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drm/amdgpu/VCN2.0: add DPG pause mode 

Pause the DPG when not doing decode

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo Liu 2019-05-24 12:51:48 -04:00 committed by Alex Deucher
parent bf4865b587
commit 7282da0b3a
1 changed files with 70 additions and 0 deletions
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70
drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
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@ -77,6 +77,8 @@ static void vcn_v2_0_set_jpeg_ring_funcs(struct amdgpu_device *adev);
static void vcn_v2_0_set_irq_funcs(struct amdgpu_device *adev);
static int vcn_v2_0_set_powergating_state(void *handle,
enum amd_powergating_state state);
static int vcn_v2_0_pause_dpg_mode(struct amdgpu_device *adev,
struct dpg_pause_state *new_state);
/**
* vcn_v2_0_early_init - set function pointers
@ -192,6 +194,8 @@ static int vcn_v2_0_sw_init(void *handle)
if (r)
return r;
adev->vcn.pause_dpg_mode = vcn_v2_0_pause_dpg_mode;
adev->vcn.internal.jpeg_pitch = mmUVD_JPEG_PITCH_INTERNAL_OFFSET;
adev->vcn.external.jpeg_pitch = SOC15_REG_OFFSET(UVD, 0, mmUVD_JPEG_PITCH);
@ -1289,6 +1293,68 @@ static int vcn_v2_0_stop(struct amdgpu_device *adev)
return 0;
}
static int vcn_v2_0_pause_dpg_mode(struct amdgpu_device *adev,
struct dpg_pause_state *new_state)
{
struct amdgpu_ring *ring;
uint32_t reg_data = 0;
int ret_code;
/* pause/unpause if state is changed */
if (adev->vcn.pause_state.fw_based != new_state->fw_based) {
DRM_DEBUG("dpg pause state changed %d -> %d",
adev->vcn.pause_state.fw_based, new_state->fw_based);
reg_data = RREG32_SOC15(UVD, 0, mmUVD_DPG_PAUSE) &
(~UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK);
if (new_state->fw_based == VCN_DPG_STATE__PAUSE) {
ret_code = 0;
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_POWER_STATUS, 0x1,
UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);
if (!ret_code) {
/* pause DPG */
reg_data |= UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK;
WREG32_SOC15(UVD, 0, mmUVD_DPG_PAUSE, reg_data);
/* wait for ACK */
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_DPG_PAUSE,
UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK,
UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK, ret_code);
/* Restore */
ring = &adev->vcn.ring_enc[0];
WREG32_SOC15(UVD, 0, mmUVD_RB_BASE_LO, ring->gpu_addr);
WREG32_SOC15(UVD, 0, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
WREG32_SOC15(UVD, 0, mmUVD_RB_SIZE, ring->ring_size / 4);
WREG32_SOC15(UVD, 0, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
WREG32_SOC15(UVD, 0, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));
ring = &adev->vcn.ring_enc[1];
WREG32_SOC15(UVD, 0, mmUVD_RB_BASE_LO2, ring->gpu_addr);
WREG32_SOC15(UVD, 0, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
WREG32_SOC15(UVD, 0, mmUVD_RB_SIZE2, ring->ring_size / 4);
WREG32_SOC15(UVD, 0, mmUVD_RB_RPTR2, lower_32_bits(ring->wptr));
WREG32_SOC15(UVD, 0, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR,
RREG32_SOC15(UVD, 0, mmUVD_SCRATCH2) & 0x7FFFFFFF);
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_POWER_STATUS,
UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON,
UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);
}
} else {
/* unpause dpg, no need to wait */
reg_data &= ~UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK;
WREG32_SOC15(UVD, 0, mmUVD_DPG_PAUSE, reg_data);
}
adev->vcn.pause_state.fw_based = new_state->fw_based;
}
return 0;
}
static bool vcn_v2_0_is_idle(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@ -1367,6 +1433,10 @@ static void vcn_v2_0_dec_ring_set_wptr(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
WREG32_SOC15(UVD, 0, mmUVD_SCRATCH2,
lower_32_bits(ring->wptr) | 0x80000000);
if (ring->use_doorbell) {
adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr);
WDOORBELL32(ring->doorbell_index, lower_32_bits(ring->wptr));