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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/iommu/irq_remapping.h
Initial import
Diffstat (limited to 'drivers/iommu/irq_remapping.h')
-rw-r--r--drivers/iommu/irq_remapping.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
new file mode 100644
index 000000000..7c70cc29f
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+++ b/drivers/iommu/irq_remapping.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * Author: Joerg Roedel <jroedel@suse.de>
+ *
+ * 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 irq_remap_broken;
+extern int disable_sourceid_checking;
+extern int no_x2apic_optout;
+extern int irq_remapping_enabled;
+
+struct irq_remap_ops {
+ /* 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 *);
+
+ /* Set the CPU affinity of a remapped interrupt */
+ int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
+ bool force);
+
+ /* 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 (*alloc_hpet_msi)(unsigned int, unsigned int);
+};
+
+extern struct irq_remap_ops intel_irq_remap_ops;
+extern struct irq_remap_ops amd_iommu_irq_ops;
+
+#else /* CONFIG_IRQ_REMAP */
+
+#define irq_remapping_enabled 0
+#define irq_remap_broken 0
+
+#endif /* CONFIG_IRQ_REMAP */
+
+#endif /* __IRQ_REMAPPING_H */