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drm/amdgpu: add high priority compute support for gfx9

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We follow the same approach as gfx8. The only changes are register
access macros.

Tested on vega10. The execution latency results fall within the expected
ranges from the polaris10 data.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andres Rodriguez 2018-01-02 15:49:40 -05:00 committed by Alex Deucher
parent 10cd19c877
commit 761c77c195
1 changed files with 100 additions and 0 deletions
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100
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -3735,6 +3735,105 @@ static u64 gfx_v9_0_ring_get_wptr_compute(struct amdgpu_ring *ring)
return wptr;
}
static void gfx_v9_0_ring_set_pipe_percent(struct amdgpu_ring *ring,
bool acquire)
{
struct amdgpu_device *adev = ring->adev;
int pipe_num, tmp, reg;
int pipe_percent = acquire ? SPI_WCL_PIPE_PERCENT_GFX__VALUE_MASK : 0x1;
pipe_num = ring->me * adev->gfx.mec.num_pipe_per_mec + ring->pipe;
/* first me only has 2 entries, GFX and HP3D */
if (ring->me > 0)
pipe_num -= 2;
reg = SOC15_REG_OFFSET(GC, 0, mmSPI_WCL_PIPE_PERCENT_GFX) + pipe_num;
tmp = RREG32(reg);
tmp = REG_SET_FIELD(tmp, SPI_WCL_PIPE_PERCENT_GFX, VALUE, pipe_percent);
WREG32(reg, tmp);
}
static void gfx_v9_0_pipe_reserve_resources(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
bool acquire)
{
int i, pipe;
bool reserve;
struct amdgpu_ring *iring;
mutex_lock(&adev->gfx.pipe_reserve_mutex);
pipe = amdgpu_gfx_queue_to_bit(adev, ring->me, ring->pipe, 0);
if (acquire)
set_bit(pipe, adev->gfx.pipe_reserve_bitmap);
else
clear_bit(pipe, adev->gfx.pipe_reserve_bitmap);
if (!bitmap_weight(adev->gfx.pipe_reserve_bitmap, AMDGPU_MAX_COMPUTE_QUEUES)) {
/* Clear all reservations - everyone reacquires all resources */
for (i = 0; i < adev->gfx.num_gfx_rings; ++i)
gfx_v9_0_ring_set_pipe_percent(&adev->gfx.gfx_ring[i],
true);
for (i = 0; i < adev->gfx.num_compute_rings; ++i)
gfx_v9_0_ring_set_pipe_percent(&adev->gfx.compute_ring[i],
true);
} else {
/* Lower all pipes without a current reservation */
for (i = 0; i < adev->gfx.num_gfx_rings; ++i) {
iring = &adev->gfx.gfx_ring[i];
pipe = amdgpu_gfx_queue_to_bit(adev,
iring->me,
iring->pipe,
0);
reserve = test_bit(pipe, adev->gfx.pipe_reserve_bitmap);
gfx_v9_0_ring_set_pipe_percent(iring, reserve);
}
for (i = 0; i < adev->gfx.num_compute_rings; ++i) {
iring = &adev->gfx.compute_ring[i];
pipe = amdgpu_gfx_queue_to_bit(adev,
iring->me,
iring->pipe,
0);
reserve = test_bit(pipe, adev->gfx.pipe_reserve_bitmap);
gfx_v9_0_ring_set_pipe_percent(iring, reserve);
}
}
mutex_unlock(&adev->gfx.pipe_reserve_mutex);
}
static void gfx_v9_0_hqd_set_priority(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
bool acquire)
{
uint32_t pipe_priority = acquire ? 0x2 : 0x0;
uint32_t queue_priority = acquire ? 0xf : 0x0;
mutex_lock(&adev->srbm_mutex);
soc15_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
WREG32_SOC15(GC, 0, mmCP_HQD_PIPE_PRIORITY, pipe_priority);
WREG32_SOC15(GC, 0, mmCP_HQD_QUEUE_PRIORITY, queue_priority);
soc15_grbm_select(adev, 0, 0, 0, 0);
mutex_unlock(&adev->srbm_mutex);
}
static void gfx_v9_0_ring_set_priority_compute(struct amdgpu_ring *ring,
enum drm_sched_priority priority)
{
struct amdgpu_device *adev = ring->adev;
bool acquire = priority == DRM_SCHED_PRIORITY_HIGH_HW;
if (ring->funcs->type != AMDGPU_RING_TYPE_COMPUTE)
return;
gfx_v9_0_hqd_set_priority(adev, ring, acquire);
gfx_v9_0_pipe_reserve_resources(adev, ring, acquire);
}
static void gfx_v9_0_ring_set_wptr_compute(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
@ -4261,6 +4360,7 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = {
.test_ib = gfx_v9_0_ring_test_ib,
.insert_nop = amdgpu_ring_insert_nop,
.pad_ib = amdgpu_ring_generic_pad_ib,
.set_priority = gfx_v9_0_ring_set_priority_compute,
};
static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_kiq = {