diff options
Diffstat (limited to 'drivers/usb/fotg210/fotg210-hcd.h')
| -rw-r--r-- | drivers/usb/fotg210/fotg210-hcd.h | 688 |
1 files changed, 688 insertions, 0 deletions
diff --git a/drivers/usb/fotg210/fotg210-hcd.h b/drivers/usb/fotg210/fotg210-hcd.h new file mode 100644 index 000000000000..0781442b7a24 --- /dev/null +++ b/drivers/usb/fotg210/fotg210-hcd.h @@ -0,0 +1,688 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_FOTG210_H +#define __LINUX_FOTG210_H + +#include <linux/usb/ehci-dbgp.h> + +/* definitions used for the EHCI driver */ + +/* + * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to + * __leXX (normally) or __beXX (given FOTG210_BIG_ENDIAN_DESC), depending on + * the host controller implementation. + * + * To facilitate the strongest possible byte-order checking from "sparse" + * and so on, we use __leXX unless that's not practical. + */ +#define __hc32 __le32 +#define __hc16 __le16 + +/* statistics can be kept for tuning/monitoring */ +struct fotg210_stats { + /* irq usage */ + unsigned long normal; + unsigned long error; + unsigned long iaa; + unsigned long lost_iaa; + + /* termination of urbs from core */ + unsigned long complete; + unsigned long unlink; +}; + +/* fotg210_hcd->lock guards shared data against other CPUs: + * fotg210_hcd: async, unlink, periodic (and shadow), ... + * usb_host_endpoint: hcpriv + * fotg210_qh: qh_next, qtd_list + * fotg210_qtd: qtd_list + * + * Also, hold this lock when talking to HC registers or + * when updating hw_* fields in shared qh/qtd/... structures. + */ + +#define FOTG210_MAX_ROOT_PORTS 1 /* see HCS_N_PORTS */ + +/* + * fotg210_rh_state values of FOTG210_RH_RUNNING or above mean that the + * controller may be doing DMA. Lower values mean there's no DMA. + */ +enum fotg210_rh_state { + FOTG210_RH_HALTED, + FOTG210_RH_SUSPENDED, + FOTG210_RH_RUNNING, + FOTG210_RH_STOPPING +}; + +/* + * Timer events, ordered by increasing delay length. + * Always update event_delays_ns[] and event_handlers[] (defined in + * ehci-timer.c) in parallel with this list. + */ +enum fotg210_hrtimer_event { + FOTG210_HRTIMER_POLL_ASS, /* Poll for async schedule off */ + FOTG210_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */ + FOTG210_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */ + FOTG210_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */ + FOTG210_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */ + FOTG210_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */ + FOTG210_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */ + FOTG210_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */ + FOTG210_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */ + FOTG210_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */ + FOTG210_HRTIMER_NUM_EVENTS /* Must come last */ +}; +#define FOTG210_HRTIMER_NO_EVENT 99 + +struct fotg210_hcd { /* one per controller */ + /* timing support */ + enum fotg210_hrtimer_event next_hrtimer_event; + unsigned enabled_hrtimer_events; + ktime_t hr_timeouts[FOTG210_HRTIMER_NUM_EVENTS]; + struct hrtimer hrtimer; + + int PSS_poll_count; + int ASS_poll_count; + int died_poll_count; + + /* glue to PCI and HCD framework */ + struct fotg210_caps __iomem *caps; + struct fotg210_regs __iomem *regs; + struct ehci_dbg_port __iomem *debug; + + __u32 hcs_params; /* cached register copy */ + spinlock_t lock; + enum fotg210_rh_state rh_state; + + /* general schedule support */ + bool scanning:1; + bool need_rescan:1; + bool intr_unlinking:1; + bool async_unlinking:1; + bool shutdown:1; + struct fotg210_qh *qh_scan_next; + + /* async schedule support */ + struct fotg210_qh *async; + struct fotg210_qh *dummy; /* For AMD quirk use */ + struct fotg210_qh *async_unlink; + struct fotg210_qh *async_unlink_last; + struct fotg210_qh *async_iaa; + unsigned async_unlink_cycle; + unsigned async_count; /* async activity count */ + + /* 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 fotg210_shadow *pshadow; /* mirror hw periodic table */ + struct fotg210_qh *intr_unlink; + struct fotg210_qh *intr_unlink_last; + unsigned intr_unlink_cycle; + unsigned now_frame; /* frame from HC hardware */ + unsigned next_frame; /* scan periodic, start here */ + unsigned intr_count; /* intr activity count */ + unsigned isoc_count; /* isoc activity count */ + unsigned periodic_count; /* periodic activity count */ + /* max periodic time per uframe */ + unsigned uframe_periodic_max; + + + /* list of itds completed while now_frame was still active */ + struct list_head cached_itd_list; + struct fotg210_itd *last_itd_to_free; + + /* per root hub port */ + unsigned long reset_done[FOTG210_MAX_ROOT_PORTS]; + + /* bit vectors (one bit per port) + * which ports were already suspended at the start of a bus suspend + */ + unsigned long bus_suspended; + + /* which ports are edicated to the companion controller */ + unsigned long companion_ports; + + /* which ports are owned by the companion during a bus suspend */ + unsigned long owned_ports; + + /* which ports have the change-suspend feature turned on */ + unsigned long port_c_suspend; + + /* which ports are suspended */ + unsigned long suspended_ports; + + /* which ports have started to resume */ + unsigned long resuming_ports; + + /* 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 */ + + unsigned random_frame; + unsigned long next_statechange; + ktime_t last_periodic_enable; + u32 command; + + /* SILICON QUIRKS */ + unsigned need_io_watchdog:1; + unsigned fs_i_thresh:1; /* Intel iso scheduling */ + + u8 sbrn; /* packed release number */ + + /* irq statistics */ +#ifdef FOTG210_STATS + struct fotg210_stats stats; +# define INCR(x) ((x)++) +#else +# define INCR(x) do {} while (0) +#endif + + /* silicon clock */ + struct clk *pclk; +}; + +/* convert between an HCD pointer and the corresponding FOTG210_HCD */ +static inline struct fotg210_hcd *hcd_to_fotg210(struct usb_hcd *hcd) +{ + return (struct fotg210_hcd *)(hcd->hcd_priv); +} +static inline struct usb_hcd *fotg210_to_hcd(struct fotg210_hcd *fotg210) +{ + return container_of((void *) fotg210, struct usb_hcd, hcd_priv); +} + +/*-------------------------------------------------------------------------*/ + +/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */ + +/* Section 2.2 Host Controller Capability Registers */ +struct fotg210_caps { + /* these fields are specified as 8 and 16 bit registers, + * but some hosts can't perform 8 or 16 bit PCI accesses. + * some hosts treat caplength and hciversion as parts of a 32-bit + * register, others treat them as two separate registers, this + * affects the memory map for big endian controllers. + */ + u32 hc_capbase; +#define HC_LENGTH(fotg210, p) (0x00ff&((p) >> /* bits 7:0 / offset 00h */ \ + (fotg210_big_endian_capbase(fotg210) ? 24 : 0))) +#define HC_VERSION(fotg210, p) (0xffff&((p) >> /* bits 31:16 / offset 02h */ \ + (fotg210_big_endian_capbase(fotg210) ? 0 : 16))) + u32 hcs_params; /* HCSPARAMS - offset 0x4 */ +#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ + + u32 hcc_params; /* HCCPARAMS - offset 0x8 */ +#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */ +#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/ + u8 portroute[8]; /* nibbles for routing - offset 0xC */ +}; + + +/* Section 2.3 Host Controller Operational Registers */ +struct fotg210_regs { + + /* USBCMD: offset 0x00 */ + u32 command; + +/* EHCI 1.1 addendum */ +/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */ +#define CMD_PARK (1<<11) /* enable "park" on async qh */ +#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */ +#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */ +#define CMD_ASE (1<<5) /* async schedule enable */ +#define CMD_PSE (1<<4) /* periodic schedule enable */ +/* 3:2 is periodic frame list size */ +#define CMD_RESET (1<<1) /* reset HC not bus */ +#define CMD_RUN (1<<0) /* start/stop HC */ + + /* USBSTS: offset 0x04 */ + u32 status; +#define STS_ASS (1<<15) /* Async Schedule Status */ +#define STS_PSS (1<<14) /* Periodic Schedule Status */ +#define STS_RECL (1<<13) /* Reclamation */ +#define STS_HALT (1<<12) /* Not running (any reason) */ +/* some bits reserved */ + /* these STS_* flags are also intr_enable bits (USBINTR) */ +#define STS_IAA (1<<5) /* Interrupted on async advance */ +#define STS_FATAL (1<<4) /* such as some PCI access errors */ +#define STS_FLR (1<<3) /* frame list rolled over */ +#define STS_PCD (1<<2) /* port change detect */ +#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */ +#define STS_INT (1<<0) /* "normal" completion (short, ...) */ + + /* USBINTR: offset 0x08 */ + u32 intr_enable; + + /* FRINDEX: offset 0x0C */ + u32 frame_index; /* current microframe number */ + /* CTRLDSSEGMENT: offset 0x10 */ + u32 segment; /* address bits 63:32 if needed */ + /* PERIODICLISTBASE: offset 0x14 */ + u32 frame_list; /* points to periodic list */ + /* ASYNCLISTADDR: offset 0x18 */ + u32 async_next; /* address of next async queue head */ + + u32 reserved1; + /* PORTSC: offset 0x20 */ + u32 port_status; +/* 31:23 reserved */ +#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */ +#define PORT_RESET (1<<8) /* reset port */ +#define PORT_SUSPEND (1<<7) /* suspend port */ +#define PORT_RESUME (1<<6) /* resume it */ +#define PORT_PEC (1<<3) /* port enable change */ +#define PORT_PE (1<<2) /* port enable */ +#define PORT_CSC (1<<1) /* connect status change */ +#define PORT_CONNECT (1<<0) /* device connected */ +#define PORT_RWC_BITS (PORT_CSC | PORT_PEC) + u32 reserved2[19]; + + /* OTGCSR: offet 0x70 */ + u32 otgcsr; +#define OTGCSR_HOST_SPD_TYP (3 << 22) +#define OTGCSR_A_BUS_DROP (1 << 5) +#define OTGCSR_A_BUS_REQ (1 << 4) + + /* OTGISR: offset 0x74 */ + u32 otgisr; +#define OTGISR_OVC (1 << 10) + + u32 reserved3[15]; + + /* GMIR: offset 0xB4 */ + u32 gmir; +#define GMIR_INT_POLARITY (1 << 3) /*Active High*/ +#define GMIR_MHC_INT (1 << 2) +#define GMIR_MOTG_INT (1 << 1) +#define GMIR_MDEV_INT (1 << 0) +}; + +/*-------------------------------------------------------------------------*/ + +#define QTD_NEXT(fotg210, dma) cpu_to_hc32(fotg210, (u32)dma) + +/* + * EHCI Specification 0.95 Section 3.5 + * QTD: describe data transfer components (buffer, direction, ...) + * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram". + * + * These are associated only with "QH" (Queue Head) structures, + * used with control, bulk, and interrupt transfers. + */ +struct fotg210_qtd { + /* first part defined by EHCI spec */ + __hc32 hw_next; /* see EHCI 3.5.1 */ + __hc32 hw_alt_next; /* see EHCI 3.5.2 */ + __hc32 hw_token; /* see EHCI 3.5.3 */ +#define QTD_TOGGLE (1 << 31) /* data toggle */ +#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff) +#define QTD_IOC (1 << 15) /* interrupt on complete */ +#define QTD_CERR(tok) (((tok)>>10) & 0x3) +#define QTD_PID(tok) (((tok)>>8) & 0x3) +#define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */ +#define QTD_STS_HALT (1 << 6) /* halted on error */ +#define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */ +#define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */ +#define QTD_STS_XACT (1 << 3) /* device gave illegal response */ +#define QTD_STS_MMF (1 << 2) /* incomplete split transaction */ +#define QTD_STS_STS (1 << 1) /* split transaction state */ +#define QTD_STS_PING (1 << 0) /* issue PING? */ + +#define ACTIVE_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_ACTIVE) +#define HALT_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_HALT) +#define STATUS_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_STS) + + __hc32 hw_buf[5]; /* see EHCI 3.5.4 */ + __hc32 hw_buf_hi[5]; /* Appendix B */ + + /* the rest is HCD-private */ + dma_addr_t qtd_dma; /* qtd address */ + struct list_head qtd_list; /* sw qtd list */ + struct urb *urb; /* qtd's urb */ + size_t length; /* length of buffer */ +} __aligned(32); + +/* mask NakCnt+T in qh->hw_alt_next */ +#define QTD_MASK(fotg210) cpu_to_hc32(fotg210, ~0x1f) + +#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1) + +/*-------------------------------------------------------------------------*/ + +/* type tag from {qh,itd,fstn}->hw_next */ +#define Q_NEXT_TYPE(fotg210, dma) ((dma) & cpu_to_hc32(fotg210, 3 << 1)) + +/* + * Now the following defines are not converted using the + * cpu_to_le32() macro anymore, since we have to support + * "dynamic" switching between be and le support, so that the driver + * can be used on one system with SoC EHCI controller using big-endian + * descriptors as well as a normal little-endian PCI EHCI controller. + */ +/* values for that type tag */ +#define Q_TYPE_ITD (0 << 1) +#define Q_TYPE_QH (1 << 1) +#define Q_TYPE_SITD (2 << 1) +#define Q_TYPE_FSTN (3 << 1) + +/* next async queue entry, or pointer to interrupt/periodic QH */ +#define QH_NEXT(fotg210, dma) \ + (cpu_to_hc32(fotg210, (((u32)dma)&~0x01f)|Q_TYPE_QH)) + +/* for periodic/async schedules and qtd lists, mark end of list */ +#define FOTG210_LIST_END(fotg210) \ + cpu_to_hc32(fotg210, 1) /* "null pointer" to hw */ + +/* + * Entries in periodic shadow table are pointers to one of four kinds + * of data structure. That's dictated by the hardware; a type tag is + * encoded in the low bits of the hardware's periodic schedule. Use + * Q_NEXT_TYPE to get the tag. + * + * For entries in the async schedule, the type tag always says "qh". + */ +union fotg210_shadow { + struct fotg210_qh *qh; /* Q_TYPE_QH */ + struct fotg210_itd *itd; /* Q_TYPE_ITD */ + struct fotg210_fstn *fstn; /* Q_TYPE_FSTN */ + __hc32 *hw_next; /* (all types) */ + void *ptr; +}; + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.95 Section 3.6 + * QH: describes control/bulk/interrupt endpoints + * See Fig 3-7 "Queue Head Structure Layout". + * + * These appear in both the async and (for interrupt) periodic schedules. + */ + +/* first part defined by EHCI spec */ +struct fotg210_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 fotg210_qtd) */ + __hc32 hw_qtd_next; + __hc32 hw_alt_next; + __hc32 hw_token; + __hc32 hw_buf[5]; + __hc32 hw_buf_hi[5]; +} __aligned(32); + +struct fotg210_qh { + struct fotg210_qh_hw *hw; /* Must come first */ + /* the rest is HCD-private */ + dma_addr_t qh_dma; /* address of qh */ + union fotg210_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 fotg210_qtd *dummy; + struct fotg210_qh *unlink_next; /* next on unlink list */ + + unsigned unlink_cycle; + + u8 needs_rescan; /* Dequeue during giveback */ + 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 xacterrs; /* XactErr retry counter */ +#define QH_XACTERR_MAX 32 /* XactErr retry limit */ + + /* periodic schedule info */ + u8 usecs; /* intr bandwidth */ + u8 gap_uf; /* uframes split/csplit gap */ + u8 c_usecs; /* ... split completion bw */ + u16 tt_usecs; /* tt downstream bandwidth */ + unsigned short period; /* polling interval */ + unsigned short start; /* where polling starts */ +#define NO_FRAME ((unsigned short)~0) /* pick new start */ + + struct usb_device *dev; /* access to TT */ + unsigned is_out:1; /* bulk or intr OUT */ + unsigned clearing_tt:1; /* Clear-TT-Buf in progress */ +}; + +/*-------------------------------------------------------------------------*/ + +/* description of one iso transaction (up to 3 KB data if highspeed) */ +struct fotg210_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) + * each packet is one logical usb transaction to the device (not TT), + * beginning at stream->next_uframe + */ +struct fotg210_iso_sched { + struct list_head td_list; + unsigned span; + struct fotg210_iso_packet packet[]; +}; + +/* + * fotg210_iso_stream - groups all (s)itds for this endpoint. + * acts like a qh would, if EHCI had them for ISO. + */ +struct fotg210_iso_stream { + /* first field matches fotg210_hq, but is NULL */ + struct fotg210_qh_hw *hw; + + u8 bEndpointAddress; + u8 highspeed; + struct list_head td_list; /* queued itds */ + struct list_head free_list; /* list of unused itds */ + struct usb_device *udev; + struct usb_host_endpoint *ep; + + /* output of (re)scheduling */ + int next_uframe; + __hc32 splits; + + /* the rest is derived from the endpoint descriptor, + * trusting urb->interval == f(epdesc->bInterval) and + * including the extra info for hw_bufp[0..2] + */ + u8 usecs, c_usecs; + u16 interval; + u16 tt_usecs; + u16 maxp; + u16 raw_mask; + 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; +}; + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.95 Section 3.3 + * Fig 3-4 "Isochronous Transaction Descriptor (iTD)" + * + * Schedule records for high speed iso xfers + */ +struct fotg210_itd { + /* first part defined by EHCI spec */ + __hc32 hw_next; /* see EHCI 3.3.1 */ + __hc32 hw_transaction[8]; /* see EHCI 3.3.2 */ +#define FOTG210_ISOC_ACTIVE (1<<31) /* activate transfer this slot */ +#define FOTG210_ISOC_BUF_ERR (1<<30) /* Data buffer error */ +#define FOTG210_ISOC_BABBLE (1<<29) /* babble detected */ +#define FOTG210_ISOC_XACTERR (1<<28) /* XactErr - transaction error */ +#define FOTG210_ITD_LENGTH(tok) (((tok)>>16) & 0x0fff) +#define FOTG210_ITD_IOC (1 << 15) /* interrupt on complete */ + +#define ITD_ACTIVE(fotg210) cpu_to_hc32(fotg210, FOTG210_ISOC_ACTIVE) + + __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 fotg210_shadow itd_next; /* ptr to periodic q entry */ + + struct urb *urb; + struct fotg210_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); + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI Specification 0.96 Section 3.7 + * Periodic Frame Span Traversal Node (FSTN) + * + * Manages split interrupt transactions (using TT) that span frame boundaries + * into uframes 0/1; see 4.12.2.2. In those uframes, a "save place" FSTN + * makes the HC jump (back) to a QH to scan for fs/ls QH completions until + * it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work. + */ +struct fotg210_fstn { + __hc32 hw_next; /* any periodic q entry */ + __hc32 hw_prev; /* qh or FOTG210_LIST_END */ + + /* the rest is HCD-private */ + dma_addr_t fstn_dma; + union fotg210_shadow fstn_next; /* ptr to periodic q entry */ +} __aligned(32); + +/*-------------------------------------------------------------------------*/ + +/* Prepare the PORTSC wakeup flags during controller suspend/resume */ + +#define fotg210_prepare_ports_for_controller_suspend(fotg210, do_wakeup) \ + fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup) + +#define fotg210_prepare_ports_for_controller_resume(fotg210) \ + fotg210_adjust_port_wakeup_flags(fotg210, false, false) + +/*-------------------------------------------------------------------------*/ + +/* + * Some EHCI controllers have a Transaction Translator built into the + * root hub. This is a non-standard feature. Each controller will need + * to add code to the following inline functions, and call them as + * needed (mostly in root hub code). + */ + +static inline unsigned int +fotg210_get_speed(struct fotg210_hcd *fotg210, unsigned int portsc) +{ + return (readl(&fotg210->regs->otgcsr) + & OTGCSR_HOST_SPD_TYP) >> 22; +} + +/* Returns the speed of a device attached to a port on the root hub. */ +static inline unsigned int +fotg210_port_speed(struct fotg210_hcd *fotg210, unsigned int portsc) +{ + switch (fotg210_get_speed(fotg210, portsc)) { + case 0: + return 0; + case 1: + return USB_PORT_STAT_LOW_SPEED; + case 2: + default: + return USB_PORT_STAT_HIGH_SPEED; + } +} + +/*-------------------------------------------------------------------------*/ + +#define fotg210_has_fsl_portno_bug(e) (0) + +/* + * While most USB host controllers implement their registers in + * little-endian format, a minority (celleb companion chip) implement + * them in big endian format. + * + * This attempts to support either format at compile time without a + * runtime penalty, or both formats with the additional overhead + * of checking a flag bit. + * + */ + +#define fotg210_big_endian_mmio(e) 0 +#define fotg210_big_endian_capbase(e) 0 + +static inline unsigned int fotg210_readl(const struct fotg210_hcd *fotg210, + __u32 __iomem *regs) +{ + return readl(regs); +} + +static inline void fotg210_writel(const struct fotg210_hcd *fotg210, + const unsigned int val, __u32 __iomem *regs) +{ + writel(val, regs); +} + +/* cpu to fotg210 */ +static inline __hc32 cpu_to_hc32(const struct fotg210_hcd *fotg210, const u32 x) +{ + return cpu_to_le32(x); +} + +/* fotg210 to cpu */ +static inline u32 hc32_to_cpu(const struct fotg210_hcd *fotg210, const __hc32 x) +{ + return le32_to_cpu(x); +} + +static inline u32 hc32_to_cpup(const struct fotg210_hcd *fotg210, + const __hc32 *x) +{ + return le32_to_cpup(x); +} + +/*-------------------------------------------------------------------------*/ + +static inline unsigned fotg210_read_frame_index(struct fotg210_hcd *fotg210) +{ + return fotg210_readl(fotg210, &fotg210->regs->frame_index); +} + +/*-------------------------------------------------------------------------*/ + +#endif /* __LINUX_FOTG210_H */ |