1 /*
2 * Copyright (c) 2020, Arm Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #ifndef FFA_SVC_H
8 #define FFA_SVC_H
9
10 #include <lib/smccc.h>
11 #include <lib/utils_def.h>
12 #include <tools_share/uuid.h>
13
14 /* FFA error codes. */
15 #define FFA_ERROR_NOT_SUPPORTED -1
16 #define FFA_ERROR_INVALID_PARAMETER -2
17 #define FFA_ERROR_NO_MEMORY -3
18 #define FFA_ERROR_BUSY -4
19 #define FFA_ERROR_INTERRUPTED -5
20 #define FFA_ERROR_DENIED -6
21 #define FFA_ERROR_RETRY -7
22
23 /* The macros below are used to identify FFA calls from the SMC function ID */
24 #define FFA_FNUM_MIN_VALUE U(0x60)
25 #define FFA_FNUM_MAX_VALUE U(0x7f)
26 #define is_ffa_fid(fid) __extension__ ({ \
27 __typeof__(fid) _fid = (fid); \
28 ((GET_SMC_NUM(_fid) >= FFA_FNUM_MIN_VALUE) && \
29 (GET_SMC_NUM(_fid) <= FFA_FNUM_MAX_VALUE)); })
30
31 /* FFA_VERSION helpers */
32 #define FFA_VERSION_MAJOR U(1)
33 #define FFA_VERSION_MAJOR_SHIFT 16
34 #define FFA_VERSION_MAJOR_MASK U(0x7FFF)
35 #define FFA_VERSION_MINOR U(0)
36 #define FFA_VERSION_MINOR_SHIFT 0
37 #define FFA_VERSION_MINOR_MASK U(0xFFFF)
38 #define FFA_VERSION_BIT31_MASK U(0x1u << 31)
39
40
41 #define MAKE_FFA_VERSION(major, minor) \
42 ((((major) & FFA_VERSION_MAJOR_MASK) << FFA_VERSION_MAJOR_SHIFT) | \
43 (((minor) & FFA_VERSION_MINOR_MASK) << FFA_VERSION_MINOR_SHIFT))
44 #define FFA_VERSION_COMPILED MAKE_FFA_VERSION(FFA_VERSION_MAJOR, \
45 FFA_VERSION_MINOR)
46
47 /* FFA_MSG_SEND helpers */
48 #define FFA_MSG_SEND_ATTRS_BLK_SHIFT U(0)
49 #define FFA_MSG_SEND_ATTRS_BLK_MASK U(0x1)
50 #define FFA_MSG_SEND_ATTRS_BLK U(0)
51 #define FFA_MSG_SEND_ATTRS_BLK_NOT U(1)
52 #define FFA_MSG_SEND_ATTRS(blk) \
53 (((blk) & FFA_MSG_SEND_ATTRS_BLK_MASK) \
54 << FFA_MSG_SEND_ATTRS_BLK_SHIFT)
55
56 /* Get FFA fastcall std FID from function number */
57 #define FFA_FID(smc_cc, func_num) \
58 ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
59 ((smc_cc) << FUNCID_CC_SHIFT) | \
60 (OEN_STD_START << FUNCID_OEN_SHIFT) | \
61 ((func_num) << FUNCID_NUM_SHIFT))
62
63 /* FFA function numbers */
64 #define FFA_FNUM_ERROR U(0x60)
65 #define FFA_FNUM_SUCCESS U(0x61)
66 #define FFA_FNUM_INTERRUPT U(0x62)
67 #define FFA_FNUM_VERSION U(0x63)
68 #define FFA_FNUM_FEATURES U(0x64)
69 #define FFA_FNUM_RX_RELEASE U(0x65)
70 #define FFA_FNUM_RXTX_MAP U(0x66)
71 #define FFA_FNUM_RXTX_UNMAP U(0x67)
72 #define FFA_FNUM_PARTITION_INFO_GET U(0x68)
73 #define FFA_FNUM_ID_GET U(0x69)
74 #define FFA_FNUM_MSG_POLL U(0x6A)
75 #define FFA_FNUM_MSG_WAIT U(0x6B)
76 #define FFA_FNUM_MSG_YIELD U(0x6C)
77 #define FFA_FNUM_MSG_RUN U(0x6D)
78 #define FFA_FNUM_MSG_SEND U(0x6E)
79 #define FFA_FNUM_MSG_SEND_DIRECT_REQ U(0x6F)
80 #define FFA_FNUM_MSG_SEND_DIRECT_RESP U(0x70)
81 #define FFA_FNUM_MEM_DONATE U(0x71)
82 #define FFA_FNUM_MEM_LEND U(0x72)
83 #define FFA_FNUM_MEM_SHARE U(0x73)
84 #define FFA_FNUM_MEM_RETRIEVE_REQ U(0x74)
85 #define FFA_FNUM_MEM_RETRIEVE_RESP U(0x75)
86 #define FFA_FNUM_MEM_RELINQUISH U(0x76)
87 #define FFA_FNUM_MEM_RECLAIM U(0x77)
88
89 /* FFA SMC32 FIDs */
90 #define FFA_ERROR FFA_FID(SMC_32, FFA_FNUM_ERROR)
91 #define FFA_SUCCESS_SMC32 FFA_FID(SMC_32, FFA_FNUM_SUCCESS)
92 #define FFA_INTERRUPT FFA_FID(SMC_32, FFA_FNUM_INTERRUPT)
93 #define FFA_VERSION FFA_FID(SMC_32, FFA_FNUM_VERSION)
94 #define FFA_FEATURES FFA_FID(SMC_32, FFA_FNUM_FEATURES)
95 #define FFA_RX_RELEASE FFA_FID(SMC_32, FFA_FNUM_RX_RELEASE)
96 #define FFA_RXTX_MAP_SMC32 FFA_FID(SMC_32, FFA_FNUM_RXTX_MAP)
97 #define FFA_RXTX_UNMAP FFA_FID(SMC_32, FFA_FNUM_RXTX_UNMAP)
98 #define FFA_PARTITION_INFO_GET FFA_FID(SMC_32, FFA_FNUM_PARTITION_INFO_GET)
99 #define FFA_ID_GET FFA_FID(SMC_32, FFA_FNUM_ID_GET)
100 #define FFA_MSG_POLL FFA_FID(SMC_32, FFA_FNUM_MSG_POLL)
101 #define FFA_MSG_WAIT FFA_FID(SMC_32, FFA_FNUM_MSG_WAIT)
102 #define FFA_MSG_YIELD FFA_FID(SMC_32, FFA_FNUM_MSG_YIELD)
103 #define FFA_MSG_RUN FFA_FID(SMC_32, FFA_FNUM_MSG_RUN)
104 #define FFA_MSG_SEND FFA_FID(SMC_32, FFA_FNUM_MSG_SEND)
105 #define FFA_MSG_SEND_DIRECT_REQ_SMC32 \
106 FFA_FID(SMC_32, FFA_FNUM_MSG_SEND_DIRECT_REQ)
107 #define FFA_MSG_SEND_DIRECT_RESP_SMC32 \
108 FFA_FID(SMC_32, FFA_FNUM_MSG_SEND_DIRECT_RESP)
109 #define FFA_MEM_DONATE_SMC32 FFA_FID(SMC_32, FFA_FNUM_MEM_DONATE)
110 #define FFA_MEM_LEND_SMC32 FFA_FID(SMC_32, FFA_FNUM_MEM_LEND)
111 #define FFA_MEM_SHARE_SMC32 FFA_FID(SMC_32, FFA_FNUM_MEM_SHARE)
112 #define FFA_MEM_RETRIEVE_REQ_SMC32 \
113 FFA_FID(SMC_32, FFA_FNUM_MEM_RETRIEVE_REQ)
114 #define FFA_MEM_RETRIEVE_RESP FFA_FID(SMC_32, FFA_FNUM_MEM_RETRIEVE_RESP)
115 #define FFA_MEM_RELINQUISH FFA_FID(SMC_32, FFA_FNUM_MEM_RELINQUISH)
116 #define FFA_MEM_RECLAIM FFA_FID(SMC_32, FFA_FNUM_MEM_RECLAIM)
117
118 /* FFA SMC64 FIDs */
119 #define FFA_SUCCESS_SMC64 FFA_FID(SMC_64, FFA_FNUM_SUCCESS)
120 #define FFA_RXTX_MAP_SMC64 FFA_FID(SMC_64, FFA_FNUM_RXTX_MAP)
121 #define FFA_MSG_SEND_DIRECT_REQ_SMC64 \
122 FFA_FID(SMC_64, FFA_FNUM_MSG_SEND_DIRECT_REQ)
123 #define FFA_MSG_SEND_DIRECT_RESP_SMC64 \
124 FFA_FID(SMC_64, FFA_FNUM_MSG_SEND_DIRECT_RESP)
125 #define FFA_MEM_DONATE_SMC64 FFA_FID(SMC_64, FFA_FNUM_MEM_DONATE)
126 #define FFA_MEM_LEND_SMC64 FFA_FID(SMC_64, FFA_FNUM_MEM_LEND)
127 #define FFA_MEM_SHARE_SMC64 FFA_FID(SMC_64, FFA_FNUM_MEM_SHARE)
128 #define FFA_MEM_RETRIEVE_REQ_SMC64 \
129 FFA_FID(SMC_64, FFA_FNUM_MEM_RETRIEVE_REQ)
130
131 /*
132 * Reserve a special value for traffic targeted to the Hypervisor or SPM.
133 */
134 #define FFA_TARGET_INFO_MBZ U(0x0)
135
136 /*
137 * Reserve a special value for MBZ parameters.
138 */
139 #define FFA_PARAM_MBZ U(0x0)
140
141 /*
142 * Maximum FF-A endpoint id value
143 */
144 #define FFA_ENDPOINT_ID_MAX U(1 << 16)
145
146 /*
147 * Mask for source and destination endpoint id in
148 * a direct message request/response.
149 */
150 #define FFA_DIRECT_MSG_ENDPOINT_ID_MASK U(0xffff)
151
152 /*
153 * Bit shift for destination endpoint id in a direct message request/response.
154 */
155 #define FFA_DIRECT_MSG_DESTINATION_SHIFT U(0)
156
157 /*
158 * Bit shift for source endpoint id in a direct message request/response.
159 */
160 #define FFA_DIRECT_MSG_SOURCE_SHIFT U(16)
161
162 /******************************************************************************
163 * ffa_endpoint_destination
164 *****************************************************************************/
ffa_endpoint_destination(unsigned int ep)165 static inline uint16_t ffa_endpoint_destination(unsigned int ep)
166 {
167 return (ep >> FFA_DIRECT_MSG_DESTINATION_SHIFT) &
168 FFA_DIRECT_MSG_ENDPOINT_ID_MASK;
169 }
170
171 /******************************************************************************
172 * ffa_endpoint_source
173 *****************************************************************************/
ffa_endpoint_source(unsigned int ep)174 static inline uint16_t ffa_endpoint_source(unsigned int ep)
175 {
176 return (ep >> FFA_DIRECT_MSG_SOURCE_SHIFT) &
177 FFA_DIRECT_MSG_ENDPOINT_ID_MASK;
178 }
179
180 #endif /* FFA_SVC_H */
181