ACPI: cleanup pci_root _OSC code.
Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>hifive-unleashed-5.1
Shaohua Li
Len Brown
parent
70023de88c
commit
3a9622dc46
|
|
@ -202,72 +202,24 @@ static void acpi_pci_bridge_scan(struct acpi_device *device)
|
|||
}
|
||||
}
|
||||
|
||||
static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40,
|
||||
0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66};
|
||||
static u8 pci_osc_uuid_str[] = "33DB4D5B-1FF7-401C-9657-7441C03DD766";
|
||||
|
||||
static acpi_status acpi_pci_run_osc(acpi_handle handle,
|
||||
const u32 *capbuf, u32 *retval)
|
||||
{
|
||||
struct acpi_osc_context context = {
|
||||
.uuid_str = pci_osc_uuid_str,
|
||||
.rev = 1,
|
||||
.cap.length = 12,
|
||||
.cap.pointer = (void *)capbuf,
|
||||
};
|
||||
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;
|
||||
|
||||
/* 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 *)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 "_OSC evaluation returned wrong type\n");
|
||||
status = AE_TYPE;
|
||||
goto out_kfree;
|
||||
status = acpi_run_osc(handle, &context);
|
||||
if (ACPI_SUCCESS(status)) {
|
||||
*retval = *((u32 *)(context.ret.pointer + 8));
|
||||
kfree(context.ret.pointer);
|
||||
}
|
||||
/* 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 failed\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 (capbuf[OSC_QUERY_TYPE] & OSC_QUERY_ENABLE)
|
||||
goto out_success;
|
||||
printk(KERN_DEBUG
|
||||
"Firmware did not grant requested _OSC 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;
|
||||
}
|
||||
|
||||
|
|
@ -277,10 +229,10 @@ static acpi_status acpi_pci_query_osc(struct acpi_pci_root *root, u32 flags)
|
|||
u32 support_set, result, capbuf[3];
|
||||
|
||||
/* do _OSC query for all possible controls */
|
||||
support_set = root->osc_support_set | (flags & OSC_SUPPORT_MASKS);
|
||||
support_set = root->osc_support_set | (flags & OSC_PCI_SUPPORT_MASKS);
|
||||
capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
|
||||
capbuf[OSC_SUPPORT_TYPE] = support_set;
|
||||
capbuf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS;
|
||||
capbuf[OSC_CONTROL_TYPE] = OSC_PCI_CONTROL_MASKS;
|
||||
|
||||
status = acpi_pci_run_osc(root->device->handle, capbuf, &result);
|
||||
if (ACPI_SUCCESS(status)) {
|
||||
|
|
@ -427,7 +379,7 @@ acpi_status acpi_pci_osc_control_set(acpi_handle handle, u32 flags)
|
|||
if (ACPI_FAILURE(status))
|
||||
return status;
|
||||
|
||||
control_req = (flags & OSC_CONTROL_MASKS);
|
||||
control_req = (flags & OSC_PCI_CONTROL_MASKS);
|
||||
if (!control_req)
|
||||
return AE_TYPE;
|
||||
|
||||
|
|
|
|||
|
|
@ -263,7 +263,6 @@ struct acpi_osc_context {
|
|||
#define OSC_QUERY_TYPE 0
|
||||
#define OSC_SUPPORT_TYPE 1
|
||||
#define OSC_CONTROL_TYPE 2
|
||||
#define OSC_SUPPORT_MASKS 0x1f
|
||||
|
||||
/* _OSC DW0 Definition */
|
||||
#define OSC_QUERY_ENABLE 1
|
||||
|
|
@ -274,12 +273,14 @@ struct acpi_osc_context {
|
|||
|
||||
acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
|
||||
|
||||
/* PCI defined _OSC bits */
|
||||
/* _OSC DW1 Definition (OS Support Fields) */
|
||||
#define OSC_EXT_PCI_CONFIG_SUPPORT 1
|
||||
#define OSC_ACTIVE_STATE_PWR_SUPPORT 2
|
||||
#define OSC_CLOCK_PWR_CAPABILITY_SUPPORT 4
|
||||
#define OSC_PCI_SEGMENT_GROUPS_SUPPORT 8
|
||||
#define OSC_MSI_SUPPORT 16
|
||||
#define OSC_PCI_SUPPORT_MASKS 0x1f
|
||||
|
||||
/* _OSC DW1 Definition (OS Control Fields) */
|
||||
#define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL 1
|
||||
|
|
@ -288,7 +289,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
|
|||
#define OSC_PCI_EXPRESS_AER_CONTROL 8
|
||||
#define OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL 16
|
||||
|
||||
#define OSC_CONTROL_MASKS (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL | \
|
||||
#define OSC_PCI_CONTROL_MASKS (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL | \
|
||||
OSC_SHPC_NATIVE_HP_CONTROL | \
|
||||
OSC_PCI_EXPRESS_PME_CONTROL | \
|
||||
OSC_PCI_EXPRESS_AER_CONTROL | \
|
||||
|
|
|
|||
Loading…
Reference in New Issue