From: Evan Quan Date: Tue, 25 May 2021 03:43:38 +0000 (+0800) Subject: drm/amdgpu: fix Navi1x tcp power gating hang when issuing lightweight invalidaiton X-Git-Tag: v5.15~303^2~20^2~273 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9c26ddb1c5b6e30c6bca48b8ad9205d96efe93d0;p=platform%2Fkernel%2Flinux-starfive.git drm/amdgpu: fix Navi1x tcp power gating hang when issuing lightweight invalidaiton Fix TCP hang when a lightweight invalidation happens on Navi1x. Signed-off-by: Evan Quan Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index ef08f29..d08a823 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -7961,6 +7961,97 @@ static void gfx_v10_0_update_fine_grain_clock_gating(struct amdgpu_device *adev, } } +static void gfx_v10_0_apply_medium_grain_clock_gating_workaround(struct amdgpu_device *adev) +{ + uint32_t reg_data = 0; + uint32_t reg_idx = 0; + uint32_t i; + + const uint32_t tcp_ctrl_regs[] = { + mmCGTS_SA0_WGP00_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP00_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP01_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP01_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP02_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP02_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP10_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP10_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP11_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP11_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP12_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP12_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP00_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP00_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP01_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP01_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP02_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP02_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP10_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP10_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP11_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP11_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP12_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP12_CU1_TCP_CTRL_REG + }; + + const uint32_t tcp_ctrl_regs_nv12[] = { + mmCGTS_SA0_WGP00_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP00_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP01_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP01_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP02_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP02_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP10_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP10_CU1_TCP_CTRL_REG, + mmCGTS_SA0_WGP11_CU0_TCP_CTRL_REG, + mmCGTS_SA0_WGP11_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP00_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP00_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP01_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP01_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP02_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP02_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP10_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP10_CU1_TCP_CTRL_REG, + mmCGTS_SA1_WGP11_CU0_TCP_CTRL_REG, + mmCGTS_SA1_WGP11_CU1_TCP_CTRL_REG, + }; + + const uint32_t sm_ctlr_regs[] = { + mmCGTS_SA0_QUAD0_SM_CTRL_REG, + mmCGTS_SA0_QUAD1_SM_CTRL_REG, + mmCGTS_SA1_QUAD0_SM_CTRL_REG, + mmCGTS_SA1_QUAD1_SM_CTRL_REG + }; + + if (adev->asic_type == CHIP_NAVI12) { + for (i = 0; i < ARRAY_SIZE(tcp_ctrl_regs_nv12); i++) { + reg_idx = adev->reg_offset[GC_HWIP][0][mmCGTS_SA0_WGP00_CU0_TCP_CTRL_REG_BASE_IDX] + + tcp_ctrl_regs_nv12[i]; + reg_data = RREG32(reg_idx); + reg_data |= CGTS_SA0_WGP00_CU0_TCP_CTRL_REG__TCPI_LS_OVERRIDE_MASK; + WREG32(reg_idx, reg_data); + } + } else { + for (i = 0; i < ARRAY_SIZE(tcp_ctrl_regs); i++) { + reg_idx = adev->reg_offset[GC_HWIP][0][mmCGTS_SA0_WGP00_CU0_TCP_CTRL_REG_BASE_IDX] + + tcp_ctrl_regs[i]; + reg_data = RREG32(reg_idx); + reg_data |= CGTS_SA0_WGP00_CU0_TCP_CTRL_REG__TCPI_LS_OVERRIDE_MASK; + WREG32(reg_idx, reg_data); + } + } + + for (i = 0; i < ARRAY_SIZE(sm_ctlr_regs); i++) { + reg_idx = adev->reg_offset[GC_HWIP][0][mmCGTS_SA0_QUAD0_SM_CTRL_REG_BASE_IDX] + + sm_ctlr_regs[i]; + reg_data = RREG32(reg_idx); + reg_data &= ~CGTS_SA0_QUAD0_SM_CTRL_REG__SM_MODE_MASK; + reg_data |= 2 << CGTS_SA0_QUAD0_SM_CTRL_REG__SM_MODE__SHIFT; + WREG32(reg_idx, reg_data); + } +} + static int gfx_v10_0_update_gfx_clock_gating(struct amdgpu_device *adev, bool enable) { @@ -7977,6 +8068,10 @@ static int gfx_v10_0_update_gfx_clock_gating(struct amdgpu_device *adev, gfx_v10_0_update_3d_clock_gating(adev, enable); /* === CGCG + CGLS === */ gfx_v10_0_update_coarse_grain_clock_gating(adev, enable); + + if ((adev->asic_type >= CHIP_NAVI10) && + (adev->asic_type <= CHIP_NAVI12)) + gfx_v10_0_apply_medium_grain_clock_gating_workaround(adev); } else { /* CGCG/CGLS should be disabled before MGCG/MGLS * === CGCG + CGLS ===