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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | |
3 | bttv-risc.c -- interfaces to other kernel modules | |
4 | ||
5 | bttv risc code handling | |
6 | - memory management | |
7 | - generation | |
8 | ||
9 | (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/init.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
1da177e4 LT |
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> | |
35ea11ff | 35 | #include <media/v4l2-ioctl.h> |
1da177e4 LT |
36 | |
37 | #include "bttvp.h" | |
38 | ||
39 | #define VCR_HACK_LINES 4 | |
40 | ||
41 | /* ---------------------------------------------------------- */ | |
42 | /* risc code generators */ | |
43 | ||
44 | int | |
45 | bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc, | |
46 | struct scatterlist *sglist, | |
47 | unsigned int offset, unsigned int bpl, | |
e5bd0260 MS |
48 | unsigned int padding, unsigned int skip_lines, |
49 | unsigned int store_lines) | |
1da177e4 LT |
50 | { |
51 | u32 instructions,line,todo; | |
52 | struct scatterlist *sg; | |
d8eaa58b | 53 | __le32 *rp; |
1da177e4 LT |
54 | int rc; |
55 | ||
56 | /* estimate risc mem: worst case is one write per page border + | |
4a287cfe DS |
57 | one write per scan line + sync + jump (all 2 dwords). padding |
58 | can cause next bpl to start close to a page border. First DMA | |
59 | region may be smaller than PAGE_SIZE */ | |
e5bd0260 MS |
60 | instructions = skip_lines * 4; |
61 | instructions += (1 + ((bpl + padding) * store_lines) | |
62 | / PAGE_SIZE + store_lines) * 8; | |
63 | instructions += 2 * 8; | |
64 | if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions)) < 0) | |
1da177e4 LT |
65 | return rc; |
66 | ||
67 | /* sync instruction */ | |
68 | rp = risc->cpu; | |
69 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); | |
70 | *(rp++) = cpu_to_le32(0); | |
71 | ||
e5bd0260 MS |
72 | while (skip_lines-- > 0) { |
73 | *(rp++) = cpu_to_le32(BT848_RISC_SKIP | BT848_RISC_SOL | | |
74 | BT848_RISC_EOL | bpl); | |
75 | } | |
76 | ||
1da177e4 LT |
77 | /* scan lines */ |
78 | sg = sglist; | |
e5bd0260 | 79 | for (line = 0; line < store_lines; line++) { |
1da177e4 | 80 | if ((btv->opt_vcr_hack) && |
e5bd0260 | 81 | (line >= (store_lines - VCR_HACK_LINES))) |
1da177e4 LT |
82 | continue; |
83 | while (offset && offset >= sg_dma_len(sg)) { | |
84 | offset -= sg_dma_len(sg); | |
85 | sg++; | |
86 | } | |
87 | if (bpl <= sg_dma_len(sg)-offset) { | |
88 | /* fits into current chunk */ | |
4ac97914 | 89 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| |
1da177e4 | 90 | BT848_RISC_EOL|bpl); |
4ac97914 MCC |
91 | *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); |
92 | offset+=bpl; | |
1da177e4 LT |
93 | } else { |
94 | /* scanline needs to be splitted */ | |
4ac97914 MCC |
95 | todo = bpl; |
96 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| | |
1da177e4 | 97 | (sg_dma_len(sg)-offset)); |
4ac97914 MCC |
98 | *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); |
99 | todo -= (sg_dma_len(sg)-offset); | |
100 | offset = 0; | |
101 | sg++; | |
102 | while (todo > sg_dma_len(sg)) { | |
f2421ca3 | 103 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE| |
1da177e4 | 104 | sg_dma_len(sg)); |
f2421ca3 | 105 | *(rp++)=cpu_to_le32(sg_dma_address(sg)); |
1da177e4 LT |
106 | todo -= sg_dma_len(sg); |
107 | sg++; | |
108 | } | |
4ac97914 | 109 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL| |
1da177e4 LT |
110 | todo); |
111 | *(rp++)=cpu_to_le32(sg_dma_address(sg)); | |
112 | offset += todo; | |
113 | } | |
114 | offset += padding; | |
115 | } | |
116 | ||
117 | /* save pointer to jmp instruction address */ | |
118 | risc->jmp = rp; | |
4a287cfe | 119 | BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size); |
1da177e4 LT |
120 | return 0; |
121 | } | |
122 | ||
123 | static int | |
124 | bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc, | |
125 | struct scatterlist *sglist, | |
126 | unsigned int yoffset, unsigned int ybpl, | |
127 | unsigned int ypadding, unsigned int ylines, | |
128 | unsigned int uoffset, unsigned int voffset, | |
129 | unsigned int hshift, unsigned int vshift, | |
130 | unsigned int cpadding) | |
131 | { | |
132 | unsigned int instructions,line,todo,ylen,chroma; | |
d8eaa58b AV |
133 | __le32 *rp; |
134 | u32 ri; | |
1da177e4 LT |
135 | struct scatterlist *ysg; |
136 | struct scatterlist *usg; | |
137 | struct scatterlist *vsg; | |
138 | int topfield = (0 == yoffset); | |
139 | int rc; | |
140 | ||
141 | /* estimate risc mem: worst case is one write per page border + | |
142 | one write per scan line (5 dwords) | |
143 | plus sync + jump (2 dwords) */ | |
e5bd0260 MS |
144 | instructions = ((3 + (ybpl + ypadding) * ylines * 2) |
145 | / PAGE_SIZE) + ylines; | |
1da177e4 LT |
146 | instructions += 2; |
147 | if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*4*5)) < 0) | |
148 | return rc; | |
149 | ||
150 | /* sync instruction */ | |
151 | rp = risc->cpu; | |
152 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3); | |
153 | *(rp++) = cpu_to_le32(0); | |
154 | ||
155 | /* scan lines */ | |
156 | ysg = sglist; | |
157 | usg = sglist; | |
158 | vsg = sglist; | |
159 | for (line = 0; line < ylines; line++) { | |
160 | if ((btv->opt_vcr_hack) && | |
161 | (line >= (ylines - VCR_HACK_LINES))) | |
162 | continue; | |
163 | switch (vshift) { | |
164 | case 0: | |
165 | chroma = 1; | |
166 | break; | |
167 | case 1: | |
168 | if (topfield) | |
169 | chroma = ((line & 1) == 0); | |
170 | else | |
171 | chroma = ((line & 1) == 1); | |
172 | break; | |
173 | case 2: | |
174 | if (topfield) | |
175 | chroma = ((line & 3) == 0); | |
176 | else | |
177 | chroma = ((line & 3) == 2); | |
178 | break; | |
179 | default: | |
180 | chroma = 0; | |
181 | break; | |
182 | } | |
183 | ||
184 | for (todo = ybpl; todo > 0; todo -= ylen) { | |
185 | /* go to next sg entry if needed */ | |
186 | while (yoffset && yoffset >= sg_dma_len(ysg)) { | |
187 | yoffset -= sg_dma_len(ysg); | |
188 | ysg++; | |
189 | } | |
190 | while (uoffset && uoffset >= sg_dma_len(usg)) { | |
191 | uoffset -= sg_dma_len(usg); | |
192 | usg++; | |
193 | } | |
194 | while (voffset && voffset >= sg_dma_len(vsg)) { | |
195 | voffset -= sg_dma_len(vsg); | |
196 | vsg++; | |
197 | } | |
198 | ||
199 | /* calculate max number of bytes we can write */ | |
200 | ylen = todo; | |
201 | if (yoffset + ylen > sg_dma_len(ysg)) | |
202 | ylen = sg_dma_len(ysg) - yoffset; | |
203 | if (chroma) { | |
204 | if (uoffset + (ylen>>hshift) > sg_dma_len(usg)) | |
205 | ylen = (sg_dma_len(usg) - uoffset) << hshift; | |
206 | if (voffset + (ylen>>hshift) > sg_dma_len(vsg)) | |
207 | ylen = (sg_dma_len(vsg) - voffset) << hshift; | |
208 | ri = BT848_RISC_WRITE123; | |
209 | } else { | |
210 | ri = BT848_RISC_WRITE1S23; | |
211 | } | |
212 | if (ybpl == todo) | |
213 | ri |= BT848_RISC_SOL; | |
214 | if (ylen == todo) | |
215 | ri |= BT848_RISC_EOL; | |
216 | ||
217 | /* write risc instruction */ | |
4ac97914 MCC |
218 | *(rp++)=cpu_to_le32(ri | ylen); |
219 | *(rp++)=cpu_to_le32(((ylen >> hshift) << 16) | | |
1da177e4 LT |
220 | (ylen >> hshift)); |
221 | *(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset); | |
222 | yoffset += ylen; | |
223 | if (chroma) { | |
224 | *(rp++)=cpu_to_le32(sg_dma_address(usg)+uoffset); | |
225 | uoffset += ylen >> hshift; | |
226 | *(rp++)=cpu_to_le32(sg_dma_address(vsg)+voffset); | |
227 | voffset += ylen >> hshift; | |
228 | } | |
229 | } | |
230 | yoffset += ypadding; | |
231 | if (chroma) { | |
232 | uoffset += cpadding; | |
233 | voffset += cpadding; | |
234 | } | |
235 | } | |
236 | ||
237 | /* save pointer to jmp instruction address */ | |
238 | risc->jmp = rp; | |
4a287cfe | 239 | BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size); |
1da177e4 LT |
240 | return 0; |
241 | } | |
242 | ||
243 | static int | |
244 | bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc, | |
245 | const struct bttv_format *fmt, struct bttv_overlay *ov, | |
246 | int skip_even, int skip_odd) | |
247 | { | |
c6eb8eaf HV |
248 | int dwords, rc, line, maxy, start, end; |
249 | unsigned skip, nskips; | |
1da177e4 | 250 | struct btcx_skiplist *skips; |
d8eaa58b AV |
251 | __le32 *rp; |
252 | u32 ri,ra; | |
1da177e4 LT |
253 | u32 addr; |
254 | ||
255 | /* skip list for window clipping */ | |
256 | if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL))) | |
257 | return -ENOMEM; | |
258 | ||
3203f94a | 259 | /* estimate risc mem: worst case is (1.5*clip+1) * lines instructions |
1da177e4 | 260 | + sync + jump (all 2 dwords) */ |
3203f94a DS |
261 | dwords = (3 * ov->nclips + 2) * |
262 | ((skip_even || skip_odd) ? (ov->w.height+1)>>1 : ov->w.height); | |
263 | dwords += 4; | |
264 | if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,dwords*4)) < 0) { | |
1da177e4 LT |
265 | kfree(skips); |
266 | return rc; | |
267 | } | |
268 | ||
269 | /* sync instruction */ | |
270 | rp = risc->cpu; | |
271 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); | |
272 | *(rp++) = cpu_to_le32(0); | |
273 | ||
274 | addr = (unsigned long)btv->fbuf.base; | |
275 | addr += btv->fbuf.fmt.bytesperline * ov->w.top; | |
276 | addr += (fmt->depth >> 3) * ov->w.left; | |
277 | ||
278 | /* scan lines */ | |
279 | for (maxy = -1, line = 0; line < ov->w.height; | |
280 | line++, addr += btv->fbuf.fmt.bytesperline) { | |
281 | if ((btv->opt_vcr_hack) && | |
282 | (line >= (ov->w.height - VCR_HACK_LINES))) | |
283 | continue; | |
284 | if ((line%2) == 0 && skip_even) | |
285 | continue; | |
286 | if ((line%2) == 1 && skip_odd) | |
287 | continue; | |
288 | ||
289 | /* calculate clipping */ | |
290 | if (line > maxy) | |
291 | btcx_calc_skips(line, ov->w.width, &maxy, | |
292 | skips, &nskips, ov->clips, ov->nclips); | |
293 | ||
294 | /* write out risc code */ | |
295 | for (start = 0, skip = 0; start < ov->w.width; start = end) { | |
296 | if (skip >= nskips) { | |
297 | ri = BT848_RISC_WRITE; | |
298 | end = ov->w.width; | |
299 | } else if (start < skips[skip].start) { | |
300 | ri = BT848_RISC_WRITE; | |
301 | end = skips[skip].start; | |
302 | } else { | |
303 | ri = BT848_RISC_SKIP; | |
304 | end = skips[skip].end; | |
305 | skip++; | |
306 | } | |
307 | if (BT848_RISC_WRITE == ri) | |
308 | ra = addr + (fmt->depth>>3)*start; | |
309 | else | |
310 | ra = 0; | |
311 | ||
312 | if (0 == start) | |
313 | ri |= BT848_RISC_SOL; | |
314 | if (ov->w.width == end) | |
315 | ri |= BT848_RISC_EOL; | |
316 | ri |= (fmt->depth>>3) * (end-start); | |
317 | ||
318 | *(rp++)=cpu_to_le32(ri); | |
319 | if (0 != ra) | |
320 | *(rp++)=cpu_to_le32(ra); | |
321 | } | |
322 | } | |
323 | ||
324 | /* save pointer to jmp instruction address */ | |
325 | risc->jmp = rp; | |
4a287cfe | 326 | BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size); |
1da177e4 LT |
327 | kfree(skips); |
328 | return 0; | |
329 | } | |
330 | ||
331 | /* ---------------------------------------------------------- */ | |
332 | ||
333 | static void | |
e5bd0260 MS |
334 | bttv_calc_geo_old(struct bttv *btv, struct bttv_geometry *geo, |
335 | int width, int height, int interleaved, | |
336 | const struct bttv_tvnorm *tvnorm) | |
1da177e4 | 337 | { |
4ac97914 | 338 | u32 xsf, sr; |
1da177e4 LT |
339 | int vdelay; |
340 | ||
341 | int swidth = tvnorm->swidth; | |
342 | int totalwidth = tvnorm->totalwidth; | |
343 | int scaledtwidth = tvnorm->scaledtwidth; | |
344 | ||
5221e21e | 345 | if (btv->input == btv->dig) { |
1da177e4 LT |
346 | swidth = 720; |
347 | totalwidth = 858; | |
348 | scaledtwidth = 858; | |
349 | } | |
350 | ||
351 | vdelay = tvnorm->vdelay; | |
1da177e4 | 352 | |
4ac97914 MCC |
353 | xsf = (width*scaledtwidth)/swidth; |
354 | geo->hscale = ((totalwidth*4096UL)/xsf-4096); | |
355 | geo->hdelay = tvnorm->hdelayx1; | |
356 | geo->hdelay = (geo->hdelay*width)/swidth; | |
357 | geo->hdelay &= 0x3fe; | |
358 | sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512; | |
359 | geo->vscale = (0x10000UL-sr) & 0x1fff; | |
360 | geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) | | |
361 | ((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0); | |
362 | geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0; | |
363 | geo->vdelay = vdelay; | |
364 | geo->width = width; | |
365 | geo->sheight = tvnorm->sheight; | |
1da177e4 LT |
366 | geo->vtotal = tvnorm->vtotal; |
367 | ||
4ac97914 MCC |
368 | if (btv->opt_combfilter) { |
369 | geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0); | |
370 | geo->comb = (width < 769) ? 1 : 0; | |
371 | } else { | |
372 | geo->vtc = 0; | |
373 | geo->comb = 0; | |
374 | } | |
1da177e4 LT |
375 | } |
376 | ||
e5bd0260 MS |
377 | static void |
378 | bttv_calc_geo (struct bttv * btv, | |
379 | struct bttv_geometry * geo, | |
380 | unsigned int width, | |
381 | unsigned int height, | |
382 | int both_fields, | |
383 | const struct bttv_tvnorm * tvnorm, | |
384 | const struct v4l2_rect * crop) | |
385 | { | |
386 | unsigned int c_width; | |
387 | unsigned int c_height; | |
388 | u32 sr; | |
389 | ||
390 | if ((crop->left == tvnorm->cropcap.defrect.left | |
391 | && crop->top == tvnorm->cropcap.defrect.top | |
392 | && crop->width == tvnorm->cropcap.defrect.width | |
393 | && crop->height == tvnorm->cropcap.defrect.height | |
394 | && width <= tvnorm->swidth /* see PAL-Nc et al */) | |
5221e21e | 395 | || btv->input == btv->dig) { |
e5bd0260 MS |
396 | bttv_calc_geo_old(btv, geo, width, height, |
397 | both_fields, tvnorm); | |
398 | return; | |
399 | } | |
400 | ||
401 | /* For bug compatibility the image size checks permit scale | |
402 | factors > 16. See bttv_crop_calc_limits(). */ | |
403 | c_width = min((unsigned int) crop->width, width * 16); | |
404 | c_height = min((unsigned int) crop->height, height * 16); | |
405 | ||
406 | geo->width = width; | |
407 | geo->hscale = (c_width * 4096U + (width >> 1)) / width - 4096; | |
408 | /* Even to store Cb first, odd for Cr. */ | |
409 | geo->hdelay = ((crop->left * width + c_width) / c_width) & ~1; | |
410 | ||
411 | geo->sheight = c_height; | |
412 | geo->vdelay = crop->top - tvnorm->cropcap.bounds.top + MIN_VDELAY; | |
413 | sr = c_height >> !both_fields; | |
414 | sr = (sr * 512U + (height >> 1)) / height - 512; | |
415 | geo->vscale = (0x10000UL - sr) & 0x1fff; | |
416 | geo->vscale |= both_fields ? (BT848_VSCALE_INT << 8) : 0; | |
417 | geo->vtotal = tvnorm->vtotal; | |
418 | ||
419 | geo->crop = (((geo->width >> 8) & 0x03) | | |
420 | ((geo->hdelay >> 6) & 0x0c) | | |
421 | ((geo->sheight >> 4) & 0x30) | | |
422 | ((geo->vdelay >> 2) & 0xc0)); | |
423 | ||
424 | if (btv->opt_combfilter) { | |
425 | geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0); | |
426 | geo->comb = (width < 769) ? 1 : 0; | |
427 | } else { | |
428 | geo->vtc = 0; | |
429 | geo->comb = 0; | |
430 | } | |
431 | } | |
432 | ||
1da177e4 LT |
433 | static void |
434 | bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd) | |
435 | { | |
4ac97914 | 436 | int off = odd ? 0x80 : 0x00; |
1da177e4 LT |
437 | |
438 | if (geo->comb) | |
439 | btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); | |
440 | else | |
441 | btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); | |
442 | ||
4ac97914 MCC |
443 | btwrite(geo->vtc, BT848_E_VTC+off); |
444 | btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off); | |
445 | btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off); | |
446 | btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off); | |
447 | btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off); | |
448 | btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off); | |
449 | btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off); | |
450 | btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off); | |
451 | btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off); | |
452 | btwrite(geo->crop, BT848_E_CROP+off); | |
1da177e4 | 453 | btwrite(geo->vtotal>>8, BT848_VTOTAL_HI); |
4ac97914 | 454 | btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO); |
1da177e4 LT |
455 | } |
456 | ||
457 | /* ---------------------------------------------------------- */ | |
458 | /* risc group / risc main loop / dma management */ | |
459 | ||
460 | void | |
461 | bttv_set_dma(struct bttv *btv, int override) | |
462 | { | |
463 | unsigned long cmd; | |
464 | int capctl; | |
465 | ||
466 | btv->cap_ctl = 0; | |
467 | if (NULL != btv->curr.top) btv->cap_ctl |= 0x02; | |
468 | if (NULL != btv->curr.bottom) btv->cap_ctl |= 0x01; | |
469 | if (NULL != btv->cvbi) btv->cap_ctl |= 0x0c; | |
470 | ||
471 | capctl = 0; | |
472 | capctl |= (btv->cap_ctl & 0x03) ? 0x03 : 0x00; /* capture */ | |
473 | capctl |= (btv->cap_ctl & 0x0c) ? 0x0c : 0x00; /* vbi data */ | |
474 | capctl |= override; | |
475 | ||
476 | d2printk(KERN_DEBUG | |
477 | "bttv%d: capctl=%x lirq=%d top=%08Lx/%08Lx even=%08Lx/%08Lx\n", | |
478 | btv->c.nr,capctl,btv->loop_irq, | |
479 | btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0, | |
480 | btv->curr.top ? (unsigned long long)btv->curr.top->top.dma : 0, | |
481 | btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0, | |
482 | btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0); | |
483 | ||
484 | cmd = BT848_RISC_JUMP; | |
485 | if (btv->loop_irq) { | |
486 | cmd |= BT848_RISC_IRQ; | |
487 | cmd |= (btv->loop_irq & 0x0f) << 16; | |
488 | cmd |= (~btv->loop_irq & 0x0f) << 20; | |
489 | } | |
490 | if (btv->curr.frame_irq || btv->loop_irq || btv->cvbi) { | |
491 | mod_timer(&btv->timeout, jiffies+BTTV_TIMEOUT); | |
492 | } else { | |
493 | del_timer(&btv->timeout); | |
494 | } | |
4ac97914 | 495 | btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd); |
1da177e4 LT |
496 | |
497 | btaor(capctl, ~0x0f, BT848_CAP_CTL); | |
498 | if (capctl) { | |
499 | if (btv->dma_on) | |
500 | return; | |
501 | btwrite(btv->main.dma, BT848_RISC_STRT_ADD); | |
502 | btor(3, BT848_GPIO_DMA_CTL); | |
503 | btv->dma_on = 1; | |
504 | } else { | |
505 | if (!btv->dma_on) | |
506 | return; | |
4ac97914 | 507 | btand(~3, BT848_GPIO_DMA_CTL); |
1da177e4 LT |
508 | btv->dma_on = 0; |
509 | } | |
510 | return; | |
511 | } | |
512 | ||
513 | int | |
514 | bttv_risc_init_main(struct bttv *btv) | |
515 | { | |
516 | int rc; | |
517 | ||
518 | if ((rc = btcx_riscmem_alloc(btv->c.pci,&btv->main,PAGE_SIZE)) < 0) | |
519 | return rc; | |
520 | dprintk(KERN_DEBUG "bttv%d: risc main @ %08Lx\n", | |
521 | btv->c.nr,(unsigned long long)btv->main.dma); | |
522 | ||
523 | btv->main.cpu[0] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC | | |
524 | BT848_FIFO_STATUS_VRE); | |
525 | btv->main.cpu[1] = cpu_to_le32(0); | |
526 | btv->main.cpu[2] = cpu_to_le32(BT848_RISC_JUMP); | |
527 | btv->main.cpu[3] = cpu_to_le32(btv->main.dma + (4<<2)); | |
528 | ||
529 | /* top field */ | |
530 | btv->main.cpu[4] = cpu_to_le32(BT848_RISC_JUMP); | |
531 | btv->main.cpu[5] = cpu_to_le32(btv->main.dma + (6<<2)); | |
532 | btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP); | |
533 | btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2)); | |
534 | ||
4ac97914 | 535 | btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC | |
1da177e4 | 536 | BT848_FIFO_STATUS_VRO); |
4ac97914 | 537 | btv->main.cpu[9] = cpu_to_le32(0); |
1da177e4 LT |
538 | |
539 | /* bottom field */ | |
4ac97914 | 540 | btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP); |
1da177e4 | 541 | btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2)); |
4ac97914 | 542 | btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP); |
1da177e4 LT |
543 | btv->main.cpu[13] = cpu_to_le32(btv->main.dma + (14<<2)); |
544 | ||
545 | /* jump back to top field */ | |
546 | btv->main.cpu[14] = cpu_to_le32(BT848_RISC_JUMP); | |
4ac97914 | 547 | btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2)); |
1da177e4 LT |
548 | |
549 | return 0; | |
550 | } | |
551 | ||
552 | int | |
553 | bttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc, | |
554 | int irqflags) | |
555 | { | |
556 | unsigned long cmd; | |
557 | unsigned long next = btv->main.dma + ((slot+2) << 2); | |
558 | ||
559 | if (NULL == risc) { | |
560 | d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=NULL\n", | |
561 | btv->c.nr,risc,slot); | |
562 | btv->main.cpu[slot+1] = cpu_to_le32(next); | |
563 | } else { | |
564 | d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=%08Lx irq=%d\n", | |
565 | btv->c.nr,risc,slot,(unsigned long long)risc->dma,irqflags); | |
566 | cmd = BT848_RISC_JUMP; | |
567 | if (irqflags) { | |
568 | cmd |= BT848_RISC_IRQ; | |
569 | cmd |= (irqflags & 0x0f) << 16; | |
570 | cmd |= (~irqflags & 0x0f) << 20; | |
571 | } | |
572 | risc->jmp[0] = cpu_to_le32(cmd); | |
573 | risc->jmp[1] = cpu_to_le32(next); | |
574 | btv->main.cpu[slot+1] = cpu_to_le32(risc->dma); | |
575 | } | |
576 | return 0; | |
577 | } | |
578 | ||
579 | void | |
c7b0ac05 | 580 | bttv_dma_free(struct videobuf_queue *q,struct bttv *btv, struct bttv_buffer *buf) |
1da177e4 | 581 | { |
c1accaa2 MCC |
582 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
583 | ||
ae24601b | 584 | BUG_ON(in_interrupt()); |
1da177e4 | 585 | videobuf_waiton(&buf->vb,0,0); |
c1accaa2 MCC |
586 | videobuf_dma_unmap(q, dma); |
587 | videobuf_dma_free(dma); | |
1da177e4 LT |
588 | btcx_riscmem_free(btv->c.pci,&buf->bottom); |
589 | btcx_riscmem_free(btv->c.pci,&buf->top); | |
0fc0686e | 590 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
1da177e4 LT |
591 | } |
592 | ||
593 | int | |
594 | bttv_buffer_activate_vbi(struct bttv *btv, | |
595 | struct bttv_buffer *vbi) | |
596 | { | |
e5bd0260 MS |
597 | struct btcx_riscmem *top; |
598 | struct btcx_riscmem *bottom; | |
599 | int top_irq_flags; | |
600 | int bottom_irq_flags; | |
601 | ||
602 | top = NULL; | |
603 | bottom = NULL; | |
604 | top_irq_flags = 0; | |
605 | bottom_irq_flags = 0; | |
606 | ||
1da177e4 | 607 | if (vbi) { |
e5bd0260 MS |
608 | unsigned int crop, vdelay; |
609 | ||
0fc0686e | 610 | vbi->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 | 611 | list_del(&vbi->vb.queue); |
e5bd0260 MS |
612 | |
613 | /* VDELAY is start of video, end of VBI capturing. */ | |
614 | crop = btread(BT848_E_CROP); | |
615 | vdelay = btread(BT848_E_VDELAY_LO) + ((crop & 0xc0) << 2); | |
616 | ||
617 | if (vbi->geo.vdelay > vdelay) { | |
618 | vdelay = vbi->geo.vdelay & 0xfe; | |
619 | crop = (crop & 0x3f) | ((vbi->geo.vdelay >> 2) & 0xc0); | |
620 | ||
621 | btwrite(vdelay, BT848_E_VDELAY_LO); | |
622 | btwrite(crop, BT848_E_CROP); | |
623 | btwrite(vdelay, BT848_O_VDELAY_LO); | |
624 | btwrite(crop, BT848_O_CROP); | |
625 | } | |
626 | ||
627 | if (vbi->vbi_count[0] > 0) { | |
628 | top = &vbi->top; | |
629 | top_irq_flags = 4; | |
630 | } | |
631 | ||
632 | if (vbi->vbi_count[1] > 0) { | |
633 | top_irq_flags = 0; | |
634 | bottom = &vbi->bottom; | |
635 | bottom_irq_flags = 4; | |
636 | } | |
1da177e4 | 637 | } |
e5bd0260 MS |
638 | |
639 | bttv_risc_hook(btv, RISC_SLOT_O_VBI, top, top_irq_flags); | |
640 | bttv_risc_hook(btv, RISC_SLOT_E_VBI, bottom, bottom_irq_flags); | |
641 | ||
1da177e4 LT |
642 | return 0; |
643 | } | |
644 | ||
645 | int | |
646 | bttv_buffer_activate_video(struct bttv *btv, | |
647 | struct bttv_buffer_set *set) | |
648 | { | |
649 | /* video capture */ | |
650 | if (NULL != set->top && NULL != set->bottom) { | |
651 | if (set->top == set->bottom) { | |
0fc0686e | 652 | set->top->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
653 | if (set->top->vb.queue.next) |
654 | list_del(&set->top->vb.queue); | |
655 | } else { | |
0fc0686e BP |
656 | set->top->vb.state = VIDEOBUF_ACTIVE; |
657 | set->bottom->vb.state = VIDEOBUF_ACTIVE; | |
1da177e4 LT |
658 | if (set->top->vb.queue.next) |
659 | list_del(&set->top->vb.queue); | |
660 | if (set->bottom->vb.queue.next) | |
661 | list_del(&set->bottom->vb.queue); | |
662 | } | |
663 | bttv_apply_geo(btv, &set->top->geo, 1); | |
664 | bttv_apply_geo(btv, &set->bottom->geo,0); | |
665 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, | |
666 | set->top_irq); | |
667 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, | |
668 | set->frame_irq); | |
669 | btaor((set->top->btformat & 0xf0) | (set->bottom->btformat & 0x0f), | |
670 | ~0xff, BT848_COLOR_FMT); | |
671 | btaor((set->top->btswap & 0x0a) | (set->bottom->btswap & 0x05), | |
672 | ~0x0f, BT848_COLOR_CTL); | |
673 | } else if (NULL != set->top) { | |
0fc0686e | 674 | set->top->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
675 | if (set->top->vb.queue.next) |
676 | list_del(&set->top->vb.queue); | |
677 | bttv_apply_geo(btv, &set->top->geo,1); | |
678 | bttv_apply_geo(btv, &set->top->geo,0); | |
679 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, | |
680 | set->frame_irq); | |
681 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0); | |
682 | btaor(set->top->btformat & 0xff, ~0xff, BT848_COLOR_FMT); | |
683 | btaor(set->top->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL); | |
684 | } else if (NULL != set->bottom) { | |
0fc0686e | 685 | set->bottom->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
686 | if (set->bottom->vb.queue.next) |
687 | list_del(&set->bottom->vb.queue); | |
688 | bttv_apply_geo(btv, &set->bottom->geo,1); | |
689 | bttv_apply_geo(btv, &set->bottom->geo,0); | |
690 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0); | |
691 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, | |
692 | set->frame_irq); | |
693 | btaor(set->bottom->btformat & 0xff, ~0xff, BT848_COLOR_FMT); | |
694 | btaor(set->bottom->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL); | |
695 | } else { | |
696 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0); | |
697 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0); | |
698 | } | |
699 | return 0; | |
700 | } | |
701 | ||
702 | /* ---------------------------------------------------------- */ | |
703 | ||
704 | /* calculate geometry, build risc code */ | |
705 | int | |
706 | bttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf) | |
707 | { | |
708 | const struct bttv_tvnorm *tvnorm = bttv_tvnorms + buf->tvnorm; | |
c1accaa2 | 709 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
1da177e4 LT |
710 | |
711 | dprintk(KERN_DEBUG | |
712 | "bttv%d: buffer field: %s format: %s size: %dx%d\n", | |
713 | btv->c.nr, v4l2_field_names[buf->vb.field], | |
714 | buf->fmt->name, buf->vb.width, buf->vb.height); | |
715 | ||
716 | /* packed pixel modes */ | |
717 | if (buf->fmt->flags & FORMAT_FLAGS_PACKED) { | |
718 | int bpl = (buf->fmt->depth >> 3) * buf->vb.width; | |
719 | int bpf = bpl * (buf->vb.height >> 1); | |
720 | ||
721 | bttv_calc_geo(btv,&buf->geo,buf->vb.width,buf->vb.height, | |
e5bd0260 MS |
722 | V4L2_FIELD_HAS_BOTH(buf->vb.field), |
723 | tvnorm,&buf->crop); | |
1da177e4 LT |
724 | |
725 | switch (buf->vb.field) { | |
726 | case V4L2_FIELD_TOP: | |
c1accaa2 | 727 | bttv_risc_packed(btv,&buf->top,dma->sglist, |
e5bd0260 MS |
728 | /* offset */ 0,bpl, |
729 | /* padding */ 0,/* skip_lines */ 0, | |
730 | buf->vb.height); | |
1da177e4 LT |
731 | break; |
732 | case V4L2_FIELD_BOTTOM: | |
c1accaa2 | 733 | bttv_risc_packed(btv,&buf->bottom,dma->sglist, |
e5bd0260 | 734 | 0,bpl,0,0,buf->vb.height); |
1da177e4 LT |
735 | break; |
736 | case V4L2_FIELD_INTERLACED: | |
c1accaa2 | 737 | bttv_risc_packed(btv,&buf->top,dma->sglist, |
e5bd0260 | 738 | 0,bpl,bpl,0,buf->vb.height >> 1); |
c1accaa2 | 739 | bttv_risc_packed(btv,&buf->bottom,dma->sglist, |
e5bd0260 | 740 | bpl,bpl,bpl,0,buf->vb.height >> 1); |
1da177e4 LT |
741 | break; |
742 | case V4L2_FIELD_SEQ_TB: | |
c1accaa2 | 743 | bttv_risc_packed(btv,&buf->top,dma->sglist, |
e5bd0260 | 744 | 0,bpl,0,0,buf->vb.height >> 1); |
c1accaa2 | 745 | bttv_risc_packed(btv,&buf->bottom,dma->sglist, |
e5bd0260 | 746 | bpf,bpl,0,0,buf->vb.height >> 1); |
1da177e4 LT |
747 | break; |
748 | default: | |
749 | BUG(); | |
750 | } | |
751 | } | |
752 | ||
753 | /* planar modes */ | |
754 | if (buf->fmt->flags & FORMAT_FLAGS_PLANAR) { | |
755 | int uoffset, voffset; | |
756 | int ypadding, cpadding, lines; | |
757 | ||
758 | /* calculate chroma offsets */ | |
759 | uoffset = buf->vb.width * buf->vb.height; | |
760 | voffset = buf->vb.width * buf->vb.height; | |
761 | if (buf->fmt->flags & FORMAT_FLAGS_CrCb) { | |
762 | /* Y-Cr-Cb plane order */ | |
763 | uoffset >>= buf->fmt->hshift; | |
764 | uoffset >>= buf->fmt->vshift; | |
765 | uoffset += voffset; | |
766 | } else { | |
767 | /* Y-Cb-Cr plane order */ | |
768 | voffset >>= buf->fmt->hshift; | |
769 | voffset >>= buf->fmt->vshift; | |
770 | voffset += uoffset; | |
771 | } | |
772 | ||
773 | switch (buf->vb.field) { | |
774 | case V4L2_FIELD_TOP: | |
775 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, | |
e5bd0260 MS |
776 | buf->vb.height,/* both_fields */ 0, |
777 | tvnorm,&buf->crop); | |
c1accaa2 | 778 | bttv_risc_planar(btv, &buf->top, dma->sglist, |
1da177e4 LT |
779 | 0,buf->vb.width,0,buf->vb.height, |
780 | uoffset,voffset,buf->fmt->hshift, | |
781 | buf->fmt->vshift,0); | |
782 | break; | |
783 | case V4L2_FIELD_BOTTOM: | |
784 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, | |
e5bd0260 MS |
785 | buf->vb.height,0, |
786 | tvnorm,&buf->crop); | |
c1accaa2 | 787 | bttv_risc_planar(btv, &buf->bottom, dma->sglist, |
1da177e4 LT |
788 | 0,buf->vb.width,0,buf->vb.height, |
789 | uoffset,voffset,buf->fmt->hshift, | |
790 | buf->fmt->vshift,0); | |
791 | break; | |
792 | case V4L2_FIELD_INTERLACED: | |
793 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, | |
e5bd0260 MS |
794 | buf->vb.height,1, |
795 | tvnorm,&buf->crop); | |
1da177e4 LT |
796 | lines = buf->vb.height >> 1; |
797 | ypadding = buf->vb.width; | |
798 | cpadding = buf->vb.width >> buf->fmt->hshift; | |
799 | bttv_risc_planar(btv,&buf->top, | |
c1accaa2 | 800 | dma->sglist, |
1da177e4 LT |
801 | 0,buf->vb.width,ypadding,lines, |
802 | uoffset,voffset, | |
803 | buf->fmt->hshift, | |
804 | buf->fmt->vshift, | |
805 | cpadding); | |
806 | bttv_risc_planar(btv,&buf->bottom, | |
c1accaa2 | 807 | dma->sglist, |
1da177e4 LT |
808 | ypadding,buf->vb.width,ypadding,lines, |
809 | uoffset+cpadding, | |
810 | voffset+cpadding, | |
811 | buf->fmt->hshift, | |
812 | buf->fmt->vshift, | |
813 | cpadding); | |
814 | break; | |
815 | case V4L2_FIELD_SEQ_TB: | |
816 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, | |
e5bd0260 MS |
817 | buf->vb.height,1, |
818 | tvnorm,&buf->crop); | |
1da177e4 LT |
819 | lines = buf->vb.height >> 1; |
820 | ypadding = buf->vb.width; | |
821 | cpadding = buf->vb.width >> buf->fmt->hshift; | |
822 | bttv_risc_planar(btv,&buf->top, | |
c1accaa2 | 823 | dma->sglist, |
1da177e4 LT |
824 | 0,buf->vb.width,0,lines, |
825 | uoffset >> 1, | |
826 | voffset >> 1, | |
827 | buf->fmt->hshift, | |
828 | buf->fmt->vshift, | |
829 | 0); | |
830 | bttv_risc_planar(btv,&buf->bottom, | |
c1accaa2 | 831 | dma->sglist, |
1da177e4 LT |
832 | lines * ypadding,buf->vb.width,0,lines, |
833 | lines * ypadding + (uoffset >> 1), | |
834 | lines * ypadding + (voffset >> 1), | |
835 | buf->fmt->hshift, | |
836 | buf->fmt->vshift, | |
837 | 0); | |
838 | break; | |
839 | default: | |
840 | BUG(); | |
841 | } | |
842 | } | |
843 | ||
844 | /* raw data */ | |
845 | if (buf->fmt->flags & FORMAT_FLAGS_RAW) { | |
846 | /* build risc code */ | |
847 | buf->vb.field = V4L2_FIELD_SEQ_TB; | |
848 | bttv_calc_geo(btv,&buf->geo,tvnorm->swidth,tvnorm->sheight, | |
e5bd0260 | 849 | 1,tvnorm,&buf->crop); |
c1accaa2 | 850 | bttv_risc_packed(btv, &buf->top, dma->sglist, |
e5bd0260 MS |
851 | /* offset */ 0, RAW_BPL, /* padding */ 0, |
852 | /* skip_lines */ 0, RAW_LINES); | |
c1accaa2 | 853 | bttv_risc_packed(btv, &buf->bottom, dma->sglist, |
e5bd0260 | 854 | buf->vb.size/2 , RAW_BPL, 0, 0, RAW_LINES); |
1da177e4 LT |
855 | } |
856 | ||
857 | /* copy format info */ | |
858 | buf->btformat = buf->fmt->btformat; | |
859 | buf->btswap = buf->fmt->btswap; | |
860 | return 0; | |
861 | } | |
862 | ||
863 | /* ---------------------------------------------------------- */ | |
864 | ||
865 | /* calculate geometry, build risc code */ | |
866 | int | |
867 | bttv_overlay_risc(struct bttv *btv, | |
868 | struct bttv_overlay *ov, | |
869 | const struct bttv_format *fmt, | |
870 | struct bttv_buffer *buf) | |
871 | { | |
872 | /* check interleave, bottom+top fields */ | |
873 | dprintk(KERN_DEBUG | |
874 | "bttv%d: overlay fields: %s format: %s size: %dx%d\n", | |
875 | btv->c.nr, v4l2_field_names[buf->vb.field], | |
876 | fmt->name,ov->w.width,ov->w.height); | |
877 | ||
878 | /* calculate geometry */ | |
879 | bttv_calc_geo(btv,&buf->geo,ov->w.width,ov->w.height, | |
e5bd0260 MS |
880 | V4L2_FIELD_HAS_BOTH(ov->field), |
881 | &bttv_tvnorms[ov->tvnorm],&buf->crop); | |
1da177e4 LT |
882 | |
883 | /* build risc code */ | |
884 | switch (ov->field) { | |
885 | case V4L2_FIELD_TOP: | |
886 | bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 0); | |
887 | break; | |
888 | case V4L2_FIELD_BOTTOM: | |
889 | bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 0); | |
890 | break; | |
891 | case V4L2_FIELD_INTERLACED: | |
1da177e4 LT |
892 | bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 1); |
893 | bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 1, 0); | |
1da177e4 LT |
894 | break; |
895 | default: | |
896 | BUG(); | |
897 | } | |
898 | ||
899 | /* copy format info */ | |
900 | buf->btformat = fmt->btformat; | |
901 | buf->btswap = fmt->btswap; | |
902 | buf->vb.field = ov->field; | |
903 | return 0; | |
904 | } | |
905 | ||
906 | /* | |
907 | * Local variables: | |
908 | * c-basic-offset: 8 | |
909 | * End: | |
910 | */ |