This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / linux / msi.h

diff --git a/include/linux/msi.h b/include/linux/msi.h
new file mode 100644 (file)
index 0000000..7203849
--- /dev/null
+++ b/include/linux/msi.h
@@ -0,0 +1,52 @@
+#ifndef LINUX_MSI_H
+#define LINUX_MSI_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 */
+};
+
+/* Heper functions */
+extern void mask_msi_irq(unsigned int irq);
+extern void unmask_msi_irq(unsigned int irq);
+extern void disable_msi_irq(unsigned int irq);
+extern void enable_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);
+extern void msix_flush_writes(unsigned int irq);
+
+struct msi_desc {
+       struct {
+               __u8    type    : 5;    /* {0: unused, 5h:MSI, 11h:MSI-X} */
+               __u8    maskbit : 1;    /* mask-pending bit supported ?   */
+               __u8    unused  : 1;
+               __u8    is_64   : 1;    /* Address size: 0=32bit 1=64bit  */
+               __u8    pos;            /* Location of the msi capability */
+               __u16   entry_nr;       /* specific enabled entry         */
+               unsigned default_irq;   /* default pre-assigned irq       */
+       }msi_attrib;
+
+       struct {
+               __u16   head;
+               __u16   tail;
+       }link;
+
+       void __iomem *mask_base;
+       struct pci_dev *dev;
+
+#ifdef CONFIG_PM
+       /* PM save area for MSIX address/data */
+       struct msi_msg msg_save;
+#endif
+};
+
+/*
+ * The arch hook for setup up msi irqs
+ */
+int arch_setup_msi_irq(unsigned int irq, struct pci_dev *dev);
+void arch_teardown_msi_irq(unsigned int irq);
+
+
+#endif /* LINUX_MSI_H */