<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> [AMD Official Use Only - AMD Internal Distribution Only] <div> <div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Ping.</div> <div id="appendonsend"></div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr">From: Jiang, Sonny <Sonny.Jiang@amd.com> Sent: Friday, April 25, 2025 12:41 PM To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org> Cc: Jiang, Sonny <Sonny.Jiang@amd.com> Subject: [PATCH v2] drm/amdgpu: Add DPG pause for VCN v5.0.1 <div> </div> </div> <div class="BodyFragment"> <div class="PlainText">For vcn5.0.1 only, enable DPG PAUSE to avoid DPG resets. Signed-off-by: Sonny Jiang <sonny.jiang@amd.com> --- drivers/gpu/drm/amd/amdgpu/vcn_v5_0_1.c | 54 +++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_1.c b/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_1.c index 4b2e6a033831..60ee6e02e6ac 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_1.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_1.c @@ -502,6 +502,52 @@ static void vcn_v5_0_1_enable_clock_gating(struct amdgpu_vcn_inst *vinst) { } +/** + * vcn_v5_0_1_pause_dpg_mode - VCN pause with dpg mode + * + * @vinst: VCN instance + * @new_state: pause state + * + * Pause dpg mode for VCN block + */ +static int vcn_v5_0_1_pause_dpg_mode(struct amdgpu_vcn_inst *vinst, + struct dpg_pause_state *new_state) +{ + struct amdgpu_device *adev = vinst->adev; + uint32_t reg_data = 0; + int vcn_inst; + + vcn_inst = GET_INST(VCN, vinst->inst); + + /* pause/unpause if state is changed */ + if (vinst->pause_state.fw_based != new_state->fw_based) { + DRM_DEV_DEBUG(adev->dev, "dpg pause state changed %d -> %d %s\n", + vinst->pause_state.fw_based, new_state->fw_based, + new_state->fw_based ? "VCN_DPG_STATE__PAUSE" : "VCN_DPG_STATE__UNPAUSE"); + reg_data = RREG32_SOC15(VCN, vcn_inst, regUVD_DPG_PAUSE) & + (~UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK); + + if (new_state->fw_based == VCN_DPG_STATE__PAUSE) { + /* pause DPG */ + reg_data |= UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK; + WREG32_SOC15(VCN, vcn_inst, regUVD_DPG_PAUSE, reg_data); + + /* wait for ACK */ + SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_DPG_PAUSE, + UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK, + UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK); + } else { + /* unpause DPG, no need to wait */ + reg_data &= ~UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK; + WREG32_SOC15(VCN, vcn_inst, regUVD_DPG_PAUSE, reg_data); + } + vinst->pause_state.fw_based = new_state->fw_based; + } + + return 0; +} + + /** * vcn_v5_0_1_start_dpg_mode - VCN start with dpg mode * @@ -518,6 +564,7 @@ static int vcn_v5_0_1_start_dpg_mode(struct amdgpu_vcn_inst *vinst, volatile struct amdgpu_vcn5_fw_shared *fw_shared = adev->vcn.inst[inst_idx].fw_shared.cpu_addr; struct amdgpu_ring *ring; + struct dpg_pause_state state = {.fw_based = VCN_DPG_STATE__PAUSE}; int vcn_inst; uint32_t tmp; @@ -582,6 +629,9 @@ static int vcn_v5_0_1_start_dpg_mode(struct amdgpu_vcn_inst *vinst, if (indirect) amdgpu_vcn_psp_update_sram(adev, inst_idx, AMDGPU_UCODE_ID_VCN0_RAM); + /* Pause dpg */ + vcn_v5_0_1_pause_dpg_mode(vinst, &state); + ring = &adev->vcn.inst[inst_idx].ring_enc[0]; WREG32_SOC15(VCN, vcn_inst, regUVD_RB_BASE_LO, lower_32_bits(ring->gpu_addr)); @@ -775,9 +825,13 @@ static void vcn_v5_0_1_stop_dpg_mode(struct amdgpu_vcn_inst *vinst) int inst_idx = vinst->inst; uint32_t tmp; int vcn_inst; + struct dpg_pause_state state = {.fw_based = VCN_DPG_STATE__UNPAUSE}; vcn_inst = GET_INST(VCN, inst_idx); + /* Unpause dpg */ + vcn_v5_0_1_pause_dpg_mode(vinst, &state); + /* Wait for power status to be 1 */ SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_POWER_STATUS, 1, UVD_POWER_STATUS__UVD_POWER_STATUS_MASK); -- 2.49.0 </div> </div> </div> </body> </html>