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66b43081 IM |
1 | /* |
2 | * Copyright 2014 IBM Corp. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | */ | |
9 | ||
10 | #ifndef _UAPI_MISC_CXL_H | |
11 | #define _UAPI_MISC_CXL_H | |
12 | ||
13 | #include <linux/types.h> | |
14 | #include <linux/ioctl.h> | |
15 | ||
a9282d01 | 16 | |
66b43081 IM |
17 | struct cxl_ioctl_start_work { |
18 | __u64 flags; | |
19 | __u64 work_element_descriptor; | |
20 | __u64 amr; | |
21 | __s16 num_interrupts; | |
22 | __s16 reserved1; | |
23 | __s32 reserved2; | |
24 | __u64 reserved3; | |
25 | __u64 reserved4; | |
26 | __u64 reserved5; | |
27 | __u64 reserved6; | |
28 | }; | |
a9282d01 | 29 | |
66b43081 IM |
30 | #define CXL_START_WORK_AMR 0x0000000000000001ULL |
31 | #define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL | |
d9232a3d | 32 | #define CXL_START_WORK_ERR_FF 0x0000000000000004ULL |
66b43081 | 33 | #define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\ |
d9232a3d IM |
34 | CXL_START_WORK_NUM_IRQS |\ |
35 | CXL_START_WORK_ERR_FF) | |
66b43081 | 36 | |
27d4dc71 VJ |
37 | |
38 | /* Possible modes that an afu can be in */ | |
39 | #define CXL_MODE_DEDICATED 0x1 | |
40 | #define CXL_MODE_DIRECTED 0x2 | |
41 | ||
42 | /* possible flags for the cxl_afu_id flags field */ | |
43 | #define CXL_AFUID_FLAG_SLAVE 0x1 /* In directed-mode afu is in slave mode */ | |
44 | ||
45 | struct cxl_afu_id { | |
46 | __u64 flags; /* One of CXL_AFUID_FLAG_X */ | |
47 | __u32 card_id; | |
48 | __u32 afu_offset; | |
49 | __u32 afu_mode; /* one of the CXL_MODE_X */ | |
50 | __u32 reserved1; | |
51 | __u64 reserved2; | |
52 | __u64 reserved3; | |
53 | __u64 reserved4; | |
54 | __u64 reserved5; | |
55 | __u64 reserved6; | |
56 | }; | |
57 | ||
594ff7d0 CL |
58 | /* base adapter image header is included in the image */ |
59 | #define CXL_AI_NEED_HEADER 0x0000000000000001ULL | |
60 | #define CXL_AI_ALL CXL_AI_NEED_HEADER | |
61 | ||
62 | #define CXL_AI_HEADER_SIZE 128 | |
63 | #define CXL_AI_BUFFER_SIZE 4096 | |
64 | #define CXL_AI_MAX_ENTRIES 256 | |
65 | #define CXL_AI_MAX_CHUNK_SIZE (CXL_AI_BUFFER_SIZE * CXL_AI_MAX_ENTRIES) | |
66 | ||
67 | struct cxl_adapter_image { | |
68 | __u64 flags; | |
69 | __u64 data; | |
70 | __u64 len_data; | |
71 | __u64 len_image; | |
72 | __u64 reserved1; | |
73 | __u64 reserved2; | |
74 | __u64 reserved3; | |
75 | __u64 reserved4; | |
76 | }; | |
77 | ||
a9282d01 | 78 | /* ioctl numbers */ |
66b43081 | 79 | #define CXL_MAGIC 0xCA |
594ff7d0 | 80 | /* AFU devices */ |
66b43081 IM |
81 | #define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work) |
82 | #define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32) | |
27d4dc71 | 83 | #define CXL_IOCTL_GET_AFU_ID _IOR(CXL_MAGIC, 0x02, struct cxl_afu_id) |
594ff7d0 CL |
84 | /* adapter devices */ |
85 | #define CXL_IOCTL_DOWNLOAD_IMAGE _IOW(CXL_MAGIC, 0x0A, struct cxl_adapter_image) | |
86 | #define CXL_IOCTL_VALIDATE_IMAGE _IOW(CXL_MAGIC, 0x0B, struct cxl_adapter_image) | |
66b43081 | 87 | |
66b43081 IM |
88 | #define CXL_READ_MIN_SIZE 0x1000 /* 4K */ |
89 | ||
a9282d01 | 90 | /* Events from read() */ |
66b43081 IM |
91 | enum cxl_event_type { |
92 | CXL_EVENT_RESERVED = 0, | |
93 | CXL_EVENT_AFU_INTERRUPT = 1, | |
94 | CXL_EVENT_DATA_STORAGE = 2, | |
95 | CXL_EVENT_AFU_ERROR = 3, | |
b810253b | 96 | CXL_EVENT_AFU_DRIVER = 4, |
66b43081 IM |
97 | }; |
98 | ||
99 | struct cxl_event_header { | |
100 | __u16 type; | |
101 | __u16 size; | |
102 | __u16 process_element; | |
103 | __u16 reserved1; | |
104 | }; | |
105 | ||
106 | struct cxl_event_afu_interrupt { | |
107 | __u16 flags; | |
108 | __u16 irq; /* Raised AFU interrupt number */ | |
109 | __u32 reserved1; | |
110 | }; | |
111 | ||
112 | struct cxl_event_data_storage { | |
113 | __u16 flags; | |
114 | __u16 reserved1; | |
115 | __u32 reserved2; | |
116 | __u64 addr; | |
117 | __u64 dsisr; | |
118 | __u64 reserved3; | |
119 | }; | |
120 | ||
121 | struct cxl_event_afu_error { | |
122 | __u16 flags; | |
123 | __u16 reserved1; | |
124 | __u32 reserved2; | |
125 | __u64 error; | |
126 | }; | |
127 | ||
b810253b PB |
128 | struct cxl_event_afu_driver_reserved { |
129 | /* | |
130 | * Defines the buffer passed to the cxl driver by the AFU driver. | |
131 | * | |
132 | * This is not ABI since the event header.size passed to the user for | |
133 | * existing events is set in the read call to sizeof(cxl_event_header) | |
134 | * + sizeof(whatever event is being dispatched) and the user is already | |
135 | * required to use a 4K buffer on the read call. | |
136 | * | |
137 | * Of course the contents will be ABI, but that's up the AFU driver. | |
138 | */ | |
139 | size_t data_size; | |
140 | u8 data[]; | |
141 | }; | |
142 | ||
66b43081 IM |
143 | struct cxl_event { |
144 | struct cxl_event_header header; | |
145 | union { | |
146 | struct cxl_event_afu_interrupt irq; | |
147 | struct cxl_event_data_storage fault; | |
148 | struct cxl_event_afu_error afu_error; | |
b810253b | 149 | struct cxl_event_afu_driver_reserved afu_driver_event; |
66b43081 IM |
150 | }; |
151 | }; | |
152 | ||
153 | #endif /* _UAPI_MISC_CXL_H */ |