diff options
Diffstat (limited to 'include/asm-sparc/io-unit.h')
| -rw-r--r-- | include/asm-sparc/io-unit.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/asm-sparc/io-unit.h b/include/asm-sparc/io-unit.h index 606346937..d76219df4 100644 --- a/include/asm-sparc/io-unit.h +++ b/include/asm-sparc/io-unit.h @@ -1,6 +1,6 @@ /* io-unit.h: Definitions for the sun4d IO-UNIT. * - * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #ifndef _SPARC_IO_UNIT_H #define _SPARC_IO_UNIT_H @@ -22,8 +22,8 @@ #define IOUNIT_DMA_BASE 0xfc000000 /* TOP - 64M */ #define IOUNIT_DMA_SIZE 0x04000000 /* 64M */ -/* We use last 4M for sparc_dvma_malloc */ -#define IOUNIT_DVMA_SIZE 0x00400000 /* 4M */ +/* We use last 1M for sparc_dvma_malloc */ +#define IOUNIT_DVMA_SIZE 0x00100000 /* 1M */ /* The format of an iopte in the external page tables */ #define IOUPTE_PAGE 0xffffff00 /* Physical page number (PA[35:12]) */ @@ -36,8 +36,18 @@ #define IOUPTE_PARITY 0x00000001 struct iounit_struct { - spinlock_t iommu_lock; + unsigned int bmap[(IOUNIT_DMA_SIZE >> (PAGE_SHIFT + 3)) / sizeof(unsigned int)]; + spinlock_t lock; iopte_t *page_table; + unsigned long rotor[3]; + unsigned long limit[4]; }; +#define IOUNIT_BMAP1_START 0x00000000 +#define IOUNIT_BMAP1_END (IOUNIT_DMA_SIZE >> (PAGE_SHIFT + 1)) +#define IOUNIT_BMAP2_START IOUNIT_BMAP1_END +#define IOUNIT_BMAP2_END IOUNIT_BMAP2_START + (IOUNIT_DMA_SIZE >> (PAGE_SHIFT + 2)) +#define IOUNIT_BMAPM_START IOUNIT_BMAP2_END +#define IOUNIT_BMAPM_END ((IOUNIT_DMA_SIZE - IOUNIT_DVMA_SIZE) >> PAGE_SHIFT) + #endif /* !(_SPARC_IO_UNIT_H) */ |