54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
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/*
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* linux/arch/sh/boards/mb374/mach.c
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*
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* Copyright (C) 2000 Stuart Menefy (stuart.menefy@st.com)
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*
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* May be copied or modified under the terms of the GNU General Public
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* License. See linux/COPYING for more information.
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*
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* Machine vector for the STMicroelectronics STB40RA Starter board.
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*/
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#include <asm/io.h>
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#include <mach/epld.h>
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#include "../../../drivers/pci/pci-st40.h"
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static void __iomem *mb374_ioport_map(unsigned long port, unsigned int size)
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{
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#ifdef CONFIG_PCI
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/* This is something of a hack, to avoid problems with the IDE
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* driver trying to access non-existant memory. So we only
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* return valid addresses for PCI, and redirect everything else
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* to somewhere safe.
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*/
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if ((port >= PCIBIOS_MIN_IO) &&
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(port < ((64 * 1024) - PCIBIOS_MIN_IO + 1))) {
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return port + ST40PCI_IO_ADDRESS;
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}
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#endif
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/* However picking somewhere safe isn't as easy as you might think.
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* I used to use external ROM, but that can cause problems if you are
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* in the middle of updating Flash. So I'm now using the processor core
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* version register, which is guaranted to be available, and non-writable.
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*/
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return (void __iomem *)CCN_PVR;
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}
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void __init mb374_setup(char **cmdline_p);
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static struct sh_machine_vector mv_mb374 __initmv = {
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.mv_name = "ST40RA/ST40STB1 Starter",
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.mv_setup = mb374_setup,
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.mv_nr_irqs = NR_IRQS,
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.mv_ioport_map = mb374_ioport_map,
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#ifdef CONFIG_PCI
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.mv_init_irq = harp_init_irq,
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#endif
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};
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