| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * Copyright (c) 2008 Zhang Le <r0bertz@gentoo.org> |
| * Copyright (c) 2009 Wu Zhangjin <wuzhangjin@gmail.com> |
| */ |
| |
| #ifndef __ASM_MACH_LOONGSON2EF_PCI_H_ |
| #define __ASM_MACH_LOONGSON2EF_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_LOONGSON2EF_PCI_H_ */ |
