original files of m241

vxworks-6.9/target/h/drv/dma/i8237Dma.h

@@ -0,0 +1,85 @@
+/* i8237Dma.h - Intel 8237 DMA controller header */
+
+/* Copyright 1984-1993 Wind River Systems, Inc. */
+/*
+modification history
+--------------------
+01a,30sep93,hdn  written.
+*/
+
+#ifndef __INCi8237Dmah
+#define __INCi8237Dmah
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* DMA chip-1 IO address */
+
+#define DMA1_BASE		0x00
+
+#define DMA1_ADDR(chan)		(DMA1_BASE + (chan << 1))
+#define DMA1_COUNT(chan)	(DMA1_BASE + (chan << 1) + 1)
+#define DMA1_STATUS		0x08
+#define DMA1_CMD		0x08
+#define DMA1_MASK_SINGLE	0x0a
+#define DMA1_MODE		0x0b
+#define DMA1_CLEAR_FF		0x0c
+#define DMA1_CLEAR_ALL		0x0d
+#define DMA1_CLEAR_MASK		0x0e
+#define DMA1_MASK_ALL		0x0f
+
+/* DMA chip-2 IO address */
+
+#define DMA2_BASE		0xc0
+
+#define DMA2_ADDR(chan)		(DMA2_BASE + ((chan - 4) << 2))
+#define DMA2_COUNT(chan)	(DMA2_BASE + ((chan - 4) << 2) + 2)
+#define DMA2_STATUS		0xd0
+#define DMA2_CMD		0xd0
+#define DMA2_MASK_SINGLE	0xd4
+#define DMA2_MODE		0xd6
+#define DMA2_CLEAR_FF		0xd8
+#define DMA2_CLEAR_ALL		0xda
+#define DMA2_CLEAR_MASK		0xdc
+#define DMA2_MASK_ALL		0xde
+
+/* mode register bit */
+
+#define DMA_MODE_DEMAND		0x00
+#define DMA_MODE_SINGLE		0x40
+#define DMA_MODE_BLOCK		0x80
+#define DMA_MODE_CASCADE	0xc0
+#define DMA_MODE_DECREMENT	0x20
+#define DMA_MODE_INCREMENT	0x00
+#define DMA_MODE_AUTO_ENABLE	0x10
+#define DMA_MODE_AUTO_DISABLE	0x00
+#define DMA_MODE_WRITE		0x08
+#define DMA_MODE_READ		0x04
+
+/* mask register bit */
+
+#define DMA_MASK_SET		0x04
+#define DMA_MASK_RESET		0x00
+
+
+/* function declarations */
+
+#if defined(__STDC__) || defined(__cplusplus)
+
+STATUS dmaSetup (int direction, void *pBuf, UINT nBytes, UINT chan);
+
+#else
+
+STATUS dmaSetup ();
+
+#endif  /* __STDC__ */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INCi8237Dmah */
+