| 1 | /* |
| 2 | * QEMU Motorola 680x0 Macintosh Video Card Emulation |
| 3 | * Copyright (c) 2012-2018 Laurent Vivier |
| 4 | * |
| 5 | * some parts from QEMU G364 framebuffer Emulator. |
| 6 | * Copyright (c) 2007-2011 Herve Poussineau |
| 7 | * |
| 8 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 9 | * See the COPYING file in the top-level directory. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include "qemu/osdep.h" |
| 14 | #include "qemu/units.h" |
| 15 | #include "hw/core/sysbus.h" |
| 16 | #include "ui/console.h" |
| 17 | #include "ui/pixel_ops.h" |
| 18 | #include "hw/nubus/nubus.h" |
| 19 | #include "hw/display/macfb.h" |
| 20 | #include "qapi/error.h" |
| 21 | #include "hw/core/qdev-properties.h" |
| 22 | #include "migration/vmstate.h" |
| 23 | #include "trace.h" |
| 24 | |
| 25 | #define VIDEO_BASE 0x0 |
| 26 | #define DAFB_BASE 0x00800000 |
| 27 | |
| 28 | #define MACFB_PAGE_SIZE 4096 |
| 29 | #define MACFB_VRAM_SIZE (4 * MiB) |
| 30 | |
| 31 | #define DAFB_MODE_VADDR1 0x0 |
| 32 | #define DAFB_MODE_VADDR2 0x4 |
| 33 | #define DAFB_MODE_CTRL1 0x8 |
| 34 | #define DAFB_MODE_CTRL2 0xc |
| 35 | #define DAFB_MODE_SENSE 0x1c |
| 36 | #define DAFB_INTR_MASK 0x104 |
| 37 | #define DAFB_INTR_STAT 0x108 |
| 38 | #define DAFB_INTR_CLEAR 0x10c |
| 39 | #define DAFB_LUT_INDEX 0x200 |
| 40 | #define DAFB_LUT 0x210 |
| 41 | |
| 42 | #define DAFB_INTR_VBL 0x4 |
| 43 | |
| 44 | /* Vertical Blank period (60.15Hz) */ |
| 45 | #define DAFB_INTR_VBL_PERIOD_NS 16625800 |
| 46 | |
| 47 | /* |
| 48 | * Quadra sense codes taken from Apple Technical Note HW26: |
| 49 | * "Macintosh Quadra Built-In Video". The sense codes and |
| 50 | * extended sense codes have different meanings: |
| 51 | * |
| 52 | * Sense: |
| 53 | * bit 2: SENSE2 (pin 10) |
| 54 | * bit 1: SENSE1 (pin 7) |
| 55 | * bit 0: SENSE0 (pin 4) |
| 56 | * |
| 57 | * 0 = pin tied to ground |
| 58 | * 1 = pin unconnected |
| 59 | * |
| 60 | * Extended Sense: |
| 61 | * bit 2: pins 4-10 |
| 62 | * bit 1: pins 10-7 |
| 63 | * bit 0: pins 7-4 |
| 64 | * |
| 65 | * 0 = pins tied together |
| 66 | * 1 = pins unconnected |
| 67 | * |
| 68 | * Reads from the sense register appear to be active low, i.e. a 1 indicates |
| 69 | * that the pin is tied to ground, a 0 indicates the pin is disconnected. |
| 70 | * |
| 71 | * Writes to the sense register appear to activate pulldowns i.e. a 1 enables |
| 72 | * a pulldown on a particular pin. |
| 73 | * |
| 74 | * The MacOS toolbox appears to use a series of reads and writes to first |
| 75 | * determine if extended sense is to be used, and then check which pins are |
| 76 | * tied together in order to determine the display type. |
| 77 | */ |
| 78 | |
| 79 | typedef struct MacFbSense { |
| 80 | uint8_t type; |
| 81 | uint8_t sense; |
| 82 | uint8_t ext_sense; |
| 83 | } MacFbSense; |
| 84 | |
| 85 | static const MacFbSense macfb_sense_table[] = { |
| 86 | { MACFB_DISPLAY_APPLE_21_COLOR, 0x0, 0 }, |
| 87 | { MACFB_DISPLAY_APPLE_PORTRAIT, 0x1, 0 }, |
| 88 | { MACFB_DISPLAY_APPLE_12_RGB, 0x2, 0 }, |
| 89 | { MACFB_DISPLAY_APPLE_2PAGE_MONO, 0x3, 0 }, |
| 90 | { MACFB_DISPLAY_NTSC_UNDERSCAN, 0x4, 0 }, |
| 91 | { MACFB_DISPLAY_NTSC_OVERSCAN, 0x4, 0 }, |
| 92 | { MACFB_DISPLAY_APPLE_12_MONO, 0x6, 0 }, |
| 93 | { MACFB_DISPLAY_APPLE_13_RGB, 0x6, 0 }, |
| 94 | { MACFB_DISPLAY_16_COLOR, 0x7, 0x3 }, |
| 95 | { MACFB_DISPLAY_PAL1_UNDERSCAN, 0x7, 0x0 }, |
| 96 | { MACFB_DISPLAY_PAL1_OVERSCAN, 0x7, 0x0 }, |
| 97 | { MACFB_DISPLAY_PAL2_UNDERSCAN, 0x7, 0x6 }, |
| 98 | { MACFB_DISPLAY_PAL2_OVERSCAN, 0x7, 0x6 }, |
| 99 | { MACFB_DISPLAY_VGA, 0x7, 0x5 }, |
| 100 | { MACFB_DISPLAY_SVGA, 0x7, 0x5 }, |
| 101 | }; |
| 102 | |
| 103 | static const MacFbMode macfb_mode_table[] = { |
| 104 | { MACFB_DISPLAY_VGA, 1, 0x100, 0x71e, 640, 480, 0x400, 0x1000 }, |
| 105 | { MACFB_DISPLAY_VGA, 2, 0x100, 0x70e, 640, 480, 0x400, 0x1000 }, |
| 106 | { MACFB_DISPLAY_VGA, 4, 0x100, 0x706, 640, 480, 0x400, 0x1000 }, |
| 107 | { MACFB_DISPLAY_VGA, 8, 0x100, 0x702, 640, 480, 0x400, 0x1000 }, |
| 108 | { MACFB_DISPLAY_VGA, 24, 0x100, 0x7ff, 640, 480, 0x1000, 0x1000 }, |
| 109 | { MACFB_DISPLAY_VGA, 1, 0xd0 , 0x70e, 800, 600, 0x340, 0xe00 }, |
| 110 | { MACFB_DISPLAY_VGA, 2, 0xd0 , 0x706, 800, 600, 0x340, 0xe00 }, |
| 111 | { MACFB_DISPLAY_VGA, 4, 0xd0 , 0x702, 800, 600, 0x340, 0xe00 }, |
| 112 | { MACFB_DISPLAY_VGA, 8, 0xd0, 0x700, 800, 600, 0x340, 0xe00 }, |
| 113 | { MACFB_DISPLAY_VGA, 24, 0x340, 0x100, 800, 600, 0xd00, 0xe00 }, |
| 114 | { MACFB_DISPLAY_APPLE_21_COLOR, 1, 0x90, 0x506, 1152, 870, 0x240, 0x80 }, |
| 115 | { MACFB_DISPLAY_APPLE_21_COLOR, 2, 0x90, 0x502, 1152, 870, 0x240, 0x80 }, |
| 116 | { MACFB_DISPLAY_APPLE_21_COLOR, 4, 0x90, 0x500, 1152, 870, 0x240, 0x80 }, |
| 117 | { MACFB_DISPLAY_APPLE_21_COLOR, 8, 0x120, 0x5ff, 1152, 870, 0x480, 0x80 }, |
| 118 | }; |
| 119 | |
| 120 | typedef void macfb_draw_line_func(MacfbState *s, uint8_t *d, uint32_t addr, |
| 121 | int width); |
| 122 | |
| 123 | static inline uint8_t macfb_read_byte(MacfbState *s, uint32_t addr) |
| 124 | { |
| 125 | return s->vram[addr & s->vram_bit_mask]; |
| 126 | } |
| 127 | |
| 128 | /* 1-bit color */ |
| 129 | static void macfb_draw_line1(MacfbState *s, uint8_t *d, uint32_t addr, |
| 130 | int width) |
| 131 | { |
| 132 | uint8_t r, g, b; |
| 133 | int x; |
| 134 | |
| 135 | for (x = 0; x < width; x++) { |
| 136 | int bit = x & 7; |
| 137 | int idx = (macfb_read_byte(s, addr) >> (7 - bit)) & 1; |
| 138 | r = s->color_palette[idx * 3]; |
| 139 | g = s->color_palette[idx * 3 + 1]; |
| 140 | b = s->color_palette[idx * 3 + 2]; |
| 141 | addr += (bit == 7); |
| 142 | |
| 143 | *(uint32_t *)d = rgb_to_pixel32(r, g, b); |
| 144 | d += 4; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | /* 2-bit color */ |
| 149 | static void macfb_draw_line2(MacfbState *s, uint8_t *d, uint32_t addr, |
| 150 | int width) |
| 151 | { |
| 152 | uint8_t r, g, b; |
| 153 | int x; |
| 154 | |
| 155 | for (x = 0; x < width; x++) { |
| 156 | int bit = (x & 3); |
| 157 | int idx = (macfb_read_byte(s, addr) >> ((3 - bit) << 1)) & 3; |
| 158 | r = s->color_palette[idx * 3]; |
| 159 | g = s->color_palette[idx * 3 + 1]; |
| 160 | b = s->color_palette[idx * 3 + 2]; |
| 161 | addr += (bit == 3); |
| 162 | |
| 163 | *(uint32_t *)d = rgb_to_pixel32(r, g, b); |
| 164 | d += 4; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /* 4-bit color */ |
| 169 | static void macfb_draw_line4(MacfbState *s, uint8_t *d, uint32_t addr, |
| 170 | int width) |
| 171 | { |
| 172 | uint8_t r, g, b; |
| 173 | int x; |
| 174 | |
| 175 | for (x = 0; x < width; x++) { |
| 176 | int bit = x & 1; |
| 177 | int idx = (macfb_read_byte(s, addr) >> ((1 - bit) << 2)) & 15; |
| 178 | r = s->color_palette[idx * 3]; |
| 179 | g = s->color_palette[idx * 3 + 1]; |
| 180 | b = s->color_palette[idx * 3 + 2]; |
| 181 | addr += (bit == 1); |
| 182 | |
| 183 | *(uint32_t *)d = rgb_to_pixel32(r, g, b); |
| 184 | d += 4; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | /* 8-bit color */ |
| 189 | static void macfb_draw_line8(MacfbState *s, uint8_t *d, uint32_t addr, |
| 190 | int width) |
| 191 | { |
| 192 | uint8_t r, g, b; |
| 193 | int x; |
| 194 | |
| 195 | for (x = 0; x < width; x++) { |
| 196 | r = s->color_palette[macfb_read_byte(s, addr) * 3]; |
| 197 | g = s->color_palette[macfb_read_byte(s, addr) * 3 + 1]; |
| 198 | b = s->color_palette[macfb_read_byte(s, addr) * 3 + 2]; |
| 199 | addr++; |
| 200 | |
| 201 | *(uint32_t *)d = rgb_to_pixel32(r, g, b); |
| 202 | d += 4; |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | /* 16-bit color */ |
| 207 | static void macfb_draw_line16(MacfbState *s, uint8_t *d, uint32_t addr, |
| 208 | int width) |
| 209 | { |
| 210 | uint8_t r, g, b; |
| 211 | int x; |
| 212 | |
| 213 | for (x = 0; x < width; x++) { |
| 214 | uint16_t pixel; |
| 215 | pixel = (macfb_read_byte(s, addr) << 8) | macfb_read_byte(s, addr + 1); |
| 216 | r = ((pixel >> 10) & 0x1f) << 3; |
| 217 | g = ((pixel >> 5) & 0x1f) << 3; |
| 218 | b = (pixel & 0x1f) << 3; |
| 219 | addr += 2; |
| 220 | |
| 221 | *(uint32_t *)d = rgb_to_pixel32(r, g, b); |
| 222 | d += 4; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | /* 24-bit color */ |
| 227 | static void macfb_draw_line24(MacfbState *s, uint8_t *d, uint32_t addr, |
| 228 | int width) |
| 229 | { |
| 230 | uint8_t r, g, b; |
| 231 | int x; |
| 232 | |
| 233 | for (x = 0; x < width; x++) { |
| 234 | r = macfb_read_byte(s, addr + 1); |
| 235 | g = macfb_read_byte(s, addr + 2); |
| 236 | b = macfb_read_byte(s, addr + 3); |
| 237 | addr += 4; |
| 238 | |
| 239 | *(uint32_t *)d = rgb_to_pixel32(r, g, b); |
| 240 | d += 4; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | |
| 245 | enum { |
| 246 | MACFB_DRAW_LINE1, |
| 247 | MACFB_DRAW_LINE2, |
| 248 | MACFB_DRAW_LINE4, |
| 249 | MACFB_DRAW_LINE8, |
| 250 | MACFB_DRAW_LINE16, |
| 251 | MACFB_DRAW_LINE24, |
| 252 | MACFB_DRAW_LINE_NB, |
| 253 | }; |
| 254 | |
| 255 | static macfb_draw_line_func * const |
| 256 | macfb_draw_line_table[MACFB_DRAW_LINE_NB] = { |
| 257 | macfb_draw_line1, |
| 258 | macfb_draw_line2, |
| 259 | macfb_draw_line4, |
| 260 | macfb_draw_line8, |
| 261 | macfb_draw_line16, |
| 262 | macfb_draw_line24, |
| 263 | }; |
| 264 | |
| 265 | static int macfb_check_dirty(MacfbState *s, DirtyBitmapSnapshot *snap, |
| 266 | ram_addr_t addr, int len) |
| 267 | { |
| 268 | return memory_region_snapshot_get_dirty(&s->mem_vram, snap, addr, len); |
| 269 | } |
| 270 | |
| 271 | static void macfb_draw_graphic(MacfbState *s) |
| 272 | { |
| 273 | DisplaySurface *surface = qemu_console_surface(s->con); |
| 274 | DirtyBitmapSnapshot *snap = NULL; |
| 275 | ram_addr_t page; |
| 276 | uint32_t v = 0; |
| 277 | int y, ymin; |
| 278 | int macfb_stride = s->mode->stride; |
| 279 | macfb_draw_line_func *macfb_draw_line; |
| 280 | |
| 281 | switch (s->depth) { |
| 282 | case 1: |
| 283 | v = MACFB_DRAW_LINE1; |
| 284 | break; |
| 285 | case 2: |
| 286 | v = MACFB_DRAW_LINE2; |
| 287 | break; |
| 288 | case 4: |
| 289 | v = MACFB_DRAW_LINE4; |
| 290 | break; |
| 291 | case 8: |
| 292 | v = MACFB_DRAW_LINE8; |
| 293 | break; |
| 294 | case 16: |
| 295 | v = MACFB_DRAW_LINE16; |
| 296 | break; |
| 297 | case 24: |
| 298 | v = MACFB_DRAW_LINE24; |
| 299 | break; |
| 300 | } |
| 301 | |
| 302 | macfb_draw_line = macfb_draw_line_table[v]; |
| 303 | assert(macfb_draw_line != NULL); |
| 304 | |
| 305 | snap = memory_region_snapshot_and_clear_dirty(&s->mem_vram, 0x0, |
| 306 | memory_region_size(&s->mem_vram), |
| 307 | DIRTY_MEMORY_VGA); |
| 308 | |
| 309 | ymin = -1; |
| 310 | page = s->mode->offset; |
| 311 | for (y = 0; y < s->height; y++, page += macfb_stride) { |
| 312 | if (macfb_check_dirty(s, snap, page, macfb_stride)) { |
| 313 | uint8_t *data_display; |
| 314 | |
| 315 | data_display = surface_data(surface) + y * surface_stride(surface); |
| 316 | macfb_draw_line(s, data_display, page, s->width); |
| 317 | |
| 318 | if (ymin < 0) { |
| 319 | ymin = y; |
| 320 | } |
| 321 | } else { |
| 322 | if (ymin >= 0) { |
| 323 | qemu_console_update(s->con, 0, ymin, s->width, y - ymin); |
| 324 | ymin = -1; |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | if (ymin >= 0) { |
| 330 | qemu_console_update(s->con, 0, ymin, s->width, y - ymin); |
| 331 | } |
| 332 | |
| 333 | g_free(snap); |
| 334 | } |
| 335 | |
| 336 | static void macfb_invalidate_display(void *opaque) |
| 337 | { |
| 338 | MacfbState *s = opaque; |
| 339 | |
| 340 | memory_region_set_dirty(&s->mem_vram, 0, MACFB_VRAM_SIZE); |
| 341 | } |
| 342 | |
| 343 | static uint32_t macfb_sense_read(MacfbState *s) |
| 344 | { |
| 345 | const MacFbSense *macfb_sense; |
| 346 | uint8_t sense; |
| 347 | |
| 348 | assert(s->type < ARRAY_SIZE(macfb_sense_table)); |
| 349 | macfb_sense = &macfb_sense_table[s->type]; |
| 350 | if (macfb_sense->sense == 0x7) { |
| 351 | /* Extended sense */ |
| 352 | sense = 0; |
| 353 | if (!(macfb_sense->ext_sense & 1)) { |
| 354 | /* Pins 7-4 together */ |
| 355 | if (~s->regs[DAFB_MODE_SENSE >> 2] & 3) { |
| 356 | sense = (~s->regs[DAFB_MODE_SENSE >> 2] & 7) | 3; |
| 357 | } |
| 358 | } |
| 359 | if (!(macfb_sense->ext_sense & 2)) { |
| 360 | /* Pins 10-7 together */ |
| 361 | if (~s->regs[DAFB_MODE_SENSE >> 2] & 6) { |
| 362 | sense = (~s->regs[DAFB_MODE_SENSE >> 2] & 7) | 6; |
| 363 | } |
| 364 | } |
| 365 | if (!(macfb_sense->ext_sense & 4)) { |
| 366 | /* Pins 4-10 together */ |
| 367 | if (~s->regs[DAFB_MODE_SENSE >> 2] & 5) { |
| 368 | sense = (~s->regs[DAFB_MODE_SENSE >> 2] & 7) | 5; |
| 369 | } |
| 370 | } |
| 371 | } else { |
| 372 | /* Normal sense */ |
| 373 | sense = (~macfb_sense->sense & 7) | |
| 374 | (~s->regs[DAFB_MODE_SENSE >> 2] & 7); |
| 375 | } |
| 376 | |
| 377 | trace_macfb_sense_read(sense); |
| 378 | return sense; |
| 379 | } |
| 380 | |
| 381 | static void macfb_sense_write(MacfbState *s, uint32_t val) |
| 382 | { |
| 383 | s->regs[DAFB_MODE_SENSE >> 2] = val; |
| 384 | |
| 385 | trace_macfb_sense_write(val); |
| 386 | } |
| 387 | |
| 388 | static void macfb_update_mode(MacfbState *s) |
| 389 | { |
| 390 | s->width = s->mode->width; |
| 391 | s->height = s->mode->height; |
| 392 | s->depth = s->mode->depth; |
| 393 | |
| 394 | trace_macfb_update_mode(s->width, s->height, s->depth); |
| 395 | macfb_invalidate_display(s); |
| 396 | } |
| 397 | |
| 398 | static void macfb_mode_write(MacfbState *s) |
| 399 | { |
| 400 | const MacFbMode *macfb_mode; |
| 401 | int i; |
| 402 | |
| 403 | for (i = 0; i < ARRAY_SIZE(macfb_mode_table); i++) { |
| 404 | macfb_mode = &macfb_mode_table[i]; |
| 405 | |
| 406 | if (s->type != macfb_mode->type) { |
| 407 | continue; |
| 408 | } |
| 409 | |
| 410 | if ((s->regs[DAFB_MODE_CTRL1 >> 2] & 0xff) == |
| 411 | (macfb_mode->mode_ctrl1 & 0xff) && |
| 412 | (s->regs[DAFB_MODE_CTRL2 >> 2] & 0xff) == |
| 413 | (macfb_mode->mode_ctrl2 & 0xff)) { |
| 414 | s->mode = macfb_mode; |
| 415 | macfb_update_mode(s); |
| 416 | break; |
| 417 | } |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | static const MacFbMode *macfb_find_mode(MacfbDisplayType display_type, |
| 422 | uint16_t width, uint16_t height, |
| 423 | uint8_t depth) |
| 424 | { |
| 425 | const MacFbMode *macfb_mode; |
| 426 | int i; |
| 427 | |
| 428 | for (i = 0; i < ARRAY_SIZE(macfb_mode_table); i++) { |
| 429 | macfb_mode = &macfb_mode_table[i]; |
| 430 | |
| 431 | if (display_type == macfb_mode->type && width == macfb_mode->width && |
| 432 | height == macfb_mode->height && depth == macfb_mode->depth) { |
| 433 | return macfb_mode; |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | return NULL; |
| 438 | } |
| 439 | |
| 440 | static gchar *macfb_mode_list(void) |
| 441 | { |
| 442 | GString *list = g_string_new(""); |
| 443 | const MacFbMode *macfb_mode; |
| 444 | int i; |
| 445 | |
| 446 | for (i = 0; i < ARRAY_SIZE(macfb_mode_table); i++) { |
| 447 | macfb_mode = &macfb_mode_table[i]; |
| 448 | |
| 449 | g_string_append_printf(list, " %dx%dx%d\n", macfb_mode->width, |
| 450 | macfb_mode->height, macfb_mode->depth); |
| 451 | } |
| 452 | |
| 453 | return g_string_free(list, FALSE); |
| 454 | } |
| 455 | |
| 456 | |
| 457 | static bool macfb_update_display(void *opaque) |
| 458 | { |
| 459 | MacfbState *s = opaque; |
| 460 | DisplaySurface *surface = qemu_console_surface(s->con); |
| 461 | |
| 462 | qemu_flush_coalesced_mmio_buffer(); |
| 463 | |
| 464 | if (s->width == 0 || s->height == 0) { |
| 465 | return true; |
| 466 | } |
| 467 | |
| 468 | if (s->width != surface_width(surface) || |
| 469 | s->height != surface_height(surface)) { |
| 470 | qemu_console_resize(s->con, s->width, s->height); |
| 471 | } |
| 472 | |
| 473 | macfb_draw_graphic(s); |
| 474 | |
| 475 | return true; |
| 476 | } |
| 477 | |
| 478 | static void macfb_update_irq(MacfbState *s) |
| 479 | { |
| 480 | uint32_t irq_state = s->regs[DAFB_INTR_STAT >> 2] & |
| 481 | s->regs[DAFB_INTR_MASK >> 2]; |
| 482 | |
| 483 | if (irq_state) { |
| 484 | qemu_irq_raise(s->irq); |
| 485 | } else { |
| 486 | qemu_irq_lower(s->irq); |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | static int64_t macfb_next_vbl(void) |
| 491 | { |
| 492 | return (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + DAFB_INTR_VBL_PERIOD_NS) / |
| 493 | DAFB_INTR_VBL_PERIOD_NS * DAFB_INTR_VBL_PERIOD_NS; |
| 494 | } |
| 495 | |
| 496 | static void macfb_vbl_timer(void *opaque) |
| 497 | { |
| 498 | MacfbState *s = opaque; |
| 499 | int64_t next_vbl; |
| 500 | |
| 501 | s->regs[DAFB_INTR_STAT >> 2] |= DAFB_INTR_VBL; |
| 502 | macfb_update_irq(s); |
| 503 | |
| 504 | /* 60 Hz irq */ |
| 505 | next_vbl = macfb_next_vbl(); |
| 506 | timer_mod(s->vbl_timer, next_vbl); |
| 507 | } |
| 508 | |
| 509 | static void macfb_reset(MacfbState *s) |
| 510 | { |
| 511 | int i; |
| 512 | |
| 513 | s->palette_current = 0; |
| 514 | for (i = 0; i < 256; i++) { |
| 515 | s->color_palette[i * 3] = 255 - i; |
| 516 | s->color_palette[i * 3 + 1] = 255 - i; |
| 517 | s->color_palette[i * 3 + 2] = 255 - i; |
| 518 | } |
| 519 | memset(s->vram, 0, MACFB_VRAM_SIZE); |
| 520 | macfb_invalidate_display(s); |
| 521 | } |
| 522 | |
| 523 | static uint64_t macfb_ctrl_read(void *opaque, |
| 524 | hwaddr addr, |
| 525 | unsigned int size) |
| 526 | { |
| 527 | MacfbState *s = opaque; |
| 528 | uint64_t val = 0; |
| 529 | |
| 530 | switch (addr) { |
| 531 | case DAFB_MODE_VADDR1: |
| 532 | case DAFB_MODE_VADDR2: |
| 533 | case DAFB_MODE_CTRL1: |
| 534 | case DAFB_MODE_CTRL2: |
| 535 | case DAFB_INTR_STAT: |
| 536 | val = s->regs[addr >> 2]; |
| 537 | break; |
| 538 | case DAFB_MODE_SENSE: |
| 539 | val = macfb_sense_read(s); |
| 540 | break; |
| 541 | case DAFB_LUT ... DAFB_LUT + 3: |
| 542 | val = s->color_palette[s->palette_current]; |
| 543 | s->palette_current = (s->palette_current + 1) % |
| 544 | ARRAY_SIZE(s->color_palette); |
| 545 | break; |
| 546 | default: |
| 547 | if (addr < MACFB_CTRL_TOPADDR) { |
| 548 | val = s->regs[addr >> 2]; |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | trace_macfb_ctrl_read(addr, val, size); |
| 553 | return val; |
| 554 | } |
| 555 | |
| 556 | static void macfb_ctrl_write(void *opaque, |
| 557 | hwaddr addr, |
| 558 | uint64_t val, |
| 559 | unsigned int size) |
| 560 | { |
| 561 | MacfbState *s = opaque; |
| 562 | int64_t next_vbl; |
| 563 | |
| 564 | switch (addr) { |
| 565 | case DAFB_MODE_VADDR1: |
| 566 | case DAFB_MODE_VADDR2: |
| 567 | s->regs[addr >> 2] = val; |
| 568 | break; |
| 569 | case DAFB_MODE_CTRL1 ... DAFB_MODE_CTRL1 + 3: |
| 570 | case DAFB_MODE_CTRL2 ... DAFB_MODE_CTRL2 + 3: |
| 571 | s->regs[addr >> 2] = val; |
| 572 | if (val) { |
| 573 | macfb_mode_write(s); |
| 574 | } |
| 575 | break; |
| 576 | case DAFB_MODE_SENSE: |
| 577 | macfb_sense_write(s, val); |
| 578 | break; |
| 579 | case DAFB_INTR_MASK: |
| 580 | s->regs[addr >> 2] = val; |
| 581 | if (val & DAFB_INTR_VBL) { |
| 582 | next_vbl = macfb_next_vbl(); |
| 583 | timer_mod(s->vbl_timer, next_vbl); |
| 584 | } else { |
| 585 | timer_del(s->vbl_timer); |
| 586 | } |
| 587 | break; |
| 588 | case DAFB_INTR_CLEAR: |
| 589 | s->regs[DAFB_INTR_STAT >> 2] &= ~DAFB_INTR_VBL; |
| 590 | macfb_update_irq(s); |
| 591 | break; |
| 592 | case DAFB_LUT_INDEX: |
| 593 | s->palette_current = (val & 0xff) * 3; |
| 594 | break; |
| 595 | case DAFB_LUT ... DAFB_LUT + 3: |
| 596 | s->color_palette[s->palette_current] = val & 0xff; |
| 597 | s->palette_current = (s->palette_current + 1) % |
| 598 | ARRAY_SIZE(s->color_palette); |
| 599 | if (s->palette_current % 3) { |
| 600 | macfb_invalidate_display(s); |
| 601 | } |
| 602 | break; |
| 603 | default: |
| 604 | if (addr < MACFB_CTRL_TOPADDR) { |
| 605 | s->regs[addr >> 2] = val; |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | trace_macfb_ctrl_write(addr, val, size); |
| 610 | } |
| 611 | |
| 612 | static const MemoryRegionOps macfb_ctrl_ops = { |
| 613 | .read = macfb_ctrl_read, |
| 614 | .write = macfb_ctrl_write, |
| 615 | .endianness = DEVICE_BIG_ENDIAN, |
| 616 | .impl.min_access_size = 1, |
| 617 | .impl.max_access_size = 4, |
| 618 | }; |
| 619 | |
| 620 | static int macfb_post_load(void *opaque, int version_id) |
| 621 | { |
| 622 | macfb_mode_write(opaque); |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | static const VMStateDescription vmstate_macfb = { |
| 627 | .name = "macfb", |
| 628 | .version_id = 1, |
| 629 | .minimum_version_id = 1, |
| 630 | .post_load = macfb_post_load, |
| 631 | .fields = (const VMStateField[]) { |
| 632 | VMSTATE_UINT8(type, MacfbState), |
| 633 | VMSTATE_UINT8_ARRAY(color_palette, MacfbState, 256 * 3), |
| 634 | VMSTATE_UINT32(palette_current, MacfbState), |
| 635 | VMSTATE_UINT32_ARRAY(regs, MacfbState, MACFB_NUM_REGS), |
| 636 | VMSTATE_TIMER_PTR(vbl_timer, MacfbState), |
| 637 | VMSTATE_END_OF_LIST() |
| 638 | } |
| 639 | }; |
| 640 | |
| 641 | static const GraphicHwOps macfb_ops = { |
| 642 | .invalidate = macfb_invalidate_display, |
| 643 | .gfx_update = macfb_update_display, |
| 644 | }; |
| 645 | |
| 646 | static bool macfb_common_realize(DeviceState *dev, MacfbState *s, Error **errp) |
| 647 | { |
| 648 | DisplaySurface *surface; |
| 649 | |
| 650 | if (s->width == 1152 && s->height == 870) { |
| 651 | s->type = MACFB_DISPLAY_APPLE_21_COLOR; |
| 652 | } |
| 653 | |
| 654 | s->mode = macfb_find_mode(s->type, s->width, s->height, s->depth); |
| 655 | if (!s->mode) { |
| 656 | gchar *list; |
| 657 | error_setg(errp, "unknown display mode: width %d, height %d, depth %d", |
| 658 | s->width, s->height, s->depth); |
| 659 | list = macfb_mode_list(); |
| 660 | error_append_hint(errp, "Available modes:\n%s", list); |
| 661 | g_free(list); |
| 662 | |
| 663 | return false; |
| 664 | } |
| 665 | |
| 666 | /* |
| 667 | * Set mode control registers to match the mode found above so that |
| 668 | * macfb_mode_write() does the right thing if no MacOS toolbox ROM |
| 669 | * is present to initialise them |
| 670 | */ |
| 671 | s->regs[DAFB_MODE_CTRL1 >> 2] = s->mode->mode_ctrl1; |
| 672 | s->regs[DAFB_MODE_CTRL2 >> 2] = s->mode->mode_ctrl2; |
| 673 | |
| 674 | s->con = qemu_graphic_console_create(dev, 0, &macfb_ops, s); |
| 675 | surface = qemu_console_surface(s->con); |
| 676 | |
| 677 | if (surface_bits_per_pixel(surface) != 32) { |
| 678 | error_setg(errp, "unknown host depth %d", |
| 679 | surface_bits_per_pixel(surface)); |
| 680 | return false; |
| 681 | } |
| 682 | |
| 683 | memory_region_init_io(&s->mem_ctrl, OBJECT(dev), &macfb_ctrl_ops, s, |
| 684 | "macfb-ctrl", 0x1000); |
| 685 | |
| 686 | memory_region_init_ram(&s->mem_vram, OBJECT(dev), "macfb-vram", |
| 687 | MACFB_VRAM_SIZE, &error_abort); |
| 688 | memory_region_set_log(&s->mem_vram, true, DIRTY_MEMORY_VGA); |
| 689 | s->vram = memory_region_get_ram_ptr(&s->mem_vram); |
| 690 | s->vram_bit_mask = MACFB_VRAM_SIZE - 1; |
| 691 | |
| 692 | s->vbl_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, macfb_vbl_timer, s); |
| 693 | macfb_update_mode(s); |
| 694 | return true; |
| 695 | } |
| 696 | |
| 697 | static void macfb_sysbus_realize(DeviceState *dev, Error **errp) |
| 698 | { |
| 699 | MacfbSysBusState *s = MACFB(dev); |
| 700 | MacfbState *ms = &s->macfb; |
| 701 | |
| 702 | if (!macfb_common_realize(dev, ms, errp)) { |
| 703 | return; |
| 704 | } |
| 705 | |
| 706 | sysbus_init_mmio(SYS_BUS_DEVICE(s), &ms->mem_ctrl); |
| 707 | sysbus_init_mmio(SYS_BUS_DEVICE(s), &ms->mem_vram); |
| 708 | |
| 709 | qdev_init_gpio_out(dev, &ms->irq, 1); |
| 710 | } |
| 711 | |
| 712 | static void macfb_nubus_set_irq(void *opaque, int n, int level) |
| 713 | { |
| 714 | MacfbNubusState *s = NUBUS_MACFB(opaque); |
| 715 | NubusDevice *nd = NUBUS_DEVICE(s); |
| 716 | |
| 717 | nubus_set_irq(nd, level); |
| 718 | } |
| 719 | |
| 720 | static void macfb_nubus_realize(DeviceState *dev, Error **errp) |
| 721 | { |
| 722 | ERRP_GUARD(); |
| 723 | NubusDevice *nd = NUBUS_DEVICE(dev); |
| 724 | MacfbNubusState *s = NUBUS_MACFB(dev); |
| 725 | MacfbNubusDeviceClass *ndc = NUBUS_MACFB_GET_CLASS(dev); |
| 726 | MacfbState *ms = &s->macfb; |
| 727 | |
| 728 | ndc->parent_realize(dev, errp); |
| 729 | if (*errp) { |
| 730 | return; |
| 731 | } |
| 732 | |
| 733 | if (!macfb_common_realize(dev, ms, errp)) { |
| 734 | return; |
| 735 | } |
| 736 | |
| 737 | memory_region_add_subregion(&nd->slot_mem, DAFB_BASE, &ms->mem_ctrl); |
| 738 | memory_region_add_subregion(&nd->slot_mem, VIDEO_BASE, &ms->mem_vram); |
| 739 | |
| 740 | ms->irq = qemu_allocate_irq(macfb_nubus_set_irq, s, 0); |
| 741 | } |
| 742 | |
| 743 | static void macfb_nubus_unrealize(DeviceState *dev) |
| 744 | { |
| 745 | MacfbNubusState *s = NUBUS_MACFB(dev); |
| 746 | MacfbNubusDeviceClass *ndc = NUBUS_MACFB_GET_CLASS(dev); |
| 747 | MacfbState *ms = &s->macfb; |
| 748 | |
| 749 | ndc->parent_unrealize(dev); |
| 750 | |
| 751 | qemu_free_irq(ms->irq); |
| 752 | } |
| 753 | |
| 754 | static void macfb_sysbus_reset(DeviceState *d) |
| 755 | { |
| 756 | MacfbSysBusState *s = MACFB(d); |
| 757 | macfb_reset(&s->macfb); |
| 758 | } |
| 759 | |
| 760 | static void macfb_nubus_reset(DeviceState *d) |
| 761 | { |
| 762 | MacfbNubusState *s = NUBUS_MACFB(d); |
| 763 | macfb_reset(&s->macfb); |
| 764 | } |
| 765 | |
| 766 | static const Property macfb_sysbus_properties[] = { |
| 767 | DEFINE_PROP_UINT32("width", MacfbSysBusState, macfb.width, 640), |
| 768 | DEFINE_PROP_UINT32("height", MacfbSysBusState, macfb.height, 480), |
| 769 | DEFINE_PROP_UINT8("depth", MacfbSysBusState, macfb.depth, 8), |
| 770 | DEFINE_PROP_UINT8("display", MacfbSysBusState, macfb.type, |
| 771 | MACFB_DISPLAY_VGA), |
| 772 | }; |
| 773 | |
| 774 | static const VMStateDescription vmstate_macfb_sysbus = { |
| 775 | .name = "macfb-sysbus", |
| 776 | .version_id = 1, |
| 777 | .minimum_version_id = 1, |
| 778 | .fields = (const VMStateField[]) { |
| 779 | VMSTATE_STRUCT(macfb, MacfbSysBusState, 1, vmstate_macfb, MacfbState), |
| 780 | VMSTATE_END_OF_LIST() |
| 781 | } |
| 782 | }; |
| 783 | |
| 784 | static const Property macfb_nubus_properties[] = { |
| 785 | DEFINE_PROP_UINT32("width", MacfbNubusState, macfb.width, 640), |
| 786 | DEFINE_PROP_UINT32("height", MacfbNubusState, macfb.height, 480), |
| 787 | DEFINE_PROP_UINT8("depth", MacfbNubusState, macfb.depth, 8), |
| 788 | DEFINE_PROP_UINT8("display", MacfbNubusState, macfb.type, |
| 789 | MACFB_DISPLAY_VGA), |
| 790 | }; |
| 791 | |
| 792 | static const VMStateDescription vmstate_macfb_nubus = { |
| 793 | .name = "macfb-nubus", |
| 794 | .version_id = 1, |
| 795 | .minimum_version_id = 1, |
| 796 | .fields = (const VMStateField[]) { |
| 797 | VMSTATE_STRUCT(macfb, MacfbNubusState, 1, vmstate_macfb, MacfbState), |
| 798 | VMSTATE_END_OF_LIST() |
| 799 | } |
| 800 | }; |
| 801 | |
| 802 | static void macfb_sysbus_class_init(ObjectClass *klass, const void *data) |
| 803 | { |
| 804 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 805 | |
| 806 | dc->realize = macfb_sysbus_realize; |
| 807 | dc->desc = "SysBus Macintosh framebuffer"; |
| 808 | device_class_set_legacy_reset(dc, macfb_sysbus_reset); |
| 809 | dc->vmsd = &vmstate_macfb_sysbus; |
| 810 | device_class_set_props(dc, macfb_sysbus_properties); |
| 811 | } |
| 812 | |
| 813 | static void macfb_nubus_class_init(ObjectClass *klass, const void *data) |
| 814 | { |
| 815 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 816 | MacfbNubusDeviceClass *ndc = NUBUS_MACFB_CLASS(klass); |
| 817 | |
| 818 | device_class_set_parent_realize(dc, macfb_nubus_realize, |
| 819 | &ndc->parent_realize); |
| 820 | device_class_set_parent_unrealize(dc, macfb_nubus_unrealize, |
| 821 | &ndc->parent_unrealize); |
| 822 | dc->desc = "Nubus Macintosh framebuffer"; |
| 823 | device_class_set_legacy_reset(dc, macfb_nubus_reset); |
| 824 | dc->vmsd = &vmstate_macfb_nubus; |
| 825 | set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); |
| 826 | device_class_set_props(dc, macfb_nubus_properties); |
| 827 | } |
| 828 | |
| 829 | static const TypeInfo macfb_sysbus_info = { |
| 830 | .name = TYPE_MACFB, |
| 831 | .parent = TYPE_SYS_BUS_DEVICE, |
| 832 | .instance_size = sizeof(MacfbSysBusState), |
| 833 | .class_init = macfb_sysbus_class_init, |
| 834 | }; |
| 835 | |
| 836 | static const TypeInfo macfb_nubus_info = { |
| 837 | .name = TYPE_NUBUS_MACFB, |
| 838 | .parent = TYPE_NUBUS_DEVICE, |
| 839 | .instance_size = sizeof(MacfbNubusState), |
| 840 | .class_init = macfb_nubus_class_init, |
| 841 | .class_size = sizeof(MacfbNubusDeviceClass), |
| 842 | }; |
| 843 | |
| 844 | static void macfb_register_types(void) |
| 845 | { |
| 846 | type_register_static(&macfb_sysbus_info); |
| 847 | type_register_static(&macfb_nubus_info); |
| 848 | } |
| 849 | |
| 850 | type_init(macfb_register_types) |