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drm/amd: Add a module parameter for seamless boot

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The module parameter can be used to test more easily enabling seamless
boot support on additional ASICs.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello 2023-09-05 14:25:59 -05:00 committed by Alex Deucher
parent 2fa73a101c
commit 5dc270d366
3 changed files with 26 additions and 3 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -245,6 +245,7 @@ extern int amdgpu_num_kcq;
extern int amdgpu_vcnfw_log;
extern int amdgpu_sg_display;
extern int amdgpu_umsch_mm;
extern int amdgpu_seamless;
extern int amdgpu_user_partt_mode;

20
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View file

@ -1367,11 +1367,25 @@ bool amdgpu_device_need_post(struct amdgpu_device *adev)
*/
bool amdgpu_device_seamless_boot_supported(struct amdgpu_device *adev)
{
switch (amdgpu_seamless) {
case -1:
break;
case 1:
return true;
case 0:
return false;
default:
DRM_ERROR("Invalid value for amdgpu.seamless: %d\n",
amdgpu_seamless);
return false;
}
if (adev->mman.keep_stolen_vga_memory)
return false;
switch (adev->ip_versions[DCE_HWIP][0]) {
case IP_VERSION(3, 0, 1):
if (!adev->mman.keep_stolen_vga_memory)
return true;
break;
return true;
default:
break;
}

8
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View file

@ -203,6 +203,7 @@ int amdgpu_vcnfw_log;
int amdgpu_sg_display = -1; /* auto */
int amdgpu_user_partt_mode = AMDGPU_AUTO_COMPUTE_PARTITION_MODE;
int amdgpu_umsch_mm;
int amdgpu_seamless = -1; /* auto */
uint amdgpu_debug_mask;
static void amdgpu_drv_delayed_reset_work_handler(struct work_struct *work);
@ -938,6 +939,13 @@ module_param_named(user_partt_mode, amdgpu_user_partt_mode, uint, 0444);
module_param(enforce_isolation, bool, 0444);
MODULE_PARM_DESC(enforce_isolation, "enforce process isolation between graphics and compute . enforce_isolation = on");
/**
* DOC: seamless (int)
* Seamless boot will keep the image on the screen during the boot process.
*/
MODULE_PARM_DESC(seamless, "Seamless boot (-1 = auto (default), 0 = disable, 1 = enable)");
module_param_named(seamless, amdgpu_seamless, int, 0444);
/**
* DOC: debug_mask (uint)
* Debug options for amdgpu, work as a binary mask with the following options: