diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-11-03 20:46:44 +0000 |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-11-03 20:46:44 +0000 |
commit | 973a971d5a5ef0d6a60e5c9b0df675fef6be3383 (patch) | |
tree | d49729a4bff6fd5bdacfcc57e7ba44911fd8812c /arch/cris/include/arch-v10/arch/dma.h | |
parent | f4bafd5dc0d4f03f6dc4466d233a4601c54d40b3 (diff) | |
parent | a75952b72a0fff3031124003e62118111aed42c1 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into rmk-next
Diffstat (limited to 'arch/cris/include/arch-v10/arch/dma.h')
-rw-r--r-- | arch/cris/include/arch-v10/arch/dma.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/cris/include/arch-v10/arch/dma.h b/arch/cris/include/arch-v10/arch/dma.h new file mode 100644 index 00000000000..ecb9dba6fa4 --- /dev/null +++ b/arch/cris/include/arch-v10/arch/dma.h @@ -0,0 +1,74 @@ +/* Defines for using and allocating dma channels. */ + +#ifndef _ASM_ARCH_DMA_H +#define _ASM_ARCH_DMA_H + +#define MAX_DMA_CHANNELS 10 + +/* dma0 and dma1 used for network (ethernet) */ +#define NETWORK_TX_DMA_NBR 0 +#define NETWORK_RX_DMA_NBR 1 + +/* dma2 and dma3 shared by par0, scsi0, ser2 and ata */ +#define PAR0_TX_DMA_NBR 2 +#define PAR0_RX_DMA_NBR 3 +#define SCSI0_TX_DMA_NBR 2 +#define SCSI0_RX_DMA_NBR 3 +#define SER2_TX_DMA_NBR 2 +#define SER2_RX_DMA_NBR 3 +#define ATA_TX_DMA_NBR 2 +#define ATA_RX_DMA_NBR 3 + +/* dma4 and dma5 shared by par1, scsi1, ser3 and extdma0 */ +#define PAR1_TX_DMA_NBR 4 +#define PAR1_RX_DMA_NBR 5 +#define SCSI1_TX_DMA_NBR 4 +#define SCSI1_RX_DMA_NBR 5 +#define SER3_TX_DMA_NBR 4 +#define SER3_RX_DMA_NBR 5 +#define EXTDMA0_TX_DMA_NBR 4 +#define EXTDMA0_RX_DMA_NBR 5 + +/* dma6 and dma7 shared by ser0, extdma1 and mem2mem */ +#define SER0_TX_DMA_NBR 6 +#define SER0_RX_DMA_NBR 7 +#define EXTDMA1_TX_DMA_NBR 6 +#define EXTDMA1_RX_DMA_NBR 7 +#define MEM2MEM_TX_DMA_NBR 6 +#define MEM2MEM_RX_DMA_NBR 7 + +/* dma8 and dma9 shared by ser1 and usb */ +#define SER1_TX_DMA_NBR 8 +#define SER1_RX_DMA_NBR 9 +#define USB_TX_DMA_NBR 8 +#define USB_RX_DMA_NBR 9 + +#endif + +enum dma_owner +{ + dma_eth, + dma_ser0, + dma_ser1, /* Async and sync */ + dma_ser2, + dma_ser3, /* Async and sync */ + dma_ata, + dma_par0, + dma_par1, + dma_ext0, + dma_ext1, + dma_int6, + dma_int7, + dma_usb, + dma_scsi0, + dma_scsi1 +}; + +/* Masks used by cris_request_dma options: */ +#define DMA_VERBOSE_ON_ERROR (1<<0) +#define DMA_PANIC_ON_ERROR ((1<<1)|DMA_VERBOSE_ON_ERROR) + +int cris_request_dma(unsigned int dmanr, const char * device_id, + unsigned options, enum dma_owner owner); + +void cris_free_dma(unsigned int dmanr, const char * device_id); |