Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 | /*-*- linux-c -*- * linux/drivers/video/i810_accel.c -- Hardware Acceleration * * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net> * All Rights Reserved * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. */ #include <linux/kernel.h> #include <linux/string.h> #include <linux/fb.h> #include "i810_regs.h" #include "i810.h" static u32 i810fb_rop[] = { COLOR_COPY_ROP, /* ROP_COPY */ XOR_ROP /* ROP_XOR */ }; /* Macros */ #define PUT_RING(n) { \ i810_writel(par->cur_tail, par->iring.virtual, n); \ par->cur_tail += 4; \ par->cur_tail &= RING_SIZE_MASK; \ } extern void flush_cache(void); /************************************************************/ /* BLT Engine Routines */ static inline void i810_report_error(u8 __iomem *mmio) { printk("IIR : 0x%04x\n" "EIR : 0x%04x\n" "PGTBL_ER: 0x%04x\n" "IPEIR : 0x%04x\n" "IPEHR : 0x%04x\n", i810_readw(IIR, mmio), i810_readb(EIR, mmio), i810_readl(PGTBL_ER, mmio), i810_readl(IPEIR, mmio), i810_readl(IPEHR, mmio)); } /** * wait_for_space - check ring buffer free space * @space: amount of ringbuffer space needed in bytes * @par: pointer to i810fb_par structure * * DESCRIPTION: * The function waits until a free space from the ringbuffer * is available */ static inline int wait_for_space(struct fb_info *info, u32 space) { struct i810fb_par *par = (struct i810fb_par *) info->par; u32 head, count = WAIT_COUNT, tail; u8 __iomem *mmio = par->mmio_start_virtual; tail = par->cur_tail; while (count--) { head = i810_readl(IRING + 4, mmio) & RBUFFER_HEAD_MASK; if ((tail == head) || (tail > head && (par->iring.size - tail + head) >= space) || (tail < head && (head - tail) >= space)) { return 0; } } printk("ringbuffer lockup!!!\n"); i810_report_error(mmio); par->dev_flags |= LOCKUP; info->pixmap.scan_align = 1; return 1; } /** * wait_for_engine_idle - waits for all hardware engines to finish * @par: pointer to i810fb_par structure * * DESCRIPTION: * This waits for lring(0), iring(1), and batch(3), etc to finish and * waits until ringbuffer is empty. */ static inline int wait_for_engine_idle(struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; u8 __iomem *mmio = par->mmio_start_virtual; int count = WAIT_COUNT; if (wait_for_space(info, par->iring.size)) /* flush */ return 1; while((i810_readw(INSTDONE, mmio) & 0x7B) != 0x7B && --count); if (count) return 0; printk("accel engine lockup!!!\n"); printk("INSTDONE: 0x%04x\n", i810_readl(INSTDONE, mmio)); i810_report_error(mmio); par->dev_flags |= LOCKUP; info->pixmap.scan_align = 1; return 1; } /* begin_iring - prepares the ringbuffer * @space: length of sequence in dwords * @par: pointer to i810fb_par structure * * DESCRIPTION: * Checks/waits for sufficent space in ringbuffer of size * space. Returns the tail of the buffer */ static inline u32 begin_iring(struct fb_info *info, u32 space) { struct i810fb_par *par = (struct i810fb_par *) info->par; if (par->dev_flags & ALWAYS_SYNC) wait_for_engine_idle(info); return wait_for_space(info, space); } /** * end_iring - advances the buffer * @par: pointer to i810fb_par structure * * DESCRIPTION: * This advances the tail of the ringbuffer, effectively * beginning the execution of the graphics instruction sequence. */ static inline void end_iring(struct i810fb_par *par) { u8 __iomem *mmio = par->mmio_start_virtual; i810_writel(IRING, mmio, par->cur_tail); } /** * source_copy_blit - BLIT transfer operation * @dwidth: width of rectangular graphics data * @dheight: height of rectangular graphics data * @dpitch: bytes per line of destination buffer * @xdir: direction of copy (left to right or right to left) * @src: address of first pixel to read from * @dest: address of first pixel to write to * @from: source address * @where: destination address * @rop: raster operation * @blit_bpp: pixel format which can be different from the * framebuffer's pixelformat * @par: pointer to i810fb_par structure * * DESCRIPTION: * This is a BLIT operation typically used when doing * a 'Copy and Paste' */ static inline void source_copy_blit(int dwidth, int dheight, int dpitch, int xdir, int src, int dest, int rop, int blit_bpp, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; if (begin_iring(info, 24 + IRING_PAD)) return; PUT_RING(BLIT | SOURCE_COPY_BLIT | 4); PUT_RING(xdir | rop << 16 | dpitch | DYN_COLOR_EN | blit_bpp); PUT_RING(dheight << 16 | dwidth); PUT_RING(dest); PUT_RING(dpitch); PUT_RING(src); end_iring(par); } /** * color_blit - solid color BLIT operation * @width: width of destination * @height: height of destination * @pitch: pixels per line of the buffer * @dest: address of first pixel to write to * @where: destination * @rop: raster operation * @what: color to transfer * @blit_bpp: pixel format which can be different from the * framebuffer's pixelformat * @par: pointer to i810fb_par structure * * DESCRIPTION: * A BLIT operation which can be used for color fill/rectangular fill */ static inline void color_blit(int width, int height, int pitch, int dest, int rop, int what, int blit_bpp, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; if (begin_iring(info, 24 + IRING_PAD)) return; PUT_RING(BLIT | COLOR_BLT | 3); PUT_RING(rop << 16 | pitch | SOLIDPATTERN | DYN_COLOR_EN | blit_bpp); PUT_RING(height << 16 | width); PUT_RING(dest); PUT_RING(what); PUT_RING(NOP); end_iring(par); } /** * mono_src_copy_imm_blit - color expand from system memory to framebuffer * @dwidth: width of destination * @dheight: height of destination * @dpitch: pixels per line of the buffer * @dsize: size of bitmap in double words * @dest: address of first byte of pixel; * @rop: raster operation * @blit_bpp: pixelformat to use which can be different from the * framebuffer's pixelformat * @src: address of image data * @bg: backgound color * @fg: forground color * @par: pointer to i810fb_par structure * * DESCRIPTION: * A color expand operation where the source data is placed in the * ringbuffer itself. Useful for drawing text. * * REQUIREMENT: * The end of a scanline must be padded to the next word. */ static inline void mono_src_copy_imm_blit(int dwidth, int dheight, int dpitch, int dsize, int blit_bpp, int rop, int dest, const u32 *src, int bg, int fg, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; if (begin_iring(info, 24 + (dsize << 2) + IRING_PAD)) return; PUT_RING(BLIT | MONO_SOURCE_COPY_IMMEDIATE | (4 + dsize)); PUT_RING(DYN_COLOR_EN | blit_bpp | rop << 16 | dpitch); PUT_RING(dheight << 16 | dwidth); PUT_RING(dest); PUT_RING(bg); PUT_RING(fg); while (dsize--) PUT_RING(*src++); end_iring(par); } static inline void load_front(int offset, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; if (begin_iring(info, 8 + IRING_PAD)) return; PUT_RING(PARSER | FLUSH); PUT_RING(NOP); end_iring(par); if (begin_iring(info, 8 + IRING_PAD)) return; PUT_RING(PARSER | FRONT_BUFFER | ((par->pitch >> 3) << 8)); PUT_RING((par->fb.offset << 12) + offset); end_iring(par); } /** * i810fb_iring_enable - enables/disables the ringbuffer * @mode: enable or disable * @par: pointer to i810fb_par structure * * DESCRIPTION: * Enables or disables the ringbuffer, effectively enabling or * disabling the instruction/acceleration engine. */ static inline void i810fb_iring_enable(struct i810fb_par *par, u32 mode) { u32 tmp; u8 __iomem *mmio = par->mmio_start_virtual; tmp = i810_readl(IRING + 12, mmio); if (mode == OFF) tmp &= ~1; else tmp |= 1; flush_cache(); i810_writel(IRING + 12, mmio, tmp); } void i810fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { struct i810fb_par *par = (struct i810fb_par *) info->par; u32 dx, dy, width, height, dest, rop = 0, color = 0; if (!info->var.accel_flags || par->dev_flags & LOCKUP || par->depth == 4) return cfb_fillrect(info, rect); if (par->depth == 1) color = rect->color; else color = ((u32 *) (info->pseudo_palette))[rect->color]; rop = i810fb_rop[rect->rop]; dx = rect->dx * par->depth; width = rect->width * par->depth; dy = rect->dy; height = rect->height; dest = info->fix.smem_start + (dy * info->fix.line_length) + dx; color_blit(width, height, info->fix.line_length, dest, rop, color, par->blit_bpp, info); } void i810fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) { struct i810fb_par *par = (struct i810fb_par *) info->par; u32 sx, sy, dx, dy, pitch, width, height, src, dest, xdir; if (!info->var.accel_flags || par->dev_flags & LOCKUP || par->depth == 4) return cfb_copyarea(info, region); dx = region->dx * par->depth; sx = region->sx * par->depth; width = region->width * par->depth; sy = region->sy; dy = region->dy; height = region->height; if (dx <= sx) { xdir = INCREMENT; } else { xdir = DECREMENT; sx += width - 1; dx += width - 1; } if (dy <= sy) { pitch = info->fix.line_length; } else { pitch = (-(info->fix.line_length)) & 0xFFFF; sy += height - 1; dy += height - 1; } src = info->fix.smem_start + (sy * info->fix.line_length) + sx; dest = info->fix.smem_start + (dy * info->fix.line_length) + dx; source_copy_blit(width, height, pitch, xdir, src, dest, PAT_COPY_ROP, par->blit_bpp, info); } void i810fb_imageblit(struct fb_info *info, const struct fb_image *image) { struct i810fb_par *par = (struct i810fb_par *) info->par; u32 fg = 0, bg = 0, size, dst; if (!info->var.accel_flags || par->dev_flags & LOCKUP || par->depth == 4 || image->depth != 1) return cfb_imageblit(info, image); switch (info->var.bits_per_pixel) { case 8: fg = image->fg_color; bg = image->bg_color; break; case 16: case 24: fg = ((u32 *)(info->pseudo_palette))[image->fg_color]; bg = ((u32 *)(info->pseudo_palette))[image->bg_color]; break; } dst = info->fix.smem_start + (image->dy * info->fix.line_length) + (image->dx * par->depth); size = (image->width+7)/8 + 1; size &= ~1; size *= image->height; size += 7; size &= ~7; mono_src_copy_imm_blit(image->width * par->depth, image->height, info->fix.line_length, size/4, par->blit_bpp, PAT_COPY_ROP, dst, (u32 *) image->data, bg, fg, info); } int i810fb_sync(struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; if (!info->var.accel_flags || par->dev_flags & LOCKUP) return 0; return wait_for_engine_idle(info); } void i810fb_load_front(u32 offset, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; u8 __iomem *mmio = par->mmio_start_virtual; if (!info->var.accel_flags || par->dev_flags & LOCKUP) i810_writel(DPLYBASE, mmio, par->fb.physical + offset); else load_front(offset, info); } /** * i810fb_init_ringbuffer - initialize the ringbuffer * @par: pointer to i810fb_par structure * * DESCRIPTION: * Initializes the ringbuffer by telling the device the * size and location of the ringbuffer. It also sets * the head and tail pointers = 0 */ void i810fb_init_ringbuffer(struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; u32 tmp1, tmp2; u8 __iomem *mmio = par->mmio_start_virtual; wait_for_engine_idle(info); i810fb_iring_enable(par, OFF); i810_writel(IRING, mmio, 0); i810_writel(IRING + 4, mmio, 0); par->cur_tail = 0; tmp2 = i810_readl(IRING + 8, mmio) & ~RBUFFER_START_MASK; tmp1 = par->iring.physical; i810_writel(IRING + 8, mmio, tmp2 | tmp1); tmp1 = i810_readl(IRING + 12, mmio); tmp1 &= ~RBUFFER_SIZE_MASK; tmp2 = (par->iring.size - I810_PAGESIZE) & RBUFFER_SIZE_MASK; i810_writel(IRING + 12, mmio, tmp1 | tmp2); i810fb_iring_enable(par, ON); } |