crypto: hisilicon - add HiSilicon ZIP accelerator support

The HiSilicon ZIP accelerator implements the zlib and gzip algorithm. It
uses Hisilicon QM as the interface to the CPU.

This patch provides PCIe driver to the accelerator and registers it to
crypto acomp interface. It also uses sgl as data input/output interface.

Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
Signed-off-by: Hao Fang <fanghao11@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/hisilicon/Kconfig

@@ -27,3 +27,11 @@ config CRYPTO_HISI_SGL
 	  HiSilicon accelerator engines use a common hardware scatterlist
 	  interface for data format. Specific engine driver may use this
 	  module.
+
+config CRYPTO_DEV_HISI_ZIP
+	tristate "Support for HiSilicon ZIP accelerator"
+	select CRYPTO_DEV_HISI_QM
+	select CRYPTO_HISI_SGL
+	select SG_SPLIT
+	help
+	  Support for HiSilicon ZIP Driver

drivers/crypto/hisilicon/Makefile

@@ -2,3 +2,4 @@
 obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += sec/
 obj-$(CONFIG_CRYPTO_DEV_HISI_QM) += qm.o
 obj-$(CONFIG_CRYPTO_HISI_SGL) += sgl.o
+obj-$(CONFIG_CRYPTO_DEV_HISI_ZIP) += zip/

drivers/crypto/hisilicon/zip/Makefile

@@ -0,0 +1,2 @@
+obj-$(CONFIG_CRYPTO_DEV_HISI_ZIP) += hisi_zip.o
+hisi_zip-objs = zip_main.o zip_crypto.o

drivers/crypto/hisilicon/zip/zip.h

@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019 HiSilicon Limited. */
+#ifndef HISI_ZIP_H
+#define HISI_ZIP_H
+
+#undef pr_fmt
+#define pr_fmt(fmt)	"hisi_zip: " fmt
+
+#include <linux/list.h>
+#include "../qm.h"
+#include "../sgl.h"
+
+/* hisi_zip_sqe dw3 */
+#define HZIP_BD_STATUS_M			GENMASK(7, 0)
+/* hisi_zip_sqe dw9 */
+#define HZIP_REQ_TYPE_M				GENMASK(7, 0)
+#define HZIP_ALG_TYPE_ZLIB			0x02
+#define HZIP_ALG_TYPE_GZIP			0x03
+#define HZIP_BUF_TYPE_M				GENMASK(11, 8)
+#define HZIP_PBUFFER				0x0
+#define HZIP_SGL				0x1
+
+enum hisi_zip_error_type {
+	/* negative compression */
+	HZIP_NC_ERR = 0x0d,
+};
+
+struct hisi_zip_ctrl;
+
+struct hisi_zip {
+	struct hisi_qm qm;
+	struct list_head list;
+	struct hisi_zip_ctrl *ctrl;
+};
+
+struct hisi_zip_sqe {
+	u32 consumed;
+	u32 produced;
+	u32 comp_data_length;
+	u32 dw3;
+	u32 input_data_length;
+	u32 lba_l;
+	u32 lba_h;
+	u32 dw7;
+	u32 dw8;
+	u32 dw9;
+	u32 dw10;
+	u32 priv_info;
+	u32 dw12;
+	u32 tag;
+	u32 dest_avail_out;
+	u32 rsvd0;
+	u32 comp_head_addr_l;
+	u32 comp_head_addr_h;
+	u32 source_addr_l;
+	u32 source_addr_h;
+	u32 dest_addr_l;
+	u32 dest_addr_h;
+	u32 stream_ctx_addr_l;
+	u32 stream_ctx_addr_h;
+	u32 cipher_key1_addr_l;
+	u32 cipher_key1_addr_h;
+	u32 cipher_key2_addr_l;
+	u32 cipher_key2_addr_h;
+	u32 rsvd1[4];
+};
+
+struct hisi_zip *find_zip_device(int node);
+int hisi_zip_register_to_crypto(void);
+void hisi_zip_unregister_from_crypto(void);
+#endif