scvtb.c revision 78956
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/dev/syscons/scvtb.c 78956 2001-06-29 08:24:56Z yokota $ 27 */ 28 29#include "opt_syscons.h" 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/malloc.h> 34#include <sys/fbio.h> 35#include <sys/consio.h> 36 37#include <machine/md_var.h> 38#include <machine/bus.h> 39 40#include <dev/fb/fbreg.h> 41#include <dev/syscons/syscons.h> 42 43#define vtb_wrap(vtb, at, offset) \ 44 (((at) + (offset) + (vtb)->vtb_size)%(vtb)->vtb_size) 45 46void 47sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows, void *buf, int wait) 48{ 49 vtb->vtb_flags = 0; 50 vtb->vtb_type = type; 51 vtb->vtb_cols = cols; 52 vtb->vtb_rows = rows; 53 vtb->vtb_size = cols*rows; 54 vtb->vtb_buffer = NULL; 55 vtb->vtb_tail = 0; 56 57 switch (type) { 58 case VTB_MEMORY: 59 case VTB_RINGBUFFER: 60 if ((buf == NULL) && (cols*rows != 0)) { 61 vtb->vtb_buffer = 62 (vm_offset_t)malloc(cols*rows*sizeof(u_int16_t), 63 M_DEVBUF, 64 (wait) ? M_WAITOK : M_NOWAIT); 65 if (vtb->vtb_buffer != NULL) { 66 bzero((void *)sc_vtb_pointer(vtb, 0), 67 cols*rows*sizeof(u_int16_t)); 68 vtb->vtb_flags |= VTB_ALLOCED; 69 } 70 } else { 71 vtb->vtb_buffer = (vm_offset_t)buf; 72 } 73 vtb->vtb_flags |= VTB_VALID; 74 break; 75 case VTB_FRAMEBUFFER: 76 vtb->vtb_buffer = (vm_offset_t)buf; 77 vtb->vtb_flags |= VTB_VALID; 78 break; 79 default: 80 break; 81 } 82} 83 84void 85sc_vtb_destroy(sc_vtb_t *vtb) 86{ 87 vm_offset_t p; 88 89 vtb->vtb_cols = 0; 90 vtb->vtb_rows = 0; 91 vtb->vtb_size = 0; 92 vtb->vtb_tail = 0; 93 94 p = vtb->vtb_buffer; 95 vtb->vtb_buffer = NULL; 96 switch (vtb->vtb_type) { 97 case VTB_MEMORY: 98 case VTB_RINGBUFFER: 99 if ((vtb->vtb_flags & VTB_ALLOCED) && (p != NULL)) 100 free((void *)p, M_DEVBUF); 101 break; 102 default: 103 break; 104 } 105 vtb->vtb_flags = 0; 106 vtb->vtb_type = VTB_INVALID; 107} 108 109size_t 110sc_vtb_size(int cols, int rows) 111{ 112 return (size_t)(cols*rows*sizeof(u_int16_t)); 113} 114 115int 116sc_vtb_getc(sc_vtb_t *vtb, int at) 117{ 118 if (vtb->vtb_type == VTB_FRAMEBUFFER) 119 return (readw(sc_vtb_pointer(vtb, at)) & 0x00ff); 120 else 121 return (*(u_int16_t *)sc_vtb_pointer(vtb, at) & 0x00ff); 122} 123 124int 125sc_vtb_geta(sc_vtb_t *vtb, int at) 126{ 127 if (vtb->vtb_type == VTB_FRAMEBUFFER) 128 return (readw(sc_vtb_pointer(vtb, at)) & 0xff00); 129 else 130 return (*(u_int16_t *)sc_vtb_pointer(vtb, at) & 0xff00); 131} 132 133void 134sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a) 135{ 136 if (vtb->vtb_type == VTB_FRAMEBUFFER) 137 writew(sc_vtb_pointer(vtb, at), a | c); 138 else 139 *(u_int16_t *)sc_vtb_pointer(vtb, at) = a | c; 140} 141 142vm_offset_t 143sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a) 144{ 145 if (vtb->vtb_type == VTB_FRAMEBUFFER) 146 writew(p, a | c); 147 else 148 *(u_int16_t *)p = a | c; 149 return (p + sizeof(u_int16_t)); 150} 151 152vm_offset_t 153sc_vtb_pointer(sc_vtb_t *vtb, int at) 154{ 155 return (vtb->vtb_buffer + sizeof(u_int16_t)*(at)); 156} 157 158int 159sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset) 160{ 161 return ((pos + offset + vtb->vtb_size)%vtb->vtb_size); 162} 163 164void 165sc_vtb_clear(sc_vtb_t *vtb, int c, int attr) 166{ 167 if (vtb->vtb_type == VTB_FRAMEBUFFER) 168 fillw_io(attr | c, sc_vtb_pointer(vtb, 0), vtb->vtb_size); 169 else 170 fillw(attr | c, (void *)sc_vtb_pointer(vtb, 0), vtb->vtb_size); 171} 172 173void 174sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to, int count) 175{ 176 /* XXX if both are VTB_VRAMEBUFFER... */ 177 if (vtb2->vtb_type == VTB_FRAMEBUFFER) { 178 bcopy_toio(sc_vtb_pointer(vtb1, from), 179 sc_vtb_pointer(vtb2, to), 180 count*sizeof(u_int16_t)); 181 } else if (vtb1->vtb_type == VTB_FRAMEBUFFER) { 182 bcopy_fromio(sc_vtb_pointer(vtb1, from), 183 sc_vtb_pointer(vtb2, to), 184 count*sizeof(u_int16_t)); 185 } else { 186 bcopy((void *)sc_vtb_pointer(vtb1, from), 187 (void *)sc_vtb_pointer(vtb2, to), 188 count*sizeof(u_int16_t)); 189 } 190} 191 192void 193sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int count) 194{ 195 int len; 196 197 if (vtb2->vtb_type != VTB_RINGBUFFER) 198 return; 199 200 while (count > 0) { 201 len = imin(count, vtb2->vtb_size - vtb2->vtb_tail); 202 if (vtb1->vtb_type == VTB_FRAMEBUFFER) { 203 bcopy_fromio(sc_vtb_pointer(vtb1, from), 204 sc_vtb_pointer(vtb2, vtb2->vtb_tail), 205 len*sizeof(u_int16_t)); 206 } else { 207 bcopy((void *)sc_vtb_pointer(vtb1, from), 208 (void *)sc_vtb_pointer(vtb2, vtb2->vtb_tail), 209 len*sizeof(u_int16_t)); 210 } 211 from += len; 212 count -= len; 213 vtb2->vtb_tail = vtb_wrap(vtb2, vtb2->vtb_tail, len); 214 } 215} 216 217void 218sc_vtb_seek(sc_vtb_t *vtb, int pos) 219{ 220 vtb->vtb_tail = pos%vtb->vtb_size; 221} 222 223void 224sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr) 225{ 226 if (at + count > vtb->vtb_size) 227 count = vtb->vtb_size - at; 228 if (vtb->vtb_type == VTB_FRAMEBUFFER) 229 fillw_io(attr | c, sc_vtb_pointer(vtb, at), count); 230 else 231 fillw(attr | c, (void *)sc_vtb_pointer(vtb, at), count); 232} 233 234void 235sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count) 236{ 237 if (from + count > vtb->vtb_size) 238 count = vtb->vtb_size - from; 239 if (to + count > vtb->vtb_size) 240 count = vtb->vtb_size - to; 241 if (count <= 0) 242 return; 243 if (vtb->vtb_type == VTB_FRAMEBUFFER) { 244 bcopy_io(sc_vtb_pointer(vtb, from), 245 sc_vtb_pointer(vtb, to), count*sizeof(u_int16_t)); 246 } else { 247 bcopy((void *)sc_vtb_pointer(vtb, from), 248 (void *)sc_vtb_pointer(vtb, to), count*sizeof(u_int16_t)); 249 } 250} 251 252void 253sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr) 254{ 255 int len; 256 257 if (at + count > vtb->vtb_size) 258 count = vtb->vtb_size - at; 259 len = vtb->vtb_size - at - count; 260 if (len > 0) { 261 if (vtb->vtb_type == VTB_FRAMEBUFFER) { 262 bcopy_io(sc_vtb_pointer(vtb, at + count), 263 sc_vtb_pointer(vtb, at), 264 len*sizeof(u_int16_t)); 265 } else { 266 bcopy((void *)sc_vtb_pointer(vtb, at + count), 267 (void *)sc_vtb_pointer(vtb, at), 268 len*sizeof(u_int16_t)); 269 } 270 } 271 if (vtb->vtb_type == VTB_FRAMEBUFFER) 272 fillw_io(attr | c, sc_vtb_pointer(vtb, at + len), 273 vtb->vtb_size - at - len); 274 else 275 fillw(attr | c, (void *)sc_vtb_pointer(vtb, at + len), 276 vtb->vtb_size - at - len); 277} 278 279void 280sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr) 281{ 282 if (at + count > vtb->vtb_size) { 283 count = vtb->vtb_size - at; 284 } else { 285 if (vtb->vtb_type == VTB_FRAMEBUFFER) { 286 bcopy_io(sc_vtb_pointer(vtb, at), 287 sc_vtb_pointer(vtb, at + count), 288 (vtb->vtb_size - at - count)*sizeof(u_int16_t)); 289 } else { 290 bcopy((void *)sc_vtb_pointer(vtb, at), 291 (void *)sc_vtb_pointer(vtb, at + count), 292 (vtb->vtb_size - at - count)*sizeof(u_int16_t)); 293 } 294 } 295 if (vtb->vtb_type == VTB_FRAMEBUFFER) 296 fillw_io(attr | c, sc_vtb_pointer(vtb, at), count); 297 else 298 fillw(attr | c, (void *)sc_vtb_pointer(vtb, at), count); 299} 300