UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/amdgpu/gmc: add new helper to get the FB size used by pre-OS console 

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: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-07-28 15:04:52 -04:00
parent 0635019412
commit dd285c5df9
2 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
View File

@ -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;
}
}

5
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
View File

@ -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