Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * CompactPCI Hot Plug Driver PCI functions |
| 3 | * |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 4 | * Copyright (C) 2002,2005 by SOMA Networks, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or (at |
| 11 | * your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 16 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 17 | * details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | * |
| 23 | * Send feedback to <scottm@somanetworks.com> |
| 24 | */ |
| 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/module.h> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/pci.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 29 | #include <linux/pci_hotplug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/proc_fs.h> |
| 31 | #include "../pci.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "cpci_hotplug.h" |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #define MY_NAME "cpci_hotplug" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | extern int cpci_debug; |
| 37 | |
| 38 | #define dbg(format, arg...) \ |
| 39 | do { \ |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 40 | if (cpci_debug) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | printk (KERN_DEBUG "%s: " format "\n", \ |
| 42 | MY_NAME , ## arg); \ |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 43 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg) |
| 45 | #define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg) |
| 46 | #define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg) |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | u8 cpci_get_attention_status(struct slot* slot) |
| 50 | { |
| 51 | int hs_cap; |
| 52 | u16 hs_csr; |
| 53 | |
| 54 | hs_cap = pci_bus_find_capability(slot->bus, |
| 55 | slot->devfn, |
| 56 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 57 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 60 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | slot->devfn, |
| 62 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 63 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | return hs_csr & 0x0008 ? 1 : 0; |
| 67 | } |
| 68 | |
| 69 | int cpci_set_attention_status(struct slot* slot, int status) |
| 70 | { |
| 71 | int hs_cap; |
| 72 | u16 hs_csr; |
| 73 | |
| 74 | hs_cap = pci_bus_find_capability(slot->bus, |
| 75 | slot->devfn, |
| 76 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 77 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 79 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | slot->devfn, |
| 81 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 82 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 84 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | hs_csr |= HS_CSR_LOO; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 86 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | hs_csr &= ~HS_CSR_LOO; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 88 | if (pci_bus_write_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | slot->devfn, |
| 90 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 91 | hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | return 1; |
| 94 | } |
| 95 | |
| 96 | u16 cpci_get_hs_csr(struct slot* slot) |
| 97 | { |
| 98 | int hs_cap; |
| 99 | u16 hs_csr; |
| 100 | |
| 101 | hs_cap = pci_bus_find_capability(slot->bus, |
| 102 | slot->devfn, |
| 103 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 104 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | return 0xFFFF; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 106 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | slot->devfn, |
| 108 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 109 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | return 0xFFFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | return hs_csr; |
| 112 | } |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | int cpci_check_and_clear_ins(struct slot* slot) |
| 115 | { |
| 116 | int hs_cap; |
| 117 | u16 hs_csr; |
| 118 | int ins = 0; |
| 119 | |
| 120 | hs_cap = pci_bus_find_capability(slot->bus, |
| 121 | slot->devfn, |
| 122 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 123 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 125 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | slot->devfn, |
| 127 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 128 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 130 | if (hs_csr & HS_CSR_INS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | /* Clear INS (by setting it) */ |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 132 | if (pci_bus_write_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | slot->devfn, |
| 134 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 135 | hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | ins = 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 137 | else |
| 138 | ins = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | } |
| 140 | return ins; |
| 141 | } |
| 142 | |
| 143 | int cpci_check_ext(struct slot* slot) |
| 144 | { |
| 145 | int hs_cap; |
| 146 | u16 hs_csr; |
| 147 | int ext = 0; |
| 148 | |
| 149 | hs_cap = pci_bus_find_capability(slot->bus, |
| 150 | slot->devfn, |
| 151 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 152 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 154 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | slot->devfn, |
| 156 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 157 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | return 0; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 159 | if (hs_csr & HS_CSR_EXT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | ext = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | return ext; |
| 162 | } |
| 163 | |
| 164 | int cpci_clear_ext(struct slot* slot) |
| 165 | { |
| 166 | int hs_cap; |
| 167 | u16 hs_csr; |
| 168 | |
| 169 | hs_cap = pci_bus_find_capability(slot->bus, |
| 170 | slot->devfn, |
| 171 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 172 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | return -ENODEV; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 174 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | slot->devfn, |
| 176 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 177 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | return -ENODEV; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 179 | if (hs_csr & HS_CSR_EXT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | /* Clear EXT (by setting it) */ |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 181 | if (pci_bus_write_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | slot->devfn, |
| 183 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 184 | hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | int cpci_led_on(struct slot* slot) |
| 191 | { |
| 192 | int hs_cap; |
| 193 | u16 hs_csr; |
| 194 | |
| 195 | hs_cap = pci_bus_find_capability(slot->bus, |
| 196 | slot->devfn, |
| 197 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 198 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | return -ENODEV; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 200 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | slot->devfn, |
| 202 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 203 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | return -ENODEV; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 205 | if ((hs_csr & HS_CSR_LOO) != HS_CSR_LOO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | hs_csr |= HS_CSR_LOO; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 207 | if (pci_bus_write_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | slot->devfn, |
| 209 | hs_cap + 2, |
| 210 | hs_csr)) { |
| 211 | err("Could not set LOO for slot %s", |
Alex Chiang | d6c479e | 2008-10-20 17:41:17 -0600 | [diff] [blame] | 212 | hotplug_slot_name(slot->hotplug_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | return -ENODEV; |
| 214 | } |
| 215 | } |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | int cpci_led_off(struct slot* slot) |
| 220 | { |
| 221 | int hs_cap; |
| 222 | u16 hs_csr; |
| 223 | |
| 224 | hs_cap = pci_bus_find_capability(slot->bus, |
| 225 | slot->devfn, |
| 226 | PCI_CAP_ID_CHSWP); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 227 | if (!hs_cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | return -ENODEV; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 229 | if (pci_bus_read_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | slot->devfn, |
| 231 | hs_cap + 2, |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 232 | &hs_csr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | return -ENODEV; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 234 | if (hs_csr & HS_CSR_LOO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | hs_csr &= ~HS_CSR_LOO; |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 236 | if (pci_bus_write_config_word(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | slot->devfn, |
| 238 | hs_cap + 2, |
| 239 | hs_csr)) { |
| 240 | err("Could not clear LOO for slot %s", |
Alex Chiang | d6c479e | 2008-10-20 17:41:17 -0600 | [diff] [blame] | 241 | hotplug_slot_name(slot->hotplug_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | return -ENODEV; |
| 243 | } |
| 244 | } |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | |
| 249 | /* |
| 250 | * Device configuration functions |
| 251 | */ |
| 252 | |
Sam Ravnborg | 0ab2b57 | 2008-02-17 10:45:28 +0100 | [diff] [blame] | 253 | int __ref cpci_configure_slot(struct slot *slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | { |
Scott Murray | cc702c2 | 2006-08-22 19:55:57 -0400 | [diff] [blame] | 255 | struct pci_bus *parent; |
| 256 | int fn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 258 | dbg("%s - enter", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 260 | if (slot->dev == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | dbg("pci_dev null, finding %02x:%02x:%x", |
| 262 | slot->bus->number, PCI_SLOT(slot->devfn), PCI_FUNC(slot->devfn)); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 263 | slot->dev = pci_get_slot(slot->bus, slot->devfn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | /* Still NULL? Well then scan for it! */ |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 267 | if (slot->dev == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | int n; |
| 269 | dbg("pci_dev still null"); |
| 270 | |
| 271 | /* |
| 272 | * This will generate pci_dev structures for all functions, but |
| 273 | * we will only call this case when lookup fails. |
| 274 | */ |
| 275 | n = pci_scan_slot(slot->bus, slot->devfn); |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 276 | dbg("%s: pci_scan_slot returned %d", __func__, n); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 277 | slot->dev = pci_get_slot(slot->bus, slot->devfn); |
| 278 | if (slot->dev == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | err("Could not find PCI device for slot %02x", slot->number); |
Scott Murray | cc702c2 | 2006-08-22 19:55:57 -0400 | [diff] [blame] | 280 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | } |
| 282 | } |
Scott Murray | cc702c2 | 2006-08-22 19:55:57 -0400 | [diff] [blame] | 283 | parent = slot->dev->bus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
Scott Murray | cc702c2 | 2006-08-22 19:55:57 -0400 | [diff] [blame] | 285 | for (fn = 0; fn < 8; fn++) { |
| 286 | struct pci_dev *dev; |
| 287 | |
| 288 | dev = pci_get_slot(parent, PCI_DEVFN(PCI_SLOT(slot->devfn), fn)); |
| 289 | if (!dev) |
| 290 | continue; |
| 291 | if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) || |
| 292 | (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) { |
| 293 | /* Find an unused bus number for the new bridge */ |
| 294 | struct pci_bus *child; |
| 295 | unsigned char busnr, start = parent->secondary; |
| 296 | unsigned char end = parent->subordinate; |
| 297 | |
| 298 | for (busnr = start; busnr <= end; busnr++) { |
| 299 | if (!pci_find_bus(pci_domain_nr(parent), |
| 300 | busnr)) |
| 301 | break; |
| 302 | } |
| 303 | if (busnr >= end) { |
| 304 | err("No free bus for hot-added bridge\n"); |
| 305 | pci_dev_put(dev); |
| 306 | continue; |
| 307 | } |
| 308 | child = pci_add_new_bus(parent, dev, busnr); |
| 309 | if (!child) { |
| 310 | err("Cannot add new bus for %s\n", |
| 311 | pci_name(dev)); |
| 312 | pci_dev_put(dev); |
| 313 | continue; |
| 314 | } |
| 315 | child->subordinate = pci_do_scan_bus(child); |
| 316 | pci_bus_size_bridges(child); |
| 317 | } |
| 318 | pci_dev_put(dev); |
Scott Murray | 43b7d7c | 2005-05-09 17:31:50 -0400 | [diff] [blame] | 319 | } |
| 320 | |
Scott Murray | cc702c2 | 2006-08-22 19:55:57 -0400 | [diff] [blame] | 321 | pci_bus_assign_resources(parent); |
| 322 | pci_bus_add_devices(parent); |
| 323 | pci_enable_bridges(parent); |
Scott Murray | 43b7d7c | 2005-05-09 17:31:50 -0400 | [diff] [blame] | 324 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 325 | dbg("%s - exit", __func__); |
Scott Murray | 43b7d7c | 2005-05-09 17:31:50 -0400 | [diff] [blame] | 326 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | int cpci_unconfigure_slot(struct slot* slot) |
| 330 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | struct pci_dev *dev; |
| 333 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 334 | dbg("%s - enter", __func__); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 335 | if (!slot->dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | err("No device for slot %02x\n", slot->number); |
| 337 | return -ENODEV; |
| 338 | } |
| 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | for (i = 0; i < 8; i++) { |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 341 | dev = pci_get_slot(slot->bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | PCI_DEVFN(PCI_SLOT(slot->devfn), i)); |
Scott Murray | bcc488a | 2005-05-27 16:48:52 -0400 | [diff] [blame] | 343 | if (dev) { |
Scott Murray | 43b7d7c | 2005-05-09 17:31:50 -0400 | [diff] [blame] | 344 | pci_remove_bus_device(dev); |
Scott Murray | 03e49d4 | 2005-06-06 15:48:04 -0400 | [diff] [blame] | 345 | pci_dev_put(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | } |
| 347 | } |
Scott Murray | 03e49d4 | 2005-06-06 15:48:04 -0400 | [diff] [blame] | 348 | pci_dev_put(slot->dev); |
| 349 | slot->dev = NULL; |
| 350 | |
Harvey Harrison | 66bef8c | 2008-03-03 19:09:46 -0800 | [diff] [blame] | 351 | dbg("%s - exit", __func__); |
Scott Murray | 43b7d7c | 2005-05-09 17:31:50 -0400 | [diff] [blame] | 352 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | } |