/*
+
bttv-risc.c -- interfaces to other kernel modules
bttv risc code handling
}
if (bpl <= sg_dma_len(sg)-offset) {
/* fits into current chunk */
- *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
+ *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
BT848_RISC_EOL|bpl);
- *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
- offset+=bpl;
+ *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
+ offset+=bpl;
} else {
/* scanline needs to be splitted */
- todo = bpl;
- *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
+ todo = bpl;
+ *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
(sg_dma_len(sg)-offset));
- *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
- todo -= (sg_dma_len(sg)-offset);
- offset = 0;
- sg++;
- while (todo > sg_dma_len(sg)) {
- *(rp++)=cpu_to_le32(BT848_RISC_WRITE|
+ *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
+ todo -= (sg_dma_len(sg)-offset);
+ offset = 0;
+ sg++;
+ while (todo > sg_dma_len(sg)) {
+ *(rp++)=cpu_to_le32(BT848_RISC_WRITE|
sg_dma_len(sg));
- *(rp++)=cpu_to_le32(sg_dma_address(sg));
+ *(rp++)=cpu_to_le32(sg_dma_address(sg));
todo -= sg_dma_len(sg);
sg++;
}
- *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL|
+ *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL|
todo);
*(rp++)=cpu_to_le32(sg_dma_address(sg));
offset += todo;
}
offset += padding;
}
- dprintk("bttv%d: risc planar: %d sglist elems\n", btv->c.nr, (int)(sg-sglist));
/* save pointer to jmp instruction address */
risc->jmp = rp;
+ BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
return 0;
}
-int
+static int
bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc,
struct scatterlist *sglist,
unsigned int yoffset, unsigned int ybpl,
struct scatterlist *ysg;
struct scatterlist *usg;
struct scatterlist *vsg;
+ int topfield = (0 == yoffset);
int rc;
/* estimate risc mem: worst case is one write per page border +
(line >= (ylines - VCR_HACK_LINES)))
continue;
switch (vshift) {
- case 0: chroma = 1; break;
- case 1: chroma = !(line & 1); break;
- case 2: chroma = !(line & 3); break;
- default: chroma = 0;
+ case 0:
+ chroma = 1;
+ break;
+ case 1:
+ if (topfield)
+ chroma = ((line & 1) == 0);
+ else
+ chroma = ((line & 1) == 1);
+ break;
+ case 2:
+ if (topfield)
+ chroma = ((line & 3) == 0);
+ else
+ chroma = ((line & 3) == 2);
+ break;
+ default:
+ chroma = 0;
+ break;
}
+
for (todo = ybpl; todo > 0; todo -= ylen) {
/* go to next sg entry if needed */
while (yoffset && yoffset >= sg_dma_len(ysg)) {
ri |= BT848_RISC_EOL;
/* write risc instruction */
- *(rp++)=cpu_to_le32(ri | ylen);
- *(rp++)=cpu_to_le32(((ylen >> hshift) << 16) |
+ *(rp++)=cpu_to_le32(ri | ylen);
+ *(rp++)=cpu_to_le32(((ylen >> hshift) << 16) |
(ylen >> hshift));
*(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset);
yoffset += ylen;
/* save pointer to jmp instruction address */
risc->jmp = rp;
+ BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
return 0;
}
-int
+static int
bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc,
const struct bttv_format *fmt, struct bttv_overlay *ov,
int skip_even, int skip_odd)
/* skip list for window clipping */
if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL)))
return -ENOMEM;
-
+
/* estimate risc mem: worst case is (clip+1) * lines instructions
+ sync + jump (all 2 dwords) */
instructions = (ov->nclips + 1) *
ra = addr + (fmt->depth>>3)*start;
else
ra = 0;
-
+
if (0 == start)
ri |= BT848_RISC_SOL;
if (ov->w.width == end)
/* save pointer to jmp instruction address */
risc->jmp = rp;
+ BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
kfree(skips);
return 0;
}
/* ---------------------------------------------------------- */
-void
+static void
bttv_calc_geo(struct bttv *btv, struct bttv_geometry *geo,
int width, int height, int interleaved, int norm)
{
const struct bttv_tvnorm *tvnorm = &bttv_tvnorms[norm];
- u32 xsf, sr;
+ u32 xsf, sr;
int vdelay;
int swidth = tvnorm->swidth;
}
vdelay = tvnorm->vdelay;
-#if 0 /* FIXME */
- if (vdelay < btv->vbi.lines*2)
- vdelay = btv->vbi.lines*2;
-#endif
-
- xsf = (width*scaledtwidth)/swidth;
- geo->hscale = ((totalwidth*4096UL)/xsf-4096);
- geo->hdelay = tvnorm->hdelayx1;
- geo->hdelay = (geo->hdelay*width)/swidth;
- geo->hdelay &= 0x3fe;
- sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512;
- geo->vscale = (0x10000UL-sr) & 0x1fff;
- geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) |
- ((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0);
- geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0;
- geo->vdelay = vdelay;
- geo->width = width;
- geo->sheight = tvnorm->sheight;
+
+ xsf = (width*scaledtwidth)/swidth;
+ geo->hscale = ((totalwidth*4096UL)/xsf-4096);
+ geo->hdelay = tvnorm->hdelayx1;
+ geo->hdelay = (geo->hdelay*width)/swidth;
+ geo->hdelay &= 0x3fe;
+ sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512;
+ geo->vscale = (0x10000UL-sr) & 0x1fff;
+ geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) |
+ ((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0);
+ geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0;
+ geo->vdelay = vdelay;
+ geo->width = width;
+ geo->sheight = tvnorm->sheight;
geo->vtotal = tvnorm->vtotal;
- if (btv->opt_combfilter) {
- geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0);
- geo->comb = (width < 769) ? 1 : 0;
- } else {
- geo->vtc = 0;
- geo->comb = 0;
- }
+ if (btv->opt_combfilter) {
+ geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0);
+ geo->comb = (width < 769) ? 1 : 0;
+ } else {
+ geo->vtc = 0;
+ geo->comb = 0;
+ }
}
-void
+static void
bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd)
{
- int off = odd ? 0x80 : 0x00;
+ int off = odd ? 0x80 : 0x00;
if (geo->comb)
btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
else
btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
- btwrite(geo->vtc, BT848_E_VTC+off);
- btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off);
- btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off);
- btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off);
- btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off);
- btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off);
- btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off);
- btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off);
- btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off);
- btwrite(geo->crop, BT848_E_CROP+off);
+ btwrite(geo->vtc, BT848_E_VTC+off);
+ btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off);
+ btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off);
+ btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off);
+ btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off);
+ btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off);
+ btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off);
+ btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off);
+ btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off);
+ btwrite(geo->crop, BT848_E_CROP+off);
btwrite(geo->vtotal>>8, BT848_VTOTAL_HI);
- btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO);
+ btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO);
}
/* ---------------------------------------------------------- */
/* risc group / risc main loop / dma management */
void
-bttv_set_dma(struct bttv *btv, int override, int irqflags)
+bttv_set_dma(struct bttv *btv, int override)
{
unsigned long cmd;
int capctl;
capctl |= override;
d2printk(KERN_DEBUG
- "bttv%d: capctl=%x irq=%d top=%08Lx/%08Lx even=%08Lx/%08Lx\n",
- btv->c.nr,capctl,irqflags,
+ "bttv%d: capctl=%x lirq=%d top=%08Lx/%08Lx even=%08Lx/%08Lx\n",
+ btv->c.nr,capctl,btv->loop_irq,
btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
btv->curr.top ? (unsigned long long)btv->curr.top->top.dma : 0,
btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0,
btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
-
+
cmd = BT848_RISC_JUMP;
- if (irqflags) {
+ if (btv->loop_irq) {
cmd |= BT848_RISC_IRQ;
- cmd |= (irqflags & 0x0f) << 16;
- cmd |= (~irqflags & 0x0f) << 20;
+ cmd |= (btv->loop_irq & 0x0f) << 16;
+ cmd |= (~btv->loop_irq & 0x0f) << 20;
}
- if (irqflags || btv->cvbi) {
+ if (btv->curr.frame_irq || btv->loop_irq || btv->cvbi) {
mod_timer(&btv->timeout, jiffies+BTTV_TIMEOUT);
} else {
del_timer(&btv->timeout);
}
- btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd);
-
+ btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd);
+
btaor(capctl, ~0x0f, BT848_CAP_CTL);
if (capctl) {
if (btv->dma_on)
} else {
if (!btv->dma_on)
return;
- btand(~3, BT848_GPIO_DMA_CTL);
+ btand(~3, BT848_GPIO_DMA_CTL);
btv->dma_on = 0;
}
return;
bttv_risc_init_main(struct bttv *btv)
{
int rc;
-
+
if ((rc = btcx_riscmem_alloc(btv->c.pci,&btv->main,PAGE_SIZE)) < 0)
return rc;
dprintk(KERN_DEBUG "bttv%d: risc main @ %08Lx\n",
btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP);
btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2));
- btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |
+ btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |
BT848_FIFO_STATUS_VRO);
- btv->main.cpu[9] = cpu_to_le32(0);
+ btv->main.cpu[9] = cpu_to_le32(0);
/* bottom field */
- btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP);
+ btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP);
btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2));
- btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP);
+ btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP);
btv->main.cpu[13] = cpu_to_le32(btv->main.dma + (14<<2));
/* jump back to top field */
btv->main.cpu[14] = cpu_to_le32(BT848_RISC_JUMP);
- btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2));
+ btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2));
return 0;
}
}
bttv_apply_geo(btv, &set->top->geo, 1);
bttv_apply_geo(btv, &set->bottom->geo,0);
- bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, set->topirq);
- bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, 0);
+ bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top,
+ set->top_irq);
+ bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom,
+ set->frame_irq);
btaor((set->top->btformat & 0xf0) | (set->bottom->btformat & 0x0f),
~0xff, BT848_COLOR_FMT);
btaor((set->top->btswap & 0x0a) | (set->bottom->btswap & 0x05),
list_del(&set->top->vb.queue);
bttv_apply_geo(btv, &set->top->geo,1);
bttv_apply_geo(btv, &set->top->geo,0);
- bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, 0);
+ bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top,
+ set->frame_irq);
bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0);
btaor(set->top->btformat & 0xff, ~0xff, BT848_COLOR_FMT);
btaor(set->top->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL);
list_del(&set->bottom->vb.queue);
bttv_apply_geo(btv, &set->bottom->geo,1);
bttv_apply_geo(btv, &set->bottom->geo,0);
- bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
- bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, 0);
+ bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
+ bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom,
+ set->frame_irq);
btaor(set->bottom->btformat & 0xff, ~0xff, BT848_COLOR_FMT);
btaor(set->bottom->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL);
} else {
bttv_calc_geo(btv,&buf->geo,buf->vb.width,buf->vb.height,
V4L2_FIELD_HAS_BOTH(buf->vb.field),buf->tvnorm);
-
+
switch (buf->vb.field) {
case V4L2_FIELD_TOP:
bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,
bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 0);
break;
case V4L2_FIELD_INTERLACED:
-#if 0
- bttv_risc_overlay(btv, &buf->top, fmt, ov, 1, 0);
- bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 1);
-#else
bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 1);
bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 1, 0);
-#endif
break;
default:
BUG();
git://git.onelab.eu / linux-2.6.git / blobdiff