vt_fb.c revision 258781
1/*- 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Aleksandr Rybalko under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: user/ed/newcons/sys/dev/vt/hw/fb/vt_fb.c 258781 2013-11-30 22:46:43Z nwhitehorn $ 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: user/ed/newcons/sys/dev/vt/hw/fb/vt_fb.c 258781 2013-11-30 22:46:43Z nwhitehorn $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/malloc.h> 38#include <sys/queue.h> 39#include <sys/fbio.h> 40#include <dev/vt/vt.h> 41#include <dev/vt/hw/fb/vt_fb.h> 42#include <dev/vt/colors/vt_termcolors.h> 43 44static struct vt_driver vt_fb_driver = { 45 .vd_init = vt_fb_init, 46 .vd_blank = vt_fb_blank, 47 .vd_bitbltchr = vt_fb_bitbltchr, 48 .vd_postswitch = vt_fb_postswitch, 49 .vd_priority = VD_PRIORITY_GENERIC+10, 50}; 51 52void 53vt_fb_blank(struct vt_device *vd, term_color_t color) 54{ 55 struct fb_info *info; 56 uint32_t c; 57 u_int o; 58 59 info = vd->vd_softc; 60 c = info->fb_cmap[color]; 61 62 switch (FBTYPE_GET_BYTESPP(info)) { 63 case 1: 64 for (o = 0; o < info->fb_stride; o++) 65 info->wr1(info, o, c); 66 break; 67 case 2: 68 for (o = 0; o < info->fb_stride; o += 2) 69 info->wr2(info, o, c); 70 break; 71 case 3: 72 /* line 0 */ 73 for (o = 0; o < info->fb_stride; o += 3) { 74 info->wr1(info, o, (c >> 16) & 0xff); 75 info->wr1(info, o + 1, (c >> 8) & 0xff); 76 info->wr1(info, o + 2, c & 0xff); 77 } 78 break; 79 case 4: 80 for (o = 0; o < info->fb_stride; o += 4) 81 info->wr4(info, o, c); 82 break; 83 default: 84 /* panic? */ 85 return; 86 } 87 /* Copy line0 to all other lines. */ 88 /* XXX will copy with borders. */ 89 for (o = info->fb_stride; o < info->fb_size; o += info->fb_stride) { 90 info->copy(info, o, 0, info->fb_stride); 91 } 92} 93 94void 95vt_fb_bitbltchr(struct vt_device *vd, const uint8_t *src, const uint8_t *mask, 96 int bpl, vt_axis_t top, vt_axis_t left, unsigned int width, 97 unsigned int height, term_color_t fg, term_color_t bg) 98{ 99 struct fb_info *info; 100 uint32_t fgc, bgc, cc, o; 101 int c, l, bpp; 102 u_long line; 103 uint8_t b, m; 104 const uint8_t *ch; 105 106 info = vd->vd_softc; 107 bpp = FBTYPE_GET_BYTESPP(info); 108 fgc = info->fb_cmap[fg]; 109 bgc = info->fb_cmap[bg]; 110 b = m = 0; 111 if (bpl == 0) 112 bpl = (width + 7) >> 3; /* Bytes per sorce line. */ 113 114 /* Don't try to put off screen pixels */ 115 if (((left + width) > info->fb_width) || ((top + height) > 116 info->fb_height)) 117 return; 118 119 line = (info->fb_stride * top) + (left * bpp); 120 for (l = 0; l < height; l++) { 121 ch = src; 122 for (c = 0; c < width; c++) { 123 if (c % 8 == 0) 124 b = *ch++; 125 else 126 b <<= 1; 127 if (mask != NULL) { 128 if (c % 8 == 0) 129 m = *mask++; 130 else 131 m <<= 1; 132 /* Skip pixel write, if mask has no bit set. */ 133 if ((m & 0x80) == 0) 134 continue; 135 } 136 o = line + (c * bpp); 137 cc = b & 0x80 ? fgc : bgc; 138 139 switch(bpp) { 140 case 1: 141 info->wr1(info, o, cc); 142 break; 143 case 2: 144 info->wr2(info, o, cc); 145 break; 146 case 3: 147 /* Packed mode, so unaligned. Byte access. */ 148 info->wr1(info, o, (cc >> 16) & 0xff); 149 info->wr1(info, o + 1, (cc >> 8) & 0xff); 150 info->wr1(info, o + 2, cc & 0xff); 151 break; 152 case 4: 153 info->wr4(info, o, cc); 154 break; 155 default: 156 /* panic? */ 157 break; 158 } 159 } 160 line += info->fb_stride; 161 src += bpl; 162 } 163} 164 165void 166vt_fb_postswitch(struct vt_device *vd) 167{ 168 struct fb_info *info; 169 170 info = vd->vd_softc; 171 172 if (info->enter != NULL) 173 info->enter(info->fb_priv); 174} 175 176static int 177vt_fb_init_cmap(uint32_t *cmap, int depth) 178{ 179 180 switch (depth) { 181 case 8: 182 return (vt_generate_vga_palette(cmap, COLOR_FORMAT_RGB, 183 0x7, 5, 0x7, 2, 0x3, 0)); 184 case 15: 185 return (vt_generate_vga_palette(cmap, COLOR_FORMAT_RGB, 186 0x1f, 10, 0x1f, 5, 0x1f, 0)); 187 case 16: 188 return (vt_generate_vga_palette(cmap, COLOR_FORMAT_RGB, 189 0x1f, 11, 0x3f, 5, 0x1f, 0)); 190 case 24: 191 case 32: /* Ignore alpha. */ 192 return (vt_generate_vga_palette(cmap, COLOR_FORMAT_RGB, 193 0xff, 0, 0xff, 8, 0xff, 16)); 194 default: 195 return (1); 196 } 197} 198 199int 200vt_fb_init(struct vt_device *vd) 201{ 202 struct fb_info *info; 203 int err; 204 205 info = vd->vd_softc; 206 vd->vd_height = info->fb_height; 207 vd->vd_width = info->fb_width; 208 209 if (info->fb_cmsize <= 0) { 210 err = vt_fb_init_cmap(info->fb_cmap, FBTYPE_GET_BPP(info)); 211 if (err) 212 return (CN_DEAD); 213 info->fb_cmsize = 16; 214 } 215 216 /* Clear the screen. */ 217 vt_fb_blank(vd, TC_BLACK); 218 219 /* Wakeup screen. KMS need this. */ 220 vt_fb_postswitch(vd); 221 222 return (CN_INTERNAL); 223} 224 225int 226vt_fb_attach(struct fb_info *info) 227{ 228 229 vt_allocate(&vt_fb_driver, info); 230 231 return (0); 232} 233 234void 235vt_fb_resume(void) 236{ 237 238 vt_resume(); 239} 240 241void 242vt_fb_suspend(void) 243{ 244 245 vt_suspend(); 246} 247