--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/include/linux/msi.h Sun Jan 11 20:20:11 2009 +0100
@@ -0,0 +1,50 @@
+#ifndef LINUX_MSI_H
+#define LINUX_MSI_H
+
+#include <linux/list.h>
+
+struct msi_msg {
+ u32 address_lo; /* low 32 bits of msi message address */
+ u32 address_hi; /* high 32 bits of msi message address */
+ u32 data; /* 16 bits of msi message data */
+};
+
+/* Helper functions */
+extern void mask_msi_irq(unsigned int irq);
+extern void unmask_msi_irq(unsigned int irq);
+extern void read_msi_msg(unsigned int irq, struct msi_msg *msg);
+extern void write_msi_msg(unsigned int irq, struct msi_msg *msg);
+
+struct msi_desc {
+ struct {
+ __u8 type : 5; /* {0: unused, 5h:MSI, 11h:MSI-X} */
+ __u8 maskbit : 1; /* mask-pending bit supported ? */
+ __u8 masked : 1;
+ __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */
+ __u8 pos; /* Location of the msi capability */
+ __u32 maskbits_mask; /* mask bits mask */
+ __u16 entry_nr; /* specific enabled entry */
+ unsigned default_irq; /* default pre-assigned irq */
+ }msi_attrib;
+
+ unsigned int irq;
+ struct list_head list;
+
+ void __iomem *mask_base;
+ struct pci_dev *dev;
+
+ /* Last set MSI message */
+ struct msi_msg msg;
+};
+
+/*
+ * The arch hook for setup up msi irqs
+ */
+int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
+void arch_teardown_msi_irq(unsigned int irq);
+extern int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
+extern void arch_teardown_msi_irqs(struct pci_dev *dev);
+extern int arch_msi_check_device(struct pci_dev* dev, int nvec, int type);
+
+
+#endif /* LINUX_MSI_H */