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/* $OpenBSD: oaic_syscon.c,v 1.1 2013/10/15 01:41:44 miod Exp $ */
/*
* Copyright (c) 2013 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <machine/autoconf.h>
#include <machine/board.h>
#include <machine/bus.h>
#include <machine/av400.h>
#include <aviion/dev/sysconvar.h>
#include <dev/ic/aic6250reg.h>
#include <dev/ic/aic6250var.h>
int oaic_syscon_match(struct device *, void *, void *);
void oaic_syscon_attach(struct device *, struct device *, void *);
struct oaic_syscon_softc {
struct aic6250_softc sc_base;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct intrhand sc_ih;
};
const struct cfattach oaic_syscon_ca = {
sizeof(struct oaic_syscon_softc),
oaic_syscon_match, oaic_syscon_attach
};
uint8_t oaic_read(struct aic6250_softc *, uint);
void oaic_write(struct aic6250_softc *, uint, uint8_t);
int
oaic_syscon_match(struct device *parent, void *match, void *aux)
{
struct confargs *ca = aux;
switch (cpuid) {
#ifdef AV400
case AVIION_300_310:
case AVIION_400_4000:
case AVIION_410_4100:
case AVIION_300C_310C:
case AVIION_300CD_310CD:
case AVIION_300D_310D:
case AVIION_4300_25:
case AVIION_4300_20:
case AVIION_4300_16:
switch (ca->ca_paddr) {
case AV400_SCSI:
break;
default:
return 0;
}
break;
#endif
default:
return 0;
}
return 1;
}
void
oaic_syscon_attach(struct device *parent, struct device *self, void *aux)
{
struct oaic_syscon_softc *ssc = (struct oaic_syscon_softc *)self;
struct aic6250_softc *sc = (struct aic6250_softc *)self;
struct confargs *ca = aux;
bus_space_handle_t ioh;
int intsrc;
if (bus_space_map(ca->ca_iot, ca->ca_paddr, AIC_NREG << 2, 0,
&ioh) != 0) {
printf(": can't map registers\n");
return;
}
ssc->sc_iot = ca->ca_iot;
ssc->sc_ioh = ioh;
/*
* Do NOT ask any question about this.
*/
*(volatile uint32_t *)0xfff840c0 = 0x6e;
/*
* According to the hardware manual (chapter 10 ``Programming the
* Small Computer System Interface'', page 10-2), the ``Clock
* Frequency Mode'' bit in control register #1 must be clear. This
* hints the AIC6250 runs at 10MHz.
*/
sc->sc_freq = 10;
sc->sc_initiator = 7;
/* port A is an output port, single-ended mode */
sc->sc_cr0 = AIC_CR0_EN_PORT_A;
/* port B used as the upper 8 bits of the 16-bit DMA path */
sc->sc_cr1 = AIC_CR1_ENABLE_16BIT_MEM_BUS;
sc->sc_read = oaic_read;
sc->sc_write = oaic_write;
aic6250_attach(sc);
ssc->sc_ih.ih_fn = (int(*)(void *))aic6250_intr;
ssc->sc_ih.ih_arg = sc;
ssc->sc_ih.ih_flags = 0;
ssc->sc_ih.ih_ipl = IPL_BIO;
intsrc = INTSRC_SCSI1;
sysconintr_establish(intsrc, &ssc->sc_ih, self->dv_xname);
}
uint8_t
oaic_read(struct aic6250_softc *sc, uint reg)
{
struct oaic_syscon_softc *ssc = (struct oaic_syscon_softc *)sc;
uint32_t rc;
rc = bus_space_read_4(ssc->sc_iot, ssc->sc_ioh, reg << 2);
return rc & 0xff;
}
void
oaic_write(struct aic6250_softc *sc, uint reg, uint8_t val)
{
struct oaic_syscon_softc *ssc = (struct oaic_syscon_softc *)sc;
bus_space_write_4(ssc->sc_iot, ssc->sc_ioh, reg << 2, val);
}
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