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/* $OpenBSD: spdmem_mainbus.c,v 1.1 2010/03/22 21:22:08 miod Exp $ */
/*
* Copyright (c) 2010 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Display SPD memory information obtained from an IP35 brick L1 controller.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <dev/spdmemvar.h>
#include <mips64/archtype.h>
#include <machine/autoconf.h>
#include <sgi/sgi/l1.h>
struct spdmem_mainbus_softc {
struct spdmem_softc sc_base;
uint8_t *sc_spd;
size_t sc_spdlen;
};
int spdmem_mainbus_match(struct device *, void *, void *);
void spdmem_mainbus_attach(struct device *, struct device *, void *);
uint8_t spdmem_mainbus_read(struct spdmem_softc *, uint8_t);
struct cfattach spdmem_mainbus_ca = {
sizeof(struct spdmem_mainbus_softc),
spdmem_mainbus_match, spdmem_mainbus_attach
};
int
spdmem_mainbus_match(struct device *parent, void *vcf, void *aux)
{
struct spdmem_attach_args *saa = (struct spdmem_attach_args *)aux;
extern struct cfdriver spdmem_cd;
int rc;
uint8_t *spd;
size_t spdlen;
if (sys_config.system_type != SGI_IP35)
return 0;
if (strcmp(saa->maa.maa_name, spdmem_cd.cd_name) != 0)
return 0;
rc = l1_get_brick_spd_record(saa->maa.maa_nasid, saa->dimm,
&spd, &spdlen);
if (rc == 0) {
free(spd, M_DEVBUF);
return 1;
} else
return 0;
}
void
spdmem_mainbus_attach(struct device *parent, struct device *self, void *aux)
{
struct spdmem_mainbus_softc *sc = (struct spdmem_mainbus_softc *)self;
struct spdmem_attach_args *saa = (struct spdmem_attach_args *)aux;
int rc;
printf(" dimm %d:", saa->dimm);
rc = l1_get_brick_spd_record(saa->maa.maa_nasid, saa->dimm,
&sc->sc_spd, &sc->sc_spdlen);
if (rc != 0) {
printf(" can't get SPD record from L1, error %d\n", rc);
return;
}
sc->sc_base.sc_read = spdmem_mainbus_read;
spdmem_attach_common(&sc->sc_base);
/* free record, as it won't be accessed anymore */
sc->sc_spdlen = 0;
free(sc->sc_spd, M_DEVBUF);
}
uint8_t
spdmem_mainbus_read(struct spdmem_softc *v, uint8_t reg)
{
struct spdmem_mainbus_softc *sc = (struct spdmem_mainbus_softc *)v;
if (reg < sc->sc_spdlen)
return sc->sc_spd[reg];
else
return 0;
}
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