diff options
Diffstat (limited to 'sys/dev/usb/if_aue.c')
| -rw-r--r-- | sys/dev/usb/if_aue.c | 1517 |
1 files changed, 1517 insertions, 0 deletions
diff --git a/sys/dev/usb/if_aue.c b/sys/dev/usb/if_aue.c new file mode 100644 index 0000000..fb46b22 --- /dev/null +++ b/sys/dev/usb/if_aue.c @@ -0,0 +1,1517 @@ +/* + * Copyright (c) 1997, 1998, 1999 + * Bill Paul <wpaul@ee.columbia.edu>. 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Bill Paul. + * 4. 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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD + * 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. + * + * $FreeBSD$ + */ + +/* + * ADMtek AN986 Pegasus USB to ethernet driver. Datasheet is available + * from http://www.admtek.com.tw. + * + * Written by Bill Paul <wpaul@ee.columbia.edu> + * Electrical Engineering Department + * Columbia University, New York City + */ + +/* + * The Pegasus chip uses four USB "endpoints" to provide 10/100 ethernet + * support: the control endpoint for reading/writing registers, burst + * read endpoint for packet reception, burst write for packet transmission + * and one for "interrupts." The chip uses the same RX filter scheme + * as the other ADMtek ethernet parts: one perfect filter entry for the + * the station address and a 64-bit multicast hash table. The chip supports + * both MII and HomePNA attachments. + * + * Since the maximum data transfer speed of USB is supposed to be 12Mbps, + * you're never really going to get 100Mbps speeds from this device. I + * think the idea is to allow the device to connect to 10 or 100Mbps + * networks, not necessarily to provide 100Mbps performance. Also, since + * the controller uses an external PHY chip, it's possible that board + * designers might simply choose a 10Mbps PHY. + * + * Registers are accessed using usbd_do_request(). Packet transfers are + * done using usbd_transfer() and friends. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/sockio.h> +#include <sys/mbuf.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/socket.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_dl.h> +#include <net/if_media.h> + +#include <net/bpf.h> + +#include <vm/vm.h> /* for vtophys */ +#include <vm/pmap.h> /* for vtophys */ +#include <machine/clock.h> /* for DELAY */ +#include <machine/bus_pio.h> +#include <machine/bus_memio.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/bus.h> +#include <sys/rman.h> + +#include <dev/usb/usb.h> +#include <dev/usb/usbdi.h> +#include <dev/usb/usbdi_util.h> +#include <dev/usb/usbdivar.h> +#include <dev/usb/usbdevs.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> + +#include <dev/usb/if_auereg.h> + +/* "controller miibus0" required. See GENERIC if you get errors here. */ +#include "miibus_if.h" + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif + +/* + * Various supported device vendors/types and their names. + */ +static struct aue_type aue_devs[] = { + { USB_VENDOR_ADMTEK, USB_PRODUCT_ADMTEK_PEGASUS, + "ADMtek AN986 Pegasus 10/100BaseTX" }, + { USB_VENDOR_BILLIONTON, USB_PRODUCT_BILLIONTON_USB100, + "ADMtek AN986 Pegasus 10/100BaseTX" }, + { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_LUATX, + "ADMtek AN986 Pegasus 10/100BaseTX" }, + { 0, 0, NULL } +}; + +static int aue_match __P((device_t)); +static int aue_attach __P((device_t)); +static int aue_detach __P((device_t)); + +static int aue_tx_list_init __P((struct aue_softc *)); +static int aue_rx_list_init __P((struct aue_softc *)); +static int aue_newbuf __P((struct aue_softc *, struct aue_chain *, + struct mbuf *)); +static int aue_encap __P((struct aue_softc *, struct mbuf *, int)); +static void aue_intr __P((usbd_xfer_handle, + usbd_private_handle, usbd_status)); +static void aue_rxeof __P((usbd_xfer_handle, + usbd_private_handle, usbd_status)); +static void aue_txeof __P((usbd_xfer_handle, + usbd_private_handle, usbd_status)); +static void aue_tick __P((void *)); +static void aue_start __P((struct ifnet *)); +static int aue_ioctl __P((struct ifnet *, u_long, caddr_t)); +static void aue_init __P((void *)); +static void aue_stop __P((struct aue_softc *)); +static void aue_watchdog __P((struct ifnet *)); +static void aue_shutdown __P((device_t)); +static int aue_ifmedia_upd __P((struct ifnet *)); +static void aue_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); + +static void aue_eeprom_getword __P((struct aue_softc *, int, u_int16_t *)); +static void aue_read_eeprom __P((struct aue_softc *, caddr_t, int, + int, int)); +static int aue_miibus_readreg __P((device_t, int, int)); +static int aue_miibus_writereg __P((device_t, int, int, int)); +static void aue_miibus_statchg __P((device_t)); + +static void aue_setmulti __P((struct aue_softc *)); +static u_int32_t aue_crc __P((caddr_t)); +static void aue_reset __P((struct aue_softc *)); + +static int csr_read_1 __P((struct aue_softc *, int)); +static int csr_write_1 __P((struct aue_softc *, int, int)); +static int csr_read_2 __P((struct aue_softc *, int)); +static int csr_write_2 __P((struct aue_softc *, int, int)); + +static device_method_t aue_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, aue_match), + DEVMETHOD(device_attach, aue_attach), + DEVMETHOD(device_detach, aue_detach), + DEVMETHOD(device_shutdown, aue_shutdown), + + /* bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_driver_added, bus_generic_driver_added), + + /* MII interface */ + DEVMETHOD(miibus_readreg, aue_miibus_readreg), + DEVMETHOD(miibus_writereg, aue_miibus_writereg), + DEVMETHOD(miibus_statchg, aue_miibus_statchg), + + { 0, 0 } +}; + +static driver_t aue_driver = { + "aue", + aue_methods, + sizeof(struct aue_softc) +}; + +static devclass_t aue_devclass; + +DRIVER_MODULE(if_aue, uhub, aue_driver, aue_devclass, usbd_driver_load, 0); +DRIVER_MODULE(miibus, aue, miibus_driver, miibus_devclass, 0, 0); + +#define AUE_SETBIT(sc, reg, x) \ + csr_write_1(sc, reg, csr_read_1(sc, reg) | (x)) + +#define AUE_CLRBIT(sc, reg, x) \ + csr_write_1(sc, reg, csr_read_1(sc, reg) & ~(x)) + +static int csr_read_1(sc, reg) + struct aue_softc *sc; + int reg; +{ + usb_device_request_t req; + usbd_status err; + u_int8_t val = 0; + int s; + + s = splusb(); + + req.bmRequestType = UT_READ_VENDOR_DEVICE; + req.bRequest = AUE_UR_READREG; + USETW(req.wValue, 0); + USETW(req.wIndex, reg); + USETW(req.wLength, 1); + + err = usbd_do_request(sc->aue_udev, &req, &val); + + splx(s); + + if (err) + return(0); + + return(val); +} + +static int csr_read_2(sc, reg) + struct aue_softc *sc; + int reg; +{ + usb_device_request_t req; + usbd_status err; + u_int16_t val = 0; + int s; + + s = splusb(); + + req.bmRequestType = UT_READ_VENDOR_DEVICE; + req.bRequest = AUE_UR_READREG; + USETW(req.wValue, 0); + USETW(req.wIndex, reg); + USETW(req.wLength, 2); + + err = usbd_do_request(sc->aue_udev, &req, &val); + + splx(s); + + if (err) + return(0); + + return(val); +} + +static int csr_write_1(sc, reg, val) + struct aue_softc *sc; + int reg, val; +{ + usb_device_request_t req; + usbd_status err; + int s; + + s = splusb(); + + req.bmRequestType = UT_WRITE_VENDOR_DEVICE; + req.bRequest = AUE_UR_WRITEREG; + USETW(req.wValue, val); + USETW(req.wIndex, reg); + USETW(req.wLength, 1); + + err = usbd_do_request(sc->aue_udev, &req, &val); + + splx(s); + + if (err) + return(-1); + + return(0); +} + +static int csr_write_2(sc, reg, val) + struct aue_softc *sc; + int reg, val; +{ + usb_device_request_t req; + usbd_status err; + int s; + + s = splusb(); + + req.bmRequestType = UT_WRITE_VENDOR_DEVICE; + req.bRequest = AUE_UR_WRITEREG; + USETW(req.wValue, val); + USETW(req.wIndex, reg); + USETW(req.wLength, 2); + + err = usbd_do_request(sc->aue_udev, &req, &val); + + splx(s); + + if (err) + return(-1); + + return(0); +} + +/* + * Read a word of data stored in the EEPROM at address 'addr.' + */ +static void aue_eeprom_getword(sc, addr, dest) + struct aue_softc *sc; + int addr; + u_int16_t *dest; +{ + register int i; + u_int16_t word = 0; + + csr_write_1(sc, AUE_EE_REG, addr); + csr_write_1(sc, AUE_EE_CTL, AUE_EECTL_READ); + + for (i = 0; i < AUE_TIMEOUT; i++) { + if (csr_read_1(sc, AUE_EE_CTL) & + AUE_EECTL_DONE) + break; + } + + if (i == AUE_TIMEOUT) { + printf("aue%d: EEPROM read timed out\n", + sc->aue_unit); + } + + word = csr_read_2(sc, AUE_EE_DATA); + *dest = word; + + return; +} + +/* + * Read a sequence of words from the EEPROM. + */ +static void aue_read_eeprom(sc, dest, off, cnt, swap) + struct aue_softc *sc; + caddr_t dest; + int off; + int cnt; + int swap; +{ + int i; + u_int16_t word = 0, *ptr; + + for (i = 0; i < cnt; i++) { + aue_eeprom_getword(sc, off + i, &word); + ptr = (u_int16_t *)(dest + (i * 2)); + if (swap) + *ptr = ntohs(word); + else + *ptr = word; + } + + return; +} + +static int aue_miibus_readreg(dev, phy, reg) + device_t dev; + int phy, reg; +{ + struct aue_softc *sc; + int i; + u_int16_t val = 0; + + /* + * The Am79C901 HomePNA PHY actually contains + * two transceivers: a 1Mbps HomePNA PHY and a + * 10Mbps full/half duplex ethernet PHY with + * NWAY autoneg. However in the ADMtek adapter, + * only the 1Mbps PHY is actually connected to + * anything, so we ignore the 10Mbps one. It + * happens to be configured for MII address 3, + * so we filter that out. + */ + if (phy == 3) + return(0); + + if (phy != 1) + return(0); + + sc = device_get_softc(dev); + + csr_write_1(sc, AUE_PHY_ADDR, phy); + csr_write_1(sc, AUE_PHY_CTL, reg|AUE_PHYCTL_READ); + + for (i = 0; i < AUE_TIMEOUT; i++) { + if (csr_read_1(sc, AUE_PHY_CTL) & + AUE_PHYCTL_DONE) + break; + } + + if (i == AUE_TIMEOUT) { + printf("aue%d: MII read timed out\n", + sc->aue_unit); + } + + val = csr_read_2(sc, AUE_PHY_DATA); + + return(val); +} + +static int aue_miibus_writereg(dev, phy, reg, data) + device_t dev; + int phy, reg, data; +{ + struct aue_softc *sc; + int i; + + if (phy == 3) + return(0); + + sc = device_get_softc(dev); + + csr_write_2(sc, AUE_PHY_DATA, data); + csr_write_1(sc, AUE_PHY_ADDR, phy); + csr_write_1(sc, AUE_PHY_CTL, reg|AUE_PHYCTL_WRITE); + + for (i = 0; i < AUE_TIMEOUT; i++) { + if (csr_read_1(sc, AUE_PHY_CTL) & + AUE_PHYCTL_DONE) + break; + } + + if (i == AUE_TIMEOUT) { + printf("aue%d: MII read timed out\n", + sc->aue_unit); + } + + return(0); +} + +static void aue_miibus_statchg(dev) + device_t dev; +{ + struct aue_softc *sc; + struct mii_data *mii; + + sc = device_get_softc(dev); + mii = device_get_softc(sc->aue_miibus); + + AUE_CLRBIT(sc, AUE_CTL0, AUE_CTL0_RX_ENB|AUE_CTL0_TX_ENB); + if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) { + AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_SPEEDSEL); + } else { + AUE_CLRBIT(sc, AUE_CTL1, AUE_CTL1_SPEEDSEL); + } + + if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { + AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_DUPLEX); + } else { + AUE_CLRBIT(sc, AUE_CTL1, AUE_CTL1_DUPLEX); + } + AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_RX_ENB|AUE_CTL0_TX_ENB); + + return; +} + +#define AUE_POLY 0xEDB88320 +#define AUE_BITS 6 + +static u_int32_t aue_crc(addr) + caddr_t addr; +{ + u_int32_t idx, bit, data, crc; + + /* Compute CRC for the address value. */ + crc = 0xFFFFFFFF; /* initial value */ + + for (idx = 0; idx < 6; idx++) { + for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) + crc = (crc >> 1) ^ (((crc ^ data) & 1) ? AUE_POLY : 0); + } + + return (crc & ((1 << AUE_BITS) - 1)); +} + +static void aue_setmulti(sc) + struct aue_softc *sc; +{ + struct ifnet *ifp; + struct ifmultiaddr *ifma; + u_int32_t h = 0, i; + + ifp = &sc->arpcom.ac_if; + + if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { + AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_ALLMULTI); + return; + } + + AUE_CLRBIT(sc, AUE_CTL0, AUE_CTL0_ALLMULTI); + + /* first, zot all the existing hash bits */ + for (i = 0; i < 8; i++) + csr_write_1(sc, AUE_MAR0 + i, 0); + + /* now program new ones */ + for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL; + ifma = ifma->ifma_link.le_next) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + h = aue_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); + AUE_SETBIT(sc, AUE_MAR + (h >> 3), 1 << (h & 0xF)); + } + + return; +} + +static void aue_reset(sc) + struct aue_softc *sc; +{ + register int i; + + AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_RESETMAC); + + for (i = 0; i < AUE_TIMEOUT; i++) { + if (!(csr_read_1(sc, AUE_CTL1) & AUE_CTL1_RESETMAC)) + break; + } + + if (i == AUE_TIMEOUT) + printf("aue%d: reset failed\n", sc->aue_unit); + + /* + * The PHY(s) attached to the Pegasus chip may be held + * in reset until we flip on the GPIO outputs. Make sure + * to set the GPIO pins high so that the PHY(s) will + * be enabled. + */ + csr_write_1(sc, AUE_GPIO0, AUE_GPIO_OUT0|AUE_GPIO_SEL0|AUE_GPIO_SEL1); + + /* Wait a little while for the chip to get its brains in order. */ + DELAY(1000); + return; +} + +/* + * Probe for a Pegasus chip. + */ +USB_MATCH(aue) +{ + USB_MATCH_START(aue, uaa); + struct aue_type *t; + + if (!uaa->iface) + return(UMATCH_NONE); + + t = aue_devs; + while(t->aue_name != NULL) { + if (uaa->vendor == t->aue_vid && + uaa->product == t->aue_did) { + device_set_desc(self, t->aue_name); + return(UMATCH_VENDOR_PRODUCT); + } + t++; + } + + return(UMATCH_NONE); +} + +/* + * Attach the interface. Allocate softc structures, do ifmedia + * setup and ethernet/BPF attach. + */ +USB_ATTACH(aue) +{ + USB_ATTACH_START(aue, sc, uaa); + char devinfo[1024]; + int s; + u_char eaddr[ETHER_ADDR_LEN]; + struct ifnet *ifp; + usb_interface_descriptor_t *id; + usb_endpoint_descriptor_t *ed; + int i; + + s = splimp(); + + bzero(sc, sizeof(struct aue_softc)); + sc->aue_iface = uaa->iface; + sc->aue_udev = uaa->device; + sc->aue_unit = device_get_unit(self); + + id = usbd_get_interface_descriptor(uaa->iface); + + usbd_devinfo(uaa->device, 0, devinfo); + device_set_desc_copy(self, devinfo); + printf("%s: %s\n", USBDEVNAME(self), devinfo); + + /* Find endpoints. */ + for (i = 0; i < id->bNumEndpoints; i++) { + ed = usbd_interface2endpoint_descriptor(uaa->iface, i); + if (!ed) { + printf("aue%d: couldn't get ep %d\n", + sc->aue_unit, i); + splx(s); + USB_ATTACH_ERROR_RETURN; + } + if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { + sc->aue_ed[AUE_ENDPT_RX] = ed->bEndpointAddress; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && + (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { + sc->aue_ed[AUE_ENDPT_TX] = ed->bEndpointAddress; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { + sc->aue_ed[AUE_ENDPT_INTR] = ed->bEndpointAddress; + } + } + + /* Reset the adapter. */ + aue_reset(sc); + + /* + * Get station address from the EEPROM. + */ + aue_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 0); + + /* + * A Pegasus chip was detected. Inform the world. + */ + printf("aue%d: Ethernet address: %6D\n", sc->aue_unit, eaddr, ":"); + + bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); + + ifp = &sc->arpcom.ac_if; + ifp->if_softc = sc; + ifp->if_unit = sc->aue_unit; + ifp->if_name = "aue"; + ifp->if_mtu = ETHERMTU; + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; + ifp->if_ioctl = aue_ioctl; + ifp->if_output = ether_output; + ifp->if_start = aue_start; + ifp->if_watchdog = aue_watchdog; + ifp->if_init = aue_init; + ifp->if_baudrate = 10000000; + ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; + + /* + * Do MII setup. + * NOTE: Doing this causes child devices to be attached to us, + * which we would normally disconnect at in the detach routine + * using device_delete_child(). However the USB code is set up + * such that when this driver is removed, all childred devices + * are removed as well. In effect, the USB code ends up detaching + * all of our children for us, so we don't have to do is ourselves + * in aue_detach(). It's important to point this out since if + * we *do* try to detach the child devices ourselves, we will + * end up getting the children deleted twice, which will crash + * the system. + */ + if (mii_phy_probe(self, &sc->aue_miibus, + aue_ifmedia_upd, aue_ifmedia_sts)) { + printf("aue%d: MII without any PHY!\n", sc->aue_unit); + splx(s); + USB_ATTACH_ERROR_RETURN; + } + + /* + * Call MI attach routines. + */ + if_attach(ifp); + ether_ifattach(ifp); + callout_handle_init(&sc->aue_stat_ch); + bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); + + splx(s); + USB_ATTACH_SUCCESS_RETURN; +} + +static int aue_detach(dev) + device_t dev; +{ + struct aue_softc *sc; + struct ifnet *ifp; + int s; + + s = splusb(); + + sc = device_get_softc(dev); + ifp = &sc->arpcom.ac_if; + + untimeout(aue_tick, sc, sc->aue_stat_ch); + if_detach(ifp); + + if (sc->aue_ep[AUE_ENDPT_TX] != NULL) + usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_TX]); + if (sc->aue_ep[AUE_ENDPT_RX] != NULL) + usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_RX]); + if (sc->aue_ep[AUE_ENDPT_INTR] != NULL) + usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_INTR]); + + splx(s); + + return(0); +} + +/* + * Initialize an RX descriptor and attach an MBUF cluster. + */ +static int aue_newbuf(sc, c, m) + struct aue_softc *sc; + struct aue_chain *c; + struct mbuf *m; +{ + struct mbuf *m_new = NULL; + + if (m == NULL) { + MGETHDR(m_new, M_DONTWAIT, MT_DATA); + if (m_new == NULL) { + printf("aue%d: no memory for rx list " + "-- packet dropped!\n", sc->aue_unit); + return(ENOBUFS); + } + + MCLGET(m_new, M_DONTWAIT); + if (!(m_new->m_flags & M_EXT)) { + printf("aue%d: no memory for rx list " + "-- packet dropped!\n", sc->aue_unit); + m_freem(m_new); + return(ENOBUFS); + } + m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; + } else { + m_new = m; + m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; + m_new->m_data = m_new->m_ext.ext_buf; + } + + m_adj(m_new, ETHER_ALIGN); + c->aue_mbuf = m_new; + + return(0); +} + +static int aue_rx_list_init(sc) + struct aue_softc *sc; +{ + struct aue_cdata *cd; + struct aue_chain *c; + int i; + + cd = &sc->aue_cdata; + for (i = 0; i < AUE_RX_LIST_CNT; i++) { + c = &cd->aue_rx_chain[i]; + c->aue_sc = sc; + c->aue_idx = i; + c->aue_accum = 0; + if (aue_newbuf(sc, c, NULL) == ENOBUFS) + return(ENOBUFS); + if (c->aue_xfer == NULL) { + c->aue_xfer = usbd_alloc_xfer(sc->aue_udev); + if (c->aue_xfer == NULL) + return(ENOBUFS); + } + } + + return(0); +} + +static int aue_tx_list_init(sc) + struct aue_softc *sc; +{ + struct aue_cdata *cd; + struct aue_chain *c; + int i; + + cd = &sc->aue_cdata; + for (i = 0; i < AUE_TX_LIST_CNT; i++) { + c = &cd->aue_tx_chain[i]; + c->aue_sc = sc; + c->aue_idx = i; + c->aue_mbuf = NULL; + if (c->aue_xfer == NULL) { + c->aue_xfer = usbd_alloc_xfer(sc->aue_udev); + if (c->aue_xfer == NULL) + return(ENOBUFS); + } + c->aue_buf = malloc(AUE_BUFSZ, M_USBDEV, M_NOWAIT); + if (c->aue_buf == NULL) + return(ENOBUFS); + } + + return(0); +} + +static void aue_intr(xfer, priv, status) + usbd_xfer_handle xfer; + usbd_private_handle priv; + usbd_status status; +{ + struct aue_softc *sc; + struct ifnet *ifp; + struct aue_intrpkt *p; + int s; + + s = splimp(); + + sc = priv; + ifp = &sc->arpcom.ac_if; + + if (!(ifp->if_flags & IFF_RUNNING)) { + splx(s); + return; + } + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + splx(s); + return; + } + printf("aue%d: usb error on intr: %s\n", sc->aue_unit, + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_RX]); + splx(s); + return; + } + + usbd_get_xfer_status(xfer, NULL, (void **)&p, NULL, NULL); + + if (p->aue_txstat0) + ifp->if_oerrors++; + + if (p->aue_txstat0 & (AUE_TXSTAT0_LATECOLL & AUE_TXSTAT0_EXCESSCOLL)) + ifp->if_collisions++; + + splx(s); + return; +} + +/* + * A frame has been uploaded: pass the resulting mbuf chain up to + * the higher level protocols. + * + * Grrr. Receiving transfers larger than about 1152 bytes sometimes + * doesn't work. We get an incomplete frame. In order to avoid + * this, we queue up RX transfers that are shorter than a full sized + * frame. If the received frame is larger than our transfer size, + * we snag the rest of the data using a second transfer. Does this + * hurt performance? Yes. But after fighting with this stupid thing + * for three days, I'm willing to settle. I'd rather have reliable + * receive performance that fast but spotty performance. + */ +static void aue_rxeof(xfer, priv, status) + usbd_xfer_handle xfer; + usbd_private_handle priv; + usbd_status status; +{ + struct aue_softc *sc; + struct aue_chain *c; + struct ether_header *eh; + struct mbuf *m; + struct ifnet *ifp; + int total_len = 0; + struct aue_rxpkt r; + int s; + + s = splimp(); + + c = priv; + sc = c->aue_sc; + ifp = &sc->arpcom.ac_if; + + if (!(ifp->if_flags & IFF_RUNNING)) { + return; + splx(s); + } + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + splx(s); + return; + } + printf("aue%d: usb error on rx: %s\n", sc->aue_unit, + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_RX]); + goto done; + } + + usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); + + /* + * See if we've already accumulated some data from + * a previous transfer. + */ + if (c->aue_accum) { + total_len += c->aue_accum; + c->aue_accum = 0; + } + + if (total_len <= 4 + ETHER_CRC_LEN) { + ifp->if_ierrors++; + goto done; + } + + m = c->aue_mbuf; + bcopy(mtod(m, char *) + total_len - 4, (char *)&r, sizeof(r)); + + /* Turn off all the non-error bits in the rx status word. */ + r.aue_rxstat &= AUE_RXSTAT_MASK; + + /* + * Check to see if this is just the first chunk of a + * split transfer. We really need a more reliable way + * to detect this. + */ + if (r.aue_pktlen != total_len && total_len == AUE_CUTOFF) { + c->aue_accum = AUE_CUTOFF; + usbd_setup_xfer(xfer, sc->aue_ep[AUE_ENDPT_RX], + c, mtod(c->aue_mbuf, char *) + AUE_CUTOFF, + AUE_CUTOFF, USBD_SHORT_XFER_OK, + USBD_NO_TIMEOUT, aue_rxeof); + usbd_transfer(xfer); + splx(s); + return; + } + + if (r.aue_rxstat) { + ifp->if_ierrors++; + goto done; + } + + /* No errors; receive the packet. */ + total_len -= (4 + ETHER_CRC_LEN); + if (aue_newbuf(sc, c, NULL) == ENOBUFS) { + ifp->if_ierrors++; + goto done; + } + + + ifp->if_ipackets++; + eh = mtod(m, struct ether_header *); + m->m_pkthdr.rcvif = ifp; + m->m_pkthdr.len = m->m_len = total_len; + + /* + * Handle BPF listeners. Let the BPF user see the packet, but + * don't pass it up to the ether_input() layer unless it's + * a broadcast packet, multicast packet, matches our ethernet + * address or the interface is in promiscuous mode. + */ + if (ifp->if_bpf) { + bpf_mtap(ifp, m); + if (ifp->if_flags & IFF_PROMISC && + (bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, + ETHER_ADDR_LEN) && !(eh->ether_dhost[0] & 1))) { + m_freem(m); + goto done; + } + } + + /* Remove header from mbuf and pass it on. */ + m_adj(m, sizeof(struct ether_header)); + ether_input(ifp, eh, m); + +done: + + /* Setup new transfer. */ + usbd_setup_xfer(xfer, sc->aue_ep[AUE_ENDPT_RX], + c, mtod(c->aue_mbuf, char *), AUE_CUTOFF, USBD_SHORT_XFER_OK, + USBD_NO_TIMEOUT, aue_rxeof); + usbd_transfer(xfer); + + splx(s); + + return; +} + +/* + * A frame was downloaded to the chip. It's safe for us to clean up + * the list buffers. + */ + +static void aue_txeof(xfer, priv, status) + usbd_xfer_handle xfer; + usbd_private_handle priv; + usbd_status status; +{ + struct aue_softc *sc; + struct aue_chain *c; + struct ifnet *ifp; + usbd_status err; + int s; + + s = splimp(); + + c = priv; + sc = c->aue_sc; + ifp = &sc->arpcom.ac_if; + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + splx(s); + return; + } + printf("aue%d: usb error on tx: %s\n", sc->aue_unit, + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_TX]); + splx(s); + return; + } + + ifp->if_timer = 0; + ifp->if_flags &= ~IFF_OACTIVE; + usbd_get_xfer_status(c->aue_xfer, NULL, NULL, NULL, &err); + + m_freem(c->aue_mbuf); + c->aue_mbuf = NULL; + + if (err) + ifp->if_oerrors++; + else + ifp->if_opackets++; + + if (ifp->if_snd.ifq_head != NULL) + aue_start(ifp); + + splx(s); + + return; +} + +static void aue_tick(xsc) + void *xsc; +{ + struct aue_softc *sc; + struct ifnet *ifp; + struct mii_data *mii; + int s; + + s = splimp(); + + sc = xsc; + + if (sc == NULL) { + splx(s); + return; + } + + ifp = &sc->arpcom.ac_if; + mii = device_get_softc(sc->aue_miibus); + if (mii == NULL) { + splx(s); + return; + } + + mii_tick(mii); + if (!sc->aue_link) { + mii_pollstat(mii); + if (mii->mii_media_status & IFM_ACTIVE && + IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) + sc->aue_link++; + if (ifp->if_snd.ifq_head != NULL) + aue_start(ifp); + } + + sc->aue_stat_ch = timeout(aue_tick, sc, hz); + + splx(s); + + return; +} + +static int aue_encap(sc, m, idx) + struct aue_softc *sc; + struct mbuf *m; + int idx; +{ + int total_len; + struct aue_chain *c; + usbd_status err; + + c = &sc->aue_cdata.aue_tx_chain[idx]; + + /* + * Copy the mbuf data into a contiguous buffer, leaving two + * bytes at the beginning to hold the frame length. + */ + m_copydata(m, 0, m->m_pkthdr.len, c->aue_buf + 2); + c->aue_mbuf = m; + + /* + * XXX I don't understand why, but transfers that + * are exactly a multiple of 64 bytes in size don't + * work. I'm not sure why. If we detect such a + * transfer, we pad it out by one extra byte. + */ + total_len = m->m_pkthdr.len + 2; + if (!(total_len % 64)) + total_len++; + + /* + * The ADMtek documentation says that the packet length is + * supposed to be specified in the first two bytes of the + * transfer, however it actually seems to ignore this info + * and base the frame size on the bulk transfer length. + */ + c->aue_buf[0] = (u_int8_t)m->m_pkthdr.len; + c->aue_buf[1] = (u_int8_t)(m->m_pkthdr.len >> 3) & 0xE0; + + usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_TX], + c, c->aue_buf, total_len, 0, 10000, aue_txeof); + + /* Transmit */ + err = usbd_transfer(c->aue_xfer); + if (err != USBD_IN_PROGRESS) { + aue_stop(sc); + return(EIO); + } + + sc->aue_cdata.aue_tx_cnt++; + + return(0); +} + +static void aue_start(ifp) + struct ifnet *ifp; +{ + struct aue_softc *sc; + struct mbuf *m_head = NULL; + + sc = ifp->if_softc; + + if (!sc->aue_link) + return; + + if (ifp->if_flags & IFF_OACTIVE) + return; + + IF_DEQUEUE(&ifp->if_snd, m_head); + if (m_head == NULL) + return; + + if (aue_encap(sc, m_head, 0)) { + IF_PREPEND(&ifp->if_snd, m_head); + ifp->if_flags |= IFF_OACTIVE; + return; + } + + /* + * If there's a BPF listener, bounce a copy of this frame + * to him. + */ + if (ifp->if_bpf) + bpf_mtap(ifp, m_head); + + ifp->if_flags |= IFF_OACTIVE; + + /* + * Set a timeout in case the chip goes out to lunch. + */ + ifp->if_timer = 5; + + return; +} + +static void aue_init(xsc) + void *xsc; +{ + struct aue_softc *sc = xsc; + struct ifnet *ifp = &sc->arpcom.ac_if; + struct mii_data *mii; + struct aue_chain *c; + usbd_status err; + int i, s; + + if (ifp->if_flags & IFF_RUNNING) + return; + + s = splimp(); + + /* + * Cancel pending I/O and free all RX/TX buffers. + */ + aue_reset(sc); + + mii = device_get_softc(sc->aue_miibus); + + /* Set MAC address */ + for (i = 0; i < ETHER_ADDR_LEN; i++) + csr_write_1(sc, AUE_PAR0 + i, sc->arpcom.ac_enaddr[i]); + + /* If we want promiscuous mode, set the allframes bit. */ + if (ifp->if_flags & IFF_PROMISC) { + AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); + } else { + AUE_CLRBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); + } + + /* Init TX ring. */ + if (aue_tx_list_init(sc) == ENOBUFS) { + printf("aue%d: tx list init failed\n", sc->aue_unit); + splx(s); + return; + } + + /* Init RX ring. */ + if (aue_rx_list_init(sc) == ENOBUFS) { + printf("aue%d: rx list init failed\n", sc->aue_unit); + splx(s); + return; + } + + sc->aue_cdata.aue_ibuf = malloc(AUE_INTR_PKTLEN, M_USBDEV, M_NOWAIT); + + /* Load the multicast filter. */ + aue_setmulti(sc); + + /* Enable RX and TX */ + csr_write_1(sc, AUE_CTL0, AUE_CTL0_RXSTAT_APPEND|AUE_CTL0_RX_ENB); + AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_TX_ENB); + AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_EP3_CLR); + + mii_mediachg(mii); + + /* Open RX and TX pipes. */ + err = usbd_open_pipe(sc->aue_iface, sc->aue_ed[AUE_ENDPT_RX], + USBD_EXCLUSIVE_USE, &sc->aue_ep[AUE_ENDPT_RX]); + if (err) { + printf("aue%d: open rx pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + splx(s); + return; + } + usbd_open_pipe(sc->aue_iface, sc->aue_ed[AUE_ENDPT_TX], + USBD_EXCLUSIVE_USE, &sc->aue_ep[AUE_ENDPT_TX]); + if (err) { + printf("aue%d: open tx pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + splx(s); + return; + } + + err = usbd_open_pipe_intr(sc->aue_iface, sc->aue_ed[AUE_ENDPT_INTR], + USBD_SHORT_XFER_OK, &sc->aue_ep[AUE_ENDPT_INTR], sc, + sc->aue_cdata.aue_ibuf, AUE_INTR_PKTLEN, aue_intr); + if (err) { + printf("aue%d: open intr pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + splx(s); + return; + } + + /* Start up the receive pipe. */ + for (i = 0; i < AUE_RX_LIST_CNT; i++) { + c = &sc->aue_cdata.aue_rx_chain[i]; + usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_RX], + c, mtod(c->aue_mbuf, char *), AUE_CUTOFF, + USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, aue_rxeof); + usbd_transfer(c->aue_xfer); + } + + ifp->if_flags |= IFF_RUNNING; + ifp->if_flags &= ~IFF_OACTIVE; + + (void)splx(s); + + sc->aue_stat_ch = timeout(aue_tick, sc, hz); + + return; +} + +/* + * Set media options. + */ +static int aue_ifmedia_upd(ifp) + struct ifnet *ifp; +{ + struct aue_softc *sc; + struct mii_data *mii; + + sc = ifp->if_softc; + + mii = device_get_softc(sc->aue_miibus); + sc->aue_link = 0; + if (mii->mii_instance) { + struct mii_softc *miisc; + for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; + miisc = LIST_NEXT(miisc, mii_list)) + mii_phy_reset(miisc); + } + mii_mediachg(mii); + + return(0); +} + +/* + * Report current media status. + */ +static void aue_ifmedia_sts(ifp, ifmr) + struct ifnet *ifp; + struct ifmediareq *ifmr; +{ + struct aue_softc *sc; + struct mii_data *mii; + + sc = ifp->if_softc; + + mii = device_get_softc(sc->aue_miibus); + mii_pollstat(mii); + ifmr->ifm_active = mii->mii_media_active; + ifmr->ifm_status = mii->mii_media_status; + + return; +} + +static int aue_ioctl(ifp, command, data) + struct ifnet *ifp; + u_long command; + caddr_t data; +{ + struct aue_softc *sc = ifp->if_softc; + struct ifreq *ifr = (struct ifreq *) data; + struct mii_data *mii; + int s, error = 0; + + s = splimp(); + + switch(command) { + case SIOCSIFADDR: + case SIOCGIFADDR: + case SIOCSIFMTU: + error = ether_ioctl(ifp, command, data); + break; + case SIOCSIFFLAGS: + if (ifp->if_flags & IFF_UP) { + if (ifp->if_flags & IFF_RUNNING && + ifp->if_flags & IFF_PROMISC && + !(sc->aue_if_flags & IFF_PROMISC)) { + AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); + } else if (ifp->if_flags & IFF_RUNNING && + !(ifp->if_flags & IFF_PROMISC) && + sc->aue_if_flags & IFF_PROMISC) { + AUE_CLRBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); + } else if (!(ifp->if_flags & IFF_RUNNING)) + aue_init(sc); + } else { + if (ifp->if_flags & IFF_RUNNING) + aue_stop(sc); + } + sc->aue_if_flags = ifp->if_flags; + error = 0; + break; + case SIOCADDMULTI: + case SIOCDELMULTI: + aue_setmulti(sc); + error = 0; + break; + case SIOCGIFMEDIA: + case SIOCSIFMEDIA: + mii = device_get_softc(sc->aue_miibus); + error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); + break; + default: + error = EINVAL; + break; + } + + (void)splx(s); + + return(error); +} + +static void aue_watchdog(ifp) + struct ifnet *ifp; +{ + struct aue_softc *sc; + + sc = ifp->if_softc; + + ifp->if_oerrors++; + printf("aue%d: watchdog timeout\n", sc->aue_unit); + + /* + * The polling business is a kludge to avoid allowing the + * USB code to call tsleep() in usbd_delay_ms(), which will + * kill us since the watchdog routine is invoked from + * interrupt context. + */ + sc->aue_udev->bus->use_polling++; + aue_stop(sc); + aue_init(sc); + sc->aue_udev->bus->use_polling--; + + if (ifp->if_snd.ifq_head != NULL) + aue_start(ifp); + + return; +} + +/* + * Stop the adapter and free any mbufs allocated to the + * RX and TX lists. + */ +static void aue_stop(sc) + struct aue_softc *sc; +{ + usbd_status err; + struct ifnet *ifp; + int i; + + ifp = &sc->arpcom.ac_if; + ifp->if_timer = 0; + + csr_write_1(sc, AUE_CTL0, 0); + csr_write_1(sc, AUE_CTL1, 0); + aue_reset(sc); + untimeout(aue_tick, sc, sc->aue_stat_ch); + + /* Stop transfers. */ + if (sc->aue_ep[AUE_ENDPT_RX] != NULL) { + err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_RX]); + if (err) { + printf("aue%d: abort rx pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + } + err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_RX]); + if (err) { + printf("aue%d: close rx pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + } + sc->aue_ep[AUE_ENDPT_RX] = NULL; + } + + if (sc->aue_ep[AUE_ENDPT_TX] != NULL) { + err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_TX]); + if (err) { + printf("aue%d: abort tx pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + } + err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_TX]); + if (err) { + printf("aue%d: close tx pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + } + sc->aue_ep[AUE_ENDPT_TX] = NULL; + } + + if (sc->aue_ep[AUE_ENDPT_INTR] != NULL) { + err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_INTR]); + if (err) { + printf("aue%d: abort intr pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + } + err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_INTR]); + if (err) { + printf("aue%d: close intr pipe failed: %s\n", + sc->aue_unit, usbd_errstr(err)); + } + sc->aue_ep[AUE_ENDPT_INTR] = NULL; + } + + /* Free RX resources. */ + for (i = 0; i < AUE_RX_LIST_CNT; i++) { + if (sc->aue_cdata.aue_rx_chain[i].aue_buf != NULL) { + free(sc->aue_cdata.aue_rx_chain[i].aue_buf, M_USBDEV); + sc->aue_cdata.aue_rx_chain[i].aue_buf = NULL; + } + if (sc->aue_cdata.aue_rx_chain[i].aue_mbuf != NULL) { + m_freem(sc->aue_cdata.aue_rx_chain[i].aue_mbuf); + sc->aue_cdata.aue_rx_chain[i].aue_mbuf = NULL; + } + if (sc->aue_cdata.aue_rx_chain[i].aue_xfer != NULL) { + usbd_free_xfer(sc->aue_cdata.aue_rx_chain[i].aue_xfer); + sc->aue_cdata.aue_rx_chain[i].aue_xfer = NULL; + } + } + + /* Free TX resources. */ + for (i = 0; i < AUE_TX_LIST_CNT; i++) { + if (sc->aue_cdata.aue_tx_chain[i].aue_buf != NULL) { + free(sc->aue_cdata.aue_tx_chain[i].aue_buf, M_USBDEV); + sc->aue_cdata.aue_tx_chain[i].aue_buf = NULL; + } + if (sc->aue_cdata.aue_tx_chain[i].aue_mbuf != NULL) { + m_freem(sc->aue_cdata.aue_tx_chain[i].aue_mbuf); + sc->aue_cdata.aue_tx_chain[i].aue_mbuf = NULL; + } + if (sc->aue_cdata.aue_tx_chain[i].aue_xfer != NULL) { + usbd_free_xfer(sc->aue_cdata.aue_tx_chain[i].aue_xfer); + sc->aue_cdata.aue_tx_chain[i].aue_xfer = NULL; + } + } + + free(sc->aue_cdata.aue_ibuf, M_USBDEV); + sc->aue_cdata.aue_ibuf = NULL; + + sc->aue_link = 0; + + ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); + + return; +} + +/* + * Stop all chip I/O so that the kernel's probe routines don't + * get confused by errant DMAs when rebooting. + */ +static void aue_shutdown(dev) + device_t dev; +{ + struct aue_softc *sc; + + sc = device_get_softc(dev); + + aue_reset(sc); + aue_stop(sc); + + return; +} |
