diff options
Diffstat (limited to 'arch/mips/include/asm/mach-loongson/pci.h')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson/pci.h | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/arch/mips/include/asm/mach-loongson/pci.h b/arch/mips/include/asm/mach-loongson/pci.h index f1663ca81da..1212774f66e 100644 --- a/arch/mips/include/asm/mach-loongson/pci.h +++ b/arch/mips/include/asm/mach-loongson/pci.h @@ -1,37 +1,55 @@ /* * Copyright (c) 2008 Zhang Le <r0bertz@gentoo.org> + * Copyright (c) 2009 Wu Zhangjin <wuzhangjin@gmail.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 bonito64_pci_ops; +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 */ -#ifdef CONFIG_LEMOTE_FULOONG2E +#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 BONITO_PCILO1_BASE -#define LOONGSON_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2) +#ifdef CONFIG_CPU_LOONGSON3 +#define LOONGSON_PCI_MEM_START 0x40000000UL +#define LOONGSON_PCI_MEM_END 0x7effffffUL +#else +#define LOONGSON_PCI_MEM_START LOONGSON_PCILO1_BASE +#define LOONGSON_PCI_MEM_END (LOONGSON_PCILO1_BASE + 0x04000000 * 2) +#endif /* this is an offset from mips_io_port_base */ #define LOONGSON_PCI_IO_START 0x00004000UL -#endif +#endif /* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */ #endif /* !__ASM_MACH_LOONGSON_PCI_H_ */ |