2 * Copyright (c) 2005 Marcel Moolenaar
5 * Copyright (c) 2009 The FreeBSD Foundation
8 * Portions of this software were developed by Ed Schouten
9 * under sponsorship from the FreeBSD Foundation.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/systm.h>
42 #include <sys/module.h>
45 #include <dev/vt/vt.h>
46 #include <dev/vt/colors/vt_termcolors.h>
47 #include <dev/vt/hw/vga/vt_vga_reg.h>
48 #include <dev/pci/pcivar.h>
50 #include <machine/bus.h>
51 #if defined(__amd64__) || defined(__i386__)
52 #include <contrib/dev/acpica/include/acpi.h>
53 #include <machine/md_var.h>
57 bus_space_tag_t vga_fb_tag;
58 bus_space_handle_t vga_fb_handle;
59 bus_space_tag_t vga_reg_tag;
60 bus_space_handle_t vga_reg_handle;
62 term_color_t vga_curfg, vga_curbg;
63 boolean_t vga_enabled;
66 /* Convenience macros. */
67 #define MEM_READ1(sc, ofs) \
68 bus_space_read_1(sc->vga_fb_tag, sc->vga_fb_handle, ofs)
69 #define MEM_WRITE1(sc, ofs, val) \
70 bus_space_write_1(sc->vga_fb_tag, sc->vga_fb_handle, ofs, val)
71 #define MEM_WRITE2(sc, ofs, val) \
72 bus_space_write_2(sc->vga_fb_tag, sc->vga_fb_handle, ofs, val)
73 #define REG_READ1(sc, reg) \
74 bus_space_read_1(sc->vga_reg_tag, sc->vga_reg_handle, reg)
75 #define REG_WRITE1(sc, reg, val) \
76 bus_space_write_1(sc->vga_reg_tag, sc->vga_reg_handle, reg, val)
78 #define VT_VGA_WIDTH 640
79 #define VT_VGA_HEIGHT 480
80 #define VT_VGA_MEMSIZE (VT_VGA_WIDTH * VT_VGA_HEIGHT / 8)
83 * VGA is designed to handle 8 pixels at a time (8 pixels in one byte of
86 #define VT_VGA_PIXELS_BLOCK 8
89 * We use an off-screen addresses to:
90 * o store the background color;
91 * o store pixels pattern.
92 * Those addresses are then loaded in the latches once.
94 #define VT_VGA_BGCOLOR_OFFSET VT_VGA_MEMSIZE
96 static vd_probe_t vga_probe;
97 static vd_init_t vga_init;
98 static vd_blank_t vga_blank;
99 static vd_bitblt_text_t vga_bitblt_text;
100 static vd_invalidate_text_t vga_invalidate_text;
101 static vd_bitblt_bmp_t vga_bitblt_bitmap;
102 static vd_drawrect_t vga_drawrect;
103 static vd_setpixel_t vga_setpixel;
104 static vd_postswitch_t vga_postswitch;
106 static const struct vt_driver vt_vga_driver = {
108 .vd_probe = vga_probe,
110 .vd_blank = vga_blank,
111 .vd_bitblt_text = vga_bitblt_text,
112 .vd_invalidate_text = vga_invalidate_text,
113 .vd_bitblt_bmp = vga_bitblt_bitmap,
114 .vd_drawrect = vga_drawrect,
115 .vd_setpixel = vga_setpixel,
116 .vd_postswitch = vga_postswitch,
117 .vd_priority = VD_PRIORITY_GENERIC,
121 * Driver supports both text mode and graphics mode. Make sure the
122 * buffer is always big enough to support both.
124 static struct vga_softc vga_conssoftc;
125 VT_DRIVER_DECLARE(vt_vga, vt_vga_driver);
128 vga_setwmode(struct vt_device *vd, int wmode)
130 struct vga_softc *sc = vd->vd_softc;
132 if (sc->vga_wmode == wmode)
135 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_MODE);
136 REG_WRITE1(sc, VGA_GC_DATA, wmode);
137 sc->vga_wmode = wmode;
141 /* Re-enable all plans. */
142 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_MAP_MASK);
143 REG_WRITE1(sc, VGA_SEQ_DATA, VGA_SEQ_MM_EM3 | VGA_SEQ_MM_EM2 |
144 VGA_SEQ_MM_EM1 | VGA_SEQ_MM_EM0);
150 vga_setfg(struct vt_device *vd, term_color_t color)
152 struct vga_softc *sc = vd->vd_softc;
156 if (sc->vga_curfg == color)
159 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_SET_RESET);
160 REG_WRITE1(sc, VGA_GC_DATA, cons_to_vga_colors[color]);
161 sc->vga_curfg = color;
165 vga_setbg(struct vt_device *vd, term_color_t color)
167 struct vga_softc *sc = vd->vd_softc;
171 if (sc->vga_curbg == color)
174 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_SET_RESET);
175 REG_WRITE1(sc, VGA_GC_DATA, cons_to_vga_colors[color]);
178 * Write 8 pixels using the background color to an off-screen
179 * byte in the video memory.
181 MEM_WRITE1(sc, VT_VGA_BGCOLOR_OFFSET, 0xff);
184 * Read those 8 pixels back to load the background color in the
187 MEM_READ1(sc, VT_VGA_BGCOLOR_OFFSET);
189 sc->vga_curbg = color;
192 * The Set/Reset register doesn't contain the fg color anymore,
193 * store an invalid color.
195 sc->vga_curfg = 0xff;
199 * Binary searchable table for Unicode to CP437 conversion.
203 uint16_t unicode_base;
208 static const struct unicp437 cp437table[] = {
209 { 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
210 { 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
211 { 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
212 { 0x00a6, 0x7c, 0x00 },
213 { 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
214 { 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
215 { 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
216 { 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
217 { 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
218 { 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
219 { 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
220 { 0x00bf, 0xa8, 0x00 }, { 0x00c4, 0x8e, 0x01 },
221 { 0x00c6, 0x92, 0x00 }, { 0x00c7, 0x80, 0x00 },
222 { 0x00c9, 0x90, 0x00 }, { 0x00d1, 0xa5, 0x00 },
223 { 0x00d6, 0x99, 0x00 }, { 0x00dc, 0x9a, 0x00 },
224 { 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
225 { 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
226 { 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
227 { 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
228 { 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
229 { 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
230 { 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
231 { 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
232 { 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
233 { 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
234 { 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
235 { 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
236 { 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
237 { 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
238 { 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
239 { 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
240 { 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
241 { 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
242 { 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
243 { 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
244 { 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
245 { 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
246 { 0x2013, 0x2d, 0x00 },
247 { 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
248 { 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
249 { 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
250 { 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
251 { 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
252 { 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
253 { 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
254 { 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
255 { 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
256 { 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
257 { 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
258 { 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
259 { 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
260 { 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
261 { 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
262 { 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
263 { 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
264 { 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
265 { 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
266 { 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
267 { 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
268 { 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
269 { 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
270 { 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
271 { 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
272 { 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
273 { 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
274 { 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
275 { 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
276 { 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
277 { 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
278 { 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
279 { 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
280 { 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
281 { 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
282 { 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
283 { 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
284 { 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
285 { 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
286 { 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
287 { 0x25ac, 0x16, 0x00 }, { 0x25b2, 0x1e, 0x00 },
288 { 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
289 { 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
290 { 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
291 { 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
292 { 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
293 { 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
294 { 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x00 },
295 { 0x266c, 0x0e, 0x00 }, { 0x2713, 0xfb, 0x00 },
296 { 0x27e8, 0x3c, 0x00 }, { 0x27e9, 0x3e, 0x00 },
300 vga_get_cp437(term_char_t c)
305 max = nitems(cp437table) - 1;
307 if (c < cp437table[0].unicode_base ||
308 c > cp437table[max].unicode_base + cp437table[max].length)
312 mid = (min + max) / 2;
313 if (c < cp437table[mid].unicode_base)
315 else if (c > cp437table[mid].unicode_base +
316 cp437table[mid].length)
319 return (c - cp437table[mid].unicode_base +
320 cp437table[mid].cp437_base);
327 vga_blank(struct vt_device *vd, term_color_t color)
329 struct vga_softc *sc = vd->vd_softc;
332 vga_setfg(vd, color);
333 for (ofs = 0; ofs < VT_VGA_MEMSIZE; ofs++)
334 MEM_WRITE1(sc, ofs, 0xff);
338 vga_bitblt_put(struct vt_device *vd, u_long dst, term_color_t color,
341 struct vga_softc *sc = vd->vd_softc;
343 /* Skip empty writes, in order to avoid palette changes. */
345 vga_setfg(vd, color);
347 * When this MEM_READ1() gets disabled, all sorts of
348 * artifacts occur. This is because this read loads the
349 * set of 8 pixels that are about to be changed. There
350 * is one scenario where we can avoid the read, namely
351 * if all pixels are about to be overwritten anyway.
356 /* The bg color was trashed by the reads. */
357 sc->vga_curbg = 0xff;
359 MEM_WRITE1(sc, dst, v);
364 vga_setpixel(struct vt_device *vd, int x, int y, term_color_t color)
367 if (vd->vd_flags & VDF_TEXTMODE)
370 vga_bitblt_put(vd, (y * VT_VGA_WIDTH / 8) + (x / 8), color,
375 vga_drawrect(struct vt_device *vd, int x1, int y1, int x2, int y2, int fill,
380 if (vd->vd_flags & VDF_TEXTMODE)
383 for (y = y1; y <= y2; y++) {
384 if (fill || (y == y1) || (y == y2)) {
385 for (x = x1; x <= x2; x++)
386 vga_setpixel(vd, x, y, color);
388 vga_setpixel(vd, x1, y, color);
389 vga_setpixel(vd, x2, y, color);
395 vga_compute_shifted_pattern(const uint8_t *src, unsigned int bytes,
396 unsigned int src_x, unsigned int x_count, unsigned int dst_x,
397 uint8_t *pattern, uint8_t *mask)
404 * This mask has bits set, where a pixel (ether 0 or 1)
405 * comes from the source bitmap.
410 << (8 - x_count - dst_x);
413 if (n == (src_x + x_count - 1) / 8) {
414 /* All the pixels we want are in the same byte. */
417 *pattern >>= (dst_x - src_x % 8);
419 *pattern <<= (src_x % 8 - dst_x);
421 /* The pixels we want are split into two bytes. */
422 if (dst_x >= src_x % 8) {
424 src[n] << (8 - dst_x - src_x % 8) |
425 src[n + 1] >> (dst_x - src_x % 8);
428 src[n] << (src_x % 8 - dst_x) |
429 src[n + 1] >> (8 - src_x % 8 - dst_x);
435 vga_copy_bitmap_portion(uint8_t *pattern_2colors, uint8_t *pattern_ncolors,
436 const uint8_t *src, const uint8_t *src_mask, unsigned int src_width,
437 unsigned int src_x, unsigned int dst_x, unsigned int x_count,
438 unsigned int src_y, unsigned int dst_y, unsigned int y_count,
439 term_color_t fg, term_color_t bg, int overwrite)
441 unsigned int i, bytes;
442 uint8_t pattern, relevant_bits, mask;
444 bytes = (src_width + 7) / 8;
446 for (i = 0; i < y_count; ++i) {
447 vga_compute_shifted_pattern(src + (src_y + i) * bytes,
448 bytes, src_x, x_count, dst_x, &pattern, &relevant_bits);
450 if (src_mask == NULL) {
452 * No src mask. Consider that all wanted bits
453 * from the source are "authoritative".
455 mask = relevant_bits;
458 * There's an src mask. We shift it the same way
459 * we shifted the source pattern.
461 vga_compute_shifted_pattern(
462 src_mask + (src_y + i) * bytes,
463 bytes, src_x, x_count, dst_x,
466 /* Now, only keep the wanted bits among them. */
467 mask &= relevant_bits;
471 * Clear bits from the pattern which must be
472 * transparent, according to the source mask.
476 /* Set the bits in the 2-colors array. */
478 pattern_2colors[dst_y + i] &= ~mask;
479 pattern_2colors[dst_y + i] |= pattern;
481 if (pattern_ncolors == NULL)
485 * Set the same bits in the n-colors array. This one
486 * supports transparency, when a given bit is cleared in
491 * Ensure that the pixels used by this bitmap are
492 * cleared in other colors.
494 for (int j = 0; j < 16; ++j)
495 pattern_ncolors[(dst_y + i) * 16 + j] &=
498 pattern_ncolors[(dst_y + i) * 16 + fg] |= pattern;
499 pattern_ncolors[(dst_y + i) * 16 + bg] |= (~pattern & mask);
504 vga_bitblt_pixels_block_2colors(struct vt_device *vd, const uint8_t *masks,
505 term_color_t fg, term_color_t bg,
506 unsigned int x, unsigned int y, unsigned int height)
508 unsigned int i, offset;
509 struct vga_softc *sc;
512 * The great advantage of Write Mode 3 is that we just need
513 * to load the foreground in the Set/Reset register, load the
514 * background color in the latches register (this is done
515 * through a write in offscreen memory followed by a read of
516 * that data), then write the pattern to video memory. This
517 * pattern indicates if the pixel should use the foreground
518 * color (bit set) or the background color (bit cleared).
525 offset = (VT_VGA_WIDTH * y + x) / 8;
527 for (i = 0; i < height; ++i, offset += VT_VGA_WIDTH / 8) {
528 MEM_WRITE1(sc, offset, masks[i]);
533 vga_bitblt_pixels_block_ncolors(struct vt_device *vd, const uint8_t *masks,
534 unsigned int x, unsigned int y, unsigned int height)
536 unsigned int i, j, plan, color, offset;
537 struct vga_softc *sc;
538 uint8_t mask, plans[height * 4];
542 memset(plans, 0, sizeof(plans));
545 * To write a group of pixels using 3 or more colors, we select
546 * Write Mode 0 and write one byte to each plan separately.
550 * We first compute each byte: each plan contains one bit of the
551 * color code for each of the 8 pixels.
553 * For example, if the 8 pixels are like this:
558 * Y (yellow) = 0b0011
560 * The corresponding for bytes are:
562 * Plan 0: 10000001 = 0x81
563 * Plan 1: 10000001 = 0x81
564 * Plan 2: 10000000 = 0x80
565 * Plan 3: 00000000 = 0x00
568 * | +-----> 0b0000 (B)
569 * +--------> 0b0111 (G)
572 for (i = 0; i < height; ++i) {
573 for (color = 0; color < 16; ++color) {
574 mask = masks[i * 16 + color];
578 for (j = 0; j < 8; ++j) {
579 if (!((mask >> (7 - j)) & 0x1))
582 /* The pixel "j" uses color "color". */
583 for (plan = 0; plan < 4; ++plan)
584 plans[i * 4 + plan] |=
585 ((color >> plan) & 0x1) << (7 - j);
591 * The bytes are ready: we now switch to Write Mode 0 and write
592 * all bytes, one plan at a time.
596 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_MAP_MASK);
597 for (plan = 0; plan < 4; ++plan) {
599 REG_WRITE1(sc, VGA_SEQ_DATA, 1 << plan);
601 /* Write all bytes for this plan, from Y to Y+height. */
602 for (i = 0; i < height; ++i) {
603 offset = (VT_VGA_WIDTH * (y + i) + x) / 8;
604 MEM_WRITE1(sc, offset, plans[i * 4 + plan]);
610 vga_bitblt_one_text_pixels_block(struct vt_device *vd,
611 const struct vt_window *vw, unsigned int x, unsigned int y)
613 const struct vt_buf *vb;
614 const struct vt_font *vf;
615 unsigned int i, col, row, src_x, x_count;
616 unsigned int used_colors_list[16], used_colors;
617 uint8_t pattern_2colors[vw->vw_font->vf_height];
618 uint8_t pattern_ncolors[vw->vw_font->vf_height * 16];
627 * The current pixels block.
629 * We fill it with portions of characters, because both "grids"
632 * i is the index in this pixels block.
637 memset(used_colors_list, 0, sizeof(used_colors_list));
638 memset(pattern_2colors, 0, sizeof(pattern_2colors));
639 memset(pattern_ncolors, 0, sizeof(pattern_ncolors));
641 if (i < vw->vw_draw_area.tr_begin.tp_col) {
643 * i is in the margin used to center the text area on
647 i = vw->vw_draw_area.tr_begin.tp_col;
650 while (i < x + VT_VGA_PIXELS_BLOCK &&
651 i < vw->vw_draw_area.tr_end.tp_col) {
653 * Find which character is drawn on this pixel in the
656 * While here, record what colors it uses.
659 col = (i - vw->vw_draw_area.tr_begin.tp_col) / vf->vf_width;
660 row = (y - vw->vw_draw_area.tr_begin.tp_row) / vf->vf_height;
662 c = VTBUF_GET_FIELD(vb, row, col);
663 src = vtfont_lookup(vf, c);
665 vt_determine_colors(c, VTBUF_ISCURSOR(vb, row, col), &fg, &bg);
666 if ((used_colors_list[fg] & 0x1) != 0x1)
668 if ((used_colors_list[bg] & 0x2) != 0x2)
670 used_colors_list[fg] |= 0x1;
671 used_colors_list[bg] |= 0x2;
674 * Compute the portion of the character we want to draw,
675 * because the pixels block may start in the middle of a
678 * The first pixel to draw in the character is
679 * the current position -
680 * the start position of the character
682 * The last pixel to draw is either
683 * - the last pixel of the character, or
684 * - the pixel of the character matching the end of
686 * whichever comes first. This position is then
687 * changed to be relative to the start position of the
692 (col * vf->vf_width + vw->vw_draw_area.tr_begin.tp_col);
694 (col + 1) * vf->vf_width +
695 vw->vw_draw_area.tr_begin.tp_col,
696 x + VT_VGA_PIXELS_BLOCK),
697 vw->vw_draw_area.tr_end.tp_col);
698 x_count -= col * vf->vf_width +
699 vw->vw_draw_area.tr_begin.tp_col;
702 /* Copy a portion of the character. */
703 vga_copy_bitmap_portion(pattern_2colors, pattern_ncolors,
704 src, NULL, vf->vf_width,
705 src_x, i % VT_VGA_PIXELS_BLOCK, x_count,
706 0, 0, vf->vf_height, fg, bg, 0);
708 /* We move to the next portion. */
712 #ifndef SC_NO_CUTPASTE
714 * Copy the mouse pointer bitmap if it's over the current pixels
717 * We use the saved cursor position (saved in vt_flush()), because
718 * the current position could be different than the one used
719 * to mark the area dirty.
721 term_rect_t drawn_area;
723 drawn_area.tr_begin.tp_col = x;
724 drawn_area.tr_begin.tp_row = y;
725 drawn_area.tr_end.tp_col = x + VT_VGA_PIXELS_BLOCK;
726 drawn_area.tr_end.tp_row = y + vf->vf_height;
727 if (vd->vd_mshown && vt_is_cursor_in_area(vd, &drawn_area)) {
728 struct vt_mouse_cursor *cursor;
730 unsigned int dst_x, src_y, dst_y, y_count;
732 cursor = vd->vd_mcursor;
733 mx = vd->vd_mx_drawn + vw->vw_draw_area.tr_begin.tp_col;
734 my = vd->vd_my_drawn + vw->vw_draw_area.tr_begin.tp_row;
736 /* Compute the portion of the cursor we want to copy. */
737 src_x = x > mx ? x - mx : 0;
738 dst_x = mx > x ? mx - x : 0;
739 x_count = min(min(min(
740 cursor->width - src_x,
741 x + VT_VGA_PIXELS_BLOCK - mx),
742 vw->vw_draw_area.tr_end.tp_col - mx),
743 VT_VGA_PIXELS_BLOCK);
746 * The cursor isn't aligned on the Y-axis with
747 * characters, so we need to compute the vertical
750 src_y = y > my ? y - my : 0;
751 dst_y = my > y ? my - y : 0;
753 min(cursor->height - src_y, y + vf->vf_height - my),
756 /* Copy the cursor portion. */
757 vga_copy_bitmap_portion(pattern_2colors, pattern_ncolors,
758 cursor->map, cursor->mask, cursor->width,
759 src_x, dst_x, x_count, src_y, dst_y, y_count,
760 vd->vd_mcursor_fg, vd->vd_mcursor_bg, 1);
762 if ((used_colors_list[vd->vd_mcursor_fg] & 0x1) != 0x1)
764 if ((used_colors_list[vd->vd_mcursor_bg] & 0x2) != 0x2)
770 * The pixels block is completed, we can now draw it on the
773 if (used_colors == 2)
774 vga_bitblt_pixels_block_2colors(vd, pattern_2colors, fg, bg,
775 x, y, vf->vf_height);
777 vga_bitblt_pixels_block_ncolors(vd, pattern_ncolors,
778 x, y, vf->vf_height);
782 vga_bitblt_text_gfxmode(struct vt_device *vd, const struct vt_window *vw,
783 const term_rect_t *area)
785 const struct vt_font *vf;
786 unsigned int col, row;
787 unsigned int x1, y1, x2, y2, x, y;
792 * Compute the top-left pixel position aligned with the video
793 * adapter pixels block size.
795 * This is calculated from the top-left column of te dirty area:
797 * 1. Compute the top-left pixel of the character:
798 * col * font width + x offset
800 * NOTE: x offset is used to center the text area on the
801 * screen. It's expressed in pixels, not in characters
804 * 2. Find the pixel further on the left marking the start of
805 * an aligned pixels block (eg. chunk of 8 pixels):
806 * character's x / blocksize * blocksize
808 * The division, being made on integers, achieves the
811 * For the Y-axis, we need to compute the character's y
812 * coordinate, but we don't need to align it.
815 col = area->tr_begin.tp_col;
816 row = area->tr_begin.tp_row;
817 x1 = (int)((col * vf->vf_width + vw->vw_draw_area.tr_begin.tp_col)
818 / VT_VGA_PIXELS_BLOCK)
819 * VT_VGA_PIXELS_BLOCK;
820 y1 = row * vf->vf_height + vw->vw_draw_area.tr_begin.tp_row;
823 * Compute the bottom right pixel position, again, aligned with
824 * the pixels block size.
826 * The same rules apply, we just add 1 to base the computation
827 * on the "right border" of the dirty area.
830 col = area->tr_end.tp_col;
831 row = area->tr_end.tp_row;
832 x2 = (int)howmany(col * vf->vf_width + vw->vw_draw_area.tr_begin.tp_col,
834 * VT_VGA_PIXELS_BLOCK;
835 y2 = row * vf->vf_height + vw->vw_draw_area.tr_begin.tp_row;
837 /* Clip the area to the screen size. */
838 x2 = min(x2, vw->vw_draw_area.tr_end.tp_col);
839 y2 = min(y2, vw->vw_draw_area.tr_end.tp_row);
842 * Now, we take care of N pixels line at a time (the first for
843 * loop, N = font height), and for these lines, draw one pixels
844 * block at a time (the second for loop), not a character at a
847 * Therefore, on the X-axis, characters my be drawn partially if
848 * they are not aligned on 8-pixels boundary.
850 * However, the operation is repeated for the full height of the
851 * font before moving to the next character, because it allows
852 * to keep the color settings and write mode, before perhaps
853 * changing them with the next one.
856 for (y = y1; y < y2; y += vf->vf_height) {
857 for (x = x1; x < x2; x += VT_VGA_PIXELS_BLOCK) {
858 vga_bitblt_one_text_pixels_block(vd, vw, x, y);
864 vga_bitblt_text_txtmode(struct vt_device *vd, const struct vt_window *vw,
865 const term_rect_t *area)
867 struct vga_softc *sc;
868 const struct vt_buf *vb;
869 unsigned int col, row;
878 for (row = area->tr_begin.tp_row; row < area->tr_end.tp_row; ++row) {
879 for (col = area->tr_begin.tp_col;
880 col < area->tr_end.tp_col;
883 * Get next character and its associated fg/bg
886 c = VTBUF_GET_FIELD(vb, row, col);
887 vt_determine_colors(c, VTBUF_ISCURSOR(vb, row, col),
890 z = row * PIXEL_WIDTH(VT_FB_MAX_WIDTH) + col;
891 if (vd->vd_drawn && (vd->vd_drawn[z] == c) &&
892 vd->vd_drawnfg && (vd->vd_drawnfg[z] == fg) &&
893 vd->vd_drawnbg && (vd->vd_drawnbg[z] == bg))
897 * Convert character to CP437, which is the
898 * character set used by the VGA hardware by
901 ch = vga_get_cp437(TCHAR_CHARACTER(c));
903 /* Convert colors to VGA attributes. */
905 cons_to_vga_colors[bg] << 4 |
906 cons_to_vga_colors[fg];
908 MEM_WRITE2(sc, (row * 80 + col) * 2 + 0,
909 ch + ((uint16_t)(attr) << 8));
914 vd->vd_drawnfg[z] = fg;
916 vd->vd_drawnbg[z] = bg;
922 vga_bitblt_text(struct vt_device *vd, const struct vt_window *vw,
923 const term_rect_t *area)
926 if (!(vd->vd_flags & VDF_TEXTMODE)) {
927 vga_bitblt_text_gfxmode(vd, vw, area);
929 vga_bitblt_text_txtmode(vd, vw, area);
934 vga_invalidate_text(struct vt_device *vd, const term_rect_t *area)
936 unsigned int col, row;
939 for (row = area->tr_begin.tp_row; row < area->tr_end.tp_row; ++row) {
940 for (col = area->tr_begin.tp_col;
941 col < area->tr_end.tp_col;
943 z = row * PIXEL_WIDTH(VT_FB_MAX_WIDTH) + col;
947 vd->vd_drawnfg[z] = 0;
949 vd->vd_drawnbg[z] = 0;
955 vga_bitblt_bitmap(struct vt_device *vd, const struct vt_window *vw,
956 const uint8_t *pattern, const uint8_t *mask,
957 unsigned int width, unsigned int height,
958 unsigned int x, unsigned int y, term_color_t fg, term_color_t bg)
960 unsigned int x1, y1, x2, y2, i, j, src_x, dst_x, x_count;
961 uint8_t pattern_2colors;
963 /* Align coordinates with the 8-pxels grid. */
964 x1 = rounddown(x, VT_VGA_PIXELS_BLOCK);
967 x2 = roundup(x + width, VT_VGA_PIXELS_BLOCK);
969 x2 = min(x2, vd->vd_width - 1);
970 y2 = min(y2, vd->vd_height - 1);
972 for (j = y1; j < y2; ++j) {
975 x_count = VT_VGA_PIXELS_BLOCK - dst_x;
977 for (i = x1; i < x2; i += VT_VGA_PIXELS_BLOCK) {
980 vga_copy_bitmap_portion(
981 &pattern_2colors, NULL,
982 pattern, mask, width,
983 src_x, dst_x, x_count,
984 j - y1, 0, 1, fg, bg, 0);
986 vga_bitblt_pixels_block_2colors(vd,
987 &pattern_2colors, fg, bg,
991 dst_x = (dst_x + x_count) % VT_VGA_PIXELS_BLOCK;
992 x_count = min(width - src_x, VT_VGA_PIXELS_BLOCK);
998 vga_initialize_graphics(struct vt_device *vd)
1000 struct vga_softc *sc = vd->vd_softc;
1003 REG_WRITE1(sc, VGA_GEN_MISC_OUTPUT_W, VGA_GEN_MO_VSP | VGA_GEN_MO_HSP |
1004 VGA_GEN_MO_PB | VGA_GEN_MO_ER | VGA_GEN_MO_IOA);
1005 /* Set sequencer clocking and memory mode. */
1006 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_CLOCKING_MODE);
1007 REG_WRITE1(sc, VGA_SEQ_DATA, VGA_SEQ_CM_89);
1008 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_MEMORY_MODE);
1009 REG_WRITE1(sc, VGA_SEQ_DATA, VGA_SEQ_MM_OE | VGA_SEQ_MM_EM);
1011 /* Set the graphics controller in graphics mode. */
1012 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_MISCELLANEOUS);
1013 REG_WRITE1(sc, VGA_GC_DATA, 0x04 + VGA_GC_MISC_GA);
1014 /* Program the CRT controller. */
1015 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_HORIZ_TOTAL);
1016 REG_WRITE1(sc, VGA_CRTC_DATA, 0x5f); /* 760 */
1017 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_HORIZ_DISP_END);
1018 REG_WRITE1(sc, VGA_CRTC_DATA, 0x4f); /* 640 - 8 */
1019 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_START_HORIZ_BLANK);
1020 REG_WRITE1(sc, VGA_CRTC_DATA, 0x50); /* 640 */
1021 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_END_HORIZ_BLANK);
1022 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_EHB_CR + 2);
1023 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_START_HORIZ_RETRACE);
1024 REG_WRITE1(sc, VGA_CRTC_DATA, 0x54); /* 672 */
1025 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_END_HORIZ_RETRACE);
1026 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_EHR_EHB + 0);
1027 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_VERT_TOTAL);
1028 REG_WRITE1(sc, VGA_CRTC_DATA, 0x0b); /* 523 */
1029 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_OVERFLOW);
1030 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_OF_VT9 | VGA_CRTC_OF_LC8 |
1031 VGA_CRTC_OF_VBS8 | VGA_CRTC_OF_VRS8 | VGA_CRTC_OF_VDE8);
1032 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_MAX_SCAN_LINE);
1033 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_MSL_LC9);
1034 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_VERT_RETRACE_START);
1035 REG_WRITE1(sc, VGA_CRTC_DATA, 0xea); /* 480 + 10 */
1036 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_VERT_RETRACE_END);
1037 REG_WRITE1(sc, VGA_CRTC_DATA, 0x0c);
1038 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_VERT_DISPLAY_END);
1039 REG_WRITE1(sc, VGA_CRTC_DATA, 0xdf); /* 480 - 1*/
1040 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_OFFSET);
1041 REG_WRITE1(sc, VGA_CRTC_DATA, 0x28);
1042 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_START_VERT_BLANK);
1043 REG_WRITE1(sc, VGA_CRTC_DATA, 0xe7); /* 480 + 7 */
1044 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_END_VERT_BLANK);
1045 REG_WRITE1(sc, VGA_CRTC_DATA, 0x04);
1046 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_MODE_CONTROL);
1047 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_MC_WB | VGA_CRTC_MC_AW |
1048 VGA_CRTC_MC_SRS | VGA_CRTC_MC_CMS);
1049 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_LINE_COMPARE);
1050 REG_WRITE1(sc, VGA_CRTC_DATA, 0xff); /* 480 + 31 */
1052 REG_WRITE1(sc, VGA_GEN_FEATURE_CTRL_W, 0);
1054 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_MAP_MASK);
1055 REG_WRITE1(sc, VGA_SEQ_DATA, VGA_SEQ_MM_EM3 | VGA_SEQ_MM_EM2 |
1056 VGA_SEQ_MM_EM1 | VGA_SEQ_MM_EM0);
1057 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_CHAR_MAP_SELECT);
1058 REG_WRITE1(sc, VGA_SEQ_DATA, 0);
1060 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_SET_RESET);
1061 REG_WRITE1(sc, VGA_GC_DATA, 0);
1062 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_ENABLE_SET_RESET);
1063 REG_WRITE1(sc, VGA_GC_DATA, 0x0f);
1064 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_COLOR_COMPARE);
1065 REG_WRITE1(sc, VGA_GC_DATA, 0);
1066 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_DATA_ROTATE);
1067 REG_WRITE1(sc, VGA_GC_DATA, 0);
1068 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_READ_MAP_SELECT);
1069 REG_WRITE1(sc, VGA_GC_DATA, 0);
1070 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_MODE);
1071 REG_WRITE1(sc, VGA_GC_DATA, 0);
1072 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_COLOR_DONT_CARE);
1073 REG_WRITE1(sc, VGA_GC_DATA, 0x0f);
1074 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_BIT_MASK);
1075 REG_WRITE1(sc, VGA_GC_DATA, 0xff);
1079 vga_initialize(struct vt_device *vd, int textmode)
1081 struct vga_softc *sc = vd->vd_softc;
1085 /* Make sure the VGA adapter is not in monochrome emulation mode. */
1086 x = REG_READ1(sc, VGA_GEN_MISC_OUTPUT_R);
1087 REG_WRITE1(sc, VGA_GEN_MISC_OUTPUT_W, x | VGA_GEN_MO_IOA);
1089 /* Unprotect CRTC registers 0-7. */
1090 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_VERT_RETRACE_END);
1091 x = REG_READ1(sc, VGA_CRTC_DATA);
1092 REG_WRITE1(sc, VGA_CRTC_DATA, x & ~VGA_CRTC_VRE_PR);
1095 * Wait for the vertical retrace.
1096 * NOTE: this code reads the VGA_GEN_INPUT_STAT_1 register, which has
1097 * the side-effect of clearing the internal flip-flip of the attribute
1098 * controller's write register. This means that because this code is
1099 * here, we know for sure that the first write to the attribute
1100 * controller will be a write to the address register. Removing this
1101 * code therefore also removes that guarantee and appropriate measures
1107 x = REG_READ1(sc, VGA_GEN_INPUT_STAT_1);
1108 x &= VGA_GEN_IS1_VR | VGA_GEN_IS1_DE;
1109 } while (x != (VGA_GEN_IS1_VR | VGA_GEN_IS1_DE) && --timeout != 0);
1111 printf("Timeout initializing vt_vga\n");
1115 /* Now, disable the sync. signals. */
1116 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_MODE_CONTROL);
1117 x = REG_READ1(sc, VGA_CRTC_DATA);
1118 REG_WRITE1(sc, VGA_CRTC_DATA, x & ~VGA_CRTC_MC_HR);
1120 /* Asynchronous sequencer reset. */
1121 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_RESET);
1122 REG_WRITE1(sc, VGA_SEQ_DATA, VGA_SEQ_RST_SR);
1125 vga_initialize_graphics(vd);
1127 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_PRESET_ROW_SCAN);
1128 REG_WRITE1(sc, VGA_CRTC_DATA, 0);
1129 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_CURSOR_START);
1130 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_CS_COO);
1131 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_CURSOR_END);
1132 REG_WRITE1(sc, VGA_CRTC_DATA, 0);
1133 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_START_ADDR_HIGH);
1134 REG_WRITE1(sc, VGA_CRTC_DATA, 0);
1135 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_START_ADDR_LOW);
1136 REG_WRITE1(sc, VGA_CRTC_DATA, 0);
1137 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_CURSOR_LOC_HIGH);
1138 REG_WRITE1(sc, VGA_CRTC_DATA, 0);
1139 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_CURSOR_LOC_LOW);
1140 REG_WRITE1(sc, VGA_CRTC_DATA, 0x59);
1141 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_UNDERLINE_LOC);
1142 REG_WRITE1(sc, VGA_CRTC_DATA, VGA_CRTC_UL_UL);
1145 /* Set the attribute controller to blink disable. */
1146 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_MODE_CONTROL);
1147 REG_WRITE1(sc, VGA_AC_WRITE, 0);
1149 /* Set the attribute controller in graphics mode. */
1150 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_MODE_CONTROL);
1151 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_MC_GA);
1152 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_HORIZ_PIXEL_PANNING);
1153 REG_WRITE1(sc, VGA_AC_WRITE, 0);
1155 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(0));
1156 REG_WRITE1(sc, VGA_AC_WRITE, 0);
1157 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(1));
1158 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_B);
1159 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(2));
1160 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_G);
1161 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(3));
1162 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_G | VGA_AC_PAL_B);
1163 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(4));
1164 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_R);
1165 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(5));
1166 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_R | VGA_AC_PAL_B);
1167 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(6));
1168 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SG | VGA_AC_PAL_R);
1169 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(7));
1170 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_R | VGA_AC_PAL_G | VGA_AC_PAL_B);
1172 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(8));
1173 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1175 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(9));
1176 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1177 VGA_AC_PAL_SB | VGA_AC_PAL_B);
1178 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(10));
1179 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1180 VGA_AC_PAL_SB | VGA_AC_PAL_G);
1181 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(11));
1182 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1183 VGA_AC_PAL_SB | VGA_AC_PAL_G | VGA_AC_PAL_B);
1184 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(12));
1185 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1186 VGA_AC_PAL_SB | VGA_AC_PAL_R);
1187 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(13));
1188 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1189 VGA_AC_PAL_SB | VGA_AC_PAL_R | VGA_AC_PAL_B);
1190 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(14));
1191 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1192 VGA_AC_PAL_SB | VGA_AC_PAL_R | VGA_AC_PAL_G);
1193 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PALETTE(15));
1194 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_PAL_SR | VGA_AC_PAL_SG |
1195 VGA_AC_PAL_SB | VGA_AC_PAL_R | VGA_AC_PAL_G | VGA_AC_PAL_B);
1197 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_OVERSCAN_COLOR);
1198 REG_WRITE1(sc, VGA_AC_WRITE, 0);
1199 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_COLOR_PLANE_ENABLE);
1200 REG_WRITE1(sc, VGA_AC_WRITE, 0x0f);
1201 REG_WRITE1(sc, VGA_AC_WRITE, VGA_AC_COLOR_SELECT);
1202 REG_WRITE1(sc, VGA_AC_WRITE, 0);
1208 * Done. Clear the frame buffer. All bit planes are
1209 * enabled, so a single-paged loop should clear all
1212 for (ofs = 0; ofs < VT_VGA_MEMSIZE; ofs++) {
1213 MEM_WRITE1(sc, ofs, 0);
1217 /* Re-enable the sequencer. */
1218 REG_WRITE1(sc, VGA_SEQ_ADDRESS, VGA_SEQ_RESET);
1219 REG_WRITE1(sc, VGA_SEQ_DATA, VGA_SEQ_RST_SR | VGA_SEQ_RST_NAR);
1220 /* Re-enable the sync signals. */
1221 REG_WRITE1(sc, VGA_CRTC_ADDRESS, VGA_CRTC_MODE_CONTROL);
1222 x = REG_READ1(sc, VGA_CRTC_DATA);
1223 REG_WRITE1(sc, VGA_CRTC_DATA, x | VGA_CRTC_MC_HR);
1226 /* Switch to write mode 3, because we'll mainly do bitblt. */
1227 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_MODE);
1228 REG_WRITE1(sc, VGA_GC_DATA, 3);
1232 * In Write Mode 3, Enable Set/Reset is ignored, but we
1233 * use Write Mode 0 to write a group of 8 pixels using
1234 * 3 or more colors. In this case, we want to disable
1235 * Set/Reset: set Enable Set/Reset to 0.
1237 REG_WRITE1(sc, VGA_GC_ADDRESS, VGA_GC_ENABLE_SET_RESET);
1238 REG_WRITE1(sc, VGA_GC_DATA, 0x00);
1241 * Clear the colors we think are loaded into Set/Reset or
1244 sc->vga_curfg = sc->vga_curbg = 0xff;
1251 vga_acpi_disabled(void)
1253 #if defined(__amd64__) || defined(__i386__)
1258 TUNABLE_INT_FETCH("hw.vga.acpi_ignore_no_vga", &ignore);
1259 if (ignore || !acpi_get_fadt_bootflags(&flags))
1261 return ((flags & ACPI_FADT_NO_VGA) != 0);
1268 vga_probe(struct vt_device *vd)
1271 return (vga_acpi_disabled() ? CN_DEAD : CN_INTERNAL);
1275 vga_init(struct vt_device *vd)
1277 struct vga_softc *sc;
1280 if (vd->vd_softc == NULL)
1281 vd->vd_softc = (void *)&vga_conssoftc;
1284 if (vd->vd_flags & VDF_DOWNGRADE && vd->vd_video_dev != NULL)
1285 vga_pci_repost(vd->vd_video_dev);
1287 #if defined(__amd64__) || defined(__i386__)
1288 sc->vga_fb_tag = X86_BUS_SPACE_MEM;
1289 sc->vga_reg_tag = X86_BUS_SPACE_IO;
1291 # error "Architecture not yet supported!"
1294 bus_space_map(sc->vga_reg_tag, VGA_REG_BASE, VGA_REG_SIZE, 0,
1295 &sc->vga_reg_handle);
1298 * If "hw.vga.textmode" is not set and we're running on hypervisor,
1299 * we use text mode by default, this is because when we're on
1300 * hypervisor, vt(4) is usually much slower in graphics mode than
1301 * in text mode, especially when we're on Hyper-V.
1303 textmode = vm_guest != VM_GUEST_NO;
1304 TUNABLE_INT_FETCH("hw.vga.textmode", &textmode);
1306 vd->vd_flags |= VDF_TEXTMODE;
1309 bus_space_map(sc->vga_fb_tag, VGA_TXT_BASE, VGA_TXT_SIZE, 0,
1310 &sc->vga_fb_handle);
1312 vd->vd_width = VT_VGA_WIDTH;
1313 vd->vd_height = VT_VGA_HEIGHT;
1314 bus_space_map(sc->vga_fb_tag, VGA_MEM_BASE, VGA_MEM_SIZE, 0,
1315 &sc->vga_fb_handle);
1317 if (vga_initialize(vd, textmode) != 0)
1319 sc->vga_enabled = true;
1321 return (CN_INTERNAL);
1325 vga_postswitch(struct vt_device *vd)
1328 /* Reinit VGA mode, to restore view after app which change mode. */
1329 vga_initialize(vd, (vd->vd_flags & VDF_TEXTMODE));
1330 /* Ask vt(9) to update chars on visible area. */
1331 vd->vd_flags |= VDF_INVALID;
1334 /* Dummy NewBus functions to reserve the resources used by the vt_vga driver */
1336 vtvga_identify(driver_t *driver, device_t parent)
1339 if (!vga_conssoftc.vga_enabled)
1342 if (BUS_ADD_CHILD(parent, 0, driver->name, 0) == NULL)
1343 panic("Unable to attach vt_vga console");
1347 vtvga_probe(device_t dev)
1350 device_set_desc(dev, "VT VGA driver");
1352 return (BUS_PROBE_NOWILDCARD);
1356 vtvga_attach(device_t dev)
1358 struct resource *pseudo_phys_res;
1362 pseudo_phys_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
1363 &res_id, VGA_MEM_BASE, VGA_MEM_BASE + VGA_MEM_SIZE - 1,
1364 VGA_MEM_SIZE, RF_ACTIVE);
1365 if (pseudo_phys_res == NULL)
1366 panic("Unable to reserve vt_vga memory");
1370 /*-------------------- Private Device Attachment Data -----------------------*/
1371 static device_method_t vtvga_methods[] = {
1372 /* Device interface */
1373 DEVMETHOD(device_identify, vtvga_identify),
1374 DEVMETHOD(device_probe, vtvga_probe),
1375 DEVMETHOD(device_attach, vtvga_attach),
1380 DEFINE_CLASS_0(vtvga, vtvga_driver, vtvga_methods, 0);
1381 devclass_t vtvga_devclass;
1383 DRIVER_MODULE(vtvga, nexus, vtvga_driver, vtvga_devclass, NULL, NULL);