forked from Minki/linux
d5341942d7
Aside of the usual motivation for constification, this function has a history of being abused a hook for interrupt and other fixups so I turned this function const ages ago in the MIPS code but it should be done treewide. Due to function pointer passing in varous places a few other functions had to be constified as well. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> To: Anton Vorontsov <avorontsov@mvista.com> To: Chris Metcalf <cmetcalf@tilera.com> To: Colin Cross <ccross@android.com> Acked-by: "David S. Miller" <davem@davemloft.net> To: Eric Miao <eric.y.miao@gmail.com> To: Erik Gilling <konkers@android.com> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> To: "H. Peter Anvin" <hpa@zytor.com> To: Imre Kaloz <kaloz@openwrt.org> To: Ingo Molnar <mingo@redhat.com> To: Ivan Kokshaysky <ink@jurassic.park.msu.ru> To: Jesse Barnes <jbarnes@virtuousgeek.org> To: Krzysztof Halasa <khc@pm.waw.pl> To: Lennert Buytenhek <kernel@wantstofly.org> To: Matt Turner <mattst88@gmail.com> To: Nicolas Pitre <nico@fluxnic.net> To: Olof Johansson <olof@lixom.net> Acked-by: Paul Mundt <lethal@linux-sh.org> To: Richard Henderson <rth@twiddle.net> To: Russell King <linux@arm.linux.org.uk> To: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-alpha@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-pci@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: x86@kernel.org Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/*
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* arch/sh/drivers/pci/fixups-dreamcast.c
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*
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* PCI fixups for the Sega Dreamcast
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*
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* Copyright (C) 2001, 2002 M. R. Brown
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* Copyright (C) 2002, 2003, 2006 Paul Mundt
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*
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* This file originally bore the message (with enclosed-$):
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* Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
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* Dreamcast PCI: Supports SEGA Broadband Adaptor only.
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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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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <mach/pci.h>
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static void __init gapspci_fixup_resources(struct pci_dev *dev)
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{
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struct pci_channel *p = dev->sysdata;
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printk(KERN_NOTICE "PCI: Fixing up device %s\n", pci_name(dev));
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switch (dev->device) {
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case PCI_DEVICE_ID_SEGA_BBA:
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/*
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* We also assume that dev->devfn == 0
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*/
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dev->resource[1].start = p->resources[0].start + 0x100;
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dev->resource[1].end = dev->resource[1].start + 0x200 - 1;
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/*
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* This is not a normal BAR, prevent any attempts to move
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* the BAR, as this will result in a bus lock.
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*/
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dev->resource[1].flags |= IORESOURCE_PCI_FIXED;
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/*
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* Redirect dma memory allocations to special memory window.
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*/
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BUG_ON(!dma_declare_coherent_memory(&dev->dev,
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GAPSPCI_DMA_BASE,
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GAPSPCI_DMA_BASE,
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GAPSPCI_DMA_SIZE,
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DMA_MEMORY_MAP |
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DMA_MEMORY_EXCLUSIVE));
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break;
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default:
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printk("PCI: Failed resource fixup\n");
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}
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}
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DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources);
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int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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/*
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* The interrupt routing semantics here are quite trivial.
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*
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* We basically only support one interrupt, so we only bother
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* updating a device's interrupt line with this single shared
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* interrupt. Keeps routing quite simple, doesn't it?
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*/
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return GAPSPCI_IRQ;
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}
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