crypto: caam/qi - add ablkcipher and authenc algorithms

Add support to submit ablkcipher and authenc algorithms
via the QI backend:
-ablkcipher:
cbc({aes,des,des3_ede})
ctr(aes), rfc3686(ctr(aes))
xts(aes)
-authenc:
authenc(hmac(md5),cbc({aes,des,des3_ede}))
authenc(hmac(sha*),cbc({aes,des,des3_ede}))

caam/qi being a new driver, let's wait some time to settle down without
interfering with existing caam/jr driver.
Accordingly, for now all caam/qi algorithms (caamalg_qi module) are
marked to be of lower priority than caam/jr ones (caamalg module).

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Signed-off-by: Alex Porosanu <alexandru.porosanu@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 108 insertions, 0 deletions

diff --git a/drivers/crypto/caam/sg_sw_qm.h b/drivers/crypto/caam/sg_sw_qm.h
new file mode 100644
index 000000000000..d000b4df745f
--- /dev/null
+++ b/drivers/crypto/caam/sg_sw_qm.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2013-2016 Freescale Semiconductor, Inc.
+ * Copyright 2016-2017 NXP
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SG_SW_QM_H
+#define __SG_SW_QM_H
+
+#include <soc/fsl/qman.h>
+#include "regs.h"
+
+static inline void __dma_to_qm_sg(struct qm_sg_entry *qm_sg_ptr, dma_addr_t dma,
+				  u16 offset)
+{
+	qm_sg_entry_set64(qm_sg_ptr, dma);
+	qm_sg_ptr->__reserved2 = 0;
+	qm_sg_ptr->bpid = 0;
+	qm_sg_ptr->offset = cpu_to_be16(offset & QM_SG_OFF_MASK);
+}
+
+static inline void dma_to_qm_sg_one(struct qm_sg_entry *qm_sg_ptr,
+				    dma_addr_t dma, u32 len, u16 offset)
+{
+	__dma_to_qm_sg(qm_sg_ptr, dma, offset);
+	qm_sg_entry_set_len(qm_sg_ptr, len);
+}
+
+static inline void dma_to_qm_sg_one_last(struct qm_sg_entry *qm_sg_ptr,
+					 dma_addr_t dma, u32 len, u16 offset)
+{
+	__dma_to_qm_sg(qm_sg_ptr, dma, offset);
+	qm_sg_entry_set_f(qm_sg_ptr, len);
+}
+
+static inline void dma_to_qm_sg_one_ext(struct qm_sg_entry *qm_sg_ptr,
+					dma_addr_t dma, u32 len, u16 offset)
+{
+	__dma_to_qm_sg(qm_sg_ptr, dma, offset);
+	qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | (len & QM_SG_LEN_MASK));
+}
+
+static inline void dma_to_qm_sg_one_last_ext(struct qm_sg_entry *qm_sg_ptr,
+					     dma_addr_t dma, u32 len,
+					     u16 offset)
+{
+	__dma_to_qm_sg(qm_sg_ptr, dma, offset);
+	qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | QM_SG_FIN |
+				     (len & QM_SG_LEN_MASK));
+}
+
+/*
+ * convert scatterlist to h/w link table format
+ * but does not have final bit; instead, returns last entry
+ */
+static inline struct qm_sg_entry *
+sg_to_qm_sg(struct scatterlist *sg, int sg_count,
+	    struct qm_sg_entry *qm_sg_ptr, u16 offset)
+{
+	while (sg_count && sg) {
+		dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg),
+				 sg_dma_len(sg), offset);
+		qm_sg_ptr++;
+		sg = sg_next(sg);
+		sg_count--;
+	}
+	return qm_sg_ptr - 1;
+}
+
+/*
+ * convert scatterlist to h/w link table format
+ * scatterlist must have been previously dma mapped
+ */
+static inline void sg_to_qm_sg_last(struct scatterlist *sg, int sg_count,
+				    struct qm_sg_entry *qm_sg_ptr, u16 offset)
+{
+	qm_sg_ptr = sg_to_qm_sg(sg, sg_count, qm_sg_ptr, offset);
+	qm_sg_entry_set_f(qm_sg_ptr, qm_sg_entry_get_len(qm_sg_ptr));
+}
+
+#endif /* __SG_SW_QM_H */