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| author | Marek Olšák <marek.olsak@amd.com> | 2015-04-29 19:40:33 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-05-26 10:31:19 -0400 |
| commit | 72b9076b2887add930d3b102760f09d02ffbfbe7 (patch) | |
| tree | 8eba67d708f9d5c79661d65fc72122fe5f2ac241 | |
| parent | c6e7e4bb7ff988e7f915526a80ea866d84aac720 (diff) | |
| download | linux-stable-72b9076b2887add930d3b102760f09d02ffbfbe7.tar.gz linux-stable-72b9076b2887add930d3b102760f09d02ffbfbe7.tar.bz2 linux-stable-72b9076b2887add930d3b102760f09d02ffbfbe7.zip | |
drm/radeon: add a GPU reset counter queryable by userspace
Userspace will be able to tell whether a GPU reset occured by comparing
an old referece value of the counter with a new value.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_drv.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_kms.c | 3 | ||||
| -rw-r--r-- | include/uapi/drm/radeon_drm.h | 1 |
5 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 46eb0fa75a61..352870cbb8b8 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -2435,6 +2435,7 @@ struct radeon_device { atomic64_t vram_usage; atomic64_t gtt_usage; atomic64_t num_bytes_moved; + atomic_t gpu_reset_counter; /* ACPI interface */ struct radeon_atif atif; struct radeon_atcs atcs; diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index b7ca4c514621..13e207e0dff0 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1725,6 +1725,8 @@ int radeon_gpu_reset(struct radeon_device *rdev) return 0; } + atomic_inc(&rdev->gpu_reset_counter); + radeon_save_bios_scratch_regs(rdev); /* block TTM */ resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev); diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 7d620d4b3f31..5751446677d3 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -90,9 +90,10 @@ * CS to GPU on >= r600 * 2.41.0 - evergreen/cayman: Add SET_BASE/DRAW_INDIRECT command parsing support * 2.42.0 - Add VCE/VUI (Video Usability Information) support + * 2.43.0 - RADEON_INFO_GPU_RESET_COUNTER */ #define KMS_DRIVER_MAJOR 2 -#define KMS_DRIVER_MINOR 42 +#define KMS_DRIVER_MINOR 43 #define KMS_DRIVER_PATCHLEVEL 0 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags); int radeon_driver_unload_kms(struct drm_device *dev); diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index 7b2a7335cc5d..9632e886ddc3 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -576,6 +576,9 @@ static int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file if (radeon_get_allowed_info_register(rdev, *value, value)) return -EINVAL; break; + case RADEON_INFO_GPU_RESET_COUNTER: + *value = atomic_read(&rdev->gpu_reset_counter); + break; default: DRM_DEBUG_KMS("Invalid request %d\n", info->request); return -EINVAL; diff --git a/include/uapi/drm/radeon_drm.h b/include/uapi/drm/radeon_drm.h index 871e73f99a4d..573cb86a3d6e 100644 --- a/include/uapi/drm/radeon_drm.h +++ b/include/uapi/drm/radeon_drm.h @@ -1038,6 +1038,7 @@ struct drm_radeon_cs { #define RADEON_INFO_CURRENT_GPU_SCLK 0x22 #define RADEON_INFO_CURRENT_GPU_MCLK 0x23 #define RADEON_INFO_READ_REG 0x24 +#define RADEON_INFO_GPU_RESET_COUNTER 0x25 struct drm_radeon_info { uint32_t request; |