NetBSD/sys/arch/mvme68k/dev/vme_pcc.c

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/* $NetBSD: vme_pcc.c,v 1.7 2000/03/18 22:33:04 scw Exp $ */
/*-
* Copyright (c) 1996-2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe and Steve C. Woodford.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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 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.
*/
/*
* VME support specific to the Type 1 VMEchip found on the
* MVME-147.
*
* For a manual on the MVME-147, call: 408.991.8634. (Yes, this
* is the Sunnyvale sales office.)
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/kcore.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <dev/vme/vmereg.h>
#include <dev/vme/vmevar.h>
#include <mvme68k/mvme68k/isr.h>
#include <mvme68k/dev/pccreg.h>
#include <mvme68k/dev/pccvar.h>
#include <mvme68k/dev/vme_pccreg.h>
#include <mvme68k/dev/vme_pccvar.h>
int vme_pcc_match __P((struct device *, struct cfdata *, void *));
void vme_pcc_attach __P((struct device *, struct device *, void *));
struct cfattach vmepcc_ca = {
sizeof(struct vme_pcc_softc), vme_pcc_match, vme_pcc_attach
};
extern struct cfdriver vmepcc_cd;
1998-01-12 22:51:03 +03:00
extern phys_ram_seg_t mem_clusters[];
static int vme_pcc_attached;
#ifdef DIAGNOSTIC
const char *_vme1_mod_string __P((vme_addr_t, vme_size_t,
vme_am_t, vme_datasize_t));
#endif
/*
* Describe the VMEbus ranges available from the MVME147
*/
struct vme_pcc_range {
vme_am_t pr_am; /* Address Modifier for this range */
vme_datasize_t pr_datasize; /* Usable Data Sizes (D8, D16, * D32) */
vme_addr_t pr_locstart; /* Local-bus start address of range */
vme_addr_t pr_start; /* VMEbus start address of range */
vme_addr_t pr_end; /* VMEbus end address of range */
};
static struct vme_pcc_range vme_pcc_ranges[] = {
{VME_AM_MBO | VME_AM_A24 | VME_AM_DATA | VME_AM_SUPER,
VME_D32 | VME_D16 | VME_D8,
VME1_A24D32_LOC_START,
VME1_A24D32_START,
VME1_A24D32_END},
{VME_AM_MBO | VME_AM_A32 | VME_AM_DATA | VME_AM_SUPER,
VME_D32 | VME_D16 | VME_D8,
VME1_A32D32_LOC_START,
VME1_A32D32_START,
VME1_A32D32_END},
{VME_AM_MBO | VME_AM_A24 | VME_AM_DATA | VME_AM_SUPER,
VME_D16 | VME_D8,
VME1_A24D16_LOC_START,
VME1_A24D16_START,
VME1_A24D16_END},
{VME_AM_MBO | VME_AM_A32 | VME_AM_DATA | VME_AM_SUPER,
VME_D16 | VME_D8,
VME1_A32D16_LOC_START,
VME1_A32D16_START,
VME1_A32D16_END},
{VME_AM_MBO | VME_AM_A16 | VME_AM_DATA | VME_AM_SUPER,
VME_D16 | VME_D8,
VME1_A16D16_LOC_START,
VME1_A16D16_START,
VME1_A16D16_END}
};
#define VME1_NRANGES (sizeof(vme_pcc_ranges)/sizeof(struct vme_pcc_range))
/* ARGSUSED */
int
vme_pcc_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct pcc_attach_args *pa;
pa = aux;
/* Only one VME chip, please. */
if (vme_pcc_attached)
return (0);
if (strcmp(pa->pa_name, vmepcc_cd.cd_name))
return (0);
return (1);
}
void
vme_pcc_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct pcc_attach_args *pa;
struct vme_pcc_softc *sc;
struct vmebus_attach_args vaa;
u_int8_t reg;
int i;
sc = (struct vme_pcc_softc *) self;
pa = aux;
sc->sc_dmat = pa->pa_dmat;
sc->sc_bust = pa->pa_bust;
sc->sc_vmet = MVME68K_VME_BUS_SPACE;
bus_space_map(sc->sc_bust, pa->pa_offset, VME1REG_SIZE, 0,
&sc->sc_bush);
/* Initialize the chip. */
reg = vme1_reg_read(sc, VME1REG_SCON) & ~VME1_SCON_SYSFAIL;
vme1_reg_write(sc, VME1REG_SCON, reg);
1996-10-13 07:29:05 +04:00
printf(": Type 1 VMEchip, scon jumper %s\n",
(reg & VME1_SCON_SWITCH) ? "enabled" : "disabled");
sc->sc_vct.cookie = self;
sc->sc_vct.vct_probe = _vme_pcc_probe;
sc->sc_vct.vct_map = _vme_pcc_map;
sc->sc_vct.vct_unmap = _vme_pcc_unmap;
sc->sc_vct.vct_int_map = _vme_pcc_intmap;
sc->sc_vct.vct_int_establish = _vme_pcc_intr_establish;
sc->sc_vct.vct_int_disestablish = _vme_pcc_intr_disestablish;
sc->sc_vct.vct_dmamap_create = _vme_pcc_dmamap_create;
sc->sc_vct.vct_dmamap_destroy = _vme_pcc_dmamap_destroy;
sc->sc_vct.vct_dmamem_alloc = _vme_pcc_dmamem_alloc;
sc->sc_vct.vct_dmamem_free = _vme_pcc_dmamem_free;
/*
* Adjust the start address of the first range in vme_pcc_ranges[]
* according to how much onboard memory exists. Disable the first
* range if onboard memory >= 16Mb, and adjust the start of the
* second range (A32D32).
*/
vme_pcc_ranges[0].pr_start = (vme_addr_t) mem_clusters[0].size;
if (mem_clusters[0].size >= 0x01000000) {
vme_pcc_ranges[0].pr_am = (vme_am_t) - 1;
vme_pcc_ranges[1].pr_start +=
(vme_addr_t) (mem_clusters[0].size - 0x01000000);
}
#ifdef DIAGNOSTIC
for (i = 0; i < VME1_NRANGES; i++) {
vme_addr_t mask;
switch (vme_pcc_ranges[i].pr_am & VME_AM_ADRSIZEMASK) {
case VME_AM_A32:
mask = 0xffffffffu;
break;
case VME_AM_A24:
mask = 0x00ffffffu;
break;
case VME_AM_A16:
mask = 0x0000ffffu;
break;
default:
printf("%s: Map#%d: disabled\n",
sc->sc_dev.dv_xname, i);
continue;
}
printf("%s: Map#%d: 0x%08x -> %s\n", sc->sc_dev.dv_xname, i,
vme_pcc_ranges[i].pr_locstart + vme_pcc_ranges[i].pr_start,
_vme1_mod_string(vme_pcc_ranges[i].pr_start & mask,
(vme_pcc_ranges[i].pr_end -
vme_pcc_ranges[i].pr_start) + 1,
vme_pcc_ranges[i].pr_am,
vme_pcc_ranges[i].pr_datasize));
}
#endif
vaa.va_vct = &(sc->sc_vct);
vaa.va_bdt = sc->sc_dmat;
vaa.va_slaveconfig = NULL;
vme_pcc_attached = 1;
/* Attach the MI VMEbus glue. */
config_found(self, &vaa, 0);
}
/* ARGSUSED */
int
_vme_pcc_map(vsc, vmeaddr, len, am, datasize, swap, tag, handle, resc)
void *vsc;
vme_addr_t vmeaddr;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasize;
vme_swap_t swap;
bus_space_tag_t *tag;
bus_space_handle_t *handle;
vme_mapresc_t *resc;
{
struct vme_pcc_softc *sc;
struct vme_pcc_mapresc_t *pm;
struct vme_pcc_range *pr;
vme_addr_t end;
paddr_t paddr;
int rv;
int i;
sc = vsc;
end = (vmeaddr + len) - 1;
paddr = 0;
for (i = 0, pr = &vme_pcc_ranges[0]; i < VME1_NRANGES; i++, pr++) {
/* Ignore if range is disabled */
if (pr->pr_am == (vme_am_t) - 1)
continue;
/*
* Accept the range if it matches the constraints
*/
if (am == pr->pr_am &&
datasize <= pr->pr_datasize &&
vmeaddr >= pr->pr_start && end <= pr->pr_end) {
/*
* We have a match.
*/
paddr = pr->pr_locstart + vmeaddr;
break;
}
}
if (paddr == 0) {
#ifdef DIAGNOSTIC
printf("%s: Unable to map %s\n", sc->sc_dev.dv_xname,
_vme1_mod_string(vmeaddr, len, am, datasize));
#endif
return (ENOMEM);
}
if ((rv = bus_space_map(sc->sc_vmet, paddr, len, 0, handle)) != 0)
return (rv);
if ((pm = malloc(sizeof(*pm), M_DEVBUF, M_NOWAIT)) == NULL) {
bus_space_unmap(sc->sc_vmet, *handle, len);
return (ENOMEM);
}
*tag = sc->sc_vmet;
pm->pm_am = am;
pm->pm_datasize = datasize;
pm->pm_addr = vmeaddr;
pm->pm_size = len;
pm->pm_handle = *handle;
*resc = (vme_mapresc_t *) pm;
return (0);
}
void
_vme_pcc_unmap(vsc, resc)
void *vsc;
vme_mapresc_t resc;
{
struct vme_pcc_softc *sc;
struct vme_pcc_mapresc_t *pm;
sc = (struct vme_pcc_softc *) vsc;
pm = (struct vme_pcc_mapresc_t *) resc;
bus_space_unmap(sc->sc_vmet, pm->pm_handle, pm->pm_size);
free(pm, M_DEVBUF);
}
int
_vme_pcc_probe(vsc, vmeaddr, len, am, datasize, callback, arg)
void *vsc;
vme_addr_t vmeaddr;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasize;
int (*callback) __P((void *, bus_space_tag_t, bus_space_handle_t));
void *arg;
{
bus_space_tag_t tag;
bus_space_handle_t handle;
vme_mapresc_t resc;
int rv;
rv = _vme_pcc_map(vsc, vmeaddr, len, am, datasize,
0, &tag, &handle, &resc);
if (rv)
return (rv);
if (callback)
rv = (*callback) (arg, tag, handle);
else {
/*
* FIXME: datasize is fixed by hardware, so using badaddr() in
* this way may cause several accesses to each VMEbus address.
* Also, using 'handle' in this way is a bit presumptuous...
*/
rv = badaddr((caddr_t) handle, (int) len) ? EIO : 0;
}
_vme_pcc_unmap(vsc, resc);
return (rv);
}
/* ARGSUSED */
int
_vme_pcc_intmap(vsc, level, vector, handlep)
void *vsc;
int level, vector;
vme_intr_handle_t *handlep;
{
if (level < 1 || level > 7 || vector < 0x80 || vector > 0xff)
return (EINVAL);
/* This is rather gross */
*handlep = (void *) (int) ((level << 8) | vector);
return (0);
}
void *
_vme_pcc_intr_establish(vsc, handle, prior, func, arg)
void *vsc;
vme_intr_handle_t handle;
int prior;
int (*func) __P((void *));
void *arg;
{
struct vme_pcc_softc *sc;
int level, vector;
sc = vsc;
level = ((int) handle) >> 8;
vector = ((int) handle) & 0xff;
isrlink_vectored(func, arg, level, vector);
sc->sc_irqref[level]++;
/*
* There had better not be another VMEbus master responding
* to this interrupt level...
*/
vme1_reg_write(sc, VME1REG_IRQEN,
vme1_reg_read(sc, VME1REG_IRQEN) | VME1_IRQ_VME(level));
return ((void *) handle);
}
void
_vme_pcc_intr_disestablish(vsc, handle)
void *vsc;
vme_intr_handle_t handle;
{
struct vme_pcc_softc *sc;
int level, vector;
sc = (struct vme_pcc_softc *) vsc;
level = ((int) handle) >> 8;
vector = ((int) handle) & 0xff;
isrunlink_vectored(vector);
/* Disable VME IRQ if possible. */
switch (sc->sc_irqref[level]) {
case 0:
printf("vme_pcc_intr_disestablish: nothing using IRQ %d\n",
level);
panic("vme_pcc_intr_disestablish");
/* NOTREACHED */
case 1:
vme1_reg_write(sc, VME1REG_IRQEN,
vme1_reg_read(sc, VME1REG_IRQEN) & ~VME1_IRQ_VME(level));
/* FALLTHROUGH */
default:
sc->sc_irqref[level]--;
}
}
/* ARGSUSED */
int
_vme_pcc_dmamap_create(vsc, len, am, datasize, swap, nsegs,
segsz, bound, flags, mapp)
void *vsc;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasize;
vme_swap_t swap;
int nsegs;
vme_size_t segsz;
vme_addr_t bound;
int flags;
bus_dmamap_t *mapp;
{
return (EINVAL);
}
/* ARGSUSED */
void
_vme_pcc_dmamap_destroy(vsc, map)
void *vsc;
bus_dmamap_t map;
{
}
/* ARGSUSED */
int
_vme_pcc_dmamem_alloc(vsc, len, am, datasizes, swap,
segs, nsegs, rsegs, flags)
void *vsc;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasizes;
vme_swap_t swap;
bus_dma_segment_t *segs;
int nsegs;
int *rsegs;
int flags;
{
return (EINVAL);
}
/* ARGSUSED */
void
_vme_pcc_dmamem_free(vsc, segs, nsegs)
void *vsc;
bus_dma_segment_t *segs;
int nsegs;
{
}
#ifdef DIAGNOSTIC
const char *
_vme1_mod_string(addr, len, am, ds)
vme_addr_t addr;
vme_size_t len;
vme_am_t am;
vme_datasize_t ds;
{
static const char *mode[] = {"BLT64)", "DATA)", "PROG)", "BLT32)"};
static const char *dsiz[] = {"(", "(D8,", "(D16,", "(D16-D8,",
"(D32,", "(D32,D8,", "(D32-D16,", "(D32-D8,"};
static char mstring[40];
char *fmt;
switch (am & VME_AM_ADRSIZEMASK) {
case VME_AM_A32:
fmt = "A32:%08x-%08x ";
break;
case VME_AM_A24:
fmt = "A24:%06x-%06x ";
break;
case VME_AM_A16:
fmt = "A16:%04x-%04x ";
break;
case VME_AM_USERDEF:
fmt = "USR:%08x-%08x ";
break;
}
sprintf(mstring, fmt, addr, addr + len - 1);
strcat(mstring, dsiz[ds & 0x7]);
strcat(mstring, ((am & VME_AM_PRIVMASK) == VME_AM_USER) ?
"USER," : "SUPER,");
strcat(mstring, mode[am & VME_AM_MODEMASK]);
return (mstring);
}
#endif