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V4L/DVB (7237): Convert videobuf-dma-sg to generic DMA API

Browse source 
videobuf-dma-sg does not need to depend on PCI. Switch it to using generic
DMA API, convert all affected drivers, relax Kconfig restriction, improve
compile-time type checking, fix some Coding Style violations while at it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Guennadi Liakhovetski 2008-04-22 14:42:13 -03:00 committed by Mauro Carvalho Chehab
parent f13613acfb
commit 0705135e59
18 changed files with 109 additions and 108 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/media/Kconfig
View file

@ -160,7 +160,7 @@ config VIDEOBUF_GEN
tristate
config VIDEOBUF_DMA_SG
depends on PCI || ARCH_PXA
depends on HAS_DMA
select VIDEOBUF_GEN
tristate

4
drivers/media/common/saa7146_vbi.c
View file

@ -407,8 +407,8 @@ static int vbi_open(struct saa7146_dev *dev, struct file *file)
fh->vbi_fmt.start[1] = 312;
fh->vbi_fmt.count[1] = 16;
videobuf_queue_pci_init(&fh->vbi_q, &vbi_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->vbi_q, &vbi_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB, // FIXME: does this really work?
sizeof(struct saa7146_buf),

4
drivers/media/common/saa7146_video.c
View file

@ -1410,8 +1410,8 @@ static int video_open(struct saa7146_dev *dev, struct file *file)
sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8;
videobuf_queue_pci_init(&fh->video_q, &video_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->video_q, &video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct saa7146_buf),

16
drivers/media/video/bt8xx/bttv-driver.c
View file

@ -2372,7 +2372,7 @@ static int setup_window(struct bttv_fh *fh, struct bttv *btv,
if (check_btres(fh, RESOURCE_OVERLAY)) {
struct bttv_buffer *new;
new = videobuf_pci_alloc(sizeof(*new));
new = videobuf_sg_alloc(sizeof(*new));
new->crop = btv->crop[!!fh->do_crop].rect;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
retval = bttv_switch_overlay(btv,fh,new);
@ -2760,7 +2760,7 @@ static int bttv_overlay(struct file *file, void *f, unsigned int on)
mutex_lock(&fh->cap.vb_lock);
if (on) {
fh->ov.tvnorm = btv->tvnorm;
new = videobuf_pci_alloc(sizeof(*new));
new = videobuf_sg_alloc(sizeof(*new));
new->crop = btv->crop[!!fh->do_crop].rect;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
} else {
@ -2834,7 +2834,7 @@ static int bttv_s_fbuf(struct file *file, void *f,
if (check_btres(fh, RESOURCE_OVERLAY)) {
struct bttv_buffer *new;
new = videobuf_pci_alloc(sizeof(*new));
new = videobuf_sg_alloc(sizeof(*new));
new->crop = btv->crop[!!fh->do_crop].rect;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
retval = bttv_switch_overlay(btv, fh, new);
@ -3184,7 +3184,7 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait)
/* need to capture a new frame */
if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM))
goto err;
fh->cap.read_buf = videobuf_pci_alloc(fh->cap.msize);
fh->cap.read_buf = videobuf_sg_alloc(fh->cap.msize);
if (NULL == fh->cap.read_buf)
goto err;
fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
@ -3251,14 +3251,14 @@ static int bttv_open(struct inode *inode, struct file *file)
fh->ov.setup_ok = 0;
v4l2_prio_open(&btv->prio,&fh->prio);
videobuf_queue_pci_init(&fh->cap, &bttv_video_qops,
btv->c.pci, &btv->s_lock,
videobuf_queue_sg_init(&fh->cap, &bttv_video_qops,
&btv->c.pci->dev, &btv->s_lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct bttv_buffer),
fh);
videobuf_queue_pci_init(&fh->vbi, &bttv_vbi_qops,
btv->c.pci, &btv->s_lock,
videobuf_queue_sg_init(&fh->vbi, &bttv_vbi_qops,
&btv->c.pci->dev, &btv->s_lock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB,
sizeof(struct bttv_buffer),

2
drivers/media/video/cx23885/cx23885-dvb.c
View file

@ -349,7 +349,7 @@ int cx23885_dvb_register(struct cx23885_tsport *port)
/* dvb stuff */
printk("%s: cx23885 based dvb card\n", dev->name);
videobuf_queue_pci_init(&port->dvb.dvbq, &dvb_qops, dev->pci, &port->slock,
videobuf_queue_sg_init(&port->dvb.dvbq, &dvb_qops, &dev->pci->dev, &port->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_TOP,
sizeof(struct cx23885_buffer), port);
err = dvb_register(port);

4
drivers/media/video/cx23885/cx23885-video.c
View file

@ -765,8 +765,8 @@ static int video_open(struct inode *inode, struct file *file)
fh->height = 240;
fh->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
videobuf_queue_pci_init(&fh->vidq, &cx23885_video_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->vidq, &cx23885_video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx23885_buffer),

8
drivers/media/video/cx88/cx88-alsa.c
View file

@ -283,7 +283,7 @@ static int dsp_buffer_free(snd_cx88_card_t *chip)
BUG_ON(!chip->dma_size);
dprintk(2,"Freeing buffer\n");
videobuf_pci_dma_unmap(chip->pci, chip->dma_risc);
videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc);
videobuf_dma_free(chip->dma_risc);
btcx_riscmem_free(chip->pci,&chip->buf->risc);
kfree(chip->buf);
@ -385,7 +385,7 @@ static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
BUG_ON(!chip->dma_size);
BUG_ON(chip->num_periods & (chip->num_periods-1));
buf = videobuf_pci_alloc(sizeof(*buf));
buf = videobuf_sg_alloc(sizeof(*buf));
if (NULL == buf)
return -ENOMEM;
@ -396,14 +396,14 @@ static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
buf->vb.height = chip->num_periods;
buf->vb.size = chip->dma_size;
dma=videobuf_to_dma(&buf->vb);
dma = videobuf_to_dma(&buf->vb);
videobuf_dma_init(dma);
ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
(PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
if (ret < 0)
goto error;
ret = videobuf_pci_dma_map(chip->pci,dma);
ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
if (ret < 0)
goto error;

4
drivers/media/video/cx88/cx88-blackbird.c
View file

@ -1087,8 +1087,8 @@ static int mpeg_open(struct inode *inode, struct file *file)
file->private_data = fh;
fh->dev = dev;
videobuf_queue_pci_init(&fh->mpegq, &blackbird_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->mpegq, &blackbird_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx88_buffer),

4
drivers/media/video/cx88/cx88-dvb.c
View file

@ -744,8 +744,8 @@ static int cx8802_dvb_probe(struct cx8802_driver *drv)
/* dvb stuff */
printk(KERN_INFO "%s/2: cx2388x based DVB/ATSC card\n", core->name);
videobuf_queue_pci_init(&dev->dvb.dvbq, &dvb_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&dev->dvb.dvbq, &dvb_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_TOP,
sizeof(struct cx88_buffer),

8
drivers/media/video/cx88/cx88-video.c
View file

@ -776,14 +776,14 @@ static int video_open(struct inode *inode, struct file *file)
fh->height = 240;
fh->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
videobuf_queue_pci_init(&fh->vidq, &cx8800_video_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->vidq, &cx8800_video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx88_buffer),
fh);
videobuf_queue_pci_init(&fh->vbiq, &cx8800_vbi_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->vbiq, &cx8800_vbi_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB,
sizeof(struct cx88_buffer),

10
drivers/media/video/saa7134/saa7134-alsa.c
View file

@ -503,7 +503,7 @@ 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_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
substream->runtime->dma_area = NULL;
}
@ -519,12 +519,12 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
return err;
}
if (0 != (err = videobuf_pci_dma_map(dev->pci, &dev->dmasound.dma))) {
if (0 != (err = videobuf_sg_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
dsp_buffer_free(dev);
return err;
}
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
videobuf_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
return err;
}
@ -533,7 +533,7 @@ 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_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
return err;
}
@ -569,7 +569,7 @@ 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_pci_dma_unmap(dev->pci, &dev->dmasound.dma);
videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
substream->runtime->dma_area = NULL;
}

4
drivers/media/video/saa7134/saa7134-dvb.c
View file

@ -899,8 +899,8 @@ static int dvb_init(struct saa7134_dev *dev)
dev->ts.nr_bufs = 32;
dev->ts.nr_packets = 32*4;
dev->dvb.name = dev->name;
videobuf_queue_pci_init(&dev->dvb.dvbq, &saa7134_ts_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&dev->dvb.dvbq, &saa7134_ts_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_ALTERNATE,
sizeof(struct saa7134_buf),

4
drivers/media/video/saa7134/saa7134-empress.c
View file

@ -427,8 +427,8 @@ static int empress_init(struct saa7134_dev *dev)
printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
dev->name,dev->empress_dev->minor & 0x1f);
videobuf_queue_pci_init(&dev->empress_tsq, &saa7134_ts_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_ALTERNATE,
sizeof(struct saa7134_buf),

8
drivers/media/video/saa7134/saa7134-video.c
View file

@ -1350,14 +1350,14 @@ static int video_open(struct inode *inode, struct file *file)
fh->height = 576;
v4l2_prio_open(&dev->prio,&fh->prio);
videobuf_queue_pci_init(&fh->cap, &video_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->cap, &video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct saa7134_buf),
fh);
videobuf_queue_pci_init(&fh->vbi, &saa7134_vbi_qops,
dev->pci, &dev->slock,
videobuf_queue_sg_init(&fh->vbi, &saa7134_vbi_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB,
sizeof(struct saa7134_buf),

2
drivers/media/video/soc_camera.c
View file

@ -210,7 +210,7 @@ static int soc_camera_open(struct inode *inode, struct file *file)
/* We must pass NULL as dev pointer, then all pci_* dma operations
* transform to normal dma_* ones. Do we need an irqlock? */
videobuf_queue_pci_init(&icf->vb_vidq, ici->vbq_ops, NULL, NULL,
videobuf_queue_sg_init(&icf->vb_vidq, ici->vbq_ops, NULL, NULL,
V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE,
ici->msize, icd);

117
drivers/media/video/videobuf-dma-sg.c
View file

@ -1,5 +1,5 @@
/*
* helper functions for PCI DMA video4linux capture buffers
* helper functions for SG DMA video4linux capture buffers
*
* The functions expect the hardware being able to scatter gatter
* (i.e. the buffers are not linear in physical memory, but fragmented
@ -24,7 +24,7 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#include <linux/scatterlist.h>
@ -42,7 +42,7 @@
static int debug;
module_param(debug, int, 0644);
MODULE_DESCRIPTION("helper module to manage video4linux pci dma sg buffers");
MODULE_DESCRIPTION("helper module to manage video4linux dma sg buffers");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
@ -119,10 +119,10 @@ videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset)
struct videobuf_dmabuf *videobuf_to_dma (struct videobuf_buffer *buf)
{
struct videbuf_pci_sg_memory *mem=buf->priv;
BUG_ON (!mem);
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 &mem->dma;
}
@ -141,9 +141,14 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
dma->direction = direction;
switch (dma->direction) {
case PCI_DMA_FROMDEVICE: rw = READ; break;
case PCI_DMA_TODEVICE: rw = WRITE; break;
default: BUG();
case DMA_FROM_DEVICE:
rw = READ;
break;
case DMA_TO_DEVICE:
rw = WRITE;
break;
default:
BUG();
}
first = (data & PAGE_MASK) >> PAGE_SHIFT;
@ -216,10 +221,8 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
return 0;
}
int videobuf_dma_map(struct videobuf_queue* q,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);
@ -245,7 +248,7 @@ int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
return -ENOMEM;
}
if (!dma->bus_addr) {
dma->sglen = pci_map_sg(dev,dma->sglist,
dma->sglen = dma_map_sg(q->dev, dma->sglist,
dma->nr_pages, dma->direction);
if (0 == dma->sglen) {
printk(KERN_WARNING
@ -259,14 +262,12 @@ int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
return 0;
}
int videobuf_dma_sync(struct videobuf_queue *q,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);
MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
BUG_ON(!dma->sglen);
pci_dma_sync_sg_for_cpu (dev,dma->sglist,dma->nr_pages,dma->direction);
dma_sync_sg_for_cpu(q->dev, dma->sglist, dma->nr_pages, dma->direction);
return 0;
}
@ -274,11 +275,11 @@ int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
{
void *dev=q->dev;
MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
if (!dma->sglen)
return 0;
pci_unmap_sg (dev,dma->sglist,dma->nr_pages,dma->direction);
dma_unmap_sg(q->dev, dma->sglist, dma->nr_pages, dma->direction);
kfree(dma->sglist);
dma->sglist = NULL;
@ -306,28 +307,28 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma)
if (dma->bus_addr) {
dma->bus_addr = 0;
}
dma->direction = PCI_DMA_NONE;
dma->direction = DMA_NONE;
return 0;
}
/* --------------------------------------------------------------------- */
int videobuf_pci_dma_map(struct pci_dev *pci,struct videobuf_dmabuf *dma)
int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
{
struct videobuf_queue q;
q.dev=pci;
q.dev = dev;
return (videobuf_dma_map(&q,dma));
return videobuf_dma_map(&q, dma);
}
int videobuf_pci_dma_unmap(struct pci_dev *pci,struct videobuf_dmabuf *dma)
int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
{
struct videobuf_queue q;
q.dev=pci;
q.dev = dev;
return (videobuf_dma_unmap(&q,dma));
return videobuf_dma_unmap(&q, dma);
}
/* --------------------------------------------------------------------- */
@ -347,7 +348,7 @@ videobuf_vm_close(struct vm_area_struct *vma)
{
struct videobuf_mapping *map = vma->vm_private_data;
struct videobuf_queue *q = map->q;
struct videbuf_pci_sg_memory *mem;
struct videobuf_dma_sg_memory *mem;
int i;
dprintk(2,"vm_close %p [count=%d,vma=%08lx-%08lx]\n",map,
@ -409,18 +410,18 @@ static struct vm_operations_struct videobuf_vm_ops =
};
/* ---------------------------------------------------------------------
* PCI handlers for the generic methods
* SG handlers for the generic methods
*/
/* Allocated area consists on 3 parts:
struct video_buffer
struct <driver>_buffer (cx88_buffer, saa7134_buf, ...)
struct videobuf_pci_sg_memory
struct videobuf_dma_sg_memory
*/
static void *__videobuf_alloc(size_t size)
{
struct videbuf_pci_sg_memory *mem;
struct videobuf_dma_sg_memory *mem;
struct videobuf_buffer *vb;
vb = kzalloc(size+sizeof(*mem),GFP_KERNEL);
@ -443,10 +444,10 @@ static int __videobuf_iolock (struct videobuf_queue* q,
{
int err,pages;
dma_addr_t bus;
struct videbuf_pci_sg_memory *mem=vb->priv;
struct videobuf_dma_sg_memory *mem = vb->priv;
BUG_ON(!mem);
MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
switch (vb->memory) {
case V4L2_MEMORY_MMAP:
@ -455,14 +456,14 @@ static int __videobuf_iolock (struct videobuf_queue* q,
/* no userspace addr -- kernel bounce buffer */
pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
err = videobuf_dma_init_kernel( &mem->dma,
PCI_DMA_FROMDEVICE,
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,
PCI_DMA_FROMDEVICE,
DMA_FROM_DEVICE,
vb->baddr,vb->bsize );
if (0 != err)
return err;
@ -473,7 +474,7 @@ static int __videobuf_iolock (struct videobuf_queue* q,
locking inversion, so don't take it here */
err = videobuf_dma_init_user_locked(&mem->dma,
PCI_DMA_FROMDEVICE,
DMA_FROM_DEVICE,
vb->baddr, vb->bsize);
if (0 != err)
return err;
@ -490,7 +491,7 @@ static int __videobuf_iolock (struct videobuf_queue* q,
*/
bus = (dma_addr_t)(unsigned long)fbuf->base + vb->boff;
pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
err = videobuf_dma_init_overlay(&mem->dma,PCI_DMA_FROMDEVICE,
err = videobuf_dma_init_overlay(&mem->dma, DMA_FROM_DEVICE,
bus, pages);
if (0 != err)
return err;
@ -498,7 +499,7 @@ static int __videobuf_iolock (struct videobuf_queue* q,
default:
BUG();
}
err = videobuf_dma_map(q,&mem->dma);
err = videobuf_dma_map(q, &mem->dma);
if (0 != err)
return err;
@ -508,8 +509,8 @@ static int __videobuf_iolock (struct videobuf_queue* q,
static int __videobuf_sync(struct videobuf_queue *q,
struct videobuf_buffer *buf)
{
struct videbuf_pci_sg_memory *mem=buf->priv;
BUG_ON (!mem);
struct videobuf_dma_sg_memory *mem = buf->priv;
BUG_ON(!mem);
MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
return videobuf_dma_sync(q,&mem->dma);
@ -532,7 +533,7 @@ static int __videobuf_mmap_free(struct videobuf_queue *q)
static int __videobuf_mmap_mapper(struct videobuf_queue *q,
struct vm_area_struct *vma)
{
struct videbuf_pci_sg_memory *mem;
struct videobuf_dma_sg_memory *mem;
struct videobuf_mapping *map;
unsigned int first,last,size,i;
int retval;
@ -552,7 +553,7 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
if (NULL == q->bufs[first])
continue;
mem=q->bufs[first]->priv;
BUG_ON (!mem);
BUG_ON(!mem);
MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
if (V4L2_MEMORY_MMAP != q->bufs[first]->memory)
@ -615,8 +616,8 @@ static int __videobuf_copy_to_user ( struct videobuf_queue *q,
char __user *data, size_t count,
int nonblocking )
{
struct videbuf_pci_sg_memory *mem=q->read_buf->priv;
BUG_ON (!mem);
struct videobuf_dma_sg_memory *mem = q->read_buf->priv;
BUG_ON(!mem);
MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
/* copy to userspace */
@ -634,8 +635,8 @@ static int __videobuf_copy_stream ( struct videobuf_queue *q,
int vbihack, int nonblocking )
{
unsigned int *fc;
struct videbuf_pci_sg_memory *mem=q->read_buf->priv;
BUG_ON (!mem);
struct videobuf_dma_sg_memory *mem = q->read_buf->priv;
BUG_ON(!mem);
MAGIC_CHECK(mem->magic,MAGIC_SG_MEM);
if (vbihack) {
@ -658,7 +659,7 @@ static int __videobuf_copy_stream ( struct videobuf_queue *q,
return count;
}
static struct videobuf_qtype_ops pci_ops = {
static struct videobuf_qtype_ops sg_ops = {
.magic = MAGIC_QTYPE_OPS,
.alloc = __videobuf_alloc,
@ -670,21 +671,21 @@ static struct videobuf_qtype_ops pci_ops = {
.copy_stream = __videobuf_copy_stream,
};
void *videobuf_pci_alloc (size_t size)
void *videobuf_sg_alloc(size_t size)
{
struct videobuf_queue q;
/* Required to make generic handler to call __videobuf_alloc */
q.int_ops=&pci_ops;
q.int_ops = &sg_ops;
q.msize=size;
q.msize = size;
return videobuf_alloc (&q);
return videobuf_alloc(&q);
}
void videobuf_queue_pci_init(struct videobuf_queue* q,
void videobuf_queue_sg_init(struct videobuf_queue* q,
struct videobuf_queue_ops *ops,
void *dev,
struct device *dev,
spinlock_t *irqlock,
enum v4l2_buf_type type,
enum v4l2_field field,
@ -692,7 +693,7 @@ void videobuf_queue_pci_init(struct videobuf_queue* q,
void *priv)
{
videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
priv, &pci_ops);
priv, &sg_ops);
}
/* --------------------------------------------------------------------- */
@ -709,11 +710,11 @@ 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_pci_alloc);
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_pci_init);
EXPORT_SYMBOL_GPL(videobuf_queue_sg_init);
/*
* Local variables:

2
drivers/media/video/videobuf-vmalloc.c
View file

@ -102,7 +102,7 @@ static struct vm_operations_struct videobuf_vm_ops =
/* Allocated area consists on 3 parts:
struct video_buffer
struct <driver>_buffer (cx88_buffer, saa7134_buf, ...)
struct videobuf_pci_sg_memory
struct videobuf_dma_sg_memory
*/
static void *__videobuf_alloc(size_t size)

14
include/media/videobuf-dma-sg.h
View file

@ -1,5 +1,5 @@
/*
* helper functions for PCI DMA video4linux capture buffers
* helper functions for SG DMA video4linux capture buffers
*
* The functions expect the hardware being able to scatter gatter
* (i.e. the buffers are not linear in physical memory, but fragmented
@ -81,7 +81,7 @@ struct videobuf_dmabuf {
int direction;
};
struct videbuf_pci_sg_memory
struct videobuf_dma_sg_memory
{
u32 magic;
@ -103,11 +103,11 @@ 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_pci_alloc (size_t size);
void *videobuf_sg_alloc(size_t size);
void videobuf_queue_pci_init(struct videobuf_queue* q,
void videobuf_queue_sg_init(struct videobuf_queue* q,
struct videobuf_queue_ops *ops,
void *dev,
struct device *dev,
spinlock_t *irqlock,
enum v4l2_buf_type type,
enum v4l2_field field,
@ -117,6 +117,6 @@ void videobuf_queue_pci_init(struct videobuf_queue* q,
/*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);
int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);