Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull iommu core changes from Ingo Molnar:
 "The IOMMU changes in this cycle are mostly about factoring out
  Intel-VT-d specific IRQ remapping details and introducing struct
  irq_remap_ops, in preparation for AMD specific hardware."

* 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  iommu: Fix off by one in dmar_get_fault_reason()
  irq_remap: Fix the 'sub_handle' uninitialized warning
  irq_remap: Fix UP build failure
  irq_remap: Fix compiler warning with CONFIG_IRQ_REMAP=y
  iommu: rename intr_remapping.[ch] to irq_remapping.[ch]
  iommu: rename intr_remapping references to irq_remapping
  x86, iommu/vt-d: Clean up interfaces for interrupt remapping
  iommu/vt-d: Convert MSI remapping setup to remap_ops
  iommu/vt-d: Convert free_irte into a remap_ops callback
  iommu/vt-d: Convert IR set_affinity function to remap_ops
  iommu/vt-d: Convert IR ioapic-setup to use remap_ops
  iommu/vt-d: Convert missing apic.c intr-remapping call to remap_ops
  iommu/vt-d: Make intr-remapping initialization generic
  iommu: Rename intr_remapping files to intel_intr_remapping

1 files changed, 90 insertions, 0 deletions

diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
new file mode 100644
index 00000000000..be9d72950c5
--- /dev/null
+++ b/drivers/iommu/irq_remapping.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * Author: Joerg Roedel <joerg.roedel@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * This header file contains stuff that is shared between different interrupt
+ * remapping drivers but with no need to be visible outside of the IOMMU layer.
+ */
+
+#ifndef __IRQ_REMAPPING_H
+#define __IRQ_REMAPPING_H
+
+#ifdef CONFIG_IRQ_REMAP
+
+struct IO_APIC_route_entry;
+struct io_apic_irq_attr;
+struct irq_data;
+struct cpumask;
+struct pci_dev;
+struct msi_msg;
+
+extern int disable_irq_remap;
+extern int disable_sourceid_checking;
+extern int no_x2apic_optout;
+
+struct irq_remap_ops {
+	/* Check whether Interrupt Remapping is supported */
+	int (*supported)(void);
+
+	/* Initializes hardware and makes it ready for remapping interrupts */
+	int  (*prepare)(void);
+
+	/* Enables the remapping hardware */
+	int  (*enable)(void);
+
+	/* Disables the remapping hardware */
+	void (*disable)(void);
+
+	/* Reenables the remapping hardware */
+	int  (*reenable)(int);
+
+	/* Enable fault handling */
+	int  (*enable_faulting)(void);
+
+	/* IO-APIC setup routine */
+	int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *,
+				  unsigned int, int,
+				  struct io_apic_irq_attr *);
+
+#ifdef CONFIG_SMP
+	/* Set the CPU affinity of a remapped interrupt */
+	int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
+			    bool force);
+#endif
+
+	/* Free an IRQ */
+	int (*free_irq)(int);
+
+	/* Create MSI msg to use for interrupt remapping */
+	void (*compose_msi_msg)(struct pci_dev *,
+				unsigned int, unsigned int,
+				struct msi_msg *, u8);
+
+	/* Allocate remapping resources for MSI */
+	int (*msi_alloc_irq)(struct pci_dev *, int, int);
+
+	/* Setup the remapped MSI irq */
+	int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
+
+	/* Setup interrupt remapping for an HPET MSI */
+	int (*setup_hpet_msi)(unsigned int, unsigned int);
+};
+
+extern struct irq_remap_ops intel_irq_remap_ops;
+
+#endif /* CONFIG_IRQ_REMAP */
+
+#endif /* __IRQ_REMAPPING_H */