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a62b32cdd0
Use new irqdomain interfaces to allocate/free IRQ for DMAR and interrupt remapping, so we can remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later. The private definitions of irq_alloc_hwirqs()/irq_free_hwirqs() are a temporary solution, they will be removed once we have converted the interrupt remapping driver to use irqdomain framework. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: iommu@lists.linux-foundation.org Cc: Joerg Roedel <jroedel@suse.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Joerg Roedel <joro@8bytes.org> Link: http://lkml.kernel.org/r/1428905519-23704-8-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/*
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* Copyright (C) 2012 Advanced Micro Devices, Inc.
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* Author: Joerg Roedel <joerg.roedel@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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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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* This header file contains the interface of the interrupt remapping code to
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* the x86 interrupt management code.
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*/
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#ifndef __X86_IRQ_REMAPPING_H
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#define __X86_IRQ_REMAPPING_H
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#include <asm/io_apic.h>
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struct IO_APIC_route_entry;
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struct io_apic_irq_attr;
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struct irq_chip;
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struct msi_msg;
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struct pci_dev;
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struct irq_cfg;
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#ifdef CONFIG_IRQ_REMAP
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extern void set_irq_remapping_broken(void);
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extern int irq_remapping_prepare(void);
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extern int irq_remapping_enable(void);
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extern void irq_remapping_disable(void);
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extern int irq_remapping_reenable(int);
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extern int irq_remap_enable_fault_handling(void);
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extern int setup_ioapic_remapped_entry(int irq,
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struct IO_APIC_route_entry *entry,
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unsigned int destination,
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int vector,
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struct io_apic_irq_attr *attr);
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extern void free_remapped_irq(int irq);
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extern void compose_remapped_msi_msg(struct pci_dev *pdev,
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unsigned int irq, unsigned int dest,
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struct msi_msg *msg, u8 hpet_id);
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extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
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extern void panic_if_irq_remap(const char *msg);
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extern bool setup_remapped_irq(int irq,
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struct irq_cfg *cfg,
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struct irq_chip *chip);
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void irq_remap_modify_chip_defaults(struct irq_chip *chip);
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#else /* CONFIG_IRQ_REMAP */
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static inline void set_irq_remapping_broken(void) { }
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static inline int irq_remapping_prepare(void) { return -ENODEV; }
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static inline int irq_remapping_enable(void) { return -ENODEV; }
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static inline void irq_remapping_disable(void) { }
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static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
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static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
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static inline int setup_ioapic_remapped_entry(int irq,
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struct IO_APIC_route_entry *entry,
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unsigned int destination,
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int vector,
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struct io_apic_irq_attr *attr)
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{
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return -ENODEV;
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}
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static inline void free_remapped_irq(int irq) { }
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static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
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unsigned int irq, unsigned int dest,
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struct msi_msg *msg, u8 hpet_id)
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{
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}
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static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
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{
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return -ENODEV;
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}
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static inline void panic_if_irq_remap(const char *msg)
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{
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}
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static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
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{
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}
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static inline bool setup_remapped_irq(int irq,
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struct irq_cfg *cfg,
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struct irq_chip *chip)
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{
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return false;
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}
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#endif /* CONFIG_IRQ_REMAP */
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extern int dmar_alloc_hwirq(void);
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extern void dmar_free_hwirq(int irq);
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#endif /* __X86_IRQ_REMAPPING_H */
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