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Diffstat (limited to 'include/asm-sh/cpu-sh4/sq.h')
| -rw-r--r-- | include/asm-sh/cpu-sh4/sq.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/asm-sh/cpu-sh4/sq.h b/include/asm-sh/cpu-sh4/sq.h new file mode 100644 index 00000000000..366b09166d3 --- /dev/null +++ b/include/asm-sh/cpu-sh4/sq.h @@ -0,0 +1,48 @@ +/* + * include/asm-sh/cpu-sh4/sq.h + * + * Copyright (C) 2001, 2002, 2003 Paul Mundt + * Copyright (C) 2001, 2002 M. R. Brown + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#ifndef __ASM_CPU_SH4_SQ_H +#define __ASM_CPU_SH4_SQ_H + +#include <asm/addrspace.h> + +/* + * Store queues range from e0000000-e3fffffc, allowing approx. 64MB to be + * mapped to any physical address space. Since data is written (and aligned) + * to 32-byte boundaries, we need to be sure that all allocations are aligned. + */ +#define SQ_SIZE 32 +#define SQ_ALIGN_MASK (~(SQ_SIZE - 1)) +#define SQ_ALIGN(addr) (((addr)+SQ_SIZE-1) & SQ_ALIGN_MASK) + +#define SQ_QACR0 (P4SEG_REG_BASE + 0x38) +#define SQ_QACR1 (P4SEG_REG_BASE + 0x3c) +#define SQ_ADDRMAX (P4SEG_STORE_QUE + 0x04000000) + +struct sq_mapping { + const char *name; + + unsigned long sq_addr; + unsigned long addr; + unsigned int size; + + struct list_head list; +}; + +/* arch/sh/kernel/cpu/sh4/sq.c */ +extern struct sq_mapping *sq_remap(unsigned long phys, unsigned int size, const char *name); +extern void sq_unmap(struct sq_mapping *map); + +extern void sq_clear(unsigned long addr, unsigned int len); +extern void sq_flush(void *addr); +extern void sq_flush_range(unsigned long start, unsigned int len); + +#endif /* __ASM_CPU_SH4_SQ_H */ + |