extern int pcie_mch_quirk; /* MSI-quirk Indicator */
-static int pcie_port_probe_service(struct device *dev)
-{
- struct pcie_device *pciedev;
- struct pcie_port_service_driver *driver;
- int status;
-
- if (!dev || !dev->driver)
- return -ENODEV;
-
- driver = to_service_driver(dev->driver);
- if (!driver || !driver->probe)
- return -ENODEV;
-
- pciedev = to_pcie_device(dev);
- status = driver->probe(pciedev, driver->id_table);
- if (!status) {
- dev_printk(KERN_DEBUG, dev, "service driver %s loaded\n",
- driver->name);
- get_device(dev);
- }
- return status;
-}
-
-static int pcie_port_remove_service(struct device *dev)
-{
- struct pcie_device *pciedev;
- struct pcie_port_service_driver *driver;
-
- if (!dev || !dev->driver)
- return 0;
-
- pciedev = to_pcie_device(dev);
- driver = to_service_driver(dev->driver);
- if (driver && driver->remove) {
- dev_printk(KERN_DEBUG, dev, "unloading service driver %s\n",
- driver->name);
- driver->remove(pciedev);
- put_device(dev);
- }
- return 0;
-}
-
-static void pcie_port_shutdown_service(struct device *dev) {}
-
-static int pcie_port_suspend_service(struct device *dev, pm_message_t state)
-{
- struct pcie_device *pciedev;
- struct pcie_port_service_driver *driver;
-
- if (!dev || !dev->driver)
- return 0;
-
- pciedev = to_pcie_device(dev);
- driver = to_service_driver(dev->driver);
- if (driver && driver->suspend)
- driver->suspend(pciedev, state);
- return 0;
-}
-
-static int pcie_port_resume_service(struct device *dev)
-{
- struct pcie_device *pciedev;
- struct pcie_port_service_driver *driver;
-
- if (!dev || !dev->driver)
- return 0;
-
- pciedev = to_pcie_device(dev);
- driver = to_service_driver(dev->driver);
-
- if (driver && driver->resume)
- driver->resume(pciedev);
- return 0;
-}
-
-/*
- * release_pcie_device
- *
- * Being invoked automatically when device is being removed
- * in response to device_unregister(dev) call.
- * Release all resources being claimed.
+/**
+ * release_pcie_device - free PCI Express port service device structure
+ * @dev: Port service device to release
+ *
+ * Invoked automatically when device is being removed in response to
+ * device_unregister(dev). Release all resources being claimed.
*/
static void release_pcie_device(struct device *dev)
{
- dev_printk(KERN_DEBUG, dev, "free port service\n");
kfree(to_pcie_device(dev));
}
}
return quirk;
}
-
+
+/**
+ * assign_interrupt_mode - choose interrupt mode for PCI Express port services
+ * (INTx, MSI-X, MSI) and set up vectors
+ * @dev: PCI Express port to handle
+ * @vectors: Array of interrupt vectors to populate
+ * @mask: Bitmask of port capabilities returned by get_port_device_capability()
+ *
+ * Return value: Interrupt mode associated with the port
+ */
static int assign_interrupt_mode(struct pci_dev *dev, int *vectors, int mask)
{
int i, pos, nvec, status = -EINVAL;
if (pos) {
struct msix_entry msix_entries[PCIE_PORT_DEVICE_MAXSERVICES] =
{{0, 0}, {0, 1}, {0, 2}, {0, 3}};
- dev_info(&dev->dev, "found MSI-X capability\n");
status = pci_enable_msix(dev, msix_entries, nvec);
if (!status) {
int j = 0;
if (status) {
pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
if (pos) {
- dev_info(&dev->dev, "found MSI capability\n");
status = pci_enable_msi(dev);
if (!status) {
interrupt_mode = PCIE_PORT_MSI_MODE;
return interrupt_mode;
}
+/**
+ * get_port_device_capability - discover capabilities of a PCI Express port
+ * @dev: PCI Express port to examine
+ *
+ * The capabilities are read from the port's PCI Express configuration registers
+ * as described in PCI Express Base Specification 1.0a sections 7.8.2, 7.8.9 and
+ * 7.9 - 7.11.
+ *
+ * Return value: Bitmask of discovered port capabilities
+ */
static int get_port_device_capability(struct pci_dev *dev)
{
int services = 0, pos;
return services;
}
+/**
+ * pcie_device_init - initialize PCI Express port service device
+ * @dev: Port service device to initialize
+ * @parent: PCI Express port to associate the service device with
+ * @port_type: Type of the port
+ * @service_type: Type of service to associate with the service device
+ * @irq: Interrupt vector to associate with the service device
+ * @irq_mode: Interrupt mode of the service (INTx, MSI-X, MSI)
+ */
static void pcie_device_init(struct pci_dev *parent, struct pcie_device *dev,
int port_type, int service_type, int irq, int irq_mode)
{
device->driver = NULL;
device->driver_data = NULL;
device->release = release_pcie_device; /* callback to free pcie dev */
- snprintf(device->bus_id, sizeof(device->bus_id), "%s:pcie%02x",
+ dev_set_name(device, "%s:pcie%02x",
pci_name(parent), get_descriptor_id(port_type, service_type));
device->parent = &parent->dev;
}
+/**
+ * alloc_pcie_device - allocate PCI Express port service device structure
+ * @parent: PCI Express port to associate the service device with
+ * @port_type: Type of the port
+ * @service_type: Type of service to associate with the service device
+ * @irq: Interrupt vector to associate with the service device
+ * @irq_mode: Interrupt mode of the service (INTx, MSI-X, MSI)
+ */
static struct pcie_device* alloc_pcie_device(struct pci_dev *parent,
int port_type, int service_type, int irq, int irq_mode)
{
return NULL;
pcie_device_init(parent, device, port_type, service_type, irq,irq_mode);
- dev_printk(KERN_DEBUG, &device->device, "allocate port service\n");
return device;
}
+/**
+ * pcie_port_device_probe - check if device is a PCI Express port
+ * @dev: Device to check
+ */
int pcie_port_device_probe(struct pci_dev *dev)
{
int pos, type;
return -ENODEV;
}
+/**
+ * pcie_port_device_register - register PCI Express port
+ * @dev: PCI Express port to register
+ *
+ * Allocate the port extension structure and register services associated with
+ * the port.
+ */
int pcie_port_device_register(struct pci_dev *dev)
{
struct pcie_port_device_ext *p_ext;
return 0;
}
+/**
+ * pcie_port_device_suspend - suspend port services associated with a PCIe port
+ * @dev: PCI Express port to handle
+ * @state: Representation of system power management transition in progress
+ */
int pcie_port_device_suspend(struct pci_dev *dev, pm_message_t state)
{
return device_for_each_child(&dev->dev, &state, suspend_iter);
return 0;
}
+/**
+ * pcie_port_device_suspend - resume port services associated with a PCIe port
+ * @dev: PCI Express port to handle
+ */
int pcie_port_device_resume(struct pci_dev *dev)
{
return device_for_each_child(&dev->dev, NULL, resume_iter);
return 0;
}
+/**
+ * pcie_port_device_remove - unregister PCI Express port service devices
+ * @dev: PCI Express port the service devices to unregister are associated with
+ *
+ * Remove PCI Express port service devices associated with given port and
+ * disable MSI-X or MSI for the port.
+ */
void pcie_port_device_remove(struct pci_dev *dev)
{
struct device *device;
pci_disable_msi(dev);
}
-int pcie_port_bus_register(void)
+/**
+ * pcie_port_probe_service - probe driver for given PCI Express port service
+ * @dev: PCI Express port service device to probe against
+ *
+ * If PCI Express port service driver is registered with
+ * pcie_port_service_register(), this function will be called by the driver core
+ * whenever match is found between the driver and a port service device.
+ */
+static int pcie_port_probe_service(struct device *dev)
{
- return bus_register(&pcie_port_bus_type);
+ struct pcie_device *pciedev;
+ struct pcie_port_service_driver *driver;
+ int status;
+
+ if (!dev || !dev->driver)
+ return -ENODEV;
+
+ driver = to_service_driver(dev->driver);
+ if (!driver || !driver->probe)
+ return -ENODEV;
+
+ pciedev = to_pcie_device(dev);
+ status = driver->probe(pciedev, driver->id_table);
+ if (!status) {
+ dev_printk(KERN_DEBUG, dev, "service driver %s loaded\n",
+ driver->name);
+ get_device(dev);
+ }
+ return status;
}
-void pcie_port_bus_unregister(void)
+/**
+ * pcie_port_remove_service - detach driver from given PCI Express port service
+ * @dev: PCI Express port service device to handle
+ *
+ * If PCI Express port service driver is registered with
+ * pcie_port_service_register(), this function will be called by the driver core
+ * when device_unregister() is called for the port service device associated
+ * with the driver.
+ */
+static int pcie_port_remove_service(struct device *dev)
{
- bus_unregister(&pcie_port_bus_type);
+ struct pcie_device *pciedev;
+ struct pcie_port_service_driver *driver;
+
+ if (!dev || !dev->driver)
+ return 0;
+
+ pciedev = to_pcie_device(dev);
+ driver = to_service_driver(dev->driver);
+ if (driver && driver->remove) {
+ dev_printk(KERN_DEBUG, dev, "unloading service driver %s\n",
+ driver->name);
+ driver->remove(pciedev);
+ put_device(dev);
+ }
+ return 0;
}
+/**
+ * pcie_port_shutdown_service - shut down given PCI Express port service
+ * @dev: PCI Express port service device to handle
+ *
+ * If PCI Express port service driver is registered with
+ * pcie_port_service_register(), this function will be called by the driver core
+ * when device_shutdown() is called for the port service device associated
+ * with the driver.
+ */
+static void pcie_port_shutdown_service(struct device *dev) {}
+
+/**
+ * pcie_port_service_register - register PCI Express port service driver
+ * @new: PCI Express port service driver to register
+ */
int pcie_port_service_register(struct pcie_port_service_driver *new)
{
new->driver.name = (char *)new->name;
new->driver.probe = pcie_port_probe_service;
new->driver.remove = pcie_port_remove_service;
new->driver.shutdown = pcie_port_shutdown_service;
- new->driver.suspend = pcie_port_suspend_service;
- new->driver.resume = pcie_port_resume_service;
return driver_register(&new->driver);
}
-void pcie_port_service_unregister(struct pcie_port_service_driver *new)
+/**
+ * pcie_port_service_unregister - unregister PCI Express port service driver
+ * @drv: PCI Express port service driver to unregister
+ */
+void pcie_port_service_unregister(struct pcie_port_service_driver *drv)
{
- driver_unregister(&new->driver);
+ driver_unregister(&drv->driver);
}
EXPORT_SYMBOL(pcie_port_service_register);
projects / linux-2.6-omap-h63xx.git / blobdiff