#include <asm/system.h>
#include <asm/scatterlist.h>
-typedef unsigned int dmach_t;
-
#include <mach/isa-dma.h>
/*
- * DMA modes
+ * The DMA modes reflect the settings for the ISA DMA controller
*/
-typedef unsigned int dmamode_t;
-
-#define DMA_MODE_MASK 3
+#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;
/* Clear the 'DMA Pointer Flip Flop'.
* Write 0 for LSB/MSB, 1 for MSB/LSB access.
*/
-#define clear_dma_ff(channel)
+#define clear_dma_ff(chan)
/* Set only the page register bits of the transfer address.
*
* NOTE: This is an architecture specific function, and should
* be hidden from the drivers
*/
-extern void set_dma_page(dmach_t channel, char pagenr);
+extern void set_dma_page(unsigned int chan, char pagenr);
/* Request a DMA channel
*
* Some architectures may need to do allocate an interrupt
*/
-extern int request_dma(dmach_t channel, const char * device_id);
+extern int request_dma(unsigned int chan, const char * device_id);
/* Free a DMA channel
*
* Some architectures may need to do free an interrupt
*/
-extern void free_dma(dmach_t channel);
+extern void free_dma(unsigned int chan);
/* Enable DMA for this channel
*
* On some architectures, this may have other side effects like
* enabling an interrupt and setting the DMA registers.
*/
-extern void enable_dma(dmach_t channel);
+extern void enable_dma(unsigned int chan);
/* Disable DMA for this channel
*
* On some architectures, this may have other side effects like
* disabling an interrupt or whatever.
*/
-extern void disable_dma(dmach_t channel);
+extern void disable_dma(unsigned int chan);
/* Test whether the specified channel has an active DMA transfer
*/
-extern int dma_channel_active(dmach_t channel);
+extern int dma_channel_active(unsigned int chan);
/* Set the DMA scatter gather list for this channel
*
* especially since some DMA architectures don't update the
* DMA address immediately, but defer it to the enable_dma().
*/
-extern void set_dma_sg(dmach_t channel, struct scatterlist *sg, int nr_sg);
+extern void set_dma_sg(unsigned int chan, struct scatterlist *sg, int nr_sg);
/* Set the DMA address for this channel
*
* especially since some DMA architectures don't update the
* DMA address immediately, but defer it to the enable_dma().
*/
-extern void __set_dma_addr(dmach_t channel, void *addr);
-#define set_dma_addr(channel, addr) \
- __set_dma_addr(channel, bus_to_virt(addr))
+extern void __set_dma_addr(unsigned int chan, void *addr);
+#define set_dma_addr(chan, addr) \
+ __set_dma_addr(chan, bus_to_virt(addr))
/* Set the DMA byte count for this channel
*
* especially since some DMA architectures don't update the
* DMA count immediately, but defer it to the enable_dma().
*/
-extern void set_dma_count(dmach_t channel, unsigned long count);
+extern void set_dma_count(unsigned int chan, unsigned long count);
/* Set the transfer direction for this channel
*
* DMA transfer direction immediately, but defer it to the
* enable_dma().
*/
-extern void set_dma_mode(dmach_t channel, dmamode_t mode);
+extern void set_dma_mode(unsigned int chan, unsigned int mode);
/* Set the transfer speed for this channel
*/
-extern void set_dma_speed(dmach_t channel, int cycle_ns);
+extern void set_dma_speed(unsigned int chan, int cycle_ns);
/* Get DMA residue count. After a DMA transfer, this
* should return zero. Reading this while a DMA transfer is
* If called before the channel has been used, it may return 1.
* Otherwise, it returns the number of _bytes_ left to transfer.
*/
-extern int get_dma_residue(dmach_t channel);
+extern int get_dma_residue(unsigned int chan);
#ifndef NO_DMA
#define NO_DMA 255