c23bfc3835
Most PCI implementations perform simple root bus scanning. Rather than having each group of platforms provide a duplicated bus scan function, provide the PCI configuration ops structure via the hw_pci structure, and call the root bus scanning function from core ARM PCI code. Acked-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/*
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* arch/arm/mach-ixp4xx/gtwx5715-pci.c
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*
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* Gemtek GTWX5715 (Linksys WRV54G) board setup
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*
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* Copyright (C) 2004 George T. Joseph
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* Derived from Coyote
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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/delay.h>
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#include <linux/irq.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <asm/mach/pci.h>
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#define SLOT0_DEVID 0
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#define SLOT1_DEVID 1
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#define INTA 10 /* slot 1 has INTA and INTB crossed */
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#define INTB 11
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/*
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* Slot 0 isn't actually populated with a card connector but
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* we initialize it anyway in case a future version has the
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* slot populated or someone with good soldering skills has
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* some free time.
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*/
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void __init gtwx5715_pci_preinit(void)
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{
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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 gtwx5715_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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int rc = -1;
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if ((slot == SLOT0_DEVID && pin == 1) ||
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(slot == SLOT1_DEVID && pin == 2))
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rc = IXP4XX_GPIO_IRQ(INTA);
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else if ((slot == SLOT0_DEVID && pin == 2) ||
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(slot == SLOT1_DEVID && pin == 1))
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rc = IXP4XX_GPIO_IRQ(INTB);
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printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n",
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__func__, slot, pin, rc);
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return rc;
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}
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struct hw_pci gtwx5715_pci __initdata = {
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.nr_controllers = 1,
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.ops = &ixp4xx_ops,
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.preinit = gtwx5715_pci_preinit,
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.setup = ixp4xx_setup,
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.map_irq = gtwx5715_map_irq,
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};
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int __init gtwx5715_pci_init(void)
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{
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if (machine_is_gtwx5715())
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pci_common_init(>wx5715_pci);
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return 0;
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}
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subsys_initcall(gtwx5715_pci_init);
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