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/* $OpenBSD: sii_fwio.c,v 1.1 2008/08/18 23:19:25 miod Exp $ */
/*
* Copyright (c) 2008 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 <machine/bus.h>
#include <uvm/uvm_extern.h>
#include <vax/mbus/mbusreg.h>
#include <vax/mbus/mbusvar.h>
#include <vax/mbus/fwioreg.h>
#include <vax/mbus/fwiovar.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <scsi/scsi_message.h>
#include <vax/dec/siireg.h>
#include <vax/dec/siivar.h>
struct sii_fwio_softc {
struct sii_softc sc_dev;
u_char *sc_buf;
};
int sii_fwio_match(struct device *, void *, void *);
void sii_fwio_attach(struct device *, struct device *, void *);
struct cfattach sii_fwio_ca = {
sizeof(struct sii_fwio_softc), sii_fwio_match, sii_fwio_attach
};
extern struct cfdriver sii_cd;
void sii_fwio_copyfrombuf(void *, u_int, u_char *, int);
void sii_fwio_copytobuf(void *, u_char *, u_int, int);
int sii_fwio_intr(void *);
int
sii_fwio_match(struct device *parent, void *vcf, void *aux)
{
struct fwio_attach_args *faa = (struct fwio_attach_args *)aux;
return strcmp(faa->faa_dev, sii_cd.cd_name) == 0 ? 1 : 0;
}
void
sii_fwio_attach(struct device *parent, struct device *self, void *aux)
{
struct fwio_attach_args *faa = (struct fwio_attach_args *)aux;
struct sii_fwio_softc *sfc = (struct sii_fwio_softc *)self;
struct sii_softc *sc = &sfc->sc_dev;
unsigned int vec;
vec = faa->faa_vecbase + FBIC_DEVIRQ0 * 4;
printf(" vec %d", vec);
/*
* Map registers.
*/
sc->sc_regs =
(SIIRegs *)vax_map_physmem(faa->faa_base + FWIO_SII_REG_OFFSET, 1);
/*
* Map buffers.
*/
sfc->sc_buf = (u_char *)uvm_km_valloc(kernel_map, FWIO_SII_BUF_SIZE);
if (sfc->sc_buf == NULL) {
vax_unmap_physmem(faa->faa_base + FWIO_SII_REG_OFFSET, 1);
printf(": can't map buffers\n");
return;
}
ioaccess((vaddr_t)sfc->sc_buf, faa->faa_base + FWIO_SII_BUF_OFFSET,
FWIO_SII_BUF_SIZE >> VAX_PGSHIFT);
sc->sii_copytobuf = sii_fwio_copytobuf;
sc->sii_copyfrombuf = sii_fwio_copyfrombuf;
/*
* Register interrupt handler.
*/
if (mbus_intr_establish(vec, IPL_BIO, sii_fwio_intr, sfc,
self->dv_xname) != 0) {
vax_unmap_physmem(faa->faa_base + FWIO_SII_REG_OFFSET, 1);
uvm_km_free(kernel_map, (vaddr_t)sfc->sc_buf,
FWIO_SII_BUF_SIZE);
printf(": can't establish interrupt\n");
return;
}
/*
* Complete attachment.
*/
sc->sc_hostid = 7; /* hardcoded */
sii_attach(sc);
}
int
sii_fwio_intr(void *v)
{
struct sii_softc *sc = (struct sii_softc *)v;
int rc;
uint16_t csr;
/*
* FBIC expects edge interrupts, while the sii does level
* interrupts. To avoid missing interrupts while servicing,
* we disable further device interrupts while servicing.
*/
csr = sc->sc_regs->csr;
sc->sc_regs->csr = csr & ~SII_IE;
rc = sii_intr(v);
sc->sc_regs->csr = csr;
return rc;
}
/*
* Copy data between the fixed SCSI buffers. The sii driver only ``knows''
* offsets inside the SCSI buffer.
*/
void
sii_fwio_copyfrombuf(void *v, u_int offs, u_char *dst, int len)
{
struct sii_fwio_softc *sc = (struct sii_fwio_softc *)v;
u_char *src = sc->sc_buf + offs;
memcpy(dst, src, len);
}
void
sii_fwio_copytobuf(void *v, u_char *src, u_int offs, int len)
{
struct sii_fwio_softc *sc = (struct sii_fwio_softc *)v;
u_char *dst = sc->sc_buf + offs;
memcpy(dst, src, len);
}
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