/* $FreeBSD: head/sys/dev/usb/controller/uhci.c 278883 2015-02-17 07:52:50Z hselasky $ */ /*- * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved. * Copyright (c) 1998 Lennart Augustsson. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * USB Universal Host Controller driver. * Handles e.g. PIIX3 and PIIX4. * * UHCI spec: http://developer.intel.com/design/USB/UHCI11D.htm * USB spec: http://www.usb.org/developers/docs/usbspec.zip * PIIXn spec: ftp://download.intel.com/design/intarch/datashts/29055002.pdf * ftp://download.intel.com/design/intarch/datashts/29056201.pdf */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define USB_DEBUG_VAR uhcidebug #include #include #include #include #include #include #include #include #include #include #include #include #define alt_next next #define UHCI_BUS2SC(bus) \ ((uhci_softc_t *)(((uint8_t *)(bus)) - \ ((uint8_t *)&(((uhci_softc_t *)0)->sc_bus)))) #ifdef USB_DEBUG static int uhcidebug = 0; static int uhcinoloop = 0; static SYSCTL_NODE(_hw_usb, OID_AUTO, uhci, CTLFLAG_RW, 0, "USB uhci"); SYSCTL_INT(_hw_usb_uhci, OID_AUTO, debug, CTLFLAG_RW, &uhcidebug, 0, "uhci debug level"); SYSCTL_INT(_hw_usb_uhci, OID_AUTO, loop, CTLFLAG_RW, &uhcinoloop, 0, "uhci noloop"); TUNABLE_INT("hw.usb.uhci.debug", &uhcidebug); TUNABLE_INT("hw.usb.uhci.loop", &uhcinoloop); static void uhci_dumpregs(uhci_softc_t *sc); static void uhci_dump_tds(uhci_td_t *td); #endif #define UBARR(sc) bus_space_barrier((sc)->sc_io_tag, (sc)->sc_io_hdl, 0, (sc)->sc_io_size, \ BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE) #define UWRITE1(sc, r, x) \ do { UBARR(sc); bus_space_write_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (r), (x)); \ } while (/*CONSTCOND*/0) #define UWRITE2(sc, r, x) \ do { UBARR(sc); bus_space_write_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (r), (x)); \ } while (/*CONSTCOND*/0) #define UWRITE4(sc, r, x) \ do { UBARR(sc); bus_space_write_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (r), (x)); \ } while (/*CONSTCOND*/0) #define UREAD1(sc, r) (UBARR(sc), bus_space_read_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (r))) #define UREAD2(sc, r) (UBARR(sc), bus_space_read_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (r))) #define UREAD4(sc, r) (UBARR(sc), bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (r))) #define UHCICMD(sc, cmd) UWRITE2(sc, UHCI_CMD, cmd) #define UHCISTS(sc) UREAD2(sc, UHCI_STS) #define UHCI_RESET_TIMEOUT 100 /* ms, reset timeout */ #define UHCI_INTR_ENDPT 1 struct uhci_mem_layout { struct usb_page_search buf_res; struct usb_page_search fix_res; struct usb_page_cache *buf_pc; struct usb_page_cache *fix_pc; uint32_t buf_offset; uint16_t max_frame_size; }; struct uhci_std_temp { struct uhci_mem_layout ml; uhci_td_t *td; uhci_td_t *td_next; uint32_t average; uint32_t td_status; uint32_t td_token; uint32_t len; uint16_t max_frame_size; uint8_t shortpkt; uint8_t setup_alt_next; uint8_t last_frame; }; static const struct usb_bus_methods uhci_bus_methods; static const struct usb_pipe_methods uhci_device_bulk_methods; static const struct usb_pipe_methods uhci_device_ctrl_methods; static const struct usb_pipe_methods uhci_device_intr_methods; static const struct usb_pipe_methods uhci_device_isoc_methods; static uint8_t uhci_restart(uhci_softc_t *sc); static void uhci_do_poll(struct usb_bus *); static void uhci_device_done(struct usb_xfer *, usb_error_t); static void uhci_transfer_intr_enqueue(struct usb_xfer *); static void uhci_timeout(void *); static uint8_t uhci_check_transfer(struct usb_xfer *); static void uhci_root_intr(uhci_softc_t *sc); void uhci_iterate_hw_softc(struct usb_bus *bus, usb_bus_mem_sub_cb_t *cb) { struct uhci_softc *sc = UHCI_BUS2SC(bus); uint32_t i; cb(bus, &sc->sc_hw.pframes_pc, &sc->sc_hw.pframes_pg, sizeof(uint32_t) * UHCI_FRAMELIST_COUNT, UHCI_FRAMELIST_ALIGN); cb(bus, &sc->sc_hw.ls_ctl_start_pc, &sc->sc_hw.ls_ctl_start_pg, sizeof(uhci_qh_t), UHCI_QH_ALIGN); cb(bus, &sc->sc_hw.fs_ctl_start_pc, &sc->sc_hw.fs_ctl_start_pg, sizeof(uhci_qh_t), UHCI_QH_ALIGN); cb(bus, &sc->sc_hw.bulk_start_pc, &sc->sc_hw.bulk_start_pg, sizeof(uhci_qh_t), UHCI_QH_ALIGN); cb(bus, &sc->sc_hw.last_qh_pc, &sc->sc_hw.last_qh_pg, sizeof(uhci_qh_t), UHCI_QH_ALIGN); cb(bus, &sc->sc_hw.last_td_pc, &sc->sc_hw.last_td_pg, sizeof(uhci_td_t), UHCI_TD_ALIGN); for (i = 0; i != UHCI_VFRAMELIST_COUNT; i++) { cb(bus, sc->sc_hw.isoc_start_pc + i, sc->sc_hw.isoc_start_pg + i, sizeof(uhci_td_t), UHCI_TD_ALIGN); } for (i = 0; i != UHCI_IFRAMELIST_COUNT; i++) { cb(bus, sc->sc_hw.intr_start_pc + i, sc->sc_hw.intr_start_pg + i, sizeof(uhci_qh_t), UHCI_QH_ALIGN); } } static void uhci_mem_layout_init(struct uhci_mem_layout *ml, struct usb_xfer *xfer) { ml->buf_pc = xfer->frbuffers + 0; ml->fix_pc = xfer->buf_fixup; ml->buf_offset = 0; ml->max_frame_size = xfer->max_frame_size; } static void uhci_mem_layout_fixup(struct uhci_mem_layout *ml, struct uhci_td *td) { usbd_get_page(ml->buf_pc, ml->buf_offset, &ml->buf_res); if (ml->buf_res.length < td->len) { /* need to do a fixup */ usbd_get_page(ml->fix_pc, 0, &ml->fix_res); td->td_buffer = htole32(ml->fix_res.physaddr); /* * The UHCI driver cannot handle * page crossings, so a fixup is * needed: * * +----+----+ - - - * | YYY|Y | * +----+----+ - - - * \ \ * \ \ * +----+ * |YYYY| (fixup) * +----+ */ if ((td->td_token & htole32(UHCI_TD_PID)) == htole32(UHCI_TD_PID_IN)) { td->fix_pc = ml->fix_pc; usb_pc_cpu_invalidate(ml->fix_pc); } else { td->fix_pc = NULL; /* copy data to fixup location */ usbd_copy_out(ml->buf_pc, ml->buf_offset, ml->fix_res.buffer, td->len); usb_pc_cpu_flush(ml->fix_pc); } /* prepare next fixup */ ml->fix_pc++; } else { td->td_buffer = htole32(ml->buf_res.physaddr); td->fix_pc = NULL; } /* prepare next data location */ ml->buf_offset += td->len; } /* * Return values: * 0: Success * Else: Failure */ static uint8_t uhci_restart(uhci_softc_t *sc) { struct usb_page_search buf_res; USB_BUS_LOCK_ASSERT(&sc->sc_bus); if (UREAD2(sc, UHCI_CMD) & UHCI_CMD_RS) { DPRINTFN(2, "Already started\n"); return (0); } DPRINTFN(2, "Restarting\n"); usbd_get_page(&sc->sc_hw.pframes_pc, 0, &buf_res); /* Reload fresh base address */ UWRITE4(sc, UHCI_FLBASEADDR, buf_res.physaddr); /* * Assume 64 byte packets at frame end and start HC controller: */ UHCICMD(sc, (UHCI_CMD_MAXP | UHCI_CMD_RS)); /* wait 10 milliseconds */ usb_pause_mtx(&sc->sc_bus.bus_lock, hz / 100); /* check that controller has started */ if (UREAD2(sc, UHCI_STS) & UHCI_STS_HCH) { DPRINTFN(2, "Failed\n"); return (1); } return (0); } void uhci_reset(uhci_softc_t *sc) { uint16_t n; USB_BUS_LOCK_ASSERT(&sc->sc_bus); DPRINTF("resetting the HC\n"); /* disable interrupts */ UWRITE2(sc, UHCI_INTR, 0); /* global reset */ UHCICMD(sc, UHCI_CMD_GRESET); /* wait */ usb_pause_mtx(&sc->sc_bus.bus_lock, USB_MS_TO_TICKS(USB_BUS_RESET_DELAY)); /* terminate all transfers */ UHCICMD(sc, UHCI_CMD_HCRESET); /* the reset bit goes low when the controller is done */ n = UHCI_RESET_TIMEOUT; while (n--) { /* wait one millisecond */ usb_pause_mtx(&sc->sc_bus.bus_lock, hz / 1000); if (!(UREAD2(sc, UHCI_CMD) & UHCI_CMD_HCRESET)) { goto done_1; } } device_printf(sc->sc_bus.bdev, "controller did not reset\n"); done_1: n = 10; while (n--) { /* wait one millisecond */ usb_pause_mtx(&sc->sc_bus.bus_lock, hz / 1000); /* check if HC is stopped */ if (UREAD2(sc, UHCI_STS) & UHCI_STS_HCH) { goto done_2; } } device_printf(sc->sc_bus.bdev, "controller did not stop\n"); done_2: /* reset frame number */ UWRITE2(sc, UHCI_FRNUM, 0); /* set default SOF value */ UWRITE1(sc, UHCI_SOF, 0x40); USB_BUS_UNLOCK(&sc->sc_bus); /* stop root interrupt */ if (sc->sc_didinit) usb_callout_drain(&sc->sc_root_intr); USB_BUS_LOCK(&sc->sc_bus); } static void uhci_start(uhci_softc_t *sc) { USB_BUS_LOCK_ASSERT(&sc->sc_bus); DPRINTFN(2, "enabling\n"); /* enable interrupts */ UWRITE2(sc, UHCI_INTR, (UHCI_INTR_TOCRCIE | UHCI_INTR_RIE | UHCI_INTR_IOCE | UHCI_INTR_SPIE)); if (uhci_restart(sc)) { device_printf(sc->sc_bus.bdev, "cannot start HC controller\n"); } /* start root interrupt */ uhci_root_intr(sc); } static struct uhci_qh * uhci_init_qh(struct usb_page_cache *pc) { struct usb_page_search buf_res; struct uhci_qh *qh; usbd_get_page(pc, 0, &buf_res); qh = buf_res.buffer; qh->qh_self = htole32(buf_res.physaddr) | htole32(UHCI_PTR_QH); qh->page_cache = pc; return (qh); } static struct uhci_td * uhci_init_td(struct usb_page_cache *pc) { struct usb_page_search buf_res; struct uhci_td *td; usbd_get_page(pc, 0, &buf_res); td = buf_res.buffer; td->td_self = htole32(buf_res.physaddr) | htole32(UHCI_PTR_TD); td->page_cache = pc; return (td); } usb_error_t uhci_init(uhci_softc_t *sc) { uint16_t bit; uint16_t x; uint16_t y; DPRINTF("start\n"); sc->sc_didinit = 1; usb_callout_init_mtx(&sc->sc_root_intr, &sc->sc_bus.bus_lock, 0); #ifdef USB_DEBUG if (uhcidebug > 2) { uhci_dumpregs(sc); } #endif /* * Setup QH's */ sc->sc_ls_ctl_p_last = uhci_init_qh(&sc->sc_hw.ls_ctl_start_pc); sc->sc_fs_ctl_p_last = uhci_init_qh(&sc->sc_hw.fs_ctl_start_pc); sc->sc_bulk_p_last = uhci_init_qh(&sc->sc_hw.bulk_start_pc); #if 0 sc->sc_reclaim_qh_p = sc->sc_fs_ctl_p_last; #else /* setup reclaim looping point */ sc->sc_reclaim_qh_p = sc->sc_bulk_p_last; #endif sc->sc_last_qh_p = uhci_init_qh(&sc->sc_hw.last_qh_pc); sc->sc_last_td_p = uhci_init_td(&sc->sc_hw.last_td_pc); for (x = 0; x != UHCI_VFRAMELIST_COUNT; x++) { sc->sc_isoc_p_last[x] = uhci_init_td(sc->sc_hw.isoc_start_pc + x); } for (x = 0; x != UHCI_IFRAMELIST_COUNT; x++) { sc->sc_intr_p_last[x] = uhci_init_qh(sc->sc_hw.intr_start_pc + x); } /* * the QHs are arranged to give poll intervals that are * powers of 2 times 1ms */ bit = UHCI_IFRAMELIST_COUNT / 2; while (bit) { x = bit; while (x & bit) { uhci_qh_t *qh_x; uhci_qh_t *qh_y; y = (x ^ bit) | (bit / 2); /* * the next QH has half the poll interval */ qh_x = sc->sc_intr_p_last[x]; qh_y = sc->sc_intr_p_last[y]; qh_x->h_next = NULL; qh_x->qh_h_next = qh_y->qh_self; qh_x->e_next = NULL; qh_x->qh_e_next = htole32(UHCI_PTR_T); x++; } bit >>= 1; } if (1) { uhci_qh_t *qh_ls; uhci_qh_t *qh_intr; qh_ls = sc->sc_ls_ctl_p_last; qh_intr = sc->sc_intr_p_last[0]; /* start QH for interrupt traffic */ qh_intr->h_next = qh_ls; qh_intr->qh_h_next = qh_ls->qh_self; qh_intr->e_next = 0; qh_intr->qh_e_next = htole32(UHCI_PTR_T); } for (x = 0; x != UHCI_VFRAMELIST_COUNT; x++) { uhci_td_t *td_x; uhci_qh_t *qh_intr; td_x = sc->sc_isoc_p_last[x]; qh_intr = sc->sc_intr_p_last[x | (UHCI_IFRAMELIST_COUNT / 2)]; /* start TD for isochronous traffic */ td_x->next = NULL; td_x->td_next = qh_intr->qh_self; td_x->td_status = htole32(UHCI_TD_IOS); td_x->td_token = htole32(0); td_x->td_buffer = htole32(0); } if (1) { uhci_qh_t *qh_ls; uhci_qh_t *qh_fs; qh_ls = sc->sc_ls_ctl_p_last; qh_fs = sc->sc_fs_ctl_p_last; /* start QH where low speed control traffic will be queued */ qh_ls->h_next = qh_fs; qh_ls->qh_h_next = qh_fs->qh_self; qh_ls->e_next = 0; qh_ls->qh_e_next = htole32(UHCI_PTR_T); } if (1) { uhci_qh_t *qh_ctl; uhci_qh_t *qh_blk; uhci_qh_t *qh_lst; uhci_td_t *td_lst; qh_ctl = sc->sc_fs_ctl_p_last; qh_blk = sc->sc_bulk_p_last; /* start QH where full speed control traffic will be queued */ qh_ctl->h_next = qh_blk; qh_ctl->qh_h_next = qh_blk->qh_self; qh_ctl->e_next = 0; qh_ctl->qh_e_next = htole32(UHCI_PTR_T); qh_lst = sc->sc_last_qh_p; /* start QH where bulk traffic will be queued */ qh_blk->h_next = qh_lst; qh_blk->qh_h_next = qh_lst->qh_self; qh_blk->e_next = 0; qh_blk->qh_e_next = htole32(UHCI_PTR_T); td_lst = sc->sc_last_td_p; /* end QH which is used for looping the QHs */ qh_lst->h_next = 0; qh_lst->qh_h_next = htole32(UHCI_PTR_T); /* end of QH chain */ qh_lst->e_next = td_lst; qh_lst->qh_e_next = td_lst->td_self; /* * end TD which hangs from the last QH, to avoid a bug in the PIIX * that makes it run berserk otherwise */ td_lst->next = 0; td_lst->td_next = htole32(UHCI_PTR_T); td_lst->td_status = htole32(0); /* inactive */ td_lst->td_token = htole32(0); td_lst->td_buffer = htole32(0); } if (1) { struct usb_page_search buf_res; uint32_t *pframes; usbd_get_page(&sc->sc_hw.pframes_pc, 0, &buf_res); pframes = buf_res.buffer; /* * Setup UHCI framelist * * Execution order: * * pframes -> full speed isochronous -> interrupt QH's -> low * speed control -> full speed control -> bulk transfers * */ for (x = 0; x != UHCI_FRAMELIST_COUNT; x++) { pframes[x] = sc->sc_isoc_p_last[x % UHCI_VFRAMELIST_COUNT]->td_self; } } /* flush all cache into memory */ usb_bus_mem_flush_all(&sc->sc_bus, &uhci_iterate_hw_softc); /* set up the bus struct */ sc->sc_bus.methods = &uhci_bus_methods; USB_BUS_LOCK(&sc->sc_bus); /* reset the controller */ uhci_reset(sc); /* start the controller */ uhci_start(sc); USB_BUS_UNLOCK(&sc->sc_bus); /* catch lost interrupts */ uhci_do_poll(&sc->sc_bus); return (0); } static void uhci_suspend(uhci_softc_t *sc) { #ifdef USB_DEBUG if (uhcidebug > 2) { uhci_dumpregs(sc); } #endif USB_BUS_LOCK(&sc->sc_bus); /* stop the controller */ uhci_reset(sc); /* enter global suspend */ UHCICMD(sc, UHCI_CMD_EGSM); USB_BUS_UNLOCK(&sc->sc_bus); } static void uhci_resume(uhci_softc_t *sc) { USB_BUS_LOCK(&sc->sc_bus); /* reset the controller */ uhci_reset(sc); /* force global resume */ UHCICMD(sc, UHCI_CMD_FGR); /* and start traffic again */ uhci_start(sc); USB_BUS_UNLOCK(&sc->sc_bus); #ifdef USB_DEBUG if (uhcidebug > 2) uhci_dumpregs(sc); #endif /* catch lost interrupts */ uhci_do_poll(&sc->sc_bus); } #ifdef USB_DEBUG static void uhci_dumpregs(uhci_softc_t *sc) { DPRINTFN(0, "%s regs: cmd=%04x, sts=%04x, intr=%04x, frnum=%04x, " "flbase=%08x, sof=%04x, portsc1=%04x, portsc2=%04x\n", device_get_nameunit(sc->sc_bus.bdev), UREAD2(sc, UHCI_CMD), UREAD2(sc, UHCI_STS), UREAD2(sc, UHCI_INTR), UREAD2(sc, UHCI_FRNUM), UREAD4(sc, UHCI_FLBASEADDR), UREAD1(sc, UHCI_SOF), UREAD2(sc, UHCI_PORTSC1), UREAD2(sc, UHCI_PORTSC2)); } static uint8_t uhci_dump_td(uhci_td_t *p) { uint32_t td_next; uint32_t td_status; uint32_t td_token; uint8_t temp; usb_pc_cpu_invalidate(p->page_cache); td_next = le32toh(p->td_next); td_status = le32toh(p->td_status); td_token = le32toh(p->td_token); /* * Check whether the link pointer in this TD marks the link pointer * as end of queue: */ temp = ((td_next & UHCI_PTR_T) || (td_next == 0)); kprintf("TD(%p) at 0x%08x = link=0x%08x status=0x%08x " "token=0x%08x buffer=0x%08x\n", p, le32toh(p->td_self), td_next, td_status, td_token, le32toh(p->td_buffer)); kprintf("TD(%p) td_next=%s%s%s td_status=%s%s%s%s%s%s%s%s%s%s%s, errcnt=%d, actlen=%d pid=%02x," "addr=%d,endpt=%d,D=%d,maxlen=%d\n", p, (td_next & 1) ? "-T" : "", (td_next & 2) ? "-Q" : "", (td_next & 4) ? "-VF" : "", (td_status & UHCI_TD_BITSTUFF) ? "-BITSTUFF" : "", (td_status & UHCI_TD_CRCTO) ? "-CRCTO" : "", (td_status & UHCI_TD_NAK) ? "-NAK" : "", (td_status & UHCI_TD_BABBLE) ? "-BABBLE" : "", (td_status & UHCI_TD_DBUFFER) ? "-DBUFFER" : "", (td_status & UHCI_TD_STALLED) ? "-STALLED" : "", (td_status & UHCI_TD_ACTIVE) ? "-ACTIVE" : "", (td_status & UHCI_TD_IOC) ? "-IOC" : "", (td_status & UHCI_TD_IOS) ? "-IOS" : "", (td_status & UHCI_TD_LS) ? "-LS" : "", (td_status & UHCI_TD_SPD) ? "-SPD" : "", UHCI_TD_GET_ERRCNT(td_status), UHCI_TD_GET_ACTLEN(td_status), UHCI_TD_GET_PID(td_token), UHCI_TD_GET_DEVADDR(td_token), UHCI_TD_GET_ENDPT(td_token), UHCI_TD_GET_DT(td_token), UHCI_TD_GET_MAXLEN(td_token)); return (temp); } static uint8_t uhci_dump_qh(uhci_qh_t *sqh) { uint8_t temp; uint32_t qh_h_next; uint32_t qh_e_next; usb_pc_cpu_invalidate(sqh->page_cache); qh_h_next = le32toh(sqh->qh_h_next); qh_e_next = le32toh(sqh->qh_e_next); DPRINTFN(0, "QH(%p) at 0x%08x: h_next=0x%08x e_next=0x%08x\n", sqh, le32toh(sqh->qh_self), qh_h_next, qh_e_next); temp = ((((sqh->h_next != NULL) && !(qh_h_next & UHCI_PTR_T)) ? 1 : 0) | (((sqh->e_next != NULL) && !(qh_e_next & UHCI_PTR_T)) ? 2 : 0)); return (temp); } static void uhci_dump_all(uhci_softc_t *sc) { uhci_dumpregs(sc); uhci_dump_qh(sc->sc_ls_ctl_p_last); uhci_dump_qh(sc->sc_fs_ctl_p_last); uhci_dump_qh(sc->sc_bulk_p_last); uhci_dump_qh(sc->sc_last_qh_p); } static void uhci_dump_tds(uhci_td_t *td) { for (; td != NULL; td = td->obj_next) { if (uhci_dump_td(td)) { break; } } } #endif /* * Let the last QH loop back to the full speed control transfer QH. * This is what intel calls "bandwidth reclamation" and improves * USB performance a lot for some devices. * If we are already looping, just count it. */ static void uhci_add_loop(uhci_softc_t *sc) { struct uhci_qh *qh_lst; struct uhci_qh *qh_rec; #ifdef USB_DEBUG if (uhcinoloop) { return; } #endif if (++(sc->sc_loops) == 1) { DPRINTFN(6, "add\n"); qh_lst = sc->sc_last_qh_p; qh_rec = sc->sc_reclaim_qh_p; /* NOTE: we don't loop back the soft pointer */ qh_lst->qh_h_next = qh_rec->qh_self; usb_pc_cpu_flush(qh_lst->page_cache); } } static void uhci_rem_loop(uhci_softc_t *sc) { struct uhci_qh *qh_lst; #ifdef USB_DEBUG if (uhcinoloop) { return; } #endif if (--(sc->sc_loops) == 0) { DPRINTFN(6, "remove\n"); qh_lst = sc->sc_last_qh_p; qh_lst->qh_h_next = htole32(UHCI_PTR_T); usb_pc_cpu_flush(qh_lst->page_cache); } } static void uhci_transfer_intr_enqueue(struct usb_xfer *xfer) { /* check for early completion */ if (uhci_check_transfer(xfer)) { return; } /* put transfer on interrupt queue */ usbd_transfer_enqueue(&xfer->xroot->bus->intr_q, xfer); /* start timeout, if any */ if (xfer->timeout != 0) { usbd_transfer_timeout_ms(xfer, &uhci_timeout, xfer->timeout); } } #define UHCI_APPEND_TD(std,last) (last) = _uhci_append_td(std,last) static uhci_td_t * _uhci_append_td(uhci_td_t *std, uhci_td_t *last) { DPRINTFN(11, "%p to %p\n", std, last); /* (sc->sc_bus.lock) must be locked */ std->next = last->next; std->td_next = last->td_next; std->prev = last; usb_pc_cpu_flush(std->page_cache); /* * the last->next->prev is never followed: std->next->prev = std; */ last->next = std; last->td_next = std->td_self; usb_pc_cpu_flush(last->page_cache); return (std); } #define UHCI_APPEND_QH(sqh,last) (last) = _uhci_append_qh(sqh,last) static uhci_qh_t * _uhci_append_qh(uhci_qh_t *sqh, uhci_qh_t *last) { DPRINTFN(11, "%p to %p\n", sqh, last); if (sqh->h_prev != NULL) { /* should not happen */ DPRINTFN(0, "QH already linked!\n"); return (last); } /* (sc->sc_bus.lock) must be locked */ sqh->h_next = last->h_next; sqh->qh_h_next = last->qh_h_next; sqh->h_prev = last; usb_pc_cpu_flush(sqh->page_cache); /* * The "last->h_next->h_prev" is never followed: * * "sqh->h_next->h_prev" = sqh; */ last->h_next = sqh; last->qh_h_next = sqh->qh_self; usb_pc_cpu_flush(last->page_cache); return (sqh); } /**/ #define UHCI_REMOVE_TD(std,last) (last) = _uhci_remove_td(std,last) static uhci_td_t * _uhci_remove_td(uhci_td_t *std, uhci_td_t *last) { DPRINTFN(11, "%p from %p\n", std, last); /* (sc->sc_bus.lock) must be locked */ std->prev->next = std->next; std->prev->td_next = std->td_next; usb_pc_cpu_flush(std->prev->page_cache); if (std->next) { std->next->prev = std->prev; usb_pc_cpu_flush(std->next->page_cache); } return ((last == std) ? std->prev : last); } #define UHCI_REMOVE_QH(sqh,last) (last) = _uhci_remove_qh(sqh,last) static uhci_qh_t * _uhci_remove_qh(uhci_qh_t *sqh, uhci_qh_t *last) { DPRINTFN(11, "%p from %p\n", sqh, last); /* (sc->sc_bus.lock) must be locked */ /* only remove if not removed from a queue */ if (sqh->h_prev) { sqh->h_prev->h_next = sqh->h_next; sqh->h_prev->qh_h_next = sqh->qh_h_next; usb_pc_cpu_flush(sqh->h_prev->page_cache); if (sqh->h_next) { sqh->h_next->h_prev = sqh->h_prev; usb_pc_cpu_flush(sqh->h_next->page_cache); } last = ((last == sqh) ? sqh->h_prev : last); sqh->h_prev = 0; usb_pc_cpu_flush(sqh->page_cache); } return (last); } static void uhci_isoc_done(uhci_softc_t *sc, struct usb_xfer *xfer) { struct usb_page_search res; uint32_t nframes = xfer->nframes; uint32_t status; uint32_t offset = 0; uint32_t *plen = xfer->frlengths; uint16_t len = 0; uhci_td_t *td = xfer->td_transfer_first; uhci_td_t **pp_last = &sc->sc_isoc_p_last[xfer->qh_pos]; DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n", xfer, xfer->endpoint); /* sync any DMA memory before doing fixups */ usb_bdma_post_sync(xfer); while (nframes--) { if (td == NULL) { panic("%s:%d: out of TD's\n", __func__, __LINE__); } if (pp_last >= &sc->sc_isoc_p_last[UHCI_VFRAMELIST_COUNT]) { pp_last = &sc->sc_isoc_p_last[0]; } #ifdef USB_DEBUG if (uhcidebug > 5) { DPRINTF("isoc TD\n"); uhci_dump_td(td); } #endif usb_pc_cpu_invalidate(td->page_cache); status = le32toh(td->td_status); len = UHCI_TD_GET_ACTLEN(status); if (len > *plen) { len = *plen; } if (td->fix_pc) { usbd_get_page(td->fix_pc, 0, &res); /* copy data from fixup location to real location */ usb_pc_cpu_invalidate(td->fix_pc); usbd_copy_in(xfer->frbuffers, offset, res.buffer, len); } offset += *plen; *plen = len; /* remove TD from schedule */ UHCI_REMOVE_TD(td, *pp_last); pp_last++; plen++; td = td->obj_next; } xfer->aframes = xfer->nframes; } static usb_error_t uhci_non_isoc_done_sub(struct usb_xfer *xfer) { struct usb_page_search res; uhci_td_t *td; uhci_td_t *td_alt_next; uint32_t status; uint32_t token; uint16_t len; td = xfer->td_transfer_cache; td_alt_next = td->alt_next; if (xfer->aframes != xfer->nframes) { usbd_xfer_set_frame_len(xfer, xfer->aframes, 0); } while (1) { usb_pc_cpu_invalidate(td->page_cache); status = le32toh(td->td_status); token = le32toh(td->td_token); /* * Verify the status and add * up the actual length: */ len = UHCI_TD_GET_ACTLEN(status); if (len > td->len) { /* should not happen */ DPRINTF("Invalid status length, " "0x%04x/0x%04x bytes\n", len, td->len); status |= UHCI_TD_STALLED; } else if ((xfer->aframes != xfer->nframes) && (len > 0)) { if (td->fix_pc) { usbd_get_page(td->fix_pc, 0, &res); /* * copy data from fixup location to real * location */ usb_pc_cpu_invalidate(td->fix_pc); usbd_copy_in(xfer->frbuffers + xfer->aframes, xfer->frlengths[xfer->aframes], res.buffer, len); } /* update actual length */ xfer->frlengths[xfer->aframes] += len; } /* Check for last transfer */ if (((void *)td) == xfer->td_transfer_last) { td = NULL; break; } if (status & UHCI_TD_STALLED) { /* the transfer is finished */ td = NULL; break; } /* Check for short transfer */ if (len != td->len) { if (xfer->flags_int.short_frames_ok) { /* follow alt next */ td = td->alt_next; } else { /* the transfer is finished */ td = NULL; } break; } td = td->obj_next; if (td->alt_next != td_alt_next) { /* this USB frame is complete */ break; } } /* update transfer cache */ xfer->td_transfer_cache = td; /* update data toggle */ xfer->endpoint->toggle_next = (token & UHCI_TD_SET_DT(1)) ? 0 : 1; #ifdef USB_DEBUG if (status & UHCI_TD_ERROR) { DPRINTFN(11, "error, addr=%d, endpt=0x%02x, frame=0x%02x " "status=%s%s%s%s%s%s%s%s%s%s%s\n", xfer->address, xfer->endpointno, xfer->aframes, (status & UHCI_TD_BITSTUFF) ? "[BITSTUFF]" : "", (status & UHCI_TD_CRCTO) ? "[CRCTO]" : "", (status & UHCI_TD_NAK) ? "[NAK]" : "", (status & UHCI_TD_BABBLE) ? "[BABBLE]" : "", (status & UHCI_TD_DBUFFER) ? "[DBUFFER]" : "", (status & UHCI_TD_STALLED) ? "[STALLED]" : "", (status & UHCI_TD_ACTIVE) ? "[ACTIVE]" : "[NOT_ACTIVE]", (status & UHCI_TD_IOC) ? "[IOC]" : "", (status & UHCI_TD_IOS) ? "[IOS]" : "", (status & UHCI_TD_LS) ? "[LS]" : "", (status & UHCI_TD_SPD) ? "[SPD]" : ""); } #endif if (status & UHCI_TD_STALLED) { /* try to separate I/O errors from STALL */ if (UHCI_TD_GET_ERRCNT(status) == 0) return (USB_ERR_IOERROR); return (USB_ERR_STALLED); } return (USB_ERR_NORMAL_COMPLETION); } static void uhci_non_isoc_done(struct usb_xfer *xfer) { usb_error_t err = 0; DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n", xfer, xfer->endpoint); #ifdef USB_DEBUG if (uhcidebug > 10) { uhci_dump_tds(xfer->td_transfer_first); } #endif /* sync any DMA memory before doing fixups */ usb_bdma_post_sync(xfer); /* reset scanner */ xfer->td_transfer_cache = xfer->td_transfer_first; if (xfer->flags_int.control_xfr) { if (xfer->flags_int.control_hdr) { err = uhci_non_isoc_done_sub(xfer); } xfer->aframes = 1; if (xfer->td_transfer_cache == NULL) { goto done; } } while (xfer->aframes != xfer->nframes) { err = uhci_non_isoc_done_sub(xfer); xfer->aframes++; if (xfer->td_transfer_cache == NULL) { goto done; } } if (xfer->flags_int.control_xfr && !xfer->flags_int.control_act) { err = uhci_non_isoc_done_sub(xfer); } done: uhci_device_done(xfer, err); } /*------------------------------------------------------------------------* * uhci_check_transfer_sub * * The main purpose of this function is to update the data-toggle * in case it is wrong. *------------------------------------------------------------------------*/ static void uhci_check_transfer_sub(struct usb_xfer *xfer) { uhci_qh_t *qh; uhci_td_t *td; uhci_td_t *td_alt_next; uint32_t td_token; uint32_t td_self; td = xfer->td_transfer_cache; qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; td_token = td->obj_next->td_token; td = td->alt_next; xfer->td_transfer_cache = td; td_self = td->td_self; td_alt_next = td->alt_next; if (xfer->flags_int.control_xfr) goto skip; /* don't touch the DT value! */ if (!((td->td_token ^ td_token) & htole32(UHCI_TD_SET_DT(1)))) goto skip; /* data toggle has correct value */ /* * The data toggle is wrong and we need to toggle it ! */ while (1) { td->td_token ^= htole32(UHCI_TD_SET_DT(1)); usb_pc_cpu_flush(td->page_cache); if (td == xfer->td_transfer_last) { /* last transfer */ break; } td = td->obj_next; if (td->alt_next != td_alt_next) { /* next frame */ break; } } skip: /* update the QH */ qh->qh_e_next = td_self; usb_pc_cpu_flush(qh->page_cache); DPRINTFN(13, "xfer=%p following alt next\n", xfer); } /*------------------------------------------------------------------------* * uhci_check_transfer * * Return values: * 0: USB transfer is not finished * Else: USB transfer is finished *------------------------------------------------------------------------*/ static uint8_t uhci_check_transfer(struct usb_xfer *xfer) { uint32_t status; uint32_t token; uhci_td_t *td; DPRINTFN(16, "xfer=%p checking transfer\n", xfer); if (xfer->endpoint->methods == &uhci_device_isoc_methods) { /* isochronous transfer */ td = xfer->td_transfer_last; usb_pc_cpu_invalidate(td->page_cache); status = le32toh(td->td_status); /* check also if the first is complete */ td = xfer->td_transfer_first; usb_pc_cpu_invalidate(td->page_cache); status |= le32toh(td->td_status); if (!(status & UHCI_TD_ACTIVE)) { uhci_device_done(xfer, USB_ERR_NORMAL_COMPLETION); goto transferred; } } else { /* non-isochronous transfer */ /* * check whether there is an error somewhere * in the middle, or whether there was a short * packet (SPD and not ACTIVE) */ td = xfer->td_transfer_cache; while (1) { usb_pc_cpu_invalidate(td->page_cache); status = le32toh(td->td_status); token = le32toh(td->td_token); /* * if there is an active TD the transfer isn't done */ if (status & UHCI_TD_ACTIVE) { /* update cache */ xfer->td_transfer_cache = td; goto done; } /* * last transfer descriptor makes the transfer done */ if (((void *)td) == xfer->td_transfer_last) { break; } /* * any kind of error makes the transfer done */ if (status & UHCI_TD_STALLED) { break; } /* * check if we reached the last packet * or if there is a short packet: */ if ((td->td_next == htole32(UHCI_PTR_T)) || (UHCI_TD_GET_ACTLEN(status) < td->len)) { if (xfer->flags_int.short_frames_ok) { /* follow alt next */ if (td->alt_next) { /* update cache */ xfer->td_transfer_cache = td; uhci_check_transfer_sub(xfer); goto done; } } /* transfer is done */ break; } td = td->obj_next; } uhci_non_isoc_done(xfer); goto transferred; } done: DPRINTFN(13, "xfer=%p is still active\n", xfer); return (0); transferred: return (1); } static void uhci_interrupt_poll(uhci_softc_t *sc) { struct usb_xfer *xfer; repeat: TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) { /* * check if transfer is transferred */ if (uhci_check_transfer(xfer)) { /* queue has been modified */ goto repeat; } } } /*------------------------------------------------------------------------* * uhci_interrupt - UHCI interrupt handler * * NOTE: Do not access "sc->sc_bus.bdev" inside the interrupt handler, * hence the interrupt handler will be setup before "sc->sc_bus.bdev" * is present ! *------------------------------------------------------------------------*/ void uhci_interrupt(uhci_softc_t *sc) { uint32_t status; USB_BUS_LOCK(&sc->sc_bus); DPRINTFN(16, "real interrupt\n"); #ifdef USB_DEBUG if (uhcidebug > 15) { uhci_dumpregs(sc); } #endif status = UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS; if (status == 0) { /* the interrupt was not for us */ goto done; } if (status & (UHCI_STS_RD | UHCI_STS_HSE | UHCI_STS_HCPE | UHCI_STS_HCH)) { if (status & UHCI_STS_RD) { #ifdef USB_DEBUG kprintf("%s: resume detect\n", __func__); #endif } if (status & UHCI_STS_HSE) { kprintf("%s: host system error\n", __func__); } if (status & UHCI_STS_HCPE) { kprintf("%s: host controller process error\n", __func__); } if (status & UHCI_STS_HCH) { /* no acknowledge needed */ DPRINTF("%s: host controller halted\n", __func__); #ifdef USB_DEBUG if (uhcidebug > 0) { uhci_dump_all(sc); } #endif } } /* get acknowledge bits */ status &= (UHCI_STS_USBINT | UHCI_STS_USBEI | UHCI_STS_RD | UHCI_STS_HSE | UHCI_STS_HCPE | UHCI_STS_HCH); if (status == 0) { /* nothing to acknowledge */ goto done; } /* acknowledge interrupts */ UWRITE2(sc, UHCI_STS, status); /* poll all the USB transfers */ uhci_interrupt_poll(sc); done: USB_BUS_UNLOCK(&sc->sc_bus); } /* * called when a request does not complete */ static void uhci_timeout(void *arg) { struct usb_xfer *xfer = arg; DPRINTF("xfer=%p\n", xfer); USB_BUS_LOCK_ASSERT(xfer->xroot->bus); /* transfer is transferred */ uhci_device_done(xfer, USB_ERR_TIMEOUT); } static void uhci_do_poll(struct usb_bus *bus) { struct uhci_softc *sc = UHCI_BUS2SC(bus); USB_BUS_LOCK(&sc->sc_bus); uhci_interrupt_poll(sc); USB_BUS_UNLOCK(&sc->sc_bus); } static void uhci_setup_standard_chain_sub(struct uhci_std_temp *temp) { uhci_td_t *td; uhci_td_t *td_next; uhci_td_t *td_alt_next; uint32_t average; uint32_t len_old; uint8_t shortpkt_old; uint8_t precompute; td_alt_next = NULL; shortpkt_old = temp->shortpkt; len_old = temp->len; precompute = 1; /* software is used to detect short incoming transfers */ if ((temp->td_token & htole32(UHCI_TD_PID)) == htole32(UHCI_TD_PID_IN)) { temp->td_status |= htole32(UHCI_TD_SPD); } else { temp->td_status &= ~htole32(UHCI_TD_SPD); } temp->ml.buf_offset = 0; restart: temp->td_token &= ~htole32(UHCI_TD_SET_MAXLEN(0)); temp->td_token |= htole32(UHCI_TD_SET_MAXLEN(temp->average)); td = temp->td; td_next = temp->td_next; while (1) { if (temp->len == 0) { if (temp->shortpkt) { break; } /* send a Zero Length Packet, ZLP, last */ temp->shortpkt = 1; temp->td_token |= htole32(UHCI_TD_SET_MAXLEN(0)); average = 0; } else { average = temp->average; if (temp->len < average) { temp->shortpkt = 1; temp->td_token &= ~htole32(UHCI_TD_SET_MAXLEN(0)); temp->td_token |= htole32(UHCI_TD_SET_MAXLEN(temp->len)); average = temp->len; } } if (td_next == NULL) { panic("%s: out of UHCI transfer descriptors!", __func__); } /* get next TD */ td = td_next; td_next = td->obj_next; /* check if we are pre-computing */ if (precompute) { /* update remaining length */ temp->len -= average; continue; } /* fill out current TD */ td->td_status = temp->td_status; td->td_token = temp->td_token; /* update data toggle */ temp->td_token ^= htole32(UHCI_TD_SET_DT(1)); if (average == 0) { td->len = 0; td->td_buffer = 0; td->fix_pc = NULL; } else { /* update remaining length */ temp->len -= average; td->len = average; /* fill out buffer pointer and do fixup, if any */ uhci_mem_layout_fixup(&temp->ml, td); } td->alt_next = td_alt_next; if ((td_next == td_alt_next) && temp->setup_alt_next) { /* we need to receive these frames one by one ! */ td->td_status |= htole32(UHCI_TD_IOC); td->td_next = htole32(UHCI_PTR_T); } else { if (td_next) { /* link the current TD with the next one */ td->td_next = td_next->td_self; } } usb_pc_cpu_flush(td->page_cache); } if (precompute) { precompute = 0; /* setup alt next pointer, if any */ if (temp->last_frame) { td_alt_next = NULL; } else { /* we use this field internally */ td_alt_next = td_next; } /* restore */ temp->shortpkt = shortpkt_old; temp->len = len_old; goto restart; } temp->td = td; temp->td_next = td_next; } static uhci_td_t * uhci_setup_standard_chain(struct usb_xfer *xfer) { struct uhci_std_temp temp; uhci_td_t *td; uint32_t x; DPRINTFN(9, "addr=%d endpt=%d sumlen=%d speed=%d\n", xfer->address, UE_GET_ADDR(xfer->endpointno), xfer->sumlen, usbd_get_speed(xfer->xroot->udev)); temp.average = xfer->max_frame_size; temp.max_frame_size = xfer->max_frame_size; /* toggle the DMA set we are using */ xfer->flags_int.curr_dma_set ^= 1; /* get next DMA set */ td = xfer->td_start[xfer->flags_int.curr_dma_set]; xfer->td_transfer_first = td; xfer->td_transfer_cache = td; temp.td = NULL; temp.td_next = td; temp.last_frame = 0; temp.setup_alt_next = xfer->flags_int.short_frames_ok; uhci_mem_layout_init(&temp.ml, xfer); temp.td_status = htole32(UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(3) | UHCI_TD_ACTIVE)); if (xfer->xroot->udev->speed == USB_SPEED_LOW) { temp.td_status |= htole32(UHCI_TD_LS); } temp.td_token = htole32(UHCI_TD_SET_ENDPT(xfer->endpointno) | UHCI_TD_SET_DEVADDR(xfer->address)); if (xfer->endpoint->toggle_next) { /* DATA1 is next */ temp.td_token |= htole32(UHCI_TD_SET_DT(1)); } /* check if we should prepend a setup message */ if (xfer->flags_int.control_xfr) { if (xfer->flags_int.control_hdr) { temp.td_token &= htole32(UHCI_TD_SET_DEVADDR(0x7F) | UHCI_TD_SET_ENDPT(0xF)); temp.td_token |= htole32(UHCI_TD_PID_SETUP | UHCI_TD_SET_DT(0)); temp.len = xfer->frlengths[0]; temp.ml.buf_pc = xfer->frbuffers + 0; temp.shortpkt = temp.len ? 1 : 0; /* check for last frame */ if (xfer->nframes == 1) { /* no STATUS stage yet, SETUP is last */ if (xfer->flags_int.control_act) { temp.last_frame = 1; temp.setup_alt_next = 0; } } uhci_setup_standard_chain_sub(&temp); } x = 1; } else { x = 0; } while (x != xfer->nframes) { /* DATA0 / DATA1 message */ temp.len = xfer->frlengths[x]; temp.ml.buf_pc = xfer->frbuffers + x; x++; if (x == xfer->nframes) { if (xfer->flags_int.control_xfr) { /* no STATUS stage yet, DATA is last */ if (xfer->flags_int.control_act) { temp.last_frame = 1; temp.setup_alt_next = 0; } } else { temp.last_frame = 1; temp.setup_alt_next = 0; } } /* * Keep previous data toggle, * device address and endpoint number: */ temp.td_token &= htole32(UHCI_TD_SET_DEVADDR(0x7F) | UHCI_TD_SET_ENDPT(0xF) | UHCI_TD_SET_DT(1)); if (temp.len == 0) { /* make sure that we send an USB packet */ temp.shortpkt = 0; } else { /* regular data transfer */ temp.shortpkt = (xfer->flags.force_short_xfer) ? 0 : 1; } /* set endpoint direction */ temp.td_token |= (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) ? htole32(UHCI_TD_PID_IN) : htole32(UHCI_TD_PID_OUT); uhci_setup_standard_chain_sub(&temp); } /* check if we should append a status stage */ if (xfer->flags_int.control_xfr && !xfer->flags_int.control_act) { /* * send a DATA1 message and reverse the current endpoint * direction */ temp.td_token &= htole32(UHCI_TD_SET_DEVADDR(0x7F) | UHCI_TD_SET_ENDPT(0xF) | UHCI_TD_SET_DT(1)); temp.td_token |= (UE_GET_DIR(xfer->endpointno) == UE_DIR_OUT) ? htole32(UHCI_TD_PID_IN | UHCI_TD_SET_DT(1)) : htole32(UHCI_TD_PID_OUT | UHCI_TD_SET_DT(1)); temp.len = 0; temp.ml.buf_pc = NULL; temp.shortpkt = 0; temp.last_frame = 1; temp.setup_alt_next = 0; uhci_setup_standard_chain_sub(&temp); } td = temp.td; /* Ensure that last TD is terminating: */ td->td_next = htole32(UHCI_PTR_T); /* set interrupt bit */ td->td_status |= htole32(UHCI_TD_IOC); usb_pc_cpu_flush(td->page_cache); /* must have at least one frame! */ xfer->td_transfer_last = td; #ifdef USB_DEBUG if (uhcidebug > 8) { DPRINTF("nexttog=%d; data before transfer:\n", xfer->endpoint->toggle_next); uhci_dump_tds(xfer->td_transfer_first); } #endif return (xfer->td_transfer_first); } /* NOTE: "done" can be run two times in a row, * from close and from interrupt */ static void uhci_device_done(struct usb_xfer *xfer, usb_error_t error) { const struct usb_pipe_methods *methods = xfer->endpoint->methods; uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); uhci_qh_t *qh; USB_BUS_LOCK_ASSERT(&sc->sc_bus); DPRINTFN(2, "xfer=%p, endpoint=%p, error=%d\n", xfer, xfer->endpoint, error); qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; if (qh) { usb_pc_cpu_invalidate(qh->page_cache); } if (xfer->flags_int.bandwidth_reclaimed) { xfer->flags_int.bandwidth_reclaimed = 0; uhci_rem_loop(sc); } if (methods == &uhci_device_bulk_methods) { UHCI_REMOVE_QH(qh, sc->sc_bulk_p_last); } if (methods == &uhci_device_ctrl_methods) { if (xfer->xroot->udev->speed == USB_SPEED_LOW) { UHCI_REMOVE_QH(qh, sc->sc_ls_ctl_p_last); } else { UHCI_REMOVE_QH(qh, sc->sc_fs_ctl_p_last); } } if (methods == &uhci_device_intr_methods) { UHCI_REMOVE_QH(qh, sc->sc_intr_p_last[xfer->qh_pos]); } /* * Only finish isochronous transfers once * which will update "xfer->frlengths". */ if (xfer->td_transfer_first && xfer->td_transfer_last) { if (methods == &uhci_device_isoc_methods) { uhci_isoc_done(sc, xfer); } xfer->td_transfer_first = NULL; xfer->td_transfer_last = NULL; } /* dequeue transfer and start next transfer */ usbd_transfer_done(xfer, error); } /*------------------------------------------------------------------------* * uhci bulk support *------------------------------------------------------------------------*/ static void uhci_device_bulk_open(struct usb_xfer *xfer) { return; } static void uhci_device_bulk_close(struct usb_xfer *xfer) { uhci_device_done(xfer, USB_ERR_CANCELLED); } static void uhci_device_bulk_enter(struct usb_xfer *xfer) { return; } static void uhci_device_bulk_start(struct usb_xfer *xfer) { uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); uhci_td_t *td; uhci_qh_t *qh; /* setup TD's */ td = uhci_setup_standard_chain(xfer); /* setup QH */ qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; qh->e_next = td; qh->qh_e_next = td->td_self; if (xfer->xroot->udev->flags.self_suspended == 0) { UHCI_APPEND_QH(qh, sc->sc_bulk_p_last); uhci_add_loop(sc); xfer->flags_int.bandwidth_reclaimed = 1; } else { usb_pc_cpu_flush(qh->page_cache); } /* put transfer on interrupt queue */ uhci_transfer_intr_enqueue(xfer); } static const struct usb_pipe_methods uhci_device_bulk_methods = { .open = uhci_device_bulk_open, .close = uhci_device_bulk_close, .enter = uhci_device_bulk_enter, .start = uhci_device_bulk_start, }; /*------------------------------------------------------------------------* * uhci control support *------------------------------------------------------------------------*/ static void uhci_device_ctrl_open(struct usb_xfer *xfer) { return; } static void uhci_device_ctrl_close(struct usb_xfer *xfer) { uhci_device_done(xfer, USB_ERR_CANCELLED); } static void uhci_device_ctrl_enter(struct usb_xfer *xfer) { return; } static void uhci_device_ctrl_start(struct usb_xfer *xfer) { uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); uhci_qh_t *qh; uhci_td_t *td; /* setup TD's */ td = uhci_setup_standard_chain(xfer); /* setup QH */ qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; qh->e_next = td; qh->qh_e_next = td->td_self; /* * NOTE: some devices choke on bandwidth- reclamation for control * transfers */ if (xfer->xroot->udev->flags.self_suspended == 0) { if (xfer->xroot->udev->speed == USB_SPEED_LOW) { UHCI_APPEND_QH(qh, sc->sc_ls_ctl_p_last); } else { UHCI_APPEND_QH(qh, sc->sc_fs_ctl_p_last); } } else { usb_pc_cpu_flush(qh->page_cache); } /* put transfer on interrupt queue */ uhci_transfer_intr_enqueue(xfer); } static const struct usb_pipe_methods uhci_device_ctrl_methods = { .open = uhci_device_ctrl_open, .close = uhci_device_ctrl_close, .enter = uhci_device_ctrl_enter, .start = uhci_device_ctrl_start, }; /*------------------------------------------------------------------------* * uhci interrupt support *------------------------------------------------------------------------*/ static void uhci_device_intr_open(struct usb_xfer *xfer) { uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); uint16_t best; uint16_t bit; uint16_t x; best = 0; bit = UHCI_IFRAMELIST_COUNT / 2; while (bit) { if (xfer->interval >= bit) { x = bit; best = bit; while (x & bit) { if (sc->sc_intr_stat[x] < sc->sc_intr_stat[best]) { best = x; } x++; } break; } bit >>= 1; } sc->sc_intr_stat[best]++; xfer->qh_pos = best; DPRINTFN(3, "best=%d interval=%d\n", best, xfer->interval); } static void uhci_device_intr_close(struct usb_xfer *xfer) { uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); sc->sc_intr_stat[xfer->qh_pos]--; uhci_device_done(xfer, USB_ERR_CANCELLED); } static void uhci_device_intr_enter(struct usb_xfer *xfer) { return; } static void uhci_device_intr_start(struct usb_xfer *xfer) { uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); uhci_qh_t *qh; uhci_td_t *td; /* setup TD's */ td = uhci_setup_standard_chain(xfer); /* setup QH */ qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; qh->e_next = td; qh->qh_e_next = td->td_self; if (xfer->xroot->udev->flags.self_suspended == 0) { /* enter QHs into the controller data structures */ UHCI_APPEND_QH(qh, sc->sc_intr_p_last[xfer->qh_pos]); } else { usb_pc_cpu_flush(qh->page_cache); } /* put transfer on interrupt queue */ uhci_transfer_intr_enqueue(xfer); } static const struct usb_pipe_methods uhci_device_intr_methods = { .open = uhci_device_intr_open, .close = uhci_device_intr_close, .enter = uhci_device_intr_enter, .start = uhci_device_intr_start, }; /*------------------------------------------------------------------------* * uhci isochronous support *------------------------------------------------------------------------*/ static void uhci_device_isoc_open(struct usb_xfer *xfer) { uhci_td_t *td; uint32_t td_token; uint8_t ds; td_token = (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) ? UHCI_TD_IN(0, xfer->endpointno, xfer->address, 0) : UHCI_TD_OUT(0, xfer->endpointno, xfer->address, 0); td_token = htole32(td_token); /* initialize all TD's */ for (ds = 0; ds != 2; ds++) { for (td = xfer->td_start[ds]; td; td = td->obj_next) { /* mark TD as inactive */ td->td_status = htole32(UHCI_TD_IOS); td->td_token = td_token; usb_pc_cpu_flush(td->page_cache); } } } static void uhci_device_isoc_close(struct usb_xfer *xfer) { uhci_device_done(xfer, USB_ERR_CANCELLED); } static void uhci_device_isoc_enter(struct usb_xfer *xfer) { struct uhci_mem_layout ml; uhci_softc_t *sc = UHCI_BUS2SC(xfer->xroot->bus); uint32_t nframes; uint32_t temp; uint32_t *plen; #ifdef USB_DEBUG uint8_t once = 1; #endif uhci_td_t *td; uhci_td_t *td_last = NULL; uhci_td_t **pp_last; DPRINTFN(6, "xfer=%p next=%d nframes=%d\n", xfer, xfer->endpoint->isoc_next, xfer->nframes); nframes = UREAD2(sc, UHCI_FRNUM); temp = (nframes - xfer->endpoint->isoc_next) & (UHCI_VFRAMELIST_COUNT - 1); if ((xfer->endpoint->is_synced == 0) || (temp < xfer->nframes)) { /* * If there is data underflow or the pipe queue is empty we * schedule the transfer a few frames ahead of the current * frame position. Else two isochronous transfers might * overlap. */ xfer->endpoint->isoc_next = (nframes + 3) & (UHCI_VFRAMELIST_COUNT - 1); xfer->endpoint->is_synced = 1; DPRINTFN(3, "start next=%d\n", xfer->endpoint->isoc_next); } /* * compute how many milliseconds the insertion is ahead of the * current frame position: */ temp = (xfer->endpoint->isoc_next - nframes) & (UHCI_VFRAMELIST_COUNT - 1); /* * pre-compute when the isochronous transfer will be finished: */ xfer->isoc_time_complete = usb_isoc_time_expand(&sc->sc_bus, nframes) + temp + xfer->nframes; /* get the real number of frames */ nframes = xfer->nframes; uhci_mem_layout_init(&ml, xfer); plen = xfer->frlengths; /* toggle the DMA set we are using */ xfer->flags_int.curr_dma_set ^= 1; /* get next DMA set */ td = xfer->td_start[xfer->flags_int.curr_dma_set]; xfer->td_transfer_first = td; pp_last = &sc->sc_isoc_p_last[xfer->endpoint->isoc_next]; /* store starting position */ xfer->qh_pos = xfer->endpoint->isoc_next; while (nframes--) { if (td == NULL) { panic("%s:%d: out of TD's\n", __func__, __LINE__); } if (pp_last >= &sc->sc_isoc_p_last[UHCI_VFRAMELIST_COUNT]) { pp_last = &sc->sc_isoc_p_last[0]; } if (*plen > xfer->max_frame_size) { #ifdef USB_DEBUG if (once) { once = 0; kprintf("%s: frame length(%d) exceeds %d " "bytes (frame truncated)\n", __func__, *plen, xfer->max_frame_size); } #endif *plen = xfer->max_frame_size; } /* reuse td_token from last transfer */ td->td_token &= htole32(~UHCI_TD_MAXLEN_MASK); td->td_token |= htole32(UHCI_TD_SET_MAXLEN(*plen)); td->len = *plen; if (td->len == 0) { /* * Do not call "uhci_mem_layout_fixup()" when the * length is zero! */ td->td_buffer = 0; td->fix_pc = NULL; } else { /* fill out buffer pointer and do fixup, if any */ uhci_mem_layout_fixup(&ml, td); } /* update status */ if (nframes == 0) { td->td_status = htole32 (UHCI_TD_ZERO_ACTLEN (UHCI_TD_SET_ERRCNT(0) | UHCI_TD_ACTIVE | UHCI_TD_IOS | UHCI_TD_IOC)); } else { td->td_status = htole32 (UHCI_TD_ZERO_ACTLEN (UHCI_TD_SET_ERRCNT(0) | UHCI_TD_ACTIVE | UHCI_TD_IOS)); } usb_pc_cpu_flush(td->page_cache); #ifdef USB_DEBUG if (uhcidebug > 5) { DPRINTF("TD %d\n", nframes); uhci_dump_td(td); } #endif /* insert TD into schedule */ UHCI_APPEND_TD(td, *pp_last); pp_last++; plen++; td_last = td; td = td->obj_next; } xfer->td_transfer_last = td_last; /* update isoc_next */ xfer->endpoint->isoc_next = (pp_last - &sc->sc_isoc_p_last[0]) & (UHCI_VFRAMELIST_COUNT - 1); } static void uhci_device_isoc_start(struct usb_xfer *xfer) { /* put transfer on interrupt queue */ uhci_transfer_intr_enqueue(xfer); } static const struct usb_pipe_methods uhci_device_isoc_methods = { .open = uhci_device_isoc_open, .close = uhci_device_isoc_close, .enter = uhci_device_isoc_enter, .start = uhci_device_isoc_start, }; /*------------------------------------------------------------------------* * uhci root control support *------------------------------------------------------------------------* * Simulate a hardware hub by handling all the necessary requests. *------------------------------------------------------------------------*/ static const struct usb_device_descriptor uhci_devd = { sizeof(struct usb_device_descriptor), UDESC_DEVICE, /* type */ {0x00, 0x01}, /* USB version */ UDCLASS_HUB, /* class */ UDSUBCLASS_HUB, /* subclass */ UDPROTO_FSHUB, /* protocol */ 64, /* max packet */ {0}, {0}, {0x00, 0x01}, /* device id */ 1, 2, 0, /* string indicies */ 1 /* # of configurations */ }; static const struct uhci_config_desc uhci_confd = { .confd = { .bLength = sizeof(struct usb_config_descriptor), .bDescriptorType = UDESC_CONFIG, .wTotalLength[0] = sizeof(uhci_confd), .bNumInterface = 1, .bConfigurationValue = 1, .iConfiguration = 0, .bmAttributes = UC_SELF_POWERED, .bMaxPower = 0 /* max power */ }, .ifcd = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = UDESC_INTERFACE, .bNumEndpoints = 1, .bInterfaceClass = UICLASS_HUB, .bInterfaceSubClass = UISUBCLASS_HUB, .bInterfaceProtocol = UIPROTO_FSHUB, }, .endpd = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = UDESC_ENDPOINT, .bEndpointAddress = UE_DIR_IN | UHCI_INTR_ENDPT, .bmAttributes = UE_INTERRUPT, .wMaxPacketSize[0] = 8, /* max packet (63 ports) */ .bInterval = 255, }, }; static const struct usb_hub_descriptor_min uhci_hubd_piix = { .bDescLength = sizeof(uhci_hubd_piix), .bDescriptorType = UDESC_HUB, .bNbrPorts = 2, .wHubCharacteristics = {UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL, 0}, .bPwrOn2PwrGood = 50, }; /* * The USB hub protocol requires that SET_FEATURE(PORT_RESET) also * enables the port, and also states that SET_FEATURE(PORT_ENABLE) * should not be used by the USB subsystem. As we cannot issue a * SET_FEATURE(PORT_ENABLE) externally, we must ensure that the port * will be enabled as part of the reset. * * On the VT83C572, the port cannot be successfully enabled until the * outstanding "port enable change" and "connection status change" * events have been reset. */ static usb_error_t uhci_portreset(uhci_softc_t *sc, uint16_t index) { uint16_t port; uint16_t x; uint8_t lim; if (index == 1) port = UHCI_PORTSC1; else if (index == 2) port = UHCI_PORTSC2; else return (USB_ERR_IOERROR); /* * Before we do anything, turn on SOF messages on the USB * BUS. Some USB devices do not cope without them! */ uhci_restart(sc); x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_PR); usb_pause_mtx(&sc->sc_bus.bus_lock, USB_MS_TO_TICKS(usb_port_root_reset_delay)); DPRINTFN(4, "uhci port %d reset, status0 = 0x%04x\n", index, UREAD2(sc, port)); x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x & ~UHCI_PORTSC_PR); lockmgr(&sc->sc_bus.bus_lock, LK_RELEASE); /* * This delay needs to be exactly 100us, else some USB devices * fail to attach! */ DELAY(100); lockmgr(&sc->sc_bus.bus_lock, LK_EXCLUSIVE); DPRINTFN(4, "uhci port %d reset, status1 = 0x%04x\n", index, UREAD2(sc, port)); x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_PE); for (lim = 0; lim < 12; lim++) { usb_pause_mtx(&sc->sc_bus.bus_lock, USB_MS_TO_TICKS(usb_port_reset_delay)); x = UREAD2(sc, port); DPRINTFN(4, "uhci port %d iteration %u, status = 0x%04x\n", index, lim, x); if (!(x & UHCI_PORTSC_CCS)) { /* * No device is connected (or was disconnected * during reset). Consider the port reset. * The delay must be long enough to ensure on * the initial iteration that the device * connection will have been registered. 50ms * appears to be sufficient, but 20ms is not. */ DPRINTFN(4, "uhci port %d loop %u, device detached\n", index, lim); goto done; } if (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)) { /* * Port enabled changed and/or connection * status changed were set. Reset either or * both raised flags (by writing a 1 to that * bit), and wait again for state to settle. */ UWRITE2(sc, port, URWMASK(x) | (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC))); continue; } if (x & UHCI_PORTSC_PE) { /* port is enabled */ goto done; } UWRITE2(sc, port, URWMASK(x) | UHCI_PORTSC_PE); } DPRINTFN(2, "uhci port %d reset timed out\n", index); return (USB_ERR_TIMEOUT); done: DPRINTFN(4, "uhci port %d reset, status2 = 0x%04x\n", index, UREAD2(sc, port)); sc->sc_isreset = 1; return (USB_ERR_NORMAL_COMPLETION); } static usb_error_t uhci_roothub_exec(struct usb_device *udev, struct usb_device_request *req, const void **pptr, uint16_t *plength) { uhci_softc_t *sc = UHCI_BUS2SC(udev->bus); const void *ptr; const char *str_ptr; uint16_t x; uint16_t port; uint16_t value; uint16_t index; uint16_t status; uint16_t change; uint16_t len; usb_error_t err; USB_BUS_LOCK_ASSERT(&sc->sc_bus); /* buffer reset */ ptr = (const void *)&sc->sc_hub_desc.temp; len = 0; err = 0; value = UGETW(req->wValue); index = UGETW(req->wIndex); DPRINTFN(3, "type=0x%02x request=0x%02x wLen=0x%04x " "wValue=0x%04x wIndex=0x%04x\n", req->bmRequestType, req->bRequest, UGETW(req->wLength), value, index); #define C(x,y) ((x) | ((y) << 8)) switch (C(req->bRequest, req->bmRequestType)) { case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE): case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE): case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT): /* * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops * for the integrated root hub. */ break; case C(UR_GET_CONFIG, UT_READ_DEVICE): len = 1; sc->sc_hub_desc.temp[0] = sc->sc_conf; break; case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE): switch (value >> 8) { case UDESC_DEVICE: if ((value & 0xff) != 0) { err = USB_ERR_IOERROR; goto done; } len = sizeof(uhci_devd); ptr = (const void *)&uhci_devd; break; case UDESC_CONFIG: if ((value & 0xff) != 0) { err = USB_ERR_IOERROR; goto done; } len = sizeof(uhci_confd); ptr = (const void *)&uhci_confd; break; case UDESC_STRING: switch (value & 0xff) { case 0: /* Language table */ str_ptr = "\001"; break; case 1: /* Vendor */ str_ptr = sc->sc_vendor; break; case 2: /* Product */ str_ptr = "UHCI root HUB"; break; default: str_ptr = ""; break; } len = usb_make_str_desc (sc->sc_hub_desc.temp, sizeof(sc->sc_hub_desc.temp), str_ptr); break; default: err = USB_ERR_IOERROR; goto done; } break; case C(UR_GET_INTERFACE, UT_READ_INTERFACE): len = 1; sc->sc_hub_desc.temp[0] = 0; break; case C(UR_GET_STATUS, UT_READ_DEVICE): len = 2; USETW(sc->sc_hub_desc.stat.wStatus, UDS_SELF_POWERED); break; case C(UR_GET_STATUS, UT_READ_INTERFACE): case C(UR_GET_STATUS, UT_READ_ENDPOINT): len = 2; USETW(sc->sc_hub_desc.stat.wStatus, 0); break; case C(UR_SET_ADDRESS, UT_WRITE_DEVICE): if (value >= UHCI_MAX_DEVICES) { err = USB_ERR_IOERROR; goto done; } sc->sc_addr = value; break; case C(UR_SET_CONFIG, UT_WRITE_DEVICE): if ((value != 0) && (value != 1)) { err = USB_ERR_IOERROR; goto done; } sc->sc_conf = value; break; case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE): break; case C(UR_SET_FEATURE, UT_WRITE_DEVICE): case C(UR_SET_FEATURE, UT_WRITE_INTERFACE): case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT): err = USB_ERR_IOERROR; goto done; case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE): break; case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT): break; /* Hub requests */ case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE): break; case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER): DPRINTFN(4, "UR_CLEAR_PORT_FEATURE " "port=%d feature=%d\n", index, value); if (index == 1) port = UHCI_PORTSC1; else if (index == 2) port = UHCI_PORTSC2; else { err = USB_ERR_IOERROR; goto done; } switch (value) { case UHF_PORT_ENABLE: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x & ~UHCI_PORTSC_PE); break; case UHF_PORT_SUSPEND: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x & ~(UHCI_PORTSC_SUSP)); break; case UHF_PORT_RESET: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x & ~UHCI_PORTSC_PR); break; case UHF_C_PORT_CONNECTION: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_CSC); break; case UHF_C_PORT_ENABLE: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_POEDC); break; case UHF_C_PORT_OVER_CURRENT: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_OCIC); break; case UHF_C_PORT_RESET: sc->sc_isreset = 0; err = USB_ERR_NORMAL_COMPLETION; goto done; case UHF_C_PORT_SUSPEND: sc->sc_isresumed &= ~(1 << index); break; case UHF_PORT_CONNECTION: case UHF_PORT_OVER_CURRENT: case UHF_PORT_POWER: case UHF_PORT_LOW_SPEED: default: err = USB_ERR_IOERROR; goto done; } break; case C(UR_GET_BUS_STATE, UT_READ_CLASS_OTHER): if (index == 1) port = UHCI_PORTSC1; else if (index == 2) port = UHCI_PORTSC2; else { err = USB_ERR_IOERROR; goto done; } len = 1; sc->sc_hub_desc.temp[0] = ((UREAD2(sc, port) & UHCI_PORTSC_LS) >> UHCI_PORTSC_LS_SHIFT); break; case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE): if ((value & 0xff) != 0) { err = USB_ERR_IOERROR; goto done; } len = sizeof(uhci_hubd_piix); ptr = (const void *)&uhci_hubd_piix; break; case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE): len = 16; memset(sc->sc_hub_desc.temp, 0, 16); break; case C(UR_GET_STATUS, UT_READ_CLASS_OTHER): if (index == 1) port = UHCI_PORTSC1; else if (index == 2) port = UHCI_PORTSC2; else { err = USB_ERR_IOERROR; goto done; } x = UREAD2(sc, port); status = change = 0; if (x & UHCI_PORTSC_CCS) status |= UPS_CURRENT_CONNECT_STATUS; if (x & UHCI_PORTSC_CSC) change |= UPS_C_CONNECT_STATUS; if (x & UHCI_PORTSC_PE) status |= UPS_PORT_ENABLED; if (x & UHCI_PORTSC_POEDC) change |= UPS_C_PORT_ENABLED; if (x & UHCI_PORTSC_OCI) status |= UPS_OVERCURRENT_INDICATOR; if (x & UHCI_PORTSC_OCIC) change |= UPS_C_OVERCURRENT_INDICATOR; if (x & UHCI_PORTSC_LSDA) status |= UPS_LOW_SPEED; if ((x & UHCI_PORTSC_PE) && (x & UHCI_PORTSC_RD)) { /* need to do a write back */ UWRITE2(sc, port, URWMASK(x)); /* wait 20ms for resume sequence to complete */ usb_pause_mtx(&sc->sc_bus.bus_lock, hz / 50); /* clear suspend and resume detect */ UWRITE2(sc, port, URWMASK(x) & ~(UHCI_PORTSC_RD | UHCI_PORTSC_SUSP)); /* wait a little bit */ usb_pause_mtx(&sc->sc_bus.bus_lock, hz / 500); sc->sc_isresumed |= (1 << index); } else if (x & UHCI_PORTSC_SUSP) { status |= UPS_SUSPEND; } status |= UPS_PORT_POWER; if (sc->sc_isresumed & (1 << index)) change |= UPS_C_SUSPEND; if (sc->sc_isreset) change |= UPS_C_PORT_RESET; USETW(sc->sc_hub_desc.ps.wPortStatus, status); USETW(sc->sc_hub_desc.ps.wPortChange, change); len = sizeof(sc->sc_hub_desc.ps); break; case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE): err = USB_ERR_IOERROR; goto done; case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE): break; case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER): if (index == 1) port = UHCI_PORTSC1; else if (index == 2) port = UHCI_PORTSC2; else { err = USB_ERR_IOERROR; goto done; } switch (value) { case UHF_PORT_ENABLE: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_PE); break; case UHF_PORT_SUSPEND: x = URWMASK(UREAD2(sc, port)); UWRITE2(sc, port, x | UHCI_PORTSC_SUSP); break; case UHF_PORT_RESET: err = uhci_portreset(sc, index); goto done; case UHF_PORT_POWER: /* pretend we turned on power */ err = USB_ERR_NORMAL_COMPLETION; goto done; case UHF_C_PORT_CONNECTION: case UHF_C_PORT_ENABLE: case UHF_C_PORT_OVER_CURRENT: case UHF_PORT_CONNECTION: case UHF_PORT_OVER_CURRENT: case UHF_PORT_LOW_SPEED: case UHF_C_PORT_SUSPEND: case UHF_C_PORT_RESET: default: err = USB_ERR_IOERROR; goto done; } break; default: err = USB_ERR_IOERROR; goto done; } done: *plength = len; *pptr = ptr; return (err); } /* * This routine is executed periodically and simulates interrupts from * the root controller interrupt pipe for port status change: */ static void uhci_root_intr(uhci_softc_t *sc) { DPRINTFN(21, "\n"); USB_BUS_LOCK_ASSERT(&sc->sc_bus); sc->sc_hub_idata[0] = 0; if (UREAD2(sc, UHCI_PORTSC1) & (UHCI_PORTSC_CSC | UHCI_PORTSC_OCIC | UHCI_PORTSC_RD)) { sc->sc_hub_idata[0] |= 1 << 1; } if (UREAD2(sc, UHCI_PORTSC2) & (UHCI_PORTSC_CSC | UHCI_PORTSC_OCIC | UHCI_PORTSC_RD)) { sc->sc_hub_idata[0] |= 1 << 2; } /* restart timer */ usb_callout_reset(&sc->sc_root_intr, hz, (void *)&uhci_root_intr, sc); if (sc->sc_hub_idata[0] != 0) { uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata, sizeof(sc->sc_hub_idata)); } } static void uhci_xfer_setup(struct usb_setup_params *parm) { struct usb_page_search page_info; struct usb_page_cache *pc; uhci_softc_t *sc; struct usb_xfer *xfer; void *last_obj; uint32_t ntd; uint32_t nqh; uint32_t nfixup; uint32_t n; uint16_t align; sc = UHCI_BUS2SC(parm->udev->bus); xfer = parm->curr_xfer; parm->hc_max_packet_size = 0x500; parm->hc_max_packet_count = 1; parm->hc_max_frame_size = 0x500; /* * compute ntd and nqh */ if (parm->methods == &uhci_device_ctrl_methods) { xfer->flags_int.bdma_enable = 1; xfer->flags_int.bdma_no_post_sync = 1; usbd_transfer_setup_sub(parm); /* see EHCI HC driver for proof of "ntd" formula */ nqh = 1; ntd = ((2 * xfer->nframes) + 1 /* STATUS */ + (xfer->max_data_length / xfer->max_frame_size)); } else if (parm->methods == &uhci_device_bulk_methods) { xfer->flags_int.bdma_enable = 1; xfer->flags_int.bdma_no_post_sync = 1; usbd_transfer_setup_sub(parm); nqh = 1; ntd = ((2 * xfer->nframes) + (xfer->max_data_length / xfer->max_frame_size)); } else if (parm->methods == &uhci_device_intr_methods) { xfer->flags_int.bdma_enable = 1; xfer->flags_int.bdma_no_post_sync = 1; usbd_transfer_setup_sub(parm); nqh = 1; ntd = ((2 * xfer->nframes) + (xfer->max_data_length / xfer->max_frame_size)); } else if (parm->methods == &uhci_device_isoc_methods) { xfer->flags_int.bdma_enable = 1; xfer->flags_int.bdma_no_post_sync = 1; usbd_transfer_setup_sub(parm); nqh = 0; ntd = xfer->nframes; } else { usbd_transfer_setup_sub(parm); nqh = 0; ntd = 0; } if (parm->err) { return; } /* * NOTE: the UHCI controller requires that * every packet must be contiguous on * the same USB memory page ! */ nfixup = (parm->bufsize / USB_PAGE_SIZE) + 1; /* * Compute a suitable power of two alignment * for our "max_frame_size" fixup buffer(s): */ align = xfer->max_frame_size; n = 0; while (align) { align >>= 1; n++; } /* check for power of two */ if (powerof2(xfer->max_frame_size)) { n--; } /* * We don't allow alignments of * less than 8 bytes: * * NOTE: Allocating using an aligment * of 1 byte has special meaning! */ if (n < 3) { n = 3; } align = (1 << n); if (usbd_transfer_setup_sub_malloc( parm, &pc, xfer->max_frame_size, align, nfixup)) { parm->err = USB_ERR_NOMEM; return; } xfer->buf_fixup = pc; alloc_dma_set: if (parm->err) { return; } last_obj = NULL; if (usbd_transfer_setup_sub_malloc( parm, &pc, sizeof(uhci_td_t), UHCI_TD_ALIGN, ntd)) { parm->err = USB_ERR_NOMEM; return; } if (parm->buf) { for (n = 0; n != ntd; n++) { uhci_td_t *td; usbd_get_page(pc + n, 0, &page_info); td = page_info.buffer; /* init TD */ if ((parm->methods == &uhci_device_bulk_methods) || (parm->methods == &uhci_device_ctrl_methods) || (parm->methods == &uhci_device_intr_methods)) { /* set depth first bit */ td->td_self = htole32(page_info.physaddr | UHCI_PTR_TD | UHCI_PTR_VF); } else { td->td_self = htole32(page_info.physaddr | UHCI_PTR_TD); } td->obj_next = last_obj; td->page_cache = pc + n; last_obj = td; usb_pc_cpu_flush(pc + n); } } xfer->td_start[xfer->flags_int.curr_dma_set] = last_obj; last_obj = NULL; if (usbd_transfer_setup_sub_malloc( parm, &pc, sizeof(uhci_qh_t), UHCI_QH_ALIGN, nqh)) { parm->err = USB_ERR_NOMEM; return; } if (parm->buf) { for (n = 0; n != nqh; n++) { uhci_qh_t *qh; usbd_get_page(pc + n, 0, &page_info); qh = page_info.buffer; /* init QH */ qh->qh_self = htole32(page_info.physaddr | UHCI_PTR_QH); qh->obj_next = last_obj; qh->page_cache = pc + n; last_obj = qh; usb_pc_cpu_flush(pc + n); } } xfer->qh_start[xfer->flags_int.curr_dma_set] = last_obj; if (!xfer->flags_int.curr_dma_set) { xfer->flags_int.curr_dma_set = 1; goto alloc_dma_set; } } static void uhci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc, struct usb_endpoint *ep) { uhci_softc_t *sc = UHCI_BUS2SC(udev->bus); DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d (%d)\n", ep, udev->address, edesc->bEndpointAddress, udev->flags.usb_mode, sc->sc_addr); if (udev->device_index != sc->sc_addr) { switch (edesc->bmAttributes & UE_XFERTYPE) { case UE_CONTROL: ep->methods = &uhci_device_ctrl_methods; break; case UE_INTERRUPT: ep->methods = &uhci_device_intr_methods; break; case UE_ISOCHRONOUS: if (udev->speed == USB_SPEED_FULL) { ep->methods = &uhci_device_isoc_methods; } break; case UE_BULK: ep->methods = &uhci_device_bulk_methods; break; default: /* do nothing */ break; } } } static void uhci_xfer_unsetup(struct usb_xfer *xfer) { return; } static void uhci_get_dma_delay(struct usb_device *udev, uint32_t *pus) { /* * Wait until hardware has finished any possible use of the * transfer descriptor(s) and QH */ *pus = (1125); /* microseconds */ } static void uhci_device_resume(struct usb_device *udev) { struct uhci_softc *sc = UHCI_BUS2SC(udev->bus); struct usb_xfer *xfer; const struct usb_pipe_methods *methods; uhci_qh_t *qh; DPRINTF("\n"); USB_BUS_LOCK(udev->bus); TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) { if (xfer->xroot->udev == udev) { methods = xfer->endpoint->methods; qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; if (methods == &uhci_device_bulk_methods) { UHCI_APPEND_QH(qh, sc->sc_bulk_p_last); uhci_add_loop(sc); xfer->flags_int.bandwidth_reclaimed = 1; } if (methods == &uhci_device_ctrl_methods) { if (xfer->xroot->udev->speed == USB_SPEED_LOW) { UHCI_APPEND_QH(qh, sc->sc_ls_ctl_p_last); } else { UHCI_APPEND_QH(qh, sc->sc_fs_ctl_p_last); } } if (methods == &uhci_device_intr_methods) { UHCI_APPEND_QH(qh, sc->sc_intr_p_last[xfer->qh_pos]); } } } USB_BUS_UNLOCK(udev->bus); return; } static void uhci_device_suspend(struct usb_device *udev) { struct uhci_softc *sc = UHCI_BUS2SC(udev->bus); struct usb_xfer *xfer; const struct usb_pipe_methods *methods; uhci_qh_t *qh; DPRINTF("\n"); USB_BUS_LOCK(udev->bus); TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) { if (xfer->xroot->udev == udev) { methods = xfer->endpoint->methods; qh = xfer->qh_start[xfer->flags_int.curr_dma_set]; if (xfer->flags_int.bandwidth_reclaimed) { xfer->flags_int.bandwidth_reclaimed = 0; uhci_rem_loop(sc); } if (methods == &uhci_device_bulk_methods) { UHCI_REMOVE_QH(qh, sc->sc_bulk_p_last); } if (methods == &uhci_device_ctrl_methods) { if (xfer->xroot->udev->speed == USB_SPEED_LOW) { UHCI_REMOVE_QH(qh, sc->sc_ls_ctl_p_last); } else { UHCI_REMOVE_QH(qh, sc->sc_fs_ctl_p_last); } } if (methods == &uhci_device_intr_methods) { UHCI_REMOVE_QH(qh, sc->sc_intr_p_last[xfer->qh_pos]); } } } USB_BUS_UNLOCK(udev->bus); return; } static void uhci_set_hw_power_sleep(struct usb_bus *bus, uint32_t state) { struct uhci_softc *sc = UHCI_BUS2SC(bus); switch (state) { case USB_HW_POWER_SUSPEND: case USB_HW_POWER_SHUTDOWN: uhci_suspend(sc); break; case USB_HW_POWER_RESUME: uhci_resume(sc); break; default: break; } } static void uhci_set_hw_power(struct usb_bus *bus) { struct uhci_softc *sc = UHCI_BUS2SC(bus); uint32_t flags; DPRINTF("\n"); USB_BUS_LOCK(bus); flags = bus->hw_power_state; /* * WARNING: Some FULL speed USB devices require periodic SOF * messages! If any USB devices are connected through the * UHCI, power save will be disabled! */ if (flags & (USB_HW_POWER_CONTROL | USB_HW_POWER_NON_ROOT_HUB | USB_HW_POWER_BULK | USB_HW_POWER_INTERRUPT | USB_HW_POWER_ISOC)) { DPRINTF("Some USB transfer is " "active on unit %u.\n", device_get_unit(sc->sc_bus.bdev)); uhci_restart(sc); } else { DPRINTF("Power save on unit %u.\n", device_get_unit(sc->sc_bus.bdev)); UHCICMD(sc, UHCI_CMD_MAXP); } USB_BUS_UNLOCK(bus); return; } static const struct usb_bus_methods uhci_bus_methods = { .endpoint_init = uhci_ep_init, .xfer_setup = uhci_xfer_setup, .xfer_unsetup = uhci_xfer_unsetup, .get_dma_delay = uhci_get_dma_delay, .device_resume = uhci_device_resume, .device_suspend = uhci_device_suspend, .set_hw_power = uhci_set_hw_power, .set_hw_power_sleep = uhci_set_hw_power_sleep, .roothub_exec = uhci_roothub_exec, .xfer_poll = uhci_do_poll, };