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02a8e5bc1c
In order for a userspace AFU driver to call the POWER9 specific OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually make that call. Signed-off-by: Alastair D'Silva <alastair@d-silva.org> Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/* Copyright 2017 IBM Corp. */
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#ifndef _UAPI_MISC_OCXL_H
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#define _UAPI_MISC_OCXL_H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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enum ocxl_event_type {
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OCXL_AFU_EVENT_XSL_FAULT_ERROR = 0,
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};
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#define OCXL_KERNEL_EVENT_FLAG_LAST 0x0001 /* This is the last event pending */
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struct ocxl_kernel_event_header {
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__u16 type;
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__u16 flags;
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__u32 reserved;
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};
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struct ocxl_kernel_event_xsl_fault_error {
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__u64 addr;
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__u64 dsisr;
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__u64 count;
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__u64 reserved;
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};
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struct ocxl_ioctl_attach {
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__u64 amr;
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__u64 reserved1;
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__u64 reserved2;
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__u64 reserved3;
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};
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struct ocxl_ioctl_metadata {
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__u16 version; // struct version, always backwards compatible
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// Version 0 fields
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__u8 afu_version_major;
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__u8 afu_version_minor;
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__u32 pasid; // PASID assigned to the current context
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__u64 pp_mmio_size; // Per PASID MMIO size
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__u64 global_mmio_size;
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// End version 0 fields
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__u64 reserved[13]; // Total of 16*u64
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};
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struct ocxl_ioctl_p9_wait {
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__u16 thread_id; // The thread ID required to wake this thread
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__u16 reserved1;
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__u32 reserved2;
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__u64 reserved3[3];
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};
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#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT 0x01
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struct ocxl_ioctl_features {
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__u64 flags[4];
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};
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struct ocxl_ioctl_irq_fd {
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__u64 irq_offset;
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__s32 eventfd;
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__u32 reserved;
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};
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/* ioctl numbers */
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#define OCXL_MAGIC 0xCA
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/* AFU devices */
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#define OCXL_IOCTL_ATTACH _IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)
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#define OCXL_IOCTL_IRQ_ALLOC _IOR(OCXL_MAGIC, 0x11, __u64)
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#define OCXL_IOCTL_IRQ_FREE _IOW(OCXL_MAGIC, 0x12, __u64)
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#define OCXL_IOCTL_IRQ_SET_FD _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
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#define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)
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#define OCXL_IOCTL_ENABLE_P9_WAIT _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait)
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#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features)
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#endif /* _UAPI_MISC_OCXL_H */
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