[PATCH 1/2] drm/amdgpu: add amdgpu.ttm_dma_allocation parameter

[Chunming Zhou]

it will be used to set ttm dma allocation path.

Change-Id: I9fa936db751811779cea66598bba0b8cf4cfd869
Signed-off-by: Chunming Zhou <david1.zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h     | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 353186f3e58c..443bedb288e6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -128,6 +128,7 @@ extern int amdgpu_job_hang_limit;
 extern int amdgpu_lbpw;
 extern int amdgpu_compute_multipipe;
 extern int amdgpu_gpu_recovery;
+extern int amdgpu_ttm_dma_allocation;
 
 #ifdef CONFIG_DRM_AMDGPU_SI
 extern int amdgpu_si_support;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index d1a695864793..556135020c4d 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_ttm_dma_allocation = 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(ttm_dma_allocation, "Enable TTM dma allocation, (1 = enable, 0 = disable");
+module_param_named(amdgpu_ttm_dma_allocation, amdgpu_ttm_dma_allocation, int, 0444);
+
 #ifdef CONFIG_DRM_AMDGPU_SI
 
 #if defined(CONFIG_DRM_RADEON) || defined(CONFIG_DRM_RADEON_MODULE)
-- 
2.14.1