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xen: remap MSIs into pirqs when running as initial domain

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Implement xen_create_msi_irq to create an msi and remap it as pirq.
Use xen_create_msi_irq to implement an initial domain specific version
of setup_msi_irqs.

Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Qing He
2010-10-11 15:30:09 +01:00
committed by Stefano Stabellini
parent 38aa66fcb7
commit f731e3ef02
3 changed files with 101 additions and 18 deletions
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4
include/xen/events.h
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@@ -72,8 +72,12 @@ void xen_hvm_evtchn_do_upcall(void);
* usual. */
int xen_allocate_pirq(unsigned gsi, int shareable, char *name);
int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name);
#ifdef CONFIG_PCI_MSI
/* Allocate an irq and a pirq to be used with MSIs. */
void xen_allocate_pirq_msi(char *name, int *irq, int *pirq);
int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type);
#endif
/* De-allocates the above mentioned physical interrupt. */
int xen_destroy_irq(int irq);