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|
/* $OpenBSD: if_mue.c,v 1.5 2018/09/19 07:47:54 mestre Exp $ */
/*
* Copyright (c) 2018 Kevin Lo <kevlo@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* Driver for Microchip LAN7500/LAN7800 chipsets. */
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/rwlock.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <dev/mii/miivar.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/usb/if_muereg.h>
#ifdef MUE_DEBUG
#define DPRINTF(x) do { if (muedebug) printf x; } while (0)
#define DPRINTFN(n,x) do { if (muedebug >= (n)) printf x; } while (0)
int muedebug = 0;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
/*
* Various supported device vendors/products.
*/
struct mue_type {
struct usb_devno mue_dev;
uint16_t mue_flags;
#define LAN7500 0x0001 /* LAN7500 */
};
const struct mue_type mue_devs[] = {
{ { USB_VENDOR_SMC2, USB_PRODUCT_SMC2_LAN7500 }, LAN7500 },
{ { USB_VENDOR_SMC2, USB_PRODUCT_SMC2_LAN7505 }, LAN7500 },
{ { USB_VENDOR_SMC2, USB_PRODUCT_SMC2_LAN7800 }, 0 },
{ { USB_VENDOR_SMC2, USB_PRODUCT_SMC2_LAN7801 }, 0 },
{ { USB_VENDOR_SMC2, USB_PRODUCT_SMC2_LAN7850 }, 0 }
};
#define mue_lookup(v, p) ((struct mue_type *)usb_lookup(mue_devs, v, p))
int mue_match(struct device *, void *, void *);
void mue_attach(struct device *, struct device *, void *);
int mue_detach(struct device *, int);
struct cfdriver mue_cd = {
NULL, "mue", DV_IFNET
};
const struct cfattach mue_ca = {
sizeof(struct mue_softc), mue_match, mue_attach, mue_detach
};
uint32_t mue_csr_read(struct mue_softc *, uint32_t);
int mue_csr_write(struct mue_softc *, uint32_t, uint32_t);
void mue_lock_mii(struct mue_softc *);
void mue_unlock_mii(struct mue_softc *);
int mue_mii_wait(struct mue_softc *);
int mue_miibus_readreg(struct device *, int, int);
void mue_miibus_writereg(struct device *, int, int, int);
void mue_miibus_statchg(struct device *);
int mue_ifmedia_upd(struct ifnet *);
void mue_ifmedia_sts(struct ifnet *, struct ifmediareq *);
int mue_eeprom_wait(struct mue_softc *);
uint8_t mue_eeprom_getbyte(struct mue_softc *, int, uint8_t *);
int mue_read_eeprom(struct mue_softc *, caddr_t, int, int);
int mue_dataport_wait(struct mue_softc *);
void mue_dataport_write(struct mue_softc *, uint32_t, uint32_t,
uint32_t, uint32_t *);
void mue_init_ltm(struct mue_softc *);
int mue_chip_init(struct mue_softc *);
void mue_set_macaddr(struct mue_softc *);
int mue_rx_list_init(struct mue_softc *);
int mue_tx_list_init(struct mue_softc *);
int mue_open_pipes(struct mue_softc *);
int mue_encap(struct mue_softc *, struct mbuf *, int);
void mue_iff(struct mue_softc *);
void mue_rxeof(struct usbd_xfer *, void *, usbd_status);
void mue_txeof(struct usbd_xfer *, void *, usbd_status);
void mue_init(void *);
int mue_ioctl(struct ifnet *, u_long, caddr_t);
void mue_watchdog(struct ifnet *);
void mue_reset(struct mue_softc *);
void mue_start(struct ifnet *);
void mue_stop(struct mue_softc *);
void mue_tick(void *);
void mue_tick_task(void *);
#define MUE_SETBIT(sc, reg, x) \
mue_csr_write(sc, reg, mue_csr_read(sc, reg) | (x))
#define MUE_CLRBIT(sc, reg, x) \
mue_csr_write(sc, reg, mue_csr_read(sc, reg) & ~(x))
#if defined(__arm__) || defined(__arm64__)
#include <dev/ofw/openfirm.h>
void
mue_enaddr_OF(struct mue_softc *sc)
{
char *device = "/axi/usb/hub/ethernet";
char prop[64];
int node;
if (sc->mue_dev.dv_unit != 0)
return;
/* Get the Raspberry Pi MAC address from FDT. */
if ((node = OF_finddevice("/aliases")) == -1)
return;
if (OF_getprop(node, "ethernet0", prop, sizeof(prop)) > 0 ||
OF_getprop(node, "ethernet", prop, sizeof(prop)) > 0)
device = prop;
if ((node = OF_finddevice(device)) == -1)
return;
if (OF_getprop(node, "local-mac-address", sc->arpcom.ac_enaddr,
sizeof(sc->arpcom.ac_enaddr)) != sizeof(sc->arpcom.ac_enaddr)) {
OF_getprop(node, "mac-address", sc->arpcom.ac_enaddr,
sizeof(sc->arpcom.ac_enaddr));
}
}
#else
#define mue_enaddr_OF(x) do {} while(0)
#endif
uint32_t
mue_csr_read(struct mue_softc *sc, uint32_t reg)
{
usb_device_request_t req;
usbd_status err;
uDWord val;
if (usbd_is_dying(sc->mue_udev))
return (0);
USETDW(val, 0);
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = MUE_UR_READREG;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, 4);
err = usbd_do_request(sc->mue_udev, &req, &val);
if (err) {
DPRINTF(("%s: mue_csr_read: reg=0x%x err=%s\n",
sc->mue_dev.dv_xname, reg, usbd_errstr(err)));
return (0);
}
return (UGETDW(val));
}
int
mue_csr_write(struct mue_softc *sc, uint32_t reg, uint32_t aval)
{
usb_device_request_t req;
usbd_status err;
uDWord val;
if (usbd_is_dying(sc->mue_udev))
return (0);
USETDW(val, aval);
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = MUE_UR_WRITEREG;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, 4);
err = usbd_do_request(sc->mue_udev, &req, &val);
if (err) {
DPRINTF(("%s: mue_csr_write: reg=0x%x err=%s\n",
sc->mue_dev.dv_xname, reg, usbd_errstr(err)));
return (-1);
}
return (0);
}
/*
* Get exclusive access to the MII registers.
*/
void
mue_lock_mii(struct mue_softc *sc)
{
sc->mue_refcnt++;
rw_enter_write(&sc->mue_mii_lock);
}
void
mue_unlock_mii(struct mue_softc *sc)
{
rw_exit_write(&sc->mue_mii_lock);
if (--sc->mue_refcnt < 0)
usb_detach_wakeup(&sc->mue_dev);
}
/*
* Wait for the MII to become ready.
*/
int
mue_mii_wait(struct mue_softc *sc)
{
int ntries;
for (ntries = 0; ntries < 100; ntries++) {
if (!(mue_csr_read(sc, MUE_MII_ACCESS) & MUE_MII_ACCESS_BUSY))
return (0);
DELAY(5);
}
printf("%s: MII timed out\n", sc->mue_dev.dv_xname);
return (1);
}
int
mue_miibus_readreg(struct device *dev, int phy, int reg)
{
struct mue_softc *sc = (void *)dev;
uint32_t val;
if (usbd_is_dying(sc->mue_udev))
return (0);
if (sc->mue_phyno != phy)
return (0);
mue_lock_mii(sc);
if (mue_mii_wait(sc) != 0)
return (0);
mue_csr_write(sc, MUE_MII_ACCESS, MUE_MII_ACCESS_READ |
MUE_MII_ACCESS_BUSY | MUE_MII_ACCESS_REGADDR(reg) |
MUE_MII_ACCESS_PHYADDR(phy));
if (mue_mii_wait(sc) != 0)
printf("%s: MII read timed out\n", sc->mue_dev.dv_xname);
val = mue_csr_read(sc, MUE_MII_DATA);
mue_unlock_mii(sc);
return (val & 0xffff);
}
void
mue_miibus_writereg(struct device *dev, int phy, int reg, int data)
{
struct mue_softc *sc = (void *)dev;
if (usbd_is_dying(sc->mue_udev))
return;
if (sc->mue_phyno != phy)
return;
mue_lock_mii(sc);
if (mue_mii_wait(sc) != 0)
return;
mue_csr_write(sc, MUE_MII_DATA, data);
mue_csr_write(sc, MUE_MII_ACCESS, MUE_MII_ACCESS_WRITE |
MUE_MII_ACCESS_BUSY | MUE_MII_ACCESS_REGADDR(reg) |
MUE_MII_ACCESS_PHYADDR(phy));
if (mue_mii_wait(sc) != 0)
printf("%s: MII write timed out\n", sc->mue_dev.dv_xname);
mue_unlock_mii(sc);
}
void
mue_miibus_statchg(struct device *dev)
{
struct mue_softc *sc = (void *)dev;
struct mii_data *mii = GET_MII(sc);
struct ifnet *ifp = GET_IFP(sc);
uint32_t flow, threshold;
if (mii == NULL || ifp == NULL ||
(ifp->if_flags & IFF_RUNNING) == 0)
return;
sc->mue_link = 0;
if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
(IFM_ACTIVE | IFM_AVALID)) {
switch (IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
case IFM_100_TX:
case IFM_1000_T:
sc->mue_link++;
break;
default:
break;
}
}
/* Lost link, do nothing. */
if (sc->mue_link == 0)
return;
if (!(sc->mue_flags & LAN7500)) {
if (sc->mue_udev->speed == USB_SPEED_SUPER) {
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
/* Disable U2 and enable U1. */
MUE_CLRBIT(sc, MUE_USB_CFG1,
MUE_USB_CFG1_DEV_U2_INIT_EN);
MUE_SETBIT(sc, MUE_USB_CFG1,
MUE_USB_CFG1_DEV_U1_INIT_EN);
} else {
/* Enable U1 and U2. */
MUE_SETBIT(sc, MUE_USB_CFG1,
MUE_USB_CFG1_DEV_U1_INIT_EN |
MUE_USB_CFG1_DEV_U2_INIT_EN);
}
}
}
threshold = 0;
flow = 0;
if (IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) {
if (IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) {
flow |= MUE_FLOW_TX_FCEN | MUE_FLOW_PAUSE_TIME;
/* XXX magic numbers come from Linux driver. */
if (sc->mue_flags & LAN7500) {
threshold = 0x820;
} else {
threshold =
(sc->mue_udev->speed == USB_SPEED_SUPER) ?
0x817 : 0x211;
}
}
if (IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE)
flow |= MUE_FLOW_RX_FCEN;
}
mue_csr_write(sc, (sc->mue_flags & LAN7500) ?
MUE_FCT_FLOW : MUE_7800_FCT_FLOW, threshold);
/* Threshold value should be set before enabling flow. */
mue_csr_write(sc, MUE_FLOW, flow);
}
/*
* Set media options.
*/
int
mue_ifmedia_upd(struct ifnet *ifp)
{
struct mue_softc *sc = ifp->if_softc;
struct mii_data *mii = GET_MII(sc);
if (mii->mii_instance) {
struct mii_softc *miisc;
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
mii_phy_reset(miisc);
}
return (mii_mediachg(mii));
}
/*
* Report current media status.
*/
void
mue_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct mue_softc *sc = ifp->if_softc;
struct mii_data *mii = GET_MII(sc);
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
int
mue_eeprom_wait(struct mue_softc *sc)
{
uint32_t val;
int ntries;
for (ntries = 0; ntries < 100; ntries++) {
val = mue_csr_read(sc, MUE_E2P_CMD);
if (!(val & MUE_E2P_CMD_BUSY) || (val & MUE_E2P_CMD_TIMEOUT))
return (0);
DELAY(5);
}
return (1);
}
uint8_t
mue_eeprom_getbyte(struct mue_softc *sc, int addr, uint8_t *dest)
{
uint32_t byte = 0;
int ntries;
for (ntries = 0; ntries < 100; ntries++) {
if (!(mue_csr_read(sc, MUE_E2P_CMD) & MUE_E2P_CMD_BUSY))
break;
DELAY(5);
}
if (ntries == 100) {
printf("%s: EEPROM failed to come ready\n",
sc->mue_dev.dv_xname);
return (ETIMEDOUT);
}
mue_csr_write(sc, MUE_E2P_CMD, MUE_E2P_CMD_READ | MUE_E2P_CMD_BUSY |
(addr & MUE_E2P_CMD_ADDR_MASK));
if (mue_eeprom_wait(sc) != 0) {
printf("%s: EEPROM read timed out\n", sc->mue_dev.dv_xname);
return (ETIMEDOUT);
}
byte = mue_csr_read(sc, MUE_E2P_DATA);
*dest = byte & 0xff;
return (0);
}
int
mue_read_eeprom(struct mue_softc *sc, caddr_t dest, int off, int cnt)
{
uint32_t val;
uint8_t byte = 0;
int i, err = 0;
/*
* EEPROM pins are muxed with the LED function on LAN7800 device.
*/
val = mue_csr_read(sc, MUE_HW_CFG);
if (sc->mue_product == USB_PRODUCT_SMC2_LAN7800) {
MUE_CLRBIT(sc, MUE_HW_CFG,
MUE_HW_CFG_LED0_EN | MUE_HW_CFG_LED1_EN);
}
for (i = 0; i < cnt; i++) {
err = mue_eeprom_getbyte(sc, off + i, &byte);
if (err)
break;
*(dest + i) = byte;
}
if (sc->mue_product == USB_PRODUCT_SMC2_LAN7800)
mue_csr_write(sc, MUE_HW_CFG, val);
return (err ? 1 : 0);
}
int
mue_dataport_wait(struct mue_softc *sc)
{
int ntries;
for (ntries = 0; ntries < 100; ntries++) {
if (mue_csr_read(sc, MUE_DP_SEL) & MUE_DP_SEL_DPRDY)
return (0);
DELAY(5);
}
printf("%s: dataport timed out\n", sc->mue_dev.dv_xname);
return (1);
}
void
mue_dataport_write(struct mue_softc *sc, uint32_t sel, uint32_t addr,
uint32_t cnt, uint32_t *data)
{
int i;
if (mue_dataport_wait(sc) != 0)
return;
mue_csr_write(sc, MUE_DP_SEL,
(mue_csr_read(sc, MUE_DP_SEL) & ~MUE_DP_SEL_RSEL_MASK) | sel);
for (i = 0; i < cnt; i++) {
mue_csr_write(sc, MUE_DP_ADDR, addr + i);
mue_csr_write(sc, MUE_DP_DATA, data[i]);
mue_csr_write(sc, MUE_DP_CMD, MUE_DP_CMD_WRITE);
if (mue_dataport_wait(sc) != 0)
return;
}
}
void
mue_init_ltm(struct mue_softc *sc)
{
uint8_t idx[6] = { 0 };
int i;
if (mue_csr_read(sc, MUE_USB_CFG1) & MUE_USB_CFG1_LTM_ENABLE) {
uint8_t temp[2];
if (mue_read_eeprom(sc, (caddr_t)&temp, MUE_EE_LTM_OFFSET, 2)) {
if (temp[0] != 24)
goto done;
mue_read_eeprom(sc, (caddr_t)&idx, temp[1] << 1, 24);
}
}
done:
for (i = 0; i < sizeof(idx); i++)
mue_csr_write(sc, MUE_LTM_INDEX(i), idx[i]);
}
int
mue_chip_init(struct mue_softc *sc)
{
uint32_t val;
int ntries;
if (sc->mue_flags & LAN7500) {
for (ntries = 0; ntries < 100; ntries++) {
if (mue_csr_read(sc, MUE_PMT_CTL) & MUE_PMT_CTL_READY)
break;
DELAY(1000); /* 1 msec */
}
if (ntries == 100) {
printf("%s: timeout waiting for device ready\n",
sc->mue_dev.dv_xname);
return (ETIMEDOUT);
}
}
MUE_SETBIT(sc, MUE_HW_CFG, MUE_HW_CFG_LRST);
for (ntries = 0; ntries < 1000; ntries++) {
if (!(mue_csr_read(sc, MUE_HW_CFG) & MUE_HW_CFG_LRST))
break;
DELAY(5);
}
if (ntries == 1000) {
printf("%s: timeout on lite software reset\n",
sc->mue_dev.dv_xname);
return (ETIMEDOUT);
}
/* Respond to the IN token with a NAK. */
if (sc->mue_flags & LAN7500)
MUE_SETBIT(sc, MUE_HW_CFG, MUE_HW_CFG_BIR);
else
MUE_SETBIT(sc, MUE_USB_CFG0, MUE_USB_CFG0_BIR);
if (sc->mue_flags & LAN7500) {
mue_csr_write(sc, MUE_BURST_CAP,
(sc->mue_udev->speed == USB_SPEED_HIGH) ?
MUE_BURST_MIN_BUFSZ : MUE_BURST_MAX_BUFSZ);
mue_csr_write(sc, MUE_BULK_IN_DELAY, MUE_DEFAULT_BULKIN_DELAY);
MUE_SETBIT(sc, MUE_HW_CFG, MUE_HW_CFG_BCE | MUE_HW_CFG_MEF);
/* Set undocumented FIFO sizes. */
mue_csr_write(sc, MUE_FCT_RX_FIFO_END, 0x27);
mue_csr_write(sc, MUE_FCT_TX_FIFO_END, 0x17);
} else {
/* Init LTM. */
mue_init_ltm(sc);
val = (sc->mue_udev->speed == USB_SPEED_SUPER) ?
MUE_7800_BURST_MIN_BUFSZ : MUE_7800_BURST_MAX_BUFSZ;
mue_csr_write(sc, MUE_7800_BURST_CAP, val);
mue_csr_write(sc, MUE_7800_BULK_IN_DELAY,
MUE_7800_DEFAULT_BULKIN_DELAY);
MUE_SETBIT(sc, MUE_HW_CFG, MUE_HW_CFG_MEF);
MUE_SETBIT(sc, MUE_USB_CFG0, MUE_USB_CFG0_BCE);
}
mue_csr_write(sc, MUE_INT_STATUS, 0xffffffff);
mue_csr_write(sc, (sc->mue_flags & LAN7500) ?
MUE_FCT_FLOW : MUE_7800_FCT_FLOW, 0);
mue_csr_write(sc, MUE_FLOW, 0);
/* Reset PHY. */
MUE_SETBIT(sc, MUE_PMT_CTL, MUE_PMT_CTL_PHY_RST);
for (ntries = 0; ntries < 100; ntries++) {
val = mue_csr_read(sc, MUE_PMT_CTL);
if (!(val & MUE_PMT_CTL_PHY_RST) && (val & MUE_PMT_CTL_READY))
break;
DELAY(10000);
}
if (ntries == 100) {
printf("%s: timeout waiting for PHY reset\n",
sc->mue_dev.dv_xname);
return (ETIMEDOUT);
}
/* LAN7801 only has RGMII mode. */
if (sc->mue_product == USB_PRODUCT_SMC2_LAN7801)
MUE_CLRBIT(sc, MUE_MAC_CR, MUE_MAC_CR_GMII_EN);
if (sc->mue_flags & LAN7500 || !sc->mue_eeprom_present) {
/* Allow MAC to detect speed and duplex from PHY. */
MUE_SETBIT(sc, MUE_MAC_CR, MUE_MAC_CR_AUTO_SPEED |
MUE_MAC_CR_AUTO_DUPLEX);
}
MUE_SETBIT(sc, MUE_MAC_TX, MUE_MAC_TX_TXEN);
MUE_SETBIT(sc, (sc->mue_flags & LAN7500) ?
MUE_FCT_TX_CTL : MUE_7800_FCT_TX_CTL, MUE_FCT_TX_CTL_EN);
/* Set the maximum frame size. */
MUE_CLRBIT(sc, MUE_MAC_RX, MUE_MAC_RX_RXEN);
MUE_SETBIT(sc, MUE_MAC_RX, MUE_MAC_RX_MAX_LEN(ETHER_MAX_LEN));
MUE_SETBIT(sc, MUE_MAC_RX, MUE_MAC_RX_RXEN);
MUE_SETBIT(sc, (sc->mue_flags & LAN7500) ?
MUE_FCT_RX_CTL : MUE_7800_FCT_RX_CTL, MUE_FCT_RX_CTL_EN);
return (0);
}
void
mue_set_macaddr(struct mue_softc *sc)
{
struct ifnet *ifp = &sc->arpcom.ac_if;
const uint8_t *eaddr = LLADDR(ifp->if_sadl);
uint32_t val, reg;
reg = (sc->mue_flags & LAN7500) ? MUE_ADDR_FILTX : MUE_7800_ADDR_FILTX;
val = (eaddr[3] << 24) | (eaddr[2] << 16) | (eaddr[1] << 8) | eaddr[0];
mue_csr_write(sc, MUE_RX_ADDRL, val);
mue_csr_write(sc, reg + 4, val);
val = (eaddr[5] << 8) | eaddr[4];
mue_csr_write(sc, MUE_RX_ADDRH, val);
mue_csr_write(sc, reg, val | MUE_ADDR_FILTX_VALID);
}
/*
* Probe for a Microchip chip.
*/
int
mue_match(struct device *parent, void *match, void *aux)
{
struct usb_attach_arg *uaa = aux;
if (uaa->iface == NULL || uaa->configno != 1)
return (UMATCH_NONE);
return (mue_lookup(uaa->vendor, uaa->product) != NULL ?
UMATCH_VENDOR_PRODUCT_CONF_IFACE : UMATCH_NONE);
}
void
mue_attach(struct device *parent, struct device *self, void *aux)
{
struct mue_softc *sc = (struct mue_softc *)self;
struct usb_attach_arg *uaa = aux;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
struct mii_data *mii;
struct ifnet *ifp;
int i, s;
sc->mue_udev = uaa->device;
sc->mue_iface = uaa->iface;
sc->mue_product = uaa->product;
sc->mue_flags = mue_lookup(uaa->vendor, uaa->product)->mue_flags;
usb_init_task(&sc->mue_tick_task, mue_tick_task, sc,
USB_TASK_TYPE_GENERIC);
rw_init(&sc->mue_mii_lock, "muemii");
usb_init_task(&sc->mue_stop_task, (void (*)(void *))mue_stop, sc,
USB_TASK_TYPE_GENERIC);
/* Decide on what our bufsize will be. */
if (sc->mue_flags & LAN7500)
sc->mue_bufsz = (sc->mue_udev->speed == USB_SPEED_HIGH) ?
MUE_MAX_BUFSZ : MUE_MIN_BUFSZ;
else
sc->mue_bufsz = MUE_7800_BUFSZ;
/* Find endpoints. */
id = usbd_get_interface_descriptor(sc->mue_iface);
for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->mue_iface, i);
if (ed == NULL) {
printf("%s: couldn't get ep %d\n",
sc->mue_dev.dv_xname, i);
return;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->mue_ed[MUE_ENDPT_RX] = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->mue_ed[MUE_ENDPT_TX] = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
sc->mue_ed[MUE_ENDPT_INTR] = ed->bEndpointAddress;
}
}
s = splnet();
sc->mue_phyno = 1;
/* Check if the EEPROM programmed indicator is present. */
mue_read_eeprom(sc, (caddr_t)&i, MUE_EE_IND_OFFSET, 1);
sc->mue_eeprom_present = (i == MUE_EEPROM_INDICATOR) ? 1 : 0;
if (mue_chip_init(sc) != 0) {
printf("%s: chip initialization failed\n",
sc->mue_dev.dv_xname);
splx(s);
return;
}
/* Get station address from the EEPROM. */
if (sc->mue_eeprom_present) {
if (mue_read_eeprom(sc, (caddr_t)&sc->arpcom.ac_enaddr,
MUE_EE_MAC_OFFSET, ETHER_ADDR_LEN)) {
printf("%s: failed to read station address\n",
sc->mue_dev.dv_xname);
splx(s);
return;
}
} else
mue_enaddr_OF(sc);
/* A Microchip chip was detected. Inform the world. */
printf("%s:", sc->mue_dev.dv_xname);
if (sc->mue_flags & LAN7500)
printf(" LAN7500");
else
printf(" LAN7800");
printf(", address %s\n", ether_sprintf(sc->arpcom.ac_enaddr));
/* Initialize interface info.*/
ifp = GET_IFP(sc);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = mue_ioctl;
ifp->if_start = mue_start;
ifp->if_watchdog = mue_watchdog;
strlcpy(ifp->if_xname, sc->mue_dev.dv_xname, IFNAMSIZ);
ifp->if_capabilities = IFCAP_VLAN_MTU;
/* Initialize MII/media info. */
mii = GET_MII(sc);
mii->mii_ifp = ifp;
mii->mii_readreg = mue_miibus_readreg;
mii->mii_writereg = mue_miibus_writereg;
mii->mii_statchg = mue_miibus_statchg;
mii->mii_flags = MIIF_AUTOTSLEEP;
ifmedia_init(&mii->mii_media, 0, mue_ifmedia_upd, mue_ifmedia_sts);
mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY,
MIIF_DOPAUSE);
if (LIST_FIRST(&mii->mii_phys) == NULL) {
ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL);
ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE);
} else
ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO);
/* Attach the interface. */
if_attach(ifp);
ether_ifattach(ifp);
timeout_set(&sc->mue_stat_ch, mue_tick, sc);
splx(s);
}
int
mue_detach(struct device *self, int flags)
{
struct mue_softc *sc = (struct mue_softc *)self;
struct ifnet *ifp = GET_IFP(sc);
int s;
if (timeout_initialized(&sc->mue_stat_ch))
timeout_del(&sc->mue_stat_ch);
if (sc->mue_ep[MUE_ENDPT_TX] != NULL)
usbd_abort_pipe(sc->mue_ep[MUE_ENDPT_TX]);
if (sc->mue_ep[MUE_ENDPT_RX] != NULL)
usbd_abort_pipe(sc->mue_ep[MUE_ENDPT_RX]);
if (sc->mue_ep[MUE_ENDPT_INTR] != NULL)
usbd_abort_pipe(sc->mue_ep[MUE_ENDPT_INTR]);
/*
* Remove any pending tasks. They cannot be executing because they run
* in the same thread as detach.
*/
usb_rem_task(sc->mue_udev, &sc->mue_tick_task);
usb_rem_task(sc->mue_udev, &sc->mue_stop_task);
s = splusb();
if (--sc->mue_refcnt >= 0) {
/* Wait for processes to go away */
usb_detach_wait(&sc->mue_dev);
}
if (ifp->if_flags & IFF_RUNNING)
mue_stop(sc);
mii_detach(&sc->mue_mii, MII_PHY_ANY, MII_OFFSET_ANY);
ifmedia_delete_instance(&sc->mue_mii.mii_media, IFM_INST_ANY);
if (ifp->if_softc != NULL) {
ether_ifdetach(ifp);
if_detach(ifp);
}
if (--sc->mue_refcnt >= 0) {
/* Wait for processes to go away. */
usb_detach_wait(&sc->mue_dev);
}
splx(s);
return (0);
}
int
mue_rx_list_init(struct mue_softc *sc)
{
struct mue_cdata *cd;
struct mue_chain *c;
int i;
DPRINTF(("%s: %s: enter\n", sc->mue_dev.dv_xname, __func__));
cd = &sc->mue_cdata;
for (i = 0; i < MUE_RX_LIST_CNT; i++) {
c = &cd->mue_rx_chain[i];
c->mue_sc = sc;
c->mue_idx = i;
c->mue_mbuf = NULL;
if (c->mue_xfer == NULL) {
c->mue_xfer = usbd_alloc_xfer(sc->mue_udev);
if (c->mue_xfer == NULL)
return (ENOBUFS);
c->mue_buf = usbd_alloc_buffer(c->mue_xfer,
sc->mue_bufsz);
if (c->mue_buf == NULL) {
usbd_free_xfer(c->mue_xfer);
return (ENOBUFS);
}
}
}
return (0);
}
int
mue_tx_list_init(struct mue_softc *sc)
{
struct mue_cdata *cd;
struct mue_chain *c;
int i;
DPRINTF(("%s: %s: enter\n", sc->mue_dev.dv_xname, __func__));
cd = &sc->mue_cdata;
for (i = 0; i < MUE_TX_LIST_CNT; i++) {
c = &cd->mue_tx_chain[i];
c->mue_sc = sc;
c->mue_idx = i;
c->mue_mbuf = NULL;
if (c->mue_xfer == NULL) {
c->mue_xfer = usbd_alloc_xfer(sc->mue_udev);
if (c->mue_xfer == NULL)
return (ENOBUFS);
c->mue_buf = usbd_alloc_buffer(c->mue_xfer,
sc->mue_bufsz);
if (c->mue_buf == NULL) {
usbd_free_xfer(c->mue_xfer);
return (ENOBUFS);
}
}
}
return (0);
}
int
mue_open_pipes(struct mue_softc *sc)
{
struct mue_chain *c;
usbd_status err;
int i;
/* Open RX and TX pipes. */
err = usbd_open_pipe(sc->mue_iface, sc->mue_ed[MUE_ENDPT_RX],
USBD_EXCLUSIVE_USE, &sc->mue_ep[MUE_ENDPT_RX]);
if (err) {
printf("%s: open rx pipe failed: %s\n",
sc->mue_dev.dv_xname, usbd_errstr(err));
return (EIO);
}
err = usbd_open_pipe(sc->mue_iface, sc->mue_ed[MUE_ENDPT_TX],
USBD_EXCLUSIVE_USE, &sc->mue_ep[MUE_ENDPT_TX]);
if (err) {
printf("%s: open tx pipe failed: %s\n",
sc->mue_dev.dv_xname, usbd_errstr(err));
return (EIO);
}
/* Start up the receive pipe. */
for (i = 0; i < MUE_RX_LIST_CNT; i++) {
c = &sc->mue_cdata.mue_rx_chain[i];
usbd_setup_xfer(c->mue_xfer, sc->mue_ep[MUE_ENDPT_RX],
c, c->mue_buf, sc->mue_bufsz,
USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT,
mue_rxeof);
usbd_transfer(c->mue_xfer);
}
return (0);
}
int
mue_encap(struct mue_softc *sc, struct mbuf *m, int idx)
{
struct mue_chain *c;
usbd_status err;
struct mue_txbuf_hdr hdr;
int length;
c = &sc->mue_cdata.mue_tx_chain[idx];
hdr.tx_cmd_a = htole32((m->m_pkthdr.len & MUE_TX_CMD_A_LEN_MASK) |
MUE_TX_CMD_A_FCS);
/* Disable segmentation offload. */
hdr.tx_cmd_b = htole32(0);
memcpy(c->mue_buf, &hdr, sizeof(hdr));
length = sizeof(hdr);
m_copydata(m, 0, m->m_pkthdr.len, c->mue_buf + length);
length += m->m_pkthdr.len;
c->mue_mbuf = m;
usbd_setup_xfer(c->mue_xfer, sc->mue_ep[MUE_ENDPT_TX],
c, c->mue_buf, length, USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
10000, mue_txeof);
/* Transmit */
err = usbd_transfer(c->mue_xfer);
if (err != USBD_IN_PROGRESS) {
mue_stop(sc);
return(EIO);
}
sc->mue_cdata.mue_tx_cnt++;
return(0);
}
void
mue_iff(struct mue_softc *sc)
{
struct ifnet *ifp = GET_IFP(sc);
struct arpcom *ac = &sc->arpcom;
struct ether_multi *enm;
struct ether_multistep step;
uint32_t h = 0, hashtbl[MUE_DP_SEL_VHF_HASH_LEN], reg, rxfilt;
if (usbd_is_dying(sc->mue_udev))
return;
reg = (sc->mue_flags & LAN7500) ? MUE_RFE_CTL : MUE_7800_RFE_CTL;
rxfilt = mue_csr_read(sc, reg);
rxfilt &= ~(MUE_RFE_CTL_PERFECT | MUE_RFE_CTL_MULTICAST_HASH |
MUE_RFE_CTL_UNICAST | MUE_RFE_CTL_MULTICAST);
memset(hashtbl, 0, sizeof(hashtbl));
ifp->if_flags &= ~IFF_ALLMULTI;
/* Always accept broadcast frames. */
rxfilt |= MUE_RFE_CTL_BROADCAST;
if (ifp->if_flags & IFF_PROMISC || ac->ac_multirangecnt > 0) {
ifp->if_flags |= IFF_ALLMULTI;
rxfilt |= MUE_RFE_CTL_MULTICAST;
if (ifp->if_flags & IFF_PROMISC)
rxfilt |= MUE_RFE_CTL_UNICAST | MUE_RFE_CTL_MULTICAST;
} else {
rxfilt |= MUE_RFE_CTL_PERFECT | MUE_RFE_CTL_MULTICAST_HASH;
/* Now program new ones. */
ETHER_FIRST_MULTI(step, ac, enm);
while (enm != NULL) {
h = ether_crc32_be(enm->enm_addrlo,
ETHER_ADDR_LEN) >> 23;
hashtbl[h / 32] |= 1 << (h % 32);
ETHER_NEXT_MULTI(step, enm);
}
}
mue_dataport_write(sc, MUE_DP_SEL_VHF, MUE_DP_SEL_VHF_VLAN_LEN,
MUE_DP_SEL_VHF_HASH_LEN, hashtbl);
mue_csr_write(sc, reg, rxfilt);
}
void
mue_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status)
{
struct mue_chain *c = (struct mue_chain *)priv;
struct mue_softc *sc = c->mue_sc;
struct ifnet *ifp = GET_IFP(sc);
struct mbuf_list ml = MBUF_LIST_INITIALIZER();
struct mbuf *m;
struct mue_rxbuf_hdr hdr;
u_char *buf = c->mue_buf;
uint32_t total_len;
int pktlen = 0;
int s;
if (usbd_is_dying(sc->mue_udev))
return;
if (!(ifp->if_flags & IFF_RUNNING))
return;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
return;
if (usbd_ratecheck(&sc->mue_rx_notice)) {
printf("%s: usb errors on rx: %s\n",
sc->mue_dev.dv_xname, usbd_errstr(status));
}
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->mue_ep[MUE_ENDPT_RX]);
goto done;
}
usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
do {
if (total_len < sizeof(hdr)) {
ifp->if_ierrors++;
goto done;
}
buf += pktlen;
memcpy(&hdr, buf, sizeof(hdr));
total_len -= sizeof(hdr);
if (letoh32(hdr.rx_cmd_a) & MUE_RX_CMD_A_RED) {
ifp->if_ierrors++;
goto done;
}
pktlen = letoh32(hdr.rx_cmd_a) & MUE_RX_CMD_A_LEN_MASK;
if (sc->mue_flags & LAN7500)
pktlen -= 2;
if (pktlen > total_len) {
ifp->if_ierrors++;
goto done;
}
buf += sizeof(hdr);
if (total_len < pktlen)
total_len = 0;
else
total_len -= pktlen;
m = m_devget(buf, pktlen - ETHER_CRC_LEN, ETHER_ALIGN);
if (m == NULL) {
DPRINTF(("unable to allocate mbuf for next packet\n"));
ifp->if_ierrors++;
goto done;
}
ml_enqueue(&ml, m);
} while (total_len > 0);
done:
s = splnet();
if_input(ifp, &ml);
splx(s);
memset(c->mue_buf, 0, sc->mue_bufsz);
/* Setup new transfer. */
usbd_setup_xfer(xfer, sc->mue_ep[MUE_ENDPT_RX],
c, c->mue_buf, sc->mue_bufsz, USBD_SHORT_XFER_OK | USBD_NO_COPY,
USBD_NO_TIMEOUT, mue_rxeof);
usbd_transfer(xfer);
DPRINTFN(10,("%s: %s: start rx\n", sc->mue_dev.dv_xname, __func__));
}
void
mue_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status)
{
struct mue_chain *c = priv;
struct mue_softc *sc = c->mue_sc;
struct ifnet *ifp = GET_IFP(sc);
int s;
if (usbd_is_dying(sc->mue_udev))
return;
s = splnet();
DPRINTFN(10,("%s: %s: enter status=%d\n", sc->mue_dev.dv_xname,
__func__, status));
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
splx(s);
return;
}
ifp->if_oerrors++;
printf("%s: usb error on tx: %s\n", sc->mue_dev.dv_xname,
usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->mue_ep[MUE_ENDPT_TX]);
splx(s);
return;
}
ifp->if_timer = 0;
ifq_clr_oactive(&ifp->if_snd);
m_freem(c->mue_mbuf);
c->mue_mbuf = NULL;
if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
mue_start(ifp);
splx(s);
}
void
mue_init(void *xsc)
{
struct mue_softc *sc = xsc;
struct ifnet *ifp = GET_IFP(sc);
int s;
s = splnet();
/* Cancel pending I/O and free all TX/RX buffers. */
mue_reset(sc);
/* Set MAC address. */
mue_set_macaddr(sc);
/* Init RX ring. */
if (mue_rx_list_init(sc) == ENOBUFS) {
printf("%s: rx list init failed\n", sc->mue_dev.dv_xname);
splx(s);
return;
}
/* Init TX ring. */
if (mue_tx_list_init(sc) == ENOBUFS) {
printf("%s: tx list init failed\n", sc->mue_dev.dv_xname);
splx(s);
return;
}
/* Program promiscuous mode and multicast filters. */
mue_iff(sc);
if (mue_open_pipes(sc) != 0) {
splx(s);
return;
}
sc->mue_link = 0;
ifp->if_flags |= IFF_RUNNING;
ifq_clr_oactive(&ifp->if_snd);
splx(s);
timeout_add_sec(&sc->mue_stat_ch, 1);
}
int
mue_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct mue_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splnet();
switch(cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
if (!(ifp->if_flags & IFF_RUNNING))
mue_init(sc);
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (ifp->if_flags & IFF_RUNNING)
error = ENETRESET;
else
mue_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING)
mue_stop(sc);
}
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->mue_mii.mii_media, cmd);
break;
default:
error = ether_ioctl(ifp, &sc->arpcom, cmd, data);
}
if (error == ENETRESET) {
if (ifp->if_flags & IFF_RUNNING)
mue_iff(sc);
error = 0;
}
splx(s);
return(error);
}
void
mue_watchdog(struct ifnet *ifp)
{
struct mue_softc *sc = ifp->if_softc;
struct mue_chain *c;
usbd_status stat;
int s;
ifp->if_oerrors++;
printf("%s: watchdog timeout\n", sc->mue_dev.dv_xname);
s = splusb();
c = &sc->mue_cdata.mue_tx_chain[0];
usbd_get_xfer_status(c->mue_xfer, NULL, NULL, NULL, &stat);
mue_txeof(c->mue_xfer, c, stat);
if (!IFQ_IS_EMPTY(&ifp->if_snd))
mue_start(ifp);
splx(s);
}
void
mue_reset(struct mue_softc *sc)
{
if (usbd_is_dying(sc->mue_udev))
return;
/* Wait a little while for the chip to get its brains in order. */
DELAY(1000);
}
void
mue_start(struct ifnet *ifp)
{
struct mue_softc *sc = ifp->if_softc;
struct mbuf *m_head = NULL;
if (!sc->mue_link)
return;
if (ifq_is_oactive(&ifp->if_snd))
return;
m_head = ifq_deq_begin(&ifp->if_snd);
if (m_head == NULL)
return;
if (mue_encap(sc, m_head, 0)) {
ifq_deq_rollback(&ifp->if_snd, m_head);
ifq_set_oactive(&ifp->if_snd);
return;
}
ifq_deq_commit(&ifp->if_snd, m_head);
/* If there's a BPF listener, bounce a copy of this frame to him. */
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT);
#endif
ifq_set_oactive(&ifp->if_snd);
/* Set a timeout in case the chip goes out to lunch. */
ifp->if_timer = 5;
}
void
mue_stop(struct mue_softc *sc)
{
struct ifnet *ifp;
ifp = GET_IFP(sc);
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_RUNNING;
ifq_clr_oactive(&ifp->if_snd);
timeout_del(&sc->mue_stat_ch);
sc->mue_link = 0;
}
void
mue_tick(void *xsc)
{
struct mue_softc *sc = xsc;
if (sc == NULL)
return;
if (usbd_is_dying(sc->mue_udev))
return;
/* Perform periodic stuff in process context. */
usb_add_task(sc->mue_udev, &sc->mue_tick_task);
}
void
mue_tick_task(void *xsc)
{
struct mue_softc *sc =xsc;
struct mii_data *mii;
int s;
if (sc == NULL)
return;
if (usbd_is_dying(sc->mue_udev))
return;
mii = GET_MII(sc);
s = splnet();
mii_tick(mii);
if (sc->mue_link == 0)
mue_miibus_statchg(&sc->mue_dev);
timeout_add_sec(&sc->mue_stat_ch, 1);
splx(s);
}
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