ebb4c65869
Mikael Pettersson reported: The 2.6.28-rc kernels fail to detect PCI device 0000:00:01.0 (the first ethernet port) on my Thecus n2100 XScale box. There is however still a strange "ghost" device that gets partially detected in 2.6.28-rc2 vanilla. The IOP321 manual says: The user designates the memory region containing the OCCDR as non-cacheable and non-bufferable from the IntelR XScaleTM core. This guarantees that all load/stores to the OCCDR are only of DWORD quantities. Ensure that the OCCDR is so mapped. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* arch/arm/plat-iop/setup.c
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*
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* Author: Nicolas Pitre <nico@cam.org>
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* Copyright (C) 2001 MontaVista Software, Inc.
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* Copyright (C) 2004 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <asm/mach/map.h>
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#include <asm/hardware/iop3xx.h>
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/*
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* Standard IO mapping for all IOP3xx based systems. Note that
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* the IOP3xx OCCDR must be mapped uncached and unbuffered.
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*/
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static struct map_desc iop3xx_std_desc[] __initdata = {
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{ /* mem mapped registers */
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.virtual = IOP3XX_PERIPHERAL_VIRT_BASE,
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.pfn = __phys_to_pfn(IOP3XX_PERIPHERAL_PHYS_BASE),
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.length = IOP3XX_PERIPHERAL_SIZE,
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.type = MT_UNCACHED,
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}, { /* PCI IO space */
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.virtual = IOP3XX_PCI_LOWER_IO_VA,
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.pfn = __phys_to_pfn(IOP3XX_PCI_LOWER_IO_PA),
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.length = IOP3XX_PCI_IO_WINDOW_SIZE,
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.type = MT_DEVICE,
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},
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};
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void __init iop3xx_map_io(void)
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{
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iotable_init(iop3xx_std_desc, ARRAY_SIZE(iop3xx_std_desc));
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}
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