From: Keith Packard keithp@keithp.com
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@keithp.com --- 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