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elink3.c
2191 lines (1883 loc) · 53.7 KB
/
elink3.c
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/* $NetBSD: elink3.c,v 1.114.6.2 2006/06/07 16:05:41 kardel Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 THE FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Copyright (c) 1996, 1997 Jonathan Stone <jonathan@NetBSD.org>
* Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Herb Peyerl.
* 4. The name of Herb Peyerl may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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>
__KERNEL_RCSID(0, "$NetBSD: elink3.c,v 1.114.6.2 2006/06/07 16:05:41 kardel Exp $");
#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/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/mii_bitbang.h>
#include <dev/ic/elink3var.h>
#include <dev/ic/elink3reg.h>
#ifdef DEBUG
int epdebug = 0;
#endif
/*
* XXX endian workaround for big-endian CPUs with pcmcia:
* if stream methods for bus_space_multi are not provided, define them
* using non-stream bus_space_{read,write}_multi_.
* Assumes host CPU is same endian-ness as bus.
*/
#ifndef __BUS_SPACE_HAS_STREAM_METHODS
#define bus_space_read_multi_stream_2 bus_space_read_multi_2
#define bus_space_read_multi_stream_4 bus_space_read_multi_4
#define bus_space_write_multi_stream_2 bus_space_write_multi_2
#define bus_space_write_multi_stream_4 bus_space_write_multi_4
#endif /* __BUS_SPACE_HAS_STREAM_METHODS */
/*
* Structure to map media-present bits in boards to ifmedia codes and
* printable media names. Used for table-driven ifmedia initialization.
*/
struct ep_media {
int epm_mpbit; /* media present bit */
const char *epm_name; /* name of medium */
int epm_ifmedia; /* ifmedia word for medium */
int epm_epmedia; /* ELINKMEDIA_* constant */
};
/*
* Media table for the Demon/Vortex/Boomerang chipsets.
*
* Note that MII on the Demon and Vortex (3c59x) indicates an external
* MII connector (for connecting an external PHY) ... I think. Treat
* it as `manual' on these chips.
*
* Any Boomerang (3c90x) chips with MII really do have an internal
* MII and real PHYs attached; no `native' media.
*/
const struct ep_media ep_vortex_media[] = {
{ ELINK_PCI_10BASE_T, "10baseT", IFM_ETHER|IFM_10_T,
ELINKMEDIA_10BASE_T },
{ ELINK_PCI_10BASE_T, "10baseT-FDX", IFM_ETHER|IFM_10_T|IFM_FDX,
ELINKMEDIA_10BASE_T },
{ ELINK_PCI_AUI, "10base5", IFM_ETHER|IFM_10_5,
ELINKMEDIA_AUI },
{ ELINK_PCI_BNC, "10base2", IFM_ETHER|IFM_10_2,
ELINKMEDIA_10BASE_2 },
{ ELINK_PCI_100BASE_TX, "100baseTX", IFM_ETHER|IFM_100_TX,
ELINKMEDIA_100BASE_TX },
{ ELINK_PCI_100BASE_TX, "100baseTX-FDX",IFM_ETHER|IFM_100_TX|IFM_FDX,
ELINKMEDIA_100BASE_TX },
{ ELINK_PCI_100BASE_FX, "100baseFX", IFM_ETHER|IFM_100_FX,
ELINKMEDIA_100BASE_FX },
{ ELINK_PCI_100BASE_MII,"manual", IFM_ETHER|IFM_MANUAL,
ELINKMEDIA_MII },
{ ELINK_PCI_100BASE_T4, "100baseT4", IFM_ETHER|IFM_100_T4,
ELINKMEDIA_100BASE_T4 },
{ 0, NULL, 0,
0 },
};
/*
* Media table for the older 3Com Etherlink III chipset, used
* in the 3c509, 3c579, and 3c589.
*/
const struct ep_media ep_509_media[] = {
{ ELINK_W0_CC_UTP, "10baseT", IFM_ETHER|IFM_10_T,
ELINKMEDIA_10BASE_T },
{ ELINK_W0_CC_AUI, "10base5", IFM_ETHER|IFM_10_5,
ELINKMEDIA_AUI },
{ ELINK_W0_CC_BNC, "10base2", IFM_ETHER|IFM_10_2,
ELINKMEDIA_10BASE_2 },
{ 0, NULL, 0,
0 },
};
void ep_internalconfig(struct ep_softc *sc);
void ep_vortex_probemedia(struct ep_softc *sc);
void ep_509_probemedia(struct ep_softc *sc);
static void eptxstat(struct ep_softc *);
static int epstatus(struct ep_softc *);
int epinit(struct ifnet *);
void epstop(struct ifnet *, int);
int epioctl(struct ifnet *, u_long, caddr_t);
void epstart(struct ifnet *);
void epwatchdog(struct ifnet *);
void epreset(struct ep_softc *);
static void epshutdown(void *);
void epread(struct ep_softc *);
struct mbuf *epget(struct ep_softc *, int);
void epmbuffill(void *);
void epmbufempty(struct ep_softc *);
void epsetfilter(struct ep_softc *);
void ep_roadrunner_mii_enable(struct ep_softc *);
void epsetmedia(struct ep_softc *);
/* ifmedia callbacks */
int ep_media_change(struct ifnet *ifp);
void ep_media_status(struct ifnet *ifp, struct ifmediareq *req);
/* MII callbacks */
int ep_mii_readreg(struct device *, int, int);
void ep_mii_writereg(struct device *, int, int, int);
void ep_statchg(struct device *);
void ep_tick(void *);
static int epbusyeeprom(struct ep_softc *);
u_int16_t ep_read_eeprom(struct ep_softc *, u_int16_t);
static inline void ep_reset_cmd(struct ep_softc *sc, u_int cmd, u_int arg);
static inline void ep_finish_reset(bus_space_tag_t, bus_space_handle_t);
static inline void ep_discard_rxtop(bus_space_tag_t, bus_space_handle_t);
static inline int ep_w1_reg(struct ep_softc *, int);
/*
* MII bit-bang glue.
*/
u_int32_t ep_mii_bitbang_read(struct device *);
void ep_mii_bitbang_write(struct device *, u_int32_t);
const struct mii_bitbang_ops ep_mii_bitbang_ops = {
ep_mii_bitbang_read,
ep_mii_bitbang_write,
{
PHYSMGMT_DATA, /* MII_BIT_MDO */
PHYSMGMT_DATA, /* MII_BIT_MDI */
PHYSMGMT_CLK, /* MII_BIT_MDC */
PHYSMGMT_DIR, /* MII_BIT_DIR_HOST_PHY */
0, /* MII_BIT_DIR_PHY_HOST */
}
};
/*
* Some chips (3c515 [Corkscrew] and 3c574 [RoadRunner]) have
* Window 1 registers offset!
*/
static inline int
ep_w1_reg(sc, reg)
struct ep_softc *sc;
int reg;
{
switch (sc->ep_chipset) {
case ELINK_CHIPSET_CORKSCREW:
return (reg + 0x10);
case ELINK_CHIPSET_ROADRUNNER:
switch (reg) {
case ELINK_W1_FREE_TX:
case ELINK_W1_RUNNER_RDCTL:
case ELINK_W1_RUNNER_WRCTL:
return (reg);
}
return (reg + 0x10);
}
return (reg);
}
/*
* Wait for any pending reset to complete.
* On newer hardware we could poll SC_COMMAND_IN_PROGRESS,
* but older hardware doesn't implement it and we must delay.
*/
static inline void
ep_finish_reset(iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
int i;
for (i = 0; i < 10000; i++) {
if ((bus_space_read_2(iot, ioh, ELINK_STATUS) &
COMMAND_IN_PROGRESS) == 0)
break;
DELAY(10);
}
}
/*
* Issue a (reset) command, and be sure it has completed.
* Used for global reset, TX_RESET, RX_RESET.
*/
static inline void
ep_reset_cmd(sc, cmd, arg)
struct ep_softc *sc;
u_int cmd, arg;
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
bus_space_write_2(iot, ioh, cmd, arg);
ep_finish_reset(iot, ioh);
}
static inline void
ep_discard_rxtop(iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
int i;
bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_DISCARD_TOP_PACK);
/*
* Spin for about 1 msec, to avoid forcing a DELAY() between
* every received packet (adding latency and limiting pkt-recv rate).
* On PCI, at 4 30-nsec PCI bus cycles for a read, 8000 iterations
* is about right.
*/
for (i = 0; i < 8000; i++) {
if ((bus_space_read_2(iot, ioh, ELINK_STATUS) &
COMMAND_IN_PROGRESS) == 0)
return;
}
/* Didn't complete in a hurry. Do DELAY()s. */
ep_finish_reset(iot, ioh);
}
/*
* Back-end attach and configure.
*/
int
epconfig(sc, chipset, enaddr)
struct ep_softc *sc;
u_short chipset;
u_int8_t *enaddr;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
u_int16_t i;
u_int8_t myla[ETHER_ADDR_LEN];
callout_init(&sc->sc_mii_callout);
callout_init(&sc->sc_mbuf_callout);
sc->ep_chipset = chipset;
/*
* We could have been groveling around in other register
* windows in the front-end; make sure we're in window 0
* to read the EEPROM.
*/
GO_WINDOW(0);
if (enaddr == NULL) {
/*
* Read the station address from the eeprom.
*/
for (i = 0; i < ETHER_ADDR_LEN / 2; i++) {
u_int16_t x = ep_read_eeprom(sc, i);
myla[(i << 1)] = x >> 8;
myla[(i << 1) + 1] = x;
}
enaddr = myla;
}
/*
* Vortex-based (3c59x pci,eisa) and Boomerang (3c900) cards
* allow FDDI-sized (4500) byte packets. Commands only take an
* 11-bit parameter, and 11 bits isn't enough to hold a full-size
* packet length.
* Commands to these cards implicitly upshift a packet size
* or threshold by 2 bits.
* To detect cards with large-packet support, we probe by setting
* the transmit threshold register, then change windows and
* read back the threshold register directly, and see if the
* threshold value was shifted or not.
*/
bus_space_write_2(iot, ioh, ELINK_COMMAND,
SET_TX_AVAIL_THRESH | ELINK_LARGEWIN_PROBE);
GO_WINDOW(5);
i = bus_space_read_2(iot, ioh, ELINK_W5_TX_AVAIL_THRESH);
GO_WINDOW(1);
switch (i) {
case ELINK_LARGEWIN_PROBE:
case (ELINK_LARGEWIN_PROBE & ELINK_LARGEWIN_MASK):
sc->ep_pktlenshift = 0;
break;
case (ELINK_LARGEWIN_PROBE << 2):
sc->ep_pktlenshift = 2;
break;
default:
aprint_error(
"%s: wrote 0x%x to TX_AVAIL_THRESH, read back 0x%x. "
"Interface disabled\n",
sc->sc_dev.dv_xname, ELINK_LARGEWIN_PROBE, (int) i);
return (1);
}
/*
* Ensure Tx-available interrupts are enabled for
* start the interface.
* XXX should be in epinit()?
*/
bus_space_write_2(iot, ioh, ELINK_COMMAND,
SET_TX_AVAIL_THRESH | (1600 >> sc->ep_pktlenshift));
strcpy(ifp->if_xname, sc->sc_dev.dv_xname);
ifp->if_softc = sc;
ifp->if_start = epstart;
ifp->if_ioctl = epioctl;
ifp->if_watchdog = epwatchdog;
ifp->if_init = epinit;
ifp->if_stop = epstop;
ifp->if_flags =
IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
IFQ_SET_READY(&ifp->if_snd);
if_attach(ifp);
ether_ifattach(ifp, enaddr);
/*
* Finish configuration:
* determine chipset if the front-end couldn't do so,
* show board details, set media.
*/
/*
* Print RAM size. We also print the Ethernet address in here.
* It's extracted from the ifp, so we have to make sure it's
* been attached first.
*/
ep_internalconfig(sc);
GO_WINDOW(0);
/*
* Display some additional information, if pertinent.
*/
if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER)
aprint_normal("%s: RoadRunner FIFO buffer enabled\n",
sc->sc_dev.dv_xname);
/*
* Initialize our media structures and MII info. We'll
* probe the MII if we discover that we have one.
*/
sc->sc_mii.mii_ifp = ifp;
sc->sc_mii.mii_readreg = ep_mii_readreg;
sc->sc_mii.mii_writereg = ep_mii_writereg;
sc->sc_mii.mii_statchg = ep_statchg;
ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, ep_media_change,
ep_media_status);
/*
* All CORKSCREW chips have MII.
*/
if (sc->ep_chipset == ELINK_CHIPSET_CORKSCREW)
sc->ep_flags |= ELINK_FLAGS_MII;
/*
* Now, determine which media we have.
*/
switch (sc->ep_chipset) {
case ELINK_CHIPSET_ROADRUNNER:
if (sc->ep_flags & ELINK_FLAGS_MII) {
ep_roadrunner_mii_enable(sc);
GO_WINDOW(0);
}
/* FALLTHROUGH */
case ELINK_CHIPSET_CORKSCREW:
case ELINK_CHIPSET_BOOMERANG:
/*
* If the device has MII, probe it. We won't be using
* any `native' media in this case, only PHYs. If
* we don't, just treat the Boomerang like the Vortex.
*/
if (sc->ep_flags & ELINK_FLAGS_MII) {
mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff,
MII_PHY_ANY, MII_OFFSET_ANY, 0);
if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
ifmedia_add(&sc->sc_mii.mii_media,
IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(&sc->sc_mii.mii_media,
IFM_ETHER|IFM_NONE);
} else {
ifmedia_set(&sc->sc_mii.mii_media,
IFM_ETHER|IFM_AUTO);
}
break;
}
/* FALLTHROUGH */
case ELINK_CHIPSET_VORTEX:
ep_vortex_probemedia(sc);
break;
default:
ep_509_probemedia(sc);
break;
}
GO_WINDOW(1); /* Window 1 is operating window */
#if NRND > 0
rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname,
RND_TYPE_NET, 0);
#endif
sc->tx_start_thresh = 20; /* probably a good starting point. */
/* Establish callback to reset card when we reboot. */
sc->sd_hook = shutdownhook_establish(epshutdown, sc);
ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET);
ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET);
/* The attach is successful. */
sc->sc_flags |= ELINK_FLAGS_ATTACHED;
return (0);
}
/*
* Show interface-model-independent info from window 3
* internal-configuration register.
*/
void
ep_internalconfig(sc)
struct ep_softc *sc;
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
u_int config0;
u_int config1;
int ram_size, ram_width, ram_split;
/*
* NVRAM buffer Rx:Tx config names for busmastering cards
* (Demon, Vortex, and later).
*/
const char *const onboard_ram_config[] = {
"5:3", "3:1", "1:1", "3:5" };
GO_WINDOW(3);
config0 = (u_int)bus_space_read_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG);
config1 = (u_int)bus_space_read_2(iot, ioh,
ELINK_W3_INTERNAL_CONFIG + 2);
GO_WINDOW(0);
ram_size = (config0 & CONFIG_RAMSIZE) >> CONFIG_RAMSIZE_SHIFT;
ram_width = (config0 & CONFIG_RAMWIDTH) >> CONFIG_RAMWIDTH_SHIFT;
ram_split = (config1 & CONFIG_RAMSPLIT) >> CONFIG_RAMSPLIT_SHIFT;
aprint_normal("%s: address %s, %dKB %s-wide FIFO, %s Rx:Tx split\n",
sc->sc_dev.dv_xname,
ether_sprintf(LLADDR(sc->sc_ethercom.ec_if.if_sadl)),
8 << ram_size,
(ram_width) ? "word" : "byte",
onboard_ram_config[ram_split]);
}
/*
* Find supported media on 3c509-generation hardware that doesn't have
* a "reset_options" register in window 3.
* Use the config_cntrl register in window 0 instead.
* Used on original, 10Mbit ISA (3c509), 3c509B, and pre-Demon EISA cards
* that implement CONFIG_CTRL. We don't have a good way to set the
* default active medium; punt to ifconfig instead.
*/
void
ep_509_probemedia(sc)
struct ep_softc *sc;
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
struct ifmedia *ifm = &sc->sc_mii.mii_media;
u_int16_t ep_w0_config, port;
const struct ep_media *epm;
const char *sep = "", *defmedianame = NULL;
int defmedia = 0;
GO_WINDOW(0);
ep_w0_config = bus_space_read_2(iot, ioh, ELINK_W0_CONFIG_CTRL);
aprint_normal("%s: ", sc->sc_dev.dv_xname);
/* Sanity check that there are any media! */
if ((ep_w0_config & ELINK_W0_CC_MEDIAMASK) == 0) {
aprint_error("no media present!\n");
ifmedia_add(ifm, IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(ifm, IFM_ETHER|IFM_NONE);
return;
}
/*
* Get the default media from the EEPROM.
*/
port = ep_read_eeprom(sc, EEPROM_ADDR_CFG) >> 14;
#define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", "
for (epm = ep_509_media; epm->epm_name != NULL; epm++) {
if (ep_w0_config & epm->epm_mpbit) {
/*
* This simple test works because 509 chipsets
* don't do full-duplex.
*/
if (epm->epm_epmedia == port || defmedia == 0) {
defmedia = epm->epm_ifmedia;
defmedianame = epm->epm_name;
}
ifmedia_add(ifm, epm->epm_ifmedia, epm->epm_epmedia,
NULL);
PRINT(epm->epm_name);
}
}
#undef PRINT
#ifdef DIAGNOSTIC
if (defmedia == 0)
panic("ep_509_probemedia: impossible");
#endif
aprint_normal(" (default %s)\n", defmedianame);
ifmedia_set(ifm, defmedia);
}
/*
* Find media present on large-packet-capable elink3 devices.
* Show onboard configuration of large-packet-capable elink3 devices
* (Demon, Vortex, Boomerang), which do not implement CONFIG_CTRL in window 0.
* Use media and card-version info in window 3 instead.
*/
void
ep_vortex_probemedia(sc)
struct ep_softc *sc;
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
struct ifmedia *ifm = &sc->sc_mii.mii_media;
const struct ep_media *epm;
u_int config1;
int reset_options;
int default_media; /* 3-bit encoding of default (EEPROM) media */
int defmedia = 0;
const char *sep = "", *defmedianame = NULL;
GO_WINDOW(3);
config1 = (u_int)bus_space_read_2(iot, ioh,
ELINK_W3_INTERNAL_CONFIG + 2);
reset_options = (int)bus_space_read_2(iot, ioh, ELINK_W3_RESET_OPTIONS);
GO_WINDOW(0);
default_media = (config1 & CONFIG_MEDIAMASK) >> CONFIG_MEDIAMASK_SHIFT;
aprint_normal("%s: ", sc->sc_dev.dv_xname);
/* Sanity check that there are any media! */
if ((reset_options & ELINK_PCI_MEDIAMASK) == 0) {
aprint_error("no media present!\n");
ifmedia_add(ifm, IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(ifm, IFM_ETHER|IFM_NONE);
return;
}
#define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", "
for (epm = ep_vortex_media; epm->epm_name != NULL; epm++) {
if (reset_options & epm->epm_mpbit) {
/*
* Default media is a little more complicated
* on the Vortex. We support full-duplex which
* uses the same reset options bit.
*
* XXX Check EEPROM for default to FDX?
*/
if (epm->epm_epmedia == default_media) {
if ((epm->epm_ifmedia & IFM_FDX) == 0) {
defmedia = epm->epm_ifmedia;
defmedianame = epm->epm_name;
}
} else if (defmedia == 0) {
defmedia = epm->epm_ifmedia;
defmedianame = epm->epm_name;
}
ifmedia_add(ifm, epm->epm_ifmedia, epm->epm_epmedia,
NULL);
PRINT(epm->epm_name);
}
}
#undef PRINT
#ifdef DIAGNOSTIC
if (defmedia == 0)
panic("ep_vortex_probemedia: impossible");
#endif
aprint_normal(" (default %s)\n", defmedianame);
ifmedia_set(ifm, defmedia);
}
/*
* One second timer, used to tick the MII.
*/
void
ep_tick(arg)
void *arg;
{
struct ep_softc *sc = arg;
int s;
#ifdef DIAGNOSTIC
if ((sc->ep_flags & ELINK_FLAGS_MII) == 0)
panic("ep_tick");
#endif
if (!device_is_active(&sc->sc_dev))
return;
s = splnet();
mii_tick(&sc->sc_mii);
splx(s);
callout_reset(&sc->sc_mii_callout, hz, ep_tick, sc);
}
/*
* Bring device up.
*
* The order in here seems important. Otherwise we may not receive
* interrupts. ?!
*/
int
epinit(ifp)
struct ifnet *ifp;
{
struct ep_softc *sc = ifp->if_softc;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
int i, error;
u_int8_t *addr;
if (!sc->enabled && (error = epenable(sc)) != 0)
return (error);
/* Make sure any pending reset has completed before touching board */
ep_finish_reset(iot, ioh);
/*
* Cancel any pending I/O.
*/
epstop(ifp, 0);
if (sc->bustype != ELINK_BUS_PCI && sc->bustype != ELINK_BUS_EISA
&& sc->bustype != ELINK_BUS_MCA) {
GO_WINDOW(0);
bus_space_write_2(iot, ioh, ELINK_W0_CONFIG_CTRL, 0);
bus_space_write_2(iot, ioh, ELINK_W0_CONFIG_CTRL,
ENABLE_DRQ_IRQ);
}
if (sc->bustype == ELINK_BUS_PCMCIA) {
bus_space_write_2(iot, ioh, ELINK_W0_RESOURCE_CFG, 0x3f00);
}
GO_WINDOW(2);
/* Reload the ether_addr. */
addr = LLADDR(ifp->if_sadl);
for (i = 0; i < 6; i += 2)
bus_space_write_2(iot, ioh, ELINK_W2_ADDR_0 + i,
(addr[i] << 0) | (addr[i + 1] << 8));
/*
* Reset the station-address receive filter.
* A bug workaround for busmastering (Vortex, Demon) cards.
*/
for (i = 0; i < 6; i += 2)
bus_space_write_2(iot, ioh, ELINK_W2_RECVMASK_0 + i, 0);
ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET);
ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET);
GO_WINDOW(1); /* Window 1 is operating window */
for (i = 0; i < 31; i++)
(void)bus_space_read_2(iot, ioh,
ep_w1_reg(sc, ELINK_W1_TX_STATUS));
/* Set threshold for Tx-space available interrupt. */
bus_space_write_2(iot, ioh, ELINK_COMMAND,
SET_TX_AVAIL_THRESH | (1600 >> sc->ep_pktlenshift));
if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) {
/*
* Enable options in the PCMCIA LAN COR register, via
* RoadRunner Window 1.
*
* XXX MAGIC CONSTANTS!
*/
u_int16_t cor;
bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, (1 << 11));
cor = bus_space_read_2(iot, ioh, 0) & ~0x30;
if (sc->ep_flags & ELINK_FLAGS_USESHAREDMEM)
cor |= 0x10;
if (sc->ep_flags & ELINK_FLAGS_FORCENOWAIT)
cor |= 0x20;
bus_space_write_2(iot, ioh, 0, cor);
bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 0);
bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0);
if (sc->ep_flags & ELINK_FLAGS_MII) {
ep_roadrunner_mii_enable(sc);
GO_WINDOW(1);
}
}
/* Enable interrupts. */
bus_space_write_2(iot, ioh, ELINK_COMMAND,
SET_RD_0_MASK | WATCHED_INTERRUPTS);
bus_space_write_2(iot, ioh, ELINK_COMMAND,
SET_INTR_MASK | WATCHED_INTERRUPTS);
/*
* Attempt to get rid of any stray interrupts that occurred during
* configuration. On the i386 this isn't possible because one may
* already be queued. However, a single stray interrupt is
* unimportant.
*/
bus_space_write_2(iot, ioh, ELINK_COMMAND, ACK_INTR | 0xff);
epsetfilter(sc);
epsetmedia(sc);
bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_ENABLE);
bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_ENABLE);
epmbuffill(sc);
/* Interface is now `running', with no output active. */
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
if (sc->ep_flags & ELINK_FLAGS_MII) {
/* Start the one second clock. */
callout_reset(&sc->sc_mii_callout, hz, ep_tick, sc);
}
/* Attempt to start output, if any. */
epstart(ifp);
return (0);
}
/*
* Set multicast receive filter.
* elink3 hardware has no selective multicast filter in hardware.
* Enable reception of all multicasts and filter in software.
*/
void
epsetfilter(sc)
struct ep_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
GO_WINDOW(1); /* Window 1 is operating window */
bus_space_write_2(sc->sc_iot, sc->sc_ioh, ELINK_COMMAND,
SET_RX_FILTER | FIL_INDIVIDUAL | FIL_BRDCST |
((ifp->if_flags & IFF_MULTICAST) ? FIL_MULTICAST : 0) |
((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0));
}
int
ep_media_change(ifp)
struct ifnet *ifp;
{
struct ep_softc *sc = ifp->if_softc;
if (sc->enabled && (ifp->if_flags & IFF_UP) != 0)
epreset(sc);
return (0);
}
/*
* Reset and enable the MII on the RoadRunner.
*/
void
ep_roadrunner_mii_enable(sc)
struct ep_softc *sc;
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
GO_WINDOW(3);
bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS,
ELINK_PCI_100BASE_MII|ELINK_RUNNER_ENABLE_MII);
delay(1000);
bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS,
ELINK_PCI_100BASE_MII|ELINK_RUNNER_MII_RESET|
ELINK_RUNNER_ENABLE_MII);
ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET);
ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET);
delay(1000);
bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS,
ELINK_PCI_100BASE_MII|ELINK_RUNNER_ENABLE_MII);
}
/*
* Set the card to use the specified media.
*/
void
epsetmedia(sc)
struct ep_softc *sc;
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
/* Turn everything off. First turn off linkbeat and UTP. */
GO_WINDOW(4);
bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 0x0);
/* Turn off coax */
bus_space_write_2(iot, ioh, ELINK_COMMAND, STOP_TRANSCEIVER);
delay(1000);
/*
* If the device has MII, select it, and then tell the
* PHY which media to use.
*/
if (sc->ep_flags & ELINK_FLAGS_MII) {
int config0, config1;
GO_WINDOW(3);
if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) {
int resopt;
resopt = bus_space_read_2(iot, ioh,
ELINK_W3_RESET_OPTIONS);
bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS,
resopt | ELINK_RUNNER_ENABLE_MII);
}
config0 = (u_int)bus_space_read_2(iot, ioh,
ELINK_W3_INTERNAL_CONFIG);
config1 = (u_int)bus_space_read_2(iot, ioh,
ELINK_W3_INTERNAL_CONFIG + 2);
config1 = config1 & ~CONFIG_MEDIAMASK;
config1 |= (ELINKMEDIA_MII << CONFIG_MEDIAMASK_SHIFT);
bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG, config0);
bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG + 2,
config1);
GO_WINDOW(1); /* back to operating window */
mii_mediachg(&sc->sc_mii);
return;
}
/*
* Now turn on the selected media/transceiver.
*/
GO_WINDOW(4);
switch (IFM_SUBTYPE(sc->sc_mii.mii_media.ifm_cur->ifm_media)) {
case IFM_10_T:
bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE,
JABBER_GUARD_ENABLE|LINKBEAT_ENABLE);
break;
case IFM_10_2:
bus_space_write_2(iot, ioh, ELINK_COMMAND, START_TRANSCEIVER);
DELAY(1000); /* 50ms not enmough? */
break;
case IFM_100_TX:
case IFM_100_FX:
case IFM_100_T4: /* XXX check documentation */
bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE,
LINKBEAT_ENABLE);