_sect
);
568 /* Done with exclusive hardware access */
569 up(&ctrl
->crit_sect
);
576 * remove_board - Turns off slot and LED's
579 static int remove_board(struct slot
*p_slot
)
581 struct controller
*ctrl
= p_slot
->ctrl
;
585 if (shpchp_unconfigure_device(p_slot
))
588 hp_slot
= p_slot
->device
- ctrl
->slot_device_offset
;
589 p_slot
= shpchp_find_slot(ctrl
, hp_slot
+ ctrl
->slot_device_offset
);
591 dbg("In %s, hp_slot = %d\n", __FUNCTION__
, hp_slot
);
593 /* Change status to shutdown */
594 if (p_slot
->is_a_board
)
595 p_slot
->status
= 0x01;
597 /* Wait for exclusive access to hardware */
598 down(&ctrl
->crit_sect
);
600 /* turn off slot, turn on Amber LED, turn off Green LED */
601 rc
= p_slot
->hpc_ops
->slot_disable(p_slot
);
603 err("%s: Issue of Slot Disable command failed\n", __FUNCTION__
);
604 /* Done with exclusive hardware access */
605 up(&ctrl
->crit_sect
);
608 /* Wait for the command to complete */
609 wait_for_ctrl_irq (ctrl
);
611 rc
= p_slot
->hpc_ops
->check_cmd_status(ctrl
);
613 err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__
, rc
);
614 /* Done with exclusive hardware access */
615 up(&ctrl
->crit_sect
);
619 rc
= p_slot
->hpc_ops
->set_attention_status(p_slot
, 0);
621 err("%s: Issue of Set Attention command failed\n", __FUNCTION__
);
622 /* Done with exclusive hardware access */
623 up(&ctrl
->crit_sect
);
626 /* Wait for the command to complete */
627 wait_for_ctrl_irq (ctrl
);
629 /* Done with exclusive hardware access */
630 up(&ctrl
->crit_sect
);
632 p_slot
->pwr_save
= 0;
633 p_slot
->is_a_board
= 0;
639 static void pushbutton_helper_thread (unsigned long data
)
641 pushbutton_pending
= data
;
643 up(&event_semaphore
);
648 * shpchp_pushbutton_thread
650 * Scheduled procedure to handle blocking stuff for the pushbuttons
651 * Handles all pending events and exits.
654 static void shpchp_pushbutton_thread (unsigned long slot
)
656 struct slot
*p_slot
= (struct slot
*) slot
;
659 pushbutton_pending
= 0;
662 dbg("%s: Error! slot NULL\n", __FUNCTION__
);
666 p_slot
->hpc_ops
->get_power_status(p_slot
, &getstatus
);
668 p_slot
->state
= POWEROFF_STATE
;
669 dbg("In power_down_board, b:d(%x:%x)\n", p_slot
->bus
, p_slot
->device
);
671 shpchp_disable_slot(p_slot
);
672 p_slot
->state
= STATIC_STATE
;
674 p_slot
->state
= POWERON_STATE
;
675 dbg("In add_board, b:d(%x:%x)\n", p_slot
->bus
, p_slot
->device
);
677 if (shpchp_enable_slot(p_slot
)) {
678 /* Wait for exclusive access to hardware */
679 down(&p_slot
->ctrl
->crit_sect
);
681 p_slot
->hpc_ops
->green_led_off(p_slot
);
683 /* Wait for the command to complete */
684 wait_for_ctrl_irq (p_slot
->ctrl
);
686 /* Done with exclusive hardware access */
687 up(&p_slot
->ctrl
->crit_sect
);
689 p_slot
->state
= STATIC_STATE
;
696 /* this is the main worker thread */
697 static int event_thread(void* data
)
699 struct controller
*ctrl
;
701 daemonize("shpchpd_event");
705 dbg("!!!!event_thread sleeping\n");
706 down_interruptible (&event_semaphore
);
707 dbg("event_thread woken finished = %d\n", event_finished
);
708 if (event_finished
|| signal_pending(current
))
711 if (pushbutton_pending
)
712 shpchp_pushbutton_thread(pushbutton_pending
);
714 for (ctrl
= shpchp_ctrl_list
; ctrl
; ctrl
=ctrl
->next
)
715 interrupt_event_handler(ctrl
);
717 dbg("event_thread signals exit\n");
722 int shpchp_event_start_thread (void)
726 /* initialize our semaphores */
727 init_MUTEX_LOCKED(&event_exit
);
730 init_MUTEX_LOCKED(&event_semaphore
);
731 pid
= kernel_thread(event_thread
, NULL
, 0);
734 err ("Can't start up our event thread\n");
737 dbg("Our event thread pid = %d\n", pid
);
742 void shpchp_event_stop_thread (void)
745 dbg("event_thread finish command given\n");
746 up(&event_semaphore
);
747 dbg("wait for event_thread to exit\n");
752 static int update_slot_info (struct slot
*slot
)
754 struct hotplug_slot_info
*info
;
757 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
761 slot
->hpc_ops
->get_power_status(slot
, &(info
->power_status
));
762 slot
->hpc_ops
->get_attention_status(slot
, &(info
->attention_status
));
763 slot
->hpc_ops
->get_latch_status(slot
, &(info
->latch_status
));
764 slot
->hpc_ops
->get_adapter_status(slot
, &(info
->adapter_status
));
766 result
= pci_hp_change_slot_info(slot
->hotplug_slot
, info
);
771 static void interrupt_event_handler(struct controller
*ctrl
)
779 dbg("%s:\n", __FUNCTION__
);
783 for (loop
= 0; loop
< 10; loop
++) {
784 if (ctrl
->event_queue
[loop
].event_type
!= 0) {
785 dbg("%s:loop %x event_type %x\n", __FUNCTION__
, loop
,
786 ctrl
->event_queue
[loop
].event_type
);
787 hp_slot
= ctrl
->event_queue
[loop
].hp_slot
;
789 p_slot
= shpchp_find_slot(ctrl
, hp_slot
+ ctrl
->slot_device_offset
);
791 dbg("%s: hp_slot %d, p_slot %p\n",
792 __FUNCTION__
, hp_slot
, p_slot
);
794 if (ctrl
->event_queue
[loop
].event_type
== INT_BUTTON_CANCEL
) {
795 dbg("%s: button cancel\n", __FUNCTION__
);
796 del_timer(&p_slot
->task_event
);
798 switch (p_slot
->state
) {
799 case BLINKINGOFF_STATE
:
800 /* Wait for exclusive access to hardware */
801 down(&ctrl
->crit_sect
);
803 p_slot
->hpc_ops
->green_led_on(p_slot
);
804 /* Wait for the command to complete */
805 wait_for_ctrl_irq (ctrl
);
807 p_slot
->hpc_ops
->set_attention_status(p_slot
, 0);
809 /* Wait for the command to complete */
810 wait_for_ctrl_irq (ctrl
);
812 /* Done with exclusive hardware access */
813 up(&ctrl
->crit_sect
);
815 case BLINKINGON_STATE
:
816 /* Wait for exclusive access to hardware */
817 down(&ctrl
->crit_sect
);
819 p_slot
->hpc_ops
->green_led_off(p_slot
);
820 /* Wait for the command to complete */
821 wait_for_ctrl_irq (ctrl
);
823 p_slot
->hpc_ops
->set_attention_status(p_slot
, 0);
824 /* Wait for the command to complete */
825 wait_for_ctrl_irq (ctrl
);
827 /* Done with exclusive hardware access */
828 up(&ctrl
->crit_sect
);
832 warn("Not a valid state\n");
835 info(msg_button_cancel
, p_slot
->number
);
836 p_slot
->state
= STATIC_STATE
;
837 } else if (ctrl
->event_queue
[loop
].event_type
== INT_BUTTON_PRESS
) {
838 /* Button Pressed (No action on 1st press...) */
839 dbg("%s: Button pressed\n", __FUNCTION__
);
841 p_slot
->hpc_ops
->get_power_status(p_slot
, &getstatus
);
844 dbg("%s: slot is on\n", __FUNCTION__
);
845 p_slot
->state
= BLINKINGOFF_STATE
;
846 info(msg_button_off
, p_slot
->number
);
849 dbg("%s: slot is off\n", __FUNCTION__
);
850 p_slot
->state
= BLINKINGON_STATE
;
851 info(msg_button_on
, p_slot
->number
);
854 /* Wait for exclusive access to hardware */
855 down(&ctrl
->crit_sect
);
857 /* blink green LED and turn off amber */
858 p_slot
->hpc_ops
->green_led_blink(p_slot
);
859 /* Wait for the command to complete */
860 wait_for_ctrl_irq (ctrl
);
862 p_slot
->hpc_ops
->set_attention_status(p_slot
, 0);
864 /* Wait for the command to complete */
865 wait_for_ctrl_irq (ctrl
);
867 /* Done with exclusive hardware access */
868 up(&ctrl
->crit_sect
);
870 init_timer(&p_slot
->task_event
);
871 p_slot
->task_event
.expires
= jiffies
+ 5 * HZ
; /* 5 second delay */
872 p_slot
->task_event
.function
= (void (*)(unsigned long)) pushbutton_helper_thread
;
873 p_slot
->task_event
.data
= (unsigned long) p_slot
;
875 dbg("%s: add_timer p_slot = %p\n", __FUNCTION__
,(void *) p_slot
);
876 add_timer(&p_slot
->task_event
);
877 } else if (ctrl
->event_queue
[loop
].event_type
== INT_POWER_FAULT
) {
878 /***********POWER FAULT********************/
879 dbg("%s: power fault\n", __FUNCTION__
);
880 /* Wait for exclusive access to hardware */
881 down(&ctrl
->crit_sect
);
883 p_slot
->hpc_ops
->set_attention_status(p_slot
, 1);
884 /* Wait for the command to complete */
885 wait_for_ctrl_irq (ctrl
);
887 p_slot
->hpc_ops
->green_led_off(p_slot
);
888 /* Wait for the command to complete */
889 wait_for_ctrl_irq (ctrl
);
891 /* Done with exclusive hardware access */
892 up(&ctrl
->crit_sect
);
894 /* refresh notification */
896 update_slot_info(p_slot
);
899 ctrl
->event_queue
[loop
].event_type
= 0;
903 } /* End of FOR loop */
910 int shpchp_enable_slot (struct slot
*p_slot
)
915 /* Check to see if (latch closed, card present, power off) */
916 down(&p_slot
->ctrl
->crit_sect
);
917 rc
= p_slot
->hpc_ops
->get_adapter_status(p_slot
, &getstatus
);
918 if (rc
|| !getstatus
) {
919 info("%s: no adapter on slot(%x)\n", __FUNCTION__
, p_slot
->number
);
920 up(&p_slot
->ctrl
->crit_sect
);
923 rc
= p_slot
->hpc_ops
->get_latch_status(p_slot
, &getstatus
);
924 if (rc
|| getstatus
) {
925 info("%s: latch open on slot(%x)\n", __FUNCTION__
, p_slot
->number
);
926 up(&p_slot
->ctrl
->crit_sect
);
929 rc
= p_slot
->hpc_ops
->get_power_status(p_slot
, &getstatus
);
930 if (rc
|| getstatus
) {
931 info("%s: already enabled on slot(%x)\n", __FUNCTION__
, p_slot
->number
);
932 up(&p_slot
->ctrl
->crit_sect
);
935 up(&p_slot
->ctrl
->crit_sect
);
937 p_slot
->is_a_board
= 1;
939 /* We have to save the presence info for these slots */
940 p_slot
->hpc_ops
->get_adapter_status(p_slot
, &(p_slot
->presence_save
));
941 p_slot
->hpc_ops
->get_power_status(p_slot
, &(p_slot
->pwr_save
));
942 dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__
, p_slot
->pwr_save
);
943 p_slot
->hpc_ops
->get_latch_status(p_slot
, &getstatus
);
945 rc
= board_added(p_slot
);
947 p_slot
->hpc_ops
->get_adapter_status(p_slot
,
948 &(p_slot
->presence_save
));
949 p_slot
->hpc_ops
->get_latch_status(p_slot
, &getstatus
);
952 update_slot_info(p_slot
);
957 int shpchp_disable_slot (struct slot
*p_slot
)
965 /* Check to see if (latch closed, card present, power on) */
966 down(&p_slot
->ctrl
->crit_sect
);
968 ret
= p_slot
->hpc_ops
->get_adapter_status(p_slot
, &getstatus
);
969 if (ret
|| !getstatus
) {
970 info("%s: no adapter on slot(%x)\n", __FUNCTION__
, p_slot
->number
);
971 up(&p_slot
->ctrl
->crit_sect
);
974 ret
= p_slot
->hpc_ops
->get_latch_status(p_slot
, &getstatus
);
975 if (ret
|| getstatus
) {
976 info("%s: latch open on slot(%x)\n", __FUNCTION__
, p_slot
->number
);
977 up(&p_slot
->ctrl
->crit_sect
);
980 ret
= p_slot
->hpc_ops
->get_power_status(p_slot
, &getstatus
);
981 if (ret
|| !getstatus
) {
982 info("%s: already disabled slot(%x)\n", __FUNCTION__
, p_slot
->number
);
983 up(&p_slot
->ctrl
->crit_sect
);
986 up(&p_slot
->ctrl
->crit_sect
);
988 ret
= remove_board(p_slot
);
989 update_slot_info(p_slot
);