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drm/amdgpu: add mcbp driver parameter

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Add mcbp driver parameter, so that mcbp feature can be
enabled/disabled by driver parameter.

Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jack Xiao 2019-01-10 15:43:33 +08:00 committed by Alex Deucher
parent 692441f265
commit b239c01727
3 changed files with 9 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -159,6 +159,7 @@ extern struct amdgpu_mgpu_info mgpu_info;
extern int amdgpu_ras_enable;
extern uint amdgpu_ras_mask;
extern int amdgpu_async_gfx_ring;
extern int amdgpu_mcbp;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;

3
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -2575,6 +2575,9 @@ int amdgpu_device_init(struct amdgpu_device *adev,
amdgpu_device_get_pcie_info(adev);
if (amdgpu_mcbp)
DRM_INFO("MCBP is enabled\n");
/* early init functions */
r = amdgpu_device_ip_early_init(adev);
if (r)

5
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -137,6 +137,7 @@ uint amdgpu_smu_memory_pool_size = 0;
/* FBC (bit 0) disabled by default*/
uint amdgpu_dc_feature_mask = 0;
int amdgpu_async_gfx_ring = 1;
int amdgpu_mcbp = 0;
struct amdgpu_mgpu_info mgpu_info = {
.mutex = __MUTEX_INITIALIZER(mgpu_info.mutex),
@ -574,6 +575,10 @@ MODULE_PARM_DESC(async_gfx_ring,
"Asynchronous GFX rings that could be configured with either different priorities (HP3D ring and LP3D ring), or equal priorities (0 = disabled, 1 = enabled (default))");
module_param_named(async_gfx_ring, amdgpu_async_gfx_ring, int, 0444);
MODULE_PARM_DESC(mcbp,
"Enable Mid-command buffer preemption (0 = disabled (default), 1 = enabled)");
module_param_named(mcbp, amdgpu_mcbp, int, 0444);
#ifdef CONFIG_HSA_AMD
/**
* DOC: sched_policy (int)