mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
#ifndef _ASM_CRIS_SVINTO_H
|
|
#define _ASM_CRIS_SVINTO_H
|
|
|
|
#include "sv_addr_ag.h"
|
|
|
|
extern unsigned int genconfig_shadow; /* defined and set in head.S */
|
|
|
|
/* dma stuff */
|
|
|
|
enum { /* Available in: */
|
|
d_eol = (1 << 0), /* flags */
|
|
d_eop = (1 << 1), /* flags & status */
|
|
d_wait = (1 << 2), /* flags */
|
|
d_int = (1 << 3), /* flags */
|
|
d_txerr = (1 << 4), /* flags */
|
|
d_stop = (1 << 4), /* status */
|
|
d_ecp = (1 << 4), /* flags & status */
|
|
d_pri = (1 << 5), /* flags & status */
|
|
d_alignerr = (1 << 6), /* status */
|
|
d_crcerr = (1 << 7) /* status */
|
|
};
|
|
|
|
/* Do remember that DMA does not go through the MMU and needs
|
|
* a real physical address, not an address virtually mapped or
|
|
* paged. Therefore the buf/next ptrs below are unsigned long instead
|
|
* of void * to give a warning if you try to put a pointer directly
|
|
* to them instead of going through virt_to_phys/phys_to_virt.
|
|
*/
|
|
|
|
typedef struct etrax_dma_descr {
|
|
unsigned short sw_len; /* 0-1 */
|
|
unsigned short ctrl; /* 2-3 */
|
|
unsigned long next; /* 4-7 */
|
|
unsigned long buf; /* 8-11 */
|
|
unsigned short hw_len; /* 12-13 */
|
|
unsigned char status; /* 14 */
|
|
unsigned char fifo_len; /* 15 */
|
|
} etrax_dma_descr;
|
|
|
|
|
|
/* Use this for constant numbers only */
|
|
#define RESET_DMA_NUM( n ) \
|
|
*R_DMA_CH##n##_CMD = IO_STATE( R_DMA_CH0_CMD, cmd, reset )
|
|
|
|
/* Use this for constant numbers or symbols,
|
|
* having two macros makes it possible to use constant expressions.
|
|
*/
|
|
#define RESET_DMA( n ) RESET_DMA_NUM( n )
|
|
|
|
|
|
/* Use this for constant numbers only */
|
|
#define WAIT_DMA_NUM( n ) \
|
|
while( (*R_DMA_CH##n##_CMD & IO_MASK( R_DMA_CH0_CMD, cmd )) != \
|
|
IO_STATE( R_DMA_CH0_CMD, cmd, hold ) )
|
|
|
|
/* Use this for constant numbers or symbols
|
|
* having two macros makes it possible to use constant expressions.
|
|
*/
|
|
#define WAIT_DMA( n ) WAIT_DMA_NUM( n )
|
|
|
|
extern void prepare_rx_descriptor(struct etrax_dma_descr *desc);
|
|
extern void flush_etrax_cache(void);
|
|
|
|
#endif
|