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drm/amdgpu: Add module param to control SI support

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If AMDGPU supports SI, add a module parameter to control SI
support. It's off by default in AMDGPU as long as SI suppost is
experimental, while it is on by default in radeon.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Michel Dänzer <michel.daenzer@amd.com>

[ Michel Dänzer: Squash in amdgpu_si_support initialization fix ]
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling 2017-06-05 18:53:55 +09:00 committed by Alex Deucher
parent 36ffce0ac0
commit 6dd1309683
3 changed files with 26 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -115,6 +115,9 @@ extern int amdgpu_param_buf_per_se;
extern int amdgpu_job_hang_limit;
extern int amdgpu_lbpw;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
extern int amdgpu_cik_support;
#endif

6
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -242,6 +242,12 @@ module_param_named(job_hang_limit, amdgpu_job_hang_limit, int ,0444);
MODULE_PARM_DESC(lbpw, "Load Balancing Per Watt (LBPW) support (1 = enable, 0 = disable, -1 = auto)");
module_param_named(lbpw, amdgpu_lbpw, int, 0444);
#ifdef CONFIG_DRM_AMDGPU_SI
int amdgpu_si_support = 0;
MODULE_PARM_DESC(si_support, "SI support (1 = enabled, 0 = disabled (default))");
module_param_named(si_support, amdgpu_si_support, int, 0444);
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
int amdgpu_cik_support = 1;
MODULE_PARM_DESC(cik_support, "CIK support (1 = enabled (default), 0 = disabled)");

17
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@ -87,6 +87,23 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
struct amdgpu_device *adev;
int r, acpi_status;
#ifdef CONFIG_DRM_AMDGPU_SI
if (!amdgpu_si_support) {
switch (flags & AMD_ASIC_MASK) {
case CHIP_TAHITI:
case CHIP_PITCAIRN:
case CHIP_VERDE:
case CHIP_OLAND:
case CHIP_HAINAN:
dev_info(dev->dev,
"SI support provided by radeon.\n");
dev_info(dev->dev,
"Use radeon.si_support=0 amdgpu.si_support=1 to override.\n"
);
return -ENODEV;
}
}
#endif
#ifdef CONFIG_DRM_AMDGPU_CIK
if (!amdgpu_cik_support) {
switch (flags & AMD_ASIC_MASK) {