void
bce_attach(struct device *parent, struct device *self, void *aux)
{
struct bce_softc *sc = (struct bce_softc *) self;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
caddr_t kva;
bus_dma_segment_t seg;
int rseg;
struct ifnet *ifp;
pcireg_t memtype;
bus_addr_t memaddr;
bus_size_t memsize;
int pmreg;
pcireg_t pmode;
int error;
int i;
sc->bce_pa = *pa;
sc->bce_dmatag = pa->pa_dmat;
/*
* Map control/status registers.
*/
memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BCE_PCI_BAR0);
if (pci_mapreg_map(pa, BCE_PCI_BAR0, memtype, 0, &sc->bce_btag,
&sc->bce_bhandle, &memaddr, &memsize, 0)) {
printf(": unable to find mem space\n");
return;
}
/* Get it out of power save mode if needed. */
if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) {
pmode = pci_conf_read(pc, pa->pa_tag, pmreg + 4) & 0x3;
if (pmode == 3) {
/*
* The card has lost all configuration data in
* this state, so punt.
*/
printf(": unable to wake up from power state D3\n");
return;
}
if (pmode != 0) {
printf(": waking up from power state D%d\n",
pmode);
pci_conf_write(pc, pa->pa_tag, pmreg + 4, 0);
}
}
if (pci_intr_map(pa, &ih)) {
printf(": couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
sc->bce_intrhand = pci_intr_establish(pc, ih, IPL_NET, bce_intr, sc,
self->dv_xname);
if (sc->bce_intrhand == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
/* reset the chip */
bce_reset(sc);
/*
* Allocate DMA-safe memory for ring descriptors.
* The receive, and transmit rings can not share the same
* 4k space, however both are allocated at once here.
*/
/*
* XXX PAGE_SIZE is wasteful; we only need 1KB + 1KB, but
* due to the limition above. ??
*/
if ((error = bus_dmamem_alloc(sc->bce_dmatag,
2 * PAGE_SIZE, PAGE_SIZE, 2 * PAGE_SIZE,
&seg, 1, &rseg, BUS_DMA_NOWAIT))) {
printf(": unable to alloc space for ring descriptors, "
"error = %d\n", error);
return;
}
/* map ring space to kernel */
if ((error = bus_dmamem_map(sc->bce_dmatag, &seg, rseg,
2 * PAGE_SIZE, &kva, BUS_DMA_NOWAIT))) {
printf(": unable to map DMA buffers, error = %d\n",
error);
bus_dmamem_free(sc->bce_dmatag, &seg, rseg);
return;
}
/* create a dma map for the ring */
if ((error = bus_dmamap_create(sc->bce_dmatag,
2 * PAGE_SIZE, 1, 2 * PAGE_SIZE, 0, BUS_DMA_NOWAIT,
&sc->bce_ring_map))) {
printf(": unable to create ring DMA map, error = %d\n",
error);
bus_dmamem_unmap(sc->bce_dmatag, kva, 2 * PAGE_SIZE);
bus_dmamem_free(sc->bce_dmatag, &seg, rseg);
return;
}
/* connect the ring space to the dma map */
if (bus_dmamap_load(sc->bce_dmatag, sc->bce_ring_map, kva,
2 * PAGE_SIZE, NULL, BUS_DMA_NOWAIT)) {
printf(": unable to load ring DMA map\n");
bus_dmamap_destroy(sc->bce_dmatag, sc->bce_ring_map);
bus_dmamem_unmap(sc->bce_dmatag, kva, 2 * PAGE_SIZE);
bus_dmamem_free(sc->bce_dmatag, &seg, rseg);
return;
}
/* save the ring space in softc */
sc->bce_rx_ring = (struct bce_dma_slot *) kva;
sc->bce_tx_ring = (struct bce_dma_slot *) (kva + PAGE_SIZE);
/* Create the transmit buffer DMA maps. */
for (i = 0; i < BCE_NTXDESC; i++) {
if ((error = bus_dmamap_create(sc->bce_dmatag, MCLBYTES,
BCE_NTXFRAGS, MCLBYTES, 0, 0, &sc->bce_cdata.bce_tx_map[i])) != 0) {
printf(": unable to create tx DMA map, error = %d\n",
error);
}
sc->bce_cdata.bce_tx_chain[i] = NULL;
}
/* Create the receive buffer DMA maps. */
for (i = 0; i < BCE_NRXDESC; i++) {
if ((error = bus_dmamap_create(sc->bce_dmatag, MCLBYTES, 1,
MCLBYTES, 0, 0, &sc->bce_cdata.bce_rx_map[i])) != 0) {
printf(": unable to create rx DMA map, error = %d\n",
error);
}
sc->bce_cdata.bce_rx_chain[i] = NULL;
}
/* Set up ifnet structure */
ifp = &sc->bce_ac.ac_if;
strlcpy(ifp->if_xname, sc->bce_dev.dv_xname, IF_NAMESIZE);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = bce_ioctl;
ifp->if_start = bce_start;
ifp->if_watchdog = bce_watchdog;
ifp->if_init = bce_init;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capabilities = IFCAP_VLAN_MTU;
/* MAC address */
sc->bce_ac.ac_enaddr[0] =
bus_space_read_1(sc->bce_btag, sc->bce_bhandle, BCE_ENET0);
sc->bce_ac.ac_enaddr[1] =
bus_space_read_1(sc->bce_btag, sc->bce_bhandle, BCE_ENET1);
sc->bce_ac.ac_enaddr[2] =
bus_space_read_1(sc->bce_btag, sc->bce_bhandle, BCE_ENET2);
sc->bce_ac.ac_enaddr[3] =
bus_space_read_1(sc->bce_btag, sc->bce_bhandle, BCE_ENET3);
sc->bce_ac.ac_enaddr[4] =
bus_space_read_1(sc->bce_btag, sc->bce_bhandle, BCE_ENET4);
sc->bce_ac.ac_enaddr[5] =
bus_space_read_1(sc->bce_btag, sc->bce_bhandle, BCE_ENET5);
printf(": %s, address %s\n", intrstr,
ether_sprintf(sc->bce_ac.ac_enaddr));
/* Initialize our media structures and probe the MII. */
sc->bce_mii.mii_ifp = ifp;
sc->bce_mii.mii_readreg = bce_mii_read;
sc->bce_mii.mii_writereg = bce_mii_write;
sc->bce_mii.mii_statchg = bce_statchg;
ifmedia_init(&sc->bce_mii.mii_media, 0, bce_mediachange,
bce_mediastatus);
mii_attach(&sc->bce_dev, &sc->bce_mii, 0xffffffff, MII_PHY_ANY,
MII_OFFSET_ANY, 0);
if (LIST_FIRST(&sc->bce_mii.mii_phys) == NULL) {
ifmedia_add(&sc->bce_mii.mii_media, IFM_ETHER | IFM_NONE, 0, NULL);
ifmedia_set(&sc->bce_mii.mii_media, IFM_ETHER | IFM_NONE);
} else
ifmedia_set(&sc->bce_mii.mii_media, IFM_ETHER | IFM_AUTO);
/* get the phy */
sc->bce_phy = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_PHY) & 0x1f;
/*
* Enable activity led.
* XXX This should be in a phy driver, but not currently.
*/
bce_mii_write((struct device *) sc, 1, 26, /* MAGIC */
bce_mii_read((struct device *) sc, 1, 26) & 0x7fff); /* MAGIC */
/* enable traffic meter led mode */
bce_mii_write((struct device *) sc, 1, 27, /* MAGIC */
bce_mii_read((struct device *) sc, 1, 27) | (1 << 6)); /* MAGIC */
/* Attach the interface */
if_attach(ifp);
ether_ifattach(ifp);
timeout_set(&sc->bce_timeout, bce_tick, sc);
}
/* initialize the interface */
int
bce_init(struct ifnet *ifp)
{
struct bce_softc *sc = ifp->if_softc;
u_int32_t reg_win;
int error;
int i;
/* Cancel any pending I/O. */
bce_stop(ifp, 0);
/* enable pci inerrupts, bursts, and prefetch */
/* remap the pci registers to the Sonics config registers */
/* save the current map, so it can be restored */
reg_win = pci_conf_read(sc->bce_pa.pa_pc, sc->bce_pa.pa_tag,
BCE_REG_WIN);
/* set register window to Sonics registers */
pci_conf_write(sc->bce_pa.pa_pc, sc->bce_pa.pa_tag, BCE_REG_WIN,
BCE_SONICS_WIN);
/* enable SB to PCI interrupt */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_SBINTVEC,
bus_space_read_4(sc->bce_btag, sc->bce_bhandle, BCE_SBINTVEC) |
SBIV_ENET0);
/* enable prefetch and bursts for sonics-to-pci translation 2 */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_SPCI_TR2,
bus_space_read_4(sc->bce_btag, sc->bce_bhandle, BCE_SPCI_TR2) |
SBTOPCI_PREF | SBTOPCI_BURST);
/* restore to ethernet register space */
pci_conf_write(sc->bce_pa.pa_pc, sc->bce_pa.pa_tag, BCE_REG_WIN,
reg_win);
/* Reset the chip to a known state. */
bce_reset(sc);
/* Initialize transmit descriptors */
memset(sc->bce_tx_ring, 0, BCE_NTXDESC * sizeof(struct bce_dma_slot));
sc->bce_txsnext = 0;
sc->bce_txin = 0;
/* enable crc32 generation and set proper LED modes */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_MACCTL,
bus_space_read_4(sc->bce_btag, sc->bce_bhandle, BCE_MACCTL) |
BCE_EMC_CRC32_ENAB | BCE_EMC_LED);
/* reset or clear powerdown control bit */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_MACCTL,
bus_space_read_4(sc->bce_btag, sc->bce_bhandle, BCE_MACCTL) &
~BCE_EMC_PDOWN);
/* setup DMA interrupt control */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_DMAI_CTL, 1 << 24); /* MAGIC */
/* setup packet filter */
bce_set_filter(ifp);
/* set max frame length, account for possible VLAN tag */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_RX_MAX,
ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN);
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_TX_MAX,
ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN);
/* set tx watermark */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_TX_WATER, 56);
/* enable transmit */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_DMA_TXCTL, XC_XE);
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_DMA_TXADDR,
sc->bce_ring_map->dm_segs[0].ds_addr + PAGE_SIZE + 0x40000000); /* MAGIC */
/*
* Give the receive ring to the chip, and
* start the receive DMA engine.
*/
sc->bce_rxin = 0;
/* clear the rx descriptor ring */
memset(sc->bce_rx_ring, 0, BCE_NRXDESC * sizeof(struct bce_dma_slot));
/* enable receive */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_DMA_RXCTL,
BCE_PREPKT_HEADER_SIZE << 1 | XC_XE);
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_DMA_RXADDR,
sc->bce_ring_map->dm_segs[0].ds_addr + 0x40000000); /* MAGIC */
/* Initialize receive descriptors */
for (i = 0; i < BCE_NRXDESC; i++) {
if (sc->bce_cdata.bce_rx_chain[i] == NULL) {
if ((error = bce_add_rxbuf(sc, i)) != 0) {
printf("%s: unable to allocate or map rx(%d) "
"mbuf, error = %d\n", sc->bce_dev.dv_xname,
i, error);
bce_rxdrain(sc);
return (error);
}
} else
BCE_INIT_RXDESC(sc, i);
}
/* Enable interrupts */
sc->bce_intmask =
I_XI | I_RI | I_XU | I_RO | I_RU | I_DE | I_PD | I_PC | I_TO;
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_INT_MASK,
sc->bce_intmask);
/* start the receive dma */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_DMA_RXDPTR,
BCE_NRXDESC * sizeof(struct bce_dma_slot));
/* set media */
mii_mediachg(&sc->bce_mii);
/* turn on the ethernet mac */
bus_space_write_4(sc->bce_btag, sc->bce_bhandle, BCE_ENET_CTL,
bus_space_read_4(sc->bce_btag, sc->bce_bhandle,
BCE_ENET_CTL) | EC_EE);
/* start timer */
timeout_add(&sc->bce_timeout, hz);
/* mark as running, and no outputs active */
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
return 0;
}
static void
bce_attach(device_t parent, device_t self, void *aux)
{
struct bce_softc *sc = device_private(self);
struct pci_attach_args *pa = aux;
const struct bce_product *bp;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
uint32_t command;
pcireg_t memtype, pmode;
bus_addr_t memaddr;
bus_size_t memsize;
void *kva;
bus_dma_segment_t seg;
int error, i, pmreg, rseg;
struct ifnet *ifp;
char intrbuf[PCI_INTRSTR_LEN];
sc->bce_dev = self;
bp = bce_lookup(pa);
KASSERT(bp != NULL);
sc->bce_pa = *pa;
/* BCM440x can only address 30 bits (1GB) */
if (bus_dmatag_subregion(pa->pa_dmat, 0, (1 << 30),
&(sc->bce_dmatag), BUS_DMA_NOWAIT) != 0) {
aprint_error_dev(self,
"WARNING: failed to restrict dma range,"
" falling back to parent bus dma range\n");
sc->bce_dmatag = pa->pa_dmat;
}
aprint_naive(": Ethernet controller\n");
aprint_normal(": %s\n", bp->bp_name);
/*
* Map control/status registers.
*/
command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
command |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE;
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
if (!(command & PCI_COMMAND_MEM_ENABLE)) {
aprint_error_dev(self, "failed to enable memory mapping!\n");
return;
}
memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BCE_PCI_BAR0);
switch (memtype) {
case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
if (pci_mapreg_map(pa, BCE_PCI_BAR0, memtype, 0, &sc->bce_btag,
&sc->bce_bhandle, &memaddr, &memsize) == 0)
break;
default:
aprint_error_dev(self, "unable to find mem space\n");
return;
}
/* Get it out of power save mode if needed. */
if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, NULL)) {
pmode = pci_conf_read(pc, pa->pa_tag, pmreg + 4) & 0x3;
if (pmode == 3) {
/*
* The card has lost all configuration data in
* this state, so punt.
*/
aprint_error_dev(self,
"unable to wake up from power state D3\n");
return;
}
if (pmode != 0) {
aprint_normal_dev(self,
"waking up from power state D%d\n", pmode);
pci_conf_write(pc, pa->pa_tag, pmreg + 4, 0);
}
}
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(self, "couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
sc->bce_intrhand = pci_intr_establish(pc, ih, IPL_NET, bce_intr, sc);
if (sc->bce_intrhand == NULL) {
aprint_error_dev(self, "couldn't establish interrupt\n");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}
aprint_normal_dev(self, "interrupting at %s\n", intrstr);
/* reset the chip */
bce_reset(sc);
/*
* Allocate DMA-safe memory for ring descriptors.
* The receive, and transmit rings can not share the same
* 4k space, however both are allocated at once here.
*/
/*
* XXX PAGE_SIZE is wasteful; we only need 1KB + 1KB, but
* due to the limition above. ??
*/
if ((error = bus_dmamem_alloc(sc->bce_dmatag,
2 * PAGE_SIZE, PAGE_SIZE, 2 * PAGE_SIZE,
&seg, 1, &rseg, BUS_DMA_NOWAIT))) {
aprint_error_dev(self,
"unable to alloc space for ring descriptors, error = %d\n",
error);
return;
}
/* map ring space to kernel */
if ((error = bus_dmamem_map(sc->bce_dmatag, &seg, rseg,
2 * PAGE_SIZE, &kva, BUS_DMA_NOWAIT))) {
aprint_error_dev(self,
"unable to map DMA buffers, error = %d\n", error);
bus_dmamem_free(sc->bce_dmatag, &seg, rseg);
return;
}
/* create a dma map for the ring */
if ((error = bus_dmamap_create(sc->bce_dmatag,
2 * PAGE_SIZE, 1, 2 * PAGE_SIZE, 0, BUS_DMA_NOWAIT,
&sc->bce_ring_map))) {
aprint_error_dev(self,
"unable to create ring DMA map, error = %d\n", error);
bus_dmamem_unmap(sc->bce_dmatag, kva, 2 * PAGE_SIZE);
bus_dmamem_free(sc->bce_dmatag, &seg, rseg);
return;
}
/* connect the ring space to the dma map */
if (bus_dmamap_load(sc->bce_dmatag, sc->bce_ring_map, kva,
2 * PAGE_SIZE, NULL, BUS_DMA_NOWAIT)) {
bus_dmamap_destroy(sc->bce_dmatag, sc->bce_ring_map);
bus_dmamem_unmap(sc->bce_dmatag, kva, 2 * PAGE_SIZE);
bus_dmamem_free(sc->bce_dmatag, &seg, rseg);
return;
}
/* save the ring space in softc */
sc->bce_rx_ring = (struct bce_dma_slot *) kva;
sc->bce_tx_ring = (struct bce_dma_slot *) ((char *)kva + PAGE_SIZE);
/* Create the transmit buffer DMA maps. */
for (i = 0; i < BCE_NTXDESC; i++) {
if ((error = bus_dmamap_create(sc->bce_dmatag, MCLBYTES,
BCE_NTXFRAGS, MCLBYTES, 0, 0, &sc->bce_cdata.bce_tx_map[i])) != 0) {
aprint_error_dev(self,
"unable to create tx DMA map, error = %d\n", error);
}
sc->bce_cdata.bce_tx_chain[i] = NULL;
}
/* Create the receive buffer DMA maps. */
for (i = 0; i < BCE_NRXDESC; i++) {
if ((error = bus_dmamap_create(sc->bce_dmatag, MCLBYTES, 1,
MCLBYTES, 0, 0, &sc->bce_cdata.bce_rx_map[i])) != 0) {
aprint_error_dev(self,
"unable to create rx DMA map, error = %d\n", error);
}
sc->bce_cdata.bce_rx_chain[i] = NULL;
}
/* Set up ifnet structure */
ifp = &sc->ethercom.ec_if;
strcpy(ifp->if_xname, device_xname(self));
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = bce_ioctl;
ifp->if_start = bce_start;
ifp->if_watchdog = bce_watchdog;
ifp->if_init = bce_init;
ifp->if_stop = bce_stop;
IFQ_SET_READY(&ifp->if_snd);
/* Initialize our media structures and probe the MII. */
sc->bce_mii.mii_ifp = ifp;
sc->bce_mii.mii_readreg = bce_mii_read;
sc->bce_mii.mii_writereg = bce_mii_write;
sc->bce_mii.mii_statchg = bce_statchg;
sc->ethercom.ec_mii = &sc->bce_mii;
ifmedia_init(&sc->bce_mii.mii_media, 0, ether_mediachange,
ether_mediastatus);
mii_attach(sc->bce_dev, &sc->bce_mii, 0xffffffff, MII_PHY_ANY,
MII_OFFSET_ANY, MIIF_FORCEANEG|MIIF_DOPAUSE);
if (LIST_FIRST(&sc->bce_mii.mii_phys) == NULL) {
ifmedia_add(&sc->bce_mii.mii_media, IFM_ETHER | IFM_NONE, 0, NULL);
ifmedia_set(&sc->bce_mii.mii_media, IFM_ETHER | IFM_NONE);
} else
ifmedia_set(&sc->bce_mii.mii_media, IFM_ETHER | IFM_AUTO);
/* get the phy */
sc->bce_phy = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_PHY) & 0x1f;
/*
* Enable activity led.
* XXX This should be in a phy driver, but not currently.
*/
bce_mii_write(sc->bce_dev, 1, 26, /* MAGIC */
bce_mii_read(sc->bce_dev, 1, 26) & 0x7fff); /* MAGIC */
/* enable traffic meter led mode */
bce_mii_write(sc->bce_dev, 1, 27, /* MAGIC */
bce_mii_read(sc->bce_dev, 1, 27) | (1 << 6)); /* MAGIC */
/* Attach the interface */
if_attach(ifp);
sc->enaddr[0] = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_ENET0);
sc->enaddr[1] = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_ENET1);
sc->enaddr[2] = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_ENET2);
sc->enaddr[3] = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_ENET3);
sc->enaddr[4] = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_ENET4);
sc->enaddr[5] = bus_space_read_1(sc->bce_btag, sc->bce_bhandle,
BCE_MAGIC_ENET5);
aprint_normal_dev(self, "Ethernet address %s\n",
ether_sprintf(sc->enaddr));
ether_ifattach(ifp, sc->enaddr);
rnd_attach_source(&sc->rnd_source, device_xname(self),
RND_TYPE_NET, 0);
callout_init(&sc->bce_timeout, 0);
if (pmf_device_register(self, NULL, bce_resume))
pmf_class_network_register(self, ifp);
else
aprint_error_dev(self, "couldn't establish power handler\n");
}
