414 lines
10 KiB
C
414 lines
10 KiB
C
/* $NetBSD: if_ate.c,v 1.51 2019/02/03 03:19:27 mrg Exp $ */
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/*
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* All Rights Reserved, Copyright (C) Fujitsu Limited 1995
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*
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* This software may be used, modified, copied, distributed, and sold, in
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* both source and binary form provided that the above copyright, these
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* terms and the following disclaimer are retained. The name of the author
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* and/or the contributor may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION.
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Portions copyright (C) 1993, David Greenman. This software may be used,
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* modified, copied, distributed, and sold, in both source and binary form
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* provided that the above copyright and these terms are retained. Under no
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* circumstances is the author responsible for the proper functioning of this
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* software, nor does the author assume any responsibility for damages
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* incurred with its use.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_ate.c,v 1.51 2019/02/03 03:19:27 mrg Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <dev/ic/mb86960reg.h>
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#include <dev/ic/mb86960var.h>
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#include <dev/isa/isavar.h>
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int ate_match(device_t, cfdata_t, void *);
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void ate_attach(device_t, device_t, void *);
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struct ate_softc {
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struct mb86960_softc sc_mb86960; /* real "mb86960" softc */
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/* ISA-specific goo. */
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void *sc_ih; /* interrupt cookie */
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};
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CFATTACH_DECL_NEW(ate_isa, sizeof(struct ate_softc),
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ate_match, ate_attach, NULL, NULL);
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struct fe_simple_probe_struct {
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uint8_t port; /* Offset from the base I/O address. */
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uint8_t mask; /* Bits to be checked. */
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uint8_t bits; /* Values to be compared against. */
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};
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static inline int fe_simple_probe(bus_space_tag_t, bus_space_handle_t,
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struct fe_simple_probe_struct const *);
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static int ate_find(bus_space_tag_t, bus_space_handle_t, int *, int *);
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static int ate_detect(bus_space_tag_t, bus_space_handle_t,
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uint8_t enaddr[ETHER_ADDR_LEN]);
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static int const ate_iomap[8] = {
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0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300
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};
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#define NATE_IOMAP (sizeof (ate_iomap) / sizeof (ate_iomap[0]))
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#define ATE_NPORTS 0x20
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#ifdef ATE_DEBUG
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#define DPRINTF printf
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#else
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#define DPRINTF while (/*CONSTCOND*/0) printf
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#endif
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/*
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* Hardware probe routines.
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*/
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/*
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* Determine if the device is present.
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*/
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int
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ate_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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int i, iobase, irq, rv = 0;
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uint8_t myea[ETHER_ADDR_LEN];
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if (ia->ia_nio < 1)
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return 0;
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if (ia->ia_nirq < 1)
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return 0;
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if (ISA_DIRECT_CONFIG(ia))
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return 0;
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/* Disallow wildcarded values. */
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return 0;
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/*
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* See if the sepcified address is valid for MB86965A JLI mode.
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*/
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for (i = 0; i < NATE_IOMAP; i++)
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if (ate_iomap[i] == ia->ia_io[0].ir_addr)
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break;
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if (i == NATE_IOMAP) {
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DPRINTF("%s: unknown iobase 0x%x\n",
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__func__, ia->ia_io[0].ir_addr);
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return 0;
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}
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/* Map i/o space. */
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if (bus_space_map(iot, ia->ia_io[0].ir_addr, ATE_NPORTS, 0, &ioh)) {
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DPRINTF("ate_match: couldn't map iospace 0x%x\n",
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ia->ia_io[0].ir_addr);
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return 0;
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}
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if (ate_find(iot, ioh, &iobase, &irq) == 0) {
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DPRINTF("%s: ate_find failed\n", __func__);
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goto out;
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}
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if (iobase != ia->ia_io[0].ir_addr) {
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DPRINTF("%s: unexpected iobase in board: 0x%x\n",
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__func__, iobase);
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goto out;
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}
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if (ate_detect(iot, ioh, myea) == 0) { /* XXX necessary? */
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DPRINTF("%s: ate_detect failed\n", __func__);
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goto out;
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}
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if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) {
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if (ia->ia_irq[0].ir_irq != irq) {
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aprint_error("%s: irq mismatch; "
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"kernel configured %d != board configured %d\n",
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__func__, ia->ia_irq[0].ir_irq, irq);
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goto out;
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}
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} else
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ia->ia_irq[0].ir_irq = irq;
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = ATE_NPORTS;
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ia->ia_nirq = 1;
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ia->ia_niomem = 0;
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ia->ia_ndrq = 0;
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rv = 1;
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out:
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bus_space_unmap(iot, ioh, ATE_NPORTS);
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return rv;
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}
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/*
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* Check for specific bits in specific registers have specific values.
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*/
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static inline int
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fe_simple_probe(bus_space_tag_t iot, bus_space_handle_t ioh,
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struct fe_simple_probe_struct const *sp)
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{
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uint8_t val;
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struct fe_simple_probe_struct const *p;
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for (p = sp; p->mask != 0; p++) {
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val = bus_space_read_1(iot, ioh, p->port);
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if ((val & p->mask) != p->bits) {
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DPRINTF("%s: %x & %x != %x\n",
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__func__, val, p->mask, p->bits);
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return 0;
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}
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}
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return 1;
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}
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/*
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* Hardware (vendor) specific probe routines.
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*/
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/*
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* Probe and initialization for Allied-Telesis AT1700/RE2000 series.
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*/
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static int
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ate_find(bus_space_tag_t iot, bus_space_handle_t ioh, int *iobase, int *irq)
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{
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uint8_t eeprom[FE_EEPROM_SIZE];
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int n;
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static const int irqmap[4][4] = {
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{ 3, 4, 5, 9 },
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{ 10, 11, 12, 15 },
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{ 3, 11, 5, 15 },
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{ 10, 11, 14, 15 },
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};
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static const struct fe_simple_probe_struct probe_table[] = {
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{ FE_DLCR2, 0x70, 0x00 },
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{ FE_DLCR4, 0x08, 0x00 },
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{ FE_DLCR5, 0x80, 0x00 },
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#if 0
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{ FE_BMPR16, 0x1B, 0x00 },
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{ FE_BMPR17, 0x7F, 0x00 },
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#endif
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{ 0, 0x00, 0x00 },
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};
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#if ATE_DEBUG >= 4
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log(LOG_INFO, "%s: probe (0x%x) for ATE\n", __func__, iobase);
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#if 0
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fe_dump(LOG_INFO, sc);
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#endif
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#endif
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/*
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* We should test if MB86965A is on the base address now.
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* Unfortunately, it is very hard to probe it reliably, since
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* we have no way to reset the chip under software control.
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* On cold boot, we could check the "signature" bit patterns
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* described in the Fujitsu document. On warm boot, however,
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* we can predict almost nothing about register values.
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*/
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if (fe_simple_probe(iot, ioh, probe_table) == 0)
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return 0;
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/* Check if our I/O address matches config info on 86965. */
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n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_ADDR)
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>> FE_B19_ADDR_SHIFT;
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*iobase = ate_iomap[n];
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/*
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* We are now almost sure we have an AT1700 at the given
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* address. So, read EEPROM through 86965. We have to write
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* into LSI registers to read from EEPROM. I want to avoid it
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* at this stage, but I cannot test the presence of the chip
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* any further without reading EEPROM. FIXME.
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*/
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mb86965_read_eeprom(iot, ioh, eeprom);
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/* Make sure that config info in EEPROM and 86965 agree. */
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if (eeprom[FE_EEPROM_CONF] != bus_space_read_1(iot, ioh, FE_BMPR19)) {
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#ifdef DIAGNOSTIC
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printf("%s: incorrect configuration in eeprom and chip\n",
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__func__);
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#endif
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return 0;
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}
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/*
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* Try to determine IRQ settings.
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* Different models use different ranges of IRQs.
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*/
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n = (bus_space_read_1(iot, ioh, FE_BMPR19) & FE_B19_IRQ)
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>> FE_B19_IRQ_SHIFT;
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switch (eeprom[FE_ATI_EEP_REVISION] & 0xf0) {
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case 0x30:
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*irq = irqmap[3][n];
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break;
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case 0x10:
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case 0x50:
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*irq = irqmap[2][n];
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break;
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case 0x40:
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case 0x60:
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if (eeprom[FE_ATI_EEP_MAGIC] & 0x04) {
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*irq = irqmap[1][n];
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break;
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}
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/* FALLTHROUGH */
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default:
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*irq = irqmap[0][n];
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break;
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}
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return 1;
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}
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/*
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* Determine type and ethernet address.
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*/
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static int
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ate_detect(bus_space_tag_t iot, bus_space_handle_t ioh,
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uint8_t enaddr[ETHER_ADDR_LEN])
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{
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uint8_t eeprom[FE_EEPROM_SIZE];
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int type;
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/* Get our station address from EEPROM. */
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mb86965_read_eeprom(iot, ioh, eeprom);
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memcpy(enaddr, eeprom + FE_ATI_EEP_ADDR, ETHER_ADDR_LEN);
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/* Make sure we got a valid station address. */
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if ((enaddr[0] & 0x03) != 0x00 ||
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(enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) {
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DPRINTF("%s: invalid ethernet address\n", __func__);
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return 0;
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}
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/*
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* Determine the card type.
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*/
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switch (eeprom[FE_ATI_EEP_MODEL]) {
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case FE_ATI_MODEL_AT1700T:
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type = FE_TYPE_AT1700T;
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break;
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case FE_ATI_MODEL_AT1700BT:
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type = FE_TYPE_AT1700BT;
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break;
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case FE_ATI_MODEL_AT1700FT:
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type = FE_TYPE_AT1700FT;
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break;
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case FE_ATI_MODEL_AT1700AT:
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type = FE_TYPE_AT1700AT;
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break;
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default:
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type = FE_TYPE_AT_UNKNOWN;
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break;
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}
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return type;
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}
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void
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ate_attach(device_t parent, device_t self, void *aux)
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{
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struct ate_softc *isc = device_private(self);
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struct mb86960_softc *sc = &isc->sc_mb86960;
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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uint8_t myea[ETHER_ADDR_LEN];
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const char *typestr;
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int type;
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sc->sc_dev = self;
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/* Map i/o space. */
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if (bus_space_map(iot, ia->ia_io[0].ir_addr, ATE_NPORTS, 0, &ioh)) {
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aprint_error(": can't map i/o space\n");
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return;
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}
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sc->sc_bst = iot;
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sc->sc_bsh = ioh;
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/* Determine the card type and get ethernet address. */
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type = ate_detect(iot, ioh, myea);
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switch (type) {
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case FE_TYPE_AT1700T:
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typestr = "AT-1700T/RE2001";
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break;
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case FE_TYPE_AT1700BT:
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typestr = "AT-1700BT/RE2003";
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break;
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case FE_TYPE_AT1700FT:
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typestr = "AT-1700FT/RE2009";
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break;
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case FE_TYPE_AT1700AT:
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typestr = "AT-1700AT/RE2005";
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break;
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case FE_TYPE_AT_UNKNOWN:
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typestr = "unknown AT-1700/RE2000";
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break;
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default:
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/* Unknown card type: maybe a new model, but... */
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aprint_error(": where did the card go?!\n");
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panic("unknown card");
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}
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aprint_normal(": %s Ethernet\n", typestr);
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/* This interface is always enabled. */
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sc->sc_stat |= FE_STAT_ENABLED;
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/*
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* Do generic MB86960 attach.
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*/
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mb86960_attach(sc, myea);
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mb86960_config(sc, NULL, 0, 0);
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/* Establish the interrupt handler. */
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isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
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IST_EDGE, IPL_NET, mb86960_intr, sc);
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if (isc->sc_ih == NULL)
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aprint_error_dev(sc->sc_dev,
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"couldn't establish interrupt handler\n");
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}
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