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drm/radeon: Add ATC VMID<-->PASID functions to kfd->kgd 

This patch adds three new interfaces to kfd2kgd interface file of radeon.

The interfaces are:

- Check if a specific VMID has a valid PASID mapping
- Retrieve the PASID which is mapped to a specific VMID
- Issue a VMID invalidation request to the ATC

Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Alexey Skidanov 2015-05-19 19:25:01 +03:00 committed by Oded Gabbay
parent f8bd13338a
commit edad40239f
3 changed files with 50 additions and 5 deletions
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8
drivers/gpu/drm/amd/include/kgd_kfd_interface.h
View File

@ -175,6 +175,14 @@ struct kfd2kgd_calls {
uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd,
unsigned int watch_point_id,
unsigned int reg_offset);
bool (*get_atc_vmid_pasid_mapping_valid)(
struct kgd_dev *kgd,
uint8_t vmid);
uint16_t (*get_atc_vmid_pasid_mapping_pasid)(
struct kgd_dev *kgd,
uint8_t vmid);
void (*write_vmid_invalidate_request)(struct kgd_dev *kgd,
uint8_t vmid);
uint16_t (*get_fw_version)(struct kgd_dev *kgd,
enum kgd_engine_type type);

7
drivers/gpu/drm/radeon/cikd.h
View File

@ -2148,9 +2148,12 @@
#define VCE_CMD_IB_AUTO 0x00000005
#define VCE_CMD_SEMAPHORE 0x00000006
#define ATC_VMID0_PASID_MAPPING 0x339Cu
#define ATC_VMID_PASID_MAPPING_UPDATE_STATUS 0x3398u
#define ATC_VMID_PASID_MAPPING_VALID (1U << 31)
#define ATC_VMID0_PASID_MAPPING 0x339Cu
#define ATC_VMID_PASID_MAPPING_PASID_MASK (0xFFFF)
#define ATC_VMID_PASID_MAPPING_PASID_SHIFT 0
#define ATC_VMID_PASID_MAPPING_VALID_MASK (0x1 << 31)
#define ATC_VMID_PASID_MAPPING_VALID_SHIFT 31
#define ATC_VM_APERTURE0_CNTL 0x3310u
#define ATS_ACCESS_MODE_NEVER 0

38
drivers/gpu/drm/radeon/radeon_kfd.c
View File

@ -99,6 +99,11 @@ static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
unsigned int watch_point_id,
unsigned int reg_offset);
static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd, uint8_t vmid);
static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
uint8_t vmid);
static void write_vmid_invalidate_request(struct kgd_dev *kgd, uint8_t vmid);
static const struct kfd2kgd_calls kfd2kgd = {
.init_gtt_mem_allocation = alloc_gtt_mem,
.free_gtt_mem = free_gtt_mem,
@ -119,6 +124,9 @@ static const struct kfd2kgd_calls kfd2kgd = {
.address_watch_execute = kgd_address_watch_execute,
.wave_control_execute = kgd_wave_control_execute,
.address_watch_get_offset = kgd_address_watch_get_offset,
.get_atc_vmid_pasid_mapping_pasid = get_atc_vmid_pasid_mapping_pasid,
.get_atc_vmid_pasid_mapping_valid = get_atc_vmid_pasid_mapping_valid,
.write_vmid_invalidate_request = write_vmid_invalidate_request,
.get_fw_version = get_fw_version
};
@ -395,8 +403,8 @@ static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
* the SW cleared it.
* So the protocol is to always wait & clear.
*/
uint32_t pasid_mapping = (pasid == 0) ? 0 :
(uint32_t)pasid | ATC_VMID_PASID_MAPPING_VALID;
uint32_t pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
ATC_VMID_PASID_MAPPING_VALID_MASK;
write_register(kgd, ATC_VMID0_PASID_MAPPING + vmid*sizeof(uint32_t),
pasid_mapping);
@ -778,6 +786,32 @@ static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
return watchRegs[watch_point_id * ADDRESS_WATCH_REG_MAX + reg_offset];
}
static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd, uint8_t vmid)
{
uint32_t reg;
struct radeon_device *rdev = (struct radeon_device *) kgd;
reg = RREG32(ATC_VMID0_PASID_MAPPING + vmid*4);
return reg & ATC_VMID_PASID_MAPPING_VALID_MASK;
}
static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
uint8_t vmid)
{
uint32_t reg;
struct radeon_device *rdev = (struct radeon_device *) kgd;
reg = RREG32(ATC_VMID0_PASID_MAPPING + vmid*4);
return reg & ATC_VMID_PASID_MAPPING_PASID_MASK;
}
static void write_vmid_invalidate_request(struct kgd_dev *kgd, uint8_t vmid)
{
struct radeon_device *rdev = (struct radeon_device *) kgd;
return WREG32(VM_INVALIDATE_REQUEST, 1 << vmid);
}
static uint16_t get_fw_version(struct kgd_dev *kgd, enum kgd_engine_type type)
{
struct radeon_device *rdev = (struct radeon_device *) kgd;