1 files changed, 29 insertions, 5 deletions

diff --git a/arch/mips/include/asm/mach-loongson/pci.h b/arch/mips/include/asm/mach-loongson/pci.h
index f1663ca81da0..a199a4f6de4e 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
@@ -22,16 +23,39 @@
 #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;
 
-#ifdef CONFIG_LEMOTE_FULOONG2E
+/* 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  BONITO_PCILO1_BASE
-#define LOONGSON_PCI_MEM_END    (BONITO_PCILO1_BASE + 0x04000000 * 2)
+#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
+#endif  /* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */
 
 #endif /* !__ASM_MACH_LOONGSON_PCI_H_ */