diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_ringbuffer.h | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.h b/drivers/gpu/drm/msm/msm_ringbuffer.h index fe55d4a1aa16..d1e49f701c81 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.h +++ b/drivers/gpu/drm/msm/msm_ringbuffer.h @@ -7,6 +7,7 @@ #ifndef __MSM_RINGBUFFER_H__ #define __MSM_RINGBUFFER_H__ +#include "drm/gpu_scheduler.h" #include "msm_drv.h" #define rbmemptr(ring, member) \ @@ -29,9 +30,18 @@ struct msm_gpu_submit_stats { struct msm_rbmemptrs { volatile uint32_t rptr; volatile uint32_t fence; + /* Introduced on A7xx */ + volatile uint32_t bv_rptr; + volatile uint32_t bv_fence; volatile struct msm_gpu_submit_stats stats[MSM_GPU_SUBMIT_STATS_COUNT]; volatile u64 ttbr0; + volatile u32 context_idr; +}; + +struct msm_cp_state { + uint64_t ib1_base, ib2_base; + uint32_t ib1_rem, ib2_rem; }; struct msm_ringbuffer { @@ -41,23 +51,72 @@ struct msm_ringbuffer { uint32_t *start, *end, *cur, *next; /* + * The job scheduler for this ring. + */ + struct drm_gpu_scheduler sched; + + /* * List of in-flight submits on this ring. Protected by submit_lock. + * + * Currently just submits that are already written into the ring, not + * submits that are still in drm_gpu_scheduler's queues. At a later + * step we could probably move to letting drm_gpu_scheduler manage + * hangcheck detection and keep track of submit jobs that are in- + * flight. */ struct list_head submits; spinlock_t submit_lock; uint64_t iova; - uint32_t seqno; uint32_t hangcheck_fence; struct msm_rbmemptrs *memptrs; uint64_t memptrs_iova; struct msm_fence_context *fctx; + /** + * hangcheck_progress_retries: + * + * The number of extra hangcheck duration cycles that we have given + * due to it appearing that the GPU is making forward progress. + * + * For GPU generations which support progress detection (see. + * msm_gpu_funcs::progress()), if the GPU appears to be making progress + * (ie. the CP has advanced in the command stream, we'll allow up to + * DRM_MSM_HANGCHECK_PROGRESS_RETRIES expirations of the hangcheck timer + * before killing the job. But to detect progress we need two sample + * points, so the duration of the hangcheck timer is halved. In other + * words we'll let the submit run for up to: + * + * (DRM_MSM_HANGCHECK_DEFAULT_PERIOD / 2) * (DRM_MSM_HANGCHECK_PROGRESS_RETRIES + 1) + */ + int hangcheck_progress_retries; + + /** + * last_cp_state: The state of the CP at the last call to gpu->progress() + */ + struct msm_cp_state last_cp_state; + /* * preempt_lock protects preemption and serializes wptr updates against * preemption. Can be aquired from irq context. */ spinlock_t preempt_lock; + + /* + * Whether we skipped writing wptr and it needs to be updated in the + * future when the ring becomes current. + */ + bool restore_wptr; + + /** + * cur_ctx_seqno: + * + * The ctx->seqno value of the last context to submit to this ring + * Tracked by seqno rather than pointer value to avoid dangling + * pointers, and cases where a ctx can be freed and a new one created + * with the same address. + */ + int cur_ctx_seqno; }; struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, |