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| Current File : //compat/linux/proc/68247/root/sys/dev/le/if_le_pci.c |
/* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and 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) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)if_le.c 8.2 (Berkeley) 11/16/93
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/le/if_le_pci.c 216518 2010-12-18 14:21:28Z tijl $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/le/lancereg.h>
#include <dev/le/lancevar.h>
#include <dev/le/am79900var.h>
#define AMD_VENDOR 0x1022
#define AMD_PCNET_PCI 0x2000
#define AMD_PCNET_HOME 0x2001
#define PCNET_MEMSIZE (32*1024)
#define PCNET_PCI_RDP 0x10
#define PCNET_PCI_RAP 0x12
#define PCNET_PCI_BDP 0x16
struct le_pci_softc {
struct am79900_softc sc_am79900; /* glue to MI code */
struct resource *sc_rres;
struct resource *sc_ires;
void *sc_ih;
bus_dma_tag_t sc_pdmat;
bus_dma_tag_t sc_dmat;
bus_dmamap_t sc_dmam;
};
static device_probe_t le_pci_probe;
static device_attach_t le_pci_attach;
static device_detach_t le_pci_detach;
static device_resume_t le_pci_resume;
static device_suspend_t le_pci_suspend;
static device_method_t le_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, le_pci_probe),
DEVMETHOD(device_attach, le_pci_attach),
DEVMETHOD(device_detach, le_pci_detach),
/* We can just use the suspend method here. */
DEVMETHOD(device_shutdown, le_pci_suspend),
DEVMETHOD(device_suspend, le_pci_suspend),
DEVMETHOD(device_resume, le_pci_resume),
{ 0, 0 }
};
DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc));
DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0);
MODULE_DEPEND(le, ether, 1, 1, 1);
static const int le_home_supmedia[] = {
IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0)
};
static const int le_pci_supmedia[] = {
IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0),
IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0),
IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0),
IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0),
IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0),
IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0)
};
static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t);
static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t);
static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t);
static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t);
static int le_pci_mediachange(struct lance_softc *);
static void le_pci_hwreset(struct lance_softc *);
static bus_dmamap_callback_t le_pci_dma_callback;
static void
le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val);
}
static uint16_t
le_pci_rdbcr(struct lance_softc *sc, uint16_t port)
{
struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP));
}
static void
le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val);
}
static uint16_t
le_pci_rdcsr(struct lance_softc *sc, uint16_t port)
{
struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP));
}
static int
le_pci_mediachange(struct lance_softc *sc)
{
struct ifmedia *ifm = &sc->sc_media;
uint16_t reg;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
le_pci_wrbcr(sc, LE_BCR49,
(le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1);
else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO)
le_pci_wrbcr(sc, LE_BCR2,
le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL);
else {
le_pci_wrbcr(sc, LE_BCR2,
le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL);
reg = le_pci_rdcsr(sc, LE_CSR15);
reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK);
if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T)
reg |= LE_C15_PORTSEL(LE_PORTSEL_10T);
else
reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI);
le_pci_wrcsr(sc, LE_CSR15, reg);
}
reg = le_pci_rdbcr(sc, LE_BCR9);
if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) {
reg |= LE_B9_FDEN;
/*
* Allow FDX on AUI only if explicitly chosen,
* not in autoselect mode.
*/
if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5)
reg |= LE_B9_AUIFD;
else
reg &= ~LE_B9_AUIFD;
} else
reg &= ~LE_B9_FDEN;
le_pci_wrbcr(sc, LE_BCR9, reg);
return (0);
}
static void
le_pci_hwreset(struct lance_softc *sc)
{
/*
* Chip is stopped. Set software style to PCnet-PCI (32-bit).
* Actually, am79900.c implements ILACC support (hence its
* name) but unfortunately VMware does not. As far as this
* driver is concerned that should not make a difference
* though, as the settings used have the same meaning for
* both, ILACC and PCnet-PCI (note that there would be a
* difference for the ADD_FCS/NO_FCS bit if used).
*/
le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2);
}
static void
le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
{
struct lance_softc *sc = (struct lance_softc *)xsc;
if (error != 0)
return;
KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__));
sc->sc_addr = segs[0].ds_addr;
}
static int
le_pci_probe(device_t dev)
{
if (pci_get_vendor(dev) != AMD_VENDOR)
return (ENXIO);
switch (pci_get_device(dev)) {
case AMD_PCNET_PCI:
device_set_desc(dev, "AMD PCnet-PCI");
/* Let pcn(4) win. */
return (BUS_PROBE_LOW_PRIORITY);
case AMD_PCNET_HOME:
device_set_desc(dev, "AMD PCnet-Home");
/* Let pcn(4) win. */
return (BUS_PROBE_LOW_PRIORITY);
default:
return (ENXIO);
}
}
static int
le_pci_attach(device_t dev)
{
struct le_pci_softc *lesc;
struct lance_softc *sc;
int error, i;
lesc = device_get_softc(dev);
sc = &lesc->sc_am79900.lsc;
LE_LOCK_INIT(sc, device_get_nameunit(dev));
pci_enable_busmaster(dev);
i = PCIR_BAR(0);
lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&i, RF_ACTIVE);
if (lesc->sc_rres == NULL) {
device_printf(dev, "cannot allocate registers\n");
error = ENXIO;
goto fail_mtx;
}
i = 0;
if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&i, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
device_printf(dev, "cannot allocate interrupt\n");
error = ENXIO;
goto fail_rres;
}
error = bus_dma_tag_create(
bus_get_dma_tag(dev), /* parent */
1, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
0, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&lesc->sc_pdmat);
if (error != 0) {
device_printf(dev, "cannot allocate parent DMA tag\n");
goto fail_ires;
}
sc->sc_memsize = PCNET_MEMSIZE;
/*
* For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte
* aligned and the ring descriptors must be 16-byte aligned when using
* a 32-bit software style.
*/
error = bus_dma_tag_create(
lesc->sc_pdmat, /* parent */
16, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
sc->sc_memsize, /* maxsize */
1, /* nsegments */
sc->sc_memsize, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&lesc->sc_dmat);
if (error != 0) {
device_printf(dev, "cannot allocate buffer DMA tag\n");
goto fail_pdtag;
}
error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem,
BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam);
if (error != 0) {
device_printf(dev, "cannot allocate DMA buffer memory\n");
goto fail_dtag;
}
sc->sc_addr = 0;
error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem,
sc->sc_memsize, le_pci_dma_callback, sc, 0);
if (error != 0 || sc->sc_addr == 0) {
device_printf(dev, "cannot load DMA buffer map\n");
goto fail_dmem;
}
sc->sc_flags = LE_BSWAP;
sc->sc_conf3 = 0;
sc->sc_mediastatus = NULL;
switch (pci_get_device(dev)) {
case AMD_PCNET_HOME:
sc->sc_mediachange = le_pci_mediachange;
sc->sc_supmedia = le_home_supmedia;
sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int);
sc->sc_defaultmedia = le_home_supmedia[0];
break;
default:
sc->sc_mediachange = le_pci_mediachange;
sc->sc_supmedia = le_pci_supmedia;
sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int);
sc->sc_defaultmedia = le_pci_supmedia[0];
}
/*
* Extract the physical MAC address from the ROM.
*/
bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr,
sizeof(sc->sc_enaddr));
sc->sc_copytodesc = lance_copytobuf_contig;
sc->sc_copyfromdesc = lance_copyfrombuf_contig;
sc->sc_copytobuf = lance_copytobuf_contig;
sc->sc_copyfrombuf = lance_copyfrombuf_contig;
sc->sc_zerobuf = lance_zerobuf_contig;
sc->sc_rdcsr = le_pci_rdcsr;
sc->sc_wrcsr = le_pci_wrcsr;
sc->sc_hwreset = le_pci_hwreset;
sc->sc_hwinit = NULL;
sc->sc_hwintr = NULL;
sc->sc_nocarrier = NULL;
error = am79900_config(&lesc->sc_am79900, device_get_name(dev),
device_get_unit(dev));
if (error != 0) {
device_printf(dev, "cannot attach Am79900\n");
goto fail_dmap;
}
error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE,
NULL, am79900_intr, sc, &lesc->sc_ih);
if (error != 0) {
device_printf(dev, "cannot set up interrupt\n");
goto fail_am79900;
}
return (0);
fail_am79900:
am79900_detach(&lesc->sc_am79900);
fail_dmap:
bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
fail_dmem:
bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
fail_dtag:
bus_dma_tag_destroy(lesc->sc_dmat);
fail_pdtag:
bus_dma_tag_destroy(lesc->sc_pdmat);
fail_ires:
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(lesc->sc_ires), lesc->sc_ires);
fail_rres:
bus_release_resource(dev, SYS_RES_IOPORT,
rman_get_rid(lesc->sc_rres), lesc->sc_rres);
fail_mtx:
LE_LOCK_DESTROY(sc);
return (error);
}
static int
le_pci_detach(device_t dev)
{
struct le_pci_softc *lesc;
struct lance_softc *sc;
lesc = device_get_softc(dev);
sc = &lesc->sc_am79900.lsc;
bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih);
am79900_detach(&lesc->sc_am79900);
bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
bus_dma_tag_destroy(lesc->sc_dmat);
bus_dma_tag_destroy(lesc->sc_pdmat);
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(lesc->sc_ires), lesc->sc_ires);
bus_release_resource(dev, SYS_RES_IOPORT,
rman_get_rid(lesc->sc_rres), lesc->sc_rres);
LE_LOCK_DESTROY(sc);
return (0);
}
static int
le_pci_suspend(device_t dev)
{
struct le_pci_softc *lesc;
lesc = device_get_softc(dev);
lance_suspend(&lesc->sc_am79900.lsc);
return (0);
}
static int
le_pci_resume(device_t dev)
{
struct le_pci_softc *lesc;
lesc = device_get_softc(dev);
lance_resume(&lesc->sc_am79900.lsc);
return (0);
}