#define CAN_SCHEDULE_FRAMES 1000 /* how far in the future frames
* can be scheduled */
+/* When no queues need Full-Speed Bandwidth Reclamation,
+ * delay this long before turning FSBR off */
+#define FSBR_OFF_DELAY msecs_to_jiffies(10)
+
+/* If a queue hasn't advanced after this much time, assume it is stuck */
+#define QH_WAIT_TIMEOUT msecs_to_jiffies(200)
+
/*
* Queue Headers
__le32 element; /* Queue element (TD) pointer */
/* Software fields */
- dma_addr_t dma_handle;
-
struct list_head node; /* Node in the list of QHs */
struct usb_host_endpoint *hep; /* Endpoint information */
struct usb_device *udev;
struct list_head queue; /* Queue of urbps for this QH */
struct uhci_qh *skel; /* Skeleton for this QH */
struct uhci_td *dummy_td; /* Dummy TD to end the queue */
+ struct uhci_td *post_td; /* Last TD completed */
+ struct usb_iso_packet_descriptor *iso_packet_desc;
+ /* Next urb->iso_frame_desc entry */
+ unsigned long advance_jiffies; /* Time of last queue advance */
unsigned int unlink_frame; /* When the QH was unlinked */
+ unsigned int period; /* For Interrupt and Isochronous QHs */
+ unsigned int iso_frame; /* Frame # for iso_packet_desc */
+ int iso_status; /* Status for Isochronous URBs */
+
int state; /* QH_STATE_xxx; see above */
+ int type; /* Queue type (control, bulk, etc) */
+
+ dma_addr_t dma_handle;
unsigned int initial_toggle:1; /* Endpoint's current toggle value */
unsigned int needs_fixup:1; /* Must fix the TD toggle values */
- unsigned int is_stopped:1; /* Queue was stopped by an error */
+ unsigned int is_stopped:1; /* Queue was stopped by error/unlink */
+ unsigned int wait_expired:1; /* QH_WAIT_TIMEOUT has expired */
} __attribute__((aligned(16)));
/*
dma_addr_t dma_handle;
struct list_head list;
- struct list_head remove_list;
int frame; /* for iso: what frame? */
struct list_head fl_list;
#define skel_bulk_qh skelqh[12]
#define skel_term_qh skelqh[13]
-/*
- * Search tree for determining where <interval> fits in the skelqh[]
- * skeleton.
- *
- * An interrupt request should be placed into the slowest skelqh[]
- * which meets the interval/period/frequency requirement.
- * An interrupt request is allowed to be faster than <interval> but not slower.
- *
- * For a given <interval>, this function returns the appropriate/matching
- * skelqh[] index value.
- */
-static inline int __interval_to_skel(int interval)
-{
- if (interval < 16) {
- if (interval < 4) {
- if (interval < 2)
- return 9; /* int1 for 0-1 ms */
- return 8; /* int2 for 2-3 ms */
- }
- if (interval < 8)
- return 7; /* int4 for 4-7 ms */
- return 6; /* int8 for 8-15 ms */
- }
- if (interval < 64) {
- if (interval < 32)
- return 5; /* int16 for 16-31 ms */
- return 4; /* int32 for 32-63 ms */
- }
- if (interval < 128)
- return 3; /* int64 for 64-127 ms */
- return 2; /* int128 for 128-255 ms (Max.) */
-}
+/* Find the skelqh entry corresponding to an interval exponent */
+#define UHCI_SKEL_INDEX(exponent) (9 - exponent)
/*
__le32 *frame;
void **frame_cpu; /* CPU's frame list */
- int fsbr; /* Full-speed bandwidth reclamation */
- unsigned long fsbrtimeout; /* FSBR delay */
-
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 last_iso_frame; /* Frame of last scan */
+ unsigned int cur_iso_frame; /* Frame for current scan */
unsigned int scan_in_progress:1; /* Schedule scan is running */
unsigned int need_rescan:1; /* Redo the schedule scan */
- unsigned int hc_inaccessible:1; /* HC is suspended or dead */
+ unsigned int dead:1; /* Controller has died */
unsigned int working_RD:1; /* Suspended root hub doesn't
need to be polled */
unsigned int is_initialized:1; /* Data structure is usable */
+ unsigned int fsbr_is_on:1; /* FSBR is turned on */
+ unsigned int fsbr_is_wanted:1; /* Does any URB want FSBR? */
+ unsigned int fsbr_expiring:1; /* FSBR is timing out */
+
+ struct timer_list fsbr_timer; /* For turning off FBSR */
/* Support for port suspend/resume/reset */
unsigned long port_c_suspend; /* Bit-arrays of ports */
unsigned long resuming_ports;
unsigned long ports_timeout; /* Time to stop signalling */
- /* List of TDs that are done, but waiting to be freed (race) */
- struct list_head td_remove_list;
- unsigned int td_remove_age; /* Age in frames */
-
struct list_head idle_qh_list; /* Where the idle QHs live */
int rh_numports; /* Number of root-hub ports */
#define uhci_dev(u) (uhci_to_hcd(u)->self.controller)
+/* Utility macro for comparing frame numbers */
+#define uhci_frame_before_eq(f1, f2) (0 <= (int) ((f2) - (f1)))
+
/*
* Private per-URB data
struct uhci_qh *qh; /* QH for this URB */
struct list_head td_list;
- unsigned fsbr : 1; /* URB turned on FSBR */
- unsigned short_transfer : 1; /* URB got a short transfer, no
- * need to rescan */
+ unsigned fsbr:1; /* URB wants FSBR */
};
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