LXR linux/arch/powerpc/include/asm/dcr-generic.h

   1/*
   2 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
   3 *                    <benh@kernel.crashing.org>
   4 *
   5 *   This program is free software;  you can redistribute it and/or modify
   6 *   it under the terms of the GNU General Public License as published by
   7 *   the Free Software Foundation; either version 2 of the License, or
   8 *   (at your option) any later version.
   9 *
  10 *   This program is distributed in the hope that it will be useful,
  11 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  13 *   the GNU General Public License for more details.
  14 *
  15 *   You should have received a copy of the GNU General Public License
  16 *   along with this program;  if not, write to the Free Software
  17 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18 */
  19
  20#ifndef _ASM_POWERPC_DCR_GENERIC_H
  21#define _ASM_POWERPC_DCR_GENERIC_H
  22#ifdef __KERNEL__
  23#ifndef __ASSEMBLY__
  24
  25enum host_type_t {DCR_HOST_MMIO, DCR_HOST_NATIVE, DCR_HOST_INVALID};
  26
  27typedef struct {
  28        enum host_type_t type;
  29        union {
  30                dcr_host_mmio_t mmio;
  31                dcr_host_native_t native;
  32        } host;
  33} dcr_host_t;
  34
  35extern bool dcr_map_ok_generic(dcr_host_t host);
  36
  37extern dcr_host_t dcr_map_generic(struct device_node *dev, unsigned int dcr_n,
  38                          unsigned int dcr_c);
  39extern void dcr_unmap_generic(dcr_host_t host, unsigned int dcr_c);
  40
  41extern u32 dcr_read_generic(dcr_host_t host, unsigned int dcr_n);
  42
  43extern void dcr_write_generic(dcr_host_t host, unsigned int dcr_n, u32 value);
  44
  45#endif /* __ASSEMBLY__ */
  46#endif /* __KERNEL__ */
  47#endif /* _ASM_POWERPC_DCR_GENERIC_H */
  48
  49
  50