diff options
Diffstat (limited to 'drivers/usb/dwc2/hcd.h')
| -rw-r--r-- | drivers/usb/dwc2/hcd.h | 79 |
1 files changed, 73 insertions, 6 deletions
diff --git a/drivers/usb/dwc2/hcd.h b/drivers/usb/dwc2/hcd.h index fd266ac53a28..140b1511a131 100644 --- a/drivers/usb/dwc2/hcd.h +++ b/drivers/usb/dwc2/hcd.h @@ -212,6 +212,43 @@ enum dwc2_transaction_type { DWC2_TRANSACTION_ALL, }; +/* The number of elements per LS bitmap (per port on multi_tt) */ +#define DWC2_ELEMENTS_PER_LS_BITMAP DIV_ROUND_UP(DWC2_LS_SCHEDULE_SLICES, \ + BITS_PER_LONG) + +/** + * struct dwc2_tt - dwc2 data associated with a usb_tt + * + * @refcount: Number of Queue Heads (QHs) holding a reference. + * @usb_tt: Pointer back to the official usb_tt. + * @periodic_bitmaps: Bitmap for which parts of the 1ms frame are accounted + * for already. Each is DWC2_ELEMENTS_PER_LS_BITMAP + * elements (so sizeof(long) times that in bytes). + * + * This structure is stored in the hcpriv of the official usb_tt. + */ +struct dwc2_tt { + int refcount; + struct usb_tt *usb_tt; + unsigned long periodic_bitmaps[]; +}; + +/** + * struct dwc2_hs_transfer_time - Info about a transfer on the high speed bus. + * + * @start_schedule_usecs: The start time on the main bus schedule. Note that + * the main bus schedule is tightly packed and this + * time should be interpreted as tightly packed (so + * uFrame 0 starts at 0 us, uFrame 1 starts at 100 us + * instead of 125 us). + * @duration_us: How long this transfer goes. + */ + +struct dwc2_hs_transfer_time { + u32 start_schedule_us; + u16 duration_us; +}; + /** * struct dwc2_qh - Software queue head structure * @@ -237,18 +274,33 @@ enum dwc2_transaction_type { * @td_first: Index of first activated isochronous transfer descriptor * @td_last: Index of last activated isochronous transfer descriptor * @host_us: Bandwidth in microseconds per transfer as seen by host + * @device_us: Bandwidth in microseconds per transfer as seen by device * @host_interval: Interval between transfers as seen by the host. If * the host is high speed and the device is low speed this * will be 8 times device interval. - * @next_active_frame: (Micro)frame before we next need to put something on + * @device_interval: Interval between transfers as seen by the device. + * interval. + * @next_active_frame: (Micro)frame _before_ we next need to put something on * the bus. We'll move the qh to active here. If the * host is in high speed mode this will be a uframe. If * the host is in low speed mode this will be a full frame. * @start_active_frame: If we are partway through a split transfer, this will be * what next_active_frame was when we started. Otherwise * it should always be the same as next_active_frame. - * @assigned_uframe: The uframe (0 -7) assigned by dwc2_find_uframe(). - * @frame_usecs: Internal variable used by the microframe scheduler + * @num_hs_transfers: Number of transfers in hs_transfers. + * Normally this is 1 but can be more than one for splits. + * Always >= 1 unless the host is in low/full speed mode. + * @hs_transfers: Transfers that are scheduled as seen by the high speed + * bus. Not used if host is in low or full speed mode (but + * note that it IS USED if the device is low or full speed + * as long as the HOST is in high speed mode). + * @ls_start_schedule_slice: Start time (in slices) on the low speed bus + * schedule that's being used by this device. This + * will be on the periodic_bitmap in a + * "struct dwc2_tt". Not used if this device is high + * speed. Note that this is in "schedule slice" which + * is tightly packed. + * @ls_duration_us: Duration on the low speed bus schedule. * @ntd: Actual number of transfer descriptors in a list * @qtd_list: List of QTDs for this QH * @channel: Host channel currently processing transfers for this QH @@ -261,8 +313,12 @@ enum dwc2_transaction_type { * descriptor and indicates original XferSize value for the * descriptor * @unreserve_timer: Timer for releasing periodic reservation. + * @dwc2_tt: Pointer to our tt info (or NULL if no tt). + * @ttport: Port number within our tt. * @tt_buffer_dirty True if clear_tt_buffer_complete is pending * @unreserve_pending: True if we planned to unreserve but haven't yet. + * @schedule_low_speed: True if we have a low/full speed component (either the + * host is in low/full speed mode or do_split). * * A Queue Head (QH) holds the static characteristics of an endpoint and * maintains a list of transfers (QTDs) for that endpoint. A QH structure may @@ -280,11 +336,14 @@ struct dwc2_qh { u8 td_first; u8 td_last; u16 host_us; + u16 device_us; u16 host_interval; + u16 device_interval; u16 next_active_frame; u16 start_active_frame; - u16 assigned_uframe; - u16 frame_usecs[8]; + s16 num_hs_transfers; + struct dwc2_hs_transfer_time hs_transfers[DWC2_HS_SCHEDULE_UFRAMES]; + u32 ls_start_schedule_slice; u16 ntd; struct list_head qtd_list; struct dwc2_host_chan *channel; @@ -294,8 +353,11 @@ struct dwc2_qh { u32 desc_list_sz; u32 *n_bytes; struct timer_list unreserve_timer; + struct dwc2_tt *dwc_tt; + int ttport; unsigned tt_buffer_dirty:1; unsigned unreserve_pending:1; + unsigned schedule_low_speed:1; }; /** @@ -462,7 +524,6 @@ extern void dwc2_hcd_queue_transactions(struct dwc2_hsotg *hsotg, /* Schedule Queue Functions */ /* Implemented in hcd_queue.c */ -extern void dwc2_hcd_init_usecs(struct dwc2_hsotg *hsotg); extern struct dwc2_qh *dwc2_hcd_qh_create(struct dwc2_hsotg *hsotg, struct dwc2_hcd_urb *urb, gfp_t mem_flags); @@ -728,6 +789,12 @@ extern void dwc2_host_start(struct dwc2_hsotg *hsotg); extern void dwc2_host_disconnect(struct dwc2_hsotg *hsotg); extern void dwc2_host_hub_info(struct dwc2_hsotg *hsotg, void *context, int *hub_addr, int *hub_port); +extern struct dwc2_tt *dwc2_host_get_tt_info(struct dwc2_hsotg *hsotg, + void *context, gfp_t mem_flags, + int *ttport); + +extern void dwc2_host_put_tt_info(struct dwc2_hsotg *hsotg, + struct dwc2_tt *dwc_tt); extern int dwc2_host_get_speed(struct dwc2_hsotg *hsotg, void *context); extern void dwc2_host_complete(struct dwc2_hsotg *hsotg, struct dwc2_qtd *qtd, int status); |