intel/keembay/ocs-aes.c

3  * Intel Keem Bay OCS AES Crypto Driver.
20 #include "ocs-aes.h"
136  * During CCM decrypt, the OCS block needs to finish processing the ciphertext
137  * before the tag is written. For 128-bit mode this required delay is 28 OCS
138  * clock cycles. For 256-bit mode it is 36 OCS clock cycles.
143  * During CCM decrypt there must be a delay of at least 42 OCS clock cycles
145  * bit in the same register (as stated in the OCS databook)
175  * struct ocs_dma_linked_list - OCS DMA linked list entry.
407 /* Enable and wait for IRQ (either from OCS AES engine or DMA) */
421 /* Configure DMA to OCS, linked list mode */
430 /* Configure DMA from OCS, linked list mode */
467  * ocs_aes_set_key() - Write key into OCS AES hardware.
468  * @aes_dev:	The OCS AES device to write the key to.
484 	/* OCS AES supports 128-bit and 256-bit keys only. */  in ocs_aes_set_key()
491 	/* OCS SM4 supports 128-bit keys only. */  in ocs_aes_set_key()
622 	 * When instruction is OCS_BYPASS, OCS simply copies data from source  in ocs_aes_validate_inputs()
784  * @aes_dev:		The OCS AES device to use.
788  * @dst_dma_list:	The OCS DMA list mapping output memory.
789  * @src_dma_list:	The OCS DMA list mapping input payload data.
911  * @aes_dev:		The OCS AES device to use.
914  * @dst_dma_list:	The OCS DMA list mapping output memory.
915  * @src_dma_list:	The OCS DMA list mapping input payload data.
918  * @aad_dma_list:	The OCS DMA list mapping input AAD data.
951 	/* Compute and write J0 to OCS HW. */  in ocs_aes_gcm_op()
1012 	/* Wait for OCS AES engine to complete processing. */  in ocs_aes_gcm_op()
1032 	 * During CCM decrypt, the OCS block needs to finish processing the  in ocs_aes_ccm_write_encrypted_tag()
1048  * Write B0 CCM block to OCS AES HW.
1112 	/* Now write B0 to OCS AES input buffer. */  in ocs_aes_ccm_write_b0()
1120  * Write adata length to OCS AES HW.
1290  * @aes_dev:		The OCS AES device to use.
1293  * @dst_dma_list:	The OCS DMA list mapping output memory.
1294  * @src_dma_list:	The OCS DMA list mapping input payload data.
1297  * @adata_dma_list:	The OCS DMA list mapping input A-data.
1402  * ocs_create_linked_list_from_sg() - Create OCS DMA linked list from SG list.
1403  * @aes_dev:	  The OCS AES device the list will be created for.
1404  * @sg:		  The SG list OCS DMA linked list will be created from. When
1409  * @dll_desc:	  The OCS DMA dma_list to use to store information about the
1412  *		  OCS DMA linked list.
1450 	/* Compute number of DMA-mapped SG entries to add into OCS DMA list. */  in ocs_create_linked_list_from_sg()