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NetBSD/sys/dev/ic/rtl81x9.c

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/* $NetBSD: rtl81x9.c,v 1.16 2000/10/15 19:59:22 thorpej Exp $ */
/*
* Copyright (c) 1997, 1998
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* FreeBSD Id: if_rl.c,v 1.17 1999/06/19 20:17:37 wpaul Exp
*/
/*
* RealTek 8129/8139 PCI NIC driver
*
* Supports several extremely cheap PCI 10/100 adapters based on
* the RealTek chipset. Datasheets can be obtained from
* www.realtek.com.tw.
*
* Written by Bill Paul <wpaul@ctr.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* The RealTek 8139 PCI NIC redefines the meaning of 'low end.' This is
* probably the worst PCI ethernet controller ever made, with the possible
* exception of the FEAST chip made by SMC. The 8139 supports bus-master
* DMA, but it has a terrible interface that nullifies any performance
* gains that bus-master DMA usually offers.
*
* For transmission, the chip offers a series of four TX descriptor
* registers. Each transmit frame must be in a contiguous buffer, aligned
* on a longword (32-bit) boundary. This means we almost always have to
* do mbuf copies in order to transmit a frame, except in the unlikely
* case where a) the packet fits into a single mbuf, and b) the packet
* is 32-bit aligned within the mbuf's data area. The presence of only
* four descriptor registers means that we can never have more than four
* packets queued for transmission at any one time.
*
* Reception is not much better. The driver has to allocate a single large
* buffer area (up to 64K in size) into which the chip will DMA received
* frames. Because we don't know where within this region received packets
* will begin or end, we have no choice but to copy data from the buffer
* area into mbufs in order to pass the packets up to the higher protocol
* levels.
*
* It's impossible given this rotten design to really achieve decent
* performance at 100Mbps, unless you happen to have a 400Mhz PII or
* some equally overmuscled CPU to drive it.
*
* On the bright side, the 8139 does have a built-in PHY, although
* rather than using an MDIO serial interface like most other NICs, the
* PHY registers are directly accessible through the 8139's register
* space. The 8139 supports autonegotiation, as well as a 64-bit multicast
* filter.
*
* The 8129 chip is an older version of the 8139 that uses an external PHY
* chip. The 8129 has a serial MDIO interface for accessing the MII where
* the 8139 lets you directly access the on-board PHY registers. We need
* to select which interface to use depending on the chip type.
*/
#include "opt_inet.h"
#include "opt_ns.h"
#include "bpfilter.h"
#include "rnd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/device.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_ether.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <machine/bus.h>
#include <machine/endian.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/ic/rtl81x9reg.h>
#include <dev/ic/rtl81x9var.h>
#if defined DEBUG
#define STATIC
#else
#define STATIC static
#endif
STATIC void rtk_reset __P((struct rtk_softc *));
STATIC void rtk_rxeof __P((struct rtk_softc *));
STATIC void rtk_txeof __P((struct rtk_softc *));
STATIC void rtk_start __P((struct ifnet *));
STATIC int rtk_ioctl __P((struct ifnet *, u_long, caddr_t));
STATIC int rtk_init __P((struct ifnet *));
STATIC void rtk_stop __P((struct ifnet *, int));
STATIC void rtk_watchdog __P((struct ifnet *));
STATIC void rtk_shutdown __P((void *));
STATIC int rtk_ifmedia_upd __P((struct ifnet *));
STATIC void rtk_ifmedia_sts __P((struct ifnet *, struct ifmediareq *));
STATIC u_int16_t rtk_read_eeprom __P((struct rtk_softc *, int, int));
STATIC void rtk_eeprom_putbyte __P((struct rtk_softc *, int, int));
STATIC void rtk_mii_sync __P((struct rtk_softc *));
STATIC void rtk_mii_send __P((struct rtk_softc *, u_int32_t, int));
STATIC int rtk_mii_readreg __P((struct rtk_softc *, struct rtk_mii_frame *));
STATIC int rtk_mii_writereg __P((struct rtk_softc *, struct rtk_mii_frame *));
STATIC int rtk_phy_readreg __P((struct device *, int, int));
STATIC void rtk_phy_writereg __P((struct device *, int, int, int));
STATIC void rtk_phy_statchg __P((struct device *));
STATIC void rtk_tick __P((void *));
STATIC int rtk_enable __P((struct rtk_softc *));
STATIC void rtk_disable __P((struct rtk_softc *));
STATIC void rtk_power __P((int, void *));
STATIC void rtk_setmulti __P((struct rtk_softc *));
STATIC int rtk_list_tx_init __P((struct rtk_softc *));
#define EE_SET(x) \
CSR_WRITE_1(sc, RTK_EECMD, \
CSR_READ_1(sc, RTK_EECMD) | (x))
#define EE_CLR(x) \
CSR_WRITE_1(sc, RTK_EECMD, \
CSR_READ_1(sc, RTK_EECMD) & ~(x))
/*
* Send a read command and address to the EEPROM, check for ACK.
*/
STATIC void rtk_eeprom_putbyte(sc, addr, addr_len)
struct rtk_softc *sc;
int addr, addr_len;
{
int d, i;
d = (RTK_EECMD_READ << addr_len) | addr;
/*
* Feed in each bit and stobe the clock.
*/
for (i = RTK_EECMD_LEN + addr_len - 1; i >= 0; i--) {
if (d & (1 << i)) {
EE_SET(RTK_EE_DATAIN);
} else {
EE_CLR(RTK_EE_DATAIN);
}
DELAY(100);
EE_SET(RTK_EE_CLK);
DELAY(150);
EE_CLR(RTK_EE_CLK);
DELAY(100);
}
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
*/
u_int16_t rtk_read_eeprom(sc, addr, addr_len)
struct rtk_softc *sc;
int addr, addr_len;
{
u_int16_t word = 0;
int i;
/* Enter EEPROM access mode. */
CSR_WRITE_1(sc, RTK_EECMD, RTK_EEMODE_PROGRAM|RTK_EE_SEL);
/*
* Send address of word we want to read.
*/
rtk_eeprom_putbyte(sc, addr, addr_len);
CSR_WRITE_1(sc, RTK_EECMD, RTK_EEMODE_PROGRAM|RTK_EE_SEL);
/*
* Start reading bits from EEPROM.
*/
for (i = 15; i >= 0; i--) {
EE_SET(RTK_EE_CLK);
DELAY(100);
if (CSR_READ_1(sc, RTK_EECMD) & RTK_EE_DATAOUT)
word |= (1 << i);
EE_CLR(RTK_EE_CLK);
DELAY(100);
}
/* Turn off EEPROM access mode. */
CSR_WRITE_1(sc, RTK_EECMD, RTK_EEMODE_OFF);
return (word);
}
/*
* MII access routines are provided for the 8129, which
* doesn't have a built-in PHY. For the 8139, we fake things
* up by diverting rtk_phy_readreg()/rtk_phy_writereg() to the
* direct access PHY registers.
*/
#define MII_SET(x) \
CSR_WRITE_1(sc, RTK_MII, \
CSR_READ_1(sc, RTK_MII) | (x))
#define MII_CLR(x) \
CSR_WRITE_1(sc, RTK_MII, \
CSR_READ_1(sc, RTK_MII) & ~(x))
/*
* Sync the PHYs by setting data bit and strobing the clock 32 times.
*/
STATIC void rtk_mii_sync(sc)
struct rtk_softc *sc;
{
int i;
MII_SET(RTK_MII_DIR|RTK_MII_DATAOUT);
for (i = 0; i < 32; i++) {
MII_SET(RTK_MII_CLK);
DELAY(1);
MII_CLR(RTK_MII_CLK);
DELAY(1);
}
return;
}
/*
* Clock a series of bits through the MII.
*/
STATIC void rtk_mii_send(sc, bits, cnt)
struct rtk_softc *sc;
u_int32_t bits;
int cnt;
{
int i;
MII_CLR(RTK_MII_CLK);
for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
if (bits & i) {
MII_SET(RTK_MII_DATAOUT);
} else {
MII_CLR(RTK_MII_DATAOUT);
}
DELAY(1);
MII_CLR(RTK_MII_CLK);
DELAY(1);
MII_SET(RTK_MII_CLK);
}
}
/*
* Read an PHY register through the MII.
*/
STATIC int rtk_mii_readreg(sc, frame)
struct rtk_softc *sc;
struct rtk_mii_frame *frame;
{
int i, ack, s;
s = splnet();
/*
* Set up frame for RX.
*/
frame->mii_stdelim = RTK_MII_STARTDELIM;
frame->mii_opcode = RTK_MII_READOP;
frame->mii_turnaround = 0;
frame->mii_data = 0;
CSR_WRITE_2(sc, RTK_MII, 0);
/*
* Turn on data xmit.
*/
MII_SET(RTK_MII_DIR);
rtk_mii_sync(sc);
/*
* Send command/address info.
*/
rtk_mii_send(sc, frame->mii_stdelim, 2);
rtk_mii_send(sc, frame->mii_opcode, 2);
rtk_mii_send(sc, frame->mii_phyaddr, 5);
rtk_mii_send(sc, frame->mii_regaddr, 5);
/* Idle bit */
MII_CLR((RTK_MII_CLK|RTK_MII_DATAOUT));
DELAY(1);
MII_SET(RTK_MII_CLK);
DELAY(1);
/* Turn off xmit. */
MII_CLR(RTK_MII_DIR);
/* Check for ack */
MII_CLR(RTK_MII_CLK);
DELAY(1);
MII_SET(RTK_MII_CLK);
DELAY(1);
ack = CSR_READ_2(sc, RTK_MII) & RTK_MII_DATAIN;
/*
* 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++) {
MII_CLR(RTK_MII_CLK);
DELAY(1);
MII_SET(RTK_MII_CLK);
DELAY(1);
}
goto fail;
}
for (i = 0x8000; i; i >>= 1) {
MII_CLR(RTK_MII_CLK);
DELAY(1);
if (!ack) {
if (CSR_READ_2(sc, RTK_MII) & RTK_MII_DATAIN)
frame->mii_data |= i;
DELAY(1);
}
MII_SET(RTK_MII_CLK);
DELAY(1);
}
fail:
MII_CLR(RTK_MII_CLK);
DELAY(1);
MII_SET(RTK_MII_CLK);
DELAY(1);
splx(s);
if (ack)
return(1);
return(0);
}
/*
* Write to a PHY register through the MII.
*/
STATIC int rtk_mii_writereg(sc, frame)
struct rtk_softc *sc;
struct rtk_mii_frame *frame;
{
int s;
s = splnet();
/*
* Set up frame for TX.
*/
frame->mii_stdelim = RTK_MII_STARTDELIM;
frame->mii_opcode = RTK_MII_WRITEOP;
frame->mii_turnaround = RTK_MII_TURNAROUND;
/*
* Turn on data output.
*/
MII_SET(RTK_MII_DIR);
rtk_mii_sync(sc);
rtk_mii_send(sc, frame->mii_stdelim, 2);
rtk_mii_send(sc, frame->mii_opcode, 2);
rtk_mii_send(sc, frame->mii_phyaddr, 5);
rtk_mii_send(sc, frame->mii_regaddr, 5);
rtk_mii_send(sc, frame->mii_turnaround, 2);
rtk_mii_send(sc, frame->mii_data, 16);
/* Idle bit. */
MII_SET(RTK_MII_CLK);
DELAY(1);
MII_CLR(RTK_MII_CLK);
DELAY(1);
/*
* Turn off xmit.
*/
MII_CLR(RTK_MII_DIR);
splx(s);
return(0);
}
STATIC int rtk_phy_readreg(self, phy, reg)
struct device *self;
int phy, reg;
{
struct rtk_softc *sc = (void *)self;
struct rtk_mii_frame frame;
u_int16_t rval = 0;
u_int16_t rtk8139_reg = 0;
if (sc->rtk_type == RTK_8139) {
if (phy != 7)
return (0);
switch(reg) {
case MII_BMCR:
rtk8139_reg = RTK_BMCR;
break;
case MII_BMSR:
rtk8139_reg = RTK_BMSR;
break;
case MII_ANAR:
rtk8139_reg = RTK_ANAR;
break;
case MII_ANER:
rtk8139_reg = RTK_ANER;
break;
case MII_ANLPAR:
rtk8139_reg = RTK_LPAR;
break;
default:
#if 0
printf("%s: bad phy register\n", sc->sc_dev.dv_xname);
#endif
return(0);
}
rval = CSR_READ_2(sc, rtk8139_reg);
return(rval);
}
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = phy;
frame.mii_regaddr = reg;
rtk_mii_readreg(sc, &frame);
return(frame.mii_data);
}
STATIC void rtk_phy_writereg(self, phy, reg, data)
struct device *self;
int phy, reg;
int data;
{
struct rtk_softc *sc = (void *)self;
struct rtk_mii_frame frame;
u_int16_t rtk8139_reg = 0;
if (sc->rtk_type == RTK_8139) {
if (phy != 7)
return;
switch(reg) {
case MII_BMCR:
rtk8139_reg = RTK_BMCR;
break;
case MII_BMSR:
rtk8139_reg = RTK_BMSR;
break;
case MII_ANAR:
rtk8139_reg = RTK_ANAR;
break;
case MII_ANER:
rtk8139_reg = RTK_ANER;
break;
case MII_ANLPAR:
rtk8139_reg = RTK_LPAR;
break;
default:
#if 0
printf("%s: bad phy register\n", sc->sc_dev.dv_xname);
#endif
return;
}
CSR_WRITE_2(sc, rtk8139_reg, data);
return;
}
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = phy;
frame.mii_regaddr = reg;
frame.mii_data = data;
rtk_mii_writereg(sc, &frame);
return;
}
STATIC void
rtk_phy_statchg(v)
struct device *v;
{
/* Nothing to do. */
}
#define rtk_calchash(addr) \
(ether_crc32_be((addr), ETHER_ADDR_LEN) >> 26)
/*
* Program the 64-bit multicast hash filter.
*/
STATIC void rtk_setmulti(sc)
struct rtk_softc *sc;
{
struct ifnet *ifp;
int h = 0;
u_int32_t hashes[2] = { 0, 0 };
u_int32_t rxfilt;
int mcnt = 0;
struct ether_multi *enm;
struct ether_multistep step;
ifp = &sc->ethercom.ec_if;
rxfilt = CSR_READ_4(sc, RTK_RXCFG);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
rxfilt |= RTK_RXCFG_RX_MULTI;
CSR_WRITE_4(sc, RTK_RXCFG, rxfilt);
CSR_WRITE_4(sc, RTK_MAR0, 0xFFFFFFFF);
CSR_WRITE_4(sc, RTK_MAR4, 0xFFFFFFFF);
return;
}
/* first, zot all the existing hash bits */
CSR_WRITE_4(sc, RTK_MAR0, 0);
CSR_WRITE_4(sc, RTK_MAR4, 0);
/* now program new ones */
ETHER_FIRST_MULTI(step, &sc->ethercom, enm);
while (enm != NULL) {
if (memcmp(enm->enm_addrlo, enm->enm_addrhi,
ETHER_ADDR_LEN) != 0)
continue;
h = rtk_calchash(enm->enm_addrlo);
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
mcnt++;
ETHER_NEXT_MULTI(step, enm);
}
if (mcnt)
rxfilt |= RTK_RXCFG_RX_MULTI;
else
rxfilt &= ~RTK_RXCFG_RX_MULTI;
CSR_WRITE_4(sc, RTK_RXCFG, rxfilt);
CSR_WRITE_4(sc, RTK_MAR0, hashes[0]);
CSR_WRITE_4(sc, RTK_MAR4, hashes[1]);
return;
}
void rtk_reset(sc)
struct rtk_softc *sc;
{
int i;
CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_RESET);
for (i = 0; i < RTK_TIMEOUT; i++) {
DELAY(10);
if (!(CSR_READ_1(sc, RTK_COMMAND) & RTK_CMD_RESET))
break;
}
if (i == RTK_TIMEOUT)
printf("%s: reset never completed!\n", sc->sc_dev.dv_xname);
return;
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
void
rtk_attach(sc)
struct rtk_softc *sc;
{
struct ifnet *ifp;
u_int16_t val;
u_int8_t eaddr[ETHER_ADDR_LEN];
int error;
int i,addr_len;
callout_init(&sc->rtk_tick_ch);
/*
* Check EEPROM type 9346 or 9356.
*/
if (rtk_read_eeprom(sc, RTK_EE_ID, RTK_EEADDR_LEN1) == 0x8129)
addr_len = RTK_EEADDR_LEN1;
else
addr_len = RTK_EEADDR_LEN0;
/*
* Get station address.
*/
val = rtk_read_eeprom(sc, RTK_EE_EADDR0, addr_len);
eaddr[0] = val & 0xff;
eaddr[1] = val >> 8;
val = rtk_read_eeprom(sc, RTK_EE_EADDR1, addr_len);
eaddr[2] = val & 0xff;
eaddr[3] = val >> 8;
val = rtk_read_eeprom(sc, RTK_EE_EADDR2, addr_len);
eaddr[4] = val & 0xff;
eaddr[5] = val >> 8;
if ((error = bus_dmamem_alloc(sc->sc_dmat,
RTK_RXBUFLEN + 32, NBPG, 0, &sc->sc_dmaseg, 1, &sc->sc_dmanseg,
BUS_DMA_NOWAIT)) != 0) {
printf("%s: can't allocate recv buffer, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_0;
}
if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_dmaseg, sc->sc_dmanseg,
RTK_RXBUFLEN + 32, (caddr_t *)&sc->rtk_cdata.rtk_rx_buf,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
printf("%s: can't map recv buffer, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_1;
}
/* Leave a few bytes before the start of the RX ring buffer. */
sc->rtk_cdata.rtk_rx_buf_ptr = sc->rtk_cdata.rtk_rx_buf;
sc->rtk_cdata.rtk_rx_buf += sizeof(u_int64_t);
if ((error = bus_dmamap_create(sc->sc_dmat,
RTK_RXBUFLEN + 32 - sizeof(u_int64_t), 1,
RTK_RXBUFLEN + 32 - sizeof(u_int64_t), 0, BUS_DMA_NOWAIT,
&sc->recv_dmamap)) != 0) {
printf("%s: can't create recv buffer DMA map, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_2;
}
if ((error = bus_dmamap_load(sc->sc_dmat, sc->recv_dmamap,
sc->rtk_cdata.rtk_rx_buf, RTK_RXBUFLEN + 32 - sizeof(u_int64_t),
NULL, BUS_DMA_NOWAIT)) != 0) {
printf("%s: can't load recv buffer DMA map, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_3;
}
for (i = 0; i < RTK_TX_LIST_CNT; i++)
if ((error = bus_dmamap_create(sc->sc_dmat,
MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT,
&sc->snd_dmamap[i])) != 0) {
printf("%s: can't create snd buffer DMA map,"
" error = %d\n", sc->sc_dev.dv_xname, error);
goto fail_4;
}
/*
* From this point forward, the attachment cannot fail. A failure
* before this releases all resources thar may have been
* allocated.
*/
sc->sc_flags |= RTK_ATTACHED;
/* Reset the adapter. */
rtk_reset(sc);
printf("%s: Ethernet address %s\n", sc->sc_dev.dv_xname,
ether_sprintf(eaddr));
ifp = &sc->ethercom.ec_if;
ifp->if_softc = sc;
bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = rtk_ioctl;
ifp->if_start = rtk_start;
ifp->if_watchdog = rtk_watchdog;
ifp->if_init = rtk_init;
ifp->if_stop = rtk_stop;
/*
* Do ifmedia setup.
*/
sc->mii.mii_ifp = ifp;
sc->mii.mii_readreg = rtk_phy_readreg;
sc->mii.mii_writereg = rtk_phy_writereg;
sc->mii.mii_statchg = rtk_phy_statchg;
ifmedia_init(&sc->mii.mii_media, 0, rtk_ifmedia_upd, rtk_ifmedia_sts);
mii_attach(&sc->sc_dev, &sc->mii, 0xffffffff,
MII_PHY_ANY, MII_OFFSET_ANY, 0);
/* Choose a default media. */
if (LIST_FIRST(&sc->mii.mii_phys) == NULL) {
ifmedia_add(&sc->mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(&sc->mii.mii_media, IFM_ETHER|IFM_NONE);
} else {
ifmedia_set(&sc->mii.mii_media, IFM_ETHER|IFM_AUTO);
}
/*
* Call MI attach routines.
*/
if_attach(ifp);
ether_ifattach(ifp, eaddr);
#if NBPFILTER > 0
bpfattach(&sc->ethercom.ec_if.if_bpf, ifp, DLT_EN10MB,
sizeof(struct ether_header));
#endif
/*
* Make sure the interface is shutdown during reboot.
*/
sc->sc_sdhook = shutdownhook_establish(rtk_shutdown, sc);
if (sc->sc_sdhook == NULL)
printf("%s: WARNING: unbale to establish shutdown hook\n",
sc->sc_dev.dv_xname);
/*
* Add a suspend hook to make sure we come back up after a
* resume.
*/
sc->sc_powerhook = powerhook_establish(rtk_power, sc);
if (sc->sc_powerhook == NULL)
printf("%s: WARNING: unable to establish power hook\n",
sc->sc_dev.dv_xname);
return;
fail_4:
for (i = 0; i < RTK_TX_LIST_CNT; i++)
if (sc->snd_dmamap[i] != NULL)
bus_dmamap_destroy(sc->sc_dmat, sc->snd_dmamap[i]);
fail_3:
bus_dmamap_destroy(sc->sc_dmat, sc->recv_dmamap);
fail_2:
bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->rtk_cdata.rtk_rx_buf_ptr,
RTK_RXBUFLEN + 32 - sizeof(u_int64_t));
fail_1:
bus_dmamem_free(sc->sc_dmat, &sc->sc_dmaseg, sc->sc_dmanseg);
fail_0:
return;
}
/*
* Initialize the transmit descriptors.
*/
STATIC int rtk_list_tx_init(sc)
struct rtk_softc *sc;
{
struct rtk_chain_data *cd;
int i;
cd = &sc->rtk_cdata;
for (i = 0; i < RTK_TX_LIST_CNT; i++) {
cd->rtk_tx_chain[i] = NULL;
CSR_WRITE_4(sc,
RTK_TXADDR0 + (i * sizeof(u_int32_t)), 0x0000000);
}
sc->rtk_cdata.cur_tx = 0;
sc->rtk_cdata.last_tx = 0;
return(0);
}
/*
* rtk_activate:
* Handle device activation/deactivation requests.
*/
int
rtk_activate(self, act)
struct device *self;
enum devact act;
{
struct rtk_softc *sc = (void *) self;
int s, error = 0;
s = splnet();
switch (act) {
case DVACT_ACTIVATE:
error = EOPNOTSUPP;
break;
case DVACT_DEACTIVATE:
mii_activate(&sc->mii, act, MII_PHY_ANY, MII_OFFSET_ANY);
if_deactivate(&sc->ethercom.ec_if);
break;
}
splx(s);
return (error);
}
/*
* rtk_detach:
* Detach a rtk interface.
*/
int
rtk_detach(sc)
struct rtk_softc *sc;
{
struct ifnet *ifp = &sc->ethercom.ec_if;
int i;
/*
* Succeed now if thereisn't any work to do.
*/
if ((sc->sc_flags & RTK_ATTACHED) == 0)
return (0);
/* Unhook our tick handler. */
callout_stop(&sc->rtk_tick_ch);
/* Detach all PHYs. */
mii_detach(&sc->mii, MII_PHY_ANY, MII_OFFSET_ANY);
/* Delete all remaining media. */
ifmedia_delete_instance(&sc->mii.mii_media, IFM_INST_ANY);
#if NBPFILTER > 0
bpfdetach(ifp);
#endif
ether_ifdetach(ifp);
if_detach(ifp);
for (i = 0; i < RTK_TX_LIST_CNT; i++)
if (sc->snd_dmamap[i] != NULL)
bus_dmamap_destroy(sc->sc_dmat, sc->snd_dmamap[i]);
bus_dmamap_destroy(sc->sc_dmat, sc->recv_dmamap);
bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->rtk_cdata.rtk_rx_buf_ptr,
RTK_RXBUFLEN + 32 - sizeof(u_int64_t));
shutdownhook_disestablish(sc->sc_sdhook);
powerhook_disestablish(sc->sc_powerhook);
return (0);
}
/*
* rtk_enable:
* Enable the RTL81X9 chip.
*/
int
rtk_enable(sc)
struct rtk_softc *sc;
{
if (RTK_IS_ENABLED(sc) == 0 && sc->sc_enable != NULL) {
if ((*sc->sc_enable)(sc) != 0) {
printf("%s: device enable failed\n",
sc->sc_dev.dv_xname);
return(EIO);
}
sc->sc_flags |= RTK_ENABLED;
}
return (0);
}
/*
* rtk_disable:
* Disable the RTL81X9 chip.
*/
void
rtk_disable(sc)
struct rtk_softc *sc;
{
if (RTK_IS_ENABLED(sc) && sc->sc_disable != NULL) {
(*sc->sc_disable)(sc);
sc->sc_flags &= ~RTK_ENABLED;
}
}
/*
* rtk_power:
* Power management (suspend/resume) hook.
*/
void
rtk_power(why, arg)
int why;
void *arg;
{
struct rtk_softc *sc = (void *) arg;
struct ifnet *ifp = &sc->ethercom.ec_if;
int s;
s = splnet();
if (why != PWR_RESUME) {
rtk_stop(ifp, 0);
if (sc->sc_power != NULL)
(*sc->sc_power)(sc, why);
} else if (ifp->if_flags & IFF_UP) {
if (sc->sc_power != NULL)
(*sc->sc_power)(sc, why);
rtk_init(ifp);
}
splx(s);
}
/*
* A frame has been uploaded: pass the resulting mbuf chain up to
* the higher level protocols.
*
* You know there's something wrong with a PCI bus-master chip design
* when you have to use m_devget().
*
* The receive operation is badly documented in the datasheet, so I'll
* attempt to document it here. The driver provides a buffer area and
* places its base address in the RX buffer start address register.
* The chip then begins copying frames into the RX buffer. Each frame
* is preceeded by a 32-bit RX status word which specifies the length
* of the frame and certain other status bits. Each frame (starting with
* the status word) is also 32-bit aligned. The frame length is in the
* first 16 bits of the status word; the lower 15 bits correspond with
* the 'rx status register' mentioned in the datasheet.
*
* Note: to make the Alpha happy, the frame payload needs to be aligned
* on a 32-bit boundary. To achieve this, we cheat a bit by copying from
* the ring buffer starting at an address two bytes before the actual
* data location. We can then shave off the first two bytes using m_adj().
* The reason we do this is because m_devget() doesn't let us specify an
* offset into the mbuf storage space, so we have to artificially create
* one. The ring is allocated in such a way that there are a few unused
* bytes of space preceecing it so that it will be safe for us to do the
* 2-byte backstep even if reading from the ring at offset 0.
*/
STATIC void rtk_rxeof(sc)
struct rtk_softc *sc;
{
struct mbuf *m;
struct ifnet *ifp;
int total_len = 0;
u_int32_t rxstat;
caddr_t rxbufpos;
int wrap = 0;
u_int16_t cur_rx;
u_int16_t limit;
u_int16_t rx_bytes = 0, max_bytes;
ifp = &sc->ethercom.ec_if;
cur_rx = (CSR_READ_2(sc, RTK_CURRXADDR) + 16) % RTK_RXBUFLEN;
/* Do not try to read past this point. */
limit = CSR_READ_2(sc, RTK_CURRXBUF) % RTK_RXBUFLEN;
if (limit < cur_rx)
max_bytes = (RTK_RXBUFLEN - cur_rx) + limit;
else
max_bytes = limit - cur_rx;
while((CSR_READ_1(sc, RTK_COMMAND) & RTK_CMD_EMPTY_RXBUF) == 0) {
rxbufpos = sc->rtk_cdata.rtk_rx_buf + cur_rx;
bus_dmamap_sync(sc->sc_dmat, sc->recv_dmamap, cur_rx,
sizeof(u_int32_t *), BUS_DMASYNC_POSTREAD);
rxstat = le32toh(*(u_int32_t *)rxbufpos);
bus_dmamap_sync(sc->sc_dmat, sc->recv_dmamap, cur_rx,
sizeof(u_int32_t *), BUS_DMASYNC_PREREAD);
/*
* Here's a totally undocumented fact for you. When the
* RealTek chip is in the process of copying a packet into
* RAM for you, the length will be 0xfff0. If you spot a
* packet header with this value, you need to stop. The
* datasheet makes absolutely no mention of this and
* RealTek should be shot for this.
*/
if ((u_int16_t)(rxstat >> 16) == RTK_RXSTAT_UNFINISHED)
break;
if (!(rxstat & RTK_RXSTAT_RXOK)) {
ifp->if_ierrors++;
/*
* submitted by:[netbsd-pcmcia:00484]
* Takahiro Kambe <taca@sky.yamashina.kyoto.jp>
* obtain from:
* FreeBSD if_rl.c rev 1.24->1.25
*
*/
#if 0
if (rxstat & (RTK_RXSTAT_BADSYM|RTK_RXSTAT_RUNT|
RTK_RXSTAT_GIANT|RTK_RXSTAT_CRCERR|
RTK_RXSTAT_ALIGNERR)) {
CSR_WRITE_2(sc, RTK_COMMAND, RTK_CMD_TX_ENB);
CSR_WRITE_2(sc, RTK_COMMAND, RTK_CMD_TX_ENB|
RTK_CMD_RX_ENB);
CSR_WRITE_4(sc, RTK_RXCFG, RTK_RXCFG_CONFIG);
CSR_WRITE_4(sc, RTK_RXADDR,
sc->recv_dmamap->dm_segs[0].ds_addr);
CSR_WRITE_2(sc, RTK_CURRXADDR, cur_rx - 16);
cur_rx = 0;
}
break;
#else
rtk_init(ifp);
return;
#endif
}
/* No errors; receive the packet. */
total_len = rxstat >> 16;
rx_bytes += total_len + 4;
/*
* Avoid trying to read more bytes than we know
* the chip has prepared for us.
*/
if (rx_bytes > max_bytes)
break;
bus_dmamap_sync(sc->sc_dmat, sc->recv_dmamap,
cur_rx + sizeof(u_int32_t), total_len,
BUS_DMASYNC_POSTREAD);
rxbufpos = sc->rtk_cdata.rtk_rx_buf +
((cur_rx + sizeof(u_int32_t)) % RTK_RXBUFLEN);
if (rxbufpos == (sc->rtk_cdata.rtk_rx_buf + RTK_RXBUFLEN))
rxbufpos = sc->rtk_cdata.rtk_rx_buf;
wrap = (sc->rtk_cdata.rtk_rx_buf + RTK_RXBUFLEN) - rxbufpos;
if (total_len > wrap) {
m = m_devget(rxbufpos - RTK_ETHER_ALIGN,
wrap + RTK_ETHER_ALIGN, 0, ifp, NULL);
if (m == NULL) {
ifp->if_ierrors++;
printf("%s: out of mbufs, tried to "
"copy %d bytes\n", sc->sc_dev.dv_xname,
wrap);
} else {
m_adj(m, RTK_ETHER_ALIGN);
m_copyback(m, wrap, total_len - wrap,
sc->rtk_cdata.rtk_rx_buf);
}
cur_rx = (total_len - wrap + ETHER_CRC_LEN);
} else {
m = m_devget(rxbufpos - RTK_ETHER_ALIGN,
total_len + RTK_ETHER_ALIGN, 0, ifp, NULL);
if (m == NULL) {
ifp->if_ierrors++;
printf("%s: out of mbufs, tried to "
"copy %d bytes\n", sc->sc_dev.dv_xname,
total_len);
} else
m_adj(m, RTK_ETHER_ALIGN);
cur_rx += total_len + 4 + ETHER_CRC_LEN;
}
/*
* Round up to 32-bit boundary.
*/
cur_rx = (cur_rx + 3) & ~3;
CSR_WRITE_2(sc, RTK_CURRXADDR, cur_rx - 16);
if (m == NULL)
continue;
/*
* The RealTek chip includes the CRC with every
* incoming packet.
*/
m->m_flags |= M_HASFCS;
ifp->if_ipackets++;
#if NBPFILTER > 0
/*
* Handle BPF listeners. Let the BPF user see the packet, but
* don't pass it up to the ether_input() layer unless it's
* a broadcast packet, multicast packet, matches our ethernet
* address or the interface is in promiscuous mode.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
/* pass it on. */
(*ifp->if_input)(ifp, m);
bus_dmamap_sync(sc->sc_dmat, sc->recv_dmamap,
cur_rx + sizeof(u_int32_t),
total_len, BUS_DMASYNC_PREREAD);
}
return;
}
/*
* A frame was downloaded to the chip. It's safe for us to clean up
* the list buffers.
*/
STATIC void rtk_txeof(sc)
struct rtk_softc *sc;
{
struct ifnet *ifp;
u_int32_t txstat;
ifp = &sc->ethercom.ec_if;
/* Clear the timeout timer. */
ifp->if_timer = 0;
/*
* Go through our tx list and free mbufs for those
* frames that have been uploaded.
*/
do {
txstat = CSR_READ_4(sc, RTK_LAST_TXSTAT(sc));
if (!(txstat & (RTK_TXSTAT_TX_OK|
RTK_TXSTAT_TX_UNDERRUN|RTK_TXSTAT_TXABRT)))
break;
bus_dmamap_sync(sc->sc_dmat,
sc->snd_dmamap[sc->rtk_cdata.last_tx], 0,
sc->snd_dmamap[sc->rtk_cdata.last_tx]->dm_mapsize,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat,
sc->snd_dmamap[sc->rtk_cdata.last_tx]);
m_freem(RTK_LAST_TXMBUF(sc));
RTK_LAST_TXMBUF(sc) = NULL;
ifp->if_collisions += (txstat & RTK_TXSTAT_COLLCNT) >> 24;
if (txstat & RTK_TXSTAT_TX_OK)
ifp->if_opackets++;
else {
ifp->if_oerrors++;
if ((txstat & RTK_TXSTAT_TXABRT) ||
(txstat & RTK_TXSTAT_OUTOFWIN))
CSR_WRITE_4(sc, RTK_TXCFG, RTK_TXCFG_CONFIG);
}
RTK_INC(sc->rtk_cdata.last_tx);
ifp->if_flags &= ~IFF_OACTIVE;
} while (sc->rtk_cdata.last_tx != sc->rtk_cdata.cur_tx);
return;
}
int rtk_intr(arg)
void *arg;
{
struct rtk_softc *sc;
struct ifnet *ifp;
u_int16_t status;
int handled = 0;
sc = arg;
ifp = &sc->ethercom.ec_if;
/* Disable interrupts. */
CSR_WRITE_2(sc, RTK_IMR, 0x0000);
for (;;) {
status = CSR_READ_2(sc, RTK_ISR);
if (status)
CSR_WRITE_2(sc, RTK_ISR, status);
handled = 1;
if ((status & RTK_INTRS) == 0)
break;
if (status & RTK_ISR_RX_OK)
rtk_rxeof(sc);
if (status & RTK_ISR_RX_ERR)
rtk_rxeof(sc);
if ((status & RTK_ISR_TX_OK) || (status & RTK_ISR_TX_ERR))
rtk_txeof(sc);
if (status & RTK_ISR_SYSTEM_ERR) {
rtk_reset(sc);
rtk_init(ifp);
}
}
/* Re-enable interrupts. */
CSR_WRITE_2(sc, RTK_IMR, RTK_INTRS);
if (ifp->if_snd.ifq_head != NULL) {
rtk_start(ifp);
}
return (handled);
}
/*
* Main transmit routine.
*/
STATIC void rtk_start(ifp)
struct ifnet *ifp;
{
struct rtk_softc *sc;
struct mbuf *m_head = NULL, *m_new;
int error, idx, len;
sc = ifp->if_softc;
while(RTK_CUR_TXMBUF(sc) == NULL) {
IF_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
idx = sc->rtk_cdata.cur_tx;
/*
* Load the DMA map. If this fails, the packet didn't
* fit in one DMA segment, and we need to copy. Note,
* the packet must also be aligned.
*/
if ((mtod(m_head, bus_addr_t) & 3) != 0 ||
bus_dmamap_load_mbuf(sc->sc_dmat, sc->snd_dmamap[idx],
m_head, BUS_DMA_NOWAIT) != 0) {
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
printf("%s: unable to allocate Tx mbuf\n",
sc->sc_dev.dv_xname);
IF_PREPEND(&ifp->if_snd, m_new);
break;
}
if (m_head->m_pkthdr.len > MHLEN) {
MCLGET(m_new, M_DONTWAIT);
if ((m_new->m_flags & M_EXT) == 0) {
printf("%s: unable to allocate Tx "
"cluster\n", sc->sc_dev.dv_xname);
m_freem(m_new);
IF_PREPEND(&ifp->if_snd, m_head);
break;
}
}
m_copydata(m_head, 0, m_head->m_pkthdr.len,
mtod(m_new, caddr_t));
m_new->m_pkthdr.len = m_new->m_len =
m_head->m_pkthdr.len;
m_freem(m_head);
m_head = m_new;
error = bus_dmamap_load_mbuf(sc->sc_dmat,
sc->snd_dmamap[idx], m_head, BUS_DMA_NOWAIT);
if (error) {
printf("%s: unable to load Tx buffer, "
"error = %d\n", sc->sc_dev.dv_xname, error);
IF_PREPEND(&ifp->if_snd, m_head);
break;
}
}
RTK_CUR_TXMBUF(sc) = m_head;
#if NBPFILTER > 0
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, RTK_CUR_TXMBUF(sc));
#endif
/*
* Transmit the frame.
*/
bus_dmamap_sync(sc->sc_dmat,
sc->snd_dmamap[idx], 0, sc->snd_dmamap[idx]->dm_mapsize,
BUS_DMASYNC_PREWRITE);
len = sc->snd_dmamap[idx]->dm_segs[0].ds_len;
if (len < (ETHER_MIN_LEN - ETHER_CRC_LEN))
len = (ETHER_MIN_LEN - ETHER_CRC_LEN);
CSR_WRITE_4(sc, RTK_CUR_TXADDR(sc),
sc->snd_dmamap[idx]->dm_segs[0].ds_addr);
CSR_WRITE_4(sc, RTK_CUR_TXSTAT(sc), RTK_TX_EARLYTHRESH | len);
RTK_INC(sc->rtk_cdata.cur_tx);
}
/*
* We broke out of the loop because all our TX slots are
* full. Mark the NIC as busy until it drains some of the
* packets from the queue.
*/
if (RTK_CUR_TXMBUF(sc) != NULL)
ifp->if_flags |= IFF_OACTIVE;
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
return;
}
STATIC int rtk_init(ifp)
struct ifnet *ifp;
{
struct rtk_softc *sc = ifp->if_softc;
int error = 0, i;
u_int32_t rxcfg;
if ((error = rtk_enable(sc)) != 0)
goto out;
/*
* Cancel pending I/O.
*/
rtk_stop(ifp, 0);
/* Init our MAC address */
for (i = 0; i < ETHER_ADDR_LEN; i++) {
CSR_WRITE_1(sc, RTK_IDR0 + i, LLADDR(ifp->if_sadl)[i]);
}
/* Init the RX buffer pointer register. */
bus_dmamap_sync(sc->sc_dmat, sc->recv_dmamap, 0,
sc->recv_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
CSR_WRITE_4(sc, RTK_RXADDR, sc->recv_dmamap->dm_segs[0].ds_addr);
/* Init TX descriptors. */
rtk_list_tx_init(sc);
/*
* Enable transmit and receive.
*/
CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_TX_ENB|RTK_CMD_RX_ENB);
/*
* Set the initial TX and RX configuration.
*/
CSR_WRITE_4(sc, RTK_TXCFG, RTK_TXCFG_CONFIG);
CSR_WRITE_4(sc, RTK_RXCFG, RTK_RXCFG_CONFIG);
/* Set the individual bit to receive frames for this host only. */
rxcfg = CSR_READ_4(sc, RTK_RXCFG);
rxcfg |= RTK_RXCFG_RX_INDIV;
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC) {
rxcfg |= RTK_RXCFG_RX_ALLPHYS;
CSR_WRITE_4(sc, RTK_RXCFG, rxcfg);
} else {
rxcfg &= ~RTK_RXCFG_RX_ALLPHYS;
CSR_WRITE_4(sc, RTK_RXCFG, rxcfg);
}
/*
* Set capture broadcast bit to capture broadcast frames.
*/
if (ifp->if_flags & IFF_BROADCAST) {
rxcfg |= RTK_RXCFG_RX_BROAD;
CSR_WRITE_4(sc, RTK_RXCFG, rxcfg);
} else {
rxcfg &= ~RTK_RXCFG_RX_BROAD;
CSR_WRITE_4(sc, RTK_RXCFG, rxcfg);
}
/*
* Program the multicast filter, if necessary.
*/
rtk_setmulti(sc);
/*
* Enable interrupts.
*/
CSR_WRITE_2(sc, RTK_IMR, RTK_INTRS);
/* Start RX/TX process. */
CSR_WRITE_4(sc, RTK_MISSEDPKT, 0);
/* Enable receiver and transmitter. */
CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_TX_ENB|RTK_CMD_RX_ENB);
CSR_WRITE_1(sc, RTK_CFG1, RTK_CFG1_DRVLOAD|RTK_CFG1_FULLDUPLEX);
/*
* Set current media.
*/
mii_mediachg(&sc->mii);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
callout_reset(&sc->rtk_tick_ch, hz, rtk_tick, sc);
out:
if (error) {
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
ifp->if_timer = 0;
printf("%s: interface not running\n", sc->sc_dev.dv_xname);
}
return (error);
}
/*
* Set media options.
*/
STATIC int rtk_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct rtk_softc *sc;
sc = ifp->if_softc;
return (mii_mediachg(&sc->mii));
}
/*
* Report current media status.
*/
STATIC void rtk_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct rtk_softc *sc;
sc = ifp->if_softc;
mii_pollstat(&sc->mii);
ifmr->ifm_status = sc->mii.mii_media_status;
ifmr->ifm_active = sc->mii.mii_media_active;
}
STATIC int rtk_ioctl(ifp, command, data)
struct ifnet *ifp;
u_long command;
caddr_t data;
{
struct rtk_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
int s, error = 0;
s = splnet();
switch (command) {
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->mii.mii_media, command);
break;
default:
error = ether_ioctl(ifp, command, data);
if (error == ENETRESET) {
if (RTK_IS_ENABLED(sc)) {
/*
* Multicast list has changed. Set the
* hardware filter accordingly.
*/
rtk_setmulti(sc);
}
error = 0;
}
break;
}
splx(s);
return(error);
}
STATIC void rtk_watchdog(ifp)
struct ifnet *ifp;
{
struct rtk_softc *sc;
sc = ifp->if_softc;
printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname);
ifp->if_oerrors++;
rtk_txeof(sc);
rtk_rxeof(sc);
rtk_init(ifp);
return;
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
STATIC void rtk_stop(ifp, disable)
struct ifnet *ifp;
int disable;
{
struct rtk_softc *sc = ifp->if_softc;
int i;
callout_stop(&sc->rtk_tick_ch);
mii_down(&sc->mii);
CSR_WRITE_1(sc, RTK_COMMAND, 0x00);
CSR_WRITE_2(sc, RTK_IMR, 0x0000);
/*
* Free the TX list buffers.
*/
for (i = 0; i < RTK_TX_LIST_CNT; i++) {
if (sc->rtk_cdata.rtk_tx_chain[i] != NULL) {
bus_dmamap_unload(sc->sc_dmat, sc->snd_dmamap[i]);
m_freem(sc->rtk_cdata.rtk_tx_chain[i]);
sc->rtk_cdata.rtk_tx_chain[i] = NULL;
CSR_WRITE_4(sc, RTK_TXADDR0 + i, 0x0000000);
}
}
if (disable)
rtk_disable(sc);
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
ifp->if_timer = 0;
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
STATIC void rtk_shutdown(vsc)
void *vsc;
{
struct rtk_softc *sc = (struct rtk_softc *)vsc;
rtk_stop(&sc->ethercom.ec_if, 0);
}
STATIC void
rtk_tick(arg)
void *arg;
{
struct rtk_softc *sc = arg;
int s = splnet();
mii_tick(&sc->mii);
splx(s);
callout_reset(&sc->rtk_tick_ch, hz, rtk_tick, sc);
}
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