Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 1 | /* |
| 2 | * PCI Backend - Functions for creating a virtual configuration space for |
| 3 | * exported PCI Devices. |
| 4 | * It's dangerous to allow PCI Driver Domains to change their |
| 5 | * device's resources (memory, i/o ports, interrupts). We need to |
| 6 | * restrict changes to certain PCI Configuration registers: |
| 7 | * BARs, INTERRUPT_PIN, most registers in the header... |
| 8 | * |
| 9 | * Author: Ryan Wilson <hap9@epoch.ncsc.mil> |
| 10 | */ |
| 11 | |
| 12 | #include <linux/kernel.h> |
Paul Gortmaker | 72ee511 | 2011-07-03 16:20:57 -0400 | [diff] [blame] | 13 | #include <linux/module.h> |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 14 | #include <linux/pci.h> |
| 15 | #include "pciback.h" |
| 16 | #include "conf_space.h" |
| 17 | #include "conf_space_quirks.h" |
| 18 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 19 | static bool permissive; |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 20 | module_param(permissive, bool, 0644); |
| 21 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 22 | /* This is where xen_pcibk_read_config_byte, xen_pcibk_read_config_word, |
| 23 | * xen_pcibk_write_config_word, and xen_pcibk_write_config_byte are created. */ |
Konrad Rzeszutek Wilk | 8bfd4e0 | 2011-07-19 20:09:43 -0400 | [diff] [blame] | 24 | #define DEFINE_PCI_CONFIG(op, size, type) \ |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 25 | int xen_pcibk_##op##_config_##size \ |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 26 | (struct pci_dev *dev, int offset, type value, void *data) \ |
| 27 | { \ |
| 28 | return pci_##op##_config_##size(dev, offset, value); \ |
| 29 | } |
| 30 | |
| 31 | DEFINE_PCI_CONFIG(read, byte, u8 *) |
| 32 | DEFINE_PCI_CONFIG(read, word, u16 *) |
| 33 | DEFINE_PCI_CONFIG(read, dword, u32 *) |
| 34 | |
| 35 | DEFINE_PCI_CONFIG(write, byte, u8) |
| 36 | DEFINE_PCI_CONFIG(write, word, u16) |
| 37 | DEFINE_PCI_CONFIG(write, dword, u32) |
| 38 | |
| 39 | static int conf_space_read(struct pci_dev *dev, |
| 40 | const struct config_field_entry *entry, |
| 41 | int offset, u32 *value) |
| 42 | { |
| 43 | int ret = 0; |
| 44 | const struct config_field *field = entry->field; |
| 45 | |
| 46 | *value = 0; |
| 47 | |
| 48 | switch (field->size) { |
| 49 | case 1: |
| 50 | if (field->u.b.read) |
| 51 | ret = field->u.b.read(dev, offset, (u8 *) value, |
| 52 | entry->data); |
| 53 | break; |
| 54 | case 2: |
| 55 | if (field->u.w.read) |
| 56 | ret = field->u.w.read(dev, offset, (u16 *) value, |
| 57 | entry->data); |
| 58 | break; |
| 59 | case 4: |
| 60 | if (field->u.dw.read) |
| 61 | ret = field->u.dw.read(dev, offset, value, entry->data); |
| 62 | break; |
| 63 | } |
| 64 | return ret; |
| 65 | } |
| 66 | |
| 67 | static int conf_space_write(struct pci_dev *dev, |
| 68 | const struct config_field_entry *entry, |
| 69 | int offset, u32 value) |
| 70 | { |
| 71 | int ret = 0; |
| 72 | const struct config_field *field = entry->field; |
| 73 | |
| 74 | switch (field->size) { |
| 75 | case 1: |
| 76 | if (field->u.b.write) |
| 77 | ret = field->u.b.write(dev, offset, (u8) value, |
| 78 | entry->data); |
| 79 | break; |
| 80 | case 2: |
| 81 | if (field->u.w.write) |
| 82 | ret = field->u.w.write(dev, offset, (u16) value, |
| 83 | entry->data); |
| 84 | break; |
| 85 | case 4: |
| 86 | if (field->u.dw.write) |
| 87 | ret = field->u.dw.write(dev, offset, value, |
| 88 | entry->data); |
| 89 | break; |
| 90 | } |
| 91 | return ret; |
| 92 | } |
| 93 | |
| 94 | static inline u32 get_mask(int size) |
| 95 | { |
| 96 | if (size == 1) |
| 97 | return 0xff; |
| 98 | else if (size == 2) |
| 99 | return 0xffff; |
| 100 | else |
| 101 | return 0xffffffff; |
| 102 | } |
| 103 | |
| 104 | static inline int valid_request(int offset, int size) |
| 105 | { |
| 106 | /* Validate request (no un-aligned requests) */ |
| 107 | if ((size == 1 || size == 2 || size == 4) && (offset % size) == 0) |
| 108 | return 1; |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static inline u32 merge_value(u32 val, u32 new_val, u32 new_val_mask, |
| 113 | int offset) |
| 114 | { |
| 115 | if (offset >= 0) { |
| 116 | new_val_mask <<= (offset * 8); |
| 117 | new_val <<= (offset * 8); |
| 118 | } else { |
| 119 | new_val_mask >>= (offset * -8); |
| 120 | new_val >>= (offset * -8); |
| 121 | } |
| 122 | val = (val & ~new_val_mask) | (new_val & new_val_mask); |
| 123 | |
| 124 | return val; |
| 125 | } |
| 126 | |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 127 | static int xen_pcibios_err_to_errno(int err) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 128 | { |
| 129 | switch (err) { |
| 130 | case PCIBIOS_SUCCESSFUL: |
| 131 | return XEN_PCI_ERR_success; |
| 132 | case PCIBIOS_DEVICE_NOT_FOUND: |
| 133 | return XEN_PCI_ERR_dev_not_found; |
| 134 | case PCIBIOS_BAD_REGISTER_NUMBER: |
| 135 | return XEN_PCI_ERR_invalid_offset; |
| 136 | case PCIBIOS_FUNC_NOT_SUPPORTED: |
| 137 | return XEN_PCI_ERR_not_implemented; |
| 138 | case PCIBIOS_SET_FAILED: |
| 139 | return XEN_PCI_ERR_access_denied; |
| 140 | } |
| 141 | return err; |
| 142 | } |
| 143 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 144 | int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size, |
| 145 | u32 *ret_val) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 146 | { |
| 147 | int err = 0; |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 148 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 149 | const struct config_field_entry *cfg_entry; |
| 150 | const struct config_field *field; |
| 151 | int req_start, req_end, field_start, field_end; |
| 152 | /* if read fails for any reason, return 0 |
| 153 | * (as if device didn't respond) */ |
| 154 | u32 value = 0, tmp_val; |
| 155 | |
| 156 | if (unlikely(verbose_request)) |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 157 | printk(KERN_DEBUG DRV_NAME ": %s: read %d bytes at 0x%x\n", |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 158 | pci_name(dev), size, offset); |
| 159 | |
| 160 | if (!valid_request(offset, size)) { |
| 161 | err = XEN_PCI_ERR_invalid_offset; |
| 162 | goto out; |
| 163 | } |
| 164 | |
| 165 | /* Get the real value first, then modify as appropriate */ |
| 166 | switch (size) { |
| 167 | case 1: |
| 168 | err = pci_read_config_byte(dev, offset, (u8 *) &value); |
| 169 | break; |
| 170 | case 2: |
| 171 | err = pci_read_config_word(dev, offset, (u16 *) &value); |
| 172 | break; |
| 173 | case 4: |
| 174 | err = pci_read_config_dword(dev, offset, &value); |
| 175 | break; |
| 176 | } |
| 177 | |
| 178 | list_for_each_entry(cfg_entry, &dev_data->config_fields, list) { |
| 179 | field = cfg_entry->field; |
| 180 | |
| 181 | req_start = offset; |
| 182 | req_end = offset + size; |
| 183 | field_start = OFFSET(cfg_entry); |
| 184 | field_end = OFFSET(cfg_entry) + field->size; |
| 185 | |
| 186 | if ((req_start >= field_start && req_start < field_end) |
| 187 | || (req_end > field_start && req_end <= field_end)) { |
| 188 | err = conf_space_read(dev, cfg_entry, field_start, |
| 189 | &tmp_val); |
| 190 | if (err) |
| 191 | goto out; |
| 192 | |
| 193 | value = merge_value(value, tmp_val, |
| 194 | get_mask(field->size), |
| 195 | field_start - req_start); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | out: |
| 200 | if (unlikely(verbose_request)) |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 201 | printk(KERN_DEBUG DRV_NAME ": %s: read %d bytes at 0x%x = %x\n", |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 202 | pci_name(dev), size, offset, value); |
| 203 | |
| 204 | *ret_val = value; |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 205 | return xen_pcibios_err_to_errno(err); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 206 | } |
| 207 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 208 | int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 209 | { |
| 210 | int err = 0, handled = 0; |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 211 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 212 | const struct config_field_entry *cfg_entry; |
| 213 | const struct config_field *field; |
| 214 | u32 tmp_val; |
| 215 | int req_start, req_end, field_start, field_end; |
| 216 | |
| 217 | if (unlikely(verbose_request)) |
| 218 | printk(KERN_DEBUG |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 219 | DRV_NAME ": %s: write request %d bytes at 0x%x = %x\n", |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 220 | pci_name(dev), size, offset, value); |
| 221 | |
| 222 | if (!valid_request(offset, size)) |
| 223 | return XEN_PCI_ERR_invalid_offset; |
| 224 | |
| 225 | list_for_each_entry(cfg_entry, &dev_data->config_fields, list) { |
| 226 | field = cfg_entry->field; |
| 227 | |
| 228 | req_start = offset; |
| 229 | req_end = offset + size; |
| 230 | field_start = OFFSET(cfg_entry); |
| 231 | field_end = OFFSET(cfg_entry) + field->size; |
| 232 | |
| 233 | if ((req_start >= field_start && req_start < field_end) |
| 234 | || (req_end > field_start && req_end <= field_end)) { |
| 235 | tmp_val = 0; |
| 236 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 237 | err = xen_pcibk_config_read(dev, field_start, |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 238 | field->size, &tmp_val); |
| 239 | if (err) |
| 240 | break; |
| 241 | |
| 242 | tmp_val = merge_value(tmp_val, value, get_mask(size), |
| 243 | req_start - field_start); |
| 244 | |
| 245 | err = conf_space_write(dev, cfg_entry, field_start, |
| 246 | tmp_val); |
| 247 | |
| 248 | /* handled is set true here, but not every byte |
| 249 | * may have been written! Properly detecting if |
| 250 | * every byte is handled is unnecessary as the |
| 251 | * flag is used to detect devices that need |
| 252 | * special helpers to work correctly. |
| 253 | */ |
| 254 | handled = 1; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | if (!handled && !err) { |
| 259 | /* By default, anything not specificially handled above is |
| 260 | * read-only. The permissive flag changes this behavior so |
| 261 | * that anything not specifically handled above is writable. |
| 262 | * This means that some fields may still be read-only because |
| 263 | * they have entries in the config_field list that intercept |
| 264 | * the write and do nothing. */ |
| 265 | if (dev_data->permissive || permissive) { |
| 266 | switch (size) { |
| 267 | case 1: |
| 268 | err = pci_write_config_byte(dev, offset, |
| 269 | (u8) value); |
| 270 | break; |
| 271 | case 2: |
| 272 | err = pci_write_config_word(dev, offset, |
| 273 | (u16) value); |
| 274 | break; |
| 275 | case 4: |
| 276 | err = pci_write_config_dword(dev, offset, |
| 277 | (u32) value); |
| 278 | break; |
| 279 | } |
| 280 | } else if (!dev_data->warned_on_write) { |
| 281 | dev_data->warned_on_write = 1; |
| 282 | dev_warn(&dev->dev, "Driver tried to write to a " |
| 283 | "read-only configuration space field at offset" |
| 284 | " 0x%x, size %d. This may be harmless, but if " |
| 285 | "you have problems with your device:\n" |
| 286 | "1) see permissive attribute in sysfs\n" |
| 287 | "2) report problems to the xen-devel " |
| 288 | "mailing list along with details of your " |
| 289 | "device obtained from lspci.\n", offset, size); |
| 290 | } |
| 291 | } |
| 292 | |
Alex Williamson | a696165 | 2012-06-11 05:27:33 +0000 | [diff] [blame] | 293 | return xen_pcibios_err_to_errno(err); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 294 | } |
| 295 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 296 | void xen_pcibk_config_free_dyn_fields(struct pci_dev *dev) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 297 | { |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 298 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 299 | struct config_field_entry *cfg_entry, *t; |
| 300 | const struct config_field *field; |
| 301 | |
| 302 | dev_dbg(&dev->dev, "free-ing dynamically allocated virtual " |
| 303 | "configuration space fields\n"); |
| 304 | if (!dev_data) |
| 305 | return; |
| 306 | |
| 307 | list_for_each_entry_safe(cfg_entry, t, &dev_data->config_fields, list) { |
| 308 | field = cfg_entry->field; |
| 309 | |
| 310 | if (field->clean) { |
| 311 | field->clean((struct config_field *)field); |
| 312 | |
| 313 | kfree(cfg_entry->data); |
| 314 | |
| 315 | list_del(&cfg_entry->list); |
| 316 | kfree(cfg_entry); |
| 317 | } |
| 318 | |
| 319 | } |
| 320 | } |
| 321 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 322 | void xen_pcibk_config_reset_dev(struct pci_dev *dev) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 323 | { |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 324 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 325 | const struct config_field_entry *cfg_entry; |
| 326 | const struct config_field *field; |
| 327 | |
| 328 | dev_dbg(&dev->dev, "resetting virtual configuration space\n"); |
| 329 | if (!dev_data) |
| 330 | return; |
| 331 | |
| 332 | list_for_each_entry(cfg_entry, &dev_data->config_fields, list) { |
| 333 | field = cfg_entry->field; |
| 334 | |
| 335 | if (field->reset) |
| 336 | field->reset(dev, OFFSET(cfg_entry), cfg_entry->data); |
| 337 | } |
| 338 | } |
| 339 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 340 | void xen_pcibk_config_free_dev(struct pci_dev *dev) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 341 | { |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 342 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 343 | struct config_field_entry *cfg_entry, *t; |
| 344 | const struct config_field *field; |
| 345 | |
| 346 | dev_dbg(&dev->dev, "free-ing virtual configuration space fields\n"); |
| 347 | if (!dev_data) |
| 348 | return; |
| 349 | |
| 350 | list_for_each_entry_safe(cfg_entry, t, &dev_data->config_fields, list) { |
| 351 | list_del(&cfg_entry->list); |
| 352 | |
| 353 | field = cfg_entry->field; |
| 354 | |
| 355 | if (field->release) |
| 356 | field->release(dev, OFFSET(cfg_entry), cfg_entry->data); |
| 357 | |
| 358 | kfree(cfg_entry); |
| 359 | } |
| 360 | } |
| 361 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 362 | int xen_pcibk_config_add_field_offset(struct pci_dev *dev, |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 363 | const struct config_field *field, |
| 364 | unsigned int base_offset) |
| 365 | { |
| 366 | int err = 0; |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 367 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 368 | struct config_field_entry *cfg_entry; |
| 369 | void *tmp; |
| 370 | |
| 371 | cfg_entry = kmalloc(sizeof(*cfg_entry), GFP_KERNEL); |
| 372 | if (!cfg_entry) { |
| 373 | err = -ENOMEM; |
| 374 | goto out; |
| 375 | } |
| 376 | |
| 377 | cfg_entry->data = NULL; |
| 378 | cfg_entry->field = field; |
| 379 | cfg_entry->base_offset = base_offset; |
| 380 | |
| 381 | /* silently ignore duplicate fields */ |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 382 | err = xen_pcibk_field_is_dup(dev, OFFSET(cfg_entry)); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 383 | if (err) |
| 384 | goto out; |
| 385 | |
| 386 | if (field->init) { |
| 387 | tmp = field->init(dev, OFFSET(cfg_entry)); |
| 388 | |
| 389 | if (IS_ERR(tmp)) { |
| 390 | err = PTR_ERR(tmp); |
| 391 | goto out; |
| 392 | } |
| 393 | |
| 394 | cfg_entry->data = tmp; |
| 395 | } |
| 396 | |
| 397 | dev_dbg(&dev->dev, "added config field at offset 0x%02x\n", |
| 398 | OFFSET(cfg_entry)); |
| 399 | list_add_tail(&cfg_entry->list, &dev_data->config_fields); |
| 400 | |
| 401 | out: |
| 402 | if (err) |
| 403 | kfree(cfg_entry); |
| 404 | |
| 405 | return err; |
| 406 | } |
| 407 | |
| 408 | /* This sets up the device's virtual configuration space to keep track of |
| 409 | * certain registers (like the base address registers (BARs) so that we can |
| 410 | * keep the client from manipulating them directly. |
| 411 | */ |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 412 | int xen_pcibk_config_init_dev(struct pci_dev *dev) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 413 | { |
| 414 | int err = 0; |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 415 | struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 416 | |
| 417 | dev_dbg(&dev->dev, "initializing virtual configuration space\n"); |
| 418 | |
| 419 | INIT_LIST_HEAD(&dev_data->config_fields); |
| 420 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 421 | err = xen_pcibk_config_header_add_fields(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 422 | if (err) |
| 423 | goto out; |
| 424 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 425 | err = xen_pcibk_config_capability_add_fields(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 426 | if (err) |
| 427 | goto out; |
| 428 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 429 | err = xen_pcibk_config_quirks_init(dev); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 430 | |
| 431 | out: |
| 432 | return err; |
| 433 | } |
| 434 | |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 435 | int xen_pcibk_config_init(void) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 436 | { |
Konrad Rzeszutek Wilk | a92336a | 2011-07-19 19:40:51 -0400 | [diff] [blame] | 437 | return xen_pcibk_config_capability_init(); |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 438 | } |