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path: root/drivers/pci/pci-driver.c
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Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r--drivers/pci/pci-driver.c127
1 files changed, 80 insertions, 47 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index d911e0c1f35..3f8e3dbcaa7 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -77,6 +77,7 @@ int pci_add_dynid(struct pci_driver *drv,
return retval;
}
+EXPORT_SYMBOL_GPL(pci_add_dynid);
static void pci_free_dynids(struct pci_driver *drv)
{
@@ -98,16 +99,16 @@ static void pci_free_dynids(struct pci_driver *drv)
*
* Allow PCI IDs to be added to an existing driver via sysfs.
*/
-static ssize_t
-store_new_id(struct device_driver *driver, const char *buf, size_t count)
+static ssize_t store_new_id(struct device_driver *driver, const char *buf,
+ size_t count)
{
struct pci_driver *pdrv = to_pci_driver(driver);
const struct pci_device_id *ids = pdrv->id_table;
- __u32 vendor, device, subvendor=PCI_ANY_ID,
- subdevice=PCI_ANY_ID, class=0, class_mask=0;
- unsigned long driver_data=0;
- int fields=0;
- int retval;
+ __u32 vendor, device, subvendor = PCI_ANY_ID,
+ subdevice = PCI_ANY_ID, class = 0, class_mask = 0;
+ unsigned long driver_data = 0;
+ int fields = 0;
+ int retval = 0;
fields = sscanf(buf, "%x %x %x %x %x %x %lx",
&vendor, &device, &subvendor, &subdevice,
@@ -115,6 +116,26 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
if (fields < 2)
return -EINVAL;
+ if (fields != 7) {
+ struct pci_dev *pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+ if (!pdev)
+ return -ENOMEM;
+
+ pdev->vendor = vendor;
+ pdev->device = device;
+ pdev->subsystem_vendor = subvendor;
+ pdev->subsystem_device = subdevice;
+ pdev->class = class;
+
+ if (pci_match_id(pdrv->id_table, pdev))
+ retval = -EEXIST;
+
+ kfree(pdev);
+
+ if (retval)
+ return retval;
+ }
+
/* Only accept driver_data values that match an existing id_table
entry */
if (ids) {
@@ -146,8 +167,8 @@ static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
*
* Removes a dynamic pci device ID to this driver.
*/
-static ssize_t
-store_remove_id(struct device_driver *driver, const char *buf, size_t count)
+static ssize_t store_remove_id(struct device_driver *driver, const char *buf,
+ size_t count)
{
struct pci_dynid *dynid, *n;
struct pci_driver *pdrv = to_pci_driver(driver);
@@ -215,6 +236,14 @@ const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
}
return NULL;
}
+EXPORT_SYMBOL(pci_match_id);
+
+static const struct pci_device_id pci_device_id_any = {
+ .vendor = PCI_ANY_ID,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+};
/**
* pci_match_device - Tell if a PCI device structure has a matching PCI device id structure
@@ -229,18 +258,30 @@ static const struct pci_device_id *pci_match_device(struct pci_driver *drv,
struct pci_dev *dev)
{
struct pci_dynid *dynid;
+ const struct pci_device_id *found_id = NULL;
+
+ /* When driver_override is set, only bind to the matching driver */
+ if (dev->driver_override && strcmp(dev->driver_override, drv->name))
+ return NULL;
/* Look at the dynamic ids first, before the static ones */
spin_lock(&drv->dynids.lock);
list_for_each_entry(dynid, &drv->dynids.list, node) {
if (pci_match_one_device(&dynid->id, dev)) {
- spin_unlock(&drv->dynids.lock);
- return &dynid->id;
+ found_id = &dynid->id;
+ break;
}
}
spin_unlock(&drv->dynids.lock);
- return pci_match_id(drv->id_table, dev);
+ if (!found_id)
+ found_id = pci_match_id(drv->id_table, dev);
+
+ /* driver_override will always match, send a dummy id */
+ if (!found_id && dev->driver_override)
+ found_id = &pci_device_id_any;
+
+ return found_id;
}
struct drv_dev_and_id {
@@ -333,8 +374,7 @@ static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
* returns 0 on success, else error.
* side-effect: pci_dev->driver is set to drv when drv claims pci_dev.
*/
-static int
-__pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev)
+static int __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev)
{
const struct pci_device_id *id;
int error = 0;
@@ -351,7 +391,7 @@ __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev)
return error;
}
-static int pci_device_probe(struct device * dev)
+static int pci_device_probe(struct device *dev)
{
int error = 0;
struct pci_driver *drv;
@@ -367,10 +407,10 @@ static int pci_device_probe(struct device * dev)
return error;
}
-static int pci_device_remove(struct device * dev)
+static int pci_device_remove(struct device *dev)
{
- struct pci_dev * pci_dev = to_pci_dev(dev);
- struct pci_driver * drv = pci_dev->driver;
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+ struct pci_driver *drv = pci_dev->driver;
if (drv) {
if (drv->remove) {
@@ -498,8 +538,8 @@ static int pci_pm_reenable_device(struct pci_dev *pci_dev)
static int pci_legacy_suspend(struct device *dev, pm_message_t state)
{
- struct pci_dev * pci_dev = to_pci_dev(dev);
- struct pci_driver * drv = pci_dev->driver;
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+ struct pci_driver *drv = pci_dev->driver;
if (drv && drv->suspend) {
pci_power_t prev = pci_dev->current_state;
@@ -525,8 +565,8 @@ static int pci_legacy_suspend(struct device *dev, pm_message_t state)
static int pci_legacy_suspend_late(struct device *dev, pm_message_t state)
{
- struct pci_dev * pci_dev = to_pci_dev(dev);
- struct pci_driver * drv = pci_dev->driver;
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+ struct pci_driver *drv = pci_dev->driver;
if (drv && drv->suspend_late) {
pci_power_t prev = pci_dev->current_state;
@@ -556,8 +596,8 @@ static int pci_legacy_suspend_late(struct device *dev, pm_message_t state)
static int pci_legacy_resume_early(struct device *dev)
{
- struct pci_dev * pci_dev = to_pci_dev(dev);
- struct pci_driver * drv = pci_dev->driver;
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+ struct pci_driver *drv = pci_dev->driver;
return drv && drv->resume_early ?
drv->resume_early(pci_dev) : 0;
@@ -565,8 +605,8 @@ static int pci_legacy_resume_early(struct device *dev)
static int pci_legacy_resume(struct device *dev)
{
- struct pci_dev * pci_dev = to_pci_dev(dev);
- struct pci_driver * drv = pci_dev->driver;
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+ struct pci_driver *drv = pci_dev->driver;
pci_fixup_device(pci_fixup_resume, pci_dev);
@@ -580,14 +620,14 @@ static void pci_pm_default_resume(struct pci_dev *pci_dev)
{
pci_fixup_device(pci_fixup_resume, pci_dev);
- if (!pci_is_bridge(pci_dev))
+ if (!pci_has_subordinate(pci_dev))
pci_enable_wake(pci_dev, PCI_D0, false);
}
static void pci_pm_default_suspend(struct pci_dev *pci_dev)
{
/* Disable non-bridge devices without PM support */
- if (!pci_is_bridge(pci_dev))
+ if (!pci_has_subordinate(pci_dev))
pci_disable_enabled_device(pci_dev);
}
@@ -717,7 +757,7 @@ static int pci_pm_suspend_noirq(struct device *dev)
if (!pci_dev->state_saved) {
pci_save_state(pci_dev);
- if (!pci_is_bridge(pci_dev))
+ if (!pci_has_subordinate(pci_dev))
pci_prepare_to_sleep(pci_dev);
}
@@ -971,7 +1011,7 @@ static int pci_pm_poweroff_noirq(struct device *dev)
return error;
}
- if (!pci_dev->state_saved && !pci_is_bridge(pci_dev))
+ if (!pci_dev->state_saved && !pci_has_subordinate(pci_dev))
pci_prepare_to_sleep(pci_dev);
/*
@@ -1216,6 +1256,7 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
/* register with core */
return driver_register(&drv->driver);
}
+EXPORT_SYMBOL(__pci_register_driver);
/**
* pci_unregister_driver - unregister a pci driver
@@ -1227,12 +1268,12 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
* driverless.
*/
-void
-pci_unregister_driver(struct pci_driver *drv)
+void pci_unregister_driver(struct pci_driver *drv)
{
driver_unregister(&drv->driver);
pci_free_dynids(drv);
}
+EXPORT_SYMBOL(pci_unregister_driver);
static struct pci_driver pci_compat_driver = {
.name = "compat"
@@ -1245,19 +1286,19 @@ static struct pci_driver pci_compat_driver = {
* Returns the appropriate pci_driver structure or %NULL if there is no
* registered driver for the device.
*/
-struct pci_driver *
-pci_dev_driver(const struct pci_dev *dev)
+struct pci_driver *pci_dev_driver(const struct pci_dev *dev)
{
if (dev->driver)
return dev->driver;
else {
int i;
- for(i=0; i<=PCI_ROM_RESOURCE; i++)
+ for (i = 0; i <= PCI_ROM_RESOURCE; i++)
if (dev->resource[i].flags & IORESOURCE_BUSY)
return &pci_compat_driver;
}
return NULL;
}
+EXPORT_SYMBOL(pci_dev_driver);
/**
* pci_bus_match - Tell if a PCI device structure has a matching PCI device id structure
@@ -1303,6 +1344,7 @@ struct pci_dev *pci_dev_get(struct pci_dev *dev)
get_device(&dev->dev);
return dev;
}
+EXPORT_SYMBOL(pci_dev_get);
/**
* pci_dev_put - release a use of the pci device structure
@@ -1316,6 +1358,7 @@ void pci_dev_put(struct pci_dev *dev)
if (dev)
put_device(&dev->dev);
}
+EXPORT_SYMBOL(pci_dev_put);
static int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
{
@@ -1325,8 +1368,6 @@ static int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
return -ENODEV;
pdev = to_pci_dev(dev);
- if (!pdev)
- return -ENODEV;
if (add_uevent_var(env, "PCI_CLASS=%04X", pdev->class))
return -ENOMEM;
@@ -1347,6 +1388,7 @@ static int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
(u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
(u8)(pdev->class)))
return -ENOMEM;
+
return 0;
}
@@ -1362,19 +1404,10 @@ struct bus_type pci_bus_type = {
.drv_groups = pci_drv_groups,
.pm = PCI_PM_OPS_PTR,
};
+EXPORT_SYMBOL(pci_bus_type);
static int __init pci_driver_init(void)
{
return bus_register(&pci_bus_type);
}
-
postcore_initcall(pci_driver_init);
-
-EXPORT_SYMBOL_GPL(pci_add_dynid);
-EXPORT_SYMBOL(pci_match_id);
-EXPORT_SYMBOL(__pci_register_driver);
-EXPORT_SYMBOL(pci_unregister_driver);
-EXPORT_SYMBOL(pci_dev_driver);
-EXPORT_SYMBOL(pci_bus_type);
-EXPORT_SYMBOL(pci_dev_get);
-EXPORT_SYMBOL(pci_dev_put);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 08:07:57 +0000