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
   9 enum 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
  15 struct ocxl_kernel_event_header {
  16         __u16 type;
  17         __u16 flags;
  18         __u32 reserved;
  19 };
  20
  21 struct ocxl_kernel_event_xsl_fault_error {
  22         __u64 addr;
  23         __u64 dsisr;
  24         __u64 count;
  25         __u64 reserved;
  26 };
  27
  28 struct ocxl_ioctl_attach {
  29         __u64 amr;
  30         __u64 reserved1;
  31         __u64 reserved2;
  32         __u64 reserved3;
  33 };
  34
  35 struct 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
  51 struct 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
  59 struct ocxl_ioctl_features {
  60         __u64 flags[4];
  61 };
  62
  63 struct 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 */