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drm/amdgpu/gmc11: implement get_vbios_fb_size()

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Implement get_vbios_fb_size() so we can properly reserve
the vbios splash screen to avoid potential artifacts on the
screen during the transition from the pre-OS console to the
OS console.

Acked-by: Sunil Khatri <sunil.khatri@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
This commit is contained in:
Alex Deucher 2023-05-11 10:40:03 -04:00
parent 9d2d1827af
commit 68518294d0
1 changed files with 20 additions and 1 deletions
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21
drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
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@ -31,6 +31,8 @@
#include "umc_v8_10.h"
#include "athub/athub_3_0_0_sh_mask.h"
#include "athub/athub_3_0_0_offset.h"
#include "dcn/dcn_3_2_0_offset.h"
#include "dcn/dcn_3_2_0_sh_mask.h"
#include "oss/osssys_6_0_0_offset.h"
#include "ivsrcid/vmc/irqsrcs_vmc_1_0.h"
#include "navi10_enum.h"
@ -546,7 +548,24 @@ static void gmc_v11_0_get_vm_pte(struct amdgpu_device *adev,
static unsigned gmc_v11_0_get_vbios_fb_size(struct amdgpu_device *adev)
{
return 0;
u32 d1vga_control = RREG32_SOC15(DCE, 0, regD1VGA_CONTROL);
unsigned size;
if (REG_GET_FIELD(d1vga_control, D1VGA_CONTROL, D1VGA_MODE_ENABLE)) {
size = AMDGPU_VBIOS_VGA_ALLOCATION;
} else {
u32 viewport;
u32 pitch;
viewport = RREG32_SOC15(DCE, 0, regHUBP0_DCSURF_PRI_VIEWPORT_DIMENSION);
pitch = RREG32_SOC15(DCE, 0, regHUBPREQ0_DCSURF_SURFACE_PITCH);
size = (REG_GET_FIELD(viewport,
HUBP0_DCSURF_PRI_VIEWPORT_DIMENSION, PRI_VIEWPORT_HEIGHT) *
REG_GET_FIELD(pitch, HUBPREQ0_DCSURF_SURFACE_PITCH, PITCH) *
4);
}
return size;
}
static const struct amdgpu_gmc_funcs gmc_v11_0_gmc_funcs = {