2 files changed, 13 insertions, 0 deletions
diff --git a/sys/include/dev/pci/pci.h b/sys/include/dev/pci/pci.h
index 3340e1a..497bfc7 100644
--- a/sys/include/dev/pci/pci.h
+++ b/sys/include/dev/pci/pci.h
@@ -54,6 +54,7 @@ struct pci_device {
     uint8_t slot;
     uint8_t func;
 
+    uint16_t msix_capoff;
     uint16_t device_id;
     uint16_t vendor_id;
     uint8_t pci_class;
@@ -64,11 +65,18 @@ struct pci_device {
     TAILQ_ENTRY(pci_device) link;
 };
 
+struct msi_intr {
+    const char *name;
+    void(*handler)(void *);
+};
+
 pcireg_t pci_readl(struct pci_device *dev, uint32_t offset);
 struct pci_device *pci_get_device(struct pci_lookup lookup, uint16_t lookup_type);
 
 int pci_map_bar(struct pci_device *dev, uint8_t barno, void **vap);
 void pci_writel(struct pci_device *dev, uint32_t offset, pcireg_t val);
+
+int pci_enable_msix(struct pci_device *dev, const struct msi_intr *intr);
 int pci_init(void);
 
 #endif  /* !_PCI_H_ */
diff --git a/sys/include/dev/pci/pciregs.h b/sys/include/dev/pci/pciregs.h
index c1b02e9..763fade 100644
--- a/sys/include/dev/pci/pciregs.h
+++ b/sys/include/dev/pci/pciregs.h
@@ -42,6 +42,7 @@
 #define PCIREG_BAR4       0x20  /* 32 bits */
 #define PCIREG_BAR5       0x24  /* 32 bits */
 #define PCIREG_IRQLINE    0x3C  /* 8 bits */
+#define PCIREG_CAPPTR     0x34  /* 8 bits */
 #define PCIREG_CMDSTATUS  0x04  /* command (15:0), status (31:16) */
 
 /* Macros to extract PCIREG_CLASSREV bits */
@@ -64,4 +65,8 @@
 #define PCI_STATUS_CAPLIST  BIT(4)
 #define PCI_STATUS_66MHZ    BIT(5)
 
+/* Capability IDs */
+#define PCI_CAP_MSI     0x05
+#define PCI_CAP_MSIX    0x11
+
 #endif  /* _PCI_PCIREGS_H_ */