#include <linux/module.h>
#include <linux/pci-aspm.h>
#include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acresrc.h>
#include <acpi/acpi_bus.h>
#include <linux/pci-acpi.h>
#include "pci.h"
-struct acpi_osc_data {
- acpi_handle handle;
- u32 support_set;
- u32 control_set;
- u32 control_query;
- int is_queried;
- struct list_head sibiling;
-};
-static LIST_HEAD(acpi_osc_data_list);
-
-struct acpi_osc_args {
- u32 capbuf[3];
-};
-
-static DEFINE_MUTEX(pci_acpi_lock);
-
-static struct acpi_osc_data *acpi_get_osc_data(acpi_handle handle)
-{
- struct acpi_osc_data *data;
-
- list_for_each_entry(data, &acpi_osc_data_list, sibiling) {
- if (data->handle == handle)
- return data;
- }
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (!data)
- return NULL;
- INIT_LIST_HEAD(&data->sibiling);
- data->handle = handle;
- list_add_tail(&data->sibiling, &acpi_osc_data_list);
- return data;
-}
-
-static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40,
- 0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66};
-
-static acpi_status acpi_run_osc(acpi_handle handle,
- struct acpi_osc_args *osc_args, u32 *retval)
-{
- acpi_status status;
- struct acpi_object_list input;
- union acpi_object in_params[4];
- struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
- union acpi_object *out_obj;
- u32 errors, flags = osc_args->capbuf[OSC_QUERY_TYPE];
-
- /* Setting up input parameters */
- input.count = 4;
- input.pointer = in_params;
- in_params[0].type = ACPI_TYPE_BUFFER;
- in_params[0].buffer.length = 16;
- in_params[0].buffer.pointer = OSC_UUID;
- in_params[1].type = ACPI_TYPE_INTEGER;
- in_params[1].integer.value = 1;
- in_params[2].type = ACPI_TYPE_INTEGER;
- in_params[2].integer.value = 3;
- in_params[3].type = ACPI_TYPE_BUFFER;
- in_params[3].buffer.length = 12;
- in_params[3].buffer.pointer = (u8 *)osc_args->capbuf;
-
- status = acpi_evaluate_object(handle, "_OSC", &input, &output);
- if (ACPI_FAILURE(status))
- return status;
-
- if (!output.length)
- return AE_NULL_OBJECT;
-
- out_obj = output.pointer;
- if (out_obj->type != ACPI_TYPE_BUFFER) {
- printk(KERN_DEBUG "Evaluate _OSC returns wrong type\n");
- status = AE_TYPE;
- goto out_kfree;
- }
- /* Need to ignore the bit0 in result code */
- errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0);
- if (errors) {
- if (errors & OSC_REQUEST_ERROR)
- printk(KERN_DEBUG "_OSC request fails\n");
- if (errors & OSC_INVALID_UUID_ERROR)
- printk(KERN_DEBUG "_OSC invalid UUID\n");
- if (errors & OSC_INVALID_REVISION_ERROR)
- printk(KERN_DEBUG "_OSC invalid revision\n");
- if (errors & OSC_CAPABILITIES_MASK_ERROR) {
- if (flags & OSC_QUERY_ENABLE)
- goto out_success;
- printk(KERN_DEBUG "_OSC FW not grant req. control\n");
- status = AE_SUPPORT;
- goto out_kfree;
- }
- status = AE_ERROR;
- goto out_kfree;
- }
-out_success:
- *retval = *((u32 *)(out_obj->buffer.pointer + 8));
- status = AE_OK;
-
-out_kfree:
- kfree(output.pointer);
- return status;
-}
-
-static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data)
-{
- acpi_status status;
- u32 support_set, result;
- struct acpi_osc_args osc_args;
-
- /* do _OSC query for all possible controls */
- support_set = osc_data->support_set | (flags & OSC_SUPPORT_MASKS);
- osc_args.capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
- osc_args.capbuf[OSC_SUPPORT_TYPE] = support_set;
- osc_args.capbuf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS;
-
- status = acpi_run_osc(osc_data->handle, &osc_args, &result);
- if (ACPI_SUCCESS(status)) {
- osc_data->support_set = support_set;
- osc_data->control_query = result;
- osc_data->is_queried = 1;
- }
-
- return status;
-}
-
-/*
- * pci_acpi_osc_support: Invoke _OSC indicating support for the given feature
- * @flags: Bitmask of flags to support
- *
- * See the ACPI spec for the definition of the flags
- */
-int pci_acpi_osc_support(acpi_handle handle, u32 flags)
-{
- acpi_status status;
- acpi_handle tmp;
- struct acpi_osc_data *osc_data;
- int rc = 0;
-
- status = acpi_get_handle(handle, "_OSC", &tmp);
- if (ACPI_FAILURE(status))
- return -ENOTTY;
-
- mutex_lock(&pci_acpi_lock);
- osc_data = acpi_get_osc_data(handle);
- if (!osc_data) {
- printk(KERN_ERR "acpi osc data array is full\n");
- rc = -ENOMEM;
- goto out;
- }
-
- __acpi_query_osc(flags, osc_data);
-out:
- mutex_unlock(&pci_acpi_lock);
- return rc;
-}
-
-/**
- * pci_osc_control_set - commit requested control to Firmware
- * @handle: acpi_handle for the target ACPI object
- * @flags: driver's requested control bits
- *
- * Attempt to take control from Firmware on requested control bits.
- **/
-acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
-{
- acpi_status status;
- u32 control_req, control_set, result;
- acpi_handle tmp;
- struct acpi_osc_data *osc_data;
- struct acpi_osc_args osc_args;
-
- status = acpi_get_handle(handle, "_OSC", &tmp);
- if (ACPI_FAILURE(status))
- return status;
-
- mutex_lock(&pci_acpi_lock);
- osc_data = acpi_get_osc_data(handle);
- if (!osc_data) {
- printk(KERN_ERR "acpi osc data array is full\n");
- status = AE_ERROR;
- goto out;
- }
-
- control_req = (flags & OSC_CONTROL_MASKS);
- if (!control_req) {
- status = AE_TYPE;
- goto out;
- }
-
- /* No need to evaluate _OSC if the control was already granted. */
- if ((osc_data->control_set & control_req) == control_req)
- goto out;
-
- if (!osc_data->is_queried) {
- status = __acpi_query_osc(osc_data->support_set, osc_data);
- if (ACPI_FAILURE(status))
- goto out;
- }
-
- if ((osc_data->control_query & control_req) != control_req) {
- status = AE_SUPPORT;
- goto out;
- }
-
- control_set = osc_data->control_set | control_req;
- osc_args.capbuf[OSC_QUERY_TYPE] = 0;
- osc_args.capbuf[OSC_SUPPORT_TYPE] = osc_data->support_set;
- osc_args.capbuf[OSC_CONTROL_TYPE] = control_set;
- status = acpi_run_osc(handle, &osc_args, &result);
- if (ACPI_SUCCESS(status))
- osc_data->control_set = result;
-out:
- mutex_unlock(&pci_acpi_lock);
- return status;
-}
-EXPORT_SYMBOL(pci_osc_control_set);
-
/*
* _SxD returns the D-state with the highest power
* (lowest D-state number) supported in the S-state "x".
return handle ? acpi_bus_can_wakeup(handle) : false;
}
+static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable)
+{
+ while (bus->parent) {
+ struct pci_dev *bridge = bus->self;
+ int ret;
+
+ ret = acpi_pm_device_sleep_wake(&bridge->dev, enable);
+ if (!ret || bridge->is_pcie)
+ return;
+ bus = bus->parent;
+ }
+
+ /* We have reached the root bus. */
+ if (bus->bridge)
+ acpi_pm_device_sleep_wake(bus->bridge, enable);
+}
+
static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
{
- int error = acpi_pm_device_sleep_wake(&dev->dev, enable);
+ if (acpi_pci_can_wakeup(dev))
+ return acpi_pm_device_sleep_wake(&dev->dev, enable);
- if (!error)
- dev_printk(KERN_INFO, &dev->dev,
- "wake-up capability %s by ACPI\n",
- enable ? "enabled" : "disabled");
- return error;
+ if (!dev->is_pcie)
+ acpi_pci_propagate_wakeup_enable(dev->bus, enable);
+
+ return 0;
}
static struct pci_platform_pm_ops acpi_pci_platform_pm = {
{
int ret;
- if (acpi_gbl_FADT.boot_flags & BAF_MSI_NOT_SUPPORTED) {
+ if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_MSI) {
printk(KERN_INFO"ACPI FADT declares the system doesn't support MSI, so disable it\n");
pci_no_msi();
}
- if (acpi_gbl_FADT.boot_flags & BAF_PCIE_ASPM_CONTROL) {
+ if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) {
printk(KERN_INFO"ACPI FADT declares the system doesn't support PCIe ASPM, so disable it\n");
pcie_no_aspm();
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff