diff options
Diffstat (limited to 'drivers/misc/habanalabs/common/habanalabs.h')
| -rw-r--r-- | drivers/misc/habanalabs/common/habanalabs.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h index 7a46f36518fe..3023ecfc19c9 100644 --- a/drivers/misc/habanalabs/common/habanalabs.h +++ b/drivers/misc/habanalabs/common/habanalabs.h @@ -1535,6 +1535,40 @@ struct hl_dmabuf_priv { uint64_t device_address; }; +#define HL_CS_OUTCOME_HISTORY_LEN 256 + +/** + * struct hl_cs_outcome - represents a single completed CS outcome + * @list_link: link to either container's used list or free list + * @map_link: list to the container hash map + * @ts: completion ts + * @seq: the original cs sequence + * @error: error code cs completed with, if any + */ +struct hl_cs_outcome { + struct list_head list_link; + struct hlist_node map_link; + ktime_t ts; + u64 seq; + int error; +}; + +/** + * struct hl_cs_outcome_store - represents a limited store of completed CS outcomes + * @outcome_map: index of completed CS searcheable by sequence number + * @used_list: list of outcome objects currently in use + * @free_list: list of outcome objects currently not in use + * @nodes_pool: a static pool of preallocated outcome objects + * @db_lock: any operation on the store must take this lock + */ +struct hl_cs_outcome_store { + DECLARE_HASHTABLE(outcome_map, 8); + struct list_head used_list; + struct list_head free_list; + struct hl_cs_outcome nodes_pool[HL_CS_OUTCOME_HISTORY_LEN]; + spinlock_t db_lock; +}; + /** * struct hl_ctx - user/kernel context. * @mem_hash: holds mapping from virtual address to virtual memory area @@ -1545,6 +1579,8 @@ struct hl_dmabuf_priv { * @refcount: reference counter for the context. Context is released only when * this hits 0l. It is incremented on CS and CS_WAIT. * @cs_pending: array of hl fence objects representing pending CS. + * @outcome_store: storage data structure used to remember ouitcomes of completed + * command submissions for a long time after CS id wraparound. * @va_range: holds available virtual addresses for host and dram mappings. * @mem_hash_lock: protects the mem_hash. * @mmu_lock: protects the MMU page tables. Any change to the PGT, modifying the @@ -1580,6 +1616,7 @@ struct hl_ctx { struct hl_device *hdev; struct kref refcount; struct hl_fence **cs_pending; + struct hl_cs_outcome_store outcome_store; struct hl_va_range *va_range[HL_VA_RANGE_TYPE_MAX]; struct mutex mem_hash_lock; struct mutex mmu_lock; |