diff options
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 48 |
1 files changed, 42 insertions, 6 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 4b254b6fa245..e5eb09b2f38e 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; @@ -1188,6 +1210,8 @@ void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst); void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci); void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep); +char *xhci_get_slot_state(struct xhci_hcd *xhci, + struct xhci_container_ctx *ctx); /* xHCI memory management */ void xhci_mem_cleanup(struct xhci_hcd *xhci); @@ -1211,8 +1235,12 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *udev, struct usb_host_endpoint *ep, gfp_t mem_flags); void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); +void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + unsigned int ep_index); struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, - bool allocate_completion, gfp_t mem_flags); + bool allocate_in_ctx, bool allocate_completion, + gfp_t mem_flags); void xhci_free_command(struct xhci_hcd *xhci, struct xhci_command *command); @@ -1223,6 +1251,7 @@ 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); @@ -1241,11 +1270,16 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep); +int xhci_reset_device(struct usb_hcd *hcd, struct usb_device *udev); int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); 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); +int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code); 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); @@ -1267,6 +1301,7 @@ int xhci_queue_evaluate_context(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, u32 slot_id); int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id, unsigned int ep_index); +int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id); void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, struct xhci_td *cur_td, struct xhci_dequeue_state *state); @@ -1278,6 +1313,7 @@ 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, |