summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/irq_remapping.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/include/asm/irq_remapping.h')
-rw-r--r--arch/x86/include/asm/irq_remapping.h118
1 files changed, 87 insertions, 31 deletions
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 47d99934580f..5fb9bbbd2f14 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -1,45 +1,101 @@
-#ifndef _ASM_X86_IRQ_REMAPPING_H
-#define _ASM_X86_IRQ_REMAPPING_H
+/*
+ * 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 the interface of the interrupt remapping code to
+ * the x86 interrupt management code.
+ */
-#define IRTE_DEST(dest) ((x2apic_mode) ? dest : dest << 8)
+#ifndef __X86_IRQ_REMAPPING_H
+#define __X86_IRQ_REMAPPING_H
+
+#include <asm/io_apic.h>
#ifdef CONFIG_IRQ_REMAP
-static void irq_remap_modify_chip_defaults(struct irq_chip *chip);
-static inline void prepare_irte(struct irte *irte, int vector,
- unsigned int dest)
+
+extern int irq_remapping_enabled;
+
+extern void setup_irq_remapping_ops(void);
+extern int irq_remapping_supported(void);
+extern int irq_remapping_prepare(void);
+extern int irq_remapping_enable(void);
+extern void irq_remapping_disable(void);
+extern int irq_remapping_reenable(int);
+extern int irq_remap_enable_fault_handling(void);
+extern int setup_ioapic_remapped_entry(int irq,
+ struct IO_APIC_route_entry *entry,
+ unsigned int destination,
+ int vector,
+ struct io_apic_irq_attr *attr);
+extern int set_remapped_irq_affinity(struct irq_data *data,
+ const struct cpumask *mask,
+ bool force);
+extern void free_remapped_irq(int irq);
+extern void compose_remapped_msi_msg(struct pci_dev *pdev,
+ unsigned int irq, unsigned int dest,
+ struct msi_msg *msg, u8 hpet_id);
+extern int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
+extern int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
+ int index, int sub_handle);
+extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
+
+#else /* CONFIG_IRQ_REMAP */
+
+#define irq_remapping_enabled 0
+
+static inline void setup_irq_remapping_ops(void) { }
+static inline int irq_remapping_supported(void) { return 0; }
+static inline int irq_remapping_prepare(void) { return -ENODEV; }
+static inline int irq_remapping_enable(void) { return -ENODEV; }
+static inline void irq_remapping_disable(void) { }
+static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
+static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
+static inline int setup_ioapic_remapped_entry(int irq,
+ struct IO_APIC_route_entry *entry,
+ unsigned int destination,
+ int vector,
+ struct io_apic_irq_attr *attr)
+{
+ return -ENODEV;
+}
+static inline int set_remapped_irq_affinity(struct irq_data *data,
+ const struct cpumask *mask,
+ bool force)
{
- memset(irte, 0, sizeof(*irte));
-
- irte->present = 1;
- irte->dst_mode = apic->irq_dest_mode;
- /*
- * Trigger mode in the IRTE will always be edge, and for IO-APIC, the
- * actual level or edge trigger will be setup in the IO-APIC
- * RTE. This will help simplify level triggered irq migration.
- * For more details, see the comments (in io_apic.c) explainig IO-APIC
- * irq migration in the presence of interrupt-remapping.
- */
- irte->trigger_mode = 0;
- irte->dlvry_mode = apic->irq_delivery_mode;
- irte->vector = vector;
- irte->dest_id = IRTE_DEST(dest);
- irte->redir_hint = 1;
+ return 0;
}
-static inline bool irq_remapped(struct irq_cfg *cfg)
+static inline void free_remapped_irq(int irq) { }
+static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
+ unsigned int irq, unsigned int dest,
+ struct msi_msg *msg, u8 hpet_id)
{
- return cfg->irq_2_iommu.iommu != NULL;
}
-#else
-static void prepare_irte(struct irte *irte, int vector, unsigned int dest)
+static inline int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec)
{
+ return -ENODEV;
}
-static inline bool irq_remapped(struct irq_cfg *cfg)
+static inline int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
+ int index, int sub_handle)
{
- return false;
+ return -ENODEV;
}
-static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
+static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
{
+ return -ENODEV;
}
-#endif
+#endif /* CONFIG_IRQ_REMAP */
-#endif /* _ASM_X86_IRQ_REMAPPING_H */
+#endif /* __X86_IRQ_REMAPPING_H */