diff options
| author | Vakul Garg <vakul@freescale.com> | 2013-05-30 04:10:41 (GMT) |
|---|---|---|
| committer | Fleming Andrew-AFLEMING <AFLEMING@freescale.com> | 2013-06-07 21:22:17 (GMT) |
| commit | 0438b27e56de4107f4582898f3bebfedfccd418c (patch) | |
| tree | a9590d8fb66a363b752fe05334bdc65e7b4e41cf /drivers/crypto/caam/qi.h | |
| parent | 0a72993663e41a4c2ddd52ef47f9f9a7deded926 (diff) | |
| download | linux-fsl-qoriq-0438b27e56de4107f4582898f3bebfedfccd418c.tar.xz | |
crypto: caam - Implement QI driver context update
On a crypto transform, a setkey() operation can be performed multiple
times e.g. when keys are changed. These requires updation of shared
descriptor in caam_qi driver. The shared descriptor in case of QI driver
is maintained inside driver context and it is prefixed with pre-header.
When shared descriptor is updated by the driver application, it needs to
be copied again into driver context and pre-header should also be
updated. With this patch, the caam_qi driver provides new api
caam_drv_ctx_update(). The caam_qi driver application has been updated
to call this api when setkey() operation changes shared descriptor.
Change-Id: Ice6065ac9461e2d7af2e19a8a8c6d2ad8b5394b8
Signed-off-by: Vakul Garg <vakul@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/2847
Reviewed-by: Varvara Andrei-B21317 <andrei.varvara@freescale.com>
Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Diffstat (limited to 'drivers/crypto/caam/qi.h')
| -rw-r--r-- | drivers/crypto/caam/qi.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/crypto/caam/qi.h b/drivers/crypto/caam/qi.h index e0d9920..109f890 100644 --- a/drivers/crypto/caam/qi.h +++ b/drivers/crypto/caam/qi.h @@ -129,6 +129,19 @@ extern int caam_qi_enqueue(struct device *qidev, struct caam_drv_req *req); */ extern bool caam_drv_ctx_busy(struct caam_drv_ctx *drv_ctx); +/* + * caam_drv_ctx_update - Upate QI drv context. + * + * Invoked when shared descriptor is required to be change in driver context. + * + * drv_ctx - Driver context to be updated + * + * sh_desc - New shared descriptor pointer to be updated in QI driver + * context. + * + * Returns 0 on success or negative error code on failure. + */ +extern int caam_drv_ctx_update(struct caam_drv_ctx *drv_ctx, u32 *sh_desc); /* * caam_drv_ctx_rel - Release a QI driver context. |