--- /dev/null
+/**
+ * AMCC SoC PPC4xx Crypto Driver
+ *
+ * Copyright (c) 2008 Applied Micro Circuits Corporation.
+ * All rights reserved. James Hsiao <jhsiao@amcc.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * This is the header file for AMCC Crypto offload Linux device driver for
+ * use with Linux CryptoAPI.
+
+ */
+
+#ifndef __CRYPTO4XX_CORE_H__
+#define __CRYPTO4XX_CORE_H__
+
+#include <crypto/internal/hash.h>
+
+#define PPC460SX_SDR0_SRST 0x201
+#define PPC405EX_SDR0_SRST 0x200
+#define PPC460EX_SDR0_SRST 0x201
+#define PPC460EX_CE_RESET 0x08000000
+#define PPC460SX_CE_RESET 0x20000000
+#define PPC405EX_CE_RESET 0x00000008
+
+#define CRYPTO4XX_CRYPTO_PRIORITY 300
+#define PPC4XX_LAST_PD 63
+#define PPC4XX_NUM_PD 64
+#define PPC4XX_LAST_GD 1023
+#define PPC4XX_NUM_GD 1024
+#define PPC4XX_LAST_SD 63
+#define PPC4XX_NUM_SD 64
+#define PPC4XX_SD_BUFFER_SIZE 2048
+
+#define PD_ENTRY_INUSE 1
+#define PD_ENTRY_FREE 0
+#define ERING_WAS_FULL 0xffffffff
+
+struct crypto4xx_device;
+
+struct pd_uinfo {
+ struct crypto4xx_device *dev;
+ u32 state;
+ u32 using_sd;
+ u32 first_gd; /* first gather discriptor
+ used by this packet */
+ u32 num_gd; /* number of gather discriptor
+ used by this packet */
+ u32 first_sd; /* first scatter discriptor
+ used by this packet */
+ u32 num_sd; /* number of scatter discriptors
+ used by this packet */
+ void *sa_va; /* shadow sa, when using cp from ctx->sa */
+ u32 sa_pa;
+ void *sr_va; /* state record for shadow sa */
+ u32 sr_pa;
+ struct scatterlist *dest_va;
+ struct crypto_async_request *async_req; /* base crypto request
+ for this packet */
+};
+
+struct crypto4xx_device {
+ struct crypto4xx_core_device *core_dev;
+ char *name;
+ u64 ce_phy_address;
+ void __iomem *ce_base;
+
+ void *pdr; /* base address of packet
+ descriptor ring */
+ dma_addr_t pdr_pa; /* physical address used to
+ program ce pdr_base_register */
+ void *gdr; /* gather descriptor ring */
+ dma_addr_t gdr_pa; /* physical address used to
+ program ce gdr_base_register */
+ void *sdr; /* scatter descriptor ring */
+ dma_addr_t sdr_pa; /* physical address used to
+ program ce sdr_base_register */
+ void *scatter_buffer_va;
+ dma_addr_t scatter_buffer_pa;
+ u32 scatter_buffer_size;
+
+ void *shadow_sa_pool; /* pool of memory for sa in pd_uinfo */
+ dma_addr_t shadow_sa_pool_pa;
+ void *shadow_sr_pool; /* pool of memory for sr in pd_uinfo */
+ dma_addr_t shadow_sr_pool_pa;
+ u32 pdr_tail;
+ u32 pdr_head;
+ u32 gdr_tail;
+ u32 gdr_head;
+ u32 sdr_tail;
+ u32 sdr_head;
+ void *pdr_uinfo;
+ struct list_head alg_list; /* List of algorithm supported
+ by this device */
+};
+
+struct crypto4xx_core_device {
+ struct device *device;
+ struct platform_device *ofdev;
+ struct crypto4xx_device *dev;
+ u32 int_status;
+ u32 irq;
+ struct tasklet_struct tasklet;
+ spinlock_t lock;
+};
+
+struct crypto4xx_ctx {
+ struct crypto4xx_device *dev;
+ void *sa_in;
+ dma_addr_t sa_in_dma_addr;
+ void *sa_out;
+ dma_addr_t sa_out_dma_addr;
+ void *state_record;
+ dma_addr_t state_record_dma_addr;
+ u32 sa_len;
+ u32 offset_to_sr_ptr; /* offset to state ptr, in dynamic sa */
+ u32 direction;
+ u32 next_hdr;
+ u32 save_iv;
+ u32 pd_ctl_len;
+ u32 pd_ctl;
+ u32 bypass;
+ u32 is_hash;
+ u32 hash_final;
+};
+
+struct crypto4xx_req_ctx {
+ struct crypto4xx_device *dev; /* Device in which
+ operation to send to */
+ void *sa;
+ u32 sa_dma_addr;
+ u16 sa_len;
+};
+
+struct crypto4xx_alg_common {
+ u32 type;
+ union {
+ struct crypto_alg cipher;
+ struct ahash_alg hash;
+ } u;
+};
+
+struct crypto4xx_alg {
+ struct list_head entry;
+ struct crypto4xx_alg_common alg;
+ struct crypto4xx_device *dev;
+};
+
+static inline struct crypto4xx_alg *crypto_alg_to_crypto4xx_alg(
+ struct crypto_alg *x)
+{
+ switch (x->cra_flags & CRYPTO_ALG_TYPE_MASK) {
+ case CRYPTO_ALG_TYPE_AHASH:
+ return container_of(__crypto_ahash_alg(x),
+ struct crypto4xx_alg, alg.u.hash);
+ }
+
+ return container_of(x, struct crypto4xx_alg, alg.u.cipher);
+}
+
+extern int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size);
+extern void crypto4xx_free_sa(struct crypto4xx_ctx *ctx);
+extern u32 crypto4xx_alloc_sa_rctx(struct crypto4xx_ctx *ctx,
+ struct crypto4xx_ctx *rctx);
+extern void crypto4xx_free_sa_rctx(struct crypto4xx_ctx *rctx);
+extern void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx);
+extern u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx);
+extern u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx);
+extern u32 get_dynamic_sa_offset_key_field(struct crypto4xx_ctx *ctx);
+extern u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx);
+extern void crypto4xx_memcpy_le(unsigned int *dst,
+ const unsigned char *buf, int len);
+extern u32 crypto4xx_build_pd(struct crypto_async_request *req,
+ struct crypto4xx_ctx *ctx,
+ struct scatterlist *src,
+ struct scatterlist *dst,
+ unsigned int datalen,
+ void *iv, u32 iv_len);
+extern int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher,
+ const u8 *key, unsigned int keylen);
+extern int crypto4xx_encrypt(struct ablkcipher_request *req);
+extern int crypto4xx_decrypt(struct ablkcipher_request *req);
+extern int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm);
+extern int crypto4xx_hash_digest(struct ahash_request *req);
+extern int crypto4xx_hash_final(struct ahash_request *req);
+extern int crypto4xx_hash_update(struct ahash_request *req);
+extern int crypto4xx_hash_init(struct ahash_request *req);
+#endif
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