1 files changed, 61 insertions, 2 deletions

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index a4d44aad0697..59fae2e5ea59 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -32,6 +32,9 @@
 /* xHCI PCI Configuration Registers */
 #define XHCI_SBRN_OFFSET        (0x60)
 
+/* Max number of USB devices for any host controller - limit in section 6.1 */
+#define MAX_HC_SLOTS            256
+
 /*
  * xHCI register interface.
  * This corresponds to the eXtensible Host Controller Interface (xHCI)
@@ -359,10 +362,35 @@ struct intr_reg {
         u32     erst_dequeue[2];
 } __attribute__ ((packed));
 
+/* irq_pending bitmasks */
 #define ER_IRQ_PENDING(p)       ((p) & 0x1)
-#define ER_IRQ_ENABLE(p)        ((p) | 0x2)
+/* bits 2:31 need to be preserved */
+#define ER_IRQ_CLEAR(p)         ((p) & 0xfffffffe)
+#define ER_IRQ_ENABLE(p)        ((ER_IRQ_CLEAR(p)) | 0x2)
+#define ER_IRQ_DISABLE(p)       ((ER_IRQ_CLEAR(p)) & ~(0x2))
+
+/* irq_control bitmasks */
+/* Minimum interval between interrupts (in 250ns intervals).  The interval
+ * between interrupts will be longer if there are no events on the event ring.
+ * Default is 4000 (1 ms).
+ */
+#define ER_IRQ_INTERVAL_MASK    (0xffff)
+/* Counter used to count down the time to the next interrupt - HW use only */
+#define ER_IRQ_COUNTER_MASK     (0xffff << 16)
+
+/* erst_size bitmasks */
 /* Preserve bits 16:31 of erst_size */
-#define ERST_SIZE_MASK  (0xffff<<16)
+#define ERST_SIZE_MASK          (0xffff << 16)
+
+/* erst_dequeue bitmasks */
+/* Dequeue ERST Segment Index (DESI) - Segment number (or alias)
+ * where the current dequeue pointer lies.  This is an optional HW hint.
+ */
+#define ERST_DESI_MASK          (0x7)
+/* Event Handler Busy (EHB) - is the event ring scheduled to be serviced by
+ * a work queue (or delayed service routine)?
+ */
+#define ERST_EHB                (1 << 3)
 
 /**
  * struct xhci_run_regs
@@ -386,6 +414,8 @@ struct xhci_hcd {
         struct xhci_cap_regs __iomem *cap_regs;
         struct xhci_op_regs __iomem *op_regs;
         struct xhci_run_regs __iomem *run_regs;
+        /* Our HCD's current interrupter register set */
+        struct  intr_reg __iomem *ir_set;
 
         /* Cached register copies of read-only HC data */
         __u32           hcs_params1;
@@ -404,7 +434,13 @@ struct xhci_hcd {
         u8              isoc_threshold;
         int             event_ring_max;
         int             addr_64;
+        /* 4KB min, 128MB max */
         int             page_size;
+        /* Valid values are 12 to 20, inclusive */
+        int             page_shift;
+        /* only one MSI vector for now, but might need more later */
+        int             msix_count;
+        struct msix_entry       *msix_entries;
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */
@@ -449,4 +485,27 @@ static inline void xhci_writel(const struct xhci_hcd *xhci,
         writel(val, regs);
 }
 
+/* xHCI debugging */
+void xhci_print_ir_set(struct xhci_hcd *xhci, struct intr_reg *ir_set, int set_num);
+void xhci_print_registers(struct xhci_hcd *xhci);
+
+/* xHCI memory managment */
+void xhci_mem_cleanup(struct xhci_hcd *xhci);
+int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags);
+
+#ifdef CONFIG_PCI
+/* xHCI PCI glue */
+int xhci_register_pci(void);
+void xhci_unregister_pci(void);
+#endif
+
+/* xHCI host controller glue */
+int xhci_halt(struct xhci_hcd *xhci);
+int xhci_reset(struct xhci_hcd *xhci);
+int xhci_init(struct usb_hcd *hcd);
+int xhci_run(struct usb_hcd *hcd);
+void xhci_stop(struct usb_hcd *hcd);
+void xhci_shutdown(struct usb_hcd *hcd);
+int xhci_get_frame(struct usb_hcd *hcd);
+
 #endif /* __LINUX_XHCI_HCD_H */