Commit c7b0ac05 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab

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: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent b2fd16b4
......@@ -50,14 +50,15 @@ void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
/********************************************************************************/
/* common dma functions */
void saa7146_dma_free(struct saa7146_dev *dev,struct saa7146_buf *buf)
void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
struct saa7146_buf *buf)
{
DEB_EE(("dev:%p, buf:%p\n",dev,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;
}
......
......@@ -236,7 +236,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,e
}
if (buf->vb.size != size)
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
if (STATE_NEEDS_INIT == buf->vb.state) {
buf->vb.width = llength;
......@@ -247,7 +247,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,e
saa7146_pgtable_free(dev->pci, &buf->pt[2]);
saa7146_pgtable_alloc(dev->pci, &buf->pt[2]);
err = videobuf_iolock(dev->pci,&buf->vb, NULL);
err = videobuf_iolock(q,&buf->vb, NULL);
if (err)
goto oops;
err = saa7146_pgtable_build_single(dev->pci, &buf->pt[2], buf->vb.dma.sglist, buf->vb.dma.sglen);
......@@ -261,7 +261,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,e
oops:
DEB_VBI(("error out.\n"));
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
return err;
}
......@@ -301,7 +301,7 @@ static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
struct saa7146_buf *buf = (struct saa7146_buf *)vb;
DEB_VBI(("vb:%p\n",vb));
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
}
static struct videobuf_queue_ops vbi_qops = {
......
......@@ -1275,7 +1275,7 @@ static int buffer_prepare(struct videobuf_queue *q,
buf->vb.field != field ||
buf->vb.field != fh->video_fmt.field ||
buf->fmt != &fh->video_fmt) {
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
}
if (STATE_NEEDS_INIT == buf->vb.state) {
......@@ -1304,7 +1304,7 @@ static int buffer_prepare(struct videobuf_queue *q,
saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
}
err = videobuf_iolock(dev->pci,&buf->vb, &vv->ov_fb);
err = videobuf_iolock(q,&buf->vb, &vv->ov_fb);
if (err)
goto oops;
err = saa7146_pgtable_build(dev,buf);
......@@ -1318,7 +1318,7 @@ static int buffer_prepare(struct videobuf_queue *q,
oops:
DEB_D(("error out.\n"));
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
return err;
}
......@@ -1363,7 +1363,7 @@ static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
struct saa7146_buf *buf = (struct saa7146_buf *)vb;
DEB_CAP(("vbuf:%p\n",vb));
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
}
static struct videobuf_queue_ops video_qops = {
......
......@@ -1397,7 +1397,7 @@ bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh,
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 @@ bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh,
/* ----------------------------------------------------------------------- */
/* 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 @@ static int bttv_prepare_buffer(struct bttv *btv, struct bttv_buffer *buf,
/* 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 @@ static int bttv_prepare_buffer(struct bttv *btv, struct bttv_buffer *buf,
return 0;
fail:
bttv_dma_free(btv,buf);
bttv_dma_free(q,btv,buf);
return rc;
}
......@@ -1486,7 +1487,7 @@ buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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 @@ static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
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 @@ static int bttv_do_ioctl(struct inode *inode, struct file *file,
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 @@ static int bttv_do_ioctl(struct inode *inode, struct file *file,
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;
......
......@@ -509,11 +509,11 @@ bttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc,
}
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);
......
......@@ -96,7 +96,7 @@ static int vbi_buffer_prepare(struct videobuf_queue *q,
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 @@ static int vbi_buffer_prepare(struct videobuf_queue *q,
return 0;
fail:
bttv_dma_free(btv,buf);
bttv_dma_free(q,btv,buf);
return rc;
}
......@@ -136,7 +136,7 @@ static void vbi_buffer_release(struct videobuf_queue *q, struct videobuf_buffer
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 = {
......
......@@ -190,7 +190,8 @@ int bttv_buffer_activate_video(struct bttv *btv,
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,
......
......@@ -303,7 +303,7 @@ static int dsp_buffer_free(snd_cx88_card_t *chip)
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 @@ static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
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,
......
......@@ -1341,7 +1341,7 @@ bb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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 @@ bb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
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 = {
......
......@@ -213,13 +213,13 @@ int cx88_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
}
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;
}
......
......@@ -90,7 +90,7 @@ static int dvb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
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 = {
......
......@@ -163,8 +163,8 @@ static int cx8802_restart_queue(struct cx8802_dev *dev,
/* ------------------------------------------------------------------ */
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 @@ int cx8802_buf_prepare(struct cx8802_dev *dev, struct cx88_buffer *buf,
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 @@ int cx8802_buf_prepare(struct cx8802_dev *dev, struct cx88_buffer *buf,
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__);
......
......@@ -175,7 +175,7 @@ vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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 @@ vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
return 0;
fail:
cx88_free_buffer(dev->pci,buf);
cx88_free_buffer(q,buf);
return rc;
}
......@@ -227,9 +227,8 @@ vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
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 = {
......
......@@ -564,7 +564,7 @@ buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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 @@ buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
return 0;
fail:
cx88_free_buffer(dev->pci,buf);
cx88_free_buffer(q,buf);
return rc;
}
......@@ -671,9 +671,8 @@ buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
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 = {
......@@ -1251,10 +1250,18 @@ int cx88_do_ioctl(struct inode *inode, struct file *file, int radio,
{
int err;
dprintk(2, "CORE IOCTL: 0x%x\n", cmd );
if (video_debug > 1)
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 ---------- */
case VIDIOC_ENUMSTD:
......@@ -1460,7 +1467,19 @@ int cx88_do_ioctl(struct inode *inode, struct file *file, int radio,
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;
}
/* ----------------------------------------------------------- */
......
......@@ -485,7 +485,7 @@ extern int
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 @@ void cx88_ir_irq(struct cx88_core *core);
/* ----------------------------------------------------------- */
/* 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);
......
......@@ -507,7 +507,7 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
/* 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 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
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 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
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 @@ static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
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;
}
......
......@@ -254,12 +254,12 @@ void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
/* ------------------------------------------------------------------ */
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;
}
......
......@@ -124,7 +124,7 @@ static int dsp_rec_start(struct saa7134_dev *dev)
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 @@ static int dsp_rec_start(struct saa7134_dev *dev)
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 @@ static int dsp_rec_stop(struct saa7134_dev *dev)
/* 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;
}
......
......@@ -89,7 +89,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
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 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
return 0;
oops:
saa7134_dma_free(dev,buf);
saa7134_dma_free(q,buf);
return err;
}
......@@ -152,10 +152,9 @@ static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
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 = {
......
......@@ -135,7 +135,7 @@ static int buffer_prepare(struct videobuf_queue *q,
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 @@ static int buffer_prepare(struct videobuf_queue *q,
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 @@ static int buffer_prepare(struct videobuf_queue *q,
return 0;
oops:
saa7134_dma_free(dev,buf);
saa7134_dma_free(q,buf);
return err;
}
......@@ -190,11 +190,9 @@ static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
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 = {
......
......@@ -993,7 +993,7 @@ static int buffer_prepare(struct videobuf_queue *q,
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 @@ static int buffer_prepare(struct videobuf_queue *q,
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 @@ static int buffer_prepare(struct videobuf_queue *q,
return 0;
oops:
saa7134_dma_free(dev,buf);
saa7134_dma_free(q,buf);
return err;
}
......@@ -1045,10 +1045,9 @@ static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
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 = {
......
......@@ -579,7 +579,7 @@ void saa7134_buffer_finish(struct saa7134_dev *dev, struct saa7134_dmaqueue *q,
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);
......
......@@ -481,7 +481,7 @@ void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
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 @@ void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
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);
......
This diff is collapsed.
......@@ -197,7 +197,8 @@ void saa7146_buffer_finish(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,
void saa7146_buffer_next(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,int vbi);
int saa7146_buffer_queue(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, struct saa7146_buf *buf);
void saa7146_buffer_timeout(unsigned long data);
void saa7146_dma_free(struct saa7146_dev *dev,struct saa7146_buf *buf);
void saa7146_dma_free(struct saa7146_dev* dev,struct videobuf_queue *q,
struct saa7146_buf *buf);
int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv);
int saa7146_vv_release(struct saa7146_dev* dev);
......
/*
*
* 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 as
* data often must be uncompressed by the drivers).
* to touch the video data.
*
* device specific map/unmap/sync stuff now are mapped as file operations
* to allow its usage by USB and virtual devices.
*
* (c) 2001,02 Gerd Knorr <kraxel@bytesex.org>
* (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
......@@ -38,6 +43,9 @@ struct scatterlist* videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages);
struct scatterlist* videobuf_pages_to_sg(struct page **pages, int nr_pages,
int offset);
struct videobuf_buffer;
struct videobuf_queue;
/* --------------------------------------------------------------------- */
/*
......@@ -49,7 +57,7 @@ struct scatterlist* videobuf_pages_to_sg(struct page **pages, int nr_pages,
* pointer + length. The kernel version just wants the size and
* does memory allocation too using vmalloc_32().
*
* videobuf_dma_pci_*()
* videobuf_dma_*()
* see Documentation/DMA-mapping.txt, these functions to
* basically the same. The map function does also build a
* scatterlist for the buffer (and unmap frees it ...)
......@@ -86,12 +94,18 @@ int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
int nr_pages);
int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
dma_addr_t addr, int nr_pages);
int videobuf_dma_pci_map(struct pci_dev *dev, struct videobuf_dmabuf *dma);
int videobuf_dma_pci_sync(struct pci_dev *dev,
struct videobuf_dmabuf *dma);
int videobuf_dma_pci_unmap(struct pci_dev *dev, struct videobuf_dmabuf *dma);
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);
/*FIXME: these variants are used only on *-alsa code, where videobuf is
* used without queue
*/
int videobuf_pci_dma_map(struct pci_dev *pci,struct videobuf_dmabuf *dma);
int videobuf_pci_dma_unmap(struct pci_dev *pci,struct videobuf_dmabuf *dma);
/* --------------------------------------------------------------------- */
/*
......@@ -115,9 +129,6 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma);
*
*/
struct videobuf_buffer;
struct videobuf_queue;
struct videobuf_mapping {
unsigned int count;
unsigned long start;
......@@ -164,6 +175,10 @@ struct videobuf_buffer {
struct timeval ts;
};
typedef int (vb_map_sg_t)(void *dev,struct scatterlist *sglist,int nr_pages,
int direction);
struct videobuf_queue_ops {
int (*buf_setup)(struct videobuf_queue *q,
unsigned int *count, unsigned int *size);
......@@ -174,12 +189,20 @@ struct videobuf_queue_ops {
struct videobuf_buffer *vb);
void (*buf_release)(struct videobuf_queue *q,
struct videobuf_buffer *vb);
/* Helper operations - device dependent.
* If null, videobuf_init defaults all to PCI handling
*/
vb_map_sg_t *vb_map_sg;
vb_map_sg_t *vb_dma_sync_sg;
vb_map_sg_t *vb_unmap_sg;
};
struct videobuf_queue {
struct mutex lock;
spinlock_t *irqlock;
struct pci_dev *pci;
void *dev; /* on pci, points to struct pci_dev */
enum v4l2_buf_type type;
unsigned int inputs; /* for V4L2_BUF_FLAG_INPUT */
......@@ -204,12 +227,15 @@ struct videobuf_queue {
void* videobuf_alloc(unsigned int size);
int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr);
int videobuf_iolock(struct pci_dev *pci, struct videobuf_buffer *vb,
int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf);
/* Maps fops to PCI stuff */
void videobuf_queue_pci(struct videobuf_queue* q);
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,
......
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