sys/src/9/pc/vgaigfx.c

   1 #include "u.h"
   2 #include "../port/lib.h"
   3 #include "mem.h"
   4 #include "dat.h"
   5 #include "fns.h"
   6 #include "io.h"
   7 #include "../port/error.h"
   8
   9 #define Image   IMAGE
  10 #include <draw.h>
  11 #include <memdraw.h>
  12 #include <cursor.h>
  13 #include "screen.h"
  14
  15 static uintptr
  16 igfxcuralloc(Pcidev *pci, void *mmio, int apsize)
  17 {
  18         int n;
  19         u32int pa, *buf, *p, *e;
  20
  21         buf = mallocalign(64*64*4, BY2PG, 0, 0);
  22         if(buf == nil){
  23                 print("igfx: no memory for cursor image\n");
  24                 return 0;
  25         }
  26         n = (apsize > 128*MB ? 128*1024 : apsize/1024) / 4 - 4;
  27         p = (u32int*)((uchar*)mmio + pci->mem[0].size/2) + n;
  28         *(u32int*)((uchar*)mmio + 0x2170) = 0;  /* flush write buffers */
  29         for(e=p+4, pa=PADDR(buf); p<e; p++, pa+=1<<12)
  30                 *p = pa | 1;
  31         *(u32int*)((uchar*)mmio + 0x2170) = 0;  /* flush write buffers */
  32         return (uintptr)n << 12;
  33 }
  34
  35 static void
  36 igfxenable(VGAscr* scr)
  37 {
  38         Pcidev *p;
  39
  40         if(scr->mmio != nil)
  41                 return;
  42         p = scr->pci;
  43         if(p == nil)
  44                 return;
  45         scr->mmio = vmap(p->mem[0].bar&~0x0F, p->mem[0].size);
  46         if(scr->mmio == nil)
  47                 return;
  48         addvgaseg("igfxmmio", p->mem[0].bar&~0x0F, p->mem[0].size);
  49         if(scr->paddr == 0)
  50                 vgalinearpci(scr);
  51         if(scr->apsize){
  52                 addvgaseg("igfxscreen", scr->paddr, scr->apsize);
  53                 scr->storage = igfxcuralloc(p, scr->mmio, scr->apsize);
  54         }
  55         scr->softscreen = 1;
  56 }
  57
  58 static void
  59 igfxblank(VGAscr *scr, int blank)
  60 {
  61         u32int off;
  62
  63         switch(scr->pci->did){
  64         default:
  65                 return;
  66
  67         case 0x2a02:    /* GM965 */
  68         case 0x2a42:    /* GM45 */
  69                 off = 0x61204;
  70                 break;
  71
  72         case 0x0126:    /* SNB */
  73         case 0x0166:    /* IVB */
  74                 off = 0xC7204;
  75                 break;
  76         }
  77
  78         /* toggle PP_CONTROL backlight & power state */
  79         if(blank)
  80                 scr->mmio[off/4] &= ~0x5;
  81         else
  82                 scr->mmio[off/4] |= 0x5;
  83 }
  84
  85 static void
  86 igfxdrawinit(VGAscr *scr)
  87 {
  88         scr->blank = igfxblank;
  89 }
  90
  91 VGAdev vgaigfxdev = {
  92         "igfx",
  93         igfxenable,
  94         nil,
  95         nil,
  96         nil,
  97         igfxdrawinit,
  98 };
  99
 100 static void
 101 igfxcurload(VGAscr* scr, Cursor* curs)
 102 {
 103         uchar set, clr;
 104         u32int *p;
 105         int i, j;
 106
 107         if(scr->storage == 0)
 108                 return;
 109         p = (u32int*)((uchar*)scr->vaddr + scr->storage);
 110         memset(p, 0, 64*64*4);
 111         for(i=0;i<32;i++) {
 112                 set = curs->set[i];
 113                 clr = curs->clr[i];
 114                 for(j=0x80; j; j>>=1){
 115                         if((set|clr)&j)
 116                                 *p++ = (0xFF<<24) | (set&j ? 0x000000 : 0xFFFFFF);
 117                         else
 118                                 *p++ = 0;
 119                 }
 120                 if(i & 1)
 121                         p += 64-16;
 122         }
 123         scr->offset = curs->offset;
 124 }
 125
 126 enum {
 127         CURCTL = 0,
 128         CURBASE,
 129         CURPOS,
 130
 131         NPIPE = 4,
 132 };
 133
 134 static u32int*
 135 igfxcurregs(VGAscr* scr, int pipe)
 136 {
 137         u32int o;
 138
 139         if(scr->mmio == nil || scr->storage == 0)
 140                 return nil;
 141         o = pipe == 3 ? 0xf000 : pipe*0x1000;
 142         /* check PIPExCONF if enabled */
 143         if((scr->mmio[(0x70008 | o)/4] & (1<<31)) == 0)
 144                 return nil;
 145         switch(scr->pci->did){
 146         case 0x0412:    /* Haswell HD Graphics 4600 */
 147         case 0x0a16:    /* Haswell HD Graphics 4400 */
 148                 if(pipe > 3)
 149                         return nil;
 150                 if(pipe == 3)
 151                         o = 0;
 152                 break;
 153         case 0x0166:    /* Ivy Bridge */
 154         case 0x0152:    /* Core-i3 */
 155         case 0x0126:    /* Sandy Bridge HD Graphics 3000 */
 156                 if(pipe > 2)
 157                         return nil;
 158                 break;
 159         case 0x2a42:    /* X200 */
 160         case 0x29a2:    /* 82P965/G965 HECI desktop */
 161         case 0x2a02:    /* CF-R7 */
 162         case 0x0102:    /* Sndy Bridge */
 163                 if(pipe > 1)
 164                         return nil;
 165                 o = pipe*0x40;
 166                 break;
 167         default:
 168                 if(pipe > 0)
 169                         return nil;
 170         }
 171         return (u32int*)((uchar*)scr->mmio + (0x70080 + o));
 172 }
 173
 174 static int
 175 igfxcurmove(VGAscr* scr, Point p)
 176 {
 177         int i, x, y;
 178         u32int *r;
 179
 180         for(i=0; i<NPIPE; i++){
 181                 if((r = igfxcurregs(scr, i)) != nil){
 182                         x = p.x + scr->offset.x;
 183                         if(x < 0) x = -x | 0x8000;
 184                         y = p.y + scr->offset.y;
 185                         if(y < 0) y = -y | 0x8000;
 186                         r[CURPOS] = (y << 16) | x;
 187                 }
 188         }
 189         return 0;
 190 }
 191
 192 static void
 193 igfxcurenable(VGAscr* scr)
 194 {
 195         u32int *r;
 196         int i;
 197
 198         igfxenable(scr);
 199         igfxcurload(scr, &arrow);
 200         igfxcurmove(scr, ZP);
 201
 202         for(i=0; i<NPIPE; i++){
 203                 if((r = igfxcurregs(scr, i)) != nil){
 204                         r[CURCTL] = (r[CURCTL] & ~(3<<28 | 1<<5)) | (i<<28) | 7;
 205                         r[CURBASE] = scr->storage;
 206                 }
 207         }
 208 }
 209
 210 static void
 211 igfxcurdisable(VGAscr* scr)
 212 {
 213         u32int *r;
 214         int i;
 215
 216         for(i=0; i<NPIPE; i++){
 217                 if((r = igfxcurregs(scr, i)) != nil){
 218                         r[CURCTL] &= ~(1<<5 | 7);
 219                         r[CURBASE] = 0;
 220                 }
 221         }
 222 }
 223
 224 VGAcur vgaigfxcur = {
 225         "igfxhwgc",
 226         igfxcurenable,
 227         igfxcurdisable,
 228         igfxcurload,
 229         igfxcurmove,
 230 };