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NetBSD/sys/dev/pci/if_lmc_common.c

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/* $NetBSD: if_lmc_common.c,v 1.8 2001/11/13 07:48:44 lukem Exp $ */
/*-
* Copyright (c) 1997-1999 LAN Media Corporation (LMC)
* All rights reserved. www.lanmedia.com
*
* This code is written by Michael Graff <graff@vix.com> for LMC.
* The code is derived from permitted modifications to software created
* by Matt Thomas (matt@3am-software.com).
*
* 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 marketing or advertising materials mentioning features or
* use of this software must display the following acknowledgement:
* This product includes software developed by LAN Media Corporation
* and its contributors.
* 4. Neither the name of LAN Media Corporation 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 LAN MEDIA CORPORATION 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) 1994-1997 Matt Thomas (matt@3am-software.com)
* 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. The name of the author 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: if_lmc_common.c,v 1.8 2001/11/13 07:48:44 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/proc.h> /* only for declaration of wakeup() used by vm.h */
#if defined(__FreeBSD__)
#include <machine/clock.h>
#elif defined(__bsdi__) || defined(__NetBSD__)
#include <sys/device.h>
#endif
#if defined(__NetBSD__)
#include <dev/pci/pcidevs.h>
#include "rnd.h"
#if NRND > 0
#include <sys/rnd.h>
#endif
#endif
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/netisr.h>
#include "bpfilter.h"
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#if defined(__FreeBSD__) || defined(__NetBSD__)
#include <net/if_sppp.h>
#endif
#if defined(__bsdi__)
#if INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#endif
#include <net/netisr.h>
#include <net/if.h>
#include <net/netisr.h>
#include <net/if_types.h>
#include <net/if_p2p.h>
#include <net/if_c_hdlc.h>
#endif
#if defined(__NetBSD__)
#include <uvm/uvm_extern.h>
#endif
#if defined(__FreeBSD__)
#include <vm/vm.h>
#include <vm/pmap.h>
#include <pci.h>
#if NPCI > 0
#include <pci/pcivar.h>
#include <pci/dc21040reg.h>
#endif
#endif /* __FreeBSD__ */
#if defined(__bsdi__)
#include <vm/vm.h>
#include <i386/pci/ic/dc21040.h>
#include <i386/isa/isa.h>
#include <i386/isa/icu.h>
#include <i386/isa/dma.h>
#include <i386/isa/isavar.h>
#include <i386/pci/pci.h>
#endif /* __bsdi__ */
#if defined(__NetBSD__)
#include <machine/bus.h>
#if defined(__alpha__)
#include <machine/intr.h>
#endif
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/ic/dc21040reg.h>
#endif /* __NetBSD__ */
/*
* Sigh. Every OS puts these in different places.
*/
#if defined(__NetBSD__)
#include <dev/pci/if_lmc_types.h>
#include <dev/pci/if_lmcioctl.h>
#include <dev/pci/if_lmcvar.h>
#elif defined(__FreeBSD__)
#include "pci/if_lmc_types.h"
#include "pci/if_lmcioctl.h"
#include "pci/if_lmcvar.h"
#else /* BSDI */
#include "i386/pci/if_lmctypes.h"
#include "i386/pci/if_lmcioctl.h"
#include "i386/pci/if_lmcvar.h"
#endif
void
lmc_gpio_mkinput(lmc_softc_t * const sc, u_int32_t bits)
{
sc->lmc_gpio_io &= ~bits;
LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
}
void
lmc_gpio_mkoutput(lmc_softc_t * const sc, u_int32_t bits)
{
sc->lmc_gpio_io |= bits;
LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
}
void
lmc_led_on(lmc_softc_t * const sc, u_int32_t led)
{
sc->lmc_miireg16 &= ~led;
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
void
lmc_led_off(lmc_softc_t * const sc, u_int32_t led)
{
sc->lmc_miireg16 |= led;
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
void
lmc_reset(lmc_softc_t * const sc)
{
sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET;
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET;
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
/*
* make some of the GPIO pins be outputs
*/
lmc_gpio_mkoutput(sc, LMC_GEP_DP | LMC_GEP_RESET);
/*
* drive DP and RESET low to force configuration. This also forces
* the transmitter clock to be internal, but we expect to reset
* that later anyway.
*/
sc->lmc_gpio &= ~(LMC_GEP_DP | LMC_GEP_RESET);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
/*
* hold for more than 10 microseconds
*/
DELAY(50);
/*
* stop driving Xilinx-related signals
*/
lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET);
/*
* busy wait for the chip to reset
*/
while ((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0);
/*
* Call media specific init routine
*/
sc->lmc_media->init(sc);
}
void
lmc_dec_reset(lmc_softc_t * const sc)
{
#ifndef __linux__
lmc_ringinfo_t *ri;
lmc_desc_t *di;
#endif
u_int32_t val;
/*
* disable all interrupts
*/
sc->lmc_intrmask = 0;
LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask);
/*
* we are, obviously, down.
*/
#ifndef __linux__
sc->lmc_flags &= ~(LMC_IFUP | LMC_MODEMOK);
DP(("lmc_dec_reset\n"));
#endif
/*
* Reset the chip with a software reset command.
* Wait 10 microseconds (actually 50 PCI cycles but at
* 33MHz that comes to two microseconds but wait a
* bit longer anyways)
*/
LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
DELAY(10);
sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command);
/*
* We want:
* no ethernet address in frames we write
* disable padding (txdesc, padding disable)
* ignore runt frames (rdes0 bit 15)
* no receiver watchdog or transmitter jabber timer
* (csr15 bit 0,14 == 1)
* if using 16-bit CRC, turn off CRC (trans desc, crc disable)
*/
#ifndef TULIP_CMD_RECEIVEALL
#define TULIP_CMD_RECEIVEALL 0x40000000L
#endif
sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS
| TULIP_CMD_FULLDUPLEX
| TULIP_CMD_PASSBADPKT
| TULIP_CMD_NOHEARTBEAT
| TULIP_CMD_PORTSELECT
| TULIP_CMD_RECEIVEALL
| TULIP_CMD_MUSTBEONE
);
sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE
| TULIP_CMD_THRESHOLDCTL
| TULIP_CMD_STOREFWD
| TULIP_CMD_TXTHRSHLDCTL
);
LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
/*
* disable receiver watchdog and transmit jabber
*/
val = LMC_CSR_READ(sc, csr_sia_general);
val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE);
LMC_CSR_WRITE(sc, csr_sia_general, val);
/*
* turn off those LEDs...
*/
sc->lmc_miireg16 |= LMC_MII16_LED_ALL;
lmc_led_on(sc, LMC_MII16_LED0);
#ifndef __linux__
/*
* reprogram the tx desc, rx desc, and PCI bus options
*/
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NOTX)
LMC_CSR_WRITE(sc, csr_txlist, sc->lmc_txdescmap->dm_segs[0].ds_addr);
#else
LMC_CSR_WRITE(sc, csr_txlist,
LMC_KVATOPHYS(sc, &sc->lmc_txinfo.ri_first[0]));
#endif
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NORX)
LMC_CSR_WRITE(sc, csr_rxlist, sc->lmc_rxdescmap->dm_segs[0].ds_addr);
#else
LMC_CSR_WRITE(sc, csr_rxlist,
LMC_KVATOPHYS(sc, &sc->lmc_rxinfo.ri_first[0]));
#endif
LMC_CSR_WRITE(sc, csr_busmode,
(1 << (LMC_BURSTSIZE(sc->lmc_unit) + 8))
|TULIP_BUSMODE_CACHE_ALIGN8
|TULIP_BUSMODE_READMULTIPLE);
sc->lmc_txq.ifq_maxlen = LMC_TXDESCS;
/*
* Free all the mbufs that were on the transmit ring.
*/
for (;;) {
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NOTX)
bus_dmamap_t map;
#endif
struct mbuf *m;
IF_DEQUEUE(&sc->lmc_txq, m);
if (m == NULL)
break;
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NOTX)
map = M_GETCTX(m, bus_dmamap_t);
bus_dmamap_unload(sc->lmc_dmatag, map);
sc->lmc_txmaps[sc->lmc_txmaps_free++] = map;
#endif
m_freem(m);
}
/*
* reset descriptor state and reclaim all descriptors.
*/
ri = &sc->lmc_txinfo;
ri->ri_nextin = ri->ri_nextout = ri->ri_first;
ri->ri_free = ri->ri_max;
for (di = ri->ri_first; di < ri->ri_last; di++)
di->d_status = 0;
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NOTX)
bus_dmamap_sync(sc->lmc_dmatag, sc->lmc_txdescmap,
0, sc->lmc_txdescmap->dm_mapsize,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
#endif
/*
* We need to collect all the mbufs were on the
* receive ring before we reinit it either to put
* them back on or to know if we have to allocate
* more.
*/
ri = &sc->lmc_rxinfo;
ri->ri_nextin = ri->ri_nextout = ri->ri_first;
ri->ri_free = ri->ri_max;
for (di = ri->ri_first; di < ri->ri_last; di++) {
u_int32_t ctl = di->d_ctl;
di->d_status = 0;
di->d_ctl = LMC_CTL(LMC_CTL_FLGS(ctl),0,0);
di->d_addr1 = 0;
di->d_addr2 = 0;
}
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NORX)
bus_dmamap_sync(sc->lmc_dmatag, sc->lmc_rxdescmap,
0, sc->lmc_rxdescmap->dm_mapsize,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
#endif
for (;;) {
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NORX)
bus_dmamap_t map;
#endif
struct mbuf *m;
IF_DEQUEUE(&sc->lmc_rxq, m);
if (m == NULL)
break;
#if defined(LMC_BUS_DMA) && !defined(LMC_BUS_DMA_NORX)
map = M_GETCTX(m, bus_dmamap_t);
bus_dmamap_unload(sc->lmc_dmatag, map);
sc->lmc_rxmaps[sc->lmc_rxmaps_free++] = map;
#endif
m_freem(m);
}
#endif
}
void
lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base,
size_t csr_size)
{
sc->lmc_csrs.csr_busmode = csr_base + 0 * csr_size;
sc->lmc_csrs.csr_txpoll = csr_base + 1 * csr_size;
sc->lmc_csrs.csr_rxpoll = csr_base + 2 * csr_size;
sc->lmc_csrs.csr_rxlist = csr_base + 3 * csr_size;
sc->lmc_csrs.csr_txlist = csr_base + 4 * csr_size;
sc->lmc_csrs.csr_status = csr_base + 5 * csr_size;
sc->lmc_csrs.csr_command = csr_base + 6 * csr_size;
sc->lmc_csrs.csr_intr = csr_base + 7 * csr_size;
sc->lmc_csrs.csr_missed_frames = csr_base + 8 * csr_size;
sc->lmc_csrs.csr_9 = csr_base + 9 * csr_size;
sc->lmc_csrs.csr_10 = csr_base + 10 * csr_size;
sc->lmc_csrs.csr_11 = csr_base + 11 * csr_size;
sc->lmc_csrs.csr_12 = csr_base + 12 * csr_size;
sc->lmc_csrs.csr_13 = csr_base + 13 * csr_size;
sc->lmc_csrs.csr_14 = csr_base + 14 * csr_size;
sc->lmc_csrs.csr_15 = csr_base + 15 * csr_size;
}
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