tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2023, Arm Limited
4 */
5
6#ifndef TSTEE_PRIVATE_H
7#define TSTEE_PRIVATE_H
8
9#include <linux/arm_ffa.h>
10#include <linux/bitops.h>
11#include <linux/tee_core.h>
12#include <linux/types.h>
13#include <linux/uuid.h>
14#include <linux/xarray.h>
15
16/*
17 * The description of the ABI implemented in this file is available at
18 * https://trusted-services.readthedocs.io/en/v1.0.0/developer/service-access-protocols.html#abi
19 */
20
21/* UUID of this protocol */
22#define TS_RPC_UUID UUID_INIT(0xbdcd76d7, 0x825e, 0x4751, \
23 0x96, 0x3b, 0x86, 0xd4, 0xf8, 0x49, 0x43, 0xac)
24
25/* Protocol version*/
26#define TS_RPC_PROTOCOL_VERSION (1)
27
28/* Status codes */
29#define TS_RPC_OK (0)
30
31/* RPC control register */
32#define TS_RPC_CTRL_REG (0)
33#define OPCODE_MASK GENMASK(15, 0)
34#define IFACE_ID_MASK GENMASK(23, 16)
35#define TS_RPC_CTRL_OPCODE(x) ((u16)(FIELD_GET(OPCODE_MASK, (x))))
36#define TS_RPC_CTRL_IFACE_ID(x) ((u8)(FIELD_GET(IFACE_ID_MASK, (x))))
37#define TS_RPC_CTRL_PACK_IFACE_OPCODE(i, o) \
38 (FIELD_PREP(IFACE_ID_MASK, (i)) | FIELD_PREP(OPCODE_MASK, (o)))
39#define TS_RPC_CTRL_SAP_RC BIT(30)
40#define TS_RPC_CTRL_SAP_ERR BIT(31)
41
42/* Interface ID for RPC management operations */
43#define TS_RPC_MGMT_IFACE_ID (0xff)
44
45/* Management calls */
46#define TS_RPC_OP_GET_VERSION (0x0000)
47#define TS_RPC_GET_VERSION_RESP (1)
48
49#define TS_RPC_OP_RETRIEVE_MEM (0x0001)
50#define TS_RPC_RETRIEVE_MEM_HANDLE_LSW (1)
51#define TS_RPC_RETRIEVE_MEM_HANDLE_MSW (2)
52#define TS_RPC_RETRIEVE_MEM_TAG_LSW (3)
53#define TS_RPC_RETRIEVE_MEM_TAG_MSW (4)
54#define TS_RPC_RETRIEVE_MEM_RPC_STATUS (1)
55
56#define TS_RPC_OP_RELINQ_MEM (0x0002)
57#define TS_RPC_RELINQ_MEM_HANDLE_LSW (1)
58#define TS_RPC_RELINQ_MEM_HANDLE_MSW (2)
59#define TS_RPC_RELINQ_MEM_RPC_STATUS (1)
60
61#define TS_RPC_OP_SERVICE_INFO (0x0003)
62#define TS_RPC_SERVICE_INFO_UUID0 (1)
63#define TS_RPC_SERVICE_INFO_UUID1 (2)
64#define TS_RPC_SERVICE_INFO_UUID2 (3)
65#define TS_RPC_SERVICE_INFO_UUID3 (4)
66#define TS_RPC_SERVICE_INFO_RPC_STATUS (1)
67#define TS_RPC_SERVICE_INFO_IFACE (2)
68
69/* Service call */
70#define TS_RPC_SERVICE_MEM_HANDLE_LSW (1)
71#define TS_RPC_SERVICE_MEM_HANDLE_MSW (2)
72#define TS_RPC_SERVICE_REQ_LEN (3)
73#define TS_RPC_SERVICE_CLIENT_ID (4)
74#define TS_RPC_SERVICE_RPC_STATUS (1)
75#define TS_RPC_SERVICE_STATUS (2)
76#define TS_RPC_SERVICE_RESP_LEN (3)
77
78struct tstee {
79 struct ffa_device *ffa_dev;
80 struct tee_device *teedev;
81 struct tee_shm_pool *pool;
82};
83
84struct ts_session {
85 u8 iface_id;
86};
87
88struct ts_context_data {
89 struct xarray sess_list;
90};
91
92#endif /* TSTEE_PRIVATE_H */