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