2 files changed, 47 insertions, 0 deletions
diff --git a/sys/include/dev/usb/xhciregs.h b/sys/include/dev/usb/xhciregs.h
index 8c47739..0416601 100644
--- a/sys/include/dev/usb/xhciregs.h
+++ b/sys/include/dev/usb/xhciregs.h
@@ -73,6 +73,7 @@ struct xhci_opregs {
 /* USBCMD bits */
 #define USBCMD_RUN      BIT(0)    /* Run/stop */
 #define USBCMD_HCRST    BIT(1)    /* xHC reset */
+#define USBCMD_INTE     BIT(2)    /* Interrupt Enable */
 
 /* USBSTS bits */
 #define USBSTS_HCH      BIT(0)    /* HC halted */
@@ -113,4 +114,8 @@ struct xhci_opregs {
 #define XHCI_BIOS_SEM   BIT(16)
 #define XHCI_OS_SEM     BIT(24)
 
+/* IMAN bits */
+#define XHCI_IMAN_IP    BIT(0)
+#define XHCI_IMAN_IE    BIT(1)
+
 #endif  /* !_USB_XHCIREGS_H_ */
diff --git a/sys/include/dev/usb/xhcivar.h b/sys/include/dev/usb/xhcivar.h
index cd445c8..6d0e185 100644
--- a/sys/include/dev/usb/xhcivar.h
+++ b/sys/include/dev/usb/xhcivar.h
@@ -39,6 +39,7 @@
 #define XHCI_EVRING_LEN 16
 #define XHCI_TRB_SIZE 16   /* In bytes */
 #define XHCI_MAX_PROTOS 4
+#define XHCI_IMOD_DEFAULT 0
 
 /*
  * USB proto (USB 2.0 or 3.0)
@@ -49,6 +50,43 @@ struct xhci_proto {
     uint8_t port_count; /* Number of ports */
 };
 
+struct xhci_nop_trb {
+    uint32_t reserved;
+    uint32_t reserved1;
+    uint32_t reserved2;
+    uint8_t cycle : 1;
+    uint16_t reserved3 : 9;
+    uint8_t type : 6;
+    uint16_t reserved4;
+};
+
+struct xhci_enableslot_trb {
+    uint32_t reserved;
+    uint32_t reserved1;
+    uint32_t reserved2;
+    uint8_t cycle : 1;
+    uint16_t reserved3 : 9;
+    uint8_t type : 6;
+    uint8_t slot_type : 5;
+    uint16_t reserved4 : 10;
+};
+
+/*
+ * xHCI Transfer Request Block
+ */
+struct xhci_trb {
+    union {
+        struct xhci_nop_trb nop;
+        struct xhci_enableslot_trb enableslot;
+        struct {
+            uint32_t dword0;
+            uint32_t dword1;
+            uint32_t dword2;
+            uint32_t dword3;
+        };
+    };
+};
+
 /*
  * xHCI event ring segment
  *
@@ -77,4 +115,8 @@ struct xhci_hc {
     struct xhci_proto protos[XHCI_MAX_PROTOS];
 };
 
+/* TRB types */
+#define XHCI_ENABLE_SLOT    9
+#define XHCI_LINK           6
+
 #endif  /* !_USB_XHCIVAR_H_ */