/* $NetBSD: if_udav.c,v 1.2 2003/09/04 15:17:38 tsutsui Exp $ */ /* $nabe: if_udav.c,v 1.3 2003/08/21 16:57:19 nabe Exp $ */ /* $FreeBSD$ */ /*- * Copyright (c) 2003 * Shingo WATANABE . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ /* * DM9601(DAVICOM USB to Ethernet MAC Controller with Integrated 10/100 PHY) * The spec can be found at the following url. * http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf */ /* * TODO: * Interrupt Endpoint support * External PHYs */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usbdevs.h" #define USB_DEBUG_VAR udav_debug #include #include #include #include /* prototypes */ static device_probe_t udav_probe; static device_attach_t udav_attach; static device_detach_t udav_detach; static usb_callback_t udav_bulk_write_callback; static usb_callback_t udav_bulk_read_callback; static usb_callback_t udav_intr_callback; static uether_fn_t udav_attach_post; static uether_fn_t udav_init; static uether_fn_t udav_stop; static uether_fn_t udav_start; static uether_fn_t udav_tick; static uether_fn_t udav_setmulti; static uether_fn_t udav_setpromisc; static int udav_csr_read(struct udav_softc *, uint16_t, void *, int); static int udav_csr_write(struct udav_softc *, uint16_t, void *, int); static uint8_t udav_csr_read1(struct udav_softc *, uint16_t); static int udav_csr_write1(struct udav_softc *, uint16_t, uint8_t); static void udav_reset(struct udav_softc *); static int udav_ifmedia_upd(struct ifnet *); static void udav_ifmedia_status(struct ifnet *, struct ifmediareq *); static miibus_readreg_t udav_miibus_readreg; static miibus_writereg_t udav_miibus_writereg; static miibus_statchg_t udav_miibus_statchg; static const struct usb_config udav_config[UDAV_N_TRANSFER] = { [UDAV_BULK_DT_WR] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_OUT, .bufsize = (MCLBYTES + 2), .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, .callback = udav_bulk_write_callback, .timeout = 10000, /* 10 seconds */ }, [UDAV_BULK_DT_RD] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .bufsize = (MCLBYTES + 3), .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, .callback = udav_bulk_read_callback, .timeout = 0, /* no timeout */ }, [UDAV_INTR_DT_RD] = { .type = UE_INTERRUPT, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, .bufsize = 0, /* use wMaxPacketSize */ .callback = udav_intr_callback, }, }; static device_method_t udav_methods[] = { /* Device interface */ DEVMETHOD(device_probe, udav_probe), DEVMETHOD(device_attach, udav_attach), DEVMETHOD(device_detach, udav_detach), /* bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_driver_added, bus_generic_driver_added), /* MII interface */ DEVMETHOD(miibus_readreg, udav_miibus_readreg), DEVMETHOD(miibus_writereg, udav_miibus_writereg), DEVMETHOD(miibus_statchg, udav_miibus_statchg), {0, 0} }; static driver_t udav_driver = { .name = "udav", .methods = udav_methods, .size = sizeof(struct udav_softc), }; static devclass_t udav_devclass; DRIVER_MODULE(udav, uhub, udav_driver, udav_devclass, NULL, 0); DRIVER_MODULE(miibus, udav, miibus_driver, miibus_devclass, 0, 0); MODULE_DEPEND(udav, uether, 1, 1, 1); MODULE_DEPEND(udav, usb, 1, 1, 1); MODULE_DEPEND(udav, ether, 1, 1, 1); MODULE_DEPEND(udav, miibus, 1, 1, 1); static const struct usb_ether_methods udav_ue_methods = { .ue_attach_post = udav_attach_post, .ue_start = udav_start, .ue_init = udav_init, .ue_stop = udav_stop, .ue_tick = udav_tick, .ue_setmulti = udav_setmulti, .ue_setpromisc = udav_setpromisc, .ue_mii_upd = udav_ifmedia_upd, .ue_mii_sts = udav_ifmedia_status, }; #if USB_DEBUG static int udav_debug = 0; SYSCTL_NODE(_hw_usb, OID_AUTO, udav, CTLFLAG_RW, 0, "USB udav"); SYSCTL_INT(_hw_usb_udav, OID_AUTO, debug, CTLFLAG_RW, &udav_debug, 0, "Debug level"); #endif #define UDAV_SETBIT(sc, reg, x) \ udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x)) #define UDAV_CLRBIT(sc, reg, x) \ udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x)) static const struct usb_device_id udav_devs[] = { /* ShanTou DM9601 USB NIC */ {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)}, /* ShanTou ST268 USB NIC */ {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)}, /* Corega USB-TXC */ {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)}, }; static void udav_attach_post(struct usb_ether *ue) { struct udav_softc *sc = uether_getsc(ue); /* reset the adapter */ udav_reset(sc); /* Get Ethernet Address */ udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN); } static int udav_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); if (uaa->usb_mode != USB_MODE_HOST) return (ENXIO); if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX) return (ENXIO); if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX) return (ENXIO); return (usbd_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa)); } static int udav_attach(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); struct udav_softc *sc = device_get_softc(dev); struct usb_ether *ue = &sc->sc_ue; uint8_t iface_index; int error; sc->sc_flags = USB_GET_DRIVER_INFO(uaa); device_set_usb_desc(dev); mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); iface_index = UDAV_IFACE_INDEX; error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx); if (error) { device_printf(dev, "allocating USB transfers failed!\n"); goto detach; } ue->ue_sc = sc; ue->ue_dev = dev; ue->ue_udev = uaa->device; ue->ue_mtx = &sc->sc_mtx; ue->ue_methods = &udav_ue_methods; error = uether_ifattach(ue); if (error) { device_printf(dev, "could not attach interface\n"); goto detach; } return (0); /* success */ detach: udav_detach(dev); return (ENXIO); /* failure */ } static int udav_detach(device_t dev) { struct udav_softc *sc = device_get_softc(dev); struct usb_ether *ue = &sc->sc_ue; usbd_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER); uether_ifdetach(ue); mtx_destroy(&sc->sc_mtx); return (0); } #if 0 static int udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf, int len) { struct usb_device_request req; len &= 0xff; req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = UDAV_REQ_MEM_READ; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); } static int udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf, int len) { struct usb_device_request req; len &= 0xff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_MEM_WRITE; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); } static int udav_mem_write1(struct udav_softc *sc, uint16_t offset, uint8_t ch) { struct usb_device_request req; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_MEM_WRITE1; USETW(req.wValue, ch); USETW(req.wIndex, offset); USETW(req.wLength, 0x0000); return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); } #endif static int udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len) { struct usb_device_request req; len &= 0xff; req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = UDAV_REQ_REG_READ; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); } static int udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len) { struct usb_device_request req; offset &= 0xff; len &= 0xff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_REG_WRITE; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); } static uint8_t udav_csr_read1(struct udav_softc *sc, uint16_t offset) { uint8_t val; udav_csr_read(sc, offset, &val, 1); return (val); } static int udav_csr_write1(struct udav_softc *sc, uint16_t offset, uint8_t ch) { struct usb_device_request req; offset &= 0xff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_REG_WRITE1; USETW(req.wValue, ch); USETW(req.wIndex, offset); USETW(req.wLength, 0x0000); return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); } static void udav_init(struct usb_ether *ue) { struct udav_softc *sc = ue->ue_sc; struct ifnet *ifp = uether_getifp(&sc->sc_ue); UDAV_LOCK_ASSERT(sc, MA_OWNED); /* * Cancel pending I/O */ udav_stop(ue); /* set MAC address */ udav_csr_write(sc, UDAV_PAR, IF_LLADDR(ifp), ETHER_ADDR_LEN); /* initialize network control register */ /* disable loopback */ UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1); /* Initialize RX control register */ UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC); /* load multicast filter and update promiscious mode bit */ udav_setpromisc(ue); /* enable RX */ UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN); /* clear POWER_DOWN state of internal PHY */ UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0); UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0); usbd_xfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]); ifp->if_drv_flags |= IFF_DRV_RUNNING; udav_start(ue); } static void udav_reset(struct udav_softc *sc) { int i; /* Select PHY */ #if 1 /* * XXX: force select internal phy. * external phy routines are not tested. */ UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); #else if (sc->sc_flags & UDAV_EXT_PHY) UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); else UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); #endif UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST); for (i = 0; i < UDAV_TX_TIMEOUT; i++) { if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST)) break; if (uether_pause(&sc->sc_ue, hz / 100)) break; } uether_pause(&sc->sc_ue, hz / 100); } #define UDAV_BITS 6 static void udav_setmulti(struct usb_ether *ue) { struct udav_softc *sc = ue->ue_sc; struct ifnet *ifp = uether_getifp(&sc->sc_ue); struct ifmultiaddr *ifma; uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; int h = 0; UDAV_LOCK_ASSERT(sc, MA_OWNED); if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); return; } /* first, zot all the existing hash bits */ memset(hashtbl, 0x00, sizeof(hashtbl)); hashtbl[7] |= 0x80; /* broadcast address */ udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); /* now program new ones */ if_maddr_rlock(ifp); TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; h = ether_crc32_be(LLADDR((struct sockaddr_dl *) ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; hashtbl[h / 8] |= 1 << (h % 8); } if_maddr_runlock(ifp); /* disable all multicast */ UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL); /* write hash value to the register */ udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); } static void udav_setpromisc(struct usb_ether *ue) { struct udav_softc *sc = ue->ue_sc; struct ifnet *ifp = uether_getifp(&sc->sc_ue); uint8_t rxmode; rxmode = udav_csr_read1(sc, UDAV_RCR); rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC); if (ifp->if_flags & IFF_PROMISC) rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC; else if (ifp->if_flags & IFF_ALLMULTI) rxmode |= UDAV_RCR_ALL; /* write new mode bits */ udav_csr_write1(sc, UDAV_RCR, rxmode); } static void udav_start(struct usb_ether *ue) { struct udav_softc *sc = ue->ue_sc; /* * start the USB transfers, if not already started: */ usbd_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]); usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]); usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]); } static void udav_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) { struct udav_softc *sc = usbd_xfer_softc(xfer); struct ifnet *ifp = uether_getifp(&sc->sc_ue); struct usb_page_cache *pc; struct mbuf *m; int extra_len; int temp_len; uint8_t buf[2]; switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: DPRINTFN(11, "transfer complete\n"); ifp->if_opackets++; /* FALLTHROUGH */ case USB_ST_SETUP: tr_setup: if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) { /* * don't send anything if there is no link ! */ return; } IFQ_DRV_DEQUEUE(&ifp->if_snd, m); if (m == NULL) return; if (m->m_pkthdr.len > MCLBYTES) m->m_pkthdr.len = MCLBYTES; if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) { extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len; } else { extra_len = 0; } temp_len = (m->m_pkthdr.len + extra_len); /* * the frame length is specified in the first 2 bytes of the * buffer */ buf[0] = (uint8_t)(temp_len); buf[1] = (uint8_t)(temp_len >> 8); temp_len += 2; pc = usbd_xfer_get_frame(xfer, 0); usbd_copy_in(pc, 0, buf, 2); usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); if (extra_len) usbd_frame_zero(pc, temp_len - extra_len, extra_len); /* * if there's a BPF listener, bounce a copy * of this frame to him: */ BPF_MTAP(ifp, m); m_freem(m); usbd_xfer_set_frame_len(xfer, 0, temp_len); usbd_transfer_submit(xfer); return; default: /* Error */ DPRINTFN(11, "transfer error, %s\n", usbd_errstr(error)); ifp->if_oerrors++; if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } return; } } static void udav_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) { struct udav_softc *sc = usbd_xfer_softc(xfer); struct usb_ether *ue = &sc->sc_ue; struct ifnet *ifp = uether_getifp(ue); struct usb_page_cache *pc; struct udav_rxpkt stat; int len; int actlen; usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: if (actlen < sizeof(stat) + ETHER_CRC_LEN) { ifp->if_ierrors++; goto tr_setup; } pc = usbd_xfer_get_frame(xfer, 0); usbd_copy_out(pc, 0, &stat, sizeof(stat)); actlen -= sizeof(stat); len = min(actlen, le16toh(stat.pktlen)); len -= ETHER_CRC_LEN; if (stat.rxstat & UDAV_RSR_LCS) { ifp->if_collisions++; goto tr_setup; } if (stat.rxstat & UDAV_RSR_ERR) { ifp->if_ierrors++; goto tr_setup; } uether_rxbuf(ue, pc, sizeof(stat), len); /* FALLTHROUGH */ case USB_ST_SETUP: tr_setup: usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); usbd_transfer_submit(xfer); uether_rxflush(ue); return; default: /* Error */ DPRINTF("bulk read error, %s\n", usbd_errstr(error)); if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } return; } } static void udav_intr_callback(struct usb_xfer *xfer, usb_error_t error) { switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: case USB_ST_SETUP: tr_setup: usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); usbd_transfer_submit(xfer); return; default: /* Error */ if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } return; } } static void udav_stop(struct usb_ether *ue) { struct udav_softc *sc = ue->ue_sc; struct ifnet *ifp = uether_getifp(&sc->sc_ue); UDAV_LOCK_ASSERT(sc, MA_OWNED); ifp->if_drv_flags &= ~IFF_DRV_RUNNING; sc->sc_flags &= ~UDAV_FLAG_LINK; /* * stop all the transfers, if not already stopped: */ usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]); usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]); usbd_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]); udav_reset(sc); } static int udav_ifmedia_upd(struct ifnet *ifp) { struct udav_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); UDAV_LOCK_ASSERT(sc, MA_OWNED); sc->sc_flags &= ~UDAV_FLAG_LINK; if (mii->mii_instance) { struct mii_softc *miisc; LIST_FOREACH(miisc, &mii->mii_phys, mii_list) mii_phy_reset(miisc); } mii_mediachg(mii); return (0); } static void udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr) { struct udav_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); UDAV_LOCK(sc); mii_pollstat(mii); UDAV_UNLOCK(sc); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; } static void udav_tick(struct usb_ether *ue) { struct udav_softc *sc = ue->ue_sc; struct mii_data *mii = GET_MII(sc); UDAV_LOCK_ASSERT(sc, MA_OWNED); mii_tick(mii); if ((sc->sc_flags & UDAV_FLAG_LINK) == 0 && mii->mii_media_status & IFM_ACTIVE && IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { sc->sc_flags |= UDAV_FLAG_LINK; udav_start(ue); } } static int udav_miibus_readreg(device_t dev, int phy, int reg) { struct udav_softc *sc = device_get_softc(dev); uint16_t data16; uint8_t val[2]; int locked; /* XXX: one PHY only for the internal PHY */ if (phy != 0) return (0); locked = mtx_owned(&sc->sc_mtx); if (!locked) UDAV_LOCK(sc); /* select internal PHY and set PHY register address */ udav_csr_write1(sc, UDAV_EPAR, UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); /* select PHY operation and start read command */ udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR); /* XXX: should we wait? */ /* end read command */ UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR); /* retrieve the result from data registers */ udav_csr_read(sc, UDAV_EPDRL, val, 2); data16 = (val[0] | (val[1] << 8)); DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n", phy, reg, data16); if (!locked) UDAV_UNLOCK(sc); return (data16); } static int udav_miibus_writereg(device_t dev, int phy, int reg, int data) { struct udav_softc *sc = device_get_softc(dev); uint8_t val[2]; int locked; /* XXX: one PHY only for the internal PHY */ if (phy != 0) return (0); locked = mtx_owned(&sc->sc_mtx); if (!locked) UDAV_LOCK(sc); /* select internal PHY and set PHY register address */ udav_csr_write1(sc, UDAV_EPAR, UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); /* put the value to the data registers */ val[0] = (data & 0xff); val[1] = (data >> 8) & 0xff; udav_csr_write(sc, UDAV_EPDRL, val, 2); /* select PHY operation and start write command */ udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW); /* XXX: should we wait? */ /* end write command */ UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW); if (!locked) UDAV_UNLOCK(sc); return (0); } static void udav_miibus_statchg(device_t dev) { /* nothing to do */ }