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-rw-r--r--include/uapi/asm-generic/unistd.h6
-rw-r--r--include/uapi/drm/drm.h19
-rw-r--r--include/uapi/drm/msm_drm.h12
-rw-r--r--include/uapi/drm/radeon_drm.h20
-rw-r--r--include/uapi/drm/vmwgfx_drm.h13
-rw-r--r--include/uapi/linux/btrfs.h1
-rw-r--r--include/uapi/linux/in6.h23
-rw-r--r--include/uapi/linux/mic_ioctl.h2
-rw-r--r--include/uapi/linux/nvme.h11
-rw-r--r--include/uapi/xen/Kbuild2
-rw-r--r--include/uapi/xen/gntalloc.h82
-rw-r--r--include/uapi/xen/gntdev.h150
12 files changed, 321 insertions, 20 deletions
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index a20a9b4d3871..dde8041f40d2 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -692,9 +692,13 @@ __SC_COMP(__NR_process_vm_writev, sys_process_vm_writev, \
__SYSCALL(__NR_kcmp, sys_kcmp)
#define __NR_finit_module 273
__SYSCALL(__NR_finit_module, sys_finit_module)
+#define __NR_sched_setattr 274
+__SYSCALL(__NR_sched_setattr, sys_sched_setattr)
+#define __NR_sched_getattr 275
+__SYSCALL(__NR_sched_getattr, sys_sched_getattr)
#undef __NR_syscalls
-#define __NR_syscalls 274
+#define __NR_syscalls 276
/*
* All syscalls below here should go away really,
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 3c9a833992e8..9abbeb924cbb 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -619,6 +619,17 @@ struct drm_gem_open {
#define DRM_PRIME_CAP_EXPORT 0x2
#define DRM_CAP_TIMESTAMP_MONOTONIC 0x6
#define DRM_CAP_ASYNC_PAGE_FLIP 0x7
+/*
+ * The CURSOR_WIDTH and CURSOR_HEIGHT capabilities return a valid widthxheight
+ * combination for the hardware cursor. The intention is that a hardware
+ * agnostic userspace can query a cursor plane size to use.
+ *
+ * Note that the cross-driver contract is to merely return a valid size;
+ * drivers are free to attach another meaning on top, eg. i915 returns the
+ * maximum plane size.
+ */
+#define DRM_CAP_CURSOR_WIDTH 0x8
+#define DRM_CAP_CURSOR_HEIGHT 0x9
/** DRM_IOCTL_GET_CAP ioctl argument type */
struct drm_get_cap {
@@ -635,6 +646,14 @@ struct drm_get_cap {
*/
#define DRM_CLIENT_CAP_STEREO_3D 1
+/**
+ * DRM_CLIENT_CAP_UNIVERSAL_PLANES
+ *
+ * If set to 1, the DRM core will expose all planes (overlay, primary, and
+ * cursor) to userspace.
+ */
+#define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2
+
/** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
struct drm_set_client_cap {
__u64 capability;
diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h
index d3c62074016d..0664c31f010c 100644
--- a/include/uapi/drm/msm_drm.h
+++ b/include/uapi/drm/msm_drm.h
@@ -50,6 +50,7 @@ struct drm_msm_timespec {
#define MSM_PARAM_GPU_ID 0x01
#define MSM_PARAM_GMEM_SIZE 0x02
+#define MSM_PARAM_CHIP_ID 0x03
struct drm_msm_param {
uint32_t pipe; /* in, MSM_PIPE_x */
@@ -69,6 +70,12 @@ struct drm_msm_param {
#define MSM_BO_WC 0x00020000
#define MSM_BO_UNCACHED 0x00040000
+#define MSM_BO_FLAGS (MSM_BO_SCANOUT | \
+ MSM_BO_GPU_READONLY | \
+ MSM_BO_CACHED | \
+ MSM_BO_WC | \
+ MSM_BO_UNCACHED)
+
struct drm_msm_gem_new {
uint64_t size; /* in */
uint32_t flags; /* in, mask of MSM_BO_x */
@@ -85,6 +92,8 @@ struct drm_msm_gem_info {
#define MSM_PREP_WRITE 0x02
#define MSM_PREP_NOSYNC 0x04
+#define MSM_PREP_FLAGS (MSM_PREP_READ | MSM_PREP_WRITE | MSM_PREP_NOSYNC)
+
struct drm_msm_gem_cpu_prep {
uint32_t handle; /* in */
uint32_t op; /* in, mask of MSM_PREP_x */
@@ -152,6 +161,9 @@ struct drm_msm_gem_submit_cmd {
*/
#define MSM_SUBMIT_BO_READ 0x0001
#define MSM_SUBMIT_BO_WRITE 0x0002
+
+#define MSM_SUBMIT_BO_FLAGS (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE)
+
struct drm_msm_gem_submit_bo {
uint32_t flags; /* in, mask of MSM_SUBMIT_BO_x */
uint32_t handle; /* in, GEM handle */
diff --git a/include/uapi/drm/radeon_drm.h b/include/uapi/drm/radeon_drm.h
index d9ea3a73afe2..aefa2f6afa3b 100644
--- a/include/uapi/drm/radeon_drm.h
+++ b/include/uapi/drm/radeon_drm.h
@@ -510,6 +510,7 @@ typedef struct {
#define DRM_RADEON_GEM_GET_TILING 0x29
#define DRM_RADEON_GEM_BUSY 0x2a
#define DRM_RADEON_GEM_VA 0x2b
+#define DRM_RADEON_GEM_OP 0x2c
#define DRM_IOCTL_RADEON_CP_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_RADEON_CP_INIT, drm_radeon_init_t)
#define DRM_IOCTL_RADEON_CP_START DRM_IO( DRM_COMMAND_BASE + DRM_RADEON_CP_START)
@@ -552,6 +553,7 @@ typedef struct {
#define DRM_IOCTL_RADEON_GEM_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_GET_TILING, struct drm_radeon_gem_get_tiling)
#define DRM_IOCTL_RADEON_GEM_BUSY DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_BUSY, struct drm_radeon_gem_busy)
#define DRM_IOCTL_RADEON_GEM_VA DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_VA, struct drm_radeon_gem_va)
+#define DRM_IOCTL_RADEON_GEM_OP DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_OP, struct drm_radeon_gem_op)
typedef struct drm_radeon_init {
enum {
@@ -884,6 +886,16 @@ struct drm_radeon_gem_pwrite {
uint64_t data_ptr;
};
+/* Sets or returns a value associated with a buffer. */
+struct drm_radeon_gem_op {
+ uint32_t handle; /* buffer */
+ uint32_t op; /* RADEON_GEM_OP_* */
+ uint64_t value; /* input or return value */
+};
+
+#define RADEON_GEM_OP_GET_INITIAL_DOMAIN 0
+#define RADEON_GEM_OP_SET_INITIAL_DOMAIN 1
+
#define RADEON_VA_MAP 1
#define RADEON_VA_UNMAP 2
@@ -919,6 +931,7 @@ struct drm_radeon_gem_va {
#define RADEON_CS_RING_COMPUTE 1
#define RADEON_CS_RING_DMA 2
#define RADEON_CS_RING_UVD 3
+#define RADEON_CS_RING_VCE 4
/* The third dword of RADEON_CHUNK_ID_FLAGS is a sint32 that sets the priority */
/* 0 = normal, + = higher priority, - = lower priority */
@@ -987,6 +1000,13 @@ struct drm_radeon_cs {
#define RADEON_INFO_SI_BACKEND_ENABLED_MASK 0x19
/* max engine clock - needed for OpenCL */
#define RADEON_INFO_MAX_SCLK 0x1a
+/* version of VCE firmware */
+#define RADEON_INFO_VCE_FW_VERSION 0x1b
+/* version of VCE feedback */
+#define RADEON_INFO_VCE_FB_VERSION 0x1c
+#define RADEON_INFO_NUM_BYTES_MOVED 0x1d
+#define RADEON_INFO_VRAM_USAGE 0x1e
+#define RADEON_INFO_GTT_USAGE 0x1f
struct drm_radeon_info {
diff --git a/include/uapi/drm/vmwgfx_drm.h b/include/uapi/drm/vmwgfx_drm.h
index 9971c560ed9a..4fc66f6b12ce 100644
--- a/include/uapi/drm/vmwgfx_drm.h
+++ b/include/uapi/drm/vmwgfx_drm.h
@@ -87,6 +87,16 @@
#define DRM_VMW_PARAM_MAX_SURF_MEMORY 7
#define DRM_VMW_PARAM_3D_CAPS_SIZE 8
#define DRM_VMW_PARAM_MAX_MOB_MEMORY 9
+#define DRM_VMW_PARAM_MAX_MOB_SIZE 10
+
+/**
+ * enum drm_vmw_handle_type - handle type for ref ioctls
+ *
+ */
+enum drm_vmw_handle_type {
+ DRM_VMW_HANDLE_LEGACY = 0,
+ DRM_VMW_HANDLE_PRIME = 1
+};
/**
* struct drm_vmw_getparam_arg
@@ -176,6 +186,7 @@ struct drm_vmw_surface_create_req {
* struct drm_wmv_surface_arg
*
* @sid: Surface id of created surface or surface to destroy or reference.
+ * @handle_type: Handle type for DRM_VMW_REF_SURFACE Ioctl.
*
* Output data from the DRM_VMW_CREATE_SURFACE Ioctl.
* Input argument to the DRM_VMW_UNREF_SURFACE Ioctl.
@@ -184,7 +195,7 @@ struct drm_vmw_surface_create_req {
struct drm_vmw_surface_arg {
int32_t sid;
- uint32_t pad64;
+ enum drm_vmw_handle_type handle_type;
};
/**
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index 1b8a0f4c9590..b4d69092fbdb 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -558,7 +558,6 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code)
#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
struct btrfs_ioctl_space_args)
-#define BTRFS_IOC_GLOBAL_RSV _IOR(BTRFS_IOCTL_MAGIC, 20, __u64)
#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h
index 633b93cac1ed..e9a1d2d973b6 100644
--- a/include/uapi/linux/in6.h
+++ b/include/uapi/linux/in6.h
@@ -128,22 +128,13 @@ struct in6_flowlabel_req {
* IPV6 extension headers
*/
#if __UAPI_DEF_IPPROTO_V6
-enum {
- IPPROTO_HOPOPTS = 0, /* IPv6 hop-by-hop options */
-#define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
- IPPROTO_ROUTING = 43, /* IPv6 routing header */
-#define IPPROTO_ROUTING IPPROTO_ROUTING
- IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header */
-#define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
- IPPROTO_ICMPV6 = 58, /* ICMPv6 */
-#define IPPROTO_ICMPV6 IPPROTO_ICMPV6
- IPPROTO_NONE = 59, /* IPv6 no next header */
-#define IPPROTO_NONE IPPROTO_NONE
- IPPROTO_DSTOPTS = 60, /* IPv6 destination options */
-#define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
- IPPROTO_MH = 135, /* IPv6 mobility header */
-#define IPPROTO_MH IPPROTO_MH
-};
+#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
+#define IPPROTO_ROUTING 43 /* IPv6 routing header */
+#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
+#define IPPROTO_ICMPV6 58 /* ICMPv6 */
+#define IPPROTO_NONE 59 /* IPv6 no next header */
+#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
+#define IPPROTO_MH 135 /* IPv6 mobility header */
#endif /* __UAPI_DEF_IPPROTO_V6 */
/*
diff --git a/include/uapi/linux/mic_ioctl.h b/include/uapi/linux/mic_ioctl.h
index 7fabba5059cf..feb0b4c0814c 100644
--- a/include/uapi/linux/mic_ioctl.h
+++ b/include/uapi/linux/mic_ioctl.h
@@ -39,7 +39,7 @@ struct mic_copy_desc {
#else
struct iovec *iov;
#endif
- int iovcnt;
+ __u32 iovcnt;
__u8 vr_idx;
__u8 update_used;
__u32 out_len;
diff --git a/include/uapi/linux/nvme.h b/include/uapi/linux/nvme.h
index 989c04e0c563..e5ab62201119 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -350,6 +350,16 @@ struct nvme_delete_queue {
__u32 rsvd11[5];
};
+struct nvme_abort_cmd {
+ __u8 opcode;
+ __u8 flags;
+ __u16 command_id;
+ __u32 rsvd1[9];
+ __le16 sqid;
+ __u16 cid;
+ __u32 rsvd11[5];
+};
+
struct nvme_download_firmware {
__u8 opcode;
__u8 flags;
@@ -384,6 +394,7 @@ struct nvme_command {
struct nvme_download_firmware dlfw;
struct nvme_format_cmd format;
struct nvme_dsm_cmd dsm;
+ struct nvme_abort_cmd abort;
};
};
diff --git a/include/uapi/xen/Kbuild b/include/uapi/xen/Kbuild
index 61257cb14653..5c459628e8c7 100644
--- a/include/uapi/xen/Kbuild
+++ b/include/uapi/xen/Kbuild
@@ -1,3 +1,5 @@
# UAPI Header export list
header-y += evtchn.h
+header-y += gntalloc.h
+header-y += gntdev.h
header-y += privcmd.h
diff --git a/include/uapi/xen/gntalloc.h b/include/uapi/xen/gntalloc.h
new file mode 100644
index 000000000000..76bd58065f4f
--- /dev/null
+++ b/include/uapi/xen/gntalloc.h
@@ -0,0 +1,82 @@
+/******************************************************************************
+ * gntalloc.h
+ *
+ * Interface to /dev/xen/gntalloc.
+ *
+ * Author: Daniel De Graaf <dgdegra@tycho.nsa.gov>
+ *
+ * This file is in the public domain.
+ */
+
+#ifndef __LINUX_PUBLIC_GNTALLOC_H__
+#define __LINUX_PUBLIC_GNTALLOC_H__
+
+/*
+ * Allocates a new page and creates a new grant reference.
+ */
+#define IOCTL_GNTALLOC_ALLOC_GREF \
+_IOC(_IOC_NONE, 'G', 5, sizeof(struct ioctl_gntalloc_alloc_gref))
+struct ioctl_gntalloc_alloc_gref {
+ /* IN parameters */
+ /* The ID of the domain to be given access to the grants. */
+ uint16_t domid;
+ /* Flags for this mapping */
+ uint16_t flags;
+ /* Number of pages to map */
+ uint32_t count;
+ /* OUT parameters */
+ /* The offset to be used on a subsequent call to mmap(). */
+ uint64_t index;
+ /* The grant references of the newly created grant, one per page */
+ /* Variable size, depending on count */
+ uint32_t gref_ids[1];
+};
+
+#define GNTALLOC_FLAG_WRITABLE 1
+
+/*
+ * Deallocates the grant reference, allowing the associated page to be freed if
+ * no other domains are using it.
+ */
+#define IOCTL_GNTALLOC_DEALLOC_GREF \
+_IOC(_IOC_NONE, 'G', 6, sizeof(struct ioctl_gntalloc_dealloc_gref))
+struct ioctl_gntalloc_dealloc_gref {
+ /* IN parameters */
+ /* The offset returned in the map operation */
+ uint64_t index;
+ /* Number of references to unmap */
+ uint32_t count;
+};
+
+/*
+ * Sets up an unmap notification within the page, so that the other side can do
+ * cleanup if this side crashes. Required to implement cross-domain robust
+ * mutexes or close notification on communication channels.
+ *
+ * Each mapped page only supports one notification; multiple calls referring to
+ * the same page overwrite the previous notification. You must clear the
+ * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it
+ * to occur.
+ */
+#define IOCTL_GNTALLOC_SET_UNMAP_NOTIFY \
+_IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntalloc_unmap_notify))
+struct ioctl_gntalloc_unmap_notify {
+ /* IN parameters */
+ /* Offset in the file descriptor for a byte within the page (same as
+ * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to
+ * be cleared. Otherwise, it can be any byte in the page whose
+ * notification we are adjusting.
+ */
+ uint64_t index;
+ /* Action(s) to take on unmap */
+ uint32_t action;
+ /* Event channel to notify */
+ uint32_t event_channel_port;
+};
+
+/* Clear (set to zero) the byte specified by index */
+#define UNMAP_NOTIFY_CLEAR_BYTE 0x1
+/* Send an interrupt on the indicated event channel */
+#define UNMAP_NOTIFY_SEND_EVENT 0x2
+
+#endif /* __LINUX_PUBLIC_GNTALLOC_H__ */
diff --git a/include/uapi/xen/gntdev.h b/include/uapi/xen/gntdev.h
new file mode 100644
index 000000000000..5304bd3c84c5
--- /dev/null
+++ b/include/uapi/xen/gntdev.h
@@ -0,0 +1,150 @@
+/******************************************************************************
+ * gntdev.h
+ *
+ * Interface to /dev/xen/gntdev.
+ *
+ * Copyright (c) 2007, D G Murray
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef __LINUX_PUBLIC_GNTDEV_H__
+#define __LINUX_PUBLIC_GNTDEV_H__
+
+struct ioctl_gntdev_grant_ref {
+ /* The domain ID of the grant to be mapped. */
+ uint32_t domid;
+ /* The grant reference of the grant to be mapped. */
+ uint32_t ref;
+};
+
+/*
+ * Inserts the grant references into the mapping table of an instance
+ * of gntdev. N.B. This does not perform the mapping, which is deferred
+ * until mmap() is called with @index as the offset.
+ */
+#define IOCTL_GNTDEV_MAP_GRANT_REF \
+_IOC(_IOC_NONE, 'G', 0, sizeof(struct ioctl_gntdev_map_grant_ref))
+struct ioctl_gntdev_map_grant_ref {
+ /* IN parameters */
+ /* The number of grants to be mapped. */
+ uint32_t count;
+ uint32_t pad;
+ /* OUT parameters */
+ /* The offset to be used on a subsequent call to mmap(). */
+ uint64_t index;
+ /* Variable IN parameter. */
+ /* Array of grant references, of size @count. */
+ struct ioctl_gntdev_grant_ref refs[1];
+};
+
+/*
+ * Removes the grant references from the mapping table of an instance of
+ * of gntdev. N.B. munmap() must be called on the relevant virtual address(es)
+ * before this ioctl is called, or an error will result.
+ */
+#define IOCTL_GNTDEV_UNMAP_GRANT_REF \
+_IOC(_IOC_NONE, 'G', 1, sizeof(struct ioctl_gntdev_unmap_grant_ref))
+struct ioctl_gntdev_unmap_grant_ref {
+ /* IN parameters */
+ /* The offset was returned by the corresponding map operation. */
+ uint64_t index;
+ /* The number of pages to be unmapped. */
+ uint32_t count;
+ uint32_t pad;
+};
+
+/*
+ * Returns the offset in the driver's address space that corresponds
+ * to @vaddr. This can be used to perform a munmap(), followed by an
+ * UNMAP_GRANT_REF ioctl, where no state about the offset is retained by
+ * the caller. The number of pages that were allocated at the same time as
+ * @vaddr is returned in @count.
+ *
+ * N.B. Where more than one page has been mapped into a contiguous range, the
+ * supplied @vaddr must correspond to the start of the range; otherwise
+ * an error will result. It is only possible to munmap() the entire
+ * contiguously-allocated range at once, and not any subrange thereof.
+ */
+#define IOCTL_GNTDEV_GET_OFFSET_FOR_VADDR \
+_IOC(_IOC_NONE, 'G', 2, sizeof(struct ioctl_gntdev_get_offset_for_vaddr))
+struct ioctl_gntdev_get_offset_for_vaddr {
+ /* IN parameters */
+ /* The virtual address of the first mapped page in a range. */
+ uint64_t vaddr;
+ /* OUT parameters */
+ /* The offset that was used in the initial mmap() operation. */
+ uint64_t offset;
+ /* The number of pages mapped in the VM area that begins at @vaddr. */
+ uint32_t count;
+ uint32_t pad;
+};
+
+/*
+ * Sets the maximum number of grants that may mapped at once by this gntdev
+ * instance.
+ *
+ * N.B. This must be called before any other ioctl is performed on the device.
+ */
+#define IOCTL_GNTDEV_SET_MAX_GRANTS \
+_IOC(_IOC_NONE, 'G', 3, sizeof(struct ioctl_gntdev_set_max_grants))
+struct ioctl_gntdev_set_max_grants {
+ /* IN parameter */
+ /* The maximum number of grants that may be mapped at once. */
+ uint32_t count;
+};
+
+/*
+ * Sets up an unmap notification within the page, so that the other side can do
+ * cleanup if this side crashes. Required to implement cross-domain robust
+ * mutexes or close notification on communication channels.
+ *
+ * Each mapped page only supports one notification; multiple calls referring to
+ * the same page overwrite the previous notification. You must clear the
+ * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it
+ * to occur.
+ */
+#define IOCTL_GNTDEV_SET_UNMAP_NOTIFY \
+_IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntdev_unmap_notify))
+struct ioctl_gntdev_unmap_notify {
+ /* IN parameters */
+ /* Offset in the file descriptor for a byte within the page (same as
+ * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to
+ * be cleared. Otherwise, it can be any byte in the page whose
+ * notification we are adjusting.
+ */
+ uint64_t index;
+ /* Action(s) to take on unmap */
+ uint32_t action;
+ /* Event channel to notify */
+ uint32_t event_channel_port;
+};
+
+/* Clear (set to zero) the byte specified by index */
+#define UNMAP_NOTIFY_CLEAR_BYTE 0x1
+/* Send an interrupt on the indicated event channel */
+#define UNMAP_NOTIFY_SEND_EVENT 0x2
+
+#endif /* __LINUX_PUBLIC_GNTDEV_H__ */