fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-x86_64 / dma.h

diff --git a/include/asm-x86_64/dma.h b/include/asm-x86_64/dma.h
index 16fa3a0..a37c16f 100644 (file)
--- a/include/asm-x86_64/dma.h
+++ b/include/asm-x86_64/dma.h
@@ -1,4 +1,4 @@
-/* $Id: dma.h,v 1.1.1.1 2001/04/19 20:00:38 ak Exp $
+/*
  * linux/include/asm/dma.h: Defines for using and allocating dma channels.
  * Written by Hennus Bergman, 1992.
  * High DMA channel support & info by Hannu Savolainen
@@ -8,7 +8,6 @@
 #ifndef _ASM_DMA_H
 #define _ASM_DMA_H
 
-#include <linux/config.h>
 #include <linux/spinlock.h>    /* And spinlocks */
 #include <asm/io.h>            /* need byte IO */
 #include <linux/delay.h>
@@ -72,8 +71,15 @@
 
 #define MAX_DMA_CHANNELS       8
 
-/* The maximum address that we can perform a DMA transfer to on this platform */
-#define MAX_DMA_ADDRESS      (PAGE_OFFSET+0x1000000)
+
+/* 16MB ISA DMA zone */
+#define MAX_DMA_PFN   ((16*1024*1024) >> PAGE_SHIFT)
+
+/* 4GB broken PCI/AGP hardware bus master zone */
+#define MAX_DMA32_PFN ((4UL*1024*1024*1024) >> PAGE_SHIFT)
+
+/* Compat define for old dma zone */
+#define MAX_DMA_ADDRESS ((unsigned long)__va(MAX_DMA_PFN << PAGE_SHIFT))
 
 /* 8237 DMA controllers */
 #define IO_DMA1_BASE   0x00    /* 8 bit slave DMA, channels 0..3 */