Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
| 29 | #include <linux/pci.h> |
| 30 | #include <linux/vmalloc.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <asm/page.h> |
| 33 | #include <asm/pgtable.h> |
| 34 | |
| 35 | #include "bttvp.h" |
| 36 | |
| 37 | #define VCR_HACK_LINES 4 |
| 38 | |
| 39 | /* ---------------------------------------------------------- */ |
| 40 | /* risc code generators */ |
| 41 | |
| 42 | int |
| 43 | bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc, |
| 44 | struct scatterlist *sglist, |
| 45 | unsigned int offset, unsigned int bpl, |
| 46 | unsigned int padding, unsigned int lines) |
| 47 | { |
| 48 | u32 instructions,line,todo; |
| 49 | struct scatterlist *sg; |
| 50 | u32 *rp; |
| 51 | int rc; |
| 52 | |
| 53 | /* estimate risc mem: worst case is one write per page border + |
| 54 | one write per scan line + sync + jump (all 2 dwords) */ |
| 55 | instructions = (bpl * lines) / PAGE_SIZE + lines; |
| 56 | instructions += 2; |
| 57 | if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0) |
| 58 | return rc; |
| 59 | |
| 60 | /* sync instruction */ |
| 61 | rp = risc->cpu; |
| 62 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); |
| 63 | *(rp++) = cpu_to_le32(0); |
| 64 | |
| 65 | /* scan lines */ |
| 66 | sg = sglist; |
| 67 | for (line = 0; line < lines; line++) { |
| 68 | if ((btv->opt_vcr_hack) && |
| 69 | (line >= (lines - VCR_HACK_LINES))) |
| 70 | continue; |
| 71 | while (offset && offset >= sg_dma_len(sg)) { |
| 72 | offset -= sg_dma_len(sg); |
| 73 | sg++; |
| 74 | } |
| 75 | if (bpl <= sg_dma_len(sg)-offset) { |
| 76 | /* fits into current chunk */ |
| 77 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| |
| 78 | BT848_RISC_EOL|bpl); |
| 79 | *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); |
| 80 | offset+=bpl; |
| 81 | } else { |
| 82 | /* scanline needs to be splitted */ |
| 83 | todo = bpl; |
| 84 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| |
| 85 | (sg_dma_len(sg)-offset)); |
| 86 | *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); |
| 87 | todo -= (sg_dma_len(sg)-offset); |
| 88 | offset = 0; |
| 89 | sg++; |
| 90 | while (todo > sg_dma_len(sg)) { |
| 91 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE| |
| 92 | sg_dma_len(sg)); |
| 93 | *(rp++)=cpu_to_le32(sg_dma_address(sg)); |
| 94 | todo -= sg_dma_len(sg); |
| 95 | sg++; |
| 96 | } |
| 97 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL| |
| 98 | todo); |
| 99 | *(rp++)=cpu_to_le32(sg_dma_address(sg)); |
| 100 | offset += todo; |
| 101 | } |
| 102 | offset += padding; |
| 103 | } |
| 104 | |
| 105 | /* save pointer to jmp instruction address */ |
| 106 | risc->jmp = rp; |
| 107 | BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size); |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static int |
| 112 | bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc, |
| 113 | struct scatterlist *sglist, |
| 114 | unsigned int yoffset, unsigned int ybpl, |
| 115 | unsigned int ypadding, unsigned int ylines, |
| 116 | unsigned int uoffset, unsigned int voffset, |
| 117 | unsigned int hshift, unsigned int vshift, |
| 118 | unsigned int cpadding) |
| 119 | { |
| 120 | unsigned int instructions,line,todo,ylen,chroma; |
| 121 | u32 *rp,ri; |
| 122 | struct scatterlist *ysg; |
| 123 | struct scatterlist *usg; |
| 124 | struct scatterlist *vsg; |
| 125 | int topfield = (0 == yoffset); |
| 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->c.pci,risc,instructions*4*5)) < 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: |
| 151 | chroma = 1; |
| 152 | break; |
| 153 | case 1: |
| 154 | if (topfield) |
| 155 | chroma = ((line & 1) == 0); |
| 156 | else |
| 157 | chroma = ((line & 1) == 1); |
| 158 | break; |
| 159 | case 2: |
| 160 | if (topfield) |
| 161 | chroma = ((line & 3) == 0); |
| 162 | else |
| 163 | chroma = ((line & 3) == 2); |
| 164 | break; |
| 165 | default: |
| 166 | chroma = 0; |
| 167 | break; |
| 168 | } |
| 169 | |
| 170 | for (todo = ybpl; todo > 0; todo -= ylen) { |
| 171 | /* go to next sg entry if needed */ |
| 172 | while (yoffset && yoffset >= sg_dma_len(ysg)) { |
| 173 | yoffset -= sg_dma_len(ysg); |
| 174 | ysg++; |
| 175 | } |
| 176 | while (uoffset && uoffset >= sg_dma_len(usg)) { |
| 177 | uoffset -= sg_dma_len(usg); |
| 178 | usg++; |
| 179 | } |
| 180 | while (voffset && voffset >= sg_dma_len(vsg)) { |
| 181 | voffset -= sg_dma_len(vsg); |
| 182 | vsg++; |
| 183 | } |
| 184 | |
| 185 | /* calculate max number of bytes we can write */ |
| 186 | ylen = todo; |
| 187 | if (yoffset + ylen > sg_dma_len(ysg)) |
| 188 | ylen = sg_dma_len(ysg) - yoffset; |
| 189 | if (chroma) { |
| 190 | if (uoffset + (ylen>>hshift) > sg_dma_len(usg)) |
| 191 | ylen = (sg_dma_len(usg) - uoffset) << hshift; |
| 192 | if (voffset + (ylen>>hshift) > sg_dma_len(vsg)) |
| 193 | ylen = (sg_dma_len(vsg) - voffset) << hshift; |
| 194 | ri = BT848_RISC_WRITE123; |
| 195 | } else { |
| 196 | ri = BT848_RISC_WRITE1S23; |
| 197 | } |
| 198 | if (ybpl == todo) |
| 199 | ri |= BT848_RISC_SOL; |
| 200 | if (ylen == todo) |
| 201 | ri |= BT848_RISC_EOL; |
| 202 | |
| 203 | /* write risc instruction */ |
| 204 | *(rp++)=cpu_to_le32(ri | ylen); |
| 205 | *(rp++)=cpu_to_le32(((ylen >> hshift) << 16) | |
| 206 | (ylen >> hshift)); |
| 207 | *(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset); |
| 208 | yoffset += ylen; |
| 209 | if (chroma) { |
| 210 | *(rp++)=cpu_to_le32(sg_dma_address(usg)+uoffset); |
| 211 | uoffset += ylen >> hshift; |
| 212 | *(rp++)=cpu_to_le32(sg_dma_address(vsg)+voffset); |
| 213 | voffset += ylen >> hshift; |
| 214 | } |
| 215 | } |
| 216 | yoffset += ypadding; |
| 217 | if (chroma) { |
| 218 | uoffset += cpadding; |
| 219 | voffset += cpadding; |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | /* save pointer to jmp instruction address */ |
| 224 | risc->jmp = rp; |
| 225 | BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size); |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static int |
| 230 | bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc, |
| 231 | const struct bttv_format *fmt, struct bttv_overlay *ov, |
| 232 | int skip_even, int skip_odd) |
| 233 | { |
| 234 | int instructions,rc,line,maxy,start,end,skip,nskips; |
| 235 | struct btcx_skiplist *skips; |
| 236 | u32 *rp,ri,ra; |
| 237 | u32 addr; |
| 238 | |
| 239 | /* skip list for window clipping */ |
| 240 | if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL))) |
| 241 | return -ENOMEM; |
| 242 | |
| 243 | /* estimate risc mem: worst case is (clip+1) * lines instructions |
| 244 | + sync + jump (all 2 dwords) */ |
| 245 | instructions = (ov->nclips + 1) * |
| 246 | ((skip_even || skip_odd) ? ov->w.height>>1 : ov->w.height); |
| 247 | instructions += 2; |
| 248 | if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0) { |
| 249 | kfree(skips); |
| 250 | return rc; |
| 251 | } |
| 252 | |
| 253 | /* sync instruction */ |
| 254 | rp = risc->cpu; |
| 255 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); |
| 256 | *(rp++) = cpu_to_le32(0); |
| 257 | |
| 258 | addr = (unsigned long)btv->fbuf.base; |
| 259 | addr += btv->fbuf.fmt.bytesperline * ov->w.top; |
| 260 | addr += (fmt->depth >> 3) * ov->w.left; |
| 261 | |
| 262 | /* scan lines */ |
| 263 | for (maxy = -1, line = 0; line < ov->w.height; |
| 264 | line++, addr += btv->fbuf.fmt.bytesperline) { |
| 265 | if ((btv->opt_vcr_hack) && |
| 266 | (line >= (ov->w.height - VCR_HACK_LINES))) |
| 267 | continue; |
| 268 | if ((line%2) == 0 && skip_even) |
| 269 | continue; |
| 270 | if ((line%2) == 1 && skip_odd) |
| 271 | continue; |
| 272 | |
| 273 | /* calculate clipping */ |
| 274 | if (line > maxy) |
| 275 | btcx_calc_skips(line, ov->w.width, &maxy, |
| 276 | skips, &nskips, ov->clips, ov->nclips); |
| 277 | |
| 278 | /* write out risc code */ |
| 279 | for (start = 0, skip = 0; start < ov->w.width; start = end) { |
| 280 | if (skip >= nskips) { |
| 281 | ri = BT848_RISC_WRITE; |
| 282 | end = ov->w.width; |
| 283 | } else if (start < skips[skip].start) { |
| 284 | ri = BT848_RISC_WRITE; |
| 285 | end = skips[skip].start; |
| 286 | } else { |
| 287 | ri = BT848_RISC_SKIP; |
| 288 | end = skips[skip].end; |
| 289 | skip++; |
| 290 | } |
| 291 | if (BT848_RISC_WRITE == ri) |
| 292 | ra = addr + (fmt->depth>>3)*start; |
| 293 | else |
| 294 | ra = 0; |
| 295 | |
| 296 | if (0 == start) |
| 297 | ri |= BT848_RISC_SOL; |
| 298 | if (ov->w.width == end) |
| 299 | ri |= BT848_RISC_EOL; |
| 300 | ri |= (fmt->depth>>3) * (end-start); |
| 301 | |
| 302 | *(rp++)=cpu_to_le32(ri); |
| 303 | if (0 != ra) |
| 304 | *(rp++)=cpu_to_le32(ra); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | /* save pointer to jmp instruction address */ |
| 309 | risc->jmp = rp; |
| 310 | BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size); |
| 311 | kfree(skips); |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | /* ---------------------------------------------------------- */ |
| 316 | |
| 317 | static void |
| 318 | bttv_calc_geo(struct bttv *btv, struct bttv_geometry *geo, |
| 319 | int width, int height, int interleaved, int norm) |
| 320 | { |
| 321 | const struct bttv_tvnorm *tvnorm = &bttv_tvnorms[norm]; |
| 322 | u32 xsf, sr; |
| 323 | int vdelay; |
| 324 | |
| 325 | int swidth = tvnorm->swidth; |
| 326 | int totalwidth = tvnorm->totalwidth; |
| 327 | int scaledtwidth = tvnorm->scaledtwidth; |
| 328 | |
| 329 | if (bttv_tvcards[btv->c.type].muxsel[btv->input] < 0) { |
| 330 | swidth = 720; |
| 331 | totalwidth = 858; |
| 332 | scaledtwidth = 858; |
| 333 | } |
| 334 | |
| 335 | vdelay = tvnorm->vdelay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | xsf = (width*scaledtwidth)/swidth; |
| 338 | geo->hscale = ((totalwidth*4096UL)/xsf-4096); |
| 339 | geo->hdelay = tvnorm->hdelayx1; |
| 340 | geo->hdelay = (geo->hdelay*width)/swidth; |
| 341 | geo->hdelay &= 0x3fe; |
| 342 | sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512; |
| 343 | geo->vscale = (0x10000UL-sr) & 0x1fff; |
| 344 | geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) | |
| 345 | ((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0); |
| 346 | geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0; |
| 347 | geo->vdelay = vdelay; |
| 348 | geo->width = width; |
| 349 | geo->sheight = tvnorm->sheight; |
| 350 | geo->vtotal = tvnorm->vtotal; |
| 351 | |
| 352 | if (btv->opt_combfilter) { |
| 353 | geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0); |
| 354 | geo->comb = (width < 769) ? 1 : 0; |
| 355 | } else { |
| 356 | geo->vtc = 0; |
| 357 | geo->comb = 0; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | static void |
| 362 | bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd) |
| 363 | { |
| 364 | int off = odd ? 0x80 : 0x00; |
| 365 | |
| 366 | if (geo->comb) |
| 367 | btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); |
| 368 | else |
| 369 | btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); |
| 370 | |
| 371 | btwrite(geo->vtc, BT848_E_VTC+off); |
| 372 | btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off); |
| 373 | btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off); |
| 374 | btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off); |
| 375 | btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off); |
| 376 | btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off); |
| 377 | btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off); |
| 378 | btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off); |
| 379 | btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off); |
| 380 | btwrite(geo->crop, BT848_E_CROP+off); |
| 381 | btwrite(geo->vtotal>>8, BT848_VTOTAL_HI); |
| 382 | btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO); |
| 383 | } |
| 384 | |
| 385 | /* ---------------------------------------------------------- */ |
| 386 | /* risc group / risc main loop / dma management */ |
| 387 | |
| 388 | void |
| 389 | bttv_set_dma(struct bttv *btv, int override) |
| 390 | { |
| 391 | unsigned long cmd; |
| 392 | int capctl; |
| 393 | |
| 394 | btv->cap_ctl = 0; |
| 395 | if (NULL != btv->curr.top) btv->cap_ctl |= 0x02; |
| 396 | if (NULL != btv->curr.bottom) btv->cap_ctl |= 0x01; |
| 397 | if (NULL != btv->cvbi) btv->cap_ctl |= 0x0c; |
| 398 | |
| 399 | capctl = 0; |
| 400 | capctl |= (btv->cap_ctl & 0x03) ? 0x03 : 0x00; /* capture */ |
| 401 | capctl |= (btv->cap_ctl & 0x0c) ? 0x0c : 0x00; /* vbi data */ |
| 402 | capctl |= override; |
| 403 | |
| 404 | d2printk(KERN_DEBUG |
| 405 | "bttv%d: capctl=%x lirq=%d top=%08Lx/%08Lx even=%08Lx/%08Lx\n", |
| 406 | btv->c.nr,capctl,btv->loop_irq, |
| 407 | btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0, |
| 408 | btv->curr.top ? (unsigned long long)btv->curr.top->top.dma : 0, |
| 409 | btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0, |
| 410 | btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0); |
| 411 | |
| 412 | cmd = BT848_RISC_JUMP; |
| 413 | if (btv->loop_irq) { |
| 414 | cmd |= BT848_RISC_IRQ; |
| 415 | cmd |= (btv->loop_irq & 0x0f) << 16; |
| 416 | cmd |= (~btv->loop_irq & 0x0f) << 20; |
| 417 | } |
| 418 | if (btv->curr.frame_irq || btv->loop_irq || btv->cvbi) { |
| 419 | mod_timer(&btv->timeout, jiffies+BTTV_TIMEOUT); |
| 420 | } else { |
| 421 | del_timer(&btv->timeout); |
| 422 | } |
| 423 | btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd); |
| 424 | |
| 425 | btaor(capctl, ~0x0f, BT848_CAP_CTL); |
| 426 | if (capctl) { |
| 427 | if (btv->dma_on) |
| 428 | return; |
| 429 | btwrite(btv->main.dma, BT848_RISC_STRT_ADD); |
| 430 | btor(3, BT848_GPIO_DMA_CTL); |
| 431 | btv->dma_on = 1; |
| 432 | } else { |
| 433 | if (!btv->dma_on) |
| 434 | return; |
| 435 | btand(~3, BT848_GPIO_DMA_CTL); |
| 436 | btv->dma_on = 0; |
| 437 | } |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | int |
| 442 | bttv_risc_init_main(struct bttv *btv) |
| 443 | { |
| 444 | int rc; |
| 445 | |
| 446 | if ((rc = btcx_riscmem_alloc(btv->c.pci,&btv->main,PAGE_SIZE)) < 0) |
| 447 | return rc; |
| 448 | dprintk(KERN_DEBUG "bttv%d: risc main @ %08Lx\n", |
| 449 | btv->c.nr,(unsigned long long)btv->main.dma); |
| 450 | |
| 451 | btv->main.cpu[0] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC | |
| 452 | BT848_FIFO_STATUS_VRE); |
| 453 | btv->main.cpu[1] = cpu_to_le32(0); |
| 454 | btv->main.cpu[2] = cpu_to_le32(BT848_RISC_JUMP); |
| 455 | btv->main.cpu[3] = cpu_to_le32(btv->main.dma + (4<<2)); |
| 456 | |
| 457 | /* top field */ |
| 458 | btv->main.cpu[4] = cpu_to_le32(BT848_RISC_JUMP); |
| 459 | btv->main.cpu[5] = cpu_to_le32(btv->main.dma + (6<<2)); |
| 460 | btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP); |
| 461 | btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2)); |
| 462 | |
| 463 | btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC | |
| 464 | BT848_FIFO_STATUS_VRO); |
| 465 | btv->main.cpu[9] = cpu_to_le32(0); |
| 466 | |
| 467 | /* bottom field */ |
| 468 | btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP); |
| 469 | btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2)); |
| 470 | btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP); |
| 471 | btv->main.cpu[13] = cpu_to_le32(btv->main.dma + (14<<2)); |
| 472 | |
| 473 | /* jump back to top field */ |
| 474 | btv->main.cpu[14] = cpu_to_le32(BT848_RISC_JUMP); |
| 475 | btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2)); |
| 476 | |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | int |
| 481 | bttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc, |
| 482 | int irqflags) |
| 483 | { |
| 484 | unsigned long cmd; |
| 485 | unsigned long next = btv->main.dma + ((slot+2) << 2); |
| 486 | |
| 487 | if (NULL == risc) { |
| 488 | d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=NULL\n", |
| 489 | btv->c.nr,risc,slot); |
| 490 | btv->main.cpu[slot+1] = cpu_to_le32(next); |
| 491 | } else { |
| 492 | d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=%08Lx irq=%d\n", |
| 493 | btv->c.nr,risc,slot,(unsigned long long)risc->dma,irqflags); |
| 494 | cmd = BT848_RISC_JUMP; |
| 495 | if (irqflags) { |
| 496 | cmd |= BT848_RISC_IRQ; |
| 497 | cmd |= (irqflags & 0x0f) << 16; |
| 498 | cmd |= (~irqflags & 0x0f) << 20; |
| 499 | } |
| 500 | risc->jmp[0] = cpu_to_le32(cmd); |
| 501 | risc->jmp[1] = cpu_to_le32(next); |
| 502 | btv->main.cpu[slot+1] = cpu_to_le32(risc->dma); |
| 503 | } |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | void |
| 508 | bttv_dma_free(struct bttv *btv, struct bttv_buffer *buf) |
| 509 | { |
| 510 | if (in_interrupt()) |
| 511 | BUG(); |
| 512 | videobuf_waiton(&buf->vb,0,0); |
| 513 | videobuf_dma_pci_unmap(btv->c.pci, &buf->vb.dma); |
| 514 | videobuf_dma_free(&buf->vb.dma); |
| 515 | btcx_riscmem_free(btv->c.pci,&buf->bottom); |
| 516 | btcx_riscmem_free(btv->c.pci,&buf->top); |
| 517 | buf->vb.state = STATE_NEEDS_INIT; |
| 518 | } |
| 519 | |
| 520 | int |
| 521 | bttv_buffer_activate_vbi(struct bttv *btv, |
| 522 | struct bttv_buffer *vbi) |
| 523 | { |
| 524 | /* vbi capture */ |
| 525 | if (vbi) { |
| 526 | vbi->vb.state = STATE_ACTIVE; |
| 527 | list_del(&vbi->vb.queue); |
| 528 | bttv_risc_hook(btv, RISC_SLOT_O_VBI, &vbi->top, 0); |
| 529 | bttv_risc_hook(btv, RISC_SLOT_E_VBI, &vbi->bottom, 4); |
| 530 | } else { |
| 531 | bttv_risc_hook(btv, RISC_SLOT_O_VBI, NULL, 0); |
| 532 | bttv_risc_hook(btv, RISC_SLOT_E_VBI, NULL, 0); |
| 533 | } |
| 534 | return 0; |
| 535 | } |
| 536 | |
| 537 | int |
| 538 | bttv_buffer_activate_video(struct bttv *btv, |
| 539 | struct bttv_buffer_set *set) |
| 540 | { |
| 541 | /* video capture */ |
| 542 | if (NULL != set->top && NULL != set->bottom) { |
| 543 | if (set->top == set->bottom) { |
| 544 | set->top->vb.state = STATE_ACTIVE; |
| 545 | if (set->top->vb.queue.next) |
| 546 | list_del(&set->top->vb.queue); |
| 547 | } else { |
| 548 | set->top->vb.state = STATE_ACTIVE; |
| 549 | set->bottom->vb.state = STATE_ACTIVE; |
| 550 | if (set->top->vb.queue.next) |
| 551 | list_del(&set->top->vb.queue); |
| 552 | if (set->bottom->vb.queue.next) |
| 553 | list_del(&set->bottom->vb.queue); |
| 554 | } |
| 555 | bttv_apply_geo(btv, &set->top->geo, 1); |
| 556 | bttv_apply_geo(btv, &set->bottom->geo,0); |
| 557 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, |
| 558 | set->top_irq); |
| 559 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, |
| 560 | set->frame_irq); |
| 561 | btaor((set->top->btformat & 0xf0) | (set->bottom->btformat & 0x0f), |
| 562 | ~0xff, BT848_COLOR_FMT); |
| 563 | btaor((set->top->btswap & 0x0a) | (set->bottom->btswap & 0x05), |
| 564 | ~0x0f, BT848_COLOR_CTL); |
| 565 | } else if (NULL != set->top) { |
| 566 | set->top->vb.state = STATE_ACTIVE; |
| 567 | if (set->top->vb.queue.next) |
| 568 | list_del(&set->top->vb.queue); |
| 569 | bttv_apply_geo(btv, &set->top->geo,1); |
| 570 | bttv_apply_geo(btv, &set->top->geo,0); |
| 571 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top, |
| 572 | set->frame_irq); |
| 573 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0); |
| 574 | btaor(set->top->btformat & 0xff, ~0xff, BT848_COLOR_FMT); |
| 575 | btaor(set->top->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL); |
| 576 | } else if (NULL != set->bottom) { |
| 577 | set->bottom->vb.state = STATE_ACTIVE; |
| 578 | if (set->bottom->vb.queue.next) |
| 579 | list_del(&set->bottom->vb.queue); |
| 580 | bttv_apply_geo(btv, &set->bottom->geo,1); |
| 581 | bttv_apply_geo(btv, &set->bottom->geo,0); |
| 582 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0); |
| 583 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom, |
| 584 | set->frame_irq); |
| 585 | btaor(set->bottom->btformat & 0xff, ~0xff, BT848_COLOR_FMT); |
| 586 | btaor(set->bottom->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL); |
| 587 | } else { |
| 588 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0); |
| 589 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0); |
| 590 | } |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | /* ---------------------------------------------------------- */ |
| 595 | |
| 596 | /* calculate geometry, build risc code */ |
| 597 | int |
| 598 | bttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf) |
| 599 | { |
| 600 | const struct bttv_tvnorm *tvnorm = bttv_tvnorms + buf->tvnorm; |
| 601 | |
| 602 | dprintk(KERN_DEBUG |
| 603 | "bttv%d: buffer field: %s format: %s size: %dx%d\n", |
| 604 | btv->c.nr, v4l2_field_names[buf->vb.field], |
| 605 | buf->fmt->name, buf->vb.width, buf->vb.height); |
| 606 | |
| 607 | /* packed pixel modes */ |
| 608 | if (buf->fmt->flags & FORMAT_FLAGS_PACKED) { |
| 609 | int bpl = (buf->fmt->depth >> 3) * buf->vb.width; |
| 610 | int bpf = bpl * (buf->vb.height >> 1); |
| 611 | |
| 612 | bttv_calc_geo(btv,&buf->geo,buf->vb.width,buf->vb.height, |
| 613 | V4L2_FIELD_HAS_BOTH(buf->vb.field),buf->tvnorm); |
| 614 | |
| 615 | switch (buf->vb.field) { |
| 616 | case V4L2_FIELD_TOP: |
| 617 | bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist, |
| 618 | 0,bpl,0,buf->vb.height); |
| 619 | break; |
| 620 | case V4L2_FIELD_BOTTOM: |
| 621 | bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist, |
| 622 | 0,bpl,0,buf->vb.height); |
| 623 | break; |
| 624 | case V4L2_FIELD_INTERLACED: |
| 625 | bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist, |
| 626 | 0,bpl,bpl,buf->vb.height >> 1); |
| 627 | bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist, |
| 628 | bpl,bpl,bpl,buf->vb.height >> 1); |
| 629 | break; |
| 630 | case V4L2_FIELD_SEQ_TB: |
| 631 | bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist, |
| 632 | 0,bpl,0,buf->vb.height >> 1); |
| 633 | bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist, |
| 634 | bpf,bpl,0,buf->vb.height >> 1); |
| 635 | break; |
| 636 | default: |
| 637 | BUG(); |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | /* planar modes */ |
| 642 | if (buf->fmt->flags & FORMAT_FLAGS_PLANAR) { |
| 643 | int uoffset, voffset; |
| 644 | int ypadding, cpadding, lines; |
| 645 | |
| 646 | /* calculate chroma offsets */ |
| 647 | uoffset = buf->vb.width * buf->vb.height; |
| 648 | voffset = buf->vb.width * buf->vb.height; |
| 649 | if (buf->fmt->flags & FORMAT_FLAGS_CrCb) { |
| 650 | /* Y-Cr-Cb plane order */ |
| 651 | uoffset >>= buf->fmt->hshift; |
| 652 | uoffset >>= buf->fmt->vshift; |
| 653 | uoffset += voffset; |
| 654 | } else { |
| 655 | /* Y-Cb-Cr plane order */ |
| 656 | voffset >>= buf->fmt->hshift; |
| 657 | voffset >>= buf->fmt->vshift; |
| 658 | voffset += uoffset; |
| 659 | } |
| 660 | |
| 661 | switch (buf->vb.field) { |
| 662 | case V4L2_FIELD_TOP: |
| 663 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, |
| 664 | buf->vb.height,0,buf->tvnorm); |
| 665 | bttv_risc_planar(btv, &buf->top, buf->vb.dma.sglist, |
| 666 | 0,buf->vb.width,0,buf->vb.height, |
| 667 | uoffset,voffset,buf->fmt->hshift, |
| 668 | buf->fmt->vshift,0); |
| 669 | break; |
| 670 | case V4L2_FIELD_BOTTOM: |
| 671 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, |
| 672 | buf->vb.height,0,buf->tvnorm); |
| 673 | bttv_risc_planar(btv, &buf->bottom, buf->vb.dma.sglist, |
| 674 | 0,buf->vb.width,0,buf->vb.height, |
| 675 | uoffset,voffset,buf->fmt->hshift, |
| 676 | buf->fmt->vshift,0); |
| 677 | break; |
| 678 | case V4L2_FIELD_INTERLACED: |
| 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,ypadding,lines, |
| 687 | uoffset,voffset, |
| 688 | buf->fmt->hshift, |
| 689 | buf->fmt->vshift, |
| 690 | cpadding); |
| 691 | bttv_risc_planar(btv,&buf->bottom, |
| 692 | buf->vb.dma.sglist, |
| 693 | ypadding,buf->vb.width,ypadding,lines, |
| 694 | uoffset+cpadding, |
| 695 | voffset+cpadding, |
| 696 | buf->fmt->hshift, |
| 697 | buf->fmt->vshift, |
| 698 | cpadding); |
| 699 | break; |
| 700 | case V4L2_FIELD_SEQ_TB: |
| 701 | bttv_calc_geo(btv,&buf->geo,buf->vb.width, |
| 702 | buf->vb.height,1,buf->tvnorm); |
| 703 | lines = buf->vb.height >> 1; |
| 704 | ypadding = buf->vb.width; |
| 705 | cpadding = buf->vb.width >> buf->fmt->hshift; |
| 706 | bttv_risc_planar(btv,&buf->top, |
| 707 | buf->vb.dma.sglist, |
| 708 | 0,buf->vb.width,0,lines, |
| 709 | uoffset >> 1, |
| 710 | voffset >> 1, |
| 711 | buf->fmt->hshift, |
| 712 | buf->fmt->vshift, |
| 713 | 0); |
| 714 | bttv_risc_planar(btv,&buf->bottom, |
| 715 | buf->vb.dma.sglist, |
| 716 | lines * ypadding,buf->vb.width,0,lines, |
| 717 | lines * ypadding + (uoffset >> 1), |
| 718 | lines * ypadding + (voffset >> 1), |
| 719 | buf->fmt->hshift, |
| 720 | buf->fmt->vshift, |
| 721 | 0); |
| 722 | break; |
| 723 | default: |
| 724 | BUG(); |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | /* raw data */ |
| 729 | if (buf->fmt->flags & FORMAT_FLAGS_RAW) { |
| 730 | /* build risc code */ |
| 731 | buf->vb.field = V4L2_FIELD_SEQ_TB; |
| 732 | bttv_calc_geo(btv,&buf->geo,tvnorm->swidth,tvnorm->sheight, |
| 733 | 1,buf->tvnorm); |
| 734 | bttv_risc_packed(btv, &buf->top, buf->vb.dma.sglist, |
| 735 | 0, RAW_BPL, 0, RAW_LINES); |
| 736 | bttv_risc_packed(btv, &buf->bottom, buf->vb.dma.sglist, |
| 737 | buf->vb.size/2 , RAW_BPL, 0, RAW_LINES); |
| 738 | } |
| 739 | |
| 740 | /* copy format info */ |
| 741 | buf->btformat = buf->fmt->btformat; |
| 742 | buf->btswap = buf->fmt->btswap; |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | /* ---------------------------------------------------------- */ |
| 747 | |
| 748 | /* calculate geometry, build risc code */ |
| 749 | int |
| 750 | bttv_overlay_risc(struct bttv *btv, |
| 751 | struct bttv_overlay *ov, |
| 752 | const struct bttv_format *fmt, |
| 753 | struct bttv_buffer *buf) |
| 754 | { |
| 755 | /* check interleave, bottom+top fields */ |
| 756 | dprintk(KERN_DEBUG |
| 757 | "bttv%d: overlay fields: %s format: %s size: %dx%d\n", |
| 758 | btv->c.nr, v4l2_field_names[buf->vb.field], |
| 759 | fmt->name,ov->w.width,ov->w.height); |
| 760 | |
| 761 | /* calculate geometry */ |
| 762 | bttv_calc_geo(btv,&buf->geo,ov->w.width,ov->w.height, |
| 763 | V4L2_FIELD_HAS_BOTH(ov->field), ov->tvnorm); |
| 764 | |
| 765 | /* build risc code */ |
| 766 | switch (ov->field) { |
| 767 | case V4L2_FIELD_TOP: |
| 768 | bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 0); |
| 769 | break; |
| 770 | case V4L2_FIELD_BOTTOM: |
| 771 | bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 0); |
| 772 | break; |
| 773 | case V4L2_FIELD_INTERLACED: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 1); |
| 775 | bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 1, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | break; |
| 777 | default: |
| 778 | BUG(); |
| 779 | } |
| 780 | |
| 781 | /* copy format info */ |
| 782 | buf->btformat = fmt->btformat; |
| 783 | buf->btswap = fmt->btswap; |
| 784 | buf->vb.field = ov->field; |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | /* |
| 789 | * Local variables: |
| 790 | * c-basic-offset: 8 |
| 791 | * End: |
| 792 | */ |