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/*
* impact_regs.c 2005/07/15 23:36:16, Copyright (c) 2005 peter fuerst
*
* Based on:
* - linux/drivers/video/impact.c, 2005 pf.
* - linux/drivers/video/impactsr.c, (c) 2004 by Stanislaw Skowronek.
* - newport_regs.c
* # newport_regs.c,v 1.3 2000/11/29 20:58:10 agx Exp #
* # xc/programs/Xserver/hw/xfree86/drivers/newport/newport_regs.c,v
* 1.6 2001/12/21 15:37:23 tsi Exp #
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "impact.h"
/* FIFO status */
#define MSK_I2_CFIFO_CNT 0x7f
#define MSK_SR_CFIFO_CNT 0xff
#define IMPACTI2_CFIFO_MAX 64
#define IMPACTSR_CFIFO_MAX 128
#define IMPACT_BFIFO_MAX 16
/* Sometimes we just have to wait until we can do anything */
/*
* ImpactWaitCfifo
*/
unsigned
ImpactI2WaitCfifo(ImpactRegsPtr pImpactRegs, int nslots)
{
unsigned x;
while (((x = pImpactRegs->i2.fifostatus) & MSK_I2_CFIFO_CNT)
> IMPACTI2_CFIFO_MAX-nslots);
return x;
}
unsigned
ImpactSRWaitCfifo(ImpactRegsPtr pImpactRegs, int nslots)
{
unsigned x;
while (((x = pImpactRegs->sr.fifostatus) & MSK_SR_CFIFO_CNT)
> IMPACTSR_CFIFO_MAX-nslots);
return x;
}
/*
* ImpactWaitCfifoEmpty
*/
void
ImpactI2WaitCfifoEmpty(ImpactRegsPtr pImpactRegs)
{
while (pImpactRegs->i2.fifostatus & MSK_I2_CFIFO_CNT);
}
void
ImpactSRWaitCfifoEmpty(ImpactRegsPtr pImpactRegs)
{
while (pImpactRegs->sr.fifostatus & MSK_SR_CFIFO_CNT);
}
/*
* ImpactWaitDMAOver
*/
void
ImpactI2WaitDMAOver(ImpactRegsPtr pImpactRegs)
{
while (pImpactRegs->i2.dmabusy & 0x1F);
while (!(pImpactRegs->i2.status & 1));
while (!(pImpactRegs->i2.status & 2));
while (!(pImpactRegs->i2.rss.status & 0x100));
}
void
ImpactSRWaitDMAOver(ImpactRegsPtr pImpactRegs)
{
while (pImpactRegs->sr.dmabusy & 0x1F);
while (!(pImpactRegs->sr.status & 1));
while (!(pImpactRegs->sr.status & 2));
while (!(pImpactRegs->sr.rss.status & 0x100));
}
/*
* ImpactWaitDMAReady
*/
void
ImpactI2WaitDMAReady(ImpactRegsPtr pImpactRegs)
{
ImpactFifoCmd32(&pImpactRegs->i2.cfifo, 0x000e0100, 0);
while (pImpactRegs->i2.dmabusy & 0x1EFF);
while (!(pImpactRegs->i2.status & 2));
}
void
ImpactSRWaitDMAReady(ImpactRegsPtr pImpactRegs)
{
ImpactFifoCmd32(&pImpactRegs->sr.cfifo, 0x000e0100, 0);
while (pImpactRegs->sr.dmabusy & 0x1EFF);
while (!(pImpactRegs->sr.status & 2));
}
/*
* ImpactWaitBfifo
*/
static __inline__ unsigned
ImpactWaitBfifo(mgireg32_t *giostatus, int nslots)
{
unsigned x;
while (((x = *giostatus) & 0x1f) > IMPACT_BFIFO_MAX-nslots);
return x;
}
unsigned
ImpactI2WaitBfifo(ImpactRegsPtr pImpactRegs, int nslots)
{
return ImpactWaitBfifo(&pImpactRegs->i2.giostatus, nslots);
}
unsigned
ImpactSRWaitBfifo(ImpactRegsPtr pImpactRegs, int nslots)
{
return ImpactWaitBfifo(&pImpactRegs->sr.giostatus, nslots);
}
/*
* ImpactWaitBfifoEmpty
*/
static __inline__ void
ImpactWaitBfifoEmpty(mgireg32_t *giostatus)
{
while (*giostatus & 0x1f);
}
void
ImpactI2WaitBfifoEmpty(ImpactRegsPtr pImpactRegs)
{
ImpactWaitBfifoEmpty(&pImpactRegs->i2.giostatus);
}
void
ImpactSRWaitBfifoEmpty(ImpactRegsPtr pImpactRegs)
{
ImpactWaitBfifoEmpty(&pImpactRegs->sr.giostatus);
}
/*
* ImpactVc3[GS]et
*/
static __inline__ void
ImpactVc3Set(Impact_vc3regs_t* vc3, CARD8 idx, unsigned short val)
{
vc3->indexdata = (idx << 24) | (val << 8);
}
void
ImpactI2Vc3Set(ImpactRegsPtr pImpactRegs, CARD8 idx, unsigned short val)
{
ImpactVc3Set(&pImpactRegs->i2.vc3, idx, val);
}
void
ImpactSRVc3Set(ImpactRegsPtr pImpactRegs, CARD8 idx, unsigned short val)
{
ImpactVc3Set(&pImpactRegs->sr.vc3, idx, val);
}
static __inline__ unsigned short
ImpactVc3Get(Impact_vc3regs_t* vc3, CARD8 idx)
{
vc3->index = idx;
return vc3->data;
}
unsigned short
ImpactI2Vc3Get(ImpactRegsPtr pImpactRegs, CARD8 idx)
{
return ImpactVc3Get(&pImpactRegs->i2.vc3, idx);
}
unsigned short
ImpactSRVc3Get(ImpactRegsPtr pImpactRegs, CARD8 idx)
{
return ImpactVc3Get(&pImpactRegs->sr.vc3, idx);
}
/*
* ImpactXmap[GS]etModeRegister
*/
static __inline__ void
ImpactXmapSetModeRegister(Impact_xmapregs_t *xmap, CARD8 address, CARD32 mode)
{
xmap->index = address << 2;
xmap->main_mode = mode;
}
void
ImpactI2XmapSetModeRegister(ImpactRegsPtr pImpactRegs, CARD8 address, CARD32 mode)
{
ImpactXmapSetModeRegister(&pImpactRegs->i2.xmap, address, mode);
}
void
ImpactSRXmapSetModeRegister(ImpactRegsPtr pImpactRegs, CARD8 address, CARD32 mode)
{
ImpactXmapSetModeRegister(&pImpactRegs->sr.xmap, address, mode);
}
static __inline__ CARD32
ImpactXmapGetModeRegister(Impact_xmapregs_t *xmap, CARD8 address)
{
xmap->index = address << 2;
return xmap->main_mode;
}
CARD32
ImpactI2XmapGetModeRegister(ImpactRegsPtr pImpactRegs, CARD8 address)
{
return ImpactXmapGetModeRegister(&pImpactRegs->i2.xmap, address);
}
CARD32
ImpactSRXmapGetModeRegister(ImpactRegsPtr pImpactRegs, CARD8 address)
{
return ImpactXmapGetModeRegister(&pImpactRegs->sr.xmap, address);
}
/*
* ImpactBackup.../ImpactRestore...
*/
void
ImpactBackupVc3( ScrnInfoPtr pScrn )
{
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
CARD8 i = sizeof(pImpact->txt_vc3)/sizeof(*pImpact->txt_vc3);
while (i--)
pImpact->txt_vc3[i] = (*pImpact->Vc3Get)( pImpactRegs, i );
}
void
ImpactRestoreVc3( ScrnInfoPtr pScrn )
{
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
CARD8 i = sizeof(pImpact->txt_vc3)/sizeof(*pImpact->txt_vc3);
while (i--)
(*pImpact->Vc3Set)( pImpactRegs, i, pImpact->txt_vc3[i] );
}
void
ImpactVc3DisableCursor( ScrnInfoPtr pScrn )
{
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
unsigned short val = (*pImpact->Vc3Get)( pImpactRegs, VC3_IREG_CURSOR );
(*pImpact->Vc3Set)(pImpactRegs, VC3_IREG_CURSOR, val & ~VC3_CTRL_ECURS);
}
void
ImpactVc3BlankScreen( ScrnInfoPtr pScrn, int blank )
{/*
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
unsigned short treg = (*pImpact->Vc3Get)( pImpactRegs, VC3_IREG_CONTROL );
if (blank)
treg &= ~VC3_CTRL_EDISP;
else
treg |= VC3_CTRL_EDISP;
(*pImpact->Vc3Set)( pImpactRegs, VC3_IREG_CONTROL, treg );
*/}
void
ImpactBackupRex( ScrnInfoPtr pScrn )
{
}
void
ImpactRestoreRex( ScrnInfoPtr pScrn )
{
}
void ImpactBackupXmap( ScrnInfoPtr pScrn )
{
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
Impact_xmapregs_t *xmap =
(&ImpactSRXmapGetModeRegister != pImpact->XmapGetModeRegister)
? &pImpactRegs->i2.xmap
: &pImpactRegs->sr.xmap;
pImpact->txt_xmap.pp1select = xmap->pp1select;
pImpact->txt_xmap.main_mode =
(*pImpact->XmapGetModeRegister)( pImpactRegs, 0 );
}
void ImpactRestoreXmap( ScrnInfoPtr pScrn )
{
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
Impact_xmapregs_t *xmap =
(&ImpactSRXmapGetModeRegister != pImpact->XmapGetModeRegister)
? &pImpactRegs->i2.xmap
: &pImpactRegs->sr.xmap;
xmap->pp1select = pImpact->txt_xmap.pp1select;
(*pImpact->XmapSetModeRegister)(
pImpactRegs, 0, pImpact->txt_xmap.main_mode );
}
/* set XMAP into 24-bpp mode */
void
ImpactXmapSet24bpp( ScrnInfoPtr pScrn )
{
ImpactPtr pImpact = IMPACTPTR(pScrn);
ImpactRegsPtr pImpactRegs = pImpact->pImpactRegs;
Impact_xmapregs_t *xmap =
(&ImpactSRXmapGetModeRegister != pImpact->XmapGetModeRegister)
? &pImpactRegs->i2.xmap
: &pImpactRegs->sr.xmap;
xmap->pp1select = 1;
(*pImpact->XmapSetModeRegister)( pImpactRegs, 0, 0x07a4 );
}
/* eof */
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