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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "../port/pci.h"
#include "../port/error.h"
#define Image IMAGE
#include <draw.h>
#include <memdraw.h>
#include <cursor.h>
#include "screen.h"
static uintptr
igfxcuralloc(Pcidev *pci, void *mmio, int apsize)
{
int n;
u32int pa, *buf, *p, *e;
buf = mallocalign(64*64*4, BY2PG, 0, 0);
if(buf == nil){
print("igfx: no memory for cursor image\n");
return 0;
}
n = (apsize > 128*MB ? 128*1024 : apsize/1024) / 4 - 4;
p = (u32int*)((uchar*)mmio + pci->mem[0].size/2) + n;
*(u32int*)((uchar*)mmio + 0x2170) = 0; /* flush write buffers */
for(e=p+4, pa=PADDR(buf); p<e; p++, pa+=1<<12)
*p = pa | 1;
*(u32int*)((uchar*)mmio + 0x2170) = 0; /* flush write buffers */
return (uintptr)n << 12;
}
static void
igfxenable(VGAscr* scr)
{
Pcidev *p;
if(scr->mmio != nil)
return;
p = scr->pci;
if(p == nil)
return;
if(p->mem[0].bar & 1)
return;
scr->mmio = vmap(p->mem[0].bar&~0x0F, p->mem[0].size);
if(scr->mmio == nil)
return;
addvgaseg("igfxmmio", p->mem[0].bar&~0x0F, p->mem[0].size);
if(scr->paddr == 0)
vgalinearpci(scr);
if(scr->apsize){
addvgaseg("igfxscreen", scr->paddr, scr->apsize);
scr->storage = igfxcuralloc(p, scr->mmio, scr->apsize);
}
scr->softscreen = 1;
}
static void
igfxblank(VGAscr *scr, int blank)
{
u32int off;
switch(scr->pci->did){
default:
return;
case 0x2a02: /* GM965 */
case 0x27a2: /* GM45 */
case 0x2a42: /* GM45 */
case 0x2592: /* GM915 */
off = 0x61204;
break;
case 0x0102: /* ILK */
case 0x0046: /* ILK/ARD */
case 0x0126: /* SNB */
case 0x0166: /* IVB */
case 0x0a16: /* HSW */
case 0x1616: /* BDW */
off = 0xC7204;
break;
}
/* toggle PP_CONTROL backlight & power state */
if(blank)
scr->mmio[off/4] &= ~0x5;
else
scr->mmio[off/4] |= 0x5;
}
static void
igfxdrawinit(VGAscr *scr)
{
scr->blank = igfxblank;
}
VGAdev vgaigfxdev = {
"igfx",
igfxenable,
nil,
nil,
nil,
igfxdrawinit,
};
static void
igfxcurload(VGAscr* scr, Cursor* curs)
{
uchar set, clr;
u32int *p;
int i, j;
if(scr->storage == 0)
return;
p = (u32int*)((uchar*)scr->vaddr + scr->storage);
memset(p, 0, 64*64*4);
for(i=0;i<32;i++) {
set = curs->set[i];
clr = curs->clr[i];
for(j=0x80; j; j>>=1){
if((set|clr)&j)
*p++ = (0xFF<<24) | (set&j ? 0x000000 : 0xFFFFFF);
else
*p++ = 0;
}
if(i & 1)
p += 64-16;
}
scr->offset = curs->offset;
}
enum {
CURCTL = 0,
CURBASE,
CURPOS,
NPIPE = 4,
};
static u32int*
igfxcurregs(VGAscr* scr, int pipe)
{
u32int o;
if(scr->mmio == nil || scr->storage == 0)
return nil;
o = pipe == 3 ? 0xf000 : pipe*0x1000;
/* check PIPExCONF if enabled */
if((scr->mmio[(0x70008 | o)/4] & (1<<31)) == 0)
return nil;
switch(scr->pci->did){
case 0x0412: /* Haswell HD Graphics 4600 */
case 0x0a16: /* Haswell HD Graphics 4400 */
case 0x0a06:
case 0x1616: /* Broadwell HD 5500 */
if(pipe > 3)
return nil;
if(pipe == 3)
o = 0;
break;
case 0x0166: /* Ivy Bridge */
case 0x0152: /* Core-i3 */
case 0x0126: /* Sandy Bridge HD Graphics 3000 */
if(pipe > 2)
return nil;
break;
case 0x2592: /* GM915 */
case 0x2a42: /* X200 */
case 0x29a2: /* 82P965/G965 HECI desktop */
case 0x2a02: /* CF-R7 */
case 0x0102: /* Sndy Bridge */
if(pipe > 1)
return nil;
o = pipe*0x40;
break;
default:
if(pipe > 0)
return nil;
}
return (u32int*)((uchar*)scr->mmio + (0x70080 + o));
}
static int
igfxcurmove(VGAscr* scr, Point p)
{
int i, x, y;
u32int *r;
for(i=0; i<NPIPE; i++){
if((r = igfxcurregs(scr, i)) != nil){
x = p.x + scr->offset.x;
if(x < 0) x = -x | 0x8000;
y = p.y + scr->offset.y;
if(y < 0) y = -y | 0x8000;
r[CURPOS] = (y << 16) | x;
}
}
return 0;
}
static void
igfxcurenable(VGAscr* scr)
{
u32int *r;
int i;
igfxenable(scr);
igfxcurload(scr, &cursor);
igfxcurmove(scr, ZP);
for(i=0; i<NPIPE; i++){
if((r = igfxcurregs(scr, i)) != nil){
r[CURCTL] = (r[CURCTL] & ~(3<<28 | 1<<5)) | (i<<28) | 7;
r[CURBASE] = scr->storage;
}
}
}
static void
igfxcurdisable(VGAscr* scr)
{
u32int *r;
int i;
for(i=0; i<NPIPE; i++){
if((r = igfxcurregs(scr, i)) != nil){
r[CURCTL] &= ~(1<<5 | 7);
r[CURBASE] = 0;
}
}
}
VGAcur vgaigfxcur = {
"igfxhwgc",
igfxcurenable,
igfxcurdisable,
igfxcurload,
igfxcurmove,
};
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