1 files changed, 118 insertions, 0 deletions
diff --git a/Source/DirectFB/gfxdrivers/matrox/mmio.h b/Source/DirectFB/gfxdrivers/matrox/mmio.h
new file mode 100755
index 0000000..d897db6
--- /dev/null
+++ b/Source/DirectFB/gfxdrivers/matrox/mmio.h
@@ -0,0 +1,118 @@
+/*
+   (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 __MATROX_MMIO_H__
+#define __MATROX_MMIO_H__
+
+#include <dfb_types.h>
+
+#include "matrox.h"
+
+static inline void
+mga_out8(volatile u8 *mmioaddr, u8 value, u32 reg)
+{
+     *((volatile u8*)(mmioaddr+reg)) = value;
+}
+
+static inline void
+mga_out32(volatile u8 *mmioaddr, u32 value, u32 reg)
+{
+#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 u8
+mga_in8(volatile u8 *mmioaddr, u32 reg)
+{
+     return *((volatile u8*)(mmioaddr+reg));
+}
+
+static inline u32
+mga_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
+}
+
+/* Wait for idle accelerator and DMA */
+static inline void
+mga_waitidle(MatroxDriverData *mdrv, MatroxDeviceData *mdev)
+{
+     while ((mga_in32(mdrv->mmio_base, STATUS) & (DWGENGSTS | ENDPRDMASTS)) != mdev->idle_status) {
+          mdev->idle_waitcycles++;
+     }
+}
+
+/* Wait for fifo space */
+static inline void
+mga_waitfifo(MatroxDriverData *mdrv, MatroxDeviceData *mdev, unsigned int space)
+{
+     mdev->waitfifo_sum += space;
+     mdev->waitfifo_calls++;
+
+     if (mdev->fifo_space < space) {
+          do { /* not needed on a G400,
+                  hardware does retries on writing if FIFO is full,
+                  but results in DMA problems */
+               mdev->fifo_space = mga_in32(mdrv->mmio_base, FIFOSTATUS) & 0xff;
+               mdev->fifo_waitcycles++;
+          } while (mdev->fifo_space < space);
+     }
+     else {
+          mdev->fifo_cache_hits++;
+     }
+
+     mdev->fifo_space -= space;
+}
+
+static inline void
+mga_out_dac( volatile u8 *mmioaddr, u8 reg, u8 val )
+{
+     mga_out8( mmioaddr, reg, DAC_INDEX );
+     mga_out8( mmioaddr, val, DAC_DATA );
+}
+
+static inline u8
+mga_in_dac( volatile u8 *mmioaddr, u8 reg )
+{
+     mga_out8( mmioaddr, reg, DAC_INDEX );
+     return mga_in8( mmioaddr, DAC_DATA );
+}
+
+#endif
+