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path: root/drivers/usb/host/uhci-hcd.h
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Diffstat (limited to 'drivers/usb/host/uhci-hcd.h')
-rw-r--r--drivers/usb/host/uhci-hcd.h59
1 files changed, 37 insertions, 22 deletions
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 02255d69e1f..bf9c5f9b508 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -41,6 +41,7 @@
#define USBFRNUM 6
#define USBFLBASEADD 8
#define USBSOF 12
+#define USBSOF_DEFAULT 64 /* Frame length is exactly 1 ms */
/* USB port status and control registers */
#define USBPORTSC1 16
@@ -66,6 +67,8 @@
/* Legacy support register */
#define USBLEGSUP 0xc0
#define USBLEGSUP_DEFAULT 0x2000 /* only PIRQ enable set */
+#define USBLEGSUP_RWC 0x8f00 /* the R/WC bits */
+#define USBLEGSUP_RO 0x5040 /* R/O and reserved bits */
#define UHCI_NULL_DATA_SIZE 0x7FF /* for UHCI controller TD */
@@ -111,7 +114,6 @@ struct uhci_qh {
/* Software fields */
dma_addr_t dma_handle;
- struct usb_device *dev;
struct urb_priv *urbp;
struct list_head list; /* P: uhci->frame_list_lock */
@@ -203,7 +205,6 @@ struct uhci_td {
/* Software fields */
dma_addr_t dma_handle;
- struct usb_device *dev;
struct urb *urb;
struct list_head list; /* P: urb->lock */
@@ -314,26 +315,32 @@ static inline int __interval_to_skel(int interval)
}
/*
- * Device states for the host controller.
+ * States for the root hub.
*
* To prevent "bouncing" in the presence of electrical noise,
- * we insist on a 1-second "grace" period, before switching to
- * the RUNNING or SUSPENDED states, during which the state is
- * not allowed to change.
- *
- * The resume process is divided into substates in order to avoid
- * potentially length delays during the timer handler.
- *
- * States in which the host controller is halted must have values <= 0.
+ * when there are no devices attached we delay for 1 second in the
+ * RUNNING_NODEVS state before switching to the AUTO_STOPPED state.
+ *
+ * (Note that the AUTO_STOPPED state won't be necessary once the hub
+ * driver learns to autosuspend.)
*/
-enum uhci_state {
- UHCI_RESET,
- UHCI_RUNNING_GRACE, /* Before RUNNING */
- UHCI_RUNNING, /* The normal state */
- UHCI_SUSPENDING_GRACE, /* Before SUSPENDED */
- UHCI_SUSPENDED = -10, /* When no devices are attached */
- UHCI_RESUMING_1,
- UHCI_RESUMING_2
+enum uhci_rh_state {
+ /* In the following states the HC must be halted.
+ * These two must come first */
+ UHCI_RH_RESET,
+ UHCI_RH_SUSPENDED,
+
+ UHCI_RH_AUTO_STOPPED,
+ UHCI_RH_RESUMING,
+
+ /* In this state the HC changes from running to halted,
+ * so it can legally appear either way. */
+ UHCI_RH_SUSPENDING,
+
+ /* In the following states it's an error if the HC is halted.
+ * These two must come last */
+ UHCI_RH_RUNNING, /* The normal state */
+ UHCI_RH_RUNNING_NODEVS, /* Running with no devices attached */
};
/*
@@ -363,15 +370,16 @@ struct uhci_hcd {
int fsbr; /* Full-speed bandwidth reclamation */
unsigned long fsbrtimeout; /* FSBR delay */
- enum uhci_state state; /* FIXME: needs a spinlock */
- unsigned long state_end; /* Time of next transition */
+ enum uhci_rh_state rh_state;
+ unsigned long auto_stop_time; /* When to AUTO_STOP */
+
unsigned int frame_number; /* As of last check */
unsigned int is_stopped;
#define UHCI_IS_STOPPED 9999 /* Larger than a frame # */
unsigned int scan_in_progress:1; /* Schedule scan is running */
unsigned int need_rescan:1; /* Redo the schedule scan */
- unsigned int resume_detect:1; /* Need a Global Resume */
+ unsigned int hc_inaccessible:1; /* HC is suspended or dead */
/* Support for port suspend/resume/reset */
unsigned long port_c_suspend; /* Bit-arrays of ports */
@@ -451,4 +459,11 @@ struct urb_priv {
* #2 urb->lock
*/
+
+/* Some special IDs */
+
+#define PCI_VENDOR_ID_GENESYS 0x17a0
+#define PCI_DEVICE_ID_GL880S_UHCI 0x8083
+#define PCI_DEVICE_ID_GL880S_EHCI 0x8084
+
#endif