982792f458
Move PCI configuration space, MMIO and memory to the KIO range to free vmalloc area and use static TLB to access them. Move MMIO to the beginning of KIO and define PCI_IOBASE as XCHAL_KIO_BYPASS_VADDR to match it. Reduce number of supported PCI buses to 0x3f so that ECAM window fits into first 64MB of the KIO. Reduce size of the PCI memory window to 128MB so that it fits into KIO. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
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* include/asm-xtensa/io.h
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 - 2005 Tensilica Inc.
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*/
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#ifndef _XTENSA_IO_H
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#define _XTENSA_IO_H
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#include <asm/byteorder.h>
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#include <asm/page.h>
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#include <asm/vectors.h>
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#include <linux/bug.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x))
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#define IO_SPACE_LIMIT ~0
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#define PCI_IOBASE ((void __iomem *)XCHAL_KIO_BYPASS_VADDR)
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#ifdef CONFIG_MMU
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void __iomem *xtensa_ioremap_nocache(unsigned long addr, unsigned long size);
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void __iomem *xtensa_ioremap_cache(unsigned long addr, unsigned long size);
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void xtensa_iounmap(volatile void __iomem *addr);
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/*
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* Return the virtual address for the specified bus memory.
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*/
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static inline void __iomem *ioremap_nocache(unsigned long offset,
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unsigned long size)
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{
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if (offset >= XCHAL_KIO_PADDR
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&& offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
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return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
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else
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return xtensa_ioremap_nocache(offset, size);
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}
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static inline void __iomem *ioremap_cache(unsigned long offset,
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unsigned long size)
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{
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if (offset >= XCHAL_KIO_PADDR
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&& offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
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return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
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else
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return xtensa_ioremap_cache(offset, size);
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}
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#define ioremap_cache ioremap_cache
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#define ioremap_nocache ioremap_nocache
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#define ioremap_wc ioremap_nocache
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#define ioremap_wt ioremap_nocache
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static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
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{
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return ioremap_nocache(offset, size);
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}
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static inline void iounmap(volatile void __iomem *addr)
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{
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unsigned long va = (unsigned long) addr;
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if (!(va >= XCHAL_KIO_CACHED_VADDR &&
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va - XCHAL_KIO_CACHED_VADDR < XCHAL_KIO_SIZE) &&
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!(va >= XCHAL_KIO_BYPASS_VADDR &&
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va - XCHAL_KIO_BYPASS_VADDR < XCHAL_KIO_SIZE))
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xtensa_iounmap(addr);
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}
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#define virt_to_bus virt_to_phys
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#define bus_to_virt phys_to_virt
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#endif /* CONFIG_MMU */
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#include <asm-generic/io.h>
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#endif /* _XTENSA_IO_H */
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