drivers/tdfx_vid.c

   1 /*
   2  * Copyright (C) 2003 Alban Bedel
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <linux/config.h>
  22 #include <linux/version.h>
  23 #include <linux/module.h>
  24 #include <linux/types.h>
  25 #include <linux/kernel.h>
  26 #include <linux/sched.h>
  27 #include <linux/mm.h>
  28 #include <linux/string.h>
  29 #include <linux/errno.h>
  30
  31 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,10)
  32 #include <linux/malloc.h>
  33 #else
  34 #include <linux/slab.h>
  35 #endif
  36
  37 #include <linux/pci.h>
  38 #include <linux/ioport.h>
  39 #include <linux/init.h>
  40 #include <linux/agp_backend.h>
  41
  42 #include <asm/uaccess.h>
  43 #include <asm/system.h>
  44 #include <asm/io.h>
  45
  46 #include "tdfx_vid.h"
  47 #include "3dfx.h"
  48
  49
  50 #define TDFX_VID_MAJOR 178
  51
  52 MODULE_AUTHOR("Albeu");
  53 MODULE_DESCRIPTION("A driver for Banshee targeted for video app");
  54
  55 #ifdef MODULE_LICENSE
  56 MODULE_LICENSE("GPL");
  57 #endif
  58
  59 #ifndef min
  60 #define min(x,y) (((x)<(y))?(x):(y))
  61 #endif
  62
  63 static struct pci_dev *pci_dev;
  64
  65 static uint8_t *tdfx_mmio_base = 0;
  66 static uint32_t tdfx_mem_base = 0;
  67 static uint32_t tdfx_io_base = 0;
  68
  69 static int tdfx_ram_size = 0;
  70
  71 static int tdfx_vid_in_use = 0;
  72
  73 static drm_agp_t *drm_agp = NULL;
  74 static agp_kern_info agp_info;
  75 static agp_memory *agp_mem = NULL;
  76
  77 static __initdata int tdfx_map_io = 1;
  78 static __initdata unsigned long map_start = 0; //0x7300000;
  79 static __initdata unsigned long map_max = (10*1024*1024);
  80
  81 MODULE_PARM(tdfx_map_io,"i");
  82 MODULE_PARM_DESC(tdfx_map_io, "Set to 0 to use the page fault handler (you need to patch agpgart_be.c to allow the mapping in user space)\n");
  83 MODULE_PARM(map_start,"l");
  84 MODULE_PARM_DESC(map_start,"Use a block of physical mem instead of the agp arerture.");
  85 MODULE_PARM(map_max,"l");
  86 MODULE_PARM_DESC(map_max, "Maximum amout of physical memory (in bytes) that can be used\n");
  87
  88 static inline u32 tdfx_inl(unsigned int reg) {
  89   return readl(tdfx_mmio_base + reg);
  90 }
  91
  92 static inline void tdfx_outl(unsigned int reg, u32 val) {
  93   writel(val,tdfx_mmio_base  + reg);
  94 }
  95
  96 static inline void banshee_make_room(int size) {
  97   while((tdfx_inl(STATUS) & 0x1f) < size);
  98 }
  99
 100 static inline void banshee_wait_idle(void) {
 101   int i = 0;
 102
 103   banshee_make_room(1);
 104   tdfx_outl(COMMAND_3D, COMMAND_3D_NOP);
 105
 106   while(1) {
 107     i = (tdfx_inl(STATUS) & STATUS_BUSY) ? 0 : i + 1;
 108     if(i == 3) break;
 109   }
 110 }
 111
 112 static unsigned long get_lfb_size(void) {
 113   u32 draminit0 = 0;
 114   u32 draminit1 = 0;
 115   //  u32 miscinit1 = 0;
 116   u32 lfbsize   = 0;
 117   int sgram_p     = 0;
 118
 119   draminit0 = tdfx_inl(DRAMINIT0);
 120   draminit1 = tdfx_inl(DRAMINIT1);
 121
 122   if ((pci_dev->device == PCI_DEVICE_ID_3DFX_BANSHEE) ||
 123       (pci_dev->device == PCI_DEVICE_ID_3DFX_VOODOO3)) {
 124     sgram_p = (draminit1 & DRAMINIT1_MEM_SDRAM) ? 0 : 1;
 125
 126     lfbsize = sgram_p ?
 127       (((draminit0 & DRAMINIT0_SGRAM_NUM)  ? 2 : 1) *
 128        ((draminit0 & DRAMINIT0_SGRAM_TYPE) ? 8 : 4) * 1024 * 1024) :
 129       16 * 1024 * 1024;
 130   } else {
 131     /* Voodoo4/5 */
 132     u32 chips, psize, banks;
 133
 134     chips = ((draminit0 & (1 << 26)) == 0) ? 4 : 8;
 135     psize = 1 << ((draminit0 & 0x38000000) >> 28);
 136     banks = ((draminit0 & (1 << 30)) == 0) ? 2 : 4;
 137     lfbsize = chips * psize * banks;
 138     lfbsize <<= 20;
 139   }
 140
 141 #if 0
 142   /* disable block writes for SDRAM (why?) */
 143   miscinit1 = tdfx_inl(MISCINIT1);
 144   miscinit1 |= sgram_p ? 0 : MISCINIT1_2DBLOCK_DIS;
 145   miscinit1 |= MISCINIT1_CLUT_INV;
 146
 147   banshee_make_room(1);
 148   tdfx_outl(MISCINIT1, miscinit1);
 149 #endif
 150
 151   return lfbsize;
 152 }
 153
 154 static int tdfx_vid_find_card(void)
 155 {
 156   struct pci_dev *dev = NULL;
 157   //  unsigned int card_option;
 158
 159   if((dev = pci_find_device(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE, NULL)))
 160     printk(KERN_INFO "tdfx_vid: Found VOODOO BANSHEE\n");
 161   else if((dev = pci_find_device(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3, NULL)))
 162     printk(KERN_INFO "tdfx_vid: Found VOODOO 3 \n");
 163   else
 164     return 0;
 165
 166
 167   pci_dev = dev;
 168
 169 #if LINUX_VERSION_CODE >= 0x020300
 170   tdfx_mmio_base = ioremap_nocache(dev->resource[0].start,1 << 24);
 171   tdfx_mem_base =  dev->resource[1].start;
 172   tdfx_io_base = dev->resource[2].start;
 173 #else
 174   tdfx_mmio_base = ioremap_nocache(dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK,0x4000);
 175   tdfx_mem_base =  dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK;
 176   tdfx_io_base = dev->base_address[2] & PCI_BASE_ADDRESS_MEM_MASK;
 177 #endif
 178   printk(KERN_INFO "tdfx_vid: MMIO at 0x%p\n", tdfx_mmio_base);
 179   tdfx_ram_size = get_lfb_size();
 180
 181   printk(KERN_INFO "tdfx_vid: Found %d MB (%d bytes) of memory\n",
 182          tdfx_ram_size / 1024 / 1024,tdfx_ram_size);
 183
 184
 185 #if 0
 186   {
 187     int temp;
 188     printk("List resources -----------\n");
 189     for(temp=0;temp<DEVICE_COUNT_RESOURCE;temp++){
 190       struct resource *res=&pci_dev->resource[temp];
 191       if(res->flags){
 192         int size=(1+res->end-res->start)>>20;
 193         printk(KERN_DEBUG "res %d:  start: 0x%X   end: 0x%X  (%d MB) flags=0x%X\n",temp,res->start,res->end,size,res->flags);
 194         if(res->flags&(IORESOURCE_MEM|IORESOURCE_PREFETCH)){
 195           if(size>tdfx_ram_size && size<=64) tdfx_ram_size=size;
 196         }
 197       }
 198     }
 199   }
 200 #endif
 201
 202
 203   return 1;
 204 }
 205
 206 static int agp_init(void) {
 207
 208   drm_agp = (drm_agp_t*)inter_module_get("drm_agp");
 209
 210   if(!drm_agp) {
 211     printk(KERN_ERR "tdfx_vid: Unable to get drm_agp pointer\n");
 212     return 0;
 213   }
 214
 215   if(drm_agp->acquire()) {
 216     printk(KERN_ERR "tdfx_vid: Unable to acquire the agp backend\n");
 217     drm_agp = NULL;
 218     return 0;
 219   }
 220
 221   drm_agp->copy_info(&agp_info);
 222 #if 0
 223   printk(KERN_DEBUG "AGP Version : %d %d\n"
 224          "AGP Mode: %#X\nAperture Base: %p\nAperture Size: %d\n"
 225          "Max memory = %d\nCurrent mem = %d\nCan use perture : %s\n"
 226          "Page mask = %#X\n",
 227          agp_info.version.major,agp_info.version.minor,
 228          agp_info.mode,agp_info.aper_base,agp_info.aper_size,
 229          agp_info.max_memory,agp_info.current_memory,
 230          agp_info.cant_use_aperture ? "no" : "yes",
 231          agp_info.page_mask);
 232 #endif
 233   drm_agp->enable(agp_info.mode);
 234
 235
 236   printk(KERN_INFO "AGP Enabled\n");
 237
 238   return 1;
 239 }
 240
 241 static void agp_close(void) {
 242
 243   if(!drm_agp) return;
 244
 245   if(agp_mem) {
 246     drm_agp->unbind_memory(agp_mem);
 247     drm_agp->free_memory(agp_mem);
 248     agp_mem = NULL;
 249   }
 250
 251
 252   drm_agp->release();
 253   inter_module_put("drm_agp");
 254 }
 255
 256 static int agp_move(tdfx_vid_agp_move_t* m) {
 257   u32 src = 0;
 258   u32 src_h,src_l;
 259
 260   if(!(agp_mem||map_start))
 261     return (-EAGAIN);
 262
 263   if(m->move2 > 3) {
 264     printk(KERN_DEBUG "tdfx_vid: AGP move invalid destination %d\n",
 265            m->move2);
 266     return (-EAGAIN);
 267   }
 268
 269   if(map_start)
 270     src =  map_start + m->src;
 271   else
 272     src =  agp_info.aper_base +  m->src;
 273
 274   src_l = (u32)src;
 275   src_h = (m->width | (m->src_stride << 14)) & 0x0FFFFFFF;
 276
 277   //  banshee_wait_idle();
 278   banshee_make_room(6);
 279   tdfx_outl(AGPHOSTADDRESSHIGH,src_h);
 280   tdfx_outl(AGPHOSTADDRESSLOW,src_l);
 281
 282   tdfx_outl(AGPGRAPHICSADDRESS, m->dst);
 283   tdfx_outl(AGPGRAPHICSSTRIDE, m->dst_stride);
 284   tdfx_outl(AGPREQSIZE,m->src_stride*m->height);
 285
 286   tdfx_outl(AGPMOVECMD,m->move2 << 3);
 287   banshee_wait_idle();
 288
 289   return 0;
 290 }
 291
 292 static void setup_fifo(u32 offset,ssize_t pages) {
 293   long addr = agp_info.aper_base + offset;
 294   u32 size = pages | 0x700; // fifo on, in agp mem, disable hole cnt
 295
 296   banshee_wait_idle();
 297
 298   tdfx_outl(CMDBASEADDR0,addr >> 4);
 299   tdfx_outl(CMDRDPTRL0, addr << 4);
 300   tdfx_outl(CMDRDPTRH0, addr >> 28);
 301   tdfx_outl(CMDAMIN0, (addr - 4) & 0xFFFFFF);
 302   tdfx_outl(CMDAMAX0, (addr - 4) & 0xFFFFFF);
 303   tdfx_outl(CMDFIFODEPTH0, 0);
 304   tdfx_outl(CMDHOLECNT0, 0);
 305   tdfx_outl(CMDBASESIZE0,size);
 306
 307   banshee_wait_idle();
 308
 309 }
 310
 311 static int bump_fifo(u16 size) {
 312
 313   banshee_wait_idle();
 314   tdfx_outl(CMDBUMP0 , size);
 315   banshee_wait_idle();
 316
 317   return 0;
 318 }
 319
 320 static void tdfx_vid_get_config(tdfx_vid_config_t* cfg) {
 321   u32 in;
 322
 323   cfg->version = TDFX_VID_VERSION;
 324   cfg->ram_size = tdfx_ram_size;
 325
 326   in = tdfx_inl(VIDSCREENSIZE);
 327   cfg->screen_width = in & 0xFFF;
 328   cfg->screen_height = (in >> 12) & 0xFFF;
 329   in = (tdfx_inl(VIDPROCCFG)>> 18)& 0x7;
 330   switch(in) {
 331   case 0:
 332     cfg->screen_format = TDFX_VID_FORMAT_BGR8;
 333     break;
 334   case 1:
 335     cfg->screen_format = TDFX_VID_FORMAT_BGR16;
 336     break;
 337   case 2:
 338     cfg->screen_format = TDFX_VID_FORMAT_BGR24;
 339     break;
 340   case 3:
 341     cfg->screen_format = TDFX_VID_FORMAT_BGR32;
 342     break;
 343   default:
 344     printk(KERN_INFO "tdfx_vid: unknown screen format %d\n",in);
 345     cfg->screen_format = 0;
 346     break;
 347   }
 348   cfg->screen_stride = tdfx_inl(VIDDESKSTRIDE) & 0x7FFF;
 349   cfg->screen_start = tdfx_inl(VIDDESKSTART);
 350 }
 351
 352 inline static u32 tdfx_vid_make_format(int src,u16 stride,u32 fmt) {
 353   u32 r = stride & 0xFFF3;
 354   u32 tdfx_fmt = 0;
 355
 356   // src and dest formats
 357   switch(fmt) {
 358   case TDFX_VID_FORMAT_BGR8:
 359     tdfx_fmt = 1;
 360     break;
 361   case TDFX_VID_FORMAT_BGR16:
 362     tdfx_fmt = 3;
 363     break;
 364   case TDFX_VID_FORMAT_BGR24:
 365     tdfx_fmt = 4;
 366     break;
 367   case TDFX_VID_FORMAT_BGR32:
 368     tdfx_fmt = 5;
 369     break;
 370   }
 371
 372   if(!src && !tdfx_fmt) {
 373     printk(KERN_INFO "tdfx_vid: Invalid destination format %#X\n",fmt);
 374     return 0;
 375   }
 376
 377   if(src && !tdfx_fmt) {
 378     // src only format
 379     switch(fmt){
 380     case TDFX_VID_FORMAT_BGR1:
 381       tdfx_fmt = 0;
 382       break;
 383     case TDFX_VID_FORMAT_BGR15: // To check
 384       tdfx_fmt = 2;
 385       break;
 386     case TDFX_VID_FORMAT_YUY2:
 387       tdfx_fmt = 8;
 388       break;
 389     case TDFX_VID_FORMAT_UYVY:
 390       tdfx_fmt = 9;
 391       break;
 392     default:
 393       printk(KERN_INFO "tdfx_vid: Invalid source format %#X\n",fmt);
 394       return 0;
 395     }
 396   }
 397
 398   r |= tdfx_fmt << 16;
 399
 400   return r;
 401 }
 402
 403 static int tdfx_vid_blit(tdfx_vid_blit_t* blit) {
 404   u32 src_fmt,dst_fmt,cmd = 2;
 405   u32 cmin,cmax,srcbase,srcxy,srcfmt,srcsize;
 406   u32 dstbase,dstxy,dstfmt,dstsize = 0;
 407   u32 cmd_extra = 0,src_ck[2],dst_ck[2],rop123=0;
 408
 409   //printk(KERN_INFO "tdfx_vid: Make src fmt 0x%x\n",blit->src_format);
 410   src_fmt = tdfx_vid_make_format(1,blit->src_stride,blit->src_format);
 411   if(!src_fmt)
 412     return 0;
 413   //printk(KERN_INFO "tdfx_vid: Make dst fmt 0x%x\n", blit->dst_format);
 414   dst_fmt = tdfx_vid_make_format(0,blit->dst_stride,blit->dst_format);
 415   if(!dst_fmt)
 416     return 0;
 417   blit->colorkey &= 0x3;
 418   // Be nice if user just want a simple blit
 419   if((!blit->colorkey) && (!blit->rop[0]))
 420     blit->rop[0] = TDFX_VID_ROP_COPY;
 421   // No stretch : fix me the cmd should be 1 but it
 422   // doesn't work. Maybe some other regs need to be set
 423   // as non-stretch blit have more options
 424   if(((!blit->dst_w) && (!blit->dst_h)) ||
 425      ((blit->dst_w == blit->src_w) && (blit->dst_h == blit->src_h)))
 426     cmd = 2;
 427
 428   // Save the regs otherwise fb get crazy
 429   // we can perhaps avoid some ...
 430   banshee_wait_idle();
 431   cmin = tdfx_inl(CLIP0MIN);
 432   cmax = tdfx_inl(CLIP0MAX);
 433   srcbase = tdfx_inl(SRCBASE);
 434   srcxy = tdfx_inl(SRCXY);
 435   srcfmt = tdfx_inl(SRCFORMAT);
 436   srcsize = tdfx_inl(SRCSIZE);
 437   dstbase = tdfx_inl(DSTBASE);
 438   dstxy = tdfx_inl(DSTXY);
 439   dstfmt = tdfx_inl(DSTFORMAT);
 440   if(cmd == 2)
 441     dstsize = tdfx_inl(DSTSIZE);
 442   if(blit->colorkey & TDFX_VID_SRC_COLORKEY) {
 443     src_ck[0] = tdfx_inl(SRCCOLORKEYMIN);
 444     src_ck[1] = tdfx_inl(SRCCOLORKEYMAX);
 445     tdfx_outl(SRCCOLORKEYMIN,blit->src_colorkey[0]);
 446     tdfx_outl(SRCCOLORKEYMAX,blit->src_colorkey[1]);
 447   }
 448   if(blit->colorkey & TDFX_VID_DST_COLORKEY) {
 449     dst_ck[0] = tdfx_inl(DSTCOLORKEYMIN);
 450     dst_ck[1] = tdfx_inl(DSTCOLORKEYMAX);
 451     tdfx_outl(SRCCOLORKEYMIN,blit->dst_colorkey[0]);
 452     tdfx_outl(SRCCOLORKEYMAX,blit->dst_colorkey[1]);
 453   }
 454   if(blit->colorkey) {
 455     cmd_extra = tdfx_inl(COMMANDEXTRA_2D);
 456     rop123 = tdfx_inl(ROP123);
 457     tdfx_outl(COMMANDEXTRA_2D, blit->colorkey);
 458     tdfx_outl(ROP123,(blit->rop[1] | (blit->rop[2] << 8) | blit->rop[3] << 16));
 459
 460   }
 461   // Get rid of the clipping at the moment
 462   tdfx_outl(CLIP0MIN,0);
 463   tdfx_outl(CLIP0MAX,0x0fff0fff);
 464
 465   // Setup the src
 466   tdfx_outl(SRCBASE,blit->src & 0x00FFFFFF);
 467   tdfx_outl(SRCXY,XYREG(blit->src_x,blit->src_y));
 468   tdfx_outl(SRCFORMAT,src_fmt);
 469   tdfx_outl(SRCSIZE,XYREG(blit->src_w,blit->src_h));
 470
 471   // Setup the dst
 472   tdfx_outl(DSTBASE,blit->dst & 0x00FFFFFF);
 473   tdfx_outl(DSTXY,XYREG(blit->dst_x,blit->dst_y));
 474   tdfx_outl(DSTFORMAT,dst_fmt);
 475   if(cmd == 2)
 476     tdfx_outl(DSTSIZE,XYREG(blit->dst_w,blit->dst_h));
 477
 478   // Send the command
 479   tdfx_outl(COMMAND_2D,cmd | 0x100 | (blit->rop[0] << 24));
 480   banshee_wait_idle();
 481
 482   // Now restore the regs to make fb happy
 483   tdfx_outl(CLIP0MIN, cmin);
 484   tdfx_outl(CLIP0MAX, cmax);
 485   tdfx_outl(SRCBASE, srcbase);
 486   tdfx_outl(SRCXY, srcxy);
 487   tdfx_outl(SRCFORMAT, srcfmt);
 488   tdfx_outl(SRCSIZE, srcsize);
 489   tdfx_outl(DSTBASE, dstbase);
 490   tdfx_outl(DSTXY, dstxy);
 491   tdfx_outl(DSTFORMAT, dstfmt);
 492   if(cmd == 2)
 493     tdfx_outl(DSTSIZE, dstsize);
 494   if(blit->colorkey & TDFX_VID_SRC_COLORKEY) {
 495     tdfx_outl(SRCCOLORKEYMIN,src_ck[0]);
 496     tdfx_outl(SRCCOLORKEYMAX,src_ck[1]);
 497   }
 498   if(blit->colorkey & TDFX_VID_DST_COLORKEY) {
 499     tdfx_outl(SRCCOLORKEYMIN,dst_ck[0]);
 500     tdfx_outl(SRCCOLORKEYMAX,dst_ck[1]);
 501   }
 502   if(blit->colorkey) {
 503     tdfx_outl(COMMANDEXTRA_2D,cmd_extra);
 504     tdfx_outl(ROP123,rop123);
 505   }
 506   return 1;
 507 }
 508
 509 static int tdfx_vid_set_yuv(unsigned long arg) {
 510   tdfx_vid_yuv_t yuv;
 511
 512   if(copy_from_user(&yuv,(tdfx_vid_yuv_t*)arg,sizeof(tdfx_vid_yuv_t))) {
 513     printk(KERN_DEBUG "tdfx_vid:failed copy from userspace\n");
 514     return(-EFAULT);
 515   }
 516   banshee_make_room(2);
 517   tdfx_outl(YUVBASEADDRESS,yuv.base & 0x01FFFFFF);
 518   tdfx_outl(YUVSTRIDE, yuv.stride & 0x3FFF);
 519
 520   banshee_wait_idle();
 521
 522   return 0;
 523 }
 524
 525 static int tdfx_vid_get_yuv(unsigned long arg) {
 526   tdfx_vid_yuv_t yuv;
 527
 528   yuv.base = tdfx_inl(YUVBASEADDRESS) & 0x01FFFFFF;
 529   yuv.stride = tdfx_inl(YUVSTRIDE) & 0x3FFF;
 530
 531   if(copy_to_user((tdfx_vid_yuv_t*)arg,&yuv,sizeof(tdfx_vid_yuv_t))) {
 532       printk(KERN_INFO "tdfx_vid:failed copy to userspace\n");
 533       return(-EFAULT);
 534   }
 535
 536   return 0;
 537 }
 538
 539 static int tdfx_vid_set_overlay(unsigned long arg) {
 540   tdfx_vid_overlay_t ov;
 541   uint32_t screen_w,screen_h;
 542   uint32_t vidcfg,stride,vidbuf;
 543   int disp_w,disp_h;
 544
 545   if(copy_from_user(&ov,(tdfx_vid_overlay_t*)arg,sizeof(tdfx_vid_overlay_t))) {
 546     printk(KERN_DEBUG "tdfx_vid:failed copy from userspace\n");
 547     return(-EFAULT);
 548   }
 549
 550   if(ov.dst_y < 0) {
 551     int shift;
 552     if(-ov.dst_y >= ov.src_height) {
 553       printk(KERN_DEBUG "tdfx_vid: Overlay outside of the screen ????\n");
 554       return(-EFAULT);
 555     }
 556     shift = (-ov.dst_y)/(double)ov.dst_height*ov.src_height;
 557     ov.src[0] += shift*ov.src_stride;
 558     ov.src_height -= shift;
 559     ov.dst_height += ov.dst_y;
 560     ov.dst_y = 0;
 561   }
 562
 563   if(ov.dst_x < 0) {
 564     int shift;
 565     if(-ov.dst_x >= ov.src_width) {
 566       printk(KERN_DEBUG "tdfx_vid: Overlay outside of the screen ????\n");
 567       return(-EFAULT);
 568     }
 569     shift = (-ov.dst_x)/(double)ov.dst_width*ov.src_width;
 570     shift = ((shift+3)/2)*2;
 571     ov.src[0] += shift*2;
 572     ov.src_width -= shift;
 573     ov.dst_width += ov.dst_x;
 574     ov.dst_x = 0;
 575   }
 576
 577   vidcfg = tdfx_inl(VIDPROCCFG);
 578   // clear the overlay fmt
 579   vidcfg &= ~(7 << 21);
 580   switch(ov.format) {
 581   case TDFX_VID_FORMAT_BGR15:
 582     vidcfg |= (1 << 21);
 583     break;
 584   case TDFX_VID_FORMAT_BGR16:
 585     vidcfg |= (7 << 21);
 586     break;
 587   case TDFX_VID_FORMAT_YUY2:
 588     vidcfg |= (5 << 21);
 589     break;
 590   case TDFX_VID_FORMAT_UYVY:
 591     vidcfg |= (6 << 21);
 592     break;
 593   default:
 594     printk(KERN_DEBUG "tdfx_vid: Invalid overlay fmt 0x%x\n",ov.format);
 595     return (-EFAULT);
 596   }
 597
 598   // YUV422 need 4 bytes aligned stride and address
 599   if((ov.format == TDFX_VID_FORMAT_YUY2 ||
 600       ov.format == TDFX_VID_FORMAT_UYVY)) {
 601     if((ov.src_stride & ~0x3) != ov.src_stride) {
 602       printk(KERN_DEBUG "tdfx_vid: YUV need a 4 bytes aligned stride %d\n",ov.src_stride);
 603       return(-EFAULT);
 604     }
 605     if((ov.src[0] & ~0x3) != ov.src[0] || (ov.src[1] & ~0x3) != ov.src[1]){
 606       printk(KERN_DEBUG "tdfx_vid: YUV need a 4 bytes aligned address 0x%x 0x%x\n",ov.src[0],ov.src[1]);
 607       return(-EFAULT);
 608     }
 609   }
 610
 611   // Now we have a good input format
 612   // but first get the screen size to check a bit
 613   // if the size/position is valid
 614   screen_w = tdfx_inl(VIDSCREENSIZE);
 615   screen_h = (screen_w >> 12) & 0xFFF;
 616   screen_w &= 0xFFF;
 617   disp_w =  ov.dst_x + ov.dst_width >= screen_w ?
 618     screen_w - ov.dst_x : ov.dst_width;
 619   disp_h =  ov.dst_y + ov.dst_height >= screen_h ?
 620     screen_h - ov.dst_y : ov.dst_height;
 621
 622   if(ov.dst_x >= screen_w || ov.dst_y >= screen_h ||
 623      disp_h <= 0 || disp_h > screen_h || disp_w <= 0 || disp_w > screen_w) {
 624     printk(KERN_DEBUG "tdfx_vid: Invalid overlay dimension and/or position\n");
 625     return (-EFAULT);
 626   }
 627   // Setup the vidproc
 628   // H scaling
 629   if(ov.src_width < ov.dst_width)
 630     vidcfg |= (1<<14);
 631   else
 632     vidcfg &= ~(1<<14);
 633   // V scaling
 634   if(ov.src_height < ov.dst_height)
 635     vidcfg |= (1<<15);
 636   else
 637     vidcfg &= ~(1<<15);
 638   // Filtering can only be used in 1x mode
 639   if(!(vidcfg | (1<<26)))
 640     vidcfg |= (3<<16);
 641   else
 642     vidcfg &= ~(3<<16);
 643   // disable overlay stereo mode
 644   vidcfg &= ~(1<<2);
 645   // Colorkey on/off
 646   if(ov.use_colorkey) {
 647     // Colorkey inversion
 648     if(ov.invert_colorkey)
 649       vidcfg |= (1<<6);
 650     else
 651       vidcfg &= ~(1<<6);
 652     vidcfg |= (1<<5);
 653   } else
 654     vidcfg &= ~(1<<5);
 655   // Overlay isn't VidIn
 656   vidcfg &= ~(1<<9);
 657   // vidcfg |= (1<<8);
 658   tdfx_outl(VIDPROCCFG,vidcfg);
 659
 660   // Start coord
 661   //printk(KERN_DEBUG "tdfx_vid: start %dx%d\n",ov.dst_x & 0xFFF,ov.dst_y & 0xFFF);
 662   tdfx_outl(VIDOVRSTARTCRD,(ov.dst_x & 0xFFF)|((ov.dst_y & 0xFFF)<<12));
 663   // End coord
 664   tdfx_outl(VIDOVRENDCRD, ((ov.dst_x + disp_w-1) & 0xFFF)|
 665             (((ov.dst_y + disp_h-1) & 0xFFF)<<12));
 666   // H Scaling
 667   tdfx_outl(VIDOVRDUDX,( ((u32)ov.src_width) << 20) / ov.dst_width);
 668   // Src offset and width (in bytes)
 669   tdfx_outl(VIDOVRDUDXOFF,((ov.src_width<<1) & 0xFFF) << 19);
 670   // V Scaling
 671   tdfx_outl(VIDOVRDVDY, ( ((u32)ov.src_height) << 20) / ov.dst_height);
 672   //else
 673   //  tdfx_outl(VIDOVRDVDY,0);
 674   // V Offset
 675   tdfx_outl(VIDOVRDVDYOFF,0);
 676   // Overlay stride
 677   stride = tdfx_inl(VIDDESKSTRIDE) & 0xFFFF;
 678   tdfx_outl(VIDDESKSTRIDE,stride | (((u32)ov.src_stride) << 16));
 679   // Buffers address
 680   tdfx_outl(LEFTOVBUF, ov.src[0]);
 681   tdfx_outl(RIGHTOVBUF, ov.src[1]);
 682
 683   // Send a swap buffer cmd if we are not on one of the 2 buffers
 684   vidbuf = tdfx_inl(VIDCUROVRSTART);
 685   if(vidbuf != ov.src[0] && vidbuf != ov.src[1]) {
 686     tdfx_outl(SWAPPENDING,0);
 687     tdfx_outl(SWAPBUFCMD, 1);
 688   }
 689   //printk(KERN_DEBUG "tdfx_vid: Buf0=0x%x Buf1=0x%x Current=0x%x\n",
 690   //     ov.src[0],ov.src[1],tdfx_inl(VIDCUROVRSTART));
 691   // Colorkey
 692   if(ov.use_colorkey) {
 693     tdfx_outl(VIDCHRMIN,ov.colorkey[0]);
 694     tdfx_outl(VIDCHRMAX,ov.colorkey[1]);
 695   }
 696
 697   return 0;
 698 }
 699
 700 static int tdfx_vid_overlay_on(void) {
 701   uint32_t vidcfg = tdfx_inl(VIDPROCCFG);
 702   //return 0;
 703   if(vidcfg & (1<<8)) { // Overlay is already on
 704     //printk(KERN_DEBUG "tdfx_vid: Overlay is already on.\n");
 705     return (-EFAULT);
 706   }
 707   vidcfg |= (1<<8);
 708   tdfx_outl(VIDPROCCFG,vidcfg);
 709   return 0;
 710 }
 711
 712 static int tdfx_vid_overlay_off(void) {
 713   uint32_t vidcfg = tdfx_inl(VIDPROCCFG);
 714
 715   if(vidcfg & (1<<8)) {
 716     vidcfg &= ~(1<<8);
 717     tdfx_outl(VIDPROCCFG,vidcfg);
 718     return 0;
 719   }
 720
 721   printk(KERN_DEBUG "tdfx_vid: Overlay is already off.\n");
 722   return (-EFAULT);
 723 }
 724
 725
 726 static int tdfx_vid_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
 727 {
 728   tdfx_vid_agp_move_t move;
 729   tdfx_vid_config_t cfg;
 730   tdfx_vid_blit_t blit;
 731   u16 int16;
 732
 733   switch(cmd) {
 734   case TDFX_VID_AGP_MOVE:
 735     if(copy_from_user(&move,(tdfx_vid_agp_move_t*)arg,sizeof(tdfx_vid_agp_move_t))) {
 736       printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
 737       return(-EFAULT);
 738     }
 739     return agp_move(&move);
 740   case TDFX_VID_BUMP0:
 741     if(copy_from_user(&int16,(u16*)arg,sizeof(u16))) {
 742       printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
 743       return(-EFAULT);
 744     }
 745     return bump_fifo(int16);
 746   case TDFX_VID_BLIT:
 747     if(copy_from_user(&blit,(tdfx_vid_blit_t*)arg,sizeof(tdfx_vid_blit_t))) {
 748       printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
 749       return(-EFAULT);
 750     }
 751     if(!tdfx_vid_blit(&blit)) {
 752       printk(KERN_INFO "tdfx_vid: Blit failed\n");
 753       return(-EFAULT);
 754     }
 755     return 0;
 756   case TDFX_VID_GET_CONFIG:
 757     if(copy_from_user(&cfg,(tdfx_vid_config_t*)arg,sizeof(tdfx_vid_config_t))) {
 758       printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
 759       return(-EFAULT);
 760     }
 761     tdfx_vid_get_config(&cfg);
 762     if(copy_to_user((tdfx_vid_config_t*)arg,&cfg,sizeof(tdfx_vid_config_t))) {
 763       printk(KERN_INFO "tdfx_vid:failed copy to userspace\n");
 764       return(-EFAULT);
 765     }
 766     return 0;
 767   case TDFX_VID_SET_YUV:
 768     return tdfx_vid_set_yuv(arg);
 769   case TDFX_VID_GET_YUV:
 770     return tdfx_vid_get_yuv(arg);
 771   case TDFX_VID_SET_OVERLAY:
 772     return tdfx_vid_set_overlay(arg);
 773   case TDFX_VID_OVERLAY_ON:
 774     return tdfx_vid_overlay_on();
 775   case TDFX_VID_OVERLAY_OFF:
 776     return tdfx_vid_overlay_off();
 777   default:
 778     printk(KERN_ERR "tdfx_vid: Invalid ioctl %d\n",cmd);
 779     return (-EINVAL);
 780   }
 781   return 0;
 782 }
 783
 784
 785
 786 static ssize_t tdfx_vid_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 787 {
 788         return 0;
 789 }
 790
 791 static ssize_t tdfx_vid_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 792 {
 793
 794         return 0;
 795 }
 796
 797 static void tdfx_vid_mopen(struct vm_area_struct *vma) {
 798   int i;
 799   struct page *page;
 800   unsigned long phys;
 801
 802   printk(KERN_DEBUG "tdfx_vid: mopen\n");
 803
 804   for(i = 0 ; i < agp_mem->page_count ; i++) {
 805     phys = agp_mem->memory[i] & ~(0x00000fff);
 806     page = virt_to_page(phys_to_virt(phys));
 807     if(!page) {
 808       printk(KERN_DEBUG "tdfx_vid: Can't get the page %d\%d\n",i,agp_mem->page_count);
 809       return;
 810     }
 811     get_page(page);
 812   }
 813   MOD_INC_USE_COUNT;
 814 }
 815
 816 static void tdfx_vid_mclose(struct vm_area_struct *vma)  {
 817   int i;
 818   struct page *page;
 819   unsigned long phys;
 820
 821   printk(KERN_DEBUG "tdfx_vid: mclose\n");
 822
 823   for(i = 0 ; i < agp_mem->page_count ; i++) {
 824     phys = agp_mem->memory[i] & ~(0x00000fff);
 825     page = virt_to_page(phys_to_virt(phys));
 826     if(!page) {
 827       printk(KERN_DEBUG "tdfx_vid: Can't get the page %d\%d\n",i,agp_mem->page_count);
 828       return;
 829     }
 830     put_page(page);
 831   }
 832
 833   MOD_DEC_USE_COUNT;
 834 }
 835
 836 static struct page *tdfx_vid_nopage(struct vm_area_struct *vma,
 837                                     unsigned long address,
 838                                     int write_access) {
 839   unsigned long off;
 840   uint32_t n;
 841   struct page *page;
 842   unsigned long phys;
 843
 844   off = address - vma->vm_start + (vma->vm_pgoff<<PAGE_SHIFT);
 845   n = off / PAGE_SIZE;
 846
 847   if(n >= agp_mem->page_count) {
 848     printk(KERN_DEBUG "tdfx_vid: Too far away\n");
 849     return ((struct page *)0UL);
 850   }
 851   phys = agp_mem->memory[n] & ~(0x00000fff);
 852   page = virt_to_page(phys_to_virt(phys));
 853   if(!page) {
 854     printk(KERN_DEBUG "tdfx_vid: Can't get the page\n");
 855     return ((struct page *)0UL);
 856   }
 857   return page;
 858 }
 859
 860 /* memory handler functions */
 861 static struct vm_operations_struct tdfx_vid_vm_ops = {
 862   open:   tdfx_vid_mopen, /* mmap-open */
 863   close:  tdfx_vid_mclose,/* mmap-close */
 864   nopage: tdfx_vid_nopage, /* no-page fault handler */
 865 };
 866
 867
 868 static int tdfx_vid_mmap(struct file *file, struct vm_area_struct *vma)
 869 {
 870   size_t size;
 871 #ifdef MP_DEBUG
 872   printk(KERN_DEBUG "tdfx_vid: mapping agp memory into userspace\n");
 873 #endif
 874
 875   size = (vma->vm_end-vma->vm_start + PAGE_SIZE - 1) / PAGE_SIZE;
 876
 877   if(map_start) { // Ok we map directly in the physcal ram
 878     if(size*PAGE_SIZE > map_max) {
 879       printk(KERN_ERR "tdfx_vid: Not enouth mem\n");
 880       return(-EAGAIN);
 881     }
 882 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,3)
 883     if(remap_page_range(vma, vma->vm_start,map_start,
 884                         vma->vm_end - vma->vm_start, vma->vm_page_prot))
 885 #else
 886     if(remap_page_range(vma->vm_start, (unsigned long)map_start,
 887                         vma->vm_end - vma->vm_start, vma->vm_page_prot))
 888 #endif
 889       {
 890         printk(KERN_ERR "tdfx_vid: error mapping video memory\n");
 891         return(-EAGAIN);
 892       }
 893     printk(KERN_INFO "Physical mem 0x%lx mapped in userspace\n",map_start);
 894     return 0;
 895   }
 896
 897   if(agp_mem)
 898     return(-EAGAIN);
 899
 900   agp_mem = drm_agp->allocate_memory(size,AGP_NORMAL_MEMORY);
 901   if(!agp_mem) {
 902     printk(KERN_ERR "Failed to allocate AGP memory\n");
 903     return(-ENOMEM);
 904   }
 905
 906   if(drm_agp->bind_memory(agp_mem,0)) {
 907     printk(KERN_ERR "Failed to bind the AGP memory\n");
 908     drm_agp->free_memory(agp_mem);
 909     agp_mem = NULL;
 910     return(-ENOMEM);
 911   }
 912
 913   printk(KERN_INFO "%d pages of AGP mem allocated (%ld/%ld bytes) :)))\n",
 914          size,vma->vm_end-vma->vm_start,size*PAGE_SIZE);
 915
 916
 917   if(tdfx_map_io) {
 918 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,3)
 919     if(remap_page_range(vma, vma->vm_start,agp_info.aper_base,
 920                         vma->vm_end - vma->vm_start, vma->vm_page_prot))
 921 #else
 922     if(remap_page_range(vma->vm_start, (unsigned long)agp_info.aper_base,
 923                         vma->vm_end - vma->vm_start, vma->vm_page_prot))
 924 #endif
 925       {
 926         printk(KERN_ERR "tdfx_vid: error mapping video memory\n");
 927         return(-EAGAIN);
 928       }
 929   } else {
 930     // Never swap it out
 931     vma->vm_flags |= VM_LOCKED | VM_IO;
 932     vma->vm_ops = &tdfx_vid_vm_ops;
 933     vma->vm_ops->open(vma);
 934     printk(KERN_INFO "Page fault handler ready !!!!!\n");
 935   }
 936
 937   return 0;
 938 }
 939
 940
 941 static int tdfx_vid_release(struct inode *inode, struct file *file)
 942 {
 943 #ifdef MP_DEBUG
 944   printk(KERN_DEBUG "tdfx_vid: Video OFF (release)\n");
 945 #endif
 946
 947   // Release the agp mem
 948   if(agp_mem) {
 949     drm_agp->unbind_memory(agp_mem);
 950     drm_agp->free_memory(agp_mem);
 951     agp_mem = NULL;
 952   }
 953
 954   tdfx_vid_in_use = 0;
 955
 956   MOD_DEC_USE_COUNT;
 957   return 0;
 958 }
 959
 960 static long long tdfx_vid_lseek(struct file *file, long long offset, int origin)
 961 {
 962         return -ESPIPE;
 963 }
 964
 965 static int tdfx_vid_open(struct inode *inode, struct file *file)
 966 {
 967 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,2)
 968         int minor = MINOR(inode->i_rdev.value);
 969 #else
 970         int minor = MINOR(inode->i_rdev);
 971 #endif
 972
 973         if(minor != 0)
 974          return(-ENXIO);
 975
 976         if(tdfx_vid_in_use == 1)
 977                 return(-EBUSY);
 978
 979         tdfx_vid_in_use = 1;
 980         MOD_INC_USE_COUNT;
 981         return(0);
 982 }
 983
 984 #if LINUX_VERSION_CODE >= 0x020400
 985 static struct file_operations tdfx_vid_fops =
 986 {
 987   llseek:  tdfx_vid_lseek,
 988   read:    tdfx_vid_read,
 989   write:   tdfx_vid_write,
 990   ioctl:   tdfx_vid_ioctl,
 991   mmap:    tdfx_vid_mmap,
 992   open:    tdfx_vid_open,
 993   release: tdfx_vid_release
 994 };
 995 #else
 996 static struct file_operations tdfx_vid_fops =
 997 {
 998   tdfx_vid_lseek,
 999   tdfx_vid_read,
1000   tdfx_vid_write,
1001   NULL,
1002   NULL,
1003   tdfx_vid_ioctl,
1004   tdfx_vid_mmap,
1005   tdfx_vid_open,
1006   NULL,
1007   tdfx_vid_release
1008 };
1009 #endif
1010
1011
1012 int init_module(void)
1013 {
1014   tdfx_vid_in_use = 0;
1015
1016   if(register_chrdev(TDFX_VID_MAJOR, "tdfx_vid", &tdfx_vid_fops)) {
1017     printk(KERN_ERR "tdfx_vid: unable to get major: %d\n", TDFX_VID_MAJOR);
1018     return -EIO;
1019   }
1020
1021   if(!agp_init()) {
1022     printk(KERN_ERR "tdfx_vid: AGP init failed\n");
1023     unregister_chrdev(TDFX_VID_MAJOR, "tdfx_vid");
1024     return -EINVAL;
1025   }
1026
1027   if (!tdfx_vid_find_card()) {
1028     printk(KERN_ERR "tdfx_vid: no supported devices found\n");
1029     agp_close();
1030     unregister_chrdev(TDFX_VID_MAJOR, "tdfx_vid");
1031     return -EINVAL;
1032   }
1033
1034
1035
1036   return (0);
1037
1038 }
1039
1040 void cleanup_module(void)
1041 {
1042   if(tdfx_mmio_base)
1043     iounmap(tdfx_mmio_base);
1044   agp_close();
1045   printk(KERN_INFO "tdfx_vid: Cleaning up module\n");
1046   unregister_chrdev(TDFX_VID_MAJOR, "tdfx_vid");
1047 }