/* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */
/*
*
* Copyright (c) 1996 Charles D. Cranor and Washington University.
* 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. 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 Charles D. Cranor and
* Washington University.
* 4. 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.
*
* $FreeBSD$
*/
/*
*
* i f _ e n _ p c i . c
*
* author: Chuck Cranor <chuck@ccrc.wustl.edu>
* started: spring, 1996.
*
* FreeBSD PCI glue for the eni155p card.
* thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs.
*/
#include "en.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <machine/clock.h> /* for DELAY */
#include <net/if.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <dev/en/midwayreg.h>
#include <dev/en/midwayvar.h>
/*
* prototypes
*/
static void en_pci_attach __P((pcici_t, int));
static const char *en_pci_probe __P((pcici_t, pcidi_t));
static void en_pci_shutdown __P((void *, int));
/*
* local structures
*/
struct en_pci_softc {
/* bus independent stuff */
struct en_softc esc; /* includes "device" structure */
/* PCI bus glue */
void *sc_ih; /* interrupt handle */
pci_chipset_tag_t en_pc; /* for PCI calls */
pcici_t en_confid; /* config id */
};
#if !defined(MIDWAY_ENIONLY)
static void eni_get_macaddr __P((struct en_pci_softc *));
#endif
#if !defined(MIDWAY_ADPONLY)
static void adp_get_macaddr __P((struct en_pci_softc *));
#endif
/*
* pointers to softcs (we alloc)
*/
static struct en_pci_softc *enpcis[NEN] = {0};
extern struct cfdriver en_cd;
/*
* autoconfig structures
*/
static u_long en_pci_count;
static struct pci_device endevice = {
"en",
en_pci_probe,
en_pci_attach,
&en_pci_count,
NULL,
};
COMPAT_PCI_DRIVER (en, endevice);
/*
* local defines (PCI specific stuff)
*/
/*
* address of config base memory address register in PCI config space
* (this is card specific)
*/
#define PCI_CBMA 0x10
/*
* tonga (pci bridge). ENI cards only!
*/
#define EN_TONGA 0x60 /* PCI config addr of tonga reg */
#define TONGA_SWAP_DMA 0x80 /* endian swap control */
#define TONGA_SWAP_BYTE 0x40
#define TONGA_SWAP_WORD 0x20
/*
* adaptec pci bridge. ADP cards only!
*/
#define ADP_PCIREG 0x050040 /* PCI control register */
#define ADP_PCIREG_RESET 0x1 /* reset card */
#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */
#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */
#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */
#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */
#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */
#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */
#define PCI_VENDOR_ADP 0x9004 /* adaptec */
#define PCI_PRODUCT_ADP_AIC5900 0x5900
#define PCI_PRODUCT_ADP_AIC5905 0x5905
#define PCI_VENDOR(x) ((x) & 0xFFFF)
#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF)
#if !defined(MIDWAY_ENIONLY)
static void adp_busreset __P((void *));
/*
* bus specific reset function [ADP only!]
*/
static void adp_busreset(v)
void *v;
{
struct en_softc *sc = (struct en_softc *) v;
u_int32_t dummy;
bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET);
DELAY(1000); /* let it reset */
dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
(ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE));
dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) !=
(ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA))
printf("adp_busreset: Adaptec ATM did NOT reset!\n");
}
#endif
/***********************************************************************/
/*
* autoconfig stuff
*/
static const char *en_pci_probe(config_id, device_id)
pcici_t config_id;
pcidi_t device_id;
{
#if !defined(MIDWAY_ADPONLY)
if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS &&
(PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF ||
PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA))
return "Efficient Networks ENI-155p";
#endif
#if !defined(MIDWAY_ENIONLY)
if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP &&
(PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 ||
PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905))
return "Adaptec 155 ATM";
#endif
return 0;
}
static void en_pci_attach(config_id, unit)
pcici_t config_id;
int unit;
{
struct en_softc *sc;
struct en_pci_softc *scp;
pcidi_t device_id;
int retval;
vm_offset_t pa;
if (unit >= NEN) {
printf("en%d: not configured; kernel is built for only %d device%s.\n",
unit, NEN, NEN == 1 ? "" : "s");
return;
}
scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT);
if (scp == NULL)
return;
bzero(scp, sizeof(*scp)); /* zero */
sc = &scp->esc;
retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa);
if (!retval) {
free((caddr_t) scp, M_DEVBUF);
return;
}
enpcis[unit] = scp; /* lock it in */
en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */
en_cd.cd_ndevs = NEN;
snprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname), "en%d", unit);
sc->enif.if_unit = unit;
sc->enif.if_name = "en";
scp->en_confid = config_id;
/*
* figure out if we are an adaptec card or not.
* XXX: why do we have to re-read PC_ID_REG when en_pci_probe already
* had that info?
*/
device_id = pci_conf_read(config_id, PCI_ID_REG);
sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0;
/*
* Add shutdown hook so that DMA is disabled prior to reboot. Not
* doing so could allow DMA to corrupt kernel memory during the
* reboot before the driver initializes.
*/
EVENTHANDLER_REGISTER(shutdown_post_sync, en_pci_shutdown, scp,
SHUTDOWN_PRI_DEFAULT);
if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) {
printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname);
return;
}
sc->ipl = 1; /* XXX */
/*
* set up pci bridge
*/
#if !defined(MIDWAY_ENIONLY)
if (sc->is_adaptec) {
adp_get_macaddr(scp);
sc->en_busreset = adp_busreset;
adp_busreset(sc);
}
#endif
#if !defined(MIDWAY_ADPONLY)
if (!sc->is_adaptec) {
eni_get_macaddr(scp);
sc->en_busreset = NULL;
pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD));
}
#endif
/*
* done PCI specific stuff
*/
en_attach(sc);
}
static void
en_pci_shutdown(
void *sc,
int howto)
{
struct en_pci_softc *psc = (struct en_pci_softc *)sc;
en_reset(&psc->esc);
DELAY(10);
}
#if !defined(MIDWAY_ENIONLY)
#if defined(sparc) || defined(__FreeBSD__)
#define bus_space_read_1(t, h, o) \
((void)t, (*(volatile u_int8_t *)((h) + (o))))
#endif
static void
adp_get_macaddr(scp)
struct en_pci_softc *scp;
{
struct en_softc * sc = (struct en_softc *)scp;
int lcv;
for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++)
sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base,
MID_ADPMACOFF + lcv);
}
#endif /* MIDWAY_ENIONLY */
#if !defined(MIDWAY_ADPONLY)
/*
* Read station (MAC) address from serial EEPROM.
* derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC.
*/
#define EN_PROM_MAGIC 0x0c
#define EN_PROM_DATA 0x02
#define EN_PROM_CLK 0x01
#define EN_ESI 64
static void
eni_get_macaddr(scp)
struct en_pci_softc *scp;
{
struct en_softc * sc = (struct en_softc *)scp;
pcici_t id = scp->en_confid;
int i, j, address, status;
u_int32_t data, t_data;
u_int8_t tmp;
t_data = pci_conf_read(id, EN_TONGA) & 0xffffff00;
data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
pci_conf_write(id, EN_TONGA, data);
for (i = 0; i < sizeof(sc->macaddr); i ++){
/* start operation */
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data &= ~EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
data &= ~EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
/* send address with serial line */
address = ((i + EN_ESI) << 1) + 1;
for ( j = 7 ; j >= 0 ; j --){
data = (address >> j) & 1 ? data | EN_PROM_DATA :
data & ~EN_PROM_DATA;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data &= ~EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
}
/* get ack */
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data = pci_conf_read(id, EN_TONGA);
status = data & EN_PROM_DATA;
data &= ~EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
tmp = 0;
for ( j = 7 ; j >= 0 ; j --){
tmp <<= 1;
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data = pci_conf_read(id, EN_TONGA);
if(data & EN_PROM_DATA) tmp |= 1;
data &= ~EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
}
/* get ack */
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data = pci_conf_read(id, EN_TONGA);
status = data & EN_PROM_DATA;
data &= ~EN_PROM_CLK ;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_DATA ;
pci_conf_write(id, EN_TONGA, data);
sc->macaddr[i] = tmp;
}
/* stop operation */
data &= ~EN_PROM_DATA;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_CLK;
pci_conf_write(id, EN_TONGA, data);
data |= EN_PROM_DATA;
pci_conf_write(id, EN_TONGA, data);
pci_conf_write(id, EN_TONGA, t_data);
}
#endif /* !MIDWAY_ADPONLY */