NetBSD/sys/dev/mvme/if_ie_mvme.c

355 lines
9.4 KiB
C

/* $NetBSD: if_ie_mvme.c,v 1.6 2003/07/14 15:47:19 lukem Exp $ */
/*-
* Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Steve C. Woodford.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ie_mvme.c,v 1.6 2003/07/14 15:47:19 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <dev/ic/i82586reg.h>
#include <dev/ic/i82586var.h>
#include <dev/mvme/if_iereg.h>
#include <dev/mvme/pcctwovar.h>
#include <dev/mvme/pcctworeg.h>
int ie_pcctwo_match __P((struct device *, struct cfdata *, void *));
void ie_pcctwo_attach __P((struct device *, struct device *, void *));
struct ie_pcctwo_softc {
struct ie_softc ps_ie;
bus_space_tag_t ps_bust;
bus_space_handle_t ps_bush;
struct evcnt ps_evcnt;
};
CFATTACH_DECL(ie_pcctwo, sizeof(struct ie_pcctwo_softc),
ie_pcctwo_match, ie_pcctwo_attach, NULL, NULL);
extern struct cfdriver ie_cd;
/* Functions required by the i82586 MI driver */
static void ie_reset __P((struct ie_softc *, int));
static int ie_intrhook __P((struct ie_softc *, int));
static void ie_hwinit __P((struct ie_softc *));
static void ie_atten __P((struct ie_softc *, int));
static void ie_copyin __P((struct ie_softc *, void *, int, size_t));
static void ie_copyout __P((struct ie_softc *, const void *, int, size_t));
static u_int16_t ie_read_16 __P((struct ie_softc *, int));
static void ie_write_16 __P((struct ie_softc *, int, u_int16_t));
static void ie_write_24 __P((struct ie_softc *, int, int));
/*
* i82596 Support Routines for MVME1[67][27] and MVME187 Boards
*/
static void
ie_reset(sc, why)
struct ie_softc *sc;
int why;
{
struct ie_pcctwo_softc *ps;
u_int32_t scp_addr;
ps = (struct ie_pcctwo_softc *) sc;
switch (why) {
case CHIP_PROBE:
case CARD_RESET:
bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER,
IE_PORT_RESET);
bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER, 0);
delay(1000);
/*
* Set the BUSY and BUS_USE bytes here, since the MI code
* incorrectly assumes it can use byte addressing to set it.
* (due to wrong-endianess of the chip)
*/
ie_write_16(sc, IE_ISCP_BUSY(sc->iscp), 1);
ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE);
scp_addr = sc->scp + (u_int) sc->sc_iobase;
scp_addr |= IE_PORT_ALT_SCP;
bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_UPPER,
scp_addr & 0xffff);
bus_space_write_2(ps->ps_bust, ps->ps_bush, IE_MPUREG_LOWER,
(scp_addr >> 16) & 0xffff);
delay(1000);
break;
}
}
/* ARGSUSED */
static int
ie_intrhook(sc, when)
struct ie_softc *sc;
int when;
{
struct ie_pcctwo_softc *ps;
u_int8_t reg;
ps = (struct ie_pcctwo_softc *) sc;
if (when == INTR_EXIT) {
reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR);
reg |= PCCTWO_ICR_ICLR;
pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg);
}
return (0);
}
/* ARGSUSED */
static void
ie_hwinit(sc)
struct ie_softc *sc;
{
u_int8_t reg;
reg = pcc2_reg_read(sys_pcctwo, PCC2REG_ETH_ICSR);
reg |= PCCTWO_ICR_IEN | PCCTWO_ICR_ICLR;
pcc2_reg_write(sys_pcctwo, PCC2REG_ETH_ICSR, reg);
}
/* ARGSUSED */
static void
ie_atten(sc, reason)
struct ie_softc *sc;
int reason;
{
struct ie_pcctwo_softc *ps;
ps = (struct ie_pcctwo_softc *) sc;
bus_space_write_4(ps->ps_bust, ps->ps_bush, IE_MPUREG_CA, 0);
}
static void
ie_copyin(sc, dst, offset, size)
struct ie_softc *sc;
void *dst;
int offset;
size_t size;
{
if (size == 0) /* This *can* happen! */
return;
#if 0
bus_space_read_region_1(sc->bt, sc->bh, offset, dst, size);
#else
/* A minor optimisation ;-) */
memcpy(dst, (void *) ((u_long) sc->bh + (u_long) offset), size);
#endif
}
static void
ie_copyout(sc, src, offset, size)
struct ie_softc *sc;
const void *src;
int offset;
size_t size;
{
if (size == 0) /* This *can* happen! */
return;
#if 0
bus_space_write_region_1(sc->bt, sc->bh, offset, src, size);
#else
/* A minor optimisation ;-) */
memcpy((void *) ((u_long) sc->bh + (u_long) offset), src, size);
#endif
}
static u_int16_t
ie_read_16(sc, offset)
struct ie_softc *sc;
int offset;
{
return (bus_space_read_2(sc->bt, sc->bh, offset));
}
static void
ie_write_16(sc, offset, value)
struct ie_softc *sc;
int offset;
u_int16_t value;
{
bus_space_write_2(sc->bt, sc->bh, offset, value);
}
static void
ie_write_24(sc, offset, addr)
struct ie_softc *sc;
int offset;
int addr;
{
addr += (int) sc->sc_iobase;
bus_space_write_2(sc->bt, sc->bh, offset, addr & 0xffff);
bus_space_write_2(sc->bt, sc->bh, offset + 2, (addr >> 16) & 0x00ff);
}
/* ARGSUSED */
int
ie_pcctwo_match(parent, cf, args)
struct device *parent;
struct cfdata *cf;
void *args;
{
struct pcctwo_attach_args *pa;
pa = args;
if (strcmp(pa->pa_name, ie_cd.cd_name))
return (0);
pa->pa_ipl = cf->pcctwocf_ipl;
return (1);
}
/* ARGSUSED */
void
ie_pcctwo_attach(parent, self, args)
struct device *parent;
struct device *self;
void *args;
{
struct pcctwo_attach_args *pa;
struct ie_pcctwo_softc *ps;
struct ie_softc *sc;
bus_dma_segment_t seg;
int rseg;
pa = (struct pcctwo_attach_args *) args;
ps = (struct ie_pcctwo_softc *) self;
sc = (struct ie_softc *) self;
/* Map the MPU controller registers in PCCTWO space */
ps->ps_bust = pa->pa_bust;
bus_space_map(pa->pa_bust, pa->pa_offset, IE_MPUREG_SIZE,
0, &ps->ps_bush);
/* Get contiguous DMA-able memory for the IE chip */
if (bus_dmamem_alloc(pa->pa_dmat, ether_data_buff_size, PAGE_SIZE, 0,
&seg, 1, &rseg,
BUS_DMA_NOWAIT | BUS_DMA_ONBOARD_RAM | BUS_DMA_24BIT) != 0) {
printf("%s: Failed to allocate ether buffer\n", self->dv_xname);
return;
}
if (bus_dmamem_map(pa->pa_dmat, &seg, rseg, ether_data_buff_size,
(caddr_t *) & sc->sc_maddr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) {
printf("%s: Failed to map ether buffer\n", self->dv_xname);
bus_dmamem_free(pa->pa_dmat, &seg, rseg);
return;
}
sc->bt = pa->pa_bust;
sc->bh = (bus_space_handle_t) sc->sc_maddr; /* XXXSCW Better way? */
sc->sc_iobase = (void *) seg.ds_addr;
sc->sc_msize = ether_data_buff_size;
memset(sc->sc_maddr, 0, ether_data_buff_size);
sc->hwreset = ie_reset;
sc->hwinit = ie_hwinit;
sc->chan_attn = ie_atten;
sc->intrhook = ie_intrhook;
sc->memcopyin = ie_copyin;
sc->memcopyout = ie_copyout;
sc->ie_bus_barrier = NULL;
sc->ie_bus_read16 = ie_read_16;
sc->ie_bus_write16 = ie_write_16;
sc->ie_bus_write24 = ie_write_24;
sc->sc_mediachange = NULL;
sc->sc_mediastatus = NULL;
sc->scp = 0;
sc->iscp = sc->scp + ((IE_SCP_SZ + 15) & ~15);
sc->scb = sc->iscp + IE_ISCP_SZ;
sc->buf_area = sc->scb + IE_SCB_SZ;
sc->buf_area_sz = sc->sc_msize - (sc->buf_area - sc->scp);
/*
* BUS_USE -> Interrupt Active High (edge-triggered),
* Lock function enabled,
* Internal bus throttle timer triggering,
* 82586 operating mode.
*/
ie_write_16(sc, IE_SCP_BUS_USE(sc->scp), IE_BUS_USE);
ie_write_24(sc, IE_SCP_ISCP(sc->scp), sc->iscp);
ie_write_16(sc, IE_ISCP_SCB(sc->iscp), sc->scb);
ie_write_24(sc, IE_ISCP_BASE(sc->iscp), sc->scp);
/* This has the side-effect of resetting the chip */
i82586_proberam(sc);
/* Attach the MI back-end */
i82586_attach(sc, "onboard", mvme_ea, NULL, 0, 0);
/* Register the event counter */
evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_INTR,
pcctwointr_evcnt(pa->pa_ipl), "ether", sc->sc_dev.dv_xname);
/* Finally, hook the hardware interrupt */
pcctwointr_establish(PCCTWOV_LANC_IRQ, i82586_intr, pa->pa_ipl, sc,
&ps->ps_evcnt);
}