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| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2024-01-07 18:36:17 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-16 02:35:35 +0300 |
| commit | ad390542ec48aaa2e582b25d5d86c699e372eb26 (patch) | |
| tree | 625724aaf7aa133a18773b564f9097b68bb413a3 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | ea0f6dfeecab386cc84dd3da1a023c5e362d027c (diff) | |
| download | linux-ad390542ec48aaa2e582b25d5d86c699e372eb26.tar.xz | |
drm/amdgpu: Init pcie_index/data address as fallback (v2)
To allow using this helper for indirect access when
nbio funcs is not available. For instance, in ip
discovery phase.
v2: define macro for pcie_index/data/index_hi fallback.
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 19ca0519c034..cb9e6fa80b16 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -96,6 +96,9 @@ MODULE_FIRMWARE("amdgpu/navi12_gpu_info.bin"); #define AMDGPU_RESUME_MS 2000 #define AMDGPU_MAX_RETRY_LIMIT 2 #define AMDGPU_RETRY_SRIOV_RESET(r) ((r) == -EBUSY || (r) == -ETIMEDOUT || (r) == -EINVAL) +#define AMDGPU_PCIE_INDEX_FALLBACK (0x38 >> 2) +#define AMDGPU_PCIE_INDEX_HI_FALLBACK (0x44 >> 2) +#define AMDGPU_PCIE_DATA_FALLBACK (0x3C >> 2) static const struct drm_driver amdgpu_kms_driver; @@ -781,12 +784,22 @@ u32 amdgpu_device_indirect_rreg_ext(struct amdgpu_device *adev, void __iomem *pcie_index_hi_offset; void __iomem *pcie_data_offset; - pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); - pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); - if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset)) - pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev); - else + if (unlikely(!adev->nbio.funcs)) { + pcie_index = AMDGPU_PCIE_INDEX_FALLBACK; + pcie_data = AMDGPU_PCIE_DATA_FALLBACK; + } else { + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + } + + if (reg_addr >> 32) { + if (unlikely(!adev->nbio.funcs)) + pcie_index_hi = AMDGPU_PCIE_INDEX_HI_FALLBACK; + else + pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev); + } else { pcie_index_hi = 0; + } spin_lock_irqsave(&adev->pcie_idx_lock, flags); pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; |