/* $OpenBSD: gscbus.c,v 1.27 2005/06/09 18:01:36 mickey Exp $ */
/*
* Copyright (c) 1998 Michael Shalayeff
* All rights reserved.
*
* 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 AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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.
*/
/* #define GSCDEBUG */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/user.h>
#include <sys/mbuf.h>
#include <sys/reboot.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <machine/cpufunc.h>
#include <hppa/gsc/gscbusvar.h>
int gscmatch(struct device *, void *, void *);
void gscattach(struct device *, struct device *, void *);
struct cfattach gsc_ca = {
sizeof(struct gsc_softc), gscmatch, gscattach
};
struct cfdriver gsc_cd = {
NULL, "gsc", DV_DULL
};
int gsc_dmamap_create(void *, bus_size_t, int,
bus_size_t, bus_size_t, int, bus_dmamap_t *);
void gsc_dmamap_destroy(void *, bus_dmamap_t);
int gsc_dmamap_load(void *, bus_dmamap_t, void *,
bus_size_t, struct proc *, int);
int gsc_dmamap_load_mbuf(void *, bus_dmamap_t, struct mbuf *, int);
int gsc_dmamap_load_uio(void *, bus_dmamap_t, struct uio *, int);
int gsc_dmamap_load_raw(void *, bus_dmamap_t,
bus_dma_segment_t *, int, bus_size_t, int);
void gsc_dmamap_unload(void *, bus_dmamap_t);
void gsc_dmamap_sync(void *, bus_dmamap_t, bus_addr_t, bus_size_t,
int);
int gsc_dmamem_alloc(void *, bus_size_t, bus_size_t,
bus_size_t, bus_dma_segment_t *, int, int *, int);
void gsc_dmamem_free(void *, bus_dma_segment_t *, int);
int gsc_dmamem_map(void *, bus_dma_segment_t *,
int, size_t, caddr_t *, int);
void gsc_dmamem_unmap(void *, caddr_t, size_t);
paddr_t gsc_dmamem_mmap(void *, bus_dma_segment_t *, int, off_t, int, int);
int
gscmatch(parent, cfdata, aux)
struct device *parent;
void *cfdata;
void *aux;
{
struct confargs *ca = aux;
return !strcmp(ca->ca_name, "gsc");
}
void
gscattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct gsc_softc *sc = (struct gsc_softc *)self;
struct gsc_attach_args *ga = aux;
sc->sc_iot = ga->ga_iot;
sc->sc_ic = ga->ga_ic;
#ifdef USELEDS
if (machine_ledaddr)
printf(": %sleds", machine_ledword? "word" : "");
#endif
printf ("\n");
sc->sc_ih = cpu_intr_establish(IPL_NESTED, ga->ga_irq,
gsc_intr, (void *)sc->sc_ic->gsc_base, sc->sc_dev.dv_xname);
/* DMA guts */
sc->sc_dmatag._cookie = sc;
sc->sc_dmatag._dmamap_create = gsc_dmamap_create;
sc->sc_dmatag._dmamap_destroy = gsc_dmamap_destroy;
sc->sc_dmatag._dmamap_load = gsc_dmamap_load;
sc->sc_dmatag._dmamap_load_mbuf = gsc_dmamap_load_mbuf;
sc->sc_dmatag._dmamap_load_uio = gsc_dmamap_load_uio;
sc->sc_dmatag._dmamap_load_raw = gsc_dmamap_load_raw;
sc->sc_dmatag._dmamap_unload = gsc_dmamap_unload;
sc->sc_dmatag._dmamap_sync = gsc_dmamap_sync;
sc->sc_dmatag._dmamem_alloc = gsc_dmamem_alloc;
sc->sc_dmatag._dmamem_free = gsc_dmamem_free;
sc->sc_dmatag._dmamem_map = gsc_dmamem_map;
sc->sc_dmatag._dmamem_unmap = gsc_dmamem_unmap;
sc->sc_dmatag._dmamem_mmap = gsc_dmamem_mmap;
pdc_scanbus(self, &ga->ga_ca, MAXMODBUS, 0);
}
int
gscprint(aux, pnp)
void *aux;
const char *pnp;
{
struct gsc_attach_args *ga = aux;
if (pnp)
printf("%s at %s", ga->ga_name, pnp);
return (UNCONF);
}
void *
gsc_intr_establish(sc, irq, pri, handler, arg, name)
struct gsc_softc *sc;
int pri;
int irq;
int (*handler)(void *v);
void *arg;
const char *name;
{
volatile u_int32_t *r = sc->sc_ic->gsc_base;
void *iv;
if ((iv = cpu_intr_map(sc->sc_ih, pri, irq, handler, arg, name)))
r[1] |= (1 << irq);
else {
#ifdef GSCDEBUG
printf("%s: attaching irq %d, already occupied\n",
sc->sc_dev.dv_xname, irq);
#endif
}
return (iv);
}
void
gsc_intr_disestablish(sc, v)
struct gsc_softc *sc;
void *v;
{
#if notyet
volatile u_int32_t *r = sc->sc_ic->gsc_base;
r[1] &= ~(1 << irq);
cpu_intr_unmap(sc->sc_ih, v);
#endif
}
int
gsc_dmamap_create(v, size, nseg, maxsegsz, boundary, flags, dmamp)
void *v;
bus_size_t size;
int nseg;
bus_size_t maxsegsz;
bus_size_t boundary;
int flags;
bus_dmamap_t *dmamp;
{
return 0;
}
void
gsc_dmamap_destroy(v, map)
void *v;
bus_dmamap_t map;
{
}
int
gsc_dmamap_load(v, map, buf, buflen, p, flags)
void *v;
bus_dmamap_t map;
void *buf;
bus_size_t buflen;
struct proc *p;
int flags;
{
return 0;
}
int
gsc_dmamap_load_mbuf(v, map, mbuf, flags)
void *v;
bus_dmamap_t map;
struct mbuf *mbuf;
int flags;
{
return 0;
}
int
gsc_dmamap_load_uio(v, map, uio, flags)
void *v;
bus_dmamap_t map;
struct uio *uio;
int flags;
{
return 0;
}
int
gsc_dmamap_load_raw(v, map, segs, nsegs, size, flags)
void *v;
bus_dmamap_t map;
bus_dma_segment_t *segs;
int nsegs;
bus_size_t size;
int flags;
{
return 0;
}
void
gsc_dmamap_unload(v, map)
void *v;
bus_dmamap_t map;
{
}
void
gsc_dmamap_sync(v, map, offset, len, op)
void *v;
bus_dmamap_t map;
bus_addr_t offset;
bus_size_t len;
int op;
{
}
int
gsc_dmamem_alloc(v, size, alignment, boundary, segs, nsegs, rsegs, flags)
void *v;
bus_size_t size;
bus_size_t alignment;
bus_size_t boundary;
bus_dma_segment_t *segs;
int nsegs;
int *rsegs;
int flags;
{
return 0;
}
void
gsc_dmamem_free(v, segs, nsegs)
void *v;
bus_dma_segment_t *segs;
int nsegs;
{
}
int
gsc_dmamem_map(v, segs, nsegs, size, kvap, flags)
void *v;
bus_dma_segment_t *segs;
int nsegs;
size_t size;
caddr_t *kvap;
int flags;
{
return 0;
}
void
gsc_dmamem_unmap(v, kva, size)
void *v;
caddr_t kva;
size_t size;
{
}
paddr_t
gsc_dmamem_mmap(v, segs, nsegs, off, prot, flags)
void *v;
bus_dma_segment_t *segs;
int nsegs;
off_t off;
int prot;
int flags;
{
return (-1);
}