diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-04-09 08:07:20 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-18 00:40:15 -0300 |
commit | ed0236afa2382e1b75fec2a080a1e11ff1909de1 (patch) | |
tree | 5d0a1d1ebde1712d45d6a295292970c27d3da480 /drivers/staging/tm6000/tm6000-video.c | |
parent | c144c037153765f572ab4ffea277467370dd97dd (diff) | |
download | op-kernel-dev-ed0236afa2382e1b75fec2a080a1e11ff1909de1.zip op-kernel-dev-ed0236afa2382e1b75fec2a080a1e11ff1909de1.tar.gz |
V4L/DVB (12836): tm6000: revert to an old way to copy video
The new way is causing machine hangups. This one works.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/tm6000/tm6000-video.c')
-rw-r--r-- | drivers/staging/tm6000/tm6000-video.c | 387 |
1 files changed, 191 insertions, 196 deletions
diff --git a/drivers/staging/tm6000/tm6000-video.c b/drivers/staging/tm6000/tm6000-video.c index 5f2865e..98f68fe 100644 --- a/drivers/staging/tm6000/tm6000-video.c +++ b/drivers/staging/tm6000/tm6000-video.c @@ -192,117 +192,126 @@ static int copy_packet(struct urb *urb, u32 header, u8 **ptr, u8 *endp, */ unsigned int linewidth = (*buf)->vb.width << 1; - c = (header >> 24) & 0xff; - - /* split the header fields */ - size = (((header & 0x7e) << 1) - 1) * 4; - block = (header >> 7) & 0xf; - field = (header >> 11) & 0x1; - line = (header >> 12) & 0x1ff; - cmd = (header >> 21) & 0x7; - - /* Validates header fields */ - if (size > TM6000_URB_MSG_LEN) - size = TM6000_URB_MSG_LEN; - - if (cmd == TM6000_URB_MSG_VIDEO) { - if ((block + 1) * TM6000_URB_MSG_LEN > linewidth) - cmd = TM6000_URB_MSG_ERR; - - /* FIXME: Mounts the image as field0+field1 - * It should, instead, check if the user selected - * entrelaced or non-entrelaced mode - */ - pos = ((line << 1) + field) * linewidth + - block * TM6000_URB_MSG_LEN; - - /* Don't allow to write out of the buffer */ - if (pos + TM6000_URB_MSG_LEN > (*buf)->vb.size) { - dprintk(dev, V4L2_DEBUG_ISOC, - "ERR: size=%d, num=%d, line=%d, " - "field=%d\n", - size, block, line, field); - - cmd = TM6000_URB_MSG_ERR; - } - } else { - pos = 0; - } - - /* Prints debug info */ - dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, " - " line=%d, field=%d\n", - size, block, line, field); - - /* Checks if a complete set of frame0 + frame 1 were received */ - if (dev->isoc_ctl.last_line > line) { - if (dev->isoc_ctl.fields == 3) { - /* Announces that a new buffer were filled */ - buffer_filled(dev, dma_q, *buf); - dprintk(dev, V4L2_DEBUG_ISOC, - "new buffer filled\n"); - rc = get_next_buf(dma_q, buf); + if (!dev->isoc_ctl.cmd) { + c = (header >> 24) & 0xff; + + /* split the header fields */ + size = (((header & 0x7e) << 1) -1) *4; + block = (header >> 7) & 0xf; + field = (header >> 11) & 0x1; + line = (header >> 12) & 0x1ff; + cmd = (header >> 21) & 0x7; + + /* Validates header fields */ + if(size > TM6000_URB_MSG_LEN) + size = TM6000_URB_MSG_LEN; - dev->isoc_ctl.fields = 0; + if (cmd == TM6000_URB_MSG_VIDEO) { + if ((block+1)*TM6000_URB_MSG_LEN>linewidth) + cmd = TM6000_URB_MSG_ERR; + + /* FIXME: Mounts the image as field0+field1 + * It should, instead, check if the user selected + * entrelaced or non-entrelaced mode + */ + pos= ((line<<1)+field)*linewidth + + block*TM6000_URB_MSG_LEN; + + /* Don't allow to write out of the buffer */ + if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) { + dprintk(dev, V4L2_DEBUG_ISOC, + "ERR: size=%d, num=%d, line=%d, " + "field=%d\n", + size, block, line, field); + + cmd = TM6000_URB_MSG_ERR; + } } else { - dev->isoc_ctl.fields |= 1 << field; - } - } - dev->isoc_ctl.last_line = line; - - if ((last_line != line) && (last_line + 1 != line) && - (cmd != TM6000_URB_MSG_ERR)) { - if (cmd != TM6000_URB_MSG_VIDEO) { - dprintk(dev, V4L2_DEBUG_ISOC, "cmd=%d, " - "size=%d, num=%d, line=%d, field=%d\n", - cmd, size, block, line, field); + pos=0; } - if (start_line < 0) - start_line = last_line; + /* Prints debug info */ - dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, " - "field=%d\n", - start_line, last_line, field); + dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, " + " line=%d, field=%d\n", + size, block, line, field); - if ((start_line < 6 && last_line > 200) && - (last_field != field)) { + if ((last_line!=line)&&(last_line+1!=line) && + (cmd != TM6000_URB_MSG_ERR) ) { + if (cmd != TM6000_URB_MSG_VIDEO) { + dprintk(dev, V4L2_DEBUG_ISOC, "cmd=%d, " + "size=%d, num=%d, line=%d, field=%d\n", + cmd, size, block, line, field); + } + if (start_line<0) + start_line=last_line; + /* Prints debug info */ + dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, " + "field=%d\n", + start_line, last_line, field); + + if ((start_line<6 && last_line>200) && + (last_field != field) ) { + + dev->isoc_ctl.nfields++; + if (dev->isoc_ctl.nfields>=2) { + dev->isoc_ctl.nfields=0; + + /* Announces that a new buffer were filled */ + buffer_filled (dev, dma_q, *buf); + dprintk(dev, V4L2_DEBUG_ISOC, + "new buffer filled\n"); + rc=get_next_buf (dma_q, buf); + } + } - dev->isoc_ctl.nfields++; - if (dev->isoc_ctl.nfields >= 2) - dev->isoc_ctl.nfields = 0; + start_line=line; + last_field=field; } + last_line=line; - start_line = line; - last_field = field; + pktsize = TM6000_URB_MSG_LEN; + } else { + /* Continue the last copy */ + cmd = dev->isoc_ctl.cmd; + size= dev->isoc_ctl.size; + pos = dev->isoc_ctl.pos; + pktsize = dev->isoc_ctl.pktsize; } - last_line = line; - - pktsize = TM6000_URB_MSG_LEN; cpysize = (endp-(*ptr) > size) ? size : endp - *ptr; if (cpysize) { /* handles each different URB message */ - switch (cmd) { + switch(cmd) { case TM6000_URB_MSG_VIDEO: /* Fills video buffer */ - if (__copy_to_user(&out_p[pos], *ptr, cpysize) != 0) - tm6000_err("copy_to_user failed.\n"); - + memcpy(&out_p[pos], *ptr, cpysize); break; case TM6000_URB_MSG_PTS: break; case TM6000_URB_MSG_AUDIO: - /* Need some code to process audio */ - printk(KERN_INFO "%ld: cmd=%s, size=%d\n", jiffies, - tm6000_msg_type[cmd], size); +/* Need some code to process audio */ +printk ("%ld: cmd=%s, size=%d\n", jiffies, + tm6000_msg_type[cmd],size); break; default: - dprintk(dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n", - tm6000_msg_type[cmd], size); + dprintk (dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n", + tm6000_msg_type[cmd],size); } } - (*ptr) += cpysize; + if (cpysize<size) { + /* End of URB packet, but cmd processing is not + * complete. Preserve the state for a next packet + */ + dev->isoc_ctl.pos = pos+cpysize; + dev->isoc_ctl.size= size-cpysize; + dev->isoc_ctl.cmd = cmd; + dev->isoc_ctl.pktsize = pktsize-cpysize; + (*ptr)+=cpysize; + } else { + dev->isoc_ctl.cmd = 0; + (*ptr)+=pktsize; + } return rc; } @@ -311,76 +320,60 @@ static int copy_streams(u8 *data, u8 *out_p, unsigned long len, struct urb *urb, struct tm6000_buffer **buf) { struct tm6000_dmaqueue *dma_q = urb->context; - struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); - u8 *ptr, *endp; - unsigned long header = 0; - int rc = 0, size; - - /* Process pending data */ - if (dev->isoc_ctl.pending) { - memcpy(dev->isoc_ctl.tbuf + dev->isoc_ctl.len, ptr, - sizeof(dev->isoc_ctl.tbuf) - dev->isoc_ctl.len); - - /* Seek for sync */ - endp = dev->isoc_ctl.tbuf + sizeof(dev->isoc_ctl.tbuf); - for (ptr = dev->isoc_ctl.tbuf; ptr < endp - 3; ptr++) { - if (*(ptr + 3) == 0x47) - break; - } - header = *(unsigned long *)ptr; - size = (((header & 0x7e) << 1) - 1) * 4; - if (size > TM6000_URB_MSG_LEN) - size = TM6000_URB_MSG_LEN; - - if (ptr + 3 + size >= endp) { - printk(KERN_ERR "tm6000: broken data\n"); - ptr = data; - goto process_new_uri; - } - ptr += 4; + struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq); + u8 *ptr=data, *endp=data+len; + unsigned long header=0; + int rc=0; - /* Copy or continue last copy */ - rc = copy_packet(urb, header, &ptr, endp, out_p, buf); - if (rc < 0) { - buf = NULL; - printk(KERN_ERR "tm6000: buffer underrun at %ld\n", - jiffies); - return rc; - } - dev->isoc_ctl.pending = 0; - ptr = data + (ptr - dev->isoc_ctl.tbuf); - } else - ptr = data; - -process_new_uri: - endp = data + len; - while (ptr < endp) { - if (!dev->isoc_ctl.pending) { + for (ptr=data; ptr<endp;) { + if (!dev->isoc_ctl.cmd) { + u8 *p=(u8 *)&dev->isoc_ctl.tmp_buf; + /* FIXME: This seems very complex + * It just recovers up to 3 bytes of the header that + * might be at the previous packet + */ + if (dev->isoc_ctl.tmp_buf_len) { + while (dev->isoc_ctl.tmp_buf_len) { + if ( *(ptr+3-dev->isoc_ctl.tmp_buf_len) == 0x47) { + break; + } + p++; + dev->isoc_ctl.tmp_buf_len--; + } + if (dev->isoc_ctl.tmp_buf_len) { + memcpy (&header,p, + dev->isoc_ctl.tmp_buf_len); + memcpy (((u8 *)header)+ + dev->isoc_ctl.tmp_buf, + ptr, + 4-dev->isoc_ctl.tmp_buf_len); + ptr+=4-dev->isoc_ctl.tmp_buf_len; + goto HEADER; + } + } /* Seek for sync */ - for (; ptr < endp - 3; ptr++) { - if (*(ptr + 3) == 0x47) + for (;ptr<endp-3;ptr++) { + if (*(ptr+3)==0x47) break; } - header = *(unsigned long *)ptr; - size = (((header & 0x7e) << 1) - 1) * 4; - if (size > TM6000_URB_MSG_LEN) - size = TM6000_URB_MSG_LEN; - - if (ptr + 3 + size >= endp) { - int len = endp - ptr; - memcpy(dev->isoc_ctl.tbuf, ptr, len); - dev->isoc_ctl.len = len; - dev->isoc_ctl.pending = 1; + if (ptr+3>=endp) { + dev->isoc_ctl.tmp_buf_len=endp-ptr; + memcpy (&dev->isoc_ctl.tmp_buf,ptr, + dev->isoc_ctl.tmp_buf_len); + dev->isoc_ctl.cmd=0; return rc; } - ptr += 4; - } + /* Get message header */ + header=*(unsigned long *)ptr; + ptr+=4; + } +HEADER: /* Copy or continue last copy */ - rc = copy_packet(urb, header, &ptr, endp, out_p, buf); - if (rc < 0) { - buf = NULL; + rc=copy_packet(urb,header,&ptr,endp,out_p,buf); + if (rc<0) { + buf=NULL; printk(KERN_ERR "tm6000: buffer underrun at %ld\n", jiffies); return rc; @@ -396,42 +389,40 @@ static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len, struct urb *urb, struct tm6000_buffer **buf) { struct tm6000_dmaqueue *dma_q = urb->context; - struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); - unsigned int pos = dev->isoc_ctl.pos, cpysize; - int rc = 1; - - while (len > 0) { - cpysize = min(len, (*buf)->vb.size-pos); - - if (__copy_to_user(&out_p[pos], ptr, cpysize) != 0) - tm6000_err("copy_to_user failed.\n"); - - pos += cpysize; - ptr += cpysize; - len -= cpysize; + struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq); + unsigned int pos=dev->isoc_ctl.pos,cpysize; + int rc=1; + + while (len>0) { + cpysize=min(len,(*buf)->vb.size-pos); +//printk("Copying %d bytes (max=%lu) from %p to %p[%u]\n",cpysize,(*buf)->vb.size,ptr,out_p,pos); + memcpy(&out_p[pos], ptr, cpysize); + pos+=cpysize; + ptr+=cpysize; + len-=cpysize; if (pos >= (*buf)->vb.size) { - pos = 0; + pos=0; /* Announces that a new buffer were filled */ - buffer_filled(dev, dma_q, *buf); + buffer_filled (dev, dma_q, *buf); dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n"); - rc = get_next_buf(dma_q, buf); - if (rc <= 0) { - *buf = NULL; + rc=get_next_buf (dma_q, buf); + if (rc<=0) { + *buf=NULL; break; } } } - dev->isoc_ctl.pos = pos; + dev->isoc_ctl.pos=pos; return rc; } -static inline void print_err_status(struct tm6000_core *dev, - int packet, int status) +static void inline print_err_status (struct tm6000_core *dev, + int packet, int status) { char *errmsg = "Unknown"; - switch (status) { + switch(status) { case -ENOENT: errmsg = "unlinked synchronuously"; break; @@ -457,12 +448,11 @@ static inline void print_err_status(struct tm6000_core *dev, errmsg = "Device does not respond"; break; } - if (packet < 0) { + if (packet<0) { dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n", status, errmsg); } else { - dprintk(dev, V4L2_DEBUG_QUEUE, - "URB packet %d, status %d [%s].\n", + dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n", packet, status, errmsg); } } @@ -474,40 +464,45 @@ static inline void print_err_status(struct tm6000_core *dev, static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf) { struct tm6000_dmaqueue *dma_q = urb->context; - struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq); - void *outp = videobuf_to_vmalloc(&((*buf)->vb)); - int i, len = 0, rc = 1; - int size = (*buf)->vb.size; + struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq); + void *outp=videobuf_to_vmalloc (&((*buf)->vb)); + int i, len=0, rc=1; + int size=(*buf)->vb.size; char *p; - unsigned long copied = 0; + unsigned long copied; - if (urb->status < 0) { - print_err_status(dev, -1, urb->status); + copied=0; + + if (urb->status<0) { + print_err_status (dev,-1,urb->status); return 0; } for (i = 0; i < urb->number_of_packets; i++) { int status = urb->iso_frame_desc[i].status; - if (status < 0) { - print_err_status(dev, i, status); + if (status<0) { + print_err_status (dev,i,status); continue; } - len = urb->iso_frame_desc[i].actual_length; - - p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - if (!urb->iso_frame_desc[i].status) { - if (((*buf)->fmt->fourcc) == V4L2_PIX_FMT_TM6000) { - rc = copy_multiplexed(p, outp, len, urb, buf); - if (rc <= 0) - return rc; - } else - copy_streams(p, outp, len, urb, buf); - } - copied += len; - if (copied >= size) - break; + len=urb->iso_frame_desc[i].actual_length; + +// if (len>=TM6000_URB_MSG_LEN) { + p=urb->transfer_buffer + urb->iso_frame_desc[i].offset; + if (!urb->iso_frame_desc[i].status) { + if (((*buf)->fmt->fourcc)==V4L2_PIX_FMT_TM6000) { + rc=copy_multiplexed(p,outp,len,urb,buf); + if (rc<=0) + return rc; + } else { + copy_streams(p,outp,len,urb,buf); + } + } + copied += len; + if (copied>=size) + break; +// } } return rc; } |