freebsd-dev/sys/dev/en/if_en_pci.c
2000-11-07 09:31:28 +00:00

486 lines
12 KiB
C

/* $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 <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <net/if.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <dev/en/midwayreg.h>
#include <dev/en/midwayvar.h>
/*
* prototypes
*/
static int en_pci_probe __P((device_t));
static int en_pci_attach __P((device_t));
static int en_pci_detach __P((device_t));
static int en_pci_shutdown __P((device_t));
/*
* local structures
*/
struct en_pci_softc {
/* bus independent stuff */
struct en_softc esc; /* includes "device" structure */
/* freebsd newbus glue */
struct resource *res; /* resource descriptor for registers */
struct resource *irq; /* resource descriptor for interrupt */
void *ih; /* interrupt handle */
};
#if !defined(MIDWAY_ENIONLY)
static void eni_get_macaddr __P((device_t, struct en_pci_softc *));
#endif
#if !defined(MIDWAY_ADPONLY)
static void adp_get_macaddr __P((struct en_pci_softc *));
#endif
/*
* 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 int
en_pci_probe(device_t dev)
{
switch (pci_get_vendor(dev)) {
#if !defined(MIDWAY_ADPONLY)
case PCI_VENDOR_EFFICIENTNETS:
switch (pci_get_device(dev)) {
case PCI_PRODUCT_EFFICIENTNETS_ENI155PF:
case PCI_PRODUCT_EFFICIENTNETS_ENI155PA:
device_set_desc(dev, "Efficient Networks ENI-155p");
return 0;
}
break;
#endif
#if !defined(MIDWAY_ENIONLY)
case PCI_VENDOR_ADP:
switch (pci_get_device(dev)) {
case PCI_PRODUCT_ADP_AIC5900:
case PCI_PRODUCT_ADP_AIC5905:
device_set_desc(dev, "Adaptec 155 ATM");
return 0;
}
break;
#endif
}
return ENXIO;
}
static int
en_pci_attach(device_t dev)
{
struct en_softc *sc;
struct en_pci_softc *scp;
u_long val;
int rid, s, unit, error = 0;
sc = device_get_softc(dev);
scp = (struct en_pci_softc *)sc;
bzero(scp, sizeof(*scp)); /* zero */
s = splimp();
/*
* Enable bus mastering.
*/
val = pci_read_config(dev, PCIR_COMMAND, 2);
val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
pci_write_config(dev, PCIR_COMMAND, val, 2);
/*
* Map control/status registers.
*/
rid = PCI_CBMA;
scp->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
0, ~0, 1, RF_ACTIVE);
if (!scp->res) {
device_printf(dev, "could not map memory\n");
error = ENXIO;
goto fail;
}
sc->en_memt = rman_get_bustag(scp->res);
sc->en_base = rman_get_bushandle(scp->res);
/*
* Allocate our interrupt.
*/
rid = 0;
scp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (scp->irq == NULL) {
device_printf(dev, "could not map interrupt\n");
bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
error = ENXIO;
goto fail;
}
error = bus_setup_intr(dev, scp->irq, INTR_TYPE_NET,
en_intr, sc, &scp->ih);
if (error) {
device_printf(dev, "could not setup irq\n");
bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
goto fail;
}
sc->ipl = 1; /* XXX (required to enable interrupt on midway) */
unit = device_get_unit(dev);
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";
/* figure out if we are an adaptec card or not */
sc->is_adaptec = (pci_get_vendor(dev) == PCI_VENDOR_ADP) ? 1 : 0;
/*
* 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(dev, scp);
sc->en_busreset = NULL;
pci_write_config(dev, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD), 4);
}
#endif
/*
* done PCI specific stuff
*/
en_attach(sc);
splx(s);
return 0;
fail:
splx(s);
return error;
}
static int
en_pci_detach(device_t dev)
{
struct en_softc *sc = device_get_softc(dev);
struct en_pci_softc *scp = (struct en_pci_softc *)sc;
int s;
s = splimp();
/*
* Close down routes etc.
*/
if_detach(&sc->enif);
/*
* Stop DMA and drop transmit queue.
*/
en_reset(sc);
/*
* Deallocate resources.
*/
bus_teardown_intr(dev, scp->irq, scp->ih);
bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
#ifdef notyet
/*
* Free all the driver internal resources
*/
#endif
splx(s);
return 0;
}
static int
en_pci_shutdown(device_t dev)
{
struct en_pci_softc *psc = (struct en_pci_softc *)device_get_softc(dev);
en_reset(&psc->esc);
DELAY(10); /* is this necessary? */
return (0);
}
#if !defined(MIDWAY_ENIONLY)
#if defined(sparc)
#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(device_t dev, struct en_pci_softc *scp)
{
struct en_softc * sc = (struct en_softc *)scp;
int i, j, address, status;
u_int32_t data, t_data;
u_int8_t tmp;
t_data = pci_read_config(dev, EN_TONGA, 4) & 0xffffff00;
data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
pci_write_config(dev, EN_TONGA, data, 4);
for (i = 0; i < sizeof(sc->macaddr); i ++){
/* start operation */
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data &= ~EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
data &= ~EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
/* 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_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data &= ~EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
}
/* get ack */
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data = pci_read_config(dev, EN_TONGA, 4);
status = data & EN_PROM_DATA;
data &= ~EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
tmp = 0;
for ( j = 7 ; j >= 0 ; j --){
tmp <<= 1;
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data = pci_read_config(dev, EN_TONGA, 4);
if(data & EN_PROM_DATA) tmp |= 1;
data &= ~EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
}
/* get ack */
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data = pci_read_config(dev, EN_TONGA, 4);
status = data & EN_PROM_DATA;
data &= ~EN_PROM_CLK ;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_DATA ;
pci_write_config(dev, EN_TONGA, data, 4);
sc->macaddr[i] = tmp;
}
/* stop operation */
data &= ~EN_PROM_DATA;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_CLK;
pci_write_config(dev, EN_TONGA, data, 4);
data |= EN_PROM_DATA;
pci_write_config(dev, EN_TONGA, data, 4);
pci_write_config(dev, EN_TONGA, t_data, 4);
}
#endif /* !MIDWAY_ADPONLY */
static device_method_t en_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, en_pci_probe),
DEVMETHOD(device_attach, en_pci_attach),
DEVMETHOD(device_detach, en_pci_detach),
DEVMETHOD(device_shutdown, en_pci_shutdown),
{ 0, 0 }
};
static driver_t en_driver = {
"en",
en_methods,
sizeof(struct en_pci_softc),
};
static devclass_t en_devclass;
DRIVER_MODULE(if_en, pci, en_driver, en_devclass, 0, 0);