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1/*
2 * include/asm-sh/cpu-sh4/sq.h
3 *
4 * Copyright (C) 2001, 2002, 2003 Paul Mundt
5 * Copyright (C) 2001, 2002 M. R. Brown
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details.
10 */
11#ifndef __ASM_CPU_SH4_SQ_H
12#define __ASM_CPU_SH4_SQ_H
13
14#include <asm/addrspace.h>
15
16/*
17 * Store queues range from e0000000-e3fffffc, allowing approx. 64MB to be
18 * mapped to any physical address space. Since data is written (and aligned)
19 * to 32-byte boundaries, we need to be sure that all allocations are aligned.
20 */
21#define SQ_SIZE 32
22#define SQ_ALIGN_MASK (~(SQ_SIZE - 1))
23#define SQ_ALIGN(addr) (((addr)+SQ_SIZE-1) & SQ_ALIGN_MASK)
24
25#define SQ_QACR0 (P4SEG_REG_BASE + 0x38)
26#define SQ_QACR1 (P4SEG_REG_BASE + 0x3c)
27#define SQ_ADDRMAX (P4SEG_STORE_QUE + 0x04000000)
28
29struct sq_mapping {
30 const char *name;
31
32 unsigned long sq_addr;
33 unsigned long addr;
34 unsigned int size;
35
36 struct list_head list;
37};
38
39/* arch/sh/kernel/cpu/sh4/sq.c */
40extern struct sq_mapping *sq_remap(unsigned long phys, unsigned int size, const char *name);
41extern void sq_unmap(struct sq_mapping *map);
42
43extern void sq_clear(unsigned long addr, unsigned int len);
44extern void sq_flush(void *addr);
45extern void sq_flush_range(unsigned long start, unsigned int len);
46
47#endif /* __ASM_CPU_SH4_SQ_H */
48