drivers: crypto: add support for OCTEONTX2 CPT engine

Add support for the cryptographic acceleration unit (CPT) on
OcteonTX2 CN96XX SoC.

Signed-off-by: Suheil Chandran <schandran@marvell.com>
Signed-off-by: Lukas Bartosik <lbartosik@marvell.com>
Signed-off-by: Srujana Challa <schalla@marvell.com>

drivers/crypto/marvell/Kconfig

@@ -35,3 +35,16 @@ config CRYPTO_DEV_OCTEONTX_CPT
 
 		To compile this driver as module, choose M here:
 		the modules will be called octeontx-cpt and octeontx-cptvf
+
+config CRYPTO_DEV_OCTEONTX2_CPT
+	tristate "Support for Marvell OcteonTX2 CPT driver"
+	depends on ARM64 || COMPILE_TEST
+	depends on PCI_MSI && 64BIT
+	select OCTEONTX2_MBOX
+	select CRYPTO_DEV_MARVELL
+	help
+		This driver allows you to utilize the Marvell Cryptographic
+		Accelerator Unit(CPT) found in OcteonTX2 series of processors.
+
+		To compile this driver as module, choose M here:
+		the modules will be called octeontx2-cpt and octeontx2-cptvf

drivers/crypto/marvell/Makefile

@@ -2,3 +2,4 @@
 
 obj-$(CONFIG_CRYPTO_DEV_MARVELL_CESA) += cesa/
 obj-$(CONFIG_CRYPTO_DEV_OCTEONTX_CPT) += octeontx/
+obj-$(CONFIG_CRYPTO_DEV_OCTEONTX2_CPT) += octeontx2/

drivers/crypto/marvell/octeontx2/Makefile

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_CRYPTO_DEV_OCTEONTX2_CPT) += octeontx2-cpt.o
+
+octeontx2-cpt-objs := otx2_cptpf_main.o otx2_cptpf_mbox.o otx2_cptpf_ucode.o \
+		      otx2_cpt_mbox_common.o
+
+ccflags-y += -I$(srctree)/drivers/net/ethernet/marvell/octeontx2/af

drivers/crypto/marvell/octeontx2/otx2_cpt_common.h

@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ * Copyright (C) 2020 Marvell.
+ */
+
+#ifndef __OTX2_CPT_COMMON_H
+#define __OTX2_CPT_COMMON_H
+
+#include <linux/pci.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/crypto.h>
+#include "otx2_cpt_hw_types.h"
+#include "rvu.h"
+
+#define OTX2_CPT_MAX_VFS_NUM 128
+#define OTX2_CPT_MAX_LFS_NUM 64
+
+#define OTX2_CPT_RVU_PFFUNC(pf, func)	\
+	((((pf) & RVU_PFVF_PF_MASK) << RVU_PFVF_PF_SHIFT) | \
+	(((func) & RVU_PFVF_FUNC_MASK) << RVU_PFVF_FUNC_SHIFT))
+
+#define OTX2_CPT_RVU_FUNC_ADDR_S(blk, slot, offs) \
+		(((blk) << 20) | ((slot) << 12) | (offs))
+
+#define OTX2_CPT_DMA_MINALIGN 128
+#define OTX2_CPT_INVALID_CRYPTO_ENG_GRP 0xFF
+
+#define OTX2_CPT_NAME_LENGTH 64
+
+#define BAD_OTX2_CPT_ENG_TYPE OTX2_CPT_MAX_ENG_TYPES
+
+enum otx2_cpt_eng_type {
+	OTX2_CPT_AE_TYPES = 1,
+	OTX2_CPT_SE_TYPES = 2,
+	OTX2_CPT_IE_TYPES = 3,
+	OTX2_CPT_MAX_ENG_TYPES,
+};
+
+static inline void otx2_cpt_write64(void __iomem *reg_base, u64 blk, u64 slot,
+				    u64 offs, u64 val)
+{
+	writeq_relaxed(val, reg_base +
+		       OTX2_CPT_RVU_FUNC_ADDR_S(blk, slot, offs));
+}
+
+static inline u64 otx2_cpt_read64(void __iomem *reg_base, u64 blk, u64 slot,
+				  u64 offs)
+{
+	return readq_relaxed(reg_base +
+			     OTX2_CPT_RVU_FUNC_ADDR_S(blk, slot, offs));
+}
+#endif /* __OTX2_CPT_COMMON_H */