diff options
Diffstat (limited to 'sys/dev/usb/net/if_udav.c')
| -rw-r--r-- | sys/dev/usb/net/if_udav.c | 856 |
1 files changed, 856 insertions, 0 deletions
diff --git a/sys/dev/usb/net/if_udav.c b/sys/dev/usb/net/if_udav.c new file mode 100644 index 0000000..82cec80 --- /dev/null +++ b/sys/dev/usb/net/if_udav.c @@ -0,0 +1,856 @@ +/* $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 <nabe@nabechan.org>. 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "usbdevs.h" +#include <dev/usb/usb.h> +#include <dev/usb/usb_mfunc.h> +#include <dev/usb/usb_error.h> + +#define USB_DEBUG_VAR udav_debug + +#include <dev/usb/usb_core.h> +#include <dev/usb/usb_lookup.h> +#include <dev/usb/usb_process.h> +#include <dev/usb/usb_debug.h> +#include <dev/usb/usb_request.h> +#include <dev/usb/usb_busdma.h> +#include <dev/usb/usb_util.h> + +#include <dev/usb/net/usb_ethernet.h> +#include <dev/usb/net/if_udavreg.h> + +/* prototypes */ + +static device_probe_t udav_probe; +static device_attach_t udav_attach; +static device_detach_t udav_detach; +static device_shutdown_t udav_shutdown; + +static usb2_callback_t udav_bulk_write_callback; +static usb2_callback_t udav_bulk_read_callback; +static usb2_callback_t udav_intr_callback; + +static usb2_ether_fn_t udav_attach_post; +static usb2_ether_fn_t udav_init; +static usb2_ether_fn_t udav_stop; +static usb2_ether_fn_t udav_start; +static usb2_ether_fn_t udav_tick; +static usb2_ether_fn_t udav_setmulti; +static usb2_ether_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 usb2_config udav_config[UDAV_N_TRANSFER] = { + + [UDAV_BULK_DT_WR] = { + .type = UE_BULK, + .endpoint = UE_ADDR_ANY, + .direction = UE_DIR_OUT, + .mh.bufsize = (MCLBYTES + 2), + .mh.flags = {.pipe_bof = 1,.force_short_xfer = 1,}, + .mh.callback = udav_bulk_write_callback, + .mh.timeout = 10000, /* 10 seconds */ + }, + + [UDAV_BULK_DT_RD] = { + .type = UE_BULK, + .endpoint = UE_ADDR_ANY, + .direction = UE_DIR_IN, + .mh.bufsize = (MCLBYTES + 3), + .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, + .mh.callback = udav_bulk_read_callback, + .mh.timeout = 0, /* no timeout */ + }, + + [UDAV_INTR_DT_RD] = { + .type = UE_INTERRUPT, + .endpoint = UE_ADDR_ANY, + .direction = UE_DIR_IN, + .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, + .mh.bufsize = 0, /* use wMaxPacketSize */ + .mh.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), + DEVMETHOD(device_shutdown, udav_shutdown), + + /* 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, ushub, 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 usb2_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_usb2, OID_AUTO, udav, CTLFLAG_RW, 0, "USB udav"); +SYSCTL_INT(_hw_usb2_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 usb2_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 usb2_ether *ue) +{ + struct udav_softc *sc = usb2_ether_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 usb2_attach_arg *uaa = device_get_ivars(dev); + + if (uaa->usb2_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 (usb2_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa)); +} + +static int +udav_attach(device_t dev) +{ + struct usb2_attach_arg *uaa = device_get_ivars(dev); + struct udav_softc *sc = device_get_softc(dev); + struct usb2_ether *ue = &sc->sc_ue; + uint8_t iface_index; + int error; + + sc->sc_flags = USB_GET_DRIVER_INFO(uaa); + + device_set_usb2_desc(dev); + + mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); + + iface_index = UDAV_IFACE_INDEX; + error = usb2_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 = usb2_ether_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 usb2_ether *ue = &sc->sc_ue; + + usb2_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER); + usb2_ether_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 usb2_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 (usb2_ether_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 usb2_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 (usb2_ether_do_request(&sc->sc_ue, &req, buf, 1000)); +} + +static int +udav_mem_write1(struct udav_softc *sc, uint16_t offset, + uint8_t ch) +{ + struct usb2_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 (usb2_ether_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 usb2_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 (usb2_ether_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 usb2_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 (usb2_ether_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 usb2_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 (usb2_ether_do_request(&sc->sc_ue, &req, NULL, 1000)); +} + +static void +udav_init(struct usb2_ether *ue) +{ + struct udav_softc *sc = ue->ue_sc; + struct ifnet *ifp = usb2_ether_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); + + usb2_transfer_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 (usb2_ether_pause(&sc->sc_ue, hz / 100)) + break; + } + + usb2_ether_pause(&sc->sc_ue, hz / 100); +} + +#define UDAV_BITS 6 +static void +udav_setmulti(struct usb2_ether *ue) +{ + struct udav_softc *sc = ue->ue_sc; + struct ifnet *ifp = usb2_ether_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_ADDR_LOCK(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_ADDR_UNLOCK(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 usb2_ether *ue) +{ + struct udav_softc *sc = ue->ue_sc; + struct ifnet *ifp = usb2_ether_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 usb2_ether *ue) +{ + struct udav_softc *sc = ue->ue_sc; + + /* + * start the USB transfers, if not already started: + */ + usb2_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]); + usb2_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]); + usb2_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]); +} + +static void +udav_bulk_write_callback(struct usb2_xfer *xfer) +{ + struct udav_softc *sc = xfer->priv_sc; + struct ifnet *ifp = usb2_ether_getifp(&sc->sc_ue); + 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; + + usb2_copy_in(xfer->frbuffers, 0, buf, 2); + + usb2_m_copy_in(xfer->frbuffers, 2, + m, 0, m->m_pkthdr.len); + + if (extra_len) { + usb2_bzero(xfer->frbuffers, 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); + + xfer->frlengths[0] = temp_len; + usb2_start_hardware(xfer); + return; + + default: /* Error */ + DPRINTFN(11, "transfer error, %s\n", + usb2_errstr(xfer->error)); + + ifp->if_oerrors++; + + if (xfer->error != USB_ERR_CANCELLED) { + /* try to clear stall first */ + xfer->flags.stall_pipe = 1; + goto tr_setup; + } + return; + } +} + +static void +udav_bulk_read_callback(struct usb2_xfer *xfer) +{ + struct udav_softc *sc = xfer->priv_sc; + struct usb2_ether *ue = &sc->sc_ue; + struct ifnet *ifp = usb2_ether_getifp(ue); + struct udav_rxpkt stat; + int len; + + switch (USB_GET_STATE(xfer)) { + case USB_ST_TRANSFERRED: + + if (xfer->actlen < sizeof(stat) + ETHER_CRC_LEN) { + ifp->if_ierrors++; + goto tr_setup; + } + usb2_copy_out(xfer->frbuffers, 0, &stat, sizeof(stat)); + xfer->actlen -= sizeof(stat); + len = min(xfer->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; + } + usb2_ether_rxbuf(ue, xfer->frbuffers, sizeof(stat), len); + /* FALLTHROUGH */ + case USB_ST_SETUP: +tr_setup: + xfer->frlengths[0] = xfer->max_data_length; + usb2_start_hardware(xfer); + usb2_ether_rxflush(ue); + return; + + default: /* Error */ + DPRINTF("bulk read error, %s\n", + usb2_errstr(xfer->error)); + + if (xfer->error != USB_ERR_CANCELLED) { + /* try to clear stall first */ + xfer->flags.stall_pipe = 1; + goto tr_setup; + } + return; + } +} + +static void +udav_intr_callback(struct usb2_xfer *xfer) +{ + switch (USB_GET_STATE(xfer)) { + case USB_ST_TRANSFERRED: + case USB_ST_SETUP: +tr_setup: + xfer->frlengths[0] = xfer->max_data_length; + usb2_start_hardware(xfer); + return; + + default: /* Error */ + if (xfer->error != USB_ERR_CANCELLED) { + /* try to clear stall first */ + xfer->flags.stall_pipe = 1; + goto tr_setup; + } + return; + } +} + +static void +udav_stop(struct usb2_ether *ue) +{ + struct udav_softc *sc = ue->ue_sc; + struct ifnet *ifp = usb2_ether_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: + */ + usb2_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]); + usb2_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]); + usb2_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 usb2_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 */ +} + +/* + * Stop all chip I/O so that the kernel's probe routines don't + * get confused by errant DMAs when rebooting. + */ +static int +udav_shutdown(device_t dev) +{ + struct udav_softc *sc = device_get_softc(dev); + + usb2_ether_ifshutdown(&sc->sc_ue); + + return (0); +} |
