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freebsd-dev/sys/dev/usb/net/if_aue.c
Matt Macy d7c5a620e2 ifnet: Replace if_addr_lock rwlock with epoch + mutex 
Run on LLNW canaries and tested by pho@

gallatin:
Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5
based ConnectX 4-LX NIC, I see an almost 12% improvement in received
packet rate, and a larger improvement in bytes delivered all the way
to userspace.

When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1,
I see, using nstat -I mce0 1 before the patch:

InMpps OMpps  InGbs  OGbs err TCP Est %CPU syscalls csw     irq GBfree
4.98   0.00   4.42   0.00 4235592     33   83.80 4720653 2149771   1235 247.32
4.73   0.00   4.20   0.00 4025260     33   82.99 4724900 2139833   1204 247.32
4.72   0.00   4.20   0.00 4035252     33   82.14 4719162 2132023   1264 247.32
4.71   0.00   4.21   0.00 4073206     33   83.68 4744973 2123317   1347 247.32
4.72   0.00   4.21   0.00 4061118     33   80.82 4713615 2188091   1490 247.32
4.72   0.00   4.21   0.00 4051675     33   85.29 4727399 2109011   1205 247.32
4.73   0.00   4.21   0.00 4039056     33   84.65 4724735 2102603   1053 247.32

After the patch

InMpps OMpps  InGbs  OGbs err TCP Est %CPU syscalls csw     irq GBfree
5.43   0.00   4.20   0.00 3313143     33   84.96 5434214 1900162   2656 245.51
5.43   0.00   4.20   0.00 3308527     33   85.24 5439695 1809382   2521 245.51
5.42   0.00   4.19   0.00 3316778     33   87.54 5416028 1805835   2256 245.51
5.42   0.00   4.19   0.00 3317673     33   90.44 5426044 1763056   2332 245.51
5.42   0.00   4.19   0.00 3314839     33   88.11 5435732 1792218   2499 245.52
5.44   0.00   4.19   0.00 3293228     33   91.84 5426301 1668597   2121 245.52

Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch

Reviewed by:	gallatin
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D15366
2018-05-18 20:13:34 +00:00

1069 lines
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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1997, 1998, 1999, 2000
* Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
*
* Copyright (c) 2006
* Alfred Perlstein <alfred@FreeBSD.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. 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* ADMtek AN986 Pegasus and AN8511 Pegasus II 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
*
* SMP locking by Alfred Perlstein <alfred@FreeBSD.org>.
* RED Inc.
*/
/*
* 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 uether_do_request(). Packet
* transfers are done using usbd_transfer() and friends.
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <net/if.h>
#include <net/if_var.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR aue_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/net/usb_ethernet.h>
#include <dev/usb/net/if_auereg.h>
#ifdef USB_DEBUG
static int aue_debug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, aue, CTLFLAG_RW, 0, "USB aue");
SYSCTL_INT(_hw_usb_aue, OID_AUTO, debug, CTLFLAG_RWTUN, &aue_debug, 0,
"Debug level");
#endif
/*
* Various supported device vendors/products.
*/
static const STRUCT_USB_HOST_ID aue_devs[] = {
#define AUE_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
AUE_DEV(3COM, 3C460B, AUE_FLAG_PII),
AUE_DEV(ABOCOM, DSB650TX_PNA, 0),
AUE_DEV(ABOCOM, UFE1000, AUE_FLAG_LSYS),
AUE_DEV(ABOCOM, XX10, 0),
AUE_DEV(ABOCOM, XX1, AUE_FLAG_PNA | AUE_FLAG_PII),
AUE_DEV(ABOCOM, XX2, AUE_FLAG_PII),
AUE_DEV(ABOCOM, XX4, AUE_FLAG_PNA),
AUE_DEV(ABOCOM, XX5, AUE_FLAG_PNA),
AUE_DEV(ABOCOM, XX6, AUE_FLAG_PII),
AUE_DEV(ABOCOM, XX7, AUE_FLAG_PII),
AUE_DEV(ABOCOM, XX8, AUE_FLAG_PII),
AUE_DEV(ABOCOM, XX9, AUE_FLAG_PNA),
AUE_DEV(ACCTON, SS1001, AUE_FLAG_PII),
AUE_DEV(ACCTON, USB320_EC, 0),
AUE_DEV(ADMTEK, PEGASUSII_2, AUE_FLAG_PII),
AUE_DEV(ADMTEK, PEGASUSII_3, AUE_FLAG_PII),
AUE_DEV(ADMTEK, PEGASUSII_4, AUE_FLAG_PII),
AUE_DEV(ADMTEK, PEGASUSII, AUE_FLAG_PII),
AUE_DEV(ADMTEK, PEGASUS, AUE_FLAG_PNA | AUE_FLAG_DUAL_PHY),
AUE_DEV(AEI, FASTETHERNET, AUE_FLAG_PII),
AUE_DEV(ALLIEDTELESYN, ATUSB100, AUE_FLAG_PII),
AUE_DEV(ATEN, UC110T, AUE_FLAG_PII),
AUE_DEV(BELKIN, USB2LAN, AUE_FLAG_PII),
AUE_DEV(BILLIONTON, USB100, 0),
AUE_DEV(BILLIONTON, USBE100, AUE_FLAG_PII),
AUE_DEV(BILLIONTON, USBEL100, 0),
AUE_DEV(BILLIONTON, USBLP100, AUE_FLAG_PNA),
AUE_DEV(COREGA, FETHER_USB_TXS, AUE_FLAG_PII),
AUE_DEV(COREGA, FETHER_USB_TX, 0),
AUE_DEV(DLINK, DSB650TX1, AUE_FLAG_LSYS),
AUE_DEV(DLINK, DSB650TX2, AUE_FLAG_LSYS | AUE_FLAG_PII),
AUE_DEV(DLINK, DSB650TX3, AUE_FLAG_LSYS | AUE_FLAG_PII),
AUE_DEV(DLINK, DSB650TX4, AUE_FLAG_LSYS | AUE_FLAG_PII),
AUE_DEV(DLINK, DSB650TX_PNA, AUE_FLAG_PNA),
AUE_DEV(DLINK, DSB650TX, AUE_FLAG_LSYS),
AUE_DEV(DLINK, DSB650, AUE_FLAG_LSYS),
AUE_DEV(ELCON, PLAN, AUE_FLAG_PNA | AUE_FLAG_PII),
AUE_DEV(ELECOM, LDUSB20, AUE_FLAG_PII),
AUE_DEV(ELECOM, LDUSBLTX, AUE_FLAG_PII),
AUE_DEV(ELECOM, LDUSBTX0, 0),
AUE_DEV(ELECOM, LDUSBTX1, AUE_FLAG_LSYS),
AUE_DEV(ELECOM, LDUSBTX2, 0),
AUE_DEV(ELECOM, LDUSBTX3, AUE_FLAG_LSYS),
AUE_DEV(ELSA, USB2ETHERNET, 0),
AUE_DEV(GIGABYTE, GNBR402W, 0),
AUE_DEV(HAWKING, UF100, AUE_FLAG_PII),
AUE_DEV(HP, HN210E, AUE_FLAG_PII),
AUE_DEV(IODATA, USBETTXS, AUE_FLAG_PII),
AUE_DEV(IODATA, USBETTX, 0),
AUE_DEV(KINGSTON, KNU101TX, 0),
AUE_DEV(LINKSYS, USB100H1, AUE_FLAG_LSYS | AUE_FLAG_PNA),
AUE_DEV(LINKSYS, USB100TX, AUE_FLAG_LSYS),
AUE_DEV(LINKSYS, USB10TA, AUE_FLAG_LSYS),
AUE_DEV(LINKSYS, USB10TX1, AUE_FLAG_LSYS | AUE_FLAG_PII),
AUE_DEV(LINKSYS, USB10TX2, AUE_FLAG_LSYS | AUE_FLAG_PII),
AUE_DEV(LINKSYS, USB10T, AUE_FLAG_LSYS),
AUE_DEV(MELCO, LUA2TX5, AUE_FLAG_PII),
AUE_DEV(MELCO, LUATX1, 0),
AUE_DEV(MELCO, LUATX5, 0),
AUE_DEV(MICROSOFT, MN110, AUE_FLAG_PII),
AUE_DEV(NETGEAR, FA101, AUE_FLAG_PII),
AUE_DEV(SIEMENS, SPEEDSTREAM, AUE_FLAG_PII),
AUE_DEV(SIIG2, USBTOETHER, AUE_FLAG_PII),
AUE_DEV(SMARTBRIDGES, SMARTNIC, AUE_FLAG_PII),
AUE_DEV(SMC, 2202USB, 0),
AUE_DEV(SMC, 2206USB, AUE_FLAG_PII),
AUE_DEV(SOHOWARE, NUB100, 0),
AUE_DEV(SOHOWARE, NUB110, AUE_FLAG_PII),
#undef AUE_DEV
};
/* prototypes */
static device_probe_t aue_probe;
static device_attach_t aue_attach;
static device_detach_t aue_detach;
static miibus_readreg_t aue_miibus_readreg;
static miibus_writereg_t aue_miibus_writereg;
static miibus_statchg_t aue_miibus_statchg;
static usb_callback_t aue_intr_callback;
static usb_callback_t aue_bulk_read_callback;
static usb_callback_t aue_bulk_write_callback;
static uether_fn_t aue_attach_post;
static uether_fn_t aue_init;
static uether_fn_t aue_stop;
static uether_fn_t aue_start;
static uether_fn_t aue_tick;
static uether_fn_t aue_setmulti;
static uether_fn_t aue_setpromisc;
static uint8_t aue_csr_read_1(struct aue_softc *, uint16_t);
static uint16_t aue_csr_read_2(struct aue_softc *, uint16_t);
static void aue_csr_write_1(struct aue_softc *, uint16_t, uint8_t);
static void aue_csr_write_2(struct aue_softc *, uint16_t, uint16_t);
static uint16_t aue_eeprom_getword(struct aue_softc *, int);
static void aue_reset(struct aue_softc *);
static void aue_reset_pegasus_II(struct aue_softc *);
static int aue_ifmedia_upd(struct ifnet *);
static void aue_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static const struct usb_config aue_config[AUE_N_TRANSFER] = {
[AUE_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 = aue_bulk_write_callback,
.timeout = 10000, /* 10 seconds */
},
[AUE_BULK_DT_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = (MCLBYTES + 4 + ETHER_CRC_LEN),
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = aue_bulk_read_callback,
},
[AUE_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 = aue_intr_callback,
},
};
static device_method_t aue_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, aue_probe),
DEVMETHOD(device_attach, aue_attach),
DEVMETHOD(device_detach, aue_detach),
/* MII interface */
DEVMETHOD(miibus_readreg, aue_miibus_readreg),
DEVMETHOD(miibus_writereg, aue_miibus_writereg),
DEVMETHOD(miibus_statchg, aue_miibus_statchg),
DEVMETHOD_END
};
static driver_t aue_driver = {
.name = "aue",
.methods = aue_methods,
.size = sizeof(struct aue_softc)
};
static devclass_t aue_devclass;
DRIVER_MODULE(aue, uhub, aue_driver, aue_devclass, NULL, 0);
DRIVER_MODULE(miibus, aue, miibus_driver, miibus_devclass, 0, 0);
MODULE_DEPEND(aue, uether, 1, 1, 1);
MODULE_DEPEND(aue, usb, 1, 1, 1);
MODULE_DEPEND(aue, ether, 1, 1, 1);
MODULE_DEPEND(aue, miibus, 1, 1, 1);
MODULE_VERSION(aue, 1);
USB_PNP_HOST_INFO(aue_devs);
static const struct usb_ether_methods aue_ue_methods = {
.ue_attach_post = aue_attach_post,
.ue_start = aue_start,
.ue_init = aue_init,
.ue_stop = aue_stop,
.ue_tick = aue_tick,
.ue_setmulti = aue_setmulti,
.ue_setpromisc = aue_setpromisc,
.ue_mii_upd = aue_ifmedia_upd,
.ue_mii_sts = aue_ifmedia_sts,
};
#define AUE_SETBIT(sc, reg, x) \
aue_csr_write_1(sc, reg, aue_csr_read_1(sc, reg) | (x))
#define AUE_CLRBIT(sc, reg, x) \
aue_csr_write_1(sc, reg, aue_csr_read_1(sc, reg) & ~(x))
static uint8_t
aue_csr_read_1(struct aue_softc *sc, uint16_t reg)
{
struct usb_device_request req;
usb_error_t err;
uint8_t val;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = AUE_UR_READREG;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, 1);
err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
if (err)
return (0);
return (val);
}
static uint16_t
aue_csr_read_2(struct aue_softc *sc, uint16_t reg)
{
struct usb_device_request req;
usb_error_t err;
uint16_t val;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = AUE_UR_READREG;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, 2);
err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
if (err)
return (0);
return (le16toh(val));
}
static void
aue_csr_write_1(struct aue_softc *sc, uint16_t reg, uint8_t val)
{
struct usb_device_request req;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = AUE_UR_WRITEREG;
req.wValue[0] = val;
req.wValue[1] = 0;
USETW(req.wIndex, reg);
USETW(req.wLength, 1);
if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) {
/* error ignored */
}
}
static void
aue_csr_write_2(struct aue_softc *sc, uint16_t reg, uint16_t val)
{
struct usb_device_request req;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = AUE_UR_WRITEREG;
USETW(req.wValue, val);
USETW(req.wIndex, reg);
USETW(req.wLength, 2);
val = htole16(val);
if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) {
/* error ignored */
}
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
*/
static uint16_t
aue_eeprom_getword(struct aue_softc *sc, int addr)
{
int i;
aue_csr_write_1(sc, AUE_EE_REG, addr);
aue_csr_write_1(sc, AUE_EE_CTL, AUE_EECTL_READ);
for (i = 0; i != AUE_TIMEOUT; i++) {
if (aue_csr_read_1(sc, AUE_EE_CTL) & AUE_EECTL_DONE)
break;
if (uether_pause(&sc->sc_ue, hz / 100))
break;
}
if (i == AUE_TIMEOUT)
device_printf(sc->sc_ue.ue_dev, "EEPROM read timed out\n");
return (aue_csr_read_2(sc, AUE_EE_DATA));
}
/*
* Read station address(offset 0) from the EEPROM.
*/
static void
aue_read_mac(struct aue_softc *sc, uint8_t *eaddr)
{
int i, offset;
uint16_t word;
for (i = 0, offset = 0; i < ETHER_ADDR_LEN / 2; i++) {
word = aue_eeprom_getword(sc, offset + i);
eaddr[i * 2] = (uint8_t)word;
eaddr[i * 2 + 1] = (uint8_t)(word >> 8);
}
}
static int
aue_miibus_readreg(device_t dev, int phy, int reg)
{
struct aue_softc *sc = device_get_softc(dev);
int i, locked;
uint16_t val = 0;
locked = mtx_owned(&sc->sc_mtx);
if (!locked)
AUE_LOCK(sc);
/*
* 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 (sc->sc_flags & AUE_FLAG_DUAL_PHY) {
if (phy == 3)
goto done;
#if 0
if (phy != 1)
goto done;
#endif
}
aue_csr_write_1(sc, AUE_PHY_ADDR, phy);
aue_csr_write_1(sc, AUE_PHY_CTL, reg | AUE_PHYCTL_READ);
for (i = 0; i != AUE_TIMEOUT; i++) {
if (aue_csr_read_1(sc, AUE_PHY_CTL) & AUE_PHYCTL_DONE)
break;
if (uether_pause(&sc->sc_ue, hz / 100))
break;
}
if (i == AUE_TIMEOUT)
device_printf(sc->sc_ue.ue_dev, "MII read timed out\n");
val = aue_csr_read_2(sc, AUE_PHY_DATA);
done:
if (!locked)
AUE_UNLOCK(sc);
return (val);
}
static int
aue_miibus_writereg(device_t dev, int phy, int reg, int data)
{
struct aue_softc *sc = device_get_softc(dev);
int i;
int locked;
if (phy == 3)
return (0);
locked = mtx_owned(&sc->sc_mtx);
if (!locked)
AUE_LOCK(sc);
aue_csr_write_2(sc, AUE_PHY_DATA, data);
aue_csr_write_1(sc, AUE_PHY_ADDR, phy);
aue_csr_write_1(sc, AUE_PHY_CTL, reg | AUE_PHYCTL_WRITE);
for (i = 0; i != AUE_TIMEOUT; i++) {
if (aue_csr_read_1(sc, AUE_PHY_CTL) & AUE_PHYCTL_DONE)
break;
if (uether_pause(&sc->sc_ue, hz / 100))
break;
}
if (i == AUE_TIMEOUT)
device_printf(sc->sc_ue.ue_dev, "MII write timed out\n");
if (!locked)
AUE_UNLOCK(sc);
return (0);
}
static void
aue_miibus_statchg(device_t dev)
{
struct aue_softc *sc = device_get_softc(dev);
struct mii_data *mii = GET_MII(sc);
int locked;
locked = mtx_owned(&sc->sc_mtx);
if (!locked)
AUE_LOCK(sc);
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);
/*
* Set the LED modes on the LinkSys adapter.
* This turns on the 'dual link LED' bin in the auxmode
* register of the Broadcom PHY.
*/
if (sc->sc_flags & AUE_FLAG_LSYS) {
uint16_t auxmode;
auxmode = aue_miibus_readreg(dev, 0, 0x1b);
aue_miibus_writereg(dev, 0, 0x1b, auxmode | 0x04);
}
if (!locked)
AUE_UNLOCK(sc);
}
#define AUE_BITS 6
static void
aue_setmulti(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
struct ifmultiaddr *ifma;
uint32_t h = 0;
uint32_t i;
uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
AUE_LOCK_ASSERT(sc, MA_OWNED);
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);
/* now program new ones */
if_maddr_rlock(ifp);
CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = ether_crc32_le(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN) & ((1 << AUE_BITS) - 1);
hashtbl[(h >> 3)] |= 1 << (h & 0x7);
}
if_maddr_runlock(ifp);
/* write the hashtable */
for (i = 0; i != 8; i++)
aue_csr_write_1(sc, AUE_MAR0 + i, hashtbl[i]);
}
static void
aue_reset_pegasus_II(struct aue_softc *sc)
{
/* Magic constants taken from Linux driver. */
aue_csr_write_1(sc, AUE_REG_1D, 0);
aue_csr_write_1(sc, AUE_REG_7B, 2);
#if 0
if ((sc->sc_flags & HAS_HOME_PNA) && mii_mode)
aue_csr_write_1(sc, AUE_REG_81, 6);
else
#endif
aue_csr_write_1(sc, AUE_REG_81, 2);
}
static void
aue_reset(struct aue_softc *sc)
{
int i;
AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_RESETMAC);
for (i = 0; i != AUE_TIMEOUT; i++) {
if (!(aue_csr_read_1(sc, AUE_CTL1) & AUE_CTL1_RESETMAC))
break;
if (uether_pause(&sc->sc_ue, hz / 100))
break;
}
if (i == AUE_TIMEOUT)
device_printf(sc->sc_ue.ue_dev, "reset failed\n");
/*
* 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.
*
* NOTE: We used to force all of the GPIO pins low first and then
* enable the ones we want. This has been changed to better
* match the ADMtek's reference design to avoid setting the
* power-down configuration line of the PHY at the same time
* it is reset.
*/
aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_SEL0|AUE_GPIO_SEL1);
aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_SEL0|AUE_GPIO_SEL1|AUE_GPIO_OUT0);
if (sc->sc_flags & AUE_FLAG_LSYS) {
/* Grrr. LinkSys has to be different from everyone else. */
aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_SEL0|AUE_GPIO_SEL1);
aue_csr_write_1(sc, AUE_GPIO0,
AUE_GPIO_SEL0|AUE_GPIO_SEL1|AUE_GPIO_OUT0);
}
if (sc->sc_flags & AUE_FLAG_PII)
aue_reset_pegasus_II(sc);
/* Wait a little while for the chip to get its brains in order: */
uether_pause(&sc->sc_ue, hz / 100);
}
static void
aue_attach_post(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
/* reset the adapter */
aue_reset(sc);
/* get station address from the EEPROM */
aue_read_mac(sc, ue->ue_eaddr);
}
/*
* Probe for a Pegasus chip.
*/
static int
aue_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 != AUE_CONFIG_INDEX)
return (ENXIO);
if (uaa->info.bIfaceIndex != AUE_IFACE_IDX)
return (ENXIO);
/*
* Belkin USB Bluetooth dongles of the F8T012xx1 model series conflict
* with older Belkin USB2LAN adapters. Skip if_aue if we detect one of
* the devices that look like Bluetooth adapters.
*/
if (uaa->info.idVendor == USB_VENDOR_BELKIN &&
uaa->info.idProduct == USB_PRODUCT_BELKIN_F8T012 &&
uaa->info.bcdDevice == 0x0413)
return (ENXIO);
return (usbd_lookup_id_by_uaa(aue_devs, sizeof(aue_devs), uaa));
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int
aue_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct aue_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);
if (uaa->info.bcdDevice >= 0x0201) {
/* XXX currently undocumented */
sc->sc_flags |= AUE_FLAG_VER_2;
}
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
iface_index = AUE_IFACE_IDX;
error = usbd_transfer_setup(uaa->device, &iface_index,
sc->sc_xfer, aue_config, AUE_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 = &aue_ue_methods;
error = uether_ifattach(ue);
if (error) {
device_printf(dev, "could not attach interface\n");
goto detach;
}
return (0); /* success */
detach:
aue_detach(dev);
return (ENXIO); /* failure */
}
static int
aue_detach(device_t dev)
{
struct aue_softc *sc = device_get_softc(dev);
struct usb_ether *ue = &sc->sc_ue;
usbd_transfer_unsetup(sc->sc_xfer, AUE_N_TRANSFER);
uether_ifdetach(ue);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
aue_intr_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct aue_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
struct aue_intrpkt pkt;
struct usb_page_cache *pc;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) &&
actlen >= (int)sizeof(pkt)) {
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
if (pkt.aue_txstat0)
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
if (pkt.aue_txstat0 & (AUE_TXSTAT0_LATECOLL |
AUE_TXSTAT0_EXCESSCOLL))
if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
}
/* FALLTHROUGH */
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
aue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct aue_softc *sc = usbd_xfer_softc(xfer);
struct usb_ether *ue = &sc->sc_ue;
struct ifnet *ifp = uether_getifp(ue);
struct aue_rxpkt stat;
struct usb_page_cache *pc;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
pc = usbd_xfer_get_frame(xfer, 0);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTFN(11, "received %d bytes\n", actlen);
if (sc->sc_flags & AUE_FLAG_VER_2) {
if (actlen == 0) {
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
goto tr_setup;
}
} else {
if (actlen <= (int)(sizeof(stat) + ETHER_CRC_LEN)) {
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
goto tr_setup;
}
usbd_copy_out(pc, actlen - sizeof(stat), &stat,
sizeof(stat));
/*
* turn off all the non-error bits in the rx status
* word:
*/
stat.aue_rxstat &= AUE_RXSTAT_MASK;
if (stat.aue_rxstat) {
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
goto tr_setup;
}
/* No errors; receive the packet. */
actlen -= (sizeof(stat) + ETHER_CRC_LEN);
}
uether_rxbuf(ue, pc, 0, actlen);
/* 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
aue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct aue_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
struct usb_page_cache *pc;
struct mbuf *m;
uint8_t buf[2];
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
pc = usbd_xfer_get_frame(xfer, 0);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTFN(11, "transfer of %d bytes complete\n", actlen);
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
if ((sc->sc_flags & AUE_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 (sc->sc_flags & AUE_FLAG_VER_2) {
usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
} else {
usbd_xfer_set_frame_len(xfer, 0, (m->m_pkthdr.len + 2));
/*
* 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.
*/
buf[0] = (uint8_t)(m->m_pkthdr.len);
buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
usbd_copy_in(pc, 0, buf, 2);
usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
}
/*
* if there's a BPF listener, bounce a copy
* of this frame to him:
*/
BPF_MTAP(ifp, m);
m_freem(m);
usbd_transfer_submit(xfer);
return;
default: /* Error */
DPRINTFN(11, "transfer error, %s\n",
usbd_errstr(error));
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
aue_tick(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
struct mii_data *mii = GET_MII(sc);
AUE_LOCK_ASSERT(sc, MA_OWNED);
mii_tick(mii);
if ((sc->sc_flags & AUE_FLAG_LINK) == 0
&& mii->mii_media_status & IFM_ACTIVE &&
IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
sc->sc_flags |= AUE_FLAG_LINK;
aue_start(ue);
}
}
static void
aue_start(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
/*
* start the USB transfers, if not already started:
*/
usbd_transfer_start(sc->sc_xfer[AUE_INTR_DT_RD]);
usbd_transfer_start(sc->sc_xfer[AUE_BULK_DT_RD]);
usbd_transfer_start(sc->sc_xfer[AUE_BULK_DT_WR]);
}
static void
aue_init(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
int i;
AUE_LOCK_ASSERT(sc, MA_OWNED);
/*
* Cancel pending I/O
*/
aue_reset(sc);
/* Set MAC address */
for (i = 0; i != ETHER_ADDR_LEN; i++)
aue_csr_write_1(sc, AUE_PAR0 + i, IF_LLADDR(ifp)[i]);
/* update promiscuous setting */
aue_setpromisc(ue);
/* Load the multicast filter. */
aue_setmulti(ue);
/* Enable RX and TX */
aue_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);
usbd_xfer_set_stall(sc->sc_xfer[AUE_BULK_DT_WR]);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
aue_start(ue);
}
static void
aue_setpromisc(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
AUE_LOCK_ASSERT(sc, MA_OWNED);
/* 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);
}
/*
* Set media options.
*/
static int
aue_ifmedia_upd(struct ifnet *ifp)
{
struct aue_softc *sc = ifp->if_softc;
struct mii_data *mii = GET_MII(sc);
struct mii_softc *miisc;
int error;
AUE_LOCK_ASSERT(sc, MA_OWNED);
sc->sc_flags &= ~AUE_FLAG_LINK;
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
PHY_RESET(miisc);
error = mii_mediachg(mii);
return (error);
}
/*
* Report current media status.
*/
static void
aue_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct aue_softc *sc = ifp->if_softc;
struct mii_data *mii = GET_MII(sc);
AUE_LOCK(sc);
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
AUE_UNLOCK(sc);
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
aue_stop(struct usb_ether *ue)
{
struct aue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
AUE_LOCK_ASSERT(sc, MA_OWNED);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
sc->sc_flags &= ~AUE_FLAG_LINK;
/*
* stop all the transfers, if not already stopped:
*/
usbd_transfer_stop(sc->sc_xfer[AUE_BULK_DT_WR]);
usbd_transfer_stop(sc->sc_xfer[AUE_BULK_DT_RD]);
usbd_transfer_stop(sc->sc_xfer[AUE_INTR_DT_RD]);
aue_csr_write_1(sc, AUE_CTL0, 0);
aue_csr_write_1(sc, AUE_CTL1, 0);
aue_reset(sc);
}
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