drm/amdgpu: Basic emulation support
Add amdgpu_emu_mode module parameter to control the emulation mode
Avoid vbios operation on emulation since there is no vbios post duirng emulation,
use the common hw_init to simulate the post
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Acked-By: Alex Deucher <alexander.deucher@amd.com>
Acked-By: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 367f331..6c8ae59 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -131,6 +131,7 @@ int amdgpu_job_hang_limit = 0;
int amdgpu_lbpw = -1;
int amdgpu_compute_multipipe = -1;
int amdgpu_gpu_recovery = -1; /* auto */
+int amdgpu_emu_mode = 0;
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
@@ -286,6 +287,9 @@ module_param_named(compute_multipipe, amdgpu_compute_multipipe, int, 0444);
MODULE_PARM_DESC(gpu_recovery, "Enable GPU recovery mechanism, (1 = enable, 0 = disable, -1 = auto");
module_param_named(gpu_recovery, amdgpu_gpu_recovery, int, 0444);
+MODULE_PARM_DESC(emu_mode, "Emulation mode, (1 = enable, 0 = disable");
+module_param_named(emu_mode, amdgpu_emu_mode, int, 0444);
+
#ifdef CONFIG_DRM_AMDGPU_SI
#if defined(CONFIG_DRM_RADEON) || defined(CONFIG_DRM_RADEON_MODULE)