| #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 |
