NetBSD-5.0.2/sys/dev/pci/if_en_pci.c
/* $NetBSD: if_en_pci.c,v 1.27 2008/04/10 19:13:36 cegger 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.
*/
/*
*
* i f _ e n _ p c i . c
*
* author: Chuck Cranor <chuck@ccrc.wustl.edu>
* started: spring, 1996.
*
* PCI glue for the eni155p card.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_en_pci.c,v 1.27 2008/04/10 19:13:36 cegger Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <net/if.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/midwayreg.h>
#include <dev/ic/midwayvar.h>
/*
* 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 */
};
/*
* local defines (PCI specific stuff)
*/
#if !defined(MIDWAY_ENIONLY)
static void eni_get_macaddr(struct en_pci_softc *, struct pci_attach_args *);
#endif
#if !defined(MIDWAY_ADPONLY)
static void adp_get_macaddr(struct en_pci_softc *, struct pci_attach_args *);
#endif
/*
* 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 bytes on DMA */
/*
* prototypes
*/
static int en_pci_match(struct device *, struct cfdata *, void *);
static void en_pci_attach(struct device *, struct device *, void *);
/*
* PCI autoconfig attachments
*/
CFATTACH_DECL(en_pci, sizeof(struct en_pci_softc),
en_pci_match, en_pci_attach, NULL, NULL);
#if !defined(MIDWAY_ENIONLY)
static void adp_busreset(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_match(struct device *parent, struct cfdata *match,
void *aux)
{
struct pci_attach_args *pa = (struct pci_attach_args *) aux;
#if !defined(MIDWAY_ADPONLY)
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_EFFICIENTNETS &&
(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF ||
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA))
return 1;
#endif
#if !defined(MIDWAY_ENIONLY)
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP &&
(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5900 ||
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5905))
return 1;
#endif
return 0;
}
static void
en_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct en_softc *sc = (void *)self;
struct en_pci_softc *scp = (void *)self;
struct pci_attach_args *pa = aux;
pci_intr_handle_t ih;
const char *intrstr;
int retval;
aprint_naive(": ATM controller\n");
aprint_normal("\n");
sc->is_adaptec = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP) ? 1 : 0;
scp->en_pc = pa->pa_pc;
/*
* make sure bus mastering is enabled
*/
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
PCI_COMMAND_MASTER_ENABLE);
/*
* interrupt map
*/
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(&sc->sc_dev, "couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(scp->en_pc, ih);
scp->sc_ih = pci_intr_establish(scp->en_pc, ih, IPL_NET, en_intr, sc);
if (scp->sc_ih == NULL) {
aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt\n");
if (intrstr != NULL)
aprint_normal(" at %s", intrstr);
aprint_normal("\n");
return;
}
aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr);
sc->ipl = 1; /* XXX */
/*
* memory map
*/
retval = pci_mapreg_map(pa, PCI_CBMA,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
&sc->en_memt, &sc->en_base, NULL, &sc->en_obmemsz);
if (retval) {
aprint_error_dev(&sc->sc_dev, "couldn't map memory\n");
return;
}
/*
* set up pci bridge
*/
#if !defined(MIDWAY_ENIONLY)
if (sc->is_adaptec) {
adp_get_macaddr(scp, pa);
sc->en_busreset = adp_busreset;
adp_busreset(sc);
}
#endif
#if !defined(MIDWAY_ADPONLY)
if (!sc->is_adaptec) {
eni_get_macaddr(scp, pa);
sc->en_busreset = NULL;
pci_conf_write(scp->en_pc, pa->pa_tag, EN_TONGA,
(TONGA_SWAP_DMA|TONGA_SWAP_WORD));
}
#endif
/*
* done PCI specific stuff
*/
en_attach(sc);
}
#if 0
static void
en_pci_shutdown(
int howto,
void *sc)
{
struct en_pci_softc *psc = (struct en_pci_softc *)sc;
en_reset(&psc->esc);
DELAY(10);
}
#endif
#if !defined(MIDWAY_ENIONLY)
#if defined(__FreeBSD__)
#define bus_space_read_1(t, h, o) \
((void)t, (*(volatile u_int8_t *)((h) + (o))))
#endif
static void
adp_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa)
{
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, pa)
struct en_pci_softc *scp;
struct pci_attach_args *pa;
{
struct en_softc *sc = (struct en_softc *)scp;
pci_chipset_tag_t id = scp->en_pc;
pcitag_t tag = pa->pa_tag;
int i, j, address;
u_int32_t data, t_data;
u_int8_t tmp;
t_data = pci_conf_read(id, tag, EN_TONGA) & 0xffffff00;
data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
pci_conf_write(id, tag, EN_TONGA, data);
for (i = 0; i < sizeof(sc->macaddr); i ++){
/* start operation */
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data &= ~EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
data &= ~EN_PROM_CLK ;
pci_conf_write(id, tag, 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, tag, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data &= ~EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
}
/* get ack */
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data = pci_conf_read(id, tag, EN_TONGA);
data &= ~EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
tmp = 0;
for ( j = 7 ; j >= 0 ; j --){
tmp <<= 1;
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data = pci_conf_read(id, tag, EN_TONGA);
if(data & EN_PROM_DATA) tmp |= 1;
data &= ~EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
}
/* get ack */
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data = pci_conf_read(id, tag, EN_TONGA);
data &= ~EN_PROM_CLK ;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_DATA ;
pci_conf_write(id, tag, EN_TONGA, data);
sc->macaddr[i] = tmp;
}
/* stop operation */
data &= ~EN_PROM_DATA;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_CLK;
pci_conf_write(id, tag, EN_TONGA, data);
data |= EN_PROM_DATA;
pci_conf_write(id, tag, EN_TONGA, data);
pci_conf_write(id, tag, EN_TONGA, t_data);
}
#endif /* !MIDWAY_ADPONLY */