---

yaml --- r: 137170 b: refs/heads/master c: bc6447b h: refs/heads/master v: v3
git-mirror · Jan 2, 2009 · ef423a3 · ef423a3
1 parent 0e68477
commit ef423a3
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Showing 3 changed files with 10 additions and 18 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5369bea7d7db1d95f63907f3470e23d32930be98
+refs/heads/master: bc6447b8e4fdb3306ee6381df9650a1a8aa57c5b
diff --git a/trunk/arch/arm/include/asm/dma.h b/trunk/arch/arm/include/asm/dma.h
@@ -26,12 +26,15 @@
  */
 typedef unsigned int dmamode_t;
 
-#define DMA_MODE_MASK	3
+/*
+ * The DMA modes reflect the settings for the ISA DMA controller
+ */
+#define DMA_MODE_MASK	 0xcc
 
-#define DMA_MODE_READ	 0
-#define DMA_MODE_WRITE	 1
-#define DMA_MODE_CASCADE 2
-#define DMA_AUTOINIT	 4
+#define DMA_MODE_READ	 0x44
+#define DMA_MODE_WRITE	 0x48
+#define DMA_MODE_CASCADE 0xc0
+#define DMA_AUTOINIT	 0x10
 
 extern spinlock_t  dma_spin_lock;
 

diff --git a/trunk/arch/arm/kernel/dma-isa.c b/trunk/arch/arm/kernel/dma-isa.c
@@ -24,11 +24,6 @@
 #include <asm/dma.h>
 #include <asm/mach/dma.h>
 
-#define ISA_DMA_MODE_READ	0x44
-#define ISA_DMA_MODE_WRITE	0x48
-#define ISA_DMA_MODE_CASCADE	0xc0
-#define ISA_DMA_AUTOINIT	0x10
-
 #define ISA_DMA_MASK		0
 #define ISA_DMA_MODE		1
 #define ISA_DMA_CLRFF		2
@@ -67,20 +62,17 @@ static void isa_enable_dma(unsigned int chan, dma_t *dma)
 		unsigned int mode;
 		enum dma_data_direction direction;
 
-		mode = chan & 3;
+		mode = (chan & 3) | dma->dma_mode;
 		switch (dma->dma_mode & DMA_MODE_MASK) {
 		case DMA_MODE_READ:
-			mode |= ISA_DMA_MODE_READ;
 			direction = DMA_FROM_DEVICE;
 			break;
 
 		case DMA_MODE_WRITE:
-			mode |= ISA_DMA_MODE_WRITE;
 			direction = DMA_TO_DEVICE;
 			break;
 
 		case DMA_MODE_CASCADE:
-			mode |= ISA_DMA_MODE_CASCADE;
 			direction = DMA_BIDIRECTIONAL;
 			break;
 
@@ -121,9 +113,6 @@ static void isa_enable_dma(unsigned int chan, dma_t *dma)
 		outb(length, isa_dma_port[chan][ISA_DMA_COUNT]);
 		outb(length >> 8, isa_dma_port[chan][ISA_DMA_COUNT]);
 
-		if (dma->dma_mode & DMA_AUTOINIT)
-			mode |= ISA_DMA_AUTOINIT;
-
 		outb(mode, isa_dma_port[chan][ISA_DMA_MODE]);
 		dma->invalid = 0;
 	}