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77 lines
1.9 KiB
77 lines
1.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* DSM-G600 board-level PCI initialization |
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* |
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* Copyright (C) 2006 Tower Technologies |
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* Author: Alessandro Zummo <[email protected]> |
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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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* Maintainer: http://www.nslu2-linux.org/ |
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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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#include "irqs.h" |
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#define MAX_DEV 4 |
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#define IRQ_LINES 3 |
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/* PCI controller GPIO to IRQ pin mappings */ |
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#define INTA 11 |
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#define INTB 10 |
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#define INTC 9 |
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#define INTD 8 |
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#define INTE 7 |
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#define INTF 6 |
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void __init dsmg600_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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irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); |
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irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); |
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irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW); |
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irq_set_irq_type(IXP4XX_GPIO_IRQ(INTF), IRQ_TYPE_LEVEL_LOW); |
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ixp4xx_pci_preinit(); |
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} |
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static int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
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{ |
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static int pci_irq_table[MAX_DEV][IRQ_LINES] = { |
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{ IXP4XX_GPIO_IRQ(INTE), -1, -1 }, |
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{ IXP4XX_GPIO_IRQ(INTA), -1, -1 }, |
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{ IXP4XX_GPIO_IRQ(INTB), IXP4XX_GPIO_IRQ(INTC), |
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IXP4XX_GPIO_IRQ(INTD) }, |
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{ IXP4XX_GPIO_IRQ(INTF), -1, -1 }, |
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}; |
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if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) |
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return pci_irq_table[slot - 1][pin - 1]; |
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return -1; |
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} |
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struct hw_pci __initdata dsmg600_pci = { |
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.nr_controllers = 1, |
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.ops = &ixp4xx_ops, |
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.preinit = dsmg600_pci_preinit, |
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.setup = ixp4xx_setup, |
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.map_irq = dsmg600_map_irq, |
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}; |
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int __init dsmg600_pci_init(void) |
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{ |
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if (machine_is_dsmg600()) |
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pci_common_init(&dsmg600_pci); |
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return 0; |
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} |
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subsys_initcall(dsmg600_pci_init);
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