| Start/ | End/ | |||
| True | False | - | Line | Source |
| 1 | /* | |||
| 2 | * Generic fillrect for frame buffers with packed pixels of any depth. | |||
| 3 | * | |||
| 4 | * Copyright (C) 2000 James Simmons (jsimmons@linux-fbdev.org) | |||
| 5 | * | |||
| 6 | * This file is subject to the terms and conditions of the GNU General Public | |||
| 7 | * License. See the file COPYING in the main directory of this archive for | |||
| 8 | * more details. | |||
| 9 | * | |||
| 10 | * NOTES: | |||
| 11 | * | |||
| 12 | * The code for depths like 24 that don't have integer number of pixels per | |||
| 13 | * long is broken and needs to be fixed. For now I turned these types of | |||
| 14 | * mode off. | |||
| 15 | * | |||
| 16 | * Also need to add code to deal with cards endians that are different than | |||
| 17 | * the native cpu endians. I also need to deal with MSB position in the word. | |||
| 18 | * | |||
| 19 | */ | |||
| 20 | #include <linux/config.h> | |||
| 21 | #include <linux/module.h> | |||
| 22 | #include <linux/string.h> | |||
| 23 | #include <linux/fb.h> | |||
| 24 | #include <asm/types.h> | |||
| 25 | ||||
| 26 | #if BITS_PER_LONG == 32 | |||
| 27 | # define FB_WRITEL fb_writel | |||
| 28 | # define FB_READL fb_readl | |||
| 29 | #else | |||
| 30 | # define FB_WRITEL fb_writeq | |||
| 31 | # define FB_READL fb_readq | |||
| 32 | #endif | |||
| 33 | ||||
| 34 | /* | |||
| 35 | * Compose two values, using a bitmask as decision value | |||
| 36 | * This is equivalent to (a & mask) | (b & ~mask) | |||
| 37 | */ | |||
| 38 | ||||
| 39 | static inline unsigned long | |||
| 0 | 0 | - | 40 | comp(unsigned long a, unsigned long b, unsigned long mask) |
| 41 | { | |||
| 0 | - | 42 | return ((a ^ b) & mask) ^ b; | |
| 43 | } | |||
| 44 | ||||
| 45 | /* | |||
| 46 | * Create a pattern with the given pixel's color | |||
| 47 | */ | |||
| 48 | ||||
| 49 | #if BITS_PER_LONG == 64 | |||
| 50 | static inline unsigned long | |||
| 0 | 0 | - | 51 | pixel_to_pat( u32 bpp, u32 pixel) |
| 52 | { | |||
| 53 | switch (bpp) { | |||
| 0 | - | 54 | case 1: | |
| 0 | - | 55 | return 0xfffffffffffffffful*pixel; | |
| 0 | - | 56 | case 2: | |
| 0 | - | 57 | return 0x5555555555555555ul*pixel; | |
| 0 | - | 58 | case 4: | |
| 0 | - | 59 | return 0x1111111111111111ul*pixel; | |
| 0 | - | 60 | case 8: | |
| 0 | - | 61 | return 0x0101010101010101ul*pixel; | |
| 0 | - | 62 | case 12: | |
| 0 | - | 63 | return 0x0001001001001001ul*pixel; | |
| 0 | - | 64 | case 16: | |
| 0 | - | 65 | return 0x0001000100010001ul*pixel; | |
| 0 | - | 66 | case 24: | |
| 0 | - | 67 | return 0x0000000001000001ul*pixel; | |
| 0 | - | 68 | case 32: | |
| 0 | - | 69 | return 0x0000000100000001ul*pixel; | |
| 0 | - | 70 | default: | |
| 71 | panic("pixel_to_pat(): unsupported pixelformat\n"); | |||
| 72 | } | |||
| 73 | } | |||
| 74 | #else | |||
| 75 | static inline unsigned long | |||
| 76 | pixel_to_pat( u32 bpp, u32 pixel) | |||
| 77 | { | |||
| 78 | switch (bpp) { | |||
| 79 | case 1: | |||
| 80 | return 0xfffffffful*pixel; | |||
| 81 | case 2: | |||
| 82 | return 0x55555555ul*pixel; | |||
| 83 | case 4: | |||
| 84 | return 0x11111111ul*pixel; | |||
| 85 | case 8: | |||
| 86 | return 0x01010101ul*pixel; | |||
| 87 | case 12: | |||
| 88 | return 0x00001001ul*pixel; | |||
| 89 | case 16: | |||
| 90 | return 0x00010001ul*pixel; | |||
| 91 | case 24: | |||
| 92 | return 0x00000001ul*pixel; | |||
| 93 | case 32: | |||
| 94 | return 0x00000001ul*pixel; | |||
| 95 | default: | |||
| 96 | panic("pixel_to_pat(): unsupported pixelformat\n"); | |||
| 97 | } | |||
| 98 | } | |||
| 99 | #endif | |||
| 100 | ||||
| 101 | /* | |||
| 102 | * Aligned pattern fill using 32/64-bit memory accesses | |||
| 103 | */ | |||
| 104 | ||||
| 105 | static void | |||
| 0 | 0 | - | 106 | bitfill_aligned(unsigned long __iomem *dst, int dst_idx, unsigned long pat, unsigned n, int bits) |
| 107 | { | |||
| 108 | unsigned long first, last; | |||
| 109 | ||||
| 0 | 0 | - | 110 | if (!n) |
| 0 | - | 111 | return; | |
| 112 | ||||
| 113 | first = FB_SHIFT_HIGH(~0UL, dst_idx); | |||
| 114 | last = ~(FB_SHIFT_HIGH(~0UL, (dst_idx+n) % bits)); | |||
| 115 | ||||
| 0 | 0 | - | 116 | if (dst_idx+n <= bits) { |
| 117 | // Single word | |||
| 0 | 0 | - | 118 | if (last) |
| 119 | first &= last; | |||
| 120 | FB_WRITEL(comp(pat, FB_READL(dst), first), dst); | |||
| 121 | } else { | |||
| 122 | // Multiple destination words | |||
| 123 | ||||
| 124 | // Leading bits | |||
| 0 | 0 | - | 125 | if (first!= ~0UL) { |
| 126 | FB_WRITEL(comp(pat, FB_READL(dst), first), dst); | |||
| 127 | dst++; | |||
| 128 | n -= bits - dst_idx; | |||
| 129 | } | |||
| 130 | ||||
| 131 | // Main chunk | |||
| 132 | n /= bits; | |||
| 0 | 0 | - | 133 | while (n >= 8) { |
| 134 | FB_WRITEL(pat, dst++); | |||
| 135 | FB_WRITEL(pat, dst++); | |||
| 136 | FB_WRITEL(pat, dst++); | |||
| 137 | FB_WRITEL(pat, dst++); | |||
| 138 | FB_WRITEL(pat, dst++); | |||
| 139 | FB_WRITEL(pat, dst++); | |||
| 140 | FB_WRITEL(pat, dst++); | |||
| 141 | FB_WRITEL(pat, dst++); | |||
| 142 | n -= 8; | |||
| 143 | } | |||
| 0 | 0 | - | 144 | while (n--) |
| 145 | FB_WRITEL(pat, dst++); | |||
| 146 | ||||
| 147 | // Trailing bits | |||
| 0 | 0 | - | 148 | if (last) |
| 149 | FB_WRITEL(comp(pat, FB_READL(dst), last), dst); | |||
| 150 | } | |||
| 151 | } | |||
| 152 | ||||
| 153 | ||||
| 154 | /* | |||
| 155 | * Unaligned generic pattern fill using 32/64-bit memory accesses | |||
| 156 | * The pattern must have been expanded to a full 32/64-bit value | |||
| 157 | * Left/right are the appropriate shifts to convert to the pattern to be | |||
| 158 | * used for the next 32/64-bit word | |||
| 159 | */ | |||
| 160 | ||||
| 161 | static void | |||
| 0 | 0 | - | 162 | bitfill_unaligned(unsigned long __iomem *dst, int dst_idx, unsigned long pat, |
| 163 | int left, int right, unsigned n, int bits) | |||
| 164 | { | |||
| 165 | unsigned long first, last; | |||
| 166 | ||||
| 0 | 0 | - | 167 | if (!n) |
| 0 | - | 168 | return; | |
| 169 | ||||
| 170 | first = FB_SHIFT_HIGH(~0UL, dst_idx); | |||
| 171 | last = ~(FB_SHIFT_HIGH(~0UL, (dst_idx+n) % bits)); | |||
| 172 | ||||
| 0 | 0 | - | 173 | if (dst_idx+n <= bits) { |
| 174 | // Single word | |||
| 0 | 0 | - | 175 | if (last) |
| 176 | first &= last; | |||
| 177 | FB_WRITEL(comp(pat, FB_READL(dst), first), dst); | |||
| 178 | } else { | |||
| 179 | // Multiple destination words | |||
| 180 | // Leading bits | |||
| 0 | 0 | - | 181 | if (first) { |
| 182 | FB_WRITEL(comp(pat, FB_READL(dst), first), dst); | |||
| 183 | dst++; | |||
| 184 | pat = pat << left | pat >> right; | |||
| 185 | n -= bits - dst_idx; | |||
| 186 | } | |||
| 187 | ||||
| 188 | // Main chunk | |||
| 189 | n /= bits; | |||
| 0 | 0 | - | 190 | while (n >= 4) { |
| 191 | FB_WRITEL(pat, dst++); | |||
| 192 | pat = pat << left | pat >> right; | |||
| 193 | FB_WRITEL(pat, dst++); | |||
| 194 | pat = pat << left | pat >> right; | |||
| 195 | FB_WRITEL(pat, dst++); | |||
| 196 | pat = pat << left | pat >> right; | |||
| 197 | FB_WRITEL(pat, dst++); | |||
| 198 | pat = pat << left | pat >> right; | |||
| 199 | n -= 4; | |||
| 200 | } | |||
| 0 | 0 | - | 201 | while (n--) { |
| 202 | FB_WRITEL(pat, dst++); | |||
| 203 | pat = pat << left | pat >> right; | |||
| 204 | } | |||
| 205 | ||||
| 206 | // Trailing bits | |||
| 0 | 0 | - | 207 | if (last) |
| 208 | FB_WRITEL(comp(pat, FB_READL(dst), first), dst); | |||
| 209 | } | |||
| 210 | } | |||
| 211 | ||||
| 212 | /* | |||
| 213 | * Aligned pattern invert using 32/64-bit memory accesses | |||
| 214 | */ | |||
| 215 | static void | |||
| 0 | 0 | - | 216 | bitfill_aligned_rev(unsigned long __iomem *dst, int dst_idx, unsigned long pat, unsigned n, int bits) |
| 217 | { | |||
| 218 | unsigned long val = pat, dat; | |||
| 219 | unsigned long first, last; | |||
| 220 | ||||
| 0 | 0 | - | 221 | if (!n) |
| 0 | - | 222 | return; | |
| 223 | ||||
| 224 | first = FB_SHIFT_HIGH(~0UL, dst_idx); | |||
| 225 | last = ~(FB_SHIFT_HIGH(~0UL, (dst_idx+n) % bits)); | |||
| 226 | ||||
| 0 | 0 | - | 227 | if (dst_idx+n <= bits) { |
| 228 | // Single word | |||
| 0 | 0 | - | 229 | if (last) |
| 230 | first &= last; | |||
| 231 | dat = FB_READL(dst); | |||
| 232 | FB_WRITEL(comp(dat ^ val, dat, first), dst); | |||
| 233 | } else { | |||
| 234 | // Multiple destination words | |||
| 235 | // Leading bits | |||
| 0 | 0 | - | 236 | if (first!=0UL) { |
| 237 | dat = FB_READL(dst); | |||
| 238 | FB_WRITEL(comp(dat ^ val, dat, first), dst); | |||
| 239 | dst++; | |||
| 240 | n -= bits - dst_idx; | |||
| 241 | } | |||
| 242 | ||||
| 243 | // Main chunk | |||
| 244 | n /= bits; | |||
| 0 | 0 | - | 245 | while (n >= 8) { |
| 246 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 247 | dst++; | |||
| 248 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 249 | dst++; | |||
| 250 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 251 | dst++; | |||
| 252 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 253 | dst++; | |||
| 254 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 255 | dst++; | |||
| 256 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 257 | dst++; | |||
| 258 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 259 | dst++; | |||
| 260 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 261 | dst++; | |||
| 262 | n -= 8; | |||
| 263 | } | |||
| 0 | 0 | - | 264 | while (n--) { |
| 265 | FB_WRITEL(FB_READL(dst) ^ val, dst); | |||
| 266 | dst++; | |||
| 267 | } | |||
| 268 | // Trailing bits | |||
| 0 | 0 | - | 269 | if (last) { |
| 270 | dat = FB_READL(dst); | |||
| 271 | FB_WRITEL(comp(dat ^ val, dat, last), dst); | |||
| 272 | } | |||
| 273 | } | |||
| 274 | } | |||
| 275 | ||||
| 276 | ||||
| 277 | /* | |||
| 278 | * Unaligned generic pattern invert using 32/64-bit memory accesses | |||
| 279 | * The pattern must have been expanded to a full 32/64-bit value | |||
| 280 | * Left/right are the appropriate shifts to convert to the pattern to be | |||
| 281 | * used for the next 32/64-bit word | |||
| 282 | */ | |||
| 283 | ||||
| 284 | static void | |||
| 0 | 0 | - | 285 | bitfill_unaligned_rev(unsigned long __iomem *dst, int dst_idx, unsigned long pat, |
| 286 | int left, int right, unsigned n, int bits) | |||
| 287 | { | |||
| 288 | unsigned long first, last, dat; | |||
| 289 | ||||
| 0 | 0 | - | 290 | if (!n) |
| 0 | - | 291 | return; | |
| 292 | ||||
| 293 | first = FB_SHIFT_HIGH(~0UL, dst_idx); | |||
| 294 | last = ~(FB_SHIFT_HIGH(~0UL, (dst_idx+n) % bits)); | |||
| 295 | ||||
| 0 | 0 | - | 296 | if (dst_idx+n <= bits) { |
| 297 | // Single word | |||
| 0 | 0 | - | 298 | if (last) |
| 299 | first &= last; | |||
| 300 | dat = FB_READL(dst); | |||
| 301 | FB_WRITEL(comp(dat ^ pat, dat, first), dst); | |||
| 302 | } else { | |||
| 303 | // Multiple destination words | |||
| 304 | ||||
| 305 | // Leading bits | |||
| 0 | 0 | - | 306 | if (first != 0UL) { |
| 307 | dat = FB_READL(dst); | |||
| 308 | FB_WRITEL(comp(dat ^ pat, dat, first), dst); | |||
| 309 | dst++; | |||
| 310 | pat = pat << left | pat >> right; | |||
| 311 | n -= bits - dst_idx; | |||
| 312 | } | |||
| 313 | ||||
| 314 | // Main chunk | |||
| 315 | n /= bits; | |||
| 0 | 0 | - | 316 | while (n >= 4) { |
| 317 | FB_WRITEL(FB_READL(dst) ^ pat, dst); | |||
| 318 | dst++; | |||
| 319 | pat = pat << left | pat >> right; | |||
| 320 | FB_WRITEL(FB_READL(dst) ^ pat, dst); | |||
| 321 | dst++; | |||
| 322 | pat = pat << left | pat >> right; | |||
| 323 | FB_WRITEL(FB_READL(dst) ^ pat, dst); | |||
| 324 | dst++; | |||
| 325 | pat = pat << left | pat >> right; | |||
| 326 | FB_WRITEL(FB_READL(dst) ^ pat, dst); | |||
| 327 | dst++; | |||
| 328 | pat = pat << left | pat >> right; | |||
| 329 | n -= 4; | |||
| 330 | } | |||
| 0 | 0 | - | 331 | while (n--) { |
| 332 | FB_WRITEL(FB_READL(dst) ^ pat, dst); | |||
| 333 | dst++; | |||
| 334 | pat = pat << left | pat >> right; | |||
| 335 | } | |||
| 336 | ||||
| 337 | // Trailing bits | |||
| 0 | 0 | - | 338 | if (last) { |
| 339 | dat = FB_READL(dst); | |||
| 340 | FB_WRITEL(comp(dat ^ pat, dat, last), dst); | |||
| 341 | } | |||
| 342 | } | |||
| 343 | } | |||
| 344 | ||||
| 0 | 0 | - | 345 | void cfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect) |
| 346 | { | |||
| 347 | unsigned long pat, fg; | |||
| 348 | unsigned long width = rect->width, height = rect->height; | |||
| 349 | int bits = BITS_PER_LONG, bytes = bits >> 3; | |||
| 350 | u32 bpp = p->var.bits_per_pixel; | |||
| 351 | unsigned long __iomem *dst; | |||
| 352 | int dst_idx, left; | |||
| 353 | ||||
| 0 | 0 | - | 354 | if (p->state != FBINFO_STATE_RUNNING) |
| 0 | - | 355 | return; | |
| 356 | ||||
| 357 | if (p->fix.visual == FB_VISUAL_TRUECOLOR || | |||
| 0 | 0 | - | 358 | p->fix.visual == FB_VISUAL_DIRECTCOLOR ) |
| 0 | - | 358 | T || _ | |
| 0 | - | 358 | F || T | |
| 0 | - | 358 | F || F | |
| 359 | fg = ((u32 *) (p->pseudo_palette))[rect->color]; | |||
| 360 | else | |||
| 361 | fg = rect->color; | |||
| 362 | ||||
| 363 | pat = pixel_to_pat( bpp, fg); | |||
| 364 | ||||
| 365 | dst = (unsigned long __iomem *)((unsigned long)p->screen_base & ~(bytes-1)); | |||
| 366 | dst_idx = ((unsigned long)p->screen_base & (bytes - 1))*8; | |||
| 367 | dst_idx += rect->dy*p->fix.line_length*8+rect->dx*bpp; | |||
| 368 | /* FIXME For now we support 1-32 bpp only */ | |||
| 369 | left = bits % bpp; | |||
| 0 | 0 | - | 370 | if (p->fbops->fb_sync) |
| 371 | p->fbops->fb_sync(p); | |||
| 0 | 0 | - | 372 | if (!left) { |
| 373 | void (*fill_op32)(unsigned long __iomem *dst, int dst_idx, | |||
| 374 | unsigned long pat, unsigned n, int bits) = NULL; | |||
| 375 | ||||
| 376 | switch (rect->rop) { | |||
| 0 | - | 377 | case ROP_XOR: | |
| 378 | fill_op32 = bitfill_aligned_rev; | |||
| 0 | - | 379 | break; | |
| 0 | - | 380 | case ROP_COPY: | |
| 381 | fill_op32 = bitfill_aligned; | |||
| 0 | - | 382 | break; | |
| 0 | - | 383 | default: | |
| 384 | printk( KERN_ERR "cfb_fillrect(): unknown rop, defaulting to ROP_COPY\n"); | |||
| 385 | fill_op32 = bitfill_aligned; | |||
| 0 | - | 386 | break; | |
| 387 | } | |||
| 0 | 0 | - | 388 | while (height--) { |
| 389 | dst += dst_idx >> (ffs(bits) - 1); | |||
| 390 | dst_idx &= (bits - 1); | |||
| 391 | fill_op32(dst, dst_idx, pat, width*bpp, bits); | |||
| 392 | dst_idx += p->fix.line_length*8; | |||
| 393 | } | |||
| 394 | } else { | |||
| 395 | int right; | |||
| 396 | int r; | |||
| 397 | int rot = (left-dst_idx) % bpp; | |||
| 398 | void (*fill_op)(unsigned long __iomem *dst, int dst_idx, | |||
| 399 | unsigned long pat, int left, int right, | |||
| 400 | unsigned n, int bits) = NULL; | |||
| 401 | ||||
| 402 | /* rotate pattern to correct start position */ | |||
| 403 | pat = pat << rot | pat >> (bpp-rot); | |||
| 404 | ||||
| 405 | right = bpp-left; | |||
| 406 | switch (rect->rop) { | |||
| 0 | - | 407 | case ROP_XOR: | |
| 408 | fill_op = bitfill_unaligned_rev; | |||
| 0 | - | 409 | break; | |
| 0 | - | 410 | case ROP_COPY: | |
| 411 | fill_op = bitfill_unaligned; | |||
| 0 | - | 412 | break; | |
| 0 | - | 413 | default: | |
| 414 | printk( KERN_ERR "cfb_fillrect(): unknown rop, defaulting to ROP_COPY\n"); | |||
| 415 | fill_op = bitfill_unaligned; | |||
| 0 | - | 416 | break; | |
| 417 | } | |||
| 0 | 0 | - | 418 | while (height--) { |
| 419 | dst += dst_idx >> (ffs(bits) - 1); | |||
| 420 | dst_idx &= (bits - 1); | |||
| 421 | fill_op(dst, dst_idx, pat, left, right, | |||
| 422 | width*bpp, bits); | |||
| 423 | r = (p->fix.line_length*8) % bpp; | |||
| 424 | pat = pat << (bpp-r) | pat >> r; | |||
| 425 | dst_idx += p->fix.line_length*8; | |||
| 426 | } | |||
| 427 | } | |||
| 428 | } | |||
| 429 | ||||
| 430 | EXPORT_SYMBOL(cfb_fillrect); | |||
| 431 | ||||
| 432 | MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>"); | |||
| 433 | MODULE_DESCRIPTION("Generic software accelerated fill rectangle"); | |||
| 434 | MODULE_LICENSE("GPL"); | |||
| ***TER 0% (0/113) of SOURCE FILE cfbfillrect.c | ||||