/* termination of urbs from core */ unsignedlong complete; unsignedlong unlink;
};
/* *Schedulingandbudgetinginformationforperiodictransfers,forboth *high-speeddevicesandfull/low-speeddeviceslyingbehindaTT.
*/ struct ehci_per_sched { struct usb_device *udev; /* access to the TT */ struct usb_host_endpoint *ep; struct list_head ps_list; /* node on ehci_tt's ps_list */
u16 tt_usecs; /* time on the FS/LS bus */
u16 cs_mask; /* C-mask and S-mask bytes */
u16 period; /* actual period in frames */
u16 phase; /* actual phase, frame part */
u8 bw_phase; /* same, for bandwidth
reservation */
u8 phase_uf; /* uframe part of the phase */
u8 usecs, c_usecs; /* times on the HS bus */
u8 bw_uperiod; /* period in microframes, for
bandwidth reservation */
u8 bw_period; /* same, in frames */
}; #define NO_FRAME 29999/* frame not assigned yet */
/* ehci_hcd->lock guards shared data against other CPUs: *ehci_hcd:async,unlink,periodic(andshadow),... *usb_host_endpoint:hcpriv *ehci_qh:qh_next,qtd_list *ehci_qtd:qtd_list * *Also,holdthislockwhentalkingtoHCregistersor *whenupdatinghw_*fieldsinsharedqh/qtd/...structures.
*/
#define EHCI_MAX_ROOT_PORTS 15/* see HCS_N_PORTS */
/* general schedule support */ bool scanning:1; bool need_rescan:1; bool intr_unlinking:1; bool iaa_in_progress:1; bool async_unlinking:1; bool shutdown:1; struct ehci_qh *qh_scan_next;
/* async schedule support */ struct ehci_qh *async; struct ehci_qh *dummy; /* For AMD quirk use */ struct list_head async_unlink; struct list_head async_idle; unsigned async_unlink_cycle; unsigned async_count; /* async activity count */
__hc32 old_current; /* Test for QH becoming */
__hc32 old_token; /* inactive during unlink */
/* periodic schedule support */ #define DEFAULT_I_TDPS 1024/* some HCs can do less */ unsigned periodic_size;
__hc32 *periodic; /* hw periodic table */
dma_addr_t periodic_dma; struct list_head intr_qh_list; unsigned i_thresh; /* uframes HC might cache */
union ehci_shadow *pshadow; /* mirror hw periodic table */ struct list_head intr_unlink_wait; struct list_head intr_unlink; unsigned intr_unlink_wait_cycle; unsigned intr_unlink_cycle; unsigned now_frame; /* frame from HC hardware */ unsigned last_iso_frame; /* last frame scanned for iso */ unsigned intr_count; /* intr activity count */ unsigned isoc_count; /* isoc activity count */ unsigned periodic_count; /* periodic activity count */ unsigned uframe_periodic_max; /* max periodic time per uframe */
/* list of itds & sitds completed while now_frame was still active */ struct list_head cached_itd_list; struct ehci_itd *last_itd_to_free; struct list_head cached_sitd_list; struct ehci_sitd *last_sitd_to_free;
/* per root hub port */ unsignedlong reset_done[EHCI_MAX_ROOT_PORTS];
/* bit vectors (one bit per port) */ unsignedlong bus_suspended; /* which ports were
already suspended at the start of a bus suspend */ unsignedlong companion_ports; /* which ports are
dedicated to the companion controller */ unsignedlong owned_ports; /* which ports are
owned by the companion during a bus suspend */ unsignedlong port_c_suspend; /* which ports have
the change-suspend feature turned on */ unsignedlong suspended_ports; /* which ports are
suspended */ unsignedlong resuming_ports; /* which ports have
started to resume */
/* per-HC memory pools (could be per-bus, but ...) */ struct dma_pool *qh_pool; /* qh per active urb */ struct dma_pool *qtd_pool; /* one or more per qh */ struct dma_pool *itd_pool; /* itd per iso urb */ struct dma_pool *sitd_pool; /* sitd per split iso urb */
/* first part defined by EHCI spec */ struct ehci_qh_hw {
__hc32 hw_next; /* see EHCI 3.6.1 */
__hc32 hw_info1; /* see EHCI 3.6.2 */ #define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */ #define QH_HEAD (1 << 15) /* Head of async reclamation list */ #define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */ #define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */ #define QH_LOW_SPEED (1 << 12) #define QH_FULL_SPEED (0 << 12) #define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */
__hc32 hw_info2; /* see EHCI 3.6.2 */ #define QH_SMASK 0x000000ff #define QH_CMASK 0x0000ff00 #define QH_HUBADDR 0x007f0000 #define QH_HUBPORT 0x3f800000 #define QH_MULT 0xc0000000
__hc32 hw_current; /* qtd list - see EHCI 3.6.4 */
/* qtd overlay (hardware parts of a struct ehci_qtd) */
__hc32 hw_qtd_next;
__hc32 hw_alt_next;
__hc32 hw_token;
__hc32 hw_buf[5];
__hc32 hw_buf_hi[5];
} __aligned(32);
struct ehci_qh { struct ehci_qh_hw *hw; /* Must come first */ /* the rest is HCD-private */
dma_addr_t qh_dma; /* address of qh */ union ehci_shadow qh_next; /* ptr to qh; or periodic */ struct list_head qtd_list; /* sw qtd list */ struct list_head intr_node; /* list of intr QHs */ struct ehci_qtd *dummy; struct list_head unlink_node; struct ehci_per_sched ps; /* scheduling info */
unsigned unlink_cycle;
u8 qh_state; #define QH_STATE_LINKED 1/* HC sees this */ #define QH_STATE_UNLINK 2/* HC may still see this */ #define QH_STATE_IDLE 3/* HC doesn't see this */ #define QH_STATE_UNLINK_WAIT 4/* LINKED and on unlink q */ #define QH_STATE_COMPLETING 5/* don't touch token.HALT */
u8 unlink_reason; #define QH_UNLINK_HALTED 0x01 /* Halt flag is set */ #define QH_UNLINK_SHORT_READ 0x02 /* Recover from a short read */ #define QH_UNLINK_DUMMY_OVERLAY 0x04 /* QH overlayed the dummy TD */ #define QH_UNLINK_SHUTDOWN 0x08 /* The HC isn't running */ #define QH_UNLINK_QUEUE_EMPTY 0x10 /* Reached end of the queue */ #define QH_UNLINK_REQUESTED 0x20 /* Disable, reset, or dequeue */
u8 gap_uf; /* uframes split/csplit gap */
unsigned is_out:1; /* bulk or intr OUT */ unsigned clearing_tt:1; /* Clear-TT-Buf in progress */ unsigned dequeue_during_giveback:1; unsigned should_be_inactive:1;
};
/* description of one iso transaction (up to 3 KB data if highspeed) */ struct ehci_iso_packet { /* These will be copied to iTD when scheduling */
u64 bufp; /* itd->hw_bufp{,_hi}[pg] |= */
__hc32 transaction; /* itd->hw_transaction[i] |= */
u8 cross; /* buf crosses pages */ /* for full speed OUT splits */
u32 buf1;
};
/* temporary schedule data for packets from iso urbs (both speeds) *eachpacketisonelogicalusbtransactiontothedevice(notTT), *beginningatstream->next_uframe
*/ struct ehci_iso_sched { struct list_head td_list; unsigned span; unsigned first_packet; struct ehci_iso_packet packet[];
};
/* *ehci_iso_stream-groupsall(s)itdsforthisendpoint. *actslikeaqhwould,ifEHCIhadthemforISO.
*/ struct ehci_iso_stream { /* first field matches ehci_qh, but is NULL */ struct ehci_qh_hw *hw;
u8 bEndpointAddress;
u8 highspeed; struct list_head td_list; /* queued itds/sitds */ struct list_head free_list; /* list of unused itds/sitds */
/* output of (re)scheduling */ struct ehci_per_sched ps; /* scheduling info */ unsigned next_uframe;
__hc32 splits;
/* the rest is derived from the endpoint descriptor, *includingtheextrainfoforhw_bufp[0..2]
*/
u16 uperiod; /* period in uframes */
u16 maxp; unsigned bandwidth;
/* This is used to initialize iTD's hw_bufp fields */
__hc32 buf0;
__hc32 buf1;
__hc32 buf2;
/* this is used to initialize sITD's tt info */
__hc32 address;
};
__hc32 hw_bufp[7]; /* see EHCI 3.3.3 */
__hc32 hw_bufp_hi[7]; /* Appendix B */
/* the rest is HCD-private */
dma_addr_t itd_dma; /* for this itd */ union ehci_shadow itd_next; /* ptr to periodic q entry */
struct urb *urb; struct ehci_iso_stream *stream; /* endpoint's queue */ struct list_head itd_list; /* list of stream's itds */
/* any/all hw_transactions here may be used by that urb */ unsigned frame; /* where scheduled */ unsigned pg; unsigned index[8]; /* in urb->iso_frame_desc */
} __aligned(32);
struct list_head tt_list; /* List of all ehci_tt's */ struct list_head ps_list; /* Items using this TT */ struct usb_tt *usb_tt; int tt_port; /* TT port number */
};
#ifdef CONFIG_PPC_83xx /* Some Freescale processors have an erratum in which the TT *portnumberinthequeueheadwas0..N-1insteadof1..N.
*/ #define ehci_has_fsl_portno_bug(e) ((e)->has_fsl_port_bug) #else #define ehci_has_fsl_portno_bug(e) (0) #endif
#define PORTSC_FSL_PFSC 24/* Port Force Full-Speed Connect */
#ifdefined(CONFIG_PPC_85xx) /* Some Freescale processors have an erratum (USB A-005275) in which *incomingpacketsgetcorruptedinHSmode
*/ #define ehci_has_fsl_hs_errata(e) ((e)->has_fsl_hs_errata) #else #define ehci_has_fsl_hs_errata(e) (0) #endif
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