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/proc_fs.h> |
| 35 | #include <linux/pci.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 36 | #include <linux/pci_hotplug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include "../pci.h" |
| 38 | #include "cpqphp.h" |
| 39 | #include "cpqphp_nvram.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | |
| 42 | u8 cpqhp_nic_irq; |
| 43 | u8 cpqhp_disk_irq; |
| 44 | |
| 45 | static u16 unused_IRQ; |
| 46 | |
| 47 | /* |
| 48 | * detect_HRT_floating_pointer |
| 49 | * |
| 50 | * find the Hot Plug Resource Table in the specified region of memory. |
| 51 | * |
| 52 | */ |
| 53 | static void __iomem *detect_HRT_floating_pointer(void __iomem *begin, void __iomem *end) |
| 54 | { |
| 55 | void __iomem *fp; |
| 56 | void __iomem *endp; |
| 57 | u8 temp1, temp2, temp3, temp4; |
| 58 | int status = 0; |
| 59 | |
| 60 | endp = (end - sizeof(struct hrt) + 1); |
| 61 | |
| 62 | for (fp = begin; fp <= endp; fp += 16) { |
| 63 | temp1 = readb(fp + SIG0); |
| 64 | temp2 = readb(fp + SIG1); |
| 65 | temp3 = readb(fp + SIG2); |
| 66 | temp4 = readb(fp + SIG3); |
| 67 | if (temp1 == '$' && |
| 68 | temp2 == 'H' && |
| 69 | temp3 == 'R' && |
| 70 | temp4 == 'T') { |
| 71 | status = 1; |
| 72 | break; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | if (!status) |
| 77 | fp = NULL; |
| 78 | |
| 79 | dbg("Discovered Hotplug Resource Table at %p\n", fp); |
| 80 | return fp; |
| 81 | } |
| 82 | |
| 83 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 84 | int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | { |
| 86 | unsigned char bus; |
| 87 | struct pci_bus *child; |
| 88 | int num; |
| 89 | |
| 90 | if (func->pci_dev == NULL) |
| 91 | func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function)); |
| 92 | |
| 93 | /* No pci device, we need to create it then */ |
| 94 | if (func->pci_dev == NULL) { |
| 95 | dbg("INFO: pci_dev still null\n"); |
| 96 | |
| 97 | num = pci_scan_slot(ctrl->pci_dev->bus, PCI_DEVFN(func->device, func->function)); |
| 98 | if (num) |
| 99 | pci_bus_add_devices(ctrl->pci_dev->bus); |
| 100 | |
| 101 | func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function)); |
| 102 | if (func->pci_dev == NULL) { |
| 103 | dbg("ERROR: pci_dev still null\n"); |
| 104 | return 0; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | if (func->pci_dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) { |
| 109 | pci_read_config_byte(func->pci_dev, PCI_SECONDARY_BUS, &bus); |
| 110 | child = (struct pci_bus*) pci_add_new_bus(func->pci_dev->bus, (func->pci_dev), bus); |
| 111 | pci_do_scan_bus(child); |
| 112 | } |
| 113 | |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 118 | int cpqhp_unconfigure_device(struct pci_func* func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | { |
| 120 | int j; |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 121 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 122 | dbg("%s: bus/dev/func = %x/%x/%x\n", __func__, func->bus, func->device, func->function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | for (j=0; j<8 ; j++) { |
| 125 | struct pci_dev* temp = pci_find_slot(func->bus, PCI_DEVFN(func->device, j)); |
| 126 | if (temp) |
| 127 | pci_remove_bus_device(temp); |
| 128 | } |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | static int PCI_RefinedAccessConfig(struct pci_bus *bus, unsigned int devfn, u8 offset, u32 *value) |
| 133 | { |
| 134 | u32 vendID = 0; |
| 135 | |
| 136 | if (pci_bus_read_config_dword (bus, devfn, PCI_VENDOR_ID, &vendID) == -1) |
| 137 | return -1; |
| 138 | if (vendID == 0xffffffff) |
| 139 | return -1; |
| 140 | return pci_bus_read_config_dword (bus, devfn, offset, value); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | /* |
| 145 | * cpqhp_set_irq |
| 146 | * |
| 147 | * @bus_num: bus number of PCI device |
| 148 | * @dev_num: device number of PCI device |
| 149 | * @slot: pointer to u8 where slot number will be returned |
| 150 | */ |
| 151 | int cpqhp_set_irq (u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num) |
| 152 | { |
| 153 | int rc = 0; |
| 154 | |
| 155 | if (cpqhp_legacy_mode) { |
| 156 | struct pci_dev *fakedev; |
| 157 | struct pci_bus *fakebus; |
| 158 | u16 temp_word; |
| 159 | |
| 160 | fakedev = kmalloc(sizeof(*fakedev), GFP_KERNEL); |
| 161 | fakebus = kmalloc(sizeof(*fakebus), GFP_KERNEL); |
| 162 | if (!fakedev || !fakebus) { |
| 163 | kfree(fakedev); |
| 164 | kfree(fakebus); |
| 165 | return -ENOMEM; |
| 166 | } |
| 167 | |
| 168 | fakedev->devfn = dev_num << 3; |
| 169 | fakedev->bus = fakebus; |
| 170 | fakebus->number = bus_num; |
| 171 | dbg("%s: dev %d, bus %d, pin %d, num %d\n", |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 172 | __func__, dev_num, bus_num, int_pin, irq_num); |
Bjorn Helgaas | 98d3333 | 2008-12-09 16:11:41 -0700 | [diff] [blame] | 173 | rc = pcibios_set_irq_routing(fakedev, int_pin - 1, irq_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | kfree(fakedev); |
| 175 | kfree(fakebus); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 176 | dbg("%s: rc %d\n", __func__, rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | if (!rc) |
| 178 | return !rc; |
| 179 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 180 | /* set the Edge Level Control Register (ELCR) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | temp_word = inb(0x4d0); |
| 182 | temp_word |= inb(0x4d1) << 8; |
| 183 | |
| 184 | temp_word |= 0x01 << irq_num; |
| 185 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 186 | /* This should only be for x86 as it sets the Edge Level |
| 187 | * Control Register |
| 188 | */ |
| 189 | outb((u8) (temp_word & 0xFF), 0x4d0); outb((u8) ((temp_word & |
| 190 | 0xFF00) >> 8), 0x4d1); rc = 0; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
| 192 | return rc; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | /* |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 197 | * WTF??? This function isn't in the code, yet a function calls it, but the |
| 198 | * compiler optimizes it away? strange. Here as a placeholder to keep the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | * compiler happy. |
| 200 | */ |
| 201 | static int PCI_ScanBusNonBridge (u8 bus, u8 device) |
| 202 | { |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 * dev_num) |
| 207 | { |
| 208 | u16 tdevice; |
| 209 | u32 work; |
| 210 | u8 tbus; |
| 211 | |
| 212 | ctrl->pci_bus->number = bus_num; |
| 213 | |
| 214 | for (tdevice = 0; tdevice < 0xFF; tdevice++) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 215 | /* Scan for access first */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | if (PCI_RefinedAccessConfig(ctrl->pci_bus, tdevice, 0x08, &work) == -1) |
| 217 | continue; |
| 218 | dbg("Looking for nonbridge bus_num %d dev_num %d\n", bus_num, tdevice); |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 219 | /* Yep we got one. Not a bridge ? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | if ((work >> 8) != PCI_TO_PCI_BRIDGE_CLASS) { |
| 221 | *dev_num = tdevice; |
| 222 | dbg("found it !\n"); |
| 223 | return 0; |
| 224 | } |
| 225 | } |
| 226 | for (tdevice = 0; tdevice < 0xFF; tdevice++) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 227 | /* Scan for access first */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | if (PCI_RefinedAccessConfig(ctrl->pci_bus, tdevice, 0x08, &work) == -1) |
| 229 | continue; |
| 230 | dbg("Looking for bridge bus_num %d dev_num %d\n", bus_num, tdevice); |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 231 | /* Yep we got one. bridge ? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) { |
| 233 | pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(tdevice, 0), PCI_SECONDARY_BUS, &tbus); |
| 234 | dbg("Recurse on bus_num %d tdevice %d\n", tbus, tdevice); |
| 235 | if (PCI_ScanBusNonBridge(tbus, tdevice) == 0) |
| 236 | return 0; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | return -1; |
| 241 | } |
| 242 | |
| 243 | |
| 244 | static int PCI_GetBusDevHelper(struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot, u8 nobridge) |
| 245 | { |
Alex Chiang | b019ee6 | 2009-03-31 09:24:02 -0600 | [diff] [blame^] | 246 | int loop, len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | u32 work; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | u8 tbus, tdevice, tslot; |
| 249 | |
Alex Chiang | b019ee6 | 2009-03-31 09:24:02 -0600 | [diff] [blame^] | 250 | len = cpqhp_routing_table_length(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | for (loop = 0; loop < len; ++loop) { |
Alex Chiang | b019ee6 | 2009-03-31 09:24:02 -0600 | [diff] [blame^] | 252 | tbus = cpqhp_routing_table->slots[loop].bus; |
| 253 | tdevice = cpqhp_routing_table->slots[loop].devfn; |
| 254 | tslot = cpqhp_routing_table->slots[loop].slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | if (tslot == slot) { |
| 257 | *bus_num = tbus; |
| 258 | *dev_num = tdevice; |
| 259 | ctrl->pci_bus->number = tbus; |
| 260 | pci_bus_read_config_dword (ctrl->pci_bus, *dev_num, PCI_VENDOR_ID, &work); |
Alex Chiang | b019ee6 | 2009-03-31 09:24:02 -0600 | [diff] [blame^] | 261 | if (!nobridge || (work == 0xffffffff)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
| 264 | dbg("bus_num %d devfn %d\n", *bus_num, *dev_num); |
| 265 | pci_bus_read_config_dword (ctrl->pci_bus, *dev_num, PCI_CLASS_REVISION, &work); |
| 266 | dbg("work >> 8 (%x) = BRIDGE (%x)\n", work >> 8, PCI_TO_PCI_BRIDGE_CLASS); |
| 267 | |
| 268 | if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) { |
| 269 | pci_bus_read_config_byte (ctrl->pci_bus, *dev_num, PCI_SECONDARY_BUS, &tbus); |
| 270 | dbg("Scan bus for Non Bridge: bus %d\n", tbus); |
| 271 | if (PCI_ScanBusForNonBridge(ctrl, tbus, dev_num) == 0) { |
| 272 | *bus_num = tbus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | return 0; |
| 274 | } |
Alex Chiang | b019ee6 | 2009-03-31 09:24:02 -0600 | [diff] [blame^] | 275 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | } |
| 278 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | return -1; |
| 280 | } |
| 281 | |
| 282 | |
| 283 | int cpqhp_get_bus_dev (struct controller *ctrl, u8 * bus_num, u8 * dev_num, u8 slot) |
| 284 | { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 285 | /* plain (bridges allowed) */ |
| 286 | return PCI_GetBusDevHelper(ctrl, bus_num, dev_num, slot, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 290 | /* More PCI configuration routines; this time centered around hotplug |
| 291 | * controller |
| 292 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
| 294 | |
| 295 | /* |
| 296 | * cpqhp_save_config |
| 297 | * |
| 298 | * Reads configuration for all slots in a PCI bus and saves info. |
| 299 | * |
| 300 | * Note: For non-hot plug busses, the slot # saved is the device # |
| 301 | * |
| 302 | * returns 0 if success |
| 303 | */ |
| 304 | int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug) |
| 305 | { |
| 306 | long rc; |
| 307 | u8 class_code; |
| 308 | u8 header_type; |
| 309 | u32 ID; |
| 310 | u8 secondary_bus; |
| 311 | struct pci_func *new_slot; |
| 312 | int sub_bus; |
| 313 | int FirstSupported; |
| 314 | int LastSupported; |
| 315 | int max_functions; |
| 316 | int function; |
| 317 | u8 DevError; |
| 318 | int device = 0; |
| 319 | int cloop = 0; |
| 320 | int stop_it; |
| 321 | int index; |
| 322 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 323 | /* Decide which slots are supported */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
| 325 | if (is_hot_plug) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 326 | /* |
| 327 | * is_hot_plug is the slot mask |
| 328 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | FirstSupported = is_hot_plug >> 4; |
| 330 | LastSupported = FirstSupported + (is_hot_plug & 0x0F) - 1; |
| 331 | } else { |
| 332 | FirstSupported = 0; |
| 333 | LastSupported = 0x1F; |
| 334 | } |
| 335 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 336 | /* Save PCI configuration space for all devices in supported slots */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | ctrl->pci_bus->number = busnumber; |
| 338 | for (device = FirstSupported; device <= LastSupported; device++) { |
| 339 | ID = 0xFFFFFFFF; |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 340 | rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, 0), PCI_VENDOR_ID, &ID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 342 | if (ID == 0xFFFFFFFF) { |
| 343 | if (is_hot_plug) { |
| 344 | /* Setup slot structure with entry for empty |
| 345 | * slot |
| 346 | */ |
| 347 | new_slot = cpqhp_slot_create(busnumber); |
| 348 | if (new_slot == NULL) |
| 349 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
| 351 | new_slot->bus = (u8) busnumber; |
| 352 | new_slot->device = (u8) device; |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 353 | new_slot->function = 0; |
| 354 | new_slot->is_a_board = 0; |
| 355 | new_slot->presence_save = 0; |
| 356 | new_slot->switch_save = 0; |
| 357 | } |
| 358 | continue; |
| 359 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 361 | rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, 0), 0x0B, &class_code); |
| 362 | if (rc) |
| 363 | return rc; |
| 364 | |
| 365 | rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, 0), PCI_HEADER_TYPE, &header_type); |
| 366 | if (rc) |
| 367 | return rc; |
| 368 | |
| 369 | /* If multi-function device, set max_functions to 8 */ |
| 370 | if (header_type & 0x80) |
| 371 | max_functions = 8; |
| 372 | else |
| 373 | max_functions = 1; |
| 374 | |
| 375 | function = 0; |
| 376 | |
| 377 | do { |
| 378 | DevError = 0; |
| 379 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
| 380 | /* Recurse the subordinate bus |
| 381 | * get the subordinate bus number |
| 382 | */ |
| 383 | rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, function), PCI_SECONDARY_BUS, &secondary_bus); |
| 384 | if (rc) { |
| 385 | return rc; |
| 386 | } else { |
| 387 | sub_bus = (int) secondary_bus; |
| 388 | |
| 389 | /* Save secondary bus cfg spc |
| 390 | * with this recursive call. |
| 391 | */ |
| 392 | rc = cpqhp_save_config(ctrl, sub_bus, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | if (rc) |
| 394 | return rc; |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 395 | ctrl->pci_bus->number = busnumber; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 397 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 399 | index = 0; |
| 400 | new_slot = cpqhp_slot_find(busnumber, device, index++); |
| 401 | while (new_slot && |
| 402 | (new_slot->function != (u8) function)) |
| 403 | new_slot = cpqhp_slot_find(busnumber, device, index++); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 405 | if (!new_slot) { |
| 406 | /* Setup slot structure. */ |
| 407 | new_slot = cpqhp_slot_create(busnumber); |
| 408 | if (new_slot == NULL) |
| 409 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | new_slot->bus = (u8) busnumber; |
| 413 | new_slot->device = (u8) device; |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 414 | new_slot->function = (u8) function; |
| 415 | new_slot->is_a_board = 1; |
| 416 | new_slot->switch_save = 0x10; |
| 417 | /* In case of unsupported board */ |
| 418 | new_slot->status = DevError; |
| 419 | new_slot->pci_dev = pci_find_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function); |
| 420 | |
| 421 | for (cloop = 0; cloop < 0x20; cloop++) { |
| 422 | rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, function), cloop << 2, (u32 *) & (new_slot-> config_space [cloop])); |
| 423 | if (rc) |
| 424 | return rc; |
| 425 | } |
| 426 | |
| 427 | function++; |
| 428 | |
| 429 | stop_it = 0; |
| 430 | |
| 431 | /* this loop skips to the next present function |
| 432 | * reading in Class Code and Header type. |
| 433 | */ |
| 434 | while ((function < max_functions) && (!stop_it)) { |
| 435 | rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, function), PCI_VENDOR_ID, &ID); |
| 436 | if (ID == 0xFFFFFFFF) { |
| 437 | function++; |
| 438 | continue; |
| 439 | } |
| 440 | rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, function), 0x0B, &class_code); |
| 441 | if (rc) |
| 442 | return rc; |
| 443 | |
| 444 | rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, function), PCI_HEADER_TYPE, &header_type); |
| 445 | if (rc) |
| 446 | return rc; |
| 447 | |
| 448 | stop_it++; |
| 449 | } |
| 450 | |
| 451 | } while (function < max_functions); |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 452 | } /* End of FOR loop */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
Alex Chiang | 1d2e8b1 | 2009-03-31 09:23:57 -0600 | [diff] [blame] | 454 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | |
| 458 | /* |
| 459 | * cpqhp_save_slot_config |
| 460 | * |
| 461 | * Saves configuration info for all PCI devices in a given slot |
| 462 | * including subordinate busses. |
| 463 | * |
| 464 | * returns 0 if success |
| 465 | */ |
| 466 | int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot) |
| 467 | { |
| 468 | long rc; |
| 469 | u8 class_code; |
| 470 | u8 header_type; |
| 471 | u32 ID; |
| 472 | u8 secondary_bus; |
| 473 | int sub_bus; |
| 474 | int max_functions; |
Alex Chiang | de86ae1 | 2009-03-31 09:23:46 -0600 | [diff] [blame] | 475 | int function = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | int cloop = 0; |
| 477 | int stop_it; |
| 478 | |
| 479 | ID = 0xFFFFFFFF; |
| 480 | |
| 481 | ctrl->pci_bus->number = new_slot->bus; |
| 482 | pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), PCI_VENDOR_ID, &ID); |
| 483 | |
Alex Chiang | de86ae1 | 2009-03-31 09:23:46 -0600 | [diff] [blame] | 484 | if (ID == 0xFFFFFFFF) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | return 2; |
Alex Chiang | de86ae1 | 2009-03-31 09:23:46 -0600 | [diff] [blame] | 486 | |
| 487 | pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), 0x0B, &class_code); |
| 488 | pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), PCI_HEADER_TYPE, &header_type); |
| 489 | |
| 490 | if (header_type & 0x80) /* Multi-function device */ |
| 491 | max_functions = 8; |
| 492 | else |
| 493 | max_functions = 1; |
| 494 | |
| 495 | while (function < max_functions) { |
| 496 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
| 497 | /* Recurse the subordinate bus */ |
| 498 | pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_SECONDARY_BUS, &secondary_bus); |
| 499 | |
| 500 | sub_bus = (int) secondary_bus; |
| 501 | |
| 502 | /* Save the config headers for the secondary |
| 503 | * bus. |
| 504 | */ |
| 505 | rc = cpqhp_save_config(ctrl, sub_bus, 0); |
| 506 | if (rc) |
| 507 | return(rc); |
| 508 | ctrl->pci_bus->number = new_slot->bus; |
| 509 | |
| 510 | } |
| 511 | |
| 512 | new_slot->status = 0; |
| 513 | |
| 514 | for (cloop = 0; cloop < 0x20; cloop++) |
| 515 | pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), cloop << 2, (u32 *) & (new_slot-> config_space [cloop])); |
| 516 | |
| 517 | function++; |
| 518 | |
| 519 | stop_it = 0; |
| 520 | |
| 521 | /* this loop skips to the next present function |
| 522 | * reading in the Class Code and the Header type. |
| 523 | */ |
| 524 | while ((function < max_functions) && (!stop_it)) { |
| 525 | pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_VENDOR_ID, &ID); |
| 526 | |
| 527 | if (ID == 0xFFFFFFFF) |
| 528 | function++; |
| 529 | else { |
| 530 | pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), 0x0B, &class_code); |
| 531 | pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_HEADER_TYPE, &header_type); |
| 532 | stop_it++; |
| 533 | } |
| 534 | } |
| 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | |
| 542 | /* |
| 543 | * cpqhp_save_base_addr_length |
| 544 | * |
| 545 | * Saves the length of all base address registers for the |
| 546 | * specified slot. this is for hot plug REPLACE |
| 547 | * |
| 548 | * returns 0 if success |
| 549 | */ |
| 550 | int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func) |
| 551 | { |
| 552 | u8 cloop; |
| 553 | u8 header_type; |
| 554 | u8 secondary_bus; |
| 555 | u8 type; |
| 556 | int sub_bus; |
| 557 | u32 temp_register; |
| 558 | u32 base; |
| 559 | u32 rc; |
| 560 | struct pci_func *next; |
| 561 | int index = 0; |
| 562 | struct pci_bus *pci_bus = ctrl->pci_bus; |
| 563 | unsigned int devfn; |
| 564 | |
| 565 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 566 | |
| 567 | while (func != NULL) { |
| 568 | pci_bus->number = func->bus; |
| 569 | devfn = PCI_DEVFN(func->device, func->function); |
| 570 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 571 | /* Check for Bridge */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); |
| 573 | |
| 574 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | pci_bus_read_config_byte (pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus); |
| 576 | |
| 577 | sub_bus = (int) secondary_bus; |
| 578 | |
| 579 | next = cpqhp_slot_list[sub_bus]; |
| 580 | |
| 581 | while (next != NULL) { |
| 582 | rc = cpqhp_save_base_addr_length(ctrl, next); |
| 583 | if (rc) |
| 584 | return rc; |
| 585 | |
| 586 | next = next->next; |
| 587 | } |
| 588 | pci_bus->number = func->bus; |
| 589 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 590 | /* FIXME: this loop is duplicated in the non-bridge |
| 591 | * case. The two could be rolled together Figure out |
| 592 | * IO and memory base lengths |
| 593 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | for (cloop = 0x10; cloop <= 0x14; cloop += 4) { |
| 595 | temp_register = 0xFFFFFFFF; |
| 596 | pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register); |
| 597 | pci_bus_read_config_dword (pci_bus, devfn, cloop, &base); |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 598 | /* If this register is implemented */ |
| 599 | if (base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | if (base & 0x01L) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 601 | /* IO base |
| 602 | * set base = amount of IO space |
| 603 | * requested |
| 604 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | base = base & 0xFFFFFFFE; |
| 606 | base = (~base) + 1; |
| 607 | |
| 608 | type = 1; |
| 609 | } else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 610 | /* memory base */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | base = base & 0xFFFFFFF0; |
| 612 | base = (~base) + 1; |
| 613 | |
| 614 | type = 0; |
| 615 | } |
| 616 | } else { |
| 617 | base = 0x0L; |
| 618 | type = 0; |
| 619 | } |
| 620 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 621 | /* Save information in slot structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | func->base_length[(cloop - 0x10) >> 2] = |
| 623 | base; |
| 624 | func->base_type[(cloop - 0x10) >> 2] = type; |
| 625 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 626 | } /* End of base register loop */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 628 | } else if ((header_type & 0x7F) == 0x00) { |
| 629 | /* Figure out IO and memory base lengths */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | for (cloop = 0x10; cloop <= 0x24; cloop += 4) { |
| 631 | temp_register = 0xFFFFFFFF; |
| 632 | pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register); |
| 633 | pci_bus_read_config_dword (pci_bus, devfn, cloop, &base); |
| 634 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 635 | /* If this register is implemented */ |
| 636 | if (base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | if (base & 0x01L) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 638 | /* IO base |
| 639 | * base = amount of IO space |
| 640 | * requested |
| 641 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | base = base & 0xFFFFFFFE; |
| 643 | base = (~base) + 1; |
| 644 | |
| 645 | type = 1; |
| 646 | } else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 647 | /* memory base |
| 648 | * base = amount of memory |
| 649 | * space requested |
| 650 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | base = base & 0xFFFFFFF0; |
| 652 | base = (~base) + 1; |
| 653 | |
| 654 | type = 0; |
| 655 | } |
| 656 | } else { |
| 657 | base = 0x0L; |
| 658 | type = 0; |
| 659 | } |
| 660 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 661 | /* Save information in slot structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | func->base_length[(cloop - 0x10) >> 2] = base; |
| 663 | func->base_type[(cloop - 0x10) >> 2] = type; |
| 664 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 665 | } /* End of base register loop */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 667 | } else { /* Some other unknown header type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | } |
| 669 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 670 | /* find the next device in this slot */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 672 | } |
| 673 | |
| 674 | return(0); |
| 675 | } |
| 676 | |
| 677 | |
| 678 | /* |
| 679 | * cpqhp_save_used_resources |
| 680 | * |
| 681 | * Stores used resource information for existing boards. this is |
| 682 | * for boards that were in the system when this driver was loaded. |
| 683 | * this function is for hot plug ADD |
| 684 | * |
| 685 | * returns 0 if success |
| 686 | */ |
| 687 | int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func) |
| 688 | { |
| 689 | u8 cloop; |
| 690 | u8 header_type; |
| 691 | u8 secondary_bus; |
| 692 | u8 temp_byte; |
| 693 | u8 b_base; |
| 694 | u8 b_length; |
| 695 | u16 command; |
| 696 | u16 save_command; |
| 697 | u16 w_base; |
| 698 | u16 w_length; |
| 699 | u32 temp_register; |
| 700 | u32 save_base; |
| 701 | u32 base; |
| 702 | int index = 0; |
| 703 | struct pci_resource *mem_node; |
| 704 | struct pci_resource *p_mem_node; |
| 705 | struct pci_resource *io_node; |
| 706 | struct pci_resource *bus_node; |
| 707 | struct pci_bus *pci_bus = ctrl->pci_bus; |
| 708 | unsigned int devfn; |
| 709 | |
| 710 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 711 | |
| 712 | while ((func != NULL) && func->is_a_board) { |
| 713 | pci_bus->number = func->bus; |
| 714 | devfn = PCI_DEVFN(func->device, func->function); |
| 715 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 716 | /* Save the command register */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &save_command); |
| 718 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 719 | /* disable card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | command = 0x00; |
| 721 | pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command); |
| 722 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 723 | /* Check for Bridge */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type); |
| 725 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 726 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
| 727 | /* Clear Bridge Control Register */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | command = 0x00; |
| 729 | pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, command); |
| 730 | pci_bus_read_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus); |
| 731 | pci_bus_read_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, &temp_byte); |
| 732 | |
| 733 | bus_node = kmalloc(sizeof(*bus_node), GFP_KERNEL); |
| 734 | if (!bus_node) |
| 735 | return -ENOMEM; |
| 736 | |
| 737 | bus_node->base = secondary_bus; |
| 738 | bus_node->length = temp_byte - secondary_bus + 1; |
| 739 | |
| 740 | bus_node->next = func->bus_head; |
| 741 | func->bus_head = bus_node; |
| 742 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 743 | /* Save IO base and Limit registers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_BASE, &b_base); |
| 745 | pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_LIMIT, &b_length); |
| 746 | |
| 747 | if ((b_base <= b_length) && (save_command & 0x01)) { |
| 748 | io_node = kmalloc(sizeof(*io_node), GFP_KERNEL); |
| 749 | if (!io_node) |
| 750 | return -ENOMEM; |
| 751 | |
| 752 | io_node->base = (b_base & 0xF0) << 8; |
| 753 | io_node->length = (b_length - b_base + 0x10) << 8; |
| 754 | |
| 755 | io_node->next = func->io_head; |
| 756 | func->io_head = io_node; |
| 757 | } |
| 758 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 759 | /* Save memory base and Limit registers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_BASE, &w_base); |
| 761 | pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, &w_length); |
| 762 | |
| 763 | if ((w_base <= w_length) && (save_command & 0x02)) { |
| 764 | mem_node = kmalloc(sizeof(*mem_node), GFP_KERNEL); |
| 765 | if (!mem_node) |
| 766 | return -ENOMEM; |
| 767 | |
| 768 | mem_node->base = w_base << 16; |
| 769 | mem_node->length = (w_length - w_base + 0x10) << 16; |
| 770 | |
| 771 | mem_node->next = func->mem_head; |
| 772 | func->mem_head = mem_node; |
| 773 | } |
| 774 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 775 | /* Save prefetchable memory base and Limit registers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, &w_base); |
| 777 | pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, &w_length); |
| 778 | |
| 779 | if ((w_base <= w_length) && (save_command & 0x02)) { |
| 780 | p_mem_node = kmalloc(sizeof(*p_mem_node), GFP_KERNEL); |
| 781 | if (!p_mem_node) |
| 782 | return -ENOMEM; |
| 783 | |
| 784 | p_mem_node->base = w_base << 16; |
| 785 | p_mem_node->length = (w_length - w_base + 0x10) << 16; |
| 786 | |
| 787 | p_mem_node->next = func->p_mem_head; |
| 788 | func->p_mem_head = p_mem_node; |
| 789 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 790 | /* Figure out IO and memory base lengths */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | for (cloop = 0x10; cloop <= 0x14; cloop += 4) { |
| 792 | pci_bus_read_config_dword (pci_bus, devfn, cloop, &save_base); |
| 793 | |
| 794 | temp_register = 0xFFFFFFFF; |
| 795 | pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register); |
| 796 | pci_bus_read_config_dword(pci_bus, devfn, cloop, &base); |
| 797 | |
| 798 | temp_register = base; |
| 799 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 800 | /* If this register is implemented */ |
| 801 | if (base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | if (((base & 0x03L) == 0x01) |
| 803 | && (save_command & 0x01)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 804 | /* IO base |
| 805 | * set temp_register = amount |
| 806 | * of IO space requested |
| 807 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | temp_register = base & 0xFFFFFFFE; |
| 809 | temp_register = (~temp_register) + 1; |
| 810 | |
| 811 | io_node = kmalloc(sizeof(*io_node), |
| 812 | GFP_KERNEL); |
| 813 | if (!io_node) |
| 814 | return -ENOMEM; |
| 815 | |
| 816 | io_node->base = |
| 817 | save_base & (~0x03L); |
| 818 | io_node->length = temp_register; |
| 819 | |
| 820 | io_node->next = func->io_head; |
| 821 | func->io_head = io_node; |
| 822 | } else |
| 823 | if (((base & 0x0BL) == 0x08) |
| 824 | && (save_command & 0x02)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 825 | /* prefetchable memory base */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | temp_register = base & 0xFFFFFFF0; |
| 827 | temp_register = (~temp_register) + 1; |
| 828 | |
| 829 | p_mem_node = kmalloc(sizeof(*p_mem_node), |
| 830 | GFP_KERNEL); |
| 831 | if (!p_mem_node) |
| 832 | return -ENOMEM; |
| 833 | |
| 834 | p_mem_node->base = save_base & (~0x0FL); |
| 835 | p_mem_node->length = temp_register; |
| 836 | |
| 837 | p_mem_node->next = func->p_mem_head; |
| 838 | func->p_mem_head = p_mem_node; |
| 839 | } else |
| 840 | if (((base & 0x0BL) == 0x00) |
| 841 | && (save_command & 0x02)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 842 | /* prefetchable memory base */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | temp_register = base & 0xFFFFFFF0; |
| 844 | temp_register = (~temp_register) + 1; |
| 845 | |
| 846 | mem_node = kmalloc(sizeof(*mem_node), |
| 847 | GFP_KERNEL); |
| 848 | if (!mem_node) |
| 849 | return -ENOMEM; |
| 850 | |
| 851 | mem_node->base = save_base & (~0x0FL); |
| 852 | mem_node->length = temp_register; |
| 853 | |
| 854 | mem_node->next = func->mem_head; |
| 855 | func->mem_head = mem_node; |
| 856 | } else |
| 857 | return(1); |
| 858 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 859 | } /* End of base register loop */ |
| 860 | /* Standard header */ |
| 861 | } else if ((header_type & 0x7F) == 0x00) { |
| 862 | /* Figure out IO and memory base lengths */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | for (cloop = 0x10; cloop <= 0x24; cloop += 4) { |
| 864 | pci_bus_read_config_dword(pci_bus, devfn, cloop, &save_base); |
| 865 | |
| 866 | temp_register = 0xFFFFFFFF; |
| 867 | pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register); |
| 868 | pci_bus_read_config_dword(pci_bus, devfn, cloop, &base); |
| 869 | |
| 870 | temp_register = base; |
| 871 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 872 | /* If this register is implemented */ |
| 873 | if (base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | if (((base & 0x03L) == 0x01) |
| 875 | && (save_command & 0x01)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 876 | /* IO base |
| 877 | * set temp_register = amount |
| 878 | * of IO space requested |
| 879 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | temp_register = base & 0xFFFFFFFE; |
| 881 | temp_register = (~temp_register) + 1; |
| 882 | |
| 883 | io_node = kmalloc(sizeof(*io_node), |
| 884 | GFP_KERNEL); |
| 885 | if (!io_node) |
| 886 | return -ENOMEM; |
| 887 | |
| 888 | io_node->base = save_base & (~0x01L); |
| 889 | io_node->length = temp_register; |
| 890 | |
| 891 | io_node->next = func->io_head; |
| 892 | func->io_head = io_node; |
| 893 | } else |
| 894 | if (((base & 0x0BL) == 0x08) |
| 895 | && (save_command & 0x02)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 896 | /* prefetchable memory base */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | temp_register = base & 0xFFFFFFF0; |
| 898 | temp_register = (~temp_register) + 1; |
| 899 | |
| 900 | p_mem_node = kmalloc(sizeof(*p_mem_node), |
| 901 | GFP_KERNEL); |
| 902 | if (!p_mem_node) |
| 903 | return -ENOMEM; |
| 904 | |
| 905 | p_mem_node->base = save_base & (~0x0FL); |
| 906 | p_mem_node->length = temp_register; |
| 907 | |
| 908 | p_mem_node->next = func->p_mem_head; |
| 909 | func->p_mem_head = p_mem_node; |
| 910 | } else |
| 911 | if (((base & 0x0BL) == 0x00) |
| 912 | && (save_command & 0x02)) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 913 | /* prefetchable memory base */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | temp_register = base & 0xFFFFFFF0; |
| 915 | temp_register = (~temp_register) + 1; |
| 916 | |
| 917 | mem_node = kmalloc(sizeof(*mem_node), |
| 918 | GFP_KERNEL); |
| 919 | if (!mem_node) |
| 920 | return -ENOMEM; |
| 921 | |
| 922 | mem_node->base = save_base & (~0x0FL); |
| 923 | mem_node->length = temp_register; |
| 924 | |
| 925 | mem_node->next = func->mem_head; |
| 926 | func->mem_head = mem_node; |
| 927 | } else |
| 928 | return(1); |
| 929 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 930 | } /* End of base register loop */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 933 | /* find the next device in this slot */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 935 | } |
| 936 | |
Alex Chiang | 4aabb58 | 2009-03-31 09:23:52 -0600 | [diff] [blame] | 937 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | } |
| 939 | |
| 940 | |
| 941 | /* |
| 942 | * cpqhp_configure_board |
| 943 | * |
| 944 | * Copies saved configuration information to one slot. |
| 945 | * this is called recursively for bridge devices. |
| 946 | * this is for hot plug REPLACE! |
| 947 | * |
| 948 | * returns 0 if success |
| 949 | */ |
| 950 | int cpqhp_configure_board(struct controller *ctrl, struct pci_func * func) |
| 951 | { |
| 952 | int cloop; |
| 953 | u8 header_type; |
| 954 | u8 secondary_bus; |
| 955 | int sub_bus; |
| 956 | struct pci_func *next; |
| 957 | u32 temp; |
| 958 | u32 rc; |
| 959 | int index = 0; |
| 960 | struct pci_bus *pci_bus = ctrl->pci_bus; |
| 961 | unsigned int devfn; |
| 962 | |
| 963 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 964 | |
| 965 | while (func != NULL) { |
| 966 | pci_bus->number = func->bus; |
| 967 | devfn = PCI_DEVFN(func->device, func->function); |
| 968 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 969 | /* Start at the top of config space so that the control |
| 970 | * registers are programmed last |
| 971 | */ |
Alex Chiang | 4aabb58 | 2009-03-31 09:23:52 -0600 | [diff] [blame] | 972 | for (cloop = 0x3C; cloop > 0; cloop -= 4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | pci_bus_write_config_dword (pci_bus, devfn, cloop, func->config_space[cloop >> 2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | |
| 975 | pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); |
| 976 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 977 | /* If this is a bridge device, restore subordinate devices */ |
| 978 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | pci_bus_read_config_byte (pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus); |
| 980 | |
| 981 | sub_bus = (int) secondary_bus; |
| 982 | |
| 983 | next = cpqhp_slot_list[sub_bus]; |
| 984 | |
| 985 | while (next != NULL) { |
| 986 | rc = cpqhp_configure_board(ctrl, next); |
| 987 | if (rc) |
| 988 | return rc; |
| 989 | |
| 990 | next = next->next; |
| 991 | } |
| 992 | } else { |
| 993 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 994 | /* Check all the base Address Registers to make sure |
| 995 | * they are the same. If not, the board is different. |
| 996 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | |
| 998 | for (cloop = 16; cloop < 40; cloop += 4) { |
| 999 | pci_bus_read_config_dword (pci_bus, devfn, cloop, &temp); |
| 1000 | |
| 1001 | if (temp != func->config_space[cloop >> 2]) { |
| 1002 | dbg("Config space compare failure!!! offset = %x\n", cloop); |
| 1003 | dbg("bus = %x, device = %x, function = %x\n", func->bus, func->device, func->function); |
| 1004 | dbg("temp = %x, config space = %x\n\n", temp, func->config_space[cloop >> 2]); |
| 1005 | return 1; |
| 1006 | } |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | func->configured = 1; |
| 1011 | |
| 1012 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 1013 | } |
| 1014 | |
| 1015 | return 0; |
| 1016 | } |
| 1017 | |
| 1018 | |
| 1019 | /* |
| 1020 | * cpqhp_valid_replace |
| 1021 | * |
| 1022 | * this function checks to see if a board is the same as the |
| 1023 | * one it is replacing. this check will detect if the device's |
| 1024 | * vendor or device id's are the same |
| 1025 | * |
| 1026 | * returns 0 if the board is the same nonzero otherwise |
| 1027 | */ |
| 1028 | int cpqhp_valid_replace(struct controller *ctrl, struct pci_func * func) |
| 1029 | { |
| 1030 | u8 cloop; |
| 1031 | u8 header_type; |
| 1032 | u8 secondary_bus; |
| 1033 | u8 type; |
| 1034 | u32 temp_register = 0; |
| 1035 | u32 base; |
| 1036 | u32 rc; |
| 1037 | struct pci_func *next; |
| 1038 | int index = 0; |
| 1039 | struct pci_bus *pci_bus = ctrl->pci_bus; |
| 1040 | unsigned int devfn; |
| 1041 | |
| 1042 | if (!func->is_a_board) |
| 1043 | return(ADD_NOT_SUPPORTED); |
| 1044 | |
| 1045 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 1046 | |
| 1047 | while (func != NULL) { |
| 1048 | pci_bus->number = func->bus; |
| 1049 | devfn = PCI_DEVFN(func->device, func->function); |
| 1050 | |
| 1051 | pci_bus_read_config_dword (pci_bus, devfn, PCI_VENDOR_ID, &temp_register); |
| 1052 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1053 | /* No adapter present */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | if (temp_register == 0xFFFFFFFF) |
| 1055 | return(NO_ADAPTER_PRESENT); |
| 1056 | |
| 1057 | if (temp_register != func->config_space[0]) |
| 1058 | return(ADAPTER_NOT_SAME); |
| 1059 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1060 | /* Check for same revision number and class code */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | pci_bus_read_config_dword (pci_bus, devfn, PCI_CLASS_REVISION, &temp_register); |
| 1062 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1063 | /* Adapter not the same */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | if (temp_register != func->config_space[0x08 >> 2]) |
| 1065 | return(ADAPTER_NOT_SAME); |
| 1066 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1067 | /* Check for Bridge */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); |
| 1069 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1070 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
| 1071 | /* In order to continue checking, we must program the |
| 1072 | * bus registers in the bridge to respond to accesses |
| 1073 | * for its subordinate bus(es) |
| 1074 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | |
| 1076 | temp_register = func->config_space[0x18 >> 2]; |
| 1077 | pci_bus_write_config_dword (pci_bus, devfn, PCI_PRIMARY_BUS, temp_register); |
| 1078 | |
| 1079 | secondary_bus = (temp_register >> 8) & 0xFF; |
| 1080 | |
| 1081 | next = cpqhp_slot_list[secondary_bus]; |
| 1082 | |
| 1083 | while (next != NULL) { |
| 1084 | rc = cpqhp_valid_replace(ctrl, next); |
| 1085 | if (rc) |
| 1086 | return rc; |
| 1087 | |
| 1088 | next = next->next; |
| 1089 | } |
| 1090 | |
| 1091 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1092 | /* Check to see if it is a standard config header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | else if ((header_type & 0x7F) == PCI_HEADER_TYPE_NORMAL) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1094 | /* Check subsystem vendor and ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | pci_bus_read_config_dword (pci_bus, devfn, PCI_SUBSYSTEM_VENDOR_ID, &temp_register); |
| 1096 | |
| 1097 | if (temp_register != func->config_space[0x2C >> 2]) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1098 | /* If it's a SMART-2 and the register isn't |
| 1099 | * filled in, ignore the difference because |
| 1100 | * they just have an old rev of the firmware |
| 1101 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | if (!((func->config_space[0] == 0xAE100E11) |
| 1103 | && (temp_register == 0x00L))) |
| 1104 | return(ADAPTER_NOT_SAME); |
| 1105 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1106 | /* Figure out IO and memory base lengths */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | for (cloop = 0x10; cloop <= 0x24; cloop += 4) { |
| 1108 | temp_register = 0xFFFFFFFF; |
| 1109 | pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register); |
| 1110 | pci_bus_read_config_dword (pci_bus, devfn, cloop, &base); |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1111 | |
| 1112 | /* If this register is implemented */ |
| 1113 | if (base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | if (base & 0x01L) { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1115 | /* IO base |
| 1116 | * set base = amount of IO |
| 1117 | * space requested |
| 1118 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | base = base & 0xFFFFFFFE; |
| 1120 | base = (~base) + 1; |
| 1121 | |
| 1122 | type = 1; |
| 1123 | } else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1124 | /* memory base */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | base = base & 0xFFFFFFF0; |
| 1126 | base = (~base) + 1; |
| 1127 | |
| 1128 | type = 0; |
| 1129 | } |
| 1130 | } else { |
| 1131 | base = 0x0L; |
| 1132 | type = 0; |
| 1133 | } |
| 1134 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1135 | /* Check information in slot structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | if (func->base_length[(cloop - 0x10) >> 2] != base) |
| 1137 | return(ADAPTER_NOT_SAME); |
| 1138 | |
| 1139 | if (func->base_type[(cloop - 0x10) >> 2] != type) |
| 1140 | return(ADAPTER_NOT_SAME); |
| 1141 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1142 | } /* End of base register loop */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1144 | } /* End of (type 0 config space) else */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | else { |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1146 | /* this is not a type 0 or 1 config space header so |
| 1147 | * we don't know how to do it |
| 1148 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | return(DEVICE_TYPE_NOT_SUPPORTED); |
| 1150 | } |
| 1151 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1152 | /* Get the next function */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | func = cpqhp_slot_find(func->bus, func->device, index++); |
| 1154 | } |
| 1155 | |
| 1156 | |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | |
| 1161 | /* |
| 1162 | * cpqhp_find_available_resources |
| 1163 | * |
| 1164 | * Finds available memory, IO, and IRQ resources for programming |
| 1165 | * devices which may be added to the system |
| 1166 | * this function is for hot plug ADD! |
| 1167 | * |
| 1168 | * returns 0 if success |
Alex Chiang | 861fefb | 2009-03-31 09:23:11 -0600 | [diff] [blame] | 1169 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_start) |
| 1171 | { |
| 1172 | u8 temp; |
| 1173 | u8 populated_slot; |
| 1174 | u8 bridged_slot; |
| 1175 | void __iomem *one_slot; |
| 1176 | void __iomem *rom_resource_table; |
| 1177 | struct pci_func *func = NULL; |
| 1178 | int i = 10, index; |
| 1179 | u32 temp_dword, rc; |
| 1180 | struct pci_resource *mem_node; |
| 1181 | struct pci_resource *p_mem_node; |
| 1182 | struct pci_resource *io_node; |
| 1183 | struct pci_resource *bus_node; |
| 1184 | |
| 1185 | rom_resource_table = detect_HRT_floating_pointer(rom_start, rom_start+0xffff); |
| 1186 | dbg("rom_resource_table = %p\n", rom_resource_table); |
| 1187 | |
Alex Chiang | 4aabb58 | 2009-03-31 09:23:52 -0600 | [diff] [blame] | 1188 | if (rom_resource_table == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | return -ENODEV; |
Alex Chiang | 4aabb58 | 2009-03-31 09:23:52 -0600 | [diff] [blame] | 1190 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1191 | /* Sum all resources and setup resource maps */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | unused_IRQ = readl(rom_resource_table + UNUSED_IRQ); |
| 1193 | dbg("unused_IRQ = %x\n", unused_IRQ); |
| 1194 | |
| 1195 | temp = 0; |
| 1196 | while (unused_IRQ) { |
| 1197 | if (unused_IRQ & 1) { |
| 1198 | cpqhp_disk_irq = temp; |
| 1199 | break; |
| 1200 | } |
| 1201 | unused_IRQ = unused_IRQ >> 1; |
| 1202 | temp++; |
| 1203 | } |
| 1204 | |
| 1205 | dbg("cpqhp_disk_irq= %d\n", cpqhp_disk_irq); |
| 1206 | unused_IRQ = unused_IRQ >> 1; |
| 1207 | temp++; |
| 1208 | |
| 1209 | while (unused_IRQ) { |
| 1210 | if (unused_IRQ & 1) { |
| 1211 | cpqhp_nic_irq = temp; |
| 1212 | break; |
| 1213 | } |
| 1214 | unused_IRQ = unused_IRQ >> 1; |
| 1215 | temp++; |
| 1216 | } |
| 1217 | |
| 1218 | dbg("cpqhp_nic_irq= %d\n", cpqhp_nic_irq); |
| 1219 | unused_IRQ = readl(rom_resource_table + PCIIRQ); |
| 1220 | |
| 1221 | temp = 0; |
| 1222 | |
Alex Chiang | 4aabb58 | 2009-03-31 09:23:52 -0600 | [diff] [blame] | 1223 | if (!cpqhp_nic_irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | cpqhp_nic_irq = ctrl->cfgspc_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | |
Alex Chiang | 4aabb58 | 2009-03-31 09:23:52 -0600 | [diff] [blame] | 1226 | if (!cpqhp_disk_irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | cpqhp_disk_irq = ctrl->cfgspc_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | |
| 1229 | dbg("cpqhp_disk_irq, cpqhp_nic_irq= %d, %d\n", cpqhp_disk_irq, cpqhp_nic_irq); |
| 1230 | |
| 1231 | rc = compaq_nvram_load(rom_start, ctrl); |
| 1232 | if (rc) |
| 1233 | return rc; |
| 1234 | |
| 1235 | one_slot = rom_resource_table + sizeof (struct hrt); |
| 1236 | |
| 1237 | i = readb(rom_resource_table + NUMBER_OF_ENTRIES); |
| 1238 | dbg("number_of_entries = %d\n", i); |
| 1239 | |
| 1240 | if (!readb(one_slot + SECONDARY_BUS)) |
| 1241 | return 1; |
| 1242 | |
| 1243 | dbg("dev|IO base|length|Mem base|length|Pre base|length|PB SB MB\n"); |
| 1244 | |
| 1245 | while (i && readb(one_slot + SECONDARY_BUS)) { |
| 1246 | u8 dev_func = readb(one_slot + DEV_FUNC); |
| 1247 | u8 primary_bus = readb(one_slot + PRIMARY_BUS); |
| 1248 | u8 secondary_bus = readb(one_slot + SECONDARY_BUS); |
| 1249 | u8 max_bus = readb(one_slot + MAX_BUS); |
| 1250 | u16 io_base = readw(one_slot + IO_BASE); |
| 1251 | u16 io_length = readw(one_slot + IO_LENGTH); |
| 1252 | u16 mem_base = readw(one_slot + MEM_BASE); |
| 1253 | u16 mem_length = readw(one_slot + MEM_LENGTH); |
| 1254 | u16 pre_mem_base = readw(one_slot + PRE_MEM_BASE); |
| 1255 | u16 pre_mem_length = readw(one_slot + PRE_MEM_LENGTH); |
| 1256 | |
| 1257 | dbg("%2.2x | %4.4x | %4.4x | %4.4x | %4.4x | %4.4x | %4.4x |%2.2x %2.2x %2.2x\n", |
| 1258 | dev_func, io_base, io_length, mem_base, mem_length, pre_mem_base, pre_mem_length, |
| 1259 | primary_bus, secondary_bus, max_bus); |
| 1260 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1261 | /* If this entry isn't for our controller's bus, ignore it */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | if (primary_bus != ctrl->bus) { |
| 1263 | i--; |
| 1264 | one_slot += sizeof (struct slot_rt); |
| 1265 | continue; |
| 1266 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1267 | /* find out if this entry is for an occupied slot */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | ctrl->pci_bus->number = primary_bus; |
| 1269 | pci_bus_read_config_dword (ctrl->pci_bus, dev_func, PCI_VENDOR_ID, &temp_dword); |
| 1270 | dbg("temp_D_word = %x\n", temp_dword); |
| 1271 | |
| 1272 | if (temp_dword != 0xFFFFFFFF) { |
| 1273 | index = 0; |
| 1274 | func = cpqhp_slot_find(primary_bus, dev_func >> 3, 0); |
| 1275 | |
| 1276 | while (func && (func->function != (dev_func & 0x07))) { |
| 1277 | dbg("func = %p (bus, dev, fun) = (%d, %d, %d)\n", func, primary_bus, dev_func >> 3, index); |
| 1278 | func = cpqhp_slot_find(primary_bus, dev_func >> 3, index++); |
| 1279 | } |
| 1280 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1281 | /* If we can't find a match, skip this table entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | if (!func) { |
| 1283 | i--; |
| 1284 | one_slot += sizeof (struct slot_rt); |
| 1285 | continue; |
| 1286 | } |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1287 | /* this may not work and shouldn't be used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | if (secondary_bus != primary_bus) |
| 1289 | bridged_slot = 1; |
| 1290 | else |
| 1291 | bridged_slot = 0; |
| 1292 | |
| 1293 | populated_slot = 1; |
| 1294 | } else { |
| 1295 | populated_slot = 0; |
| 1296 | bridged_slot = 0; |
| 1297 | } |
| 1298 | |
| 1299 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1300 | /* If we've got a valid IO base, use it */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | |
| 1302 | temp_dword = io_base + io_length; |
| 1303 | |
| 1304 | if ((io_base) && (temp_dword < 0x10000)) { |
| 1305 | io_node = kmalloc(sizeof(*io_node), GFP_KERNEL); |
| 1306 | if (!io_node) |
| 1307 | return -ENOMEM; |
| 1308 | |
| 1309 | io_node->base = io_base; |
| 1310 | io_node->length = io_length; |
| 1311 | |
| 1312 | dbg("found io_node(base, length) = %x, %x\n", |
| 1313 | io_node->base, io_node->length); |
| 1314 | dbg("populated slot =%d \n", populated_slot); |
| 1315 | if (!populated_slot) { |
| 1316 | io_node->next = ctrl->io_head; |
| 1317 | ctrl->io_head = io_node; |
| 1318 | } else { |
| 1319 | io_node->next = func->io_head; |
| 1320 | func->io_head = io_node; |
| 1321 | } |
| 1322 | } |
| 1323 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1324 | /* If we've got a valid memory base, use it */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | temp_dword = mem_base + mem_length; |
| 1326 | if ((mem_base) && (temp_dword < 0x10000)) { |
| 1327 | mem_node = kmalloc(sizeof(*mem_node), GFP_KERNEL); |
| 1328 | if (!mem_node) |
| 1329 | return -ENOMEM; |
| 1330 | |
| 1331 | mem_node->base = mem_base << 16; |
| 1332 | |
| 1333 | mem_node->length = mem_length << 16; |
| 1334 | |
| 1335 | dbg("found mem_node(base, length) = %x, %x\n", |
| 1336 | mem_node->base, mem_node->length); |
| 1337 | dbg("populated slot =%d \n", populated_slot); |
| 1338 | if (!populated_slot) { |
| 1339 | mem_node->next = ctrl->mem_head; |
| 1340 | ctrl->mem_head = mem_node; |
| 1341 | } else { |
| 1342 | mem_node->next = func->mem_head; |
| 1343 | func->mem_head = mem_node; |
| 1344 | } |
| 1345 | } |
| 1346 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1347 | /* If we've got a valid prefetchable memory base, and |
| 1348 | * the base + length isn't greater than 0xFFFF |
| 1349 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | temp_dword = pre_mem_base + pre_mem_length; |
| 1351 | if ((pre_mem_base) && (temp_dword < 0x10000)) { |
| 1352 | p_mem_node = kmalloc(sizeof(*p_mem_node), GFP_KERNEL); |
| 1353 | if (!p_mem_node) |
| 1354 | return -ENOMEM; |
| 1355 | |
| 1356 | p_mem_node->base = pre_mem_base << 16; |
| 1357 | |
| 1358 | p_mem_node->length = pre_mem_length << 16; |
| 1359 | dbg("found p_mem_node(base, length) = %x, %x\n", |
| 1360 | p_mem_node->base, p_mem_node->length); |
| 1361 | dbg("populated slot =%d \n", populated_slot); |
| 1362 | |
| 1363 | if (!populated_slot) { |
| 1364 | p_mem_node->next = ctrl->p_mem_head; |
| 1365 | ctrl->p_mem_head = p_mem_node; |
| 1366 | } else { |
| 1367 | p_mem_node->next = func->p_mem_head; |
| 1368 | func->p_mem_head = p_mem_node; |
| 1369 | } |
| 1370 | } |
| 1371 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1372 | /* If we've got a valid bus number, use it |
| 1373 | * The second condition is to ignore bus numbers on |
| 1374 | * populated slots that don't have PCI-PCI bridges |
| 1375 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | if (secondary_bus && (secondary_bus != primary_bus)) { |
| 1377 | bus_node = kmalloc(sizeof(*bus_node), GFP_KERNEL); |
| 1378 | if (!bus_node) |
| 1379 | return -ENOMEM; |
| 1380 | |
| 1381 | bus_node->base = secondary_bus; |
| 1382 | bus_node->length = max_bus - secondary_bus + 1; |
| 1383 | dbg("found bus_node(base, length) = %x, %x\n", |
| 1384 | bus_node->base, bus_node->length); |
| 1385 | dbg("populated slot =%d \n", populated_slot); |
| 1386 | if (!populated_slot) { |
| 1387 | bus_node->next = ctrl->bus_head; |
| 1388 | ctrl->bus_head = bus_node; |
| 1389 | } else { |
| 1390 | bus_node->next = func->bus_head; |
| 1391 | func->bus_head = bus_node; |
| 1392 | } |
| 1393 | } |
| 1394 | |
| 1395 | i--; |
| 1396 | one_slot += sizeof (struct slot_rt); |
| 1397 | } |
| 1398 | |
Alex Chiang | 427438c | 2009-03-31 09:23:16 -0600 | [diff] [blame] | 1399 | /* If all of the following fail, we don't have any resources for |
| 1400 | * hot plug add |
| 1401 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | rc = 1; |
| 1403 | rc &= cpqhp_resource_sort_and_combine(&(ctrl->mem_head)); |
| 1404 | rc &= cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head)); |
| 1405 | rc &= cpqhp_resource_sort_and_combine(&(ctrl->io_head)); |
| 1406 | rc &= cpqhp_resource_sort_and_combine(&(ctrl->bus_head)); |
| 1407 | |
| 1408 | return rc; |
| 1409 | } |
| 1410 | |
| 1411 | |
| 1412 | /* |
| 1413 | * cpqhp_return_board_resources |
| 1414 | * |
| 1415 | * this routine returns all resources allocated to a board to |
| 1416 | * the available pool. |
| 1417 | * |
| 1418 | * returns 0 if success |
| 1419 | */ |
| 1420 | int cpqhp_return_board_resources(struct pci_func * func, struct resource_lists * resources) |
| 1421 | { |
| 1422 | int rc = 0; |
| 1423 | struct pci_resource *node; |
| 1424 | struct pci_resource *t_node; |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 1425 | dbg("%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | |
| 1427 | if (!func) |
| 1428 | return 1; |
| 1429 | |
| 1430 | node = func->io_head; |
| 1431 | func->io_head = NULL; |
| 1432 | while (node) { |
| 1433 | t_node = node->next; |
| 1434 | return_resource(&(resources->io_head), node); |
| 1435 | node = t_node; |
| 1436 | } |
| 1437 | |
| 1438 | node = func->mem_head; |
| 1439 | func->mem_head = NULL; |
| 1440 | while (node) { |
| 1441 | t_node = node->next; |
| 1442 | return_resource(&(resources->mem_head), node); |
| 1443 | node = t_node; |
| 1444 | } |
| 1445 | |
| 1446 | node = func->p_mem_head; |
| 1447 | func->p_mem_head = NULL; |
| 1448 | while (node) { |
| 1449 | t_node = node->next; |
| 1450 | return_resource(&(resources->p_mem_head), node); |
| 1451 | node = t_node; |
| 1452 | } |
| 1453 | |
| 1454 | node = func->bus_head; |
| 1455 | func->bus_head = NULL; |
| 1456 | while (node) { |
| 1457 | t_node = node->next; |
| 1458 | return_resource(&(resources->bus_head), node); |
| 1459 | node = t_node; |
| 1460 | } |
| 1461 | |
| 1462 | rc |= cpqhp_resource_sort_and_combine(&(resources->mem_head)); |
| 1463 | rc |= cpqhp_resource_sort_and_combine(&(resources->p_mem_head)); |
| 1464 | rc |= cpqhp_resource_sort_and_combine(&(resources->io_head)); |
| 1465 | rc |= cpqhp_resource_sort_and_combine(&(resources->bus_head)); |
| 1466 | |
| 1467 | return rc; |
| 1468 | } |
| 1469 | |
| 1470 | |
| 1471 | /* |
| 1472 | * cpqhp_destroy_resource_list |
| 1473 | * |
| 1474 | * Puts node back in the resource list pointed to by head |
| 1475 | */ |
| 1476 | void cpqhp_destroy_resource_list (struct resource_lists * resources) |
| 1477 | { |
| 1478 | struct pci_resource *res, *tres; |
| 1479 | |
| 1480 | res = resources->io_head; |
| 1481 | resources->io_head = NULL; |
| 1482 | |
| 1483 | while (res) { |
| 1484 | tres = res; |
| 1485 | res = res->next; |
| 1486 | kfree(tres); |
| 1487 | } |
| 1488 | |
| 1489 | res = resources->mem_head; |
| 1490 | resources->mem_head = NULL; |
| 1491 | |
| 1492 | while (res) { |
| 1493 | tres = res; |
| 1494 | res = res->next; |
| 1495 | kfree(tres); |
| 1496 | } |
| 1497 | |
| 1498 | res = resources->p_mem_head; |
| 1499 | resources->p_mem_head = NULL; |
| 1500 | |
| 1501 | while (res) { |
| 1502 | tres = res; |
| 1503 | res = res->next; |
| 1504 | kfree(tres); |
| 1505 | } |
| 1506 | |
| 1507 | res = resources->bus_head; |
| 1508 | resources->bus_head = NULL; |
| 1509 | |
| 1510 | while (res) { |
| 1511 | tres = res; |
| 1512 | res = res->next; |
| 1513 | kfree(tres); |
| 1514 | } |
| 1515 | } |
| 1516 | |
| 1517 | |
| 1518 | /* |
| 1519 | * cpqhp_destroy_board_resources |
| 1520 | * |
| 1521 | * Puts node back in the resource list pointed to by head |
| 1522 | */ |
| 1523 | void cpqhp_destroy_board_resources (struct pci_func * func) |
| 1524 | { |
| 1525 | struct pci_resource *res, *tres; |
| 1526 | |
| 1527 | res = func->io_head; |
| 1528 | func->io_head = NULL; |
| 1529 | |
| 1530 | while (res) { |
| 1531 | tres = res; |
| 1532 | res = res->next; |
| 1533 | kfree(tres); |
| 1534 | } |
| 1535 | |
| 1536 | res = func->mem_head; |
| 1537 | func->mem_head = NULL; |
| 1538 | |
| 1539 | while (res) { |
| 1540 | tres = res; |
| 1541 | res = res->next; |
| 1542 | kfree(tres); |
| 1543 | } |
| 1544 | |
| 1545 | res = func->p_mem_head; |
| 1546 | func->p_mem_head = NULL; |
| 1547 | |
| 1548 | while (res) { |
| 1549 | tres = res; |
| 1550 | res = res->next; |
| 1551 | kfree(tres); |
| 1552 | } |
| 1553 | |
| 1554 | res = func->bus_head; |
| 1555 | func->bus_head = NULL; |
| 1556 | |
| 1557 | while (res) { |
| 1558 | tres = res; |
| 1559 | res = res->next; |
| 1560 | kfree(tres); |
| 1561 | } |
| 1562 | } |
| 1563 | |