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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b920de1b77
Add architecture support for the MN10300/AM33 CPUs produced by MEI to the kernel. This patch also adds board support for the ASB2303 with the ASB2308 daughter board, and the ASB2305. The only processor supported is the MN103E010, which is an AM33v2 core plus on-chip devices. [akpm@linux-foundation.org: nuke cvs control strings] Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com> Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* PCI IRQ routing on the MN103E010 based ASB2305
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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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 Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*
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* This is simple: All PCI interrupts route through the CPU's XIRQ1 pin [IRQ 35]
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <asm/io.h>
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#include <asm/smp.h>
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#include "pci-asb2305.h"
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void __init pcibios_irq_init(void)
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{
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}
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void __init pcibios_fixup_irqs(void)
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{
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struct pci_dev *dev = NULL;
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u8 line, pin;
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while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
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pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
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if (pin) {
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dev->irq = XIRQ1;
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pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
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dev->irq);
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}
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pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
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}
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}
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void __init pcibios_penalize_isa_irq(int irq)
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{
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}
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void pcibios_enable_irq(struct pci_dev *dev)
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{
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pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
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}
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