Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * drivers/pci/pci-driver.c |
| 3 | * |
Greg Kroah-Hartman | 2b93730 | 2007-11-28 12:23:18 -0800 | [diff] [blame] | 4 | * (C) Copyright 2002-2004, 2007 Greg Kroah-Hartman <greg@kroah.com> |
| 5 | * (C) Copyright 2007 Novell Inc. |
| 6 | * |
| 7 | * Released under the GPL v2 only. |
| 8 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #include <linux/pci.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/device.h> |
Andi Kleen | d42c699 | 2005-07-06 19:56:03 +0200 | [diff] [blame] | 15 | #include <linux/mempolicy.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 16 | #include <linux/string.h> |
| 17 | #include <linux/slab.h> |
Tim Schmielau | 8c65b4a | 2005-11-07 00:59:43 -0800 | [diff] [blame] | 18 | #include <linux/sched.h> |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 19 | #include <linux/cpu.h> |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 20 | #include <linux/pm_runtime.h> |
Rafael J. Wysocki | eea3fc03 | 2011-07-06 10:51:40 +0200 | [diff] [blame] | 21 | #include <linux/suspend.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include "pci.h" |
| 23 | |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 24 | struct pci_dynid { |
| 25 | struct list_head node; |
| 26 | struct pci_device_id id; |
| 27 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | /** |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 30 | * pci_add_dynid - add a new PCI device ID to this driver and re-probe devices |
| 31 | * @drv: target pci driver |
| 32 | * @vendor: PCI vendor ID |
| 33 | * @device: PCI device ID |
| 34 | * @subvendor: PCI subvendor ID |
| 35 | * @subdevice: PCI subdevice ID |
| 36 | * @class: PCI class |
| 37 | * @class_mask: PCI class mask |
| 38 | * @driver_data: private driver data |
| 39 | * |
| 40 | * Adds a new dynamic pci device ID to this driver and causes the |
| 41 | * driver to probe for all devices again. @drv must have been |
| 42 | * registered prior to calling this function. |
| 43 | * |
| 44 | * CONTEXT: |
| 45 | * Does GFP_KERNEL allocation. |
| 46 | * |
| 47 | * RETURNS: |
| 48 | * 0 on success, -errno on failure. |
| 49 | */ |
| 50 | int pci_add_dynid(struct pci_driver *drv, |
| 51 | unsigned int vendor, unsigned int device, |
| 52 | unsigned int subvendor, unsigned int subdevice, |
| 53 | unsigned int class, unsigned int class_mask, |
| 54 | unsigned long driver_data) |
| 55 | { |
| 56 | struct pci_dynid *dynid; |
| 57 | int retval; |
| 58 | |
| 59 | dynid = kzalloc(sizeof(*dynid), GFP_KERNEL); |
| 60 | if (!dynid) |
| 61 | return -ENOMEM; |
| 62 | |
| 63 | dynid->id.vendor = vendor; |
| 64 | dynid->id.device = device; |
| 65 | dynid->id.subvendor = subvendor; |
| 66 | dynid->id.subdevice = subdevice; |
| 67 | dynid->id.class = class; |
| 68 | dynid->id.class_mask = class_mask; |
| 69 | dynid->id.driver_data = driver_data; |
| 70 | |
| 71 | spin_lock(&drv->dynids.lock); |
| 72 | list_add_tail(&dynid->node, &drv->dynids.list); |
| 73 | spin_unlock(&drv->dynids.lock); |
| 74 | |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 75 | retval = driver_attach(&drv->driver); |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 76 | |
| 77 | return retval; |
| 78 | } |
| 79 | |
| 80 | static void pci_free_dynids(struct pci_driver *drv) |
| 81 | { |
| 82 | struct pci_dynid *dynid, *n; |
| 83 | |
| 84 | spin_lock(&drv->dynids.lock); |
| 85 | list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { |
| 86 | list_del(&dynid->node); |
| 87 | kfree(dynid); |
| 88 | } |
| 89 | spin_unlock(&drv->dynids.lock); |
| 90 | } |
| 91 | |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 92 | /** |
| 93 | * store_new_id - sysfs frontend to pci_add_dynid() |
Randy Dunlap | 8f7020d | 2005-10-23 11:57:38 -0700 | [diff] [blame] | 94 | * @driver: target device driver |
| 95 | * @buf: buffer for scanning device ID data |
| 96 | * @count: input size |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | * |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 98 | * Allow PCI IDs to be added to an existing driver via sysfs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | */ |
Randy Dunlap | f8eb100 | 2005-10-28 20:36:51 -0700 | [diff] [blame] | 100 | static ssize_t |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | store_new_id(struct device_driver *driver, const char *buf, size_t count) |
| 102 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | struct pci_driver *pdrv = to_pci_driver(driver); |
Jean Delvare | b41d6cf | 2008-08-17 21:06:59 +0200 | [diff] [blame] | 104 | const struct pci_device_id *ids = pdrv->id_table; |
Jean Delvare | 6ba1863 | 2007-04-07 17:21:28 +0200 | [diff] [blame] | 105 | __u32 vendor, device, subvendor=PCI_ANY_ID, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | subdevice=PCI_ANY_ID, class=0, class_mask=0; |
| 107 | unsigned long driver_data=0; |
| 108 | int fields=0; |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 109 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Jean Delvare | b41d6cf | 2008-08-17 21:06:59 +0200 | [diff] [blame] | 111 | fields = sscanf(buf, "%x %x %x %x %x %x %lx", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | &vendor, &device, &subvendor, &subdevice, |
| 113 | &class, &class_mask, &driver_data); |
Jean Delvare | 6ba1863 | 2007-04-07 17:21:28 +0200 | [diff] [blame] | 114 | if (fields < 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return -EINVAL; |
| 116 | |
Jean Delvare | b41d6cf | 2008-08-17 21:06:59 +0200 | [diff] [blame] | 117 | /* Only accept driver_data values that match an existing id_table |
| 118 | entry */ |
Chris Wright | 2debb4d | 2008-11-25 19:36:10 -0800 | [diff] [blame] | 119 | if (ids) { |
| 120 | retval = -EINVAL; |
| 121 | while (ids->vendor || ids->subvendor || ids->class_mask) { |
| 122 | if (driver_data == ids->driver_data) { |
| 123 | retval = 0; |
| 124 | break; |
| 125 | } |
| 126 | ids++; |
Jean Delvare | b41d6cf | 2008-08-17 21:06:59 +0200 | [diff] [blame] | 127 | } |
Chris Wright | 2debb4d | 2008-11-25 19:36:10 -0800 | [diff] [blame] | 128 | if (retval) /* No match */ |
| 129 | return retval; |
Jean Delvare | b41d6cf | 2008-08-17 21:06:59 +0200 | [diff] [blame] | 130 | } |
Jean Delvare | b41d6cf | 2008-08-17 21:06:59 +0200 | [diff] [blame] | 131 | |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 132 | retval = pci_add_dynid(pdrv, vendor, device, subvendor, subdevice, |
| 133 | class, class_mask, driver_data); |
Greg Kroah-Hartman | b19441a | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 134 | if (retval) |
| 135 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | return count; |
| 137 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Chris Wright | 0994375 | 2009-02-23 21:52:23 -0800 | [diff] [blame] | 139 | /** |
| 140 | * store_remove_id - remove a PCI device ID from this driver |
| 141 | * @driver: target device driver |
| 142 | * @buf: buffer for scanning device ID data |
| 143 | * @count: input size |
| 144 | * |
| 145 | * Removes a dynamic pci device ID to this driver. |
| 146 | */ |
| 147 | static ssize_t |
| 148 | store_remove_id(struct device_driver *driver, const char *buf, size_t count) |
| 149 | { |
| 150 | struct pci_dynid *dynid, *n; |
| 151 | struct pci_driver *pdrv = to_pci_driver(driver); |
| 152 | __u32 vendor, device, subvendor = PCI_ANY_ID, |
| 153 | subdevice = PCI_ANY_ID, class = 0, class_mask = 0; |
| 154 | int fields = 0; |
| 155 | int retval = -ENODEV; |
| 156 | |
| 157 | fields = sscanf(buf, "%x %x %x %x %x %x", |
| 158 | &vendor, &device, &subvendor, &subdevice, |
| 159 | &class, &class_mask); |
| 160 | if (fields < 2) |
| 161 | return -EINVAL; |
| 162 | |
| 163 | spin_lock(&pdrv->dynids.lock); |
| 164 | list_for_each_entry_safe(dynid, n, &pdrv->dynids.list, node) { |
| 165 | struct pci_device_id *id = &dynid->id; |
| 166 | if ((id->vendor == vendor) && |
| 167 | (id->device == device) && |
| 168 | (subvendor == PCI_ANY_ID || id->subvendor == subvendor) && |
| 169 | (subdevice == PCI_ANY_ID || id->subdevice == subdevice) && |
| 170 | !((id->class ^ class) & class_mask)) { |
| 171 | list_del(&dynid->node); |
| 172 | kfree(dynid); |
| 173 | retval = 0; |
| 174 | break; |
| 175 | } |
| 176 | } |
| 177 | spin_unlock(&pdrv->dynids.lock); |
| 178 | |
| 179 | if (retval) |
| 180 | return retval; |
| 181 | return count; |
| 182 | } |
Chris Wright | 0994375 | 2009-02-23 21:52:23 -0800 | [diff] [blame] | 183 | |
Konstantin Khlebnikov | bfb09a8 | 2012-08-08 14:47:51 +0400 | [diff] [blame] | 184 | static struct driver_attribute pci_drv_attrs[] = { |
| 185 | __ATTR(new_id, S_IWUSR, NULL, store_new_id), |
| 186 | __ATTR(remove_id, S_IWUSR, NULL, store_remove_id), |
| 187 | __ATTR_NULL, |
| 188 | }; |
Alan Stern | ed283e9 | 2012-01-24 14:35:13 -0500 | [diff] [blame] | 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | /** |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 191 | * pci_match_id - See if a pci device matches a given pci_id table |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | * @ids: array of PCI device id structures to search in |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 193 | * @dev: the PCI device structure to match against. |
| 194 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | * Used by a driver to check whether a PCI device present in the |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 196 | * system is in its list of supported devices. Returns the matching |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | * pci_device_id structure or %NULL if there is no match. |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 198 | * |
Randy Dunlap | 8b60756 | 2007-05-09 07:19:14 +0200 | [diff] [blame] | 199 | * Deprecated, don't use this as it will not catch any dynamic ids |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 200 | * that a driver might want to check for. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | */ |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 202 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
| 203 | struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 205 | if (ids) { |
| 206 | while (ids->vendor || ids->subvendor || ids->class_mask) { |
| 207 | if (pci_match_one_device(ids, dev)) |
| 208 | return ids; |
| 209 | ids++; |
| 210 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | return NULL; |
| 213 | } |
| 214 | |
| 215 | /** |
Randy Dunlap | ae9608a | 2007-01-09 21:41:01 -0800 | [diff] [blame] | 216 | * pci_match_device - Tell if a PCI device structure has a matching PCI device id structure |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 217 | * @drv: the PCI driver to match against |
Henrik Kretzschmar | 39ba487 | 2006-08-15 10:57:16 +0200 | [diff] [blame] | 218 | * @dev: the PCI device structure to match against |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 219 | * |
| 220 | * Used by a driver to check whether a PCI device present in the |
| 221 | * system is in its list of supported devices. Returns the matching |
| 222 | * pci_device_id structure or %NULL if there is no match. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | */ |
Adrian Bunk | d73460d | 2007-10-24 18:27:18 +0200 | [diff] [blame] | 224 | static const struct pci_device_id *pci_match_device(struct pci_driver *drv, |
| 225 | struct pci_dev *dev) |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 226 | { |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 227 | struct pci_dynid *dynid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
Russell King | 7461b60 | 2006-11-29 21:18:04 +0000 | [diff] [blame] | 229 | /* Look at the dynamic ids first, before the static ones */ |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 230 | spin_lock(&drv->dynids.lock); |
| 231 | list_for_each_entry(dynid, &drv->dynids.list, node) { |
| 232 | if (pci_match_one_device(&dynid->id, dev)) { |
| 233 | spin_unlock(&drv->dynids.lock); |
| 234 | return &dynid->id; |
| 235 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | } |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 237 | spin_unlock(&drv->dynids.lock); |
Russell King | 7461b60 | 2006-11-29 21:18:04 +0000 | [diff] [blame] | 238 | |
| 239 | return pci_match_id(drv->id_table, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 242 | struct drv_dev_and_id { |
| 243 | struct pci_driver *drv; |
| 244 | struct pci_dev *dev; |
| 245 | const struct pci_device_id *id; |
| 246 | }; |
| 247 | |
| 248 | static long local_pci_probe(void *_ddi) |
| 249 | { |
| 250 | struct drv_dev_and_id *ddi = _ddi; |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 251 | struct pci_dev *pci_dev = ddi->dev; |
| 252 | struct pci_driver *pci_drv = ddi->drv; |
| 253 | struct device *dev = &pci_dev->dev; |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 254 | int rc; |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 255 | |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 256 | /* |
| 257 | * Unbound PCI devices are always put in D0, regardless of |
| 258 | * runtime PM status. During probe, the device is set to |
| 259 | * active and the usage count is incremented. If the driver |
| 260 | * supports runtime PM, it should call pm_runtime_put_noidle() |
| 261 | * in its probe routine and pm_runtime_get_noresume() in its |
| 262 | * remove routine. |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 263 | */ |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 264 | pm_runtime_get_sync(dev); |
| 265 | pci_dev->driver = pci_drv; |
| 266 | rc = pci_drv->probe(pci_dev, ddi->id); |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 267 | if (rc) { |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 268 | pci_dev->driver = NULL; |
| 269 | pm_runtime_put_sync(dev); |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 270 | } |
| 271 | return rc; |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 272 | } |
| 273 | |
Andi Kleen | d42c699 | 2005-07-06 19:56:03 +0200 | [diff] [blame] | 274 | static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev, |
| 275 | const struct pci_device_id *id) |
| 276 | { |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 277 | int error, node; |
| 278 | struct drv_dev_and_id ddi = { drv, dev, id }; |
Mike Travis | f70316d | 2008-04-04 18:11:06 -0700 | [diff] [blame] | 279 | |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 280 | /* Execute driver initialization on node where the device's |
| 281 | bus is attached to. This way the driver likely allocates |
| 282 | its local memory on the right node without any need to |
| 283 | change it. */ |
| 284 | node = dev_to_node(&dev->dev); |
Mike Travis | f70316d | 2008-04-04 18:11:06 -0700 | [diff] [blame] | 285 | if (node >= 0) { |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 286 | int cpu; |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 287 | |
| 288 | get_online_cpus(); |
Rusty Russell | a70f730 | 2009-03-13 14:49:46 +1030 | [diff] [blame] | 289 | cpu = cpumask_any_and(cpumask_of_node(node), cpu_online_mask); |
Rusty Russell | 873392c | 2008-12-31 23:54:56 +1030 | [diff] [blame] | 290 | if (cpu < nr_cpu_ids) |
| 291 | error = work_on_cpu(cpu, local_pci_probe, &ddi); |
| 292 | else |
| 293 | error = local_pci_probe(&ddi); |
| 294 | put_online_cpus(); |
| 295 | } else |
| 296 | error = local_pci_probe(&ddi); |
Andi Kleen | d42c699 | 2005-07-06 19:56:03 +0200 | [diff] [blame] | 297 | return error; |
| 298 | } |
| 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | /** |
Randy Dunlap | 23ea379 | 2010-11-18 15:02:31 -0800 | [diff] [blame] | 301 | * __pci_device_probe - check if a driver wants to claim a specific PCI device |
Randy Dunlap | 8f7020d | 2005-10-23 11:57:38 -0700 | [diff] [blame] | 302 | * @drv: driver to call to check if it wants the PCI device |
| 303 | * @pci_dev: PCI device being probed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | * |
Randy Dunlap | 8f7020d | 2005-10-23 11:57:38 -0700 | [diff] [blame] | 305 | * returns 0 on success, else error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | * side-effect: pci_dev->driver is set to drv when drv claims pci_dev. |
| 307 | */ |
| 308 | static int |
| 309 | __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev) |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 310 | { |
| 311 | const struct pci_device_id *id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | int error = 0; |
| 313 | |
| 314 | if (!pci_dev->driver && drv->probe) { |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 315 | error = -ENODEV; |
| 316 | |
| 317 | id = pci_match_device(drv, pci_dev); |
| 318 | if (id) |
Andi Kleen | d42c699 | 2005-07-06 19:56:03 +0200 | [diff] [blame] | 319 | error = pci_call_probe(drv, pci_dev, id); |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 320 | if (error >= 0) |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 321 | error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | } |
| 323 | return error; |
| 324 | } |
| 325 | |
| 326 | static int pci_device_probe(struct device * dev) |
| 327 | { |
| 328 | int error = 0; |
| 329 | struct pci_driver *drv; |
| 330 | struct pci_dev *pci_dev; |
| 331 | |
| 332 | drv = to_pci_driver(dev->driver); |
| 333 | pci_dev = to_pci_dev(dev); |
| 334 | pci_dev_get(pci_dev); |
| 335 | error = __pci_device_probe(drv, pci_dev); |
| 336 | if (error) |
| 337 | pci_dev_put(pci_dev); |
| 338 | |
| 339 | return error; |
| 340 | } |
| 341 | |
| 342 | static int pci_device_remove(struct device * dev) |
| 343 | { |
| 344 | struct pci_dev * pci_dev = to_pci_dev(dev); |
| 345 | struct pci_driver * drv = pci_dev->driver; |
| 346 | |
| 347 | if (drv) { |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 348 | if (drv->remove) { |
| 349 | pm_runtime_get_sync(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | drv->remove(pci_dev); |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 351 | pm_runtime_put_noidle(dev); |
| 352 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | pci_dev->driver = NULL; |
| 354 | } |
| 355 | |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 356 | /* Undo the runtime PM settings in local_pci_probe() */ |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 357 | pm_runtime_put_sync(dev); |
Alan Stern | f3ec4f8 | 2010-06-08 15:23:51 -0400 | [diff] [blame] | 358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | /* |
Shaohua Li | 2449e06 | 2006-10-20 14:45:32 -0700 | [diff] [blame] | 360 | * If the device is still on, set the power state as "unknown", |
| 361 | * since it might change by the next time we load the driver. |
| 362 | */ |
| 363 | if (pci_dev->current_state == PCI_D0) |
| 364 | pci_dev->current_state = PCI_UNKNOWN; |
| 365 | |
| 366 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | * We would love to complain here if pci_dev->is_enabled is set, that |
| 368 | * the driver should have called pci_disable_device(), but the |
| 369 | * unfortunate fact is there are too many odd BIOS and bridge setups |
| 370 | * that don't like drivers doing that all of the time. |
| 371 | * Oh well, we can dream of sane hardware when we sleep, no matter how |
| 372 | * horrible the crap we have to deal with is when we are awake... |
| 373 | */ |
| 374 | |
| 375 | pci_dev_put(pci_dev); |
| 376 | return 0; |
| 377 | } |
| 378 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 379 | static void pci_device_shutdown(struct device *dev) |
| 380 | { |
| 381 | struct pci_dev *pci_dev = to_pci_dev(dev); |
| 382 | struct pci_driver *drv = pci_dev->driver; |
| 383 | |
Huang Ying | 3ff2de9 | 2012-10-24 14:54:14 +0800 | [diff] [blame] | 384 | pm_runtime_resume(dev); |
| 385 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 386 | if (drv && drv->shutdown) |
| 387 | drv->shutdown(pci_dev); |
| 388 | pci_msi_shutdown(pci_dev); |
| 389 | pci_msix_shutdown(pci_dev); |
Rafael J. Wysocki | 5b415f1 | 2012-02-07 00:50:35 +0100 | [diff] [blame] | 390 | |
| 391 | /* |
Khalid Aziz | b566a22 | 2012-04-27 13:00:33 -0600 | [diff] [blame] | 392 | * Turn off Bus Master bit on the device to tell it to not |
| 393 | * continue to do DMA |
| 394 | */ |
| 395 | pci_disable_device(pci_dev); |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 396 | } |
| 397 | |
Rafael J. Wysocki | aa33860 | 2011-02-11 00:06:54 +0100 | [diff] [blame] | 398 | #ifdef CONFIG_PM |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 399 | |
| 400 | /* Auxiliary functions used for system resume and run-time resume. */ |
| 401 | |
| 402 | /** |
| 403 | * pci_restore_standard_config - restore standard config registers of PCI device |
| 404 | * @pci_dev: PCI device to handle |
| 405 | */ |
| 406 | static int pci_restore_standard_config(struct pci_dev *pci_dev) |
| 407 | { |
| 408 | pci_update_current_state(pci_dev, PCI_UNKNOWN); |
| 409 | |
| 410 | if (pci_dev->current_state != PCI_D0) { |
| 411 | int error = pci_set_power_state(pci_dev, PCI_D0); |
| 412 | if (error) |
| 413 | return error; |
| 414 | } |
| 415 | |
Jon Mason | 1d3c16a | 2010-11-30 17:43:26 -0600 | [diff] [blame] | 416 | pci_restore_state(pci_dev); |
| 417 | return 0; |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 418 | } |
| 419 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 420 | #endif |
| 421 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 422 | #ifdef CONFIG_PM_SLEEP |
| 423 | |
Rafael J. Wysocki | db288c9 | 2012-07-05 15:20:00 -0600 | [diff] [blame] | 424 | static void pci_pm_default_resume_early(struct pci_dev *pci_dev) |
| 425 | { |
| 426 | pci_power_up(pci_dev); |
| 427 | pci_restore_state(pci_dev); |
| 428 | pci_fixup_device(pci_fixup_resume_early, pci_dev); |
| 429 | } |
| 430 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 431 | /* |
| 432 | * Default "suspend" method for devices that have no driver provided suspend, |
Rafael J. Wysocki | fa58d30 | 2009-01-07 13:03:42 +0100 | [diff] [blame] | 433 | * or not even a driver at all (second part). |
| 434 | */ |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 435 | static void pci_pm_set_unknown_state(struct pci_dev *pci_dev) |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 436 | { |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 437 | /* |
| 438 | * mark its power state as "unknown", since we don't know if |
| 439 | * e.g. the BIOS will change its device state when we suspend. |
| 440 | */ |
| 441 | if (pci_dev->current_state == PCI_D0) |
| 442 | pci_dev->current_state = PCI_UNKNOWN; |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * Default "resume" method for devices that have no driver provided resume, |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 447 | * or not even a driver at all (second part). |
| 448 | */ |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 449 | static int pci_pm_reenable_device(struct pci_dev *pci_dev) |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 450 | { |
| 451 | int retval; |
| 452 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 453 | /* if the device was enabled before suspend, reenable */ |
| 454 | retval = pci_reenable_device(pci_dev); |
| 455 | /* |
| 456 | * if the device was busmaster before the suspend, make it busmaster |
| 457 | * again |
| 458 | */ |
| 459 | if (pci_dev->is_busmaster) |
| 460 | pci_set_master(pci_dev); |
| 461 | |
| 462 | return retval; |
| 463 | } |
| 464 | |
| 465 | static int pci_legacy_suspend(struct device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | { |
| 467 | struct pci_dev * pci_dev = to_pci_dev(dev); |
| 468 | struct pci_driver * drv = pci_dev->driver; |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 469 | |
Andrew Morton | 0266949 | 2006-03-23 01:38:34 -0800 | [diff] [blame] | 470 | if (drv && drv->suspend) { |
Rafael J. Wysocki | 99dadce | 2009-02-04 01:59:09 +0100 | [diff] [blame] | 471 | pci_power_t prev = pci_dev->current_state; |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 472 | int error; |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 473 | |
Frans Pop | 57ef802 | 2009-03-16 22:39:56 +0100 | [diff] [blame] | 474 | error = drv->suspend(pci_dev, state); |
| 475 | suspend_report_result(drv->suspend, error); |
| 476 | if (error) |
| 477 | return error; |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 478 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 479 | if (!pci_dev->state_saved && pci_dev->current_state != PCI_D0 |
Rafael J. Wysocki | 99dadce | 2009-02-04 01:59:09 +0100 | [diff] [blame] | 480 | && pci_dev->current_state != PCI_UNKNOWN) { |
| 481 | WARN_ONCE(pci_dev->current_state != prev, |
| 482 | "PCI PM: Device state not saved by %pF\n", |
| 483 | drv->suspend); |
Rafael J. Wysocki | 99dadce | 2009-02-04 01:59:09 +0100 | [diff] [blame] | 484 | } |
Andrew Morton | 0266949 | 2006-03-23 01:38:34 -0800 | [diff] [blame] | 485 | } |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 486 | |
| 487 | pci_fixup_device(pci_fixup_suspend, pci_dev); |
| 488 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 489 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | } |
| 491 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 492 | static int pci_legacy_suspend_late(struct device *dev, pm_message_t state) |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 493 | { |
| 494 | struct pci_dev * pci_dev = to_pci_dev(dev); |
| 495 | struct pci_driver * drv = pci_dev->driver; |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 496 | |
| 497 | if (drv && drv->suspend_late) { |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 498 | pci_power_t prev = pci_dev->current_state; |
| 499 | int error; |
| 500 | |
Frans Pop | 57ef802 | 2009-03-16 22:39:56 +0100 | [diff] [blame] | 501 | error = drv->suspend_late(pci_dev, state); |
| 502 | suspend_report_result(drv->suspend_late, error); |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 503 | if (error) |
| 504 | return error; |
| 505 | |
| 506 | if (!pci_dev->state_saved && pci_dev->current_state != PCI_D0 |
| 507 | && pci_dev->current_state != PCI_UNKNOWN) { |
| 508 | WARN_ONCE(pci_dev->current_state != prev, |
| 509 | "PCI PM: Device state not saved by %pF\n", |
| 510 | drv->suspend_late); |
| 511 | return 0; |
| 512 | } |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 513 | } |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 514 | |
| 515 | if (!pci_dev->state_saved) |
| 516 | pci_save_state(pci_dev); |
| 517 | |
| 518 | pci_pm_set_unknown_state(pci_dev); |
| 519 | |
| 520 | return 0; |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 521 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 523 | static int pci_legacy_resume_early(struct device *dev) |
| 524 | { |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 525 | struct pci_dev * pci_dev = to_pci_dev(dev); |
| 526 | struct pci_driver * drv = pci_dev->driver; |
| 527 | |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 528 | return drv && drv->resume_early ? |
| 529 | drv->resume_early(pci_dev) : 0; |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 530 | } |
| 531 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 532 | static int pci_legacy_resume(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | { |
| 534 | struct pci_dev * pci_dev = to_pci_dev(dev); |
| 535 | struct pci_driver * drv = pci_dev->driver; |
| 536 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 537 | pci_fixup_device(pci_fixup_resume, pci_dev); |
| 538 | |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 539 | return drv && drv->resume ? |
| 540 | drv->resume(pci_dev) : pci_pm_reenable_device(pci_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Rafael J. Wysocki | 571ff75 | 2009-01-07 13:05:05 +0100 | [diff] [blame] | 543 | /* Auxiliary functions used by the new power management framework */ |
| 544 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 545 | static void pci_pm_default_resume(struct pci_dev *pci_dev) |
Rafael J. Wysocki | 571ff75 | 2009-01-07 13:05:05 +0100 | [diff] [blame] | 546 | { |
Rafael J. Wysocki | 73410429 | 2009-01-07 13:07:15 +0100 | [diff] [blame] | 547 | pci_fixup_device(pci_fixup_resume, pci_dev); |
| 548 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 549 | if (!pci_is_bridge(pci_dev)) |
| 550 | pci_enable_wake(pci_dev, PCI_D0, false); |
Rafael J. Wysocki | 571ff75 | 2009-01-07 13:05:05 +0100 | [diff] [blame] | 551 | } |
| 552 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 553 | static void pci_pm_default_suspend(struct pci_dev *pci_dev) |
Rafael J. Wysocki | 73410429 | 2009-01-07 13:07:15 +0100 | [diff] [blame] | 554 | { |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 555 | /* Disable non-bridge devices without PM support */ |
Rafael J. Wysocki | cbbc2f6 | 2009-02-04 02:01:15 +0100 | [diff] [blame] | 556 | if (!pci_is_bridge(pci_dev)) |
| 557 | pci_disable_enabled_device(pci_dev); |
Rafael J. Wysocki | 73410429 | 2009-01-07 13:07:15 +0100 | [diff] [blame] | 558 | } |
| 559 | |
Rafael J. Wysocki | 07e836e | 2009-01-07 13:06:10 +0100 | [diff] [blame] | 560 | static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev) |
| 561 | { |
| 562 | struct pci_driver *drv = pci_dev->driver; |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 563 | bool ret = drv && (drv->suspend || drv->suspend_late || drv->resume |
Rafael J. Wysocki | 07e836e | 2009-01-07 13:06:10 +0100 | [diff] [blame] | 564 | || drv->resume_early); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 565 | |
| 566 | /* |
| 567 | * Legacy PM support is used by default, so warn if the new framework is |
| 568 | * supported as well. Drivers are supposed to support either the |
| 569 | * former, or the latter, but not both at the same time. |
| 570 | */ |
David Fries | 82440a8 | 2011-11-20 15:29:46 -0600 | [diff] [blame] | 571 | WARN(ret && drv->driver.pm, "driver %s device %04x:%04x\n", |
| 572 | drv->name, pci_dev->vendor, pci_dev->device); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 573 | |
| 574 | return ret; |
Rafael J. Wysocki | 07e836e | 2009-01-07 13:06:10 +0100 | [diff] [blame] | 575 | } |
| 576 | |
Rafael J. Wysocki | 571ff75 | 2009-01-07 13:05:05 +0100 | [diff] [blame] | 577 | /* New power management framework */ |
| 578 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 579 | static int pci_pm_prepare(struct device *dev) |
| 580 | { |
| 581 | struct device_driver *drv = dev->driver; |
| 582 | int error = 0; |
| 583 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 584 | /* |
| 585 | * PCI devices suspended at run time need to be resumed at this |
| 586 | * point, because in general it is necessary to reconfigure them for |
| 587 | * system suspend. Namely, if the device is supposed to wake up the |
| 588 | * system from the sleep state, we may need to reconfigure it for this |
| 589 | * purpose. In turn, if the device is not supposed to wake up the |
| 590 | * system from the sleep state, we'll have to prevent it from signaling |
| 591 | * wake-up. |
| 592 | */ |
Rafael J. Wysocki | eea3fc03 | 2011-07-06 10:51:40 +0200 | [diff] [blame] | 593 | pm_runtime_resume(dev); |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 594 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 595 | if (drv && drv->pm && drv->pm->prepare) |
| 596 | error = drv->pm->prepare(dev); |
| 597 | |
| 598 | return error; |
| 599 | } |
| 600 | |
| 601 | static void pci_pm_complete(struct device *dev) |
| 602 | { |
| 603 | struct device_driver *drv = dev->driver; |
| 604 | |
| 605 | if (drv && drv->pm && drv->pm->complete) |
| 606 | drv->pm->complete(dev); |
| 607 | } |
| 608 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 609 | #else /* !CONFIG_PM_SLEEP */ |
| 610 | |
| 611 | #define pci_pm_prepare NULL |
| 612 | #define pci_pm_complete NULL |
| 613 | |
| 614 | #endif /* !CONFIG_PM_SLEEP */ |
| 615 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 616 | #ifdef CONFIG_SUSPEND |
| 617 | |
| 618 | static int pci_pm_suspend(struct device *dev) |
| 619 | { |
| 620 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 621 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 622 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 623 | if (pci_has_legacy_pm_support(pci_dev)) |
| 624 | return pci_legacy_suspend(dev, PMSG_SUSPEND); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 625 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 626 | if (!pm) { |
| 627 | pci_pm_default_suspend(pci_dev); |
| 628 | goto Fixup; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 629 | } |
Rafael J. Wysocki | fa58d30 | 2009-01-07 13:03:42 +0100 | [diff] [blame] | 630 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 631 | if (pm->suspend) { |
| 632 | pci_power_t prev = pci_dev->current_state; |
| 633 | int error; |
| 634 | |
| 635 | error = pm->suspend(dev); |
| 636 | suspend_report_result(pm->suspend, error); |
| 637 | if (error) |
| 638 | return error; |
| 639 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 640 | if (!pci_dev->state_saved && pci_dev->current_state != PCI_D0 |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 641 | && pci_dev->current_state != PCI_UNKNOWN) { |
| 642 | WARN_ONCE(pci_dev->current_state != prev, |
| 643 | "PCI PM: State of device not saved by %pF\n", |
| 644 | pm->suspend); |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 645 | } |
| 646 | } |
| 647 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 648 | Fixup: |
| 649 | pci_fixup_device(pci_fixup_suspend, pci_dev); |
| 650 | |
| 651 | return 0; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | static int pci_pm_suspend_noirq(struct device *dev) |
Greg KH | c895817 | 2005-04-08 14:53:31 +0900 | [diff] [blame] | 655 | { |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 656 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 657 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Greg KH | c895817 | 2005-04-08 14:53:31 +0900 | [diff] [blame] | 658 | |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 659 | if (pci_has_legacy_pm_support(pci_dev)) |
| 660 | return pci_legacy_suspend_late(dev, PMSG_SUSPEND); |
| 661 | |
Rafael J. Wysocki | 931ff68 | 2009-03-16 22:40:50 +0100 | [diff] [blame] | 662 | if (!pm) { |
| 663 | pci_save_state(pci_dev); |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 664 | return 0; |
Rafael J. Wysocki | 931ff68 | 2009-03-16 22:40:50 +0100 | [diff] [blame] | 665 | } |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 666 | |
| 667 | if (pm->suspend_noirq) { |
| 668 | pci_power_t prev = pci_dev->current_state; |
| 669 | int error; |
| 670 | |
| 671 | error = pm->suspend_noirq(dev); |
| 672 | suspend_report_result(pm->suspend_noirq, error); |
| 673 | if (error) |
| 674 | return error; |
| 675 | |
| 676 | if (!pci_dev->state_saved && pci_dev->current_state != PCI_D0 |
| 677 | && pci_dev->current_state != PCI_UNKNOWN) { |
| 678 | WARN_ONCE(pci_dev->current_state != prev, |
| 679 | "PCI PM: State of device not saved by %pF\n", |
| 680 | pm->suspend_noirq); |
| 681 | return 0; |
| 682 | } |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 683 | } |
| 684 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 685 | if (!pci_dev->state_saved) { |
| 686 | pci_save_state(pci_dev); |
| 687 | if (!pci_is_bridge(pci_dev)) |
| 688 | pci_prepare_to_sleep(pci_dev); |
| 689 | } |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 690 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 691 | pci_pm_set_unknown_state(pci_dev); |
| 692 | |
Alan Stern | dbf0e4c | 2012-07-09 11:09:21 -0400 | [diff] [blame] | 693 | /* |
| 694 | * Some BIOSes from ASUS have a bug: If a USB EHCI host controller's |
| 695 | * PCI COMMAND register isn't 0, the BIOS assumes that the controller |
| 696 | * hasn't been quiesced and tries to turn it off. If the controller |
| 697 | * is already in D3, this can hang or cause memory corruption. |
| 698 | * |
| 699 | * Since the value of the COMMAND register doesn't matter once the |
| 700 | * device has been suspended, we can safely set it to 0 here. |
| 701 | */ |
| 702 | if (pci_dev->class == PCI_CLASS_SERIAL_USB_EHCI) |
| 703 | pci_write_config_word(pci_dev, PCI_COMMAND, 0); |
| 704 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 705 | return 0; |
Greg KH | c895817 | 2005-04-08 14:53:31 +0900 | [diff] [blame] | 706 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 708 | static int pci_pm_resume_noirq(struct device *dev) |
| 709 | { |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 710 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Rafael J. Wysocki | adf0949 | 2008-10-06 22:46:05 +0200 | [diff] [blame] | 711 | struct device_driver *drv = dev->driver; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 712 | int error = 0; |
| 713 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 714 | pci_pm_default_resume_early(pci_dev); |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 715 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 716 | if (pci_has_legacy_pm_support(pci_dev)) |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 717 | return pci_legacy_resume_early(dev); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 718 | |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 719 | if (drv && drv->pm && drv->pm->resume_noirq) |
| 720 | error = drv->pm->resume_noirq(dev); |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 721 | |
| 722 | return error; |
| 723 | } |
| 724 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 725 | static int pci_pm_resume(struct device *dev) |
| 726 | { |
| 727 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 728 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 729 | int error = 0; |
| 730 | |
Rafael J. Wysocki | 418e4da | 2009-01-26 21:43:08 +0100 | [diff] [blame] | 731 | /* |
| 732 | * This is necessary for the suspend error path in which resume is |
| 733 | * called without restoring the standard config registers of the device. |
| 734 | */ |
| 735 | if (pci_dev->state_saved) |
| 736 | pci_restore_standard_config(pci_dev); |
| 737 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 738 | if (pci_has_legacy_pm_support(pci_dev)) |
| 739 | return pci_legacy_resume(dev); |
| 740 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 741 | pci_pm_default_resume(pci_dev); |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 742 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 743 | if (pm) { |
| 744 | if (pm->resume) |
| 745 | error = pm->resume(dev); |
| 746 | } else { |
| 747 | pci_pm_reenable_device(pci_dev); |
| 748 | } |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 749 | |
Rafael J. Wysocki | 999cce4 | 2009-09-09 23:51:27 +0200 | [diff] [blame] | 750 | return error; |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 751 | } |
| 752 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 753 | #else /* !CONFIG_SUSPEND */ |
| 754 | |
| 755 | #define pci_pm_suspend NULL |
| 756 | #define pci_pm_suspend_noirq NULL |
| 757 | #define pci_pm_resume NULL |
| 758 | #define pci_pm_resume_noirq NULL |
| 759 | |
| 760 | #endif /* !CONFIG_SUSPEND */ |
| 761 | |
Rafael J. Wysocki | 1f112ce | 2011-04-11 22:54:42 +0200 | [diff] [blame] | 762 | #ifdef CONFIG_HIBERNATE_CALLBACKS |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 763 | |
| 764 | static int pci_pm_freeze(struct device *dev) |
| 765 | { |
| 766 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 767 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 768 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 769 | if (pci_has_legacy_pm_support(pci_dev)) |
| 770 | return pci_legacy_suspend(dev, PMSG_FREEZE); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 771 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 772 | if (!pm) { |
| 773 | pci_pm_default_suspend(pci_dev); |
| 774 | return 0; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 775 | } |
| 776 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 777 | if (pm->freeze) { |
| 778 | int error; |
| 779 | |
| 780 | error = pm->freeze(dev); |
| 781 | suspend_report_result(pm->freeze, error); |
| 782 | if (error) |
| 783 | return error; |
| 784 | } |
| 785 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 786 | return 0; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 787 | } |
| 788 | |
| 789 | static int pci_pm_freeze_noirq(struct device *dev) |
| 790 | { |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 791 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Rafael J. Wysocki | adf0949 | 2008-10-06 22:46:05 +0200 | [diff] [blame] | 792 | struct device_driver *drv = dev->driver; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 793 | |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 794 | if (pci_has_legacy_pm_support(pci_dev)) |
| 795 | return pci_legacy_suspend_late(dev, PMSG_FREEZE); |
| 796 | |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 797 | if (drv && drv->pm && drv->pm->freeze_noirq) { |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 798 | int error; |
| 799 | |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 800 | error = drv->pm->freeze_noirq(dev); |
| 801 | suspend_report_result(drv->pm->freeze_noirq, error); |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 802 | if (error) |
| 803 | return error; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 804 | } |
| 805 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 806 | if (!pci_dev->state_saved) |
| 807 | pci_save_state(pci_dev); |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 808 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 809 | pci_pm_set_unknown_state(pci_dev); |
| 810 | |
| 811 | return 0; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 812 | } |
| 813 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 814 | static int pci_pm_thaw_noirq(struct device *dev) |
| 815 | { |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 816 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Rafael J. Wysocki | adf0949 | 2008-10-06 22:46:05 +0200 | [diff] [blame] | 817 | struct device_driver *drv = dev->driver; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 818 | int error = 0; |
| 819 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 820 | if (pci_has_legacy_pm_support(pci_dev)) |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 821 | return pci_legacy_resume_early(dev); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 822 | |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 823 | pci_update_current_state(pci_dev, PCI_D0); |
| 824 | |
| 825 | if (drv && drv->pm && drv->pm->thaw_noirq) |
| 826 | error = drv->pm->thaw_noirq(dev); |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 827 | |
| 828 | return error; |
| 829 | } |
| 830 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 831 | static int pci_pm_thaw(struct device *dev) |
| 832 | { |
| 833 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 834 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 835 | int error = 0; |
| 836 | |
| 837 | if (pci_has_legacy_pm_support(pci_dev)) |
| 838 | return pci_legacy_resume(dev); |
| 839 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 840 | if (pm) { |
| 841 | if (pm->thaw) |
| 842 | error = pm->thaw(dev); |
| 843 | } else { |
| 844 | pci_pm_reenable_device(pci_dev); |
| 845 | } |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 846 | |
Rafael J. Wysocki | 4b77b0a | 2009-09-09 23:49:59 +0200 | [diff] [blame] | 847 | pci_dev->state_saved = false; |
| 848 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 849 | return error; |
| 850 | } |
| 851 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 852 | static int pci_pm_poweroff(struct device *dev) |
| 853 | { |
Rafael J. Wysocki | 355a72d | 2008-12-08 00:34:57 +0100 | [diff] [blame] | 854 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 855 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 856 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 857 | if (pci_has_legacy_pm_support(pci_dev)) |
| 858 | return pci_legacy_suspend(dev, PMSG_HIBERNATE); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 859 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 860 | if (!pm) { |
| 861 | pci_pm_default_suspend(pci_dev); |
| 862 | goto Fixup; |
| 863 | } |
| 864 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 865 | if (pm->poweroff) { |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 866 | int error; |
| 867 | |
Rafael J. Wysocki | ddb7c9d | 2009-02-04 01:56:14 +0100 | [diff] [blame] | 868 | error = pm->poweroff(dev); |
| 869 | suspend_report_result(pm->poweroff, error); |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 870 | if (error) |
| 871 | return error; |
| 872 | } |
| 873 | |
| 874 | Fixup: |
| 875 | pci_fixup_device(pci_fixup_suspend, pci_dev); |
| 876 | |
| 877 | return 0; |
| 878 | } |
| 879 | |
| 880 | static int pci_pm_poweroff_noirq(struct device *dev) |
| 881 | { |
| 882 | struct pci_dev *pci_dev = to_pci_dev(dev); |
| 883 | struct device_driver *drv = dev->driver; |
| 884 | |
| 885 | if (pci_has_legacy_pm_support(to_pci_dev(dev))) |
| 886 | return pci_legacy_suspend_late(dev, PMSG_HIBERNATE); |
| 887 | |
| 888 | if (!drv || !drv->pm) |
| 889 | return 0; |
| 890 | |
| 891 | if (drv->pm->poweroff_noirq) { |
| 892 | int error; |
| 893 | |
| 894 | error = drv->pm->poweroff_noirq(dev); |
| 895 | suspend_report_result(drv->pm->poweroff_noirq, error); |
| 896 | if (error) |
| 897 | return error; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 898 | } |
| 899 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 900 | if (!pci_dev->state_saved && !pci_is_bridge(pci_dev)) |
| 901 | pci_prepare_to_sleep(pci_dev); |
| 902 | |
Rafael J. Wysocki | 0b68c8e | 2012-08-12 23:26:07 +0200 | [diff] [blame] | 903 | /* |
| 904 | * The reason for doing this here is the same as for the analogous code |
| 905 | * in pci_pm_suspend_noirq(). |
| 906 | */ |
| 907 | if (pci_dev->class == PCI_CLASS_SERIAL_USB_EHCI) |
| 908 | pci_write_config_word(pci_dev, PCI_COMMAND, 0); |
| 909 | |
Rafael J. Wysocki | 46939f8 | 2009-03-16 22:40:26 +0100 | [diff] [blame] | 910 | return 0; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 911 | } |
| 912 | |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 913 | static int pci_pm_restore_noirq(struct device *dev) |
| 914 | { |
| 915 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Rafael J. Wysocki | adf0949 | 2008-10-06 22:46:05 +0200 | [diff] [blame] | 916 | struct device_driver *drv = dev->driver; |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 917 | int error = 0; |
| 918 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 919 | pci_pm_default_resume_early(pci_dev); |
Rafael J. Wysocki | aa8c6c9 | 2009-01-16 21:54:43 +0100 | [diff] [blame] | 920 | |
Rafael J. Wysocki | ad8cfa1 | 2009-01-07 13:09:37 +0100 | [diff] [blame] | 921 | if (pci_has_legacy_pm_support(pci_dev)) |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 922 | return pci_legacy_resume_early(dev); |
Rafael J. Wysocki | bb80894 | 2009-01-07 14:15:17 +0100 | [diff] [blame] | 923 | |
Rafael J. Wysocki | d67e37d | 2009-01-07 13:11:28 +0100 | [diff] [blame] | 924 | if (drv && drv->pm && drv->pm->restore_noirq) |
| 925 | error = drv->pm->restore_noirq(dev); |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 926 | |
| 927 | return error; |
| 928 | } |
| 929 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 930 | static int pci_pm_restore(struct device *dev) |
| 931 | { |
| 932 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 933 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 934 | int error = 0; |
| 935 | |
Rafael J. Wysocki | 418e4da | 2009-01-26 21:43:08 +0100 | [diff] [blame] | 936 | /* |
| 937 | * This is necessary for the hibernation error path in which restore is |
| 938 | * called without restoring the standard config registers of the device. |
| 939 | */ |
| 940 | if (pci_dev->state_saved) |
| 941 | pci_restore_standard_config(pci_dev); |
| 942 | |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 943 | if (pci_has_legacy_pm_support(pci_dev)) |
| 944 | return pci_legacy_resume(dev); |
| 945 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 946 | pci_pm_default_resume(pci_dev); |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 947 | |
Rafael J. Wysocki | 5294e25 | 2009-02-04 02:09:07 +0100 | [diff] [blame] | 948 | if (pm) { |
| 949 | if (pm->restore) |
| 950 | error = pm->restore(dev); |
| 951 | } else { |
| 952 | pci_pm_reenable_device(pci_dev); |
| 953 | } |
Rafael J. Wysocki | f6dc1e5 | 2009-01-07 13:12:22 +0100 | [diff] [blame] | 954 | |
| 955 | return error; |
| 956 | } |
| 957 | |
Rafael J. Wysocki | 1f112ce | 2011-04-11 22:54:42 +0200 | [diff] [blame] | 958 | #else /* !CONFIG_HIBERNATE_CALLBACKS */ |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 959 | |
| 960 | #define pci_pm_freeze NULL |
| 961 | #define pci_pm_freeze_noirq NULL |
| 962 | #define pci_pm_thaw NULL |
| 963 | #define pci_pm_thaw_noirq NULL |
| 964 | #define pci_pm_poweroff NULL |
| 965 | #define pci_pm_poweroff_noirq NULL |
| 966 | #define pci_pm_restore NULL |
| 967 | #define pci_pm_restore_noirq NULL |
| 968 | |
Rafael J. Wysocki | 1f112ce | 2011-04-11 22:54:42 +0200 | [diff] [blame] | 969 | #endif /* !CONFIG_HIBERNATE_CALLBACKS */ |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 970 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 971 | #ifdef CONFIG_PM_RUNTIME |
| 972 | |
| 973 | static int pci_pm_runtime_suspend(struct device *dev) |
| 974 | { |
| 975 | struct pci_dev *pci_dev = to_pci_dev(dev); |
| 976 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
| 977 | pci_power_t prev = pci_dev->current_state; |
| 978 | int error; |
| 979 | |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 980 | /* |
| 981 | * If pci_dev->driver is not set (unbound), the device should |
| 982 | * always remain in D0 regardless of the runtime PM status |
| 983 | */ |
| 984 | if (!pci_dev->driver) |
| 985 | return 0; |
| 986 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 987 | if (!pm || !pm->runtime_suspend) |
| 988 | return -ENOSYS; |
| 989 | |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 990 | pci_dev->no_d3cold = false; |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 991 | error = pm->runtime_suspend(dev); |
| 992 | suspend_report_result(pm->runtime_suspend, error); |
| 993 | if (error) |
| 994 | return error; |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 995 | if (!pci_dev->d3cold_allowed) |
| 996 | pci_dev->no_d3cold = true; |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 997 | |
| 998 | pci_fixup_device(pci_fixup_suspend, pci_dev); |
| 999 | |
| 1000 | if (!pci_dev->state_saved && pci_dev->current_state != PCI_D0 |
| 1001 | && pci_dev->current_state != PCI_UNKNOWN) { |
| 1002 | WARN_ONCE(pci_dev->current_state != prev, |
| 1003 | "PCI PM: State of device not saved by %pF\n", |
| 1004 | pm->runtime_suspend); |
| 1005 | return 0; |
| 1006 | } |
| 1007 | |
Dave Airlie | 42eca23 | 2012-10-29 17:26:54 -0600 | [diff] [blame] | 1008 | if (!pci_dev->state_saved) { |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1009 | pci_save_state(pci_dev); |
Dave Airlie | 42eca23 | 2012-10-29 17:26:54 -0600 | [diff] [blame] | 1010 | pci_finish_runtime_suspend(pci_dev); |
| 1011 | } |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1012 | |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | static int pci_pm_runtime_resume(struct device *dev) |
| 1017 | { |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 1018 | int rc; |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1019 | struct pci_dev *pci_dev = to_pci_dev(dev); |
| 1020 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
| 1021 | |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 1022 | /* |
| 1023 | * If pci_dev->driver is not set (unbound), the device should |
| 1024 | * always remain in D0 regardless of the runtime PM status |
| 1025 | */ |
| 1026 | if (!pci_dev->driver) |
| 1027 | return 0; |
| 1028 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1029 | if (!pm || !pm->runtime_resume) |
| 1030 | return -ENOSYS; |
| 1031 | |
Rafael J. Wysocki | db288c9 | 2012-07-05 15:20:00 -0600 | [diff] [blame] | 1032 | pci_restore_standard_config(pci_dev); |
| 1033 | pci_fixup_device(pci_fixup_resume_early, pci_dev); |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1034 | __pci_enable_wake(pci_dev, PCI_D0, true, false); |
| 1035 | pci_fixup_device(pci_fixup_resume, pci_dev); |
| 1036 | |
Huang Ying | 448bd85 | 2012-06-23 10:23:51 +0800 | [diff] [blame] | 1037 | rc = pm->runtime_resume(dev); |
| 1038 | |
| 1039 | pci_dev->runtime_d3cold = false; |
| 1040 | |
| 1041 | return rc; |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1042 | } |
| 1043 | |
| 1044 | static int pci_pm_runtime_idle(struct device *dev) |
| 1045 | { |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 1046 | struct pci_dev *pci_dev = to_pci_dev(dev); |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1047 | const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; |
| 1048 | |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 1049 | /* |
| 1050 | * If pci_dev->driver is not set (unbound), the device should |
| 1051 | * always remain in D0 regardless of the runtime PM status |
| 1052 | */ |
| 1053 | if (!pci_dev->driver) |
| 1054 | goto out; |
| 1055 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1056 | if (!pm) |
| 1057 | return -ENOSYS; |
| 1058 | |
| 1059 | if (pm->runtime_idle) { |
| 1060 | int ret = pm->runtime_idle(dev); |
| 1061 | if (ret) |
| 1062 | return ret; |
| 1063 | } |
| 1064 | |
Huang Ying | 967577b | 2012-11-20 16:08:22 +0800 | [diff] [blame] | 1065 | out: |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1066 | pm_runtime_suspend(dev); |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1067 | return 0; |
| 1068 | } |
| 1069 | |
| 1070 | #else /* !CONFIG_PM_RUNTIME */ |
| 1071 | |
| 1072 | #define pci_pm_runtime_suspend NULL |
| 1073 | #define pci_pm_runtime_resume NULL |
| 1074 | #define pci_pm_runtime_idle NULL |
| 1075 | |
| 1076 | #endif /* !CONFIG_PM_RUNTIME */ |
| 1077 | |
Rafael J. Wysocki | aa33860 | 2011-02-11 00:06:54 +0100 | [diff] [blame] | 1078 | #ifdef CONFIG_PM |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1079 | |
Dmitry Torokhov | 8150f32 | 2009-07-24 22:11:32 -0700 | [diff] [blame] | 1080 | const struct dev_pm_ops pci_dev_pm_ops = { |
Rafael J. Wysocki | adf0949 | 2008-10-06 22:46:05 +0200 | [diff] [blame] | 1081 | .prepare = pci_pm_prepare, |
| 1082 | .complete = pci_pm_complete, |
| 1083 | .suspend = pci_pm_suspend, |
| 1084 | .resume = pci_pm_resume, |
| 1085 | .freeze = pci_pm_freeze, |
| 1086 | .thaw = pci_pm_thaw, |
| 1087 | .poweroff = pci_pm_poweroff, |
| 1088 | .restore = pci_pm_restore, |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 1089 | .suspend_noirq = pci_pm_suspend_noirq, |
| 1090 | .resume_noirq = pci_pm_resume_noirq, |
| 1091 | .freeze_noirq = pci_pm_freeze_noirq, |
| 1092 | .thaw_noirq = pci_pm_thaw_noirq, |
| 1093 | .poweroff_noirq = pci_pm_poweroff_noirq, |
| 1094 | .restore_noirq = pci_pm_restore_noirq, |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1095 | .runtime_suspend = pci_pm_runtime_suspend, |
| 1096 | .runtime_resume = pci_pm_runtime_resume, |
| 1097 | .runtime_idle = pci_pm_runtime_idle, |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 1098 | }; |
| 1099 | |
Rafael J. Wysocki | adf0949 | 2008-10-06 22:46:05 +0200 | [diff] [blame] | 1100 | #define PCI_PM_OPS_PTR (&pci_dev_pm_ops) |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 1101 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1102 | #else /* !COMFIG_PM_OPS */ |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 1103 | |
| 1104 | #define PCI_PM_OPS_PTR NULL |
| 1105 | |
Rafael J. Wysocki | 6cbf821 | 2010-02-17 23:44:58 +0100 | [diff] [blame] | 1106 | #endif /* !COMFIG_PM_OPS */ |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 1107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | /** |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 1109 | * __pci_register_driver - register a new pci driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | * @drv: the driver structure to register |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 1111 | * @owner: owner module of drv |
Randy Dunlap | f95d882 | 2007-02-10 14:41:56 -0800 | [diff] [blame] | 1112 | * @mod_name: module name string |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | * |
| 1114 | * Adds the driver structure to the list of registered drivers. |
| 1115 | * Returns a negative value on error, otherwise 0. |
Steven Cole | eaae4b3 | 2005-05-03 18:38:30 -0600 | [diff] [blame] | 1116 | * If no error occurred, the driver remains registered even if |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | * no device was claimed during registration. |
| 1118 | */ |
Greg Kroah-Hartman | 725522b | 2007-01-15 11:50:02 -0800 | [diff] [blame] | 1119 | int __pci_register_driver(struct pci_driver *drv, struct module *owner, |
| 1120 | const char *mod_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | /* initialize common driver fields */ |
| 1123 | drv->driver.name = drv->name; |
| 1124 | drv->driver.bus = &pci_bus_type; |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 1125 | drv->driver.owner = owner; |
Greg Kroah-Hartman | 725522b | 2007-01-15 11:50:02 -0800 | [diff] [blame] | 1126 | drv->driver.mod_name = mod_name; |
Alan Cox | 50b0075 | 2006-08-16 17:42:18 +0100 | [diff] [blame] | 1127 | |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 1128 | spin_lock_init(&drv->dynids.lock); |
| 1129 | INIT_LIST_HEAD(&drv->dynids.list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | |
| 1131 | /* register with core */ |
Konstantin Khlebnikov | bfb09a8 | 2012-08-08 14:47:51 +0400 | [diff] [blame] | 1132 | return driver_register(&drv->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | } |
| 1134 | |
| 1135 | /** |
| 1136 | * pci_unregister_driver - unregister a pci driver |
| 1137 | * @drv: the driver structure to unregister |
| 1138 | * |
| 1139 | * Deletes the driver structure from the list of registered PCI drivers, |
| 1140 | * gives it a chance to clean up by calling its remove() function for |
| 1141 | * each device it was responsible for, and marks those devices as |
| 1142 | * driverless. |
| 1143 | */ |
| 1144 | |
| 1145 | void |
| 1146 | pci_unregister_driver(struct pci_driver *drv) |
| 1147 | { |
| 1148 | driver_unregister(&drv->driver); |
| 1149 | pci_free_dynids(drv); |
| 1150 | } |
| 1151 | |
| 1152 | static struct pci_driver pci_compat_driver = { |
| 1153 | .name = "compat" |
| 1154 | }; |
| 1155 | |
| 1156 | /** |
| 1157 | * pci_dev_driver - get the pci_driver of a device |
| 1158 | * @dev: the device to query |
| 1159 | * |
| 1160 | * Returns the appropriate pci_driver structure or %NULL if there is no |
| 1161 | * registered driver for the device. |
| 1162 | */ |
| 1163 | struct pci_driver * |
| 1164 | pci_dev_driver(const struct pci_dev *dev) |
| 1165 | { |
| 1166 | if (dev->driver) |
| 1167 | return dev->driver; |
| 1168 | else { |
| 1169 | int i; |
| 1170 | for(i=0; i<=PCI_ROM_RESOURCE; i++) |
| 1171 | if (dev->resource[i].flags & IORESOURCE_BUSY) |
| 1172 | return &pci_compat_driver; |
| 1173 | } |
| 1174 | return NULL; |
| 1175 | } |
| 1176 | |
| 1177 | /** |
| 1178 | * pci_bus_match - Tell if a PCI device structure has a matching PCI device id structure |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | * @dev: the PCI device structure to match against |
Randy Dunlap | 8f7020d | 2005-10-23 11:57:38 -0700 | [diff] [blame] | 1180 | * @drv: the device driver to search for matching PCI device id structures |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | * |
| 1182 | * Used by a driver to check whether a PCI device present in the |
Randy Dunlap | 8f7020d | 2005-10-23 11:57:38 -0700 | [diff] [blame] | 1183 | * system is in its list of supported devices. Returns the matching |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | * pci_device_id structure or %NULL if there is no match. |
| 1185 | */ |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 1186 | static int pci_bus_match(struct device *dev, struct device_driver *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | { |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 1188 | struct pci_dev *pci_dev = to_pci_dev(dev); |
| 1189 | struct pci_driver *pci_drv = to_pci_driver(drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | const struct pci_device_id *found_id; |
| 1191 | |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 1192 | found_id = pci_match_device(pci_drv, pci_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | if (found_id) |
| 1194 | return 1; |
| 1195 | |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 1196 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | } |
| 1198 | |
| 1199 | /** |
| 1200 | * pci_dev_get - increments the reference count of the pci device structure |
| 1201 | * @dev: the device being referenced |
| 1202 | * |
| 1203 | * Each live reference to a device should be refcounted. |
| 1204 | * |
| 1205 | * Drivers for PCI devices should normally record such references in |
| 1206 | * their probe() methods, when they bind to a device, and release |
| 1207 | * them by calling pci_dev_put(), in their disconnect() methods. |
| 1208 | * |
| 1209 | * A pointer to the device with the incremented reference counter is returned. |
| 1210 | */ |
| 1211 | struct pci_dev *pci_dev_get(struct pci_dev *dev) |
| 1212 | { |
| 1213 | if (dev) |
| 1214 | get_device(&dev->dev); |
| 1215 | return dev; |
| 1216 | } |
| 1217 | |
| 1218 | /** |
| 1219 | * pci_dev_put - release a use of the pci device structure |
| 1220 | * @dev: device that's been disconnected |
| 1221 | * |
| 1222 | * Must be called when a user of a device is finished with it. When the last |
| 1223 | * user of the device calls this function, the memory of the device is freed. |
| 1224 | */ |
| 1225 | void pci_dev_put(struct pci_dev *dev) |
| 1226 | { |
| 1227 | if (dev) |
| 1228 | put_device(&dev->dev); |
| 1229 | } |
| 1230 | |
Bill Pemberton | 8ccc9aa | 2012-11-21 15:34:58 -0500 | [diff] [blame] | 1231 | static int pci_uevent(struct device *dev, struct kobj_uevent_env *env) |
| 1232 | { |
| 1233 | struct pci_dev *pdev; |
| 1234 | |
| 1235 | if (!dev) |
| 1236 | return -ENODEV; |
| 1237 | |
| 1238 | pdev = to_pci_dev(dev); |
| 1239 | if (!pdev) |
| 1240 | return -ENODEV; |
| 1241 | |
| 1242 | if (add_uevent_var(env, "PCI_CLASS=%04X", pdev->class)) |
| 1243 | return -ENOMEM; |
| 1244 | |
| 1245 | if (add_uevent_var(env, "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) |
| 1246 | return -ENOMEM; |
| 1247 | |
| 1248 | if (add_uevent_var(env, "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, |
| 1249 | pdev->subsystem_device)) |
| 1250 | return -ENOMEM; |
| 1251 | |
| 1252 | if (add_uevent_var(env, "PCI_SLOT_NAME=%s", pci_name(pdev))) |
| 1253 | return -ENOMEM; |
| 1254 | |
| 1255 | if (add_uevent_var(env, "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", |
| 1256 | pdev->vendor, pdev->device, |
| 1257 | pdev->subsystem_vendor, pdev->subsystem_device, |
| 1258 | (u8)(pdev->class >> 16), (u8)(pdev->class >> 8), |
| 1259 | (u8)(pdev->class))) |
| 1260 | return -ENOMEM; |
| 1261 | return 0; |
| 1262 | } |
| 1263 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | struct bus_type pci_bus_type = { |
| 1265 | .name = "pci", |
| 1266 | .match = pci_bus_match, |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 1267 | .uevent = pci_uevent, |
Russell King | b15d686 | 2006-01-05 14:30:22 +0000 | [diff] [blame] | 1268 | .probe = pci_device_probe, |
| 1269 | .remove = pci_device_remove, |
Linus Torvalds | cbd69db | 2006-06-24 14:50:29 -0700 | [diff] [blame] | 1270 | .shutdown = pci_device_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | .dev_attrs = pci_dev_attrs, |
Alex Chiang | 705b1aa | 2009-03-20 14:56:31 -0600 | [diff] [blame] | 1272 | .bus_attrs = pci_bus_attrs, |
Konstantin Khlebnikov | bfb09a8 | 2012-08-08 14:47:51 +0400 | [diff] [blame] | 1273 | .drv_attrs = pci_drv_attrs, |
Rafael J. Wysocki | bbb44d9 | 2008-05-20 00:49:04 +0200 | [diff] [blame] | 1274 | .pm = PCI_PM_OPS_PTR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | }; |
| 1276 | |
| 1277 | static int __init pci_driver_init(void) |
| 1278 | { |
| 1279 | return bus_register(&pci_bus_type); |
| 1280 | } |
| 1281 | |
| 1282 | postcore_initcall(pci_driver_init); |
| 1283 | |
Tejun Heo | 9dba910 | 2009-09-03 15:26:36 +0900 | [diff] [blame] | 1284 | EXPORT_SYMBOL_GPL(pci_add_dynid); |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 1285 | EXPORT_SYMBOL(pci_match_id); |
Laurent riffard | 863b18f | 2005-10-27 23:12:54 +0200 | [diff] [blame] | 1286 | EXPORT_SYMBOL(__pci_register_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | EXPORT_SYMBOL(pci_unregister_driver); |
| 1288 | EXPORT_SYMBOL(pci_dev_driver); |
| 1289 | EXPORT_SYMBOL(pci_bus_type); |
| 1290 | EXPORT_SYMBOL(pci_dev_get); |
| 1291 | EXPORT_SYMBOL(pci_dev_put); |