LXR linux/include/uapi/misc/ocxl.h

   1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2/* Copyright 2017 IBM Corp. */
   3#ifndef _UAPI_MISC_OCXL_H
   4#define _UAPI_MISC_OCXL_H
   5
   6#include <linux/types.h>
   7#include <linux/ioctl.h>
   8
   9enum ocxl_event_type {
  10        OCXL_AFU_EVENT_XSL_FAULT_ERROR = 0,
  11};
  12
  13#define OCXL_KERNEL_EVENT_FLAG_LAST 0x0001  /* This is the last event pending */
  14
  15struct ocxl_kernel_event_header {
  16        __u16 type;
  17        __u16 flags;
  18        __u32 reserved;
  19};
  20
  21struct ocxl_kernel_event_xsl_fault_error {
  22        __u64 addr;
  23        __u64 dsisr;
  24        __u64 count;
  25        __u64 reserved;
  26};
  27
  28struct ocxl_ioctl_attach {
  29        __u64 amr;
  30        __u64 reserved1;
  31        __u64 reserved2;
  32        __u64 reserved3;
  33};
  34
  35struct ocxl_ioctl_metadata {
  36        __u16 version; /* struct version, always backwards compatible */
  37
  38        /* Version 0 fields */
  39        __u8  afu_version_major;
  40        __u8  afu_version_minor;
  41        __u32 pasid;            /* PASID assigned to the current context */
  42
  43        __u64 pp_mmio_size;     /* Per PASID MMIO size */
  44        __u64 global_mmio_size;
  45
  46        /* End version 0 fields */
  47
  48        __u64 reserved[13]; /* Total of 16*u64 */
  49};
  50
  51struct ocxl_ioctl_p9_wait {
  52        __u16 thread_id; /* The thread ID required to wake this thread */
  53        __u16 reserved1;
  54        __u32 reserved2;
  55        __u64 reserved3[3];
  56};
  57
  58#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT      0x01
  59struct ocxl_ioctl_features {
  60        __u64 flags[4];
  61};
  62
  63struct ocxl_ioctl_irq_fd {
  64        __u64 irq_offset;
  65        __s32 eventfd;
  66        __u32 reserved;
  67};
  68
  69/* ioctl numbers */
  70#define OCXL_MAGIC 0xCA
  71/* AFU devices */
  72#define OCXL_IOCTL_ATTACH       _IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)
  73#define OCXL_IOCTL_IRQ_ALLOC    _IOR(OCXL_MAGIC, 0x11, __u64)
  74#define OCXL_IOCTL_IRQ_FREE     _IOW(OCXL_MAGIC, 0x12, __u64)
  75#define OCXL_IOCTL_IRQ_SET_FD   _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
  76#define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)
  77#define OCXL_IOCTL_ENABLE_P9_WAIT       _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait)
  78#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features)
  79
  80#endif /* _UAPI_MISC_OCXL_H */
  81