/* $NetBSD: ehci.c,v 1.229 2014/09/12 16:40:38 skrll Exp $ */ /* * Copyright (c) 2004-2012 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net), Charles M. Hannum, * Jeremy Morse (jeremy.morse@gmail.com), Jared D. McNeill * (jmcneill@invisible.ca) and Matthew R. Green (mrg@eterna.com.au). * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. * * The EHCI 1.0 spec can be found at * http://www.intel.com/technology/usb/spec.htm * and the USB 2.0 spec at * http://www.usb.org/developers/docs/ * */ /* * TODO: * 1) hold off explorations by companion controllers until ehci has started. * * 2) The hub driver needs to handle and schedule the transaction translator, * to assign place in frame where different devices get to go. See chapter * on hubs in USB 2.0 for details. * * 3) Command failures are not recovered correctly. */ #include __KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.229 2014/09/12 16:40:38 skrll Exp $"); #include "ohci.h" #include "uhci.h" #include "opt_usb.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef EHCI_DEBUG static int ehcidebug = 0; SYSCTL_SETUP(sysctl_hw_ehci_setup, "sysctl hw.ehci setup") { int err; const struct sysctlnode *rnode; const struct sysctlnode *cnode; err = sysctl_createv(clog, 0, NULL, &rnode, CTLFLAG_PERMANENT, CTLTYPE_NODE, "ehci", SYSCTL_DESCR("ehci global controls"), NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); if (err) goto fail; /* control debugging printfs */ err = sysctl_createv(clog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "debug", SYSCTL_DESCR("Enable debugging output"), NULL, 0, &ehcidebug, sizeof(ehcidebug), CTL_CREATE, CTL_EOL); if (err) goto fail; return; fail: aprint_error("%s: sysctl_createv failed (err = %d)\n", __func__, err); } #endif /* EHCI_DEBUG */ struct ehci_pipe { struct usbd_pipe pipe; int nexttoggle; ehci_soft_qh_t *sqh; union { ehci_soft_qtd_t *qtd; /* ehci_soft_itd_t *itd; */ } tail; union { /* Control pipe */ struct { usb_dma_t reqdma; } ctl; /* Interrupt pipe */ struct { u_int length; } intr; /* Bulk pipe */ struct { u_int length; } bulk; /* Iso pipe */ struct { u_int next_frame; u_int cur_xfers; } isoc; } u; }; Static usbd_status ehci_open(usbd_pipe_handle); Static void ehci_poll(struct usbd_bus *); Static void ehci_softintr(void *); Static int ehci_intr1(ehci_softc_t *); Static void ehci_waitintr(ehci_softc_t *, usbd_xfer_handle); Static void ehci_check_intr(ehci_softc_t *, struct ehci_xfer *); Static void ehci_check_qh_intr(ehci_softc_t *, struct ehci_xfer *); Static void ehci_check_itd_intr(ehci_softc_t *, struct ehci_xfer *); Static void ehci_idone(struct ehci_xfer *); Static void ehci_timeout(void *); Static void ehci_timeout_task(void *); Static void ehci_intrlist_timeout(void *); Static void ehci_doorbell(void *); Static void ehci_pcd(void *); Static usbd_status ehci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t); Static void ehci_freem(struct usbd_bus *, usb_dma_t *); Static usbd_xfer_handle ehci_allocx(struct usbd_bus *); Static void ehci_freex(struct usbd_bus *, usbd_xfer_handle); Static void ehci_get_lock(struct usbd_bus *, kmutex_t **); Static usbd_status ehci_root_ctrl_transfer(usbd_xfer_handle); Static usbd_status ehci_root_ctrl_start(usbd_xfer_handle); Static void ehci_root_ctrl_abort(usbd_xfer_handle); Static void ehci_root_ctrl_close(usbd_pipe_handle); Static void ehci_root_ctrl_done(usbd_xfer_handle); Static usbd_status ehci_root_intr_transfer(usbd_xfer_handle); Static usbd_status ehci_root_intr_start(usbd_xfer_handle); Static void ehci_root_intr_abort(usbd_xfer_handle); Static void ehci_root_intr_close(usbd_pipe_handle); Static void ehci_root_intr_done(usbd_xfer_handle); Static usbd_status ehci_device_ctrl_transfer(usbd_xfer_handle); Static usbd_status ehci_device_ctrl_start(usbd_xfer_handle); Static void ehci_device_ctrl_abort(usbd_xfer_handle); Static void ehci_device_ctrl_close(usbd_pipe_handle); Static void ehci_device_ctrl_done(usbd_xfer_handle); Static usbd_status ehci_device_bulk_transfer(usbd_xfer_handle); Static usbd_status ehci_device_bulk_start(usbd_xfer_handle); Static void ehci_device_bulk_abort(usbd_xfer_handle); Static void ehci_device_bulk_close(usbd_pipe_handle); Static void ehci_device_bulk_done(usbd_xfer_handle); Static usbd_status ehci_device_intr_transfer(usbd_xfer_handle); Static usbd_status ehci_device_intr_start(usbd_xfer_handle); Static void ehci_device_intr_abort(usbd_xfer_handle); Static void ehci_device_intr_close(usbd_pipe_handle); Static void ehci_device_intr_done(usbd_xfer_handle); Static usbd_status ehci_device_isoc_transfer(usbd_xfer_handle); Static usbd_status ehci_device_isoc_start(usbd_xfer_handle); Static void ehci_device_isoc_abort(usbd_xfer_handle); Static void ehci_device_isoc_close(usbd_pipe_handle); Static void ehci_device_isoc_done(usbd_xfer_handle); Static void ehci_device_clear_toggle(usbd_pipe_handle pipe); Static void ehci_noop(usbd_pipe_handle pipe); Static void ehci_disown(ehci_softc_t *, int, int); Static ehci_soft_qh_t *ehci_alloc_sqh(ehci_softc_t *); Static void ehci_free_sqh(ehci_softc_t *, ehci_soft_qh_t *); Static ehci_soft_qtd_t *ehci_alloc_sqtd(ehci_softc_t *); Static void ehci_free_sqtd(ehci_softc_t *, ehci_soft_qtd_t *); Static usbd_status ehci_alloc_sqtd_chain(struct ehci_pipe *, ehci_softc_t *, int, int, usbd_xfer_handle, ehci_soft_qtd_t **, ehci_soft_qtd_t **); Static void ehci_free_sqtd_chain(ehci_softc_t *, ehci_soft_qtd_t *, ehci_soft_qtd_t *); Static ehci_soft_itd_t *ehci_alloc_itd(ehci_softc_t *sc); Static void ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd); Static void ehci_rem_free_itd_chain(ehci_softc_t *sc, struct ehci_xfer *exfer); Static void ehci_abort_isoc_xfer(usbd_xfer_handle xfer, usbd_status status); Static usbd_status ehci_device_request(usbd_xfer_handle xfer); Static usbd_status ehci_device_setintr(ehci_softc_t *, ehci_soft_qh_t *, int ival); Static void ehci_add_qh(ehci_softc_t *, ehci_soft_qh_t *, ehci_soft_qh_t *); Static void ehci_rem_qh(ehci_softc_t *, ehci_soft_qh_t *, ehci_soft_qh_t *); Static void ehci_set_qh_qtd(ehci_soft_qh_t *, ehci_soft_qtd_t *); Static void ehci_sync_hc(ehci_softc_t *); Static void ehci_close_pipe(usbd_pipe_handle, ehci_soft_qh_t *); Static void ehci_abort_xfer(usbd_xfer_handle, usbd_status); #ifdef EHCI_DEBUG Static ehci_softc_t *theehci; void ehci_dump(void); #endif #ifdef EHCI_DEBUG Static void ehci_dump_regs(ehci_softc_t *); Static void ehci_dump_sqtds(ehci_soft_qtd_t *); Static void ehci_dump_sqtd(ehci_soft_qtd_t *); Static void ehci_dump_qtd(ehci_qtd_t *); Static void ehci_dump_sqh(ehci_soft_qh_t *); Static void ehci_dump_sitd(struct ehci_soft_itd *itd); Static void ehci_dump_itd(struct ehci_soft_itd *); Static void ehci_dump_exfer(struct ehci_xfer *); #endif #define EHCI_NULL htole32(EHCI_LINK_TERMINATE) #define EHCI_INTR_ENDPT 1 #define ehci_add_intr_list(sc, ex) \ TAILQ_INSERT_TAIL(&(sc)->sc_intrhead, (ex), inext); #define ehci_del_intr_list(sc, ex) \ do { \ TAILQ_REMOVE(&sc->sc_intrhead, (ex), inext); \ (ex)->inext.tqe_prev = NULL; \ } while (0) #define ehci_active_intr_list(ex) ((ex)->inext.tqe_prev != NULL) Static const struct usbd_bus_methods ehci_bus_methods = { .open_pipe = ehci_open, .soft_intr = ehci_softintr, .do_poll = ehci_poll, .allocm = ehci_allocm, .freem = ehci_freem, .allocx = ehci_allocx, .freex = ehci_freex, .get_lock = ehci_get_lock, .new_device = NULL, }; Static const struct usbd_pipe_methods ehci_root_ctrl_methods = { .transfer = ehci_root_ctrl_transfer, .start = ehci_root_ctrl_start, .abort = ehci_root_ctrl_abort, .close = ehci_root_ctrl_close, .cleartoggle = ehci_noop, .done = ehci_root_ctrl_done, }; Static const struct usbd_pipe_methods ehci_root_intr_methods = { .transfer = ehci_root_intr_transfer, .start = ehci_root_intr_start, .abort = ehci_root_intr_abort, .close = ehci_root_intr_close, .cleartoggle = ehci_noop, .done = ehci_root_intr_done, }; Static const struct usbd_pipe_methods ehci_device_ctrl_methods = { .transfer = ehci_device_ctrl_transfer, .start = ehci_device_ctrl_start, .abort = ehci_device_ctrl_abort, .close = ehci_device_ctrl_close, .cleartoggle = ehci_noop, .done = ehci_device_ctrl_done, }; Static const struct usbd_pipe_methods ehci_device_intr_methods = { .transfer = ehci_device_intr_transfer, .start = ehci_device_intr_start, .abort = ehci_device_intr_abort, .close = ehci_device_intr_close, .cleartoggle = ehci_device_clear_toggle, .done = ehci_device_intr_done, }; Static const struct usbd_pipe_methods ehci_device_bulk_methods = { .transfer = ehci_device_bulk_transfer, .start = ehci_device_bulk_start, .abort = ehci_device_bulk_abort, .close = ehci_device_bulk_close, .cleartoggle = ehci_device_clear_toggle, .done = ehci_device_bulk_done, }; Static const struct usbd_pipe_methods ehci_device_isoc_methods = { .transfer = ehci_device_isoc_transfer, .start = ehci_device_isoc_start, .abort = ehci_device_isoc_abort, .close = ehci_device_isoc_close, .cleartoggle = ehci_noop, .done = ehci_device_isoc_done, }; static const uint8_t revbits[EHCI_MAX_POLLRATE] = { 0x00,0x40,0x20,0x60,0x10,0x50,0x30,0x70,0x08,0x48,0x28,0x68,0x18,0x58,0x38,0x78, 0x04,0x44,0x24,0x64,0x14,0x54,0x34,0x74,0x0c,0x4c,0x2c,0x6c,0x1c,0x5c,0x3c,0x7c, 0x02,0x42,0x22,0x62,0x12,0x52,0x32,0x72,0x0a,0x4a,0x2a,0x6a,0x1a,0x5a,0x3a,0x7a, 0x06,0x46,0x26,0x66,0x16,0x56,0x36,0x76,0x0e,0x4e,0x2e,0x6e,0x1e,0x5e,0x3e,0x7e, 0x01,0x41,0x21,0x61,0x11,0x51,0x31,0x71,0x09,0x49,0x29,0x69,0x19,0x59,0x39,0x79, 0x05,0x45,0x25,0x65,0x15,0x55,0x35,0x75,0x0d,0x4d,0x2d,0x6d,0x1d,0x5d,0x3d,0x7d, 0x03,0x43,0x23,0x63,0x13,0x53,0x33,0x73,0x0b,0x4b,0x2b,0x6b,0x1b,0x5b,0x3b,0x7b, 0x07,0x47,0x27,0x67,0x17,0x57,0x37,0x77,0x0f,0x4f,0x2f,0x6f,0x1f,0x5f,0x3f,0x7f, }; usbd_status ehci_init(ehci_softc_t *sc) { u_int32_t vers, sparams, cparams, hcr; u_int i; usbd_status err; ehci_soft_qh_t *sqh; u_int ncomp; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); #ifdef EHCI_DEBUG theehci = sc; #endif mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED); cv_init(&sc->sc_softwake_cv, "ehciab"); cv_init(&sc->sc_doorbell, "ehcidi"); sc->sc_xferpool = pool_cache_init(sizeof(struct ehci_xfer), 0, 0, 0, "ehcixfer", NULL, IPL_USB, NULL, NULL, NULL); sc->sc_doorbell_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, ehci_doorbell, sc); KASSERT(sc->sc_doorbell_si != NULL); sc->sc_pcd_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, ehci_pcd, sc); KASSERT(sc->sc_pcd_si != NULL); sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH); vers = EREAD2(sc, EHCI_HCIVERSION); aprint_verbose("%s: EHCI version %x.%x\n", device_xname(sc->sc_dev), vers >> 8, vers & 0xff); sparams = EREAD4(sc, EHCI_HCSPARAMS); USBHIST_LOG(ehcidebug, "sparams=%#x", sparams, 0, 0, 0); sc->sc_npcomp = EHCI_HCS_N_PCC(sparams); ncomp = EHCI_HCS_N_CC(sparams); if (ncomp != sc->sc_ncomp) { aprint_verbose("%s: wrong number of companions (%d != %d)\n", device_xname(sc->sc_dev), ncomp, sc->sc_ncomp); #if NOHCI == 0 || NUHCI == 0 aprint_error("%s: ohci or uhci probably not configured\n", device_xname(sc->sc_dev)); #endif if (ncomp < sc->sc_ncomp) sc->sc_ncomp = ncomp; } if (sc->sc_ncomp > 0) { KASSERT(!(sc->sc_flags & EHCIF_ETTF)); aprint_normal("%s: companion controller%s, %d port%s each:", device_xname(sc->sc_dev), sc->sc_ncomp!=1 ? "s" : "", EHCI_HCS_N_PCC(sparams), EHCI_HCS_N_PCC(sparams)!=1 ? "s" : ""); for (i = 0; i < sc->sc_ncomp; i++) aprint_normal(" %s", device_xname(sc->sc_comps[i])); aprint_normal("\n"); } sc->sc_noport = EHCI_HCS_N_PORTS(sparams); cparams = EREAD4(sc, EHCI_HCCPARAMS); USBHIST_LOG(ehcidebug, "cparams=%#x", cparams, 0, 0, 0); sc->sc_hasppc = EHCI_HCS_PPC(sparams); if (EHCI_HCC_64BIT(cparams)) { /* MUST clear segment register if 64 bit capable. */ EWRITE4(sc, EHCI_CTRLDSSEGMENT, 0); } sc->sc_bus.usbrev = USBREV_2_0; usb_setup_reserve(sc->sc_dev, &sc->sc_dma_reserve, sc->sc_bus.dmatag, USB_MEM_RESERVE); /* Reset the controller */ USBHIST_LOG(ehcidebug, "resetting", 0, 0, 0, 0); EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */ usb_delay_ms(&sc->sc_bus, 1); EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET); for (i = 0; i < 100; i++) { usb_delay_ms(&sc->sc_bus, 1); hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET; if (!hcr) break; } if (hcr) { aprint_error("%s: reset timeout\n", device_xname(sc->sc_dev)); return (USBD_IOERROR); } if (sc->sc_vendor_init) sc->sc_vendor_init(sc); /* * If we are doing embedded transaction translation function, force * the controller to host mode. */ if (sc->sc_flags & EHCIF_ETTF) { uint32_t usbmode = EREAD4(sc, EHCI_USBMODE); usbmode &= ~EHCI_USBMODE_CM; usbmode |= EHCI_USBMODE_CM_HOST; EWRITE4(sc, EHCI_USBMODE, usbmode); } /* XXX need proper intr scheduling */ sc->sc_rand = 96; /* frame list size at default, read back what we got and use that */ switch (EHCI_CMD_FLS(EOREAD4(sc, EHCI_USBCMD))) { case 0: sc->sc_flsize = 1024; break; case 1: sc->sc_flsize = 512; break; case 2: sc->sc_flsize = 256; break; case 3: return (USBD_IOERROR); } err = usb_allocmem(&sc->sc_bus, sc->sc_flsize * sizeof(ehci_link_t), EHCI_FLALIGN_ALIGN, &sc->sc_fldma); if (err) return (err); USBHIST_LOG(ehcidebug, "flsize=%d", sc->sc_flsize, 0, 0, 0); sc->sc_flist = KERNADDR(&sc->sc_fldma, 0); for (i = 0; i < sc->sc_flsize; i++) { sc->sc_flist[i] = EHCI_NULL; } EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0)); sc->sc_softitds = kmem_zalloc(sc->sc_flsize * sizeof(ehci_soft_itd_t *), KM_SLEEP); if (sc->sc_softitds == NULL) return ENOMEM; LIST_INIT(&sc->sc_freeitds); TAILQ_INIT(&sc->sc_intrhead); /* Set up the bus struct. */ sc->sc_bus.methods = &ehci_bus_methods; sc->sc_bus.pipe_size = sizeof(struct ehci_pipe); sc->sc_eintrs = EHCI_NORMAL_INTRS; /* * Allocate the interrupt dummy QHs. These are arranged to give poll * intervals that are powers of 2 times 1ms. */ for (i = 0; i < EHCI_INTRQHS; i++) { sqh = ehci_alloc_sqh(sc); if (sqh == NULL) { err = USBD_NOMEM; goto bad1; } sc->sc_islots[i].sqh = sqh; } for (i = 0; i < EHCI_INTRQHS; i++) { sqh = sc->sc_islots[i].sqh; if (i == 0) { /* The last (1ms) QH terminates. */ sqh->qh.qh_link = EHCI_NULL; sqh->next = NULL; } else { /* Otherwise the next QH has half the poll interval */ sqh->next = sc->sc_islots[(i + 1) / 2 - 1].sqh; sqh->qh.qh_link = htole32(sqh->next->physaddr | EHCI_LINK_QH); } sqh->qh.qh_endp = htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH)); sqh->qh.qh_curqtd = EHCI_NULL; sqh->next = NULL; sqh->qh.qh_qtd.qtd_next = EHCI_NULL; sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED); sqh->sqtd = NULL; usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } /* Point the frame list at the last level (128ms). */ for (i = 0; i < sc->sc_flsize; i++) { int j; j = (i & ~(EHCI_MAX_POLLRATE-1)) | revbits[i & (EHCI_MAX_POLLRATE-1)]; sc->sc_flist[j] = htole32(EHCI_LINK_QH | sc->sc_islots[EHCI_IQHIDX(EHCI_IPOLLRATES - 1, i)].sqh->physaddr); } usb_syncmem(&sc->sc_fldma, 0, sc->sc_flsize * sizeof(ehci_link_t), BUS_DMASYNC_PREWRITE); /* Allocate dummy QH that starts the async list. */ sqh = ehci_alloc_sqh(sc); if (sqh == NULL) { err = USBD_NOMEM; goto bad1; } /* Fill the QH */ sqh->qh.qh_endp = htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL); sqh->qh.qh_link = htole32(sqh->physaddr | EHCI_LINK_QH); sqh->qh.qh_curqtd = EHCI_NULL; sqh->next = NULL; /* Fill the overlay qTD */ sqh->qh.qh_qtd.qtd_next = EHCI_NULL; sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED); sqh->sqtd = NULL; usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); #ifdef EHCI_DEBUG ehci_dump_sqh(sqh); #endif /* Point to async list */ sc->sc_async_head = sqh; EOWRITE4(sc, EHCI_ASYNCLISTADDR, sqh->physaddr | EHCI_LINK_QH); callout_init(&sc->sc_tmo_intrlist, CALLOUT_MPSAFE); /* Turn on controller */ EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_ITC_2 | /* 2 microframes interrupt delay */ (EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_FLS_M) | EHCI_CMD_ASE | EHCI_CMD_PSE | EHCI_CMD_RS); /* Take over port ownership */ EOWRITE4(sc, EHCI_CONFIGFLAG, EHCI_CONF_CF); for (i = 0; i < 100; i++) { usb_delay_ms(&sc->sc_bus, 1); hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; if (!hcr) break; } if (hcr) { aprint_error("%s: run timeout\n", device_xname(sc->sc_dev)); return (USBD_IOERROR); } /* Enable interrupts */ USBHIST_LOG(ehcidebug, "enabling interupts", 0, 0, 0, 0); EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); return (USBD_NORMAL_COMPLETION); #if 0 bad2: ehci_free_sqh(sc, sc->sc_async_head); #endif bad1: usb_freemem(&sc->sc_bus, &sc->sc_fldma); return (err); } int ehci_intr(void *v) { ehci_softc_t *sc = v; int ret = 0; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); if (sc == NULL) return 0; mutex_spin_enter(&sc->sc_intr_lock); if (sc->sc_dying || !device_has_power(sc->sc_dev)) goto done; /* If we get an interrupt while polling, then just ignore it. */ if (sc->sc_bus.use_polling) { u_int32_t intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); if (intrs) EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */ #ifdef DIAGNOSTIC USBHIST_LOGN(ehcidebug, 16, "ignored interrupt while polling", 0, 0, 0, 0); #endif goto done; } ret = ehci_intr1(sc); done: mutex_spin_exit(&sc->sc_intr_lock); return ret; } Static int ehci_intr1(ehci_softc_t *sc) { u_int32_t intrs, eintrs; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); /* In case the interrupt occurs before initialization has completed. */ if (sc == NULL) { #ifdef DIAGNOSTIC printf("ehci_intr1: sc == NULL\n"); #endif return (0); } KASSERT(mutex_owned(&sc->sc_intr_lock)); intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); if (!intrs) return (0); eintrs = intrs & sc->sc_eintrs; USBHIST_LOG(ehcidebug, "sc=%p intrs=%#x(%#x) eintrs=%#x", sc, intrs, EOREAD4(sc, EHCI_USBSTS), eintrs); if (!eintrs) return (0); EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */ sc->sc_bus.no_intrs++; if (eintrs & EHCI_STS_IAA) { USBHIST_LOG(ehcidebug, "door bell", 0, 0, 0, 0); kpreempt_disable(); KASSERT(sc->sc_doorbell_si != NULL); softint_schedule(sc->sc_doorbell_si); kpreempt_enable(); eintrs &= ~EHCI_STS_IAA; } if (eintrs & (EHCI_STS_INT | EHCI_STS_ERRINT)) { USBHIST_LOG(ehcidebug, "INT=%d ERRINT=%d", eintrs & EHCI_STS_INT ? 1 : 0, eintrs & EHCI_STS_ERRINT ? 1 : 0, 0, 0); usb_schedsoftintr(&sc->sc_bus); eintrs &= ~(EHCI_STS_INT | EHCI_STS_ERRINT); } if (eintrs & EHCI_STS_HSE) { printf("%s: unrecoverable error, controller halted\n", device_xname(sc->sc_dev)); /* XXX what else */ } if (eintrs & EHCI_STS_PCD) { kpreempt_disable(); KASSERT(sc->sc_pcd_si != NULL); softint_schedule(sc->sc_pcd_si); kpreempt_enable(); eintrs &= ~EHCI_STS_PCD; } if (eintrs != 0) { /* Block unprocessed interrupts. */ sc->sc_eintrs &= ~eintrs; EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); printf("%s: blocking intrs 0x%x\n", device_xname(sc->sc_dev), eintrs); } return (1); } Static void ehci_doorbell(void *addr) { ehci_softc_t *sc = addr; mutex_enter(&sc->sc_lock); cv_broadcast(&sc->sc_doorbell); mutex_exit(&sc->sc_lock); } Static void ehci_pcd(void *addr) { ehci_softc_t *sc = addr; usbd_xfer_handle xfer; u_char *p; int i, m; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); mutex_enter(&sc->sc_lock); xfer = sc->sc_intrxfer; if (xfer == NULL) { /* Just ignore the change. */ goto done; } p = KERNADDR(&xfer->dmabuf, 0); m = min(sc->sc_noport, xfer->length * 8 - 1); memset(p, 0, xfer->length); for (i = 1; i <= m; i++) { /* Pick out CHANGE bits from the status reg. */ if (EOREAD4(sc, EHCI_PORTSC(i)) & EHCI_PS_CLEAR) p[i/8] |= 1 << (i%8); if (i % 8 == 7) USBHIST_LOG(ehcidebug, "change(%d)=0x%02x", i / 8, p[i/8], 0, 0); } xfer->actlen = xfer->length; xfer->status = USBD_NORMAL_COMPLETION; usb_transfer_complete(xfer); done: mutex_exit(&sc->sc_lock); } Static void ehci_softintr(void *v) { struct usbd_bus *bus = v; ehci_softc_t *sc = bus->hci_private; struct ehci_xfer *ex, *nextex; KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); /* * The only explanation I can think of for why EHCI is as brain dead * as UHCI interrupt-wise is that Intel was involved in both. * An interrupt just tells us that something is done, we have no * clue what, so we need to scan through all active transfers. :-( */ for (ex = TAILQ_FIRST(&sc->sc_intrhead); ex; ex = nextex) { nextex = TAILQ_NEXT(ex, inext); ehci_check_intr(sc, ex); } /* Schedule a callout to catch any dropped transactions. */ if ((sc->sc_flags & EHCIF_DROPPED_INTR_WORKAROUND) && !TAILQ_EMPTY(&sc->sc_intrhead)) callout_reset(&sc->sc_tmo_intrlist, hz, ehci_intrlist_timeout, sc); if (sc->sc_softwake) { sc->sc_softwake = 0; cv_broadcast(&sc->sc_softwake_cv); } } /* Check for an interrupt. */ Static void ehci_check_intr(ehci_softc_t *sc, struct ehci_xfer *ex) { int attr; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "ex = %p", ex, 0, 0, 0); KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); attr = ex->xfer.pipe->endpoint->edesc->bmAttributes; if (UE_GET_XFERTYPE(attr) == UE_ISOCHRONOUS) ehci_check_itd_intr(sc, ex); else ehci_check_qh_intr(sc, ex); return; } Static void ehci_check_qh_intr(ehci_softc_t *sc, struct ehci_xfer *ex) { ehci_soft_qtd_t *sqtd, *lsqtd; __uint32_t status; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); if (ex->sqtdstart == NULL) { printf("ehci_check_qh_intr: not valid sqtd\n"); return; } lsqtd = ex->sqtdend; #ifdef DIAGNOSTIC if (lsqtd == NULL) { printf("ehci_check_qh_intr: lsqtd==0\n"); return; } #endif /* * If the last TD is still active we need to check whether there * is an error somewhere in the middle, or whether there was a * short packet (SPD and not ACTIVE). */ usb_syncmem(&lsqtd->dma, lsqtd->offs + offsetof(ehci_qtd_t, qtd_status), sizeof(lsqtd->qtd.qtd_status), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); status = le32toh(lsqtd->qtd.qtd_status); usb_syncmem(&lsqtd->dma, lsqtd->offs + offsetof(ehci_qtd_t, qtd_status), sizeof(lsqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD); if (status & EHCI_QTD_ACTIVE) { USBHIST_LOGN(ehcidebug, 10, "active ex=%p", ex, 0, 0, 0); for (sqtd = ex->sqtdstart; sqtd != lsqtd; sqtd=sqtd->nextqtd) { usb_syncmem(&sqtd->dma, sqtd->offs + offsetof(ehci_qtd_t, qtd_status), sizeof(sqtd->qtd.qtd_status), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); status = le32toh(sqtd->qtd.qtd_status); usb_syncmem(&sqtd->dma, sqtd->offs + offsetof(ehci_qtd_t, qtd_status), sizeof(sqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD); /* If there's an active QTD the xfer isn't done. */ if (status & EHCI_QTD_ACTIVE) break; /* Any kind of error makes the xfer done. */ if (status & EHCI_QTD_HALTED) goto done; /* Handle short packets */ if (EHCI_QTD_GET_BYTES(status) != 0) { usbd_pipe_handle pipe = ex->xfer.pipe; usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc; uint8_t xt = UE_GET_XFERTYPE(ed->bmAttributes); /* * If we get here for a control transfer then * we need to let the hardware complete the * status phase. That is, we're not done * quite yet. * * Otherwise, we're done. */ if (xt == UE_CONTROL) { break; } goto done; } } USBHIST_LOGN(ehcidebug, 10, "ex=%p std=%p still active", ex, ex->sqtdstart, 0, 0); return; } done: USBHIST_LOGN(ehcidebug, 10, "ex=%p done", ex, 0, 0, 0); callout_stop(&ex->xfer.timeout_handle); ehci_idone(ex); } Static void ehci_check_itd_intr(ehci_softc_t *sc, struct ehci_xfer *ex) { ehci_soft_itd_t *itd; int i; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); KASSERT(mutex_owned(&sc->sc_lock)); if (&ex->xfer != SIMPLEQ_FIRST(&ex->xfer.pipe->queue)) return; if (ex->itdstart == NULL) { printf("ehci_check_itd_intr: not valid itd\n"); return; } itd = ex->itdend; #ifdef DIAGNOSTIC if (itd == NULL) { printf("ehci_check_itd_intr: itdend == 0\n"); return; } #endif /* * check no active transfers in last itd, meaning we're finished */ usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_ctl), sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); for (i = 0; i < EHCI_ITD_NUFRAMES; i++) { if (le32toh(itd->itd.itd_ctl[i]) & EHCI_ITD_ACTIVE) break; } if (i == EHCI_ITD_NUFRAMES) { goto done; /* All 8 descriptors inactive, it's done */ } USBHIST_LOGN(ehcidebug, 10, "ex %p itd %p still active", ex, ex->itdstart, 0, 0); return; done: USBHIST_LOG(ehcidebug, "ex %p done", ex, 0, 0, 0); callout_stop(&ex->xfer.timeout_handle); ehci_idone(ex); } Static void ehci_idone(struct ehci_xfer *ex) { usbd_xfer_handle xfer = &ex->xfer; struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; struct ehci_softc *sc = xfer->pipe->device->bus->hci_private; ehci_soft_qtd_t *sqtd, *lsqtd; u_int32_t status = 0, nstatus = 0; int actlen; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); USBHIST_LOG(ehcidebug, "ex=%p", ex, 0, 0, 0); #ifdef DIAGNOSTIC if (ex->isdone) { printf("ehci_idone: ex=%p is done!\n", ex); #ifdef EHCI_DEBUG ehci_dump_exfer(ex); #endif return; } ex->isdone = 1; #endif if (xfer->status == USBD_CANCELLED || xfer->status == USBD_TIMEOUT) { USBHIST_LOG(ehcidebug, "aborted xfer=%p", xfer, 0, 0, 0); return; } USBHIST_LOG(ehcidebug, "xfer=%p, pipe=%p ready", xfer, epipe, 0, 0); #ifdef EHCI_DEBUG ehci_dump_sqtds(ex->sqtdstart); #endif /* The transfer is done, compute actual length and status. */ if (UE_GET_XFERTYPE(xfer->pipe->endpoint->edesc->bmAttributes) == UE_ISOCHRONOUS) { /* Isoc transfer */ struct ehci_soft_itd *itd; int i, nframes, len, uframes; nframes = 0; actlen = 0; i = xfer->pipe->endpoint->edesc->bInterval; uframes = min(1 << (i - 1), USB_UFRAMES_PER_FRAME); for (itd = ex->itdstart; itd != NULL; itd = itd->xfer_next) { usb_syncmem(&itd->dma,itd->offs + offsetof(ehci_itd_t,itd_ctl), sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); for (i = 0; i < EHCI_ITD_NUFRAMES; i += uframes) { /* XXX - driver didn't fill in the frame full * of uframes. This leads to scheduling * inefficiencies, but working around * this doubles complexity of tracking * an xfer. */ if (nframes >= xfer->nframes) break; status = le32toh(itd->itd.itd_ctl[i]); len = EHCI_ITD_GET_LEN(status); if (EHCI_ITD_GET_STATUS(status) != 0) len = 0; /*No valid data on error*/ xfer->frlengths[nframes++] = len; actlen += len; } if (nframes >= xfer->nframes) break; } xfer->actlen = actlen; xfer->status = USBD_NORMAL_COMPLETION; goto end; } /* Continue processing xfers using queue heads */ lsqtd = ex->sqtdend; actlen = 0; for (sqtd = ex->sqtdstart; sqtd != lsqtd->nextqtd; sqtd = sqtd->nextqtd) { usb_syncmem(&sqtd->dma, sqtd->offs, sizeof(sqtd->qtd), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); nstatus = le32toh(sqtd->qtd.qtd_status); if (nstatus & EHCI_QTD_ACTIVE) break; status = nstatus; if (EHCI_QTD_GET_PID(status) != EHCI_QTD_PID_SETUP) actlen += sqtd->len - EHCI_QTD_GET_BYTES(status); } /* * If there are left over TDs we need to update the toggle. * The default pipe doesn't need it since control transfers * start the toggle at 0 every time. * For a short transfer we need to update the toggle for the missing * packets within the qTD. */ if ((sqtd != lsqtd->nextqtd || EHCI_QTD_GET_BYTES(status)) && xfer->pipe->device->default_pipe != xfer->pipe) { USBHIST_LOG(ehcidebug, "toggle update status=0x%08x nstatus=0x%08x", status, nstatus, 0, 0); #if 0 ehci_dump_sqh(epipe->sqh); ehci_dump_sqtds(ex->sqtdstart); #endif epipe->nexttoggle = EHCI_QTD_GET_TOGGLE(nstatus); } USBHIST_LOG(ehcidebug, "len=%d actlen=%d status=0x%08x", xfer->length, actlen, status, 0); xfer->actlen = actlen; if (status & EHCI_QTD_HALTED) { #ifdef EHCI_DEBUG USBHIST_LOG(ehcidebug, "halted addr=%d endpt=0x%02x", xfer->pipe->device->address, xfer->pipe->endpoint->edesc->bEndpointAddress, 0, 0); USBHIST_LOG(ehcidebug, "cerr=%d pid=%d stat=%#x", EHCI_QTD_GET_CERR(status), EHCI_QTD_GET_PID(status), status, 0); USBHIST_LOG(ehcidebug, "ACTIVE =%d HALTED=%d BUFERR=%d BABBLE=%d", status & EHCI_QTD_ACTIVE ? 1 : 0, status & EHCI_QTD_HALTED ? 1 : 0, status & EHCI_QTD_BUFERR ? 1 : 0, status & EHCI_QTD_BABBLE ? 1 : 0); USBHIST_LOG(ehcidebug, "XACTERR=%d MISSED=%d SPLIT =%d PING =%d", status & EHCI_QTD_XACTERR ? 1 : 0, status & EHCI_QTD_MISSEDMICRO ? 1 : 0, status & EHCI_QTD_SPLITXSTATE ? 1 : 0, status & EHCI_QTD_PINGSTATE ? 1 : 0); ehci_dump_sqh(epipe->sqh); ehci_dump_sqtds(ex->sqtdstart); #endif /* low&full speed has an extra error flag */ if (EHCI_QH_GET_EPS(epipe->sqh->qh.qh_endp) != EHCI_QH_SPEED_HIGH) status &= EHCI_QTD_STATERRS | EHCI_QTD_PINGSTATE; else status &= EHCI_QTD_STATERRS; if (status == 0) /* no other errors means a stall */ { xfer->status = USBD_STALLED; } else { xfer->status = USBD_IOERROR; /* more info XXX */ } /* XXX need to reset TT on missed microframe */ if (status & EHCI_QTD_MISSEDMICRO) { printf("%s: missed microframe, TT reset not " "implemented, hub might be inoperational\n", device_xname(sc->sc_dev)); } } else { xfer->status = USBD_NORMAL_COMPLETION; } end: /* XXX transfer_complete memcpys out transfer data (for in endpoints) * during this call, before methods->done is called: dma sync required * beforehand? */ usb_transfer_complete(xfer); USBHIST_LOG(ehcidebug, "ex=%p done", ex, 0, 0, 0); } /* * Wait here until controller claims to have an interrupt. * Then call ehci_intr and return. Use timeout to avoid waiting * too long. */ Static void ehci_waitintr(ehci_softc_t *sc, usbd_xfer_handle xfer) { int timo; u_int32_t intrs; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); xfer->status = USBD_IN_PROGRESS; for (timo = xfer->timeout; timo >= 0; timo--) { usb_delay_ms(&sc->sc_bus, 1); if (sc->sc_dying) break; intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)) & sc->sc_eintrs; USBHIST_LOG(ehcidebug, "0x%04x", intrs, 0, 0, 0); #ifdef EHCI_DEBUG if (ehcidebug > 15) ehci_dump_regs(sc); #endif if (intrs) { mutex_spin_enter(&sc->sc_intr_lock); ehci_intr1(sc); mutex_spin_exit(&sc->sc_intr_lock); if (xfer->status != USBD_IN_PROGRESS) return; } } /* Timeout */ USBHIST_LOG(ehcidebug, "timeout", 0, 0, 0, 0); xfer->status = USBD_TIMEOUT; mutex_enter(&sc->sc_lock); usb_transfer_complete(xfer); mutex_exit(&sc->sc_lock); /* XXX should free TD */ } Static void ehci_poll(struct usbd_bus *bus) { ehci_softc_t *sc = bus->hci_private; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); #ifdef EHCI_DEBUG static int last; int new; new = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); if (new != last) { USBHIST_LOG(ehcidebug, "intrs=0x%04x", new, 0, 0, 0); last = new; } #endif if (EOREAD4(sc, EHCI_USBSTS) & sc->sc_eintrs) { mutex_spin_enter(&sc->sc_intr_lock); ehci_intr1(sc); mutex_spin_exit(&sc->sc_intr_lock); } } void ehci_childdet(device_t self, device_t child) { struct ehci_softc *sc = device_private(self); KASSERT(sc->sc_child == child); sc->sc_child = NULL; } int ehci_detach(struct ehci_softc *sc, int flags) { int rv = 0; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); if (sc->sc_child != NULL) rv = config_detach(sc->sc_child, flags); if (rv != 0) return (rv); callout_halt(&sc->sc_tmo_intrlist, NULL); callout_destroy(&sc->sc_tmo_intrlist); /* XXX free other data structures XXX */ if (sc->sc_softitds) kmem_free(sc->sc_softitds, sc->sc_flsize * sizeof(ehci_soft_itd_t *)); cv_destroy(&sc->sc_doorbell); cv_destroy(&sc->sc_softwake_cv); #if 0 /* XXX destroyed in ehci_pci.c as it controls ehci_intr access */ softint_disestablish(sc->sc_doorbell_si); softint_disestablish(sc->sc_pcd_si); mutex_destroy(&sc->sc_lock); mutex_destroy(&sc->sc_intr_lock); #endif pool_cache_destroy(sc->sc_xferpool); EOWRITE4(sc, EHCI_CONFIGFLAG, 0); return (rv); } int ehci_activate(device_t self, enum devact act) { struct ehci_softc *sc = device_private(self); switch (act) { case DVACT_DEACTIVATE: sc->sc_dying = 1; return 0; default: return EOPNOTSUPP; } } /* * Handle suspend/resume. * * We need to switch to polling mode here, because this routine is * called from an interrupt context. This is all right since we * are almost suspended anyway. * * Note that this power handler isn't to be registered directly; the * bus glue needs to call out to it. */ bool ehci_suspend(device_t dv, const pmf_qual_t *qual) { ehci_softc_t *sc = device_private(dv); int i; uint32_t cmd, hcr; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); mutex_spin_enter(&sc->sc_intr_lock); sc->sc_bus.use_polling++; mutex_spin_exit(&sc->sc_intr_lock); for (i = 1; i <= sc->sc_noport; i++) { cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; if ((cmd & EHCI_PS_PO) == 0 && (cmd & EHCI_PS_PE) == EHCI_PS_PE) EOWRITE4(sc, EHCI_PORTSC(i), cmd | EHCI_PS_SUSP); } sc->sc_cmd = EOREAD4(sc, EHCI_USBCMD); cmd = sc->sc_cmd & ~(EHCI_CMD_ASE | EHCI_CMD_PSE); EOWRITE4(sc, EHCI_USBCMD, cmd); for (i = 0; i < 100; i++) { hcr = EOREAD4(sc, EHCI_USBSTS) & (EHCI_STS_ASS | EHCI_STS_PSS); if (hcr == 0) break; usb_delay_ms(&sc->sc_bus, 1); } if (hcr != 0) printf("%s: reset timeout\n", device_xname(dv)); cmd &= ~EHCI_CMD_RS; EOWRITE4(sc, EHCI_USBCMD, cmd); for (i = 0; i < 100; i++) { hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; if (hcr == EHCI_STS_HCH) break; usb_delay_ms(&sc->sc_bus, 1); } if (hcr != EHCI_STS_HCH) printf("%s: config timeout\n", device_xname(dv)); mutex_spin_enter(&sc->sc_intr_lock); sc->sc_bus.use_polling--; mutex_spin_exit(&sc->sc_intr_lock); return true; } bool ehci_resume(device_t dv, const pmf_qual_t *qual) { ehci_softc_t *sc = device_private(dv); int i; uint32_t cmd, hcr; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); /* restore things in case the bios sucks */ EOWRITE4(sc, EHCI_CTRLDSSEGMENT, 0); EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0)); EOWRITE4(sc, EHCI_ASYNCLISTADDR, sc->sc_async_head->physaddr | EHCI_LINK_QH); EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs & ~EHCI_INTR_PCIE); EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd); hcr = 0; for (i = 1; i <= sc->sc_noport; i++) { cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; if ((cmd & EHCI_PS_PO) == 0 && (cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) { EOWRITE4(sc, EHCI_PORTSC(i), cmd | EHCI_PS_FPR); hcr = 1; } } if (hcr) { usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT); for (i = 1; i <= sc->sc_noport; i++) { cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; if ((cmd & EHCI_PS_PO) == 0 && (cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) EOWRITE4(sc, EHCI_PORTSC(i), cmd & ~EHCI_PS_FPR); } } EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd); EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); for (i = 0; i < 100; i++) { hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; if (hcr != EHCI_STS_HCH) break; usb_delay_ms(&sc->sc_bus, 1); } if (hcr == EHCI_STS_HCH) printf("%s: config timeout\n", device_xname(dv)); return true; } /* * Shut down the controller when the system is going down. */ bool ehci_shutdown(device_t self, int flags) { ehci_softc_t *sc = device_private(self); USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */ EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET); return true; } Static usbd_status ehci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size) { struct ehci_softc *sc = bus->hci_private; usbd_status err; err = usb_allocmem_flags(&sc->sc_bus, size, 0, dma, USBMALLOC_MULTISEG); #ifdef EHCI_DEBUG if (err) printf("ehci_allocm: usb_allocmem_flags()= %s (%d)\n", usbd_errstr(err), err); #endif if (err == USBD_NOMEM) err = usb_reserve_allocm(&sc->sc_dma_reserve, dma, size); #ifdef EHCI_DEBUG if (err) printf("ehci_allocm: usb_reserve_allocm()= %s (%d)\n", usbd_errstr(err), err); #endif return (err); } Static void ehci_freem(struct usbd_bus *bus, usb_dma_t *dma) { struct ehci_softc *sc = bus->hci_private; if (dma->block->flags & USB_DMA_RESERVE) { usb_reserve_freem(&sc->sc_dma_reserve, dma); return; } usb_freemem(&sc->sc_bus, dma); } Static usbd_xfer_handle ehci_allocx(struct usbd_bus *bus) { struct ehci_softc *sc = bus->hci_private; usbd_xfer_handle xfer; xfer = pool_cache_get(sc->sc_xferpool, PR_NOWAIT); if (xfer != NULL) { memset(xfer, 0, sizeof(struct ehci_xfer)); #ifdef DIAGNOSTIC EXFER(xfer)->isdone = 1; xfer->busy_free = XFER_BUSY; #endif } return (xfer); } Static void ehci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer) { struct ehci_softc *sc = bus->hci_private; #ifdef DIAGNOSTIC if (xfer->busy_free != XFER_BUSY) { printf("ehci_freex: xfer=%p not busy, 0x%08x\n", xfer, xfer->busy_free); } xfer->busy_free = XFER_FREE; if (!EXFER(xfer)->isdone) { printf("ehci_freex: !isdone\n"); } #endif pool_cache_put(sc->sc_xferpool, xfer); } Static void ehci_get_lock(struct usbd_bus *bus, kmutex_t **lock) { struct ehci_softc *sc = bus->hci_private; *lock = &sc->sc_lock; } Static void ehci_device_clear_toggle(usbd_pipe_handle pipe) { struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "epipe=%p status=0x%08x", epipe, epipe->sqh->qh.qh_qtd.qtd_status, 0, 0); #ifdef EHCI_DEBUG if (ehcidebug) usbd_dump_pipe(pipe); #endif epipe->nexttoggle = 0; } Static void ehci_noop(usbd_pipe_handle pipe) { } #ifdef EHCI_DEBUG /* * Unused function - this is meant to be called from a kernel * debugger. */ void ehci_dump(void) { ehci_softc_t *sc = theehci; int i; printf("cmd=0x%08x, sts=0x%08x, ien=0x%08x\n", EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS), EOREAD4(sc, EHCI_USBINTR)); printf("frindex=0x%08x ctrdsegm=0x%08x periodic=0x%08x async=0x%08x\n", EOREAD4(sc, EHCI_FRINDEX), EOREAD4(sc, EHCI_CTRLDSSEGMENT), EOREAD4(sc, EHCI_PERIODICLISTBASE), EOREAD4(sc, EHCI_ASYNCLISTADDR)); for (i = 1; i <= sc->sc_noport; i++) printf("port %d status=0x%08x\n", i, EOREAD4(sc, EHCI_PORTSC(i))); } Static void ehci_dump_regs(ehci_softc_t *sc) { int i; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "cmd = 0x%08x sts = 0x%08x ien = 0x%08x", EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS), EOREAD4(sc, EHCI_USBINTR), 0); USBHIST_LOG(ehcidebug, "frindex = 0x%08x ctrdsegm = 0x%08x periodic = 0x%08x " "async = 0x%08x", EOREAD4(sc, EHCI_FRINDEX), EOREAD4(sc, EHCI_CTRLDSSEGMENT), EOREAD4(sc, EHCI_PERIODICLISTBASE), EOREAD4(sc, EHCI_ASYNCLISTADDR)); for (i = 1; i <= sc->sc_noport; i += 2) { if (i == sc->sc_noport) { USBHIST_LOG(ehcidebug, "port %d status = 0x%08x", i, EOREAD4(sc, EHCI_PORTSC(i)), 0, 0); } else { USBHIST_LOG(ehcidebug, "port %d status = 0x%08x port %d status = 0x%08x", i, EOREAD4(sc, EHCI_PORTSC(i)), i+1, EOREAD4(sc, EHCI_PORTSC(i+1))); } } } #ifdef EHCI_DEBUG #define ehci_dump_link(link, type) do { \ USBHIST_LOG(ehcidebug, " link 0x%08x (T = %d):", \ link, \ link & EHCI_LINK_TERMINATE ? 1 : 0, 0, 0); \ if (type) { \ USBHIST_LOG(ehcidebug, \ " ITD = %d QH = %d SITD = %d FSTN = %d",\ EHCI_LINK_TYPE(link) == EHCI_LINK_ITD ? 1 : 0, \ EHCI_LINK_TYPE(link) == EHCI_LINK_QH ? 1 : 0, \ EHCI_LINK_TYPE(link) == EHCI_LINK_SITD ? 1 : 0, \ EHCI_LINK_TYPE(link) == EHCI_LINK_FSTN ? 1 : 0); \ } \ } while(0) #else #define ehci_dump_link(link, type) #endif Static void ehci_dump_sqtds(ehci_soft_qtd_t *sqtd) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); int i; uint32_t stop = 0; for (i = 0; sqtd && i < 20 && !stop; sqtd = sqtd->nextqtd, i++) { ehci_dump_sqtd(sqtd); usb_syncmem(&sqtd->dma, sqtd->offs + offsetof(ehci_qtd_t, qtd_next), sizeof(sqtd->qtd), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); stop = sqtd->qtd.qtd_next & htole32(EHCI_LINK_TERMINATE); usb_syncmem(&sqtd->dma, sqtd->offs + offsetof(ehci_qtd_t, qtd_next), sizeof(sqtd->qtd), BUS_DMASYNC_PREREAD); } if (sqtd) USBHIST_LOG(ehcidebug, "dump aborted, too many TDs", 0, 0, 0, 0); } Static void ehci_dump_sqtd(ehci_soft_qtd_t *sqtd) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); usb_syncmem(&sqtd->dma, sqtd->offs, sizeof(sqtd->qtd), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); USBHIST_LOGN(ehcidebug, 10, "QTD(%p) at 0x%08x:", sqtd, sqtd->physaddr, 0, 0); ehci_dump_qtd(&sqtd->qtd); usb_syncmem(&sqtd->dma, sqtd->offs, sizeof(sqtd->qtd), BUS_DMASYNC_PREREAD); } Static void ehci_dump_qtd(ehci_qtd_t *qtd) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); #ifdef USBHIST uint32_t s = le32toh(qtd->qtd_status); #endif USBHIST_LOGN(ehcidebug, 10, " next = 0x%08x altnext = 0x%08x status = 0x%08x", qtd->qtd_altnext, qtd->qtd_next, s, 0); USBHIST_LOGN(ehcidebug, 10, " toggle = %d ioc = %d bytes = %#x " "c_page = %#x", EHCI_QTD_GET_TOGGLE(s), EHCI_QTD_GET_IOC(s), EHCI_QTD_GET_BYTES(s), EHCI_QTD_GET_C_PAGE(s)); USBHIST_LOGN(ehcidebug, 10, " cerr = %d pid = %d stat = %x", EHCI_QTD_GET_CERR(s), EHCI_QTD_GET_PID(s), EHCI_QTD_GET_STATUS(s), 0); USBHIST_LOGN(ehcidebug, 10, "active =%d halted=%d buferr=%d babble=%d", s & EHCI_QTD_ACTIVE ? 1 : 0, s & EHCI_QTD_HALTED ? 1 : 0, s & EHCI_QTD_BUFERR ? 1 : 0, s & EHCI_QTD_BABBLE ? 1 : 0); USBHIST_LOGN(ehcidebug, 10, "xacterr=%d missed=%d split =%d ping =%d", s & EHCI_QTD_XACTERR ? 1 : 0, s & EHCI_QTD_MISSEDMICRO ? 1 : 0, s & EHCI_QTD_SPLITXSTATE ? 1 : 0, s & EHCI_QTD_PINGSTATE ? 1 : 0); USBHIST_LOGN(ehcidebug, 10, "buffer[0] = %#x buffer[1] = %#x " "buffer[2] = %#x buffer[3] = %#x", le32toh(qtd->qtd_buffer[0]), le32toh(qtd->qtd_buffer[1]), le32toh(qtd->qtd_buffer[2]), le32toh(qtd->qtd_buffer[3])); USBHIST_LOGN(ehcidebug, 10, "buffer[4] = %#x", le32toh(qtd->qtd_buffer[4]), 0, 0, 0); } Static void ehci_dump_sqh(ehci_soft_qh_t *sqh) { #ifdef USBHIST ehci_qh_t *qh = &sqh->qh; ehci_link_t link; #endif u_int32_t endp, endphub; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); USBHIST_LOGN(ehcidebug, 10, "QH(%p) at %#x:", sqh, sqh->physaddr, 0, 0); link = le32toh(qh->qh_link); ehci_dump_link(link, true); endp = le32toh(qh->qh_endp); USBHIST_LOGN(ehcidebug, 10, " endp = %#x", endp, 0, 0, 0); USBHIST_LOGN(ehcidebug, 10, " addr = 0x%02x inact = %d endpt = %d eps = %d", EHCI_QH_GET_ADDR(endp), EHCI_QH_GET_INACT(endp), EHCI_QH_GET_ENDPT(endp), EHCI_QH_GET_EPS(endp)); USBHIST_LOGN(ehcidebug, 10, " dtc = %d hrecl = %d", EHCI_QH_GET_DTC(endp), EHCI_QH_GET_HRECL(endp), 0, 0); USBHIST_LOGN(ehcidebug, 10, " ctl = %d nrl = %d mpl = %#x(%d)", EHCI_QH_GET_CTL(endp),EHCI_QH_GET_NRL(endp), EHCI_QH_GET_MPL(endp), EHCI_QH_GET_MPL(endp)); endphub = le32toh(qh->qh_endphub); USBHIST_LOGN(ehcidebug, 10, " endphub = %#x", endphub, 0, 0, 0); USBHIST_LOGN(ehcidebug, 10, " smask = 0x%02x cmask = 0x%02x", EHCI_QH_GET_SMASK(endphub), EHCI_QH_GET_CMASK(endphub), 1, 0); USBHIST_LOGN(ehcidebug, 10, " huba = 0x%02x port = %d mult = %d", EHCI_QH_GET_HUBA(endphub), EHCI_QH_GET_PORT(endphub), EHCI_QH_GET_MULT(endphub), 0); link = le32toh(qh->qh_curqtd); ehci_dump_link(link, false); USBHIST_LOGN(ehcidebug, 10, "Overlay qTD:", 0, 0, 0, 0); ehci_dump_qtd(&qh->qh_qtd); usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_PREREAD); } Static void ehci_dump_itd(struct ehci_soft_itd *itd) { ehci_isoc_trans_t t; ehci_isoc_bufr_ptr_t b, b2, b3; int i; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "ITD: next phys = %#x", itd->itd.itd_next, 0, 0, 0); for (i = 0; i < EHCI_ITD_NUFRAMES; i++) { t = le32toh(itd->itd.itd_ctl[i]); USBHIST_LOG(ehcidebug, "ITDctl %d: stat = %x len = %x", i, EHCI_ITD_GET_STATUS(t), EHCI_ITD_GET_LEN(t), 0); USBHIST_LOG(ehcidebug, " ioc = %x pg = %x offs = %x", EHCI_ITD_GET_IOC(t), EHCI_ITD_GET_PG(t), EHCI_ITD_GET_OFFS(t), 0); } USBHIST_LOG(ehcidebug, "ITDbufr: ", 0, 0, 0, 0); for (i = 0; i < EHCI_ITD_NBUFFERS; i++) USBHIST_LOG(ehcidebug, " %x", EHCI_ITD_GET_BPTR(le32toh(itd->itd.itd_bufr[i])), 0, 0, 0); b = le32toh(itd->itd.itd_bufr[0]); b2 = le32toh(itd->itd.itd_bufr[1]); b3 = le32toh(itd->itd.itd_bufr[2]); USBHIST_LOG(ehcidebug, " ep = %x daddr = %x dir = %d", EHCI_ITD_GET_EP(b), EHCI_ITD_GET_DADDR(b), EHCI_ITD_GET_DIR(b2), 0); USBHIST_LOG(ehcidebug, " maxpkt = %x multi = %x", EHCI_ITD_GET_MAXPKT(b2), EHCI_ITD_GET_MULTI(b3), 0, 0); } Static void ehci_dump_sitd(struct ehci_soft_itd *itd) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "SITD %p next = %p prev = %p", itd, itd->u.frame_list.next, itd->u.frame_list.prev, 0); USBHIST_LOG(ehcidebug, " xfernext=%p physaddr=%X slot=%d", itd->xfer_next, itd->physaddr, itd->slot, 0); } Static void ehci_dump_exfer(struct ehci_xfer *ex) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "ex = %p sqtdstart = %p end = %p", ex, ex->sqtdstart, ex->sqtdend, 0); USBHIST_LOG(ehcidebug, " itdstart = %p end = %p isdone = %d", ex->itdstart, ex->itdend, ex->isdone, 0); } #endif Static usbd_status ehci_open(usbd_pipe_handle pipe) { usbd_device_handle dev = pipe->device; ehci_softc_t *sc = dev->bus->hci_private; usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc; u_int8_t addr = dev->address; u_int8_t xfertype = UE_GET_XFERTYPE(ed->bmAttributes); struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; ehci_soft_qh_t *sqh; usbd_status err; int ival, speed, naks; int hshubaddr, hshubport; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "pipe=%p, addr=%d, endpt=%d (%d)", pipe, addr, ed->bEndpointAddress, sc->sc_addr); if (dev->myhsport) { /* * When directly attached FS/LS device while doing embedded * transaction translations and we are the hub, set the hub * address to 0 (us). */ if (!(sc->sc_flags & EHCIF_ETTF) || (dev->myhsport->parent->address != sc->sc_addr)) { hshubaddr = dev->myhsport->parent->address; } else { hshubaddr = 0; } hshubport = dev->myhsport->portno; } else { hshubaddr = 0; hshubport = 0; } if (sc->sc_dying) return (USBD_IOERROR); /* toggle state needed for bulk endpoints */ epipe->nexttoggle = pipe->endpoint->datatoggle; if (addr == sc->sc_addr) { switch (ed->bEndpointAddress) { case USB_CONTROL_ENDPOINT: pipe->methods = &ehci_root_ctrl_methods; break; case UE_DIR_IN | EHCI_INTR_ENDPT: pipe->methods = &ehci_root_intr_methods; break; default: USBHIST_LOG(ehcidebug, "bad bEndpointAddress 0x%02x", ed->bEndpointAddress, 0, 0, 0); return (USBD_INVAL); } return (USBD_NORMAL_COMPLETION); } /* XXX All this stuff is only valid for async. */ switch (dev->speed) { case USB_SPEED_LOW: speed = EHCI_QH_SPEED_LOW; break; case USB_SPEED_FULL: speed = EHCI_QH_SPEED_FULL; break; case USB_SPEED_HIGH: speed = EHCI_QH_SPEED_HIGH; break; default: panic("ehci_open: bad device speed %d", dev->speed); } if (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_ISOCHRONOUS) { aprint_error_dev(sc->sc_dev, "error opening low/full speed " "isoc endpoint.\n"); aprint_normal_dev(sc->sc_dev, "a low/full speed device is " "attached to a USB2 hub, and transaction translations are " "not yet supported.\n"); aprint_normal_dev(sc->sc_dev, "reattach the device to the " "root hub instead.\n"); USBHIST_LOG(ehcidebug, "hshubaddr=%d hshubport=%d", hshubaddr, hshubport, 0, 0); return USBD_INVAL; } /* * For interrupt transfer, nak throttling must be disabled, but for * the other transfer type, nak throttling should be enabled from the * viewpoint that avoids the memory thrashing. */ naks = (xfertype == UE_INTERRUPT) ? 0 : ((speed == EHCI_QH_SPEED_HIGH) ? 4 : 0); /* Allocate sqh for everything, save isoc xfers */ if (xfertype != UE_ISOCHRONOUS) { sqh = ehci_alloc_sqh(sc); if (sqh == NULL) return (USBD_NOMEM); /* qh_link filled when the QH is added */ sqh->qh.qh_endp = htole32( EHCI_QH_SET_ADDR(addr) | EHCI_QH_SET_ENDPT(UE_GET_ADDR(ed->bEndpointAddress)) | EHCI_QH_SET_EPS(speed) | EHCI_QH_DTC | EHCI_QH_SET_MPL(UGETW(ed->wMaxPacketSize)) | (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_CONTROL ? EHCI_QH_CTL : 0) | EHCI_QH_SET_NRL(naks) ); sqh->qh.qh_endphub = htole32( EHCI_QH_SET_MULT(1) | EHCI_QH_SET_SMASK(xfertype == UE_INTERRUPT ? 0x02 : 0) ); if (speed != EHCI_QH_SPEED_HIGH) sqh->qh.qh_endphub |= htole32( EHCI_QH_SET_PORT(hshubport) | EHCI_QH_SET_HUBA(hshubaddr) | EHCI_QH_SET_CMASK(0x08) /* XXX */ ); sqh->qh.qh_curqtd = EHCI_NULL; /* Fill the overlay qTD */ sqh->qh.qh_qtd.qtd_next = EHCI_NULL; sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; sqh->qh.qh_qtd.qtd_status = htole32(0); usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); epipe->sqh = sqh; } else { sqh = NULL; } /*xfertype == UE_ISOC*/ switch (xfertype) { case UE_CONTROL: err = usb_allocmem(&sc->sc_bus, sizeof(usb_device_request_t), 0, &epipe->u.ctl.reqdma); #ifdef EHCI_DEBUG if (err) printf("ehci_open: usb_allocmem()=%d\n", err); #endif if (err) goto bad; pipe->methods = &ehci_device_ctrl_methods; mutex_enter(&sc->sc_lock); ehci_add_qh(sc, sqh, sc->sc_async_head); mutex_exit(&sc->sc_lock); break; case UE_BULK: pipe->methods = &ehci_device_bulk_methods; mutex_enter(&sc->sc_lock); ehci_add_qh(sc, sqh, sc->sc_async_head); mutex_exit(&sc->sc_lock); break; case UE_INTERRUPT: pipe->methods = &ehci_device_intr_methods; ival = pipe->interval; if (ival == USBD_DEFAULT_INTERVAL) { if (speed == EHCI_QH_SPEED_HIGH) { if (ed->bInterval > 16) { /* * illegal with high-speed, but there * were documentation bugs in the spec, * so be generous */ ival = 256; } else ival = (1 << (ed->bInterval - 1)) / 8; } else ival = ed->bInterval; } err = ehci_device_setintr(sc, sqh, ival); if (err) goto bad; break; case UE_ISOCHRONOUS: pipe->methods = &ehci_device_isoc_methods; if (ed->bInterval == 0 || ed->bInterval > 16) { printf("ehci: opening pipe with invalid bInterval\n"); err = USBD_INVAL; goto bad; } if (UGETW(ed->wMaxPacketSize) == 0) { printf("ehci: zero length endpoint open request\n"); err = USBD_INVAL; goto bad; } epipe->u.isoc.next_frame = 0; epipe->u.isoc.cur_xfers = 0; break; default: USBHIST_LOG(ehcidebug, "bad xfer type %d", xfertype, 0, 0, 0); err = USBD_INVAL; goto bad; } return (USBD_NORMAL_COMPLETION); bad: if (sqh != NULL) ehci_free_sqh(sc, sqh); return (err); } /* * Add an ED to the schedule. Called with USB lock held. */ Static void ehci_add_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head) { KASSERT(mutex_owned(&sc->sc_lock)); USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); usb_syncmem(&head->dma, head->offs + offsetof(ehci_qh_t, qh_link), sizeof(head->qh.qh_link), BUS_DMASYNC_POSTWRITE); sqh->next = head->next; sqh->qh.qh_link = head->qh.qh_link; usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_link), sizeof(sqh->qh.qh_link), BUS_DMASYNC_PREWRITE); head->next = sqh; head->qh.qh_link = htole32(sqh->physaddr | EHCI_LINK_QH); usb_syncmem(&head->dma, head->offs + offsetof(ehci_qh_t, qh_link), sizeof(head->qh.qh_link), BUS_DMASYNC_PREWRITE); #ifdef EHCI_DEBUG ehci_dump_sqh(sqh); #endif } /* * Remove an ED from the schedule. Called with USB lock held. */ Static void ehci_rem_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head) { ehci_soft_qh_t *p; KASSERT(mutex_owned(&sc->sc_lock)); /* XXX */ for (p = head; p != NULL && p->next != sqh; p = p->next) ; if (p == NULL) panic("ehci_rem_qh: ED not found"); usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_link), sizeof(sqh->qh.qh_link), BUS_DMASYNC_POSTWRITE); p->next = sqh->next; p->qh.qh_link = sqh->qh.qh_link; usb_syncmem(&p->dma, p->offs + offsetof(ehci_qh_t, qh_link), sizeof(p->qh.qh_link), BUS_DMASYNC_PREWRITE); ehci_sync_hc(sc); } Static void ehci_set_qh_qtd(ehci_soft_qh_t *sqh, ehci_soft_qtd_t *sqtd) { int i; u_int32_t status; /* Save toggle bit and ping status. */ usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); status = sqh->qh.qh_qtd.qtd_status & htole32(EHCI_QTD_TOGGLE_MASK | EHCI_QTD_SET_STATUS(EHCI_QTD_PINGSTATE)); /* Set HALTED to make hw leave it alone. */ sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_SET_STATUS(EHCI_QTD_HALTED)); usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), sizeof(sqh->qh.qh_qtd.qtd_status), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); sqh->qh.qh_curqtd = 0; sqh->qh.qh_qtd.qtd_next = htole32(sqtd->physaddr); sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; for (i = 0; i < EHCI_QTD_NBUFFERS; i++) sqh->qh.qh_qtd.qtd_buffer[i] = 0; sqh->sqtd = sqtd; usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); /* Set !HALTED && !ACTIVE to start execution, preserve some fields */ sqh->qh.qh_qtd.qtd_status = status; usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), sizeof(sqh->qh.qh_qtd.qtd_status), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } /* * Ensure that the HC has released all references to the QH. We do this * by asking for a Async Advance Doorbell interrupt and then we wait for * the interrupt. * To make this easier we first obtain exclusive use of the doorbell. */ Static void ehci_sync_hc(ehci_softc_t *sc) { int error __diagused; KASSERT(mutex_owned(&sc->sc_lock)); USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); if (sc->sc_dying) { USBHIST_LOG(ehcidebug, "dying", 0, 0, 0, 0); return; } /* ask for doorbell */ EOWRITE4(sc, EHCI_USBCMD, EOREAD4(sc, EHCI_USBCMD) | EHCI_CMD_IAAD); USBHIST_LOG(ehcidebug, "cmd = 0x%08x sts = 0x%08x", EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS), 0, 0); error = cv_timedwait(&sc->sc_doorbell, &sc->sc_lock, hz); /* bell wait */ USBHIST_LOG(ehcidebug, "cmd = 0x%08x sts = 0x%08x", EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS), 0, 0); #ifdef DIAGNOSTIC if (error) printf("ehci_sync_hc: cv_timedwait() = %d\n", error); #endif } Static void ehci_rem_free_itd_chain(ehci_softc_t *sc, struct ehci_xfer *exfer) { struct ehci_soft_itd *itd, *prev; prev = NULL; if (exfer->itdstart == NULL || exfer->itdend == NULL) panic("ehci isoc xfer being freed, but with no itd chain\n"); for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { prev = itd->u.frame_list.prev; /* Unlink itd from hardware chain, or frame array */ if (prev == NULL) { /* We're at the table head */ sc->sc_softitds[itd->slot] = itd->u.frame_list.next; sc->sc_flist[itd->slot] = itd->itd.itd_next; usb_syncmem(&sc->sc_fldma, sizeof(ehci_link_t) * itd->slot, sizeof(ehci_link_t), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); if (itd->u.frame_list.next != NULL) itd->u.frame_list.next->u.frame_list.prev = NULL; } else { /* XXX this part is untested... */ prev->itd.itd_next = itd->itd.itd_next; usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE); prev->u.frame_list.next = itd->u.frame_list.next; if (itd->u.frame_list.next != NULL) itd->u.frame_list.next->u.frame_list.prev = prev; } } prev = NULL; for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { if (prev != NULL) ehci_free_itd(sc, prev); prev = itd; } if (prev) ehci_free_itd(sc, prev); exfer->itdstart = NULL; exfer->itdend = NULL; } /***********/ /* * Data structures and routines to emulate the root hub. */ Static usb_device_descriptor_t ehci_devd = { USB_DEVICE_DESCRIPTOR_SIZE, UDESC_DEVICE, /* type */ {0x00, 0x02}, /* USB version */ UDCLASS_HUB, /* class */ UDSUBCLASS_HUB, /* subclass */ UDPROTO_HSHUBSTT, /* protocol */ 64, /* max packet */ {0},{0},{0x00,0x01}, /* device id */ 1,2,0, /* string indicies */ 1 /* # of configurations */ }; Static const usb_device_qualifier_t ehci_odevd = { USB_DEVICE_DESCRIPTOR_SIZE, UDESC_DEVICE_QUALIFIER, /* type */ {0x00, 0x02}, /* USB version */ UDCLASS_HUB, /* class */ UDSUBCLASS_HUB, /* subclass */ UDPROTO_FSHUB, /* protocol */ 64, /* max packet */ 1, /* # of configurations */ 0 }; Static const usb_config_descriptor_t ehci_confd = { USB_CONFIG_DESCRIPTOR_SIZE, UDESC_CONFIG, {USB_CONFIG_DESCRIPTOR_SIZE + USB_INTERFACE_DESCRIPTOR_SIZE + USB_ENDPOINT_DESCRIPTOR_SIZE}, 1, 1, 0, UC_ATTR_MBO | UC_SELF_POWERED, 0 /* max power */ }; Static const usb_interface_descriptor_t ehci_ifcd = { USB_INTERFACE_DESCRIPTOR_SIZE, UDESC_INTERFACE, 0, 0, 1, UICLASS_HUB, UISUBCLASS_HUB, UIPROTO_HSHUBSTT, 0 }; Static const usb_endpoint_descriptor_t ehci_endpd = { USB_ENDPOINT_DESCRIPTOR_SIZE, UDESC_ENDPOINT, UE_DIR_IN | EHCI_INTR_ENDPT, UE_INTERRUPT, {8, 0}, /* max packet */ 12 }; Static const usb_hub_descriptor_t ehci_hubd = { USB_HUB_DESCRIPTOR_SIZE, UDESC_HUB, 0, {0,0}, 0, 0, {""}, {""}, }; /* * Simulate a hardware hub by handling all the necessary requests. */ Static usbd_status ehci_root_ctrl_transfer(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; /* Insert last in queue. */ mutex_enter(&sc->sc_lock); err = usb_insert_transfer(xfer); mutex_exit(&sc->sc_lock); if (err) return (err); /* Pipe isn't running, start first */ return (ehci_root_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); } Static usbd_status ehci_root_ctrl_start(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usb_device_request_t *req; void *buf = NULL; int port, i; int len, value, index, l, totlen = 0; usb_port_status_t ps; usb_hub_descriptor_t hubd; usbd_status err; u_int32_t v; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); if (sc->sc_dying) return (USBD_IOERROR); #ifdef DIAGNOSTIC if (!(xfer->rqflags & URQ_REQUEST)) /* XXX panic */ return (USBD_INVAL); #endif req = &xfer->request; USBHIST_LOG(ehcidebug, "type=0x%02x request=%02x", req->bmRequestType, req->bRequest, 0, 0); len = UGETW(req->wLength); value = UGETW(req->wValue); index = UGETW(req->wIndex); if (len != 0) buf = KERNADDR(&xfer->dmabuf, 0); #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): if (len > 0) { *(u_int8_t *)buf = sc->sc_conf; totlen = 1; } break; case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE): USBHIST_LOG(ehcidebug, "wValue=0x%04x", value, 0, 0, 0); if (len == 0) break; switch(value >> 8) { case UDESC_DEVICE: if ((value & 0xff) != 0) { err = USBD_IOERROR; goto ret; } totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); USETW(ehci_devd.idVendor, sc->sc_id_vendor); memcpy(buf, &ehci_devd, l); break; /* * We can't really operate at another speed, but the spec says * we need this descriptor. */ case UDESC_DEVICE_QUALIFIER: if ((value & 0xff) != 0) { err = USBD_IOERROR; goto ret; } totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); memcpy(buf, &ehci_odevd, l); break; /* * We can't really operate at another speed, but the spec says * we need this descriptor. */ case UDESC_OTHER_SPEED_CONFIGURATION: case UDESC_CONFIG: if ((value & 0xff) != 0) { err = USBD_IOERROR; goto ret; } totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE); memcpy(buf, &ehci_confd, l); ((usb_config_descriptor_t *)buf)->bDescriptorType = value >> 8; buf = (char *)buf + l; len -= l; l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE); totlen += l; memcpy(buf, &ehci_ifcd, l); buf = (char *)buf + l; len -= l; l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE); totlen += l; memcpy(buf, &ehci_endpd, l); break; case UDESC_STRING: #define sd ((usb_string_descriptor_t *)buf) switch (value & 0xff) { case 0: /* Language table */ totlen = usb_makelangtbl(sd, len); break; case 1: /* Vendor */ totlen = usb_makestrdesc(sd, len, sc->sc_vendor); break; case 2: /* Product */ totlen = usb_makestrdesc(sd, len, "EHCI root hub"); break; } #undef sd break; default: err = USBD_IOERROR; goto ret; } break; case C(UR_GET_INTERFACE, UT_READ_INTERFACE): if (len > 0) { *(u_int8_t *)buf = 0; totlen = 1; } break; case C(UR_GET_STATUS, UT_READ_DEVICE): if (len > 1) { USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED); totlen = 2; } break; case C(UR_GET_STATUS, UT_READ_INTERFACE): case C(UR_GET_STATUS, UT_READ_ENDPOINT): if (len > 1) { USETW(((usb_status_t *)buf)->wStatus, 0); totlen = 2; } break; case C(UR_SET_ADDRESS, UT_WRITE_DEVICE): if (value >= USB_MAX_DEVICES) { err = USBD_IOERROR; goto ret; } sc->sc_addr = value; break; case C(UR_SET_CONFIG, UT_WRITE_DEVICE): if (value != 0 && value != 1) { err = USBD_IOERROR; goto ret; } 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 = USBD_IOERROR; goto ret; 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): USBHIST_LOG(ehcidebug, "UR_CLEAR_PORT_FEATURE port=%d feature=%d", index, value, 0, 0); if (index < 1 || index > sc->sc_noport) { err = USBD_IOERROR; goto ret; } port = EHCI_PORTSC(index); v = EOREAD4(sc, port); USBHIST_LOG(ehcidebug, "portsc=0x%08x", v, 0, 0, 0); v &= ~EHCI_PS_CLEAR; switch(value) { case UHF_PORT_ENABLE: EOWRITE4(sc, port, v &~ EHCI_PS_PE); break; case UHF_PORT_SUSPEND: if (!(v & EHCI_PS_SUSP)) /* not suspended */ break; v &= ~EHCI_PS_SUSP; EOWRITE4(sc, port, v | EHCI_PS_FPR); /* see USB2 spec ch. 7.1.7.7 */ usb_delay_ms(&sc->sc_bus, 20); EOWRITE4(sc, port, v); usb_delay_ms(&sc->sc_bus, 2); #ifdef DEBUG v = EOREAD4(sc, port); if (v & (EHCI_PS_FPR | EHCI_PS_SUSP)) printf("ehci: resume failed: %x\n", v); #endif break; case UHF_PORT_POWER: if (sc->sc_hasppc) EOWRITE4(sc, port, v &~ EHCI_PS_PP); break; case UHF_PORT_TEST: USBHIST_LOG(ehcidebug, "clear port test " "%d", index, 0, 0, 0); break; case UHF_PORT_INDICATOR: USBHIST_LOG(ehcidebug, "clear port ind " "%d", index, 0, 0, 0); EOWRITE4(sc, port, v &~ EHCI_PS_PIC); break; case UHF_C_PORT_CONNECTION: EOWRITE4(sc, port, v | EHCI_PS_CSC); break; case UHF_C_PORT_ENABLE: EOWRITE4(sc, port, v | EHCI_PS_PEC); break; case UHF_C_PORT_SUSPEND: /* how? */ break; case UHF_C_PORT_OVER_CURRENT: EOWRITE4(sc, port, v | EHCI_PS_OCC); break; case UHF_C_PORT_RESET: sc->sc_isreset[index] = 0; break; default: err = USBD_IOERROR; goto ret; } #if 0 switch(value) { case UHF_C_PORT_CONNECTION: case UHF_C_PORT_ENABLE: case UHF_C_PORT_SUSPEND: case UHF_C_PORT_OVER_CURRENT: case UHF_C_PORT_RESET: default: break; } #endif break; case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE): if (len == 0) break; if ((value & 0xff) != 0) { err = USBD_IOERROR; goto ret; } hubd = ehci_hubd; hubd.bNbrPorts = sc->sc_noport; v = EOREAD4(sc, EHCI_HCSPARAMS); USETW(hubd.wHubCharacteristics, EHCI_HCS_PPC(v) ? UHD_PWR_INDIVIDUAL : UHD_PWR_NO_SWITCH | EHCI_HCS_P_INDICATOR(EREAD4(sc, EHCI_HCSPARAMS)) ? UHD_PORT_IND : 0); hubd.bPwrOn2PwrGood = 200; /* XXX can't find out? */ for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8) hubd.DeviceRemovable[i++] = 0; /* XXX can't find out? */ hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i; l = min(len, hubd.bDescLength); totlen = l; memcpy(buf, &hubd, l); break; case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE): if (len != 4) { err = USBD_IOERROR; goto ret; } memset(buf, 0, len); /* ? XXX */ totlen = len; break; case C(UR_GET_STATUS, UT_READ_CLASS_OTHER): USBHIST_LOG(ehcidebug, "get port status i=%d", index, 0, 0, 0); if (index < 1 || index > sc->sc_noport) { err = USBD_IOERROR; goto ret; } if (len != 4) { err = USBD_IOERROR; goto ret; } v = EOREAD4(sc, EHCI_PORTSC(index)); USBHIST_LOG(ehcidebug, "port status=0x%04x", v, 0, 0, 0); i = UPS_HIGH_SPEED; if (sc->sc_flags & EHCIF_ETTF) { /* * If we are doing embedded transaction translation, * then directly attached LS/FS devices are reset by * the EHCI controller itself. PSPD is encoded * the same way as in USBSTATUS. */ i = __SHIFTOUT(v, EHCI_PS_PSPD) * UPS_LOW_SPEED; } if (v & EHCI_PS_CS) i |= UPS_CURRENT_CONNECT_STATUS; if (v & EHCI_PS_PE) i |= UPS_PORT_ENABLED; if (v & EHCI_PS_SUSP) i |= UPS_SUSPEND; if (v & EHCI_PS_OCA) i |= UPS_OVERCURRENT_INDICATOR; if (v & EHCI_PS_PR) i |= UPS_RESET; if (v & EHCI_PS_PP) i |= UPS_PORT_POWER; if (sc->sc_vendor_port_status) i = sc->sc_vendor_port_status(sc, v, i); USETW(ps.wPortStatus, i); i = 0; if (v & EHCI_PS_CSC) i |= UPS_C_CONNECT_STATUS; if (v & EHCI_PS_PEC) i |= UPS_C_PORT_ENABLED; if (v & EHCI_PS_OCC) i |= UPS_C_OVERCURRENT_INDICATOR; if (sc->sc_isreset[index]) i |= UPS_C_PORT_RESET; USETW(ps.wPortChange, i); l = min(len, sizeof ps); memcpy(buf, &ps, l); totlen = l; break; case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE): err = USBD_IOERROR; goto ret; case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE): break; case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER): if (index < 1 || index > sc->sc_noport) { err = USBD_IOERROR; goto ret; } port = EHCI_PORTSC(index); v = EOREAD4(sc, port); USBHIST_LOG(ehcidebug, "portsc=0x%08x", v, 0, 0, 0); v &= ~EHCI_PS_CLEAR; switch(value) { case UHF_PORT_ENABLE: EOWRITE4(sc, port, v | EHCI_PS_PE); break; case UHF_PORT_SUSPEND: EOWRITE4(sc, port, v | EHCI_PS_SUSP); break; case UHF_PORT_RESET: USBHIST_LOG(ehcidebug, "reset port %d", index, 0, 0, 0); if (EHCI_PS_IS_LOWSPEED(v) && sc->sc_ncomp > 0 && !(sc->sc_flags & EHCIF_ETTF)) { /* * Low speed device on non-ETTF controller or * unaccompanied controller, give up ownership. */ ehci_disown(sc, index, 1); break; } /* Start reset sequence. */ v &= ~ (EHCI_PS_PE | EHCI_PS_PR); EOWRITE4(sc, port, v | EHCI_PS_PR); /* Wait for reset to complete. */ usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY); if (sc->sc_dying) { err = USBD_IOERROR; goto ret; } /* * An embedded transaction translator will automatically * terminate the reset sequence so there's no need to * it. */ v = EOREAD4(sc, port); if (v & EHCI_PS_PR) { /* Terminate reset sequence. */ EOWRITE4(sc, port, v & ~EHCI_PS_PR); /* Wait for HC to complete reset. */ usb_delay_ms(&sc->sc_bus, EHCI_PORT_RESET_COMPLETE); if (sc->sc_dying) { err = USBD_IOERROR; goto ret; } } v = EOREAD4(sc, port); USBHIST_LOG(ehcidebug, "ehci after reset, status=0x%08x", v, 0, 0, 0); if (v & EHCI_PS_PR) { printf("%s: port reset timeout\n", device_xname(sc->sc_dev)); return (USBD_TIMEOUT); } if (!(v & EHCI_PS_PE)) { /* Not a high speed device, give up ownership.*/ ehci_disown(sc, index, 0); break; } sc->sc_isreset[index] = 1; USBHIST_LOG(ehcidebug, "ehci port %d reset, status = 0x%08x", index, v, 0, 0); break; case UHF_PORT_POWER: USBHIST_LOG(ehcidebug, "set port power %d (has PPC = %d)", index, sc->sc_hasppc, 0, 0); if (sc->sc_hasppc) EOWRITE4(sc, port, v | EHCI_PS_PP); break; case UHF_PORT_TEST: USBHIST_LOG(ehcidebug, "set port test %d", index, 0, 0, 0); break; case UHF_PORT_INDICATOR: USBHIST_LOG(ehcidebug, "set port ind %d", index, 0, 0, 0); EOWRITE4(sc, port, v | EHCI_PS_PIC); break; default: err = USBD_IOERROR; goto ret; } break; case C(UR_CLEAR_TT_BUFFER, UT_WRITE_CLASS_OTHER): case C(UR_RESET_TT, UT_WRITE_CLASS_OTHER): case C(UR_GET_TT_STATE, UT_READ_CLASS_OTHER): case C(UR_STOP_TT, UT_WRITE_CLASS_OTHER): break; default: err = USBD_IOERROR; goto ret; } xfer->actlen = totlen; err = USBD_NORMAL_COMPLETION; ret: mutex_enter(&sc->sc_lock); xfer->status = err; usb_transfer_complete(xfer); mutex_exit(&sc->sc_lock); return (USBD_IN_PROGRESS); } Static void ehci_disown(ehci_softc_t *sc, int index, int lowspeed) { int port; u_int32_t v; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "index=%d lowspeed=%d", index, lowspeed, 0, 0); #ifdef DIAGNOSTIC if (sc->sc_npcomp != 0) { int i = (index-1) / sc->sc_npcomp; if (i >= sc->sc_ncomp) printf("%s: strange port\n", device_xname(sc->sc_dev)); else printf("%s: handing over %s speed device on " "port %d to %s\n", device_xname(sc->sc_dev), lowspeed ? "low" : "full", index, device_xname(sc->sc_comps[i])); } else { printf("%s: npcomp == 0\n", device_xname(sc->sc_dev)); } #endif port = EHCI_PORTSC(index); v = EOREAD4(sc, port) &~ EHCI_PS_CLEAR; EOWRITE4(sc, port, v | EHCI_PS_PO); } /* Abort a root control request. */ Static void ehci_root_ctrl_abort(usbd_xfer_handle xfer) { /* Nothing to do, all transfers are synchronous. */ } /* Close the root pipe. */ Static void ehci_root_ctrl_close(usbd_pipe_handle pipe) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); /* Nothing to do. */ } Static void ehci_root_ctrl_done(usbd_xfer_handle xfer) { xfer->hcpriv = NULL; } Static usbd_status ehci_root_intr_transfer(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; /* Insert last in queue. */ mutex_enter(&sc->sc_lock); err = usb_insert_transfer(xfer); mutex_exit(&sc->sc_lock); if (err) return (err); /* Pipe isn't running, start first */ return (ehci_root_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); } Static usbd_status ehci_root_intr_start(usbd_xfer_handle xfer) { usbd_pipe_handle pipe = xfer->pipe; ehci_softc_t *sc = pipe->device->bus->hci_private; if (sc->sc_dying) return (USBD_IOERROR); mutex_enter(&sc->sc_lock); sc->sc_intrxfer = xfer; mutex_exit(&sc->sc_lock); return (USBD_IN_PROGRESS); } /* Abort a root interrupt request. */ Static void ehci_root_intr_abort(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; KASSERT(mutex_owned(&sc->sc_lock)); KASSERT(xfer->pipe->intrxfer == xfer); sc->sc_intrxfer = NULL; xfer->status = USBD_CANCELLED; usb_transfer_complete(xfer); } /* Close the root pipe. */ Static void ehci_root_intr_close(usbd_pipe_handle pipe) { ehci_softc_t *sc = pipe->device->bus->hci_private; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); KASSERT(mutex_owned(&sc->sc_lock)); sc->sc_intrxfer = NULL; } Static void ehci_root_intr_done(usbd_xfer_handle xfer) { xfer->hcpriv = NULL; } /************************/ Static ehci_soft_qh_t * ehci_alloc_sqh(ehci_softc_t *sc) { ehci_soft_qh_t *sqh; usbd_status err; int i, offs; usb_dma_t dma; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); if (sc->sc_freeqhs == NULL) { USBHIST_LOG(ehcidebug, "allocating chunk", 0, 0, 0, 0); err = usb_allocmem(&sc->sc_bus, EHCI_SQH_SIZE * EHCI_SQH_CHUNK, EHCI_PAGE_SIZE, &dma); #ifdef EHCI_DEBUG if (err) printf("ehci_alloc_sqh: usb_allocmem()=%d\n", err); #endif if (err) return (NULL); for(i = 0; i < EHCI_SQH_CHUNK; i++) { offs = i * EHCI_SQH_SIZE; sqh = KERNADDR(&dma, offs); sqh->physaddr = DMAADDR(&dma, offs); sqh->dma = dma; sqh->offs = offs; sqh->next = sc->sc_freeqhs; sc->sc_freeqhs = sqh; } } sqh = sc->sc_freeqhs; sc->sc_freeqhs = sqh->next; memset(&sqh->qh, 0, sizeof(ehci_qh_t)); sqh->next = NULL; return (sqh); } Static void ehci_free_sqh(ehci_softc_t *sc, ehci_soft_qh_t *sqh) { sqh->next = sc->sc_freeqhs; sc->sc_freeqhs = sqh; } Static ehci_soft_qtd_t * ehci_alloc_sqtd(ehci_softc_t *sc) { ehci_soft_qtd_t *sqtd = NULL; usbd_status err; int i, offs; usb_dma_t dma; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); if (sc->sc_freeqtds == NULL) { USBHIST_LOG(ehcidebug, "allocating chunk", 0, 0, 0, 0); err = usb_allocmem(&sc->sc_bus, EHCI_SQTD_SIZE*EHCI_SQTD_CHUNK, EHCI_PAGE_SIZE, &dma); #ifdef EHCI_DEBUG if (err) printf("ehci_alloc_sqtd: usb_allocmem()=%d\n", err); #endif if (err) goto done; for(i = 0; i < EHCI_SQTD_CHUNK; i++) { offs = i * EHCI_SQTD_SIZE; sqtd = KERNADDR(&dma, offs); sqtd->physaddr = DMAADDR(&dma, offs); sqtd->dma = dma; sqtd->offs = offs; sqtd->nextqtd = sc->sc_freeqtds; sc->sc_freeqtds = sqtd; } } sqtd = sc->sc_freeqtds; sc->sc_freeqtds = sqtd->nextqtd; memset(&sqtd->qtd, 0, sizeof(ehci_qtd_t)); sqtd->nextqtd = NULL; sqtd->xfer = NULL; done: return (sqtd); } Static void ehci_free_sqtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd) { KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); sqtd->nextqtd = sc->sc_freeqtds; sc->sc_freeqtds = sqtd; } Static usbd_status ehci_alloc_sqtd_chain(struct ehci_pipe *epipe, ehci_softc_t *sc, int alen, int rd, usbd_xfer_handle xfer, ehci_soft_qtd_t **sp, ehci_soft_qtd_t **ep) { ehci_soft_qtd_t *next, *cur; ehci_physaddr_t nextphys; u_int32_t qtdstatus; int len, curlen, mps; int i, tog; int pages, pageoffs; bus_size_t curoffs; vaddr_t va, va_offs; usb_dma_t *dma = &xfer->dmabuf; u_int16_t flags = xfer->flags; paddr_t a; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "start len=%d", alen, 0, 0, 0); len = alen; qtdstatus = EHCI_QTD_ACTIVE | EHCI_QTD_SET_PID(rd ? EHCI_QTD_PID_IN : EHCI_QTD_PID_OUT) | EHCI_QTD_SET_CERR(3) /* IOC set below */ /* BYTES set below */ ; mps = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize); tog = epipe->nexttoggle; qtdstatus |= EHCI_QTD_SET_TOGGLE(tog); cur = ehci_alloc_sqtd(sc); *sp = cur; if (cur == NULL) goto nomem; usb_syncmem(dma, 0, alen, rd ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); curoffs = 0; for (;;) { /* The EHCI hardware can handle at most 5 pages. */ va_offs = (vaddr_t)KERNADDR(dma, curoffs); va_offs = EHCI_PAGE_OFFSET(va_offs); if (len-curoffs < EHCI_QTD_NBUFFERS*EHCI_PAGE_SIZE - va_offs) { /* we can handle it in this QTD */ curlen = len - curoffs; } else { /* must use multiple TDs, fill as much as possible. */ curlen = EHCI_QTD_NBUFFERS * EHCI_PAGE_SIZE - va_offs; /* the length must be a multiple of the max size */ curlen -= curlen % mps; USBHIST_LOG(ehcidebug, "multiple QTDs, " "curlen=%d", curlen, 0, 0, 0); #ifdef DIAGNOSTIC if (curlen == 0) panic("ehci_alloc_sqtd_chain: curlen == 0"); #endif } USBHIST_LOG(ehcidebug, "len=%d curlen=%d curoffs=%zu", len, curlen, (size_t)curoffs, 0); /* * Allocate another transfer if there's more data left, * or if force last short transfer flag is set and we're * allocating a multiple of the max packet size. */ if (curoffs + curlen != len || ((curlen % mps) == 0 && !rd && curlen != 0 && (flags & USBD_FORCE_SHORT_XFER))) { next = ehci_alloc_sqtd(sc); if (next == NULL) goto nomem; nextphys = htole32(next->physaddr); } else { next = NULL; nextphys = EHCI_NULL; } /* Find number of pages we'll be using, insert dma addresses */ pages = EHCI_PAGE(curlen + EHCI_PAGE_SIZE -1) >> 12; KASSERT(pages <= EHCI_QTD_NBUFFERS); pageoffs = EHCI_PAGE(curoffs); for (i = 0; i < pages; i++) { a = DMAADDR(dma, pageoffs + i * EHCI_PAGE_SIZE); cur->qtd.qtd_buffer[i] = htole32(a & 0xFFFFF000); /* Cast up to avoid compiler warnings */ cur->qtd.qtd_buffer_hi[i] = htole32((uint64_t)a >> 32); } /* First buffer pointer requires a page offset to start at */ va = (vaddr_t)KERNADDR(dma, curoffs); cur->qtd.qtd_buffer[0] |= htole32(EHCI_PAGE_OFFSET(va)); cur->nextqtd = next; cur->qtd.qtd_next = cur->qtd.qtd_altnext = nextphys; cur->qtd.qtd_status = htole32(qtdstatus | EHCI_QTD_SET_BYTES(curlen)); cur->xfer = xfer; cur->len = curlen; USBHIST_LOG(ehcidebug, "cbp=0x%08zx end=0x%08zx", (size_t)curoffs, (size_t)(curoffs + curlen), 0, 0); /* adjust the toggle based on the number of packets in this qtd */ if (((curlen + mps - 1) / mps) & 1) { tog ^= 1; qtdstatus ^= EHCI_QTD_TOGGLE_MASK; } if (next == NULL) break; usb_syncmem(&cur->dma, cur->offs, sizeof(cur->qtd), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); USBHIST_LOG(ehcidebug, "extend chain", 0, 0, 0, 0); if (len) curoffs += curlen; cur = next; } cur->qtd.qtd_status |= htole32(EHCI_QTD_IOC); usb_syncmem(&cur->dma, cur->offs, sizeof(cur->qtd), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); *ep = cur; epipe->nexttoggle = tog; USBHIST_LOG(ehcidebug, "return sqtd=%p sqtdend=%p", *sp, *ep, 0, 0); return (USBD_NORMAL_COMPLETION); nomem: /* XXX free chain */ USBHIST_LOG(ehcidebug, "no memory", 0, 0, 0, 0); return (USBD_NOMEM); } Static void ehci_free_sqtd_chain(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd, ehci_soft_qtd_t *sqtdend) { ehci_soft_qtd_t *p; int i; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "sqtd=%p sqtdend=%p", sqtd, sqtdend, 0, 0); for (i = 0; sqtd != sqtdend; sqtd = p, i++) { p = sqtd->nextqtd; ehci_free_sqtd(sc, sqtd); } } Static ehci_soft_itd_t * ehci_alloc_itd(ehci_softc_t *sc) { struct ehci_soft_itd *itd, *freeitd; usbd_status err; int i, offs, frindex, previndex; usb_dma_t dma; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); mutex_enter(&sc->sc_lock); /* Find an itd that wasn't freed this frame or last frame. This can * discard itds that were freed before frindex wrapped around * XXX - can this lead to thrashing? Could fix by enabling wrap-around * interrupt and fiddling with list when that happens */ frindex = (EOREAD4(sc, EHCI_FRINDEX) + 1) >> 3; previndex = (frindex != 0) ? frindex - 1 : sc->sc_flsize; freeitd = NULL; LIST_FOREACH(itd, &sc->sc_freeitds, u.free_list) { if (itd == NULL) break; if (itd->slot != frindex && itd->slot != previndex) { freeitd = itd; break; } } if (freeitd == NULL) { USBHIST_LOG(ehcidebug, "allocating chunk", 0, 0, 0, 0); err = usb_allocmem(&sc->sc_bus, EHCI_ITD_SIZE * EHCI_ITD_CHUNK, EHCI_PAGE_SIZE, &dma); if (err) { USBHIST_LOG(ehcidebug, "alloc returned %d", err, 0, 0, 0); mutex_exit(&sc->sc_lock); return NULL; } for (i = 0; i < EHCI_ITD_CHUNK; i++) { offs = i * EHCI_ITD_SIZE; itd = KERNADDR(&dma, offs); itd->physaddr = DMAADDR(&dma, offs); itd->dma = dma; itd->offs = offs; LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list); } freeitd = LIST_FIRST(&sc->sc_freeitds); } itd = freeitd; LIST_REMOVE(itd, u.free_list); memset(&itd->itd, 0, sizeof(ehci_itd_t)); usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); itd->u.frame_list.next = NULL; itd->u.frame_list.prev = NULL; itd->xfer_next = NULL; itd->slot = 0; mutex_exit(&sc->sc_lock); return itd; } Static void ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd) { KASSERT(mutex_owned(&sc->sc_lock)); LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list); } /****************/ /* * Close a reqular pipe. * Assumes that there are no pending transactions. */ Static void ehci_close_pipe(usbd_pipe_handle pipe, ehci_soft_qh_t *head) { struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; ehci_softc_t *sc = pipe->device->bus->hci_private; ehci_soft_qh_t *sqh = epipe->sqh; KASSERT(mutex_owned(&sc->sc_lock)); ehci_rem_qh(sc, sqh, head); ehci_free_sqh(sc, epipe->sqh); } /* * Abort a device request. * If this routine is called at splusb() it guarantees that the request * will be removed from the hardware scheduling and that the callback * for it will be called with USBD_CANCELLED status. * It's impossible to guarantee that the requested transfer will not * have happened since the hardware runs concurrently. * If the transaction has already happened we rely on the ordinary * interrupt processing to process it. * XXX This is most probably wrong. * XXXMRG this doesn't make sense anymore. */ Static void ehci_abort_xfer(usbd_xfer_handle xfer, usbd_status status) { #define exfer EXFER(xfer) struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; ehci_softc_t *sc = epipe->pipe.device->bus->hci_private; ehci_soft_qh_t *sqh = epipe->sqh; ehci_soft_qtd_t *sqtd; ehci_physaddr_t cur; u_int32_t qhstatus; int hit; int wake; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p pipe=%p", xfer, epipe, 0, 0); KASSERT(mutex_owned(&sc->sc_lock)); if (sc->sc_dying) { /* If we're dying, just do the software part. */ xfer->status = status; /* make software ignore it */ callout_stop(&xfer->timeout_handle); usb_transfer_complete(xfer); return; } if (cpu_intr_p() || cpu_softintr_p()) panic("ehci_abort_xfer: not in process context"); /* * If an abort is already in progress then just wait for it to * complete and return. */ if (xfer->hcflags & UXFER_ABORTING) { USBHIST_LOG(ehcidebug, "already aborting", 0, 0, 0, 0); #ifdef DIAGNOSTIC if (status == USBD_TIMEOUT) printf("ehci_abort_xfer: TIMEOUT while aborting\n"); #endif /* Override the status which might be USBD_TIMEOUT. */ xfer->status = status; USBHIST_LOG(ehcidebug, "waiting for abort to finish", 0, 0, 0, 0); xfer->hcflags |= UXFER_ABORTWAIT; while (xfer->hcflags & UXFER_ABORTING) cv_wait(&xfer->hccv, &sc->sc_lock); return; } xfer->hcflags |= UXFER_ABORTING; /* * Step 1: Make interrupt routine and hardware ignore xfer. */ xfer->status = status; /* make software ignore it */ callout_stop(&xfer->timeout_handle); usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), sizeof(sqh->qh.qh_qtd.qtd_status), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); qhstatus = sqh->qh.qh_qtd.qtd_status; sqh->qh.qh_qtd.qtd_status = qhstatus | htole32(EHCI_QTD_HALTED); usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), sizeof(sqh->qh.qh_qtd.qtd_status), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) { usb_syncmem(&sqtd->dma, sqtd->offs + offsetof(ehci_qtd_t, qtd_status), sizeof(sqtd->qtd.qtd_status), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); sqtd->qtd.qtd_status |= htole32(EHCI_QTD_HALTED); usb_syncmem(&sqtd->dma, sqtd->offs + offsetof(ehci_qtd_t, qtd_status), sizeof(sqtd->qtd.qtd_status), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); if (sqtd == exfer->sqtdend) break; } /* * Step 2: Wait until we know hardware has finished any possible * use of the xfer. Also make sure the soft interrupt routine * has run. */ ehci_sync_hc(sc); sc->sc_softwake = 1; usb_schedsoftintr(&sc->sc_bus); cv_wait(&sc->sc_softwake_cv, &sc->sc_lock); /* * Step 3: Remove any vestiges of the xfer from the hardware. * The complication here is that the hardware may have executed * beyond the xfer we're trying to abort. So as we're scanning * the TDs of this xfer we check if the hardware points to * any of them. */ usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_curqtd), sizeof(sqh->qh.qh_curqtd), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); cur = EHCI_LINK_ADDR(le32toh(sqh->qh.qh_curqtd)); hit = 0; for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) { hit |= cur == sqtd->physaddr; if (sqtd == exfer->sqtdend) break; } sqtd = sqtd->nextqtd; /* Zap curqtd register if hardware pointed inside the xfer. */ if (hit && sqtd != NULL) { USBHIST_LOG(ehcidebug, "cur=0x%08x", sqtd->physaddr, 0, 0, 0); sqh->qh.qh_curqtd = htole32(sqtd->physaddr); /* unlink qTDs */ usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_curqtd), sizeof(sqh->qh.qh_curqtd), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); sqh->qh.qh_qtd.qtd_status = qhstatus; usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), sizeof(sqh->qh.qh_qtd.qtd_status), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } else { USBHIST_LOG(ehcidebug, "no hit", 0, 0, 0, 0); } /* * Step 4: Execute callback. */ #ifdef DIAGNOSTIC exfer->isdone = 1; #endif wake = xfer->hcflags & UXFER_ABORTWAIT; xfer->hcflags &= ~(UXFER_ABORTING | UXFER_ABORTWAIT); usb_transfer_complete(xfer); if (wake) { cv_broadcast(&xfer->hccv); } KASSERT(mutex_owned(&sc->sc_lock)); #undef exfer } Static void ehci_abort_isoc_xfer(usbd_xfer_handle xfer, usbd_status status) { ehci_isoc_trans_t trans_status; struct ehci_pipe *epipe; struct ehci_xfer *exfer; ehci_softc_t *sc; struct ehci_soft_itd *itd; int i, wake; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); epipe = (struct ehci_pipe *) xfer->pipe; exfer = EXFER(xfer); sc = epipe->pipe.device->bus->hci_private; USBHIST_LOG(ehcidebug, "xfer %p pipe %p", xfer, epipe, 0, 0); KASSERT(mutex_owned(&sc->sc_lock)); if (sc->sc_dying) { xfer->status = status; callout_stop(&xfer->timeout_handle); usb_transfer_complete(xfer); return; } if (xfer->hcflags & UXFER_ABORTING) { USBHIST_LOG(ehcidebug, "already aborting", 0, 0, 0, 0); #ifdef DIAGNOSTIC if (status == USBD_TIMEOUT) printf("ehci_abort_isoc_xfer: TIMEOUT while aborting\n"); #endif xfer->status = status; USBHIST_LOG(ehcidebug, "waiting for abort to finish", 0, 0, 0, 0); xfer->hcflags |= UXFER_ABORTWAIT; while (xfer->hcflags & UXFER_ABORTING) cv_wait(&xfer->hccv, &sc->sc_lock); goto done; } xfer->hcflags |= UXFER_ABORTING; xfer->status = status; callout_stop(&xfer->timeout_handle); for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_ctl), sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); for (i = 0; i < 8; i++) { trans_status = le32toh(itd->itd.itd_ctl[i]); trans_status &= ~EHCI_ITD_ACTIVE; itd->itd.itd_ctl[i] = htole32(trans_status); } usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_ctl), sizeof(itd->itd.itd_ctl), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } sc->sc_softwake = 1; usb_schedsoftintr(&sc->sc_bus); cv_wait(&sc->sc_softwake_cv, &sc->sc_lock); #ifdef DIAGNOSTIC exfer->isdone = 1; #endif wake = xfer->hcflags & UXFER_ABORTWAIT; xfer->hcflags &= ~(UXFER_ABORTING | UXFER_ABORTWAIT); usb_transfer_complete(xfer); if (wake) { cv_broadcast(&xfer->hccv); } done: KASSERT(mutex_owned(&sc->sc_lock)); return; } Static void ehci_timeout(void *addr) { struct ehci_xfer *exfer = addr; struct ehci_pipe *epipe = (struct ehci_pipe *)exfer->xfer.pipe; ehci_softc_t *sc = epipe->pipe.device->bus->hci_private; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "exfer %p", exfer, 0, 0, 0); #ifdef EHCI_DEBUG if (ehcidebug > 1) usbd_dump_pipe(exfer->xfer.pipe); #endif if (sc->sc_dying) { mutex_enter(&sc->sc_lock); ehci_abort_xfer(&exfer->xfer, USBD_TIMEOUT); mutex_exit(&sc->sc_lock); return; } /* Execute the abort in a process context. */ usb_init_task(&exfer->abort_task, ehci_timeout_task, addr, USB_TASKQ_MPSAFE); usb_add_task(exfer->xfer.pipe->device, &exfer->abort_task, USB_TASKQ_HC); } Static void ehci_timeout_task(void *addr) { usbd_xfer_handle xfer = addr; ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p", xfer, 0, 0, 0); mutex_enter(&sc->sc_lock); ehci_abort_xfer(xfer, USBD_TIMEOUT); mutex_exit(&sc->sc_lock); } /************************/ Static usbd_status ehci_device_ctrl_transfer(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; /* Insert last in queue. */ mutex_enter(&sc->sc_lock); err = usb_insert_transfer(xfer); mutex_exit(&sc->sc_lock); if (err) return (err); /* Pipe isn't running, start first */ return (ehci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); } Static usbd_status ehci_device_ctrl_start(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; if (sc->sc_dying) return (USBD_IOERROR); #ifdef DIAGNOSTIC if (!(xfer->rqflags & URQ_REQUEST)) { /* XXX panic */ printf("ehci_device_ctrl_transfer: not a request\n"); return (USBD_INVAL); } #endif err = ehci_device_request(xfer); if (err) { return (err); } if (sc->sc_bus.use_polling) ehci_waitintr(sc, xfer); return (USBD_IN_PROGRESS); } Static void ehci_device_ctrl_done(usbd_xfer_handle xfer) { struct ehci_xfer *ex = EXFER(xfer); ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; usb_device_request_t *req = &xfer->request; int len = UGETW(req->wLength); int rd = req->bmRequestType & UT_READ; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p", xfer, 0, 0, 0); KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); #ifdef DIAGNOSTIC if (!(xfer->rqflags & URQ_REQUEST)) { panic("ehci_ctrl_done: not a request"); } #endif if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { ehci_del_intr_list(sc, ex); /* remove from active list */ ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); usb_syncmem(&epipe->u.ctl.reqdma, 0, sizeof *req, BUS_DMASYNC_POSTWRITE); if (len) usb_syncmem(&xfer->dmabuf, 0, len, rd ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); } USBHIST_LOG(ehcidebug, "length=%d", xfer->actlen, 0, 0, 0); } /* Abort a device control request. */ Static void ehci_device_ctrl_abort(usbd_xfer_handle xfer) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p", xfer, 0, 0, 0); ehci_abort_xfer(xfer, USBD_CANCELLED); } /* Close a device control pipe. */ Static void ehci_device_ctrl_close(usbd_pipe_handle pipe) { ehci_softc_t *sc = pipe->device->bus->hci_private; /*struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;*/ USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); KASSERT(mutex_owned(&sc->sc_lock)); USBHIST_LOG(ehcidebug, "pipe=%p", pipe, 0, 0, 0); ehci_close_pipe(pipe, sc->sc_async_head); } Static usbd_status ehci_device_request(usbd_xfer_handle xfer) { #define exfer EXFER(xfer) struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; usb_device_request_t *req = &xfer->request; usbd_device_handle dev = epipe->pipe.device; ehci_softc_t *sc = dev->bus->hci_private; ehci_soft_qtd_t *setup, *stat, *next; ehci_soft_qh_t *sqh; int isread; int len; usbd_status err; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); isread = req->bmRequestType & UT_READ; len = UGETW(req->wLength); USBHIST_LOG(ehcidebug, "type=0x%02x, request=0x%02x, " "wValue=0x%04x, wIndex=0x%04x", req->bmRequestType, req->bRequest, UGETW(req->wValue), UGETW(req->wIndex)); USBHIST_LOG(ehcidebug, "len=%d, addr=%d, endpt=%d", len, dev->address, epipe->pipe.endpoint->edesc->bEndpointAddress, 0); setup = ehci_alloc_sqtd(sc); if (setup == NULL) { err = USBD_NOMEM; goto bad1; } stat = ehci_alloc_sqtd(sc); if (stat == NULL) { err = USBD_NOMEM; goto bad2; } mutex_enter(&sc->sc_lock); sqh = epipe->sqh; KASSERTMSG(EHCI_QH_GET_ADDR(le32toh(sqh->qh.qh_endp)) == dev->address, "address QH %d pipe %d\n", EHCI_QH_GET_ADDR(le32toh(sqh->qh.qh_endp)), dev->address); KASSERTMSG(EHCI_QH_GET_MPL(le32toh(sqh->qh.qh_endp)) == UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize), "MPS QH %d pipe %d\n", EHCI_QH_GET_MPL(le32toh(sqh->qh.qh_endp)), UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize)); /* Set up data transaction */ if (len != 0) { ehci_soft_qtd_t *end; /* Start toggle at 1. */ epipe->nexttoggle = 1; err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &next, &end); if (err) goto bad3; end->qtd.qtd_status &= htole32(~EHCI_QTD_IOC); end->nextqtd = stat; end->qtd.qtd_next = end->qtd.qtd_altnext = htole32(stat->physaddr); usb_syncmem(&end->dma, end->offs, sizeof(end->qtd), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); } else { next = stat; } memcpy(KERNADDR(&epipe->u.ctl.reqdma, 0), req, sizeof *req); usb_syncmem(&epipe->u.ctl.reqdma, 0, sizeof *req, BUS_DMASYNC_PREWRITE); /* Clear toggle */ setup->qtd.qtd_status = htole32( EHCI_QTD_ACTIVE | EHCI_QTD_SET_PID(EHCI_QTD_PID_SETUP) | EHCI_QTD_SET_CERR(3) | EHCI_QTD_SET_TOGGLE(0) | EHCI_QTD_SET_BYTES(sizeof *req) ); setup->qtd.qtd_buffer[0] = htole32(DMAADDR(&epipe->u.ctl.reqdma, 0)); setup->qtd.qtd_buffer_hi[0] = 0; setup->nextqtd = next; setup->qtd.qtd_next = setup->qtd.qtd_altnext = htole32(next->physaddr); setup->xfer = xfer; setup->len = sizeof *req; usb_syncmem(&setup->dma, setup->offs, sizeof(setup->qtd), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); stat->qtd.qtd_status = htole32( EHCI_QTD_ACTIVE | EHCI_QTD_SET_PID(isread ? EHCI_QTD_PID_OUT : EHCI_QTD_PID_IN) | EHCI_QTD_SET_CERR(3) | EHCI_QTD_SET_TOGGLE(1) | EHCI_QTD_IOC ); stat->qtd.qtd_buffer[0] = 0; /* XXX not needed? */ stat->qtd.qtd_buffer_hi[0] = 0; /* XXX not needed? */ stat->nextqtd = NULL; stat->qtd.qtd_next = stat->qtd.qtd_altnext = EHCI_NULL; stat->xfer = xfer; stat->len = 0; usb_syncmem(&stat->dma, stat->offs, sizeof(stat->qtd), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); #ifdef EHCI_DEBUG USBHIST_LOGN(ehcidebug, 5, "dump:", 0, 0, 0, 0); ehci_dump_sqh(sqh); ehci_dump_sqtds(setup); #endif exfer->sqtdstart = setup; exfer->sqtdend = stat; #ifdef DIAGNOSTIC if (!exfer->isdone) { printf("ehci_device_request: not done, exfer=%p\n", exfer); } exfer->isdone = 0; #endif /* Insert qTD in QH list. */ ehci_set_qh_qtd(sqh, setup); /* also does usb_syncmem(sqh) */ if (xfer->timeout && !sc->sc_bus.use_polling) { callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), ehci_timeout, xfer); } ehci_add_intr_list(sc, exfer); xfer->status = USBD_IN_PROGRESS; mutex_exit(&sc->sc_lock); #ifdef EHCI_DEBUG USBHIST_LOGN(ehcidebug, 10, "status=%x, dump:", EOREAD4(sc, EHCI_USBSTS), 0, 0, 0); // delay(10000); ehci_dump_regs(sc); ehci_dump_sqh(sc->sc_async_head); ehci_dump_sqh(sqh); ehci_dump_sqtds(setup); #endif return (USBD_NORMAL_COMPLETION); bad3: mutex_exit(&sc->sc_lock); ehci_free_sqtd(sc, stat); bad2: ehci_free_sqtd(sc, setup); bad1: USBHIST_LOG(ehcidebug, "no memory", 0, 0, 0, 0); mutex_enter(&sc->sc_lock); xfer->status = err; usb_transfer_complete(xfer); mutex_exit(&sc->sc_lock); return (err); #undef exfer } /* * Some EHCI chips from VIA seem to trigger interrupts before writing back the * qTD status, or miss signalling occasionally under heavy load. If the host * machine is too fast, we we can miss transaction completion - when we scan * the active list the transaction still seems to be active. This generally * exhibits itself as a umass stall that never recovers. * * We work around this behaviour by setting up this callback after any softintr * that completes with transactions still pending, giving us another chance to * check for completion after the writeback has taken place. */ Static void ehci_intrlist_timeout(void *arg) { ehci_softc_t *sc = arg; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); usb_schedsoftintr(&sc->sc_bus); } /************************/ Static usbd_status ehci_device_bulk_transfer(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; /* Insert last in queue. */ mutex_enter(&sc->sc_lock); err = usb_insert_transfer(xfer); mutex_exit(&sc->sc_lock); if (err) return (err); /* Pipe isn't running, start first */ return (ehci_device_bulk_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); } Static usbd_status ehci_device_bulk_start(usbd_xfer_handle xfer) { #define exfer EXFER(xfer) struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; usbd_device_handle dev = epipe->pipe.device; ehci_softc_t *sc = dev->bus->hci_private; ehci_soft_qtd_t *data, *dataend; ehci_soft_qh_t *sqh; usbd_status err; int len, isread, endpt; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p len=%d flags=%d", xfer, xfer->length, xfer->flags, 0); if (sc->sc_dying) return (USBD_IOERROR); #ifdef DIAGNOSTIC if (xfer->rqflags & URQ_REQUEST) panic("ehci_device_bulk_start: a request"); #endif mutex_enter(&sc->sc_lock); len = xfer->length; endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; isread = UE_GET_DIR(endpt) == UE_DIR_IN; sqh = epipe->sqh; epipe->u.bulk.length = len; err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, &dataend); if (err) { USBHIST_LOG(ehcidebug, "no memory", 0, 0, 0, 0); xfer->status = err; usb_transfer_complete(xfer); mutex_exit(&sc->sc_lock); return (err); } #ifdef EHCI_DEBUG USBHIST_LOGN(ehcidebug, 5, "data(1):", 0, 0, 0, 0); ehci_dump_sqh(sqh); ehci_dump_sqtds(data); #endif /* Set up interrupt info. */ exfer->sqtdstart = data; exfer->sqtdend = dataend; #ifdef DIAGNOSTIC if (!exfer->isdone) { printf("ehci_device_bulk_start: not done, ex=%p\n", exfer); } exfer->isdone = 0; #endif ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ if (xfer->timeout && !sc->sc_bus.use_polling) { callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), ehci_timeout, xfer); } ehci_add_intr_list(sc, exfer); xfer->status = USBD_IN_PROGRESS; mutex_exit(&sc->sc_lock); #ifdef EHCI_DEBUG USBHIST_LOGN(ehcidebug, 5, "data(2)", 0, 0, 0, 0); // delay(10000); USBHIST_LOGN(ehcidebug, 5, "data(3)", 0, 0, 0, 0); ehci_dump_regs(sc); #if 0 printf("async_head:\n"); ehci_dump_sqh(sc->sc_async_head); #endif USBHIST_LOG(ehcidebug, "sqh:", 0, 0, 0, 0); ehci_dump_sqh(sqh); ehci_dump_sqtds(data); #endif if (sc->sc_bus.use_polling) ehci_waitintr(sc, xfer); return (USBD_IN_PROGRESS); #undef exfer } Static void ehci_device_bulk_abort(usbd_xfer_handle xfer) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer %p", xfer, 0, 0, 0); ehci_abort_xfer(xfer, USBD_CANCELLED); } /* * Close a device bulk pipe. */ Static void ehci_device_bulk_close(usbd_pipe_handle pipe) { ehci_softc_t *sc = pipe->device->bus->hci_private; struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); KASSERT(mutex_owned(&sc->sc_lock)); USBHIST_LOG(ehcidebug, "pipe=%p", pipe, 0, 0, 0); pipe->endpoint->datatoggle = epipe->nexttoggle; ehci_close_pipe(pipe, sc->sc_async_head); } Static void ehci_device_bulk_done(usbd_xfer_handle xfer) { struct ehci_xfer *ex = EXFER(xfer); ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; int endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; int rd = UE_GET_DIR(endpt) == UE_DIR_IN; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p, actlen=%d", xfer, xfer->actlen, 0, 0); KASSERT(mutex_owned(&sc->sc_lock)); if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { ehci_del_intr_list(sc, ex); /* remove from active list */ ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); usb_syncmem(&xfer->dmabuf, 0, xfer->length, rd ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); } USBHIST_LOG(ehcidebug, "length=%d", xfer->actlen, 0, 0, 0); } /************************/ Static usbd_status ehci_device_setintr(ehci_softc_t *sc, ehci_soft_qh_t *sqh, int ival) { struct ehci_soft_islot *isp; int islot, lev; /* Find a poll rate that is large enough. */ for (lev = EHCI_IPOLLRATES - 1; lev > 0; lev--) if (EHCI_ILEV_IVAL(lev) <= ival) break; /* Pick an interrupt slot at the right level. */ /* XXX could do better than picking at random */ sc->sc_rand = (sc->sc_rand + 191) % sc->sc_flsize; islot = EHCI_IQHIDX(lev, sc->sc_rand); sqh->islot = islot; isp = &sc->sc_islots[islot]; mutex_enter(&sc->sc_lock); ehci_add_qh(sc, sqh, isp->sqh); mutex_exit(&sc->sc_lock); return (USBD_NORMAL_COMPLETION); } Static usbd_status ehci_device_intr_transfer(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; /* Insert last in queue. */ mutex_enter(&sc->sc_lock); err = usb_insert_transfer(xfer); mutex_exit(&sc->sc_lock); if (err) return (err); /* * Pipe isn't running (otherwise err would be USBD_INPROG), * so start it first. */ return (ehci_device_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); } Static usbd_status ehci_device_intr_start(usbd_xfer_handle xfer) { #define exfer EXFER(xfer) struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; usbd_device_handle dev = xfer->pipe->device; ehci_softc_t *sc = dev->bus->hci_private; ehci_soft_qtd_t *data, *dataend; ehci_soft_qh_t *sqh; usbd_status err; int len, isread, endpt; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p len=%d flags=%d", xfer, xfer->length, xfer->flags, 0); if (sc->sc_dying) return (USBD_IOERROR); #ifdef DIAGNOSTIC if (xfer->rqflags & URQ_REQUEST) panic("ehci_device_intr_start: a request"); #endif mutex_enter(&sc->sc_lock); len = xfer->length; endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; isread = UE_GET_DIR(endpt) == UE_DIR_IN; sqh = epipe->sqh; epipe->u.intr.length = len; err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, &dataend); if (err) { USBHIST_LOG(ehcidebug, "no memory", 0, 0, 0, 0); xfer->status = err; usb_transfer_complete(xfer); mutex_exit(&sc->sc_lock); return (err); } #ifdef EHCI_DEBUG USBHIST_LOGN(ehcidebug, 5, "data(1)", 0, 0, 0, 0); ehci_dump_sqh(sqh); ehci_dump_sqtds(data); #endif /* Set up interrupt info. */ exfer->sqtdstart = data; exfer->sqtdend = dataend; #ifdef DIAGNOSTIC if (!exfer->isdone) { printf("ehci_device_intr_start: not done, ex=%p\n", exfer); } exfer->isdone = 0; #endif ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ if (xfer->timeout && !sc->sc_bus.use_polling) { callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), ehci_timeout, xfer); } ehci_add_intr_list(sc, exfer); xfer->status = USBD_IN_PROGRESS; mutex_exit(&sc->sc_lock); #ifdef EHCI_DEBUG USBHIST_LOGN(ehcidebug, 5, "data(2)", 0, 0, 0, 0); // delay(10000); USBHIST_LOGN(ehcidebug, 5, "data(3)", 0, 0, 0, 0); ehci_dump_regs(sc); USBHIST_LOGN(ehcidebug, 5, "sqh:", 0, 0, 0, 0); ehci_dump_sqh(sqh); ehci_dump_sqtds(data); #endif if (sc->sc_bus.use_polling) ehci_waitintr(sc, xfer); return (USBD_IN_PROGRESS); #undef exfer } Static void ehci_device_intr_abort(usbd_xfer_handle xfer) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p", xfer, 0, 0, 0); KASSERT(xfer->pipe->intrxfer == xfer); /* * XXX - abort_xfer uses ehci_sync_hc, which syncs via the advance * async doorbell. That's dependent on the async list, wheras * intr xfers are periodic, should not use this? */ ehci_abort_xfer(xfer, USBD_CANCELLED); } Static void ehci_device_intr_close(usbd_pipe_handle pipe) { ehci_softc_t *sc = pipe->device->bus->hci_private; struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; struct ehci_soft_islot *isp; KASSERT(mutex_owned(&sc->sc_lock)); isp = &sc->sc_islots[epipe->sqh->islot]; ehci_close_pipe(pipe, isp->sqh); } Static void ehci_device_intr_done(usbd_xfer_handle xfer) { #define exfer EXFER(xfer) struct ehci_xfer *ex = EXFER(xfer); ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; ehci_soft_qtd_t *data, *dataend; ehci_soft_qh_t *sqh; usbd_status err; int len, isread, endpt; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer=%p, actlen=%d", xfer, xfer->actlen, 0, 0); KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); if (xfer->pipe->repeat) { ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); len = epipe->u.intr.length; xfer->length = len; endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; isread = UE_GET_DIR(endpt) == UE_DIR_IN; usb_syncmem(&xfer->dmabuf, 0, len, isread ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); sqh = epipe->sqh; err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, &dataend); if (err) { USBHIST_LOG(ehcidebug, "no memory", 0, 0, 0, 0); xfer->status = err; return; } /* Set up interrupt info. */ exfer->sqtdstart = data; exfer->sqtdend = dataend; #ifdef DIAGNOSTIC if (!exfer->isdone) { USBHIST_LOG(ehcidebug, "marked not done, ex = %p", exfer, 0, 0, 0); printf("ehci_device_intr_done: not done, ex=%p\n", exfer); } exfer->isdone = 0; #endif ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ if (xfer->timeout && !sc->sc_bus.use_polling) { callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), ehci_timeout, xfer); } xfer->status = USBD_IN_PROGRESS; } else if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { ehci_del_intr_list(sc, ex); /* remove from active list */ ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; isread = UE_GET_DIR(endpt) == UE_DIR_IN; usb_syncmem(&xfer->dmabuf, 0, xfer->length, isread ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); } #undef exfer } /************************/ Static usbd_status ehci_device_isoc_transfer(usbd_xfer_handle xfer) { ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; usbd_status err; mutex_enter(&sc->sc_lock); err = usb_insert_transfer(xfer); mutex_exit(&sc->sc_lock); if (err && err != USBD_IN_PROGRESS) return err; return ehci_device_isoc_start(xfer); } Static usbd_status ehci_device_isoc_start(usbd_xfer_handle xfer) { struct ehci_pipe *epipe; ehci_softc_t *sc; struct ehci_xfer *exfer; ehci_soft_itd_t *itd, *prev, *start, *stop; usb_dma_t *dma_buf; int i, j, k, frames, uframes, ufrperframe; int trans_count, offs, total_length; int frindex; USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); start = NULL; prev = NULL; itd = NULL; trans_count = 0; total_length = 0; exfer = (struct ehci_xfer *) xfer; sc = xfer->pipe->device->bus->hci_private; epipe = (struct ehci_pipe *)xfer->pipe; /* * To allow continuous transfers, above we start all transfers * immediately. However, we're still going to get usbd_start_next call * this when another xfer completes. So, check if this is already * in progress or not */ if (exfer->itdstart != NULL) return USBD_IN_PROGRESS; USBHIST_LOG(ehcidebug, "xfer %p len %d flags %d", xfer, xfer->length, xfer->flags, 0); if (sc->sc_dying) return USBD_IOERROR; /* * To avoid complication, don't allow a request right now that'll span * the entire frame table. To within 4 frames, to allow some leeway * on either side of where the hc currently is. */ if ((1 << (epipe->pipe.endpoint->edesc->bInterval)) * xfer->nframes >= (sc->sc_flsize - 4) * 8) { USBHIST_LOG(ehcidebug, "isoc descriptor spans entire frametable", 0, 0, 0, 0); printf("ehci: isoc descriptor requested that spans the entire frametable, too many frames\n"); return USBD_INVAL; } #ifdef DIAGNOSTIC if (xfer->rqflags & URQ_REQUEST) panic("ehci_device_isoc_start: request\n"); if (!exfer->isdone) { USBHIST_LOG(ehcidebug, "marked not done, ex = %p", exfer, 0, 0, 0); printf("ehci_device_isoc_start: not done, ex = %p\n", exfer); } exfer->isdone = 0; #endif /* * Step 1: Allocate and initialize itds, how many do we need? * One per transfer if interval >= 8 microframes, fewer if we use * multiple microframes per frame. */ i = epipe->pipe.endpoint->edesc->bInterval; if (i > 16 || i == 0) { /* Spec page 271 says intervals > 16 are invalid */ USBHIST_LOG(ehcidebug, "bInvertal %d invalid", i, 0, 0, 0); return USBD_INVAL; } ufrperframe = max(1, USB_UFRAMES_PER_FRAME / (1 << (i - 1))); frames = (xfer->nframes + (ufrperframe - 1)) / ufrperframe; uframes = USB_UFRAMES_PER_FRAME / ufrperframe; if (frames == 0) { USBHIST_LOG(ehcidebug, "frames == 0", 0, 0, 0, 0); return USBD_INVAL; } dma_buf = &xfer->dmabuf; offs = 0; for (i = 0; i < frames; i++) { int froffs = offs; itd = ehci_alloc_itd(sc); if (prev != NULL) { prev->itd.itd_next = htole32(itd->physaddr | EHCI_LINK_ITD); usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), sizeof(itd->itd.itd_next), BUS_DMASYNC_POSTWRITE); prev->xfer_next = itd; } else { start = itd; } /* * Step 1.5, initialize uframes */ for (j = 0; j < EHCI_ITD_NUFRAMES; j += uframes) { /* Calculate which page in the list this starts in */ int addr = DMAADDR(dma_buf, froffs); addr = EHCI_PAGE_OFFSET(addr); addr += (offs - froffs); addr = EHCI_PAGE(addr); addr /= EHCI_PAGE_SIZE; /* This gets the initial offset into the first page, * looks how far further along the current uframe * offset is. Works out how many pages that is. */ itd->itd.itd_ctl[j] = htole32 ( EHCI_ITD_ACTIVE | EHCI_ITD_SET_LEN(xfer->frlengths[trans_count]) | EHCI_ITD_SET_PG(addr) | EHCI_ITD_SET_OFFS(EHCI_PAGE_OFFSET(DMAADDR(dma_buf,offs)))); total_length += xfer->frlengths[trans_count]; offs += xfer->frlengths[trans_count]; trans_count++; if (trans_count >= xfer->nframes) { /*Set IOC*/ itd->itd.itd_ctl[j] |= htole32(EHCI_ITD_IOC); break; } } /* Step 1.75, set buffer pointers. To simplify matters, all * pointers are filled out for the next 7 hardware pages in * the dma block, so no need to worry what pages to cover * and what to not. */ for (j = 0; j < EHCI_ITD_NBUFFERS; j++) { /* * Don't try to lookup a page that's past the end * of buffer */ int page_offs = EHCI_PAGE(froffs + (EHCI_PAGE_SIZE * j)); if (page_offs >= dma_buf->block->size) break; unsigned long long page = DMAADDR(dma_buf, page_offs); page = EHCI_PAGE(page); itd->itd.itd_bufr[j] = htole32(EHCI_ITD_SET_BPTR(page)); itd->itd.itd_bufr_hi[j] = htole32(page >> 32); } /* * Other special values */ k = epipe->pipe.endpoint->edesc->bEndpointAddress; itd->itd.itd_bufr[0] |= htole32(EHCI_ITD_SET_EP(UE_GET_ADDR(k)) | EHCI_ITD_SET_DADDR(epipe->pipe.device->address)); k = (UE_GET_DIR(epipe->pipe.endpoint->edesc->bEndpointAddress)) ? 1 : 0; j = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize); itd->itd.itd_bufr[1] |= htole32(EHCI_ITD_SET_DIR(k) | EHCI_ITD_SET_MAXPKT(UE_GET_SIZE(j))); /* FIXME: handle invalid trans */ itd->itd.itd_bufr[2] |= htole32(EHCI_ITD_SET_MULTI(UE_GET_TRANS(j)+1)); usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), sizeof(ehci_itd_t), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); prev = itd; } /* End of frame */ stop = itd; stop->xfer_next = NULL; exfer->isoc_len = total_length; usb_syncmem(&exfer->xfer.dmabuf, 0, total_length, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); /* * Part 2: Transfer descriptors have now been set up, now they must * be scheduled into the period frame list. Erk. Not wanting to * complicate matters, transfer is denied if the transfer spans * more than the period frame list. */ mutex_enter(&sc->sc_lock); /* Start inserting frames */ if (epipe->u.isoc.cur_xfers > 0) { frindex = epipe->u.isoc.next_frame; } else { frindex = EOREAD4(sc, EHCI_FRINDEX); frindex = frindex >> 3; /* Erase microframe index */ frindex += 2; } if (frindex >= sc->sc_flsize) frindex &= (sc->sc_flsize - 1); /* What's the frame interval? */ i = (1 << (epipe->pipe.endpoint->edesc->bInterval - 1)); if (i / USB_UFRAMES_PER_FRAME == 0) i = 1; else i /= USB_UFRAMES_PER_FRAME; itd = start; for (j = 0; j < frames; j++) { if (itd == NULL) panic("ehci: unexpectedly ran out of isoc itds, isoc_start\n"); itd->itd.itd_next = sc->sc_flist[frindex]; if (itd->itd.itd_next == 0) /* FIXME: frindex table gets initialized to NULL * or EHCI_NULL? */ itd->itd.itd_next = EHCI_NULL; usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); sc->sc_flist[frindex] = htole32(EHCI_LINK_ITD | itd->physaddr); usb_syncmem(&sc->sc_fldma, sizeof(ehci_link_t) * frindex, sizeof(ehci_link_t), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); itd->u.frame_list.next = sc->sc_softitds[frindex]; sc->sc_softitds[frindex] = itd; if (itd->u.frame_list.next != NULL) itd->u.frame_list.next->u.frame_list.prev = itd; itd->slot = frindex; itd->u.frame_list.prev = NULL; frindex += i; if (frindex >= sc->sc_flsize) frindex -= sc->sc_flsize; itd = itd->xfer_next; } epipe->u.isoc.cur_xfers++; epipe->u.isoc.next_frame = frindex; exfer->itdstart = start; exfer->itdend = stop; exfer->sqtdstart = NULL; exfer->sqtdend = NULL; ehci_add_intr_list(sc, exfer); xfer->status = USBD_IN_PROGRESS; xfer->done = 0; mutex_exit(&sc->sc_lock); if (sc->sc_bus.use_polling) { printf("Starting ehci isoc xfer with polling. Bad idea?\n"); ehci_waitintr(sc, xfer); } return USBD_IN_PROGRESS; } Static void ehci_device_isoc_abort(usbd_xfer_handle xfer) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "xfer = %p", xfer, 0, 0, 0); ehci_abort_isoc_xfer(xfer, USBD_CANCELLED); } Static void ehci_device_isoc_close(usbd_pipe_handle pipe) { USBHIST_FUNC(); USBHIST_CALLED(ehcidebug); USBHIST_LOG(ehcidebug, "nothing in the pipe to free?", 0, 0, 0, 0); } Static void ehci_device_isoc_done(usbd_xfer_handle xfer) { struct ehci_xfer *exfer; ehci_softc_t *sc; struct ehci_pipe *epipe; exfer = EXFER(xfer); sc = xfer->pipe->device->bus->hci_private; epipe = (struct ehci_pipe *) xfer->pipe; KASSERT(mutex_owned(&sc->sc_lock)); epipe->u.isoc.cur_xfers--; if (xfer->status != USBD_NOMEM && ehci_active_intr_list(exfer)) { ehci_del_intr_list(sc, exfer); ehci_rem_free_itd_chain(sc, exfer); } usb_syncmem(&xfer->dmabuf, 0, xfer->length, BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); }