Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PCI Express Hot Plug Controller Driver |
| 3 | * |
| 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 |
| 8 | * |
| 9 | * All rights reserved. |
| 10 | * |
| 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. |
| 15 | * |
| 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 |
| 20 | * details. |
| 21 | * |
| 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. |
| 25 | * |
Kristen Accardi | 8cf4c19 | 2005-08-16 15:16:10 -0700 | [diff] [blame] | 26 | * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * |
| 28 | */ |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/module.h> |
| 31 | #include <linux/kernel.h> |
| 32 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/smp_lock.h> |
| 34 | #include <linux/pci.h> |
| 35 | #include "../pci.h" |
| 36 | #include "pciehp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | static void interrupt_event_handler(struct controller *ctrl); |
| 39 | |
| 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 */ |
| 44 | static unsigned long surprise_rm_pending; /* = 0 */ |
| 45 | |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 46 | static inline char *slot_name(struct slot *p_slot) |
| 47 | { |
| 48 | return p_slot->hotplug_slot->name; |
| 49 | } |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id) |
| 52 | { |
| 53 | struct controller *ctrl = (struct controller *) inst_id; |
| 54 | struct slot *p_slot; |
| 55 | u8 rc = 0; |
| 56 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | struct event_info *taskInfo; |
| 58 | |
| 59 | /* Attention Button Change */ |
| 60 | dbg("pciehp: Attention button interrupt received.\n"); |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | /* This is the structure that tells the worker thread what to do */ |
| 63 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
| 64 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 67 | |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 68 | ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | taskInfo->hp_slot = hp_slot; |
| 70 | |
| 71 | rc++; |
| 72 | |
| 73 | /* |
| 74 | * Button pressed - See if need to TAKE ACTION!!! |
| 75 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 76 | info("Button pressed on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | taskInfo->event_type = INT_BUTTON_PRESS; |
| 78 | |
| 79 | if ((p_slot->state == BLINKINGON_STATE) |
| 80 | || (p_slot->state == BLINKINGOFF_STATE)) { |
| 81 | /* Cancel if we are still blinking; this means that we press the |
| 82 | * attention again before the 5 sec. limit expires to cancel hot-add |
| 83 | * or hot-remove |
| 84 | */ |
| 85 | taskInfo->event_type = INT_BUTTON_CANCEL; |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 86 | info("Button cancel on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | } else if ((p_slot->state == POWERON_STATE) |
| 88 | || (p_slot->state == POWEROFF_STATE)) { |
| 89 | /* Ignore if the slot is on power-on or power-off state; this |
| 90 | * means that the previous attention button action to hot-add or |
| 91 | * hot-remove is undergoing |
| 92 | */ |
| 93 | taskInfo->event_type = INT_BUTTON_IGNORE; |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 94 | info("Button ignore on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | if (rc) |
| 98 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 99 | |
| 100 | return 0; |
| 101 | |
| 102 | } |
| 103 | |
| 104 | u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id) |
| 105 | { |
| 106 | struct controller *ctrl = (struct controller *) inst_id; |
| 107 | struct slot *p_slot; |
| 108 | u8 rc = 0; |
| 109 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | struct event_info *taskInfo; |
| 111 | |
| 112 | /* Switch Change */ |
| 113 | dbg("pciehp: Switch interrupt received.\n"); |
| 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | /* This is the structure that tells the worker thread |
| 116 | * what to do |
| 117 | */ |
| 118 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 119 | ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | taskInfo->hp_slot = hp_slot; |
| 121 | |
| 122 | rc++; |
| 123 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 125 | |
| 126 | if (getstatus) { |
| 127 | /* |
| 128 | * Switch opened |
| 129 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 130 | info("Latch open on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | taskInfo->event_type = INT_SWITCH_OPEN; |
| 132 | } else { |
| 133 | /* |
| 134 | * Switch closed |
| 135 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 136 | info("Latch close on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | taskInfo->event_type = INT_SWITCH_CLOSE; |
| 138 | } |
| 139 | |
| 140 | if (rc) |
| 141 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 142 | |
| 143 | return rc; |
| 144 | } |
| 145 | |
| 146 | u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id) |
| 147 | { |
| 148 | struct controller *ctrl = (struct controller *) inst_id; |
| 149 | struct slot *p_slot; |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 150 | u8 presence_save, rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | struct event_info *taskInfo; |
| 152 | |
| 153 | /* Presence Change */ |
| 154 | dbg("pciehp: Presence/Notify input change.\n"); |
| 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | /* This is the structure that tells the worker thread |
| 157 | * what to do |
| 158 | */ |
| 159 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 160 | ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | taskInfo->hp_slot = hp_slot; |
| 162 | |
| 163 | rc++; |
| 164 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 165 | |
| 166 | /* Switch is open, assume a presence change |
| 167 | * Save the presence state |
| 168 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 169 | p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save); |
| 170 | if (presence_save) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | /* |
| 172 | * Card Present |
| 173 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 174 | info("Card present on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | taskInfo->event_type = INT_PRESENCE_ON; |
| 176 | } else { |
| 177 | /* |
| 178 | * Not Present |
| 179 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 180 | info("Card not present on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | taskInfo->event_type = INT_PRESENCE_OFF; |
| 182 | } |
| 183 | |
| 184 | if (rc) |
| 185 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 186 | |
| 187 | return rc; |
| 188 | } |
| 189 | |
| 190 | u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id) |
| 191 | { |
| 192 | struct controller *ctrl = (struct controller *) inst_id; |
| 193 | struct slot *p_slot; |
| 194 | u8 rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | struct event_info *taskInfo; |
| 196 | |
| 197 | /* power fault */ |
| 198 | dbg("pciehp: Power fault interrupt received.\n"); |
| 199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | /* this is the structure that tells the worker thread |
| 201 | * what to do |
| 202 | */ |
| 203 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 204 | ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | taskInfo->hp_slot = hp_slot; |
| 206 | |
| 207 | rc++; |
| 208 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 209 | |
| 210 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { |
| 211 | /* |
| 212 | * power fault Cleared |
| 213 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 214 | info("Power fault cleared on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | taskInfo->event_type = INT_POWER_FAULT_CLEAR; |
| 216 | } else { |
| 217 | /* |
| 218 | * power fault |
| 219 | */ |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 220 | info("Power fault on Slot(%s)\n", slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | taskInfo->event_type = INT_POWER_FAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | info("power fault bit %x set\n", hp_slot); |
| 223 | } |
| 224 | if (rc) |
| 225 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 226 | |
| 227 | return rc; |
| 228 | } |
| 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | /* The following routines constitute the bulk of the |
| 231 | hotplug controller logic |
| 232 | */ |
| 233 | |
| 234 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) |
| 235 | { |
| 236 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 237 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
| 240 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 241 | if (pslot->hpc_ops->power_off_slot(pslot)) { |
| 242 | err("%s: Issue of Slot Power Off command failed\n", __FUNCTION__); |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 243 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | return; |
| 245 | } |
| 246 | wait_for_ctrl_irq (ctrl); |
| 247 | } |
| 248 | |
| 249 | if (PWR_LED(ctrl->ctrlcap)) { |
| 250 | pslot->hpc_ops->green_led_off(pslot); |
| 251 | wait_for_ctrl_irq (ctrl); |
| 252 | } |
| 253 | |
| 254 | if (ATTN_LED(ctrl->ctrlcap)) { |
| 255 | if (pslot->hpc_ops->set_attention_status(pslot, 1)) { |
| 256 | err("%s: Issue of Set Attention Led command failed\n", __FUNCTION__); |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 257 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | return; |
| 259 | } |
| 260 | wait_for_ctrl_irq (ctrl); |
| 261 | } |
| 262 | |
| 263 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 264 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | /** |
| 268 | * board_added - Called after a board has been added to the system. |
| 269 | * |
| 270 | * Turns power on for the board |
| 271 | * Configures board |
| 272 | * |
| 273 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 274 | static int board_added(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
| 276 | u8 hp_slot; |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 277 | int rc = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 278 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 280 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
rajesh.shah@intel.com | 1a9ed1b | 2005-10-31 16:20:10 -0800 | [diff] [blame] | 282 | dbg("%s: slot device, slot offset, hp slot = %d, %d ,%d\n", |
| 283 | __FUNCTION__, p_slot->device, |
| 284 | ctrl->slot_device_offset, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
| 286 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 287 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
| 289 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 290 | /* Power on slot */ |
| 291 | rc = p_slot->hpc_ops->power_on_slot(p_slot); |
| 292 | if (rc) { |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 293 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | return -1; |
| 295 | } |
| 296 | |
| 297 | /* Wait for the command to complete */ |
| 298 | wait_for_ctrl_irq (ctrl); |
| 299 | } |
| 300 | |
| 301 | if (PWR_LED(ctrl->ctrlcap)) { |
| 302 | p_slot->hpc_ops->green_led_blink(p_slot); |
| 303 | |
| 304 | /* Wait for the command to complete */ |
| 305 | wait_for_ctrl_irq (ctrl); |
| 306 | } |
| 307 | |
| 308 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 309 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
| 311 | /* Wait for ~1 second */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | wait_for_ctrl_irq (ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
| 314 | /* Check link training status */ |
| 315 | rc = p_slot->hpc_ops->check_lnk_status(ctrl); |
| 316 | if (rc) { |
| 317 | err("%s: Failed to check link status\n", __FUNCTION__); |
| 318 | set_slot_off(ctrl, p_slot); |
| 319 | return rc; |
| 320 | } |
| 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | /* Check for a power fault */ |
Rajesh Shah | 5a49f20 | 2005-11-23 15:44:54 -0800 | [diff] [blame] | 323 | if (p_slot->hpc_ops->query_power_fault(p_slot)) { |
| 324 | dbg("%s: power fault detected\n", __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | rc = POWER_FAILURE; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 326 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 329 | rc = pciehp_configure_device(p_slot); |
| 330 | if (rc) { |
| 331 | err("Cannot add device 0x%x:%x\n", p_slot->bus, |
| 332 | p_slot->device); |
| 333 | goto err_exit; |
| 334 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 336 | /* |
| 337 | * Some PCI Express root ports require fixup after hot-plug operation. |
| 338 | */ |
| 339 | if (pcie_mch_quirk) |
| 340 | pci_fixup_device(pci_fixup_final, ctrl->pci_dev); |
| 341 | if (PWR_LED(ctrl->ctrlcap)) { |
| 342 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 343 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 345 | p_slot->hpc_ops->green_led_on(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 347 | /* Wait for the command to complete */ |
| 348 | wait_for_ctrl_irq (ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 350 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 351 | mutex_unlock(&ctrl->ctrl_lock); |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 352 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | return 0; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 354 | |
| 355 | err_exit: |
| 356 | set_slot_off(ctrl, p_slot); |
| 357 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | |
| 361 | /** |
| 362 | * remove_board - Turns off slot and LED's |
| 363 | * |
| 364 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 365 | static int remove_board(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | u8 device; |
| 368 | u8 hp_slot; |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 369 | int rc; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 370 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 372 | if (pciehp_unconfigure_device(p_slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | return 1; |
| 374 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 375 | device = p_slot->device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 377 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 379 | |
| 380 | dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); |
| 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 383 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
| 385 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 386 | /* power off slot */ |
| 387 | rc = p_slot->hpc_ops->power_off_slot(p_slot); |
| 388 | if (rc) { |
| 389 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 390 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | return rc; |
| 392 | } |
| 393 | /* Wait for the command to complete */ |
| 394 | wait_for_ctrl_irq (ctrl); |
| 395 | } |
| 396 | |
| 397 | if (PWR_LED(ctrl->ctrlcap)) { |
| 398 | /* turn off Green LED */ |
| 399 | p_slot->hpc_ops->green_led_off(p_slot); |
| 400 | |
| 401 | /* Wait for the command to complete */ |
| 402 | wait_for_ctrl_irq (ctrl); |
| 403 | } |
| 404 | |
| 405 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 406 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | |
| 412 | static void pushbutton_helper_thread(unsigned long data) |
| 413 | { |
| 414 | pushbutton_pending = data; |
| 415 | |
| 416 | up(&event_semaphore); |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * pciehp_pushbutton_thread |
| 421 | * |
| 422 | * Scheduled procedure to handle blocking stuff for the pushbuttons |
| 423 | * Handles all pending events and exits. |
| 424 | * |
| 425 | */ |
| 426 | static void pciehp_pushbutton_thread(unsigned long slot) |
| 427 | { |
| 428 | struct slot *p_slot = (struct slot *) slot; |
| 429 | u8 getstatus; |
| 430 | |
| 431 | pushbutton_pending = 0; |
| 432 | |
| 433 | if (!p_slot) { |
| 434 | dbg("%s: Error! slot NULL\n", __FUNCTION__); |
| 435 | return; |
| 436 | } |
| 437 | |
| 438 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 439 | if (getstatus) { |
| 440 | p_slot->state = POWEROFF_STATE; |
rajesh.shah@intel.com | 1a9ed1b | 2005-10-31 16:20:10 -0800 | [diff] [blame] | 441 | dbg("%s: disabling bus:device(%x:%x)\n", __FUNCTION__, |
| 442 | p_slot->bus, p_slot->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
| 444 | pciehp_disable_slot(p_slot); |
| 445 | p_slot->state = STATIC_STATE; |
| 446 | } else { |
| 447 | p_slot->state = POWERON_STATE; |
rajesh.shah@intel.com | 1a9ed1b | 2005-10-31 16:20:10 -0800 | [diff] [blame] | 448 | dbg("%s: adding bus:device(%x:%x)\n", __FUNCTION__, |
| 449 | p_slot->bus, p_slot->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
| 451 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) { |
| 452 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 453 | mutex_lock(&p_slot->ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
| 455 | p_slot->hpc_ops->green_led_off(p_slot); |
| 456 | |
| 457 | /* Wait for the command to complete */ |
| 458 | wait_for_ctrl_irq (p_slot->ctrl); |
| 459 | |
| 460 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 461 | mutex_unlock(&p_slot->ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | p_slot->state = STATIC_STATE; |
| 464 | } |
| 465 | |
| 466 | return; |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * pciehp_surprise_rm_thread |
| 471 | * |
| 472 | * Scheduled procedure to handle blocking stuff for the surprise removal |
| 473 | * Handles all pending events and exits. |
| 474 | * |
| 475 | */ |
| 476 | static void pciehp_surprise_rm_thread(unsigned long slot) |
| 477 | { |
| 478 | struct slot *p_slot = (struct slot *) slot; |
| 479 | u8 getstatus; |
| 480 | |
| 481 | surprise_rm_pending = 0; |
| 482 | |
| 483 | if (!p_slot) { |
| 484 | dbg("%s: Error! slot NULL\n", __FUNCTION__); |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 489 | if (!getstatus) { |
| 490 | p_slot->state = POWEROFF_STATE; |
rajesh.shah@intel.com | 1a9ed1b | 2005-10-31 16:20:10 -0800 | [diff] [blame] | 491 | dbg("%s: removing bus:device(%x:%x)\n", |
| 492 | __FUNCTION__, p_slot->bus, p_slot->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | pciehp_disable_slot(p_slot); |
| 495 | p_slot->state = STATIC_STATE; |
| 496 | } else { |
| 497 | p_slot->state = POWERON_STATE; |
rajesh.shah@intel.com | 1a9ed1b | 2005-10-31 16:20:10 -0800 | [diff] [blame] | 498 | dbg("%s: adding bus:device(%x:%x)\n", |
| 499 | __FUNCTION__, p_slot->bus, p_slot->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
| 501 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) { |
| 502 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 503 | mutex_lock(&p_slot->ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
| 505 | p_slot->hpc_ops->green_led_off(p_slot); |
| 506 | |
| 507 | /* Wait for the command to complete */ |
| 508 | wait_for_ctrl_irq (p_slot->ctrl); |
| 509 | |
| 510 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 511 | mutex_unlock(&p_slot->ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | } |
| 513 | p_slot->state = STATIC_STATE; |
| 514 | } |
| 515 | |
| 516 | return; |
| 517 | } |
| 518 | |
| 519 | |
| 520 | |
| 521 | /* this is the main worker thread */ |
| 522 | static int event_thread(void* data) |
| 523 | { |
| 524 | struct controller *ctrl; |
| 525 | lock_kernel(); |
| 526 | daemonize("pciehpd_event"); |
| 527 | |
| 528 | unlock_kernel(); |
| 529 | |
| 530 | while (1) { |
| 531 | dbg("!!!!event_thread sleeping\n"); |
| 532 | down_interruptible (&event_semaphore); |
| 533 | dbg("event_thread woken finished = %d\n", event_finished); |
| 534 | if (event_finished || signal_pending(current)) |
| 535 | break; |
| 536 | /* Do stuff here */ |
| 537 | if (pushbutton_pending) |
| 538 | pciehp_pushbutton_thread(pushbutton_pending); |
| 539 | else if (surprise_rm_pending) |
| 540 | pciehp_surprise_rm_thread(surprise_rm_pending); |
| 541 | else |
| 542 | for (ctrl = pciehp_ctrl_list; ctrl; ctrl=ctrl->next) |
| 543 | interrupt_event_handler(ctrl); |
| 544 | } |
| 545 | dbg("event_thread signals exit\n"); |
| 546 | up(&event_exit); |
| 547 | return 0; |
| 548 | } |
| 549 | |
| 550 | int pciehp_event_start_thread(void) |
| 551 | { |
| 552 | int pid; |
| 553 | |
| 554 | /* initialize our semaphores */ |
| 555 | init_MUTEX_LOCKED(&event_exit); |
| 556 | event_finished=0; |
| 557 | |
| 558 | init_MUTEX_LOCKED(&event_semaphore); |
| 559 | pid = kernel_thread(event_thread, NULL, 0); |
| 560 | |
| 561 | if (pid < 0) { |
| 562 | err ("Can't start up our event thread\n"); |
| 563 | return -1; |
| 564 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | |
| 569 | void pciehp_event_stop_thread(void) |
| 570 | { |
| 571 | event_finished = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | up(&event_semaphore); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | down(&event_exit); |
| 574 | } |
| 575 | |
| 576 | |
| 577 | static int update_slot_info(struct slot *slot) |
| 578 | { |
| 579 | struct hotplug_slot_info *info; |
| 580 | /* char buffer[SLOT_NAME_SIZE]; */ |
| 581 | int result; |
| 582 | |
| 583 | info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); |
| 584 | if (!info) |
| 585 | return -ENOMEM; |
| 586 | |
| 587 | /* make_slot_name (&buffer[0], SLOT_NAME_SIZE, slot); */ |
| 588 | |
| 589 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); |
| 590 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); |
| 591 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); |
| 592 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); |
| 593 | |
| 594 | /* result = pci_hp_change_slot_info(buffer, info); */ |
| 595 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
| 596 | kfree (info); |
| 597 | return result; |
| 598 | } |
| 599 | |
| 600 | static void interrupt_event_handler(struct controller *ctrl) |
| 601 | { |
| 602 | int loop = 0; |
| 603 | int change = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | u8 hp_slot; |
| 605 | u8 getstatus; |
| 606 | struct slot *p_slot; |
| 607 | |
| 608 | while (change) { |
| 609 | change = 0; |
| 610 | |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 611 | for (loop = 0; loop < MAX_EVENTS; loop++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | if (ctrl->event_queue[loop].event_type != 0) { |
| 613 | hp_slot = ctrl->event_queue[loop].hp_slot; |
| 614 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) { |
| 618 | dbg("button cancel\n"); |
| 619 | del_timer(&p_slot->task_event); |
| 620 | |
| 621 | switch (p_slot->state) { |
| 622 | case BLINKINGOFF_STATE: |
| 623 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 624 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
| 626 | if (PWR_LED(ctrl->ctrlcap)) { |
| 627 | p_slot->hpc_ops->green_led_on(p_slot); |
| 628 | /* Wait for the command to complete */ |
| 629 | wait_for_ctrl_irq (ctrl); |
| 630 | } |
| 631 | if (ATTN_LED(ctrl->ctrlcap)) { |
| 632 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 633 | |
| 634 | /* Wait for the command to complete */ |
| 635 | wait_for_ctrl_irq (ctrl); |
| 636 | } |
| 637 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 638 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | break; |
| 640 | case BLINKINGON_STATE: |
| 641 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 642 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
| 644 | if (PWR_LED(ctrl->ctrlcap)) { |
| 645 | p_slot->hpc_ops->green_led_off(p_slot); |
| 646 | /* Wait for the command to complete */ |
| 647 | wait_for_ctrl_irq (ctrl); |
| 648 | } |
| 649 | if (ATTN_LED(ctrl->ctrlcap)){ |
| 650 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 651 | /* Wait for the command to complete */ |
| 652 | wait_for_ctrl_irq (ctrl); |
| 653 | } |
| 654 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 655 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | break; |
| 658 | default: |
| 659 | warn("Not a valid state\n"); |
| 660 | return; |
| 661 | } |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 662 | info(msg_button_cancel, slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | p_slot->state = STATIC_STATE; |
| 664 | } |
| 665 | /* ***********Button Pressed (No action on 1st press...) */ |
| 666 | else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { |
| 667 | |
| 668 | if (ATTN_BUTTN(ctrl->ctrlcap)) { |
| 669 | dbg("Button pressed\n"); |
| 670 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 671 | if (getstatus) { |
| 672 | /* slot is on */ |
| 673 | dbg("slot is on\n"); |
| 674 | p_slot->state = BLINKINGOFF_STATE; |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 675 | info(msg_button_off, slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | } else { |
| 677 | /* slot is off */ |
| 678 | dbg("slot is off\n"); |
| 679 | p_slot->state = BLINKINGON_STATE; |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 680 | info(msg_button_on, slot_name(p_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | } |
| 682 | |
| 683 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 684 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
| 686 | /* blink green LED and turn off amber */ |
| 687 | if (PWR_LED(ctrl->ctrlcap)) { |
| 688 | p_slot->hpc_ops->green_led_blink(p_slot); |
| 689 | /* Wait for the command to complete */ |
| 690 | wait_for_ctrl_irq (ctrl); |
| 691 | } |
| 692 | |
| 693 | if (ATTN_LED(ctrl->ctrlcap)) { |
| 694 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 695 | |
| 696 | /* Wait for the command to complete */ |
| 697 | wait_for_ctrl_irq (ctrl); |
| 698 | } |
| 699 | |
| 700 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 701 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | |
| 703 | init_timer(&p_slot->task_event); |
| 704 | p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ |
| 705 | p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread; |
| 706 | p_slot->task_event.data = (unsigned long) p_slot; |
| 707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | add_timer(&p_slot->task_event); |
| 709 | } |
| 710 | } |
| 711 | /***********POWER FAULT********************/ |
| 712 | else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { |
| 713 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 714 | dbg("power fault\n"); |
| 715 | /* Wait for exclusive access to hardware */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 716 | mutex_lock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
| 718 | if (ATTN_LED(ctrl->ctrlcap)) { |
| 719 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
| 720 | wait_for_ctrl_irq (ctrl); |
| 721 | } |
| 722 | |
| 723 | if (PWR_LED(ctrl->ctrlcap)) { |
| 724 | p_slot->hpc_ops->green_led_off(p_slot); |
| 725 | wait_for_ctrl_irq (ctrl); |
| 726 | } |
| 727 | |
| 728 | /* Done with exclusive hardware access */ |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 729 | mutex_unlock(&ctrl->ctrl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | } |
| 731 | } |
| 732 | /***********SURPRISE REMOVAL********************/ |
| 733 | else if ((ctrl->event_queue[loop].event_type == INT_PRESENCE_ON) || |
| 734 | (ctrl->event_queue[loop].event_type == INT_PRESENCE_OFF)) { |
| 735 | if (HP_SUPR_RM(ctrl->ctrlcap)) { |
| 736 | dbg("Surprise Removal\n"); |
| 737 | if (p_slot) { |
| 738 | surprise_rm_pending = (unsigned long) p_slot; |
| 739 | up(&event_semaphore); |
| 740 | update_slot_info(p_slot); |
| 741 | } |
| 742 | } |
| 743 | } else { |
| 744 | /* refresh notification */ |
| 745 | if (p_slot) |
| 746 | update_slot_info(p_slot); |
| 747 | } |
| 748 | |
| 749 | ctrl->event_queue[loop].event_type = 0; |
| 750 | |
| 751 | change = 1; |
| 752 | } |
| 753 | } /* End of FOR loop */ |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | |
| 758 | int pciehp_enable_slot(struct slot *p_slot) |
| 759 | { |
| 760 | u8 getstatus = 0; |
| 761 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | |
| 763 | /* Check to see if (latch closed, card present, power off) */ |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 764 | mutex_lock(&p_slot->ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | |
| 766 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 767 | if (rc || !getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 768 | info("%s: no adapter on slot(%s)\n", __FUNCTION__, |
| 769 | slot_name(p_slot)); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 770 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 771 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | } |
| 773 | if (MRL_SENS(p_slot->ctrl->ctrlcap)) { |
| 774 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 775 | if (rc || getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 776 | info("%s: latch open on slot(%s)\n", __FUNCTION__, |
| 777 | slot_name(p_slot)); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 778 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 779 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | } |
| 781 | } |
| 782 | |
| 783 | if (POWER_CTRL(p_slot->ctrl->ctrlcap)) { |
| 784 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 785 | if (rc || getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 786 | info("%s: already enabled on slot(%s)\n", __FUNCTION__, |
| 787 | slot_name(p_slot)); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 788 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 789 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } |
| 791 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 795 | rc = board_added(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | if (rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | if (p_slot) |
| 801 | update_slot_info(p_slot); |
| 802 | |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 803 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | return rc; |
| 805 | } |
| 806 | |
| 807 | |
| 808 | int pciehp_disable_slot(struct slot *p_slot) |
| 809 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | u8 getstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | |
| 813 | if (!p_slot->ctrl) |
| 814 | return 1; |
| 815 | |
| 816 | /* Check to see if (latch closed, card present, power on) */ |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 817 | mutex_lock(&p_slot->ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
| 819 | if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) { |
| 820 | ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 821 | if (ret || !getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 822 | info("%s: no adapter on slot(%s)\n", __FUNCTION__, |
| 823 | slot_name(p_slot)); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 824 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 825 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | } |
| 827 | } |
| 828 | |
| 829 | if (MRL_SENS(p_slot->ctrl->ctrlcap)) { |
| 830 | ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 831 | if (ret || getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 832 | info("%s: latch open on slot(%s)\n", __FUNCTION__, |
| 833 | slot_name(p_slot)); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 834 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 835 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | } |
| 837 | } |
| 838 | |
| 839 | if (POWER_CTRL(p_slot->ctrl->ctrlcap)) { |
| 840 | ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 841 | if (ret || !getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 842 | info("%s: already disabled slot(%s)\n", __FUNCTION__, |
| 843 | slot_name(p_slot)); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 844 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 845 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | } |
| 847 | } |
| 848 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 849 | ret = remove_board(p_slot); |
| 850 | update_slot_info(p_slot); |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame^] | 851 | |
| 852 | mutex_unlock(&p_slot->ctrl->crit_sect); |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 853 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | } |
| 855 | |