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freebsd-skq/sys/pci/if_wx.c
archie fa21035b4e Move code to handle BPF and bridging for incoming Ethernet packets out 
of the individual drivers and into the common routine ether_input().
Also, remove the (incomplete) hack for matching ethernet headers
in the ip_fw code.

The good news: net result of 1016 lines removed, and this should make
bridging now work with *all* Ethernet drivers.

The bad news: it's nearly impossible to test every driver, especially
for bridging, and I was unable to get much testing help on the mailing
lists.

Reviewed by:	freebsd-net
2000-05-14 02:18:43 +00:00

1963 lines
44 KiB
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/*
* Copyright (c) 1999, Traakan Software
* 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 unmodified, 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
/*
* Intel Gigabit Ethernet (82452) Driver.
* Inspired by fxp driver by David Greenman for FreeBSD, and by
* Bill Paul's work in other FreeBSD network drivers.
*/
/*
* Options
*/
/*
* Use only every other 16 byte receive descriptor, leaving the ones
* in between empty. This card is most efficient at reading/writing
* 32 byte cache lines, so avoid all the (not working for early rev
* cards) MWI and/or READ/MODIFY/WRITE cycles updating one descriptor
* would have you do.
*
* This isn't debugged yet.
*/
/* #define PADDED_CELL 1 */
/*
* Enable JumboGrams. This seems to work.
*/
/* #define WX_JUMBO 1 */
/*
* Since the includes are a mess, they'll all be in if_wxvar.h
*/
#if defined(__NetBSD__)
#include <dev/pci/if_wxvar.h>
#elif defined(__FreeBSD__)
#include <pci/if_wxvar.h>
#endif
#ifdef __alpha__
#undef vtophys
#define vtophys(va) alpha_XXX_dmamap((vm_offset_t)(va))
#endif /* __alpha__ */
/*
* Function Prototpes, yadda yadda...
*/
static int wx_intr __P((void *));
static void wx_handle_link_intr __P((wx_softc_t *));
static void wx_handle_rxint __P((wx_softc_t *));
static void wx_gc __P((wx_softc_t *));
static void wx_start __P((struct ifnet *));
static int wx_ioctl __P((struct ifnet *, IOCTL_CMD_TYPE, caddr_t));
static int wx_ifmedia_upd __P((struct ifnet *));
static void wx_ifmedia_sts __P((struct ifnet *, struct ifmediareq *));
static int wx_init __P((void *));
static void wx_hw_stop __P((wx_softc_t *));
static void wx_set_addr __P((wx_softc_t *, int, u_int8_t *));
static int wx_hw_initialize __P((wx_softc_t *));
static void wx_stop __P((wx_softc_t *));
static void wx_watchdog __P((struct ifnet *));
static int wx_get_rbuf __P((wx_softc_t *, rxpkt_t *));
static void wx_rxdma_map __P((wx_softc_t *, rxpkt_t *, struct mbuf *));
static INLINE void wx_eeprom_raise_clk __P((wx_softc_t *, u_int32_t));
static INLINE void wx_eeprom_lower_clk __P((wx_softc_t *, u_int32_t));
static INLINE void wx_eeprom_sobits __P((wx_softc_t *, u_int16_t, u_int16_t));
static INLINE u_int16_t wx_eeprom_sibits __P((wx_softc_t *));
static INLINE void wx_eeprom_cleanup __P((wx_softc_t *));
static INLINE u_int16_t wx_read_eeprom_word __P((wx_softc_t *, int));
static void wx_read_eeprom __P((wx_softc_t *, u_int16_t *, int, int));
static int wx_attach_common __P((wx_softc_t *));
static void wx_stats_update __P((void *));
static INLINE void wx_mwi_whackon __P((wx_softc_t *));
static INLINE void wx_mwi_unwhack __P((wx_softc_t *));
static int wx_dring_setup __P((wx_softc_t *));
static void wx_dring_teardown __P((wx_softc_t *));
#define WX_DISABLE_INT(sc) WRITE_CSR(sc, WXREG_IMCLR, WXDISABLE)
#define WX_ENABLE_INT(sc) WRITE_CSR(sc, WXREG_IMASK, sc->wx_ienable)
#define JUMBOMTU (WX_MAX_PKT_SIZE_JUMBO - sizeof (struct ether_header))
#ifdef WX_JUMBO
#define WX_MAXMTU JUMBOMTU
#else
#define WX_MAXMTU ETHERMTU
#endif
#if defined(__NetBSD__)
#ifdef __BROKEN_INDIRECT_CONFIG
#define MATCHARG void *
#else
#define MATCHARG struct cfdata *
#endif
static int wx_match __P((struct device *, MATCHARG, void *));
static void wx_attach __P((struct device *, struct device *, void *));
static void wx_shutdown __P((void *));
static int wx_ether_ioctl __P((struct ifnet *, IOCTL_CMD_TYPE, caddr_t));
static int wx_mc_setup __P((wx_softc_t *));
#define ether_ioctl wx_ether_ioctl
/*
* Life *should* be simple- we only read/write 32 bit values in registers.
* Unfortunately, some platforms define bus_space functions in a fashion
* such that they cannot be used as part of a for loop, for example.
*/
static INLINE u_int32_t _read_csr __P((struct wx_softc *, u_int32_t));
static INLINE void _write_csr __P((struct wx_softc *, u_int32_t, u_int32_t));
static INLINE u_int32_t _read_csr(sc, reg)
struct wx_softc *sc;
u_int32_t reg;
{
return bus_space_read_4(sc->w.st, sc->w.sh, reg);
}
static INLINE void _write_csr(sc, reg, val)
struct wx_softc *sc;
u_int32_t reg;
u_int32_t val;
{
bus_space_write_4(sc->w.st, sc->w.sh, reg, val);
}
static wx_softc_t *wxlist;
struct cfattach wx_ca = {
sizeof (wx_softc_t), wx_match, wx_attach
};
/*
* Check if a device is an 82452.
*/
static int
wx_match(parent, match, aux)
struct device *parent;
MATCHARG match;
void *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) != WX_VENDOR_INTEL) {
return (0);
}
if (PCI_PRODUCT(pa->pa_id) != WX_PRODUCT_82452) {
return (0);
}
return (1);
}
static void
wx_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
wx_softc_t *tmp, *sc = (wx_softc_t *)self;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
u_int32_t data;
struct ifnet *ifp;
sc->w.pci_pc = pa->pa_pc;
sc->w.pci_tag = pa->pa_tag;
/*
* Map control/status registers.
*/
if (pci_mapreg_map(pa, WX_MMBA, PCI_MAPREG_TYPE_MEM, 0,
&sc->w.st, &sc->w.sh, NULL, NULL)) {
printf(": can't map registers\n");
return;
}
printf(": Intel GigaBit Ethernet\n");
/*
* Allocate our interrupt.
*/
if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &ih)) {
printf("%s: couldn't map interrupt\n", sc->wx_name);
return;
}
intrstr = pci_intr_string(pc, ih);
sc->w.ih = pci_intr_establish(pc, ih, IPL_NET, wx_intr, sc);
if (sc->w.ih == NULL) {
printf("%s: couldn't establish interrupt", sc->wx_name);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf("%s: interrupting at %s\n", sc->wx_name, intrstr);
sc->revision =
pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0xff;
data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG);
data &= ~(PCI_CACHELINE_MASK << PCI_CACHELINE_SHIFT);
data |= (WX_CACHELINE_SIZE << PCI_CACHELINE_SHIFT);
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG, data);
if (wx_attach_common(sc)) {
return;
}
printf("%s: Ethernet address %s\n",
sc->wx_name, ether_sprintf(sc->wx_enaddr));
ifp = &sc->w.ethercom.ec_if;
bcopy(sc->wx_name, ifp->if_xname, IFNAMSIZ);
ifp->if_mtu = WX_MAXMTU;
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = wx_ioctl;
ifp->if_start = wx_start;
ifp->if_watchdog = wx_watchdog;
/*
* Attach the interface.
*/
if_attach(ifp);
ether_ifattach(ifp, sc->wx_enaddr);
#if NBPFILTER > 0
bpfattach(&sc->w.ethercom.ec_if.if_bpf, ifp, DLT_EN10MB,
sizeof (struct ether_header));
#endif
/*
* Add shutdown hook so that DMA is disabled prior to reboot. Not
* doing do could allow DMA to corrupt kernel memory during the
* reboot before the driver initializes.
*/
shutdownhook_establish(wx_shutdown, sc);
tmp = wxlist;
if (tmp) {
while (tmp->wx_next)
tmp = tmp->wx_next;
tmp->wx_next = sc;
} else {
wxlist = sc;
}
}
/*
* Device shutdown routine. Called at system shutdown after sync. The
* main purpose of this routine is to shut off receiver DMA so that
* kernel memory doesn't get clobbered during warmboot.
*/
static void
wx_shutdown(sc)
void *sc;
{
wx_hw_stop((wx_softc_t *) sc);
}
static int
wx_ether_ioctl(ifp, cmd, data)
struct ifnet *ifp;
IOCTL_CMD_TYPE cmd;
caddr_t data;
{
struct ifaddr *ifa = (struct ifaddr *) data;
int error = 0;
wx_softc_t *sc = SOFTC_IFP(ifp);
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
error = wx_init(sc);
if (error) {
ifp->if_flags &= ~IFF_UP;
break;
}
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
arp_ifinit(ifp, ifa);
break;
#endif
#ifdef NS
case AF_NS:
{
register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr;
if (ns_nullhost(*ina))
ina->x_host = *(union ns_host *)
LLADDR(ifp->if_sadl);
else
bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl),
ifp->if_addrlen);
break;
}
#endif
default:
break;
}
break;
default:
error = EINVAL;
break;
}
return (0);
}
/*
* Program multicast addresses.
*
* This function must be called at splimp, but it may sleep.
*/
static int
wx_mc_setup(sc)
wx_softc_t *sc;
{
struct ifnet *ifp = &sc->wx_if;
struct ether_multistep step;
struct ether_multi *enm;
/*
* XXX: drain TX queue- use a tsleep/wakeup until done.
*/
if (sc->tactive) {
return (EBUSY);
}
wx_stop(sc);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
sc->all_mcasts = 1;
return (wx_init(sc));
}
ETHER_FIRST_MULTI(step, &sc->w.ethercom, enm);
while (enm != NULL) {
if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0)
continue;
if (sc->wx_nmca >= WX_RAL_TAB_SIZE-1) {
sc->wx_nmca = 0;
sc->all_mcasts = 1;
break;
}
bcopy(enm->enm_addrlo,
(void *) &sc->wx_mcaddr[sc->wx_nmca++][0], 6);
ETHER_NEXT_MULTI(step, enm);
}
return (wx_init(sc));
}
static INLINE void
wx_mwi_whackon(sc)
wx_softc_t *sc;
{
sc->wx_cmdw =
pci_conf_read(sc->w.pci_pc, sc->w.pci_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(sc->w.pci_pc, sc->w.pci_tag,
PCI_COMMAND_STATUS_REG, sc->wx_cmdw & ~MWI);
}
static INLINE void
wx_mwi_unwhack(sc)
wx_softc_t *sc;
{
if (sc->wx_cmdw & MWI) {
pci_conf_write(sc->w.pci_pc, sc->w.pci_tag,
PCI_COMMAND_STATUS_REG, sc->wx_cmdw & ~MWI);
}
}
static int
wx_dring_setup(sc)
wx_softc_t *sc;
{
size_t len;
len = sizeof (wxrd_t) * WX_MAX_RDESC;
if (len > NBPG) {
printf("%s: len (%lx) over a page for the receive ring\n",
sc->wx_name, len);
return (-1);
}
len = NBPG;
sc->rdescriptors = (wxrd_t *) WXMALLOC(len);
if (sc->rdescriptors == NULL) {
printf("%s: could not allocate rcv descriptors\n", sc->wx_name);
return (-1);
}
if (((u_long)sc->rdescriptors) & 0xfff) {
printf("%s: rcv descriptors not 4KB aligned\n", sc->wx_name);
return (-1);
}
bzero(sc->rdescriptors, len);
len = sizeof (wxtd_t) * WX_MAX_TDESC;
if (len > NBPG) {
printf("%s: len (%lx) over a page for the xmit ring\n",
sc->wx_name, len);
return (-1);
}
len = NBPG;
sc->tdescriptors = (wxtd_t *) WXMALLOC(len);
if (sc->tdescriptors == NULL) {
printf("%s: could not allocate xmt descriptors\n", sc->wx_name);
return (-1);
}
if (((u_long)sc->tdescriptors) & 0xfff) {
printf("%s: xmt descriptors not 4KB aligned\n", sc->wx_name);
return (-1);
}
bzero(sc->tdescriptors, len);
return (0);
}
static void
wx_dring_teardown(sc)
wx_softc_t *sc;
{
if (sc->rdescriptors) {
WXFREE(sc->rdescriptors);
sc->rdescriptors = NULL;
}
if (sc->tdescriptors) {
WXFREE(sc->tdescriptors);
sc->tdescriptors = NULL;
}
}
#elif defined(__FreeBSD__)
static int wx_mc_setup __P((wx_softc_t *));
/*
* Program multicast addresses.
*
* This function must be called at splimp, but it may sleep.
*/
static int
wx_mc_setup(sc)
wx_softc_t *sc;
{
struct ifnet *ifp = &sc->wx_if;
struct ifmultiaddr *ifma;
/*
* XXX: drain TX queue- use a tsleep/wakeup until done.
*/
if (sc->tactive) {
return (EBUSY);
}
wx_stop(sc);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
sc->all_mcasts = 1;
return (wx_init(sc));
}
for (ifma = ifp->if_multiaddrs.lh_first, sc->wx_nmca = 0;
ifma != NULL; ifma = ifma->ifma_link.le_next) {
if (ifma->ifma_addr->sa_family != AF_LINK) {
continue;
}
if (sc->wx_nmca >= WX_RAL_TAB_SIZE-1) {
sc->wx_nmca = 0;
sc->all_mcasts = 1;
break;
}
bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
(void *) &sc->wx_mcaddr[sc->wx_nmca++][0], 6);
}
return (wx_init(sc));
}
/*
* Return identification string if this is device is ours.
*/
static wx_softc_t *wxlist;
static int
wx_probe(device_t dev)
{
if ((pci_get_vendor(dev) == WX_VENDOR_INTEL) &&
(pci_get_device(dev) == WX_PRODUCT_82452)) {
device_set_desc(dev, "Intel GigaBit Ethernet");
return 0;
}
return (ENXIO);
}
static int
wx_attach(device_t dev)
{
int error = 0;
wx_softc_t *tmp, *sc = device_get_softc(dev);
struct ifnet *ifp;
int s;
u_long val;
int rid;
bzero(sc, sizeof (wx_softc_t));
callout_handle_init(&sc->w.sch);
sc->w.dev = dev;
if (getenv_int("wx_debug", &rid)) {
if (rid & (1 << device_get_unit(dev))) {
sc->wx_debug = 1;
}
}
if (getenv_int("wx_no_ilos", &rid)) {
if (rid & (1 << device_get_unit(dev))) {
sc->wx_no_ilos = 1;
}
}
if (getenv_int("wx_ilos", &rid)) {
if (rid & (1 << device_get_unit(dev))) {
sc->wx_ilos = 1;
}
}
if (getenv_int("wx_no_flow", &rid)) {
if (rid & (1 << device_get_unit(dev))) {
sc->wx_no_flow = 1;
}
}
s = splimp();
/*
* Enable bus mastering, make sure that the cache line size is right.
*/
val = pci_read_config(dev, PCIR_COMMAND, 2);
val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
pci_write_config(dev, PCIR_COMMAND, val, 2);
val = pci_read_config(dev, PCIR_CACHELNSZ, 1);
if (val != 0x10) {
pci_write_config(dev, PCIR_CACHELNSZ, 0x10, 1);
}
/*
* get revision
*/
sc->revision = pci_read_config(dev, PCIR_CLASS, 1);
/*
* Map control/status registers.
*/
rid = WX_MMBA;
sc->w.mem = bus_alloc_resource(dev, SYS_RES_MEMORY,
&rid, 0, ~0, 1, RF_ACTIVE);
if (!sc->w.mem) {
device_printf(dev, "could not map memory\n");
error = ENXIO;
goto out;
}
sc->w.st = rman_get_bustag(sc->w.mem);
sc->w.sh = rman_get_bushandle(sc->w.mem);
rid = 0;
sc->w.irq = bus_alloc_resource(dev, SYS_RES_IRQ,
&rid, 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE);
if (sc->w.irq == NULL) {
device_printf(dev, "could not map interrupt\n");
error = ENXIO;
goto out;
}
error = bus_setup_intr(dev, sc->w.irq, INTR_TYPE_NET,
(void (*)(void *))wx_intr, sc, &sc->w.ih);
if (error) {
device_printf(dev, "could not setup irq\n");
goto out;
}
if (wx_attach_common(sc)) {
bus_teardown_intr(dev, sc->w.irq, sc->w.ih);
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->w.irq);
bus_release_resource(dev, SYS_RES_MEMORY, WX_MMBA, sc->w.mem);
error = ENXIO;
goto out;
}
device_printf(dev, "Ethernet address %02x:%02x:%02x:%02x:%02x:%02x\n",
sc->w.arpcom.ac_enaddr[0], sc->w.arpcom.ac_enaddr[1],
sc->w.arpcom.ac_enaddr[2], sc->w.arpcom.ac_enaddr[3],
sc->w.arpcom.ac_enaddr[4], sc->w.arpcom.ac_enaddr[5]);
(void) snprintf(sc->wx_name, sizeof (sc->wx_name) - 1, "wx%d",
device_get_unit(dev));
ifp = &sc->w.arpcom.ac_if;
ifp->if_unit = device_get_unit(dev);
ifp->if_name = "wx";
ifp->if_mtu = WX_MAXMTU;
ifp->if_output = ether_output;
ifp->if_baudrate = 1000000000;
ifp->if_init = (void (*)(void *))wx_init;
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = wx_ioctl;
ifp->if_start = wx_start;
ifp->if_watchdog = wx_watchdog;
if_attach(ifp);
ifp->if_snd.ifq_maxlen = WX_MAX_TDESC - 1;
ether_ifattach(ifp);
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
tmp = wxlist;
if (tmp) {
while (tmp->wx_next)
tmp = tmp->wx_next;
tmp->wx_next = sc;
} else {
wxlist = sc;
}
out:
splx(s);
return (error);
}
static int
wx_detach(device_t dev)
{
wx_softc_t *sc = device_get_softc(dev);
int s = splimp();
if_detach(&sc->w.arpcom.ac_if);
wx_stop(sc);
bus_teardown_intr(dev, sc->w.irq, sc->w.ih);
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->w.irq);
bus_release_resource(dev, SYS_RES_MEMORY, WX_MMBA, sc->w.mem);
splx(s);
return (0);
}
static int
wx_shutdown(device_t dev)
{
wx_hw_stop((wx_softc_t *) device_get_softc(dev));
return (0);
}
static INLINE void
wx_mwi_whackon(sc)
wx_softc_t *sc;
{
sc->wx_cmdw = pci_read_config(sc->w.dev, PCIR_COMMAND, 2);
pci_write_config(sc->w.dev, PCIR_COMMAND, sc->wx_cmdw & ~MWI, 2);
}
static INLINE void
wx_mwi_unwhack(sc)
wx_softc_t *sc;
{
if (sc->wx_cmdw & MWI) {
pci_write_config(sc->w.dev, PCIR_COMMAND, sc->wx_cmdw, 2);
}
}
static int
wx_dring_setup(sc)
wx_softc_t *sc;
{
size_t len;
len = sizeof (wxrd_t) * WX_MAX_RDESC;
sc->rdescriptors = (wxrd_t *)
contigmalloc(len, M_DEVBUF, M_NOWAIT, 0, ~0, 4096, 0);
if (sc->rdescriptors == NULL) {
printf("%s: could not allocate rcv descriptors\n", sc->wx_name);
return (-1);
}
if (((u_long)sc->rdescriptors) & 0xfff) {
printf("%s: rcv descriptors not 4KB aligned\n", sc->wx_name);
return (-1);
}
bzero(sc->rdescriptors, len);
len = sizeof (wxtd_t) * WX_MAX_TDESC;
sc->tdescriptors = (wxtd_t *)
contigmalloc(len, M_DEVBUF, M_NOWAIT, 0, ~0, 4096, 0);
if (sc->tdescriptors == NULL) {
printf("%s: could not allocate xmt descriptors\n", sc->wx_name);
return (-1);
}
if (((u_long)sc->tdescriptors) & 0xfff) {
printf("%s: xmt descriptors not 4KB aligned\n", sc->wx_name);
return (-1);
}
bzero(sc->tdescriptors, len);
return (0);
}
static void
wx_dring_teardown(sc)
wx_softc_t *sc;
{
if (sc->rdescriptors) {
WXFREE(sc->rdescriptors);
sc->rdescriptors = NULL;
}
if (sc->tdescriptors) {
WXFREE(sc->tdescriptors);
sc->tdescriptors = NULL;
}
}
static device_method_t wx_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, wx_probe),
DEVMETHOD(device_attach, wx_attach),
DEVMETHOD(device_detach, wx_detach),
DEVMETHOD(device_shutdown, wx_shutdown),
{ 0, 0 }
};
static driver_t wx_driver = {
"wx", wx_methods, sizeof(wx_softc_t),
};
static devclass_t wx_devclass;
DRIVER_MODULE(if_wx, pci, wx_driver, wx_devclass, 0, 0);
#endif
/*
* Do generic parts of attach. Our registers have been mapped
* and our interrupt registered.
*/
static int
wx_attach_common(sc)
wx_softc_t *sc;
{
size_t len;
u_int32_t tmp;
int ll = 0;
/*
* First, reset the chip.
*/
wx_hw_stop(sc);
/*
* Second, validate our EEPROM.
*/
/* TBD */
/*
* Third, read eeprom for our MAC address and other things.
*/
wx_read_eeprom(sc, (u_int16_t *)sc->wx_enaddr, WX_EEPROM_MAC_OFF, 3);
/*
* Fourth, establish some adapter parameters.
*/
sc->wx_txint_delay = 128;
ifmedia_init(&sc->wx_media, IFM_IMASK, wx_ifmedia_upd, wx_ifmedia_sts);
ifmedia_add(&sc->wx_media, IFM_ETHER|IFM_1000_SX, 0, NULL);
ifmedia_add(&sc->wx_media, IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
ifmedia_set(&sc->wx_media, IFM_ETHER|IFM_1000_SX|IFM_FDX);
sc->wx_media.ifm_media = sc->wx_media.ifm_cur->ifm_media;
ll += 1;
/*
* Fifth, establish a default device control register word.
*/
sc->wx_dcr = 0;
if (sc->wx_cfg1 & WX_EEPROM_CTLR1_FD)
sc->wx_dcr |= WXDCR_FD;
if (sc->wx_cfg1 & WX_EEPROM_CTLR1_ILOS)
sc->wx_dcr |= WXDCR_ILOS;
tmp = (sc->wx_cfg1 >> WX_EEPROM_CTLR1_SWDPIO_SHIFT) & WXDCR_SWDPIO_MASK;
sc->wx_dcr |= (tmp << WXDCR_SWDPIO_SHIFT);
if (sc->wx_no_ilos)
sc->wx_dcr &= ~WXDCR_ILOS;
if (sc->wx_ilos)
sc->wx_dcr |= WXDCR_ILOS;
if (sc->wx_no_flow == 0)
sc->wx_dcr |= WXDCR_RFCE | WXDCR_TFCE;
/*
* Sixth, allocate various sw structures...
*/
len = sizeof (rxpkt_t) * WX_MAX_RDESC;
sc->rbase = (rxpkt_t *) WXMALLOC(len);
if (sc->rbase == NULL) {
goto fail;
}
bzero(sc->rbase, len);
ll += 1;
len = sizeof (txpkt_t) * WX_MAX_TDESC;
sc->tbase = (txpkt_t *) WXMALLOC(len);
if (sc->tbase == NULL) {
goto fail;
}
bzero(sc->tbase, len);
ll += 1;
/*
* Seventh, allocate and dma map (platform dependent) descriptor rings.
* They have to be aligned on a 4KB boundary.
*/
if (wx_dring_setup(sc) == 0) {
return (0);
}
fail:
printf("%s: failed to do common attach (%d)\n", sc->wx_name, ll);
wx_dring_teardown(sc);
if (sc->rbase) {
WXFREE(sc->rbase);
sc->rbase = NULL;
}
if (sc->tbase) {
WXFREE(sc->tbase);
sc->tbase = NULL;
}
return (ENOMEM);
}
/*
* EEPROM functions.
*/
static INLINE void
wx_eeprom_raise_clk(sc, regval)
wx_softc_t *sc;
u_int32_t regval;
{
WRITE_CSR(sc, WXREG_EECDR, regval | WXEECD_SK);
DELAY(50);
}
static INLINE void
wx_eeprom_lower_clk(sc, regval)
wx_softc_t *sc;
u_int32_t regval;
{
WRITE_CSR(sc, WXREG_EECDR, regval & ~WXEECD_SK);
DELAY(50);
}
static INLINE void
wx_eeprom_sobits(sc, data, count)
wx_softc_t *sc;
u_int16_t data;
u_int16_t count;
{
u_int32_t regval, mask;
mask = 1 << (count - 1);
regval = READ_CSR(sc, WXREG_EECDR) & ~(WXEECD_DI|WXEECD_DO);
do {
if (data & mask)
regval |= WXEECD_DI;
else
regval &= ~WXEECD_DI;
WRITE_CSR(sc, WXREG_EECDR, regval); DELAY(50);
wx_eeprom_raise_clk(sc, regval);
wx_eeprom_lower_clk(sc, regval);
mask >>= 1;
} while (mask != 0);
WRITE_CSR(sc, WXREG_EECDR, regval & ~WXEECD_DI);
}
static INLINE u_int16_t
wx_eeprom_sibits(sc)
wx_softc_t *sc;
{
unsigned int regval, i;
u_int16_t data;
data = 0;
regval = READ_CSR(sc, WXREG_EECDR) & ~(WXEECD_DI|WXEECD_DO);
for (i = 0; i != 16; i++) {
data <<= 1;
wx_eeprom_raise_clk(sc, regval);
regval = READ_CSR(sc, WXREG_EECDR) & ~WXEECD_DI;
if (regval & WXEECD_DO) {
data |= 1;
}
wx_eeprom_lower_clk(sc, regval);
}
return (data);
}
static INLINE void
wx_eeprom_cleanup(sc)
wx_softc_t *sc;
{
u_int32_t regval;
regval = READ_CSR(sc, WXREG_EECDR) & ~(WXEECD_DI|WXEECD_CS);
WRITE_CSR(sc, WXREG_EECDR, regval); DELAY(50);
wx_eeprom_raise_clk(sc, regval);
wx_eeprom_lower_clk(sc, regval);
}
static u_int16_t INLINE
wx_read_eeprom_word(sc, offset)
wx_softc_t *sc;
int offset;
{
u_int16_t data;
WRITE_CSR(sc, WXREG_EECDR, WXEECD_CS);
wx_eeprom_sobits(sc, EEPROM_READ_OPCODE, 3);
wx_eeprom_sobits(sc, offset, 6);
data = wx_eeprom_sibits(sc);
wx_eeprom_cleanup(sc);
return (data);
}
static void
wx_read_eeprom(sc, data, offset, words)
wx_softc_t *sc;
u_int16_t *data;
int offset;
int words;
{
int i;
for (i = 0; i < words; i++) {
*data++ = wx_read_eeprom_word(sc, offset++);
}
sc->wx_cfg1 = wx_read_eeprom_word(sc, WX_EEPROM_CTLR1_OFF);
}
/*
* Start packet transmission on the interface.
*/
static void
wx_start(ifp)
struct ifnet *ifp;
{
wx_softc_t *sc = SOFTC_IFP(ifp);
u_int16_t cidx, nactv;
nactv = sc->tactive;
while (nactv < WX_MAX_TDESC) {
int ndesc;
int gctried = 0;
struct mbuf *m, *mb_head;
IF_DEQUEUE(&ifp->if_snd, mb_head);
if (mb_head == NULL) {
break;
}
sc->wx_xmitwanted++;
/*
* If we have a packet less than ethermin, pad it out.
*/
if (mb_head->m_pkthdr.len < WX_MIN_RPKT_SIZE) {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
m_freem(mb_head);
break;
}
m_copydata(mb_head, 0, mb_head->m_pkthdr.len,
mtod(m, caddr_t));
m->m_pkthdr.len = m->m_len = WX_MIN_RPKT_SIZE;
bzero(mtod(m, char *) + mb_head->m_pkthdr.len,
WX_MIN_RPKT_SIZE - mb_head->m_pkthdr.len);
sc->wx_xmitpullup++;
m_freem(mb_head);
mb_head = m;
}
again:
cidx = sc->tnxtfree;
nactv = sc->tactive;
/*
* Go through each of the mbufs in the chain and initialize
* the transmit buffer descriptors with the physical address
* and size of that mbuf. If we have a length less than our
* minimum transmit size, we bail (to do a pullup). If we run
* out of descriptors, we also bail and try and do a pullup.
*/
for (ndesc = 0, m = mb_head; m != NULL; m = m->m_next) {
vm_offset_t vptr;
wxtd_t *td;
/*
* If this mbuf has no data, skip it.
*/
if (m->m_len == 0) {
continue;
}
/*
* If this packet is too small for the chip's minimum,
* break out to to cluster it.
*/
if (m->m_len < WX_MIN_RPKT_SIZE) {
sc->wx_xmitrunt++;
break;
}
/*
* Do we have a descriptor available for this mbuf?
*/
if (++nactv == WX_MAX_TDESC) {
if (gctried++ == 0) {
sc->wx_xmitgc++;
wx_gc(sc);
goto again;
}
break;
}
sc->tbase[cidx].dptr = m;
td = &sc->tdescriptors[cidx];
td->length = m->m_len;
vptr = mtod(m, vm_offset_t);
td->address.highpart = 0;
td->address.lowpart = vtophys(vptr);
td->cso = 0;
td->status = 0;
td->special = 0;
td->cmd = 0;
td->css = 0;
if (sc->wx_debug) {
printf("%s: XMIT[%d] %p vptr %lx (length %d "
"DMA addr %x) idx %d\n", sc->wx_name,
ndesc, m, (long) vptr, td->length,
td->address.lowpart, cidx);
}
ndesc++;
cidx = T_NXT_IDX(cidx);
}
/*
* If we get here and m is NULL, we can send
* the the packet chain described by mb_head.
*/
if (m == NULL) {
/*
* Mark the last descriptor with EOP and tell the
* chip to insert a final checksum.
*/
wxtd_t *td = &sc->tdescriptors[T_PREV_IDX(cidx)];
td->cmd = TXCMD_EOP|TXCMD_IFCS;
sc->tbase[sc->tnxtfree].sidx = sc->tnxtfree;
sc->tbase[sc->tnxtfree].eidx = cidx;
sc->tbase[sc->tnxtfree].next = NULL;
if (sc->tbsyf) {
sc->tbsyl->next = &sc->tbase[sc->tnxtfree];
} else {
sc->tbsyf = &sc->tbase[sc->tnxtfree];
}
sc->tbsyl = &sc->tbase[sc->tnxtfree];
sc->tnxtfree = cidx;
sc->tactive = nactv;
ifp->if_timer = 10;
WRITE_CSR(sc, WXREG_TDT, cidx);
if (ifp->if_bpf)
bpf_mtap(WX_BPFTAP_ARG(ifp), mb_head);
continue;
}
/*
* Otherwise, we couldn't send this packet for some reason.
*
* If don't have a descriptor available, and this is a
* single mbuf packet, freeze output so that later we
* can restart when we have more room. Otherwise, we'll
* try and cluster the request. We've already tried to
* garbage collect completed descriptors.
*/
if (nactv == WX_MAX_TDESC && mb_head->m_next == NULL) {
sc->wx_xmitputback++;
ifp->if_flags |= IFF_OACTIVE;
IF_PREPEND(&ifp->if_snd, mb_head);
break;
}
/*
* Otherwise, it's either a fragment length somewhere in the
* chain that isn't at least WX_MIN_XPKT_SIZE in length or
* the number of fragments exceeds the number of descriptors
* available.
*
* We could try a variety of strategies here- if this is
* a length problem for single mbuf packet or a length problem
* for the last mbuf in a chain (we could just try and adjust
* it), but it's just simpler to try and cluster it.
*/
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
m_freem(mb_head);
break;
}
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
m_freem(mb_head);
break;
}
m_copydata(mb_head, 0, mb_head->m_pkthdr.len, mtod(m, caddr_t));
m->m_pkthdr.len = m->m_len = mb_head->m_pkthdr.len;
m_freem(mb_head);
mb_head = m;
sc->wx_xmitcluster++;
goto again;
}
if (sc->tactive == WX_MAX_TDESC) {
sc->wx_xmitblocked++;
ifp->if_flags |= IFF_OACTIVE;
}
}
/*
* Process interface interrupts.
*/
static int
wx_intr(arg)
void *arg;
{
wx_softc_t *sc = arg;
int claimed = 0;
/*
* Read interrupt cause register. Reading it clears bits.
*/
sc->wx_icr = READ_CSR(sc, WXREG_ICR);
if (sc->wx_icr) {
claimed++;
WX_DISABLE_INT(sc);
sc->wx_intr++;
if (sc->wx_icr & (WXISR_LSC|WXISR_RXSEQ)) {
wx_handle_link_intr(sc);
}
wx_handle_rxint(sc);
if (sc->tactive) {
wx_gc(sc);
}
if (sc->wx_if.if_snd.ifq_head != NULL) {
wx_start(&sc->wx_if);
}
WX_ENABLE_INT(sc);
}
return (claimed);
}
static void
wx_handle_link_intr(sc)
wx_softc_t *sc;
{
sc->wx_linkintr++;
printf("%s: link intr 0x%x\n", sc->wx_name, sc->wx_icr);
}
static void
wx_handle_rxint(sc)
wx_softc_t *sc;
{
struct ether_header *eh;
struct mbuf *m0, *mb, *pending[WX_MAX_RDESC];
struct ifnet *ifp = &sc->wx_if;
int npkts, ndesc, lidx, idx, tlen;
for (m0 = sc->rpending, tlen = ndesc = npkts = 0, idx = sc->rnxt,
lidx = R_PREV_IDX(idx); ndesc < WX_MAX_RDESC;
ndesc++, lidx = idx, idx = R_NXT_IDX(idx)) {
wxrd_t *rd;
rxpkt_t *rxpkt;
int length, offset, lastframe;
rd = &sc->rdescriptors[idx];
if ((rd->status & RDSTAT_DD) == 0) {
if (m0) {
if (sc->rpending == NULL) {
m0->m_pkthdr.len = tlen;
sc->rpending = m0;
} else {
m_freem(m0);
}
m0 = NULL;
}
if (sc->wx_debug) {
printf("WXRX: ndesc %d idx %d lidx %d\n",
ndesc, idx, lidx);
}
break;
}
if (rd->errors != 0) {
printf("%s: packet with errors (%x)\n",
sc->wx_name, rd->errors);
rd->status = 0;
ifp->if_ierrors++;
if (m0) {
m_freem(m0);
m0 = NULL;
if (sc->rpending) {
m_freem(sc->rpending);
sc->rpending = NULL;
}
}
continue;
}
rxpkt = &sc->rbase[idx];
mb = rxpkt->dptr;
if (mb == NULL) {
printf("%s: receive descriptor with no mbuf\n",
sc->wx_name);
(void) wx_get_rbuf(sc, rxpkt);
rd->status = 0;
ifp->if_ierrors++;
if (m0) {
m_freem(m0);
m0 = NULL;
if (sc->rpending) {
m_freem(sc->rpending);
sc->rpending = NULL;
}
}
continue;
}
/* XXX: Flush DMA for rxpkt */
if (wx_get_rbuf(sc, rxpkt)) {
sc->wx_rxnobuf++;
wx_rxdma_map(sc, rxpkt, mb);
ifp->if_ierrors++;
rd->status = 0;
if (m0) {
m_freem(m0);
m0 = NULL;
if (sc->rpending) {
m_freem(sc->rpending);
sc->rpending = NULL;
}
}
continue;
}
/*
* Save the completing packet's offset value and length
* and install the new one into the descriptor.
*/
lastframe = (rd->status & RDSTAT_EOP) != 0;
length = rd->length;
offset = rd->address.lowpart & 0xff;
bzero (rd, sizeof (*rd));
rd->address.lowpart = rxpkt->dma_addr + WX_RX_OFFSET_VALUE;
mb->m_len = length;
mb->m_data += offset;
mb->m_next = NULL;
if (m0 == NULL) {
m0 = mb;
tlen = length;
} else if (m0 == sc->rpending) {
/*
* Pick up where we left off before. If
* we have an offset (we're assuming the
* first frame has an offset), then we've
* lost sync somewhere along the line.
*/
if (offset) {
printf("%s: lost sync with partial packet\n",
sc->wx_name);
m_freem(sc->rpending);
sc->rpending = NULL;
m0 = mb;
tlen = length;
} else {
sc->rpending = NULL;
tlen = m0->m_pkthdr.len;
}
} else {
tlen += length;
}
if (sc->wx_debug) {
printf("%s: RDESC[%d] len %d off %d lastframe %d\n",
sc->wx_name, idx, mb->m_len, offset, lastframe);
}
if (m0 != mb)
m_cat(m0, mb);
if (lastframe == 0) {
continue;
}
m0->m_pkthdr.rcvif = ifp;
m0->m_pkthdr.len = tlen - WX_CRC_LENGTH;
mb->m_len -= WX_CRC_LENGTH;
eh = mtod(m0, struct ether_header *);
if ((ifp->if_flags & IFF_PROMISC) &&
(bcmp(eh->ether_dhost, sc->wx_enaddr, ETHER_ADDR_LEN) &&
(eh->ether_dhost[0] & 1) == 0)) {
m_freem(m0);
if (sc->rpending) {
m_freem(sc->rpending);
sc->rpending = NULL;
}
} else {
pending[npkts++] = m0;
}
m0 = NULL;
tlen = 0;
}
if (ndesc) {
WRITE_CSR(sc, WXREG_RDT0, lidx);
sc->rnxt = idx;
}
if (npkts) {
sc->wx_rxintr++;
}
for (idx = 0; idx < npkts; idx++) {
mb = pending[idx];
#ifndef __FreeBSD__
if (ifp->if_bpf) {
bpf_mtap(WX_BPFTAP_ARG(ifp), mb);
}
#endif
ifp->if_ipackets++;
if (sc->wx_debug) {
printf("%s: RECV packet length %d\n",
sc->wx_name, mb->m_pkthdr.len);
}
#ifdef __FreeBSD__
eh = mtod(mb, struct ether_header *);
m_adj(mb, sizeof (struct ether_header));
ether_input(ifp, eh, mb);
#else
(*ifp->if_input)(ifp, mb);
#endif
}
}
static void
wx_gc(sc)
wx_softc_t *sc;
{
struct ifnet *ifp = &sc->wx_if;
txpkt_t *txpkt = sc->tbsyf;
u_int32_t tdh = READ_CSR(sc, WXREG_TDH);
int s;
s = splimp();
while (txpkt != NULL) {
u_int32_t end = txpkt->eidx, cidx = tdh;
/*
* Normalize start..end indices to 2 *
* WX_MAX_TDESC range to eliminate wrap.
*/
if (txpkt->eidx < txpkt->sidx) {
end += WX_MAX_TDESC;
}
/*
* Normalize current chip index to 2 *
* WX_MAX_TDESC range to eliminate wrap.
*/
if (cidx < txpkt->sidx) {
cidx += WX_MAX_TDESC;
}
/*
* If the current chip index is between low and
* high indices for this packet, it's not finished
* transmitting yet. Because transmits are done FIFO,
* this means we're done garbage collecting too.
*/
if (txpkt->sidx <= cidx && cidx < txpkt->eidx) {
if (sc->wx_debug) {
printf("%s: TXGC %d..%d TDH %d\n", sc->wx_name,
txpkt->sidx, txpkt->eidx, tdh);
}
break;
}
ifp->if_opackets++;
if (txpkt->dptr) {
(void) m_freem(txpkt->dptr);
} else {
printf("%s: null mbuf in gc\n", sc->wx_name);
}
for (cidx = txpkt->sidx; cidx != txpkt->eidx;
cidx = T_NXT_IDX(cidx)) {
txpkt_t *tmp;
wxtd_t *td;
td = &sc->tdescriptors[cidx];
if (td->status & TXSTS_EC) {
printf("%s: excess collisions\n", sc->wx_name);
ifp->if_collisions++;
ifp->if_oerrors++;
}
if (td->status & TXSTS_LC) {
printf("%s: lost carrier\n", sc->wx_name);
ifp->if_oerrors++;
}
tmp = &sc->tbase[cidx];
if (sc->wx_debug) {
printf("%s: TXGC[%d] %p %d..%d done nact %d "
"TDH %d\n", sc->wx_name, cidx, tmp->dptr,
txpkt->sidx, txpkt->eidx, sc->tactive, tdh);
}
tmp->dptr = NULL;
if (sc->tactive == 0) {
printf("%s: nactive < 0?\n", sc->wx_name);
} else {
sc->tactive -= 1;
}
bzero(td, sizeof (*td));
}
sc->tbsyf = txpkt->next;
txpkt = sc->tbsyf;
}
if (sc->tactive < WX_MAX_TDESC) {
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
}
splx(s);
}
/*
* Update packet in/out/collision statistics.
*/
static void
wx_stats_update(arg)
void *arg;
{
wx_softc_t *sc = arg;
int s;
s = splimp();
wx_gc(sc);
splx(s);
/*
* Schedule another timeout one second from now.
*/
TIMEOUT(sc, wx_stats_update, sc, hz);
}
/*
* Stop and reinitialize the hardware
*/
static void
wx_hw_stop(sc)
wx_softc_t *sc;
{
u_int32_t icr;
if (sc->revision == 2) {
wx_mwi_whackon(sc);
}
WRITE_CSR(sc, WXREG_DCR, WXDCR_RST);
DELAY(20 * 1000);
WRITE_CSR(sc, WXREG_IMASK, ~0);
icr = READ_CSR(sc, WXREG_ICR);
if (sc->revision == 2) {
wx_mwi_unwhack(sc);
}
WX_DISABLE_INT(sc);
}
static void
wx_set_addr(sc, idx, mac)
wx_softc_t *sc;
int idx;
u_int8_t *mac;
{
u_int32_t t0, t1;
t0 = (mac[0]) | (mac[1] << 8) | (mac[2] << 16) | (mac[3] << 24);
t1 = (mac[4] << 0) | (mac[5] << 8);
t1 |= WX_RAL_AV;
WRITE_CSR(sc, WXREG_RAL_LO(idx), t0);
WRITE_CSR(sc, WXREG_RAL_HI(idx), t1);
}
static int
wx_hw_initialize(sc)
wx_softc_t *sc;
{
int i;
WRITE_CSR(sc, WXREG_VET, 0);
for (i = 0; i < (WX_VLAN_TAB_SIZE << 2); i += 4) {
WRITE_CSR(sc, (WXREG_VFTA + i), 0);
}
if (sc->revision == 2) {
wx_mwi_whackon(sc);
WRITE_CSR(sc, WXREG_RCTL, WXRCTL_RST);
DELAY(5 * 1000);
}
/*
* Load the first receiver address with our MAC address,
* and load as many multicast addresses as can fit into
* the receive address array.
*/
wx_set_addr(sc, 0, sc->wx_enaddr);
for (i = 1; i <= sc->wx_nmca; i++) {
if (i >= WX_RAL_TAB_SIZE) {
break;
} else {
wx_set_addr(sc, i, sc->wx_mcaddr[i-1]);
}
}
while (i < WX_RAL_TAB_SIZE) {
WRITE_CSR(sc, WXREG_RAL_LO(i), 0);
WRITE_CSR(sc, WXREG_RAL_HI(i), 0);
i++;
}
if (sc->revision == 2) {
WRITE_CSR(sc, WXREG_RCTL, 0);
DELAY(1 * 1000);
wx_mwi_unwhack(sc);
}
/*
* Clear out the hashed multicast table array.
*/
for (i = 0; i < WX_MC_TAB_SIZE; i++) {
WRITE_CSR(sc, WXREG_MTA + (sizeof (u_int32_t) * 4), 0);
}
if (sc->wx_dcr & (WXDCR_RFCE|WXDCR_TFCE)) {
WRITE_CSR(sc, WXREG_FCAL, FC_FRM_CONST_LO);
WRITE_CSR(sc, WXREG_FCAH, FC_FRM_CONST_HI);
WRITE_CSR(sc, WXREG_FCT, FC_TYP_CONST);
} else {
WRITE_CSR(sc, WXREG_FCAL, 0);
WRITE_CSR(sc, WXREG_FCAH, 0);
WRITE_CSR(sc, WXREG_FCT, 0);
}
WRITE_CSR(sc, WXREG_FLOW_XTIMER, WX_XTIMER_DFLT);
if (sc->revision == 2) {
WRITE_CSR(sc, WXREG_FLOW_RCV_HI, 0);
WRITE_CSR(sc, WXREG_FLOW_RCV_LO, 0);
} else {
WRITE_CSR(sc, WXREG_FLOW_RCV_HI, WX_RCV_FLOW_HI_DFLT);
WRITE_CSR(sc, WXREG_FLOW_RCV_LO, WX_RCV_FLOW_LO_DFLT);
}
WRITE_CSR(sc, WXREG_XMIT_CFGW, WXTXCW_DEFAULT);
WRITE_CSR(sc, WXREG_DCR, sc->wx_dcr);
DELAY(50 * 1000);
/*
* The pin stuff is all FM from the Linux driver.
*/
if ((READ_CSR(sc, WXREG_DCR) & WXDCR_SWDPIN1) == 0) {
for (i = 0; i < 500; i++) {
DELAY(10 * 1000);
if (READ_CSR(sc, WXREG_DSR) & WXDSR_LU) {
sc->linkup = 1;
break;
}
}
} else {
printf("%s: swdpio did not clear\n", sc->wx_name);
return (-1);
}
if (sc->linkup == 0) {
printf("%s: link never came up\n", sc->wx_name);
return (-1);
}
sc->wx_ienable = WXIENABLE_DEFAULT;
return (0);
}
/*
* Stop the interface. Cancels the statistics updater and resets the interface.
*/
static void
wx_stop(sc)
wx_softc_t *sc;
{
txpkt_t *txp;
rxpkt_t *rxp;
struct ifnet *ifp = &sc->wx_if;
/*
* Cancel stats updater.
*/
UNTIMEOUT(wx_stats_update, sc, sc);
/*
* Reset the chip
*/
wx_hw_stop(sc);
/*
* Release any xmit buffers.
*/
for (txp = sc->tbase; txp && txp < &sc->tbase[WX_MAX_TDESC]; txp++) {
if (txp->dptr) {
m_free(txp->dptr);
txp->dptr = NULL;
}
}
/*
* Free all the receive buffers.
*/
for (rxp = sc->rbase; rxp && rxp < &sc->rbase[WX_MAX_RDESC]; rxp++) {
if (rxp->dptr) {
m_free(rxp->dptr);
rxp->dptr = NULL;
}
}
if (sc->rpending) {
m_freem(sc->rpending);
sc->rpending = NULL;
}
/*
* And we're outta here...
*/
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
ifp->if_timer = 0;
}
/*
* Watchdog/transmission transmit timeout handler.
*/
static void
wx_watchdog(ifp)
struct ifnet *ifp;
{
wx_softc_t *sc = SOFTC_IFP(ifp);
printf("%s: device timeout\n", sc->wx_name);
ifp->if_oerrors++;
if (wx_init(sc)) {
printf("%s: could not re-init device\n", sc->wx_name);
VTIMEOUT(sc, (void (*)(void *))wx_init, sc, hz);
}
}
static int
wx_init(xsc)
void *xsc;
{
struct ifmedia *ifm;
wx_softc_t *sc = xsc;
struct ifnet *ifp = &sc->wx_if;
rxpkt_t *rxpkt;
wxrd_t *rd;
size_t len;
int s, i, bflags;
s = splimp();
/*
* Cancel any pending I/O by resetting things.
* wx_stop will free any allocated mbufs.
*/
wx_stop(sc);
/*
* Reset the hardware. All network addresses loaded here, but
* neither the receiver nor the transmitter are enabled.
*/
if (wx_hw_initialize(sc)) {
return (EIO);
}
/*
* Set up the receive ring stuff.
*/
len = sizeof (wxrd_t) * WX_MAX_RDESC;
bzero(sc->rdescriptors, len);
for (rxpkt = sc->rbase, i = 0; rxpkt != NULL && i < WX_MAX_RDESC;
i += RXINCR, rxpkt++) {
rd = &sc->rdescriptors[i];
if (wx_get_rbuf(sc, rxpkt)) {
break;
}
rd->address.lowpart = rxpkt->dma_addr + WX_RX_OFFSET_VALUE;
}
if (i != WX_MAX_RDESC) {
printf("%s: could not set up rbufs\n", sc->wx_name);
wx_stop(sc);
return (ENOMEM);
}
/*
* Set up transmit parameters and enable the transmitter.
*/
sc->tnxtfree = sc->tactive = 0;
sc->tbsyf = sc->tbsyl = NULL;
WRITE_CSR(sc, WXREG_TCTL, 0);
DELAY(5 * 1000);
WRITE_CSR(sc, WXREG_TDBA_LO,
vtophys((vm_offset_t)&sc->tdescriptors[0]));
WRITE_CSR(sc, WXREG_TDBA_HI, 0);
WRITE_CSR(sc, WXREG_TDLEN, WX_MAX_TDESC * sizeof (wxtd_t));
WRITE_CSR(sc, WXREG_TDH, 0);
WRITE_CSR(sc, WXREG_TDT, 0);
WRITE_CSR(sc, WXREG_TQSA_HI, 0);
WRITE_CSR(sc, WXREG_TQSA_LO, 0);
WRITE_CSR(sc, WXREG_TIPG, WX_TIPG_DFLT);
WRITE_CSR(sc, WXREG_TIDV, sc->wx_txint_delay);
WRITE_CSR(sc, WXREG_TCTL, (WXTCTL_CT(WX_COLLISION_THRESHOLD) |
WXTCTL_COLD(WX_FDX_COLLISION_DX) | WXTCTL_EN));
/*
* Set up receive parameters and enable the receiver.
*/
sc->rnxt = 0;
WRITE_CSR(sc, WXREG_RCTL, 0);
DELAY(5 * 1000);
WRITE_CSR(sc, WXREG_RDTR0, WXRDTR_FPD);
WRITE_CSR(sc, WXREG_RDBA0_LO,
vtophys((vm_offset_t)&sc->rdescriptors[0]));
WRITE_CSR(sc, WXREG_RDBA0_HI, 0);
WRITE_CSR(sc, WXREG_RDLEN0, WX_MAX_RDESC * sizeof (wxrd_t));
WRITE_CSR(sc, WXREG_RDH0, 0);
WRITE_CSR(sc, WXREG_RDT0, (WX_MAX_RDESC - RXINCR));
WRITE_CSR(sc, WXREG_RDTR1, 0);
WRITE_CSR(sc, WXREG_RDBA1_LO, 0);
WRITE_CSR(sc, WXREG_RDBA1_HI, 0);
WRITE_CSR(sc, WXREG_RDLEN1, 0);
WRITE_CSR(sc, WXREG_RDH1, 0);
WRITE_CSR(sc, WXREG_RDT1, 0);
if (ifp->if_mtu > ETHERMTU) {
printf("%s: enabling for jumbo packets\n", sc->wx_name);
bflags = WXRCTL_EN | WXRCTL_LPE | WXRCTL_2KRBUF;
} else {
bflags = WXRCTL_EN | WXRCTL_2KRBUF;
}
WRITE_CSR(sc, WXREG_RCTL, bflags |
((ifp->if_flags & IFF_BROADCAST) ? WXRCTL_BAM : 0) |
((ifp->if_flags & IFF_PROMISC) ? WXRCTL_UPE : 0) |
((sc->all_mcasts) ? WXRCTL_MPE : 0));
/*
* Enable Interrupts
*/
WX_ENABLE_INT(sc);
/*
* Mark that we're up and running...
*/
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
ifm = &sc->wx_media;
i = ifm->ifm_media;
ifm->ifm_media = ifm->ifm_cur->ifm_media;
wx_ifmedia_upd(ifp);
ifm->ifm_media = i;
splx(s);
/*
* Start stats updater.
*/
TIMEOUT(sc, wx_stats_update, sc, hz);
/*
* And we're outta here...
*/
return (0);
}
/*
* Get a receive buffer for our use (and dma map the data area).
*
* This chip can have buffers be 256, 512, 1024 or 2048 bytes in size.
* It wants them aligned on 256 byte boundaries, but can actually cope
* with an offset in the first 255 bytes of the head of a receive frame.
*
* We'll allocate a MCLBYTE sized cluster but *not* adjust the data pointer
* by any alignment value. Instead, we'll tell the chip to offset by any
* alignment and we'll catch the alignment on the backend at interrupt time.
*/
static void
wx_rxdma_map(sc, rxpkt, mb)
wx_softc_t *sc;
rxpkt_t *rxpkt;
struct mbuf *mb;
{
rxpkt->dptr = mb;
rxpkt->dma_addr = vtophys(mtod(mb, vm_offset_t));
}
static int
wx_get_rbuf(sc, rxpkt)
wx_softc_t *sc;
rxpkt_t *rxpkt;
{
struct mbuf *mb;
MGETHDR(mb, M_DONTWAIT, MT_DATA);
if (mb == NULL) {
rxpkt->dptr = NULL;
return (-1);
}
MCLGET(mb, M_DONTWAIT);
if ((mb->m_flags & M_EXT) == 0) {
m_freem(mb);
rxpkt->dptr = NULL;
return (-1);
}
wx_rxdma_map(sc, rxpkt, mb);
return (0);
}
static int
wx_ioctl(ifp, command, data)
struct ifnet *ifp;
IOCTL_CMD_TYPE command;
caddr_t data;
{
wx_softc_t *sc = SOFTC_IFP(ifp);
struct ifreq *ifr = (struct ifreq *) data;
int s, error = 0;
s = splimp();
switch (command) {
case SIOCSIFADDR:
#if !defined(__NetBSD__)
case SIOCGIFADDR:
#endif
error = ether_ioctl(ifp, command, data);
break;
#ifdef SIOCGIFMTU
case SIOCSIFMTU:
if (ifr->ifr_mtu > WX_MAXMTU || ifr->ifr_mtu < ETHERMIN) {
error = EINVAL;
} else if (ifp->if_mtu != ifr->ifr_mtu) {
ifp->if_mtu = ifr->ifr_mtu;
error = wx_init(sc);
}
break;
#endif
case SIOCSIFFLAGS:
sc->all_mcasts = (ifp->if_flags & IFF_ALLMULTI) ? 1 : 0;
/*
* If interface is marked up and not running, then start it.
* If it is marked down and running, stop it.
* If it's up then re-initialize it. This is so flags
* such as IFF_PROMISC are handled.
*/
if (ifp->if_flags & IFF_UP) {
error = wx_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING) {
wx_stop(sc);
}
}
break;
#ifdef SIOCADDMULTI
case SIOCADDMULTI:
case SIOCDELMULTI:
#if defined(__NetBSD__)
{
int all_mc_change = (sc->all_mcasts ==
((ifp->if_flags & IFF_ALLMULTI) ? 1 : 0));
error = (command == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->w.ethercom) :
ether_delmulti(ifr, &sc->w.ethercom);
if (error != ENETRESET && all_mc_change == 0) {
break;
}
}
#endif
sc->all_mcasts = (ifp->if_flags & IFF_ALLMULTI) ? 1 : 0;
error = wx_mc_setup(sc);
break;
#endif
#ifdef SIOCGIFMEDIA
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->wx_media, command);
break;
#endif
default:
error = EINVAL;
}
(void) splx(s);
return (error);
}
static int
wx_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct wx_softc *sc = SOFTC_IFP(ifp);
struct ifmedia *ifm = &sc->wx_media;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
return (0);
}
static void
wx_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct wx_softc *sc = SOFTC_IFP(ifp);
ifmr->ifm_status = IFM_AVALID;
ifmr->ifm_active = IFM_ETHER;
if (sc->linkup == 0)
return;
ifmr->ifm_status |= IFM_ACTIVE|IFM_1000_SX;
if (READ_CSR(sc, WXREG_DSR) & WXDSR_FD)
ifmr->ifm_active |= IFM_FDX;
}
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