In previous gfx9 parts, S_BARRIER shader instructions are implicitly S_WAITCNT 0 instructions as well. This setting turns off that mechanism in Arcturus and beyond. With this, shaders must follow the ISA guide insofar as putting in explicit S_WAITCNT operations even after an S_BARRIER.
v2: Fix patch title to list component Change-Id: I4f80d6bc0c795b62e1f71bbd09d063b7f75249fd Signed-off-by: Joseph Greathouse <[email protected]> --- drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 17 +++++++++++++++++ .../amd/include/asic_reg/gc/gc_9_0_sh_mask.h | 6 ++++-- 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 67ea6a9e13d9..ddde19f9d601 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -2441,6 +2441,22 @@ static void gfx_v9_0_init_gds_vmid(struct amdgpu_device *adev) } } +static void gfx_v9_0_init_sq_config(struct amdgpu_device *adev) +{ + uint32_t tmp; + + switch (adev->asic_type) { + case CHIP_ARCTURUS: + tmp = RREG32_SOC15(GC, 0, mmSQ_CONFIG); + tmp = REG_SET_FIELD(tmp, SQ_CONFIG, + DISABLE_BARRIER_WAITCNT, 1); + WREG32_SOC15(GC, 0, mmSQ_CONFIG, tmp); + break; + default: + break; + }; +} + static void gfx_v9_0_constants_init(struct amdgpu_device *adev) { u32 tmp; @@ -2486,6 +2502,7 @@ static void gfx_v9_0_constants_init(struct amdgpu_device *adev) gfx_v9_0_init_compute_vmid(adev); gfx_v9_0_init_gds_vmid(adev); + gfx_v9_0_init_sq_config(adev); } static void gfx_v9_0_wait_for_rlc_serdes(struct amdgpu_device *adev) diff --git a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_sh_mask.h b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_sh_mask.h index c9e3f6d849a8..ea316d8dcb37 100644 --- a/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_sh_mask.h +++ b/drivers/gpu/drm/amd/include/asic_reg/gc/gc_9_0_sh_mask.h @@ -2060,7 +2060,8 @@ // addressBlock: gc_sqdec //SQ_CONFIG -#define SQ_CONFIG__UNUSED__SHIFT 0x0 +#define SQ_CONFIG__DISABLE_BARRIER_WAITCNT__SHIFT 0x0 +#define SQ_CONFIG__UNUSED__SHIFT 0x1 #define SQ_CONFIG__OVERRIDE_ALU_BUSY__SHIFT 0x7 #define SQ_CONFIG__DEBUG_EN__SHIFT 0x8 #define SQ_CONFIG__DEBUG_SINGLE_MEMOP__SHIFT 0x9 @@ -2079,7 +2080,8 @@ #define SQ_CONFIG__DISABLE_SP_REDUNDANT_THREAD_GATING__SHIFT 0x1d #define SQ_CONFIG__DISABLE_FLAT_SOFT_CLAUSE__SHIFT 0x1e #define SQ_CONFIG__DISABLE_MIMG_SOFT_CLAUSE__SHIFT 0x1f -#define SQ_CONFIG__UNUSED_MASK 0x0000007FL +#define SQ_CONFIG__DISABLE_BARRIER_WAITCNT_MASK 0x00000001L +#define SQ_CONFIG__UNUSED_MASK 0x0000007EL #define SQ_CONFIG__OVERRIDE_ALU_BUSY_MASK 0x00000080L #define SQ_CONFIG__DEBUG_EN_MASK 0x00000100L #define SQ_CONFIG__DEBUG_SINGLE_MEMOP_MASK 0x00000200L -- 2.19.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
