drivers/video/dn_cfb8.c

   1 #include <linux/kernel.h>
   2 #include <linux/errno.h>
   3 #include <linux/string.h>
   4 #include <linux/mm.h>
   5 #include <linux/tty.h>
   6 #include <linux/slab.h>
   7 #include <linux/delay.h>
   8 #include <linux/interrupt.h>
   9 #include <asm/setup.h>
  10 #include <asm/segment.h>
  11 #include <asm/system.h>
  12 #include <asm/irq.h>
  13 #include <asm/amigahw.h>
  14 #include <asm/amigaints.h>
  15 #include <asm/apollohw.h>
  16 #include <linux/fb.h>
  17 #include <linux/module.h>
  18 #include "dn_accel.h"
  19 #include "fbcon.h"
  20 #include "fbcon-mfb.h"
  21
  22 /* apollo video HW definitions */
  23
  24 /*
  25  * Control Registers.   IOBASE + $x
  26  *
  27  * Note: these are the Memory/IO BASE definitions for a mono card set to the
  28  * alternate address
  29  *
  30  * Control 3A and 3B serve identical functions except that 3A
  31  * deals with control 1 and 3b deals with Color LUT reg.
  32  */
  33
  34 #define AP_IOBASE       0x3d0          /* Base address of 1 plane board. */
  35 #define AP_STATUS       isaIO2mem(AP_IOBASE+0) /* Status register.  Read */
  36 #define AP_WRITE_ENABLE isaIO2mem(AP_IOBASE+0) /* Write Enable Register Write */
  37 #define AP_DEVICE_ID    isaIO2mem(AP_IOBASE+1) /* Device ID Register. Read */
  38 #define AP_ROP_0        isaIO2mem(AP_IOBASE+2) /* Raster Operation reg. Write Word */
  39 #define AP_ROP_1        isaIO2mem(AP_IOBASE+4) /* Raster Operation reg. Write Word */
  40 #define AP_DIAG_MEM_REQ isaIO2mem(AP_IOBASE+6) /* Diagnostic Memory Request. Write Word */
  41 #define AP_CONTROL_0    isaIO2mem(AP_IOBASE+8) /* Control Register 0.  Read/Write */
  42 #define AP_LUT_DATA     isaIO2mem(AP_IOBASE+9) /* Control Register 0.  Read/Write */
  43 #define AP_CONTROL_1    isaIO2mem(AP_IOBASE+0xa) /* Control Register 1.  Read/Write */
  44 #define AP_LUT_CONTROL  isaIO2mem(AP_IOBASE+0xb) /* Control Register 1.  Read/Write */
  45 #define AP_CONTROL_2A   isaIO2mem(AP_IOBASE+0xc) /* Control Register 2. Read/Write */
  46 #define AP_CONTROL_2B   isaIO2mem(AP_IOBASE+0xd) /* Control Register 2. Read/Write */
  47 #define AP_CONTROL_3A   isaIO2mem(AP_IOBASE+0xe) /* Control Register 3a. Read/Write */
  48 #define AP_CONTROL_3B   isaIO2mem(AP_IOBASE+0xf) /* Control Register 3a. Read/Write */
  49
  50
  51 #define FRAME_BUFFER_START 0x0A0000
  52 #define FRAME_BUFFER_LEN 0x20000
  53
  54 /* CREG 0 */
  55 #define VECTOR_MODE 0x40 /* 010x.xxxx */
  56 #define DBLT_MODE   0x80 /* 100x.xxxx */
  57 #define NORMAL_MODE 0xE0 /* 111x.xxxx */
  58 #define SHIFT_BITS  0x1F /* xxx1.1111 */
  59         /* other bits are Shift value */
  60
  61 /* CREG 1 */
  62 #define AD_BLT      0x80 /* 1xxx.xxxx */
  63
  64 #define ROP_EN          0x10 /* xxx1.xxxx */
  65 #define DST_EQ_SRC      0x00 /* xxx0.xxxx */
  66 #define nRESET_SYNC     0x08 /* xxxx.1xxx */
  67 #define SYNC_ENAB       0x02 /* xxxx.xx1x */
  68
  69 #define BLANK_DISP      0x00 /* xxxx.xxx0 */
  70 #define ENAB_DISP       0x01 /* xxxx.xxx1 */
  71
  72 #define NORM_CREG1      (nRESET_SYNC | SYNC_ENAB | ENAB_DISP) /* no reset sync */
  73
  74 /* CREG 2B */
  75
  76 /*
  77  * Following 3 defines are common to 1, 4 and 8 plane.
  78  */
  79
  80 #define S_DATA_1s   0x00 /* 00xx.xxxx */ /* set source to all 1's -- vector drawing */
  81 #define S_DATA_PIX  0x40 /* 01xx.xxxx */ /* takes source from ls-bits and replicates over 16 bits */
  82 #define S_DATA_PLN  0xC0 /* 11xx.xxxx */ /* normal, each data access =16-bits in
  83  one plane of image mem */
  84
  85 /* CREG 3A/CREG 3B */
  86 #       define RESET_CREG 0x80 /* 1000.0000 */
  87
  88 /* ROP REG  -  all one nibble */
  89 /*      ********* NOTE : this is used r0,r1,r2,r3 *********** */
  90 #define ROP(r2,r3,r0,r1) ( (U_SHORT)((r0)|((r1)<<4)|((r2)<<8)|((r3)<<12)) )
  91 #define DEST_ZERO               0x0
  92 #define SRC_AND_DEST    0x1
  93 #define SRC_AND_nDEST   0x2
  94 #define SRC                             0x3
  95 #define nSRC_AND_DEST   0x4
  96 #define DEST                    0x5
  97 #define SRC_XOR_DEST    0x6
  98 #define SRC_OR_DEST             0x7
  99 #define SRC_NOR_DEST    0x8
 100 #define SRC_XNOR_DEST   0x9
 101 #define nDEST                   0xA
 102 #define SRC_OR_nDEST    0xB
 103 #define nSRC                    0xC
 104 #define nSRC_OR_DEST    0xD
 105 #define SRC_NAND_DEST   0xE
 106 #define DEST_ONE                0xF
 107
 108 #define SWAP(A) ((A>>8) | ((A&0xff) <<8))
 109
 110
 111 /* frame buffer operations */
 112
 113 static int dn_fb_get_fix(struct fb_fix_screeninfo *fix, int con,
 114                          struct fb_info *info);
 115 static int dn_fb_get_var(struct fb_var_screeninfo *var, int con,
 116                          struct fb_info *info);
 117 static int dn_fb_set_var(struct fb_var_screeninfo *var, int isactive,
 118                          struct fb_info *info);
 119 static int dn_fb_get_cmap(struct fb_cmap *cmap,int kspc,int con,
 120                           struct fb_info *info);
 121 static int dn_fb_set_cmap(struct fb_cmap *cmap,int kspc,int con,
 122                           struct fb_info *info);
 123
 124 static int dnfbcon_switch(int con,struct fb_info *info);
 125 static int dnfbcon_updatevar(int con,struct fb_info *info);
 126 static void dnfbcon_blank(int blank,struct fb_info *info);
 127
 128 static void dn_fb_set_disp(int con,struct fb_info *info);
 129
 130 static struct display disp[MAX_NR_CONSOLES];
 131 static struct fb_info fb_info;
 132 static struct fb_ops dn_fb_ops = {
 133         owner:          THIS_MODULE,
 134         fb_get_fix:     dn_fb_get_fix,
 135         fb_get_var:     dn_fb_get_var,
 136         fb_set_var:     dn_fb_set_var,
 137         fb_get_cmap:    dn_fb_get_cmap,
 138         fb_set_cmap:    dn_fb_set_cmap,
 139 };
 140
 141 static int currcon=0;
 142
 143 #define NUM_TOTAL_MODES 1
 144 struct fb_var_screeninfo dn_fb_predefined[] = {
 145
 146         { 0, },
 147
 148 };
 149
 150 static char dn_fb_name[]="Apollo ";
 151
 152 /* accel stuff */
 153 #define USE_DN_ACCEL
 154
 155 static struct display_switch dispsw_apollofb;
 156
 157 static int dn_fb_get_fix(struct fb_fix_screeninfo *fix, int con,
 158                          struct fb_info *info) {
 159
 160         strcpy(fix->id,"Apollo Color8");
 161         fix->smem_start=(char*)(FRAME_BUFFER_START+IO_BASE);
 162         fix->smem_len=FRAME_BUFFER_LEN;
 163         fix->type=FB_TYPE_PACKED_PIXELS;
 164         fix->type_aux=0;
 165         fix->visual=FB_VISUAL_MONO10;
 166         fix->xpanstep=0;
 167         fix->ypanstep=0;
 168         fix->ywrapstep=0;
 169         fix->line_length=128;
 170
 171         return 0;
 172
 173 }
 174
 175 static int dn_fb_get_var(struct fb_var_screeninfo *var, int con,
 176                          struct fb_info *info) {
 177
 178         var->xres=1024;
 179         var->yres=800;
 180         var->xres_virtual=1024;
 181         var->yres_virtual=1024;
 182         var->xoffset=0;
 183         var->yoffset=0;
 184         var->bits_per_pixel=1;
 185         var->grayscale=0;
 186         var->nonstd=0;
 187         var->activate=0;
 188         var->height=-1;
 189         var->width=-1;
 190         var->pixclock=0;
 191         var->left_margin=0;
 192         var->right_margin=0;
 193         var->hsync_len=0;
 194         var->vsync_len=0;
 195         var->sync=0;
 196         var->vmode=FB_VMODE_NONINTERLACED;
 197
 198         return 0;
 199
 200 }
 201
 202 static int dn_fb_set_var(struct fb_var_screeninfo *var, int con,
 203                          struct fb_info *info) {
 204
 205         printk("fb_set_var\n");
 206         if(var->xres!=1024)
 207                 return -EINVAL;
 208         if(var->yres!=800)
 209                 return -EINVAL;
 210         if(var->xres_virtual!=1024)
 211                 return -EINVAL;
 212         if(var->yres_virtual!=1024)
 213                 return -EINVAL;
 214         if(var->xoffset!=0)
 215                 return -EINVAL;
 216         if(var->yoffset!=0)
 217                 return -EINVAL;
 218         if(var->bits_per_pixel!=1)
 219                 return -EINVAL;
 220         if(var->grayscale!=0)
 221                 return -EINVAL;
 222         if(var->nonstd!=0)
 223                 return -EINVAL;
 224         if(var->activate!=0)
 225                 return -EINVAL;
 226         if(var->pixclock!=0)
 227                 return -EINVAL;
 228         if(var->left_margin!=0)
 229                 return -EINVAL;
 230         if(var->right_margin!=0)
 231                 return -EINVAL;
 232         if(var->hsync_len!=0)
 233                 return -EINVAL;
 234         if(var->vsync_len!=0)
 235                 return -EINVAL;
 236         if(var->sync!=0)
 237                 return -EINVAL;
 238         if(var->vmode!=FB_VMODE_NONINTERLACED)
 239                 return -EINVAL;
 240
 241         return 0;
 242
 243 }
 244
 245 static int dn_fb_get_cmap(struct fb_cmap *cmap,int kspc,int con,
 246                           struct fb_info *info) {
 247
 248         printk("get cmap not supported\n");
 249
 250         return -EINVAL;
 251 }
 252
 253 static int dn_fb_set_cmap(struct fb_cmap *cmap,int kspc,int con,
 254                           struct fb_info *info) {
 255
 256         printk("set cmap not supported\n");
 257
 258         return -EINVAL;
 259
 260 }
 261
 262 static void dn_fb_set_disp(int con, struct fb_info *info) {
 263
 264   struct fb_fix_screeninfo fix;
 265
 266   dn_fb_get_fix(&fix,con, info);
 267   if(con==-1)
 268     con=0;
 269
 270    disp[con].screen_base = (u_char *)fix.smem_start;
 271 printk("screenbase: %p\n",fix.smem_start);
 272    disp[con].visual = fix.visual;
 273    disp[con].type = fix.type;
 274    disp[con].type_aux = fix.type_aux;
 275    disp[con].ypanstep = fix.ypanstep;
 276    disp[con].ywrapstep = fix.ywrapstep;
 277    disp[con].can_soft_blank = 1;
 278    disp[con].inverse = 0;
 279    disp[con].line_length = fix.line_length;
 280    disp[con].dispsw = &dispsw_apollofb;
 281 }
 282
 283 unsigned long dn_fb_init(unsigned long mem_start) {
 284
 285         int err;
 286
 287 printk("dn_fb_init\n");
 288
 289         fb_info.changevar=NULL;
 290         strcpy(&fb_info.modename[0],dn_fb_name);
 291         fb_info.fontname[0]=0;
 292         fb_info.disp=disp;
 293         fb_info.switch_con=&dnfbcon_switch;
 294         fb_info.updatevar=&dnfbcon_updatevar;
 295         fb_info.blank=&dnfbcon_blank;
 296         fb_info.node = -1;
 297         fb_info.fbops = &dn_fb_ops;
 298
 299 printk("dn_fb_init: register\n");
 300         err=register_framebuffer(&fb_info);
 301         if(err < 0) {
 302                 panic("unable to register apollo frame buffer\n");
 303         }
 304
 305         /* now we have registered we can safely setup the hardware */
 306
 307         outb(RESET_CREG,  AP_CONTROL_3A);
 308         outb(RESET_CREG,  AP_CONTROL_3B);
 309         outw(0x0,  AP_WRITE_ENABLE);
 310         outb(NORMAL_MODE, AP_CONTROL_0);
 311         outb((AD_BLT | DST_EQ_SRC | NORM_CREG1),  AP_CONTROL_1);
 312         outb(0,  AP_CONTROL_2A);
 313         outb(S_DATA_PLN,  AP_CONTROL_2B);
 314         outw(SWAP(0x3), AP_ROP_1);
 315
 316         printk("apollo frame buffer alive and kicking !\n");
 317
 318         dn_fb_get_var(&disp[0].var,0, &fb_info);
 319
 320         dn_fb_set_disp(-1, &fb_info);
 321
 322         return mem_start;
 323
 324 }
 325
 326
 327 static int dnfbcon_switch(int con,  struct fb_info *info) {
 328
 329         currcon=con;
 330
 331         return 0;
 332
 333 }
 334
 335 static int dnfbcon_updatevar(int con,  struct fb_info *info) {
 336
 337         return 0;
 338
 339 }
 340
 341 static void dnfbcon_blank(int blank,  struct fb_info *info) {
 342
 343         if(blank)  {
 344                 outb(0x0,  AP_CONTROL_3A);
 345         }
 346         else {
 347                 outb(0x1,  AP_CONTROL_3A);
 348         }
 349
 350         return ;
 351
 352 }
 353
 354 void dn_bitblt(struct display *p,int x_src,int y_src, int x_dest, int y_dest,
 355                int x_count, int y_count) {
 356
 357         int incr,y_delta,pre_read=0,x_end,x_word_count;
 358         ushort *src,dummy;
 359         uint start_mask,end_mask,dest;
 360         short i,j;
 361
 362         incr=(y_dest<=y_src) ? 1 : -1 ;
 363
 364         src=(ushort *)(p->screen_base+ y_src*p->next_line+(x_src >> 4));
 365         dest=y_dest*(p->next_line >> 1)+(x_dest >> 4);
 366
 367         if(incr>0) {
 368                 y_delta=(p->next_line*8)-x_src-x_count;
 369                 x_end=x_dest+x_count-1;
 370                 x_word_count=(x_end>>4) - (x_dest >> 4) + 1;
 371                 start_mask=0xffff0000 >> (x_dest & 0xf);
 372                 end_mask=0x7ffff >> (x_end & 0xf);
 373                 outb((((x_dest & 0xf) - (x_src &0xf))  % 16)|(0x4 << 5),AP_CONTROL_0);
 374                 if((x_dest & 0xf) < (x_src & 0xf))
 375                         pre_read=1;
 376         }
 377         else {
 378                 y_delta=-((p->next_line*8)-x_src-x_count);
 379                 x_end=x_dest-x_count+1;
 380                 x_word_count=(x_dest>>4) - (x_end >> 4) + 1;
 381                 start_mask=0x7ffff >> (x_dest & 0xf);
 382                 end_mask=0xffff0000 >> (x_end & 0xf);
 383                 outb(((-((x_src & 0xf) - (x_dest &0xf))) % 16)|(0x4 << 5),AP_CONTROL_0);
 384                 if((x_dest & 0xf) > (x_src & 0xf))
 385                         pre_read=1;
 386         }
 387
 388         for(i=0;i<y_count;i++) {
 389
 390                 if(pre_read) {
 391                         dummy=*src;
 392                         src+=incr;
 393                 }
 394
 395                 if(x_word_count) {
 396                         outb(start_mask,AP_WRITE_ENABLE);
 397                         *src=dest;
 398                         src+=incr;
 399                         dest+=incr;
 400                         outb(0,AP_WRITE_ENABLE);
 401
 402                         for(j=1;j<(x_word_count-1);j++) {
 403                                 *src=dest;
 404                                 src+=incr;
 405                                 dest+=incr;
 406                         }
 407
 408                         outb(start_mask,AP_WRITE_ENABLE);
 409                         *src=dest;
 410                         dest+=incr;
 411                         src+=incr;
 412                 }
 413                 else {
 414                         outb(start_mask | end_mask, AP_WRITE_ENABLE);
 415                         *src=dest;
 416                         dest+=incr;
 417                         src+=incr;
 418                 }
 419                 src+=(y_delta/16);
 420                 dest+=(y_delta/16);
 421         }
 422         outb(NORMAL_MODE,AP_CONTROL_0);
 423 }
 424
 425 static void bmove_apollofb(struct display *p, int sy, int sx, int dy, int dx,
 426                       int height, int width)
 427 {
 428
 429 #ifdef USE_DN_ACCEL
 430     dn_bitblt(p,sx,sy*p->fontheight,dx,dy*p->fontheight,width*p->fontwidth,
 431               height*p->fontheight);
 432 #else
 433     u_char *src, *dest;
 434     u_int rows;
 435
 436     if (sx == 0 && dx == 0 && width == p->next_line) {
 437         src = p->screen_base+sy*p->fontheight*width;
 438         dest = p->screen_base+dy*p->fontheight*width;
 439         mymemmove(dest, src, height*p->fontheight*width);
 440     } else if (dy <= sy) {
 441         src = p->screen_base+sy*p->fontheight*p->next_line+sx;
 442         dest = p->screen_base+dy*p->fontheight*p->next_line+dx;
 443         for (rows = height*p->fontheight; rows--;) {
 444             mymemmove(dest, src, width);
 445             src += p->next_line;
 446             dest += p->next_line;
 447         }
 448     } else {
 449         src = p->screen_base+((sy+height)*p->fontheight-1)*p->next_line+sx;
 450         dest = p->screen_base+((dy+height)*p->fontheight-1)*p->next_line+dx;
 451         for (rows = height*p->fontheight; rows--;) {
 452             mymemmove(dest, src, width);
 453             src -= p->next_line;
 454             dest -= p->next_line;
 455         }
 456     }
 457 #endif
 458 }
 459
 460 static void clear_apollofb(struct vc_data *conp, struct display *p, int sy, int sx,
 461                       int height, int width)
 462 {
 463     u_char *dest;
 464     u_int rows;
 465
 466     dest = p->screen_base+sy*p->fontheight*p->next_line+sx;
 467
 468     if (sx == 0 && width == p->next_line)
 469         if (attr_reverse(p,conp))
 470             mymemset(dest, height*p->fontheight*width);
 471         else
 472             mymemclear(dest, height*p->fontheight*width);
 473     else
 474         for (rows = height*p->fontheight; rows--; dest += p->next_line)
 475             if (attr_reverse(p,conp))
 476                 mymemset(dest, width);
 477             else
 478                 mymemclear_small(dest, width);
 479 }
 480
 481 static void putc_apollofb(struct vc_data *conp, struct display *p, int c, int yy,
 482                      int xx)
 483 {
 484     u_char *dest, *cdat;
 485     u_int rows, bold, revs, underl;
 486     u_char d;
 487
 488     c &= 0xff;
 489
 490     dest = p->screen_base+yy*p->fontheight*p->next_line+xx;
 491     cdat = p->fontdata+c*p->fontheight;
 492     bold = attr_bold(p,conp);
 493     revs = attr_reverse(p,conp);
 494     underl = attr_underline(p,conp);
 495
 496     for (rows = p->fontheight; rows--; dest += p->next_line) {
 497         d = *cdat++;
 498         if (underl && !rows)
 499             d = 0xff;
 500         else if (bold)
 501             d |= d>>1;
 502         if (revs)
 503             d = ~d;
 504         *dest = d;
 505     }
 506 }
 507
 508 static void putcs_apollofb(struct vc_data *conp, struct display *p, const char *s,
 509                       int count, int yy, int xx)
 510 {
 511     u_char *dest, *dest0, *cdat;
 512     u_int rows, bold, revs, underl;
 513     u_char c, d;
 514
 515     dest0 = p->screen_base+yy*p->fontheight*p->next_line+xx;
 516     bold = attr_bold(p,conp);
 517     revs = attr_reverse(p,conp);
 518     underl = attr_underline(p,conp);
 519
 520     while (count--) {
 521         c = scr_readw(s++);
 522         dest = dest0++;
 523         cdat = p->fontdata+c*p->fontheight;
 524         for (rows = p->fontheight; rows--; dest += p->next_line) {
 525             d = *cdat++;
 526             if (underl && !rows)
 527                 d = 0xff;
 528             else if (bold)
 529                 d |= d>>1;
 530             if (revs)
 531                 d = ~d;
 532             *dest = d;
 533         }
 534     }
 535 }
 536
 537 static void rev_char_apollofb(struct display *p, int xx, int yy)
 538 {
 539     u_char *dest;
 540     u_int rows;
 541
 542     dest = p->screen_base+yy*p->fontheight*p->next_line+xx;
 543     for (rows = p->fontheight; rows--; dest += p->next_line)
 544         *dest = ~*dest;
 545 }
 546
 547 static struct display_switch dispsw_apollofb = {
 548     setup:              fbcon_mfb_setup,
 549     bmove:              bmove_apollofb,
 550     clear:              clear_apollofb,
 551     putc:               putc_apollofb,
 552     putcs:              putcs_apollofb,
 553     revc:               rev_char_apollofb,
 554     fontwidthmask:      FONTWIDTH(8)
 555 };
 556
 557 MODULE_LICENSE("GPL");