diff options
| author | Yong Zhao <Yong.Zhao@amd.com> | 2019-08-30 18:09:10 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-16 09:54:25 -0500 |
| commit | 4e66d7d2156243bf6866fc83cda0c4b115627e6d (patch) | |
| tree | 44730ddd6dd56d6137eb8874b9e30dc20d1b9589 /drivers/gpu/drm/amd/amdgpu | |
| parent | bb42eda28407f62288398b4ef846ae64c98cdc73 (diff) | |
drm/amdgpu: Add a kernel parameter for specifying the asic type
As more and more new asics start to reuse the old device IDs before
launch, there is a need to quickly override the existing asic type
corresponding to the reused device ID through a kernel parameter. With
this, engineers no longer need to rely on local hack patches,
facilitating cooperation across teams.
Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 |
3 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index dd9e18f155f0..7723f4ed0130 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -168,6 +168,7 @@ extern int amdgpu_mcbp; extern int amdgpu_discovery; extern int amdgpu_mes; extern int amdgpu_noretry; +extern int amdgpu_force_asic_type; #ifdef CONFIG_DRM_AMDGPU_SI extern int amdgpu_si_support; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 3268291babf8..b09237b6531c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2585,7 +2585,12 @@ int amdgpu_device_init(struct amdgpu_device *adev, adev->ddev = ddev; adev->pdev = pdev; adev->flags = flags; - adev->asic_type = flags & AMD_ASIC_MASK; + + if (amdgpu_force_asic_type >= 0 && amdgpu_force_asic_type < CHIP_LAST) + adev->asic_type = amdgpu_force_asic_type; + else + adev->asic_type = flags & AMD_ASIC_MASK; + adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT; if (amdgpu_emu_mode == 1) adev->usec_timeout *= 2; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 62fe102ed39e..0f0d6fb6de32 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -146,6 +146,7 @@ int amdgpu_mcbp = 0; int amdgpu_discovery = -1; int amdgpu_mes = 0; int amdgpu_noretry = 1; +int amdgpu_force_asic_type = -1; struct amdgpu_mgpu_info mgpu_info = { .mutex = __MUTEX_INITIALIZER(mgpu_info.mutex), @@ -616,6 +617,16 @@ MODULE_PARM_DESC(noretry, "Disable retry faults (0 = retry enabled, 1 = retry disabled (default))"); module_param_named(noretry, amdgpu_noretry, int, 0644); +/** + * DOC: force_asic_type (int) + * A non negative value used to specify the asic type for all supported GPUs. + */ +MODULE_PARM_DESC(force_asic_type, + "A non negative value used to specify the asic type for all supported GPUs"); +module_param_named(force_asic_type, amdgpu_force_asic_type, int, 0444); + + + #ifdef CONFIG_HSA_AMD /** * DOC: sched_policy (int) |