diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/arch-v10/svinto.h |
Linux-2.6.12-rc2v2.6.12-rc2
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!
Diffstat (limited to 'include/asm-cris/arch-v10/svinto.h')
-rw-r--r-- | include/asm-cris/arch-v10/svinto.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/asm-cris/arch-v10/svinto.h b/include/asm-cris/arch-v10/svinto.h new file mode 100644 index 000000000000..0881a1af7cee --- /dev/null +++ b/include/asm-cris/arch-v10/svinto.h @@ -0,0 +1,64 @@ +#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 |