On Tue, Jan 2, 2018 at 3:49 PM, Andres Rodriguez <andresx7 at gmail.com> wrote:
> 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.
>
> Signed-off-by: Andres Rodriguez <andresx7 at gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Do you want to send a patch to bump the driver version so you know
when this is available?
Alex
> ---
> drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 100 ++++++++++++++++++++++++++++++++++
> 1 file changed, 100 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> index 9f7be230734c..80af928b153e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> @@ -3734,6 +3734,105 @@ 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;
> @@ -4260,6 +4359,7 @@ 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 = {
> --
> 2.14.1
>
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> amd-gfx at lists.freedesktop.org
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