include/asm-sh/cpu-sh4/sq.h

   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
  29 struct 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 */
  40 extern struct sq_mapping *sq_remap(unsigned long phys, unsigned int size, const char *name);
  41 extern void sq_unmap(struct sq_mapping *map);
  42
  43 extern void sq_clear(unsigned long addr, unsigned int len);
  44 extern void sq_flush(void *addr);
  45 extern void sq_flush_range(unsigned long start, unsigned int len);
  46
  47 #endif /* __ASM_CPU_SH4_SQ_H */
  48