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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* (c) Itai Nahshon */
#include "xf86.h"
#include "xf86_OSproc.h"
#include "compiler.h"
#include "xf86Pci.h"
#include "vgaHW.h"
#include "cir.h"
#define _ALP_PRIVATE_
#include "alp.h"
#define CURSORWIDTH pAlp->CursorWidth
#define CURSORHEIGHT pAlp->CursorHeight
#define CURSORSIZE (CURSORWIDTH*CURSORHEIGHT/8)
#define MAXCURSORSIZE (64*64>>3)
static void
AlpSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
const AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpSetCursorColors\n");
#endif
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]|0x02);
hwp->writeDacWriteAddr(hwp, 0x00);
hwp->writeDacData(hwp, 0x3f & (bg >> 18));
hwp->writeDacData(hwp, 0x3f & (bg >> 10));
hwp->writeDacData(hwp, 0x3f & (bg >> 2));
hwp->writeDacWriteAddr(hwp, 0x0F);
hwp->writeDacData(hwp, 0x3F & (fg >> 18));
hwp->writeDacData(hwp, 0x3F & (fg >> 10));
hwp->writeDacData(hwp, 0x3F & (fg >> 2));
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
}
static void
AlpLoadSkewedCursor(CirPtr pCir, int x, int y) {
const AlpPtr pAlp = ALPPTR(pCir);
unsigned char *memx = pAlp->HWCursorBits;
unsigned char *CursorBits = pAlp->CursorBits;
unsigned char mem[2*MAXCURSORSIZE];
unsigned char *p1, *p2;
int i, a, b;
Bool cur64 = (CURSORWIDTH == 64);
int shift = (cur64? 1 : 0);
if (x > 0) x = 0; else x = -x;
if (y > 0) y = 0; else y = -y;
a = ((y*CURSORWIDTH<<shift)+x)>>3;
b = x & 7;
/* Copy the skewed mask bits */
p1 = mem;
p2 = CursorBits + a;
for (i = 0; i < (CURSORSIZE << shift)-a-1; i++) {
*p1++ = (p2[0] << b) | (p2[1] >> (8-b));
p2++;
}
/* last mask byte */
*p1++ = (p2[0] << b);
/* Clear to end (bottom) of mask. */
for (i = i+1; i < (CURSORSIZE << shift); i++)
*p1++ = 0;
if (!cur64) {
/* Now copy the cursor bits */
/* p1 is already right */
p2 = CursorBits+CURSORSIZE+a;
for (i = 0; i < CURSORSIZE-a-1; i++) {
*p1++ = (p2[0] << b) | (p2[1] >> (8-b));
p2++;
}
/* last cursor byte */
*p1++ = (p2[0] << b);
}
/* Clear to end (bottom) of cursor. */
for (i = i+1; i < CURSORSIZE; i++)
*p1++ = 0;
/* Clear the right unused area of the mask
and cyrsor bits. */
p2 = mem + CURSORWIDTH/8 - (x>>3) - 1;
for (i = 0; i < 2*CURSORHEIGHT; i++) {
int m = (-1)<<(x&7);
p1 = p2;
p2 += CURSORWIDTH/8;
for (int j = x>>3; j >= 0; j--) {
*p1 &= m;
m = 0;
p1++;
}
}
memcpy(memx, mem, 2*CURSORSIZE);
}
static void
AlpSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
const CirPtr pCir = CIRPTR(pScrn);
const AlpPtr pAlp = ALPPTR(pCir);
vgaHWPtr hwp = VGAHWPTR(pScrn);
#if 0
#ifdef ALP_DEBUG
ErrorF("AlpSetCursorPosition %d %d\n", x, y);
#endif
#endif
if (x < 0 || y < 0) {
if (x+CURSORWIDTH <= 0 || y+CURSORHEIGHT <= 0) {
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12] & ~0x01);
return;
}
AlpLoadSkewedCursor(pCir, x, y);
pCir->CursorIsSkewed = TRUE;
if (x < 0) x = 0;
if (y < 0) y = 0;
} else if (pCir->CursorIsSkewed) {
memcpy(pAlp->HWCursorBits, pAlp->CursorBits, 2*CURSORSIZE);
pCir->CursorIsSkewed = FALSE;
}
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
hwp->writeSeq(hwp, ((x << 5)|0x10)&0xff, x >> 3);
hwp->writeSeq(hwp, ((y << 5)|0x11)&0xff, y >> 3);
}
static void
AlpLoadCursorImage(ScrnInfoPtr pScrn, unsigned char *bits)
{
const AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpLoadCursorImage\n");
#endif
pAlp->CursorBits = bits;
memcpy(pAlp->HWCursorBits, bits, 2*CURSORSIZE);
/* this should work for both 64 and 32 bit cursors */
pAlp->ModeReg.ExtVga[SR13] = 0x3f;
hwp->writeSeq(hwp, 0x13, pAlp->ModeReg.ExtVga[SR13]);
}
static void
AlpHideCursor(ScrnInfoPtr pScrn)
{
AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpHideCursor\n");
#endif
pAlp->ModeReg.ExtVga[SR12] &= ~0x01;
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
}
static void
AlpShowCursor(ScrnInfoPtr pScrn)
{
AlpPtr pAlp = ALPPTR(CIRPTR(pScrn));
vgaHWPtr hwp = VGAHWPTR(pScrn);
#ifdef ALP_DEBUG
ErrorF("AlpShowCursor\n");
#endif
pAlp->ModeReg.ExtVga[SR12] |= 0x01;
hwp->writeSeq(hwp, 0x12, pAlp->ModeReg.ExtVga[SR12]);
}
static Bool
AlpUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
#ifdef ALP_DEBUG
ErrorF("AlpUseHWCursor\n");
#endif
if (pScrn->bitsPerPixel < 8)
return FALSE;
return TRUE;
}
Bool
AlpHWCursorInit(ScreenPtr pScreen, int size)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
const CirPtr pCir = CIRPTR(pScrn);
const AlpPtr pAlp = ALPPTR(pCir);
xf86CursorInfoPtr infoPtr;
#ifdef ALP_DEBUG
ErrorF("AlpHWCursorInit\n");
#endif
if (!size) return FALSE;
infoPtr = xf86CreateCursorInfoRec();
if (!infoPtr) return FALSE;
pCir->CursorInfoRec = infoPtr;
pCir->CursorIsSkewed = FALSE;
pAlp->CursorBits = NULL;
if (size == 64)
CURSORWIDTH = CURSORHEIGHT = 64;
else
CURSORWIDTH = CURSORHEIGHT = 32;
pAlp->HWCursorBits = pCir->FbBase + 1024*pScrn->videoRam - 2*CURSORSIZE;
infoPtr->MaxWidth = CURSORWIDTH;
infoPtr->MaxHeight = CURSORHEIGHT;
if (CURSORWIDTH == 64)
infoPtr->Flags =
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
#endif
HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64 |
HARDWARE_CURSOR_TRUECOLOR_AT_8BPP;
else
infoPtr->Flags =
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
#endif
HARDWARE_CURSOR_TRUECOLOR_AT_8BPP;
infoPtr->SetCursorColors = AlpSetCursorColors;
infoPtr->SetCursorPosition = AlpSetCursorPosition;
infoPtr->LoadCursorImage = AlpLoadCursorImage;
infoPtr->HideCursor = AlpHideCursor;
infoPtr->ShowCursor = AlpShowCursor;
infoPtr->UseHWCursor = AlpUseHWCursor;
#ifdef ALP_DEBUG
ErrorF("AlpHWCursorInit before xf86InitCursor\n");
#endif
xf86DrvMsg(pScrn->scrnIndex,X_INFO,"Hardware cursor: %ix%i\n",
CURSORWIDTH,CURSORHEIGHT);
return(xf86InitCursor(pScreen, infoPtr));
}
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