Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[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..6f2a817 100644 (file)
--- a/include/asm-x86_64/dma.h
+++ b/include/asm-x86_64/dma.h
@@ -72,8 +72,15 @@
 
 #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 */