From: Alex Deucher Date: Mon, 1 Feb 2016 16:00:49 +0000 (-0500) Subject: drm/amdgpu: add check for atombios GPU virtualization table X-Git-Tag: v4.6-rc1~61^2~32^2~71 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=e74adf2039f98a30865ea7ef98689007c241c995;p=linux.git drm/amdgpu: add check for atombios GPU virtualization table This table is found on boards that support SR-IOV. This will be used to determine if the board supports SR-IOV and allow the driver to take specific action in certain cases. Reviewed-by: Monk Liu Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c index 9416e0f5c1db..84b0ce39ee14 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c @@ -1514,6 +1514,19 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev, return -EINVAL; } +bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev) +{ + int index = GetIndexIntoMasterTable(DATA, GPUVirtualizationInfo); + u8 frev, crev; + u16 data_offset, size; + + if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size, + &frev, &crev, &data_offset)) + return true; + + return false; +} + void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock) { uint32_t bios_6_scratch; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h index 0ebb959ea435..9e1442053fe4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h @@ -196,6 +196,8 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev, u8 module_index, struct atom_mc_reg_table *reg_table); +bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev); + void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock); void amdgpu_atombios_scratch_regs_init(struct amdgpu_device *adev); void amdgpu_atombios_scratch_regs_save(struct amdgpu_device *adev);