Make videobuf pass checkpatch; minor code cleanups.
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
#include <media/videobuf-core.h>
#define MAGIC_BUFFER 0x20070728
-#define MAGIC_CHECK(is, should) do { \
- if (unlikely((is) != (should))) { \
- printk(KERN_ERR "magic mismatch: %x (expected %x)\n", is, should); \
- BUG(); } } while (0)
+#define MAGIC_CHECK(is, should) \
+ do { \
+ if (unlikely((is) != (should))) { \
+ printk(KERN_ERR \
+ "magic mismatch: %x (expected %x)\n", \
+ is, should); \
+ BUG(); \
+ } \
+ } while (0)
static int debug;
module_param(debug, int, 0644);
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
-#define dprintk(level, fmt, arg...) do { \
- if (debug >= level) \
- printk(KERN_DEBUG "vbuf: " fmt , ## arg); } while (0)
+#define dprintk(level, fmt, arg...) \
+ do { \
+ if (debug >= level) \
+ printk(KERN_DEBUG "vbuf: " fmt, ## arg); \
+ } while (0)
/* --------------------------------------------------------------------- */
}
vb = q->int_ops->alloc(q->msize);
-
if (NULL != vb) {
init_waitqueue_head(&vb->done);
- vb->magic = MAGIC_BUFFER;
+ vb->magic = MAGIC_BUFFER;
}
return vb;
}
+EXPORT_SYMBOL_GPL(videobuf_alloc);
#define WAITON_CONDITION (vb->state != VIDEOBUF_ACTIVE &&\
vb->state != VIDEOBUF_QUEUED)
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_waiton);
int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf)
return CALL(q, iolock, q, vb, fbuf);
}
+EXPORT_SYMBOL_GPL(videobuf_iolock);
-void *videobuf_queue_to_vmalloc (struct videobuf_queue *q,
- struct videobuf_buffer *buf)
+void *videobuf_queue_to_vmalloc(struct videobuf_queue *q,
+ struct videobuf_buffer *buf)
{
if (q->int_ops->vmalloc)
return q->int_ops->vmalloc(buf);
init_waitqueue_head(&q->wait);
INIT_LIST_HEAD(&q->stream);
}
+EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
/* Locking: Only usage in bttv unsafe find way to remove */
int videobuf_queue_is_busy(struct videobuf_queue *q)
}
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
/* Locking: Caller holds q->vb_lock */
void videobuf_queue_cancel(struct videobuf_queue *q)
}
INIT_LIST_HEAD(&q->stream);
}
+EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
/* --------------------------------------------------------------------- */
}
return field;
}
+EXPORT_SYMBOL_GPL(videobuf_next_field);
/* Locking: Caller holds q->vb_lock */
static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
- rc = CALL(q, mmap_free, q);
+ rc = CALL(q, mmap_free, q);
q->is_mmapped = 0;
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_free);
/* Locking: Caller holds q->vb_lock */
int __videobuf_mmap_setup(struct videobuf_queue *q,
for (i = 0; i < bcount; i++) {
q->bufs[i] = videobuf_alloc(q);
- if (q->bufs[i] == NULL)
+ if (NULL == q->bufs[i])
break;
q->bufs[i]->i = i;
if (!i)
return -ENOMEM;
- dprintk(1, "mmap setup: %d buffers, %d bytes each\n",
- i, bsize);
+ dprintk(1, "mmap setup: %d buffers, %d bytes each\n", i, bsize);
return i;
}
+EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
int videobuf_mmap_setup(struct videobuf_queue *q,
unsigned int bcount, unsigned int bsize,
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
int videobuf_reqbufs(struct videobuf_queue *q,
struct v4l2_requestbuffers *req)
q->ops->buf_setup(q, &count, &size);
dprintk(1, "reqbufs: bufs=%d, size=0x%x [%u pages total]\n",
count, size,
- (unsigned int)((count*PAGE_ALIGN(size))>>PAGE_SHIFT) );
+ (unsigned int)((count * PAGE_ALIGN(size)) >> PAGE_SHIFT));
retval = __videobuf_mmap_setup(q, count, size, req->memory);
if (retval < 0) {
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_reqbufs);
int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_querybuf);
-int videobuf_qbuf(struct videobuf_queue *q,
- struct v4l2_buffer *b)
+int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
struct videobuf_buffer *buf;
enum v4l2_field field;
retval = 0;
wake_up_interruptible_sync(&q->wait);
- done:
+done:
mutex_unlock(&q->vb_lock);
if (b->memory == V4L2_MEMORY_MMAP)
return retval;
}
-
+EXPORT_SYMBOL_GPL(videobuf_qbuf);
/* Locking: Caller holds q->vb_lock */
static int stream_next_buffer_check_queue(struct videobuf_queue *q, int noblock)
return retval;
}
-
/* Locking: Caller holds q->vb_lock */
static int stream_next_buffer(struct videobuf_queue *q,
struct videobuf_buffer **vb, int nonblocking)
}
int videobuf_dqbuf(struct videobuf_queue *q,
- struct v4l2_buffer *b, int nonblocking)
+ struct v4l2_buffer *b, int nonblocking)
{
struct videobuf_buffer *buf = NULL;
int retval;
list_del(&buf->stream);
memset(b, 0, sizeof(*b));
videobuf_status(q, b, buf, q->type);
-
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_dqbuf);
int videobuf_streamon(struct videobuf_queue *q)
{
spin_unlock_irqrestore(q->irqlock, flags);
wake_up_interruptible_sync(&q->wait);
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_streamon);
/* Locking: Caller holds q->vb_lock */
static int __videobuf_streamoff(struct videobuf_queue *q)
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_streamoff);
/* Locking: Caller holds q->vb_lock */
static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
retval = q->read_buf->size;
}
- done:
+done:
/* cleanup */
q->ops->buf_release(q, q->read_buf);
kfree(q->read_buf);
q->read_buf = NULL;
}
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_read_one);
/* Locking: Caller holds q->vb_lock */
static int __videobuf_read_start(struct videobuf_queue *q)
q->bufs[i] = NULL;
}
q->read_buf = NULL;
-
}
int videobuf_read_start(struct videobuf_queue *q)
return rc;
}
+EXPORT_SYMBOL_GPL(videobuf_read_start);
void videobuf_read_stop(struct videobuf_queue *q)
{
__videobuf_read_stop(q);
mutex_unlock(&q->vb_lock);
}
+EXPORT_SYMBOL_GPL(videobuf_read_stop);
void videobuf_stop(struct videobuf_queue *q)
{
mutex_unlock(&q->vb_lock);
}
-
+EXPORT_SYMBOL_GPL(videobuf_stop);
ssize_t videobuf_read_stream(struct videobuf_queue *q,
char __user *data, size_t count, loff_t *ppos,
break;
}
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_read_stream);
unsigned int videobuf_poll_stream(struct file *file,
struct videobuf_queue *q,
mutex_unlock(&q->vb_lock);
return rc;
}
+EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-int videobuf_mmap_mapper(struct videobuf_queue *q,
- struct vm_area_struct *vma)
+int videobuf_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
{
int retval;
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
#ifdef CONFIG_VIDEO_V4L1_COMPAT
int videobuf_cgmbuf(struct videobuf_queue *q,
EXPORT_SYMBOL_GPL(videobuf_cgmbuf);
#endif
-/* --------------------------------------------------------------------- */
-
-EXPORT_SYMBOL_GPL(videobuf_waiton);
-EXPORT_SYMBOL_GPL(videobuf_iolock);
-
-EXPORT_SYMBOL_GPL(videobuf_alloc);
-
-EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
-EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
-EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
-
-EXPORT_SYMBOL_GPL(videobuf_next_field);
-EXPORT_SYMBOL_GPL(videobuf_reqbufs);
-EXPORT_SYMBOL_GPL(videobuf_querybuf);
-EXPORT_SYMBOL_GPL(videobuf_qbuf);
-EXPORT_SYMBOL_GPL(videobuf_dqbuf);
-EXPORT_SYMBOL_GPL(videobuf_streamon);
-EXPORT_SYMBOL_GPL(videobuf_streamoff);
-
-EXPORT_SYMBOL_GPL(videobuf_read_start);
-EXPORT_SYMBOL_GPL(videobuf_read_stop);
-EXPORT_SYMBOL_GPL(videobuf_stop);
-EXPORT_SYMBOL_GPL(videobuf_read_stream);
-EXPORT_SYMBOL_GPL(videobuf_read_one);
-EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-
-EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
-EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
-EXPORT_SYMBOL_GPL(videobuf_mmap_free);
-EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
#define MAGIC_DMABUF 0x19721112
#define MAGIC_SG_MEM 0x17890714
-#define MAGIC_CHECK(is,should) if (unlikely((is) != (should))) \
- { printk(KERN_ERR "magic mismatch: %x (expected %x)\n",is,should); BUG(); }
+#define MAGIC_CHECK(is, should) \
+ if (unlikely((is) != (should))) { \
+ printk(KERN_ERR "magic mismatch: %x (expected %x)\n", \
+ is, should); \
+ BUG(); \
+ }
static int debug;
module_param(debug, int, 0644);
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
-#define dprintk(level, fmt, arg...) if (debug >= level) \
- printk(KERN_DEBUG "vbuf-sg: " fmt , ## arg)
+#define dprintk(level, fmt, arg...) \
+ if (debug >= level) \
+ printk(KERN_DEBUG "vbuf-sg: " fmt , ## arg)
/* --------------------------------------------------------------------- */
-struct scatterlist*
-videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages)
+struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages)
{
struct scatterlist *sglist;
struct page *pg;
}
return sglist;
- err:
+err:
vfree(sglist);
return NULL;
}
+EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg);
-struct scatterlist*
-videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset)
+struct scatterlist *videobuf_pages_to_sg(struct page **pages, int nr_pages,
+ int offset)
{
struct scatterlist *sglist;
int i;
}
return sglist;
- nopage:
- dprintk(2,"sgl: oops - no page\n");
+nopage:
+ dprintk(2, "sgl: oops - no page\n");
vfree(sglist);
return NULL;
- highmem:
- dprintk(2,"sgl: oops - highmem page\n");
+highmem:
+ dprintk(2, "sgl: oops - highmem page\n");
vfree(sglist);
return NULL;
}
/* --------------------------------------------------------------------- */
-struct videobuf_dmabuf *videobuf_to_dma (struct videobuf_buffer *buf)
+struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf)
{
struct videobuf_dma_sg_memory *mem = buf->priv;
BUG_ON(!mem);
return &mem->dma;
}
+EXPORT_SYMBOL_GPL(videobuf_to_dma);
void videobuf_dma_init(struct videobuf_dmabuf *dma)
{
- memset(dma,0,sizeof(*dma));
+ memset(dma, 0, sizeof(*dma));
dma->magic = MAGIC_DMABUF;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_init);
static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
int direction, unsigned long data, unsigned long size)
{
- unsigned long first,last;
+ unsigned long first, last;
int err, rw = 0;
dma->direction = direction;
last = ((data+size-1) & PAGE_MASK) >> PAGE_SHIFT;
dma->offset = data & ~PAGE_MASK;
dma->nr_pages = last-first+1;
- dma->pages = kmalloc(dma->nr_pages * sizeof(struct page*),
- GFP_KERNEL);
+ dma->pages = kmalloc(dma->nr_pages * sizeof(struct page *), GFP_KERNEL);
if (NULL == dma->pages)
return -ENOMEM;
- dprintk(1,"init user [0x%lx+0x%lx => %d pages]\n",
- data,size,dma->nr_pages);
- err = get_user_pages(current,current->mm,
+ dprintk(1, "init user [0x%lx+0x%lx => %d pages]\n",
+ data, size, dma->nr_pages);
+
+ err = get_user_pages(current, current->mm,
data & PAGE_MASK, dma->nr_pages,
rw == READ, 1, /* force */
dma->pages, NULL);
if (err != dma->nr_pages) {
dma->nr_pages = (err >= 0) ? err : 0;
- dprintk(1,"get_user_pages: err=%d [%d]\n",err,dma->nr_pages);
+ dprintk(1, "get_user_pages: err=%d [%d]\n", err, dma->nr_pages);
return err < 0 ? err : -EINVAL;
}
return 0;
unsigned long data, unsigned long size)
{
int ret;
+
down_read(¤t->mm->mmap_sem);
ret = videobuf_dma_init_user_locked(dma, direction, data, size);
up_read(¤t->mm->mmap_sem);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_init_user);
int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
int nr_pages)
{
- dprintk(1,"init kernel [%d pages]\n",nr_pages);
+ dprintk(1, "init kernel [%d pages]\n", nr_pages);
+
dma->direction = direction;
dma->vmalloc = vmalloc_32(nr_pages << PAGE_SHIFT);
if (NULL == dma->vmalloc) {
- dprintk(1,"vmalloc_32(%d pages) failed\n",nr_pages);
+ dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages);
return -ENOMEM;
}
- dprintk(1,"vmalloc is at addr 0x%08lx, size=%d\n",
+
+ dprintk(1, "vmalloc is at addr 0x%08lx, size=%d\n",
(unsigned long)dma->vmalloc,
nr_pages << PAGE_SHIFT);
- memset(dma->vmalloc,0,nr_pages << PAGE_SHIFT);
+
+ memset(dma->vmalloc, 0, nr_pages << PAGE_SHIFT);
dma->nr_pages = nr_pages;
+
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel);
int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
dma_addr_t addr, int nr_pages)
{
- dprintk(1,"init overlay [%d pages @ bus 0x%lx]\n",
- nr_pages,(unsigned long)addr);
+ dprintk(1, "init overlay [%d pages @ bus 0x%lx]\n",
+ nr_pages, (unsigned long)addr);
dma->direction = direction;
+
if (0 == addr)
return -EINVAL;
dma->bus_addr = addr;
dma->nr_pages = nr_pages;
+
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay);
-int videobuf_dma_map(struct videobuf_queue* q, struct videobuf_dmabuf *dma)
+int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
{
- MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
+ MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
BUG_ON(0 == dma->nr_pages);
if (dma->pages) {
dma->offset);
}
if (dma->vmalloc) {
- dma->sglist = videobuf_vmalloc_to_sg
- (dma->vmalloc,dma->nr_pages);
+ dma->sglist = videobuf_vmalloc_to_sg(dma->vmalloc,
+ dma->nr_pages);
}
if (dma->bus_addr) {
dma->sglist = vmalloc(sizeof(*dma->sglist));
if (NULL != dma->sglist) {
- dma->sglen = 1;
- sg_dma_address(&dma->sglist[0]) = dma->bus_addr & PAGE_MASK;
- dma->sglist[0].offset = dma->bus_addr & ~PAGE_MASK;
- sg_dma_len(&dma->sglist[0]) = dma->nr_pages * PAGE_SIZE;
+ dma->sglen = 1;
+ sg_dma_address(&dma->sglist[0]) = dma->bus_addr
+ & PAGE_MASK;
+ dma->sglist[0].offset = dma->bus_addr & ~PAGE_MASK;
+ sg_dma_len(&dma->sglist[0]) = dma->nr_pages * PAGE_SIZE;
}
}
if (NULL == dma->sglist) {
- dprintk(1,"scatterlist is NULL\n");
+ dprintk(1, "scatterlist is NULL\n");
return -ENOMEM;
}
if (!dma->bus_addr) {
dma->nr_pages, dma->direction);
if (0 == dma->sglen) {
printk(KERN_WARNING
- "%s: videobuf_map_sg failed\n",__func__);
+ "%s: videobuf_map_sg failed\n", __func__);
vfree(dma->sglist);
dma->sglist = NULL;
dma->sglen = 0;
return -ENOMEM;
}
}
+
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_map);
int videobuf_dma_sync(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
{
BUG_ON(!dma->sglen);
dma_sync_sg_for_cpu(q->dev, dma->sglist, dma->nr_pages, dma->direction);
+
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_sync);
-int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
+int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
{
MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
+
if (!dma->sglen)
return 0;
vfree(dma->sglist);
dma->sglist = NULL;
dma->sglen = 0;
+
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_unmap);
int videobuf_dma_free(struct videobuf_dmabuf *dma)
{
- MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
+ int i;
+ MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
BUG_ON(dma->sglen);
if (dma->pages) {
- int i;
- for (i=0; i < dma->nr_pages; i++)
+ for (i = 0; i < dma->nr_pages; i++)
page_cache_release(dma->pages[i]);
kfree(dma->pages);
dma->pages = NULL;
vfree(dma->vmalloc);
dma->vmalloc = NULL;
- if (dma->bus_addr) {
+ if (dma->bus_addr)
dma->bus_addr = 0;
- }
dma->direction = DMA_NONE;
+
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_dma_free);
/* --------------------------------------------------------------------- */
return videobuf_dma_map(&q, dma);
}
+EXPORT_SYMBOL_GPL(videobuf_sg_dma_map);
int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
{
return videobuf_dma_unmap(&q, dma);
}
+EXPORT_SYMBOL_GPL(videobuf_sg_dma_unmap);
/* --------------------------------------------------------------------- */
-static void
-videobuf_vm_open(struct vm_area_struct *vma)
+static void videobuf_vm_open(struct vm_area_struct *vma)
{
struct videobuf_mapping *map = vma->vm_private_data;
- dprintk(2,"vm_open %p [count=%d,vma=%08lx-%08lx]\n",map,
- map->count,vma->vm_start,vma->vm_end);
+ dprintk(2, "vm_open %p [count=%d,vma=%08lx-%08lx]\n", map,
+ map->count, vma->vm_start, vma->vm_end);
+
map->count++;
}
-static void
-videobuf_vm_close(struct vm_area_struct *vma)
+static void videobuf_vm_close(struct vm_area_struct *vma)
{
struct videobuf_mapping *map = vma->vm_private_data;
struct videobuf_queue *q = map->q;
struct videobuf_dma_sg_memory *mem;
int i;
- dprintk(2,"vm_close %p [count=%d,vma=%08lx-%08lx]\n",map,
- map->count,vma->vm_start,vma->vm_end);
+ dprintk(2, "vm_close %p [count=%d,vma=%08lx-%08lx]\n", map,
+ map->count, vma->vm_start, vma->vm_end);
map->count--;
if (0 == map->count) {
- dprintk(1,"munmap %p q=%p\n",map,q);
+ dprintk(1, "munmap %p q=%p\n", map, q);
mutex_lock(&q->vb_lock);
for (i = 0; i < VIDEO_MAX_FRAME; i++) {
if (NULL == q->bufs[i])
continue;
- mem=q->bufs[i]->priv;
-
+ mem = q->bufs[i]->priv;
if (!mem)
continue;
- MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
+ MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
if (q->bufs[i]->map != map)
continue;
q->bufs[i]->map = NULL;
q->bufs[i]->baddr = 0;
- q->ops->buf_release(q,q->bufs[i]);
+ q->ops->buf_release(q, q->bufs[i]);
}
mutex_unlock(&q->vb_lock);
kfree(map);
* now ...). Bounce buffers don't work very well for the data rates
* video capture has.
*/
-static int
-videobuf_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int videobuf_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct page *page;
- dprintk(3,"fault: fault @ %08lx [vma %08lx-%08lx]\n",
- (unsigned long)vmf->virtual_address,vma->vm_start,vma->vm_end);
+ dprintk(3, "fault: fault @ %08lx [vma %08lx-%08lx]\n",
+ (unsigned long)vmf->virtual_address,
+ vma->vm_start, vma->vm_end);
+
page = alloc_page(GFP_USER | __GFP_DMA32);
if (!page)
return VM_FAULT_OOM;
clear_user_highpage(page, (unsigned long)vmf->virtual_address);
vmf->page = page;
+
return 0;
}
-static const struct vm_operations_struct videobuf_vm_ops =
-{
- .open = videobuf_vm_open,
- .close = videobuf_vm_close,
- .fault = videobuf_vm_fault,
+static const struct vm_operations_struct videobuf_vm_ops = {
+ .open = videobuf_vm_open,
+ .close = videobuf_vm_close,
+ .fault = videobuf_vm_fault,
};
/* ---------------------------------------------------------------------
struct videobuf_dma_sg_memory *mem;
struct videobuf_buffer *vb;
- vb = kzalloc(size+sizeof(*mem),GFP_KERNEL);
+ vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
if (!vb)
return vb;
- mem = vb->priv = ((char *)vb)+size;
- mem->magic=MAGIC_SG_MEM;
+ mem = vb->priv = ((char *)vb) + size;
+ mem->magic = MAGIC_SG_MEM;
videobuf_dma_init(&mem->dma);
- dprintk(1,"%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
- __func__,vb,(long)sizeof(*vb),(long)size-sizeof(*vb),
- mem,(long)sizeof(*mem));
+ dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
+ __func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb),
+ mem, (long)sizeof(*mem));
return vb;
}
-static void *__videobuf_to_vmalloc (struct videobuf_buffer *buf)
+static void *__videobuf_to_vmalloc(struct videobuf_buffer *buf)
{
struct videobuf_dma_sg_memory *mem = buf->priv;
BUG_ON(!mem);
return mem->dma.vmalloc;
}
-static int __videobuf_iolock (struct videobuf_queue* q,
- struct videobuf_buffer *vb,
- struct v4l2_framebuffer *fbuf)
+static int __videobuf_iolock(struct videobuf_queue *q,
+ struct videobuf_buffer *vb,
+ struct v4l2_framebuffer *fbuf)
{
- int err,pages;
+ int err, pages;
dma_addr_t bus;
struct videobuf_dma_sg_memory *mem = vb->priv;
BUG_ON(!mem);
if (0 == vb->baddr) {
/* no userspace addr -- kernel bounce buffer */
pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
- err = videobuf_dma_init_kernel( &mem->dma,
- DMA_FROM_DEVICE,
- pages );
+ err = videobuf_dma_init_kernel(&mem->dma,
+ DMA_FROM_DEVICE,
+ pages);
if (0 != err)
return err;
} else if (vb->memory == V4L2_MEMORY_USERPTR) {
/* dma directly to userspace */
- err = videobuf_dma_init_user( &mem->dma,
- DMA_FROM_DEVICE,
- vb->baddr,vb->bsize );
+ err = videobuf_dma_init_user(&mem->dma,
+ DMA_FROM_DEVICE,
+ vb->baddr, vb->bsize);
if (0 != err)
return err;
} else {
{
struct videobuf_dma_sg_memory *mem = buf->priv;
BUG_ON(!mem);
- MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
+ MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
- return videobuf_dma_sync(q,&mem->dma);
+ return videobuf_dma_sync(q, &mem->dma);
}
static int __videobuf_mmap_free(struct videobuf_queue *q)
{
struct videobuf_dma_sg_memory *mem;
struct videobuf_mapping *map;
- unsigned int first,last,size,i;
+ unsigned int first, last, size, i;
int retval;
retval = -EINVAL;
if (!(vma->vm_flags & VM_WRITE)) {
- dprintk(1,"mmap app bug: PROT_WRITE please\n");
+ dprintk(1, "mmap app bug: PROT_WRITE please\n");
goto done;
}
if (!(vma->vm_flags & VM_SHARED)) {
- dprintk(1,"mmap app bug: MAP_SHARED please\n");
+ dprintk(1, "mmap app bug: MAP_SHARED please\n");
goto done;
}
for (first = 0; first < VIDEO_MAX_FRAME; first++) {
if (NULL == q->bufs[first])
continue;
- mem=q->bufs[first]->priv;
+ mem = q->bufs[first]->priv;
BUG_ON(!mem);
- MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
+ MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
if (V4L2_MEMORY_MMAP != q->bufs[first]->memory)
continue;
break;
}
if (VIDEO_MAX_FRAME == first) {
- dprintk(1,"mmap app bug: offset invalid [offset=0x%lx]\n",
+ dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n",
(vma->vm_pgoff << PAGE_SHIFT));
goto done;
}
break;
}
if (VIDEO_MAX_FRAME == last) {
- dprintk(1,"mmap app bug: size invalid [size=0x%lx]\n",
+ dprintk(1, "mmap app bug: size invalid [size=0x%lx]\n",
(vma->vm_end - vma->vm_start));
goto done;
}
/* create mapping + update buffer list */
retval = -ENOMEM;
- map = kmalloc(sizeof(struct videobuf_mapping),GFP_KERNEL);
+ map = kmalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
if (NULL == map)
goto done;
vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
vma->vm_flags &= ~VM_IO; /* using shared anonymous pages */
vma->vm_private_data = map;
- dprintk(1,"mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n",
- map,q,vma->vm_start,vma->vm_end,vma->vm_pgoff,first,last);
+ dprintk(1, "mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n",
+ map, q, vma->vm_start, vma->vm_end, vma->vm_pgoff, first, last);
retval = 0;
- done:
+done:
return retval;
}
-static int __videobuf_copy_to_user ( struct videobuf_queue *q,
+static int __videobuf_copy_to_user(struct videobuf_queue *q,
char __user *data, size_t count,
- int nonblocking )
+ int nonblocking)
{
struct videobuf_dma_sg_memory *mem = q->read_buf->priv;
BUG_ON(!mem);
- MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
+ MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
/* copy to userspace */
if (count > q->read_buf->size - q->read_off)
return count;
}
-static int __videobuf_copy_stream ( struct videobuf_queue *q,
+static int __videobuf_copy_stream(struct videobuf_queue *q,
char __user *data, size_t count, size_t pos,
- int vbihack, int nonblocking )
+ int vbihack, int nonblocking)
{
- unsigned int *fc;
+ unsigned int *fc;
struct videobuf_dma_sg_memory *mem = q->read_buf->priv;
BUG_ON(!mem);
- MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
+ MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
if (vbihack) {
/* dirty, undocumented hack -- pass the frame counter
- * within the last four bytes of each vbi data block.
- * We need that one to maintain backward compatibility
- * to all vbi decoding software out there ... */
- fc = (unsigned int*)mem->dma.vmalloc;
- fc += (q->read_buf->size>>2) -1;
+ * within the last four bytes of each vbi data block.
+ * We need that one to maintain backward compatibility
+ * to all vbi decoding software out there ... */
+ fc = (unsigned int *)mem->dma.vmalloc;
+ fc += (q->read_buf->size >> 2) - 1;
*fc = q->read_buf->field_count >> 1;
- dprintk(1,"vbihack: %d\n",*fc);
+ dprintk(1, "vbihack: %d\n", *fc);
}
/* copy stuff using the common method */
- count = __videobuf_copy_to_user (q,data,count,nonblocking);
+ count = __videobuf_copy_to_user(q, data, count, nonblocking);
- if ( (count==-EFAULT) && (0 == pos) )
+ if ((count == -EFAULT) && (0 == pos))
return -EFAULT;
return count;
return videobuf_alloc(&q);
}
+EXPORT_SYMBOL_GPL(videobuf_sg_alloc);
-void videobuf_queue_sg_init(struct videobuf_queue* q,
+void videobuf_queue_sg_init(struct videobuf_queue *q,
const struct videobuf_queue_ops *ops,
struct device *dev,
spinlock_t *irqlock,
videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
priv, &sg_ops);
}
-
-/* --------------------------------------------------------------------- */
-
-EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg);
-
-EXPORT_SYMBOL_GPL(videobuf_to_dma);
-EXPORT_SYMBOL_GPL(videobuf_dma_init);
-EXPORT_SYMBOL_GPL(videobuf_dma_init_user);
-EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel);
-EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay);
-EXPORT_SYMBOL_GPL(videobuf_dma_map);
-EXPORT_SYMBOL_GPL(videobuf_dma_sync);
-EXPORT_SYMBOL_GPL(videobuf_dma_unmap);
-EXPORT_SYMBOL_GPL(videobuf_dma_free);
-
-EXPORT_SYMBOL_GPL(videobuf_sg_dma_map);
-EXPORT_SYMBOL_GPL(videobuf_sg_dma_unmap);
-EXPORT_SYMBOL_GPL(videobuf_sg_alloc);
-
EXPORT_SYMBOL_GPL(videobuf_queue_sg_init);
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
#define MAGIC_DMABUF 0x17760309
#define MAGIC_VMAL_MEM 0x18221223
-#define MAGIC_CHECK(is,should) if (unlikely((is) != (should))) \
- { printk(KERN_ERR "magic mismatch: %x (expected %x)\n",is,should); BUG(); }
+#define MAGIC_CHECK(is, should) \
+ if (unlikely((is) != (should))) { \
+ printk(KERN_ERR "magic mismatch: %x (expected %x)\n", \
+ is, should); \
+ BUG(); \
+ }
static int debug;
module_param(debug, int, 0644);
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
-#define dprintk(level, fmt, arg...) if (debug >= level) \
- printk(KERN_DEBUG "vbuf-vmalloc: " fmt , ## arg)
+#define dprintk(level, fmt, arg...) \
+ if (debug >= level) \
+ printk(KERN_DEBUG "vbuf-vmalloc: " fmt , ## arg)
/***************************************************************************/
-static void
-videobuf_vm_open(struct vm_area_struct *vma)
+static void videobuf_vm_open(struct vm_area_struct *vma)
{
struct videobuf_mapping *map = vma->vm_private_data;
- dprintk(2,"vm_open %p [count=%u,vma=%08lx-%08lx]\n",map,
- map->count,vma->vm_start,vma->vm_end);
+ dprintk(2, "vm_open %p [count=%u,vma=%08lx-%08lx]\n", map,
+ map->count, vma->vm_start, vma->vm_end);
map->count++;
}
struct videobuf_queue *q = map->q;
int i;
- dprintk(2,"vm_close %p [count=%u,vma=%08lx-%08lx]\n", map,
+ dprintk(2, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", map,
map->count, vma->vm_start, vma->vm_end);
map->count--;
return;
}
-static const struct vm_operations_struct videobuf_vm_ops =
-{
+static const struct vm_operations_struct videobuf_vm_ops = {
.open = videobuf_vm_open,
.close = videobuf_vm_close,
};
struct videobuf_vmalloc_memory *mem;
struct videobuf_buffer *vb;
- vb = kzalloc(size+sizeof(*mem),GFP_KERNEL);
+ vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
if (!vb)
return vb;
- mem = vb->priv = ((char *)vb)+size;
- mem->magic=MAGIC_VMAL_MEM;
+ mem = vb->priv = ((char *)vb) + size;
+ mem->magic = MAGIC_VMAL_MEM;
- dprintk(1,"%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
- __func__,vb,(long)sizeof(*vb),(long)size-sizeof(*vb),
- mem,(long)sizeof(*mem));
+ dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
+ __func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb),
+ mem, (long)sizeof(*mem));
return vb;
}
-static int __videobuf_iolock (struct videobuf_queue* q,
- struct videobuf_buffer *vb,
- struct v4l2_framebuffer *fbuf)
+static int __videobuf_iolock(struct videobuf_queue *q,
+ struct videobuf_buffer *vb,
+ struct v4l2_framebuffer *fbuf)
{
struct videobuf_vmalloc_memory *mem = vb->priv;
int pages;
dprintk(1, "%s memory method USERPTR\n", __func__);
-#if 1
if (vb->baddr) {
printk(KERN_ERR "USERPTR is currently not supported\n");
return -EINVAL;
}
-#endif
/* The only USERPTR currently supported is the one needed for
- read() method.
+ * read() method.
*/
mem->vmalloc = vmalloc_user(pages);
/* Try to remap memory */
rc = remap_vmalloc_range(mem->vma, (void *)vb->baddr, 0);
if (rc < 0) {
- printk(KERN_ERR "mmap: remap failed with error %d. ", rc);
+ printk(KERN_ERR "mmap: remap failed with error %d", rc);
return -ENOMEM;
}
#endif
break;
}
if (VIDEO_MAX_FRAME == first) {
- dprintk(1,"mmap app bug: offset invalid [offset=0x%lx]\n",
+ dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n",
(vma->vm_pgoff << PAGE_SHIFT));
return -EINVAL;
}
printk(KERN_ERR "vmalloc (%d pages) failed\n", pages);
goto error;
}
- dprintk(1, "vmalloc is at addr %p (%d pages)\n",
- mem->vmalloc, pages);
+ dprintk(1, "vmalloc is at addr %p (%d pages)\n", mem->vmalloc, pages);
/* Try to remap memory */
retval = remap_vmalloc_range(vma, mem->vmalloc, 0);
vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
vma->vm_private_data = map;
- dprintk(1,"mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
+ dprintk(1, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
map, q, vma->vm_start, vma->vm_end,
(long int) q->bufs[first]->bsize,
vma->vm_pgoff, first);
return -ENOMEM;
}
-static int __videobuf_copy_to_user ( struct videobuf_queue *q,
- char __user *data, size_t count,
- int nonblocking )
+static int __videobuf_copy_to_user(struct videobuf_queue *q,
+ char __user *data, size_t count,
+ int nonblocking)
{
- struct videobuf_vmalloc_memory *mem=q->read_buf->priv;
- BUG_ON (!mem);
- MAGIC_CHECK(mem->magic,MAGIC_VMAL_MEM);
+ struct videobuf_vmalloc_memory *mem = q->read_buf->priv;
+ BUG_ON(!mem);
+ MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
- BUG_ON (!mem->vmalloc);
+ BUG_ON(!mem->vmalloc);
/* copy to userspace */
if (count > q->read_buf->size - q->read_off)
return count;
}
-static int __videobuf_copy_stream ( struct videobuf_queue *q,
- char __user *data, size_t count, size_t pos,
- int vbihack, int nonblocking )
+static int __videobuf_copy_stream(struct videobuf_queue *q,
+ char __user *data, size_t count, size_t pos,
+ int vbihack, int nonblocking)
{
- unsigned int *fc;
- struct videobuf_vmalloc_memory *mem=q->read_buf->priv;
- BUG_ON (!mem);
- MAGIC_CHECK(mem->magic,MAGIC_VMAL_MEM);
+ unsigned int *fc;
+ struct videobuf_vmalloc_memory *mem = q->read_buf->priv;
+ BUG_ON(!mem);
+ MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
if (vbihack) {
/* dirty, undocumented hack -- pass the frame counter
* within the last four bytes of each vbi data block.
* We need that one to maintain backward compatibility
* to all vbi decoding software out there ... */
- fc = (unsigned int*)mem->vmalloc;
- fc += (q->read_buf->size>>2) -1;
+ fc = (unsigned int *)mem->vmalloc;
+ fc += (q->read_buf->size >> 2) - 1;
*fc = q->read_buf->field_count >> 1;
- dprintk(1,"vbihack: %d\n",*fc);
+ dprintk(1, "vbihack: %d\n", *fc);
}
/* copy stuff using the common method */
- count = __videobuf_copy_to_user (q,data,count,nonblocking);
+ count = __videobuf_copy_to_user(q, data, count, nonblocking);
- if ( (count==-EFAULT) && (0 == pos) )
+ if ((count == -EFAULT) && (0 == pos))
return -EFAULT;
return count;
.vmalloc = videobuf_to_vmalloc,
};
-void videobuf_queue_vmalloc_init(struct videobuf_queue* q,
+void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
const struct videobuf_queue_ops *ops,
struct device *dev,
spinlock_t *irqlock,
videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
priv, &qops);
}
-
EXPORT_SYMBOL_GPL(videobuf_queue_vmalloc_init);
-void *videobuf_to_vmalloc (struct videobuf_buffer *buf)
+void *videobuf_to_vmalloc(struct videobuf_buffer *buf)
{
- struct videobuf_vmalloc_memory *mem=buf->priv;
- BUG_ON (!mem);
- MAGIC_CHECK(mem->magic,MAGIC_VMAL_MEM);
+ struct videobuf_vmalloc_memory *mem = buf->priv;
+ BUG_ON(!mem);
+ MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
return mem->vmalloc;
}
EXPORT_SYMBOL_GPL(videobuf_to_vmalloc);
-void videobuf_vmalloc_free (struct videobuf_buffer *buf)
+void videobuf_vmalloc_free(struct videobuf_buffer *buf)
{
struct videobuf_vmalloc_memory *mem = buf->priv;
}
EXPORT_SYMBOL_GPL(videobuf_vmalloc_free);
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
void *(*alloc) (size_t size);
void *(*vmalloc) (struct videobuf_buffer *buf);
- int (*iolock) (struct videobuf_queue* q,
+ int (*iolock) (struct videobuf_queue *q,
struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf);
int (*mmap) (struct videobuf_queue *q,
unsigned int *count,
unsigned int *size,
enum v4l2_memory memory);
- int (*sync) (struct videobuf_queue* q,
+ int (*sync) (struct videobuf_queue *q,
struct videobuf_buffer *buf);
int (*video_copy_to_user)(struct videobuf_queue *q,
char __user *data,
};
int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr);
-int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
+int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf);
void *videobuf_alloc(struct videobuf_queue* q);
/* Used on videobuf-dvb */
-void *videobuf_queue_to_vmalloc (struct videobuf_queue* q,
- struct videobuf_buffer *buf);
+void *videobuf_queue_to_vmalloc(struct videobuf_queue *q,
+ struct videobuf_buffer *buf);
void videobuf_queue_core_init(struct videobuf_queue *q,
const struct videobuf_queue_ops *ops,
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2
*/
+#ifndef _VIDEOBUF_DMA_SG_H
+#define _VIDEOBUF_DMA_SG_H
#include <media/videobuf-core.h>
* block (NULL on errors). Memory for the scatterlist is allocated
* using kmalloc. The caller must free the memory.
*/
-struct scatterlist* videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages);
+struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages);
/*
* Return a scatterlist for a an array of userpages (NULL on errors).
* Memory for the scatterlist is allocated using kmalloc. The caller
* must free the memory.
*/
-struct scatterlist* videobuf_pages_to_sg(struct page **pages, int nr_pages,
+struct scatterlist *videobuf_pages_to_sg(struct page **pages, int nr_pages,
int offset);
/* --------------------------------------------------------------------- */
int direction;
};
-struct videobuf_dma_sg_memory
-{
+struct videobuf_dma_sg_memory {
u32 magic;
/* for mmap'ed buffers */
dma_addr_t addr, int nr_pages);
int videobuf_dma_free(struct videobuf_dmabuf *dma);
-int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma);
-int videobuf_dma_sync(struct videobuf_queue* q,struct videobuf_dmabuf *dma);
-int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma);
-struct videobuf_dmabuf *videobuf_to_dma (struct videobuf_buffer *buf);
+int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
+int videobuf_dma_sync(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
+int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
+struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf);
void *videobuf_sg_alloc(size_t size);
-void videobuf_queue_sg_init(struct videobuf_queue* q,
+void videobuf_queue_sg_init(struct videobuf_queue *q,
const struct videobuf_queue_ops *ops,
struct device *dev,
spinlock_t *irqlock,
unsigned int msize,
void *priv);
- /*FIXME: these variants are used only on *-alsa code, where videobuf is
- * used without queue
- */
+/*FIXME: these variants are used only on *-alsa code, where videobuf is
+ * used without queue
+ */
int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
+#endif /* _VIDEOBUF_DMA_SG_H */
+
/* --------------------------------------------------------------------- */
-struct videobuf_vmalloc_memory
-{
+struct videobuf_vmalloc_memory {
u32 magic;
void *vmalloc;
- /* remap_vmalloc_range seems to need to run after mmap() on some cases */
+ /* remap_vmalloc_range seems to need to run
+ * after mmap() on some cases */
struct vm_area_struct *vma;
};
-void videobuf_queue_vmalloc_init(struct videobuf_queue* q,
+void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
const struct videobuf_queue_ops *ops,
struct device *dev,
spinlock_t *irqlock,
unsigned int msize,
void *priv);
-void *videobuf_to_vmalloc (struct videobuf_buffer *buf);
+void *videobuf_to_vmalloc(struct videobuf_buffer *buf);
-void videobuf_vmalloc_free (struct videobuf_buffer *buf);
+void videobuf_vmalloc_free(struct videobuf_buffer *buf);
#endif
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