V4L/DVB (3516): Make video_buf more generic
Video_buf were concerned to allow PCI devices to be used as
video capture devices. This patch extends video_buf features
by virtualizing pci-dependent functions and allowing other
type of devices to use it.
It is still DMA centric, although it may be used also by
devices that emulates scatter/gather behavior or a DMA device
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/bttv-driver.c b/drivers/media/video/bttv-driver.c
index c0415d6..2505ae5 100644
--- a/drivers/media/video/bttv-driver.c
+++ b/drivers/media/video/bttv-driver.c
@@ -1397,7 +1397,7 @@
free_btres(btv,fh,RESOURCE_OVERLAY);
if (NULL != old) {
dprintk("switch_overlay: old=%p state is %d\n",old,old->vb.state);
- bttv_dma_free(btv, old);
+ bttv_dma_free(&fh->cap,btv, old);
kfree(old);
}
dprintk("switch_overlay: done\n");
@@ -1407,7 +1407,8 @@
/* ----------------------------------------------------------------------- */
/* video4linux (1) interface */
-static int bttv_prepare_buffer(struct bttv *btv, struct bttv_buffer *buf,
+static int bttv_prepare_buffer(struct videobuf_queue *q,struct bttv *btv,
+ struct bttv_buffer *buf,
const struct bttv_format *fmt,
unsigned int width, unsigned int height,
enum v4l2_field field)
@@ -1450,7 +1451,7 @@
/* alloc risc memory */
if (STATE_NEEDS_INIT == buf->vb.state) {
redo_dma_risc = 1;
- if (0 != (rc = videobuf_iolock(btv->c.pci,&buf->vb,&btv->fbuf)))
+ if (0 != (rc = videobuf_iolock(q,&buf->vb,&btv->fbuf)))
goto fail;
}
@@ -1462,7 +1463,7 @@
return 0;
fail:
- bttv_dma_free(btv,buf);
+ bttv_dma_free(q,btv,buf);
return rc;
}
@@ -1486,7 +1487,7 @@
struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
struct bttv_fh *fh = q->priv_data;
- return bttv_prepare_buffer(fh->btv, buf, fh->fmt,
+ return bttv_prepare_buffer(q,fh->btv, buf, fh->fmt,
fh->width, fh->height, field);
}
@@ -1510,7 +1511,7 @@
struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
struct bttv_fh *fh = q->priv_data;
- bttv_dma_free(fh->btv,buf);
+ bttv_dma_free(&fh->cap,fh->btv,buf);
}
static struct videobuf_queue_ops bttv_video_qops = {
@@ -2496,7 +2497,7 @@
field = (vm->height > bttv_tvnorms[btv->tvnorm].sheight/2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_BOTTOM;
- retval = bttv_prepare_buffer(btv,buf,
+ retval = bttv_prepare_buffer(&fh->cap,btv,buf,
format_by_palette(vm->format),
vm->width,vm->height,field);
if (0 != retval)
@@ -2528,8 +2529,8 @@
retval = -EIO;
/* fall through */
case STATE_DONE:
- videobuf_dma_pci_sync(btv->c.pci,&buf->vb.dma);
- bttv_dma_free(btv,buf);
+ videobuf_dma_sync(&fh->cap,&buf->vb.dma);
+ bttv_dma_free(&fh->cap,btv,buf);
break;
default:
retval = -EINVAL;
diff --git a/drivers/media/video/bttv-risc.c b/drivers/media/video/bttv-risc.c
index 344f84e..16323a5 100644
--- a/drivers/media/video/bttv-risc.c
+++ b/drivers/media/video/bttv-risc.c
@@ -509,11 +509,11 @@
}
void
-bttv_dma_free(struct bttv *btv, struct bttv_buffer *buf)
+bttv_dma_free(struct videobuf_queue *q,struct bttv *btv, struct bttv_buffer *buf)
{
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_pci_unmap(btv->c.pci, &buf->vb.dma);
+ videobuf_dma_unmap(q, &buf->vb.dma);
videobuf_dma_free(&buf->vb.dma);
btcx_riscmem_free(btv->c.pci,&buf->bottom);
btcx_riscmem_free(btv->c.pci,&buf->top);
diff --git a/drivers/media/video/bttv-vbi.c b/drivers/media/video/bttv-vbi.c
index 72afdd6..e20ff23 100644
--- a/drivers/media/video/bttv-vbi.c
+++ b/drivers/media/video/bttv-vbi.c
@@ -96,7 +96,7 @@
return -EINVAL;
if (STATE_NEEDS_INIT == buf->vb.state) {
- if (0 != (rc = videobuf_iolock(btv->c.pci, &buf->vb, NULL)))
+ if (0 != (rc = videobuf_iolock(q, &buf->vb, NULL)))
goto fail;
if (0 != (rc = vbi_buffer_risc(btv,buf,fh->lines)))
goto fail;
@@ -109,7 +109,7 @@
return 0;
fail:
- bttv_dma_free(btv,buf);
+ bttv_dma_free(q,btv,buf);
return rc;
}
@@ -136,7 +136,7 @@
struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
dprintk("free %p\n",vb);
- bttv_dma_free(fh->btv,buf);
+ bttv_dma_free(&fh->cap,fh->btv,buf);
}
struct videobuf_queue_ops bttv_vbi_qops = {
diff --git a/drivers/media/video/bttvp.h b/drivers/media/video/bttvp.h
index 9cb72f1..12223a2 100644
--- a/drivers/media/video/bttvp.h
+++ b/drivers/media/video/bttvp.h
@@ -190,7 +190,8 @@
struct bttv_buffer_set *set);
int bttv_buffer_activate_vbi(struct bttv *btv,
struct bttv_buffer *vbi);
-void bttv_dma_free(struct bttv *btv, struct bttv_buffer *buf);
+void bttv_dma_free(struct videobuf_queue *q, struct bttv *btv,
+ struct bttv_buffer *buf);
/* overlay handling */
int bttv_overlay_risc(struct bttv *btv, struct bttv_overlay *ov,
diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c
index 3170b8f..f9d87b8 100644
--- a/drivers/media/video/cx88/cx88-alsa.c
+++ b/drivers/media/video/cx88/cx88-alsa.c
@@ -303,7 +303,7 @@
BUG_ON(!chip->dma_size);
dprintk(2,"Freeing buffer\n");
- videobuf_dma_pci_unmap(chip->pci, &chip->dma_risc);
+ videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
videobuf_dma_free(&chip->dma_risc);
btcx_riscmem_free(chip->pci,&chip->buf->risc);
kfree(chip->buf);
@@ -429,7 +429,7 @@
videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
(PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
- videobuf_dma_pci_map(chip->pci,&buf->vb.dma);
+ videobuf_pci_dma_map(chip->pci,&buf->vb.dma);
cx88_risc_databuffer(chip->pci, &buf->risc,
diff --git a/drivers/media/video/cx88/cx88-blackbird.c b/drivers/media/video/cx88/cx88-blackbird.c
index a502a4d..e100d8e 100644
--- a/drivers/media/video/cx88/cx88-blackbird.c
+++ b/drivers/media/video/cx88/cx88-blackbird.c
@@ -1341,7 +1341,7 @@
enum v4l2_field field)
{
struct cx8802_fh *fh = q->priv_data;
- return cx8802_buf_prepare(fh->dev, (struct cx88_buffer*)vb, field);
+ return cx8802_buf_prepare(q, fh->dev, (struct cx88_buffer*)vb, field);
}
static void
@@ -1354,8 +1354,7 @@
static void
bb_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
- struct cx8802_fh *fh = q->priv_data;
- cx88_free_buffer(fh->dev->pci, (struct cx88_buffer*)vb);
+ cx88_free_buffer(q, (struct cx88_buffer*)vb);
}
static struct videobuf_queue_ops blackbird_qops = {
diff --git a/drivers/media/video/cx88/cx88-core.c b/drivers/media/video/cx88/cx88-core.c
index c2cdbaf..2c3d9f1 100644
--- a/drivers/media/video/cx88/cx88-core.c
+++ b/drivers/media/video/cx88/cx88-core.c
@@ -213,13 +213,13 @@
}
void
-cx88_free_buffer(struct pci_dev *pci, struct cx88_buffer *buf)
+cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
{
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_pci_unmap(pci, &buf->vb.dma);
+ videobuf_dma_unmap(q, &buf->vb.dma);
videobuf_dma_free(&buf->vb.dma);
- btcx_riscmem_free(pci, &buf->risc);
+ btcx_riscmem_free((struct pci_dev *)q->dev, &buf->risc);
buf->vb.state = STATE_NEEDS_INIT;
}
diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c
index a9fc269..f0ea9b5 100644
--- a/drivers/media/video/cx88/cx88-dvb.c
+++ b/drivers/media/video/cx88/cx88-dvb.c
@@ -90,7 +90,7 @@
enum v4l2_field field)
{
struct cx8802_dev *dev = q->priv_data;
- return cx8802_buf_prepare(dev, (struct cx88_buffer*)vb,field);
+ return cx8802_buf_prepare(q, dev, (struct cx88_buffer*)vb,field);
}
static void dvb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
@@ -101,8 +101,7 @@
static void dvb_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
- struct cx8802_dev *dev = q->priv_data;
- cx88_free_buffer(dev->pci, (struct cx88_buffer*)vb);
+ cx88_free_buffer(q, (struct cx88_buffer*)vb);
}
static struct videobuf_queue_ops dvb_qops = {
diff --git a/drivers/media/video/cx88/cx88-mpeg.c b/drivers/media/video/cx88/cx88-mpeg.c
index c79cc1d..7d16888 100644
--- a/drivers/media/video/cx88/cx88-mpeg.c
+++ b/drivers/media/video/cx88/cx88-mpeg.c
@@ -163,8 +163,8 @@
/* ------------------------------------------------------------------ */
-int cx8802_buf_prepare(struct cx8802_dev *dev, struct cx88_buffer *buf,
- enum v4l2_field field)
+int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
+ struct cx88_buffer *buf, enum v4l2_field field)
{
int size = dev->ts_packet_size * dev->ts_packet_count;
int rc;
@@ -179,7 +179,7 @@
buf->vb.size = size;
buf->vb.field = field /*V4L2_FIELD_TOP*/;
- if (0 != (rc = videobuf_iolock(dev->pci,&buf->vb,NULL)))
+ if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
goto fail;
cx88_risc_databuffer(dev->pci, &buf->risc,
buf->vb.dma.sglist,
@@ -189,36 +189,36 @@
return 0;
fail:
- cx88_free_buffer(dev->pci,buf);
+ cx88_free_buffer(q,buf);
return rc;
}
void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
{
struct cx88_buffer *prev;
- struct cx88_dmaqueue *q = &dev->mpegq;
+ struct cx88_dmaqueue *cx88q = &dev->mpegq;
dprintk( 1, "cx8802_buf_queue\n" );
/* add jump to stopper */
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
- buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
+ buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
- if (list_empty(&q->active)) {
+ if (list_empty(&cx88q->active)) {
dprintk( 0, "queue is empty - first active\n" );
- list_add_tail(&buf->vb.queue,&q->active);
- cx8802_start_dma(dev, q, buf);
+ list_add_tail(&buf->vb.queue,&cx88q->active);
+ cx8802_start_dma(dev, cx88q, buf);
buf->vb.state = STATE_ACTIVE;
- buf->count = q->count++;
- mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
+ buf->count = cx88q->count++;
+ mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(0,"[%p/%d] %s - first active\n",
buf, buf->vb.i, __FUNCTION__);
} else {
dprintk( 1, "queue is not empty - append to active\n" );
- prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue);
- list_add_tail(&buf->vb.queue,&q->active);
+ prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
+ list_add_tail(&buf->vb.queue,&cx88q->active);
buf->vb.state = STATE_ACTIVE;
- buf->count = q->count++;
+ buf->count = cx88q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
dprintk( 1, "[%p/%d] %s - append to active\n",
buf, buf->vb.i, __FUNCTION__);
diff --git a/drivers/media/video/cx88/cx88-vbi.c b/drivers/media/video/cx88/cx88-vbi.c
index 9bc6c89..846faad 100644
--- a/drivers/media/video/cx88/cx88-vbi.c
+++ b/drivers/media/video/cx88/cx88-vbi.c
@@ -175,7 +175,7 @@
buf->vb.size = size;
buf->vb.field = V4L2_FIELD_SEQ_TB;
- if (0 != (rc = videobuf_iolock(dev->pci,&buf->vb,NULL)))
+ if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
goto fail;
cx88_risc_buffer(dev->pci, &buf->risc,
buf->vb.dma.sglist,
@@ -187,7 +187,7 @@
return 0;
fail:
- cx88_free_buffer(dev->pci,buf);
+ cx88_free_buffer(q,buf);
return rc;
}
@@ -227,9 +227,8 @@
static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
- struct cx8800_fh *fh = q->priv_data;
- cx88_free_buffer(fh->dev->pci,buf);
+ cx88_free_buffer(q,buf);
}
struct videobuf_queue_ops cx8800_vbi_qops = {
diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c
index 6c97aa74..72a417b 100644
--- a/drivers/media/video/cx88/cx88-video.c
+++ b/drivers/media/video/cx88/cx88-video.c
@@ -564,7 +564,7 @@
if (STATE_NEEDS_INIT == buf->vb.state) {
init_buffer = 1;
- if (0 != (rc = videobuf_iolock(dev->pci,&buf->vb,NULL)))
+ if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
goto fail;
}
@@ -614,7 +614,7 @@
return 0;
fail:
- cx88_free_buffer(dev->pci,buf);
+ cx88_free_buffer(q,buf);
return rc;
}
@@ -671,9 +671,8 @@
static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
- struct cx8800_fh *fh = q->priv_data;
- cx88_free_buffer(fh->dev->pci,buf);
+ cx88_free_buffer(q,buf);
}
static struct videobuf_queue_ops cx8800_video_qops = {
@@ -1251,9 +1250,17 @@
{
int err;
- dprintk(2, "CORE IOCTL: 0x%x\n", cmd );
- if (video_debug > 1)
- v4l_print_ioctl(core->name,cmd);
+ if (video_debug) {
+ if (video_debug > 1) {
+ if (_IOC_DIR(cmd) & _IOC_WRITE)
+ v4l_printk_ioctl_arg("cx88(w)",cmd, arg);
+ else if (!_IOC_DIR(cmd) & _IOC_READ) {
+ v4l_print_ioctl("cx88", cmd);
+ }
+ } else
+ v4l_print_ioctl(core->name,cmd);
+
+ }
switch (cmd) {
/* ---------- tv norms ---------- */
@@ -1460,7 +1467,19 @@
static int video_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
- return video_usercopy(inode, file, cmd, arg, video_do_ioctl);
+ int retval;
+
+ retval=video_usercopy(inode, file, cmd, arg, video_do_ioctl);
+
+ if (video_debug > 1) {
+ if (retval < 0) {
+ v4l_print_ioctl("cx88(err)", cmd);
+ printk(KERN_DEBUG "cx88(err): errcode=%d\n",retval);
+ } else if (_IOC_DIR(cmd) & _IOC_READ)
+ v4l_printk_ioctl_arg("cx88(r)",cmd, (void *)arg);
+ }
+
+ return retval;
}
/* ----------------------------------------------------------- */
diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h
index cfa8668..5b2e499 100644
--- a/drivers/media/video/cx88/cx88.h
+++ b/drivers/media/video/cx88/cx88.h
@@ -485,7 +485,7 @@
cx88_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
u32 reg, u32 mask, u32 value);
extern void
-cx88_free_buffer(struct pci_dev *pci, struct cx88_buffer *buf);
+cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf);
extern void cx88_risc_disasm(struct cx88_core *core,
struct btcx_riscmem *risc);
@@ -577,8 +577,8 @@
/* ----------------------------------------------------------- */
/* cx88-mpeg.c */
-int cx8802_buf_prepare(struct cx8802_dev *dev, struct cx88_buffer *buf,
- enum v4l2_field field);
+int cx8802_buf_prepare(struct videobuf_queue *q,struct cx8802_dev *dev,
+ struct cx88_buffer *buf, enum v4l2_field field);
void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf);
void cx8802_cancel_buffers(struct cx8802_dev *dev);
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
index aca84d2..bb3e0ba 100644
--- a/drivers/media/video/saa7134/saa7134-alsa.c
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -507,7 +507,7 @@
/* release the old buffer */
if (substream->runtime->dma_area) {
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
- videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
+ videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
dsp_buffer_free(dev);
substream->runtime->dma_area = NULL;
}
@@ -523,12 +523,12 @@
return err;
}
- if (0 != (err = videobuf_dma_pci_map(dev->pci, &dev->dmasound.dma))) {
+ if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) {
dsp_buffer_free(dev);
return err;
}
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
- videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
+ videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
dsp_buffer_free(dev);
return err;
}
@@ -537,7 +537,7 @@
dev->dmasound.dma.sglen,
0))) {
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
- videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
+ videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
dsp_buffer_free(dev);
return err;
}
@@ -571,7 +571,7 @@
if (substream->runtime->dma_area) {
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
- videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma);
+ videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
dsp_buffer_free(dev);
substream->runtime->dma_area = NULL;
}
diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c
index 58e568d..15405d1 100644
--- a/drivers/media/video/saa7134/saa7134-core.c
+++ b/drivers/media/video/saa7134/saa7134-core.c
@@ -254,12 +254,12 @@
/* ------------------------------------------------------------------ */
-void saa7134_dma_free(struct saa7134_dev *dev,struct saa7134_buf *buf)
+void saa7134_dma_free(struct videobuf_queue *q,struct saa7134_buf *buf)
{
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma);
+ videobuf_dma_unmap(q, &buf->vb.dma);
videobuf_dma_free(&buf->vb.dma);
buf->vb.state = STATE_NEEDS_INIT;
}
diff --git a/drivers/media/video/saa7134/saa7134-oss.c b/drivers/media/video/saa7134/saa7134-oss.c
index d79d05f..7aa02b3 100644
--- a/drivers/media/video/saa7134/saa7134-oss.c
+++ b/drivers/media/video/saa7134/saa7134-oss.c
@@ -124,7 +124,7 @@
unsigned long flags;
/* prepare buffer */
- if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->dmasound.dma)))
+ if (0 != (err = videobuf_pci_dma_map(dev->pci,&dev->dmasound.dma)))
return err;
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt)))
goto fail1;
@@ -213,7 +213,7 @@
fail2:
saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
fail1:
- videobuf_dma_pci_unmap(dev->pci,&dev->dmasound.dma);
+ videobuf_pci_dma_unmap(dev->pci,&dev->dmasound.dma);
return err;
}
@@ -231,7 +231,7 @@
/* unlock buffer */
saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
- videobuf_dma_pci_unmap(dev->pci,&dev->dmasound.dma);
+ videobuf_pci_dma_unmap(dev->pci,&dev->dmasound.dma);
return 0;
}
diff --git a/drivers/media/video/saa7134/saa7134-ts.c b/drivers/media/video/saa7134/saa7134-ts.c
index 470903e..60a90a2 100644
--- a/drivers/media/video/saa7134/saa7134-ts.c
+++ b/drivers/media/video/saa7134/saa7134-ts.c
@@ -89,7 +89,7 @@
return -EINVAL;
if (buf->vb.size != size) {
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
}
if (STATE_NEEDS_INIT == buf->vb.state) {
@@ -98,7 +98,7 @@
buf->vb.size = size;
buf->pt = &dev->ts.pt_ts;
- err = videobuf_iolock(dev->pci,&buf->vb,NULL);
+ err = videobuf_iolock(q,&buf->vb,NULL);
if (err)
goto oops;
err = saa7134_pgtable_build(dev->pci,buf->pt,
@@ -126,7 +126,7 @@
return 0;
oops:
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
return err;
}
@@ -152,10 +152,9 @@
static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
- struct saa7134_dev *dev = q->priv_data;
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
}
struct videobuf_queue_ops saa7134_ts_qops = {
diff --git a/drivers/media/video/saa7134/saa7134-vbi.c b/drivers/media/video/saa7134/saa7134-vbi.c
index f4aee0a..f38366a 100644
--- a/drivers/media/video/saa7134/saa7134-vbi.c
+++ b/drivers/media/video/saa7134/saa7134-vbi.c
@@ -135,7 +135,7 @@
return -EINVAL;
if (buf->vb.size != size)
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
if (STATE_NEEDS_INIT == buf->vb.state) {
buf->vb.width = llength;
@@ -143,7 +143,7 @@
buf->vb.size = size;
buf->pt = &fh->pt_vbi;
- err = videobuf_iolock(dev->pci,&buf->vb,NULL);
+ err = videobuf_iolock(q,&buf->vb,NULL);
if (err)
goto oops;
err = saa7134_pgtable_build(dev->pci,buf->pt,
@@ -159,7 +159,7 @@
return 0;
oops:
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
return err;
}
@@ -190,11 +190,9 @@
static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
- struct saa7134_fh *fh = q->priv_data;
- struct saa7134_dev *dev = fh->dev;
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
}
struct videobuf_queue_ops saa7134_vbi_qops = {
diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c
index 57a11e7..aeef80f 100644
--- a/drivers/media/video/saa7134/saa7134-video.c
+++ b/drivers/media/video/saa7134/saa7134-video.c
@@ -993,7 +993,7 @@
buf->vb.size != size ||
buf->vb.field != field ||
buf->fmt != fh->fmt) {
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
}
if (STATE_NEEDS_INIT == buf->vb.state) {
@@ -1004,7 +1004,7 @@
buf->fmt = fh->fmt;
buf->pt = &fh->pt_cap;
- err = videobuf_iolock(dev->pci,&buf->vb,&dev->ovbuf);
+ err = videobuf_iolock(q,&buf->vb,&dev->ovbuf);
if (err)
goto oops;
err = saa7134_pgtable_build(dev->pci,buf->pt,
@@ -1019,7 +1019,7 @@
return 0;
oops:
- saa7134_dma_free(dev,buf);
+ saa7134_dma_free(q,buf);
return err;
}
@@ -1045,10 +1045,9 @@
static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
- struct saa7134_fh *fh = q->priv_data;
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
- saa7134_dma_free(fh->dev,buf);
+ saa7134_dma_free(q,buf);
}
static struct videobuf_queue_ops video_qops = {
diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index ce1c2e0..104bd2e 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -579,7 +579,7 @@
unsigned int state);
void saa7134_buffer_next(struct saa7134_dev *dev, struct saa7134_dmaqueue *q);
void saa7134_buffer_timeout(unsigned long data);
-void saa7134_dma_free(struct saa7134_dev *dev,struct saa7134_buf *buf);
+void saa7134_dma_free(struct videobuf_queue *q,struct saa7134_buf *buf);
int saa7134_set_dmabits(struct saa7134_dev *dev);
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index 95a6e47..9b029e4 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -481,7 +481,7 @@
prt_names(p->memory,v4l2_memory_names),
p->m.userptr);
printk ("%s: timecode= %02d:%02d:%02d type=%d, "
- "flags=0x%08d, frames=%d, userbits=0x%08x",
+ "flags=0x%08d, frames=%d, userbits=0x%08x\n",
s,tc->hours,tc->minutes,tc->seconds,
tc->type, tc->flags, tc->frames, (__u32) tc->userbits);
break;
@@ -489,8 +489,8 @@
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *p=arg;
- printk ("%s: driver=%s, card=%s, bus=%s, version=%d, "
- "capabilities=%d\n", s,
+ printk ("%s: driver=%s, card=%s, bus=%s, version=0x%08x, "
+ "capabilities=0x%08x\n", s,
p->driver,p->card,p->bus_info,
p->version,
p->capabilities);
diff --git a/drivers/media/video/video-buf.c b/drivers/media/video/video-buf.c
index 87e9375..d2ca0f0 100644
--- a/drivers/media/video/video-buf.c
+++ b/drivers/media/video/video-buf.c
@@ -1,15 +1,20 @@
/*
*
* generic helper functions for video4linux capture buffers, to handle
- * memory management and PCI DMA. Right now bttv + saa7134 use it.
+ * memory management and PCI DMA.
+ * Right now, bttv, saa7134, saa7146 and cx88 use it.
*
* The functions expect the hardware being able to scatter gatter
* (i.e. the buffers are not linear in physical memory, but fragmented
* into PAGE_SIZE chunks). They also assume the driver does not need
- * to touch the video data (thus it is probably not useful for USB 1.1
- * as data often must be uncompressed by the drivers).
+ * to touch the video data.
+ *
+ * device specific map/unmap/sync stuff now are mapped as operations
+ * to allow its usage by USB and virtual devices.
*
* (c) 2001-2004 Gerd Knorr <kraxel@bytesex.org> [SUSE Labs]
+ * (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
+ * (c) 2006 Ted Walther and John Sokol
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -167,6 +172,9 @@
dprintk(1,"vmalloc_32(%d pages) failed\n",nr_pages);
return -ENOMEM;
}
+ 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);
dma->nr_pages = nr_pages;
return 0;
@@ -186,8 +194,10 @@
return 0;
}
-int videobuf_dma_pci_map(struct pci_dev *dev, struct videobuf_dmabuf *dma)
+int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
{
+ void *dev=q->dev;
+
MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
BUG_ON(0 == dma->nr_pages);
@@ -197,7 +207,7 @@
}
if (dma->vmalloc) {
dma->sglist = videobuf_vmalloc_to_sg
- (dma->vmalloc,dma->nr_pages);
+ (dma->vmalloc,dma->nr_pages);
}
if (dma->bus_addr) {
dma->sglist = kmalloc(sizeof(struct scatterlist), GFP_KERNEL);
@@ -212,13 +222,14 @@
dprintk(1,"scatterlist is NULL\n");
return -ENOMEM;
}
-
if (!dma->bus_addr) {
- dma->sglen = pci_map_sg(dev,dma->sglist,dma->nr_pages,
- dma->direction);
+ if (q->ops->vb_map_sg) {
+ dma->sglen = q->ops->vb_map_sg(dev,dma->sglist,
+ dma->nr_pages, dma->direction);
+ }
if (0 == dma->sglen) {
printk(KERN_WARNING
- "%s: pci_map_sg failed\n",__FUNCTION__);
+ "%s: videobuf_map_sg failed\n",__FUNCTION__);
kfree(dma->sglist);
dma->sglist = NULL;
dma->sglen = 0;
@@ -228,24 +239,31 @@
return 0;
}
-int videobuf_dma_pci_sync(struct pci_dev *dev, struct videobuf_dmabuf *dma)
+int videobuf_dma_sync(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
{
+ void *dev=q->dev;
+
MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
BUG_ON(!dma->sglen);
- if (!dma->bus_addr)
- pci_dma_sync_sg_for_cpu(dev,dma->sglist,dma->nr_pages,dma->direction);
+ if (!dma->bus_addr && q->ops->vb_dma_sync_sg)
+ q->ops->vb_dma_sync_sg(dev,dma->sglist,dma->nr_pages,
+ dma->direction);
+
return 0;
}
-int videobuf_dma_pci_unmap(struct pci_dev *dev, struct videobuf_dmabuf *dma)
+int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
{
+ void *dev=q->dev;
+
MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
if (!dma->sglen)
return 0;
- if (!dma->bus_addr)
- pci_unmap_sg(dev,dma->sglist,dma->nr_pages,dma->direction);
+ if (!dma->bus_addr && q->ops->vb_unmap_sg)
+ q->ops->vb_unmap_sg(dev,dma->sglist,dma->nr_pages,
+ dma->direction);
kfree(dma->sglist);
dma->sglist = NULL;
dma->sglen = 0;
@@ -318,7 +336,7 @@
}
int
-videobuf_iolock(struct pci_dev *pci, struct videobuf_buffer *vb,
+videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf)
{
int err,pages;
@@ -357,7 +375,7 @@
default:
BUG();
}
- err = videobuf_dma_pci_map(pci,&vb->dma);
+ err = videobuf_dma_map(q,&vb->dma);
if (0 != err)
return err;
@@ -366,9 +384,41 @@
/* --------------------------------------------------------------------- */
+void videobuf_queue_pci(struct videobuf_queue* q)
+{
+ /* If not specified, defaults to PCI map sg */
+ if (!q->ops->vb_map_sg)
+ q->ops->vb_map_sg=(vb_map_sg_t *)pci_map_sg;
+
+ if (!q->ops->vb_dma_sync_sg)
+ q->ops->vb_dma_sync_sg=(vb_map_sg_t *)pci_dma_sync_sg_for_cpu;
+ if (!q->ops->vb_unmap_sg)
+ q->ops->vb_unmap_sg=(vb_map_sg_t *)pci_unmap_sg;
+}
+
+int videobuf_pci_dma_map(struct pci_dev *pci,struct videobuf_dmabuf *dma)
+{
+ struct videobuf_queue q;
+
+ q.dev=pci;
+ q.ops->vb_map_sg=(vb_map_sg_t *)pci_unmap_sg;
+
+ return (videobuf_dma_unmap(&q,dma));
+}
+
+int videobuf_pci_dma_unmap(struct pci_dev *pci,struct videobuf_dmabuf *dma)
+{
+ struct videobuf_queue q;
+
+ q.dev=pci;
+ q.ops->vb_map_sg=(vb_map_sg_t *)pci_unmap_sg;
+
+ return (videobuf_dma_unmap(&q,dma));
+}
+
void videobuf_queue_init(struct videobuf_queue* q,
struct videobuf_queue_ops *ops,
- struct pci_dev *pci,
+ void *dev,
spinlock_t *irqlock,
enum v4l2_buf_type type,
enum v4l2_field field,
@@ -377,13 +427,15 @@
{
memset(q,0,sizeof(*q));
q->irqlock = irqlock;
- q->pci = pci;
+ q->dev = dev;
q->type = type;
q->field = field;
q->msize = msize;
q->ops = ops;
q->priv_data = priv;
+ videobuf_queue_pci(q);
+
mutex_init(&q->lock);
INIT_LIST_HEAD(&q->stream);
}
@@ -431,7 +483,8 @@
int i;
/* remove queued buffers from list */
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
for (i = 0; i < VIDEO_MAX_FRAME; i++) {
if (NULL == q->bufs[i])
continue;
@@ -440,7 +493,8 @@
q->bufs[i]->state = STATE_ERROR;
}
}
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
/* free all buffers + clear queue */
for (i = 0; i < VIDEO_MAX_FRAME; i++) {
@@ -534,19 +588,29 @@
unsigned int size,count;
int retval;
- if (req->type != q->type)
+ if (req->type != q->type) {
+ dprintk(1,"reqbufs: queue type invalid\n");
return -EINVAL;
- if (req->count < 1)
+ }
+ if (req->count < 1) {
+ dprintk(1,"reqbufs: count invalid (%d)\n",req->count);
return -EINVAL;
+ }
if (req->memory != V4L2_MEMORY_MMAP &&
req->memory != V4L2_MEMORY_USERPTR &&
- req->memory != V4L2_MEMORY_OVERLAY)
+ req->memory != V4L2_MEMORY_OVERLAY) {
+ dprintk(1,"reqbufs: memory type invalid\n");
return -EINVAL;
+ }
- if (q->streaming)
+ if (q->streaming) {
+ dprintk(1,"reqbufs: streaming already exists\n");
return -EBUSY;
- if (!list_empty(&q->stream))
+ }
+ if (!list_empty(&q->stream)) {
+ dprintk(1,"reqbufs: stream running\n");
return -EBUSY;
+ }
mutex_lock(&q->lock);
count = req->count;
@@ -559,8 +623,10 @@
count, size, (count*size)>>PAGE_SHIFT);
retval = videobuf_mmap_setup(q,count,size,req->memory);
- if (retval < 0)
+ if (retval < 0) {
+ dprintk(1,"reqbufs: mmap setup returned %d\n",retval);
goto done;
+ }
req->count = count;
@@ -572,12 +638,18 @@
int
videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
- if (unlikely(b->type != q->type))
+ if (unlikely(b->type != q->type)) {
+ dprintk(1,"querybuf: Wrong type.\n");
return -EINVAL;
- if (unlikely(b->index < 0 || b->index >= VIDEO_MAX_FRAME))
+ }
+ if (unlikely(b->index < 0 || b->index >= VIDEO_MAX_FRAME)) {
+ dprintk(1,"querybuf: index out of range.\n");
return -EINVAL;
- if (unlikely(NULL == q->bufs[b->index]))
+ }
+ if (unlikely(NULL == q->bufs[b->index])) {
+ dprintk(1,"querybuf: buffer is null.\n");
return -EINVAL;
+ }
videobuf_status(b,q->bufs[b->index],q->type);
return 0;
}
@@ -593,26 +665,40 @@
mutex_lock(&q->lock);
retval = -EBUSY;
- if (q->reading)
+ if (q->reading) {
+ dprintk(1,"qbuf: Reading running...\n");
goto done;
+ }
retval = -EINVAL;
- if (b->type != q->type)
+ if (b->type != q->type) {
+ dprintk(1,"qbuf: Wrong type.\n");
goto done;
- if (b->index < 0 || b->index >= VIDEO_MAX_FRAME)
+ }
+ if (b->index < 0 || b->index >= VIDEO_MAX_FRAME) {
+ dprintk(1,"qbuf: index out of range.\n");
goto done;
+ }
buf = q->bufs[b->index];
- if (NULL == buf)
+ if (NULL == buf) {
+ dprintk(1,"qbuf: buffer is null.\n");
goto done;
+ }
MAGIC_CHECK(buf->magic,MAGIC_BUFFER);
- if (buf->memory != b->memory)
+ if (buf->memory != b->memory) {
+ dprintk(1,"qbuf: memory type is wrong.\n");
goto done;
+ }
if (buf->state == STATE_QUEUED ||
- buf->state == STATE_ACTIVE)
+ buf->state == STATE_ACTIVE) {
+ dprintk(1,"qbuf: buffer is already queued or active.\n");
goto done;
+ }
if (b->flags & V4L2_BUF_FLAG_INPUT) {
- if (b->input >= q->inputs)
+ if (b->input >= q->inputs) {
+ dprintk(1,"qbuf: wrong input.\n");
goto done;
+ }
buf->input = b->input;
} else {
buf->input = UNSET;
@@ -620,12 +706,16 @@
switch (b->memory) {
case V4L2_MEMORY_MMAP:
- if (0 == buf->baddr)
+ if (0 == buf->baddr) {
+ dprintk(1,"qbuf: mmap requested but buffer addr is zero!\n");
goto done;
+ }
break;
case V4L2_MEMORY_USERPTR:
- if (b->length < buf->bsize)
+ if (b->length < buf->bsize) {
+ dprintk(1,"qbuf: buffer length is not enough\n");
goto done;
+ }
if (STATE_NEEDS_INIT != buf->state && buf->baddr != b->m.userptr)
q->ops->buf_release(q,buf);
buf->baddr = b->m.userptr;
@@ -634,20 +724,27 @@
buf->boff = b->m.offset;
break;
default:
+ dprintk(1,"qbuf: wrong memory type\n");
goto done;
}
+ dprintk(1,"qbuf: requesting next field\n");
field = videobuf_next_field(q);
retval = q->ops->buf_prepare(q,buf,field);
- if (0 != retval)
+ if (0 != retval) {
+ dprintk(1,"qbuf: buffer_prepare returned %d\n",retval);
goto done;
+ }
list_add_tail(&buf->stream,&q->stream);
if (q->streaming) {
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
q->ops->buf_queue(q,buf);
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
}
+ dprintk(1,"qbuf: succeded\n");
retval = 0;
done:
@@ -664,26 +761,39 @@
mutex_lock(&q->lock);
retval = -EBUSY;
- if (q->reading)
+ if (q->reading) {
+ dprintk(1,"dqbuf: Reading running...\n");
goto done;
+ }
retval = -EINVAL;
- if (b->type != q->type)
+ if (b->type != q->type) {
+ dprintk(1,"dqbuf: Wrong type.\n");
goto done;
- if (list_empty(&q->stream))
+ }
+ if (list_empty(&q->stream)) {
+ dprintk(1,"dqbuf: stream running\n");
goto done;
+ }
buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
retval = videobuf_waiton(buf, nonblocking, 1);
- if (retval < 0)
+ if (retval < 0) {
+ dprintk(1,"dqbuf: waiton returned %d\n",retval);
goto done;
+ }
switch (buf->state) {
case STATE_ERROR:
+ dprintk(1,"dqbuf: state is error\n");
retval = -EIO;
- /* fall through */
+ videobuf_dma_sync(q,&buf->dma);
+ buf->state = STATE_IDLE;
+ break;
case STATE_DONE:
- videobuf_dma_pci_sync(q->pci,&buf->dma);
+ dprintk(1,"dqbuf: state is done\n");
+ videobuf_dma_sync(q,&buf->dma);
buf->state = STATE_IDLE;
break;
default:
+ dprintk(1,"dqbuf: state invalid\n");
retval = -EINVAL;
goto done;
}
@@ -711,13 +821,15 @@
if (q->streaming)
goto done;
q->streaming = 1;
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
list_for_each(list,&q->stream) {
buf = list_entry(list, struct videobuf_buffer, stream);
if (buf->state == STATE_PREPARED)
q->ops->buf_queue(q,buf);
}
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
done:
mutex_unlock(&q->lock);
@@ -762,12 +874,14 @@
goto done;
/* start capture & wait */
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
q->ops->buf_queue(q,q->read_buf);
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
retval = videobuf_waiton(q->read_buf,0,0);
if (0 == retval) {
- videobuf_dma_pci_sync(q->pci,&q->read_buf->dma);
+ videobuf_dma_sync(q,&q->read_buf->dma);
if (STATE_ERROR == q->read_buf->state)
retval = -EIO;
else
@@ -809,6 +923,7 @@
/* need to capture a new frame */
retval = -ENOMEM;
q->read_buf = videobuf_alloc(q->msize);
+ dprintk(1,"video alloc=0x%08x\n",(unsigned int) q->read_buf);
if (NULL == q->read_buf)
goto done;
q->read_buf->memory = V4L2_MEMORY_USERPTR;
@@ -820,9 +935,11 @@
q->read_buf = NULL;
goto done;
}
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
q->ops->buf_queue(q,q->read_buf);
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
q->read_off = 0;
}
@@ -830,7 +947,7 @@
retval = videobuf_waiton(q->read_buf, nonblocking, 1);
if (0 != retval)
goto done;
- videobuf_dma_pci_sync(q->pci,&q->read_buf->dma);
+ videobuf_dma_sync(q,&q->read_buf->dma);
if (STATE_ERROR == q->read_buf->state) {
/* catch I/O errors */
@@ -887,10 +1004,12 @@
return err;
list_add_tail(&q->bufs[i]->stream, &q->stream);
}
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
for (i = 0; i < count; i++)
q->ops->buf_queue(q,q->bufs[i]);
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
q->reading = 1;
return 0;
}
@@ -985,9 +1104,11 @@
if (q->read_off == q->read_buf->size) {
list_add_tail(&q->read_buf->stream,
&q->stream);
- spin_lock_irqsave(q->irqlock,flags);
+ if (q->irqlock)
+ spin_lock_irqsave(q->irqlock,flags);
q->ops->buf_queue(q,q->read_buf);
- spin_unlock_irqrestore(q->irqlock,flags);
+ if (q->irqlock)
+ spin_unlock_irqrestore(q->irqlock,flags);
q->read_buf = NULL;
}
if (retval < 0)
@@ -1249,11 +1370,14 @@
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_pci_map);
-EXPORT_SYMBOL_GPL(videobuf_dma_pci_sync);
-EXPORT_SYMBOL_GPL(videobuf_dma_pci_unmap);
+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_pci_dma_map);
+EXPORT_SYMBOL_GPL(videobuf_pci_dma_unmap);
+
EXPORT_SYMBOL_GPL(videobuf_alloc);
EXPORT_SYMBOL_GPL(videobuf_waiton);
EXPORT_SYMBOL_GPL(videobuf_iolock);