147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright (C) 2019 - 2021
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*
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* Richard van Schagen <vschagen@icloud.com>
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*/
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#ifndef _EIP93_MAIN_H_
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#define _EIP93_MAIN_H_
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#include <crypto/internal/aead.h>
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#include <crypto/internal/hash.h>
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#include <crypto/internal/rng.h>
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#include <crypto/internal/skcipher.h>
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#define MTK_RING_SIZE 512
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#define MTK_RING_BUSY 32
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#define MTK_CRA_PRIORITY 1500
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/* cipher algorithms */
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#define MTK_ALG_DES BIT(0)
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#define MTK_ALG_3DES BIT(1)
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#define MTK_ALG_AES BIT(2)
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#define MTK_ALG_MASK GENMASK(2, 0)
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/* hash and hmac algorithms */
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#define MTK_HASH_MD5 BIT(3)
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#define MTK_HASH_SHA1 BIT(4)
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#define MTK_HASH_SHA224 BIT(5)
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#define MTK_HASH_SHA256 BIT(6)
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#define MTK_HASH_HMAC BIT(7)
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#define MTK_HASH_MASK GENMASK(6, 3)
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/* cipher modes */
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#define MTK_MODE_CBC BIT(8)
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#define MTK_MODE_ECB BIT(9)
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#define MTK_MODE_CTR BIT(10)
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#define MTK_MODE_RFC3686 BIT(11)
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#define MTK_MODE_MASK GENMASK(10, 8)
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/* cipher encryption/decryption operations */
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#define MTK_ENCRYPT BIT(12)
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#define MTK_DECRYPT BIT(13)
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#define MTK_BUSY BIT(14)
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/* descriptor flags */
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#define MTK_DESC_ASYNC BIT(31)
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#define MTK_DESC_SKCIPHER BIT(30)
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#define MTK_DESC_AEAD BIT(29)
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#define MTK_DESC_AHASH BIT(28)
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#define MTK_DESC_PRNG BIT(27)
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#define MTK_DESC_FAKE_HMAC BIT(26)
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#define MTK_DESC_LAST BIT(25)
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#define MTK_DESC_FINISH BIT(24)
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#define MTK_DESC_IPSEC BIT(23)
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#define MTK_DESC_DMA_IV BIT(22)
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#define IS_DES(flags) (flags & MTK_ALG_DES)
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#define IS_3DES(flags) (flags & MTK_ALG_3DES)
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#define IS_AES(flags) (flags & MTK_ALG_AES)
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#define IS_HASH_MD5(flags) (flags & MTK_HASH_MD5)
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#define IS_HASH_SHA1(flags) (flags & MTK_HASH_SHA1)
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#define IS_HASH_SHA224(flags) (flags & MTK_HASH_SHA224)
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#define IS_HASH_SHA256(flags) (flags & MTK_HASH_SHA256)
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#define IS_HMAC(flags) (flags & MTK_HASH_HMAC)
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#define IS_CBC(mode) (mode & MTK_MODE_CBC)
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#define IS_ECB(mode) (mode & MTK_MODE_ECB)
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#define IS_CTR(mode) (mode & MTK_MODE_CTR)
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#define IS_RFC3686(mode) (mode & MTK_MODE_RFC3686)
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#define IS_BUSY(flags) (flags & MTK_BUSY)
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#define IS_DMA_IV(flags) (flags & MTK_DESC_DMA_IV)
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#define IS_ENCRYPT(dir) (dir & MTK_ENCRYPT)
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#define IS_DECRYPT(dir) (dir & MTK_DECRYPT)
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#define IS_CIPHER(flags) (flags & (MTK_ALG_DES || \
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MTK_ALG_3DES || \
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MTK_ALG_AES))
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#define IS_HASH(flags) (flags & (MTK_HASH_MD5 || \
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MTK_HASH_SHA1 || \
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MTK_HASH_SHA224 || \
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MTK_HASH_SHA256))
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/**
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* struct mtk_device - crypto engine device structure
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*/
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struct mtk_device {
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void __iomem *base;
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struct device *dev;
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struct clk *clk;
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int irq;
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struct mtk_ring *ring;
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struct mtk_state_pool *saState_pool;
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};
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struct mtk_desc_ring {
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void *base;
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void *base_end;
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dma_addr_t base_dma;
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/* write and read pointers */
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void *read;
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void *write;
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/* descriptor element offset */
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u32 offset;
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};
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struct mtk_state_pool {
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void *base;
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dma_addr_t base_dma;
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bool in_use;
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};
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struct mtk_ring {
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struct tasklet_struct done_task;
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/* command/result rings */
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struct mtk_desc_ring cdr;
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struct mtk_desc_ring rdr;
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spinlock_t write_lock;
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spinlock_t read_lock;
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atomic_t free;
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/* saState */
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struct mtk_state_pool *saState_pool;
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void *saState;
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dma_addr_t saState_dma;
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};
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enum mtk_alg_type {
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MTK_ALG_TYPE_AEAD,
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MTK_ALG_TYPE_SKCIPHER,
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};
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struct mtk_alg_template {
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struct mtk_device *mtk;
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enum mtk_alg_type type;
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u32 flags;
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union {
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struct aead_alg aead;
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struct skcipher_alg skcipher;
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} alg;
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};
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#endif /* _EIP93_MAIN_H_ */
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