WebSVN - shark - Blame - Rev 1618 - /shark/branches/xen/drivers/bttv/bttv-risc.c

Rev	Author	Line No.	Line
428	giacomo	1	/*
		2	bttv-risc.c -- interfaces to other kernel modules
		3
		4	bttv risc code handling
		5	- memory management
		6	- generation
		7
		8	(c) 2000 Gerd Knorr <kraxel@bytesex.org>
		9
		10	This program is free software; you can redistribute it and/or modify
		11	it under the terms of the GNU General Public License as published by
		12	the Free Software Foundation; either version 2 of the License, or
		13	(at your option) any later version.
		14
		15	This program is distributed in the hope that it will be useful,
		16	but WITHOUT ANY WARRANTY; without even the implied warranty of
		17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		18	GNU General Public License for more details.
		19
		20	You should have received a copy of the GNU General Public License
		21	along with this program; if not, write to the Free Software
		22	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
		23
		24	*/
		25
		26	#include <linuxcomp.h>
		27
		28	#include <linux/module.h>
		29	#include <linux/init.h>
		30	#include <linux/pci.h>
		31	#include <linux/vmalloc.h>
		32	#include <linux/interrupt.h>
		33	#include <asm/page.h>
		34	#include <asm/pgtable.h>
		35
		36	#include "drivers/bttvp.h"
		37
		38	#define VCR_HACK_LINES 4
		39
		40	/* ---------------------------------------------------------- */
		41	/* risc code generators */
		42
		43	int
		44	bttv_risc_packed(struct bttv btv, struct btcx_riscmem risc,
		45	struct scatterlist *sglist,
		46	unsigned int offset, unsigned int bpl,
		47	unsigned int padding, unsigned int lines)
		48	{
		49	u32 instructions,line,todo;
		50	struct scatterlist *sg;
		51	u32 *rp;
		52	int rc;
		53
		54	/* estimate risc mem: worst case is one write per page border +
		55	one write per scan line + sync + jump (all 2 dwords) */
		56	instructions = (bpl * lines) / PAGE_SIZE + lines;
		57	instructions += 2;
		58	if ((rc = btcx_riscmem_alloc(btv->dev,risc,instructions*8)) < 0)
		59	return rc;
		60
		61	/* sync instruction */
		62	rp = risc->cpu;
		63	*(rp++) = cpu_to_le32(BT848_RISC_SYNC\|BT848_FIFO_STATUS_FM1);
		64	*(rp++) = cpu_to_le32(0);
		65
		66	/* scan lines */
		67	sg = sglist;
		68	for (line = 0; line < lines; line++) {
		69	if ((btv->opt_vcr_hack) &&
		70	(line >= (lines - VCR_HACK_LINES)))
		71	continue;
		72	while (offset >= sg_dma_len(sg)) {
		73	offset -= sg_dma_len(sg);
		74	sg++;
		75	}
		76	if (bpl <= sg_dma_len(sg)-offset) {
		77	/* fits into current chunk */
		78	*(rp++)=cpu_to_le32(BT848_RISC_WRITE\|BT848_RISC_SOL\|
		79	BT848_RISC_EOL\|bpl);
		80	*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
		81	offset+=bpl;
		82	} else {
		83	/* scanline needs to be splitted */
		84	todo = bpl;
		85	*(rp++)=cpu_to_le32(BT848_RISC_WRITE\|BT848_RISC_SOL\|
		86	(sg_dma_len(sg)-offset));
		87	*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
		88	todo -= (sg_dma_len(sg)-offset);
		89	offset = 0;
		90	sg++;
		91	while (todo > sg_dma_len(sg)) {
		92	*(rp++)=cpu_to_le32(BT848_RISC_WRITE\|
		93	sg_dma_len(sg));
		94	*(rp++)=cpu_to_le32(sg_dma_address(sg));
		95	todo -= sg_dma_len(sg);
		96	sg++;
		97	}
		98	*(rp++)=cpu_to_le32(BT848_RISC_WRITE\|BT848_RISC_EOL\|
		99	todo);
		100	*(rp++)=cpu_to_le32(sg_dma_address(sg));
		101	offset += todo;
		102	}
		103	offset += padding;
		104	}
		105	dprintk("bttv%d: risc planar: %d sglist elems\n", btv->nr, (int)(sg-sglist));
		106
		107	/* save pointer to jmp instruction address */
		108	risc->jmp = rp;
		109	return 0;
		110	}
		111
		112	int
		113	bttv_risc_planar(struct bttv btv, struct btcx_riscmem risc,
		114	struct scatterlist *sglist,
		115	unsigned int yoffset, unsigned int ybpl,
		116	unsigned int ypadding, unsigned int ylines,
		117	unsigned int uoffset, unsigned int voffset,
		118	unsigned int hshift, unsigned int vshift,
		119	unsigned int cpadding)
		120	{
		121	unsigned int instructions,line,todo,ylen,chroma;
		122	u32 *rp,ri;
		123	struct scatterlist *ysg;
		124	struct scatterlist *usg;
		125	struct scatterlist *vsg;
		126	int rc;
		127
		128	/* estimate risc mem: worst case is one write per page border +
		129	one write per scan line (5 dwords)
		130	plus sync + jump (2 dwords) */
		131	instructions = (ybpl * ylines * 2) / PAGE_SIZE + ylines;
		132	instructions += 2;
		133	if ((rc = btcx_riscmem_alloc(btv->dev,risc,instructions45)) < 0)
		134	return rc;
		135
		136	/* sync instruction */
		137	rp = risc->cpu;
		138	*(rp++) = cpu_to_le32(BT848_RISC_SYNC\|BT848_FIFO_STATUS_FM3);
		139	*(rp++) = cpu_to_le32(0);
		140
		141	/* scan lines */
		142	ysg = sglist;
		143	usg = sglist;
		144	vsg = sglist;
		145	for (line = 0; line < ylines; line++) {
		146	if ((btv->opt_vcr_hack) &&
		147	(line >= (ylines - VCR_HACK_LINES)))
		148	continue;
		149	switch (vshift) {
		150	case 0: chroma = 1; break;
		151	case 1: chroma = !(line & 1); break;
		152	case 2: chroma = !(line & 3); break;
		153	default: chroma = 0;
		154	}
		155	for (todo = ybpl; todo > 0; todo -= ylen) {
		156	/* go to next sg entry if needed */
		157	while (yoffset >= sg_dma_len(ysg)) {
		158	yoffset -= sg_dma_len(ysg);
		159	ysg++;
		160	}
		161	while (uoffset >= sg_dma_len(usg)) {
		162	uoffset -= sg_dma_len(usg);
		163	usg++;
		164	}
		165	while (voffset >= sg_dma_len(vsg)) {
		166	voffset -= sg_dma_len(vsg);
		167	vsg++;
		168	}
		169
		170	/* calculate max number of bytes we can write */
		171	ylen = todo;
		172	if (yoffset + ylen > sg_dma_len(ysg))
		173	ylen = sg_dma_len(ysg) - yoffset;
		174	if (chroma) {
		175	if (uoffset + (ylen>>hshift) > sg_dma_len(usg))
		176	ylen = (sg_dma_len(usg) - uoffset) << hshift;
		177	if (voffset + (ylen>>hshift) > sg_dma_len(vsg))
		178	ylen = (sg_dma_len(vsg) - voffset) << hshift;
		179	ri = BT848_RISC_WRITE123;
		180	} else {
		181	ri = BT848_RISC_WRITE1S23;
		182	}
		183	if (ybpl == todo)
		184	ri \|= BT848_RISC_SOL;
		185	if (ylen == todo)
		186	ri \|= BT848_RISC_EOL;
		187
		188	/* write risc instruction */
		189	*(rp++)=cpu_to_le32(ri \| ylen);
		190	*(rp++)=cpu_to_le32(((ylen >> hshift) << 16) \|
		191	(ylen >> hshift));
		192	*(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset);
		193	yoffset += ylen;
		194	if (chroma) {
		195	*(rp++)=cpu_to_le32(sg_dma_address(usg)+uoffset);
		196	uoffset += ylen >> hshift;
		197	*(rp++)=cpu_to_le32(sg_dma_address(vsg)+voffset);
		198	voffset += ylen >> hshift;
		199	}
		200	}
		201	yoffset += ypadding;
		202	if (chroma) {
		203	uoffset += cpadding;
		204	voffset += cpadding;
		205	}
		206	}
		207
		208	/* save pointer to jmp instruction address */
		209	risc->jmp = rp;
		210	return 0;
		211	}
		212
		213	int
		214	bttv_risc_overlay(struct bttv btv, struct btcx_riscmem risc,
		215	const struct bttv_format fmt, struct bttv_overlay ov,
		216	int skip_even, int skip_odd)
		217	{
		218	int instructions,rc,line,maxy,start,end,skip,nskips;
		219	struct btcx_skiplist *skips;
		220	u32 *rp,ri,ra;
		221	u32 addr;
		222
		223	/* skip list for window clipping */
		224	if (NULL == (skips = kmalloc(sizeof(skips) ov->nclips,GFP_KERNEL)))
		225	return -ENOMEM;
		226
		227	/* estimate risc mem: worst case is (clip+1) * lines instructions
		228	+ sync + jump (all 2 dwords) */
		229	instructions = (ov->nclips + 1) *
		230	((skip_even \|\| skip_odd) ? ov->w.height>>1 : ov->w.height);
		231	instructions += 2;
		232	if ((rc = btcx_riscmem_alloc(btv->dev,risc,instructions*8)) < 0) {
		233	kfree(skips);
		234	return rc;
		235	}
		236
		237	/* sync instruction */
		238	rp = risc->cpu;
		239	*(rp++) = cpu_to_le32(BT848_RISC_SYNC\|BT848_FIFO_STATUS_FM1);
		240	*(rp++) = cpu_to_le32(0);
		241
		242	addr = (unsigned long)btv->fbuf.base;
		243	addr += btv->fbuf.fmt.bytesperline * ov->w.top;
		244	addr += (fmt->depth >> 3) * ov->w.left;
		245
		246	/* scan lines */
		247	for (maxy = -1, line = 0; line < ov->w.height;
		248	line++, addr += btv->fbuf.fmt.bytesperline) {
		249	if ((btv->opt_vcr_hack) &&
		250	(line >= (ov->w.height - VCR_HACK_LINES)))
		251	continue;
		252	if ((line%2) == 0 && skip_even)
		253	continue;
		254	if ((line%2) == 1 && skip_odd)
		255	if ((line%2) == 0 && skip_even)
		256	continue;
		257	if ((line%2) == 1 && skip_odd)
		258	continue;
		259
		260	/* calculate clipping */
		261	if (line > maxy)
		262	btcx_calc_skips(line, ov->w.width, &maxy,
		263	skips, &nskips, ov->clips, ov->nclips);
		264
		265	/* write out risc code */
		266	for (start = 0, skip = 0; start < ov->w.width; start = end) {
		267	if (skip >= nskips) {
		268	ri = BT848_RISC_WRITE;
		269	end = ov->w.width;
		270	} else if (start < skips[skip].start) {
		271	ri = BT848_RISC_WRITE;
		272	end = skips[skip].start;
		273	} else {
		274	ri = BT848_RISC_SKIP;
		275	end = skips[skip].end;
		276	skip++;
		277	}
		278	if (BT848_RISC_WRITE == ri)
		279	ra = addr + (fmt->depth>>3)*start;
		280	else
		281	ra = 0;
		282
		283	if (0 == start)
		284	ri \|= BT848_RISC_SOL;
		285	if (ov->w.width == end)
		286	ri \|= BT848_RISC_EOL;
		287	ri \|= (fmt->depth>>3) * (end-start);
		288
		289	*(rp++)=cpu_to_le32(ri);
		290	if (0 != ra)
		291	*(rp++)=cpu_to_le32(ra);
		292	}
		293	}
		294
		295	/* save pointer to jmp instruction address */
		296	risc->jmp = rp;
		297	kfree(skips);
		298	return 0;
		299	}
		300
		301	/* ---------------------------------------------------------- */
		302
		303	void
		304	bttv_calc_geo(struct bttv btv, struct bttv_geometry geo,
		305	int width, int height, int interleaved, int norm)
		306	{
		307	const struct bttv_tvnorm *tvnorm = &bttv_tvnorms[norm];
		308	u32 xsf, sr;
		309	int vdelay;
		310
		311	int swidth = tvnorm->swidth;
		312	int totalwidth = tvnorm->totalwidth;
		313	int scaledtwidth = tvnorm->scaledtwidth;
		314
		315	if (bttv_tvcards[btv->type].muxsel[btv->input] < 0) {
		316	swidth = 720;
		317	totalwidth = 858;
		318	scaledtwidth = 858;
		319	}
		320
		321	vdelay = tvnorm->vdelay;
		322	#if 0 /* FIXME */
		323	if (vdelay < btv->vbi.lines*2)
		324	vdelay = btv->vbi.lines*2;
		325	#endif
		326
		327	xsf = (width*scaledtwidth)/swidth;
		328	geo->hscale = ((totalwidth*4096UL)/xsf-4096);
		329	geo->hdelay = tvnorm->hdelayx1;
		330	geo->hdelay = (geo->hdelay*width)/swidth;
		331	geo->hdelay &= 0x3fe;
		332	sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512;
		333	geo->vscale = (0x10000UL-sr) & 0x1fff;
		334	geo->crop = ((width>>8)&0x03) \| ((geo->hdelay>>6)&0x0c) \|
		335	((tvnorm->sheight>>4)&0x30) \| ((vdelay>>2)&0xc0);
		336	geo->vscale \|= interleaved ? (BT848_VSCALE_INT<<8) : 0;
		337	geo->vdelay = vdelay;
		338	geo->width = width;
		339	geo->sheight = tvnorm->sheight;
		340	geo->vtotal = tvnorm->vtotal;
		341
		342	if (btv->opt_combfilter) {
		343	geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0);
		344	geo->comb = (width < 769) ? 1 : 0;
		345	} else {
		346	geo->vtc = 0;
		347	geo->comb = 0;
		348	}
		349	}
		350
		351	void
		352	bttv_apply_geo(struct bttv btv, struct bttv_geometry geo, int odd)
		353	{
		354	int off = odd ? 0x80 : 0x00;
		355
		356	if (geo->comb)
		357	btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
		358	else
		359	btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
		360
		361	btwrite(geo->vtc, BT848_E_VTC+off);
		362	btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off);
		363	btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off);
		364	btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off);
		365	btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off);
		366	btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off);
		367	btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off);
		368	btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off);
		369	btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off);
		370	btwrite(geo->crop, BT848_E_CROP+off);
		371	btwrite(geo->vtotal>>8, BT848_VTOTAL_HI);
		372	btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO);
		373	}
		374
		375	/* ---------------------------------------------------------- */
		376	/* risc group / risc main loop / dma management */
		377
		378	void
		379	bttv_set_dma(struct bttv *btv, int override, int irqflags)
		380	{
		381	unsigned long cmd;
		382	int capctl;
		383
		384	btv->cap_ctl = 0;
		385	if (NULL != btv->curr.top) btv->cap_ctl \|= 0x02;
		386	if (NULL != btv->curr.bottom) btv->cap_ctl \|= 0x01;
		387	if (NULL != btv->curr.vbi) btv->cap_ctl \|= 0x0c;
		388
		389	capctl = 0;
		390	capctl \|= (btv->cap_ctl & 0x03) ? 0x03 : 0x00; /* capture */
		391	capctl \|= (btv->cap_ctl & 0x0c) ? 0x0c : 0x00; /* vbi data */
		392	capctl \|= override;
		393
		394	d2printk(KERN_DEBUG
		395	"bttv%d: capctl=%x irq=%d top=%08Lx/%08Lx even=%08Lx/%08Lx\n",
		396	btv->nr,capctl,irqflags,
		397	btv->curr.vbi ? (unsigned long long)btv->curr.vbi->top.dma : 0,
		398	btv->curr.top ? (unsigned long long)btv->curr.top->top.dma : 0,
		399	btv->curr.vbi ? (unsigned long long)btv->curr.vbi->bottom.dma : 0,
		400	btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
		401
		402	cmd = BT848_RISC_JUMP;
		403	if (irqflags) {
		404	cmd \|= BT848_RISC_IRQ;
		405	cmd \|= (irqflags & 0x0f) << 16;
		406	cmd \|= (~irqflags & 0x0f) << 20;
758	giacomo	407	mod_timer(&btv->timeout, jiffies26+BTTV_TIMEOUT);
428	giacomo	408	} else {
758	giacomo	409	del_timer(&btv->timeout);
428	giacomo	410	}
		411	btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd);
		412
		413	btaor(capctl, ~0x0f, BT848_CAP_CTL);
		414	if (capctl) {
		415	if (btv->dma_on)
		416	return;
		417	btwrite(btv->main.dma, BT848_RISC_STRT_ADD);
		418	btor(3, BT848_GPIO_DMA_CTL);
		419	btv->dma_on = 1;
		420	} else {
		421	if (!btv->dma_on)
		422	return;
		423	btand(~3, BT848_GPIO_DMA_CTL);
		424	btv->dma_on = 0;
		425	}
		426	return;
		427	}
		428
		429	int
		430	bttv_risc_init_main(struct bttv *btv)
		431	{
		432	int rc;
		433
		434	if ((rc = btcx_riscmem_alloc(btv->dev,&btv->main,PAGE_SIZE)) < 0)
		435	return rc;
		436	dprintk(KERN_DEBUG "bttv%d: risc main @ %08Lx\n",
		437	btv->nr,(unsigned long long)btv->main.dma);
		438
		439	btv->main.cpu[0] = cpu_to_le32(BT848_RISC_SYNC \| BT848_RISC_RESYNC \|
		440	BT848_FIFO_STATUS_VRE);
		441	btv->main.cpu[1] = cpu_to_le32(0);
		442	btv->main.cpu[2] = cpu_to_le32(BT848_RISC_JUMP);
		443	btv->main.cpu[3] = cpu_to_le32(btv->main.dma + (4<<2));
		444
		445	/* top field */
		446	btv->main.cpu[4] = cpu_to_le32(BT848_RISC_JUMP);
		447	btv->main.cpu[5] = cpu_to_le32(btv->main.dma + (6<<2));
		448	btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP);
		449	btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2));
		450
		451	btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC \| BT848_RISC_RESYNC \|
		452	BT848_FIFO_STATUS_VRO);
		453	btv->main.cpu[9] = cpu_to_le32(0);
		454
		455	/* bottom field */
		456	btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP);
		457	btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2));
		458	btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP);
		459	btv->main.cpu[13] = cpu_to_le32(btv->main.dma + (14<<2));
		460
		461	/* jump back to top field */
		462	btv->main.cpu[14] = cpu_to_le32(BT848_RISC_JUMP);
		463	btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2));
		464
		465	return 0;
		466	}
		467
		468	int
		469	bttv_risc_hook(struct bttv btv, int slot, struct btcx_riscmem risc,
		470	int irqflags)
		471	{
		472	unsigned long cmd;
		473	unsigned long next = btv->main.dma + ((slot+2) << 2);
		474
		475	if (NULL == risc) {
		476	d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=NULL\n",
		477	btv->nr,risc,slot);
		478	btv->main.cpu[slot+1] = cpu_to_le32(next);
		479	} else {
		480	d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=%08Lx irq=%d\n",
		481	btv->nr,risc,slot,(unsigned long long)risc->dma,irqflags);
		482	cmd = BT848_RISC_JUMP;
		483	if (irqflags) {
		484	cmd \|= BT848_RISC_IRQ;
		485	cmd \|= (irqflags & 0x0f) << 16;
		486	cmd \|= (~irqflags & 0x0f) << 20;
		487	}
		488	risc->jmp[0] = cpu_to_le32(cmd);
		489	risc->jmp[1] = cpu_to_le32(next);
		490	btv->main.cpu[slot+1] = cpu_to_le32(risc->dma);
		491	}
		492	return 0;
		493	}
		494
		495	void
		496	bttv_dma_free(struct bttv btv, struct bttv_buffer buf)
		497	{
614	giacomo	498	//if (in_interrupt())
		499	// BUG();
621	giacomo	500	//videobuf_waiton(&buf->vb,0,0);
516	giacomo	501	//videobuf_dma_pci_unmap(btv->dev, &buf->vb.dma);
		502	//videobuf_dma_free(&buf->vb.dma);
428	giacomo	503	btcx_riscmem_free(btv->dev,&buf->bottom);
		504	btcx_riscmem_free(btv->dev,&buf->top);
		505	buf->vb.state = STATE_NEEDS_INIT;
		506	}
		507
		508	int
		509	bttv_buffer_set_activate(struct bttv *btv,
		510	struct bttv_buffer_set *set)
		511	{
		512	/* vbi capture */
		513	if (set->vbi) {
		514	set->vbi->vb.state = STATE_ACTIVE;
		515	list_del(&set->vbi->vb.queue);
		516	bttv_risc_hook(btv, RISC_SLOT_O_VBI, &set->vbi->top, 0);
		517	bttv_risc_hook(btv, RISC_SLOT_E_VBI, &set->vbi->bottom, 0);
		518	} else {
		519	bttv_risc_hook(btv, RISC_SLOT_O_VBI, NULL, 0);
		520	bttv_risc_hook(btv, RISC_SLOT_E_VBI, NULL, 0);
		521	}
		522
		523	/* video capture */
		524	if (NULL != set->top && NULL != set->bottom) {
		525	if (set->top == set->bottom) {
		526	set->top->vb.state = STATE_ACTIVE;
		527	if (set->top->vb.queue.next)
		528	list_del(&set->top->vb.queue);
		529	} else {
		530	set->top->vb.state = STATE_ACTIVE;
		531	set->bottom->vb.state = STATE_ACTIVE;
		532	if (set->top->vb.queue.next)
		533	list_del(&set->top->vb.queue);
		534	if (set->bottom->vb.queue.next)
		535	list_del(&set->bottom->vb.queue);
		536	}
		537	bttv_apply_geo(btv, &set->top->geo, 1);
		538	bttv_apply_geo(btv, &set->bottom->geo,0);
		539	bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, set->topirq);
		540	bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, 0);
		541	btaor((set->top->btformat & 0xf0) \| (set->bottom->btformat & 0x0f),
		542	~0xff, BT848_COLOR_FMT);
		543	btaor((set->top->btswap & 0x0a) \| (set->bottom->btswap & 0x05),
		544	~0x0f, BT848_COLOR_CTL);
		545	} else if (NULL != set->top) {
		546	set->top->vb.state = STATE_ACTIVE;
		547	if (set->top->vb.queue.next)
		548	list_del(&set->top->vb.queue);
		549	bttv_apply_geo(btv, &set->top->geo,1);
		550	bttv_apply_geo(btv, &set->top->geo,0);
		551	bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, 0);
		552	bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0);
		553	btaor(set->top->btformat & 0xff, ~0xff, BT848_COLOR_FMT);
		554	btaor(set->top->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL);
		555	} else if (NULL != set->bottom) {
		556	set->bottom->vb.state = STATE_ACTIVE;
		557	if (set->bottom->vb.queue.next)
		558	list_del(&set->bottom->vb.queue);
		559	bttv_apply_geo(btv, &set->bottom->geo,1);
		560	bttv_apply_geo(btv, &set->bottom->geo,0);
		561	bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
		562	bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, 0);
		563	btaor(set->bottom->btformat & 0xff, ~0xff, BT848_COLOR_FMT);
		564	btaor(set->bottom->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL);
		565	} else {
		566	bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
		567	bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0);
		568	}
		569	return 0;
		570	}
		571
		572	/* ---------------------------------------------------------- */
		573
		574	/* calculate geometry, build risc code */
		575	int
		576	bttv_buffer_risc(struct bttv btv, struct bttv_buffer buf)
		577	{
		578	const struct bttv_tvnorm *tvnorm = bttv_tvnorms + buf->tvnorm;
		579
516	giacomo	580	//dprintk(KERN_DEBUG
		581	// "bttv%d: buffer field: %s format: %s size: %dx%d\n",
		582	// btv->nr, v4l2_field_names[buf->vb.field],
		583	// buf->fmt->name, buf->vb.width, buf->vb.height);
428	giacomo	584
		585	/* packed pixel modes */
		586	if (buf->fmt->flags & FORMAT_FLAGS_PACKED) {
		587	int bpl = (buf->fmt->depth >> 3) * buf->vb.width;
		588	int bpf = bpl * (buf->vb.height >> 1);
		589
		590	bttv_calc_geo(btv,&buf->geo,buf->vb.width,buf->vb.height,
		591	V4L2_FIELD_HAS_BOTH(buf->vb.field),buf->tvnorm);
		592
		593	switch (buf->vb.field) {
		594	case V4L2_FIELD_TOP:
		595	bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,
		596	0,bpl,0,buf->vb.height);
		597	break;
		598	case V4L2_FIELD_BOTTOM:
		599	bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist,
		600	0,bpl,0,buf->vb.height);
		601	break;
		602	case V4L2_FIELD_INTERLACED:
		603	bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,
		604	0,bpl,bpl,buf->vb.height >> 1);
		605	bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist,
		606	bpl,bpl,bpl,buf->vb.height >> 1);
		607	break;
		608	case V4L2_FIELD_SEQ_TB:
		609	bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,
		610	0,bpl,0,buf->vb.height >> 1);
		611	bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist,
		612	bpf,bpl,0,buf->vb.height >> 1);
		613	break;
		614	default:
		615	BUG();
		616	}
		617	}
		618
		619	/* planar modes */
		620	if (buf->fmt->flags & FORMAT_FLAGS_PLANAR) {
		621	int uoffset, voffset;
		622	int ypadding, cpadding, lines;
		623
		624	/* calculate chroma offsets */
		625	uoffset = buf->vb.width * buf->vb.height;
		626	voffset = buf->vb.width * buf->vb.height;
		627	if (buf->fmt->flags & FORMAT_FLAGS_CrCb) {
		628	/* Y-Cr-Cb plane order */
		629	uoffset >>= buf->fmt->hshift;
		630	uoffset >>= buf->fmt->vshift;
		631	uoffset += voffset;
		632	} else {
		633	/* Y-Cb-Cr plane order */
		634	voffset >>= buf->fmt->hshift;
		635	voffset >>= buf->fmt->vshift;
		636	voffset += uoffset;
		637	}
		638
		639	switch (buf->vb.field) {
		640	case V4L2_FIELD_TOP:
		641	bttv_calc_geo(btv,&buf->geo,buf->vb.width,
		642	buf->vb.height,0,buf->tvnorm);
		643	bttv_risc_planar(btv, &buf->top, buf->vb.dma.sglist,
		644	0,buf->vb.width,0,buf->vb.height,
		645	uoffset,voffset,buf->fmt->hshift,
		646	buf->fmt->vshift,0);
		647	break;
		648	case V4L2_FIELD_BOTTOM:
		649	bttv_calc_geo(btv,&buf->geo,buf->vb.width,
		650	buf->vb.height,0,buf->tvnorm);
		651	bttv_risc_planar(btv, &buf->bottom, buf->vb.dma.sglist,
		652	0,buf->vb.width,0,buf->vb.height,
		653	uoffset,voffset,buf->fmt->hshift,
		654	buf->fmt->vshift,0);
		655	break;
		656	case V4L2_FIELD_INTERLACED:
		657	bttv_calc_geo(btv,&buf->geo,buf->vb.width,
		658	buf->vb.height,1,buf->tvnorm);
		659	lines = buf->vb.height >> 1;
		660	ypadding = buf->vb.width;
		661	cpadding = buf->vb.width >> buf->fmt->hshift;
		662	bttv_risc_planar(btv,&buf->top,
		663	buf->vb.dma.sglist,
		664	0,buf->vb.width,ypadding,lines,
		665	uoffset,voffset,
		666	buf->fmt->hshift,
		667	buf->fmt->vshift,
		668	cpadding);
		669	bttv_risc_planar(btv,&buf->bottom,
		670	buf->vb.dma.sglist,
		671	ypadding,buf->vb.width,ypadding,lines,
		672	uoffset+cpadding,
		673	voffset+cpadding,
		674	buf->fmt->hshift,
		675	buf->fmt->vshift,
		676	cpadding);
		677	break;
		678	case V4L2_FIELD_SEQ_TB:
		679	bttv_calc_geo(btv,&buf->geo,buf->vb.width,
		680	buf->vb.height,1,buf->tvnorm);
		681	lines = buf->vb.height >> 1;
		682	ypadding = buf->vb.width;
		683	cpadding = buf->vb.width >> buf->fmt->hshift;
		684	bttv_risc_planar(btv,&buf->top,
		685	buf->vb.dma.sglist,
		686	0,buf->vb.width,0,lines,
		687	uoffset >> 1,
		688	voffset >> 1,
		689	buf->fmt->hshift,
		690	buf->fmt->vshift,
		691	0);
		692	bttv_risc_planar(btv,&buf->bottom,
		693	buf->vb.dma.sglist,
		694	lines * ypadding,buf->vb.width,0,lines,
		695	lines * ypadding + (uoffset >> 1),
		696	lines * ypadding + (voffset >> 1),
		697	buf->fmt->hshift,
		698	buf->fmt->vshift,
		699	0);
		700	break;
		701	default:
		702	BUG();
		703	}
		704	}
		705
		706	/* raw data */
		707	if (buf->fmt->flags & FORMAT_FLAGS_RAW) {
		708	/* build risc code */
		709	buf->vb.field = V4L2_FIELD_SEQ_TB;
		710	bttv_calc_geo(btv,&buf->geo,tvnorm->swidth,tvnorm->sheight,
		711	1,buf->tvnorm);
		712	bttv_risc_packed(btv, &buf->top, buf->vb.dma.sglist,
		713	0, RAW_BPL, 0, RAW_LINES);
		714	bttv_risc_packed(btv, &buf->bottom, buf->vb.dma.sglist,
		715	buf->vb.size/2 , RAW_BPL, 0, RAW_LINES);
		716	}
		717
		718	/* copy format info */
		719	buf->btformat = buf->fmt->btformat;
		720	buf->btswap = buf->fmt->btswap;
		721	return 0;
		722	}
		723
		724	/* ---------------------------------------------------------- */
		725
		726	/* calculate geometry, build risc code */
		727	int
		728	bttv_overlay_risc(struct bttv *btv,
		729	struct bttv_overlay *ov,
		730	const struct bttv_format *fmt,
		731	struct bttv_buffer *buf)
		732	{
		733	/* check interleave, bottom+top fields */
516	giacomo	734	//dprintk(KERN_DEBUG
		735	// "bttv%d: overlay fields: %s format: %s size: %dx%d\n",
		736	// btv->nr, v4l2_field_names[buf->vb.field],
		737	// fmt->name,ov->w.width,ov->w.height);
428	giacomo	738
		739	/* calculate geometry */
		740	bttv_calc_geo(btv,&buf->geo,ov->w.width,ov->w.height,
		741	V4L2_FIELD_HAS_BOTH(ov->field), ov->tvnorm);
		742
		743	/* build risc code */
		744	switch (ov->field) {
		745	case V4L2_FIELD_TOP:
		746	bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 0);
		747	break;
		748	case V4L2_FIELD_BOTTOM:
		749	bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 0);
		750	break;
		751	case V4L2_FIELD_INTERLACED:
		752	#if 0
		753	bttv_risc_overlay(btv, &buf->top, fmt, ov, 1, 0);
		754	bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 1);
		755	#else
		756	bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 1);
		757	bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 1, 0);
		758	#endif
		759	break;
		760	default:
		761	BUG();
		762	}
		763
		764	/* copy format info */
		765	buf->btformat = fmt->btformat;
		766	buf->btswap = fmt->btswap;
		767	buf->vb.field = ov->field;
		768	return 0;
		769	}
		770
		771	/*
		772	* Local variables:
		773	* c-basic-offset: 8
		774	* End:
		775	*/

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(root)/shark/branches/xen/drivers/bttv/bttv-risc.c - Rev 1618