diff options
Diffstat (limited to 'drivers/dma/idxd/idxd.h')
| -rw-r--r-- | drivers/dma/idxd/idxd.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 2a71273f1822..c74681f02b18 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -262,7 +262,15 @@ struct idxd_driver_data { }; struct idxd_evl { + /* Lock to protect event log access. */ + spinlock_t lock; + void *log; + dma_addr_t dma; + /* Total size of event log = number of entries * entry size. */ + unsigned int log_size; + /* The number of entries in the event log. */ u16 size; + u16 head; }; struct idxd_device { @@ -324,6 +332,17 @@ struct idxd_device { struct idxd_evl *evl; }; +static inline unsigned int evl_ent_size(struct idxd_device *idxd) +{ + return idxd->hw.gen_cap.evl_support ? + (32 * (1 << idxd->hw.gen_cap.evl_support)) : 0; +} + +static inline unsigned int evl_size(struct idxd_device *idxd) +{ + return idxd->evl->size * evl_ent_size(idxd); +} + /* IDXD software descriptor */ struct idxd_desc { union { |