Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Compaq 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 | * |
| 8 | * All rights reserved. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or (at |
| 13 | * your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, but |
| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 18 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 19 | * details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 24 | * |
| 25 | * Send feedback to <greg@kroah.com> |
| 26 | * |
| 27 | */ |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/module.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/workqueue.h> |
| 34 | #include <linux/interrupt.h> |
| 35 | #include <linux/delay.h> |
| 36 | #include <linux/wait.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/pci.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 38 | #include <linux/pci_hotplug.h> |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 39 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "cpqphp.h" |
| 41 | |
| 42 | static u32 configure_new_device(struct controller* ctrl, struct pci_func *func, |
| 43 | u8 behind_bridge, struct resource_lists *resources); |
| 44 | static int configure_new_function(struct controller* ctrl, struct pci_func *func, |
| 45 | u8 behind_bridge, struct resource_lists *resources); |
| 46 | static void interrupt_event_handler(struct controller *ctrl); |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 49 | static struct task_struct *cpqhp_event_thread; |
| 50 | static unsigned long pushbutton_pending; /* = 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | /* delay is in jiffies to wait for */ |
| 53 | static void long_delay(int delay) |
| 54 | { |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 55 | /* |
| 56 | * XXX(hch): if someone is bored please convert all callers |
| 57 | * to call msleep_interruptible directly. They really want |
| 58 | * to specify timeouts in natural units and spend a lot of |
| 59 | * effort converting them to jiffies.. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | msleep_interruptible(jiffies_to_msecs(delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | |
| 65 | /* FIXME: The following line needs to be somewhere else... */ |
| 66 | #define WRONG_BUS_FREQUENCY 0x07 |
| 67 | static u8 handle_switch_change(u8 change, struct controller * ctrl) |
| 68 | { |
| 69 | int hp_slot; |
| 70 | u8 rc = 0; |
| 71 | u16 temp_word; |
| 72 | struct pci_func *func; |
| 73 | struct event_info *taskInfo; |
| 74 | |
| 75 | if (!change) |
| 76 | return 0; |
| 77 | |
| 78 | /* Switch Change */ |
| 79 | dbg("cpqsbd: Switch interrupt received.\n"); |
| 80 | |
| 81 | for (hp_slot = 0; hp_slot < 6; hp_slot++) { |
| 82 | if (change & (0x1L << hp_slot)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 83 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | * this one changed. |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 85 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | func = cpqhp_slot_find(ctrl->bus, |
| 87 | (hp_slot + ctrl->slot_device_offset), 0); |
| 88 | |
| 89 | /* this is the structure that tells the worker thread |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 90 | * what to do |
| 91 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
| 93 | ctrl->next_event = (ctrl->next_event + 1) % 10; |
| 94 | taskInfo->hp_slot = hp_slot; |
| 95 | |
| 96 | rc++; |
| 97 | |
| 98 | temp_word = ctrl->ctrl_int_comp >> 16; |
| 99 | func->presence_save = (temp_word >> hp_slot) & 0x01; |
| 100 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; |
| 101 | |
| 102 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 103 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | * Switch opened |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 105 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | func->switch_save = 0; |
| 108 | |
| 109 | taskInfo->event_type = INT_SWITCH_OPEN; |
| 110 | } else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 111 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | * Switch closed |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 113 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
| 115 | func->switch_save = 0x10; |
| 116 | |
| 117 | taskInfo->event_type = INT_SWITCH_CLOSE; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | return rc; |
| 123 | } |
| 124 | |
| 125 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 126 | * cpqhp_find_slot - find the struct slot of given device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | * @ctrl: scan lots of this controller |
| 128 | * @device: the device id to find |
| 129 | */ |
| 130 | static struct slot *cpqhp_find_slot(struct controller *ctrl, u8 device) |
| 131 | { |
| 132 | struct slot *slot = ctrl->slot; |
| 133 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 134 | while (slot && (slot->device != device)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | slot = slot->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
| 137 | return slot; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | static u8 handle_presence_change(u16 change, struct controller * ctrl) |
| 142 | { |
| 143 | int hp_slot; |
| 144 | u8 rc = 0; |
| 145 | u8 temp_byte; |
| 146 | u16 temp_word; |
| 147 | struct pci_func *func; |
| 148 | struct event_info *taskInfo; |
| 149 | struct slot *p_slot; |
| 150 | |
| 151 | if (!change) |
| 152 | return 0; |
| 153 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 154 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | * Presence Change |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 156 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | dbg("cpqsbd: Presence/Notify input change.\n"); |
| 158 | dbg(" Changed bits are 0x%4.4x\n", change ); |
| 159 | |
| 160 | for (hp_slot = 0; hp_slot < 6; hp_slot++) { |
| 161 | if (change & (0x0101 << hp_slot)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 162 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | * this one changed. |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 164 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | func = cpqhp_slot_find(ctrl->bus, |
| 166 | (hp_slot + ctrl->slot_device_offset), 0); |
| 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 | |
| 174 | p_slot = cpqhp_find_slot(ctrl, hp_slot + (readb(ctrl->hpc_reg + SLOT_MASK) >> 4)); |
| 175 | if (!p_slot) |
| 176 | return 0; |
| 177 | |
| 178 | /* If the switch closed, must be a button |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 179 | * If not in button mode, nevermind |
| 180 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | if (func->switch_save && (ctrl->push_button == 1)) { |
| 182 | temp_word = ctrl->ctrl_int_comp >> 16; |
| 183 | temp_byte = (temp_word >> hp_slot) & 0x01; |
| 184 | temp_byte |= (temp_word >> (hp_slot + 7)) & 0x02; |
| 185 | |
| 186 | if (temp_byte != func->presence_save) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 187 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | * button Pressed (doesn't do anything) |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 189 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | dbg("hp_slot %d button pressed\n", hp_slot); |
| 191 | taskInfo->event_type = INT_BUTTON_PRESS; |
| 192 | } else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 193 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | * button Released - TAKE ACTION!!!! |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 195 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | dbg("hp_slot %d button released\n", hp_slot); |
| 197 | taskInfo->event_type = INT_BUTTON_RELEASE; |
| 198 | |
| 199 | /* Cancel if we are still blinking */ |
| 200 | if ((p_slot->state == BLINKINGON_STATE) |
| 201 | || (p_slot->state == BLINKINGOFF_STATE)) { |
| 202 | taskInfo->event_type = INT_BUTTON_CANCEL; |
| 203 | dbg("hp_slot %d button cancel\n", hp_slot); |
| 204 | } else if ((p_slot->state == POWERON_STATE) |
| 205 | || (p_slot->state == POWEROFF_STATE)) { |
| 206 | /* info(msg_button_ignore, p_slot->number); */ |
| 207 | taskInfo->event_type = INT_BUTTON_IGNORE; |
| 208 | dbg("hp_slot %d button ignore\n", hp_slot); |
| 209 | } |
| 210 | } |
| 211 | } else { |
| 212 | /* Switch is open, assume a presence change |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 213 | * Save the presence state |
| 214 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | temp_word = ctrl->ctrl_int_comp >> 16; |
| 216 | func->presence_save = (temp_word >> hp_slot) & 0x01; |
| 217 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; |
| 218 | |
| 219 | if ((!(ctrl->ctrl_int_comp & (0x010000 << hp_slot))) || |
| 220 | (!(ctrl->ctrl_int_comp & (0x01000000 << hp_slot)))) { |
| 221 | /* Present */ |
| 222 | taskInfo->event_type = INT_PRESENCE_ON; |
| 223 | } else { |
| 224 | /* Not Present */ |
| 225 | taskInfo->event_type = INT_PRESENCE_OFF; |
| 226 | } |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | return rc; |
| 232 | } |
| 233 | |
| 234 | |
| 235 | static u8 handle_power_fault(u8 change, struct controller * ctrl) |
| 236 | { |
| 237 | int hp_slot; |
| 238 | u8 rc = 0; |
| 239 | struct pci_func *func; |
| 240 | struct event_info *taskInfo; |
| 241 | |
| 242 | if (!change) |
| 243 | return 0; |
| 244 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 245 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | * power fault |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 247 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
| 249 | info("power fault interrupt\n"); |
| 250 | |
| 251 | for (hp_slot = 0; hp_slot < 6; hp_slot++) { |
| 252 | if (change & (0x01 << hp_slot)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 253 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | * this one changed. |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 255 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | func = cpqhp_slot_find(ctrl->bus, |
| 257 | (hp_slot + ctrl->slot_device_offset), 0); |
| 258 | |
| 259 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
| 260 | ctrl->next_event = (ctrl->next_event + 1) % 10; |
| 261 | taskInfo->hp_slot = hp_slot; |
| 262 | |
| 263 | rc++; |
| 264 | |
| 265 | if (ctrl->ctrl_int_comp & (0x00000100 << hp_slot)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 266 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | * power fault Cleared |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 268 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | func->status = 0x00; |
| 270 | |
| 271 | taskInfo->event_type = INT_POWER_FAULT_CLEAR; |
| 272 | } else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 273 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | * power fault |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 275 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | taskInfo->event_type = INT_POWER_FAULT; |
| 277 | |
| 278 | if (ctrl->rev < 4) { |
| 279 | amber_LED_on (ctrl, hp_slot); |
| 280 | green_LED_off (ctrl, hp_slot); |
| 281 | set_SOGO (ctrl); |
| 282 | |
| 283 | /* this is a fatal condition, we want |
| 284 | * to crash the machine to protect from |
| 285 | * data corruption. simulated_NMI |
| 286 | * shouldn't ever return */ |
| 287 | /* FIXME |
| 288 | simulated_NMI(hp_slot, ctrl); */ |
| 289 | |
| 290 | /* The following code causes a software |
| 291 | * crash just in case simulated_NMI did |
| 292 | * return */ |
| 293 | /*FIXME |
| 294 | panic(msg_power_fault); */ |
| 295 | } else { |
| 296 | /* set power fault status for this board */ |
| 297 | func->status = 0xFF; |
| 298 | info("power fault bit %x set\n", hp_slot); |
| 299 | } |
| 300 | } |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | return rc; |
| 305 | } |
| 306 | |
| 307 | |
| 308 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 309 | * sort_by_size - sort nodes on the list by their length, smallest first. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | * @head: list to sort |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | */ |
| 312 | static int sort_by_size(struct pci_resource **head) |
| 313 | { |
| 314 | struct pci_resource *current_res; |
| 315 | struct pci_resource *next_res; |
| 316 | int out_of_order = 1; |
| 317 | |
| 318 | if (!(*head)) |
| 319 | return 1; |
| 320 | |
| 321 | if (!((*head)->next)) |
| 322 | return 0; |
| 323 | |
| 324 | while (out_of_order) { |
| 325 | out_of_order = 0; |
| 326 | |
| 327 | /* Special case for swapping list head */ |
| 328 | if (((*head)->next) && |
| 329 | ((*head)->length > (*head)->next->length)) { |
| 330 | out_of_order++; |
| 331 | current_res = *head; |
| 332 | *head = (*head)->next; |
| 333 | current_res->next = (*head)->next; |
| 334 | (*head)->next = current_res; |
| 335 | } |
| 336 | |
| 337 | current_res = *head; |
| 338 | |
| 339 | while (current_res->next && current_res->next->next) { |
| 340 | if (current_res->next->length > current_res->next->next->length) { |
| 341 | out_of_order++; |
| 342 | next_res = current_res->next; |
| 343 | current_res->next = current_res->next->next; |
| 344 | current_res = current_res->next; |
| 345 | next_res->next = current_res->next; |
| 346 | current_res->next = next_res; |
| 347 | } else |
| 348 | current_res = current_res->next; |
| 349 | } |
| 350 | } /* End of out_of_order loop */ |
| 351 | |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | |
| 356 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 357 | * sort_by_max_size - sort nodes on the list by their length, largest first. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | * @head: list to sort |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | */ |
| 360 | static int sort_by_max_size(struct pci_resource **head) |
| 361 | { |
| 362 | struct pci_resource *current_res; |
| 363 | struct pci_resource *next_res; |
| 364 | int out_of_order = 1; |
| 365 | |
| 366 | if (!(*head)) |
| 367 | return 1; |
| 368 | |
| 369 | if (!((*head)->next)) |
| 370 | return 0; |
| 371 | |
| 372 | while (out_of_order) { |
| 373 | out_of_order = 0; |
| 374 | |
| 375 | /* Special case for swapping list head */ |
| 376 | if (((*head)->next) && |
| 377 | ((*head)->length < (*head)->next->length)) { |
| 378 | out_of_order++; |
| 379 | current_res = *head; |
| 380 | *head = (*head)->next; |
| 381 | current_res->next = (*head)->next; |
| 382 | (*head)->next = current_res; |
| 383 | } |
| 384 | |
| 385 | current_res = *head; |
| 386 | |
| 387 | while (current_res->next && current_res->next->next) { |
| 388 | if (current_res->next->length < current_res->next->next->length) { |
| 389 | out_of_order++; |
| 390 | next_res = current_res->next; |
| 391 | current_res->next = current_res->next->next; |
| 392 | current_res = current_res->next; |
| 393 | next_res->next = current_res->next; |
| 394 | current_res->next = next_res; |
| 395 | } else |
| 396 | current_res = current_res->next; |
| 397 | } |
| 398 | } /* End of out_of_order loop */ |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | |
| 404 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 405 | * do_pre_bridge_resource_split - find node of resources that are unused |
| 406 | * @head: new list head |
| 407 | * @orig_head: original list head |
| 408 | * @alignment: max node size (?) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | */ |
| 410 | static struct pci_resource *do_pre_bridge_resource_split(struct pci_resource **head, |
| 411 | struct pci_resource **orig_head, u32 alignment) |
| 412 | { |
| 413 | struct pci_resource *prevnode = NULL; |
| 414 | struct pci_resource *node; |
| 415 | struct pci_resource *split_node; |
| 416 | u32 rc; |
| 417 | u32 temp_dword; |
| 418 | dbg("do_pre_bridge_resource_split\n"); |
| 419 | |
| 420 | if (!(*head) || !(*orig_head)) |
| 421 | return NULL; |
| 422 | |
| 423 | rc = cpqhp_resource_sort_and_combine(head); |
| 424 | |
| 425 | if (rc) |
| 426 | return NULL; |
| 427 | |
| 428 | if ((*head)->base != (*orig_head)->base) |
| 429 | return NULL; |
| 430 | |
| 431 | if ((*head)->length == (*orig_head)->length) |
| 432 | return NULL; |
| 433 | |
| 434 | |
| 435 | /* If we got here, there the bridge requires some of the resource, but |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 436 | * we may be able to split some off of the front |
| 437 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | node = *head; |
| 440 | |
| 441 | if (node->length & (alignment -1)) { |
| 442 | /* this one isn't an aligned length, so we'll make a new entry |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 443 | * and split it up. |
| 444 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 446 | |
| 447 | if (!split_node) |
| 448 | return NULL; |
| 449 | |
| 450 | temp_dword = (node->length | (alignment-1)) + 1 - alignment; |
| 451 | |
| 452 | split_node->base = node->base; |
| 453 | split_node->length = temp_dword; |
| 454 | |
| 455 | node->length -= temp_dword; |
| 456 | node->base += split_node->length; |
| 457 | |
| 458 | /* Put it in the list */ |
| 459 | *head = split_node; |
| 460 | split_node->next = node; |
| 461 | } |
| 462 | |
| 463 | if (node->length < alignment) |
| 464 | return NULL; |
| 465 | |
| 466 | /* Now unlink it */ |
| 467 | if (*head == node) { |
| 468 | *head = node->next; |
| 469 | } else { |
| 470 | prevnode = *head; |
| 471 | while (prevnode->next != node) |
| 472 | prevnode = prevnode->next; |
| 473 | |
| 474 | prevnode->next = node->next; |
| 475 | } |
| 476 | node->next = NULL; |
| 477 | |
| 478 | return node; |
| 479 | } |
| 480 | |
| 481 | |
| 482 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 483 | * do_bridge_resource_split - find one node of resources that aren't in use |
| 484 | * @head: list head |
| 485 | * @alignment: max node size (?) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | */ |
| 487 | static struct pci_resource *do_bridge_resource_split(struct pci_resource **head, u32 alignment) |
| 488 | { |
| 489 | struct pci_resource *prevnode = NULL; |
| 490 | struct pci_resource *node; |
| 491 | u32 rc; |
| 492 | u32 temp_dword; |
| 493 | |
| 494 | rc = cpqhp_resource_sort_and_combine(head); |
| 495 | |
| 496 | if (rc) |
| 497 | return NULL; |
| 498 | |
| 499 | node = *head; |
| 500 | |
| 501 | while (node->next) { |
| 502 | prevnode = node; |
| 503 | node = node->next; |
| 504 | kfree(prevnode); |
| 505 | } |
| 506 | |
| 507 | if (node->length < alignment) |
| 508 | goto error; |
| 509 | |
| 510 | if (node->base & (alignment - 1)) { |
| 511 | /* Short circuit if adjusted size is too small */ |
| 512 | temp_dword = (node->base | (alignment-1)) + 1; |
| 513 | if ((node->length - (temp_dword - node->base)) < alignment) |
| 514 | goto error; |
| 515 | |
| 516 | node->length -= (temp_dword - node->base); |
| 517 | node->base = temp_dword; |
| 518 | } |
| 519 | |
| 520 | if (node->length & (alignment - 1)) |
| 521 | /* There's stuff in use after this node */ |
| 522 | goto error; |
| 523 | |
| 524 | return node; |
| 525 | error: |
| 526 | kfree(node); |
| 527 | return NULL; |
| 528 | } |
| 529 | |
| 530 | |
| 531 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 532 | * get_io_resource - find first node of given size not in ISA aliasing window. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | * @head: list to search |
| 534 | * @size: size of node to find, must be a power of two. |
| 535 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 536 | * Description: This function sorts the resource list by size and then returns |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | * returns the first node of "size" length that is not in the ISA aliasing |
| 538 | * window. If it finds a node larger than "size" it will split it up. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | */ |
| 540 | static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size) |
| 541 | { |
| 542 | struct pci_resource *prevnode; |
| 543 | struct pci_resource *node; |
| 544 | struct pci_resource *split_node; |
| 545 | u32 temp_dword; |
| 546 | |
| 547 | if (!(*head)) |
| 548 | return NULL; |
| 549 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 550 | if (cpqhp_resource_sort_and_combine(head)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | return NULL; |
| 552 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 553 | if (sort_by_size(head)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | return NULL; |
| 555 | |
| 556 | for (node = *head; node; node = node->next) { |
| 557 | if (node->length < size) |
| 558 | continue; |
| 559 | |
| 560 | if (node->base & (size - 1)) { |
| 561 | /* this one isn't base aligned properly |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 562 | * so we'll make a new entry and split it up |
| 563 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | temp_dword = (node->base | (size-1)) + 1; |
| 565 | |
| 566 | /* Short circuit if adjusted size is too small */ |
| 567 | if ((node->length - (temp_dword - node->base)) < size) |
| 568 | continue; |
| 569 | |
| 570 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 571 | |
| 572 | if (!split_node) |
| 573 | return NULL; |
| 574 | |
| 575 | split_node->base = node->base; |
| 576 | split_node->length = temp_dword - node->base; |
| 577 | node->base = temp_dword; |
| 578 | node->length -= split_node->length; |
| 579 | |
| 580 | /* Put it in the list */ |
| 581 | split_node->next = node->next; |
| 582 | node->next = split_node; |
| 583 | } /* End of non-aligned base */ |
| 584 | |
| 585 | /* Don't need to check if too small since we already did */ |
| 586 | if (node->length > size) { |
| 587 | /* this one is longer than we need |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 588 | * so we'll make a new entry and split it up |
| 589 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 591 | |
| 592 | if (!split_node) |
| 593 | return NULL; |
| 594 | |
| 595 | split_node->base = node->base + size; |
| 596 | split_node->length = node->length - size; |
| 597 | node->length = size; |
| 598 | |
| 599 | /* Put it in the list */ |
| 600 | split_node->next = node->next; |
| 601 | node->next = split_node; |
| 602 | } /* End of too big on top end */ |
| 603 | |
| 604 | /* For IO make sure it's not in the ISA aliasing space */ |
| 605 | if (node->base & 0x300L) |
| 606 | continue; |
| 607 | |
| 608 | /* If we got here, then it is the right size |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 609 | * Now take it out of the list and break |
| 610 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | if (*head == node) { |
| 612 | *head = node->next; |
| 613 | } else { |
| 614 | prevnode = *head; |
| 615 | while (prevnode->next != node) |
| 616 | prevnode = prevnode->next; |
| 617 | |
| 618 | prevnode->next = node->next; |
| 619 | } |
| 620 | node->next = NULL; |
| 621 | break; |
| 622 | } |
| 623 | |
| 624 | return node; |
| 625 | } |
| 626 | |
| 627 | |
| 628 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 629 | * get_max_resource - get largest node which has at least the given size. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | * @head: the list to search the node in |
| 631 | * @size: the minimum size of the node to find |
| 632 | * |
| 633 | * Description: Gets the largest node that is at least "size" big from the |
| 634 | * list pointed to by head. It aligns the node on top and bottom |
| 635 | * to "size" alignment before returning it. |
| 636 | */ |
| 637 | static struct pci_resource *get_max_resource(struct pci_resource **head, u32 size) |
| 638 | { |
| 639 | struct pci_resource *max; |
| 640 | struct pci_resource *temp; |
| 641 | struct pci_resource *split_node; |
| 642 | u32 temp_dword; |
| 643 | |
| 644 | if (cpqhp_resource_sort_and_combine(head)) |
| 645 | return NULL; |
| 646 | |
| 647 | if (sort_by_max_size(head)) |
| 648 | return NULL; |
| 649 | |
| 650 | for (max = *head; max; max = max->next) { |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 651 | /* If not big enough we could probably just bail, |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 652 | * instead we'll continue to the next. |
| 653 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | if (max->length < size) |
| 655 | continue; |
| 656 | |
| 657 | if (max->base & (size - 1)) { |
| 658 | /* this one isn't base aligned properly |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 659 | * so we'll make a new entry and split it up |
| 660 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | temp_dword = (max->base | (size-1)) + 1; |
| 662 | |
| 663 | /* Short circuit if adjusted size is too small */ |
| 664 | if ((max->length - (temp_dword - max->base)) < size) |
| 665 | continue; |
| 666 | |
| 667 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 668 | |
| 669 | if (!split_node) |
| 670 | return NULL; |
| 671 | |
| 672 | split_node->base = max->base; |
| 673 | split_node->length = temp_dword - max->base; |
| 674 | max->base = temp_dword; |
| 675 | max->length -= split_node->length; |
| 676 | |
| 677 | split_node->next = max->next; |
| 678 | max->next = split_node; |
| 679 | } |
| 680 | |
| 681 | if ((max->base + max->length) & (size - 1)) { |
| 682 | /* this one isn't end aligned properly at the top |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 683 | * so we'll make a new entry and split it up |
| 684 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 686 | |
| 687 | if (!split_node) |
| 688 | return NULL; |
| 689 | temp_dword = ((max->base + max->length) & ~(size - 1)); |
| 690 | split_node->base = temp_dword; |
| 691 | split_node->length = max->length + max->base |
| 692 | - split_node->base; |
| 693 | max->length -= split_node->length; |
| 694 | |
| 695 | split_node->next = max->next; |
| 696 | max->next = split_node; |
| 697 | } |
| 698 | |
| 699 | /* Make sure it didn't shrink too much when we aligned it */ |
| 700 | if (max->length < size) |
| 701 | continue; |
| 702 | |
| 703 | /* Now take it out of the list */ |
| 704 | temp = *head; |
| 705 | if (temp == max) { |
| 706 | *head = max->next; |
| 707 | } else { |
| 708 | while (temp && temp->next != max) { |
| 709 | temp = temp->next; |
| 710 | } |
| 711 | |
| 712 | temp->next = max->next; |
| 713 | } |
| 714 | |
| 715 | max->next = NULL; |
| 716 | break; |
| 717 | } |
| 718 | |
| 719 | return max; |
| 720 | } |
| 721 | |
| 722 | |
| 723 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 724 | * get_resource - find resource of given size and split up larger ones. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | * @head: the list to search for resources |
| 726 | * @size: the size limit to use |
| 727 | * |
| 728 | * Description: This function sorts the resource list by size and then |
| 729 | * returns the first node of "size" length. If it finds a node |
| 730 | * larger than "size" it will split it up. |
| 731 | * |
| 732 | * size must be a power of two. |
| 733 | */ |
| 734 | static struct pci_resource *get_resource(struct pci_resource **head, u32 size) |
| 735 | { |
| 736 | struct pci_resource *prevnode; |
| 737 | struct pci_resource *node; |
| 738 | struct pci_resource *split_node; |
| 739 | u32 temp_dword; |
| 740 | |
| 741 | if (cpqhp_resource_sort_and_combine(head)) |
| 742 | return NULL; |
| 743 | |
| 744 | if (sort_by_size(head)) |
| 745 | return NULL; |
| 746 | |
| 747 | for (node = *head; node; node = node->next) { |
| 748 | dbg("%s: req_size =%x node=%p, base=%x, length=%x\n", |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 749 | __func__, size, node, node->base, node->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | if (node->length < size) |
| 751 | continue; |
| 752 | |
| 753 | if (node->base & (size - 1)) { |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 754 | dbg("%s: not aligned\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | /* this one isn't base aligned properly |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 756 | * so we'll make a new entry and split it up |
| 757 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | temp_dword = (node->base | (size-1)) + 1; |
| 759 | |
| 760 | /* Short circuit if adjusted size is too small */ |
| 761 | if ((node->length - (temp_dword - node->base)) < size) |
| 762 | continue; |
| 763 | |
| 764 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 765 | |
| 766 | if (!split_node) |
| 767 | return NULL; |
| 768 | |
| 769 | split_node->base = node->base; |
| 770 | split_node->length = temp_dword - node->base; |
| 771 | node->base = temp_dword; |
| 772 | node->length -= split_node->length; |
| 773 | |
| 774 | split_node->next = node->next; |
| 775 | node->next = split_node; |
| 776 | } /* End of non-aligned base */ |
| 777 | |
| 778 | /* Don't need to check if too small since we already did */ |
| 779 | if (node->length > size) { |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 780 | dbg("%s: too big\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | /* this one is longer than we need |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 782 | * so we'll make a new entry and split it up |
| 783 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
| 785 | |
| 786 | if (!split_node) |
| 787 | return NULL; |
| 788 | |
| 789 | split_node->base = node->base + size; |
| 790 | split_node->length = node->length - size; |
| 791 | node->length = size; |
| 792 | |
| 793 | /* Put it in the list */ |
| 794 | split_node->next = node->next; |
| 795 | node->next = split_node; |
| 796 | } /* End of too big on top end */ |
| 797 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 798 | dbg("%s: got one!!!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | /* If we got here, then it is the right size |
| 800 | * Now take it out of the list */ |
| 801 | if (*head == node) { |
| 802 | *head = node->next; |
| 803 | } else { |
| 804 | prevnode = *head; |
| 805 | while (prevnode->next != node) |
| 806 | prevnode = prevnode->next; |
| 807 | |
| 808 | prevnode->next = node->next; |
| 809 | } |
| 810 | node->next = NULL; |
| 811 | break; |
| 812 | } |
| 813 | return node; |
| 814 | } |
| 815 | |
| 816 | |
| 817 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 818 | * cpqhp_resource_sort_and_combine - sort nodes by base addresses and clean up |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | * @head: the list to sort and clean up |
| 820 | * |
| 821 | * Description: Sorts all of the nodes in the list in ascending order by |
| 822 | * their base addresses. Also does garbage collection by |
| 823 | * combining adjacent nodes. |
| 824 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 825 | * Returns %0 if success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | */ |
| 827 | int cpqhp_resource_sort_and_combine(struct pci_resource **head) |
| 828 | { |
| 829 | struct pci_resource *node1; |
| 830 | struct pci_resource *node2; |
| 831 | int out_of_order = 1; |
| 832 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 833 | dbg("%s: head = %p, *head = %p\n", __func__, head, *head); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | |
| 835 | if (!(*head)) |
| 836 | return 1; |
| 837 | |
| 838 | dbg("*head->next = %p\n",(*head)->next); |
| 839 | |
| 840 | if (!(*head)->next) |
| 841 | return 0; /* only one item on the list, already sorted! */ |
| 842 | |
| 843 | dbg("*head->base = 0x%x\n",(*head)->base); |
| 844 | dbg("*head->next->base = 0x%x\n",(*head)->next->base); |
| 845 | while (out_of_order) { |
| 846 | out_of_order = 0; |
| 847 | |
| 848 | /* Special case for swapping list head */ |
| 849 | if (((*head)->next) && |
| 850 | ((*head)->base > (*head)->next->base)) { |
| 851 | node1 = *head; |
| 852 | (*head) = (*head)->next; |
| 853 | node1->next = (*head)->next; |
| 854 | (*head)->next = node1; |
| 855 | out_of_order++; |
| 856 | } |
| 857 | |
| 858 | node1 = (*head); |
| 859 | |
| 860 | while (node1->next && node1->next->next) { |
| 861 | if (node1->next->base > node1->next->next->base) { |
| 862 | out_of_order++; |
| 863 | node2 = node1->next; |
| 864 | node1->next = node1->next->next; |
| 865 | node1 = node1->next; |
| 866 | node2->next = node1->next; |
| 867 | node1->next = node2; |
| 868 | } else |
| 869 | node1 = node1->next; |
| 870 | } |
| 871 | } /* End of out_of_order loop */ |
| 872 | |
| 873 | node1 = *head; |
| 874 | |
| 875 | while (node1 && node1->next) { |
| 876 | if ((node1->base + node1->length) == node1->next->base) { |
| 877 | /* Combine */ |
| 878 | dbg("8..\n"); |
| 879 | node1->length += node1->next->length; |
| 880 | node2 = node1->next; |
| 881 | node1->next = node1->next->next; |
| 882 | kfree(node2); |
| 883 | } else |
| 884 | node1 = node1->next; |
| 885 | } |
| 886 | |
| 887 | return 0; |
| 888 | } |
| 889 | |
| 890 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 891 | irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | { |
| 893 | struct controller *ctrl = data; |
| 894 | u8 schedule_flag = 0; |
| 895 | u8 reset; |
| 896 | u16 misc; |
| 897 | u32 Diff; |
| 898 | u32 temp_dword; |
| 899 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 900 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | misc = readw(ctrl->hpc_reg + MISC); |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 902 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | * Check to see if it was our interrupt |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 904 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | if (!(misc & 0x000C)) { |
| 906 | return IRQ_NONE; |
| 907 | } |
| 908 | |
| 909 | if (misc & 0x0004) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 910 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | * Serial Output interrupt Pending |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 912 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
| 914 | /* Clear the interrupt */ |
| 915 | misc |= 0x0004; |
| 916 | writew(misc, ctrl->hpc_reg + MISC); |
| 917 | |
| 918 | /* Read to clear posted writes */ |
| 919 | misc = readw(ctrl->hpc_reg + MISC); |
| 920 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 921 | dbg ("%s - waking up\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | wake_up_interruptible(&ctrl->queue); |
| 923 | } |
| 924 | |
| 925 | if (misc & 0x0008) { |
| 926 | /* General-interrupt-input interrupt Pending */ |
| 927 | Diff = readl(ctrl->hpc_reg + INT_INPUT_CLEAR) ^ ctrl->ctrl_int_comp; |
| 928 | |
| 929 | ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 930 | |
| 931 | /* Clear the interrupt */ |
| 932 | writel(Diff, ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 933 | |
| 934 | /* Read it back to clear any posted writes */ |
| 935 | temp_dword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 936 | |
| 937 | if (!Diff) |
| 938 | /* Clear all interrupts */ |
| 939 | writel(0xFFFFFFFF, ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 940 | |
| 941 | schedule_flag += handle_switch_change((u8)(Diff & 0xFFL), ctrl); |
| 942 | schedule_flag += handle_presence_change((u16)((Diff & 0xFFFF0000L) >> 16), ctrl); |
| 943 | schedule_flag += handle_power_fault((u8)((Diff & 0xFF00L) >> 8), ctrl); |
| 944 | } |
| 945 | |
| 946 | reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE); |
| 947 | if (reset & 0x40) { |
| 948 | /* Bus reset has completed */ |
| 949 | reset &= 0xCF; |
| 950 | writeb(reset, ctrl->hpc_reg + RESET_FREQ_MODE); |
| 951 | reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE); |
| 952 | wake_up_interruptible(&ctrl->queue); |
| 953 | } |
| 954 | |
| 955 | if (schedule_flag) { |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 956 | wake_up_process(cpqhp_event_thread); |
| 957 | dbg("Waking even thread"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | } |
| 959 | return IRQ_HANDLED; |
| 960 | } |
| 961 | |
| 962 | |
| 963 | /** |
| 964 | * cpqhp_slot_create - Creates a node and adds it to the proper bus. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 965 | * @busnumber: bus where new node is to be located |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 967 | * Returns pointer to the new node or %NULL if unsuccessful. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | */ |
| 969 | struct pci_func *cpqhp_slot_create(u8 busnumber) |
| 970 | { |
| 971 | struct pci_func *new_slot; |
| 972 | struct pci_func *next; |
| 973 | |
Mariusz Kozlowski | 73a985a | 2007-07-31 19:14:28 +0200 | [diff] [blame] | 974 | new_slot = kzalloc(sizeof(*new_slot), GFP_KERNEL); |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 975 | if (new_slot == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | return new_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | new_slot->next = NULL; |
| 979 | new_slot->configured = 1; |
| 980 | |
| 981 | if (cpqhp_slot_list[busnumber] == NULL) { |
| 982 | cpqhp_slot_list[busnumber] = new_slot; |
| 983 | } else { |
| 984 | next = cpqhp_slot_list[busnumber]; |
| 985 | while (next->next != NULL) |
| 986 | next = next->next; |
| 987 | next->next = new_slot; |
| 988 | } |
| 989 | return new_slot; |
| 990 | } |
| 991 | |
| 992 | |
| 993 | /** |
| 994 | * slot_remove - Removes a node from the linked list of slots. |
| 995 | * @old_slot: slot to remove |
| 996 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 997 | * Returns %0 if successful, !0 otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | */ |
| 999 | static int slot_remove(struct pci_func * old_slot) |
| 1000 | { |
| 1001 | struct pci_func *next; |
| 1002 | |
| 1003 | if (old_slot == NULL) |
| 1004 | return 1; |
| 1005 | |
| 1006 | next = cpqhp_slot_list[old_slot->bus]; |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1007 | if (next == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | |
| 1010 | if (next == old_slot) { |
| 1011 | cpqhp_slot_list[old_slot->bus] = old_slot->next; |
| 1012 | cpqhp_destroy_board_resources(old_slot); |
| 1013 | kfree(old_slot); |
| 1014 | return 0; |
| 1015 | } |
| 1016 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1017 | while ((next->next != old_slot) && (next->next != NULL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | next = next->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
| 1020 | if (next->next == old_slot) { |
| 1021 | next->next = old_slot->next; |
| 1022 | cpqhp_destroy_board_resources(old_slot); |
| 1023 | kfree(old_slot); |
| 1024 | return 0; |
| 1025 | } else |
| 1026 | return 2; |
| 1027 | } |
| 1028 | |
| 1029 | |
| 1030 | /** |
| 1031 | * bridge_slot_remove - Removes a node from the linked list of slots. |
| 1032 | * @bridge: bridge to remove |
| 1033 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1034 | * Returns %0 if successful, !0 otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | */ |
| 1036 | static int bridge_slot_remove(struct pci_func *bridge) |
| 1037 | { |
| 1038 | u8 subordinateBus, secondaryBus; |
| 1039 | u8 tempBus; |
| 1040 | struct pci_func *next; |
| 1041 | |
| 1042 | secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF; |
| 1043 | subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF; |
| 1044 | |
| 1045 | for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) { |
| 1046 | next = cpqhp_slot_list[tempBus]; |
| 1047 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1048 | while (!slot_remove(next)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | next = cpqhp_slot_list[tempBus]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | next = cpqhp_slot_list[bridge->bus]; |
| 1053 | |
| 1054 | if (next == NULL) |
| 1055 | return 1; |
| 1056 | |
| 1057 | if (next == bridge) { |
| 1058 | cpqhp_slot_list[bridge->bus] = bridge->next; |
| 1059 | goto out; |
| 1060 | } |
| 1061 | |
| 1062 | while ((next->next != bridge) && (next->next != NULL)) |
| 1063 | next = next->next; |
| 1064 | |
| 1065 | if (next->next != bridge) |
| 1066 | return 2; |
| 1067 | next->next = bridge->next; |
| 1068 | out: |
| 1069 | kfree(bridge); |
| 1070 | return 0; |
| 1071 | } |
| 1072 | |
| 1073 | |
| 1074 | /** |
| 1075 | * cpqhp_slot_find - Looks for a node by bus, and device, multiple functions accessed |
| 1076 | * @bus: bus to find |
| 1077 | * @device: device to find |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1078 | * @index: is %0 for first function found, %1 for the second... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | * |
| 1080 | * Returns pointer to the node if successful, %NULL otherwise. |
| 1081 | */ |
| 1082 | struct pci_func *cpqhp_slot_find(u8 bus, u8 device, u8 index) |
| 1083 | { |
| 1084 | int found = -1; |
| 1085 | struct pci_func *func; |
| 1086 | |
| 1087 | func = cpqhp_slot_list[bus]; |
| 1088 | |
| 1089 | if ((func == NULL) || ((func->device == device) && (index == 0))) |
| 1090 | return func; |
| 1091 | |
| 1092 | if (func->device == device) |
| 1093 | found++; |
| 1094 | |
| 1095 | while (func->next != NULL) { |
| 1096 | func = func->next; |
| 1097 | |
| 1098 | if (func->device == device) |
| 1099 | found++; |
| 1100 | |
| 1101 | if (found == index) |
| 1102 | return func; |
| 1103 | } |
| 1104 | |
| 1105 | return NULL; |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | /* DJZ: I don't think is_bridge will work as is. |
| 1110 | * FIXME */ |
| 1111 | static int is_bridge(struct pci_func * func) |
| 1112 | { |
| 1113 | /* Check the header type */ |
| 1114 | if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01) |
| 1115 | return 1; |
| 1116 | else |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | |
| 1121 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1122 | * set_controller_speed - set the frequency and/or mode of a specific controller segment. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | * @ctrl: controller to change frequency/mode for. |
| 1124 | * @adapter_speed: the speed of the adapter we want to match. |
| 1125 | * @hp_slot: the slot number where the adapter is installed. |
| 1126 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1127 | * Returns %0 if we successfully change frequency and/or mode to match the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | * adapter speed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | */ |
| 1130 | static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_slot) |
| 1131 | { |
| 1132 | struct slot *slot; |
| 1133 | u8 reg; |
| 1134 | u8 slot_power = readb(ctrl->hpc_reg + SLOT_POWER); |
| 1135 | u16 reg16; |
| 1136 | u32 leds = readl(ctrl->hpc_reg + LED_CONTROL); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | if (ctrl->speed == adapter_speed) |
| 1139 | return 0; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | /* We don't allow freq/mode changes if we find another adapter running |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1142 | * in another slot on this controller |
| 1143 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | for(slot = ctrl->slot; slot; slot = slot->next) { |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1145 | if (slot->device == (hp_slot + ctrl->slot_device_offset)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | continue; |
Julia Lawall | 05a34f5 | 2008-10-22 16:44:00 -0700 | [diff] [blame] | 1147 | if (!slot->hotplug_slot || !slot->hotplug_slot->info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | continue; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1149 | if (slot->hotplug_slot->info->adapter_status == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | continue; |
| 1151 | /* If another adapter is running on the same segment but at a |
| 1152 | * lower speed/mode, we allow the new adapter to function at |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1153 | * this rate if supported |
| 1154 | */ |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1155 | if (ctrl->speed < adapter_speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | return 0; |
| 1157 | |
| 1158 | return 1; |
| 1159 | } |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | /* If the controller doesn't support freq/mode changes and the |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1162 | * controller is running at a higher mode, we bail |
| 1163 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability)) |
| 1165 | return 1; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | /* But we allow the adapter to run at a lower rate if possible */ |
| 1168 | if ((ctrl->speed < adapter_speed) && (!ctrl->pcix_speed_capability)) |
| 1169 | return 0; |
| 1170 | |
| 1171 | /* We try to set the max speed supported by both the adapter and |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1172 | * controller |
| 1173 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | if (ctrl->speed_capability < adapter_speed) { |
| 1175 | if (ctrl->speed == ctrl->speed_capability) |
| 1176 | return 0; |
| 1177 | adapter_speed = ctrl->speed_capability; |
| 1178 | } |
| 1179 | |
| 1180 | writel(0x0L, ctrl->hpc_reg + LED_CONTROL); |
| 1181 | writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1182 | |
| 1183 | set_SOGO(ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | wait_for_ctrl_irq(ctrl); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | if (adapter_speed != PCI_SPEED_133MHz_PCIX) |
| 1187 | reg = 0xF5; |
| 1188 | else |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1189 | reg = 0xF4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | pci_write_config_byte(ctrl->pci_dev, 0x41, reg); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | reg16 = readw(ctrl->hpc_reg + NEXT_CURR_FREQ); |
| 1193 | reg16 &= ~0x000F; |
| 1194 | switch(adapter_speed) { |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1195 | case(PCI_SPEED_133MHz_PCIX): |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | reg = 0x75; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1197 | reg16 |= 0xB; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | break; |
| 1199 | case(PCI_SPEED_100MHz_PCIX): |
| 1200 | reg = 0x74; |
| 1201 | reg16 |= 0xA; |
| 1202 | break; |
| 1203 | case(PCI_SPEED_66MHz_PCIX): |
| 1204 | reg = 0x73; |
| 1205 | reg16 |= 0x9; |
| 1206 | break; |
| 1207 | case(PCI_SPEED_66MHz): |
| 1208 | reg = 0x73; |
| 1209 | reg16 |= 0x1; |
| 1210 | break; |
| 1211 | default: /* 33MHz PCI 2.2 */ |
| 1212 | reg = 0x71; |
| 1213 | break; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | } |
| 1216 | reg16 |= 0xB << 12; |
| 1217 | writew(reg16, ctrl->hpc_reg + NEXT_CURR_FREQ); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1218 | |
| 1219 | mdelay(5); |
| 1220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | /* Reenable interrupts */ |
| 1222 | writel(0, ctrl->hpc_reg + INT_MASK); |
| 1223 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1224 | pci_write_config_byte(ctrl->pci_dev, 0x41, reg); |
| 1225 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | /* Restart state machine */ |
| 1227 | reg = ~0xF; |
| 1228 | pci_read_config_byte(ctrl->pci_dev, 0x43, ®); |
| 1229 | pci_write_config_byte(ctrl->pci_dev, 0x43, reg); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1230 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | /* Only if mode change...*/ |
| 1232 | if (((ctrl->speed == PCI_SPEED_66MHz) && (adapter_speed == PCI_SPEED_66MHz_PCIX)) || |
| 1233 | ((ctrl->speed == PCI_SPEED_66MHz_PCIX) && (adapter_speed == PCI_SPEED_66MHz))) |
| 1234 | set_SOGO(ctrl); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | wait_for_ctrl_irq(ctrl); |
| 1237 | mdelay(1100); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | /* Restore LED/Slot state */ |
| 1240 | writel(leds, ctrl->hpc_reg + LED_CONTROL); |
| 1241 | writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | set_SOGO(ctrl); |
| 1244 | wait_for_ctrl_irq(ctrl); |
| 1245 | |
| 1246 | ctrl->speed = adapter_speed; |
| 1247 | slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 1248 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1249 | info("Successfully changed frequency/mode for adapter in slot %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | slot->number); |
| 1251 | return 0; |
| 1252 | } |
| 1253 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1254 | /* the following routines constitute the bulk of the |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1255 | * hotplug controller logic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | */ |
| 1257 | |
| 1258 | |
| 1259 | /** |
| 1260 | * board_replaced - Called after a board has been replaced in the system. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1261 | * @func: PCI device/function information |
| 1262 | * @ctrl: hotplug controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1264 | * This is only used if we don't have resources for hot add. |
| 1265 | * Turns power on for the board. |
| 1266 | * Checks to see if board is the same. |
| 1267 | * If board is same, reconfigures it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | * If board isn't same, turns it back off. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | */ |
| 1270 | static u32 board_replaced(struct pci_func *func, struct controller *ctrl) |
| 1271 | { |
| 1272 | u8 hp_slot; |
| 1273 | u8 temp_byte; |
| 1274 | u8 adapter_speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | u32 rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | |
| 1277 | hp_slot = func->device - ctrl->slot_device_offset; |
| 1278 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1279 | /* |
| 1280 | * The switch is open. |
| 1281 | */ |
| 1282 | if (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | rc = INTERLOCK_OPEN; |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1284 | /* |
| 1285 | * The board is already on |
| 1286 | */ |
| 1287 | else if (is_slot_enabled (ctrl, hp_slot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | rc = CARD_FUNCTIONING; |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1289 | else { |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1290 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | |
| 1292 | /* turn on board without attaching to the bus */ |
| 1293 | enable_slot_power (ctrl, hp_slot); |
| 1294 | |
| 1295 | set_SOGO(ctrl); |
| 1296 | |
| 1297 | /* Wait for SOBS to be unset */ |
| 1298 | wait_for_ctrl_irq (ctrl); |
| 1299 | |
| 1300 | /* Change bits in slot power register to force another shift out |
| 1301 | * NOTE: this is to work around the timer bug */ |
| 1302 | temp_byte = readb(ctrl->hpc_reg + SLOT_POWER); |
| 1303 | writeb(0x00, ctrl->hpc_reg + SLOT_POWER); |
| 1304 | writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER); |
| 1305 | |
| 1306 | set_SOGO(ctrl); |
| 1307 | |
| 1308 | /* Wait for SOBS to be unset */ |
| 1309 | wait_for_ctrl_irq (ctrl); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | adapter_speed = get_adapter_speed(ctrl, hp_slot); |
| 1312 | if (ctrl->speed != adapter_speed) |
| 1313 | if (set_controller_speed(ctrl, adapter_speed, hp_slot)) |
| 1314 | rc = WRONG_BUS_FREQUENCY; |
| 1315 | |
| 1316 | /* turn off board without attaching to the bus */ |
| 1317 | disable_slot_power (ctrl, hp_slot); |
| 1318 | |
| 1319 | set_SOGO(ctrl); |
| 1320 | |
| 1321 | /* Wait for SOBS to be unset */ |
| 1322 | wait_for_ctrl_irq (ctrl); |
| 1323 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1324 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | |
| 1326 | if (rc) |
| 1327 | return rc; |
| 1328 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1329 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | |
| 1331 | slot_enable (ctrl, hp_slot); |
| 1332 | green_LED_blink (ctrl, hp_slot); |
| 1333 | |
| 1334 | amber_LED_off (ctrl, hp_slot); |
| 1335 | |
| 1336 | set_SOGO(ctrl); |
| 1337 | |
| 1338 | /* Wait for SOBS to be unset */ |
| 1339 | wait_for_ctrl_irq (ctrl); |
| 1340 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1341 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | |
| 1343 | /* Wait for ~1 second because of hot plug spec */ |
| 1344 | long_delay(1*HZ); |
| 1345 | |
| 1346 | /* Check for a power fault */ |
| 1347 | if (func->status == 0xFF) { |
| 1348 | /* power fault occurred, but it was benign */ |
| 1349 | rc = POWER_FAILURE; |
| 1350 | func->status = 0; |
| 1351 | } else |
| 1352 | rc = cpqhp_valid_replace(ctrl, func); |
| 1353 | |
| 1354 | if (!rc) { |
| 1355 | /* It must be the same board */ |
| 1356 | |
| 1357 | rc = cpqhp_configure_board(ctrl, func); |
| 1358 | |
Adrian Bunk | 1305e91 | 2006-02-26 22:16:51 +0100 | [diff] [blame] | 1359 | /* If configuration fails, turn it off |
| 1360 | * Get slot won't work for devices behind |
| 1361 | * bridges, but in this case it will always be |
| 1362 | * called for the "base" bus/dev/func of an |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1363 | * adapter. |
| 1364 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1366 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
Adrian Bunk | 1305e91 | 2006-02-26 22:16:51 +0100 | [diff] [blame] | 1368 | amber_LED_on (ctrl, hp_slot); |
| 1369 | green_LED_off (ctrl, hp_slot); |
| 1370 | slot_disable (ctrl, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | |
| 1372 | set_SOGO(ctrl); |
| 1373 | |
| 1374 | /* Wait for SOBS to be unset */ |
| 1375 | wait_for_ctrl_irq (ctrl); |
| 1376 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1377 | mutex_unlock(&ctrl->crit_sect); |
Adrian Bunk | 1305e91 | 2006-02-26 22:16:51 +0100 | [diff] [blame] | 1378 | |
| 1379 | if (rc) |
| 1380 | return rc; |
| 1381 | else |
| 1382 | return 1; |
| 1383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1384 | } else { |
| 1385 | /* Something is wrong |
| 1386 | |
| 1387 | * Get slot won't work for devices behind bridges, but |
| 1388 | * in this case it will always be called for the "base" |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1389 | * bus/dev/func of an adapter. |
| 1390 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1392 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | |
| 1394 | amber_LED_on (ctrl, hp_slot); |
| 1395 | green_LED_off (ctrl, hp_slot); |
| 1396 | slot_disable (ctrl, hp_slot); |
| 1397 | |
| 1398 | set_SOGO(ctrl); |
| 1399 | |
| 1400 | /* Wait for SOBS to be unset */ |
| 1401 | wait_for_ctrl_irq (ctrl); |
| 1402 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1403 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | } |
| 1405 | |
| 1406 | } |
| 1407 | return rc; |
| 1408 | |
| 1409 | } |
| 1410 | |
| 1411 | |
| 1412 | /** |
| 1413 | * board_added - Called after a board has been added to the system. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1414 | * @func: PCI device/function info |
| 1415 | * @ctrl: hotplug controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1417 | * Turns power on for the board. |
| 1418 | * Configures board. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | */ |
| 1420 | static u32 board_added(struct pci_func *func, struct controller *ctrl) |
| 1421 | { |
| 1422 | u8 hp_slot; |
| 1423 | u8 temp_byte; |
| 1424 | u8 adapter_speed; |
| 1425 | int index; |
| 1426 | u32 temp_register = 0xFFFFFFFF; |
| 1427 | u32 rc = 0; |
| 1428 | struct pci_func *new_slot = NULL; |
| 1429 | struct slot *p_slot; |
| 1430 | struct resource_lists res_lists; |
| 1431 | |
| 1432 | hp_slot = func->device - ctrl->slot_device_offset; |
| 1433 | dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n", |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1434 | __func__, func->device, ctrl->slot_device_offset, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1436 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | |
| 1438 | /* turn on board without attaching to the bus */ |
| 1439 | enable_slot_power(ctrl, hp_slot); |
| 1440 | |
| 1441 | set_SOGO(ctrl); |
| 1442 | |
| 1443 | /* Wait for SOBS to be unset */ |
| 1444 | wait_for_ctrl_irq (ctrl); |
| 1445 | |
| 1446 | /* Change bits in slot power register to force another shift out |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1447 | * NOTE: this is to work around the timer bug |
| 1448 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | temp_byte = readb(ctrl->hpc_reg + SLOT_POWER); |
| 1450 | writeb(0x00, ctrl->hpc_reg + SLOT_POWER); |
| 1451 | writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER); |
| 1452 | |
| 1453 | set_SOGO(ctrl); |
| 1454 | |
| 1455 | /* Wait for SOBS to be unset */ |
| 1456 | wait_for_ctrl_irq (ctrl); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | adapter_speed = get_adapter_speed(ctrl, hp_slot); |
| 1459 | if (ctrl->speed != adapter_speed) |
| 1460 | if (set_controller_speed(ctrl, adapter_speed, hp_slot)) |
| 1461 | rc = WRONG_BUS_FREQUENCY; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1462 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | /* turn off board without attaching to the bus */ |
| 1464 | disable_slot_power (ctrl, hp_slot); |
| 1465 | |
| 1466 | set_SOGO(ctrl); |
| 1467 | |
| 1468 | /* Wait for SOBS to be unset */ |
| 1469 | wait_for_ctrl_irq(ctrl); |
| 1470 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1471 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | |
| 1473 | if (rc) |
| 1474 | return rc; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 1477 | |
| 1478 | /* turn on board and blink green LED */ |
| 1479 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1480 | dbg("%s: before down\n", __func__); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1481 | mutex_lock(&ctrl->crit_sect); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1482 | dbg("%s: after down\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1484 | dbg("%s: before slot_enable\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | slot_enable (ctrl, hp_slot); |
| 1486 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1487 | dbg("%s: before green_LED_blink\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | green_LED_blink (ctrl, hp_slot); |
| 1489 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1490 | dbg("%s: before amber_LED_blink\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | amber_LED_off (ctrl, hp_slot); |
| 1492 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1493 | dbg("%s: before set_SOGO\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | set_SOGO(ctrl); |
| 1495 | |
| 1496 | /* Wait for SOBS to be unset */ |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1497 | dbg("%s: before wait_for_ctrl_irq\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | wait_for_ctrl_irq (ctrl); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1499 | dbg("%s: after wait_for_ctrl_irq\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1501 | dbg("%s: before up\n", __func__); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1502 | mutex_unlock(&ctrl->crit_sect); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1503 | dbg("%s: after up\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | |
| 1505 | /* Wait for ~1 second because of hot plug spec */ |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1506 | dbg("%s: before long_delay\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | long_delay(1*HZ); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1508 | dbg("%s: after long_delay\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1510 | dbg("%s: func status = %x\n", __func__, func->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | /* Check for a power fault */ |
| 1512 | if (func->status == 0xFF) { |
| 1513 | /* power fault occurred, but it was benign */ |
| 1514 | temp_register = 0xFFFFFFFF; |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1515 | dbg("%s: temp register set to %x by power fault\n", __func__, temp_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | rc = POWER_FAILURE; |
| 1517 | func->status = 0; |
| 1518 | } else { |
| 1519 | /* Get vendor/device ID u32 */ |
| 1520 | ctrl->pci_bus->number = func->bus; |
| 1521 | rc = pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), PCI_VENDOR_ID, &temp_register); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1522 | dbg("%s: pci_read_config_dword returns %d\n", __func__, rc); |
| 1523 | dbg("%s: temp_register is %x\n", __func__, temp_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | |
| 1525 | if (rc != 0) { |
| 1526 | /* Something's wrong here */ |
| 1527 | temp_register = 0xFFFFFFFF; |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1528 | dbg("%s: temp register set to %x by error\n", __func__, temp_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | } |
| 1530 | /* Preset return code. It will be changed later if things go okay. */ |
| 1531 | rc = NO_ADAPTER_PRESENT; |
| 1532 | } |
| 1533 | |
| 1534 | /* All F's is an empty slot or an invalid board */ |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1535 | if (temp_register != 0xFFFFFFFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | res_lists.io_head = ctrl->io_head; |
| 1537 | res_lists.mem_head = ctrl->mem_head; |
| 1538 | res_lists.p_mem_head = ctrl->p_mem_head; |
| 1539 | res_lists.bus_head = ctrl->bus_head; |
| 1540 | res_lists.irqs = NULL; |
| 1541 | |
| 1542 | rc = configure_new_device(ctrl, func, 0, &res_lists); |
| 1543 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1544 | dbg("%s: back from configure_new_device\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | ctrl->io_head = res_lists.io_head; |
| 1546 | ctrl->mem_head = res_lists.mem_head; |
| 1547 | ctrl->p_mem_head = res_lists.p_mem_head; |
| 1548 | ctrl->bus_head = res_lists.bus_head; |
| 1549 | |
| 1550 | cpqhp_resource_sort_and_combine(&(ctrl->mem_head)); |
| 1551 | cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head)); |
| 1552 | cpqhp_resource_sort_and_combine(&(ctrl->io_head)); |
| 1553 | cpqhp_resource_sort_and_combine(&(ctrl->bus_head)); |
| 1554 | |
| 1555 | if (rc) { |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1556 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | |
| 1558 | amber_LED_on (ctrl, hp_slot); |
| 1559 | green_LED_off (ctrl, hp_slot); |
| 1560 | slot_disable (ctrl, hp_slot); |
| 1561 | |
| 1562 | set_SOGO(ctrl); |
| 1563 | |
| 1564 | /* Wait for SOBS to be unset */ |
| 1565 | wait_for_ctrl_irq (ctrl); |
| 1566 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1567 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | return rc; |
| 1569 | } else { |
| 1570 | cpqhp_save_slot_config(ctrl, func); |
| 1571 | } |
| 1572 | |
| 1573 | |
| 1574 | func->status = 0; |
| 1575 | func->switch_save = 0x10; |
| 1576 | func->is_a_board = 0x01; |
| 1577 | |
| 1578 | /* next, we will instantiate the linux pci_dev structures (with |
| 1579 | * appropriate driver notification, if already present) */ |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1580 | dbg("%s: configure linux pci_dev structure\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | index = 0; |
| 1582 | do { |
| 1583 | new_slot = cpqhp_slot_find(ctrl->bus, func->device, index++); |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 1584 | if (new_slot && !new_slot->pci_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | cpqhp_configure_device(ctrl, new_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | } while (new_slot); |
| 1587 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1588 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | |
| 1590 | green_LED_on (ctrl, hp_slot); |
| 1591 | |
| 1592 | set_SOGO(ctrl); |
| 1593 | |
| 1594 | /* Wait for SOBS to be unset */ |
| 1595 | wait_for_ctrl_irq (ctrl); |
| 1596 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1597 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | } else { |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1599 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | |
| 1601 | amber_LED_on (ctrl, hp_slot); |
| 1602 | green_LED_off (ctrl, hp_slot); |
| 1603 | slot_disable (ctrl, hp_slot); |
| 1604 | |
| 1605 | set_SOGO(ctrl); |
| 1606 | |
| 1607 | /* Wait for SOBS to be unset */ |
| 1608 | wait_for_ctrl_irq (ctrl); |
| 1609 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1610 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | |
| 1612 | return rc; |
| 1613 | } |
| 1614 | return 0; |
| 1615 | } |
| 1616 | |
| 1617 | |
| 1618 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1619 | * remove_board - Turns off slot and LEDs |
| 1620 | * @func: PCI device/function info |
| 1621 | * @replace_flag: whether replacing or adding a new device |
| 1622 | * @ctrl: target controller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | */ |
| 1624 | static u32 remove_board(struct pci_func * func, u32 replace_flag, struct controller * ctrl) |
| 1625 | { |
| 1626 | int index; |
| 1627 | u8 skip = 0; |
| 1628 | u8 device; |
| 1629 | u8 hp_slot; |
| 1630 | u8 temp_byte; |
| 1631 | u32 rc; |
| 1632 | struct resource_lists res_lists; |
| 1633 | struct pci_func *temp_func; |
| 1634 | |
| 1635 | if (cpqhp_unconfigure_device(func)) |
| 1636 | return 1; |
| 1637 | |
| 1638 | device = func->device; |
| 1639 | |
| 1640 | hp_slot = func->device - ctrl->slot_device_offset; |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1641 | dbg("In %s, hp_slot = %d\n", __func__, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | |
| 1643 | /* When we get here, it is safe to change base address registers. |
| 1644 | * We will attempt to save the base address register lengths */ |
| 1645 | if (replace_flag || !ctrl->add_support) |
| 1646 | rc = cpqhp_save_base_addr_length(ctrl, func); |
| 1647 | else if (!func->bus_head && !func->mem_head && |
| 1648 | !func->p_mem_head && !func->io_head) { |
| 1649 | /* Here we check to see if we've saved any of the board's |
| 1650 | * resources already. If so, we'll skip the attempt to |
| 1651 | * determine what's being used. */ |
| 1652 | index = 0; |
| 1653 | temp_func = cpqhp_slot_find(func->bus, func->device, index++); |
| 1654 | while (temp_func) { |
| 1655 | if (temp_func->bus_head || temp_func->mem_head |
| 1656 | || temp_func->p_mem_head || temp_func->io_head) { |
| 1657 | skip = 1; |
| 1658 | break; |
| 1659 | } |
| 1660 | temp_func = cpqhp_slot_find(temp_func->bus, temp_func->device, index++); |
| 1661 | } |
| 1662 | |
| 1663 | if (!skip) |
| 1664 | rc = cpqhp_save_used_resources(ctrl, func); |
| 1665 | } |
| 1666 | /* Change status to shutdown */ |
| 1667 | if (func->is_a_board) |
| 1668 | func->status = 0x01; |
| 1669 | func->configured = 0; |
| 1670 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1671 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | |
| 1673 | green_LED_off (ctrl, hp_slot); |
| 1674 | slot_disable (ctrl, hp_slot); |
| 1675 | |
| 1676 | set_SOGO(ctrl); |
| 1677 | |
| 1678 | /* turn off SERR for slot */ |
| 1679 | temp_byte = readb(ctrl->hpc_reg + SLOT_SERR); |
| 1680 | temp_byte &= ~(0x01 << hp_slot); |
| 1681 | writeb(temp_byte, ctrl->hpc_reg + SLOT_SERR); |
| 1682 | |
| 1683 | /* Wait for SOBS to be unset */ |
| 1684 | wait_for_ctrl_irq (ctrl); |
| 1685 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1686 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | |
| 1688 | if (!replace_flag && ctrl->add_support) { |
| 1689 | while (func) { |
| 1690 | res_lists.io_head = ctrl->io_head; |
| 1691 | res_lists.mem_head = ctrl->mem_head; |
| 1692 | res_lists.p_mem_head = ctrl->p_mem_head; |
| 1693 | res_lists.bus_head = ctrl->bus_head; |
| 1694 | |
| 1695 | cpqhp_return_board_resources(func, &res_lists); |
| 1696 | |
| 1697 | ctrl->io_head = res_lists.io_head; |
| 1698 | ctrl->mem_head = res_lists.mem_head; |
| 1699 | ctrl->p_mem_head = res_lists.p_mem_head; |
| 1700 | ctrl->bus_head = res_lists.bus_head; |
| 1701 | |
| 1702 | cpqhp_resource_sort_and_combine(&(ctrl->mem_head)); |
| 1703 | cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head)); |
| 1704 | cpqhp_resource_sort_and_combine(&(ctrl->io_head)); |
| 1705 | cpqhp_resource_sort_and_combine(&(ctrl->bus_head)); |
| 1706 | |
| 1707 | if (is_bridge(func)) { |
| 1708 | bridge_slot_remove(func); |
| 1709 | } else |
| 1710 | slot_remove(func); |
| 1711 | |
| 1712 | func = cpqhp_slot_find(ctrl->bus, device, 0); |
| 1713 | } |
| 1714 | |
| 1715 | /* Setup slot structure with entry for empty slot */ |
| 1716 | func = cpqhp_slot_create(ctrl->bus); |
| 1717 | |
| 1718 | if (func == NULL) |
| 1719 | return 1; |
| 1720 | |
| 1721 | func->bus = ctrl->bus; |
| 1722 | func->device = device; |
| 1723 | func->function = 0; |
| 1724 | func->configured = 0; |
| 1725 | func->switch_save = 0x10; |
| 1726 | func->is_a_board = 0; |
| 1727 | func->p_task_event = NULL; |
| 1728 | } |
| 1729 | |
| 1730 | return 0; |
| 1731 | } |
| 1732 | |
| 1733 | static void pushbutton_helper_thread(unsigned long data) |
| 1734 | { |
| 1735 | pushbutton_pending = data; |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 1736 | wake_up_process(cpqhp_event_thread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | } |
| 1738 | |
| 1739 | |
| 1740 | /* this is the main worker thread */ |
| 1741 | static int event_thread(void* data) |
| 1742 | { |
| 1743 | struct controller *ctrl; |
Ingo Molnar | 60ac8f2 | 2007-07-24 11:16:37 +0200 | [diff] [blame] | 1744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | while (1) { |
| 1746 | dbg("!!!!event_thread sleeping\n"); |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 1747 | set_current_state(TASK_INTERRUPTIBLE); |
| 1748 | schedule(); |
| 1749 | |
| 1750 | if (kthread_should_stop()) |
| 1751 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | /* Do stuff here */ |
| 1753 | if (pushbutton_pending) |
| 1754 | cpqhp_pushbutton_thread(pushbutton_pending); |
| 1755 | else |
| 1756 | for (ctrl = cpqhp_ctrl_list; ctrl; ctrl=ctrl->next) |
| 1757 | interrupt_event_handler(ctrl); |
| 1758 | } |
| 1759 | dbg("event_thread signals exit\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | return 0; |
| 1761 | } |
| 1762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | int cpqhp_event_start_thread(void) |
| 1764 | { |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 1765 | cpqhp_event_thread = kthread_run(event_thread, NULL, "phpd_event"); |
| 1766 | if (IS_ERR(cpqhp_event_thread)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | err ("Can't start up our event thread\n"); |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 1768 | return PTR_ERR(cpqhp_event_thread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | } |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 1770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | return 0; |
| 1772 | } |
| 1773 | |
| 1774 | |
| 1775 | void cpqhp_event_stop_thread(void) |
| 1776 | { |
Christoph Hellwig | fa007d8 | 2007-08-14 16:17:15 -0700 | [diff] [blame] | 1777 | kthread_stop(cpqhp_event_thread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | } |
| 1779 | |
| 1780 | |
| 1781 | static int update_slot_info(struct controller *ctrl, struct slot *slot) |
| 1782 | { |
| 1783 | struct hotplug_slot_info *info; |
| 1784 | int result; |
| 1785 | |
| 1786 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1787 | if (!info) |
| 1788 | return -ENOMEM; |
| 1789 | |
| 1790 | info->power_status = get_slot_enabled(ctrl, slot); |
| 1791 | info->attention_status = cpq_get_attention_status(ctrl, slot); |
| 1792 | info->latch_status = cpq_get_latch_status(ctrl, slot); |
| 1793 | info->adapter_status = get_presence_status(ctrl, slot); |
| 1794 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
| 1795 | kfree (info); |
| 1796 | return result; |
| 1797 | } |
| 1798 | |
| 1799 | static void interrupt_event_handler(struct controller *ctrl) |
| 1800 | { |
| 1801 | int loop = 0; |
| 1802 | int change = 1; |
| 1803 | struct pci_func *func; |
| 1804 | u8 hp_slot; |
| 1805 | struct slot *p_slot; |
| 1806 | |
| 1807 | while (change) { |
| 1808 | change = 0; |
| 1809 | |
| 1810 | for (loop = 0; loop < 10; loop++) { |
| 1811 | /* dbg("loop %d\n", loop); */ |
| 1812 | if (ctrl->event_queue[loop].event_type != 0) { |
| 1813 | hp_slot = ctrl->event_queue[loop].hp_slot; |
| 1814 | |
| 1815 | func = cpqhp_slot_find(ctrl->bus, (hp_slot + ctrl->slot_device_offset), 0); |
| 1816 | if (!func) |
| 1817 | return; |
| 1818 | |
| 1819 | p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 1820 | if (!p_slot) |
| 1821 | return; |
| 1822 | |
| 1823 | dbg("hp_slot %d, func %p, p_slot %p\n", |
| 1824 | hp_slot, func, p_slot); |
| 1825 | |
| 1826 | if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { |
| 1827 | dbg("button pressed\n"); |
| 1828 | } else if (ctrl->event_queue[loop].event_type == |
| 1829 | INT_BUTTON_CANCEL) { |
| 1830 | dbg("button cancel\n"); |
| 1831 | del_timer(&p_slot->task_event); |
| 1832 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1833 | mutex_lock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | |
| 1835 | if (p_slot->state == BLINKINGOFF_STATE) { |
| 1836 | /* slot is on */ |
| 1837 | dbg("turn on green LED\n"); |
| 1838 | green_LED_on (ctrl, hp_slot); |
| 1839 | } else if (p_slot->state == BLINKINGON_STATE) { |
| 1840 | /* slot is off */ |
| 1841 | dbg("turn off green LED\n"); |
| 1842 | green_LED_off (ctrl, hp_slot); |
| 1843 | } |
| 1844 | |
| 1845 | info(msg_button_cancel, p_slot->number); |
| 1846 | |
| 1847 | p_slot->state = STATIC_STATE; |
| 1848 | |
| 1849 | amber_LED_off (ctrl, hp_slot); |
| 1850 | |
| 1851 | set_SOGO(ctrl); |
| 1852 | |
| 1853 | /* Wait for SOBS to be unset */ |
| 1854 | wait_for_ctrl_irq (ctrl); |
| 1855 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1856 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | } |
| 1858 | /*** button Released (No action on press...) */ |
| 1859 | else if (ctrl->event_queue[loop].event_type == INT_BUTTON_RELEASE) { |
| 1860 | dbg("button release\n"); |
| 1861 | |
| 1862 | if (is_slot_enabled (ctrl, hp_slot)) { |
| 1863 | dbg("slot is on\n"); |
| 1864 | p_slot->state = BLINKINGOFF_STATE; |
| 1865 | info(msg_button_off, p_slot->number); |
| 1866 | } else { |
| 1867 | dbg("slot is off\n"); |
| 1868 | p_slot->state = BLINKINGON_STATE; |
| 1869 | info(msg_button_on, p_slot->number); |
| 1870 | } |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1871 | mutex_lock(&ctrl->crit_sect); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1872 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | dbg("blink green LED and turn off amber\n"); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | amber_LED_off (ctrl, hp_slot); |
| 1876 | green_LED_blink (ctrl, hp_slot); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1877 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | set_SOGO(ctrl); |
| 1879 | |
| 1880 | /* Wait for SOBS to be unset */ |
| 1881 | wait_for_ctrl_irq (ctrl); |
| 1882 | |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 1883 | mutex_unlock(&ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | init_timer(&p_slot->task_event); |
| 1885 | p_slot->hp_slot = hp_slot; |
| 1886 | p_slot->ctrl = ctrl; |
| 1887 | /* p_slot->physical_slot = physical_slot; */ |
| 1888 | p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ |
| 1889 | p_slot->task_event.function = pushbutton_helper_thread; |
| 1890 | p_slot->task_event.data = (u32) p_slot; |
| 1891 | |
| 1892 | dbg("add_timer p_slot = %p\n", p_slot); |
| 1893 | add_timer(&p_slot->task_event); |
| 1894 | } |
| 1895 | /***********POWER FAULT */ |
| 1896 | else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { |
| 1897 | dbg("power fault\n"); |
| 1898 | } else { |
| 1899 | /* refresh notification */ |
| 1900 | if (p_slot) |
| 1901 | update_slot_info(ctrl, p_slot); |
| 1902 | } |
| 1903 | |
| 1904 | ctrl->event_queue[loop].event_type = 0; |
| 1905 | |
| 1906 | change = 1; |
| 1907 | } |
| 1908 | } /* End of FOR loop */ |
| 1909 | } |
| 1910 | |
| 1911 | return; |
| 1912 | } |
| 1913 | |
| 1914 | |
| 1915 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1916 | * cpqhp_pushbutton_thread - handle pushbutton events |
| 1917 | * @slot: target slot (struct) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 1919 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | * Handles all pending events and exits. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | */ |
| 1922 | void cpqhp_pushbutton_thread(unsigned long slot) |
| 1923 | { |
| 1924 | u8 hp_slot; |
| 1925 | u8 device; |
| 1926 | struct pci_func *func; |
| 1927 | struct slot *p_slot = (struct slot *) slot; |
| 1928 | struct controller *ctrl = (struct controller *) p_slot->ctrl; |
| 1929 | |
| 1930 | pushbutton_pending = 0; |
| 1931 | hp_slot = p_slot->hp_slot; |
| 1932 | |
| 1933 | device = p_slot->device; |
| 1934 | |
| 1935 | if (is_slot_enabled(ctrl, hp_slot)) { |
| 1936 | p_slot->state = POWEROFF_STATE; |
| 1937 | /* power Down board */ |
| 1938 | func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0); |
| 1939 | dbg("In power_down_board, func = %p, ctrl = %p\n", func, ctrl); |
| 1940 | if (!func) { |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1941 | dbg("Error! func NULL in %s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | return ; |
| 1943 | } |
| 1944 | |
Adrian Bunk | 0039541 | 2007-10-24 18:25:00 +0200 | [diff] [blame] | 1945 | if (cpqhp_process_SS(ctrl, func) != 0) { |
| 1946 | amber_LED_on(ctrl, hp_slot); |
| 1947 | green_LED_on(ctrl, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | |
Adrian Bunk | 0039541 | 2007-10-24 18:25:00 +0200 | [diff] [blame] | 1949 | set_SOGO(ctrl); |
| 1950 | |
| 1951 | /* Wait for SOBS to be unset */ |
| 1952 | wait_for_ctrl_irq(ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | } |
| 1954 | |
| 1955 | p_slot->state = STATIC_STATE; |
| 1956 | } else { |
| 1957 | p_slot->state = POWERON_STATE; |
| 1958 | /* slot is off */ |
| 1959 | |
| 1960 | func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0); |
| 1961 | dbg("In add_board, func = %p, ctrl = %p\n", func, ctrl); |
| 1962 | if (!func) { |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1963 | dbg("Error! func NULL in %s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | return ; |
| 1965 | } |
| 1966 | |
Julia Lawall | b8d9cb2 | 2008-12-21 16:39:37 +0100 | [diff] [blame] | 1967 | if (ctrl != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | if (cpqhp_process_SI(ctrl, func) != 0) { |
| 1969 | amber_LED_on(ctrl, hp_slot); |
| 1970 | green_LED_off(ctrl, hp_slot); |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1971 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | set_SOGO(ctrl); |
| 1973 | |
| 1974 | /* Wait for SOBS to be unset */ |
| 1975 | wait_for_ctrl_irq (ctrl); |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | p_slot->state = STATIC_STATE; |
| 1980 | } |
| 1981 | |
| 1982 | return; |
| 1983 | } |
| 1984 | |
| 1985 | |
| 1986 | int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func) |
| 1987 | { |
| 1988 | u8 device, hp_slot; |
| 1989 | u16 temp_word; |
| 1990 | u32 tempdword; |
| 1991 | int rc; |
| 1992 | struct slot* p_slot; |
| 1993 | int physical_slot = 0; |
| 1994 | |
| 1995 | tempdword = 0; |
| 1996 | |
| 1997 | device = func->device; |
| 1998 | hp_slot = device - ctrl->slot_device_offset; |
| 1999 | p_slot = cpqhp_find_slot(ctrl, device); |
| 2000 | if (p_slot) |
| 2001 | physical_slot = p_slot->number; |
| 2002 | |
| 2003 | /* Check to see if the interlock is closed */ |
| 2004 | tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 2005 | |
| 2006 | if (tempdword & (0x01 << hp_slot)) { |
| 2007 | return 1; |
| 2008 | } |
| 2009 | |
| 2010 | if (func->is_a_board) { |
| 2011 | rc = board_replaced(func, ctrl); |
| 2012 | } else { |
| 2013 | /* add board */ |
| 2014 | slot_remove(func); |
| 2015 | |
| 2016 | func = cpqhp_slot_create(ctrl->bus); |
| 2017 | if (func == NULL) |
| 2018 | return 1; |
| 2019 | |
| 2020 | func->bus = ctrl->bus; |
| 2021 | func->device = device; |
| 2022 | func->function = 0; |
| 2023 | func->configured = 0; |
| 2024 | func->is_a_board = 1; |
| 2025 | |
| 2026 | /* We have to save the presence info for these slots */ |
| 2027 | temp_word = ctrl->ctrl_int_comp >> 16; |
| 2028 | func->presence_save = (temp_word >> hp_slot) & 0x01; |
| 2029 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; |
| 2030 | |
| 2031 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { |
| 2032 | func->switch_save = 0; |
| 2033 | } else { |
| 2034 | func->switch_save = 0x10; |
| 2035 | } |
| 2036 | |
| 2037 | rc = board_added(func, ctrl); |
| 2038 | if (rc) { |
| 2039 | if (is_bridge(func)) { |
| 2040 | bridge_slot_remove(func); |
| 2041 | } else |
| 2042 | slot_remove(func); |
| 2043 | |
| 2044 | /* Setup slot structure with entry for empty slot */ |
| 2045 | func = cpqhp_slot_create(ctrl->bus); |
| 2046 | |
| 2047 | if (func == NULL) |
| 2048 | return 1; |
| 2049 | |
| 2050 | func->bus = ctrl->bus; |
| 2051 | func->device = device; |
| 2052 | func->function = 0; |
| 2053 | func->configured = 0; |
| 2054 | func->is_a_board = 0; |
| 2055 | |
| 2056 | /* We have to save the presence info for these slots */ |
| 2057 | temp_word = ctrl->ctrl_int_comp >> 16; |
| 2058 | func->presence_save = (temp_word >> hp_slot) & 0x01; |
| 2059 | func->presence_save |= |
| 2060 | (temp_word >> (hp_slot + 7)) & 0x02; |
| 2061 | |
| 2062 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { |
| 2063 | func->switch_save = 0; |
| 2064 | } else { |
| 2065 | func->switch_save = 0x10; |
| 2066 | } |
| 2067 | } |
| 2068 | } |
| 2069 | |
| 2070 | if (rc) { |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 2071 | dbg("%s: rc = %d\n", __func__, rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | } |
| 2073 | |
| 2074 | if (p_slot) |
| 2075 | update_slot_info(ctrl, p_slot); |
| 2076 | |
| 2077 | return rc; |
| 2078 | } |
| 2079 | |
| 2080 | |
| 2081 | int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func) |
| 2082 | { |
| 2083 | u8 device, class_code, header_type, BCR; |
| 2084 | u8 index = 0; |
| 2085 | u8 replace_flag; |
| 2086 | u32 rc = 0; |
| 2087 | unsigned int devfn; |
| 2088 | struct slot* p_slot; |
| 2089 | struct pci_bus *pci_bus = ctrl->pci_bus; |
| 2090 | int physical_slot=0; |
| 2091 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 2092 | device = func->device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | func = cpqhp_slot_find(ctrl->bus, device, index++); |
| 2094 | p_slot = cpqhp_find_slot(ctrl, device); |
| 2095 | if (p_slot) { |
| 2096 | physical_slot = p_slot->number; |
| 2097 | } |
| 2098 | |
| 2099 | /* Make sure there are no video controllers here */ |
| 2100 | while (func && !rc) { |
| 2101 | pci_bus->number = func->bus; |
| 2102 | devfn = PCI_DEVFN(func->device, func->function); |
| 2103 | |
| 2104 | /* Check the Class Code */ |
| 2105 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); |
| 2106 | if (rc) |
| 2107 | return rc; |
| 2108 | |
| 2109 | if (class_code == PCI_BASE_CLASS_DISPLAY) { |
| 2110 | /* Display/Video adapter (not supported) */ |
| 2111 | rc = REMOVE_NOT_SUPPORTED; |
| 2112 | } else { |
| 2113 | /* See if it's a bridge */ |
| 2114 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); |
| 2115 | if (rc) |
| 2116 | return rc; |
| 2117 | |
| 2118 | /* If it's a bridge, check the VGA Enable bit */ |
| 2119 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
| 2120 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR); |
| 2121 | if (rc) |
| 2122 | return rc; |
| 2123 | |
| 2124 | /* If the VGA Enable bit is set, remove isn't |
| 2125 | * supported */ |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2126 | if (BCR & PCI_BRIDGE_CTL_VGA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | rc = REMOVE_NOT_SUPPORTED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | } |
| 2129 | } |
| 2130 | |
| 2131 | func = cpqhp_slot_find(ctrl->bus, device, index++); |
| 2132 | } |
| 2133 | |
| 2134 | func = cpqhp_slot_find(ctrl->bus, device, 0); |
| 2135 | if ((func != NULL) && !rc) { |
| 2136 | /* FIXME: Replace flag should be passed into process_SS */ |
| 2137 | replace_flag = !(ctrl->add_support); |
| 2138 | rc = remove_board(func, replace_flag, ctrl); |
| 2139 | } else if (!rc) { |
| 2140 | rc = 1; |
| 2141 | } |
| 2142 | |
| 2143 | if (p_slot) |
| 2144 | update_slot_info(ctrl, p_slot); |
| 2145 | |
| 2146 | return rc; |
| 2147 | } |
| 2148 | |
| 2149 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 2150 | * switch_leds - switch the leds, go from one site to the other. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | * @ctrl: controller to use |
| 2152 | * @num_of_slots: number of slots to use |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 2153 | * @work_LED: LED control value |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2154 | * @direction: 1 to start from the left side, 0 to start right. |
| 2155 | */ |
| 2156 | static void switch_leds(struct controller *ctrl, const int num_of_slots, |
| 2157 | u32 *work_LED, const int direction) |
| 2158 | { |
| 2159 | int loop; |
| 2160 | |
| 2161 | for (loop = 0; loop < num_of_slots; loop++) { |
| 2162 | if (direction) |
| 2163 | *work_LED = *work_LED >> 1; |
| 2164 | else |
| 2165 | *work_LED = *work_LED << 1; |
| 2166 | writel(*work_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2167 | |
| 2168 | set_SOGO(ctrl); |
| 2169 | |
| 2170 | /* Wait for SOGO interrupt */ |
| 2171 | wait_for_ctrl_irq(ctrl); |
| 2172 | |
| 2173 | /* Get ready for next iteration */ |
| 2174 | long_delay((2*HZ)/10); |
| 2175 | } |
| 2176 | } |
| 2177 | |
| 2178 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 2179 | * cpqhp_hardware_test - runs hardware tests |
| 2180 | * @ctrl: target controller |
| 2181 | * @test_num: the number written to the "test" file in sysfs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2182 | * |
| 2183 | * For hot plug ctrl folks to play with. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | */ |
| 2185 | int cpqhp_hardware_test(struct controller *ctrl, int test_num) |
| 2186 | { |
| 2187 | u32 save_LED; |
| 2188 | u32 work_LED; |
| 2189 | int loop; |
| 2190 | int num_of_slots; |
| 2191 | |
| 2192 | num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0f; |
| 2193 | |
| 2194 | switch (test_num) { |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2195 | case 1: |
| 2196 | /* Do stuff here! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2198 | /* Do that funky LED thing */ |
| 2199 | /* so we can restore them later */ |
| 2200 | save_LED = readl(ctrl->hpc_reg + LED_CONTROL); |
| 2201 | work_LED = 0x01010101; |
| 2202 | switch_leds(ctrl, num_of_slots, &work_LED, 0); |
| 2203 | switch_leds(ctrl, num_of_slots, &work_LED, 1); |
| 2204 | switch_leds(ctrl, num_of_slots, &work_LED, 0); |
| 2205 | switch_leds(ctrl, num_of_slots, &work_LED, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2207 | work_LED = 0x01010000; |
| 2208 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2209 | switch_leds(ctrl, num_of_slots, &work_LED, 0); |
| 2210 | switch_leds(ctrl, num_of_slots, &work_LED, 1); |
| 2211 | work_LED = 0x00000101; |
| 2212 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2213 | switch_leds(ctrl, num_of_slots, &work_LED, 0); |
| 2214 | switch_leds(ctrl, num_of_slots, &work_LED, 1); |
| 2215 | |
| 2216 | work_LED = 0x01010000; |
| 2217 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2218 | for (loop = 0; loop < num_of_slots; loop++) { |
| 2219 | set_SOGO(ctrl); |
| 2220 | |
| 2221 | /* Wait for SOGO interrupt */ |
| 2222 | wait_for_ctrl_irq (ctrl); |
| 2223 | |
| 2224 | /* Get ready for next iteration */ |
| 2225 | long_delay((3*HZ)/10); |
| 2226 | work_LED = work_LED >> 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | |
| 2229 | set_SOGO(ctrl); |
| 2230 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2231 | /* Wait for SOGO interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | wait_for_ctrl_irq (ctrl); |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2233 | |
| 2234 | /* Get ready for next iteration */ |
| 2235 | long_delay((3*HZ)/10); |
| 2236 | work_LED = work_LED << 16; |
| 2237 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2238 | work_LED = work_LED << 1; |
| 2239 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2240 | } |
| 2241 | |
| 2242 | /* put it back the way it was */ |
| 2243 | writel(save_LED, ctrl->hpc_reg + LED_CONTROL); |
| 2244 | |
| 2245 | set_SOGO(ctrl); |
| 2246 | |
| 2247 | /* Wait for SOBS to be unset */ |
| 2248 | wait_for_ctrl_irq (ctrl); |
| 2249 | break; |
| 2250 | case 2: |
| 2251 | /* Do other stuff here! */ |
| 2252 | break; |
| 2253 | case 3: |
| 2254 | /* and more... */ |
| 2255 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | } |
| 2257 | return 0; |
| 2258 | } |
| 2259 | |
| 2260 | |
| 2261 | /** |
| 2262 | * configure_new_device - Configures the PCI header information of one board. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | * @ctrl: pointer to controller structure |
| 2264 | * @func: pointer to function structure |
| 2265 | * @behind_bridge: 1 if this is a recursive call, 0 if not |
| 2266 | * @resources: pointer to set of resource lists |
| 2267 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 2268 | * Returns 0 if success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | */ |
| 2270 | static u32 configure_new_device(struct controller * ctrl, struct pci_func * func, |
| 2271 | u8 behind_bridge, struct resource_lists * resources) |
| 2272 | { |
| 2273 | u8 temp_byte, function, max_functions, stop_it; |
| 2274 | int rc; |
| 2275 | u32 ID; |
| 2276 | struct pci_func *new_slot; |
| 2277 | int index; |
| 2278 | |
| 2279 | new_slot = func; |
| 2280 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 2281 | dbg("%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | /* Check for Multi-function device */ |
| 2283 | ctrl->pci_bus->number = func->bus; |
| 2284 | rc = pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte); |
| 2285 | if (rc) { |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 2286 | dbg("%s: rc = %d\n", __func__, rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | return rc; |
| 2288 | } |
| 2289 | |
| 2290 | if (temp_byte & 0x80) /* Multi-function device */ |
| 2291 | max_functions = 8; |
| 2292 | else |
| 2293 | max_functions = 1; |
| 2294 | |
| 2295 | function = 0; |
| 2296 | |
| 2297 | do { |
| 2298 | rc = configure_new_function(ctrl, new_slot, behind_bridge, resources); |
| 2299 | |
| 2300 | if (rc) { |
| 2301 | dbg("configure_new_function failed %d\n",rc); |
| 2302 | index = 0; |
| 2303 | |
| 2304 | while (new_slot) { |
| 2305 | new_slot = cpqhp_slot_find(new_slot->bus, new_slot->device, index++); |
| 2306 | |
| 2307 | if (new_slot) |
| 2308 | cpqhp_return_board_resources(new_slot, resources); |
| 2309 | } |
| 2310 | |
| 2311 | return rc; |
| 2312 | } |
| 2313 | |
| 2314 | function++; |
| 2315 | |
| 2316 | stop_it = 0; |
| 2317 | |
| 2318 | /* The following loop skips to the next present function |
| 2319 | * and creates a board structure */ |
| 2320 | |
| 2321 | while ((function < max_functions) && (!stop_it)) { |
| 2322 | pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID); |
| 2323 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2324 | if (ID == 0xFFFFFFFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | function++; |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2326 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | /* Setup slot structure. */ |
| 2328 | new_slot = cpqhp_slot_create(func->bus); |
| 2329 | |
| 2330 | if (new_slot == NULL) |
| 2331 | return 1; |
| 2332 | |
| 2333 | new_slot->bus = func->bus; |
| 2334 | new_slot->device = func->device; |
| 2335 | new_slot->function = function; |
| 2336 | new_slot->is_a_board = 1; |
| 2337 | new_slot->status = 0; |
| 2338 | |
| 2339 | stop_it++; |
| 2340 | } |
| 2341 | } |
| 2342 | |
| 2343 | } while (function < max_functions); |
| 2344 | dbg("returning from configure_new_device\n"); |
| 2345 | |
| 2346 | return 0; |
| 2347 | } |
| 2348 | |
| 2349 | |
| 2350 | /* |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2351 | * Configuration logic that involves the hotplug data structures and |
| 2352 | * their bookkeeping |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2353 | */ |
| 2354 | |
| 2355 | |
| 2356 | /** |
| 2357 | * configure_new_function - Configures the PCI header information of one device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | * @ctrl: pointer to controller structure |
| 2359 | * @func: pointer to function structure |
| 2360 | * @behind_bridge: 1 if this is a recursive call, 0 if not |
| 2361 | * @resources: pointer to set of resource lists |
| 2362 | * |
| 2363 | * Calls itself recursively for bridged devices. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 2364 | * Returns 0 if success. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | */ |
| 2366 | static int configure_new_function(struct controller *ctrl, struct pci_func *func, |
| 2367 | u8 behind_bridge, |
| 2368 | struct resource_lists *resources) |
| 2369 | { |
| 2370 | int cloop; |
| 2371 | u8 IRQ = 0; |
| 2372 | u8 temp_byte; |
| 2373 | u8 device; |
| 2374 | u8 class_code; |
| 2375 | u16 command; |
| 2376 | u16 temp_word; |
| 2377 | u32 temp_dword; |
| 2378 | u32 rc; |
| 2379 | u32 temp_register; |
| 2380 | u32 base; |
| 2381 | u32 ID; |
| 2382 | unsigned int devfn; |
| 2383 | struct pci_resource *mem_node; |
| 2384 | struct pci_resource *p_mem_node; |
| 2385 | struct pci_resource *io_node; |
| 2386 | struct pci_resource *bus_node; |
| 2387 | struct pci_resource *hold_mem_node; |
| 2388 | struct pci_resource *hold_p_mem_node; |
| 2389 | struct pci_resource *hold_IO_node; |
| 2390 | struct pci_resource *hold_bus_node; |
| 2391 | struct irq_mapping irqs; |
| 2392 | struct pci_func *new_slot; |
| 2393 | struct pci_bus *pci_bus; |
| 2394 | struct resource_lists temp_resources; |
| 2395 | |
| 2396 | pci_bus = ctrl->pci_bus; |
| 2397 | pci_bus->number = func->bus; |
| 2398 | devfn = PCI_DEVFN(func->device, func->function); |
| 2399 | |
| 2400 | /* Check for Bridge */ |
| 2401 | rc = pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte); |
| 2402 | if (rc) |
| 2403 | return rc; |
| 2404 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2405 | if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | /* set Primary bus */ |
| 2407 | dbg("set Primary bus = %d\n", func->bus); |
| 2408 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus); |
| 2409 | if (rc) |
| 2410 | return rc; |
| 2411 | |
| 2412 | /* find range of busses to use */ |
| 2413 | dbg("find ranges of buses to use\n"); |
| 2414 | bus_node = get_max_resource(&(resources->bus_head), 1); |
| 2415 | |
| 2416 | /* If we don't have any busses to allocate, we can't continue */ |
| 2417 | if (!bus_node) |
| 2418 | return -ENOMEM; |
| 2419 | |
| 2420 | /* set Secondary bus */ |
| 2421 | temp_byte = bus_node->base; |
| 2422 | dbg("set Secondary bus = %d\n", bus_node->base); |
| 2423 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte); |
| 2424 | if (rc) |
| 2425 | return rc; |
| 2426 | |
| 2427 | /* set subordinate bus */ |
| 2428 | temp_byte = bus_node->base + bus_node->length - 1; |
| 2429 | dbg("set subordinate bus = %d\n", bus_node->base + bus_node->length - 1); |
| 2430 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte); |
| 2431 | if (rc) |
| 2432 | return rc; |
| 2433 | |
| 2434 | /* set subordinate Latency Timer and base Latency Timer */ |
| 2435 | temp_byte = 0x40; |
| 2436 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, temp_byte); |
| 2437 | if (rc) |
| 2438 | return rc; |
| 2439 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte); |
| 2440 | if (rc) |
| 2441 | return rc; |
| 2442 | |
| 2443 | /* set Cache Line size */ |
| 2444 | temp_byte = 0x08; |
| 2445 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte); |
| 2446 | if (rc) |
| 2447 | return rc; |
| 2448 | |
| 2449 | /* Setup the IO, memory, and prefetchable windows */ |
| 2450 | io_node = get_max_resource(&(resources->io_head), 0x1000); |
| 2451 | if (!io_node) |
| 2452 | return -ENOMEM; |
| 2453 | mem_node = get_max_resource(&(resources->mem_head), 0x100000); |
| 2454 | if (!mem_node) |
| 2455 | return -ENOMEM; |
| 2456 | p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000); |
| 2457 | if (!p_mem_node) |
| 2458 | return -ENOMEM; |
| 2459 | dbg("Setup the IO, memory, and prefetchable windows\n"); |
| 2460 | dbg("io_node\n"); |
| 2461 | dbg("(base, len, next) (%x, %x, %p)\n", io_node->base, |
| 2462 | io_node->length, io_node->next); |
| 2463 | dbg("mem_node\n"); |
| 2464 | dbg("(base, len, next) (%x, %x, %p)\n", mem_node->base, |
| 2465 | mem_node->length, mem_node->next); |
| 2466 | dbg("p_mem_node\n"); |
| 2467 | dbg("(base, len, next) (%x, %x, %p)\n", p_mem_node->base, |
| 2468 | p_mem_node->length, p_mem_node->next); |
| 2469 | |
| 2470 | /* set up the IRQ info */ |
| 2471 | if (!resources->irqs) { |
| 2472 | irqs.barber_pole = 0; |
| 2473 | irqs.interrupt[0] = 0; |
| 2474 | irqs.interrupt[1] = 0; |
| 2475 | irqs.interrupt[2] = 0; |
| 2476 | irqs.interrupt[3] = 0; |
| 2477 | irqs.valid_INT = 0; |
| 2478 | } else { |
| 2479 | irqs.barber_pole = resources->irqs->barber_pole; |
| 2480 | irqs.interrupt[0] = resources->irqs->interrupt[0]; |
| 2481 | irqs.interrupt[1] = resources->irqs->interrupt[1]; |
| 2482 | irqs.interrupt[2] = resources->irqs->interrupt[2]; |
| 2483 | irqs.interrupt[3] = resources->irqs->interrupt[3]; |
| 2484 | irqs.valid_INT = resources->irqs->valid_INT; |
| 2485 | } |
| 2486 | |
| 2487 | /* set up resource lists that are now aligned on top and bottom |
| 2488 | * for anything behind the bridge. */ |
| 2489 | temp_resources.bus_head = bus_node; |
| 2490 | temp_resources.io_head = io_node; |
| 2491 | temp_resources.mem_head = mem_node; |
| 2492 | temp_resources.p_mem_head = p_mem_node; |
| 2493 | temp_resources.irqs = &irqs; |
| 2494 | |
| 2495 | /* Make copies of the nodes we are going to pass down so that |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 2496 | * if there is a problem,we can just use these to free resources |
| 2497 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2498 | hold_bus_node = kmalloc(sizeof(*hold_bus_node), GFP_KERNEL); |
| 2499 | hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL); |
| 2500 | hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL); |
| 2501 | hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), GFP_KERNEL); |
| 2502 | |
| 2503 | if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) { |
| 2504 | kfree(hold_bus_node); |
| 2505 | kfree(hold_IO_node); |
| 2506 | kfree(hold_mem_node); |
| 2507 | kfree(hold_p_mem_node); |
| 2508 | |
| 2509 | return 1; |
| 2510 | } |
| 2511 | |
| 2512 | memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource)); |
| 2513 | |
| 2514 | bus_node->base += 1; |
| 2515 | bus_node->length -= 1; |
| 2516 | bus_node->next = NULL; |
| 2517 | |
| 2518 | /* If we have IO resources copy them and fill in the bridge's |
| 2519 | * IO range registers */ |
| 2520 | if (io_node) { |
| 2521 | memcpy(hold_IO_node, io_node, sizeof(struct pci_resource)); |
| 2522 | io_node->next = NULL; |
| 2523 | |
| 2524 | /* set IO base and Limit registers */ |
| 2525 | temp_byte = io_node->base >> 8; |
| 2526 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte); |
| 2527 | |
| 2528 | temp_byte = (io_node->base + io_node->length - 1) >> 8; |
| 2529 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte); |
| 2530 | } else { |
| 2531 | kfree(hold_IO_node); |
| 2532 | hold_IO_node = NULL; |
| 2533 | } |
| 2534 | |
| 2535 | /* If we have memory resources copy them and fill in the |
| 2536 | * bridge's memory range registers. Otherwise, fill in the |
| 2537 | * range registers with values that disable them. */ |
| 2538 | if (mem_node) { |
| 2539 | memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource)); |
| 2540 | mem_node->next = NULL; |
| 2541 | |
| 2542 | /* set Mem base and Limit registers */ |
| 2543 | temp_word = mem_node->base >> 16; |
| 2544 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); |
| 2545 | |
| 2546 | temp_word = (mem_node->base + mem_node->length - 1) >> 16; |
| 2547 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); |
| 2548 | } else { |
| 2549 | temp_word = 0xFFFF; |
| 2550 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); |
| 2551 | |
| 2552 | temp_word = 0x0000; |
| 2553 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); |
| 2554 | |
| 2555 | kfree(hold_mem_node); |
| 2556 | hold_mem_node = NULL; |
| 2557 | } |
| 2558 | |
Adrian Bunk | 2555f7b | 2005-11-21 00:05:21 +0100 | [diff] [blame] | 2559 | memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource)); |
| 2560 | p_mem_node->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | |
Adrian Bunk | 2555f7b | 2005-11-21 00:05:21 +0100 | [diff] [blame] | 2562 | /* set Pre Mem base and Limit registers */ |
| 2563 | temp_word = p_mem_node->base >> 16; |
| 2564 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2565 | |
Adrian Bunk | 2555f7b | 2005-11-21 00:05:21 +0100 | [diff] [blame] | 2566 | temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16; |
| 2567 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 2569 | /* Adjust this to compensate for extra adjustment in first loop |
| 2570 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2571 | irqs.barber_pole--; |
| 2572 | |
| 2573 | rc = 0; |
| 2574 | |
| 2575 | /* Here we actually find the devices and configure them */ |
| 2576 | for (device = 0; (device <= 0x1F) && !rc; device++) { |
| 2577 | irqs.barber_pole = (irqs.barber_pole + 1) & 0x03; |
| 2578 | |
| 2579 | ID = 0xFFFFFFFF; |
| 2580 | pci_bus->number = hold_bus_node->base; |
| 2581 | pci_bus_read_config_dword (pci_bus, PCI_DEVFN(device, 0), 0x00, &ID); |
| 2582 | pci_bus->number = func->bus; |
| 2583 | |
| 2584 | if (ID != 0xFFFFFFFF) { /* device present */ |
| 2585 | /* Setup slot structure. */ |
| 2586 | new_slot = cpqhp_slot_create(hold_bus_node->base); |
| 2587 | |
| 2588 | if (new_slot == NULL) { |
| 2589 | rc = -ENOMEM; |
| 2590 | continue; |
| 2591 | } |
| 2592 | |
| 2593 | new_slot->bus = hold_bus_node->base; |
| 2594 | new_slot->device = device; |
| 2595 | new_slot->function = 0; |
| 2596 | new_slot->is_a_board = 1; |
| 2597 | new_slot->status = 0; |
| 2598 | |
| 2599 | rc = configure_new_device(ctrl, new_slot, 1, &temp_resources); |
| 2600 | dbg("configure_new_device rc=0x%x\n",rc); |
| 2601 | } /* End of IF (device in slot?) */ |
| 2602 | } /* End of FOR loop */ |
| 2603 | |
| 2604 | if (rc) |
| 2605 | goto free_and_out; |
| 2606 | /* save the interrupt routing information */ |
| 2607 | if (resources->irqs) { |
| 2608 | resources->irqs->interrupt[0] = irqs.interrupt[0]; |
| 2609 | resources->irqs->interrupt[1] = irqs.interrupt[1]; |
| 2610 | resources->irqs->interrupt[2] = irqs.interrupt[2]; |
| 2611 | resources->irqs->interrupt[3] = irqs.interrupt[3]; |
| 2612 | resources->irqs->valid_INT = irqs.valid_INT; |
| 2613 | } else if (!behind_bridge) { |
| 2614 | /* We need to hook up the interrupts here */ |
| 2615 | for (cloop = 0; cloop < 4; cloop++) { |
| 2616 | if (irqs.valid_INT & (0x01 << cloop)) { |
| 2617 | rc = cpqhp_set_irq(func->bus, func->device, |
Bjorn Helgaas | 98d3333 | 2008-12-09 16:11:41 -0700 | [diff] [blame] | 2618 | cloop + 1, irqs.interrupt[cloop]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2619 | if (rc) |
| 2620 | goto free_and_out; |
| 2621 | } |
| 2622 | } /* end of for loop */ |
| 2623 | } |
| 2624 | /* Return unused bus resources |
| 2625 | * First use the temporary node to store information for |
| 2626 | * the board */ |
| 2627 | if (hold_bus_node && bus_node && temp_resources.bus_head) { |
| 2628 | hold_bus_node->length = bus_node->base - hold_bus_node->base; |
| 2629 | |
| 2630 | hold_bus_node->next = func->bus_head; |
| 2631 | func->bus_head = hold_bus_node; |
| 2632 | |
| 2633 | temp_byte = temp_resources.bus_head->base - 1; |
| 2634 | |
| 2635 | /* set subordinate bus */ |
| 2636 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte); |
| 2637 | |
| 2638 | if (temp_resources.bus_head->length == 0) { |
| 2639 | kfree(temp_resources.bus_head); |
| 2640 | temp_resources.bus_head = NULL; |
| 2641 | } else { |
| 2642 | return_resource(&(resources->bus_head), temp_resources.bus_head); |
| 2643 | } |
| 2644 | } |
| 2645 | |
| 2646 | /* If we have IO space available and there is some left, |
| 2647 | * return the unused portion */ |
| 2648 | if (hold_IO_node && temp_resources.io_head) { |
| 2649 | io_node = do_pre_bridge_resource_split(&(temp_resources.io_head), |
| 2650 | &hold_IO_node, 0x1000); |
| 2651 | |
| 2652 | /* Check if we were able to split something off */ |
| 2653 | if (io_node) { |
| 2654 | hold_IO_node->base = io_node->base + io_node->length; |
| 2655 | |
| 2656 | temp_byte = (hold_IO_node->base) >> 8; |
| 2657 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_IO_BASE, temp_byte); |
| 2658 | |
| 2659 | return_resource(&(resources->io_head), io_node); |
| 2660 | } |
| 2661 | |
| 2662 | io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000); |
| 2663 | |
| 2664 | /* Check if we were able to split something off */ |
| 2665 | if (io_node) { |
| 2666 | /* First use the temporary node to store |
| 2667 | * information for the board */ |
| 2668 | hold_IO_node->length = io_node->base - hold_IO_node->base; |
| 2669 | |
| 2670 | /* If we used any, add it to the board's list */ |
| 2671 | if (hold_IO_node->length) { |
| 2672 | hold_IO_node->next = func->io_head; |
| 2673 | func->io_head = hold_IO_node; |
| 2674 | |
| 2675 | temp_byte = (io_node->base - 1) >> 8; |
| 2676 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte); |
| 2677 | |
| 2678 | return_resource(&(resources->io_head), io_node); |
| 2679 | } else { |
| 2680 | /* it doesn't need any IO */ |
| 2681 | temp_word = 0x0000; |
| 2682 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_IO_LIMIT, temp_word); |
| 2683 | |
| 2684 | return_resource(&(resources->io_head), io_node); |
| 2685 | kfree(hold_IO_node); |
| 2686 | } |
| 2687 | } else { |
| 2688 | /* it used most of the range */ |
| 2689 | hold_IO_node->next = func->io_head; |
| 2690 | func->io_head = hold_IO_node; |
| 2691 | } |
| 2692 | } else if (hold_IO_node) { |
| 2693 | /* it used the whole range */ |
| 2694 | hold_IO_node->next = func->io_head; |
| 2695 | func->io_head = hold_IO_node; |
| 2696 | } |
| 2697 | /* If we have memory space available and there is some left, |
| 2698 | * return the unused portion */ |
| 2699 | if (hold_mem_node && temp_resources.mem_head) { |
| 2700 | mem_node = do_pre_bridge_resource_split(&(temp_resources. mem_head), |
| 2701 | &hold_mem_node, 0x100000); |
| 2702 | |
| 2703 | /* Check if we were able to split something off */ |
| 2704 | if (mem_node) { |
| 2705 | hold_mem_node->base = mem_node->base + mem_node->length; |
| 2706 | |
| 2707 | temp_word = (hold_mem_node->base) >> 16; |
| 2708 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word); |
| 2709 | |
| 2710 | return_resource(&(resources->mem_head), mem_node); |
| 2711 | } |
| 2712 | |
| 2713 | mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000); |
| 2714 | |
| 2715 | /* Check if we were able to split something off */ |
| 2716 | if (mem_node) { |
| 2717 | /* First use the temporary node to store |
| 2718 | * information for the board */ |
| 2719 | hold_mem_node->length = mem_node->base - hold_mem_node->base; |
| 2720 | |
| 2721 | if (hold_mem_node->length) { |
| 2722 | hold_mem_node->next = func->mem_head; |
| 2723 | func->mem_head = hold_mem_node; |
| 2724 | |
| 2725 | /* configure end address */ |
| 2726 | temp_word = (mem_node->base - 1) >> 16; |
| 2727 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); |
| 2728 | |
| 2729 | /* Return unused resources to the pool */ |
| 2730 | return_resource(&(resources->mem_head), mem_node); |
| 2731 | } else { |
| 2732 | /* it doesn't need any Mem */ |
| 2733 | temp_word = 0x0000; |
| 2734 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); |
| 2735 | |
| 2736 | return_resource(&(resources->mem_head), mem_node); |
| 2737 | kfree(hold_mem_node); |
| 2738 | } |
| 2739 | } else { |
| 2740 | /* it used most of the range */ |
| 2741 | hold_mem_node->next = func->mem_head; |
| 2742 | func->mem_head = hold_mem_node; |
| 2743 | } |
| 2744 | } else if (hold_mem_node) { |
| 2745 | /* it used the whole range */ |
| 2746 | hold_mem_node->next = func->mem_head; |
| 2747 | func->mem_head = hold_mem_node; |
| 2748 | } |
| 2749 | /* If we have prefetchable memory space available and there |
| 2750 | * is some left at the end, return the unused portion */ |
| 2751 | if (hold_p_mem_node && temp_resources.p_mem_head) { |
| 2752 | p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head), |
| 2753 | &hold_p_mem_node, 0x100000); |
| 2754 | |
| 2755 | /* Check if we were able to split something off */ |
| 2756 | if (p_mem_node) { |
| 2757 | hold_p_mem_node->base = p_mem_node->base + p_mem_node->length; |
| 2758 | |
| 2759 | temp_word = (hold_p_mem_node->base) >> 16; |
| 2760 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); |
| 2761 | |
| 2762 | return_resource(&(resources->p_mem_head), p_mem_node); |
| 2763 | } |
| 2764 | |
| 2765 | p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000); |
| 2766 | |
| 2767 | /* Check if we were able to split something off */ |
| 2768 | if (p_mem_node) { |
| 2769 | /* First use the temporary node to store |
| 2770 | * information for the board */ |
| 2771 | hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base; |
| 2772 | |
| 2773 | /* If we used any, add it to the board's list */ |
| 2774 | if (hold_p_mem_node->length) { |
| 2775 | hold_p_mem_node->next = func->p_mem_head; |
| 2776 | func->p_mem_head = hold_p_mem_node; |
| 2777 | |
| 2778 | temp_word = (p_mem_node->base - 1) >> 16; |
| 2779 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); |
| 2780 | |
| 2781 | return_resource(&(resources->p_mem_head), p_mem_node); |
| 2782 | } else { |
| 2783 | /* it doesn't need any PMem */ |
| 2784 | temp_word = 0x0000; |
| 2785 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); |
| 2786 | |
| 2787 | return_resource(&(resources->p_mem_head), p_mem_node); |
| 2788 | kfree(hold_p_mem_node); |
| 2789 | } |
| 2790 | } else { |
| 2791 | /* it used the most of the range */ |
| 2792 | hold_p_mem_node->next = func->p_mem_head; |
| 2793 | func->p_mem_head = hold_p_mem_node; |
| 2794 | } |
| 2795 | } else if (hold_p_mem_node) { |
| 2796 | /* it used the whole range */ |
| 2797 | hold_p_mem_node->next = func->p_mem_head; |
| 2798 | func->p_mem_head = hold_p_mem_node; |
| 2799 | } |
| 2800 | /* We should be configuring an IRQ and the bridge's base address |
| 2801 | * registers if it needs them. Although we have never seen such |
| 2802 | * a device */ |
| 2803 | |
| 2804 | /* enable card */ |
| 2805 | command = 0x0157; /* = PCI_COMMAND_IO | |
| 2806 | * PCI_COMMAND_MEMORY | |
| 2807 | * PCI_COMMAND_MASTER | |
| 2808 | * PCI_COMMAND_INVALIDATE | |
| 2809 | * PCI_COMMAND_PARITY | |
| 2810 | * PCI_COMMAND_SERR */ |
| 2811 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_COMMAND, command); |
| 2812 | |
| 2813 | /* set Bridge Control Register */ |
| 2814 | command = 0x07; /* = PCI_BRIDGE_CTL_PARITY | |
| 2815 | * PCI_BRIDGE_CTL_SERR | |
| 2816 | * PCI_BRIDGE_CTL_NO_ISA */ |
| 2817 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_BRIDGE_CONTROL, command); |
| 2818 | } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) { |
| 2819 | /* Standard device */ |
| 2820 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); |
| 2821 | |
| 2822 | if (class_code == PCI_BASE_CLASS_DISPLAY) { |
| 2823 | /* Display (video) adapter (not supported) */ |
| 2824 | return DEVICE_TYPE_NOT_SUPPORTED; |
| 2825 | } |
| 2826 | /* Figure out IO and memory needs */ |
| 2827 | for (cloop = 0x10; cloop <= 0x24; cloop += 4) { |
| 2828 | temp_register = 0xFFFFFFFF; |
| 2829 | |
| 2830 | dbg("CND: bus=%d, devfn=%d, offset=%d\n", pci_bus->number, devfn, cloop); |
| 2831 | rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register); |
| 2832 | |
| 2833 | rc = pci_bus_read_config_dword (pci_bus, devfn, cloop, &temp_register); |
| 2834 | dbg("CND: base = 0x%x\n", temp_register); |
| 2835 | |
| 2836 | if (temp_register) { /* If this register is implemented */ |
| 2837 | if ((temp_register & 0x03L) == 0x01) { |
| 2838 | /* Map IO */ |
| 2839 | |
| 2840 | /* set base = amount of IO space */ |
| 2841 | base = temp_register & 0xFFFFFFFC; |
| 2842 | base = ~base + 1; |
| 2843 | |
| 2844 | dbg("CND: length = 0x%x\n", base); |
| 2845 | io_node = get_io_resource(&(resources->io_head), base); |
| 2846 | dbg("Got io_node start = %8.8x, length = %8.8x next (%p)\n", |
| 2847 | io_node->base, io_node->length, io_node->next); |
| 2848 | dbg("func (%p) io_head (%p)\n", func, func->io_head); |
| 2849 | |
| 2850 | /* allocate the resource to the board */ |
| 2851 | if (io_node) { |
| 2852 | base = io_node->base; |
| 2853 | |
| 2854 | io_node->next = func->io_head; |
| 2855 | func->io_head = io_node; |
| 2856 | } else |
| 2857 | return -ENOMEM; |
| 2858 | } else if ((temp_register & 0x0BL) == 0x08) { |
| 2859 | /* Map prefetchable memory */ |
| 2860 | base = temp_register & 0xFFFFFFF0; |
| 2861 | base = ~base + 1; |
| 2862 | |
| 2863 | dbg("CND: length = 0x%x\n", base); |
| 2864 | p_mem_node = get_resource(&(resources->p_mem_head), base); |
| 2865 | |
| 2866 | /* allocate the resource to the board */ |
| 2867 | if (p_mem_node) { |
| 2868 | base = p_mem_node->base; |
| 2869 | |
| 2870 | p_mem_node->next = func->p_mem_head; |
| 2871 | func->p_mem_head = p_mem_node; |
| 2872 | } else |
| 2873 | return -ENOMEM; |
| 2874 | } else if ((temp_register & 0x0BL) == 0x00) { |
| 2875 | /* Map memory */ |
| 2876 | base = temp_register & 0xFFFFFFF0; |
| 2877 | base = ~base + 1; |
| 2878 | |
| 2879 | dbg("CND: length = 0x%x\n", base); |
| 2880 | mem_node = get_resource(&(resources->mem_head), base); |
| 2881 | |
| 2882 | /* allocate the resource to the board */ |
| 2883 | if (mem_node) { |
| 2884 | base = mem_node->base; |
| 2885 | |
| 2886 | mem_node->next = func->mem_head; |
| 2887 | func->mem_head = mem_node; |
| 2888 | } else |
| 2889 | return -ENOMEM; |
| 2890 | } else if ((temp_register & 0x0BL) == 0x04) { |
| 2891 | /* Map memory */ |
| 2892 | base = temp_register & 0xFFFFFFF0; |
| 2893 | base = ~base + 1; |
| 2894 | |
| 2895 | dbg("CND: length = 0x%x\n", base); |
| 2896 | mem_node = get_resource(&(resources->mem_head), base); |
| 2897 | |
| 2898 | /* allocate the resource to the board */ |
| 2899 | if (mem_node) { |
| 2900 | base = mem_node->base; |
| 2901 | |
| 2902 | mem_node->next = func->mem_head; |
| 2903 | func->mem_head = mem_node; |
| 2904 | } else |
| 2905 | return -ENOMEM; |
| 2906 | } else if ((temp_register & 0x0BL) == 0x06) { |
| 2907 | /* Those bits are reserved, we can't handle this */ |
| 2908 | return 1; |
| 2909 | } else { |
| 2910 | /* Requesting space below 1M */ |
| 2911 | return NOT_ENOUGH_RESOURCES; |
| 2912 | } |
| 2913 | |
| 2914 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base); |
| 2915 | |
| 2916 | /* Check for 64-bit base */ |
| 2917 | if ((temp_register & 0x07L) == 0x04) { |
| 2918 | cloop += 4; |
| 2919 | |
| 2920 | /* Upper 32 bits of address always zero |
| 2921 | * on today's systems */ |
| 2922 | /* FIXME this is probably not true on |
| 2923 | * Alpha and ia64??? */ |
| 2924 | base = 0; |
| 2925 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base); |
| 2926 | } |
| 2927 | } |
| 2928 | } /* End of base register loop */ |
| 2929 | if (cpqhp_legacy_mode) { |
| 2930 | /* Figure out which interrupt pin this function uses */ |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 2931 | rc = pci_bus_read_config_byte (pci_bus, devfn, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2932 | PCI_INTERRUPT_PIN, &temp_byte); |
| 2933 | |
| 2934 | /* If this function needs an interrupt and we are behind |
| 2935 | * a bridge and the pin is tied to something that's |
| 2936 | * alread mapped, set this one the same */ |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 2937 | if (temp_byte && resources->irqs && |
| 2938 | (resources->irqs->valid_INT & |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2939 | (0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) { |
| 2940 | /* We have to share with something already set up */ |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 2941 | IRQ = resources->irqs->interrupt[(temp_byte + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | resources->irqs->barber_pole - 1) & 0x03]; |
| 2943 | } else { |
| 2944 | /* Program IRQ based on card type */ |
| 2945 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); |
| 2946 | |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2947 | if (class_code == PCI_BASE_CLASS_STORAGE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2948 | IRQ = cpqhp_disk_irq; |
Alex Chiang | 1d3ecf1 | 2009-03-31 09:23:41 -0600 | [diff] [blame] | 2949 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | IRQ = cpqhp_nic_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | } |
| 2952 | |
| 2953 | /* IRQ Line */ |
| 2954 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ); |
| 2955 | } |
| 2956 | |
| 2957 | if (!behind_bridge) { |
Bjorn Helgaas | 98d3333 | 2008-12-09 16:11:41 -0700 | [diff] [blame] | 2958 | rc = cpqhp_set_irq(func->bus, func->device, temp_byte, IRQ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | if (rc) |
| 2960 | return 1; |
| 2961 | } else { |
| 2962 | /* TBD - this code may also belong in the other clause |
| 2963 | * of this If statement */ |
| 2964 | resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ; |
| 2965 | resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03; |
| 2966 | } |
| 2967 | |
| 2968 | /* Latency Timer */ |
| 2969 | temp_byte = 0x40; |
| 2970 | rc = pci_bus_write_config_byte(pci_bus, devfn, |
| 2971 | PCI_LATENCY_TIMER, temp_byte); |
| 2972 | |
| 2973 | /* Cache Line size */ |
| 2974 | temp_byte = 0x08; |
| 2975 | rc = pci_bus_write_config_byte(pci_bus, devfn, |
| 2976 | PCI_CACHE_LINE_SIZE, temp_byte); |
| 2977 | |
| 2978 | /* disable ROM base Address */ |
| 2979 | temp_dword = 0x00L; |
| 2980 | rc = pci_bus_write_config_word(pci_bus, devfn, |
| 2981 | PCI_ROM_ADDRESS, temp_dword); |
| 2982 | |
| 2983 | /* enable card */ |
| 2984 | temp_word = 0x0157; /* = PCI_COMMAND_IO | |
| 2985 | * PCI_COMMAND_MEMORY | |
| 2986 | * PCI_COMMAND_MASTER | |
| 2987 | * PCI_COMMAND_INVALIDATE | |
| 2988 | * PCI_COMMAND_PARITY | |
| 2989 | * PCI_COMMAND_SERR */ |
| 2990 | rc = pci_bus_write_config_word (pci_bus, devfn, |
| 2991 | PCI_COMMAND, temp_word); |
| 2992 | } else { /* End of Not-A-Bridge else */ |
| 2993 | /* It's some strange type of PCI adapter (Cardbus?) */ |
| 2994 | return DEVICE_TYPE_NOT_SUPPORTED; |
| 2995 | } |
| 2996 | |
| 2997 | func->configured = 1; |
| 2998 | |
| 2999 | return 0; |
| 3000 | free_and_out: |
| 3001 | cpqhp_destroy_resource_list (&temp_resources); |
| 3002 | |
| 3003 | return_resource(&(resources-> bus_head), hold_bus_node); |
| 3004 | return_resource(&(resources-> io_head), hold_IO_node); |
| 3005 | return_resource(&(resources-> mem_head), hold_mem_node); |
| 3006 | return_resource(&(resources-> p_mem_head), hold_p_mem_node); |
| 3007 | return rc; |
| 3008 | } |