diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-05-12 17:26:41 +0300 |
|---|---|---|
| committer | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-05-20 06:50:28 +0300 |
| commit | f89f8c6bafd0692d3afd21488d012ceb1baf6df6 (patch) | |
| tree | a6f34cf205887bef775c4aad48536e0760181a17 /drivers/gpu/drm/amd/amdgpu/psp_v3_1.c | |
| parent | 35bba8313b95a5cd074fc910a9c2670b4a1b105d (diff) | |
| download | linux-f89f8c6bafd0692d3afd21488d012ceb1baf6df6.tar.xz | |
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/psp_v3_1.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/psp_v3_1.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c index f2e725f72d2f..d0a6cccd0897 100644 --- a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c +++ b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c @@ -102,10 +102,8 @@ static int psp_v3_1_bootloader_load_sysdrv(struct psp_context *psp) if (ret) return ret; - memset(psp->fw_pri_buf, 0, PSP_1_MEG); - /* Copy PSP System Driver binary to memory */ - memcpy(psp->fw_pri_buf, psp->sys_start_addr, psp->sys_bin_size); + psp_copy_fw(psp, psp->sys_start_addr, psp->sys_bin_size); /* Provide the sys driver to bootloader */ WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36, @@ -143,10 +141,8 @@ static int psp_v3_1_bootloader_load_sos(struct psp_context *psp) if (ret) return ret; - memset(psp->fw_pri_buf, 0, PSP_1_MEG); - /* Copy Secure OS binary to PSP memory */ - memcpy(psp->fw_pri_buf, psp->sos_start_addr, psp->sos_bin_size); + psp_copy_fw(psp, psp->sos_start_addr, psp->sos_bin_size); /* Provide the PSP secure OS to bootloader */ WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_36, |