static int ccp5_perform_passthru(struct ccp_op *op)
{
struct ccp5_desc desc;
union ccp_function function;
struct ccp_dma_info *saddr = &op->src.u.dma;
struct ccp_dma_info *daddr = &op->dst.u.dma;
op->cmd_q->total_pt_ops++;
memset(&desc, 0, Q_DESC_SIZE);
CCP5_CMD_ENGINE(&desc) = CCP_ENGINE_PASSTHRU;
CCP5_CMD_SOC(&desc) = 0;
CCP5_CMD_IOC(&desc) = 1;
CCP5_CMD_INIT(&desc) = 0;
CCP5_CMD_EOM(&desc) = op->eom;
CCP5_CMD_PROT(&desc) = 0;
function.raw = 0;
CCP_PT_BYTESWAP(&function) = op->u.passthru.byte_swap;
CCP_PT_BITWISE(&function) = op->u.passthru.bit_mod;
CCP5_CMD_FUNCTION(&desc) = function.raw;
/* Length of source data is always 256 bytes */
if (op->src.type == CCP_MEMTYPE_SYSTEM)
CCP5_CMD_LEN(&desc) = saddr->length;
else
CCP5_CMD_LEN(&desc) = daddr->length;
if (op->src.type == CCP_MEMTYPE_SYSTEM) {
CCP5_CMD_SRC_LO(&desc) = ccp_addr_lo(&op->src.u.dma);
CCP5_CMD_SRC_HI(&desc) = ccp_addr_hi(&op->src.u.dma);
CCP5_CMD_SRC_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
if (op->u.passthru.bit_mod != CCP_PASSTHRU_BITWISE_NOOP)
CCP5_CMD_LSB_ID(&desc) = op->sb_key;
} else {
u32 key_addr = op->src.u.sb * CCP_SB_BYTES;
CCP5_CMD_SRC_LO(&desc) = lower_32_bits(key_addr);
CCP5_CMD_SRC_HI(&desc) = 0;
CCP5_CMD_SRC_MEM(&desc) = CCP_MEMTYPE_SB;
}
if (op->dst.type == CCP_MEMTYPE_SYSTEM) {
CCP5_CMD_DST_LO(&desc) = ccp_addr_lo(&op->dst.u.dma);
CCP5_CMD_DST_HI(&desc) = ccp_addr_hi(&op->dst.u.dma);
CCP5_CMD_DST_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
} else {
u32 key_addr = op->dst.u.sb * CCP_SB_BYTES;
CCP5_CMD_DST_LO(&desc) = lower_32_bits(key_addr);
CCP5_CMD_DST_HI(&desc) = 0;
CCP5_CMD_DST_MEM(&desc) = CCP_MEMTYPE_SB;
}
return ccp5_do_cmd(&desc, op->cmd_q);
}
static int ccp5_perform_ecc(struct ccp_op *op)
{
struct ccp5_desc desc;
union ccp_function function;
/* Zero out all the fields of the command desc */
memset(&desc, 0, Q_DESC_SIZE);
CCP5_CMD_ENGINE(&desc) = CCP_ENGINE_ECC;
CCP5_CMD_SOC(&desc) = 0;
CCP5_CMD_IOC(&desc) = 1;
CCP5_CMD_INIT(&desc) = 0;
CCP5_CMD_EOM(&desc) = 1;
CCP5_CMD_PROT(&desc) = 0;
function.raw = 0;
function.ecc.mode = op->u.ecc.function;
CCP5_CMD_FUNCTION(&desc) = function.raw;
CCP5_CMD_LEN(&desc) = op->src.u.dma.length;
CCP5_CMD_SRC_LO(&desc) = ccp_addr_lo(&op->src.u.dma);
CCP5_CMD_SRC_HI(&desc) = ccp_addr_hi(&op->src.u.dma);
CCP5_CMD_SRC_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
CCP5_CMD_DST_LO(&desc) = ccp_addr_lo(&op->dst.u.dma);
CCP5_CMD_DST_HI(&desc) = ccp_addr_hi(&op->dst.u.dma);
CCP5_CMD_DST_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
return ccp5_do_cmd(&desc, op->cmd_q);
}
static int ccp5_perform_aes(struct ccp_op *op)
{
struct ccp5_desc desc;
union ccp_function function;
u32 key_addr = op->sb_key * LSB_ITEM_SIZE;
op->cmd_q->total_aes_ops++;
/* Zero out all the fields of the command desc */
memset(&desc, 0, Q_DESC_SIZE);
CCP5_CMD_ENGINE(&desc) = CCP_ENGINE_AES;
CCP5_CMD_SOC(&desc) = op->soc;
CCP5_CMD_IOC(&desc) = 1;
CCP5_CMD_INIT(&desc) = op->init;
CCP5_CMD_EOM(&desc) = op->eom;
CCP5_CMD_PROT(&desc) = 0;
function.raw = 0;
CCP_AES_ENCRYPT(&function) = op->u.aes.action;
CCP_AES_MODE(&function) = op->u.aes.mode;
CCP_AES_TYPE(&function) = op->u.aes.type;
CCP_AES_SIZE(&function) = op->u.aes.size;
CCP5_CMD_FUNCTION(&desc) = function.raw;
CCP5_CMD_LEN(&desc) = op->src.u.dma.length;
CCP5_CMD_SRC_LO(&desc) = ccp_addr_lo(&op->src.u.dma);
CCP5_CMD_SRC_HI(&desc) = ccp_addr_hi(&op->src.u.dma);
CCP5_CMD_SRC_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
CCP5_CMD_DST_LO(&desc) = ccp_addr_lo(&op->dst.u.dma);
CCP5_CMD_DST_HI(&desc) = ccp_addr_hi(&op->dst.u.dma);
CCP5_CMD_DST_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
CCP5_CMD_KEY_LO(&desc) = lower_32_bits(key_addr);
CCP5_CMD_KEY_HI(&desc) = 0;
CCP5_CMD_KEY_MEM(&desc) = CCP_MEMTYPE_SB;
CCP5_CMD_LSB_ID(&desc) = op->sb_ctx;
return ccp5_do_cmd(&desc, op->cmd_q);
}
static int ccp5_perform_rsa(struct ccp_op *op)
{
struct ccp5_desc desc;
union ccp_function function;
op->cmd_q->total_rsa_ops++;
/* Zero out all the fields of the command desc */
memset(&desc, 0, Q_DESC_SIZE);
CCP5_CMD_ENGINE(&desc) = CCP_ENGINE_RSA;
CCP5_CMD_SOC(&desc) = op->soc;
CCP5_CMD_IOC(&desc) = 1;
CCP5_CMD_INIT(&desc) = 0;
CCP5_CMD_EOM(&desc) = 1;
CCP5_CMD_PROT(&desc) = 0;
function.raw = 0;
CCP_RSA_SIZE(&function) = (op->u.rsa.mod_size + 7) >> 3;
CCP5_CMD_FUNCTION(&desc) = function.raw;
CCP5_CMD_LEN(&desc) = op->u.rsa.input_len;
/* Source is from external memory */
CCP5_CMD_SRC_LO(&desc) = ccp_addr_lo(&op->src.u.dma);
CCP5_CMD_SRC_HI(&desc) = ccp_addr_hi(&op->src.u.dma);
CCP5_CMD_SRC_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
/* Destination is in external memory */
CCP5_CMD_DST_LO(&desc) = ccp_addr_lo(&op->dst.u.dma);
CCP5_CMD_DST_HI(&desc) = ccp_addr_hi(&op->dst.u.dma);
CCP5_CMD_DST_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
/* Key (Exponent) is in external memory */
CCP5_CMD_KEY_LO(&desc) = ccp_addr_lo(&op->exp.u.dma);
CCP5_CMD_KEY_HI(&desc) = ccp_addr_hi(&op->exp.u.dma);
CCP5_CMD_KEY_MEM(&desc) = CCP_MEMTYPE_SYSTEM;
return ccp5_do_cmd(&desc, op->cmd_q);
}