Commit 5dc270d3 authored by Mario Limonciello's avatar Mario Limonciello Committed by Alex Deucher
Browse files

drm/amd: Add a module parameter for seamless boot 



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

Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2fa73a10

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

+17 −3
Original line number Diff line number Diff line
@@ -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;

	default:

		break;

	}

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

+8 −0
Original line number Diff line number Diff line
@@ -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: