[PATCH] drm/amdgpu/gfx10: set SH_MEM_CONFIG.INITIAL_INST_PREFETCH
Marek Olšák
maraeo at gmail.com
Fri Jul 12 17:59:36 UTC 2019
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Marek
On Fri, Jul 12, 2019 at 9:47 AM Haehnle, Nicolai <Nicolai.Haehnle at amd.com>
wrote:
> Prefetch mode 0 is not supported and can lead to hangs with certain very
> specific code patterns. Set a sound prefetch mode for all VMIDs rather
> than forcing all shaders to set the prefetch mode at the beginning.
>
> Reduce code duplication a bit while we're at it. Note that the 64-bit
> address mode enum and the retry all enum are both 0, so the only
> functional change is in the INITIAL_INST_PREFETCH field.
>
> Signed-off-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
> --
> I haven't been able to properly test this yet, but it is the right thing
> to be doing in principle.
> ---
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 27 ++++++++++----------------
> 1 file changed, 10 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> index 0d94c812df1b..b8498c359191 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> @@ -157,20 +157,27 @@ static const struct soc15_reg_golden
> golden_settings_gc_10_1_1[] =
> SOC15_REG_GOLDEN_VALUE(GC, 0, mmTA_CNTL_AUX, 0xfff7ffff,
> 0x01030000),
> SOC15_REG_GOLDEN_VALUE(GC, 0, mmTCP_CNTL, 0x60000010, 0x479c0010),
> SOC15_REG_GOLDEN_VALUE(GC, 0, mmUTCL1_CTRL, 0x00800000,
> 0x00800000),
> };
>
> static const struct soc15_reg_golden golden_settings_gc_10_1_nv14[] =
> {
> /* Pending on emulation bring up */
> };
>
> +#define DEFAULT_SH_MEM_CONFIG \
> + ((SH_MEM_ADDRESS_MODE_64 << SH_MEM_CONFIG__ADDRESS_MODE__SHIFT) | \
> + (SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
> SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT) | \
> + (SH_MEM_RETRY_MODE_ALL << SH_MEM_CONFIG__RETRY_MODE__SHIFT) | \
> + (3 << SH_MEM_CONFIG__INITIAL_INST_PREFETCH__SHIFT))
> +
> +
> static void gfx_v10_0_set_ring_funcs(struct amdgpu_device *adev);
> static void gfx_v10_0_set_irq_funcs(struct amdgpu_device *adev);
> static void gfx_v10_0_set_gds_init(struct amdgpu_device *adev);
> static void gfx_v10_0_set_rlc_funcs(struct amdgpu_device *adev);
> static int gfx_v10_0_get_cu_info(struct amdgpu_device *adev,
> struct amdgpu_cu_info *cu_info);
> static uint64_t gfx_v10_0_get_gpu_clock_counter(struct amdgpu_device
> *adev);
> static void gfx_v10_0_select_se_sh(struct amdgpu_device *adev, u32 se_num,
> u32 sh_num, u32 instance);
> static u32 gfx_v10_0_get_wgp_active_bitmap_per_sh(struct amdgpu_device
> *adev);
> @@ -1476,40 +1483,35 @@ static u32
> gfx_v10_0_init_pa_sc_tile_steering_override(struct amdgpu_device *ade
> return pa_sc_tile_steering_override;
> }
>
> #define DEFAULT_SH_MEM_BASES (0x6000)
> #define FIRST_COMPUTE_VMID (8)
> #define LAST_COMPUTE_VMID (16)
>
> static void gfx_v10_0_init_compute_vmid(struct amdgpu_device *adev)
> {
> int i;
> - uint32_t sh_mem_config;
> uint32_t sh_mem_bases;
>
> /*
> * Configure apertures:
> * LDS: 0x60000000'00000000 - 0x60000001'00000000 (4GB)
> * Scratch: 0x60000001'00000000 - 0x60000002'00000000 (4GB)
> * GPUVM: 0x60010000'00000000 - 0x60020000'00000000 (1TB)
> */
> sh_mem_bases = DEFAULT_SH_MEM_BASES | (DEFAULT_SH_MEM_BASES << 16);
>
> - sh_mem_config = SH_MEM_ADDRESS_MODE_64 |
> - SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
> - SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT;
> -
> mutex_lock(&adev->srbm_mutex);
> for (i = FIRST_COMPUTE_VMID; i < LAST_COMPUTE_VMID; i++) {
> nv_grbm_select(adev, 0, 0, 0, i);
> /* CP and shaders */
> - WREG32_SOC15(GC, 0, mmSH_MEM_CONFIG, sh_mem_config);
> + WREG32_SOC15(GC, 0, mmSH_MEM_CONFIG,
> DEFAULT_SH_MEM_CONFIG);
> WREG32_SOC15(GC, 0, mmSH_MEM_BASES, sh_mem_bases);
> }
> nv_grbm_select(adev, 0, 0, 0, 0);
> mutex_unlock(&adev->srbm_mutex);
> }
>
> static void gfx_v10_0_tcp_harvest(struct amdgpu_device *adev)
> {
> int i, j, k;
> int max_wgp_per_sh = adev->gfx.config.max_cu_per_sh >> 1;
> @@ -1590,31 +1592,22 @@ static void gfx_v10_0_constants_init(struct
> amdgpu_device *adev)
> gfx_v10_0_get_cu_info(adev, &adev->gfx.cu_info);
> adev->gfx.config.pa_sc_tile_steering_override =
> gfx_v10_0_init_pa_sc_tile_steering_override(adev);
>
> /* XXX SH_MEM regs */
> /* where to put LDS, scratch, GPUVM in FSA64 space */
> mutex_lock(&adev->srbm_mutex);
> for (i = 0; i < adev->vm_manager.id_mgr[AMDGPU_GFXHUB].num_ids;
> i++) {
> nv_grbm_select(adev, 0, 0, 0, i);
> /* CP and shaders */
> - if (i == 0) {
> - tmp = REG_SET_FIELD(0, SH_MEM_CONFIG,
> ALIGNMENT_MODE,
> -
> SH_MEM_ALIGNMENT_MODE_UNALIGNED);
> - tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG,
> RETRY_MODE, 0);
> - WREG32_SOC15(GC, 0, mmSH_MEM_CONFIG, tmp);
> - WREG32_SOC15(GC, 0, mmSH_MEM_BASES, 0);
> - } else {
> - tmp = REG_SET_FIELD(0, SH_MEM_CONFIG,
> ALIGNMENT_MODE,
> -
> SH_MEM_ALIGNMENT_MODE_UNALIGNED);
> - tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG,
> RETRY_MODE, 0);
> - WREG32_SOC15(GC, 0, mmSH_MEM_CONFIG, tmp);
> + WREG32_SOC15(GC, 0, mmSH_MEM_CONFIG,
> DEFAULT_SH_MEM_CONFIG);
> + if (i != 0) {
> tmp = REG_SET_FIELD(0, SH_MEM_BASES, PRIVATE_BASE,
> (adev->gmc.private_aperture_start >> 48));
> tmp = REG_SET_FIELD(tmp, SH_MEM_BASES, SHARED_BASE,
> (adev->gmc.shared_aperture_start >> 48));
> WREG32_SOC15(GC, 0, mmSH_MEM_BASES, tmp);
> }
> }
> nv_grbm_select(adev, 0, 0, 0, 0);
>
> mutex_unlock(&adev->srbm_mutex);
> --
> 2.20.1
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20190712/7b435b96/attachment.html>
More information about the amd-gfx
mailing list