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/* $NetBSD: if_ie_vme.c,v 1.23 2008/06/28 12:13:38 tsutsui Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by 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 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.
*/
/*
* Machine-dependent glue for the Intel Ethernet (ie) driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ie_vme.c,v 1.23 2008/06/28 12:13:38 tsutsui Exp $");
#include "opt_inet.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_ether.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <machine/dvma.h>
#include <machine/idprom.h>
#include <machine/vmparam.h>
#include "i82586.h"
#include "if_iereg.h"
#include "if_ievar.h"
static void ie_vmereset(struct ie_softc *);
static void ie_vmeattend(struct ie_softc *);
static void ie_vmerun(struct ie_softc *);
/*
* zero/copy functions: OBIO can use the normal functions, but VME
* must do only byte or half-word (16 bit) accesses...
*/
static void *wmemcpy(void *, const void *, size_t);
static void *wmemset(void *, int, size_t);
/*
* New-style autoconfig attachment
*/
static int ie_vme_match(device_t, cfdata_t, void *);
static void ie_vme_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(ie_vme, sizeof(struct ie_softc),
ie_vme_match, ie_vme_attach, NULL, NULL);
static int
ie_vme_match(device_t parent, cfdata_t cf, void *args)
{
struct confargs *ca = args;
/* No default VME address. */
if (ca->ca_paddr == -1)
return 0;
/* Make sure something is there... */
if (bus_peek(ca->ca_bustype, ca->ca_paddr, 2) == -1)
return 0;
/* Default interrupt priority. */
if (ca->ca_intpri == -1)
ca->ca_intpri = 3;
return 1;
}
/*
* *note*: we don't detect the difference between a VME3E and
* a multibus/vme card. if you want to use a 3E you'll have
* to fix this.
*/
void
ie_vme_attach(device_t parent, device_t self, void *args)
{
struct ie_softc *sc = device_private(self);
struct confargs *ca = args;
volatile struct ievme *iev;
u_long rampaddr;
int lcv, off;
sc->sc_dev = self;
sc->hard_type = IE_VME;
sc->reset_586 = ie_vmereset;
sc->chan_attn = ie_vmeattend;
sc->run_586 = ie_vmerun;
sc->sc_memcpy = wmemcpy;
sc->sc_memset = wmemset;
/*
* There is 64K of memory on the VME board.
* (determined by hardware - NOT configurable!)
*/
sc->sc_msize = 0x10000; /* MEMSIZE 64K */
/* Map in the board control regs. */
sc->sc_reg = bus_mapin(ca->ca_bustype, ca->ca_paddr,
sizeof(struct ievme));
iev = (volatile struct ievme *) sc->sc_reg;
/*
* Find and map in the board memory.
*/
/* top 12 bits */
rampaddr = ca->ca_paddr & 0xfff00000;
/* 4 more */
rampaddr |= ((iev->status & IEVME_HADDR) << 16);
sc->sc_maddr = bus_mapin(ca->ca_bustype, rampaddr, sc->sc_msize);
/*
* On this hardware, the i82586 address is just
* masked to 16 bits, so sc_iobase == sc_maddr
*/
sc->sc_iobase = sc->sc_maddr;
/*
* Set up on-board mapping registers for linear map.
*/
iev->pectrl |= IEVME_PARACK; /* clear to start */
for (lcv = 0; lcv < IEVME_MAPSZ; lcv++)
iev->pgmap[lcv] = IEVME_SBORDR | IEVME_OBMEM | lcv;
(sc->sc_memset)(sc->sc_maddr, 0, sc->sc_msize);
/*
* Set the System Configuration Pointer (SCP).
* Its location is system-dependent because the
* i82586 reads it from a fixed physical address.
* On this hardware, the i82586 address is just
* masked down to 16 bits, so the SCP is found
* at the end of the RAM on the VME board.
*/
off = IE_SCP_ADDR & 0xFFFF;
sc->scp = (volatile void *)((char *)sc->sc_maddr + off);
/*
* The rest of ram is used for buffers, etc.
*/
sc->buf_area = sc->sc_maddr;
sc->buf_area_sz = off;
/* Set the ethernet address. */
idprom_etheraddr(sc->sc_addr);
/* Do machine-independent parts of attach. */
ie_attach(sc);
/* Install interrupt handler. */
isr_add_vectored(ie_intr, sc, ca->ca_intpri, ca->ca_intvec);
}
/*
* MULTIBUS/VME support
*/
void
ie_vmeattend(struct ie_softc *sc)
{
volatile struct ievme *iev = (struct ievme *)sc->sc_reg;
iev->status |= IEVME_ATTEN; /* flag! */
iev->status &= ~IEVME_ATTEN; /* down. */
}
void
ie_vmereset(struct ie_softc *sc)
{
volatile struct ievme *iev = (struct ievme *)sc->sc_reg;
iev->status = IEVME_RESET;
delay(20);
iev->status = (IEVME_ONAIR | IEVME_IENAB | IEVME_PEINT);
}
void
ie_vmerun(struct ie_softc *sc)
{
/* do it all in reset */
}
/*
* wmemcpy/wmemset - like memcpy/memset but largest access is 16-bits,
* and also does byte swaps...
* XXX - Would be nice to have asm versions in some library...
*/
static void *
wmemset(void *vb, int val, size_t l)
{
uint8_t *b = vb;
uint8_t *be = b + l;
uint16_t *sp;
if (l == 0)
return vb;
/* front, */
if ((uint32_t)b & 1)
*b++ = val;
/* back, */
if (b != be && ((uint32_t)be & 1) != 0) {
be--;
*be = val;
}
/* and middle. */
sp = (uint16_t *)b;
while (sp != (uint16_t *)be)
*sp++ = val;
return vb;
}
static void *
wmemcpy(void *dst, const void *src, size_t l)
{
const uint8_t *b1e, *b1 = src;
uint8_t *b2 = dst;
const uint16_t *sp;
int bstore = 0;
if (l == 0)
return dst;
/* front, */
if ((uint32_t)b1 & 1) {
*b2++ = *b1++;
l--;
}
/* middle, */
sp = (const uint16_t *)b1;
b1e = b1 + l;
if (l & 1)
b1e--;
bstore = (uint32_t)b2 & 1;
while (sp < (const uint16_t *)b1e) {
if (bstore) {
b2[1] = *sp & 0xff;
b2[0] = *sp >> 8;
} else
*((uint16_t *)b2) = *sp;
sp++;
b2 += 2;
}
/* and back. */
if (l & 1)
*b2 = *b1e;
return dst;
}
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