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gerrit-public.fairphone.software / kernel / msm / d21893abf5951ea16dd3680563d3e493d48403c8 / . / arch / arm / include / asm / smcmod.h
blob: 06918c40d406bc0ae90917e612edf80d5b38df44 [file] [log] [blame]
Rohit Vaswani5fd759e2012-11-07 07:05:08 -0800[diff] [blame]1/* Qualcomm SMC Module API */
2
3#ifndef __SMCMOD_H_
4#define __SMCMOD_H_
5
6#include <linux/types.h>
7#include <linux/ioctl.h>
8
9#define SMCMOD_DEV "smcmod"
10
11#define SMCMOD_REG_REQ_MAX_ARGS 2
12
13/**
14 * struct smcmod_reg_req - for SMC register ioctl request
15 *
16 * @service_id - requested service.
17 * @command_id - requested command.
18 * @num_args - number of arguments.
19 * @args - argument(s) to be passed to the secure world.
20 * @return_val - return value from secure world operation.
21 */
22struct smcmod_reg_req {
23 uint32_t service_id; /* in */
24 uint32_t command_id; /* in */
25 uint8_t num_args; /* in */
26 uint32_t args[SMCMOD_REG_REQ_MAX_ARGS]; /* in */
27 uint32_t return_val; /* out */
28};
29
30/**
31 * struct smcmod_buf_req - for SMC buffer ioctl request
32 *
33 * @service_id - requested service.
34 * @command_id - requested command.
35 * @ion_cmd_fd - fd obtained from ION_IOC_MAP or ION_IOC_SHARE.
36 * @cmd_len - length of command data buffer in bytes.
37 * @ion_resp_fd - fd obtained from ION_IOC_MAP or ION_IOC_SHARE.
38 * @resp_len - length of response data buffer in bytes.
39 * @return_val - return value from secure world operation.
40 */
41struct smcmod_buf_req {
42 uint32_t service_id;/* in */
43 uint32_t command_id; /* in */
44 int32_t ion_cmd_fd; /* in */
45 uint32_t cmd_len; /* in */
46 int32_t ion_resp_fd; /* in */
47 uint32_t resp_len; /* in */
48 uint32_t return_val; /* out */
49};
50
51/**
52 * struct smcmod_cipher_req - for SMC cipher command ioctl
53 *
54 * @algorithm - specifies the cipher algorithm.
55 * @operation - specifies encryption or decryption.
56 * @mode - specifies cipher mode.
57 * @ion_key_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
58 * @key_size - key size in bytes.
59 * @ion_plain_text_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
60 * @plain_text_size - size of plain text in bytes.
61 * @ion_cipher_text_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
62 * @cipher_text_size - cipher text size in bytes.
63 * @ion_init_vector_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
64 * @init_vector_size - size of initialization vector in bytes.
65 * @key_is_null - indicates that the key is null.
66 * @return_val - return value from secure world opreation.
67 */
68struct smcmod_cipher_req {
69 uint32_t algorithm; /* in */
70 uint32_t operation; /* in */
71 uint32_t mode; /* in */
72 int32_t ion_key_fd; /* in */
73 uint32_t key_size; /* in */
74 int32_t ion_plain_text_fd; /* in (encrypt)/out (decrypt) */
75 uint32_t plain_text_size; /* in */
76 int32_t ion_cipher_text_fd; /* out (encrypt)/in (decrypt) */
77 uint32_t cipher_text_size; /* in */
78 int32_t ion_init_vector_fd; /* in */
79 uint32_t init_vector_size; /* in */
80 uint32_t key_is_null; /* in */
81 uint32_t return_val; /* out */
82};
83
84/**
85 * struct smcmod_msg_digest_req - for message digest command ioctl
86 *
87 * @algorithm - specifies the cipher algorithm.
88 * @ion_key_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
89 * @key_size - hash key size in bytes.
90 * @ion_input_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
91 * @input_size - input data size in bytes.
92 * @ion_output_fd - fd obtained form ION_IOC_MAP or ION_IOC_SHARE.
93 * @output_size - size of output buffer in bytes.
94 * @fixed_block - indicates whether this is a fixed block digest.
95 * @key_is_null - indicates that the key is null.
96 * @return_val - return value from secure world opreation.
97 */
98struct smcmod_msg_digest_req {
99 uint32_t algorithm; /* in */
100 int32_t ion_key_fd; /* in */
101 uint32_t key_size; /* in */
102 int32_t ion_input_fd; /* in */
103 uint32_t input_size; /* in */
104 int32_t ion_output_fd; /* in/out */
105 uint32_t output_size; /* in */
106 uint32_t fixed_block; /* in */
107 uint32_t key_is_null; /* in */
108 uint32_t return_val; /* out */
109} __packed;
110
111#define SMCMOD_IOC_MAGIC 0x97
112
113/* Number chosen to avoid any conflicts */
114#define SMCMOD_IOCTL_SEND_REG_CMD \
115 _IOWR(SMCMOD_IOC_MAGIC, 32, struct smcmod_reg_req)
116#define SMCMOD_IOCTL_SEND_BUF_CMD \
117 _IOWR(SMCMOD_IOC_MAGIC, 33, struct smcmod_buf_req)
118#define SMCMOD_IOCTL_SEND_CIPHER_CMD \
119 _IOWR(SMCMOD_IOC_MAGIC, 34, struct smcmod_cipher_req)
120#define SMCMOD_IOCTL_SEND_MSG_DIGEST_CMD \
121 _IOWR(SMCMOD_IOC_MAGIC, 35, struct smcmod_msg_digest_req)
122#define SMCMOD_IOCTL_GET_VERSION _IOWR(SMCMOD_IOC_MAGIC, 36, uint32_t)
123#endif /* __SMCMOD_H_ */