From: Keith Packard <keithp@xxxxxxxxxx>
drmModeCreateLease
drmModeListLessees
drmModeGetLease
drmModeRevokeLease
Changes for v2:
Remove lessee id from GetLease
Remove lessor_id from ListLeases
Add revoke
Renumber to track kernel rebase on drm-next
Signed-off-by: Keith Packard <keithp@xxxxxxxxxx>
---
include/drm/drm.h | 4 +++
include/drm/drm_mode.h | 66 ++++++++++++++++++++++++++++++++++++
xf86drmMode.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++
xf86drmMode.h | 23 +++++++++++++
4 files changed, 184 insertions(+)
diff --git a/include/drm/drm.h b/include/drm/drm.h
index bf3674ae..7c736765 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -829,6 +829,10 @@ extern "C" {
#define DRM_IOCTL_MODE_ATOMIC DRM_IOWR(0xBC, struct drm_mode_atomic)
#define DRM_IOCTL_MODE_CREATEPROPBLOB DRM_IOWR(0xBD, struct drm_mode_create_blob)
#define DRM_IOCTL_MODE_DESTROYPROPBLOB DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
+#define DRM_IOCTL_MODE_CREATE_LEASE DRM_IOWR(0xC3, struct drm_mode_create_lease)
+#define DRM_IOCTL_MODE_LIST_LESSEES DRM_IOWR(0xC4, struct drm_mode_list_lessees)
+#define DRM_IOCTL_MODE_GET_LEASE DRM_IOWR(0xC5, struct drm_mode_get_lease)
+#define DRM_IOCTL_MODE_REVOKE_LEASE DRM_IOWR(0xC6, struct drm_mode_revoke_lease)
#define DRM_IOCTL_SYNCOBJ_CREATE DRM_IOWR(0xBF, struct drm_syncobj_create)
#define DRM_IOCTL_SYNCOBJ_DESTROY DRM_IOWR(0xC0, struct drm_syncobj_destroy)
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index 70571af6..a2b71614 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -677,6 +677,72 @@ struct drm_mode_destroy_blob {
__u32 blob_id;
};
+/**
+ * Lease mode resources to another user.
+ */
+struct drm_mode_create_lease {
+ /** Pointer to array of object ids (__u32) */
+ __u64 object_ids;
+ /** Number of object ids */
+ __u32 object_count;
+ /** flags for new FD (O_CLOEXEC, etc) */
+ __u32 flags;
+
+ /** Return: unique identifier for lessee. */
+ __u32 lessee_id;
+ /** Return: file descriptor to new drm_master file */
+ __u32 fd;
+};
+
+/**
+ * List lesses from a drm_master
+ */
+struct drm_mode_list_lessees {
+ /** Number of lessees.
+ * On input, provides length of the array.
+ * On output, provides total number. No
+ * more than the input number will be written
+ * back, so two calls can be used to get
+ * the size and then the data.
+ */
+ __u32 count_lessees;
+ __u32 pad;
+
+ /** Pointer to lessees.
+ * pointer to __u64 array of lessee ids
+ */
+ __u64 lessees_ptr;
+};
+
+/**
+ * Get leased objects for a lessee
+ */
+struct drm_mode_get_lease {
+ /** Number of leased objects.
+ * On input, provides length of the array.
+ * On output, provides total number. No
+ * more than the input number will be written
+ * back, so two calls can be used to get
+ * the size and then the data.
+ */
+ __u32 count_objects;
+ __u32 pad;
+
+ /** Pointer to objects.
+ * pointer to __u32 array of object ids
+ */
+ __u64 objects_ptr;
+};
+
+/**
+ * Revoke lease
+ */
+struct drm_mode_revoke_lease {
+ /** Unique ID of lessee
+ */
+ __u32 lessee_id;
+};
+
#if defined(__cplusplus)
}
#endif
diff --git a/xf86drmMode.c b/xf86drmMode.c
index d3bc20ea..affd3fb7 100644
--- a/xf86drmMode.c
+++ b/xf86drmMode.c
@@ -1485,3 +1485,94 @@ drmModeDestroyPropertyBlob(int fd, uint32_t id)
destroy.blob_id = id;
return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
}
+
+int
+drmModeCreateLease(int fd, const uint32_t *objects, int num_objects, int flags, uint32_t *lessee_id)
+{
+ struct drm_mode_create_lease create;
+ int ret;
+
+ memclear(create);
+ create.object_ids = (uintptr_t) objects;
+ create.object_count = num_objects;
+ create.flags = flags;
+
+ ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATE_LEASE, &create);
+ if (ret == 0) {
+ *lessee_id = create.lessee_id;
+ return create.fd;
+ }
+ return -errno;
+}
+
+drmModeLesseeListPtr
+drmModeListLessees(int fd)
+{
+ struct drm_mode_list_lessees list;
+ uint32_t count;
+ drmModeLesseeListPtr ret;
+
+ memclear(list);
+
+ if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list))
+ return NULL;
+
+ count = list.count_lessees;
+ ret = drmMalloc(sizeof (drmModeLesseeListRes) + count * sizeof (ret->lessees[0]));
+ if (!ret)
+ return NULL;
+
+ list.lessees_ptr = VOID2U64(&ret->lessees[0]);
+ if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list)) {
+ drmFree(ret);
+ return NULL;
+ }
+
+ ret->count = count;
+ return ret;
+}
+
+drmModeObjectListPtr
+drmModeGetLease(int fd)
+{
+ struct drm_mode_get_lease get;
+ uint32_t count;
+ drmModeObjectListPtr ret;
+
+ memclear(get);
+
+ if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get))
+ return NULL;
+
+ count = get.count_objects;
+ ret = drmMalloc(sizeof (drmModeObjectListRes) + count * sizeof (ret->objects[0]));
+ if (!ret)
+ return NULL;
+
+ get.objects_ptr = VOID2U64(&ret->objects[0]);
+ if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get)) {
+ drmFree(ret);
+ return NULL;
+ }
+
+ ret->count = count;
+ return ret;
+}
+
+int
+drmModeRevokeLease(int fd, uint32_t lessee_id)
+{
+ struct drm_mode_revoke_lease revoke;
+ int ret;
+
+ memclear(revoke);
+
+ revoke.lessee_id = lessee_id;
+
+ ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_REVOKE_LEASE, &revoke);
+ if (ret == 0)
+ return 0;
+ return -errno;
+}
+
+
diff --git a/xf86drmMode.h b/xf86drmMode.h
index 5b390d9f..b5e22720 100644
--- a/xf86drmMode.h
+++ b/xf86drmMode.h
@@ -521,6 +521,29 @@ extern int drmModeCreatePropertyBlob(int fd, const void *data, size_t size,
extern int drmModeDestroyPropertyBlob(int fd, uint32_t id);
+/*
+ * DRM mode lease APIs. These create and manage new drm_masters with
+ * access to a subset of the available DRM resources
+ */
+
+extern int drmModeCreateLease(int fd, const uint32_t *objects, int num_objects, int flags, uint32_t *lessee_id);
+
+typedef struct drmModeLesseeList {
+ uint32_t count;
+ uint32_t lessees[0];
+} drmModeLesseeListRes, *drmModeLesseeListPtr;
+
+extern drmModeLesseeListPtr drmModeListLessees(int fd);
+
+typedef struct drmModeObjectList {
+ uint32_t count;
+ uint32_t objects[0];
+} drmModeObjectListRes, *drmModeObjectListPtr;
+
+extern drmModeObjectListPtr drmModeGetLease(int fd);
+
+extern int drmModeRevokeLease(int fd, uint32_t lessee_id);
+
#if defined(__cplusplus)
}
#endif
--
2.11.0
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