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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/apm/apm_cursor.c,v 1.14 2000/06/30 18:27:02 dawes Exp $ */
#include <X11/X.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "input.h"
#include "cursorstr.h"
#include "regionstr.h"
#include "scrnintstr.h"
#include "servermd.h"
#include "windowstr.h"
#include "mfb.h"
#include "mipointer.h"
#include "apm.h"
#define CURSORWIDTH 64
#define CURSORHEIGHT 64
#define CURSORSIZE (CURSORWIDTH * CURSORHEIGHT / 8)
#define CURSORALIGN ((CURSORSIZE + 1023) & ~1023l)
static void ApmShowCursor(ScrnInfoPtr pScrn);
static void ApmHideCursor(ScrnInfoPtr pScrn);
static void ApmSetCursorPosition(ScrnInfoPtr pScrn, int x, int y);
static void ApmSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg);
static void ApmLoadCursorImage(ScrnInfoPtr pScrn, u8* data);
static Bool ApmUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs);
static u8 ConvertTable[256];
/* Inline functions */
static __inline__ void
WaitForFifo(ApmPtr pApm, int slots)
{
if (!pApm->UsePCIRetry) {
volatile int i;
#define MAXLOOP 1000000
for(i = 0; i < MAXLOOP; i++) {
if ((STATUS() & STATUS_FIFO) >= slots)
break;
}
if (i == MAXLOOP) {
unsigned int status = STATUS();
WRXB(0x1FF, 0);
if (!xf86ServerIsExiting())
FatalError("Hung in WaitForFifo() (Status = 0x%08X)\n", status);
}
}
}
void ApmHWCursorReserveSpace(ApmPtr pApm)
{
pApm->OffscreenReserved += 2 * CURSORALIGN;
pApm->DisplayedCursorAddress = pApm->BaseCursorAddress =
pApm->CursorAddress = 1024 * xf86Screens[pApm->pScreen->myNum]->videoRam -
pApm->OffscreenReserved;
}
int ApmHWCursorInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
APMDECL(pScrn);
xf86CursorInfoPtr infoPtr;
u32 i;
infoPtr = xf86CreateCursorInfoRec();
if (!infoPtr)
return FALSE;
pApm->CursorInfoRec = infoPtr;
infoPtr->MaxWidth = CURSORWIDTH;
infoPtr->MaxHeight = CURSORHEIGHT;
infoPtr->Flags = HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1;
infoPtr->SetCursorColors = ApmSetCursorColors;
infoPtr->SetCursorPosition = ApmSetCursorPosition;
infoPtr->LoadCursorImage = ApmLoadCursorImage;
infoPtr->HideCursor = ApmHideCursor;
infoPtr->ShowCursor = ApmShowCursor;
infoPtr->UseHWCursor = ApmUseHWCursor;
/* Set up the convert table for the input cursor data */
for (i = 0; i < 256; i++)
ConvertTable[i] = ((~i) & 0xAA) | (i & (i >> 1) & 0x55);
return xf86InitCursor(pScreen, infoPtr);
}
static void
ApmShowCursor(ScrnInfoPtr pScrn)
{
APMDECL(pScrn);
WaitForFifo(pApm, 2);
WRXW(0x144, pApm->CursorAddress >> 10);
WRXB(0x140, 1);
pApm->DisplayedCursorAddress = pApm->CursorAddress;
}
static void
ApmHideCursor(ScrnInfoPtr pScrn)
{
APMDECL(pScrn);
WaitForFifo(pApm, 1);
WRXB(0x140, 0);
}
static Bool ApmUseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
{
return APMPTR(xf86Screens[pScreen->myNum])->CurrentLayout.bitsPerPixel >= 8;
}
static void
ApmSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
APMDECL(pScrn);
int xoff, yoff;
if (x < -CURSORWIDTH || y < -CURSORHEIGHT) {
WaitForFifo(pApm, 1);
WRXB(0x140, 0);
return;
}
if (x < 0) {
xoff = -x;
x = 0;
}
else
xoff = 0;
if (y < 0) {
yoff = -y;
y = 0;
}
else
yoff = 0;
WaitForFifo(pApm, 2);
WRXW(0x14C, (yoff << 8) | (xoff & 0xFF));
WRXL(0x148, (y << 16) | (x & 0xFFFF));
}
static void
ApmSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
APMDECL(pScrn);
u16 packedcolfg, packedcolbg;
if (pApm->CurrentLayout.bitsPerPixel == 8)
{
WaitForFifo(pApm, 2);
WRXB(0x141, fg);
WRXB(0x142, bg);
}
else
{
packedcolfg =
((fg & 0xE00000) >> 16) |
((fg & 0x00E000) >> 11) |
((fg & 0x0000C0) >> 6);
packedcolbg =
((bg & 0xE00000) >> 16) |
((bg & 0x00E000) >> 11) |
((bg & 0x0000C0) >> 6);
WaitForFifo(pApm, 2);
WRXB(0x141, packedcolfg);
WRXB(0x142, packedcolbg);
}
}
static void
ApmLoadCursorImage(ScrnInfoPtr pScrn, u8* data)
{
APMDECL(pScrn);
u32 i;
u8 tmp[2 * CURSORSIZE];
/* Correct input data */
for (i = 0; i < sizeof tmp; i++)
tmp[i] = ConvertTable[data[i]];
/*
* To avoid flicker.
* Note: 2*pApm->BaseCursorAddress + CURSORALIGN (=1024) < 2^31 all the time.
*/
pApm->CursorAddress = 2*pApm->BaseCursorAddress + CURSORALIGN - pApm->DisplayedCursorAddress;
memcpy((u8*)pApm->FbBase + pApm->CursorAddress, tmp, sizeof tmp);
}
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