diff options
Diffstat (limited to 'drivers/crypto/ccp/ccp-dev.h')
| -rw-r--r-- | drivers/crypto/ccp/ccp-dev.h | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h index 7745d0be491d..bd41ffceff82 100644 --- a/drivers/crypto/ccp/ccp-dev.h +++ b/drivers/crypto/ccp/ccp-dev.h @@ -22,6 +22,9 @@ #include <linux/dmapool.h> #include <linux/hw_random.h> #include <linux/bitops.h> +#include <linux/interrupt.h> +#include <linux/irqreturn.h> +#include <linux/dmaengine.h> #define MAX_CCP_NAME_LEN 16 #define MAX_DMAPOOL_NAME_LEN 32 @@ -159,7 +162,7 @@ struct ccp_actions { /* Structure to hold CCP version-specific values */ struct ccp_vdata { unsigned int version; - struct ccp_actions *perform; + const struct ccp_actions *perform; }; extern struct ccp_vdata ccpv3; @@ -167,6 +170,39 @@ extern struct ccp_vdata ccpv3; struct ccp_device; struct ccp_cmd; +struct ccp_dma_cmd { + struct list_head entry; + + struct ccp_cmd ccp_cmd; +}; + +struct ccp_dma_desc { + struct list_head entry; + + struct ccp_device *ccp; + + struct list_head pending; + struct list_head active; + + enum dma_status status; + struct dma_async_tx_descriptor tx_desc; + size_t len; +}; + +struct ccp_dma_chan { + struct ccp_device *ccp; + + spinlock_t lock; + struct list_head pending; + struct list_head active; + struct list_head complete; + + struct tasklet_struct cleanup_tasklet; + + enum dma_status status; + struct dma_chan dma_chan; +}; + struct ccp_cmd_queue { struct ccp_device *ccp; @@ -261,6 +297,14 @@ struct ccp_device { unsigned int hwrng_retries; /* + * Support for the CCP DMA capabilities + */ + struct dma_device dma_dev; + struct ccp_dma_chan *ccp_dma_chan; + struct kmem_cache *dma_cmd_cache; + struct kmem_cache *dma_desc_cache; + + /* * A counter used to generate job-ids for cmds submitted to the CCP */ atomic_t current_id ____cacheline_aligned; @@ -418,4 +462,7 @@ int ccp_cmd_queue_thread(void *data); int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd); +int ccp_dmaengine_register(struct ccp_device *ccp); +void ccp_dmaengine_unregister(struct ccp_device *ccp); + #endif |