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path: root/drivers/usb/host/xhci.h
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Diffstat (limited to 'drivers/usb/host/xhci.h')
-rw-r--r--drivers/usb/host/xhci.h37
1 files changed, 32 insertions, 5 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 4b254b6fa245..877813505ef2 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -652,13 +652,17 @@ struct xhci_virt_ep {
struct xhci_ring *new_ring;
unsigned int ep_state;
#define SET_DEQ_PENDING (1 << 0)
-#define EP_HALTED (1 << 1)
+#define EP_HALTED (1 << 1) /* For stall handling */
+#define EP_HALT_PENDING (1 << 2) /* For URB cancellation */
/* ---- Related to URB cancellation ---- */
struct list_head cancelled_td_list;
- unsigned int cancels_pending;
/* The TRB that was last reported in a stopped endpoint ring */
union xhci_trb *stopped_trb;
struct xhci_td *stopped_td;
+ /* Watchdog timer for stop endpoint command to cancel URBs */
+ struct timer_list stop_cmd_timer;
+ int stop_cmds_pending;
+ struct xhci_hcd *xhci;
};
struct xhci_virt_device {
@@ -673,6 +677,10 @@ struct xhci_virt_device {
struct xhci_container_ctx *out_ctx;
/* Used for addressing devices and configuration changes */
struct xhci_container_ctx *in_ctx;
+ /* Rings saved to ensure old alt settings can be re-instated */
+ struct xhci_ring **ring_cache;
+ int num_rings_cached;
+#define XHCI_MAX_RINGS_CACHED 31
struct xhci_virt_ep eps[31];
struct completion cmd_completion;
/* Status of the last command issued for this device */
@@ -824,9 +832,6 @@ struct xhci_event_cmd {
/* Normal TRB fields */
/* transfer_len bitmasks - bits 0:16 */
#define TRB_LEN(p) ((p) & 0x1ffff)
-/* TD size - number of bytes remaining in the TD (including this TRB):
- * bits 17 - 21. Shift the number of bytes by 10. */
-#define TD_REMAINDER(p) ((((p) >> 10) & 0x1f) << 17)
/* Interrupter Target - which MSI-X vector to target the completion event at */
#define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22)
#define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff)
@@ -1022,6 +1027,8 @@ struct xhci_scratchpad {
#define ERST_ENTRIES 1
/* Poll every 60 seconds */
#define POLL_TIMEOUT 60
+/* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */
+#define XHCI_STOP_EP_CMD_TIMEOUT 5
/* XXX: Make these module parameters */
@@ -1083,6 +1090,21 @@ struct xhci_hcd {
struct timer_list event_ring_timer;
int zombie;
#endif
+ /* Host controller watchdog timer structures */
+ unsigned int xhc_state;
+/* Host controller is dying - not responding to commands. "I'm not dead yet!"
+ *
+ * xHC interrupts have been disabled and a watchdog timer will (or has already)
+ * halt the xHCI host, and complete all URBs with an -ESHUTDOWN code. Any code
+ * that sees this status (other than the timer that set it) should stop touching
+ * hardware immediately. Interrupt handlers should return immediately when
+ * they see this status (any time they drop and re-acquire xhci->lock).
+ * xhci_urb_dequeue() should call usb_hcd_check_unlink_urb() and return without
+ * putting the TD on the canceled list, etc.
+ *
+ * There are no reports of xHCI host controllers that display this issue.
+ */
+#define XHCI_STATE_DYING (1 << 0)
/* Statistics */
int noops_submitted;
int noops_handled;
@@ -1223,6 +1245,7 @@ void xhci_unregister_pci(void);
#endif
/* xHCI host controller glue */
+void xhci_quiesce(struct xhci_hcd *xhci);
int xhci_halt(struct xhci_hcd *xhci);
int xhci_reset(struct xhci_hcd *xhci);
int xhci_init(struct usb_hcd *hcd);
@@ -1246,6 +1269,9 @@ void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
/* xHCI ring, segment, TRB, and TD functions */
dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb);
+struct xhci_segment *trb_in_td(struct xhci_segment *start_seg,
+ union xhci_trb *start_trb, union xhci_trb *end_trb,
+ dma_addr_t suspect_dma);
void xhci_ring_cmd_db(struct xhci_hcd *xhci);
void *xhci_setup_one_noop(struct xhci_hcd *xhci);
void xhci_handle_event(struct xhci_hcd *xhci);
@@ -1278,6 +1304,7 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci,
unsigned int slot_id, unsigned int ep_index,
struct xhci_dequeue_state *deq_state);
+void xhci_stop_endpoint_command_watchdog(unsigned long arg);
/* xHCI roothub code */
int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,