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46 lines
1.4 KiB
46 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (c) 2008 Zhang Le <[email protected]> |
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* Copyright (c) 2009 Wu Zhangjin <[email protected]> |
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*/ |
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#ifndef __ASM_MACH_LOONGSON2EF_PCI_H_ |
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#define __ASM_MACH_LOONGSON2EF_PCI_H_ |
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extern struct pci_ops loongson_pci_ops; |
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/* this is an offset from mips_io_port_base */ |
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#define LOONGSON_PCI_IO_START 0x00004000UL |
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#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG |
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/* |
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* we use address window2 to map cpu address space to pci space |
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* window2: cpu [1G, 2G] -> pci [1G, 2G] |
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* why not use window 0 & 1? because they are used by cpu when booting. |
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* window0: cpu [0, 256M] -> ddr [0, 256M] |
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* window1: cpu [256M, 512M] -> pci [256M, 512M] |
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*/ |
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/* the smallest LOONGSON_CPU_MEM_SRC can be 512M */ |
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#define LOONGSON_CPU_MEM_SRC 0x40000000ul /* 1G */ |
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#define LOONGSON_PCI_MEM_DST LOONGSON_CPU_MEM_SRC |
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#define LOONGSON_PCI_MEM_START LOONGSON_PCI_MEM_DST |
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#define LOONGSON_PCI_MEM_END (0x80000000ul-1) /* 2G */ |
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#define MMAP_CPUTOPCI_SIZE (LOONGSON_PCI_MEM_END - \ |
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LOONGSON_PCI_MEM_START + 1) |
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#else /* loongson2f/32bit & loongson2e */ |
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/* this pci memory space is mapped by pcimap in pci.c */ |
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#define LOONGSON_PCI_MEM_START LOONGSON_PCILO1_BASE |
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#define LOONGSON_PCI_MEM_END (LOONGSON_PCILO1_BASE + 0x04000000 * 2) |
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/* this is an offset from mips_io_port_base */ |
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#define LOONGSON_PCI_IO_START 0x00004000UL |
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#endif /* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */ |
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#endif /* !__ASM_MACH_LOONGSON2EF_PCI_H_ */
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