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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 ___MACH64_MMIO_H__
#define ___MACH64_MMIO_H__
#include <dfb_types.h>
#include "mach64.h"
static inline void
mach64_out8( volatile u8 *mmioaddr, u32 reg, u8 value )
{
*((volatile u8*)(mmioaddr+reg)) = value;
}
static inline u8
mach64_in8( volatile u8 *mmioaddr, u32 reg )
{
return *((volatile u8*)(mmioaddr+reg));
}
static inline void
mach64_out32( volatile u8 *mmioaddr, u32 reg, u32 value )
{
#ifdef __powerpc__
if (reg >= 0x400)
asm volatile("stwbrx %0,%1,%2;eieio" : : "r"(value), "b"(reg-0x800),
"r"(mmioaddr) : "memory");
else
asm volatile("stwbrx %0,%1,%2;eieio" : : "r"(value), "b"(reg),
"r"(mmioaddr) : "memory");
#else
if (reg >= 0x400)
*((volatile u32*)(mmioaddr+reg-0x800)) = value;
else
*((volatile u32*)(mmioaddr+reg)) = value;
#endif
}
static inline u32
mach64_in32( volatile u8 *mmioaddr, u32 reg )
{
#ifdef __powerpc__
u32 value;
if (reg >= 0x400)
asm volatile("lwbrx %0,%1,%2;eieio" : "=r"(value) : "b"(reg-0x800), "r"(mmioaddr));
else
asm volatile("lwbrx %0,%1,%2;eieio" : "=r"(value) : "b"(reg), "r"(mmioaddr));
return value;
#else
if (reg >= 0x400)
return *((volatile u32*)(mmioaddr+reg-0x800));
else
return *((volatile u32*)(mmioaddr+reg));
#endif
}
static const u32 lt_lcd_regs[] = {
CONFIG_PANEL_LT,
LCD_GEN_CTRL_LT,
DSTN_CONTROL_LT,
HFB_PITCH_ADDR_LT,
HORZ_STRETCHING_LT,
VERT_STRETCHING_LT,
0, /* EXT_VERT_STRETCH */
LT_GIO_LT,
POWER_MANAGEMENT_LT
};
#if 0
static inline void
mach64_in_lcd( Mach64DeviceData *mdev,
volatile u8 *mmioaddr, u8 reg, u32 value )
{
if (mdev->chip == CHIP_3D_RAGE_LT) {
mach64_out32( mmioaddr, lt_lcd_regs[reg], value );
} else if (mdev->chip >= CHIP_3D_RAGE_LT_PRO) {
mach64_out8( mmioaddr, LCD_INDEX, reg );
mach64_out32( mmioaddr, LCD_DATA, value );
}
}
#endif
static inline u32
mach64_in_lcd( Mach64DeviceData *mdev,
volatile u8 *mmioaddr, u8 reg )
{
if (mdev->chip == CHIP_3D_RAGE_LT) {
return mach64_in32( mmioaddr, lt_lcd_regs[reg] );
} else if (mdev->chip >= CHIP_3D_RAGE_LT_PRO) {
mach64_out8( mmioaddr, LCD_INDEX, reg );
return mach64_in32( mmioaddr, LCD_DATA );
} else {
return 0;
}
}
#if 0
static inline void
mach64_out_pll( volatile u8 *mmioaddr, u8 reg, u8 value )
{
mach64_out8( mmioaddr, CLOCK_CNTL1, (reg << 2) | PLL_WR_EN );
mach64_out8( mmioaddr, CLOCK_CNTL2, value );
}
#endif
static inline u8
mach64_in_pll( volatile u8 *mmioaddr, u8 reg )
{
mach64_out8( mmioaddr, CLOCK_CNTL1, reg << 2 );
return mach64_in8( mmioaddr, CLOCK_CNTL2 );
}
static inline void mach64_waitidle( Mach64DriverData *mdrv,
Mach64DeviceData *mdev )
{
int timeout = 1000000;
while (timeout--) {
if ((mach64_in32( mdrv->mmio_base, FIFO_STAT ) & 0x0000FFFF) == 0)
break;
mdev->idle_waitcycles++;
}
timeout = 1000000;
while (timeout--) {
if ((mach64_in32( mdrv->mmio_base, GUI_STAT ) & GUI_ACTIVE) == 0)
break;
mdev->idle_waitcycles++;
}
mdev->fifo_space = 16;
}
static inline void mach64_waitfifo( Mach64DriverData *mdrv,
Mach64DeviceData *mdev,
unsigned int requested_fifo_space )
{
u32 fifo_stat;
int timeout = 1000000;
mdev->waitfifo_sum += requested_fifo_space;
mdev->waitfifo_calls++;
if (mdev->fifo_space < requested_fifo_space) {
while (timeout--) {
mdev->fifo_waitcycles++;
fifo_stat = mach64_in32( mdrv->mmio_base, FIFO_STAT ) & 0x0000FFFF;
mdev->fifo_space = 16;
while (fifo_stat) {
mdev->fifo_space--;
fifo_stat >>= 1;
}
if (mdev->fifo_space >= requested_fifo_space)
break;
}
}
else {
mdev->fifo_cache_hits++;
}
mdev->fifo_space -= requested_fifo_space;
}
#endif
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