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[ARM] dma: move RiscPC specific DMA data out of dma_struct

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Separate the RiscPC specific (IOMD and floppy FIQ) data out of the core
DMA structure by making the IOMD and floppy DMA supersets.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2008-12-08 17:35:48 +00:00
committed by Russell King
parent 2f757f2ab7
commit ad9dd94c38
2 changed files with 91 additions and 73 deletions
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18
arch/arm/include/asm/mach/dma.h
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@@ -40,14 +40,22 @@ struct dma_struct {
unsigned int lock; /* Device is allocated */
const char *device_id; /* Device name */
unsigned int dma_base; /* Controller base address */
int dma_irq; /* Controller IRQ */
struct scatterlist cur_sg; /* Current controller buffer */
unsigned int state;
struct dma_ops *d_ops;
};
struct floppy_dma {
struct dma_struct dma;
unsigned int fiq;
};
struct iomd_dma {
struct dma_struct dma;
unsigned int state;
unsigned long base; /* Controller base address */
int irq; /* Controller IRQ */
struct scatterlist cur_sg; /* Current controller buffer */
};
/*
* isa_dma_add - add an ISA-style DMA channel
*/