From 08473888e09b0136ceb4d65784b02b537d977a2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolai=20H=C3=A4hnle?= <nicolai.haehnle@amd.com>
Date: Tue, 16 Jul 2019 13:11:22 -0500
Subject: [PATCH] drm/amdgpu/gfx10: set SH_MEM_CONFIG.INITIAL_INST_PREFETCH
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
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 435678933d861..1675d5837c3c8 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -109,6 +109,13 @@ static const struct soc15_reg_golden golden_settings_gc_10_0_nv10[] =
/* 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);
@@ -1415,7 +1422,6 @@ static u32 gfx_v10_0_init_pa_sc_tile_steering_override(struct amdgpu_device *ade
static void gfx_v10_0_init_compute_vmid(struct amdgpu_device *adev)
{
int i;
- uint32_t sh_mem_config;
uint32_t sh_mem_bases;
/*
@@ -1426,15 +1432,11 @@ static void gfx_v10_0_init_compute_vmid(struct amdgpu_device *adev)
*/
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);
@@ -1527,17 +1529,8 @@ static void gfx_v10_0_constants_init(struct amdgpu_device *adev)
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,
--
GitLab