diff options
Diffstat (limited to 'drivers/misc/habanalabs/common/habanalabs.h')
| -rw-r--r-- | drivers/misc/habanalabs/common/habanalabs.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h index 959e3616cc2f..9c2123ddc548 100644 --- a/drivers/misc/habanalabs/common/habanalabs.h +++ b/drivers/misc/habanalabs/common/habanalabs.h @@ -1793,8 +1793,6 @@ struct hl_cs_outcome_store { * 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 - * MMU hash or walking the PGT requires talking this lock. * @hw_block_list_lock: protects the HW block memory list. * @debugfs_list: node in debugfs list of contexts. * @hw_block_mem_list: list of HW block virtual mapped addresses. @@ -1831,7 +1829,6 @@ struct hl_ctx { 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; struct mutex hw_block_list_lock; struct list_head debugfs_list; struct list_head hw_block_mem_list; @@ -3079,6 +3076,12 @@ struct hl_reset_info { * @asid_mutex: protects asid_bitmap. * @send_cpu_message_lock: enforces only one message in Host <-> CPU-CP queue. * @debug_lock: protects critical section of setting debug mode for device + * @mmu_lock: protects the MMU page tables and invalidation h/w. Although the + * page tables are per context, the invalidation h/w is per MMU. + * Therefore, we can't allow multiple contexts (we only have two, + * user and kernel) to access the invalidation h/w at the same time. + * In addition, any change to the PGT, modifying the MMU hash or + * walking the PGT requires talking this lock. * @asic_prop: ASIC specific immutable properties. * @asic_funcs: ASIC specific functions. * @asic_specific: ASIC specific information to use only from ASIC files. @@ -3244,6 +3247,7 @@ struct hl_device { struct mutex asid_mutex; struct mutex send_cpu_message_lock; struct mutex debug_lock; + struct mutex mmu_lock; struct asic_fixed_properties asic_prop; const struct hl_asic_funcs *asic_funcs; void *asic_specific; |