int acpi_pci_unbind( struct acpi_device *device) { int result = 0; acpi_status status = AE_OK; struct acpi_pci_data *data = NULL; char *pathname = NULL; struct acpi_buffer buffer = {0, NULL}; ACPI_FUNCTION_TRACE("acpi_pci_unbind"); if (!device || !device->parent) return_VALUE(-EINVAL); pathname = (char *) kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL); if(!pathname) return_VALUE(-ENOMEM); memset(pathname, 0, ACPI_PATHNAME_MAX); buffer.length = ACPI_PATHNAME_MAX; buffer.pointer = pathname; acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer); ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n", pathname)); kfree(pathname); status = acpi_get_data(device->handle, acpi_pci_data_handler, (void**)&data); if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to get data from device %s\n", acpi_device_bid(device))); result = -ENODEV; goto end; } status = acpi_detach_data(device->handle, acpi_pci_data_handler); if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to detach data from device %s\n", acpi_device_bid(device))); result = -ENODEV; goto end; } if (data->dev->subordinate) { acpi_pci_irq_del_prt(data->id.segment, data->bus->number); } kfree(data); end: return_VALUE(result); }
int acpi_bus_get_private_data(acpi_handle handle, void **data) { acpi_status status; if (!*data) return -EINVAL; status = acpi_get_data(handle, acpi_bus_private_data_handler, data); if (ACPI_FAILURE(status)) { acpi_handle_debug(handle, "No context for object\n"); return -ENODEV; } return 0; }
int acpi_bus_get_private_data(acpi_handle handle, void **data) { acpi_status status = AE_OK; if (!*data) return -EINVAL; status = acpi_get_data(handle, acpi_bus_private_data_handler, data); if (ACPI_FAILURE(status) || !*data) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", handle)); return -ENODEV; } return 0; }
acpi_status acpi_os_get_pci_id ( acpi_handle handle, struct acpi_pci_id *id) { int result = 0; acpi_status status = AE_OK; struct acpi_device *device = NULL; struct acpi_pci_data *data = NULL; ACPI_FUNCTION_TRACE("acpi_os_get_pci_id"); if (!id) return_ACPI_STATUS(AE_BAD_PARAMETER); result = acpi_bus_get_device(handle, &device); if (result) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid ACPI Bus context for device %s\n", acpi_device_bid(device))); return_ACPI_STATUS(AE_NOT_EXIST); } status = acpi_get_data(handle, acpi_pci_data_handler, (void**) &data); if (ACPI_FAILURE(status) || !data || !data->dev) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid ACPI-PCI context for device %s\n", acpi_device_bid(device))); return_ACPI_STATUS(status); } *id = data->id; /* id->segment = data->id.segment; id->bus = data->id.bus; id->device = data->id.device; id->function = data->id.function; */ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device %s has PCI address %02x:%02x:%02x.%02x\n", acpi_device_bid(device), id->segment, id->bus, id->device, id->function)); return_ACPI_STATUS(AE_OK); }
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) { acpi_status status; if (!device) return -EINVAL; /* TBD: Support fixed-feature devices */ status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device); if (ACPI_FAILURE(status) || !*device) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", handle)); return -ENODEV; } return 0; }
static int acpi_pci_unbind(struct acpi_device *device) { int result = 0; acpi_status status; struct acpi_pci_data *data; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; if (!device || !device->parent) return -EINVAL; status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer); if (ACPI_FAILURE(status)) return -ENODEV; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n", (char *) buffer.pointer)); kfree(buffer.pointer); status = acpi_get_data(device->handle, acpi_pci_data_handler, (void **)&data); if (ACPI_FAILURE(status)) { result = -ENODEV; goto end; } status = acpi_detach_data(device->handle, acpi_pci_data_handler); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Unable to detach data from device %s", acpi_device_bid(device))); result = -ENODEV; goto end; } if (data->dev->subordinate) { acpi_pci_irq_del_prt(data->id.segment, data->bus->number); } pci_dev_put(data->dev); kfree(data); end: return result; }
/** * acpi_get_pci_id * ------------------ * This function is used by the ACPI Interpreter (a.k.a. Core Subsystem) * to resolve PCI information for ACPI-PCI devices defined in the namespace. * This typically occurs when resolving PCI operation region information. */ acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id) { int result = 0; acpi_status status = AE_OK; struct acpi_device *device = NULL; struct acpi_pci_data *data = NULL; if (!id) return AE_BAD_PARAMETER; result = acpi_bus_get_device(handle, &device); if (result) { printk(KERN_ERR PREFIX "Invalid ACPI Bus context for device %s\n", acpi_device_bid(device)); return AE_NOT_EXIST; } status = acpi_get_data(handle, acpi_pci_data_handler, (void **)&data); if (ACPI_FAILURE(status) || !data) { ACPI_EXCEPTION((AE_INFO, status, "Invalid ACPI-PCI context for device %s", acpi_device_bid(device))); return status; } *id = data->id; /* id->segment = data->id.segment; id->bus = data->id.bus; id->device = data->id.device; id->function = data->id.function; */ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device %s has PCI address %04x:%02x:%02x.%d\n", acpi_device_bid(device), id->segment, id->bus, id->device, id->function)); return AE_OK; }
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) { acpi_status status = AE_OK; ACPI_FUNCTION_TRACE("acpi_bus_get_device"); if (!device) return_VALUE(-EINVAL); /* TBD: Support fixed-feature devices */ status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device); if (ACPI_FAILURE(status) || !*device) { ACPI_DEBUG_PRINT((ACPI_DB_WARN, "No context for object [%p]\n", handle)); return_VALUE(-ENODEV); } return_VALUE(0); }
/** * acpi_gpiochip_free_interrupts() - Free GPIO _EVT ACPI event interrupts. * @chip: gpio chip * * Free interrupts associated with the _EVT method for the given GPIO chip. * * The remaining ACPI event interrupts associated with the chip are freed * automatically. */ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { acpi_handle handle; acpi_status status; struct list_head *evt_pins; struct acpi_gpio_evt_pin *evt_pin, *ep; if (!chip->dev || !chip->to_irq) return; handle = ACPI_HANDLE(chip->dev); if (!handle) return; status = acpi_get_data(handle, acpi_gpio_evt_dh, (void **)&evt_pins); if (ACPI_FAILURE(status)) return; list_for_each_entry_safe_reverse(evt_pin, ep, evt_pins, node) { devm_free_irq(chip->dev, evt_pin->irq, evt_pin); list_del(&evt_pin->node); kfree(evt_pin); }
int acpi_pci_bind(struct acpi_device *device) { int result = 0; acpi_status status; struct acpi_pci_data *data; struct acpi_pci_data *pdata; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; acpi_handle handle; if (!device || !device->parent) return -EINVAL; data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL); if (!data) return -ENOMEM; status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer); if (ACPI_FAILURE(status)) { kfree(data); return -ENODEV; } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n", (char *)buffer.pointer)); /* * Segment & Bus * ------------- * These are obtained via the parent device's ACPI-PCI context. */ status = acpi_get_data(device->parent->handle, acpi_pci_data_handler, (void **)&pdata); if (ACPI_FAILURE(status) || !pdata || !pdata->bus) { ACPI_EXCEPTION((AE_INFO, status, "Invalid ACPI-PCI context for parent device %s", acpi_device_bid(device->parent))); result = -ENODEV; goto end; } data->id.segment = pdata->id.segment; data->id.bus = pdata->bus->number; /* * Device & Function * ----------------- * These are simply obtained from the device's _ADR method. Note * that a value of zero is valid. */ data->id.device = device->pnp.bus_address >> 16; data->id.function = device->pnp.bus_address & 0xFFFF; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %04x:%02x:%02x.%d\n", data->id.segment, data->id.bus, data->id.device, data->id.function)); /* * TBD: Support slot devices (e.g. function=0xFFFF). */ /* * Locate PCI Device * ----------------- * Locate matching device in PCI namespace. If it doesn't exist * this typically means that the device isn't currently inserted * (e.g. docking station, port replicator, etc.). */ data->dev = pci_get_slot(pdata->bus, PCI_DEVFN(data->id.device, data->id.function)); if (!data->dev) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device %04x:%02x:%02x.%d not present in PCI namespace\n", data->id.segment, data->id.bus, data->id.device, data->id.function)); result = -ENODEV; goto end; } if (!data->dev->bus) { printk(KERN_ERR PREFIX "Device %04x:%02x:%02x.%d has invalid 'bus' field\n", data->id.segment, data->id.bus, data->id.device, data->id.function); result = -ENODEV; goto end; } /* * PCI Bridge? * ----------- * If so, set the 'bus' field and install the 'bind' function to * facilitate callbacks for all of its children. */ if (data->dev->subordinate) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device %04x:%02x:%02x.%d is a PCI bridge\n", data->id.segment, data->id.bus, data->id.device, data->id.function)); data->bus = data->dev->subordinate; device->ops.bind = acpi_pci_bind; device->ops.unbind = acpi_pci_unbind; } /* * Attach ACPI-PCI Context * ----------------------- * Thus binding the ACPI and PCI devices. */ status = acpi_attach_data(device->handle, acpi_pci_data_handler, data); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Unable to attach ACPI-PCI context to device %s", acpi_device_bid(device))); result = -ENODEV; goto end; } /* * PCI Routing Table * ----------------- * Evaluate and parse _PRT, if exists. This code is independent of * PCI bridges (above) to allow parsing of _PRT objects within the * scope of non-bridge devices. Note that _PRTs within the scope of * a PCI bridge assume the bridge's subordinate bus number. * * TBD: Can _PRTs exist within the scope of non-bridge PCI devices? */ status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle); if (ACPI_SUCCESS(status)) { if (data->bus) /* PCI-PCI bridge */ acpi_pci_irq_add_prt(device->handle, data->id.segment, data->bus->number); else /* non-bridge PCI device */ acpi_pci_irq_add_prt(device->handle, data->id.segment, data->id.bus); } end: kfree(buffer.pointer); if (result) { pci_dev_put(data->dev); kfree(data); } return result; }