NetBSD-5.0.2/sys/dev/pci/if_le_pci.c
/* $NetBSD: if_le_pci.c,v 1.49 2008/04/28 20:23:55 martin 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.
*
* 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>
__KERNEL_RCSID(0, "$NetBSD: if_le_pci.c,v 1.49 2008/04/28 20:23:55 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <sys/cpu.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am79900reg.h>
#include <dev/ic/am79900var.h>
#include <dev/pci/if_levar.h>
static int le_pci_match(device_t, cfdata_t, void *);
static void le_pci_attach(device_t, device_t, void *);
static int le_pci_mediachange(struct lance_softc *);
CFATTACH_DECL_NEW(le_pci, sizeof(struct le_softc),
le_pci_match, le_pci_attach, NULL, NULL);
/*
* PCI constants.
* XXX These should be in a common file!
*/
#define PCI_CBIO 0x10 /* Configuration Base IO Address */
#define LE_PCI_MEMSIZE 16384
static int le_pci_supmedia[] = {
IFM_ETHER|IFM_AUTO,
IFM_ETHER|IFM_AUTO|IFM_FDX,
IFM_ETHER|IFM_10_T,
IFM_ETHER|IFM_10_T|IFM_FDX,
IFM_ETHER|IFM_10_5,
IFM_ETHER|IFM_10_5|IFM_FDX,
};
static void
le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
bus_space_write_2(iot, ioh, lesc->sc_rap, port);
bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
}
static uint16_t
le_pci_rdcsr(struct lance_softc *sc, uint16_t port)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
uint16_t val;
bus_space_write_2(iot, ioh, lesc->sc_rap, port);
val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
return (val);
}
static int
le_pci_mediachange(struct lance_softc *sc)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_tag_t iot = lesc->sc_iot;
bus_space_handle_t ioh = lesc->sc_ioh;
int newmedia = sc->sc_media.ifm_media;
uint16_t reg;
if (IFM_SUBTYPE(newmedia) !=
IFM_SUBTYPE(lesc->sc_currentmedia)) {
if (IFM_SUBTYPE(newmedia) == IFM_AUTO) {
/* switch to autoselect - BCR2 bit 1 */
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP);
reg |= 2;
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg);
} else {
/* force media type (in init block) */
lance_reset(sc);
if (IFM_SUBTYPE(newmedia) == IFM_10_T)
sc->sc_initmodemedia = 1; /* UTP */
else
sc->sc_initmodemedia = 0; /* AUI */
lance_init(&sc->sc_ethercom.ec_if);
if (IFM_SUBTYPE(lesc->sc_currentmedia) == IFM_AUTO) {
/* take away autoselect - BCR2 bit 1 */
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP);
reg &= ~2;
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 2);
bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg);
}
}
}
if ((IFM_OPTIONS(newmedia) ^ IFM_OPTIONS(lesc->sc_currentmedia))
& IFM_FDX) {
/* toggle full duplex - BCR9 */
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 9);
reg = bus_space_read_2(iot, ioh, PCNET_PCI_BDP);
if (IFM_OPTIONS(newmedia) & IFM_FDX) {
reg |= 1; /* FDEN */
/* allow FDX on AUI only if explicitly chosen,
not in autoselect mode */
if (IFM_SUBTYPE(newmedia) == IFM_10_5)
reg |= 2; /* AUIFD */
else
reg &= ~2;
} else
reg &= ~1;
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 9);
bus_space_write_2(iot, ioh, PCNET_PCI_BDP, reg);
}
lesc->sc_currentmedia = newmedia;
return (0);
}
static int
le_pci_match(device_t parent, cfdata_t cf, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_AMD)
return (0);
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_AMD_PCNET_PCI:
return (1);
}
return (0);
}
static void
le_pci_attach(device_t parent, device_t self, void *aux)
{
struct le_softc *lesc = device_private(self);
struct lance_softc *sc = &lesc->sc_am79900.lsc;
struct pci_attach_args *pa = aux;
pci_intr_handle_t ih;
bus_space_tag_t iot;
bus_space_handle_t ioh;
bus_dma_tag_t dmat = pa->pa_dmat;
bus_dma_segment_t seg;
pci_chipset_tag_t pc = pa->pa_pc;
pcireg_t csr;
int i, rseg;
const char *model, *intrstr;
sc->sc_dev = self;
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_AMD_PCNET_PCI:
model = "PCnet-PCI Ethernet";
lesc->sc_rap = PCNET_PCI_RAP;
lesc->sc_rdp = PCNET_PCI_RDP;
break;
default:
model = "unknown model!";
}
aprint_normal(": %s\n", model);
if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
&iot, &ioh, NULL, NULL)) {
aprint_error_dev(self, "can't map I/O space\n");
return;
}
/*
* Extract the physical MAC address from the ROM.
*/
for (i = 0; i < sizeof(sc->sc_enaddr); i++)
sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i);
lesc->sc_iot = iot;
lesc->sc_ioh = ioh;
lesc->sc_dmat = dmat;
/*
* Allocate a DMA area for the card.
*/
if (bus_dmamem_alloc(dmat, LE_PCI_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
&rseg, BUS_DMA_NOWAIT)) {
aprint_error_dev(self, "couldn't allocate memory for card\n");
return;
}
if (bus_dmamem_map(dmat, &seg, rseg, LE_PCI_MEMSIZE,
(void **)&sc->sc_mem,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
aprint_error_dev(self, "couldn't map memory for card\n");
return;
}
/*
* Create and load the DMA map for the DMA area.
*/
if (bus_dmamap_create(dmat, LE_PCI_MEMSIZE, 1,
LE_PCI_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
aprint_error_dev(self, "couldn't create DMA map\n");
bus_dmamem_free(dmat, &seg, rseg);
return;
}
if (bus_dmamap_load(dmat, lesc->sc_dmam,
sc->sc_mem, LE_PCI_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
aprint_error_dev(self, "coundn't load DMA map\n");
bus_dmamem_free(dmat, &seg, rseg);
return;
}
sc->sc_conf3 = 0;
sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
sc->sc_memsize = LE_PCI_MEMSIZE;
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_hwinit = NULL;
sc->sc_supmedia = le_pci_supmedia;
sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int);
sc->sc_defaultmedia = le_pci_supmedia[0];
sc->sc_mediachange = le_pci_mediachange;
lesc->sc_currentmedia = le_pci_supmedia[0];
aprint_normal("%s", device_xname(self));
am79900_config(&lesc->sc_am79900);
/* Chip is stopped. Set "software style" to 32-bit. */
bus_space_write_2(iot, ioh, PCNET_PCI_RAP, 20);
bus_space_write_2(iot, ioh, PCNET_PCI_BDP, 2);
/* Enable the card. */
csr = pci_conf_read(pc, pa->pa_tag,
PCI_COMMAND_STATUS_REG);
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
csr | PCI_COMMAND_MASTER_ENABLE);
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(self, "couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
lesc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, am79900_intr, sc);
if (lesc->sc_ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}
aprint_normal_dev(self, "interrupting at %s\n", intrstr);
}