@@ -347,7 +347,7 @@ static void __setup_offsets(struct vb2_queue *q, unsigned int n)
*
* Returns the number of buffers successfully allocated.
*/
-static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
+static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes)
{
unsigned int buffer;
@@ -370,7 +370,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
vb->memory = memory;
/* Allocate video buffer memory for the MMAP type */
- if (memory == V4L2_MEMORY_MMAP) {
+ if (memory == VB2_MEMORY_MMAP) {
ret = __vb2_buf_mem_alloc(vb);
if (ret) {
dprintk(1, "failed allocating memory for "
@@ -397,7 +397,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum v4l2_memory memory,
}
__setup_lengths(q, buffer);
- if (memory == V4L2_MEMORY_MMAP)
+ if (memory == VB2_MEMORY_MMAP)
__setup_offsets(q, buffer);
dprintk(1, "allocated %d buffers, %d plane(s) each\n",
@@ -421,9 +421,9 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
continue;
/* Free MMAP buffers or release USERPTR buffers */
- if (q->memory == V4L2_MEMORY_MMAP)
+ if (q->memory == VB2_MEMORY_MMAP)
__vb2_buf_mem_free(vb);
- else if (q->memory == V4L2_MEMORY_DMABUF)
+ else if (q->memory == VB2_MEMORY_DMABUF)
__vb2_buf_dmabuf_put(vb);
else
__vb2_buf_userptr_put(vb);
@@ -562,7 +562,7 @@ static int __verify_planes_array(struct vb2_buffer *vb, const struct v4l2_buffer
return -EINVAL;
}
- if (b->length < vb->num_planes || b->length > VIDEO_MAX_PLANES) {
+ if (b->length < vb->num_planes || b->length > VB2_MAX_PLANES) {
dprintk(1, "incorrect planes array length, "
"expected %d, got %d\n", vb->num_planes, b->length);
return -EINVAL;
@@ -586,8 +586,8 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
for (plane = 0; plane < vb->num_planes; ++plane) {
- length = (b->memory == V4L2_MEMORY_USERPTR ||
- b->memory == V4L2_MEMORY_DMABUF)
+ length = (b->memory == VB2_MEMORY_USERPTR ||
+ b->memory == VB2_MEMORY_DMABUF)
? b->m.planes[plane].length
: vb->planes[plane].length;
bytesused = b->m.planes[plane].bytesused
@@ -601,7 +601,7 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
return -EINVAL;
}
} else {
- length = (b->memory == V4L2_MEMORY_USERPTR)
+ length = (b->memory == VB2_MEMORY_USERPTR)
? b->length : vb->planes[0].length;
if (b->bytesused > length)
@@ -682,11 +682,11 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
pdst->bytesused = psrc->bytesused;
pdst->length = psrc->length;
- if (q->memory == V4L2_MEMORY_MMAP)
+ if (q->memory == VB2_MEMORY_MMAP)
pdst->m.mem_offset = psrc->m.offset;
- else if (q->memory == V4L2_MEMORY_USERPTR)
+ else if (q->memory == VB2_MEMORY_USERPTR)
pdst->m.userptr = psrc->m.userptr;
- else if (q->memory == V4L2_MEMORY_DMABUF)
+ else if (q->memory == VB2_MEMORY_DMABUF)
pdst->m.fd = psrc->m.fd;
pdst->data_offset = psrc->data_offset;
memset(pdst->reserved, 0, sizeof(pdst->reserved));
@@ -698,11 +698,11 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b)
*/
b->length = vb->planes[0].length;
b->bytesused = vb->planes[0].bytesused;
- if (q->memory == V4L2_MEMORY_MMAP)
+ if (q->memory == VB2_MEMORY_MMAP)
b->m.offset = vb->planes[0].m.offset;
- else if (q->memory == V4L2_MEMORY_USERPTR)
+ else if (q->memory == VB2_MEMORY_USERPTR)
b->m.userptr = vb->planes[0].m.userptr;
- else if (q->memory == V4L2_MEMORY_DMABUF)
+ else if (q->memory == VB2_MEMORY_DMABUF)
b->m.fd = vb->planes[0].m.fd;
}
@@ -825,10 +825,10 @@ static int __verify_dmabuf_ops(struct vb2_queue *q)
* passed to a buffer operation are compatible with the queue.
*/
static int __verify_memory_type(struct vb2_queue *q,
- enum v4l2_memory memory, enum v4l2_buf_type type)
+ enum vb2_memory memory, unsigned int type)
{
- if (memory != V4L2_MEMORY_MMAP && memory != V4L2_MEMORY_USERPTR &&
- memory != V4L2_MEMORY_DMABUF) {
+ if (memory != VB2_MEMORY_MMAP && memory != VB2_MEMORY_USERPTR &&
+ memory != VB2_MEMORY_DMABUF) {
dprintk(1, "unsupported memory type\n");
return -EINVAL;
}
@@ -842,17 +842,17 @@ static int __verify_memory_type(struct vb2_queue *q,
* Make sure all the required memory ops for given memory type
* are available.
*/
- if (memory == V4L2_MEMORY_MMAP && __verify_mmap_ops(q)) {
+ if (memory == VB2_MEMORY_MMAP && __verify_mmap_ops(q)) {
dprintk(1, "MMAP for current setup unsupported\n");
return -EINVAL;
}
- if (memory == V4L2_MEMORY_USERPTR && __verify_userptr_ops(q)) {
+ if (memory == VB2_MEMORY_USERPTR && __verify_userptr_ops(q)) {
dprintk(1, "USERPTR for current setup unsupported\n");
return -EINVAL;
}
- if (memory == V4L2_MEMORY_DMABUF && __verify_dmabuf_ops(q)) {
+ if (memory == VB2_MEMORY_DMABUF && __verify_dmabuf_ops(q)) {
dprintk(1, "DMABUF for current setup unsupported\n");
return -EINVAL;
}
@@ -908,7 +908,7 @@ static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
* are not in use and can be freed.
*/
mutex_lock(&q->mmap_lock);
- if (q->memory == V4L2_MEMORY_MMAP && __buffers_in_use(q)) {
+ if (q->memory == VB2_MEMORY_MMAP && __buffers_in_use(q)) {
mutex_unlock(&q->mmap_lock);
dprintk(1, "memory in use, cannot free\n");
return -EBUSY;
@@ -936,7 +936,7 @@ static int __reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req)
/*
* Make sure the requested values and current defaults are sane.
*/
- num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME);
+ num_buffers = min_t(unsigned int, req->count, VB2_MAX_FRAME);
num_buffers = max_t(unsigned int, num_buffers, q->min_buffers_needed);
memset(q->plane_sizes, 0, sizeof(q->plane_sizes));
memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx));
@@ -1041,7 +1041,7 @@ static int __create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create
unsigned int num_planes = 0, num_buffers, allocated_buffers;
int ret;
- if (q->num_buffers == VIDEO_MAX_FRAME) {
+ if (q->num_buffers == VB2_MAX_FRAME) {
dprintk(1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1053,7 +1053,7 @@ static int __create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create
q->waiting_for_buffers = !V4L2_TYPE_IS_OUTPUT(q->type);
}
- num_buffers = min(create->count, VIDEO_MAX_FRAME - q->num_buffers);
+ num_buffers = min(create->count, VB2_MAX_FRAME - q->num_buffers);
/*
* Ask the driver, whether the requested number of buffers, planes per
@@ -1295,7 +1295,7 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb,
unsigned int plane;
if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
- if (b->memory == V4L2_MEMORY_USERPTR) {
+ if (b->memory == VB2_MEMORY_USERPTR) {
for (plane = 0; plane < vb->num_planes; ++plane) {
planes[plane].m.userptr =
b->m.planes[plane].m.userptr;
@@ -1303,7 +1303,7 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb,
b->m.planes[plane].length;
}
}
- if (b->memory == V4L2_MEMORY_DMABUF) {
+ if (b->memory == VB2_MEMORY_DMABUF) {
for (plane = 0; plane < vb->num_planes; ++plane) {
planes[plane].m.fd =
b->m.planes[plane].m.fd;
@@ -1360,12 +1360,12 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb,
* the driver should use the allow_zero_bytesused flag to keep
* old userspace applications working.
*/
- if (b->memory == V4L2_MEMORY_USERPTR) {
+ if (b->memory == VB2_MEMORY_USERPTR) {
planes[0].m.userptr = b->m.userptr;
planes[0].length = b->length;
}
- if (b->memory == V4L2_MEMORY_DMABUF) {
+ if (b->memory == VB2_MEMORY_DMABUF) {
planes[0].m.fd = b->m.fd;
planes[0].length = b->length;
}
@@ -1425,7 +1425,7 @@ static int __qbuf_mmap(struct vb2_buffer *vb, const struct v4l2_buffer *b)
*/
static int __qbuf_userptr(struct vb2_buffer *vb, const struct v4l2_buffer *b)
{
- struct vb2_plane planes[VIDEO_MAX_PLANES];
+ struct vb2_plane planes[VB2_MAX_PLANES];
struct vb2_queue *q = vb->vb2_queue;
void *mem_priv;
unsigned int plane;
@@ -1537,7 +1537,7 @@ err:
*/
static int __qbuf_dmabuf(struct vb2_buffer *vb, const struct v4l2_buffer *b)
{
- struct vb2_plane planes[VIDEO_MAX_PLANES];
+ struct vb2_plane planes[VB2_MAX_PLANES];
struct vb2_queue *q = vb->vb2_queue;
void *mem_priv;
unsigned int plane;
@@ -1715,15 +1715,15 @@ static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b)
vbuf->sequence = 0;
switch (q->memory) {
- case V4L2_MEMORY_MMAP:
+ case VB2_MEMORY_MMAP:
ret = __qbuf_mmap(vb, b);
break;
- case V4L2_MEMORY_USERPTR:
+ case VB2_MEMORY_USERPTR:
down_read(¤t->mm->mmap_sem);
ret = __qbuf_userptr(vb, b);
up_read(¤t->mm->mmap_sem);
break;
- case V4L2_MEMORY_DMABUF:
+ case VB2_MEMORY_DMABUF:
ret = __qbuf_dmabuf(vb, b);
break;
default:
@@ -2130,7 +2130,7 @@ static void __vb2_dqbuf(struct vb2_buffer *vb)
vb->state = VB2_BUF_STATE_DEQUEUED;
/* unmap DMABUF buffer */
- if (q->memory == V4L2_MEMORY_DMABUF)
+ if (q->memory == VB2_MEMORY_DMABUF)
for (i = 0; i < vb->num_planes; ++i) {
if (!vb->planes[i].dbuf_mapped)
continue;
@@ -2469,7 +2469,7 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
int ret;
struct dma_buf *dbuf;
- if (q->memory != V4L2_MEMORY_MMAP) {
+ if (q->memory != VB2_MEMORY_MMAP) {
dprintk(1, "queue is not currently set up for mmap\n");
return -EINVAL;
}
@@ -2558,7 +2558,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
int ret;
unsigned long length;
- if (q->memory != V4L2_MEMORY_MMAP) {
+ if (q->memory != VB2_MEMORY_MMAP) {
dprintk(1, "queue is not currently set up for mmap\n");
return -EINVAL;
}
@@ -2631,7 +2631,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
void *vaddr;
int ret;
- if (q->memory != V4L2_MEMORY_MMAP) {
+ if (q->memory != VB2_MEMORY_MMAP) {
dprintk(1, "queue is not currently set up for mmap\n");
return -EINVAL;
}
@@ -2871,7 +2871,7 @@ struct vb2_fileio_data {
struct v4l2_requestbuffers req;
struct v4l2_plane p;
struct v4l2_buffer b;
- struct vb2_fileio_buf bufs[VIDEO_MAX_FRAME];
+ struct vb2_fileio_buf bufs[VB2_MAX_FRAME];
unsigned int cur_index;
unsigned int initial_index;
unsigned int q_count;
@@ -2931,7 +2931,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* to allocate buffers by itself.
*/
fileio->req.count = count;
- fileio->req.memory = V4L2_MEMORY_MMAP;
+ fileio->req.memory = VB2_MEMORY_MMAP;
fileio->req.type = q->type;
q->fileio = fileio;
ret = __reqbufs(q, &fileio->req);
@@ -18,6 +18,16 @@
#include <linux/videodev2.h>
#include <linux/dma-buf.h>
+#define VB2_MAX_FRAME (32)
+#define VB2_MAX_PLANES (8)
+
+enum vb2_memory {
+ VB2_MEMORY_UNKNOWN = 0,
+ VB2_MEMORY_MMAP = 1,
+ VB2_MEMORY_USERPTR = 2,
+ VB2_MEMORY_DMABUF = 4,
+};
+
struct vb2_alloc_ctx;
struct vb2_fileio_data;
struct vb2_threadio_data;
@@ -208,7 +218,7 @@ struct vb2_buffer {
unsigned int type;
unsigned int memory;
unsigned int num_planes;
- struct vb2_plane planes[VIDEO_MAX_PLANES];
+ struct vb2_plane planes[VB2_MAX_PLANES];
/* Private: internal use only */
enum vb2_buffer_state state;
@@ -345,12 +355,13 @@ struct vb2_ops {
void (*buf_queue)(struct vb2_buffer *vb);
};
-struct v4l2_fh;
/**
* struct vb2_queue - a videobuf queue
*
- * @type: queue type (see V4L2_BUF_TYPE_* in linux/videodev2.h
+ * @type: private buffer type whose content is defined by the vb2-core
+ * caller. For example, for V4L2, it should match
+ * the V4L2_BUF_TYPE_* in include/uapi/linux/videodev2.h
* @io_modes: supported io methods (see vb2_io_modes enum)
* @fileio_read_once: report EOF after reading the first buffer
* @fileio_write_immediately: queue buffer after each write() call
@@ -407,14 +418,14 @@ struct v4l2_fh;
* @threadio: thread io internal data, used only if thread is active
*/
struct vb2_queue {
- enum v4l2_buf_type type;
+ unsigned int type;
unsigned int io_modes;
unsigned fileio_read_once:1;
unsigned fileio_write_immediately:1;
unsigned allow_zero_bytesused:1;
struct mutex *lock;
- struct v4l2_fh *owner;
+ void *owner;
const struct vb2_ops *ops;
const struct vb2_mem_ops *mem_ops;
@@ -426,8 +437,8 @@ struct vb2_queue {
/* private: internal use only */
struct mutex mmap_lock;
- enum v4l2_memory memory;
- struct vb2_buffer *bufs[VIDEO_MAX_FRAME];
+ unsigned int memory;
+ struct vb2_buffer *bufs[VB2_MAX_FRAME];
unsigned int num_buffers;
struct list_head queued_list;
@@ -438,8 +449,8 @@ struct vb2_queue {
spinlock_t done_lock;
wait_queue_head_t done_wq;
- void *alloc_ctx[VIDEO_MAX_PLANES];
- unsigned int plane_sizes[VIDEO_MAX_PLANES];
+ void *alloc_ctx[VB2_MAX_PLANES];
+ unsigned int plane_sizes[VB2_MAX_PLANES];
unsigned int streaming:1;
unsigned int start_streaming_called:1;
@@ -5,6 +5,7 @@
#define _TRACE_V4L2_H
#include <linux/tracepoint.h>
+#include <media/videobuf2-v4l2.h>
/* Enums require being exported to userspace, for user tool parsing */
#undef EM
@@ -203,7 +204,9 @@ DECLARE_EVENT_CLASS(vb2_event_class,
TP_fast_assign(
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- __entry->minor = q->owner ? q->owner->vdev->minor : -1;
+ struct v4l2_fh *owner = (struct v4l2_fh *) q->owner;
+
+ __entry->minor = owner ? owner->vdev->minor : -1;
__entry->queued_count = q->queued_count;
__entry->owned_by_drv_count =
atomic_read(&q->owned_by_drv_count);