diff options
Diffstat (limited to 'arch/mips/include/asm/mach-loongson/pci.h')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson/pci.h | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/arch/mips/include/asm/mach-loongson/pci.h b/arch/mips/include/asm/mach-loongson/pci.h index 576487c0047..31ba90891ec 100644 --- a/arch/mips/include/asm/mach-loongson/pci.h +++ b/arch/mips/include/asm/mach-loongson/pci.h @@ -1,5 +1,6 @@ /* * 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 @@ -24,7 +25,30 @@ extern struct pci_ops loongson_pci_ops; -#ifdef CONFIG_LEMOTE_FULOONG2E +/* this is an offset from mips_io_port_base */ +#define LOONGSON_PCI_IO_START 0x00004000UL + +#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT) + +/* + * 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 @@ -32,6 +56,6 @@ extern struct pci_ops loongson_pci_ops; /* this is an offset from mips_io_port_base */ #define LOONGSON_PCI_IO_START 0x00004000UL -#endif +#endif /* !(defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT))*/ #endif /* !__ASM_MACH_LOONGSON_PCI_H_ */ |