diff options
Diffstat (limited to 'drivers/crypto/caam/qi.h')
| -rw-r--r-- | drivers/crypto/caam/qi.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/crypto/caam/qi.h b/drivers/crypto/caam/qi.h index e8e7c1a..33f7470 100644 --- a/drivers/crypto/caam/qi.h +++ b/drivers/crypto/caam/qi.h @@ -150,4 +150,28 @@ extern void caam_drv_ctx_rel(struct caam_drv_ctx *drv_ctx); extern int caam_qi_init(struct platform_device *pdev, struct device_node *np); extern int caam_qi_shutdown(struct device *dev); +/* + * qi_cache_alloc - Allocate buffers from CAAM-QI cache + * + * Invoked when a user of the CAAM-QI (i.e. caamalg-qi) needs data which has + * to be allocated on the hotpath. Instead of using malloc, one can use the + * services of the CAAM QI memory cache (backed by kmem_cache). The buffers + * will have a size of 256B, which is sufficient for hosting 16 SG entries. + * + * flags - flags that would be used for the equivalent malloc(..) call + * * + * Returns a pointer to a retrieved buffer on success or NULL on failure. + */ +extern void *qi_cache_alloc(gfp_t flags); + +/* + * qi_cache_free - Frees buffers allocated from CAAM-QI cache + * + * Invoked when a user of the CAAM-QI (i.e. caamalg-qi) no longer needs + * the buffer previously allocated by a qi_cache_alloc call. + * No checking is being done, the call is a passthrough call to + * kmem_cache_free(...) + */ +extern void qi_cache_free(void *obj); + #endif /* QI_H */ |