242 lines
7.4 KiB
C
242 lines
7.4 KiB
C
#ifndef __QCEDEV__H
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#define __QCEDEV__H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#define QCEDEV_MAX_SHA_BLOCK_SIZE 64
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#define QCEDEV_MAX_BEARER 31
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#define QCEDEV_MAX_KEY_SIZE 64
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#define QCEDEV_MAX_IV_SIZE 32
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#define QCEDEV_MAX_BUFFERS 16
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#define QCEDEV_MAX_SHA_DIGEST 32
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#define QCEDEV_USE_PMEM 1
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#define QCEDEV_NO_PMEM 0
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#define QCEDEV_AES_KEY_128 16
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#define QCEDEV_AES_KEY_192 24
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#define QCEDEV_AES_KEY_256 32
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/**
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*qcedev_oper_enum: Operation types
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* @QCEDEV_OPER_ENC: Encrypt
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* @QCEDEV_OPER_DEC: Decrypt
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* @QCEDEV_OPER_ENC_NO_KEY: Encrypt. Do not need key to be specified by
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* user. Key already set by an external processor.
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* @QCEDEV_OPER_DEC_NO_KEY: Decrypt. Do not need the key to be specified by
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* user. Key already set by an external processor.
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*/
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enum qcedev_oper_enum {
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QCEDEV_OPER_DEC = 0,
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QCEDEV_OPER_ENC = 1,
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QCEDEV_OPER_DEC_NO_KEY = 2,
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QCEDEV_OPER_ENC_NO_KEY = 3,
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QCEDEV_OPER_LAST
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};
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/**
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*qcedev_oper_enum: Cipher algorithm types
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* @QCEDEV_ALG_DES: DES
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* @QCEDEV_ALG_3DES: 3DES
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* @QCEDEV_ALG_AES: AES
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*/
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enum qcedev_cipher_alg_enum {
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QCEDEV_ALG_DES = 0,
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QCEDEV_ALG_3DES = 1,
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QCEDEV_ALG_AES = 2,
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QCEDEV_ALG_LAST
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};
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/**
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*qcedev_cipher_mode_enum : AES mode
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* @QCEDEV_AES_MODE_CBC: CBC
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* @QCEDEV_AES_MODE_ECB: ECB
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* @QCEDEV_AES_MODE_CTR: CTR
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* @QCEDEV_AES_MODE_XTS: XTS
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* @QCEDEV_AES_MODE_CCM: CCM
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* @QCEDEV_DES_MODE_CBC: CBC
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* @QCEDEV_DES_MODE_ECB: ECB
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*/
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enum qcedev_cipher_mode_enum {
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QCEDEV_AES_MODE_CBC = 0,
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QCEDEV_AES_MODE_ECB = 1,
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QCEDEV_AES_MODE_CTR = 2,
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QCEDEV_AES_MODE_XTS = 3,
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QCEDEV_AES_MODE_CCM = 4,
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QCEDEV_DES_MODE_CBC = 5,
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QCEDEV_DES_MODE_ECB = 6,
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QCEDEV_AES_DES_MODE_LAST
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};
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/**
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*enum qcedev_sha_alg_enum : Secure Hashing Algorithm
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* @QCEDEV_ALG_SHA1: Digest returned: 20 bytes (160 bits)
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* @QCEDEV_ALG_SHA256: Digest returned: 32 bytes (256 bit)
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* @QCEDEV_ALG_SHA1_HMAC: HMAC returned 20 bytes (160 bits)
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* @QCEDEV_ALG_SHA256_HMAC: HMAC returned 32 bytes (256 bit)
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* @QCEDEV_ALG_AES_CMAC: Configurable MAC size
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*/
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enum qcedev_sha_alg_enum {
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QCEDEV_ALG_SHA1 = 0,
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QCEDEV_ALG_SHA256 = 1,
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QCEDEV_ALG_SHA1_HMAC = 2,
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QCEDEV_ALG_SHA256_HMAC = 3,
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QCEDEV_ALG_AES_CMAC = 4,
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QCEDEV_ALG_SHA_ALG_LAST
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};
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/**
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* struct buf_info - Buffer information
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* @offset: Offset from the base address of the buffer
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* (Used when buffer is allocated using PMEM)
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* @vaddr: Virtual buffer address pointer
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* @len: Size of the buffer
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*/
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struct buf_info {
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union {
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uint32_t offset;
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uint8_t *vaddr;
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};
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uint32_t len;
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};
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/**
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* struct qcedev_vbuf_info - Source and destination Buffer information
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* @src: Array of buf_info for input/source
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* @dst: Array of buf_info for output/destination
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*/
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struct qcedev_vbuf_info {
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struct buf_info src[QCEDEV_MAX_BUFFERS];
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struct buf_info dst[QCEDEV_MAX_BUFFERS];
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};
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/**
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* struct qcedev_pmem_info - Stores PMEM buffer information
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* @fd_src: Handle to /dev/adsp_pmem used to allocate
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* memory for input/src buffer
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* @src: Array of buf_info for input/source
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* @fd_dst: Handle to /dev/adsp_pmem used to allocate
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* memory for output/dst buffer
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* @dst: Array of buf_info for output/destination
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* @pmem_src_offset: The offset from input/src buffer
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* (allocated by PMEM)
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*/
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struct qcedev_pmem_info {
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int fd_src;
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struct buf_info src[QCEDEV_MAX_BUFFERS];
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int fd_dst;
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struct buf_info dst[QCEDEV_MAX_BUFFERS];
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};
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/**
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* struct qcedev_cipher_op_req - Holds the ciphering request information
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* @use_pmem (IN): Flag to indicate if buffer source is PMEM
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* QCEDEV_USE_PMEM/QCEDEV_NO_PMEM
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* @pmem (IN): Stores PMEM buffer information.
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* Refer struct qcedev_pmem_info
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* @vbuf (IN/OUT): Stores Source and destination Buffer information
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* Refer to struct qcedev_vbuf_info
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* @data_len (IN): Total Length of input/src and output/dst in bytes
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* @in_place_op (IN): Indicates whether the operation is inplace where
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* source == destination
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* When using PMEM allocated memory, must set this to 1
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* @enckey (IN): 128 bits of confidentiality key
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* enckey[0] bit 127-120, enckey[1] bit 119-112,..
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* enckey[15] bit 7-0
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* @encklen (IN): Length of the encryption key(set to 128 bits/16
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* bytes in the driver)
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* @iv (IN/OUT): Initialisation vector data
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* This is updated by the driver, incremented by
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* number of blocks encrypted/decrypted.
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* @ivlen (IN): Length of the IV
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* @byteoffset (IN): Offset in the Cipher BLOCK (applicable and to be set
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* for AES-128 CTR mode only)
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* @alg (IN): Type of ciphering algorithm: AES/DES/3DES
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* @mode (IN): Mode use when using AES algorithm: ECB/CBC/CTR
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* Apllicabel when using AES algorithm only
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* @op (IN): Type of operation: QCEDEV_OPER_DEC/QCEDEV_OPER_ENC or
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* QCEDEV_OPER_ENC_NO_KEY/QCEDEV_OPER_DEC_NO_KEY
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*
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*If use_pmem is set to 0, the driver assumes that memory was not allocated
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* via PMEM, and kernel will need to allocate memory and copy data from user
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* space buffer (data_src/dta_dst) and process accordingly and copy data back
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* to the user space buffer
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*
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* If use_pmem is set to 1, the driver assumes that memory was allocated via
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* PMEM.
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* The kernel driver will use the fd_src to determine the kernel virtual address
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* base that maps to the user space virtual address base for the buffer
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* allocated in user space.
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* The final input/src and output/dst buffer pointer will be determined
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* by adding the offsets to the kernel virtual addr.
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*
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* If use of hardware key is supported in the target, user can configure the
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* key paramters (encklen, enckey) to use the hardware key.
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* In order to use the hardware key, set encklen to 0 and set the enckey
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* data array to 0.
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*/
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struct qcedev_cipher_op_req {
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uint8_t use_pmem;
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union {
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struct qcedev_pmem_info pmem;
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struct qcedev_vbuf_info vbuf;
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};
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uint32_t entries;
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uint32_t data_len;
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uint8_t in_place_op;
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uint8_t enckey[QCEDEV_MAX_KEY_SIZE];
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uint32_t encklen;
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uint8_t iv[QCEDEV_MAX_IV_SIZE];
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uint32_t ivlen;
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uint32_t byteoffset;
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enum qcedev_cipher_alg_enum alg;
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enum qcedev_cipher_mode_enum mode;
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enum qcedev_oper_enum op;
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};
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/**
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* struct qcedev_sha_op_req - Holds the hashing request information
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* @data (IN): Array of pointers to the data to be hashed
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* @entries (IN): Number of buf_info entries in the data array
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* @data_len (IN): Length of data to be hashed
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* @digest (IN/OUT): Returns the hashed data information
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* @diglen (OUT): Size of the hashed/digest data
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* @authkey (IN): Pointer to authentication key for HMAC
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* @authklen (IN): Size of the authentication key
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* @alg (IN): Secure Hash algorithm
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*/
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struct qcedev_sha_op_req {
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struct buf_info data[QCEDEV_MAX_BUFFERS];
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uint32_t entries;
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uint32_t data_len;
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uint8_t digest[QCEDEV_MAX_SHA_DIGEST];
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uint32_t diglen;
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uint8_t *authkey;
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uint32_t authklen;
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enum qcedev_sha_alg_enum alg;
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};
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#define QCEDEV_IOC_MAGIC 0x87
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#define QCEDEV_IOCTL_ENC_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 1, struct qcedev_cipher_op_req)
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#define QCEDEV_IOCTL_DEC_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 2, struct qcedev_cipher_op_req)
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#define QCEDEV_IOCTL_SHA_INIT_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 3, struct qcedev_sha_op_req)
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#define QCEDEV_IOCTL_SHA_UPDATE_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 4, struct qcedev_sha_op_req)
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#define QCEDEV_IOCTL_SHA_FINAL_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 5, struct qcedev_sha_op_req)
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#define QCEDEV_IOCTL_GET_SHA_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 6, struct qcedev_sha_op_req)
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#define QCEDEV_IOCTL_LOCK_CE \
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_IO(QCEDEV_IOC_MAGIC, 7)
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#define QCEDEV_IOCTL_UNLOCK_CE \
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_IO(QCEDEV_IOC_MAGIC, 8)
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#define QCEDEV_IOCTL_GET_CMAC_REQ \
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_IOWR(QCEDEV_IOC_MAGIC, 9, struct qcedev_cipher_op_req)
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#endif /* _QCEDEV__H */
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