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/*
(c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Hundt <andi@fischlustig.de>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef ___ATI128_MMIO_H__
#define ___ATI128_MMIO_H__
#include <dfb_types.h>
#include "ati128.h"
static inline void
ati128_out32(volatile u8 *mmioaddr, u32 reg, u32 value)
{
#ifdef __powerpc__
asm volatile("stwbrx %0,%1,%2;eieio" : : "r"(value), "b"(reg),
"r"(mmioaddr) : "memory");
#else
*((volatile u32*)(mmioaddr+reg)) = value;
#endif
}
static inline u32
ati128_in32(volatile u8 *mmioaddr, u32 reg)
{
#ifdef __powerpc__
u32 value;
asm volatile("lwbrx %0,%1,%2;eieio" : "=r"(value) : "b"(reg), "r"(mmioaddr));
return value;
#else
return *((volatile u32*)(mmioaddr+reg));
#endif
}
static inline void ati128_waitidle( ATI128DriverData *adrv,
ATI128DeviceData *adev )
{
int timeout = 1000000;
while (timeout--) {
if ((ati128_in32( adrv->mmio_base, GUI_STAT) & 0x00000FFF) == 64)
break;
adev->idle_waitcycles++;
}
timeout = 1000000;
while (timeout--) {
if ((ati128_in32( adrv->mmio_base, GUI_STAT) & (GUI_ACTIVE | ENG_3D_BUSY)) == ENGINE_IDLE)
break;
adev->idle_waitcycles++;
}
ati128_out32( adrv->mmio_base, PC_NGUI_CTLSTAT,
ati128_in32( adrv->mmio_base, PC_NGUI_CTLSTAT) | 0x000000ff);
timeout = 1000000;
while (timeout--) {
if ((ati128_in32( adrv->mmio_base, PC_NGUI_CTLSTAT) & PC_BUSY) != PC_BUSY)
break;
adev->idle_waitcycles++;
}
adev->fifo_space = 60;
}
static inline void ati128_waitfifo( ATI128DriverData *adrv,
ATI128DeviceData *adev,
unsigned int requested_fifo_space)
{
int timeout = 1000000;
adev->waitfifo_sum += requested_fifo_space;
adev->waitfifo_calls++;
if (adev->fifo_space < requested_fifo_space) {
while (timeout--) {
adev->fifo_waitcycles++;
adev->fifo_space = ati128_in32( adrv->mmio_base, GUI_STAT) & 0x00000FFF;
if (adev->fifo_space >= requested_fifo_space)
break;
}
}
else {
adev->fifo_cache_hits++;
}
adev->fifo_space -= requested_fifo_space;
}
#endif
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