62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/*
|
|
* Copyright (c) 2008 Zhang Le <r0bertz@gentoo.org>
|
|
* Copyright (c) 2009 Wu Zhangjin <wuzj@lemote.com>
|
|
*
|
|
* This program is free software; you can redistribute it
|
|
* and/or modify it under the terms of the GNU General
|
|
* Public License as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be
|
|
* useful, but WITHOUT ANY WARRANTY; without even the implied
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
|
|
* 02139, USA.
|
|
*/
|
|
|
|
#ifndef __ASM_MACH_LOONGSON_PCI_H_
|
|
#define __ASM_MACH_LOONGSON_PCI_H_
|
|
|
|
extern struct pci_ops loongson_pci_ops;
|
|
|
|
/* this is an offset from mips_io_port_base */
|
|
#define LOONGSON_PCI_IO_START 0x00004000UL
|
|
|
|
#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
|
|
|
|
/*
|
|
* we use address window2 to map cpu address space to pci space
|
|
* window2: cpu [1G, 2G] -> pci [1G, 2G]
|
|
* why not use window 0 & 1? because they are used by cpu when booting.
|
|
* window0: cpu [0, 256M] -> ddr [0, 256M]
|
|
* window1: cpu [256M, 512M] -> pci [256M, 512M]
|
|
*/
|
|
|
|
/* the smallest LOONGSON_CPU_MEM_SRC can be 512M */
|
|
#define LOONGSON_CPU_MEM_SRC 0x40000000ul /* 1G */
|
|
#define LOONGSON_PCI_MEM_DST LOONGSON_CPU_MEM_SRC
|
|
|
|
#define LOONGSON_PCI_MEM_START LOONGSON_PCI_MEM_DST
|
|
#define LOONGSON_PCI_MEM_END (0x80000000ul-1) /* 2G */
|
|
|
|
#define MMAP_CPUTOPCI_SIZE (LOONGSON_PCI_MEM_END - \
|
|
LOONGSON_PCI_MEM_START + 1)
|
|
|
|
#else /* loongson2f/32bit & loongson2e */
|
|
|
|
/* this pci memory space is mapped by pcimap in pci.c */
|
|
#define LOONGSON_PCI_MEM_START LOONGSON_PCILO1_BASE
|
|
#define LOONGSON_PCI_MEM_END (LOONGSON_PCILO1_BASE + 0x04000000 * 2)
|
|
/* this is an offset from mips_io_port_base */
|
|
#define LOONGSON_PCI_IO_START 0x00004000UL
|
|
|
|
#endif /* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */
|
|
|
|
#endif /* !__ASM_MACH_LOONGSON_PCI_H_ */
|