Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Standard 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 | |
| 30 | #include <linux/config.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/workqueue.h> |
| 36 | #include <linux/interrupt.h> |
| 37 | #include <linux/delay.h> |
| 38 | #include <linux/wait.h> |
| 39 | #include <linux/smp_lock.h> |
| 40 | #include <linux/pci.h> |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 41 | #include "../pci.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include "shpchp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | static void interrupt_event_handler(struct controller *ctrl); |
| 45 | |
| 46 | static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */ |
| 47 | static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */ |
| 48 | static int event_finished; |
| 49 | static unsigned long pushbutton_pending; /* = 0 */ |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | u8 shpchp_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("shpchp: 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 = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 65 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 66 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 68 | |
| 69 | ctrl->next_event = (ctrl->next_event + 1) % 10; |
| 70 | taskInfo->hp_slot = hp_slot; |
| 71 | |
| 72 | rc++; |
| 73 | |
| 74 | /* |
| 75 | * Button pressed - See if need to TAKE ACTION!!! |
| 76 | */ |
| 77 | info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot); |
| 78 | taskInfo->event_type = INT_BUTTON_PRESS; |
| 79 | |
| 80 | if ((p_slot->state == BLINKINGON_STATE) |
| 81 | || (p_slot->state == BLINKINGOFF_STATE)) { |
| 82 | /* Cancel if we are still blinking; this means that we press the |
| 83 | * attention again before the 5 sec. limit expires to cancel hot-add |
| 84 | * or hot-remove |
| 85 | */ |
| 86 | taskInfo->event_type = INT_BUTTON_CANCEL; |
| 87 | info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot); |
| 88 | } else if ((p_slot->state == POWERON_STATE) |
| 89 | || (p_slot->state == POWEROFF_STATE)) { |
| 90 | /* Ignore if the slot is on power-on or power-off state; this |
| 91 | * means that the previous attention button action to hot-add or |
| 92 | * hot-remove is undergoing |
| 93 | */ |
| 94 | taskInfo->event_type = INT_BUTTON_IGNORE; |
| 95 | info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot); |
| 96 | } |
| 97 | |
| 98 | if (rc) |
| 99 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 100 | |
| 101 | return 0; |
| 102 | |
| 103 | } |
| 104 | |
| 105 | u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id) |
| 106 | { |
| 107 | struct controller *ctrl = (struct controller *) inst_id; |
| 108 | struct slot *p_slot; |
| 109 | u8 rc = 0; |
| 110 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | struct event_info *taskInfo; |
| 112 | |
| 113 | /* Switch Change */ |
| 114 | dbg("shpchp: Switch interrupt received.\n"); |
| 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | /* This is the structure that tells the worker thread |
| 117 | * what to do |
| 118 | */ |
| 119 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
| 120 | ctrl->next_event = (ctrl->next_event + 1) % 10; |
| 121 | taskInfo->hp_slot = hp_slot; |
| 122 | |
| 123 | rc++; |
| 124 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 125 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 127 | dbg("%s: Card present %x Power status %x\n", __FUNCTION__, |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 128 | p_slot->presence_save, p_slot->pwr_save); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
| 130 | if (getstatus) { |
| 131 | /* |
| 132 | * Switch opened |
| 133 | */ |
| 134 | info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | taskInfo->event_type = INT_SWITCH_OPEN; |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 136 | if (p_slot->pwr_save && p_slot->presence_save) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | taskInfo->event_type = INT_POWER_FAULT; |
| 138 | err("Surprise Removal of card\n"); |
| 139 | } |
| 140 | } else { |
| 141 | /* |
| 142 | * Switch closed |
| 143 | */ |
| 144 | info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | taskInfo->event_type = INT_SWITCH_CLOSE; |
| 146 | } |
| 147 | |
| 148 | if (rc) |
| 149 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 150 | |
| 151 | return rc; |
| 152 | } |
| 153 | |
| 154 | u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id) |
| 155 | { |
| 156 | struct controller *ctrl = (struct controller *) inst_id; |
| 157 | struct slot *p_slot; |
| 158 | u8 rc = 0; |
| 159 | /*u8 temp_byte;*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | struct event_info *taskInfo; |
| 161 | |
| 162 | /* Presence Change */ |
| 163 | dbg("shpchp: Presence/Notify input change.\n"); |
| 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | /* This is the structure that tells the worker thread |
| 166 | * what to do |
| 167 | */ |
| 168 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
| 169 | ctrl->next_event = (ctrl->next_event + 1) % 10; |
| 170 | taskInfo->hp_slot = hp_slot; |
| 171 | |
| 172 | rc++; |
| 173 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 174 | |
| 175 | /* |
| 176 | * Save the presence state |
| 177 | */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 178 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
| 179 | if (p_slot->presence_save) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | /* |
| 181 | * Card Present |
| 182 | */ |
| 183 | info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot); |
| 184 | taskInfo->event_type = INT_PRESENCE_ON; |
| 185 | } else { |
| 186 | /* |
| 187 | * Not Present |
| 188 | */ |
| 189 | info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot); |
| 190 | taskInfo->event_type = INT_PRESENCE_OFF; |
| 191 | } |
| 192 | |
| 193 | if (rc) |
| 194 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 195 | |
| 196 | return rc; |
| 197 | } |
| 198 | |
| 199 | u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id) |
| 200 | { |
| 201 | struct controller *ctrl = (struct controller *) inst_id; |
| 202 | struct slot *p_slot; |
| 203 | u8 rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | struct event_info *taskInfo; |
| 205 | |
| 206 | /* Power fault */ |
| 207 | dbg("shpchp: Power fault interrupt received.\n"); |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | /* This is the structure that tells the worker thread |
| 210 | * what to do |
| 211 | */ |
| 212 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
| 213 | ctrl->next_event = (ctrl->next_event + 1) % 10; |
| 214 | taskInfo->hp_slot = hp_slot; |
| 215 | |
| 216 | rc++; |
| 217 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 218 | |
| 219 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { |
| 220 | /* |
| 221 | * Power fault Cleared |
| 222 | */ |
| 223 | info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot); |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 224 | p_slot->status = 0x00; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | taskInfo->event_type = INT_POWER_FAULT_CLEAR; |
| 226 | } else { |
| 227 | /* |
| 228 | * Power fault |
| 229 | */ |
| 230 | info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot); |
| 231 | taskInfo->event_type = INT_POWER_FAULT; |
| 232 | /* set power fault status for this board */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 233 | p_slot->status = 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | info("power fault bit %x set\n", hp_slot); |
| 235 | } |
| 236 | if (rc) |
| 237 | up(&event_semaphore); /* signal event thread that new event is posted */ |
| 238 | |
| 239 | return rc; |
| 240 | } |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | /* The following routines constitute the bulk of the |
| 243 | hotplug controller logic |
| 244 | */ |
| 245 | static u32 change_bus_speed(struct controller *ctrl, struct slot *p_slot, enum pci_bus_speed speed) |
| 246 | { |
| 247 | u32 rc = 0; |
| 248 | |
| 249 | dbg("%s: change to speed %d\n", __FUNCTION__, speed); |
| 250 | down(&ctrl->crit_sect); |
| 251 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { |
| 252 | err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); |
| 253 | up(&ctrl->crit_sect); |
| 254 | return WRONG_BUS_FREQUENCY; |
| 255 | } |
| 256 | wait_for_ctrl_irq (ctrl); |
| 257 | |
| 258 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { |
| 259 | err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n", |
| 260 | __FUNCTION__); |
| 261 | err("%s: Error code (%d)\n", __FUNCTION__, rc); |
| 262 | up(&ctrl->crit_sect); |
| 263 | return WRONG_BUS_FREQUENCY; |
| 264 | } |
| 265 | up(&ctrl->crit_sect); |
| 266 | return rc; |
| 267 | } |
| 268 | |
| 269 | static u32 fix_bus_speed(struct controller *ctrl, struct slot *pslot, u8 flag, |
| 270 | enum pci_bus_speed asp, enum pci_bus_speed bsp, enum pci_bus_speed msp) |
| 271 | { |
| 272 | u32 rc = 0; |
| 273 | |
| 274 | if (flag != 0) { /* Other slots on the same bus are occupied */ |
| 275 | if ( asp < bsp ) { |
| 276 | err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp); |
| 277 | return WRONG_BUS_FREQUENCY; |
| 278 | } |
| 279 | } else { |
| 280 | /* Other slots on the same bus are empty */ |
| 281 | if (msp == bsp) { |
| 282 | /* if adapter_speed >= bus_speed, do nothing */ |
| 283 | if (asp < bsp) { |
| 284 | /* |
| 285 | * Try to lower bus speed to accommodate the adapter if other slots |
| 286 | * on the same controller are empty |
| 287 | */ |
| 288 | if ((rc = change_bus_speed(ctrl, pslot, asp))) |
| 289 | return rc; |
| 290 | } |
| 291 | } else { |
| 292 | if (asp < msp) { |
| 293 | if ((rc = change_bus_speed(ctrl, pslot, asp))) |
| 294 | return rc; |
| 295 | } else { |
| 296 | if ((rc = change_bus_speed(ctrl, pslot, msp))) |
| 297 | return rc; |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | return rc; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * board_added - Called after a board has been added to the system. |
| 306 | * |
| 307 | * Turns power on for the board |
| 308 | * Configures board |
| 309 | * |
| 310 | */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 311 | static u32 board_added(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
| 313 | u8 hp_slot; |
| 314 | u8 slots_not_empty = 0; |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 315 | u32 rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed; |
| 317 | u8 pi, mode; |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 318 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 320 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 322 | dbg("%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", |
| 323 | __FUNCTION__, p_slot->device, |
| 324 | ctrl->slot_device_offset, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
| 326 | /* Wait for exclusive access to hardware */ |
| 327 | down(&ctrl->crit_sect); |
| 328 | |
| 329 | /* Power on slot without connecting to bus */ |
| 330 | rc = p_slot->hpc_ops->power_on_slot(p_slot); |
| 331 | if (rc) { |
| 332 | err("%s: Failed to power on slot\n", __FUNCTION__); |
| 333 | /* Done with exclusive hardware access */ |
| 334 | up(&ctrl->crit_sect); |
| 335 | return -1; |
| 336 | } |
| 337 | |
| 338 | /* Wait for the command to complete */ |
| 339 | wait_for_ctrl_irq (ctrl); |
| 340 | |
| 341 | rc = p_slot->hpc_ops->check_cmd_status(ctrl); |
| 342 | if (rc) { |
| 343 | err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc); |
| 344 | /* Done with exclusive hardware access */ |
| 345 | up(&ctrl->crit_sect); |
| 346 | return -1; |
| 347 | } |
| 348 | |
| 349 | |
| 350 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
| 351 | if (slots_not_empty) |
| 352 | return WRONG_BUS_FREQUENCY; |
| 353 | |
| 354 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { |
| 355 | err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); |
| 356 | up(&ctrl->crit_sect); |
| 357 | return WRONG_BUS_FREQUENCY; |
| 358 | } |
| 359 | wait_for_ctrl_irq (ctrl); |
| 360 | |
| 361 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { |
| 362 | err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n", |
| 363 | __FUNCTION__); |
| 364 | err("%s: Error code (%d)\n", __FUNCTION__, rc); |
| 365 | up(&ctrl->crit_sect); |
| 366 | return WRONG_BUS_FREQUENCY; |
| 367 | } |
| 368 | /* turn on board, blink green LED, turn off Amber LED */ |
| 369 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { |
| 370 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); |
| 371 | up(&ctrl->crit_sect); |
| 372 | return rc; |
| 373 | } |
| 374 | wait_for_ctrl_irq (ctrl); |
| 375 | |
| 376 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { |
| 377 | err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc); |
| 378 | up(&ctrl->crit_sect); |
| 379 | return rc; |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed); |
| 384 | /* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */ |
| 385 | /* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */ |
| 386 | /* 0xd = PCI-X 133 Mhz 533 */ |
| 387 | /* This encoding is different from the one used in cur_bus_speed & */ |
| 388 | /* max_bus_speed */ |
| 389 | |
| 390 | if (rc || adapter_speed == PCI_SPEED_UNKNOWN) { |
| 391 | err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__); |
| 392 | /* Done with exclusive hardware access */ |
| 393 | up(&ctrl->crit_sect); |
| 394 | return WRONG_BUS_FREQUENCY; |
| 395 | } |
| 396 | |
| 397 | rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed); |
| 398 | if (rc || bus_speed == PCI_SPEED_UNKNOWN) { |
| 399 | err("%s: Can't get bus operation speed\n", __FUNCTION__); |
| 400 | /* Done with exclusive hardware access */ |
| 401 | up(&ctrl->crit_sect); |
| 402 | return WRONG_BUS_FREQUENCY; |
| 403 | } |
| 404 | |
| 405 | rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed); |
| 406 | if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) { |
| 407 | err("%s: Can't get max bus operation speed\n", __FUNCTION__); |
| 408 | max_bus_speed = bus_speed; |
| 409 | } |
| 410 | |
| 411 | /* Done with exclusive hardware access */ |
| 412 | up(&ctrl->crit_sect); |
| 413 | |
| 414 | if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) { |
| 415 | err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__); |
| 416 | pi = 1; |
| 417 | } |
| 418 | |
| 419 | /* Check if there are other slots or devices on the same bus */ |
| 420 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) |
| 421 | slots_not_empty = 1; |
| 422 | |
| 423 | dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__, |
| 424 | slots_not_empty, pi); |
| 425 | dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n", |
| 426 | adapter_speed, bus_speed, max_bus_speed); |
| 427 | |
| 428 | if (pi == 2) { |
| 429 | dbg("%s: In PI = %d\n", __FUNCTION__, pi); |
| 430 | if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) { |
| 431 | err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__); |
| 432 | mode = 0; |
| 433 | } |
| 434 | |
| 435 | switch (adapter_speed) { |
| 436 | case PCI_SPEED_133MHz_PCIX_533: |
| 437 | case PCI_SPEED_133MHz_PCIX_266: |
| 438 | if ((bus_speed != adapter_speed) && |
| 439 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 440 | return rc; |
| 441 | break; |
| 442 | case PCI_SPEED_133MHz_PCIX_ECC: |
| 443 | case PCI_SPEED_133MHz_PCIX: |
| 444 | if (mode) { /* Bus - Mode 1 ECC */ |
| 445 | if ((bus_speed != 0x7) && |
| 446 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 447 | return rc; |
| 448 | } else { |
| 449 | if ((bus_speed != 0x4) && |
| 450 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 451 | return rc; |
| 452 | } |
| 453 | break; |
| 454 | case PCI_SPEED_66MHz_PCIX_ECC: |
| 455 | case PCI_SPEED_66MHz_PCIX: |
| 456 | if (mode) { /* Bus - Mode 1 ECC */ |
| 457 | if ((bus_speed != 0x5) && |
| 458 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 459 | return rc; |
| 460 | } else { |
| 461 | if ((bus_speed != 0x2) && |
| 462 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 463 | return rc; |
| 464 | } |
| 465 | break; |
| 466 | case PCI_SPEED_66MHz: |
| 467 | if ((bus_speed != 0x1) && |
| 468 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 469 | return rc; |
| 470 | break; |
| 471 | case PCI_SPEED_33MHz: |
| 472 | if (bus_speed > 0x0) { |
| 473 | if (slots_not_empty == 0) { |
| 474 | if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed))) |
| 475 | return rc; |
| 476 | } else { |
| 477 | err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); |
| 478 | return WRONG_BUS_FREQUENCY; |
| 479 | } |
| 480 | } |
| 481 | break; |
| 482 | default: |
| 483 | err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); |
| 484 | return WRONG_BUS_FREQUENCY; |
| 485 | } |
| 486 | } else { |
| 487 | /* If adpater_speed == bus_speed, nothing to do here */ |
| 488 | dbg("%s: In PI = %d\n", __FUNCTION__, pi); |
| 489 | if ((adapter_speed != bus_speed) && |
| 490 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) |
| 491 | return rc; |
| 492 | } |
| 493 | |
| 494 | down(&ctrl->crit_sect); |
| 495 | /* turn on board, blink green LED, turn off Amber LED */ |
| 496 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { |
| 497 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); |
| 498 | up(&ctrl->crit_sect); |
| 499 | return rc; |
| 500 | } |
| 501 | wait_for_ctrl_irq (ctrl); |
| 502 | |
| 503 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { |
| 504 | err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc); |
| 505 | up(&ctrl->crit_sect); |
| 506 | return rc; |
| 507 | } |
| 508 | |
| 509 | up(&ctrl->crit_sect); |
| 510 | |
| 511 | /* Wait for ~1 second */ |
| 512 | dbg("%s: before long_delay\n", __FUNCTION__); |
| 513 | wait_for_ctrl_irq (ctrl); |
| 514 | dbg("%s: after long_delay\n", __FUNCTION__); |
| 515 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 516 | dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* Check for a power fault */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 518 | if (p_slot->status == 0xFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | /* power fault occurred, but it was benign */ |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 520 | dbg("%s: power fault\n", __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | rc = POWER_FAILURE; |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 522 | p_slot->status = 0; |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 523 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | } |
| 525 | |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 526 | if (shpchp_configure_device(p_slot)) { |
| 527 | err("Cannot add device at 0x%x:0x%x\n", p_slot->bus, |
| 528 | p_slot->device); |
| 529 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 531 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 532 | p_slot->status = 0; |
| 533 | p_slot->is_a_board = 0x01; |
| 534 | p_slot->pwr_save = 1; |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 535 | |
| 536 | /* Wait for exclusive access to hardware */ |
| 537 | down(&ctrl->crit_sect); |
| 538 | |
| 539 | p_slot->hpc_ops->green_led_on(p_slot); |
| 540 | |
| 541 | /* Wait for the command to complete */ |
| 542 | wait_for_ctrl_irq (ctrl); |
| 543 | |
| 544 | /* Done with exclusive hardware access */ |
| 545 | up(&ctrl->crit_sect); |
| 546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | return 0; |
rajesh.shah@intel.com | dbd7a78 | 2005-10-13 12:05:36 -0700 | [diff] [blame] | 548 | |
| 549 | err_exit: |
| 550 | /* Wait for exclusive access to hardware */ |
| 551 | down(&ctrl->crit_sect); |
| 552 | |
| 553 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
| 554 | rc = p_slot->hpc_ops->slot_disable(p_slot); |
| 555 | if (rc) { |
| 556 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); |
| 557 | /* Done with exclusive hardware access */ |
| 558 | up(&ctrl->crit_sect); |
| 559 | return rc; |
| 560 | } |
| 561 | /* Wait for the command to complete */ |
| 562 | wait_for_ctrl_irq (ctrl); |
| 563 | |
| 564 | rc = p_slot->hpc_ops->check_cmd_status(ctrl); |
| 565 | if (rc) { |
| 566 | err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc); |
| 567 | /* Done with exclusive hardware access */ |
| 568 | up(&ctrl->crit_sect); |
| 569 | return rc; |
| 570 | } |
| 571 | |
| 572 | /* Done with exclusive hardware access */ |
| 573 | up(&ctrl->crit_sect); |
| 574 | |
| 575 | return(rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | |
| 579 | /** |
| 580 | * remove_board - Turns off slot and LED's |
| 581 | * |
| 582 | */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 583 | static u32 remove_board(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | { |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 585 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | u8 hp_slot; |
| 587 | u32 rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 589 | if (shpchp_unconfigure_device(p_slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | return(1); |
| 591 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 592 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 594 | |
| 595 | dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); |
| 596 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | /* Change status to shutdown */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 598 | if (p_slot->is_a_board) |
| 599 | p_slot->status = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
| 601 | /* Wait for exclusive access to hardware */ |
| 602 | down(&ctrl->crit_sect); |
| 603 | |
| 604 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
| 605 | rc = p_slot->hpc_ops->slot_disable(p_slot); |
| 606 | if (rc) { |
| 607 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); |
| 608 | /* Done with exclusive hardware access */ |
| 609 | up(&ctrl->crit_sect); |
| 610 | return rc; |
| 611 | } |
| 612 | /* Wait for the command to complete */ |
| 613 | wait_for_ctrl_irq (ctrl); |
| 614 | |
| 615 | rc = p_slot->hpc_ops->check_cmd_status(ctrl); |
| 616 | if (rc) { |
| 617 | err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc); |
| 618 | /* Done with exclusive hardware access */ |
| 619 | up(&ctrl->crit_sect); |
| 620 | return rc; |
| 621 | } |
| 622 | |
| 623 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 624 | if (rc) { |
| 625 | err("%s: Issue of Set Attention command failed\n", __FUNCTION__); |
| 626 | /* Done with exclusive hardware access */ |
| 627 | up(&ctrl->crit_sect); |
| 628 | return rc; |
| 629 | } |
| 630 | /* Wait for the command to complete */ |
| 631 | wait_for_ctrl_irq (ctrl); |
| 632 | |
| 633 | /* Done with exclusive hardware access */ |
| 634 | up(&ctrl->crit_sect); |
| 635 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 636 | p_slot->pwr_save = 0; |
| 637 | p_slot->is_a_board = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | |
| 643 | static void pushbutton_helper_thread (unsigned long data) |
| 644 | { |
| 645 | pushbutton_pending = data; |
| 646 | |
| 647 | up(&event_semaphore); |
| 648 | } |
| 649 | |
| 650 | |
| 651 | /** |
| 652 | * shpchp_pushbutton_thread |
| 653 | * |
| 654 | * Scheduled procedure to handle blocking stuff for the pushbuttons |
| 655 | * Handles all pending events and exits. |
| 656 | * |
| 657 | */ |
| 658 | static void shpchp_pushbutton_thread (unsigned long slot) |
| 659 | { |
| 660 | struct slot *p_slot = (struct slot *) slot; |
| 661 | u8 getstatus; |
| 662 | |
| 663 | pushbutton_pending = 0; |
| 664 | |
| 665 | if (!p_slot) { |
| 666 | dbg("%s: Error! slot NULL\n", __FUNCTION__); |
| 667 | return; |
| 668 | } |
| 669 | |
| 670 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 671 | if (getstatus) { |
| 672 | p_slot->state = POWEROFF_STATE; |
| 673 | dbg("In power_down_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); |
| 674 | |
| 675 | shpchp_disable_slot(p_slot); |
| 676 | p_slot->state = STATIC_STATE; |
| 677 | } else { |
| 678 | p_slot->state = POWERON_STATE; |
| 679 | dbg("In add_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); |
| 680 | |
| 681 | if (shpchp_enable_slot(p_slot)) { |
| 682 | /* Wait for exclusive access to hardware */ |
| 683 | down(&p_slot->ctrl->crit_sect); |
| 684 | |
| 685 | p_slot->hpc_ops->green_led_off(p_slot); |
| 686 | |
| 687 | /* Wait for the command to complete */ |
| 688 | wait_for_ctrl_irq (p_slot->ctrl); |
| 689 | |
| 690 | /* Done with exclusive hardware access */ |
| 691 | up(&p_slot->ctrl->crit_sect); |
| 692 | } |
| 693 | p_slot->state = STATIC_STATE; |
| 694 | } |
| 695 | |
| 696 | return; |
| 697 | } |
| 698 | |
| 699 | |
| 700 | /* this is the main worker thread */ |
| 701 | static int event_thread(void* data) |
| 702 | { |
| 703 | struct controller *ctrl; |
| 704 | lock_kernel(); |
| 705 | daemonize("shpchpd_event"); |
| 706 | unlock_kernel(); |
| 707 | |
| 708 | while (1) { |
| 709 | dbg("!!!!event_thread sleeping\n"); |
| 710 | down_interruptible (&event_semaphore); |
| 711 | dbg("event_thread woken finished = %d\n", event_finished); |
| 712 | if (event_finished || signal_pending(current)) |
| 713 | break; |
| 714 | /* Do stuff here */ |
| 715 | if (pushbutton_pending) |
| 716 | shpchp_pushbutton_thread(pushbutton_pending); |
| 717 | else |
| 718 | for (ctrl = shpchp_ctrl_list; ctrl; ctrl=ctrl->next) |
| 719 | interrupt_event_handler(ctrl); |
| 720 | } |
| 721 | dbg("event_thread signals exit\n"); |
| 722 | up(&event_exit); |
| 723 | return 0; |
| 724 | } |
| 725 | |
| 726 | int shpchp_event_start_thread (void) |
| 727 | { |
| 728 | int pid; |
| 729 | |
| 730 | /* initialize our semaphores */ |
| 731 | init_MUTEX_LOCKED(&event_exit); |
| 732 | event_finished=0; |
| 733 | |
| 734 | init_MUTEX_LOCKED(&event_semaphore); |
| 735 | pid = kernel_thread(event_thread, NULL, 0); |
| 736 | |
| 737 | if (pid < 0) { |
| 738 | err ("Can't start up our event thread\n"); |
| 739 | return -1; |
| 740 | } |
| 741 | dbg("Our event thread pid = %d\n", pid); |
| 742 | return 0; |
| 743 | } |
| 744 | |
| 745 | |
| 746 | void shpchp_event_stop_thread (void) |
| 747 | { |
| 748 | event_finished = 1; |
| 749 | dbg("event_thread finish command given\n"); |
| 750 | up(&event_semaphore); |
| 751 | dbg("wait for event_thread to exit\n"); |
| 752 | down(&event_exit); |
| 753 | } |
| 754 | |
| 755 | |
| 756 | static int update_slot_info (struct slot *slot) |
| 757 | { |
| 758 | struct hotplug_slot_info *info; |
| 759 | int result; |
| 760 | |
| 761 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 762 | if (!info) |
| 763 | return -ENOMEM; |
| 764 | |
| 765 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); |
| 766 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); |
| 767 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); |
| 768 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); |
| 769 | |
| 770 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
| 771 | kfree (info); |
| 772 | return result; |
| 773 | } |
| 774 | |
| 775 | static void interrupt_event_handler(struct controller *ctrl) |
| 776 | { |
| 777 | int loop = 0; |
| 778 | int change = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | u8 hp_slot; |
| 780 | u8 getstatus; |
| 781 | struct slot *p_slot; |
| 782 | |
| 783 | dbg("%s:\n", __FUNCTION__); |
| 784 | while (change) { |
| 785 | change = 0; |
| 786 | |
| 787 | for (loop = 0; loop < 10; loop++) { |
| 788 | if (ctrl->event_queue[loop].event_type != 0) { |
| 789 | dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop, |
| 790 | ctrl->event_queue[loop].event_type); |
| 791 | hp_slot = ctrl->event_queue[loop].hp_slot; |
| 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 794 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 795 | dbg("%s: hp_slot %d, p_slot %p\n", |
| 796 | __FUNCTION__, hp_slot, p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | |
| 798 | if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) { |
| 799 | dbg("%s: button cancel\n", __FUNCTION__); |
| 800 | del_timer(&p_slot->task_event); |
| 801 | |
| 802 | switch (p_slot->state) { |
| 803 | case BLINKINGOFF_STATE: |
| 804 | /* Wait for exclusive access to hardware */ |
| 805 | down(&ctrl->crit_sect); |
| 806 | |
| 807 | p_slot->hpc_ops->green_led_on(p_slot); |
| 808 | /* Wait for the command to complete */ |
| 809 | wait_for_ctrl_irq (ctrl); |
| 810 | |
| 811 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 812 | |
| 813 | /* Wait for the command to complete */ |
| 814 | wait_for_ctrl_irq (ctrl); |
| 815 | |
| 816 | /* Done with exclusive hardware access */ |
| 817 | up(&ctrl->crit_sect); |
| 818 | break; |
| 819 | case BLINKINGON_STATE: |
| 820 | /* Wait for exclusive access to hardware */ |
| 821 | down(&ctrl->crit_sect); |
| 822 | |
| 823 | p_slot->hpc_ops->green_led_off(p_slot); |
| 824 | /* Wait for the command to complete */ |
| 825 | wait_for_ctrl_irq (ctrl); |
| 826 | |
| 827 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 828 | /* Wait for the command to complete */ |
| 829 | wait_for_ctrl_irq (ctrl); |
| 830 | |
| 831 | /* Done with exclusive hardware access */ |
| 832 | up(&ctrl->crit_sect); |
| 833 | |
| 834 | break; |
| 835 | default: |
| 836 | warn("Not a valid state\n"); |
| 837 | return; |
| 838 | } |
| 839 | info(msg_button_cancel, p_slot->number); |
| 840 | p_slot->state = STATIC_STATE; |
| 841 | } else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { |
| 842 | /* Button Pressed (No action on 1st press...) */ |
| 843 | dbg("%s: Button pressed\n", __FUNCTION__); |
| 844 | |
| 845 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 846 | if (getstatus) { |
| 847 | /* slot is on */ |
| 848 | dbg("%s: slot is on\n", __FUNCTION__); |
| 849 | p_slot->state = BLINKINGOFF_STATE; |
| 850 | info(msg_button_off, p_slot->number); |
| 851 | } else { |
| 852 | /* slot is off */ |
| 853 | dbg("%s: slot is off\n", __FUNCTION__); |
| 854 | p_slot->state = BLINKINGON_STATE; |
| 855 | info(msg_button_on, p_slot->number); |
| 856 | } |
| 857 | |
| 858 | /* Wait for exclusive access to hardware */ |
| 859 | down(&ctrl->crit_sect); |
| 860 | |
| 861 | /* blink green LED and turn off amber */ |
| 862 | p_slot->hpc_ops->green_led_blink(p_slot); |
| 863 | /* Wait for the command to complete */ |
| 864 | wait_for_ctrl_irq (ctrl); |
| 865 | |
| 866 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 867 | |
| 868 | /* Wait for the command to complete */ |
| 869 | wait_for_ctrl_irq (ctrl); |
| 870 | |
| 871 | /* Done with exclusive hardware access */ |
| 872 | up(&ctrl->crit_sect); |
| 873 | |
| 874 | init_timer(&p_slot->task_event); |
| 875 | p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ |
| 876 | p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread; |
| 877 | p_slot->task_event.data = (unsigned long) p_slot; |
| 878 | |
| 879 | dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot); |
| 880 | add_timer(&p_slot->task_event); |
| 881 | } else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { |
| 882 | /***********POWER FAULT********************/ |
| 883 | dbg("%s: power fault\n", __FUNCTION__); |
| 884 | /* Wait for exclusive access to hardware */ |
| 885 | down(&ctrl->crit_sect); |
| 886 | |
| 887 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
| 888 | /* Wait for the command to complete */ |
| 889 | wait_for_ctrl_irq (ctrl); |
| 890 | |
| 891 | p_slot->hpc_ops->green_led_off(p_slot); |
| 892 | /* Wait for the command to complete */ |
| 893 | wait_for_ctrl_irq (ctrl); |
| 894 | |
| 895 | /* Done with exclusive hardware access */ |
| 896 | up(&ctrl->crit_sect); |
| 897 | } else { |
| 898 | /* refresh notification */ |
| 899 | if (p_slot) |
| 900 | update_slot_info(p_slot); |
| 901 | } |
| 902 | |
| 903 | ctrl->event_queue[loop].event_type = 0; |
| 904 | |
| 905 | change = 1; |
| 906 | } |
| 907 | } /* End of FOR loop */ |
| 908 | } |
| 909 | |
| 910 | return; |
| 911 | } |
| 912 | |
| 913 | |
| 914 | int shpchp_enable_slot (struct slot *p_slot) |
| 915 | { |
| 916 | u8 getstatus = 0; |
| 917 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | |
| 919 | /* Check to see if (latch closed, card present, power off) */ |
| 920 | down(&p_slot->ctrl->crit_sect); |
| 921 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 922 | if (rc || !getstatus) { |
| 923 | info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); |
| 924 | up(&p_slot->ctrl->crit_sect); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 925 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | } |
| 927 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 928 | if (rc || getstatus) { |
| 929 | info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); |
| 930 | up(&p_slot->ctrl->crit_sect); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 931 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | } |
| 933 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 934 | if (rc || getstatus) { |
| 935 | info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number); |
| 936 | up(&p_slot->ctrl->crit_sect); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 937 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | } |
| 939 | up(&p_slot->ctrl->crit_sect); |
| 940 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 941 | p_slot->is_a_board = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | |
| 943 | /* We have to save the presence info for these slots */ |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 944 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
| 945 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); |
| 946 | dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__, p_slot->pwr_save); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 949 | rc = board_added(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | if (rc) { |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 951 | p_slot->hpc_ops->get_adapter_status(p_slot, |
| 952 | &(p_slot->presence_save)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | } |
| 955 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 956 | update_slot_info(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | return rc; |
| 958 | } |
| 959 | |
| 960 | |
| 961 | int shpchp_disable_slot (struct slot *p_slot) |
| 962 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | u8 getstatus = 0; |
| 964 | u32 rc = 0; |
| 965 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | |
| 967 | if (!p_slot->ctrl) |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 968 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | /* Check to see if (latch closed, card present, power on) */ |
| 971 | down(&p_slot->ctrl->crit_sect); |
| 972 | |
| 973 | ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 974 | if (ret || !getstatus) { |
| 975 | info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); |
| 976 | up(&p_slot->ctrl->crit_sect); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 977 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | } |
| 979 | ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 980 | if (ret || getstatus) { |
| 981 | info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); |
| 982 | up(&p_slot->ctrl->crit_sect); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 983 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | } |
| 985 | ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 986 | if (ret || !getstatus) { |
| 987 | info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number); |
| 988 | up(&p_slot->ctrl->crit_sect); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 989 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | } |
| 991 | up(&p_slot->ctrl->crit_sect); |
| 992 | |
rajesh.shah@intel.com | 2178bfa | 2005-10-13 12:05:41 -0700 | [diff] [blame^] | 993 | rc = remove_board(p_slot); |
| 994 | update_slot_info(p_slot); |
Dely Sy | ee17fd9 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 995 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
| 997 | |