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/* $OpenBSD: siop_gsc.c,v 1.4 2007/08/23 21:01:22 kettenis Exp $ */
/*
* Copyright (c) 2007 Mark Kettenis
*
* 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.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/iomod.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <dev/ic/siopreg.h>
#include <dev/ic/siopvar_common.h>
#include <dev/ic/siopvar.h>
#include <hppa/dev/cpudevs.h>
#include <hppa/gsc/gscbusvar.h>
#define SIOP_GSC_RESET 0x0000
#define SIOP_GSC_OFFSET 0x0100
int siop_gsc_match(struct device *, void *, void *);
void siop_gsc_attach(struct device *, struct device *, void *);
int siop_gsc_intr(void *);
void siop_gsc_reset(struct siop_common_softc *);
u_int8_t siop_gsc_r1(void *, bus_space_handle_t, bus_size_t);
u_int16_t siop_gsc_r2(void *, bus_space_handle_t, bus_size_t);
void siop_gsc_w1(void *, bus_space_handle_t, bus_size_t, u_int8_t);
void siop_gsc_w2(void *, bus_space_handle_t, bus_size_t, u_int16_t);
struct siop_gsc_softc {
struct siop_softc sc_siop;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct hppa_bus_space_tag sc_bustag;
};
struct cfattach siop_gsc_ca = {
sizeof(struct siop_gsc_softc), siop_gsc_match, siop_gsc_attach
};
int
siop_gsc_match(struct device *parent, void *match, void *aux)
{
struct gsc_attach_args *ga = aux;
if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
ga->ga_type.iodc_sv_model != HPPA_FIO_FWSCSI)
return 0;
return 1;
}
void
siop_gsc_attach(struct device *parent, struct device *self, void *aux)
{
struct siop_gsc_softc *sc = (struct siop_gsc_softc *)self;
struct gsc_attach_args *ga = aux;
sc->sc_iot = ga->ga_iot;
if (bus_space_map(sc->sc_iot, ga->ga_hpa,
IOMOD_HPASIZE, 0, &sc->sc_ioh)) {
printf(": cannot map io space\n");
return;
}
sc->sc_bustag = *sc->sc_iot;
sc->sc_bustag.hbt_r1 = siop_gsc_r1;
sc->sc_bustag.hbt_r2 = siop_gsc_r2;
sc->sc_bustag.hbt_w1 = siop_gsc_w1;
sc->sc_bustag.hbt_w2 = siop_gsc_w2;
sc->sc_siop.sc_c.features = SF_CHIP_PF | SF_CHIP_BE | SF_BUS_WIDE;
sc->sc_siop.sc_c.maxburst = 4;
sc->sc_siop.sc_c.maxoff = 8;
sc->sc_siop.sc_c.clock_div = 3;
sc->sc_siop.sc_c.clock_period = 250;
sc->sc_siop.sc_c.ram_size = 0;
sc->sc_siop.sc_c.sc_reset = siop_gsc_reset;
sc->sc_siop.sc_c.sc_dmat = ga->ga_dmatag;
sc->sc_siop.sc_c.sc_rt = &sc->sc_bustag;
bus_space_subregion(sc->sc_iot, sc->sc_ioh, SIOP_GSC_OFFSET,
IOMOD_HPASIZE - SIOP_GSC_OFFSET, &sc->sc_siop.sc_c.sc_rh);
/*
* Reset the SCSI subsystem.
*/
bus_space_write_1(sc->sc_iot, sc->sc_ioh, SIOP_GSC_RESET, 0);
DELAY(1000);
siop_gsc_reset(&sc->sc_siop.sc_c);
gsc_intr_establish((struct gsc_softc *)parent, ga->ga_irq,
IPL_BIO, siop_intr, sc, sc->sc_siop.sc_c.sc_dev.dv_xname);
printf(": NCR53C720 rev %d\n", bus_space_read_1(sc->sc_siop.sc_c.sc_rt,
sc->sc_siop.sc_c.sc_rh, SIOP_CTEST3) >> 4);
siop_attach(&sc->sc_siop);
}
void
siop_gsc_reset(struct siop_common_softc *sc)
{
bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DCNTL, DCNTL_EA);
bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST0, CTEST0_EHP);
bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST4, CTEST4_MUX);
bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STIME0,
(0xc << STIME0_SEL_SHIFT));
}
u_int8_t
siop_gsc_r1(void *v, bus_space_handle_t h, bus_size_t o)
{
return *(volatile u_int8_t *)(h + (o ^ 3));
}
u_int16_t
siop_gsc_r2(void *v, bus_space_handle_t h, bus_size_t o)
{
if (o == SIOP_SIST0) {
u_int16_t reg;
reg = siop_gsc_r1(v, h, SIOP_SIST0);
reg |= siop_gsc_r1(v, h, SIOP_SIST1) << 8;
return reg;
}
return *(volatile u_int16_t *)(h + (o ^ 2));
}
void
siop_gsc_w1(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t vv)
{
*(volatile u_int8_t *)(h + (o ^ 3)) = vv;
}
void
siop_gsc_w2(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t vv)
{
*(volatile u_int16_t *)(h + (o ^ 2)) = vv;
}
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