^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2014 IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This program is free software; you can redistribute it and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * modify it under the terms of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * as published by the Free Software Foundation; either version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * 2 of the License, or (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #ifndef _UAPI_MISC_CXL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define _UAPI_MISC_CXL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct cxl_ioctl_start_work {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) __u64 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) __u64 work_element_descriptor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) __u64 amr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) __s16 num_interrupts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) __u16 tid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) __s32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) __u64 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) __u64 reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) __u64 reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) __u64 reserved5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define CXL_START_WORK_AMR 0x0000000000000001ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define CXL_START_WORK_ERR_FF 0x0000000000000004ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define CXL_START_WORK_TID 0x0000000000000008ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) CXL_START_WORK_NUM_IRQS |\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) CXL_START_WORK_ERR_FF |\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) CXL_START_WORK_TID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* Possible modes that an afu can be in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define CXL_MODE_DEDICATED 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define CXL_MODE_DIRECTED 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* possible flags for the cxl_afu_id flags field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define CXL_AFUID_FLAG_SLAVE 0x1 /* In directed-mode afu is in slave mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct cxl_afu_id {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) __u64 flags; /* One of CXL_AFUID_FLAG_X */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) __u32 card_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) __u32 afu_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) __u32 afu_mode; /* one of the CXL_MODE_X */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) __u32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) __u64 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) __u64 reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) __u64 reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) __u64 reserved5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) __u64 reserved6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* base adapter image header is included in the image */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define CXL_AI_NEED_HEADER 0x0000000000000001ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define CXL_AI_ALL CXL_AI_NEED_HEADER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define CXL_AI_HEADER_SIZE 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define CXL_AI_BUFFER_SIZE 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define CXL_AI_MAX_ENTRIES 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define CXL_AI_MAX_CHUNK_SIZE (CXL_AI_BUFFER_SIZE * CXL_AI_MAX_ENTRIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct cxl_adapter_image {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) __u64 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) __u64 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) __u64 len_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) __u64 len_image;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) __u64 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) __u64 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) __u64 reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) __u64 reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* ioctl numbers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define CXL_MAGIC 0xCA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* AFU devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define CXL_IOCTL_GET_AFU_ID _IOR(CXL_MAGIC, 0x02, struct cxl_afu_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /* adapter devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define CXL_IOCTL_DOWNLOAD_IMAGE _IOW(CXL_MAGIC, 0x0A, struct cxl_adapter_image)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define CXL_IOCTL_VALIDATE_IMAGE _IOW(CXL_MAGIC, 0x0B, struct cxl_adapter_image)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define CXL_READ_MIN_SIZE 0x1000 /* 4K */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /* Events from read() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) enum cxl_event_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) CXL_EVENT_RESERVED = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) CXL_EVENT_AFU_INTERRUPT = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) CXL_EVENT_DATA_STORAGE = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) CXL_EVENT_AFU_ERROR = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) CXL_EVENT_AFU_DRIVER = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct cxl_event_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) __u16 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) __u16 size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) __u16 process_element;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) __u16 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct cxl_event_afu_interrupt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) __u16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) __u16 irq; /* Raised AFU interrupt number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) __u32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct cxl_event_data_storage {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) __u16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) __u16 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) __u32 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) __u64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) __u64 dsisr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) __u64 reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct cxl_event_afu_error {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) __u16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) __u16 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) __u32 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) __u64 error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct cxl_event_afu_driver_reserved {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * Defines the buffer passed to the cxl driver by the AFU driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * This is not ABI since the event header.size passed to the user for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * existing events is set in the read call to sizeof(cxl_event_header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * + sizeof(whatever event is being dispatched) and the user is already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * required to use a 4K buffer on the read call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * Of course the contents will be ABI, but that's up the AFU driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) __u32 data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) __u8 data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct cxl_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct cxl_event_header header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct cxl_event_afu_interrupt irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct cxl_event_data_storage fault;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct cxl_event_afu_error afu_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct cxl_event_afu_driver_reserved afu_driver_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #endif /* _UAPI_MISC_CXL_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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