65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
#ifndef _ASM_CRIS_SVINTO_H
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#define _ASM_CRIS_SVINTO_H
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#include "sv_addr_ag.h"
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extern unsigned int genconfig_shadow; /* defined and set in head.S */
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/* dma stuff */
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enum { /* Available in: */
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d_eol = (1 << 0), /* flags */
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d_eop = (1 << 1), /* flags & status */
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d_wait = (1 << 2), /* flags */
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d_int = (1 << 3), /* flags */
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d_txerr = (1 << 4), /* flags */
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d_stop = (1 << 4), /* status */
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d_ecp = (1 << 4), /* flags & status */
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d_pri = (1 << 5), /* flags & status */
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d_alignerr = (1 << 6), /* status */
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d_crcerr = (1 << 7) /* status */
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};
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/* Do remember that DMA does not go through the MMU and needs
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* a real physical address, not an address virtually mapped or
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* paged. Therefore the buf/next ptrs below are unsigned long instead
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* of void * to give a warning if you try to put a pointer directly
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* to them instead of going through virt_to_phys/phys_to_virt.
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*/
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typedef struct etrax_dma_descr {
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unsigned short sw_len; /* 0-1 */
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unsigned short ctrl; /* 2-3 */
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unsigned long next; /* 4-7 */
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unsigned long buf; /* 8-11 */
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unsigned short hw_len; /* 12-13 */
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unsigned char status; /* 14 */
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unsigned char fifo_len; /* 15 */
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} etrax_dma_descr;
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/* Use this for constant numbers only */
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#define RESET_DMA_NUM( n ) \
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*R_DMA_CH##n##_CMD = IO_STATE( R_DMA_CH0_CMD, cmd, reset )
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/* Use this for constant numbers or symbols,
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* having two macros makes it possible to use constant expressions.
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*/
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#define RESET_DMA( n ) RESET_DMA_NUM( n )
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/* Use this for constant numbers only */
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#define WAIT_DMA_NUM( n ) \
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while( (*R_DMA_CH##n##_CMD & IO_MASK( R_DMA_CH0_CMD, cmd )) != \
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IO_STATE( R_DMA_CH0_CMD, cmd, hold ) )
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/* Use this for constant numbers or symbols
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* having two macros makes it possible to use constant expressions.
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*/
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#define WAIT_DMA( n ) WAIT_DMA_NUM( n )
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extern void prepare_rx_descriptor(struct etrax_dma_descr *desc);
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extern void flush_etrax_cache(void);
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#endif
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