diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-05-12 10:26:41 -0400 |
|---|---|---|
| committer | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-05-19 23:50:28 -0400 |
| commit | f89f8c6bafd0692d3afd21488d012ceb1baf6df6 (patch) | |
| tree | a6f34cf205887bef775c4aad48536e0760181a17 /drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | |
| parent | 35bba8313b95a5cd074fc910a9c2670b4a1b105d (diff) | |
drm/amdgpu: Guard against write accesses after device removal
This should prevent writing to memory or IO ranges possibly
already allocated for other uses after our device is removed.
v5:
Protect more places wher memcopy_to/form_io takes place
Protect IB submissions
v6: Switch to !drm_dev_enter instead of scoping entire code
with brackets.
v7:
Drop guard of HW ring commands emission protection since they
are in GART and not in MMIO.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-10-andrey.grodzovsky@amd.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c index cf165ab5dd26..ec28ba85c435 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c @@ -34,6 +34,8 @@ #include "vcn/vcn_3_0_0_sh_mask.h" #include "ivsrcid/vcn/irqsrcs_vcn_2_0.h" +#include <drm/drm_drv.h> + #define mmUVD_CONTEXT_ID_INTERNAL_OFFSET 0x27 #define mmUVD_GPCOM_VCPU_CMD_INTERNAL_OFFSET 0x0f #define mmUVD_GPCOM_VCPU_DATA0_INTERNAL_OFFSET 0x10 @@ -268,16 +270,20 @@ static int vcn_v3_0_sw_init(void *handle) static int vcn_v3_0_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; - int i, r; + int i, r, idx; - for (i = 0; i < adev->vcn.num_vcn_inst; i++) { - volatile struct amdgpu_fw_shared *fw_shared; + if (drm_dev_enter(&adev->ddev, &idx)) { + for (i = 0; i < adev->vcn.num_vcn_inst; i++) { + volatile struct amdgpu_fw_shared *fw_shared; - if (adev->vcn.harvest_config & (1 << i)) - continue; - fw_shared = adev->vcn.inst[i].fw_shared_cpu_addr; - fw_shared->present_flag_0 = 0; - fw_shared->sw_ring.is_enabled = false; + if (adev->vcn.harvest_config & (1 << i)) + continue; + fw_shared = adev->vcn.inst[i].fw_shared_cpu_addr; + fw_shared->present_flag_0 = 0; + fw_shared->sw_ring.is_enabled = false; + } + + drm_dev_exit(idx); } if (amdgpu_sriov_vf(adev)) |