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 | * Jan 12, 2003 - Added 66/100/133MHz PCI-X support, |
| 28 | * Torben Mathiasen <torben.mathiasen@hp.com> |
| 29 | * |
| 30 | */ |
| 31 | |
| 32 | #include <linux/config.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/moduleparam.h> |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/types.h> |
| 37 | #include <linux/proc_fs.h> |
| 38 | #include <linux/slab.h> |
| 39 | #include <linux/workqueue.h> |
| 40 | #include <linux/pci.h> |
| 41 | #include <linux/init.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | |
| 44 | #include <asm/uaccess.h> |
| 45 | |
| 46 | #include "cpqphp.h" |
| 47 | #include "cpqphp_nvram.h" |
| 48 | #include "../../../arch/i386/pci/pci.h" /* horrible hack showing how processor dependent we are... */ |
| 49 | |
| 50 | |
| 51 | /* Global variables */ |
| 52 | int cpqhp_debug; |
| 53 | int cpqhp_legacy_mode; |
| 54 | struct controller *cpqhp_ctrl_list; /* = NULL */ |
| 55 | struct pci_func *cpqhp_slot_list[256]; |
| 56 | |
| 57 | /* local variables */ |
| 58 | static void __iomem *smbios_table; |
| 59 | static void __iomem *smbios_start; |
| 60 | static void __iomem *cpqhp_rom_start; |
| 61 | static int power_mode; |
| 62 | static int debug; |
Keith Moore | 4002307 | 2005-06-02 12:42:37 +0200 | [diff] [blame] | 63 | static int initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | #define DRIVER_VERSION "0.9.8" |
| 66 | #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>" |
| 67 | #define DRIVER_DESC "Compaq Hot Plug PCI Controller Driver" |
| 68 | |
| 69 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 70 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 71 | MODULE_LICENSE("GPL"); |
| 72 | |
| 73 | module_param(power_mode, bool, 0644); |
| 74 | MODULE_PARM_DESC(power_mode, "Power mode enabled or not"); |
| 75 | |
| 76 | module_param(debug, bool, 0644); |
| 77 | MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); |
| 78 | |
| 79 | #define CPQHPC_MODULE_MINOR 208 |
| 80 | |
| 81 | static int one_time_init (void); |
| 82 | static int set_attention_status (struct hotplug_slot *slot, u8 value); |
| 83 | static int process_SI (struct hotplug_slot *slot); |
| 84 | static int process_SS (struct hotplug_slot *slot); |
| 85 | static int hardware_test (struct hotplug_slot *slot, u32 value); |
| 86 | static int get_power_status (struct hotplug_slot *slot, u8 *value); |
| 87 | static int get_attention_status (struct hotplug_slot *slot, u8 *value); |
| 88 | static int get_latch_status (struct hotplug_slot *slot, u8 *value); |
| 89 | static int get_adapter_status (struct hotplug_slot *slot, u8 *value); |
| 90 | static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); |
| 91 | static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value); |
| 92 | |
| 93 | static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = { |
| 94 | .owner = THIS_MODULE, |
| 95 | .set_attention_status = set_attention_status, |
| 96 | .enable_slot = process_SI, |
| 97 | .disable_slot = process_SS, |
| 98 | .hardware_test = hardware_test, |
| 99 | .get_power_status = get_power_status, |
| 100 | .get_attention_status = get_attention_status, |
| 101 | .get_latch_status = get_latch_status, |
| 102 | .get_adapter_status = get_adapter_status, |
| 103 | .get_max_bus_speed = get_max_bus_speed, |
| 104 | .get_cur_bus_speed = get_cur_bus_speed, |
| 105 | }; |
| 106 | |
| 107 | |
| 108 | static inline int is_slot64bit(struct slot *slot) |
| 109 | { |
| 110 | return (readb(slot->p_sm_slot + SMBIOS_SLOT_WIDTH) == 0x06) ? 1 : 0; |
| 111 | } |
| 112 | |
| 113 | static inline int is_slot66mhz(struct slot *slot) |
| 114 | { |
| 115 | return (readb(slot->p_sm_slot + SMBIOS_SLOT_TYPE) == 0x0E) ? 1 : 0; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * detect_SMBIOS_pointer - find the System Management BIOS Table in mem region. |
| 120 | * |
| 121 | * @begin: begin pointer for region to be scanned. |
| 122 | * @end: end pointer for region to be scanned. |
| 123 | * |
| 124 | * Returns pointer to the head of the SMBIOS tables (or NULL) |
| 125 | * |
| 126 | */ |
| 127 | static void __iomem * detect_SMBIOS_pointer(void __iomem *begin, void __iomem *end) |
| 128 | { |
| 129 | void __iomem *fp; |
| 130 | void __iomem *endp; |
| 131 | u8 temp1, temp2, temp3, temp4; |
| 132 | int status = 0; |
| 133 | |
| 134 | endp = (end - sizeof(u32) + 1); |
| 135 | |
| 136 | for (fp = begin; fp <= endp; fp += 16) { |
| 137 | temp1 = readb(fp); |
| 138 | temp2 = readb(fp+1); |
| 139 | temp3 = readb(fp+2); |
| 140 | temp4 = readb(fp+3); |
| 141 | if (temp1 == '_' && |
| 142 | temp2 == 'S' && |
| 143 | temp3 == 'M' && |
| 144 | temp4 == '_') { |
| 145 | status = 1; |
| 146 | break; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | if (!status) |
| 151 | fp = NULL; |
| 152 | |
| 153 | dbg("Discovered SMBIOS Entry point at %p\n", fp); |
| 154 | |
| 155 | return fp; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * init_SERR - Initializes the per slot SERR generation. |
| 160 | * |
| 161 | * For unexpected switch opens |
| 162 | * |
| 163 | */ |
| 164 | static int init_SERR(struct controller * ctrl) |
| 165 | { |
| 166 | u32 tempdword; |
| 167 | u32 number_of_slots; |
| 168 | u8 physical_slot; |
| 169 | |
| 170 | if (!ctrl) |
| 171 | return 1; |
| 172 | |
| 173 | tempdword = ctrl->first_slot; |
| 174 | |
| 175 | number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; |
| 176 | // Loop through slots |
| 177 | while (number_of_slots) { |
| 178 | physical_slot = tempdword; |
| 179 | writeb(0, ctrl->hpc_reg + SLOT_SERR); |
| 180 | tempdword++; |
| 181 | number_of_slots--; |
| 182 | } |
| 183 | |
| 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | |
| 188 | /* nice debugging output */ |
| 189 | static int pci_print_IRQ_route (void) |
| 190 | { |
| 191 | struct irq_routing_table *routing_table; |
| 192 | int len; |
| 193 | int loop; |
| 194 | |
| 195 | u8 tbus, tdevice, tslot; |
| 196 | |
| 197 | routing_table = pcibios_get_irq_routing_table(); |
| 198 | if (routing_table == NULL) { |
| 199 | err("No BIOS Routing Table??? Not good\n"); |
| 200 | return -ENOMEM; |
| 201 | } |
| 202 | |
| 203 | len = (routing_table->size - sizeof(struct irq_routing_table)) / |
| 204 | sizeof(struct irq_info); |
| 205 | // Make sure I got at least one entry |
| 206 | if (len == 0) { |
| 207 | kfree(routing_table); |
| 208 | return -1; |
| 209 | } |
| 210 | |
| 211 | dbg("bus dev func slot\n"); |
| 212 | |
| 213 | for (loop = 0; loop < len; ++loop) { |
| 214 | tbus = routing_table->slots[loop].bus; |
| 215 | tdevice = routing_table->slots[loop].devfn; |
| 216 | tslot = routing_table->slots[loop].slot; |
| 217 | dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot); |
| 218 | |
| 219 | } |
| 220 | kfree(routing_table); |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | |
| 225 | /** |
| 226 | * get_subsequent_smbios_entry: get the next entry from bios table. |
| 227 | * |
| 228 | * Gets the first entry if previous == NULL |
| 229 | * Otherwise, returns the next entry |
| 230 | * Uses global SMBIOS Table pointer |
| 231 | * |
| 232 | * @curr: %NULL or pointer to previously returned structure |
| 233 | * |
| 234 | * returns a pointer to an SMBIOS structure or NULL if none found |
| 235 | */ |
| 236 | static void __iomem *get_subsequent_smbios_entry(void __iomem *smbios_start, |
| 237 | void __iomem *smbios_table, |
| 238 | void __iomem *curr) |
| 239 | { |
| 240 | u8 bail = 0; |
| 241 | u8 previous_byte = 1; |
| 242 | void __iomem *p_temp; |
| 243 | void __iomem *p_max; |
| 244 | |
| 245 | if (!smbios_table || !curr) |
| 246 | return(NULL); |
| 247 | |
| 248 | // set p_max to the end of the table |
| 249 | p_max = smbios_start + readw(smbios_table + ST_LENGTH); |
| 250 | |
| 251 | p_temp = curr; |
| 252 | p_temp += readb(curr + SMBIOS_GENERIC_LENGTH); |
| 253 | |
| 254 | while ((p_temp < p_max) && !bail) { |
| 255 | /* Look for the double NULL terminator |
| 256 | * The first condition is the previous byte |
| 257 | * and the second is the curr */ |
| 258 | if (!previous_byte && !(readb(p_temp))) { |
| 259 | bail = 1; |
| 260 | } |
| 261 | |
| 262 | previous_byte = readb(p_temp); |
| 263 | p_temp++; |
| 264 | } |
| 265 | |
| 266 | if (p_temp < p_max) { |
| 267 | return p_temp; |
| 268 | } else { |
| 269 | return NULL; |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | |
| 274 | /** |
| 275 | * get_SMBIOS_entry |
| 276 | * |
| 277 | * @type:SMBIOS structure type to be returned |
| 278 | * @previous: %NULL or pointer to previously returned structure |
| 279 | * |
| 280 | * Gets the first entry of the specified type if previous == NULL |
| 281 | * Otherwise, returns the next entry of the given type. |
| 282 | * Uses global SMBIOS Table pointer |
| 283 | * Uses get_subsequent_smbios_entry |
| 284 | * |
| 285 | * returns a pointer to an SMBIOS structure or %NULL if none found |
| 286 | */ |
| 287 | static void __iomem *get_SMBIOS_entry(void __iomem *smbios_start, |
| 288 | void __iomem *smbios_table, |
| 289 | u8 type, |
| 290 | void __iomem *previous) |
| 291 | { |
| 292 | if (!smbios_table) |
| 293 | return NULL; |
| 294 | |
| 295 | if (!previous) { |
| 296 | previous = smbios_start; |
| 297 | } else { |
| 298 | previous = get_subsequent_smbios_entry(smbios_start, |
| 299 | smbios_table, previous); |
| 300 | } |
| 301 | |
| 302 | while (previous) { |
| 303 | if (readb(previous + SMBIOS_GENERIC_TYPE) != type) { |
| 304 | previous = get_subsequent_smbios_entry(smbios_start, |
| 305 | smbios_table, previous); |
| 306 | } else { |
| 307 | break; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | return previous; |
| 312 | } |
| 313 | |
| 314 | static void release_slot(struct hotplug_slot *hotplug_slot) |
| 315 | { |
| 316 | struct slot *slot = hotplug_slot->private; |
| 317 | |
| 318 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 319 | |
| 320 | kfree(slot->hotplug_slot->info); |
| 321 | kfree(slot->hotplug_slot->name); |
| 322 | kfree(slot->hotplug_slot); |
| 323 | kfree(slot); |
| 324 | } |
| 325 | |
| 326 | static int ctrl_slot_setup(struct controller *ctrl, |
| 327 | void __iomem *smbios_start, |
| 328 | void __iomem *smbios_table) |
| 329 | { |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 330 | struct slot *slot; |
| 331 | struct hotplug_slot *hotplug_slot; |
| 332 | struct hotplug_slot_info *hotplug_slot_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | u8 number_of_slots; |
| 334 | u8 slot_device; |
| 335 | u8 slot_number; |
| 336 | u8 ctrl_slot; |
| 337 | u32 tempdword; |
| 338 | void __iomem *slot_entry= NULL; |
| 339 | int result = -ENOMEM; |
| 340 | |
| 341 | dbg("%s\n", __FUNCTION__); |
| 342 | |
| 343 | tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 344 | |
| 345 | number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; |
| 346 | slot_device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; |
| 347 | slot_number = ctrl->first_slot; |
| 348 | |
| 349 | while (number_of_slots) { |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 350 | slot = kmalloc(sizeof(*slot), GFP_KERNEL); |
| 351 | if (!slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | goto error; |
| 353 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 354 | memset(slot, 0, sizeof(struct slot)); |
| 355 | slot->hotplug_slot = kmalloc(sizeof(*(slot->hotplug_slot)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | GFP_KERNEL); |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 357 | if (!slot->hotplug_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | goto error_slot; |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 359 | hotplug_slot = slot->hotplug_slot; |
| 360 | memset(hotplug_slot, 0, sizeof(struct hotplug_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 362 | hotplug_slot->info = |
| 363 | kmalloc(sizeof(*(hotplug_slot->info)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | GFP_KERNEL); |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 365 | if (!hotplug_slot->info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | goto error_hpslot; |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 367 | hotplug_slot_info = hotplug_slot->info; |
| 368 | memset(hotplug_slot_info, 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | sizeof(struct hotplug_slot_info)); |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 370 | hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL); |
| 371 | |
| 372 | if (!hotplug_slot->name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | goto error_info; |
| 374 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 375 | slot->ctrl = ctrl; |
| 376 | slot->bus = ctrl->bus; |
| 377 | slot->device = slot_device; |
| 378 | slot->number = slot_number; |
| 379 | dbg("slot->number = %d\n", slot->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
| 381 | slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9, |
| 382 | slot_entry); |
| 383 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 384 | while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != |
| 385 | slot->number)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | slot_entry = get_SMBIOS_entry(smbios_start, |
| 387 | smbios_table, 9, slot_entry); |
| 388 | } |
| 389 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 390 | slot->p_sm_slot = slot_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 392 | init_timer(&slot->task_event); |
| 393 | slot->task_event.expires = jiffies + 5 * HZ; |
| 394 | slot->task_event.function = cpqhp_pushbutton_thread; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
| 396 | //FIXME: these capabilities aren't used but if they are |
| 397 | // they need to be correctly implemented |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 398 | slot->capabilities |= PCISLOT_REPLACE_SUPPORTED; |
| 399 | slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 401 | if (is_slot64bit(slot)) |
| 402 | slot->capabilities |= PCISLOT_64_BIT_SUPPORTED; |
| 403 | if (is_slot66mhz(slot)) |
| 404 | slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | if (ctrl->speed == PCI_SPEED_66MHz) |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 406 | slot->capabilities |= PCISLOT_66_MHZ_OPERATION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 408 | ctrl_slot = |
| 409 | slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | // Check presence |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 412 | slot->capabilities |= |
| 413 | ((((~tempdword) >> 23) | |
| 414 | ((~tempdword) >> 15)) >> ctrl_slot) & 0x02; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | // Check the switch state |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 416 | slot->capabilities |= |
| 417 | ((~tempdword & 0xFF) >> ctrl_slot) & 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | // Check the slot enable |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 419 | slot->capabilities |= |
| 420 | ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | /* register this slot with the hotplug pci core */ |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 423 | hotplug_slot->release = &release_slot; |
| 424 | hotplug_slot->private = slot; |
| 425 | make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot); |
| 426 | hotplug_slot->ops = &cpqphp_hotplug_slot_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 428 | hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot); |
| 429 | hotplug_slot_info->attention_status = |
| 430 | cpq_get_attention_status(ctrl, slot); |
| 431 | hotplug_slot_info->latch_status = |
| 432 | cpq_get_latch_status(ctrl, slot); |
| 433 | hotplug_slot_info->adapter_status = |
| 434 | get_presence_status(ctrl, slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 436 | dbg("registering bus %d, dev %d, number %d, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | "ctrl->slot_device_offset %d, slot %d\n", |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 438 | slot->bus, slot->device, |
| 439 | slot->number, ctrl->slot_device_offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | slot_number); |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 441 | result = pci_hp_register(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | if (result) { |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 443 | err("pci_hp_register failed with error %d\n", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | goto error_name; |
| 445 | } |
| 446 | |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 447 | slot->next = ctrl->slot; |
| 448 | ctrl->slot = slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
| 450 | number_of_slots--; |
| 451 | slot_device++; |
| 452 | slot_number++; |
| 453 | } |
| 454 | |
| 455 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | error_name: |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 457 | kfree(hotplug_slot->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | error_info: |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 459 | kfree(hotplug_slot_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | error_hpslot: |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 461 | kfree(hotplug_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | error_slot: |
Jesper Juhl | efbf62e | 2005-12-11 06:42:18 +0100 | [diff] [blame^] | 463 | kfree(slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | error: |
| 465 | return result; |
| 466 | } |
| 467 | |
| 468 | static int ctrl_slot_cleanup (struct controller * ctrl) |
| 469 | { |
| 470 | struct slot *old_slot, *next_slot; |
| 471 | |
| 472 | old_slot = ctrl->slot; |
| 473 | ctrl->slot = NULL; |
| 474 | |
| 475 | while (old_slot) { |
| 476 | /* memory will be freed by the release_slot callback */ |
| 477 | next_slot = old_slot->next; |
| 478 | pci_hp_deregister (old_slot->hotplug_slot); |
| 479 | old_slot = next_slot; |
| 480 | } |
| 481 | |
| 482 | //Free IRQ associated with hot plug device |
| 483 | free_irq(ctrl->interrupt, ctrl); |
| 484 | //Unmap the memory |
| 485 | iounmap(ctrl->hpc_reg); |
| 486 | //Finally reclaim PCI mem |
| 487 | release_mem_region(pci_resource_start(ctrl->pci_dev, 0), |
| 488 | pci_resource_len(ctrl->pci_dev, 0)); |
| 489 | |
| 490 | return(0); |
| 491 | } |
| 492 | |
| 493 | |
| 494 | //============================================================================ |
| 495 | // function: get_slot_mapping |
| 496 | // |
| 497 | // Description: Attempts to determine a logical slot mapping for a PCI |
| 498 | // device. Won't work for more than one PCI-PCI bridge |
| 499 | // in a slot. |
| 500 | // |
| 501 | // Input: u8 bus_num - bus number of PCI device |
| 502 | // u8 dev_num - device number of PCI device |
| 503 | // u8 *slot - Pointer to u8 where slot number will |
| 504 | // be returned |
| 505 | // |
| 506 | // Output: SUCCESS or FAILURE |
| 507 | //============================================================================= |
| 508 | static int |
| 509 | get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot) |
| 510 | { |
| 511 | struct irq_routing_table *PCIIRQRoutingInfoLength; |
| 512 | u32 work; |
| 513 | long len; |
| 514 | long loop; |
| 515 | |
| 516 | u8 tbus, tdevice, tslot, bridgeSlot; |
| 517 | |
| 518 | dbg("%s: %p, %d, %d, %p\n", __FUNCTION__, bus, bus_num, dev_num, slot); |
| 519 | |
| 520 | bridgeSlot = 0xFF; |
| 521 | |
| 522 | PCIIRQRoutingInfoLength = pcibios_get_irq_routing_table(); |
| 523 | if (!PCIIRQRoutingInfoLength) |
| 524 | return -1; |
| 525 | |
| 526 | len = (PCIIRQRoutingInfoLength->size - |
| 527 | sizeof(struct irq_routing_table)) / sizeof(struct irq_info); |
| 528 | // Make sure I got at least one entry |
| 529 | if (len == 0) { |
| 530 | kfree(PCIIRQRoutingInfoLength); |
| 531 | return -1; |
| 532 | } |
| 533 | |
| 534 | for (loop = 0; loop < len; ++loop) { |
| 535 | tbus = PCIIRQRoutingInfoLength->slots[loop].bus; |
| 536 | tdevice = PCIIRQRoutingInfoLength->slots[loop].devfn >> 3; |
| 537 | tslot = PCIIRQRoutingInfoLength->slots[loop].slot; |
| 538 | |
| 539 | if ((tbus == bus_num) && (tdevice == dev_num)) { |
| 540 | *slot = tslot; |
| 541 | kfree(PCIIRQRoutingInfoLength); |
| 542 | return 0; |
| 543 | } else { |
| 544 | /* Did not get a match on the target PCI device. Check |
| 545 | * if the current IRQ table entry is a PCI-to-PCI bridge |
| 546 | * device. If so, and it's secondary bus matches the |
| 547 | * bus number for the target device, I need to save the |
| 548 | * bridge's slot number. If I can not find an entry for |
| 549 | * the target device, I will have to assume it's on the |
| 550 | * other side of the bridge, and assign it the bridge's |
| 551 | * slot. */ |
| 552 | bus->number = tbus; |
| 553 | pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0), |
| 554 | PCI_REVISION_ID, &work); |
| 555 | |
| 556 | if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) { |
| 557 | pci_bus_read_config_dword(bus, |
| 558 | PCI_DEVFN(tdevice, 0), |
| 559 | PCI_PRIMARY_BUS, &work); |
| 560 | // See if bridge's secondary bus matches target bus. |
| 561 | if (((work >> 8) & 0x000000FF) == (long) bus_num) { |
| 562 | bridgeSlot = tslot; |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | } |
| 568 | |
| 569 | // If we got here, we didn't find an entry in the IRQ mapping table |
| 570 | // for the target PCI device. If we did determine that the target |
| 571 | // device is on the other side of a PCI-to-PCI bridge, return the |
| 572 | // slot number for the bridge. |
| 573 | if (bridgeSlot != 0xFF) { |
| 574 | *slot = bridgeSlot; |
| 575 | kfree(PCIIRQRoutingInfoLength); |
| 576 | return 0; |
| 577 | } |
| 578 | kfree(PCIIRQRoutingInfoLength); |
| 579 | // Couldn't find an entry in the routing table for this PCI device |
| 580 | return -1; |
| 581 | } |
| 582 | |
| 583 | |
| 584 | /** |
| 585 | * cpqhp_set_attention_status - Turns the Amber LED for a slot on or off |
| 586 | * |
| 587 | */ |
| 588 | static int |
| 589 | cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func, |
| 590 | u32 status) |
| 591 | { |
| 592 | u8 hp_slot; |
| 593 | |
| 594 | if (func == NULL) |
| 595 | return(1); |
| 596 | |
| 597 | hp_slot = func->device - ctrl->slot_device_offset; |
| 598 | |
| 599 | // Wait for exclusive access to hardware |
| 600 | down(&ctrl->crit_sect); |
| 601 | |
| 602 | if (status == 1) { |
| 603 | amber_LED_on (ctrl, hp_slot); |
| 604 | } else if (status == 0) { |
| 605 | amber_LED_off (ctrl, hp_slot); |
| 606 | } else { |
| 607 | // Done with exclusive hardware access |
| 608 | up(&ctrl->crit_sect); |
| 609 | return(1); |
| 610 | } |
| 611 | |
| 612 | set_SOGO(ctrl); |
| 613 | |
| 614 | // Wait for SOBS to be unset |
| 615 | wait_for_ctrl_irq (ctrl); |
| 616 | |
| 617 | // Done with exclusive hardware access |
| 618 | up(&ctrl->crit_sect); |
| 619 | |
| 620 | return(0); |
| 621 | } |
| 622 | |
| 623 | |
| 624 | /** |
| 625 | * set_attention_status - Turns the Amber LED for a slot on or off |
| 626 | * |
| 627 | */ |
| 628 | static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status) |
| 629 | { |
| 630 | struct pci_func *slot_func; |
| 631 | struct slot *slot = hotplug_slot->private; |
| 632 | struct controller *ctrl = slot->ctrl; |
| 633 | u8 bus; |
| 634 | u8 devfn; |
| 635 | u8 device; |
| 636 | u8 function; |
| 637 | |
| 638 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 639 | |
| 640 | if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) |
| 641 | return -ENODEV; |
| 642 | |
| 643 | device = devfn >> 3; |
| 644 | function = devfn & 0x7; |
| 645 | dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); |
| 646 | |
| 647 | slot_func = cpqhp_slot_find(bus, device, function); |
| 648 | if (!slot_func) |
| 649 | return -ENODEV; |
| 650 | |
| 651 | return cpqhp_set_attention_status(ctrl, slot_func, status); |
| 652 | } |
| 653 | |
| 654 | |
| 655 | static int process_SI(struct hotplug_slot *hotplug_slot) |
| 656 | { |
| 657 | struct pci_func *slot_func; |
| 658 | struct slot *slot = hotplug_slot->private; |
| 659 | struct controller *ctrl = slot->ctrl; |
| 660 | u8 bus; |
| 661 | u8 devfn; |
| 662 | u8 device; |
| 663 | u8 function; |
| 664 | |
| 665 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 666 | |
| 667 | if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) |
| 668 | return -ENODEV; |
| 669 | |
| 670 | device = devfn >> 3; |
| 671 | function = devfn & 0x7; |
| 672 | dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); |
| 673 | |
| 674 | slot_func = cpqhp_slot_find(bus, device, function); |
| 675 | if (!slot_func) |
| 676 | return -ENODEV; |
| 677 | |
| 678 | slot_func->bus = bus; |
| 679 | slot_func->device = device; |
| 680 | slot_func->function = function; |
| 681 | slot_func->configured = 0; |
| 682 | dbg("board_added(%p, %p)\n", slot_func, ctrl); |
| 683 | return cpqhp_process_SI(ctrl, slot_func); |
| 684 | } |
| 685 | |
| 686 | |
| 687 | static int process_SS(struct hotplug_slot *hotplug_slot) |
| 688 | { |
| 689 | struct pci_func *slot_func; |
| 690 | struct slot *slot = hotplug_slot->private; |
| 691 | struct controller *ctrl = slot->ctrl; |
| 692 | u8 bus; |
| 693 | u8 devfn; |
| 694 | u8 device; |
| 695 | u8 function; |
| 696 | |
| 697 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 698 | |
| 699 | if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1) |
| 700 | return -ENODEV; |
| 701 | |
| 702 | device = devfn >> 3; |
| 703 | function = devfn & 0x7; |
| 704 | dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function); |
| 705 | |
| 706 | slot_func = cpqhp_slot_find(bus, device, function); |
| 707 | if (!slot_func) |
| 708 | return -ENODEV; |
| 709 | |
| 710 | dbg("In %s, slot_func = %p, ctrl = %p\n", __FUNCTION__, slot_func, ctrl); |
| 711 | return cpqhp_process_SS(ctrl, slot_func); |
| 712 | } |
| 713 | |
| 714 | |
| 715 | static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value) |
| 716 | { |
| 717 | struct slot *slot = hotplug_slot->private; |
| 718 | struct controller *ctrl = slot->ctrl; |
| 719 | |
| 720 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 721 | |
| 722 | return cpqhp_hardware_test(ctrl, value); |
| 723 | } |
| 724 | |
| 725 | |
| 726 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 727 | { |
| 728 | struct slot *slot = hotplug_slot->private; |
| 729 | struct controller *ctrl = slot->ctrl; |
| 730 | |
| 731 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 732 | |
| 733 | *value = get_slot_enabled(ctrl, slot); |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 738 | { |
| 739 | struct slot *slot = hotplug_slot->private; |
| 740 | struct controller *ctrl = slot->ctrl; |
| 741 | |
| 742 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 743 | |
| 744 | *value = cpq_get_attention_status(ctrl, slot); |
| 745 | return 0; |
| 746 | } |
| 747 | |
| 748 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 749 | { |
| 750 | struct slot *slot = hotplug_slot->private; |
| 751 | struct controller *ctrl = slot->ctrl; |
| 752 | |
| 753 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 754 | |
| 755 | *value = cpq_get_latch_status(ctrl, slot); |
| 756 | |
| 757 | return 0; |
| 758 | } |
| 759 | |
| 760 | static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 761 | { |
| 762 | struct slot *slot = hotplug_slot->private; |
| 763 | struct controller *ctrl = slot->ctrl; |
| 764 | |
| 765 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 766 | |
| 767 | *value = get_presence_status(ctrl, slot); |
| 768 | |
| 769 | return 0; |
| 770 | } |
| 771 | |
| 772 | static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) |
| 773 | { |
| 774 | struct slot *slot = hotplug_slot->private; |
| 775 | struct controller *ctrl = slot->ctrl; |
| 776 | |
| 777 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 778 | |
| 779 | *value = ctrl->speed_capability; |
| 780 | |
| 781 | return 0; |
| 782 | } |
| 783 | |
| 784 | static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value) |
| 785 | { |
| 786 | struct slot *slot = hotplug_slot->private; |
| 787 | struct controller *ctrl = slot->ctrl; |
| 788 | |
| 789 | dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name); |
| 790 | |
| 791 | *value = ctrl->speed; |
| 792 | |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 797 | { |
| 798 | u8 num_of_slots = 0; |
| 799 | u8 hp_slot = 0; |
| 800 | u8 device; |
| 801 | u8 rev; |
| 802 | u8 bus_cap; |
| 803 | u16 temp_word; |
| 804 | u16 vendor_id; |
| 805 | u16 subsystem_vid; |
| 806 | u16 subsystem_deviceid; |
| 807 | u32 rc; |
| 808 | struct controller *ctrl; |
| 809 | struct pci_func *func; |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 810 | int err; |
| 811 | |
| 812 | err = pci_enable_device(pdev); |
| 813 | if (err) { |
| 814 | printk(KERN_ERR MY_NAME ": cannot enable PCI device %s (%d)\n", |
| 815 | pci_name(pdev), err); |
| 816 | return err; |
| 817 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
| 819 | // Need to read VID early b/c it's used to differentiate CPQ and INTC discovery |
| 820 | rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id); |
| 821 | if (rc || ((vendor_id != PCI_VENDOR_ID_COMPAQ) && (vendor_id != PCI_VENDOR_ID_INTEL))) { |
| 822 | err(msg_HPC_non_compaq_or_intel); |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 823 | rc = -ENODEV; |
| 824 | goto err_disable_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | } |
| 826 | dbg("Vendor ID: %x\n", vendor_id); |
| 827 | |
| 828 | rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); |
| 829 | dbg("revision: %d\n", rev); |
| 830 | if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) { |
| 831 | err(msg_HPC_rev_error); |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 832 | rc = -ENODEV; |
| 833 | goto err_disable_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | /* Check for the proper subsytem ID's |
| 837 | * Intel uses a different SSID programming model than Compaq. |
| 838 | * For Intel, each SSID bit identifies a PHP capability. |
| 839 | * Also Intel HPC's may have RID=0. |
| 840 | */ |
| 841 | if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) { |
| 842 | // TODO: This code can be made to support non-Compaq or Intel subsystem IDs |
| 843 | rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid); |
| 844 | if (rc) { |
| 845 | err("%s : pci_read_config_word failed\n", __FUNCTION__); |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 846 | goto err_disable_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | } |
| 848 | dbg("Subsystem Vendor ID: %x\n", subsystem_vid); |
| 849 | if ((subsystem_vid != PCI_VENDOR_ID_COMPAQ) && (subsystem_vid != PCI_VENDOR_ID_INTEL)) { |
| 850 | err(msg_HPC_non_compaq_or_intel); |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 851 | rc = -ENODEV; |
| 852 | goto err_disable_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL); |
| 856 | if (!ctrl) { |
| 857 | err("%s : out of memory\n", __FUNCTION__); |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 858 | rc = -ENOMEM; |
| 859 | goto err_disable_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | } |
| 861 | memset(ctrl, 0, sizeof(struct controller)); |
| 862 | |
| 863 | rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsystem_deviceid); |
| 864 | if (rc) { |
| 865 | err("%s : pci_read_config_word failed\n", __FUNCTION__); |
| 866 | goto err_free_ctrl; |
| 867 | } |
| 868 | |
| 869 | info("Hot Plug Subsystem Device ID: %x\n", subsystem_deviceid); |
| 870 | |
| 871 | /* Set Vendor ID, so it can be accessed later from other functions */ |
| 872 | ctrl->vendor_id = vendor_id; |
| 873 | |
| 874 | switch (subsystem_vid) { |
| 875 | case PCI_VENDOR_ID_COMPAQ: |
| 876 | if (rev >= 0x13) { /* CIOBX */ |
| 877 | ctrl->push_flag = 1; |
| 878 | ctrl->slot_switch_type = 1; |
| 879 | ctrl->push_button = 1; |
| 880 | ctrl->pci_config_space = 1; |
| 881 | ctrl->defeature_PHP = 1; |
| 882 | ctrl->pcix_support = 1; |
| 883 | ctrl->pcix_speed_capability = 1; |
| 884 | pci_read_config_byte(pdev, 0x41, &bus_cap); |
| 885 | if (bus_cap & 0x80) { |
| 886 | dbg("bus max supports 133MHz PCI-X\n"); |
| 887 | ctrl->speed_capability = PCI_SPEED_133MHz_PCIX; |
| 888 | break; |
| 889 | } |
| 890 | if (bus_cap & 0x40) { |
| 891 | dbg("bus max supports 100MHz PCI-X\n"); |
| 892 | ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; |
| 893 | break; |
| 894 | } |
| 895 | if (bus_cap & 20) { |
| 896 | dbg("bus max supports 66MHz PCI-X\n"); |
| 897 | ctrl->speed_capability = PCI_SPEED_66MHz_PCIX; |
| 898 | break; |
| 899 | } |
| 900 | if (bus_cap & 10) { |
| 901 | dbg("bus max supports 66MHz PCI\n"); |
| 902 | ctrl->speed_capability = PCI_SPEED_66MHz; |
| 903 | break; |
| 904 | } |
| 905 | |
| 906 | break; |
| 907 | } |
| 908 | |
| 909 | switch (subsystem_deviceid) { |
| 910 | case PCI_SUB_HPC_ID: |
| 911 | /* Original 6500/7000 implementation */ |
| 912 | ctrl->slot_switch_type = 1; |
| 913 | ctrl->speed_capability = PCI_SPEED_33MHz; |
| 914 | ctrl->push_button = 0; |
| 915 | ctrl->pci_config_space = 1; |
| 916 | ctrl->defeature_PHP = 1; |
| 917 | ctrl->pcix_support = 0; |
| 918 | ctrl->pcix_speed_capability = 0; |
| 919 | break; |
| 920 | case PCI_SUB_HPC_ID2: |
| 921 | /* First Pushbutton implementation */ |
| 922 | ctrl->push_flag = 1; |
| 923 | ctrl->slot_switch_type = 1; |
| 924 | ctrl->speed_capability = PCI_SPEED_33MHz; |
| 925 | ctrl->push_button = 1; |
| 926 | ctrl->pci_config_space = 1; |
| 927 | ctrl->defeature_PHP = 1; |
| 928 | ctrl->pcix_support = 0; |
| 929 | ctrl->pcix_speed_capability = 0; |
| 930 | break; |
| 931 | case PCI_SUB_HPC_ID_INTC: |
| 932 | /* Third party (6500/7000) */ |
| 933 | ctrl->slot_switch_type = 1; |
| 934 | ctrl->speed_capability = PCI_SPEED_33MHz; |
| 935 | ctrl->push_button = 0; |
| 936 | ctrl->pci_config_space = 1; |
| 937 | ctrl->defeature_PHP = 1; |
| 938 | ctrl->pcix_support = 0; |
| 939 | ctrl->pcix_speed_capability = 0; |
| 940 | break; |
| 941 | case PCI_SUB_HPC_ID3: |
| 942 | /* First 66 Mhz implementation */ |
| 943 | ctrl->push_flag = 1; |
| 944 | ctrl->slot_switch_type = 1; |
| 945 | ctrl->speed_capability = PCI_SPEED_66MHz; |
| 946 | ctrl->push_button = 1; |
| 947 | ctrl->pci_config_space = 1; |
| 948 | ctrl->defeature_PHP = 1; |
| 949 | ctrl->pcix_support = 0; |
| 950 | ctrl->pcix_speed_capability = 0; |
| 951 | break; |
| 952 | case PCI_SUB_HPC_ID4: |
| 953 | /* First PCI-X implementation, 100MHz */ |
| 954 | ctrl->push_flag = 1; |
| 955 | ctrl->slot_switch_type = 1; |
| 956 | ctrl->speed_capability = PCI_SPEED_100MHz_PCIX; |
| 957 | ctrl->push_button = 1; |
| 958 | ctrl->pci_config_space = 1; |
| 959 | ctrl->defeature_PHP = 1; |
| 960 | ctrl->pcix_support = 1; |
| 961 | ctrl->pcix_speed_capability = 0; |
| 962 | break; |
| 963 | default: |
| 964 | err(msg_HPC_not_supported); |
| 965 | rc = -ENODEV; |
| 966 | goto err_free_ctrl; |
| 967 | } |
| 968 | break; |
| 969 | |
| 970 | case PCI_VENDOR_ID_INTEL: |
| 971 | /* Check for speed capability (0=33, 1=66) */ |
| 972 | if (subsystem_deviceid & 0x0001) { |
| 973 | ctrl->speed_capability = PCI_SPEED_66MHz; |
| 974 | } else { |
| 975 | ctrl->speed_capability = PCI_SPEED_33MHz; |
| 976 | } |
| 977 | |
| 978 | /* Check for push button */ |
| 979 | if (subsystem_deviceid & 0x0002) { |
| 980 | /* no push button */ |
| 981 | ctrl->push_button = 0; |
| 982 | } else { |
| 983 | /* push button supported */ |
| 984 | ctrl->push_button = 1; |
| 985 | } |
| 986 | |
| 987 | /* Check for slot switch type (0=mechanical, 1=not mechanical) */ |
| 988 | if (subsystem_deviceid & 0x0004) { |
| 989 | /* no switch */ |
| 990 | ctrl->slot_switch_type = 0; |
| 991 | } else { |
| 992 | /* switch */ |
| 993 | ctrl->slot_switch_type = 1; |
| 994 | } |
| 995 | |
| 996 | /* PHP Status (0=De-feature PHP, 1=Normal operation) */ |
| 997 | if (subsystem_deviceid & 0x0008) { |
| 998 | ctrl->defeature_PHP = 1; // PHP supported |
| 999 | } else { |
| 1000 | ctrl->defeature_PHP = 0; // PHP not supported |
| 1001 | } |
| 1002 | |
| 1003 | /* Alternate Base Address Register Interface (0=not supported, 1=supported) */ |
| 1004 | if (subsystem_deviceid & 0x0010) { |
| 1005 | ctrl->alternate_base_address = 1; // supported |
| 1006 | } else { |
| 1007 | ctrl->alternate_base_address = 0; // not supported |
| 1008 | } |
| 1009 | |
| 1010 | /* PCI Config Space Index (0=not supported, 1=supported) */ |
| 1011 | if (subsystem_deviceid & 0x0020) { |
| 1012 | ctrl->pci_config_space = 1; // supported |
| 1013 | } else { |
| 1014 | ctrl->pci_config_space = 0; // not supported |
| 1015 | } |
| 1016 | |
| 1017 | /* PCI-X support */ |
| 1018 | if (subsystem_deviceid & 0x0080) { |
| 1019 | /* PCI-X capable */ |
| 1020 | ctrl->pcix_support = 1; |
| 1021 | /* Frequency of operation in PCI-X mode */ |
| 1022 | if (subsystem_deviceid & 0x0040) { |
| 1023 | /* 133MHz PCI-X if bit 7 is 1 */ |
| 1024 | ctrl->pcix_speed_capability = 1; |
| 1025 | } else { |
| 1026 | /* 100MHz PCI-X if bit 7 is 1 and bit 0 is 0, */ |
| 1027 | /* 66MHz PCI-X if bit 7 is 1 and bit 0 is 1 */ |
| 1028 | ctrl->pcix_speed_capability = 0; |
| 1029 | } |
| 1030 | } else { |
| 1031 | /* Conventional PCI */ |
| 1032 | ctrl->pcix_support = 0; |
| 1033 | ctrl->pcix_speed_capability = 0; |
| 1034 | } |
| 1035 | break; |
| 1036 | |
| 1037 | default: |
| 1038 | err(msg_HPC_not_supported); |
| 1039 | rc = -ENODEV; |
| 1040 | goto err_free_ctrl; |
| 1041 | } |
| 1042 | |
| 1043 | } else { |
| 1044 | err(msg_HPC_not_supported); |
| 1045 | return -ENODEV; |
| 1046 | } |
| 1047 | |
| 1048 | // Tell the user that we found one. |
| 1049 | info("Initializing the PCI hot plug controller residing on PCI bus %d\n", |
| 1050 | pdev->bus->number); |
| 1051 | |
| 1052 | dbg("Hotplug controller capabilities:\n"); |
| 1053 | dbg(" speed_capability %d\n", ctrl->speed_capability); |
| 1054 | dbg(" slot_switch_type %s\n", ctrl->slot_switch_type ? |
| 1055 | "switch present" : "no switch"); |
| 1056 | dbg(" defeature_PHP %s\n", ctrl->defeature_PHP ? |
| 1057 | "PHP supported" : "PHP not supported"); |
| 1058 | dbg(" alternate_base_address %s\n", ctrl->alternate_base_address ? |
| 1059 | "supported" : "not supported"); |
| 1060 | dbg(" pci_config_space %s\n", ctrl->pci_config_space ? |
| 1061 | "supported" : "not supported"); |
| 1062 | dbg(" pcix_speed_capability %s\n", ctrl->pcix_speed_capability ? |
| 1063 | "supported" : "not supported"); |
| 1064 | dbg(" pcix_support %s\n", ctrl->pcix_support ? |
| 1065 | "supported" : "not supported"); |
| 1066 | |
| 1067 | ctrl->pci_dev = pdev; |
| 1068 | pci_set_drvdata(pdev, ctrl); |
| 1069 | |
| 1070 | /* make our own copy of the pci bus structure, |
| 1071 | * as we like tweaking it a lot */ |
| 1072 | ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); |
| 1073 | if (!ctrl->pci_bus) { |
| 1074 | err("out of memory\n"); |
| 1075 | rc = -ENOMEM; |
| 1076 | goto err_free_ctrl; |
| 1077 | } |
| 1078 | memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus)); |
| 1079 | |
| 1080 | ctrl->bus = pdev->bus->number; |
| 1081 | ctrl->rev = rev; |
| 1082 | dbg("bus device function rev: %d %d %d %d\n", ctrl->bus, |
| 1083 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev); |
| 1084 | |
| 1085 | init_MUTEX(&ctrl->crit_sect); |
| 1086 | init_waitqueue_head(&ctrl->queue); |
| 1087 | |
| 1088 | /* initialize our threads if they haven't already been started up */ |
| 1089 | rc = one_time_init(); |
| 1090 | if (rc) { |
| 1091 | goto err_free_bus; |
| 1092 | } |
| 1093 | |
| 1094 | dbg("pdev = %p\n", pdev); |
| 1095 | dbg("pci resource start %lx\n", pci_resource_start(pdev, 0)); |
| 1096 | dbg("pci resource len %lx\n", pci_resource_len(pdev, 0)); |
| 1097 | |
| 1098 | if (!request_mem_region(pci_resource_start(pdev, 0), |
| 1099 | pci_resource_len(pdev, 0), MY_NAME)) { |
| 1100 | err("cannot reserve MMIO region\n"); |
| 1101 | rc = -ENOMEM; |
| 1102 | goto err_free_bus; |
| 1103 | } |
| 1104 | |
| 1105 | ctrl->hpc_reg = ioremap(pci_resource_start(pdev, 0), |
| 1106 | pci_resource_len(pdev, 0)); |
| 1107 | if (!ctrl->hpc_reg) { |
| 1108 | err("cannot remap MMIO region %lx @ %lx\n", |
| 1109 | pci_resource_len(pdev, 0), |
| 1110 | pci_resource_start(pdev, 0)); |
| 1111 | rc = -ENODEV; |
| 1112 | goto err_free_mem_region; |
| 1113 | } |
| 1114 | |
| 1115 | // Check for 66Mhz operation |
| 1116 | ctrl->speed = get_controller_speed(ctrl); |
| 1117 | |
| 1118 | |
| 1119 | /******************************************************** |
| 1120 | * |
| 1121 | * Save configuration headers for this and |
| 1122 | * subordinate PCI buses |
| 1123 | * |
| 1124 | ********************************************************/ |
| 1125 | |
| 1126 | // find the physical slot number of the first hot plug slot |
| 1127 | |
| 1128 | /* Get slot won't work for devices behind bridges, but |
| 1129 | * in this case it will always be called for the "base" |
| 1130 | * bus/dev/func of a slot. |
| 1131 | * CS: this is leveraging the PCIIRQ routing code from the kernel |
| 1132 | * (pci-pc.c: get_irq_routing_table) */ |
| 1133 | rc = get_slot_mapping(ctrl->pci_bus, pdev->bus->number, |
| 1134 | (readb(ctrl->hpc_reg + SLOT_MASK) >> 4), |
| 1135 | &(ctrl->first_slot)); |
| 1136 | dbg("get_slot_mapping: first_slot = %d, returned = %d\n", |
| 1137 | ctrl->first_slot, rc); |
| 1138 | if (rc) { |
| 1139 | err(msg_initialization_err, rc); |
| 1140 | goto err_iounmap; |
| 1141 | } |
| 1142 | |
| 1143 | // Store PCI Config Space for all devices on this bus |
| 1144 | rc = cpqhp_save_config(ctrl, ctrl->bus, readb(ctrl->hpc_reg + SLOT_MASK)); |
| 1145 | if (rc) { |
| 1146 | err("%s: unable to save PCI configuration data, error %d\n", |
| 1147 | __FUNCTION__, rc); |
| 1148 | goto err_iounmap; |
| 1149 | } |
| 1150 | |
| 1151 | /* |
| 1152 | * Get IO, memory, and IRQ resources for new devices |
| 1153 | */ |
| 1154 | // The next line is required for cpqhp_find_available_resources |
| 1155 | ctrl->interrupt = pdev->irq; |
| 1156 | if (ctrl->interrupt < 0x10) { |
| 1157 | cpqhp_legacy_mode = 1; |
| 1158 | dbg("System seems to be configured for Full Table Mapped MPS mode\n"); |
| 1159 | } |
| 1160 | |
| 1161 | ctrl->cfgspc_irq = 0; |
| 1162 | pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &ctrl->cfgspc_irq); |
| 1163 | |
| 1164 | rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start); |
| 1165 | ctrl->add_support = !rc; |
| 1166 | if (rc) { |
| 1167 | dbg("cpqhp_find_available_resources = 0x%x\n", rc); |
| 1168 | err("unable to locate PCI configuration resources for hot plug add.\n"); |
| 1169 | goto err_iounmap; |
| 1170 | } |
| 1171 | |
| 1172 | /* |
| 1173 | * Finish setting up the hot plug ctrl device |
| 1174 | */ |
| 1175 | ctrl->slot_device_offset = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; |
| 1176 | dbg("NumSlots %d \n", ctrl->slot_device_offset); |
| 1177 | |
| 1178 | ctrl->next_event = 0; |
| 1179 | |
| 1180 | /* Setup the slot information structures */ |
| 1181 | rc = ctrl_slot_setup(ctrl, smbios_start, smbios_table); |
| 1182 | if (rc) { |
| 1183 | err(msg_initialization_err, 6); |
| 1184 | err("%s: unable to save PCI configuration data, error %d\n", |
| 1185 | __FUNCTION__, rc); |
| 1186 | goto err_iounmap; |
| 1187 | } |
| 1188 | |
| 1189 | /* Mask all general input interrupts */ |
| 1190 | writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_MASK); |
| 1191 | |
| 1192 | /* set up the interrupt */ |
| 1193 | dbg("HPC interrupt = %d \n", ctrl->interrupt); |
| 1194 | if (request_irq(ctrl->interrupt, cpqhp_ctrl_intr, |
| 1195 | SA_SHIRQ, MY_NAME, ctrl)) { |
| 1196 | err("Can't get irq %d for the hotplug pci controller\n", |
| 1197 | ctrl->interrupt); |
| 1198 | rc = -ENODEV; |
| 1199 | goto err_iounmap; |
| 1200 | } |
| 1201 | |
| 1202 | /* Enable Shift Out interrupt and clear it, also enable SERR on power fault */ |
| 1203 | temp_word = readw(ctrl->hpc_reg + MISC); |
| 1204 | temp_word |= 0x4006; |
| 1205 | writew(temp_word, ctrl->hpc_reg + MISC); |
| 1206 | |
| 1207 | // Changed 05/05/97 to clear all interrupts at start |
| 1208 | writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 1209 | |
| 1210 | ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); |
| 1211 | |
| 1212 | writel(0x0L, ctrl->hpc_reg + INT_MASK); |
| 1213 | |
| 1214 | if (!cpqhp_ctrl_list) { |
| 1215 | cpqhp_ctrl_list = ctrl; |
| 1216 | ctrl->next = NULL; |
| 1217 | } else { |
| 1218 | ctrl->next = cpqhp_ctrl_list; |
| 1219 | cpqhp_ctrl_list = ctrl; |
| 1220 | } |
| 1221 | |
| 1222 | // turn off empty slots here unless command line option "ON" set |
| 1223 | // Wait for exclusive access to hardware |
| 1224 | down(&ctrl->crit_sect); |
| 1225 | |
| 1226 | num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F; |
| 1227 | |
| 1228 | // find first device number for the ctrl |
| 1229 | device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4; |
| 1230 | |
| 1231 | while (num_of_slots) { |
| 1232 | dbg("num_of_slots: %d\n", num_of_slots); |
| 1233 | func = cpqhp_slot_find(ctrl->bus, device, 0); |
| 1234 | if (!func) |
| 1235 | break; |
| 1236 | |
| 1237 | hp_slot = func->device - ctrl->slot_device_offset; |
| 1238 | dbg("hp_slot: %d\n", hp_slot); |
| 1239 | |
| 1240 | // We have to save the presence info for these slots |
| 1241 | temp_word = ctrl->ctrl_int_comp >> 16; |
| 1242 | func->presence_save = (temp_word >> hp_slot) & 0x01; |
| 1243 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; |
| 1244 | |
| 1245 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { |
| 1246 | func->switch_save = 0; |
| 1247 | } else { |
| 1248 | func->switch_save = 0x10; |
| 1249 | } |
| 1250 | |
| 1251 | if (!power_mode) { |
| 1252 | if (!func->is_a_board) { |
| 1253 | green_LED_off(ctrl, hp_slot); |
| 1254 | slot_disable(ctrl, hp_slot); |
| 1255 | } |
| 1256 | } |
| 1257 | |
| 1258 | device++; |
| 1259 | num_of_slots--; |
| 1260 | } |
| 1261 | |
| 1262 | if (!power_mode) { |
| 1263 | set_SOGO(ctrl); |
| 1264 | // Wait for SOBS to be unset |
| 1265 | wait_for_ctrl_irq(ctrl); |
| 1266 | } |
| 1267 | |
| 1268 | rc = init_SERR(ctrl); |
| 1269 | if (rc) { |
| 1270 | err("init_SERR failed\n"); |
| 1271 | up(&ctrl->crit_sect); |
| 1272 | goto err_free_irq; |
| 1273 | } |
| 1274 | |
| 1275 | // Done with exclusive hardware access |
| 1276 | up(&ctrl->crit_sect); |
| 1277 | |
| 1278 | cpqhp_create_ctrl_files(ctrl); |
| 1279 | |
| 1280 | return 0; |
| 1281 | |
| 1282 | err_free_irq: |
| 1283 | free_irq(ctrl->interrupt, ctrl); |
| 1284 | err_iounmap: |
| 1285 | iounmap(ctrl->hpc_reg); |
| 1286 | err_free_mem_region: |
| 1287 | release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 1288 | err_free_bus: |
| 1289 | kfree(ctrl->pci_bus); |
| 1290 | err_free_ctrl: |
| 1291 | kfree(ctrl); |
Bjorn Helgaas | fe89cf4 | 2005-09-28 14:03:08 -0600 | [diff] [blame] | 1292 | err_disable_device: |
| 1293 | pci_disable_device(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | return rc; |
| 1295 | } |
| 1296 | |
| 1297 | |
| 1298 | static int one_time_init(void) |
| 1299 | { |
| 1300 | int loop; |
| 1301 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | |
| 1303 | if (initialized) |
| 1304 | return 0; |
| 1305 | |
| 1306 | power_mode = 0; |
| 1307 | |
| 1308 | retval = pci_print_IRQ_route(); |
| 1309 | if (retval) |
| 1310 | goto error; |
| 1311 | |
| 1312 | dbg("Initialize + Start the notification mechanism \n"); |
| 1313 | |
| 1314 | retval = cpqhp_event_start_thread(); |
| 1315 | if (retval) |
| 1316 | goto error; |
| 1317 | |
| 1318 | dbg("Initialize slot lists\n"); |
| 1319 | for (loop = 0; loop < 256; loop++) { |
| 1320 | cpqhp_slot_list[loop] = NULL; |
| 1321 | } |
| 1322 | |
| 1323 | // FIXME: We also need to hook the NMI handler eventually. |
| 1324 | // this also needs to be worked with Christoph |
| 1325 | // register_NMI_handler(); |
| 1326 | |
| 1327 | // Map rom address |
| 1328 | cpqhp_rom_start = ioremap(ROM_PHY_ADDR, ROM_PHY_LEN); |
| 1329 | if (!cpqhp_rom_start) { |
| 1330 | err ("Could not ioremap memory region for ROM\n"); |
| 1331 | retval = -EIO; |
| 1332 | goto error; |
| 1333 | } |
| 1334 | |
| 1335 | /* Now, map the int15 entry point if we are on compaq specific hardware */ |
| 1336 | compaq_nvram_init(cpqhp_rom_start); |
| 1337 | |
| 1338 | /* Map smbios table entry point structure */ |
| 1339 | smbios_table = detect_SMBIOS_pointer(cpqhp_rom_start, |
| 1340 | cpqhp_rom_start + ROM_PHY_LEN); |
| 1341 | if (!smbios_table) { |
| 1342 | err ("Could not find the SMBIOS pointer in memory\n"); |
| 1343 | retval = -EIO; |
| 1344 | goto error_rom_start; |
| 1345 | } |
| 1346 | |
| 1347 | smbios_start = ioremap(readl(smbios_table + ST_ADDRESS), |
| 1348 | readw(smbios_table + ST_LENGTH)); |
| 1349 | if (!smbios_start) { |
| 1350 | err ("Could not ioremap memory region taken from SMBIOS values\n"); |
| 1351 | retval = -EIO; |
| 1352 | goto error_smbios_start; |
| 1353 | } |
| 1354 | |
| 1355 | initialized = 1; |
| 1356 | |
| 1357 | return retval; |
| 1358 | |
| 1359 | error_smbios_start: |
| 1360 | iounmap(smbios_start); |
| 1361 | error_rom_start: |
| 1362 | iounmap(cpqhp_rom_start); |
| 1363 | error: |
| 1364 | return retval; |
| 1365 | } |
| 1366 | |
| 1367 | |
| 1368 | static void __exit unload_cpqphpd(void) |
| 1369 | { |
| 1370 | struct pci_func *next; |
| 1371 | struct pci_func *TempSlot; |
| 1372 | int loop; |
| 1373 | u32 rc; |
| 1374 | struct controller *ctrl; |
| 1375 | struct controller *tctrl; |
| 1376 | struct pci_resource *res; |
| 1377 | struct pci_resource *tres; |
| 1378 | |
| 1379 | rc = compaq_nvram_store(cpqhp_rom_start); |
| 1380 | |
| 1381 | ctrl = cpqhp_ctrl_list; |
| 1382 | |
| 1383 | while (ctrl) { |
| 1384 | if (ctrl->hpc_reg) { |
| 1385 | u16 misc; |
| 1386 | rc = read_slot_enable (ctrl); |
| 1387 | |
| 1388 | writeb(0, ctrl->hpc_reg + SLOT_SERR); |
| 1389 | writel(0xFFFFFFC0L | ~rc, ctrl->hpc_reg + INT_MASK); |
| 1390 | |
| 1391 | misc = readw(ctrl->hpc_reg + MISC); |
| 1392 | misc &= 0xFFFD; |
| 1393 | writew(misc, ctrl->hpc_reg + MISC); |
| 1394 | } |
| 1395 | |
| 1396 | ctrl_slot_cleanup(ctrl); |
| 1397 | |
| 1398 | res = ctrl->io_head; |
| 1399 | while (res) { |
| 1400 | tres = res; |
| 1401 | res = res->next; |
| 1402 | kfree(tres); |
| 1403 | } |
| 1404 | |
| 1405 | res = ctrl->mem_head; |
| 1406 | while (res) { |
| 1407 | tres = res; |
| 1408 | res = res->next; |
| 1409 | kfree(tres); |
| 1410 | } |
| 1411 | |
| 1412 | res = ctrl->p_mem_head; |
| 1413 | while (res) { |
| 1414 | tres = res; |
| 1415 | res = res->next; |
| 1416 | kfree(tres); |
| 1417 | } |
| 1418 | |
| 1419 | res = ctrl->bus_head; |
| 1420 | while (res) { |
| 1421 | tres = res; |
| 1422 | res = res->next; |
| 1423 | kfree(tres); |
| 1424 | } |
| 1425 | |
| 1426 | kfree (ctrl->pci_bus); |
| 1427 | |
| 1428 | tctrl = ctrl; |
| 1429 | ctrl = ctrl->next; |
| 1430 | kfree(tctrl); |
| 1431 | } |
| 1432 | |
| 1433 | for (loop = 0; loop < 256; loop++) { |
| 1434 | next = cpqhp_slot_list[loop]; |
| 1435 | while (next != NULL) { |
| 1436 | res = next->io_head; |
| 1437 | while (res) { |
| 1438 | tres = res; |
| 1439 | res = res->next; |
| 1440 | kfree(tres); |
| 1441 | } |
| 1442 | |
| 1443 | res = next->mem_head; |
| 1444 | while (res) { |
| 1445 | tres = res; |
| 1446 | res = res->next; |
| 1447 | kfree(tres); |
| 1448 | } |
| 1449 | |
| 1450 | res = next->p_mem_head; |
| 1451 | while (res) { |
| 1452 | tres = res; |
| 1453 | res = res->next; |
| 1454 | kfree(tres); |
| 1455 | } |
| 1456 | |
| 1457 | res = next->bus_head; |
| 1458 | while (res) { |
| 1459 | tres = res; |
| 1460 | res = res->next; |
| 1461 | kfree(tres); |
| 1462 | } |
| 1463 | |
| 1464 | TempSlot = next; |
| 1465 | next = next->next; |
| 1466 | kfree(TempSlot); |
| 1467 | } |
| 1468 | } |
| 1469 | |
| 1470 | // Stop the notification mechanism |
Keith Moore | 4002307 | 2005-06-02 12:42:37 +0200 | [diff] [blame] | 1471 | if (initialized) |
| 1472 | cpqhp_event_stop_thread(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | |
| 1474 | //unmap the rom address |
| 1475 | if (cpqhp_rom_start) |
| 1476 | iounmap(cpqhp_rom_start); |
| 1477 | if (smbios_start) |
| 1478 | iounmap(smbios_start); |
| 1479 | } |
| 1480 | |
| 1481 | |
| 1482 | |
| 1483 | static struct pci_device_id hpcd_pci_tbl[] = { |
| 1484 | { |
| 1485 | /* handle any PCI Hotplug controller */ |
| 1486 | .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00), |
| 1487 | .class_mask = ~0, |
| 1488 | |
| 1489 | /* no matter who makes it */ |
| 1490 | .vendor = PCI_ANY_ID, |
| 1491 | .device = PCI_ANY_ID, |
| 1492 | .subvendor = PCI_ANY_ID, |
| 1493 | .subdevice = PCI_ANY_ID, |
| 1494 | |
| 1495 | }, { /* end: all zeroes */ } |
| 1496 | }; |
| 1497 | |
| 1498 | MODULE_DEVICE_TABLE(pci, hpcd_pci_tbl); |
| 1499 | |
| 1500 | |
| 1501 | |
| 1502 | static struct pci_driver cpqhpc_driver = { |
| 1503 | .name = "compaq_pci_hotplug", |
| 1504 | .id_table = hpcd_pci_tbl, |
| 1505 | .probe = cpqhpc_probe, |
| 1506 | /* remove: cpqhpc_remove_one, */ |
| 1507 | }; |
| 1508 | |
| 1509 | |
| 1510 | |
| 1511 | static int __init cpqhpc_init(void) |
| 1512 | { |
| 1513 | int result; |
| 1514 | |
| 1515 | cpqhp_debug = debug; |
| 1516 | |
| 1517 | info (DRIVER_DESC " version: " DRIVER_VERSION "\n"); |
| 1518 | result = pci_register_driver(&cpqhpc_driver); |
| 1519 | dbg("pci_register_driver = %d\n", result); |
| 1520 | return result; |
| 1521 | } |
| 1522 | |
| 1523 | |
| 1524 | static void __exit cpqhpc_cleanup(void) |
| 1525 | { |
| 1526 | dbg("unload_cpqphpd()\n"); |
| 1527 | unload_cpqphpd(); |
| 1528 | |
| 1529 | dbg("pci_unregister_driver\n"); |
| 1530 | pci_unregister_driver(&cpqhpc_driver); |
| 1531 | } |
| 1532 | |
| 1533 | |
| 1534 | module_init(cpqhpc_init); |
| 1535 | module_exit(cpqhpc_cleanup); |
| 1536 | |
| 1537 | |