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freebsd-nq/sys/dev/dc/if_dc.c
Gleb Smirnoff 4092996774 Big polling(4) cleanup. 
o Axe poll in trap.

o Axe IFF_POLLING flag from if_flags.

o Rework revision 1.21 (Giant removal), in such a way that
  poll_mtx is not dropped during call to polling handler.
  This fixes problem with idle polling.

o Make registration and deregistration from polling in a
  functional way, insted of next tick/interrupt.

o Obsolete kern.polling.enable. Polling is turned on/off
  with ifconfig.

Detailed kern_poll.c changes:
  - Remove polling handler flags, introduced in 1.21. The are not
    needed now.
  - Forget and do not check if_flags, if_capenable and if_drv_flags.
  - Call all registered polling handlers unconditionally.
  - Do not drop poll_mtx, when entering polling handlers.
  - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx.
  - In netisr_poll() axe the block, where polling code asks drivers
    to unregister.
  - In netisr_poll() and ether_poll() do polling always, if any
    handlers are present.
  - In ether_poll_[de]register() remove a lot of error hiding code. Assert
    that arguments are correct, instead.
  - In ether_poll_[de]register() use standard return values in case of
    error or success.
  - Introduce poll_switch() that is a sysctl handler for kern.polling.enable.
    poll_switch() goes through interface list and enabled/disables polling.
    A message that kern.polling.enable is deprecated is printed.

Detailed driver changes:
  - On attach driver announces IFCAP_POLLING in if_capabilities, but
    not in if_capenable.
  - On detach driver calls ether_poll_deregister() if polling is enabled.
  - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING
    flag. If there is no, then unlocks and returns.
  - In ioctl handler driver checks for IFCAP_POLLING flag requested to
    be set or cleared. Driver first calls ether_poll_[de]register(), then
    obtains driver lock and [dis/en]ables interrupts.
  - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable.
    If present, then returns.This is important to protect from spurious
    interrupts.

Reviewed by:	ru, sam, jhb
2005-10-01 18:56:19 +00:00

3859 lines
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/*-
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143
* series chips and several workalikes including the following:
*
* Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com)
* Macronix/Lite-On 82c115 PNIC II (www.macronix.com)
* Lite-On 82c168/82c169 PNIC (www.litecom.com)
* ASIX Electronics AX88140A (www.asix.com.tw)
* ASIX Electronics AX88141 (www.asix.com.tw)
* ADMtek AL981 (www.admtek.com.tw)
* ADMtek AN985 (www.admtek.com.tw)
* Netgear FA511 (www.netgear.com) Appears to be rebadged ADMTek AN985
* Davicom DM9100, DM9102, DM9102A (www.davicom8.com)
* Accton EN1217 (www.accton.com)
* Xircom X3201 (www.xircom.com)
* Abocom FE2500
* Conexant LANfinity (www.conexant.com)
* 3Com OfficeConnect 10/100B 3CSOHO100B (www.3com.com)
*
* Datasheets for the 21143 are available at developer.intel.com.
* Datasheets for the clone parts can be found at their respective sites.
* (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.)
* The PNIC II is essentially a Macronix 98715A chip; the only difference
* worth noting is that its multicast hash table is only 128 bits wide
* instead of 512.
*
* Written by Bill Paul <wpaul@ee.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* The Intel 21143 is the successor to the DEC 21140. It is basically
* the same as the 21140 but with a few new features. The 21143 supports
* three kinds of media attachments:
*
* o MII port, for 10Mbps and 100Mbps support and NWAY
* autonegotiation provided by an external PHY.
* o SYM port, for symbol mode 100Mbps support.
* o 10baseT port.
* o AUI/BNC port.
*
* The 100Mbps SYM port and 10baseT port can be used together in
* combination with the internal NWAY support to create a 10/100
* autosensing configuration.
*
* Note that not all tulip workalikes are handled in this driver: we only
* deal with those which are relatively well behaved. The Winbond is
* handled separately due to its different register offsets and the
* special handling needed for its various bugs. The PNIC is handled
* here, but I'm not thrilled about it.
*
* All of the workalike chips use some form of MII transceiver support
* with the exception of the Macronix chips, which also have a SYM port.
* The ASIX AX88140A is also documented to have a SYM port, but all
* the cards I've seen use an MII transceiver, probably because the
* AX88140A doesn't support internal NWAY.
*/
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/sysctl.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/if_types.h>
#include <net/if_vlan_var.h>
#include <net/bpf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#define DC_USEIOSPACE
#ifdef __alpha__
#define SRM_MEDIA
#endif
#include <pci/if_dcreg.h>
#ifdef __sparc64__
#include <dev/ofw/openfirm.h>
#include <machine/ofw_machdep.h>
#endif
MODULE_DEPEND(dc, pci, 1, 1, 1);
MODULE_DEPEND(dc, ether, 1, 1, 1);
MODULE_DEPEND(dc, miibus, 1, 1, 1);
/*
* "device miibus" is required in kernel config. See GENERIC if you get
* errors here.
*/
#include "miibus_if.h"
/*
* Various supported device vendors/types and their names.
*/
static struct dc_type dc_devs[] = {
{ DC_VENDORID_DEC, DC_DEVICEID_21143,
"Intel 21143 10/100BaseTX" },
{ DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009,
"Davicom DM9009 10/100BaseTX" },
{ DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100,
"Davicom DM9100 10/100BaseTX" },
{ DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102,
"Davicom DM9102 10/100BaseTX" },
{ DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102,
"Davicom DM9102A 10/100BaseTX" },
{ DC_VENDORID_ADMTEK, DC_DEVICEID_AL981,
"ADMtek AL981 10/100BaseTX" },
{ DC_VENDORID_ADMTEK, DC_DEVICEID_AN985,
"ADMtek AN985 10/100BaseTX" },
{ DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9511,
"ADMtek ADM9511 10/100BaseTX" },
{ DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9513,
"ADMtek ADM9513 10/100BaseTX" },
{ DC_VENDORID_ADMTEK, DC_DEVICEID_FA511,
"Netgear FA511 10/100BaseTX" },
{ DC_VENDORID_ASIX, DC_DEVICEID_AX88140A,
"ASIX AX88140A 10/100BaseTX" },
{ DC_VENDORID_ASIX, DC_DEVICEID_AX88140A,
"ASIX AX88141 10/100BaseTX" },
{ DC_VENDORID_MX, DC_DEVICEID_98713,
"Macronix 98713 10/100BaseTX" },
{ DC_VENDORID_MX, DC_DEVICEID_98713,
"Macronix 98713A 10/100BaseTX" },
{ DC_VENDORID_CP, DC_DEVICEID_98713_CP,
"Compex RL100-TX 10/100BaseTX" },
{ DC_VENDORID_CP, DC_DEVICEID_98713_CP,
"Compex RL100-TX 10/100BaseTX" },
{ DC_VENDORID_MX, DC_DEVICEID_987x5,
"Macronix 98715/98715A 10/100BaseTX" },
{ DC_VENDORID_MX, DC_DEVICEID_987x5,
"Macronix 98715AEC-C 10/100BaseTX" },
{ DC_VENDORID_MX, DC_DEVICEID_987x5,
"Macronix 98725 10/100BaseTX" },
{ DC_VENDORID_MX, DC_DEVICEID_98727,
"Macronix 98727/98732 10/100BaseTX" },
{ DC_VENDORID_LO, DC_DEVICEID_82C115,
"LC82C115 PNIC II 10/100BaseTX" },
{ DC_VENDORID_LO, DC_DEVICEID_82C168,
"82c168 PNIC 10/100BaseTX" },
{ DC_VENDORID_LO, DC_DEVICEID_82C168,
"82c169 PNIC 10/100BaseTX" },
{ DC_VENDORID_ACCTON, DC_DEVICEID_EN1217,
"Accton EN1217 10/100BaseTX" },
{ DC_VENDORID_ACCTON, DC_DEVICEID_EN2242,
"Accton EN2242 MiniPCI 10/100BaseTX" },
{ DC_VENDORID_XIRCOM, DC_DEVICEID_X3201,
"Xircom X3201 10/100BaseTX" },
{ DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500,
"Abocom FE2500 10/100BaseTX" },
{ DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500MX,
"Abocom FE2500MX 10/100BaseTX" },
{ DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112,
"Conexant LANfinity MiniPCI 10/100BaseTX" },
{ DC_VENDORID_HAWKING, DC_DEVICEID_HAWKING_PN672TX,
"Hawking CB102 CardBus 10/100" },
{ DC_VENDORID_PLANEX, DC_DEVICEID_FNW3602T,
"PlaneX FNW-3602-T CardBus 10/100" },
{ DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB,
"3Com OfficeConnect 10/100B" },
{ DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN120,
"Microsoft MN-120 CardBus 10/100" },
{ DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130,
"Microsoft MN-130 10/100" },
{ DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130_FAKE,
"Microsoft MN-130 10/100" },
{ 0, 0, NULL }
};
static int dc_probe(device_t);
static int dc_attach(device_t);
static int dc_detach(device_t);
static int dc_suspend(device_t);
static int dc_resume(device_t);
static struct dc_type *dc_devtype(device_t);
static int dc_newbuf(struct dc_softc *, int, int);
static int dc_encap(struct dc_softc *, struct mbuf **);
static void dc_pnic_rx_bug_war(struct dc_softc *, int);
static int dc_rx_resync(struct dc_softc *);
static void dc_rxeof(struct dc_softc *);
static void dc_txeof(struct dc_softc *);
static void dc_tick(void *);
static void dc_tx_underrun(struct dc_softc *);
static void dc_intr(void *);
static void dc_start(struct ifnet *);
static void dc_start_locked(struct ifnet *);
static int dc_ioctl(struct ifnet *, u_long, caddr_t);
static void dc_init(void *);
static void dc_init_locked(struct dc_softc *);
static void dc_stop(struct dc_softc *);
static void dc_watchdog(struct ifnet *);
static void dc_shutdown(device_t);
static int dc_ifmedia_upd(struct ifnet *);
static void dc_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static void dc_delay(struct dc_softc *);
static void dc_eeprom_idle(struct dc_softc *);
static void dc_eeprom_putbyte(struct dc_softc *, int);
static void dc_eeprom_getword(struct dc_softc *, int, u_int16_t *);
static void dc_eeprom_getword_pnic(struct dc_softc *, int, u_int16_t *);
static void dc_eeprom_getword_xircom(struct dc_softc *, int, u_int16_t *);
static void dc_eeprom_width(struct dc_softc *);
static void dc_read_eeprom(struct dc_softc *, caddr_t, int, int, int);
static void dc_mii_writebit(struct dc_softc *, int);
static int dc_mii_readbit(struct dc_softc *);
static void dc_mii_sync(struct dc_softc *);
static void dc_mii_send(struct dc_softc *, u_int32_t, int);
static int dc_mii_readreg(struct dc_softc *, struct dc_mii_frame *);
static int dc_mii_writereg(struct dc_softc *, struct dc_mii_frame *);
static int dc_miibus_readreg(device_t, int, int);
static int dc_miibus_writereg(device_t, int, int, int);
static void dc_miibus_statchg(device_t);
static void dc_miibus_mediainit(device_t);
static void dc_setcfg(struct dc_softc *, int);
static uint32_t dc_mchash_le(struct dc_softc *, const uint8_t *);
static uint32_t dc_mchash_be(const uint8_t *);
static void dc_setfilt_21143(struct dc_softc *);
static void dc_setfilt_asix(struct dc_softc *);
static void dc_setfilt_admtek(struct dc_softc *);
static void dc_setfilt_xircom(struct dc_softc *);
static void dc_setfilt(struct dc_softc *);
static void dc_reset(struct dc_softc *);
static int dc_list_rx_init(struct dc_softc *);
static int dc_list_tx_init(struct dc_softc *);
static void dc_read_srom(struct dc_softc *, int);
static void dc_parse_21143_srom(struct dc_softc *);
static void dc_decode_leaf_sia(struct dc_softc *, struct dc_eblock_sia *);
static void dc_decode_leaf_mii(struct dc_softc *, struct dc_eblock_mii *);
static void dc_decode_leaf_sym(struct dc_softc *, struct dc_eblock_sym *);
static void dc_apply_fixup(struct dc_softc *, int);
static void dc_dma_map_txbuf(void *, bus_dma_segment_t *, int, bus_size_t, int);
static void dc_dma_map_rxbuf(void *, bus_dma_segment_t *, int, bus_size_t, int);
#ifdef DC_USEIOSPACE
#define DC_RES SYS_RES_IOPORT
#define DC_RID DC_PCI_CFBIO
#else
#define DC_RES SYS_RES_MEMORY
#define DC_RID DC_PCI_CFBMA
#endif
static device_method_t dc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dc_probe),
DEVMETHOD(device_attach, dc_attach),
DEVMETHOD(device_detach, dc_detach),
DEVMETHOD(device_suspend, dc_suspend),
DEVMETHOD(device_resume, dc_resume),
DEVMETHOD(device_shutdown, dc_shutdown),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, dc_miibus_readreg),
DEVMETHOD(miibus_writereg, dc_miibus_writereg),
DEVMETHOD(miibus_statchg, dc_miibus_statchg),
DEVMETHOD(miibus_mediainit, dc_miibus_mediainit),
{ 0, 0 }
};
static driver_t dc_driver = {
"dc",
dc_methods,
sizeof(struct dc_softc)
};
static devclass_t dc_devclass;
#ifdef __i386__
static int dc_quick = 1;
SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW, &dc_quick, 0,
"do not m_devget() in dc driver");
#endif
DRIVER_MODULE(dc, cardbus, dc_driver, dc_devclass, 0, 0);
DRIVER_MODULE(dc, pci, dc_driver, dc_devclass, 0, 0);
DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0);
#define DC_SETBIT(sc, reg, x) \
CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
#define DC_CLRBIT(sc, reg, x) \
CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
#define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x))
#define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x))
static void
dc_delay(struct dc_softc *sc)
{
int idx;
for (idx = (300 / 33) + 1; idx > 0; idx--)
CSR_READ_4(sc, DC_BUSCTL);
}
static void
dc_eeprom_width(struct dc_softc *sc)
{
int i;
/* Force EEPROM to idle state. */
dc_eeprom_idle(sc);
/* Enter EEPROM access mode. */
CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
dc_delay(sc);
for (i = 3; i--;) {
if (6 & (1 << i))
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
else
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
}
for (i = 1; i <= 12; i++) {
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) {
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
break;
}
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
}
/* Turn off EEPROM access mode. */
dc_eeprom_idle(sc);
if (i < 4 || i > 12)
sc->dc_romwidth = 6;
else
sc->dc_romwidth = i;
/* Enter EEPROM access mode. */
CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
dc_delay(sc);
/* Turn off EEPROM access mode. */
dc_eeprom_idle(sc);
}
static void
dc_eeprom_idle(struct dc_softc *sc)
{
int i;
CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
dc_delay(sc);
for (i = 0; i < 25; i++) {
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
}
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS);
dc_delay(sc);
CSR_WRITE_4(sc, DC_SIO, 0x00000000);
}
/*
* Send a read command and address to the EEPROM, check for ACK.
*/
static void
dc_eeprom_putbyte(struct dc_softc *sc, int addr)
{
int d, i;
d = DC_EECMD_READ >> 6;
for (i = 3; i--; ) {
if (d & (1 << i))
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
else
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
}
/*
* Feed in each bit and strobe the clock.
*/
for (i = sc->dc_romwidth; i--;) {
if (addr & (1 << i)) {
SIO_SET(DC_SIO_EE_DATAIN);
} else {
SIO_CLR(DC_SIO_EE_DATAIN);
}
dc_delay(sc);
SIO_SET(DC_SIO_EE_CLK);
dc_delay(sc);
SIO_CLR(DC_SIO_EE_CLK);
dc_delay(sc);
}
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
* The PNIC 82c168/82c169 has its own non-standard way to read
* the EEPROM.
*/
static void
dc_eeprom_getword_pnic(struct dc_softc *sc, int addr, u_int16_t *dest)
{
int i;
u_int32_t r;
CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ | addr);
for (i = 0; i < DC_TIMEOUT; i++) {
DELAY(1);
r = CSR_READ_4(sc, DC_SIO);
if (!(r & DC_PN_SIOCTL_BUSY)) {
*dest = (u_int16_t)(r & 0xFFFF);
return;
}
}
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
* The Xircom X3201 has its own non-standard way to read
* the EEPROM, too.
*/
static void
dc_eeprom_getword_xircom(struct dc_softc *sc, int addr, u_int16_t *dest)
{
SIO_SET(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ);
addr *= 2;
CSR_WRITE_4(sc, DC_ROM, addr | 0x160);
*dest = (u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff;
addr += 1;
CSR_WRITE_4(sc, DC_ROM, addr | 0x160);
*dest |= ((u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff) << 8;
SIO_CLR(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ);
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
*/
static void
dc_eeprom_getword(struct dc_softc *sc, int addr, u_int16_t *dest)
{
int i;
u_int16_t word = 0;
/* Force EEPROM to idle state. */
dc_eeprom_idle(sc);
/* Enter EEPROM access mode. */
CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ);
dc_delay(sc);
DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK);
dc_delay(sc);
DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS);
dc_delay(sc);
/*
* Send address of word we want to read.
*/
dc_eeprom_putbyte(sc, addr);
/*
* Start reading bits from EEPROM.
*/
for (i = 0x8000; i; i >>= 1) {
SIO_SET(DC_SIO_EE_CLK);
dc_delay(sc);
if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)
word |= i;
dc_delay(sc);
SIO_CLR(DC_SIO_EE_CLK);
dc_delay(sc);
}
/* Turn off EEPROM access mode. */
dc_eeprom_idle(sc);
*dest = word;
}
/*
* Read a sequence of words from the EEPROM.
*/
static void
dc_read_eeprom(struct dc_softc *sc, caddr_t dest, int off, int cnt, int be)
{
int i;
u_int16_t word = 0, *ptr;
for (i = 0; i < cnt; i++) {
if (DC_IS_PNIC(sc))
dc_eeprom_getword_pnic(sc, off + i, &word);
else if (DC_IS_XIRCOM(sc))
dc_eeprom_getword_xircom(sc, off + i, &word);
else
dc_eeprom_getword(sc, off + i, &word);
ptr = (u_int16_t *)(dest + (i * 2));
if (be)
*ptr = be16toh(word);
else
*ptr = le16toh(word);
}
}
/*
* The following two routines are taken from the Macronix 98713
* Application Notes pp.19-21.
*/
/*
* Write a bit to the MII bus.
*/
static void
dc_mii_writebit(struct dc_softc *sc, int bit)
{
if (bit)
CSR_WRITE_4(sc, DC_SIO,
DC_SIO_ROMCTL_WRITE | DC_SIO_MII_DATAOUT);
else
CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE);
DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK);
DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK);
}
/*
* Read a bit from the MII bus.
*/
static int
dc_mii_readbit(struct dc_softc *sc)
{
CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ | DC_SIO_MII_DIR);
CSR_READ_4(sc, DC_SIO);
DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK);
DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK);
if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN)
return (1);
return (0);
}
/*
* Sync the PHYs by setting data bit and strobing the clock 32 times.
*/
static void
dc_mii_sync(struct dc_softc *sc)
{
int i;
CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE);
for (i = 0; i < 32; i++)
dc_mii_writebit(sc, 1);
}
/*
* Clock a series of bits through the MII.
*/
static void
dc_mii_send(struct dc_softc *sc, u_int32_t bits, int cnt)
{
int i;
for (i = (0x1 << (cnt - 1)); i; i >>= 1)
dc_mii_writebit(sc, bits & i);
}
/*
* Read an PHY register through the MII.
*/
static int
dc_mii_readreg(struct dc_softc *sc, struct dc_mii_frame *frame)
{
int i, ack;
/*
* Set up frame for RX.
*/
frame->mii_stdelim = DC_MII_STARTDELIM;
frame->mii_opcode = DC_MII_READOP;
frame->mii_turnaround = 0;
frame->mii_data = 0;
/*
* Sync the PHYs.
*/
dc_mii_sync(sc);
/*
* Send command/address info.
*/
dc_mii_send(sc, frame->mii_stdelim, 2);
dc_mii_send(sc, frame->mii_opcode, 2);
dc_mii_send(sc, frame->mii_phyaddr, 5);
dc_mii_send(sc, frame->mii_regaddr, 5);
#ifdef notdef
/* Idle bit */
dc_mii_writebit(sc, 1);
dc_mii_writebit(sc, 0);
#endif
/* Check for ack. */
ack = dc_mii_readbit(sc);
/*
* Now try reading data bits. If the ack failed, we still
* need to clock through 16 cycles to keep the PHY(s) in sync.
*/
if (ack) {
for (i = 0; i < 16; i++)
dc_mii_readbit(sc);
goto fail;
}
for (i = 0x8000; i; i >>= 1) {
if (!ack) {
if (dc_mii_readbit(sc))
frame->mii_data |= i;
}
}
fail:
dc_mii_writebit(sc, 0);
dc_mii_writebit(sc, 0);
if (ack)
return (1);
return (0);
}
/*
* Write to a PHY register through the MII.
*/
static int
dc_mii_writereg(struct dc_softc *sc, struct dc_mii_frame *frame)
{
/*
* Set up frame for TX.
*/
frame->mii_stdelim = DC_MII_STARTDELIM;
frame->mii_opcode = DC_MII_WRITEOP;
frame->mii_turnaround = DC_MII_TURNAROUND;
/*
* Sync the PHYs.
*/
dc_mii_sync(sc);
dc_mii_send(sc, frame->mii_stdelim, 2);
dc_mii_send(sc, frame->mii_opcode, 2);
dc_mii_send(sc, frame->mii_phyaddr, 5);
dc_mii_send(sc, frame->mii_regaddr, 5);
dc_mii_send(sc, frame->mii_turnaround, 2);
dc_mii_send(sc, frame->mii_data, 16);
/* Idle bit. */
dc_mii_writebit(sc, 0);
dc_mii_writebit(sc, 0);
return (0);
}
static int
dc_miibus_readreg(device_t dev, int phy, int reg)
{
struct dc_mii_frame frame;
struct dc_softc *sc;
int i, rval, phy_reg = 0;
sc = device_get_softc(dev);
bzero(&frame, sizeof(frame));
/*
* Note: both the AL981 and AN985 have internal PHYs,
* however the AL981 provides direct access to the PHY
* registers while the AN985 uses a serial MII interface.
* The AN985's MII interface is also buggy in that you
* can read from any MII address (0 to 31), but only address 1
* behaves normally. To deal with both cases, we pretend
* that the PHY is at MII address 1.
*/
if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR)
return (0);
/*
* Note: the ukphy probes of the RS7112 report a PHY at
* MII address 0 (possibly HomePNA?) and 1 (ethernet)
* so we only respond to correct one.
*/
if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR)
return (0);
if (sc->dc_pmode != DC_PMODE_MII) {
if (phy == (MII_NPHY - 1)) {
switch (reg) {
case MII_BMSR:
/*
* Fake something to make the probe
* code think there's a PHY here.
*/
return (BMSR_MEDIAMASK);
break;
case MII_PHYIDR1:
if (DC_IS_PNIC(sc))
return (DC_VENDORID_LO);
return (DC_VENDORID_DEC);
break;
case MII_PHYIDR2:
if (DC_IS_PNIC(sc))
return (DC_DEVICEID_82C168);
return (DC_DEVICEID_21143);
break;
default:
return (0);
break;
}
} else
return (0);
}
if (DC_IS_PNIC(sc)) {
CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ |
(phy << 23) | (reg << 18));
for (i = 0; i < DC_TIMEOUT; i++) {
DELAY(1);
rval = CSR_READ_4(sc, DC_PN_MII);
if (!(rval & DC_PN_MII_BUSY)) {
rval &= 0xFFFF;
return (rval == 0xFFFF ? 0 : rval);
}
}
return (0);
}
if (DC_IS_COMET(sc)) {
switch (reg) {
case MII_BMCR:
phy_reg = DC_AL_BMCR;
break;
case MII_BMSR:
phy_reg = DC_AL_BMSR;
break;
case MII_PHYIDR1:
phy_reg = DC_AL_VENID;
break;
case MII_PHYIDR2:
phy_reg = DC_AL_DEVID;
break;
case MII_ANAR:
phy_reg = DC_AL_ANAR;
break;
case MII_ANLPAR:
phy_reg = DC_AL_LPAR;
break;
case MII_ANER:
phy_reg = DC_AL_ANER;
break;
default:
device_printf(dev, "phy_read: bad phy register %x\n",
reg);
return (0);
break;
}
rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF;
if (rval == 0xFFFF)
return (0);
return (rval);
}
frame.mii_phyaddr = phy;
frame.mii_regaddr = reg;
if (sc->dc_type == DC_TYPE_98713) {
phy_reg = CSR_READ_4(sc, DC_NETCFG);
CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL);
}
dc_mii_readreg(sc, &frame);
if (sc->dc_type == DC_TYPE_98713)
CSR_WRITE_4(sc, DC_NETCFG, phy_reg);
return (frame.mii_data);
}
static int
dc_miibus_writereg(device_t dev, int phy, int reg, int data)
{
struct dc_softc *sc;
struct dc_mii_frame frame;
int i, phy_reg = 0;
sc = device_get_softc(dev);
bzero(&frame, sizeof(frame));
if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR)
return (0);
if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR)
return (0);
if (DC_IS_PNIC(sc)) {
CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE |
(phy << 23) | (reg << 10) | data);
for (i = 0; i < DC_TIMEOUT; i++) {
if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY))
break;
}
return (0);
}
if (DC_IS_COMET(sc)) {
switch (reg) {
case MII_BMCR:
phy_reg = DC_AL_BMCR;
break;
case MII_BMSR:
phy_reg = DC_AL_BMSR;
break;
case MII_PHYIDR1:
phy_reg = DC_AL_VENID;
break;
case MII_PHYIDR2:
phy_reg = DC_AL_DEVID;
break;
case MII_ANAR:
phy_reg = DC_AL_ANAR;
break;
case MII_ANLPAR:
phy_reg = DC_AL_LPAR;
break;
case MII_ANER:
phy_reg = DC_AL_ANER;
break;
default:
device_printf(dev, "phy_write: bad phy register %x\n",
reg);
return (0);
break;
}
CSR_WRITE_4(sc, phy_reg, data);
return (0);
}
frame.mii_phyaddr = phy;
frame.mii_regaddr = reg;
frame.mii_data = data;
if (sc->dc_type == DC_TYPE_98713) {
phy_reg = CSR_READ_4(sc, DC_NETCFG);
CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL);
}
dc_mii_writereg(sc, &frame);
if (sc->dc_type == DC_TYPE_98713)
CSR_WRITE_4(sc, DC_NETCFG, phy_reg);
return (0);
}
static void
dc_miibus_statchg(device_t dev)
{
struct dc_softc *sc;
struct mii_data *mii;
struct ifmedia *ifm;
sc = device_get_softc(dev);
if (DC_IS_ADMTEK(sc))
return;
mii = device_get_softc(sc->dc_miibus);
ifm = &mii->mii_media;
if (DC_IS_DAVICOM(sc) &&
IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) {
dc_setcfg(sc, ifm->ifm_media);
sc->dc_if_media = ifm->ifm_media;
} else {
dc_setcfg(sc, mii->mii_media_active);
sc->dc_if_media = mii->mii_media_active;
}
}
/*
* Special support for DM9102A cards with HomePNA PHYs. Note:
* with the Davicom DM9102A/DM9801 eval board that I have, it seems
* to be impossible to talk to the management interface of the DM9801
* PHY (its MDIO pin is not connected to anything). Consequently,
* the driver has to just 'know' about the additional mode and deal
* with it itself. *sigh*
*/
static void
dc_miibus_mediainit(device_t dev)
{
struct dc_softc *sc;
struct mii_data *mii;
struct ifmedia *ifm;
int rev;
rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF;
sc = device_get_softc(dev);
mii = device_get_softc(sc->dc_miibus);
ifm = &mii->mii_media;
if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A)
ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL);
}
#define DC_BITS_512 9
#define DC_BITS_128 7
#define DC_BITS_64 6
static uint32_t
dc_mchash_le(struct dc_softc *sc, const uint8_t *addr)
{
uint32_t crc;
/* Compute CRC for the address value. */
crc = ether_crc32_le(addr, ETHER_ADDR_LEN);
/*
* The hash table on the PNIC II and the MX98715AEC-C/D/E
* chips is only 128 bits wide.
*/
if (sc->dc_flags & DC_128BIT_HASH)
return (crc & ((1 << DC_BITS_128) - 1));
/* The hash table on the MX98715BEC is only 64 bits wide. */
if (sc->dc_flags & DC_64BIT_HASH)
return (crc & ((1 << DC_BITS_64) - 1));
/* Xircom's hash filtering table is different (read: weird) */
/* Xircom uses the LEAST significant bits */
if (DC_IS_XIRCOM(sc)) {
if ((crc & 0x180) == 0x180)
return ((crc & 0x0F) + (crc & 0x70) * 3 + (14 << 4));
else
return ((crc & 0x1F) + ((crc >> 1) & 0xF0) * 3 +
(12 << 4));
}
return (crc & ((1 << DC_BITS_512) - 1));
}
/*
* Calculate CRC of a multicast group address, return the lower 6 bits.
*/
static uint32_t
dc_mchash_be(const uint8_t *addr)
{
uint32_t crc;
/* Compute CRC for the address value. */
crc = ether_crc32_be(addr, ETHER_ADDR_LEN);
/* Return the filter bit position. */
return ((crc >> 26) & 0x0000003F);
}
/*
* 21143-style RX filter setup routine. Filter programming is done by
* downloading a special setup frame into the TX engine. 21143, Macronix,
* PNIC, PNIC II and Davicom chips are programmed this way.
*
* We always program the chip using 'hash perfect' mode, i.e. one perfect
* address (our node address) and a 512-bit hash filter for multicast
* frames. We also sneak the broadcast address into the hash filter since
* we need that too.
*/
static void
dc_setfilt_21143(struct dc_softc *sc)
{
struct dc_desc *sframe;
u_int32_t h, *sp;
struct ifmultiaddr *ifma;
struct ifnet *ifp;
int i;
ifp = sc->dc_ifp;
i = sc->dc_cdata.dc_tx_prod;
DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT);
sc->dc_cdata.dc_tx_cnt++;
sframe = &sc->dc_ldata->dc_tx_list[i];
sp = sc->dc_cdata.dc_sbuf;
bzero(sp, DC_SFRAME_LEN);
sframe->dc_data = htole32(sc->dc_saddr);
sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP |
DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT);
sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf;
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
if (ifp->if_flags & IFF_ALLMULTI)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = dc_mchash_le(sc,
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
sp[h >> 4] |= htole32(1 << (h & 0xF));
}
IF_ADDR_UNLOCK(ifp);
if (ifp->if_flags & IFF_BROADCAST) {
h = dc_mchash_le(sc, ifp->if_broadcastaddr);
sp[h >> 4] |= htole32(1 << (h & 0xF));
}
/* Set our MAC address */
sp[39] = DC_SP_MAC(((u_int16_t *)IFP2ENADDR(sc->dc_ifp))[0]);
sp[40] = DC_SP_MAC(((u_int16_t *)IFP2ENADDR(sc->dc_ifp))[1]);
sp[41] = DC_SP_MAC(((u_int16_t *)IFP2ENADDR(sc->dc_ifp))[2]);
sframe->dc_status = htole32(DC_TXSTAT_OWN);
CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
/*
* The PNIC takes an exceedingly long time to process its
* setup frame; wait 10ms after posting the setup frame
* before proceeding, just so it has time to swallow its
* medicine.
*/
DELAY(10000);
ifp->if_timer = 5;
}
static void
dc_setfilt_admtek(struct dc_softc *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
int h = 0;
u_int32_t hashes[2] = { 0, 0 };
ifp = sc->dc_ifp;
/* Init our MAC address. */
CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&IFP2ENADDR(sc->dc_ifp)[0]));
CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&IFP2ENADDR(sc->dc_ifp)[4]));
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
if (ifp->if_flags & IFF_ALLMULTI)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
/* First, zot all the existing hash bits. */
CSR_WRITE_4(sc, DC_AL_MAR0, 0);
CSR_WRITE_4(sc, DC_AL_MAR1, 0);
/*
* If we're already in promisc or allmulti mode, we
* don't have to bother programming the multicast filter.
*/
if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))
return;
/* Now program new ones. */
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (DC_IS_CENTAUR(sc))
h = dc_mchash_le(sc,
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
else
h = dc_mchash_be(
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
}
IF_ADDR_UNLOCK(ifp);
CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]);
CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]);
}
static void
dc_setfilt_asix(struct dc_softc *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
int h = 0;
u_int32_t hashes[2] = { 0, 0 };
ifp = sc->dc_ifp;
/* Init our MAC address */
CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0);
CSR_WRITE_4(sc, DC_AX_FILTDATA,
*(u_int32_t *)(&IFP2ENADDR(sc->dc_ifp)[0]));
CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1);
CSR_WRITE_4(sc, DC_AX_FILTDATA,
*(u_int32_t *)(&IFP2ENADDR(sc->dc_ifp)[4]));
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
if (ifp->if_flags & IFF_ALLMULTI)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
/*
* The ASIX chip has a special bit to enable reception
* of broadcast frames.
*/
if (ifp->if_flags & IFF_BROADCAST)
DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD);
else
DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD);
/* first, zot all the existing hash bits */
CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0);
CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1);
CSR_WRITE_4(sc, DC_AX_FILTDATA, 0);
/*
* If we're already in promisc or allmulti mode, we
* don't have to bother programming the multicast filter.
*/
if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))
return;
/* now program new ones */
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = dc_mchash_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
}
IF_ADDR_UNLOCK(ifp);
CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0);
CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]);
CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1);
CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]);
}
static void
dc_setfilt_xircom(struct dc_softc *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
struct dc_desc *sframe;
u_int32_t h, *sp;
int i;
ifp = sc->dc_ifp;
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON));
i = sc->dc_cdata.dc_tx_prod;
DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT);
sc->dc_cdata.dc_tx_cnt++;
sframe = &sc->dc_ldata->dc_tx_list[i];
sp = sc->dc_cdata.dc_sbuf;
bzero(sp, DC_SFRAME_LEN);
sframe->dc_data = htole32(sc->dc_saddr);
sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP |
DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT);
sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf;
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC);
if (ifp->if_flags & IFF_ALLMULTI)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
else
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI);
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = dc_mchash_le(sc,
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
sp[h >> 4] |= htole32(1 << (h & 0xF));
}
IF_ADDR_UNLOCK(ifp);
if (ifp->if_flags & IFF_BROADCAST) {
h = dc_mchash_le(sc, ifp->if_broadcastaddr);
sp[h >> 4] |= htole32(1 << (h & 0xF));
}
/* Set our MAC address */
sp[0] = DC_SP_MAC(((u_int16_t *)IFP2ENADDR(sc->dc_ifp))[0]);
sp[1] = DC_SP_MAC(((u_int16_t *)IFP2ENADDR(sc->dc_ifp))[1]);
sp[2] = DC_SP_MAC(((u_int16_t *)IFP2ENADDR(sc->dc_ifp))[2]);
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
sframe->dc_status = htole32(DC_TXSTAT_OWN);
CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
/*
* Wait some time...
*/
DELAY(1000);
ifp->if_timer = 5;
}
static void
dc_setfilt(struct dc_softc *sc)
{
if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) ||
DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc))
dc_setfilt_21143(sc);
if (DC_IS_ASIX(sc))
dc_setfilt_asix(sc);
if (DC_IS_ADMTEK(sc))
dc_setfilt_admtek(sc);
if (DC_IS_XIRCOM(sc))
dc_setfilt_xircom(sc);
}
/*
* In order to fiddle with the 'full-duplex' and '100Mbps' bits in
* the netconfig register, we first have to put the transmit and/or
* receive logic in the idle state.
*/
static void
dc_setcfg(struct dc_softc *sc, int media)
{
int i, restart = 0, watchdogreg;
u_int32_t isr;
if (IFM_SUBTYPE(media) == IFM_NONE)
return;
if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)) {
restart = 1;
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON));
for (i = 0; i < DC_TIMEOUT; i++) {
isr = CSR_READ_4(sc, DC_ISR);
if (isr & DC_ISR_TX_IDLE &&
((isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED ||
(isr & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT))
break;
DELAY(10);
}
if (i == DC_TIMEOUT)
if_printf(sc->dc_ifp,
"failed to force tx and rx to idle state\n");
}
if (IFM_SUBTYPE(media) == IFM_100_TX) {
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL);
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT);
if (sc->dc_pmode == DC_PMODE_MII) {
if (DC_IS_INTEL(sc)) {
/* There's a write enable bit here that reads as 1. */
watchdogreg = CSR_READ_4(sc, DC_WATCHDOG);
watchdogreg &= ~DC_WDOG_CTLWREN;
watchdogreg |= DC_WDOG_JABBERDIS;
CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg);
} else {
DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS);
}
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS |
DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER));
if (sc->dc_type == DC_TYPE_98713)
DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS |
DC_NETCFG_SCRAMBLER));
if (!DC_IS_DAVICOM(sc))
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
if (DC_IS_INTEL(sc))
dc_apply_fixup(sc, IFM_AUTO);
} else {
if (DC_IS_PNIC(sc)) {
DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL);
DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP);
DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL);
}
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER);
if (DC_IS_INTEL(sc))
dc_apply_fixup(sc,
(media & IFM_GMASK) == IFM_FDX ?
IFM_100_TX | IFM_FDX : IFM_100_TX);
}
}
if (IFM_SUBTYPE(media) == IFM_10_T) {
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL);
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT);
if (sc->dc_pmode == DC_PMODE_MII) {
/* There's a write enable bit here that reads as 1. */
if (DC_IS_INTEL(sc)) {
watchdogreg = CSR_READ_4(sc, DC_WATCHDOG);
watchdogreg &= ~DC_WDOG_CTLWREN;
watchdogreg |= DC_WDOG_JABBERDIS;
CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg);
} else {
DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS);
}
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS |
DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER));
if (sc->dc_type == DC_TYPE_98713)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
if (!DC_IS_DAVICOM(sc))
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
if (DC_IS_INTEL(sc))
dc_apply_fixup(sc, IFM_AUTO);
} else {
if (DC_IS_PNIC(sc)) {
DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL);
DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP);
DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL);
}
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS);
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER);
if (DC_IS_INTEL(sc)) {
DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET);
DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF);
if ((media & IFM_GMASK) == IFM_FDX)
DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D);
else
DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F);
DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET);
DC_CLRBIT(sc, DC_10BTCTRL,
DC_TCTL_AUTONEGENBL);
dc_apply_fixup(sc,
(media & IFM_GMASK) == IFM_FDX ?
IFM_10_T | IFM_FDX : IFM_10_T);
DELAY(20000);
}
}
}
/*
* If this is a Davicom DM9102A card with a DM9801 HomePNA
* PHY and we want HomePNA mode, set the portsel bit to turn
* on the external MII port.
*/
if (DC_IS_DAVICOM(sc)) {
if (IFM_SUBTYPE(media) == IFM_HPNA_1) {
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
sc->dc_link = 1;
} else {
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL);
}
}
if ((media & IFM_GMASK) == IFM_FDX) {
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX);
if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc))
DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX);
} else {
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX);
if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc))
DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX);
}
if (restart)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON | DC_NETCFG_RX_ON);
}
static void
dc_reset(struct dc_softc *sc)
{
int i;
DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET);
for (i = 0; i < DC_TIMEOUT; i++) {
DELAY(10);
if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET))
break;
}
if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc) ||
DC_IS_XIRCOM(sc) || DC_IS_INTEL(sc)) {
DELAY(10000);
DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET);
i = 0;
}
if (i == DC_TIMEOUT)
if_printf(sc->dc_ifp, "reset never completed!\n");
/* Wait a little while for the chip to get its brains in order. */
DELAY(1000);
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000);
CSR_WRITE_4(sc, DC_NETCFG, 0x00000000);
/*
* Bring the SIA out of reset. In some cases, it looks
* like failing to unreset the SIA soon enough gets it
* into a state where it will never come out of reset
* until we reset the whole chip again.
*/
if (DC_IS_INTEL(sc)) {
DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET);
CSR_WRITE_4(sc, DC_10BTCTRL, 0);
CSR_WRITE_4(sc, DC_WATCHDOG, 0);
}
}
static struct dc_type *
dc_devtype(device_t dev)
{
struct dc_type *t;
u_int32_t rev;
t = dc_devs;
while (t->dc_name != NULL) {
if ((pci_get_vendor(dev) == t->dc_vid) &&
(pci_get_device(dev) == t->dc_did)) {
/* Check the PCI revision */
rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF;
if (t->dc_did == DC_DEVICEID_98713 &&
rev >= DC_REVISION_98713A)
t++;
if (t->dc_did == DC_DEVICEID_98713_CP &&
rev >= DC_REVISION_98713A)
t++;
if (t->dc_did == DC_DEVICEID_987x5 &&
rev >= DC_REVISION_98715AEC_C)
t++;
if (t->dc_did == DC_DEVICEID_987x5 &&
rev >= DC_REVISION_98725)
t++;
if (t->dc_did == DC_DEVICEID_AX88140A &&
rev >= DC_REVISION_88141)
t++;
if (t->dc_did == DC_DEVICEID_82C168 &&
rev >= DC_REVISION_82C169)
t++;
if (t->dc_did == DC_DEVICEID_DM9102 &&
rev >= DC_REVISION_DM9102A)
t++;
/*
* The Microsoft MN-130 has a device ID of 0x0002,
* which happens to be the same as the PNIC 82c168.
* To keep dc_attach() from getting confused, we
* pretend its ID is something different.
* XXX: ideally, dc_attach() should be checking
* vendorid+deviceid together to avoid such
* collisions.
*/
if (t->dc_vid == DC_VENDORID_MICROSOFT &&
t->dc_did == DC_DEVICEID_MSMN130)
t++;
return (t);
}
t++;
}
return (NULL);
}
/*
* Probe for a 21143 or clone chip. Check the PCI vendor and device
* IDs against our list and return a device name if we find a match.
* We do a little bit of extra work to identify the exact type of
* chip. The MX98713 and MX98713A have the same PCI vendor/device ID,
* but different revision IDs. The same is true for 98715/98715A
* chips and the 98725, as well as the ASIX and ADMtek chips. In some
* cases, the exact chip revision affects driver behavior.
*/
static int
dc_probe(device_t dev)
{
struct dc_type *t;
t = dc_devtype(dev);
if (t != NULL) {
device_set_desc(dev, t->dc_name);
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static void
dc_apply_fixup(struct dc_softc *sc, int media)
{
struct dc_mediainfo *m;
u_int8_t *p;
int i;
u_int32_t reg;
m = sc->dc_mi;
while (m != NULL) {
if (m->dc_media == media)
break;
m = m->dc_next;
}
if (m == NULL)
return;
for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) {
reg = (p[0] | (p[1] << 8)) << 16;
CSR_WRITE_4(sc, DC_WATCHDOG, reg);
}
for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) {
reg = (p[0] | (p[1] << 8)) << 16;
CSR_WRITE_4(sc, DC_WATCHDOG, reg);
}
}
static void
dc_decode_leaf_sia(struct dc_softc *sc, struct dc_eblock_sia *l)
{
struct dc_mediainfo *m;
m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO);
switch (l->dc_sia_code & ~DC_SIA_CODE_EXT) {
case DC_SIA_CODE_10BT:
m->dc_media = IFM_10_T;
break;
case DC_SIA_CODE_10BT_FDX:
m->dc_media = IFM_10_T | IFM_FDX;
break;
case DC_SIA_CODE_10B2:
m->dc_media = IFM_10_2;
break;
case DC_SIA_CODE_10B5:
m->dc_media = IFM_10_5;
break;
default:
break;
}
/*
* We need to ignore CSR13, CSR14, CSR15 for SIA mode.
* Things apparently already work for cards that do
* supply Media Specific Data.
*/
if (l->dc_sia_code & DC_SIA_CODE_EXT) {
m->dc_gp_len = 2;
m->dc_gp_ptr =
(u_int8_t *)&l->dc_un.dc_sia_ext.dc_sia_gpio_ctl;
} else {
m->dc_gp_len = 2;
m->dc_gp_ptr =
(u_int8_t *)&l->dc_un.dc_sia_noext.dc_sia_gpio_ctl;
}
m->dc_next = sc->dc_mi;
sc->dc_mi = m;
sc->dc_pmode = DC_PMODE_SIA;
}
static void
dc_decode_leaf_sym(struct dc_softc *sc, struct dc_eblock_sym *l)
{
struct dc_mediainfo *m;
m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO);
if (l->dc_sym_code == DC_SYM_CODE_100BT)
m->dc_media = IFM_100_TX;
if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX)
m->dc_media = IFM_100_TX | IFM_FDX;
m->dc_gp_len = 2;
m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl;
m->dc_next = sc->dc_mi;
sc->dc_mi = m;
sc->dc_pmode = DC_PMODE_SYM;
}
static void
dc_decode_leaf_mii(struct dc_softc *sc, struct dc_eblock_mii *l)
{
struct dc_mediainfo *m;
u_int8_t *p;
m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO);
/* We abuse IFM_AUTO to represent MII. */
m->dc_media = IFM_AUTO;
m->dc_gp_len = l->dc_gpr_len;
p = (u_int8_t *)l;
p += sizeof(struct dc_eblock_mii);
m->dc_gp_ptr = p;
p += 2 * l->dc_gpr_len;
m->dc_reset_len = *p;
p++;
m->dc_reset_ptr = p;
m->dc_next = sc->dc_mi;
sc->dc_mi = m;
}
static void
dc_read_srom(struct dc_softc *sc, int bits)
{
int size;
size = 2 << bits;
sc->dc_srom = malloc(size, M_DEVBUF, M_NOWAIT);
dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0);
}
static void
dc_parse_21143_srom(struct dc_softc *sc)
{
struct dc_leaf_hdr *lhdr;
struct dc_eblock_hdr *hdr;
int have_mii, i, loff;
char *ptr;
have_mii = 0;
loff = sc->dc_srom[27];
lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]);
ptr = (char *)lhdr;
ptr += sizeof(struct dc_leaf_hdr) - 1;
/*
* Look if we got a MII media block.
*/
for (i = 0; i < lhdr->dc_mcnt; i++) {
hdr = (struct dc_eblock_hdr *)ptr;
if (hdr->dc_type == DC_EBLOCK_MII)
have_mii++;
ptr += (hdr->dc_len & 0x7F);
ptr++;
}
/*
* Do the same thing again. Only use SIA and SYM media
* blocks if no MII media block is available.
*/
ptr = (char *)lhdr;
ptr += sizeof(struct dc_leaf_hdr) - 1;
for (i = 0; i < lhdr->dc_mcnt; i++) {
hdr = (struct dc_eblock_hdr *)ptr;
switch (hdr->dc_type) {
case DC_EBLOCK_MII:
dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr);
break;
case DC_EBLOCK_SIA:
if (! have_mii)
dc_decode_leaf_sia(sc,
(struct dc_eblock_sia *)hdr);
break;
case DC_EBLOCK_SYM:
if (! have_mii)
dc_decode_leaf_sym(sc,
(struct dc_eblock_sym *)hdr);
break;
default:
/* Don't care. Yet. */
break;
}
ptr += (hdr->dc_len & 0x7F);
ptr++;
}
}
static void
dc_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
u_int32_t *paddr;
KASSERT(nseg == 1, ("wrong number of segments, should be 1"));
paddr = arg;
*paddr = segs->ds_addr;
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int
dc_attach(device_t dev)
{
int tmp = 0;
u_char eaddr[ETHER_ADDR_LEN];
u_int32_t command;
struct dc_softc *sc;
struct ifnet *ifp;
u_int32_t revision;
int error = 0, rid, mac_offset;
int i;
u_int8_t *mac;
sc = device_get_softc(dev);
mtx_init(&sc->dc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
/*
* Map control/status registers.
*/
pci_enable_busmaster(dev);
rid = DC_RID;
sc->dc_res = bus_alloc_resource_any(dev, DC_RES, &rid, RF_ACTIVE);
if (sc->dc_res == NULL) {
device_printf(dev, "couldn't map ports/memory\n");
error = ENXIO;
goto fail;
}
sc->dc_btag = rman_get_bustag(sc->dc_res);
sc->dc_bhandle = rman_get_bushandle(sc->dc_res);
/* Allocate interrupt. */
rid = 0;
sc->dc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->dc_irq == NULL) {
device_printf(dev, "couldn't map interrupt\n");
error = ENXIO;
goto fail;
}
/* Need this info to decide on a chip type. */
sc->dc_info = dc_devtype(dev);
revision = pci_read_config(dev, DC_PCI_CFRV, 4) & 0x000000FF;
/* Get the eeprom width, but PNIC and XIRCOM have diff eeprom */
if (sc->dc_info->dc_did != DC_DEVICEID_82C168 &&
sc->dc_info->dc_did != DC_DEVICEID_X3201)
dc_eeprom_width(sc);
switch (sc->dc_info->dc_did) {
case DC_DEVICEID_21143:
sc->dc_type = DC_TYPE_21143;
sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR;
sc->dc_flags |= DC_REDUCED_MII_POLL;
/* Save EEPROM contents so we can parse them later. */
dc_read_srom(sc, sc->dc_romwidth);
break;
case DC_DEVICEID_DM9009:
case DC_DEVICEID_DM9100:
case DC_DEVICEID_DM9102:
sc->dc_type = DC_TYPE_DM9102;
sc->dc_flags |= DC_TX_COALESCE | DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_REDUCED_MII_POLL | DC_TX_STORENFWD;
sc->dc_flags |= DC_TX_ALIGN;
sc->dc_pmode = DC_PMODE_MII;
/* Increase the latency timer value. */
command = pci_read_config(dev, DC_PCI_CFLT, 4);
command &= 0xFFFF00FF;
command |= 0x00008000;
pci_write_config(dev, DC_PCI_CFLT, command, 4);
break;
case DC_DEVICEID_AL981:
sc->dc_type = DC_TYPE_AL981;
sc->dc_flags |= DC_TX_USE_TX_INTR;
sc->dc_flags |= DC_TX_ADMTEK_WAR;
sc->dc_pmode = DC_PMODE_MII;
dc_read_srom(sc, sc->dc_romwidth);
break;
case DC_DEVICEID_AN985:
case DC_DEVICEID_ADM9511:
case DC_DEVICEID_ADM9513:
case DC_DEVICEID_FA511:
case DC_DEVICEID_FE2500:
case DC_DEVICEID_EN2242:
case DC_DEVICEID_HAWKING_PN672TX:
case DC_DEVICEID_3CSOHOB:
case DC_DEVICEID_MSMN120:
case DC_DEVICEID_MSMN130_FAKE: /* XXX avoid collision with PNIC*/
sc->dc_type = DC_TYPE_AN985;
sc->dc_flags |= DC_64BIT_HASH;
sc->dc_flags |= DC_TX_USE_TX_INTR;
sc->dc_flags |= DC_TX_ADMTEK_WAR;
sc->dc_pmode = DC_PMODE_MII;
/* Don't read SROM for - auto-loaded on reset */
break;
case DC_DEVICEID_98713:
case DC_DEVICEID_98713_CP:
if (revision < DC_REVISION_98713A) {
sc->dc_type = DC_TYPE_98713;
}
if (revision >= DC_REVISION_98713A) {
sc->dc_type = DC_TYPE_98713A;
sc->dc_flags |= DC_21143_NWAY;
}
sc->dc_flags |= DC_REDUCED_MII_POLL;
sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR;
break;
case DC_DEVICEID_987x5:
case DC_DEVICEID_EN1217:
/*
* Macronix MX98715AEC-C/D/E parts have only a
* 128-bit hash table. We need to deal with these
* in the same manner as the PNIC II so that we
* get the right number of bits out of the
* CRC routine.
*/
if (revision >= DC_REVISION_98715AEC_C &&
revision < DC_REVISION_98725)
sc->dc_flags |= DC_128BIT_HASH;
sc->dc_type = DC_TYPE_987x5;
sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR;
sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY;
break;
case DC_DEVICEID_98727:
sc->dc_type = DC_TYPE_987x5;
sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR;
sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY;
break;
case DC_DEVICEID_82C115:
sc->dc_type = DC_TYPE_PNICII;
sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR | DC_128BIT_HASH;
sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY;
break;
case DC_DEVICEID_82C168:
sc->dc_type = DC_TYPE_PNIC;
sc->dc_flags |= DC_TX_STORENFWD | DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_PNIC_RX_BUG_WAR;
sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_NOWAIT);
if (revision < DC_REVISION_82C169)
sc->dc_pmode = DC_PMODE_SYM;
break;
case DC_DEVICEID_AX88140A:
sc->dc_type = DC_TYPE_ASIX;
sc->dc_flags |= DC_TX_USE_TX_INTR | DC_TX_INTR_FIRSTFRAG;
sc->dc_flags |= DC_REDUCED_MII_POLL;
sc->dc_pmode = DC_PMODE_MII;
break;
case DC_DEVICEID_X3201:
sc->dc_type = DC_TYPE_XIRCOM;
sc->dc_flags |= DC_TX_INTR_ALWAYS | DC_TX_COALESCE |
DC_TX_ALIGN;
/*
* We don't actually need to coalesce, but we're doing
* it to obtain a double word aligned buffer.
* The DC_TX_COALESCE flag is required.
*/
sc->dc_pmode = DC_PMODE_MII;
break;
case DC_DEVICEID_RS7112:
sc->dc_type = DC_TYPE_CONEXANT;
sc->dc_flags |= DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_REDUCED_MII_POLL;
sc->dc_pmode = DC_PMODE_MII;
dc_read_srom(sc, sc->dc_romwidth);
break;
default:
device_printf(dev, "unknown device: %x\n", sc->dc_info->dc_did);
break;
}
/* Save the cache line size. */
if (DC_IS_DAVICOM(sc))
sc->dc_cachesize = 0;
else
sc->dc_cachesize = pci_read_config(dev,
DC_PCI_CFLT, 4) & 0xFF;
/* Reset the adapter. */
dc_reset(sc);
/* Take 21143 out of snooze mode */
if (DC_IS_INTEL(sc) || DC_IS_XIRCOM(sc)) {
command = pci_read_config(dev, DC_PCI_CFDD, 4);
command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE);
pci_write_config(dev, DC_PCI_CFDD, command, 4);
}
/*
* Try to learn something about the supported media.
* We know that ASIX and ADMtek and Davicom devices
* will *always* be using MII media, so that's a no-brainer.
* The tricky ones are the Macronix/PNIC II and the
* Intel 21143.
*/
if (DC_IS_INTEL(sc))
dc_parse_21143_srom(sc);
else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
if (sc->dc_type == DC_TYPE_98713)
sc->dc_pmode = DC_PMODE_MII;
else
sc->dc_pmode = DC_PMODE_SYM;
} else if (!sc->dc_pmode)
sc->dc_pmode = DC_PMODE_MII;
/*
* Get station address from the EEPROM.
*/
switch(sc->dc_type) {
case DC_TYPE_98713:
case DC_TYPE_98713A:
case DC_TYPE_987x5:
case DC_TYPE_PNICII:
dc_read_eeprom(sc, (caddr_t)&mac_offset,
(DC_EE_NODEADDR_OFFSET / 2), 1, 0);
dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0);
break;
case DC_TYPE_PNIC:
dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1);
break;
case DC_TYPE_DM9102:
dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
#ifdef __sparc64__
/*
* If this is an onboard dc(4) the station address read from
* the EEPROM is all zero and we have to get it from the fcode.
*/
for (i = 0; i < ETHER_ADDR_LEN; i++)
if (eaddr[i] != 0x00)
break;
if (i >= ETHER_ADDR_LEN)
OF_getetheraddr(dev, eaddr);
#endif
break;
case DC_TYPE_21143:
case DC_TYPE_ASIX:
dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
break;
case DC_TYPE_AL981:
case DC_TYPE_AN985:
*(u_int32_t *)(&eaddr[0]) = CSR_READ_4(sc, DC_AL_PAR0);
*(u_int16_t *)(&eaddr[4]) = CSR_READ_4(sc, DC_AL_PAR1);
break;
case DC_TYPE_CONEXANT:
bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr,
ETHER_ADDR_LEN);
break;
case DC_TYPE_XIRCOM:
/* The MAC comes from the CIS. */
mac = pci_get_ether(dev);
if (!mac) {
device_printf(dev, "No station address in CIS!\n");
error = ENXIO;
goto fail;
}
bcopy(mac, eaddr, ETHER_ADDR_LEN);
break;
default:
dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
break;
}
/* Allocate a busdma tag and DMA safe memory for TX/RX descriptors. */
error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, sizeof(struct dc_list_data), 1,
sizeof(struct dc_list_data), 0, NULL, NULL, &sc->dc_ltag);
if (error) {
device_printf(dev, "failed to allocate busdma tag\n");
error = ENXIO;
goto fail;
}
error = bus_dmamem_alloc(sc->dc_ltag, (void **)&sc->dc_ldata,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->dc_lmap);
if (error) {
device_printf(dev, "failed to allocate DMA safe memory\n");
error = ENXIO;
goto fail;
}
error = bus_dmamap_load(sc->dc_ltag, sc->dc_lmap, sc->dc_ldata,
sizeof(struct dc_list_data), dc_dma_map_addr, &sc->dc_laddr,
BUS_DMA_NOWAIT);
if (error) {
device_printf(dev, "cannot get address of the descriptors\n");
error = ENXIO;
goto fail;
}
/*
* Allocate a busdma tag and DMA safe memory for the multicast
* setup frame.
*/
error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, DC_SFRAME_LEN + DC_MIN_FRAMELEN, 1,
DC_SFRAME_LEN + DC_MIN_FRAMELEN, 0, NULL, NULL, &sc->dc_stag);
if (error) {
device_printf(dev, "failed to allocate busdma tag\n");
error = ENXIO;
goto fail;
}
error = bus_dmamem_alloc(sc->dc_stag, (void **)&sc->dc_cdata.dc_sbuf,
BUS_DMA_NOWAIT, &sc->dc_smap);
if (error) {
device_printf(dev, "failed to allocate DMA safe memory\n");
error = ENXIO;
goto fail;
}
error = bus_dmamap_load(sc->dc_stag, sc->dc_smap, sc->dc_cdata.dc_sbuf,
DC_SFRAME_LEN, dc_dma_map_addr, &sc->dc_saddr, BUS_DMA_NOWAIT);
if (error) {
device_printf(dev, "cannot get address of the descriptors\n");
error = ENXIO;
goto fail;
}
/* Allocate a busdma tag for mbufs. */
error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, DC_TX_LIST_CNT, MCLBYTES,
0, NULL, NULL, &sc->dc_mtag);
if (error) {
device_printf(dev, "failed to allocate busdma tag\n");
error = ENXIO;
goto fail;
}
/* Create the TX/RX busdma maps. */
for (i = 0; i < DC_TX_LIST_CNT; i++) {
error = bus_dmamap_create(sc->dc_mtag, 0,
&sc->dc_cdata.dc_tx_map[i]);
if (error) {
device_printf(dev, "failed to init TX ring\n");
error = ENXIO;
goto fail;
}
}
for (i = 0; i < DC_RX_LIST_CNT; i++) {
error = bus_dmamap_create(sc->dc_mtag, 0,
&sc->dc_cdata.dc_rx_map[i]);
if (error) {
device_printf(dev, "failed to init RX ring\n");
error = ENXIO;
goto fail;
}
}
error = bus_dmamap_create(sc->dc_mtag, 0, &sc->dc_sparemap);
if (error) {
device_printf(dev, "failed to init RX ring\n");
error = ENXIO;
goto fail;
}
ifp = sc->dc_ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(dev, "can not if_alloc()\n");
error = ENOSPC;
goto fail;
}
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
/* XXX: bleah, MTU gets overwritten in ether_ifattach() */
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = dc_ioctl;
ifp->if_start = dc_start;
ifp->if_watchdog = dc_watchdog;
ifp->if_init = dc_init;
ifp->if_baudrate = 10000000;
IFQ_SET_MAXLEN(&ifp->if_snd, DC_TX_LIST_CNT - 1);
ifp->if_snd.ifq_drv_maxlen = DC_TX_LIST_CNT - 1;
IFQ_SET_READY(&ifp->if_snd);
/*
* Do MII setup. If this is a 21143, check for a PHY on the
* MII bus after applying any necessary fixups to twiddle the
* GPIO bits. If we don't end up finding a PHY, restore the
* old selection (SIA only or SIA/SYM) and attach the dcphy
* driver instead.
*/
if (DC_IS_INTEL(sc)) {
dc_apply_fixup(sc, IFM_AUTO);
tmp = sc->dc_pmode;
sc->dc_pmode = DC_PMODE_MII;
}
/*
* Setup General Purpose port mode and data so the tulip can talk
* to the MII. This needs to be done before mii_phy_probe so that
* we can actually see them.
*/
if (DC_IS_XIRCOM(sc)) {
CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN |
DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT);
DELAY(10);
CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN |
DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT);
DELAY(10);
}
error = mii_phy_probe(dev, &sc->dc_miibus,
dc_ifmedia_upd, dc_ifmedia_sts);
if (error && DC_IS_INTEL(sc)) {
sc->dc_pmode = tmp;
if (sc->dc_pmode != DC_PMODE_SIA)
sc->dc_pmode = DC_PMODE_SYM;
sc->dc_flags |= DC_21143_NWAY;
mii_phy_probe(dev, &sc->dc_miibus,
dc_ifmedia_upd, dc_ifmedia_sts);
/*
* For non-MII cards, we need to have the 21143
* drive the LEDs. Except there are some systems
* like the NEC VersaPro NoteBook PC which have no
* LEDs, and twiddling these bits has adverse effects
* on them. (I.e. you suddenly can't get a link.)
*/
if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033)
sc->dc_flags |= DC_TULIP_LEDS;
error = 0;
}
if (error) {
device_printf(dev, "MII without any PHY!\n");
goto fail;
}
if (DC_IS_ADMTEK(sc)) {
/*
* Set automatic TX underrun recovery for the ADMtek chips
*/
DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR);
}
/*
* Tell the upper layer(s) we support long frames.
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
callout_init_mtx(&sc->dc_stat_ch, &sc->dc_mtx, 0);
#ifdef SRM_MEDIA
sc->dc_srm_media = 0;
/* Remember the SRM console media setting */
if (DC_IS_INTEL(sc)) {
command = pci_read_config(dev, DC_PCI_CFDD, 4);
command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE);
switch ((command >> 8) & 0xff) {
case 3:
sc->dc_srm_media = IFM_10_T;
break;
case 4:
sc->dc_srm_media = IFM_10_T | IFM_FDX;
break;
case 5:
sc->dc_srm_media = IFM_100_TX;
break;
case 6:
sc->dc_srm_media = IFM_100_TX | IFM_FDX;
break;
}
if (sc->dc_srm_media)
sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER;
}
#endif
/*
* Call MI attach routine.
*/
ether_ifattach(ifp, eaddr);
/* Hook interrupt last to avoid having to lock softc */
error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET | INTR_MPSAFE,
dc_intr, sc, &sc->dc_intrhand);
if (error) {
device_printf(dev, "couldn't set up irq\n");
ether_ifdetach(ifp);
goto fail;
}
fail:
if (error)
dc_detach(dev);
return (error);
}
/*
* Shutdown hardware and free up resources. This can be called any
* time after the mutex has been initialized. It is called in both
* the error case in attach and the normal detach case so it needs
* to be careful about only freeing resources that have actually been
* allocated.
*/
static int
dc_detach(device_t dev)
{
struct dc_softc *sc;
struct ifnet *ifp;
struct dc_mediainfo *m;
int i;
sc = device_get_softc(dev);
KASSERT(mtx_initialized(&sc->dc_mtx), ("dc mutex not initialized"));
ifp = sc->dc_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
DC_LOCK(sc);
dc_stop(sc);
DC_UNLOCK(sc);
callout_drain(&sc->dc_stat_ch);
ether_ifdetach(ifp);
}
if (ifp)
if_free(ifp);
if (sc->dc_miibus)
device_delete_child(dev, sc->dc_miibus);
bus_generic_detach(dev);
if (sc->dc_intrhand)
bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand);
if (sc->dc_irq)
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq);
if (sc->dc_res)
bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res);
if (sc->dc_cdata.dc_sbuf != NULL)
bus_dmamem_free(sc->dc_stag, sc->dc_cdata.dc_sbuf, sc->dc_smap);
if (sc->dc_ldata != NULL)
bus_dmamem_free(sc->dc_ltag, sc->dc_ldata, sc->dc_lmap);
if (sc->dc_mtag) {
for (i = 0; i < DC_TX_LIST_CNT; i++)
if (sc->dc_cdata.dc_tx_map[i] != NULL)
bus_dmamap_destroy(sc->dc_mtag,
sc->dc_cdata.dc_tx_map[i]);
for (i = 0; i < DC_RX_LIST_CNT; i++)
if (sc->dc_cdata.dc_rx_map[i] != NULL)
bus_dmamap_destroy(sc->dc_mtag,
sc->dc_cdata.dc_rx_map[i]);
bus_dmamap_destroy(sc->dc_mtag, sc->dc_sparemap);
}
if (sc->dc_stag)
bus_dma_tag_destroy(sc->dc_stag);
if (sc->dc_mtag)
bus_dma_tag_destroy(sc->dc_mtag);
if (sc->dc_ltag)
bus_dma_tag_destroy(sc->dc_ltag);
free(sc->dc_pnic_rx_buf, M_DEVBUF);
while (sc->dc_mi != NULL) {
m = sc->dc_mi->dc_next;
free(sc->dc_mi, M_DEVBUF);
sc->dc_mi = m;
}
free(sc->dc_srom, M_DEVBUF);
mtx_destroy(&sc->dc_mtx);
return (0);
}
/*
* Initialize the transmit descriptors.
*/
static int
dc_list_tx_init(struct dc_softc *sc)
{
struct dc_chain_data *cd;
struct dc_list_data *ld;
int i, nexti;
cd = &sc->dc_cdata;
ld = sc->dc_ldata;
for (i = 0; i < DC_TX_LIST_CNT; i++) {
if (i == DC_TX_LIST_CNT - 1)
nexti = 0;
else
nexti = i + 1;
ld->dc_tx_list[i].dc_next = htole32(DC_TXDESC(sc, nexti));
cd->dc_tx_chain[i] = NULL;
ld->dc_tx_list[i].dc_data = 0;
ld->dc_tx_list[i].dc_ctl = 0;
}
cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0;
bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
return (0);
}
/*
* Initialize the RX descriptors and allocate mbufs for them. Note that
* we arrange the descriptors in a closed ring, so that the last descriptor
* points back to the first.
*/
static int
dc_list_rx_init(struct dc_softc *sc)
{
struct dc_chain_data *cd;
struct dc_list_data *ld;
int i, nexti;
cd = &sc->dc_cdata;
ld = sc->dc_ldata;
for (i = 0; i < DC_RX_LIST_CNT; i++) {
if (dc_newbuf(sc, i, 1) != 0)
return (ENOBUFS);
if (i == DC_RX_LIST_CNT - 1)
nexti = 0;
else
nexti = i + 1;
ld->dc_rx_list[i].dc_next = htole32(DC_RXDESC(sc, nexti));
}
cd->dc_rx_prod = 0;
bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
return (0);
}
static void
dc_dma_map_rxbuf(arg, segs, nseg, mapsize, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
bus_size_t mapsize;
int error;
{
struct dc_softc *sc;
struct dc_desc *c;
sc = arg;
c = &sc->dc_ldata->dc_rx_list[sc->dc_cdata.dc_rx_cur];
if (error) {
sc->dc_cdata.dc_rx_err = error;
return;
}
KASSERT(nseg == 1, ("wrong number of segments, should be 1"));
sc->dc_cdata.dc_rx_err = 0;
c->dc_data = htole32(segs->ds_addr);
}
/*
* Initialize an RX descriptor and attach an MBUF cluster.
*/
static int
dc_newbuf(struct dc_softc *sc, int i, int alloc)
{
struct mbuf *m_new;
bus_dmamap_t tmp;
int error;
if (alloc) {
m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
if (m_new == NULL)
return (ENOBUFS);
} else {
m_new = sc->dc_cdata.dc_rx_chain[i];
m_new->m_data = m_new->m_ext.ext_buf;
}
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
m_adj(m_new, sizeof(u_int64_t));
/*
* If this is a PNIC chip, zero the buffer. This is part
* of the workaround for the receive bug in the 82c168 and
* 82c169 chips.
*/
if (sc->dc_flags & DC_PNIC_RX_BUG_WAR)
bzero(mtod(m_new, char *), m_new->m_len);
/* No need to remap the mbuf if we're reusing it. */
if (alloc) {
sc->dc_cdata.dc_rx_cur = i;
error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_sparemap,
m_new, dc_dma_map_rxbuf, sc, 0);
if (error) {
m_freem(m_new);
return (error);
}
if (sc->dc_cdata.dc_rx_err != 0) {
m_freem(m_new);
return (sc->dc_cdata.dc_rx_err);
}
bus_dmamap_unload(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i]);
tmp = sc->dc_cdata.dc_rx_map[i];
sc->dc_cdata.dc_rx_map[i] = sc->dc_sparemap;
sc->dc_sparemap = tmp;
sc->dc_cdata.dc_rx_chain[i] = m_new;
}
sc->dc_ldata->dc_rx_list[i].dc_ctl = htole32(DC_RXCTL_RLINK | DC_RXLEN);
sc->dc_ldata->dc_rx_list[i].dc_status = htole32(DC_RXSTAT_OWN);
bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i],
BUS_DMASYNC_PREREAD);
bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
return (0);
}
/*
* Grrrrr.
* The PNIC chip has a terrible bug in it that manifests itself during
* periods of heavy activity. The exact mode of failure if difficult to
* pinpoint: sometimes it only happens in promiscuous mode, sometimes it
* will happen on slow machines. The bug is that sometimes instead of
* uploading one complete frame during reception, it uploads what looks
* like the entire contents of its FIFO memory. The frame we want is at
* the end of the whole mess, but we never know exactly how much data has
* been uploaded, so salvaging the frame is hard.
*
* There is only one way to do it reliably, and it's disgusting.
* Here's what we know:
*
* - We know there will always be somewhere between one and three extra
* descriptors uploaded.
*
* - We know the desired received frame will always be at the end of the
* total data upload.
*
* - We know the size of the desired received frame because it will be
* provided in the length field of the status word in the last descriptor.
*
* Here's what we do:
*
* - When we allocate buffers for the receive ring, we bzero() them.
* This means that we know that the buffer contents should be all
* zeros, except for data uploaded by the chip.
*
* - We also force the PNIC chip to upload frames that include the
* ethernet CRC at the end.
*
* - We gather all of the bogus frame data into a single buffer.
*
* - We then position a pointer at the end of this buffer and scan
* backwards until we encounter the first non-zero byte of data.
* This is the end of the received frame. We know we will encounter
* some data at the end of the frame because the CRC will always be
* there, so even if the sender transmits a packet of all zeros,
* we won't be fooled.
*
* - We know the size of the actual received frame, so we subtract
* that value from the current pointer location. This brings us
* to the start of the actual received packet.
*
* - We copy this into an mbuf and pass it on, along with the actual
* frame length.
*
* The performance hit is tremendous, but it beats dropping frames all
* the time.
*/
#define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG | DC_RXSTAT_LASTFRAG)
static void
dc_pnic_rx_bug_war(struct dc_softc *sc, int idx)
{
struct dc_desc *cur_rx;
struct dc_desc *c = NULL;
struct mbuf *m = NULL;
unsigned char *ptr;
int i, total_len;
u_int32_t rxstat = 0;
i = sc->dc_pnic_rx_bug_save;
cur_rx = &sc->dc_ldata->dc_rx_list[idx];
ptr = sc->dc_pnic_rx_buf;
bzero(ptr, DC_RXLEN * 5);
/* Copy all the bytes from the bogus buffers. */
while (1) {
c = &sc->dc_ldata->dc_rx_list[i];
rxstat = le32toh(c->dc_status);
m = sc->dc_cdata.dc_rx_chain[i];
bcopy(mtod(m, char *), ptr, DC_RXLEN);
ptr += DC_RXLEN;
/* If this is the last buffer, break out. */
if (i == idx || rxstat & DC_RXSTAT_LASTFRAG)
break;
dc_newbuf(sc, i, 0);
DC_INC(i, DC_RX_LIST_CNT);
}
/* Find the length of the actual receive frame. */
total_len = DC_RXBYTES(rxstat);
/* Scan backwards until we hit a non-zero byte. */
while (*ptr == 0x00)
ptr--;
/* Round off. */
if ((uintptr_t)(ptr) & 0x3)
ptr -= 1;
/* Now find the start of the frame. */
ptr -= total_len;
if (ptr < sc->dc_pnic_rx_buf)
ptr = sc->dc_pnic_rx_buf;
/*
* Now copy the salvaged frame to the last mbuf and fake up
* the status word to make it look like a successful
* frame reception.
*/
dc_newbuf(sc, i, 0);
bcopy(ptr, mtod(m, char *), total_len);
cur_rx->dc_status = htole32(rxstat | DC_RXSTAT_FIRSTFRAG);
}
/*
* This routine searches the RX ring for dirty descriptors in the
* event that the rxeof routine falls out of sync with the chip's
* current descriptor pointer. This may happen sometimes as a result
* of a "no RX buffer available" condition that happens when the chip
* consumes all of the RX buffers before the driver has a chance to
* process the RX ring. This routine may need to be called more than
* once to bring the driver back in sync with the chip, however we
* should still be getting RX DONE interrupts to drive the search
* for new packets in the RX ring, so we should catch up eventually.
*/
static int
dc_rx_resync(struct dc_softc *sc)
{
struct dc_desc *cur_rx;
int i, pos;
pos = sc->dc_cdata.dc_rx_prod;
for (i = 0; i < DC_RX_LIST_CNT; i++) {
cur_rx = &sc->dc_ldata->dc_rx_list[pos];
if (!(le32toh(cur_rx->dc_status) & DC_RXSTAT_OWN))
break;
DC_INC(pos, DC_RX_LIST_CNT);
}
/* If the ring really is empty, then just return. */
if (i == DC_RX_LIST_CNT)
return (0);
/* We've fallen behing the chip: catch it. */
sc->dc_cdata.dc_rx_prod = pos;
return (EAGAIN);
}
/*
* A frame has been uploaded: pass the resulting mbuf chain up to
* the higher level protocols.
*/
static void
dc_rxeof(struct dc_softc *sc)
{
struct mbuf *m;
struct ifnet *ifp;
struct dc_desc *cur_rx;
int i, total_len = 0;
u_int32_t rxstat;
DC_LOCK_ASSERT(sc);
ifp = sc->dc_ifp;
i = sc->dc_cdata.dc_rx_prod;
bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD);
while (!(le32toh(sc->dc_ldata->dc_rx_list[i].dc_status) &
DC_RXSTAT_OWN)) {
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif
cur_rx = &sc->dc_ldata->dc_rx_list[i];
rxstat = le32toh(cur_rx->dc_status);
m = sc->dc_cdata.dc_rx_chain[i];
bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i],
BUS_DMASYNC_POSTREAD);
total_len = DC_RXBYTES(rxstat);
if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) {
if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) {
if (rxstat & DC_RXSTAT_FIRSTFRAG)
sc->dc_pnic_rx_bug_save = i;
if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) {
DC_INC(i, DC_RX_LIST_CNT);
continue;
}
dc_pnic_rx_bug_war(sc, i);
rxstat = le32toh(cur_rx->dc_status);
total_len = DC_RXBYTES(rxstat);
}
}
/*
* If an error occurs, update stats, clear the
* status word and leave the mbuf cluster in place:
* it should simply get re-used next time this descriptor
* comes up in the ring. However, don't report long
* frames as errors since they could be vlans.
*/
if ((rxstat & DC_RXSTAT_RXERR)) {
if (!(rxstat & DC_RXSTAT_GIANT) ||
(rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE |
DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN |
DC_RXSTAT_RUNT | DC_RXSTAT_DE))) {
ifp->if_ierrors++;
if (rxstat & DC_RXSTAT_COLLSEEN)
ifp->if_collisions++;
dc_newbuf(sc, i, 0);
if (rxstat & DC_RXSTAT_CRCERR) {
DC_INC(i, DC_RX_LIST_CNT);
continue;
} else {
dc_init_locked(sc);
return;
}
}
}
/* No errors; receive the packet. */
total_len -= ETHER_CRC_LEN;
#ifdef __i386__
/*
* On the x86 we do not have alignment problems, so try to
* allocate a new buffer for the receive ring, and pass up
* the one where the packet is already, saving the expensive
* copy done in m_devget().
* If we are on an architecture with alignment problems, or
* if the allocation fails, then use m_devget and leave the
* existing buffer in the receive ring.
*/
if (dc_quick && dc_newbuf(sc, i, 1) == 0) {
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = total_len;
DC_INC(i, DC_RX_LIST_CNT);
} else
#endif
{
struct mbuf *m0;
m0 = m_devget(mtod(m, char *), total_len,
ETHER_ALIGN, ifp, NULL);
dc_newbuf(sc, i, 0);
DC_INC(i, DC_RX_LIST_CNT);
if (m0 == NULL) {
ifp->if_ierrors++;
continue;
}
m = m0;
}
ifp->if_ipackets++;
DC_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
DC_LOCK(sc);
}
sc->dc_cdata.dc_rx_prod = i;
}
/*
* A frame was downloaded to the chip. It's safe for us to clean up
* the list buffers.
*/
static void
dc_txeof(struct dc_softc *sc)
{
struct dc_desc *cur_tx = NULL;
struct ifnet *ifp;
int idx;
u_int32_t ctl, txstat;
ifp = sc->dc_ifp;
/*
* Go through our tx list and free mbufs for those
* frames that have been transmitted.
*/
bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD);
idx = sc->dc_cdata.dc_tx_cons;
while (idx != sc->dc_cdata.dc_tx_prod) {
cur_tx = &sc->dc_ldata->dc_tx_list[idx];
txstat = le32toh(cur_tx->dc_status);
ctl = le32toh(cur_tx->dc_ctl);
if (txstat & DC_TXSTAT_OWN)
break;
if (!(ctl & DC_TXCTL_LASTFRAG) || ctl & DC_TXCTL_SETUP) {
if (ctl & DC_TXCTL_SETUP) {
/*
* Yes, the PNIC is so brain damaged
* that it will sometimes generate a TX
* underrun error while DMAing the RX
* filter setup frame. If we detect this,
* we have to send the setup frame again,
* or else the filter won't be programmed
* correctly.
*/
if (DC_IS_PNIC(sc)) {
if (txstat & DC_TXSTAT_ERRSUM)
dc_setfilt(sc);
}
sc->dc_cdata.dc_tx_chain[idx] = NULL;
}
sc->dc_cdata.dc_tx_cnt--;
DC_INC(idx, DC_TX_LIST_CNT);
continue;
}
if (DC_IS_XIRCOM(sc) || DC_IS_CONEXANT(sc)) {
/*
* XXX: Why does my Xircom taunt me so?
* For some reason it likes setting the CARRLOST flag
* even when the carrier is there. wtf?!?
* Who knows, but Conexant chips have the
* same problem. Maybe they took lessons
* from Xircom.
*/
if (/*sc->dc_type == DC_TYPE_21143 &&*/
sc->dc_pmode == DC_PMODE_MII &&
((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM |
DC_TXSTAT_NOCARRIER)))
txstat &= ~DC_TXSTAT_ERRSUM;
} else {
if (/*sc->dc_type == DC_TYPE_21143 &&*/
sc->dc_pmode == DC_PMODE_MII &&
((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM |
DC_TXSTAT_NOCARRIER | DC_TXSTAT_CARRLOST)))
txstat &= ~DC_TXSTAT_ERRSUM;
}
if (txstat & DC_TXSTAT_ERRSUM) {
ifp->if_oerrors++;
if (txstat & DC_TXSTAT_EXCESSCOLL)
ifp->if_collisions++;
if (txstat & DC_TXSTAT_LATECOLL)
ifp->if_collisions++;
if (!(txstat & DC_TXSTAT_UNDERRUN)) {
dc_init_locked(sc);
return;
}
}
ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3;
ifp->if_opackets++;
if (sc->dc_cdata.dc_tx_chain[idx] != NULL) {
bus_dmamap_sync(sc->dc_mtag,
sc->dc_cdata.dc_tx_map[idx],
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->dc_mtag,
sc->dc_cdata.dc_tx_map[idx]);
m_freem(sc->dc_cdata.dc_tx_chain[idx]);
sc->dc_cdata.dc_tx_chain[idx] = NULL;
}
sc->dc_cdata.dc_tx_cnt--;
DC_INC(idx, DC_TX_LIST_CNT);
}
if (idx != sc->dc_cdata.dc_tx_cons) {
/* Some buffers have been freed. */
sc->dc_cdata.dc_tx_cons = idx;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5;
}
static void
dc_tick(void *xsc)
{
struct dc_softc *sc;
struct mii_data *mii;
struct ifnet *ifp;
u_int32_t r;
sc = xsc;
DC_LOCK_ASSERT(sc);
ifp = sc->dc_ifp;
mii = device_get_softc(sc->dc_miibus);
if (sc->dc_flags & DC_REDUCED_MII_POLL) {
if (sc->dc_flags & DC_21143_NWAY) {
r = CSR_READ_4(sc, DC_10BTSTAT);
if (IFM_SUBTYPE(mii->mii_media_active) ==
IFM_100_TX && (r & DC_TSTAT_LS100)) {
sc->dc_link = 0;
mii_mediachg(mii);
}
if (IFM_SUBTYPE(mii->mii_media_active) ==
IFM_10_T && (r & DC_TSTAT_LS10)) {
sc->dc_link = 0;
mii_mediachg(mii);
}
if (sc->dc_link == 0)
mii_tick(mii);
} else {
r = CSR_READ_4(sc, DC_ISR);
if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT &&
sc->dc_cdata.dc_tx_cnt == 0) {
mii_tick(mii);
if (!(mii->mii_media_status & IFM_ACTIVE))
sc->dc_link = 0;
}
}
} else
mii_tick(mii);
/*
* When the init routine completes, we expect to be able to send
* packets right away, and in fact the network code will send a
* gratuitous ARP the moment the init routine marks the interface
* as running. However, even though the MAC may have been initialized,
* there may be a delay of a few seconds before the PHY completes
* autonegotiation and the link is brought up. Any transmissions
* made during that delay will be lost. Dealing with this is tricky:
* we can't just pause in the init routine while waiting for the
* PHY to come ready since that would bring the whole system to
* a screeching halt for several seconds.
*
* What we do here is prevent the TX start routine from sending
* any packets until a link has been established. After the
* interface has been initialized, the tick routine will poll
* the state of the PHY until the IFM_ACTIVE flag is set. Until
* that time, packets will stay in the send queue, and once the
* link comes up, they will be flushed out to the wire.
*/
if (!sc->dc_link && mii->mii_media_status & IFM_ACTIVE &&
IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
sc->dc_link++;
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
dc_start_locked(ifp);
}
if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link)
callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc);
else
callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc);
}
/*
* A transmit underrun has occurred. Back off the transmit threshold,
* or switch to store and forward mode if we have to.
*/
static void
dc_tx_underrun(struct dc_softc *sc)
{
u_int32_t isr;
int i;
if (DC_IS_DAVICOM(sc))
dc_init_locked(sc);
if (DC_IS_INTEL(sc)) {
/*
* The real 21143 requires that the transmitter be idle
* in order to change the transmit threshold or store
* and forward state.
*/
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
for (i = 0; i < DC_TIMEOUT; i++) {
isr = CSR_READ_4(sc, DC_ISR);
if (isr & DC_ISR_TX_IDLE)
break;
DELAY(10);
}
if (i == DC_TIMEOUT) {
if_printf(sc->dc_ifp,
"failed to force tx to idle state\n");
dc_init_locked(sc);
}
}
if_printf(sc->dc_ifp, "TX underrun -- ");
sc->dc_txthresh += DC_TXTHRESH_INC;
if (sc->dc_txthresh > DC_TXTHRESH_MAX) {
printf("using store and forward mode\n");
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
} else {
printf("increasing TX threshold\n");
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH);
DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh);
}
if (DC_IS_INTEL(sc))
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
}
#ifdef DEVICE_POLLING
static poll_handler_t dc_poll;
static void
dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
{
struct dc_softc *sc = ifp->if_softc;
DC_LOCK(sc);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
DC_UNLOCK(sc);
return;
}
sc->rxcycles = count;
dc_rxeof(sc);
dc_txeof(sc);
if (!IFQ_IS_EMPTY(&ifp->if_snd) &&
!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
dc_start_locked(ifp);
if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */
u_int32_t status;
status = CSR_READ_4(sc, DC_ISR);
status &= (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF |
DC_ISR_TX_NOBUF | DC_ISR_TX_IDLE | DC_ISR_TX_UNDERRUN |
DC_ISR_BUS_ERR);
if (!status) {
DC_UNLOCK(sc);
return;
}
/* ack what we have */
CSR_WRITE_4(sc, DC_ISR, status);
if (status & (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF)) {
u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED);
ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff);
if (dc_rx_resync(sc))
dc_rxeof(sc);
}
/* restart transmit unit if necessary */
if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt)
CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
if (status & DC_ISR_TX_UNDERRUN)
dc_tx_underrun(sc);
if (status & DC_ISR_BUS_ERR) {
if_printf(ifp, "dc_poll: bus error\n");
dc_reset(sc);
dc_init_locked(sc);
}
}
DC_UNLOCK(sc);
}
#endif /* DEVICE_POLLING */
static void
dc_intr(void *arg)
{
struct dc_softc *sc;
struct ifnet *ifp;
u_int32_t status;
sc = arg;
if (sc->suspended)
return;
if ((CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0)
return;
DC_LOCK(sc);
ifp = sc->dc_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING) {
DC_UNLOCK(sc);
return;
}
#endif
/* Suppress unwanted interrupts */
if (!(ifp->if_flags & IFF_UP)) {
if (CSR_READ_4(sc, DC_ISR) & DC_INTRS)
dc_stop(sc);
DC_UNLOCK(sc);
return;
}
/* Disable interrupts. */
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
while (((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS)
&& status != 0xFFFFFFFF) {
CSR_WRITE_4(sc, DC_ISR, status);
if (status & DC_ISR_RX_OK) {
int curpkts;
curpkts = ifp->if_ipackets;
dc_rxeof(sc);
if (curpkts == ifp->if_ipackets) {
while (dc_rx_resync(sc))
dc_rxeof(sc);
}
}
if (status & (DC_ISR_TX_OK | DC_ISR_TX_NOBUF))
dc_txeof(sc);
if (status & DC_ISR_TX_IDLE) {
dc_txeof(sc);
if (sc->dc_cdata.dc_tx_cnt) {
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
}
}
if (status & DC_ISR_TX_UNDERRUN)
dc_tx_underrun(sc);
if ((status & DC_ISR_RX_WATDOGTIMEO)
|| (status & DC_ISR_RX_NOBUF)) {
int curpkts;
curpkts = ifp->if_ipackets;
dc_rxeof(sc);
if (curpkts == ifp->if_ipackets) {
while (dc_rx_resync(sc))
dc_rxeof(sc);
}
}
if (status & DC_ISR_BUS_ERR) {
dc_reset(sc);
dc_init_locked(sc);
}
}
/* Re-enable interrupts. */
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
dc_start_locked(ifp);
DC_UNLOCK(sc);
}
static void
dc_dma_map_txbuf(arg, segs, nseg, mapsize, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
bus_size_t mapsize;
int error;
{
struct dc_softc *sc;
struct dc_desc *f;
int cur, first, frag, i;
sc = arg;
if (error) {
sc->dc_cdata.dc_tx_err = error;
return;
}
first = cur = frag = sc->dc_cdata.dc_tx_prod;
for (i = 0; i < nseg; i++) {
if ((sc->dc_flags & DC_TX_ADMTEK_WAR) &&
(frag == (DC_TX_LIST_CNT - 1)) &&
(first != sc->dc_cdata.dc_tx_first)) {
bus_dmamap_unload(sc->dc_mtag,
sc->dc_cdata.dc_tx_map[first]);
sc->dc_cdata.dc_tx_err = ENOBUFS;
return;
}
f = &sc->dc_ldata->dc_tx_list[frag];
f->dc_ctl = htole32(DC_TXCTL_TLINK | segs[i].ds_len);
if (i == 0) {
f->dc_status = 0;
f->dc_ctl |= htole32(DC_TXCTL_FIRSTFRAG);
} else
f->dc_status = htole32(DC_TXSTAT_OWN);
f->dc_data = htole32(segs[i].ds_addr);
cur = frag;
DC_INC(frag, DC_TX_LIST_CNT);
}
sc->dc_cdata.dc_tx_err = 0;
sc->dc_cdata.dc_tx_prod = frag;
sc->dc_cdata.dc_tx_cnt += nseg;
sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_LASTFRAG);
sc->dc_cdata.dc_tx_chain[cur] = sc->dc_cdata.dc_tx_mapping;
if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG)
sc->dc_ldata->dc_tx_list[first].dc_ctl |=
htole32(DC_TXCTL_FINT);
if (sc->dc_flags & DC_TX_INTR_ALWAYS)
sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT);
if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64)
sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT);
sc->dc_ldata->dc_tx_list[first].dc_status = htole32(DC_TXSTAT_OWN);
}
/*
* Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
* pointers to the fragment pointers.
*/
static int
dc_encap(struct dc_softc *sc, struct mbuf **m_head)
{
struct mbuf *m;
int error, idx, chainlen = 0;
/*
* If there's no way we can send any packets, return now.
*/
if (DC_TX_LIST_CNT - sc->dc_cdata.dc_tx_cnt < 6)
return (ENOBUFS);
/*
* Count the number of frags in this chain to see if
* we need to m_defrag. Since the descriptor list is shared
* by all packets, we'll m_defrag long chains so that they
* do not use up the entire list, even if they would fit.
*/
for (m = *m_head; m != NULL; m = m->m_next)
chainlen++;
if ((chainlen > DC_TX_LIST_CNT / 4) ||
((DC_TX_LIST_CNT - (chainlen + sc->dc_cdata.dc_tx_cnt)) < 6)) {
m = m_defrag(*m_head, M_DONTWAIT);
if (m == NULL)
return (ENOBUFS);
*m_head = m;
}
/*
* Start packing the mbufs in this chain into
* the fragment pointers. Stop when we run out
* of fragments or hit the end of the mbuf chain.
*/
idx = sc->dc_cdata.dc_tx_prod;
sc->dc_cdata.dc_tx_mapping = *m_head;
error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx],
*m_head, dc_dma_map_txbuf, sc, 0);
if (error)
return (error);
if (sc->dc_cdata.dc_tx_err != 0)
return (sc->dc_cdata.dc_tx_err);
bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx],
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
return (0);
}
/*
* Main transmit routine. To avoid having to do mbuf copies, we put pointers
* to the mbuf data regions directly in the transmit lists. We also save a
* copy of the pointers since the transmit list fragment pointers are
* physical addresses.
*/
static void
dc_start(struct ifnet *ifp)
{
struct dc_softc *sc;
sc = ifp->if_softc;
DC_LOCK(sc);
dc_start_locked(ifp);
DC_UNLOCK(sc);
}
static void
dc_start_locked(struct ifnet *ifp)
{
struct dc_softc *sc;
struct mbuf *m_head = NULL, *m;
unsigned int queued = 0;
int idx;
sc = ifp->if_softc;
DC_LOCK_ASSERT(sc);
if (!sc->dc_link && ifp->if_snd.ifq_len < 10)
return;
if (ifp->if_drv_flags & IFF_DRV_OACTIVE)
return;
idx = sc->dc_cdata.dc_tx_first = sc->dc_cdata.dc_tx_prod;
while (sc->dc_cdata.dc_tx_chain[idx] == NULL) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
if (sc->dc_flags & DC_TX_COALESCE &&
(m_head->m_next != NULL ||
sc->dc_flags & DC_TX_ALIGN)) {
m = m_defrag(m_head, M_DONTWAIT);
if (m == NULL) {
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
} else {
m_head = m;
}
}
if (dc_encap(sc, &m_head)) {
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
idx = sc->dc_cdata.dc_tx_prod;
queued++;
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
BPF_MTAP(ifp, m_head);
if (sc->dc_flags & DC_TX_ONE) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
}
if (queued > 0) {
/* Transmit */
if (!(sc->dc_flags & DC_TX_POLL))
CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF);
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
}
}
static void
dc_init(void *xsc)
{
struct dc_softc *sc = xsc;
DC_LOCK(sc);
dc_init_locked(sc);
#ifdef SRM_MEDIA
if(sc->dc_srm_media) {
struct ifreq ifr;
struct mii_data *mii;
ifr.ifr_media = sc->dc_srm_media;
sc->dc_srm_media = 0;
DC_UNLOCK(sc);
mii = device_get_softc(sc->dc_miibus);
ifmedia_ioctl(sc->dc_ifp, &ifr, &mii->mii_media, SIOCSIFMEDIA);
} else
#endif
DC_UNLOCK(sc);
}
static void
dc_init_locked(struct dc_softc *sc)
{
struct ifnet *ifp = sc->dc_ifp;
struct mii_data *mii;
DC_LOCK_ASSERT(sc);
mii = device_get_softc(sc->dc_miibus);
/*
* Cancel pending I/O and free all RX/TX buffers.
*/
dc_stop(sc);
dc_reset(sc);
/*
* Set cache alignment and burst length.
*/
if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc))
CSR_WRITE_4(sc, DC_BUSCTL, 0);
else
CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME | DC_BUSCTL_MRLE);
/*
* Evenly share the bus between receive and transmit process.
*/
if (DC_IS_INTEL(sc))
DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION);
if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) {
DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA);
} else {
DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG);
}
if (sc->dc_flags & DC_TX_POLL)
DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1);
switch(sc->dc_cachesize) {
case 32:
DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG);
break;
case 16:
DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG);
break;
case 8:
DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG);
break;
case 0:
default:
DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE);
break;
}
if (sc->dc_flags & DC_TX_STORENFWD)
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
else {
if (sc->dc_txthresh > DC_TXTHRESH_MAX) {
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
} else {
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh);
}
}
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC);
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF);
if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) {
/*
* The app notes for the 98713 and 98715A say that
* in order to have the chips operate properly, a magic
* number must be written to CSR16. Macronix does not
* document the meaning of these bits so there's no way
* to know exactly what they do. The 98713 has a magic
* number all its own; the rest all use a different one.
*/
DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000);
if (sc->dc_type == DC_TYPE_98713)
DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713);
else
DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715);
}
if (DC_IS_XIRCOM(sc)) {
/*
* setup General Purpose Port mode and data so the tulip
* can talk to the MII.
*/
CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN |
DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT);
DELAY(10);
CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN |
DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT);
DELAY(10);
}
DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH);
DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN);
/* Init circular RX list. */
if (dc_list_rx_init(sc) == ENOBUFS) {
if_printf(ifp,
"initialization failed: no memory for rx buffers\n");
dc_stop(sc);
return;
}
/*
* Init TX descriptors.
*/
dc_list_tx_init(sc);
/*
* Load the address of the RX list.
*/
CSR_WRITE_4(sc, DC_RXADDR, DC_RXDESC(sc, 0));
CSR_WRITE_4(sc, DC_TXADDR, DC_TXDESC(sc, 0));
/*
* Enable interrupts.
*/
#ifdef DEVICE_POLLING
/*
* ... but only if we are not polling, and make sure they are off in
* the case of polling. Some cards (e.g. fxp) turn interrupts on
* after a reset.
*/
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
else
#endif
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF);
/* Enable transmitter. */
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON);
/*
* If this is an Intel 21143 and we're not using the
* MII port, program the LED control pins so we get
* link and activity indications.
*/
if (sc->dc_flags & DC_TULIP_LEDS) {
CSR_WRITE_4(sc, DC_WATCHDOG,
DC_WDOG_CTLWREN | DC_WDOG_LINK | DC_WDOG_ACTIVITY);
CSR_WRITE_4(sc, DC_WATCHDOG, 0);
}
/*
* Load the RX/multicast filter. We do this sort of late
* because the filter programming scheme on the 21143 and
* some clones requires DMAing a setup frame via the TX
* engine, and we need the transmitter enabled for that.
*/
dc_setfilt(sc);
/* Enable receiver. */
DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON);
CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF);
mii_mediachg(mii);
dc_setcfg(sc, sc->dc_if_media);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
/* Don't start the ticker if this is a homePNA link. */
if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1)
sc->dc_link = 1;
else {
if (sc->dc_flags & DC_21143_NWAY)
callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc);
else
callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc);
}
}
/*
* Set media options.
*/
static int
dc_ifmedia_upd(struct ifnet *ifp)
{
struct dc_softc *sc;
struct mii_data *mii;
struct ifmedia *ifm;
sc = ifp->if_softc;
mii = device_get_softc(sc->dc_miibus);
DC_LOCK(sc);
mii_mediachg(mii);
ifm = &mii->mii_media;
if (DC_IS_DAVICOM(sc) &&
IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
dc_setcfg(sc, ifm->ifm_media);
else
sc->dc_link = 0;
DC_UNLOCK(sc);
return (0);
}
/*
* Report current media status.
*/
static void
dc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct dc_softc *sc;
struct mii_data *mii;
struct ifmedia *ifm;
sc = ifp->if_softc;
mii = device_get_softc(sc->dc_miibus);
DC_LOCK(sc);
mii_pollstat(mii);
ifm = &mii->mii_media;
if (DC_IS_DAVICOM(sc)) {
if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) {
ifmr->ifm_active = ifm->ifm_media;
ifmr->ifm_status = 0;
return;
}
}
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
DC_UNLOCK(sc);
}
static int
dc_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct dc_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
struct mii_data *mii;
int error = 0;
switch (command) {
case SIOCSIFFLAGS:
DC_LOCK(sc);
if (ifp->if_flags & IFF_UP) {
int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) &
(IFF_PROMISC | IFF_ALLMULTI);
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
if (need_setfilt)
dc_setfilt(sc);
} else {
sc->dc_txthresh = 0;
dc_init_locked(sc);
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
dc_stop(sc);
}
sc->dc_if_flags = ifp->if_flags;
DC_UNLOCK(sc);
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
DC_LOCK(sc);
dc_setfilt(sc);
DC_UNLOCK(sc);
error = 0;
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
mii = device_get_softc(sc->dc_miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
#ifdef SRM_MEDIA
DC_LOCK(sc);
if (sc->dc_srm_media)
sc->dc_srm_media = 0;
DC_UNLOCK(sc);
#endif
break;
case SIOCSIFCAP:
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(dc_poll, ifp);
if (error)
return(error);
DC_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
ifp->if_capenable |= IFCAP_POLLING;
DC_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
DC_LOCK(sc);
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
DC_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
break;
}
return (error);
}
static void
dc_watchdog(struct ifnet *ifp)
{
struct dc_softc *sc;
sc = ifp->if_softc;
DC_LOCK(sc);
ifp->if_oerrors++;
if_printf(ifp, "watchdog timeout\n");
dc_stop(sc);
dc_reset(sc);
dc_init_locked(sc);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
dc_start_locked(ifp);
DC_UNLOCK(sc);
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
dc_stop(struct dc_softc *sc)
{
struct ifnet *ifp;
struct dc_list_data *ld;
struct dc_chain_data *cd;
int i;
u_int32_t ctl;
DC_LOCK_ASSERT(sc);
ifp = sc->dc_ifp;
ifp->if_timer = 0;
ld = sc->dc_ldata;
cd = &sc->dc_cdata;
callout_stop(&sc->dc_stat_ch);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON | DC_NETCFG_TX_ON));
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
CSR_WRITE_4(sc, DC_TXADDR, 0x00000000);
CSR_WRITE_4(sc, DC_RXADDR, 0x00000000);
sc->dc_link = 0;
/*
* Free data in the RX lists.
*/
for (i = 0; i < DC_RX_LIST_CNT; i++) {
if (cd->dc_rx_chain[i] != NULL) {
m_freem(cd->dc_rx_chain[i]);
cd->dc_rx_chain[i] = NULL;
}
}
bzero(&ld->dc_rx_list, sizeof(ld->dc_rx_list));
/*
* Free the TX list buffers.
*/
for (i = 0; i < DC_TX_LIST_CNT; i++) {
if (cd->dc_tx_chain[i] != NULL) {
ctl = le32toh(ld->dc_tx_list[i].dc_ctl);
if ((ctl & DC_TXCTL_SETUP) ||
!(ctl & DC_TXCTL_LASTFRAG)) {
cd->dc_tx_chain[i] = NULL;
continue;
}
bus_dmamap_unload(sc->dc_mtag, cd->dc_tx_map[i]);
m_freem(cd->dc_tx_chain[i]);
cd->dc_tx_chain[i] = NULL;
}
}
bzero(&ld->dc_tx_list, sizeof(ld->dc_tx_list));
}
/*
* Device suspend routine. Stop the interface and save some PCI
* settings in case the BIOS doesn't restore them properly on
* resume.
*/
static int
dc_suspend(device_t dev)
{
struct dc_softc *sc;
sc = device_get_softc(dev);
DC_LOCK(sc);
dc_stop(sc);
sc->suspended = 1;
DC_UNLOCK(sc);
return (0);
}
/*
* Device resume routine. Restore some PCI settings in case the BIOS
* doesn't, re-enable busmastering, and restart the interface if
* appropriate.
*/
static int
dc_resume(device_t dev)
{
struct dc_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
ifp = sc->dc_ifp;
/* reinitialize interface if necessary */
DC_LOCK(sc);
if (ifp->if_flags & IFF_UP)
dc_init_locked(sc);
sc->suspended = 0;
DC_UNLOCK(sc);
return (0);
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
static void
dc_shutdown(device_t dev)
{
struct dc_softc *sc;
sc = device_get_softc(dev);
DC_LOCK(sc);
dc_stop(sc);
DC_UNLOCK(sc);
}
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