This adds a new gmc callback to get the size reserved by the pre-OS console and provides a helper function for use by gmc IP drivers.
Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 43 +++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 5 +++ 2 files changed, 48 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index 21d2c8543f85..fc9e18aaa76e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -27,6 +27,7 @@ #include <linux/io-64-nonatomic-lo-hi.h> #include "amdgpu.h" +#include "amdgpu_gmc.h" #include "amdgpu_ras.h" #include "amdgpu_xgmi.h" @@ -431,3 +432,45 @@ void amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type, WREG32(reg, tmp); } } + +void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev) +{ + unsigned size; + + /* + * TODO: + * Currently there is a bug where some memory client outside + * of the driver writes to first 8M of VRAM on S3 resume, + * this overrides GART which by default gets placed in first 8M and + * causes VM_FAULTS once GTT is accessed. + * Keep the stolen memory reservation until the while this is not solved. + */ + switch (adev->asic_type) { + case CHIP_VEGA10: + case CHIP_RAVEN: + case CHIP_ARCTURUS: + case CHIP_RENOIR: + adev->gmc.keep_stolen_vga_memory = true; + break; + default: + adev->gmc.keep_stolen_vga_memory = false; + break; + } + + if (!amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_DCE)) + size = 0; + else + size = amdgpu_gmc_get_vbios_fb_size(adev); + + /* set to 0 if the pre-OS buffer uses up most of vram */ + if ((adev->gmc.real_vram_size - size) < (8 * 1024 * 1024)) + size = 0; + + if (size > AMDGPU_VBIOS_VGA_ALLOCATION) { + adev->gmc.stolen_vga_size = AMDGPU_VBIOS_VGA_ALLOCATION; + adev->gmc.stolen_extended_size = size - adev->gmc.stolen_vga_size; + } else { + adev->gmc.stolen_vga_size = size; + adev->gmc.stolen_extended_size = 0; + } +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h index 8f4af955d72c..c2a85d0b1546 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h @@ -131,6 +131,8 @@ struct amdgpu_gmc_funcs { void (*get_vm_pte)(struct amdgpu_device *adev, struct amdgpu_bo_va_mapping *mapping, uint64_t *flags); + /* get the amount of memory used by the vbios for pre-OS console */ + unsigned int (*get_vbios_fb_size)(struct amdgpu_device *adev); }; struct amdgpu_xgmi { @@ -253,6 +255,7 @@ struct amdgpu_gmc { #define amdgpu_gmc_map_mtype(adev, flags) (adev)->gmc.gmc_funcs->map_mtype((adev),(flags)) #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags)) #define amdgpu_gmc_get_vm_pte(adev, mapping, flags) (adev)->gmc.gmc_funcs->get_vm_pte((adev), (mapping), (flags)) +#define amdgpu_gmc_get_vbios_fb_size(adev) (adev)->gmc.gmc_funcs->get_vbios_fb_size((adev)) /** * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR @@ -307,4 +310,6 @@ extern void amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type, bool enable); +void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev); + #endif -- 2.25.4 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
