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drm/amdgpu: add gfx8 pre soft reset 

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou 2016-07-15 15:18:25 +08:00 committed by Alex Deucher
parent d31a501ead
commit 1057f20c22
1 changed files with 58 additions and 0 deletions
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58
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
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@ -5111,6 +5111,63 @@ static int gfx_v8_0_check_soft_reset(void *handle)
return 0;
}
static void gfx_v8_0_inactive_hqd(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
int i;
vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
if (RREG32(mmCP_HQD_ACTIVE) & CP_HQD_ACTIVE__ACTIVE_MASK) {
u32 tmp;
tmp = RREG32(mmCP_HQD_DEQUEUE_REQUEST);
tmp = REG_SET_FIELD(tmp, CP_HQD_DEQUEUE_REQUEST,
DEQUEUE_REQ, 2);
WREG32(mmCP_HQD_DEQUEUE_REQUEST, tmp);
for (i = 0; i < adev->usec_timeout; i++) {
if (!(RREG32(mmCP_HQD_ACTIVE) & CP_HQD_ACTIVE__ACTIVE_MASK))
break;
udelay(1);
}
}
}
static int gfx_v8_0_pre_soft_reset(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
u32 grbm_soft_reset = 0, srbm_soft_reset = 0;
if (!adev->ip_block_status[AMD_IP_BLOCK_TYPE_GFX].hang)
return 0;
grbm_soft_reset = adev->gfx.grbm_soft_reset;
srbm_soft_reset = adev->gfx.srbm_soft_reset;
/* stop the rlc */
gfx_v8_0_rlc_stop(adev);
if (REG_GET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CP) ||
REG_GET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_GFX))
/* Disable GFX parsing/prefetching */
gfx_v8_0_cp_gfx_enable(adev, false);
if (REG_GET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CP) ||
REG_GET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CPF) ||
REG_GET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CPC) ||
REG_GET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CPG)) {
int i;
for (i = 0; i < adev->gfx.num_compute_rings; i++) {
struct amdgpu_ring *ring = &adev->gfx.compute_ring[i];
gfx_v8_0_inactive_hqd(adev, ring);
}
/* Disable MEC parsing/prefetching */
gfx_v8_0_cp_compute_enable(adev, false);
}
return 0;
}
static int gfx_v8_0_soft_reset(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@ -6357,6 +6414,7 @@ const struct amd_ip_funcs gfx_v8_0_ip_funcs = {
.is_idle = gfx_v8_0_is_idle,
.wait_for_idle = gfx_v8_0_wait_for_idle,
.check_soft_reset = gfx_v8_0_check_soft_reset,
.pre_soft_reset = gfx_v8_0_pre_soft_reset,
.soft_reset = gfx_v8_0_soft_reset,
.set_clockgating_state = gfx_v8_0_set_clockgating_state,
.set_powergating_state = gfx_v8_0_set_powergating_state,