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/* $OpenBSD: if_le_syscon.c,v 1.7 2009/04/14 16:01:04 oga Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass and Gordon W. Ross.
*
* 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.
*
* 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 REGENTS 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/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <uvm/uvm.h>
#include <net/if.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <net/if_media.h>
#include <machine/autoconf.h>
#include <machine/board.h>
#include <machine/cpu.h>
#include <aviion/dev/sysconvar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
/*
* LANCE registers. Although these are 16 bit registers, on the AV400
* design, they need to be accessed as 32 bit registers. Bus magic...
* The real stuff is in dev/ic/am7990reg.h
*/
struct av_lereg {
volatile u_int32_t ler1_rdp; /* data port */
volatile u_int32_t ler1_rap; /* register select port */
};
/*
* Ethernet software status per interface.
* The real stuff is in dev/ic/am7990var.h
*/
struct le_softc {
struct am7990_softc sc_am7990; /* glue to MI code */
struct av_lereg *sc_r1; /* LANCE registers */
struct intrhand sc_ih;
};
int le_syscon_match(struct device *, void *, void *);
void le_syscon_attach(struct device *, struct device *, void *);
struct cfattach le_syscon_ca = {
sizeof(struct le_softc), le_syscon_match, le_syscon_attach
};
void le_syscon_wrcsr(struct am7990_softc *, u_int16_t, u_int16_t);
u_int16_t le_syscon_rdcsr(struct am7990_softc *, u_int16_t);
void
le_syscon_wrcsr(sc, port, val)
struct am7990_softc *sc;
u_int16_t port, val;
{
struct av_lereg *ler1 = ((struct le_softc *)sc)->sc_r1;
ler1->ler1_rap = port;
ler1->ler1_rdp = val;
}
u_int16_t
le_syscon_rdcsr(sc, port)
struct am7990_softc *sc;
u_int16_t port;
{
struct av_lereg *ler1 = ((struct le_softc *)sc)->sc_r1;
u_int16_t val;
ler1->ler1_rap = port;
val = ler1->ler1_rdp;
return (val);
}
int
le_syscon_match(parent, cf, aux)
struct device *parent;
void *cf, *aux;
{
if (avtyp != AV_400)
return (0);
return (1);
}
void
le_syscon_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct le_softc *lesc = (struct le_softc *)self;
struct am7990_softc *sc = &lesc->sc_am7990;
struct confargs *ca = aux;
u_int etherpages;
struct pglist pglist;
vm_page_t pg;
int rc;
paddr_t pa;
vaddr_t va;
/*
* Allocate contiguous pages in the first 16MB to use as buffers.
*/
if (physmem >= atop(32 * 1024 * 1024))
etherpages = 64;
else if (physmem >= atop(16 * 1024 * 1024))
etherpages = 32;
else
etherpages = 16;
for (;;) {
TAILQ_INIT(&pglist);
rc = uvm_pglistalloc(ptoa(etherpages), 0, 1 << 24,
0, 0, &pglist, 1, UVM_PLA_NOWAIT);
if (rc == 0)
break;
etherpages >>= 1;
if (etherpages == 2) {
printf(": no available memory, kernel is too large\n");
return;
}
}
va = uvm_km_valloc(kernel_map, ptoa(etherpages));
if (va == NULL) {
printf(": can't map descriptor memory\n");
uvm_pglistfree(&pglist);
return;
}
pa = VM_PAGE_TO_PHYS(TAILQ_FIRST(&pglist));
sc->sc_mem = (void *)va;
sc->sc_addr = (u_long)pa & 0x00ffffff;
sc->sc_memsize = ptoa(etherpages);
TAILQ_FOREACH(pg, &pglist, pageq) {
pmap_enter(pmap_kernel(), va, pa,
UVM_PROT_RW, UVM_PROT_RW | PMAP_WIRED);
va += PAGE_SIZE;
pa += PAGE_SIZE;
}
pmap_cache_ctrl(pmap_kernel(), (vaddr_t)sc->sc_mem,
(vaddr_t)sc->sc_mem + sc->sc_memsize, CACHE_INH);
pmap_update(pmap_kernel());
lesc->sc_r1 = (struct av_lereg *)ca->ca_paddr;
sc->sc_conf3 = LE_C3_BSWP;
myetheraddr(sc->sc_arpcom.ac_enaddr);
sc->sc_copytodesc = am7990_copytobuf_contig;
sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
sc->sc_copytobuf = am7990_copytobuf_contig;
sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
sc->sc_zerobuf = am7990_zerobuf_contig;
sc->sc_rdcsr = le_syscon_rdcsr;
sc->sc_wrcsr = le_syscon_wrcsr;
sc->sc_hwreset = NULL;
sc->sc_hwinit = NULL;
am7990_config(sc);
lesc->sc_ih.ih_fn = am7990_intr;
lesc->sc_ih.ih_arg = sc;
lesc->sc_ih.ih_flags = 0;
lesc->sc_ih.ih_ipl = ca->ca_ipl;
sysconintr_establish(INTSRC_ETHERNET1, &lesc->sc_ih, self->dv_xname);
}
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