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linux/drivers/crypto/ccree/cc_hw_queue_defs.h
Nathan Chancellor 18e732b803 crypto: ccree - avoid implicit enum conversion 
Clang warns when one enumerated type is implicitly converted to another
and this happens in several locations in this driver, ultimately related
to the set_cipher_{mode,config0} functions. set_cipher_mode expects a mode
of type drv_cipher_mode and set_cipher_config0 expects a mode of type
drv_crypto_direction.

drivers/crypto/ccree/cc_ivgen.c:58:35: warning: implicit conversion from
enumeration type 'enum cc_desc_direction' to different enumeration type
'enum drv_crypto_direction' [-Wenum-conversion]
        set_cipher_config0(&iv_seq[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);

drivers/crypto/ccree/cc_hash.c:99:28: warning: implicit conversion from
enumeration type 'enum cc_hash_conf_pad' to different enumeration type
'enum drv_crypto_direction' [-Wenum-conversion]
                set_cipher_config0(desc, HASH_DIGEST_RESULT_LITTLE_ENDIAN);

drivers/crypto/ccree/cc_aead.c:1643:30: warning: implicit conversion
from enumeration type 'enum drv_hash_hw_mode' to different enumeration
type 'enum drv_cipher_mode' [-Wenum-conversion]
        set_cipher_mode(&desc[idx], DRV_HASH_HW_GHASH);

Since this fundamentally isn't a problem because these values just
represent simple integers for a shift operation, make it clear to Clang
that this is okay by making the mode parameter in both functions an int.

Link: https://github.com/ClangBuiltLinux/linux/issues/46
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-10-17 14:16:18 +08:00

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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
#ifndef __CC_HW_QUEUE_DEFS_H__
#define __CC_HW_QUEUE_DEFS_H__
#include <linux/types.h>
#include "cc_kernel_regs.h"
#include <linux/bitfield.h>
/******************************************************************************
* DEFINITIONS
******************************************************************************/
#define HW_DESC_SIZE_WORDS 6
/* Define max. available slots in HW queue */
#define HW_QUEUE_SLOTS_MAX 15
#define CC_REG_LOW(word, name) \
(CC_DSCRPTR_QUEUE_WORD ## word ## _ ## name ## _BIT_SHIFT)
#define CC_REG_HIGH(word, name) \
(CC_REG_LOW(word, name) + \
CC_DSCRPTR_QUEUE_WORD ## word ## _ ## name ## _BIT_SIZE - 1)
#define CC_GENMASK(word, name) \
GENMASK(CC_REG_HIGH(word, name), CC_REG_LOW(word, name))
#define WORD0_VALUE CC_GENMASK(0, VALUE)
#define WORD1_DIN_CONST_VALUE CC_GENMASK(1, DIN_CONST_VALUE)
#define WORD1_DIN_DMA_MODE CC_GENMASK(1, DIN_DMA_MODE)
#define WORD1_DIN_SIZE CC_GENMASK(1, DIN_SIZE)
#define WORD1_NOT_LAST CC_GENMASK(1, NOT_LAST)
#define WORD1_NS_BIT CC_GENMASK(1, NS_BIT)
#define WORD2_VALUE CC_GENMASK(2, VALUE)
#define WORD3_DOUT_DMA_MODE CC_GENMASK(3, DOUT_DMA_MODE)
#define WORD3_DOUT_LAST_IND CC_GENMASK(3, DOUT_LAST_IND)
#define WORD3_DOUT_SIZE CC_GENMASK(3, DOUT_SIZE)
#define WORD3_HASH_XOR_BIT CC_GENMASK(3, HASH_XOR_BIT)
#define WORD3_NS_BIT CC_GENMASK(3, NS_BIT)
#define WORD3_QUEUE_LAST_IND CC_GENMASK(3, QUEUE_LAST_IND)
#define WORD4_ACK_NEEDED CC_GENMASK(4, ACK_NEEDED)
#define WORD4_AES_SEL_N_HASH CC_GENMASK(4, AES_SEL_N_HASH)
#define WORD4_BYTES_SWAP CC_GENMASK(4, BYTES_SWAP)
#define WORD4_CIPHER_CONF0 CC_GENMASK(4, CIPHER_CONF0)
#define WORD4_CIPHER_CONF1 CC_GENMASK(4, CIPHER_CONF1)
#define WORD4_CIPHER_CONF2 CC_GENMASK(4, CIPHER_CONF2)
#define WORD4_CIPHER_DO CC_GENMASK(4, CIPHER_DO)
#define WORD4_CIPHER_MODE CC_GENMASK(4, CIPHER_MODE)
#define WORD4_CMAC_SIZE0 CC_GENMASK(4, CMAC_SIZE0)
#define WORD4_DATA_FLOW_MODE CC_GENMASK(4, DATA_FLOW_MODE)
#define WORD4_KEY_SIZE CC_GENMASK(4, KEY_SIZE)
#define WORD4_SETUP_OPERATION CC_GENMASK(4, SETUP_OPERATION)
#define WORD5_DIN_ADDR_HIGH CC_GENMASK(5, DIN_ADDR_HIGH)
#define WORD5_DOUT_ADDR_HIGH CC_GENMASK(5, DOUT_ADDR_HIGH)
/******************************************************************************
* TYPE DEFINITIONS
******************************************************************************/
struct cc_hw_desc {
union {
u32 word[HW_DESC_SIZE_WORDS];
u16 hword[HW_DESC_SIZE_WORDS * 2];
};
};
enum cc_axi_sec {
AXI_SECURE = 0,
AXI_NOT_SECURE = 1
};
enum cc_desc_direction {
DESC_DIRECTION_ILLEGAL = -1,
DESC_DIRECTION_ENCRYPT_ENCRYPT = 0,
DESC_DIRECTION_DECRYPT_DECRYPT = 1,
DESC_DIRECTION_DECRYPT_ENCRYPT = 3,
DESC_DIRECTION_END = S32_MAX,
};
enum cc_dma_mode {
DMA_MODE_NULL = -1,
NO_DMA = 0,
DMA_SRAM = 1,
DMA_DLLI = 2,
DMA_MLLI = 3,
DMA_MODE_END = S32_MAX,
};
enum cc_flow_mode {
FLOW_MODE_NULL = -1,
/* data flows */
BYPASS = 0,
DIN_AES_DOUT = 1,
AES_to_HASH = 2,
AES_and_HASH = 3,
DIN_DES_DOUT = 4,
DES_to_HASH = 5,
DES_and_HASH = 6,
DIN_HASH = 7,
DIN_HASH_and_BYPASS = 8,
AESMAC_and_BYPASS = 9,
AES_to_HASH_and_DOUT = 10,
DIN_RC4_DOUT = 11,
DES_to_HASH_and_DOUT = 12,
AES_to_AES_to_HASH_and_DOUT = 13,
AES_to_AES_to_HASH = 14,
AES_to_HASH_and_AES = 15,
DIN_AES_AESMAC = 17,
HASH_to_DOUT = 18,
/* setup flows */
S_DIN_to_AES = 32,
S_DIN_to_AES2 = 33,
S_DIN_to_DES = 34,
S_DIN_to_RC4 = 35,
S_DIN_to_HASH = 37,
S_AES_to_DOUT = 38,
S_AES2_to_DOUT = 39,
S_RC4_to_DOUT = 41,
S_DES_to_DOUT = 42,
S_HASH_to_DOUT = 43,
SET_FLOW_ID = 44,
FLOW_MODE_END = S32_MAX,
};
enum cc_setup_op {
SETUP_LOAD_NOP = 0,
SETUP_LOAD_STATE0 = 1,
SETUP_LOAD_STATE1 = 2,
SETUP_LOAD_STATE2 = 3,
SETUP_LOAD_KEY0 = 4,
SETUP_LOAD_XEX_KEY = 5,
SETUP_WRITE_STATE0 = 8,
SETUP_WRITE_STATE1 = 9,
SETUP_WRITE_STATE2 = 10,
SETUP_WRITE_STATE3 = 11,
SETUP_OP_END = S32_MAX,
};
enum cc_hash_conf_pad {
HASH_PADDING_DISABLED = 0,
HASH_PADDING_ENABLED = 1,
HASH_DIGEST_RESULT_LITTLE_ENDIAN = 2,
HASH_CONFIG1_PADDING_RESERVE32 = S32_MAX,
};
enum cc_aes_mac_selector {
AES_SK = 1,
AES_CMAC_INIT = 2,
AES_CMAC_SIZE0 = 3,
AES_MAC_END = S32_MAX,
};
#define HW_KEY_MASK_CIPHER_DO 0x3
#define HW_KEY_SHIFT_CIPHER_CFG2 2
/* HwCryptoKey[1:0] is mapped to cipher_do[1:0] */
/* HwCryptoKey[2:3] is mapped to cipher_config2[1:0] */
enum cc_hw_crypto_key {
USER_KEY = 0, /* 0x0000 */
ROOT_KEY = 1, /* 0x0001 */
PROVISIONING_KEY = 2, /* 0x0010 */ /* ==KCP */
SESSION_KEY = 3, /* 0x0011 */
RESERVED_KEY = 4, /* NA */
PLATFORM_KEY = 5, /* 0x0101 */
CUSTOMER_KEY = 6, /* 0x0110 */
KFDE0_KEY = 7, /* 0x0111 */
KFDE1_KEY = 9, /* 0x1001 */
KFDE2_KEY = 10, /* 0x1010 */
KFDE3_KEY = 11, /* 0x1011 */
END_OF_KEYS = S32_MAX,
};
enum cc_hw_aes_key_size {
AES_128_KEY = 0,
AES_192_KEY = 1,
AES_256_KEY = 2,
END_OF_AES_KEYS = S32_MAX,
};
enum cc_hash_cipher_pad {
DO_NOT_PAD = 0,
DO_PAD = 1,
HASH_CIPHER_DO_PADDING_RESERVE32 = S32_MAX,
};
/*****************************/
/* Descriptor packing macros */
/*****************************/
/*
* Init a HW descriptor struct
* @pdesc: pointer HW descriptor struct
*/
static inline void hw_desc_init(struct cc_hw_desc *pdesc)
{
memset(pdesc, 0, sizeof(struct cc_hw_desc));
}
/*
* Indicates the end of current HW descriptors flow and release the HW engines.
*
* @pdesc: pointer HW descriptor struct
*/
static inline void set_queue_last_ind_bit(struct cc_hw_desc *pdesc)
{
pdesc->word[3] |= FIELD_PREP(WORD3_QUEUE_LAST_IND, 1);
}
/*
* Set the DIN field of a HW descriptors
*
* @pdesc: pointer HW descriptor struct
* @dma_mode: dmaMode The DMA mode: NO_DMA, SRAM, DLLI, MLLI, CONSTANT
* @addr: dinAdr DIN address
* @size: Data size in bytes
* @axi_sec: AXI secure bit
*/
static inline void set_din_type(struct cc_hw_desc *pdesc,
enum cc_dma_mode dma_mode, dma_addr_t addr,
u32 size, enum cc_axi_sec axi_sec)
{
pdesc->word[0] = (u32)addr;
#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
pdesc->word[5] |= FIELD_PREP(WORD5_DIN_ADDR_HIGH, ((u16)(addr >> 32)));
#endif
pdesc->word[1] |= FIELD_PREP(WORD1_DIN_DMA_MODE, dma_mode) |
FIELD_PREP(WORD1_DIN_SIZE, size) |
FIELD_PREP(WORD1_NS_BIT, axi_sec);
}
/*
* Set the DIN field of a HW descriptors to NO DMA mode.
* Used for NOP descriptor, register patches and other special modes.
*
* @pdesc: pointer HW descriptor struct
* @addr: DIN address
* @size: Data size in bytes
*/
static inline void set_din_no_dma(struct cc_hw_desc *pdesc, u32 addr, u32 size)
{
pdesc->word[0] = addr;
pdesc->word[1] |= FIELD_PREP(WORD1_DIN_SIZE, size);
}
/*
* Set the DIN field of a HW descriptors to SRAM mode.
* Note: No need to check SRAM alignment since host requests do not use SRAM and
* adaptor will enforce alignment check.
*
* @pdesc: pointer HW descriptor struct
* @addr: DIN address
* @size Data size in bytes
*/
static inline void set_din_sram(struct cc_hw_desc *pdesc, dma_addr_t addr,
u32 size)
{
pdesc->word[0] = (u32)addr;
pdesc->word[1] |= FIELD_PREP(WORD1_DIN_SIZE, size) |
FIELD_PREP(WORD1_DIN_DMA_MODE, DMA_SRAM);
}
/*
* Set the DIN field of a HW descriptors to CONST mode
*
* @pdesc: pointer HW descriptor struct
* @val: DIN const value
* @size: Data size in bytes
*/
static inline void set_din_const(struct cc_hw_desc *pdesc, u32 val, u32 size)
{
pdesc->word[0] = val;
pdesc->word[1] |= FIELD_PREP(WORD1_DIN_CONST_VALUE, 1) |
FIELD_PREP(WORD1_DIN_DMA_MODE, DMA_SRAM) |
FIELD_PREP(WORD1_DIN_SIZE, size);
}
/*
* Set the DIN not last input data indicator
*
* @pdesc: pointer HW descriptor struct
*/
static inline void set_din_not_last_indication(struct cc_hw_desc *pdesc)
{
pdesc->word[1] |= FIELD_PREP(WORD1_NOT_LAST, 1);
}
/*
* Set the DOUT field of a HW descriptors
*
* @pdesc: pointer HW descriptor struct
* @dma_mode: The DMA mode: NO_DMA, SRAM, DLLI, MLLI, CONSTANT
* @addr: DOUT address
* @size: Data size in bytes
* @axi_sec: AXI secure bit
*/
static inline void set_dout_type(struct cc_hw_desc *pdesc,
enum cc_dma_mode dma_mode, dma_addr_t addr,
u32 size, enum cc_axi_sec axi_sec)
{
pdesc->word[2] = (u32)addr;
#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
pdesc->word[5] |= FIELD_PREP(WORD5_DOUT_ADDR_HIGH, ((u16)(addr >> 32)));
#endif
pdesc->word[3] |= FIELD_PREP(WORD3_DOUT_DMA_MODE, dma_mode) |
FIELD_PREP(WORD3_DOUT_SIZE, size) |
FIELD_PREP(WORD3_NS_BIT, axi_sec);
}
/*
* Set the DOUT field of a HW descriptors to DLLI type
* The LAST INDICATION is provided by the user
*
* @pdesc pointer HW descriptor struct
* @addr: DOUT address
* @size: Data size in bytes
* @last_ind: The last indication bit
* @axi_sec: AXI secure bit
*/
static inline void set_dout_dlli(struct cc_hw_desc *pdesc, dma_addr_t addr,
u32 size, enum cc_axi_sec axi_sec,
u32 last_ind)
{
set_dout_type(pdesc, DMA_DLLI, addr, size, axi_sec);
pdesc->word[3] |= FIELD_PREP(WORD3_DOUT_LAST_IND, last_ind);
}
/*
* Set the DOUT field of a HW descriptors to DLLI type
* The LAST INDICATION is provided by the user
*
* @pdesc: pointer HW descriptor struct
* @addr: DOUT address
* @size: Data size in bytes
* @last_ind: The last indication bit
* @axi_sec: AXI secure bit
*/
static inline void set_dout_mlli(struct cc_hw_desc *pdesc, dma_addr_t addr,
u32 size, enum cc_axi_sec axi_sec,
bool last_ind)
{
set_dout_type(pdesc, DMA_MLLI, addr, size, axi_sec);
pdesc->word[3] |= FIELD_PREP(WORD3_DOUT_LAST_IND, last_ind);
}
/*
* Set the DOUT field of a HW descriptors to NO DMA mode.
* Used for NOP descriptor, register patches and other special modes.
*
* @pdesc: pointer HW descriptor struct
* @addr: DOUT address
* @size: Data size in bytes
* @write_enable: Enables a write operation to a register
*/
static inline void set_dout_no_dma(struct cc_hw_desc *pdesc, u32 addr,
u32 size, bool write_enable)
{
pdesc->word[2] = addr;
pdesc->word[3] |= FIELD_PREP(WORD3_DOUT_SIZE, size) |
FIELD_PREP(WORD3_DOUT_LAST_IND, write_enable);
}
/*
* Set the word for the XOR operation.
*
* @pdesc: pointer HW descriptor struct
* @val: xor data value
*/
static inline void set_xor_val(struct cc_hw_desc *pdesc, u32 val)
{
pdesc->word[2] = val;
}
/*
* Sets the XOR indicator bit in the descriptor
*
* @pdesc: pointer HW descriptor struct
*/
static inline void set_xor_active(struct cc_hw_desc *pdesc)
{
pdesc->word[3] |= FIELD_PREP(WORD3_HASH_XOR_BIT, 1);
}
/*
* Select the AES engine instead of HASH engine when setting up combined mode
* with AES XCBC MAC
*
* @pdesc: pointer HW descriptor struct
*/
static inline void set_aes_not_hash_mode(struct cc_hw_desc *pdesc)
{
pdesc->word[4] |= FIELD_PREP(WORD4_AES_SEL_N_HASH, 1);
}
/*
* Set the DOUT field of a HW descriptors to SRAM mode
* Note: No need to check SRAM alignment since host requests do not use SRAM and
* adaptor will enforce alignment check.
*
* @pdesc: pointer HW descriptor struct
* @addr: DOUT address
* @size: Data size in bytes
*/
static inline void set_dout_sram(struct cc_hw_desc *pdesc, u32 addr, u32 size)
{
pdesc->word[2] = addr;
pdesc->word[3] |= FIELD_PREP(WORD3_DOUT_DMA_MODE, DMA_SRAM) |
FIELD_PREP(WORD3_DOUT_SIZE, size);
}
/*
* Sets the data unit size for XEX mode in data_out_addr[15:0]
*
* @pdesc: pDesc pointer HW descriptor struct
* @size: data unit size for XEX mode
*/
static inline void set_xex_data_unit_size(struct cc_hw_desc *pdesc, u32 size)
{
pdesc->word[2] = size;
}
/*
* Set the number of rounds for Multi2 in data_out_addr[15:0]
*
* @pdesc: pointer HW descriptor struct
* @num: number of rounds for Multi2
*/
static inline void set_multi2_num_rounds(struct cc_hw_desc *pdesc, u32 num)
{
pdesc->word[2] = num;
}
/*
* Set the flow mode.
*
* @pdesc: pointer HW descriptor struct
* @mode: Any one of the modes defined in [CC7x-DESC]
*/
static inline void set_flow_mode(struct cc_hw_desc *pdesc,
enum cc_flow_mode mode)
{
pdesc->word[4] |= FIELD_PREP(WORD4_DATA_FLOW_MODE, mode);
}
/*
* Set the cipher mode.
*
* @pdesc: pointer HW descriptor struct
* @mode: Any one of the modes defined in [CC7x-DESC]
*/
static inline void set_cipher_mode(struct cc_hw_desc *pdesc, int mode)
{
pdesc->word[4] |= FIELD_PREP(WORD4_CIPHER_MODE, mode);
}
/*
* Set the cipher configuration fields.
*
* @pdesc: pointer HW descriptor struct
* @mode: Any one of the modes defined in [CC7x-DESC]
*/
static inline void set_cipher_config0(struct cc_hw_desc *pdesc, int mode)
{
pdesc->word[4] |= FIELD_PREP(WORD4_CIPHER_CONF0, mode);
}
/*
* Set the cipher configuration fields.
*
* @pdesc: pointer HW descriptor struct
* @config: Any one of the modes defined in [CC7x-DESC]
*/
static inline void set_cipher_config1(struct cc_hw_desc *pdesc,
enum cc_hash_conf_pad config)
{
pdesc->word[4] |= FIELD_PREP(WORD4_CIPHER_CONF1, config);
}
/*
* Set HW key configuration fields.
*
* @pdesc: pointer HW descriptor struct
* @hw_key: The HW key slot asdefined in enum cc_hw_crypto_key
*/
static inline void set_hw_crypto_key(struct cc_hw_desc *pdesc,
enum cc_hw_crypto_key hw_key)
{
pdesc->word[4] |= FIELD_PREP(WORD4_CIPHER_DO,
(hw_key & HW_KEY_MASK_CIPHER_DO)) |
FIELD_PREP(WORD4_CIPHER_CONF2,
(hw_key >> HW_KEY_SHIFT_CIPHER_CFG2));
}
/*
* Set byte order of all setup-finalize descriptors.
*
* @pdesc: pointer HW descriptor struct
* @config: Any one of the modes defined in [CC7x-DESC]
*/
static inline void set_bytes_swap(struct cc_hw_desc *pdesc, bool config)
{
pdesc->word[4] |= FIELD_PREP(WORD4_BYTES_SWAP, config);
}
/*
* Set CMAC_SIZE0 mode.
*
* @pdesc: pointer HW descriptor struct
*/
static inline void set_cmac_size0_mode(struct cc_hw_desc *pdesc)
{
pdesc->word[4] |= FIELD_PREP(WORD4_CMAC_SIZE0, 1);
}
/*
* Set key size descriptor field.
*
* @pdesc: pointer HW descriptor struct
* @size: key size in bytes (NOT size code)
*/
static inline void set_key_size(struct cc_hw_desc *pdesc, u32 size)
{
pdesc->word[4] |= FIELD_PREP(WORD4_KEY_SIZE, size);
}
/*
* Set AES key size.
*
* @pdesc: pointer HW descriptor struct
* @size: key size in bytes (NOT size code)
*/
static inline void set_key_size_aes(struct cc_hw_desc *pdesc, u32 size)
{
set_key_size(pdesc, ((size >> 3) - 2));
}
/*
* Set DES key size.
*
* @pdesc: pointer HW descriptor struct
* @size: key size in bytes (NOT size code)
*/
static inline void set_key_size_des(struct cc_hw_desc *pdesc, u32 size)
{
set_key_size(pdesc, ((size >> 3) - 1));
}
/*
* Set the descriptor setup mode
*
* @pdesc: pointer HW descriptor struct
* @mode: Any one of the setup modes defined in [CC7x-DESC]
*/
static inline void set_setup_mode(struct cc_hw_desc *pdesc,
enum cc_setup_op mode)
{
pdesc->word[4] |= FIELD_PREP(WORD4_SETUP_OPERATION, mode);
}
/*
* Set the descriptor cipher DO
*
* @pdesc: pointer HW descriptor struct
* @config: Any one of the cipher do defined in [CC7x-DESC]
*/
static inline void set_cipher_do(struct cc_hw_desc *pdesc,
enum cc_hash_cipher_pad config)
{
pdesc->word[4] |= FIELD_PREP(WORD4_CIPHER_DO,
(config & HW_KEY_MASK_CIPHER_DO));
}
#endif /*__CC_HW_QUEUE_DEFS_H__*/
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