aboutsummaryrefslogtreecommitdiff
path: root/drivers/pci/pcie
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/pcie')
-rw-r--r--drivers/pci/pcie/portdrv_core.c139
1 files changed, 65 insertions, 74 deletions
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index 576285765e9..f5c5f10a3d2 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -232,19 +232,16 @@ static void pcie_device_init(struct pci_dev *parent, struct pcie_device *dev,
/* Initialize generic device interface */
device = &dev->device;
memset(device, 0, sizeof(struct device));
- INIT_LIST_HEAD(&device->node);
- INIT_LIST_HEAD(&device->children);
- INIT_LIST_HEAD(&device->bus_list);
device->bus = &pcie_port_bus_type;
device->driver = NULL;
- device->driver_data = NULL;
+ device->driver_data = NULL;
device->release = release_pcie_device; /* callback to free pcie dev */
- sprintf(&device->bus_id[0], "pcie%02x",
+ sprintf(&device->bus_id[0], "pcie%02x",
get_descriptor_id(port_type, service_type));
device->parent = &parent->dev;
}
-static struct pcie_device* alloc_pcie_device(struct pci_dev *parent,
+static struct pcie_device* alloc_pcie_device(struct pci_dev *parent,
int port_type, int service_type, int irq, int irq_mode)
{
struct pcie_device *device;
@@ -270,9 +267,9 @@ int pcie_port_device_probe(struct pci_dev *dev)
pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg);
type = (reg >> 4) & PORT_TYPE_MASK;
if ( type == PCIE_RC_PORT || type == PCIE_SW_UPSTREAM_PORT ||
- type == PCIE_SW_DOWNSTREAM_PORT )
+ type == PCIE_SW_DOWNSTREAM_PORT )
return 0;
-
+
return -ENODEV;
}
@@ -283,8 +280,8 @@ int pcie_port_device_register(struct pci_dev *dev)
u16 reg16;
/* Get port type */
- pci_read_config_word(dev,
- pci_find_capability(dev, PCI_CAP_ID_EXP) +
+ pci_read_config_word(dev,
+ pci_find_capability(dev, PCI_CAP_ID_EXP) +
PCIE_CAPABILITIES_REG, &reg16);
type = (reg16 >> 4) & PORT_TYPE_MASK;
@@ -299,11 +296,11 @@ int pcie_port_device_register(struct pci_dev *dev)
if (capabilities & (1 << i)) {
child = alloc_pcie_device(
dev, /* parent */
- type, /* port type */
+ type, /* port type */
i, /* service type */
vectors[i], /* irq */
irq_mode /* interrupt mode */);
- if (child) {
+ if (child) {
status = device_register(&child->device);
if (status) {
kfree(child);
@@ -317,84 +314,78 @@ int pcie_port_device_register(struct pci_dev *dev)
}
#ifdef CONFIG_PM
-int pcie_port_device_suspend(struct pci_dev *dev, pm_message_t state)
+static int suspend_iter(struct device *dev, void *data)
{
- struct list_head *head, *tmp;
- struct device *parent, *child;
- struct device_driver *driver;
struct pcie_port_service_driver *service_driver;
+ u32 state = (u32)data;
+
+ if ((dev->bus == &pcie_port_bus_type) &&
+ (dev->driver)) {
+ service_driver = to_service_driver(dev->driver);
+ if (service_driver->suspend)
+ service_driver->suspend(to_pcie_device(dev), state);
+ }
+ return 0;
+}
- parent = &dev->dev;
- head = &parent->children;
- tmp = head->next;
- while (head != tmp) {
- child = container_of(tmp, struct device, node);
- tmp = tmp->next;
- if (child->bus != &pcie_port_bus_type)
- continue;
- driver = child->driver;
- if (!driver)
- continue;
- service_driver = to_service_driver(driver);
- if (service_driver->suspend)
- service_driver->suspend(to_pcie_device(child), state);
- }
- return 0;
+int pcie_port_device_suspend(struct pci_dev *dev, u32 state)
+{
+ device_for_each_child(&dev->dev, (void *)state, suspend_iter);
+ return 0;
}
-int pcie_port_device_resume(struct pci_dev *dev)
-{
- struct list_head *head, *tmp;
- struct device *parent, *child;
- struct device_driver *driver;
+static int resume_iter(struct device *dev, void *data)
+{
struct pcie_port_service_driver *service_driver;
- parent = &dev->dev;
- head = &parent->children;
- tmp = head->next;
- while (head != tmp) {
- child = container_of(tmp, struct device, node);
- tmp = tmp->next;
- if (child->bus != &pcie_port_bus_type)
- continue;
- driver = child->driver;
- if (!driver)
- continue;
- service_driver = to_service_driver(driver);
- if (service_driver->resume)
- service_driver->resume(to_pcie_device(child));
+ if ((dev->bus == &pcie_port_bus_type) &&
+ (dev->driver)) {
+ service_driver = to_service_driver(dev->driver);
+ if (service_driver->resume)
+ service_driver->resume(to_pcie_device(dev));
}
- return 0;
+ return 0;
+}
+int pcie_port_device_resume(struct pci_dev *dev)
+{
+ device_for_each_child(&dev->dev, NULL, resume_iter);
+ return 0;
}
#endif
-void pcie_port_device_remove(struct pci_dev *dev)
+static int remove_iter(struct device *dev, void *data)
{
- struct list_head *head, *tmp;
- struct device *parent, *child;
- struct device_driver *driver;
struct pcie_port_service_driver *service_driver;
- int interrupt_mode = PCIE_PORT_INTx_MODE;
- parent = &dev->dev;
- head = &parent->children;
- tmp = head->next;
- while (head != tmp) {
- child = container_of(tmp, struct device, node);
- tmp = tmp->next;
- if (child->bus != &pcie_port_bus_type)
- continue;
- driver = child->driver;
- if (driver) {
- service_driver = to_service_driver(driver);
- if (service_driver->remove)
- service_driver->remove(to_pcie_device(child));
+ if (dev->bus == &pcie_port_bus_type) {
+ if (dev->driver) {
+ service_driver = to_service_driver(dev->driver);
+ if (service_driver->remove)
+ service_driver->remove(to_pcie_device(dev));
}
- interrupt_mode = (to_pcie_device(child))->interrupt_mode;
- put_device(child);
- device_unregister(child);
+ *(unsigned long*)data = (unsigned long)dev;
+ return 1;
}
+ return 0;
+}
+
+void pcie_port_device_remove(struct pci_dev *dev)
+{
+ struct device *device;
+ unsigned long device_addr;
+ int interrupt_mode = PCIE_PORT_INTx_MODE;
+ int status;
+
+ do {
+ status = device_for_each_child(&dev->dev, &device_addr, remove_iter);
+ if (status) {
+ device = (struct device*)device_addr;
+ interrupt_mode = (to_pcie_device(device))->interrupt_mode;
+ put_device(device);
+ device_unregister(device);
+ }
+ } while (status);
/* Switch to INTx by default if MSI enabled */
if (interrupt_mode == PCIE_PORT_MSIX_MODE)
pci_disable_msix(dev);
@@ -423,7 +414,7 @@ int pcie_port_service_register(struct pcie_port_service_driver *new)
new->driver.resume = pcie_port_resume_service;
return driver_register(&new->driver);
-}
+}
void pcie_port_service_unregister(struct pcie_port_service_driver *new)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 07:28:42 +0000