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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
66b43081 IM |
2 | /* |
3 | * Copyright 2014 IBM Corp. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version | |
8 | * 2 of the License, or (at your option) any later version. | |
9 | */ | |
10 | ||
11 | #ifndef _UAPI_MISC_CXL_H | |
12 | #define _UAPI_MISC_CXL_H | |
13 | ||
14 | #include <linux/types.h> | |
15 | #include <linux/ioctl.h> | |
16 | ||
a9282d01 | 17 | |
66b43081 IM |
18 | struct cxl_ioctl_start_work { |
19 | __u64 flags; | |
20 | __u64 work_element_descriptor; | |
21 | __u64 amr; | |
22 | __s16 num_interrupts; | |
b1db5513 CL |
23 | __u16 tid; |
24 | __s32 reserved1; | |
25 | __u64 reserved2; | |
66b43081 IM |
26 | __u64 reserved3; |
27 | __u64 reserved4; | |
28 | __u64 reserved5; | |
66b43081 | 29 | }; |
a9282d01 | 30 | |
66b43081 IM |
31 | #define CXL_START_WORK_AMR 0x0000000000000001ULL |
32 | #define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL | |
d9232a3d | 33 | #define CXL_START_WORK_ERR_FF 0x0000000000000004ULL |
b1db5513 | 34 | #define CXL_START_WORK_TID 0x0000000000000008ULL |
66b43081 | 35 | #define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\ |
d9232a3d | 36 | CXL_START_WORK_NUM_IRQS |\ |
b1db5513 CL |
37 | CXL_START_WORK_ERR_FF |\ |
38 | CXL_START_WORK_TID) | |
66b43081 | 39 | |
27d4dc71 VJ |
40 | |
41 | /* Possible modes that an afu can be in */ | |
42 | #define CXL_MODE_DEDICATED 0x1 | |
43 | #define CXL_MODE_DIRECTED 0x2 | |
44 | ||
45 | /* possible flags for the cxl_afu_id flags field */ | |
46 | #define CXL_AFUID_FLAG_SLAVE 0x1 /* In directed-mode afu is in slave mode */ | |
47 | ||
48 | struct cxl_afu_id { | |
49 | __u64 flags; /* One of CXL_AFUID_FLAG_X */ | |
50 | __u32 card_id; | |
51 | __u32 afu_offset; | |
52 | __u32 afu_mode; /* one of the CXL_MODE_X */ | |
53 | __u32 reserved1; | |
54 | __u64 reserved2; | |
55 | __u64 reserved3; | |
56 | __u64 reserved4; | |
57 | __u64 reserved5; | |
58 | __u64 reserved6; | |
59 | }; | |
60 | ||
594ff7d0 CL |
61 | /* base adapter image header is included in the image */ |
62 | #define CXL_AI_NEED_HEADER 0x0000000000000001ULL | |
63 | #define CXL_AI_ALL CXL_AI_NEED_HEADER | |
64 | ||
65 | #define CXL_AI_HEADER_SIZE 128 | |
66 | #define CXL_AI_BUFFER_SIZE 4096 | |
67 | #define CXL_AI_MAX_ENTRIES 256 | |
68 | #define CXL_AI_MAX_CHUNK_SIZE (CXL_AI_BUFFER_SIZE * CXL_AI_MAX_ENTRIES) | |
69 | ||
70 | struct cxl_adapter_image { | |
71 | __u64 flags; | |
72 | __u64 data; | |
73 | __u64 len_data; | |
74 | __u64 len_image; | |
75 | __u64 reserved1; | |
76 | __u64 reserved2; | |
77 | __u64 reserved3; | |
78 | __u64 reserved4; | |
79 | }; | |
80 | ||
a9282d01 | 81 | /* ioctl numbers */ |
66b43081 | 82 | #define CXL_MAGIC 0xCA |
594ff7d0 | 83 | /* AFU devices */ |
66b43081 IM |
84 | #define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work) |
85 | #define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32) | |
27d4dc71 | 86 | #define CXL_IOCTL_GET_AFU_ID _IOR(CXL_MAGIC, 0x02, struct cxl_afu_id) |
594ff7d0 CL |
87 | /* adapter devices */ |
88 | #define CXL_IOCTL_DOWNLOAD_IMAGE _IOW(CXL_MAGIC, 0x0A, struct cxl_adapter_image) | |
89 | #define CXL_IOCTL_VALIDATE_IMAGE _IOW(CXL_MAGIC, 0x0B, struct cxl_adapter_image) | |
66b43081 | 90 | |
66b43081 IM |
91 | #define CXL_READ_MIN_SIZE 0x1000 /* 4K */ |
92 | ||
a9282d01 | 93 | /* Events from read() */ |
66b43081 IM |
94 | enum cxl_event_type { |
95 | CXL_EVENT_RESERVED = 0, | |
96 | CXL_EVENT_AFU_INTERRUPT = 1, | |
97 | CXL_EVENT_DATA_STORAGE = 2, | |
98 | CXL_EVENT_AFU_ERROR = 3, | |
b810253b | 99 | CXL_EVENT_AFU_DRIVER = 4, |
66b43081 IM |
100 | }; |
101 | ||
102 | struct cxl_event_header { | |
103 | __u16 type; | |
104 | __u16 size; | |
105 | __u16 process_element; | |
106 | __u16 reserved1; | |
107 | }; | |
108 | ||
109 | struct cxl_event_afu_interrupt { | |
110 | __u16 flags; | |
111 | __u16 irq; /* Raised AFU interrupt number */ | |
112 | __u32 reserved1; | |
113 | }; | |
114 | ||
115 | struct cxl_event_data_storage { | |
116 | __u16 flags; | |
117 | __u16 reserved1; | |
118 | __u32 reserved2; | |
119 | __u64 addr; | |
120 | __u64 dsisr; | |
121 | __u64 reserved3; | |
122 | }; | |
123 | ||
124 | struct cxl_event_afu_error { | |
125 | __u16 flags; | |
126 | __u16 reserved1; | |
127 | __u32 reserved2; | |
128 | __u64 error; | |
129 | }; | |
130 | ||
b810253b PB |
131 | struct cxl_event_afu_driver_reserved { |
132 | /* | |
133 | * Defines the buffer passed to the cxl driver by the AFU driver. | |
134 | * | |
135 | * This is not ABI since the event header.size passed to the user for | |
136 | * existing events is set in the read call to sizeof(cxl_event_header) | |
137 | * + sizeof(whatever event is being dispatched) and the user is already | |
138 | * required to use a 4K buffer on the read call. | |
139 | * | |
140 | * Of course the contents will be ABI, but that's up the AFU driver. | |
141 | */ | |
cbd74e1b PB |
142 | __u32 data_size; |
143 | __u8 data[]; | |
b810253b PB |
144 | }; |
145 | ||
66b43081 IM |
146 | struct cxl_event { |
147 | struct cxl_event_header header; | |
148 | union { | |
149 | struct cxl_event_afu_interrupt irq; | |
150 | struct cxl_event_data_storage fault; | |
151 | struct cxl_event_afu_error afu_error; | |
b810253b | 152 | struct cxl_event_afu_driver_reserved afu_driver_event; |
66b43081 IM |
153 | }; |
154 | }; | |
155 | ||
156 | #endif /* _UAPI_MISC_CXL_H */ |