From 8093383ae7f5f196e3d4f3cc47abb557c81b9e6f Mon Sep 17 00:00:00 2001 From: Victor Lu Date: Mon, 12 Feb 2024 17:33:45 -0500 Subject: drm/amdgpu: Improve error checking in amdgpu_virt_rlcg_reg_rw (v2) The current error detection only looks for a timeout. This should be changed to also check scratch_reg1 for any errors returned from RLCG. v2: remove new error value Signed-off-by: Victor Lu Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 5 +++-- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index 6ff7d3fb2008..7a4eae36778a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -979,7 +979,7 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f * SCRATCH_REG0 = read/write value * SCRATCH_REG1[30:28] = command * SCRATCH_REG1[19:0] = address in dword - * SCRATCH_REG1[26:24] = Error reporting + * SCRATCH_REG1[27:24] = Error reporting */ writel(v, scratch_reg0); writel((offset | flag), scratch_reg1); @@ -993,7 +993,8 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f udelay(10); } - if (i >= timeout) { + tmp = readl(scratch_reg1); + if (i >= timeout || (tmp & AMDGPU_RLCG_SCRATCH1_ERROR_MASK) != 0) { if (amdgpu_sriov_rlcg_error_report_enabled(adev)) { if (tmp & AMDGPU_RLCG_VFGATE_DISABLED) { dev_err(adev->dev, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h index fa7be5f277b9..3f59b7b5523f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h @@ -45,6 +45,7 @@ #define AMDGPU_RLCG_REG_NOT_IN_RANGE 0x1000000 #define AMDGPU_RLCG_SCRATCH1_ADDRESS_MASK 0xFFFFF +#define AMDGPU_RLCG_SCRATCH1_ERROR_MASK 0xF000000 /* all asic after AI use this offset */ #define mmRCC_IOV_FUNC_IDENTIFIER 0xDE5 -- cgit v1.2.3