kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h, branch v6.1.124

drm/amdgpu: Add lock around VF RLCG interface

2024-08-14T11:52:48+00:00

[ Upstream commit e864180ee49b4d30e640fd1e1d852b86411420c9 ] flush_gpu_tlb may be called from another thread while device_gpu_recover is running. Both of these threads access registers through the VF RLCG interface during VF Full Access. Add a lock around this interface to prevent race conditions between these threads. Signed-off-by: Victor Skvortsov Reviewed-by: Zhigang Luo Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Fix type of second parameter in trans_msg() callback

2022-12-31T12:33:01+00:00

[ Upstream commit f0d0f1087333714ee683cc134a95afe331d7ddd9 ] With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. A proposed warning in clang aims to catch these at compile time, which reveals: drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c:412:15: error: incompatible function pointer types initializing 'void (*)(struct amdgpu_device *, u32, u32, u32, u32)' (aka 'void (*)(struct amdgpu_device *, unsigned int, unsigned int, unsigned int, unsigned int)') with an expression of type 'void (struct amdgpu_device *, enum idh_request, u32, u32, u32)' (aka 'void (struct amdgpu_device *, enum idh_request, unsigned int, unsigned int, unsigned int)') [-Werror,-Wincompatible-function-pointer-types-strict] .trans_msg = xgpu_ai_mailbox_trans_msg, ^~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c:435:15: error: incompatible function pointer types initializing 'void (*)(struct amdgpu_device *, u32, u32, u32, u32)' (aka 'void (*)(struct amdgpu_device *, unsigned int, unsigned int, unsigned int, unsigned int)') with an expression of type 'void (struct amdgpu_device *, enum idh_request, u32, u32, u32)' (aka 'void (struct amdgpu_device *, enum idh_request, unsigned int, unsigned int, unsigned int)') [-Werror,-Wincompatible-function-pointer-types-strict] .trans_msg = xgpu_nv_mailbox_trans_msg, ^~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. The type of the second parameter in the prototype should be 'enum idh_request' instead of 'u32'. Update it to clear up the warnings. Link: https://github.com/ClangBuiltLinux/linux/issues/1750 Reported-by: Sami Tolvanen Reviewed-by: Kees Cook Signed-off-by: Nathan Chancellor Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: set vm_update_mode=0 as default for Sienna Cichlid in SRIOV case

2022-10-19T02:07:58+00:00

For asic with VF MMIO access protection avoid using CPU for VM table updates. CPU pagetable updates have issues with HDP flush as VF MMIO access protection blocks write to mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL register during sriov runtime. v3: introduce virtualization capability flag AMDGPU_VF_MMIO_ACCESS_PROTECT which indicates that VF MMIO write access is not allowed in sriov runtime Signed-off-by: Danijel Slivka Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: Support PSP 13.0.10 on SR-IOV

2022-09-01T19:11:26+00:00

Add support for PSP 13.0.10 for SR-IOV VF Acked-by: Christian König Signed-off-by: Horace Chen Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: refine virtualization psp fw skip check

2022-09-01T19:11:12+00:00

SR-IOV may need to load different firmwares for different ASIC inside VF. So create a new function in amdgpu_virt to check whether FW load needs to be skipped. Acked-by: Christian König Signed-off-by: Horace Chen Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: Fix wait for RLCG command completion

2022-02-16T22:30:02+00:00

if (!(tmp & flag)) condition will always evaluate to true when the flag is 0x0 (AMDGPU_RLCG_GC_WRITE). Instead check that address bits are cleared to determine whether the command is complete. Signed-off-by: Victor Skvortsov Tested-by: Bokun Zhang Reviewed by: Shaoyun.liu Signed-off-by: Alex Deucher

drm/amdgpu: add determine passthrough under arm64

2022-01-27T20:47:34+00:00

add determine for passthrough mode under arm64 by reading CurrentEL register v2: squash in warning fix (Alex) Signed-off-by: Victor Zhao Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: retire rlc callbacks sriov_rreg/wreg

2022-01-25T23:00:33+00:00

Not needed anymore. Signed-off-by: Hawking Zhang Reviewed-by: Zhou, Peng Ju Acked-by: Christian König Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: add helper for rlcg indirect reg access

2022-01-25T23:00:33+00:00

The helper will be used to access registers from sriov guest in full access time Signed-off-by: Hawking Zhang Reviewed-by: Zhou, Peng Ju Acked-by: Christian König Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: add helper to query rlcg reg access flag

2022-01-25T23:00:33+00:00

Query rlc indirect register access approach specified by sriov host driver per ip blocks Signed-off-by: Hawking Zhang Reviewed-by: Zhou, Peng Ju Acked-by: Christian König Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher