Quelle cesa.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MARVELL_CESA_H__
#define __MARVELL_CESA_H__
#include <crypto/internal/hash.h>
#include <crypto/internal/skcipher.h>
#include <linux/dma-direction.h>
#include <linux/dmapool.h>
#define CESA_ENGINE_OFF(i) (((i) * 0 x2000))
#define CESA_TDMA_BYTE_CNT 0 x800
#define CESA_TDMA_SRC_ADDR 0 x810
#define CESA_TDMA_DST_ADDR 0 x820
#define CESA_TDMA_NEXT_ADDR 0 x830
#define CESA_TDMA_CONTROL 0 x840
#define CESA_TDMA_DST_BURST GENMASK(2 , 0 )
#define CESA_TDMA_DST_BURST_32B 3
#define CESA_TDMA_DST_BURST_128B 4
#define CESA_TDMA_OUT_RD_EN BIT(4 )
#define CESA_TDMA_SRC_BURST GENMASK(8 , 6 )
#define CESA_TDMA_SRC_BURST_32B (3 << 6 )
#define CESA_TDMA_SRC_BURST_128B (4 << 6 )
#define CESA_TDMA_CHAIN BIT(9 )
#define CESA_TDMA_BYTE_SWAP BIT(11 )
#define CESA_TDMA_NO_BYTE_SWAP BIT(11 )
#define CESA_TDMA_EN BIT(12 )
#define CESA_TDMA_FETCH_ND BIT(13 )
#define CESA_TDMA_ACT BIT(14 )
#define CESA_TDMA_CUR 0 x870
#define CESA_TDMA_ERROR_CAUSE 0 x8c8
#define CESA_TDMA_ERROR_MSK 0 x8cc
#define CESA_TDMA_WINDOW_BASE(x) (((x) * 0 x8) + 0 xa00)
#define CESA_TDMA_WINDOW_CTRL(x) (((x) * 0 x8) + 0 xa04)
#define CESA_IVDIG(x) (0 xdd00 + ((x) * 4 ) + \
(((x) < 5 ) ? 0 : 0 x14))
#define CESA_SA_CMD 0 xde00
#define CESA_SA_CMD_EN_CESA_SA_ACCL0 BIT(0 )
#define CESA_SA_CMD_EN_CESA_SA_ACCL1 BIT(1 )
#define CESA_SA_CMD_DISABLE_SEC BIT(2 )
#define CESA_SA_DESC_P0 0 xde04
#define CESA_SA_DESC_P1 0 xde14
#define CESA_SA_CFG 0 xde08
#define CESA_SA_CFG_STOP_DIG_ERR GENMASK(1 , 0 )
#define CESA_SA_CFG_DIG_ERR_CONT 0
#define CESA_SA_CFG_DIG_ERR_SKIP 1
#define CESA_SA_CFG_DIG_ERR_STOP 3
#define CESA_SA_CFG_CH0_W_IDMA BIT(7 )
#define CESA_SA_CFG_CH1_W_IDMA BIT(8 )
#define CESA_SA_CFG_ACT_CH0_IDMA BIT(9 )
#define CESA_SA_CFG_ACT_CH1_IDMA BIT(10 )
#define CESA_SA_CFG_MULTI_PKT BIT(11 )
#define CESA_SA_CFG_PARA_DIS BIT(13 )
#define CESA_SA_ACCEL_STATUS 0 xde0c
#define CESA_SA_ST_ACT_0 BIT(0 )
#define CESA_SA_ST_ACT_1 BIT(1 )
/*
* CESA_SA_FPGA_INT_STATUS looks like an FPGA leftover and is documented only
* in Errata 4 . 12 . It looks like that it was part of an IRQ - controller in FPGA
* and someone forgot to remove it while switching to the core and moving to
* CESA_SA_INT_STATUS .
*/
#define CESA_SA_FPGA_INT_STATUS 0 xdd68
#define CESA_SA_INT_STATUS 0 xde20
#define CESA_SA_INT_AUTH_DONE BIT(0 )
#define CESA_SA_INT_DES_E_DONE BIT(1 )
#define CESA_SA_INT_AES_E_DONE BIT(2 )
#define CESA_SA_INT_AES_D_DONE BIT(3 )
#define CESA_SA_INT_ENC_DONE BIT(4 )
#define CESA_SA_INT_ACCEL0_DONE BIT(5 )
#define CESA_SA_INT_ACCEL1_DONE BIT(6 )
#define CESA_SA_INT_ACC0_IDMA_DONE BIT(7 )
#define CESA_SA_INT_ACC1_IDMA_DONE BIT(8 )
#define CESA_SA_INT_IDMA_DONE BIT(9 )
#define CESA_SA_INT_IDMA_OWN_ERR BIT(10 )
#define CESA_SA_INT_MSK 0 xde24
#define CESA_SA_DESC_CFG_OP_MAC_ONLY 0
#define CESA_SA_DESC_CFG_OP_CRYPT_ONLY 1
#define CESA_SA_DESC_CFG_OP_MAC_CRYPT 2
#define CESA_SA_DESC_CFG_OP_CRYPT_MAC 3
#define CESA_SA_DESC_CFG_OP_MSK GENMASK(1 , 0 )
#define CESA_SA_DESC_CFG_MACM_SHA256 (1 << 4 )
#define CESA_SA_DESC_CFG_MACM_HMAC_SHA256 (3 << 4 )
#define CESA_SA_DESC_CFG_MACM_MD5 (4 << 4 )
#define CESA_SA_DESC_CFG_MACM_SHA1 (5 << 4 )
#define CESA_SA_DESC_CFG_MACM_HMAC_MD5 (6 << 4 )
#define CESA_SA_DESC_CFG_MACM_HMAC_SHA1 (7 << 4 )
#define CESA_SA_DESC_CFG_MACM_MSK GENMASK(6 , 4 )
#define CESA_SA_DESC_CFG_CRYPTM_DES (1 << 8 )
#define CESA_SA_DESC_CFG_CRYPTM_3DES (2 << 8 )
#define CESA_SA_DESC_CFG_CRYPTM_AES (3 << 8 )
#define CESA_SA_DESC_CFG_CRYPTM_MSK GENMASK(9 , 8 )
#define CESA_SA_DESC_CFG_DIR_ENC (0 << 12 )
#define CESA_SA_DESC_CFG_DIR_DEC (1 << 12 )
#define CESA_SA_DESC_CFG_CRYPTCM_ECB (0 << 16 )
#define CESA_SA_DESC_CFG_CRYPTCM_CBC (1 << 16 )
#define CESA_SA_DESC_CFG_CRYPTCM_MSK BIT(16 )
#define CESA_SA_DESC_CFG_3DES_EEE (0 << 20 )
#define CESA_SA_DESC_CFG_3DES_EDE (1 << 20 )
#define CESA_SA_DESC_CFG_AES_LEN_128 (0 << 24 )
#define CESA_SA_DESC_CFG_AES_LEN_192 (1 << 24 )
#define CESA_SA_DESC_CFG_AES_LEN_256 (2 << 24 )
#define CESA_SA_DESC_CFG_AES_LEN_MSK GENMASK(25 , 24 )
#define CESA_SA_DESC_CFG_NOT_FRAG (0 << 30 )
#define CESA_SA_DESC_CFG_FIRST_FRAG (1 << 30 )
#define CESA_SA_DESC_CFG_LAST_FRAG (2 << 30 )
#define CESA_SA_DESC_CFG_MID_FRAG (3 << 30 )
#define CESA_SA_DESC_CFG_FRAG_MSK GENMASK(31 , 30 )
/*
* / - - - - - - - - - - - \ 0
* | ACCEL CFG | 4 * 8
* | - - - - - - - - - - - | 0 x20
* | CRYPT KEY | 8 * 4
* | - - - - - - - - - - - | 0 x40
* | IV IN | 4 * 4
* | - - - - - - - - - - - | 0 x40 ( inplace )
* | IV BUF | 4 * 4
* | - - - - - - - - - - - | 0 x80
* | DATA IN | 16 * x ( max - > max_req_size )
* | - - - - - - - - - - - | 0 x80 ( inplace operation )
* | DATA OUT | 16 * x ( max - > max_req_size )
* \ - - - - - - - - - - - / SRAM size
*/
/*
* Hashing memory map :
* / - - - - - - - - - - - \ 0
* | ACCEL CFG | 4 * 8
* | - - - - - - - - - - - | 0 x20
* | Inner IV | 8 * 4
* | - - - - - - - - - - - | 0 x40
* | Outer IV | 8 * 4
* | - - - - - - - - - - - | 0 x60
* | Output BUF | 8 * 4
* | - - - - - - - - - - - | 0 x80
* | DATA IN | 64 * x ( max - > max_req_size )
* \ - - - - - - - - - - - / SRAM size
*/
#define CESA_SA_CFG_SRAM_OFFSET 0 x00
#define CESA_SA_DATA_SRAM_OFFSET 0 x80
#define CESA_SA_CRYPT_KEY_SRAM_OFFSET 0 x20
#define CESA_SA_CRYPT_IV_SRAM_OFFSET 0 x40
#define CESA_SA_MAC_IIV_SRAM_OFFSET 0 x20
#define CESA_SA_MAC_OIV_SRAM_OFFSET 0 x40
#define CESA_SA_MAC_DIG_SRAM_OFFSET 0 x60
#define CESA_SA_DESC_CRYPT_DATA(offset) \
cpu_to_le32((CESA_SA_DATA_SRAM_OFFSET + (offset)) | \
((CESA_SA_DATA_SRAM_OFFSET + (offset)) << 16 ))
#define CESA_SA_DESC_CRYPT_IV(offset) \
cpu_to_le32((CESA_SA_CRYPT_IV_SRAM_OFFSET + (offset)) | \
((CESA_SA_CRYPT_IV_SRAM_OFFSET + (offset)) << 16 ))
#define CESA_SA_DESC_CRYPT_KEY(offset) \
cpu_to_le32(CESA_SA_CRYPT_KEY_SRAM_OFFSET + (offset))
#define CESA_SA_DESC_MAC_DATA(offset) \
cpu_to_le32(CESA_SA_DATA_SRAM_OFFSET + (offset))
#define CESA_SA_DESC_MAC_DATA_MSK cpu_to_le32(GENMASK(15 , 0 ))
#define CESA_SA_DESC_MAC_TOTAL_LEN(total_len) cpu_to_le32((total_len) << 16 )
#define CESA_SA_DESC_MAC_TOTAL_LEN_MSK cpu_to_le32(GENMASK(31 , 16 ))
#define CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX 0 xffff
#define CESA_SA_DESC_MAC_DIGEST(offset) \
cpu_to_le32(CESA_SA_MAC_DIG_SRAM_OFFSET + (offset))
#define CESA_SA_DESC_MAC_DIGEST_MSK cpu_to_le32(GENMASK(15 , 0 ))
#define CESA_SA_DESC_MAC_FRAG_LEN(frag_len) cpu_to_le32((frag_len) << 16 )
#define CESA_SA_DESC_MAC_FRAG_LEN_MSK cpu_to_le32(GENMASK(31 , 16 ))
#define CESA_SA_DESC_MAC_IV(offset) \
cpu_to_le32((CESA_SA_MAC_IIV_SRAM_OFFSET + (offset)) | \
((CESA_SA_MAC_OIV_SRAM_OFFSET + (offset)) << 16 ))
#define CESA_SA_SRAM_SIZE 2048
#define CESA_SA_SRAM_PAYLOAD_SIZE (cesa_dev->sram_size - \
CESA_SA_DATA_SRAM_OFFSET)
#define CESA_SA_DEFAULT_SRAM_SIZE 2048
#define CESA_SA_MIN_SRAM_SIZE 1024
#define CESA_SA_SRAM_MSK (2048 - 1 )
#define CESA_MAX_HASH_BLOCK_SIZE 64
#define CESA_HASH_BLOCK_SIZE_MSK (CESA_MAX_HASH_BLOCK_SIZE - 1 )
/**
* struct mv_cesa_sec_accel_desc - security accelerator descriptor
* @ config : engine config
* @ enc_p : input and output data pointers for a cipher operation
* @ enc_len : cipher operation length
* @ enc_key_p : cipher key pointer
* @ enc_iv : cipher IV pointers
* @ mac_src_p : input pointer and total hash length
* @ mac_digest : digest pointer and hash operation length
* @ mac_iv : hmac IV pointers
*
* Structure passed to the CESA engine to describe the crypto operation
* to be executed .
*/
struct mv_cesa_sec_accel_desc {
__le32 config;
__le32 enc_p;
__le32 enc_len;
__le32 enc_key_p;
__le32 enc_iv;
__le32 mac_src_p;
__le32 mac_digest;
__le32 mac_iv;
};
/**
* struct mv_cesa_skcipher_op_ctx - cipher operation context
* @ key : cipher key
* @ iv : cipher IV
*
* Context associated to a cipher operation .
*/
struct mv_cesa_skcipher_op_ctx {
__le32 key[8 ];
u32 iv[4 ];
};
/**
* struct mv_cesa_hash_op_ctx - hash or hmac operation context
* @ key : cipher key
* @ iv : cipher IV
*
* Context associated to an hash or hmac operation .
*/
struct mv_cesa_hash_op_ctx {
u32 iv[16 ];
__le32 hash[8 ];
};
/**
* struct mv_cesa_op_ctx - crypto operation context
* @ desc : CESA descriptor
* @ ctx : context associated to the crypto operation
*
* Context associated to a crypto operation .
*/
struct mv_cesa_op_ctx {
struct mv_cesa_sec_accel_desc desc;
union {
struct mv_cesa_skcipher_op_ctx skcipher;
struct mv_cesa_hash_op_ctx hash;
} ctx;
};
/* TDMA descriptor flags */
#define CESA_TDMA_DST_IN_SRAM BIT(31 )
#define CESA_TDMA_SRC_IN_SRAM BIT(30 )
#define CESA_TDMA_END_OF_REQ BIT(29 )
#define CESA_TDMA_BREAK_CHAIN BIT(28 )
#define CESA_TDMA_SET_STATE BIT(27 )
#define CESA_TDMA_TYPE_MSK GENMASK(26 , 0 )
#define CESA_TDMA_DUMMY 0
#define CESA_TDMA_DATA 1
#define CESA_TDMA_OP 2
#define CESA_TDMA_RESULT 3
/**
* struct mv_cesa_tdma_desc - TDMA descriptor
* @ byte_cnt : number of bytes to transfer
* @ src : DMA address of the source
* @ dst : DMA address of the destination
* @ next_dma : DMA address of the next TDMA descriptor
* @ cur_dma : DMA address of this TDMA descriptor
* @ next : pointer to the next TDMA descriptor
* @ op : CESA operation attached to this TDMA descriptor
* @ data : raw data attached to this TDMA descriptor
* @ flags : flags describing the TDMA transfer . See the
* " TDMA descriptor flags " section above
*
* TDMA descriptor used to create a transfer chain describing a crypto
* operation .
*/
struct mv_cesa_tdma_desc {
__le32 byte_cnt;
union {
__le32 src;
u32 src_dma;
};
union {
__le32 dst;
u32 dst_dma;
};
__le32 next_dma;
/* Software state */
dma_addr_t cur_dma;
struct mv_cesa_tdma_desc *next;
union {
struct mv_cesa_op_ctx *op;
void *data;
};
u32 flags;
};
/**
* struct mv_cesa_sg_dma_iter - scatter - gather iterator
* @ dir : transfer direction
* @ sg : scatter list
* @ offset : current position in the scatter list
* @ op_offset : current position in the crypto operation
*
* Iterator used to iterate over a scatterlist while creating a TDMA chain for
* a crypto operation .
*/
struct mv_cesa_sg_dma_iter {
enum dma_data_direction dir;
struct scatterlist *sg;
unsigned int offset;
unsigned int op_offset;
};
/**
* struct mv_cesa_dma_iter - crypto operation iterator
* @ len : the crypto operation length
* @ offset : current position in the crypto operation
* @ op_len : sub - operation length ( the crypto engine can only act on 2 kb
* chunks )
*
* Iterator used to create a TDMA chain for a given crypto operation .
*/
struct mv_cesa_dma_iter {
unsigned int len;
unsigned int offset;
unsigned int op_len;
};
/**
* struct mv_cesa_tdma_chain - TDMA chain
* @ first : first entry in the TDMA chain
* @ last : last entry in the TDMA chain
*
* Stores a TDMA chain for a specific crypto operation .
*/
struct mv_cesa_tdma_chain {
struct mv_cesa_tdma_desc *first;
struct mv_cesa_tdma_desc *last;
};
struct mv_cesa_engine;
/**
* struct mv_cesa_caps - CESA device capabilities
* @ engines : number of engines
* @ has_tdma : whether this device has a TDMA block
* @ cipher_algs : supported cipher algorithms
* @ ncipher_algs : number of supported cipher algorithms
* @ ahash_algs : supported hash algorithms
* @ nahash_algs : number of supported hash algorithms
*
* Structure used to describe CESA device capabilities .
*/
struct mv_cesa_caps {
int nengines;
bool has_tdma;
struct skcipher_alg **cipher_algs;
int ncipher_algs;
struct ahash_alg **ahash_algs;
int nahash_algs;
};
/**
* struct mv_cesa_dev_dma - DMA pools
* @ tdma_desc_pool : TDMA desc pool
* @ op_pool : crypto operation pool
* @ cache_pool : data cache pool ( used by hash implementation when the
* hash request is smaller than the hash block size )
* @ padding_pool : padding pool ( used by hash implementation when hardware
* padding cannot be used )
*
* Structure containing the different DMA pools used by this driver .
*/
struct mv_cesa_dev_dma {
struct dma_pool *tdma_desc_pool;
struct dma_pool *op_pool;
struct dma_pool *cache_pool;
struct dma_pool *padding_pool;
};
/**
* struct mv_cesa_dev - CESA device
* @ caps : device capabilities
* @ regs : device registers
* @ sram_size : usable SRAM size
* @ lock : device lock
* @ engines : array of engines
* @ dma : dma pools
*
* Structure storing CESA device information .
*/
struct mv_cesa_dev {
const struct mv_cesa_caps *caps;
void __iomem *regs;
struct device *dev;
unsigned int sram_size;
spinlock_t lock;
struct mv_cesa_engine *engines;
struct mv_cesa_dev_dma *dma;
};
/**
* struct mv_cesa_engine - CESA engine
* @ id : engine id
* @ regs : engine registers
* @ sram : SRAM memory region
* @ sram_pool : SRAM memory region from pool
* @ sram_dma : DMA address of the SRAM memory region
* @ lock : engine lock
* @ req : current crypto request
* @ clk : engine clk
* @ zclk : engine zclk
* @ max_req_len : maximum chunk length ( useful to create the TDMA chain )
* @ int_mask : interrupt mask cache
* @ pool : memory pool pointing to the memory region reserved in
* SRAM
* @ queue : fifo of the pending crypto requests
* @ load : engine load counter , useful for load balancing
* @ chain_hw : list of the current tdma descriptors being processed
* by the hardware .
* @ chain_sw : list of the current tdma descriptors that will be
* submitted to the hardware .
* @ complete_queue : fifo of the processed requests by the engine
*
* Structure storing CESA engine information .
*/
struct mv_cesa_engine {
int id;
void __iomem *regs;
union {
void __iomem *sram;
void *sram_pool;
};
dma_addr_t sram_dma;
spinlock_t lock;
struct crypto_async_request *req;
struct clk *clk;
struct clk *zclk;
size_t max_req_len;
u32 int_mask;
struct gen_pool *pool;
struct crypto_queue queue;
atomic_t load;
struct mv_cesa_tdma_chain chain_hw;
struct mv_cesa_tdma_chain chain_sw;
struct list_head complete_queue;
int irq;
};
/**
* struct mv_cesa_req_ops - CESA request operations
* @ process : process a request chunk result ( should return 0 if the
* operation , - EINPROGRESS if it needs more steps or an error
* code )
* @ step : launch the crypto operation on the next chunk
* @ cleanup : cleanup the crypto request ( release associated data )
* @ complete : complete the request , i . e copy result or context from sram when
* needed .
*/
struct mv_cesa_req_ops {
int (*process)(struct crypto_async_request *req, u32 status);
void (*step)(struct crypto_async_request *req);
void (*cleanup)(struct crypto_async_request *req);
void (*complete)(struct crypto_async_request *req);
};
/**
* struct mv_cesa_ctx - CESA operation context
* @ ops : crypto operations
*
* Base context structure inherited by operation specific ones .
*/
struct mv_cesa_ctx {
const struct mv_cesa_req_ops *ops;
};
/**
* struct mv_cesa_hash_ctx - CESA hash operation context
* @ base : base context structure
*
* Hash context structure .
*/
struct mv_cesa_hash_ctx {
struct mv_cesa_ctx base;
};
/**
* struct mv_cesa_hash_ctx - CESA hmac operation context
* @ base : base context structure
* @ iv : initialization vectors
*
* HMAC context structure .
*/
struct mv_cesa_hmac_ctx {
struct mv_cesa_ctx base;
__be32 iv[16 ];
};
/**
* enum mv_cesa_req_type - request type definitions
* @ CESA_STD_REQ : standard request
* @ CESA_DMA_REQ : DMA request
*/
enum mv_cesa_req_type {
CESA_STD_REQ,
CESA_DMA_REQ,
};
/**
* struct mv_cesa_req - CESA request
* @ engine : engine associated with this request
* @ chain : list of tdma descriptors associated with this request
*/
struct mv_cesa_req {
struct mv_cesa_engine *engine;
struct mv_cesa_tdma_chain chain;
};
/**
* struct mv_cesa_sg_std_iter - CESA scatter - gather iterator for standard
* requests
* @ iter : sg mapping iterator
* @ offset : current offset in the SG entry mapped in memory
*/
struct mv_cesa_sg_std_iter {
struct sg_mapping_iter iter;
unsigned int offset;
};
/**
* struct mv_cesa_skcipher_std_req - cipher standard request
* @ op : operation context
* @ offset : current operation offset
* @ size : size of the crypto operation
*/
struct mv_cesa_skcipher_std_req {
struct mv_cesa_op_ctx op;
unsigned int offset;
unsigned int size;
bool skip_ctx;
};
/**
* struct mv_cesa_skcipher_req - cipher request
* @ req : type specific request information
* @ src_nents : number of entries in the src sg list
* @ dst_nents : number of entries in the dest sg list
*/
struct mv_cesa_skcipher_req {
struct mv_cesa_req base;
struct mv_cesa_skcipher_std_req std;
int src_nents;
int dst_nents;
};
/**
* struct mv_cesa_ahash_std_req - standard hash request
* @ offset : current operation offset
*/
struct mv_cesa_ahash_std_req {
unsigned int offset;
};
/**
* struct mv_cesa_ahash_dma_req - DMA hash request
* @ padding : padding buffer
* @ padding_dma : DMA address of the padding buffer
* @ cache_dma : DMA address of the cache buffer
*/
struct mv_cesa_ahash_dma_req {
u8 *padding;
dma_addr_t padding_dma;
u8 *cache;
dma_addr_t cache_dma;
};
/**
* struct mv_cesa_ahash_req - hash request
* @ req : type specific request information
* @ cache : cache buffer
* @ cache_ptr : write pointer in the cache buffer
* @ len : hash total length
* @ src_nents : number of entries in the scatterlist
* @ last_req : define whether the current operation is the last one
* or not
* @ state : hash state
*/
struct mv_cesa_ahash_req {
struct mv_cesa_req base;
union {
struct mv_cesa_ahash_dma_req dma;
struct mv_cesa_ahash_std_req std;
} req;
struct mv_cesa_op_ctx op_tmpl;
u8 cache[CESA_MAX_HASH_BLOCK_SIZE];
unsigned int cache_ptr;
u64 len;
int src_nents;
bool last_req;
bool algo_le;
u32 state[8 ];
};
/* CESA functions */
extern struct mv_cesa_dev *cesa_dev;
static inline void
mv_cesa_engine_enqueue_complete_request(struct mv_cesa_engine *engine,
struct crypto_async_request *req)
{
list_add_tail(&req->list, &engine->complete_queue);
}
static inline struct crypto_async_request *
mv_cesa_engine_dequeue_complete_request(struct mv_cesa_engine *engine)
{
struct crypto_async_request *req;
req = list_first_entry_or_null(&engine->complete_queue,
struct crypto_async_request,
list);
if (req)
list_del(&req->list);
return req;
}
static inline enum mv_cesa_req_type
mv_cesa_req_get_type(struct mv_cesa_req *req)
{
return req->chain.first ? CESA_DMA_REQ : CESA_STD_REQ;
}
static inline void mv_cesa_update_op_cfg(struct mv_cesa_op_ctx *op,
u32 cfg, u32 mask)
{
op->desc.config &= cpu_to_le32(~mask);
op->desc.config |= cpu_to_le32(cfg);
}
static inline u32 mv_cesa_get_op_cfg(const struct mv_cesa_op_ctx *op)
{
return le32_to_cpu(op->desc.config);
}
static inline void mv_cesa_set_op_cfg(struct mv_cesa_op_ctx *op, u32 cfg)
{
op->desc.config = cpu_to_le32(cfg);
}
static inline void mv_cesa_adjust_op(struct mv_cesa_engine *engine,
struct mv_cesa_op_ctx *op)
{
u32 offset = engine->sram_dma & CESA_SA_SRAM_MSK;
op->desc.enc_p = CESA_SA_DESC_CRYPT_DATA(offset);
op->desc.enc_key_p = CESA_SA_DESC_CRYPT_KEY(offset);
op->desc.enc_iv = CESA_SA_DESC_CRYPT_IV(offset);
op->desc.mac_src_p &= ~CESA_SA_DESC_MAC_DATA_MSK;
op->desc.mac_src_p |= CESA_SA_DESC_MAC_DATA(offset);
op->desc.mac_digest &= ~CESA_SA_DESC_MAC_DIGEST_MSK;
op->desc.mac_digest |= CESA_SA_DESC_MAC_DIGEST(offset);
op->desc.mac_iv = CESA_SA_DESC_MAC_IV(offset);
}
static inline void mv_cesa_set_crypt_op_len(struct mv_cesa_op_ctx *op, int len)
{
op->desc.enc_len = cpu_to_le32(len);
}
static inline void mv_cesa_set_mac_op_total_len(struct mv_cesa_op_ctx *op,
int len)
{
op->desc.mac_src_p &= ~CESA_SA_DESC_MAC_TOTAL_LEN_MSK;
op->desc.mac_src_p |= CESA_SA_DESC_MAC_TOTAL_LEN(len);
}
static inline void mv_cesa_set_mac_op_frag_len(struct mv_cesa_op_ctx *op,
int len)
{
op->desc.mac_digest &= ~CESA_SA_DESC_MAC_FRAG_LEN_MSK;
op->desc.mac_digest |= CESA_SA_DESC_MAC_FRAG_LEN(len);
}
static inline void mv_cesa_set_int_mask(struct mv_cesa_engine *engine,
u32 int_mask)
{
if (int_mask == engine->int_mask)
return ;
writel_relaxed(int_mask, engine->regs + CESA_SA_INT_MSK);
engine->int_mask = int_mask;
}
static inline u32 mv_cesa_get_int_mask(struct mv_cesa_engine *engine)
{
return engine->int_mask;
}
static inline bool mv_cesa_mac_op_is_first_frag(const struct mv_cesa_op_ctx *op)
{
return (mv_cesa_get_op_cfg(op) & CESA_SA_DESC_CFG_FRAG_MSK) ==
CESA_SA_DESC_CFG_FIRST_FRAG;
}
int mv_cesa_queue_req(struct crypto_async_request *req,
struct mv_cesa_req *creq);
struct crypto_async_request *
mv_cesa_dequeue_req_locked(struct mv_cesa_engine *engine,
struct crypto_async_request **backlog);
static inline struct mv_cesa_engine *mv_cesa_select_engine(int weight)
{
int i;
u32 min_load = U32_MAX;
struct mv_cesa_engine *selected = NULL;
for (i = 0 ; i < cesa_dev->caps->nengines; i++) {
struct mv_cesa_engine *engine = cesa_dev->engines + i;
u32 load = atomic_read(&engine->load);
if (load < min_load) {
min_load = load;
selected = engine;
}
}
atomic_add(weight, &selected->load);
return selected;
}
/*
* Helper function that indicates whether a crypto request needs to be
* cleaned up or not after being enqueued using mv_cesa_queue_req ( ) .
*/
static inline int mv_cesa_req_needs_cleanup(struct crypto_async_request *req,
int ret)
{
/*
* The queue still had some space , the request was queued
* normally , so there ' s no need to clean it up .
*/
if (ret == -EINPROGRESS)
return false ;
/*
* The queue had not space left , but since the request is
* flagged with CRYPTO_TFM_REQ_MAY_BACKLOG , it was added to
* the backlog and will be processed later . There ' s no need to
* clean it up .
*/
if (ret == -EBUSY)
return false ;
/* Request wasn't queued, we need to clean it up */
return true ;
}
/* TDMA functions */
static inline void mv_cesa_req_dma_iter_init(struct mv_cesa_dma_iter *iter,
unsigned int len)
{
iter->len = len;
iter->op_len = min(len, CESA_SA_SRAM_PAYLOAD_SIZE);
iter->offset = 0 ;
}
static inline void mv_cesa_sg_dma_iter_init(struct mv_cesa_sg_dma_iter *iter,
struct scatterlist *sg,
enum dma_data_direction dir)
{
iter->op_offset = 0 ;
iter->offset = 0 ;
iter->sg = sg;
iter->dir = dir;
}
static inline unsigned int
mv_cesa_req_dma_iter_transfer_len(struct mv_cesa_dma_iter *iter,
struct mv_cesa_sg_dma_iter *sgiter)
{
return min(iter->op_len - sgiter->op_offset,
sg_dma_len(sgiter->sg) - sgiter->offset);
}
bool mv_cesa_req_dma_iter_next_transfer(struct mv_cesa_dma_iter *chain,
struct mv_cesa_sg_dma_iter *sgiter,
unsigned int len);
static inline bool mv_cesa_req_dma_iter_next_op(struct mv_cesa_dma_iter *iter)
{
iter->offset += iter->op_len;
iter->op_len = min(iter->len - iter->offset,
CESA_SA_SRAM_PAYLOAD_SIZE);
return iter->op_len;
}
void mv_cesa_dma_step(struct mv_cesa_req *dreq);
static inline int mv_cesa_dma_process(struct mv_cesa_req *dreq,
u32 status)
{
if (!(status & CESA_SA_INT_ACC0_IDMA_DONE))
return -EINPROGRESS;
if (status & CESA_SA_INT_IDMA_OWN_ERR)
return -EINVAL;
return 0 ;
}
void mv_cesa_dma_prepare(struct mv_cesa_req *dreq,
struct mv_cesa_engine *engine);
void mv_cesa_dma_cleanup(struct mv_cesa_req *dreq);
void mv_cesa_tdma_chain(struct mv_cesa_engine *engine,
struct mv_cesa_req *dreq);
int mv_cesa_tdma_process(struct mv_cesa_engine *engine, u32 status);
static inline void
mv_cesa_tdma_desc_iter_init(struct mv_cesa_tdma_chain *chain)
{
memset(chain, 0 , sizeof (*chain));
}
int mv_cesa_dma_add_result_op(struct mv_cesa_tdma_chain *chain, dma_addr_t src,
u32 size, u32 flags, gfp_t gfp_flags);
struct mv_cesa_op_ctx *mv_cesa_dma_add_op(struct mv_cesa_tdma_chain *chain,
const struct mv_cesa_op_ctx *op_templ,
bool skip_ctx,
gfp_t flags);
int mv_cesa_dma_add_data_transfer(struct mv_cesa_tdma_chain *chain,
dma_addr_t dst, dma_addr_t src, u32 size,
u32 flags, gfp_t gfp_flags);
int mv_cesa_dma_add_dummy_launch(struct mv_cesa_tdma_chain *chain, gfp_t flags);
int mv_cesa_dma_add_dummy_end(struct mv_cesa_tdma_chain *chain, gfp_t flags);
int mv_cesa_dma_add_op_transfers(struct mv_cesa_tdma_chain *chain,
struct mv_cesa_dma_iter *dma_iter,
struct mv_cesa_sg_dma_iter *sgiter,
gfp_t gfp_flags);
size_t mv_cesa_sg_copy(struct mv_cesa_engine *engine,
struct scatterlist *sgl, unsigned int nents,
unsigned int sram_off, size_t buflen, off_t skip,
bool to_sram);
static inline size_t mv_cesa_sg_copy_to_sram(struct mv_cesa_engine *engine,
struct scatterlist *sgl,
unsigned int nents,
unsigned int sram_off,
size_t buflen, off_t skip)
{
return mv_cesa_sg_copy(engine, sgl, nents, sram_off, buflen, skip,
true );
}
static inline size_t mv_cesa_sg_copy_from_sram(struct mv_cesa_engine *engine,
struct scatterlist *sgl,
unsigned int nents,
unsigned int sram_off,
size_t buflen, off_t skip)
{
return mv_cesa_sg_copy(engine, sgl, nents, sram_off, buflen, skip,
false );
}
/* Algorithm definitions */
extern struct ahash_alg mv_md5_alg;
extern struct ahash_alg mv_sha1_alg;
extern struct ahash_alg mv_sha256_alg;
extern struct ahash_alg mv_ahmac_md5_alg;
extern struct ahash_alg mv_ahmac_sha1_alg;
extern struct ahash_alg mv_ahmac_sha256_alg;
extern struct skcipher_alg mv_cesa_ecb_des_alg;
extern struct skcipher_alg mv_cesa_cbc_des_alg;
extern struct skcipher_alg mv_cesa_ecb_des3_ede_alg;
extern struct skcipher_alg mv_cesa_cbc_des3_ede_alg;
extern struct skcipher_alg mv_cesa_ecb_aes_alg;
extern struct skcipher_alg mv_cesa_cbc_aes_alg;
#endif /* __MARVELL_CESA_H__ */
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Dauer der Verarbeitung: 0.18 Sekunden
(vorverarbeitet am 2026-10-11)
¤
*© Formatika GbR, Deutschland
2026-10-11
Neuigkeiten
Aktuelles
Motto des Tages
Open Source Software
Jenseits des Üblichen ....
Besucherstatistik
Statistik
#Sources=1127926
#Domains=2039723