forked from luck/tmp_suning_uos_patched
0d831770b1
This extends the current SH DMA API somewhat to support a proper virtual channel abstraction, and also works to represent this through the driver model by giving each DMAC its own platform device. There's also a few other minor changes to support a few new CPU subtypes, and make TEI generation for the SH DMAC configurable. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
37 lines
755 B
C
37 lines
755 B
C
#ifndef __ASM_CPU_SH3_DMA_H
|
|
#define __ASM_CPU_SH3_DMA_H
|
|
|
|
#define SH_DMAC_BASE 0xa4000020
|
|
|
|
/* Definitions for the SuperH DMAC */
|
|
#define TM_BURST 0x00000020
|
|
#define TS_8 0x00000000
|
|
#define TS_16 0x00000008
|
|
#define TS_32 0x00000010
|
|
#define TS_128 0x00000018
|
|
|
|
#define CHCR_TS_MASK 0x18
|
|
#define CHCR_TS_SHIFT 3
|
|
|
|
#define DMAOR_INIT DMAOR_DME
|
|
|
|
/*
|
|
* The SuperH DMAC supports a number of transmit sizes, we list them here,
|
|
* with their respective values as they appear in the CHCR registers.
|
|
*/
|
|
enum {
|
|
XMIT_SZ_8BIT,
|
|
XMIT_SZ_16BIT,
|
|
XMIT_SZ_32BIT,
|
|
XMIT_SZ_128BIT,
|
|
};
|
|
|
|
static unsigned int ts_shift[] __attribute__ ((used)) = {
|
|
[XMIT_SZ_8BIT] = 0,
|
|
[XMIT_SZ_16BIT] = 1,
|
|
[XMIT_SZ_32BIT] = 2,
|
|
[XMIT_SZ_128BIT] = 4,
|
|
};
|
|
|
|
#endif /* __ASM_CPU_SH3_DMA_H */
|