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| author | Nirmoy Das <nirmoy.das@amd.com> | 2021-01-27 11:35:54 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-02-09 15:27:04 -0500 |
| commit | 0a52a6cacca6030374fca7087e8556b382cca0e3 (patch) | |
| tree | 733da3806d50d8266fd1a5d576acb07defbd6dd5 /drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | |
| parent | 8c0225d79273968a65e73a4204fba023ae02714d (diff) | |
drm/amdgpu: add wave limit functionality for gfx8,9
Wave limiting can be use to load balance high priority
compute jobs along with gfx jobs. When enabled, this will reserve
~75% of waves for compute jobs.
We do not need this from gfx10 onwards because >=gfx10 has
asynchronous compute tunneling to replace wave limit requirement.
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 7b13f9dd965a..027997e95e46 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -52,6 +52,7 @@ #include "asic_reg/pwr/pwr_10_0_offset.h" #include "asic_reg/pwr/pwr_10_0_sh_mask.h" +#include "asic_reg/gc/gc_9_0_default.h" #define GFX9_NUM_GFX_RINGS 1 #define GFX9_MEC_HPD_SIZE 4096 @@ -6667,6 +6668,22 @@ static void gfx_v9_0_emit_mem_sync(struct amdgpu_ring *ring) amdgpu_ring_write(ring, 0x0000000A); /* POLL_INTERVAL */ } +static void gfx_v9_0_emit_wave_limit(struct amdgpu_ring *ring, bool enable) +{ + struct amdgpu_device *adev = ring->adev; + uint32_t val; + + + /* mmSPI_WCL_PIPE_PERCENT_GFX is 7 bit multiplier register to limit + * number of gfx waves. Setting 5 bit will make sure gfx only gets + * around 25% of gpu resources. + */ + val = enable ? 0x1f : mmSPI_WCL_PIPE_PERCENT_GFX_DEFAULT; + amdgpu_ring_emit_wreg(ring, + SOC15_REG_OFFSET(GC, 0, mmSPI_WCL_PIPE_PERCENT_GFX), + val); +} + static const struct amd_ip_funcs gfx_v9_0_ip_funcs = { .name = "gfx_v9_0", .early_init = gfx_v9_0_early_init, @@ -6756,7 +6773,8 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = { SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 7 + 2 + /* gfx_v9_0_ring_emit_vm_flush */ 8 + 8 + 8 + /* gfx_v9_0_ring_emit_fence x3 for user fence, vm fence */ - 7, /* gfx_v9_0_emit_mem_sync */ + 7 + /* gfx_v9_0_emit_mem_sync */ + 5, /* gfx_v9_0_emit_wave_limit for updating mmSPI_WCL_PIPE_PERCENT_GFX register */ .emit_ib_size = 7, /* gfx_v9_0_ring_emit_ib_compute */ .emit_ib = gfx_v9_0_ring_emit_ib_compute, .emit_fence = gfx_v9_0_ring_emit_fence, @@ -6772,6 +6790,7 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = { .emit_reg_wait = gfx_v9_0_ring_emit_reg_wait, .emit_reg_write_reg_wait = gfx_v9_0_ring_emit_reg_write_reg_wait, .emit_mem_sync = gfx_v9_0_emit_mem_sync, + .emit_wave_limit = gfx_v9_0_emit_wave_limit, }; static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_kiq = { |