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intr-remap: generic support for remapping HPET MSIs

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Generic support for remapping HPET MSI's by parsing the HPET timer block
device scope in the ACPI DRHD tables. This is needed for platforms
supporting interrupt-remapping and MSI capable HPET timer block.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Jay Fenlason <fenlason@redhat.com>
LKML-Reference: <20090804190729.477649000@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Suresh Siddha 2009-08-04 12:07:08 -07:00 • committed by Thomas Gleixner
parent 5946fa3d5c
commit 20f3097bfe
4 changed files with 104 additions and 4 deletions
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10
include/linux/dmar.h
View file

@ -126,7 +126,9 @@ extern int free_irte(int irq);
extern int irq_remapped(int irq);
extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
extern struct intel_iommu *map_ioapic_to_ir(int apic);
extern struct intel_iommu *map_hpet_to_ir(u8 id);
extern int set_ioapic_sid(struct irte *irte, int apic);
extern int set_hpet_sid(struct irte *irte, u8 id);
extern int set_msi_sid(struct irte *irte, struct pci_dev *dev);
#else
static inline int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
@ -158,10 +160,18 @@ static inline struct intel_iommu *map_ioapic_to_ir(int apic)
{
return NULL;
}
static inline struct intel_iommu *map_hpet_to_ir(unsigned int hpet_id)
{
return NULL;
}
static inline int set_ioapic_sid(struct irte *irte, int apic)
{
return 0;
}
static inline int set_hpet_sid(struct irte *irte, u8 id)
{
return -1;
}
static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
{
return 0;