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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 | ||
a9282d01 | 58 | /* ioctl numbers */ |
66b43081 IM |
59 | #define CXL_MAGIC 0xCA |
60 | #define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work) | |
61 | #define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32) | |
27d4dc71 | 62 | #define CXL_IOCTL_GET_AFU_ID _IOR(CXL_MAGIC, 0x02, struct cxl_afu_id) |
66b43081 | 63 | |
66b43081 IM |
64 | #define CXL_READ_MIN_SIZE 0x1000 /* 4K */ |
65 | ||
a9282d01 | 66 | /* Events from read() */ |
66b43081 IM |
67 | enum cxl_event_type { |
68 | CXL_EVENT_RESERVED = 0, | |
69 | CXL_EVENT_AFU_INTERRUPT = 1, | |
70 | CXL_EVENT_DATA_STORAGE = 2, | |
71 | CXL_EVENT_AFU_ERROR = 3, | |
72 | }; | |
73 | ||
74 | struct cxl_event_header { | |
75 | __u16 type; | |
76 | __u16 size; | |
77 | __u16 process_element; | |
78 | __u16 reserved1; | |
79 | }; | |
80 | ||
81 | struct cxl_event_afu_interrupt { | |
82 | __u16 flags; | |
83 | __u16 irq; /* Raised AFU interrupt number */ | |
84 | __u32 reserved1; | |
85 | }; | |
86 | ||
87 | struct cxl_event_data_storage { | |
88 | __u16 flags; | |
89 | __u16 reserved1; | |
90 | __u32 reserved2; | |
91 | __u64 addr; | |
92 | __u64 dsisr; | |
93 | __u64 reserved3; | |
94 | }; | |
95 | ||
96 | struct cxl_event_afu_error { | |
97 | __u16 flags; | |
98 | __u16 reserved1; | |
99 | __u32 reserved2; | |
100 | __u64 error; | |
101 | }; | |
102 | ||
103 | struct cxl_event { | |
104 | struct cxl_event_header header; | |
105 | union { | |
106 | struct cxl_event_afu_interrupt irq; | |
107 | struct cxl_event_data_storage fault; | |
108 | struct cxl_event_afu_error afu_error; | |
109 | }; | |
110 | }; | |
111 | ||
112 | #endif /* _UAPI_MISC_CXL_H */ |