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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>
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* arch/arch/mach-ixp4xx/vulcan-pci.c
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*
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* Vulcan board-level PCI initialization
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*
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* Copyright (C) 2010 Marc Zyngier <maz@misterjones.org>
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*
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* based on ixdp425-pci.c:
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* Copyright (C) 2002 Intel Corporation.
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* Copyright (C) 2003-2004 MontaVista Software, Inc.
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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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*/
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <asm/mach/pci.h>
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#include <asm/mach-types.h>
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/* PCI controller GPIO to IRQ pin mappings */
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#define INTA 2
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#define INTB 3
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void __init vulcan_pci_preinit(void)
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{
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#ifndef CONFIG_IXP4XX_INDIRECT_PCI
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/*
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* Cardbus bridge wants way more than the SoC can actually offer,
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* and leaves the whole PCI bus in a mess. Artificially limit it
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* to 8MB per region. Of course indirect mode doesn't have this
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* limitation...
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*/
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pci_cardbus_mem_size = SZ_8M;
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pr_info("Vulcan PCI: limiting CardBus memory size to %dMB\n",
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(int)(pci_cardbus_mem_size >> 20));
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#endif
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irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW);
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ixp4xx_pci_preinit();
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}
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static int __init vulcan_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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if (slot == 1)
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return IXP4XX_GPIO_IRQ(INTA);
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if (slot == 2)
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return IXP4XX_GPIO_IRQ(INTB);
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return -1;
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}
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struct hw_pci vulcan_pci __initdata = {
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.nr_controllers = 1,
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.preinit = vulcan_pci_preinit,
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.swizzle = pci_std_swizzle,
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.setup = ixp4xx_setup,
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.scan = ixp4xx_scan_bus,
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.map_irq = vulcan_map_irq,
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};
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int __init vulcan_pci_init(void)
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{
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if (machine_is_arcom_vulcan())
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pci_common_init(&vulcan_pci);
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return 0;
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}
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subsys_initcall(vulcan_pci_init);
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