NetBSD/sys/arch/alpha/pci/dwlpx.c

264 lines
7.2 KiB
C

/* $NetBSD: dwlpx.c,v 1.8 1997/06/08 07:59:20 thorpej Exp $ */
/*
* Copyright (c) 1997 by Matthew Jacob
* NASA AMES Research Center.
* 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 immediately at the beginning of the file, without modification,
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <machine/options.h> /* Config options headers */
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: dwlpx.c,v 1.8 1997/06/08 07:59:20 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <vm/vm.h>
#include <machine/autoconf.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/tlsb/tlsbreg.h>
#include <alpha/tlsb/kftxxvar.h>
#include <alpha/tlsb/kftxxreg.h>
#include <alpha/pci/dwlpxreg.h>
#include <alpha/pci/dwlpxvar.h>
#include <alpha/pci/pci_kn8ae.h>
#include <alpha/include/pmap.old.h>
#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
static int dwlpxmatch __P((struct device *, struct cfdata *, void *));
static void dwlpxattach __P((struct device *, struct device *, void *));
struct cfattach dwlpx_ca = {
sizeof(struct dwlpx_softc), dwlpxmatch, dwlpxattach
};
struct cfdriver dwlpx_cd = {
NULL, "dwlpx", DV_DULL,
};
static int dwlpxprint __P((void *, const char *));
static int
dwlpxprint(aux, pnp)
void *aux;
const char *pnp;
{
register struct pcibus_attach_args *pba = aux;
/* only PCIs can attach to DWLPX's; easy. */
if (pnp)
printf("%s at %s", pba->pba_busname, pnp);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
static int
dwlpxmatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct kft_dev_attach_args *ka = aux;
if (strcmp(ka->ka_name, dwlpx_cd.cd_name) != 0)
return (0);
return (1);
}
static void
dwlpxattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
static int once = 0;
struct dwlpx_softc *sc = (struct dwlpx_softc *)self;
struct dwlpx_config *ccp = &sc->dwlpx_cc;
struct kft_dev_attach_args *ka = aux;
struct pcibus_attach_args pba;
u_int32_t pcia_present;
sc->dwlpx_node = ka->ka_node;
sc->dwlpx_dtype = ka->ka_dtype;
sc->dwlpx_hosenum = ka->ka_hosenum;
/*
* On reads, you get a fault if you read a nonexisted HPC.
* The internal KFTIA hose (hose 0) has only 2 HPCs.
*/
sc->dwlpx_nhpc = NHPC;
if (sc->dwlpx_hosenum == 0) {
if (TLDEV_DTYPE(sc->dwlpx_dtype) == TLDEV_DTYPE_KFTIA) {
sc->dwlpx_nhpc = NHPC - 1;
}
}
dwlpx_init(sc);
/* XXX Need to detect DWLPA vs. DWLPB here. */
pcia_present = REGVAL(PCIA_PRESENT + ccp->cc_sysbase);
printf(": PCIA rev. %d, STD I/O %spresent\n",
(pcia_present >> PCIA_PRESENT_REVSHIFT) & PCIA_PRESENT_REVMASK,
(pcia_present & PCIA_PRESENT_STDIO) == 0 ? "not " : "");
#if 0
{
int hpc, slot, slotval;
const char *str;
for (hpc = 0; hpc < sc->dwlpx_nhpc; hpc++) {
for (slot = 0; slot < 4; slot++) {
slotval = (pcia_present >>
PCIA_PRESENT_SLOTSHIFT(hpc, slot)) &
PCIA_PRESENT_SLOT_MASK;
if (slotval == PCIA_PRESENT_SLOT_NONE)
continue;
switch (slotval) {
case PCIA_PRESENT_SLOT_25W:
str = "25";
break;
case PCIA_PRESENT_SLOT_15W:
str = "15";
break;
case PCIA_PRESENT_SLOW_7W:
default: /* XXX gcc */
str = "7.5";
break;
}
printf("%s: hpc %d slot %d: %s watt module\n",
sc->dwlpx_dev.dv_xname, hpc, slot, str);
}
}
}
#endif
if (once == 0) {
/*
* Set up interrupts
*/
pci_kn8ae_pickintr(&sc->dwlpx_cc, 1);
#ifdef EVCNT_COUNTERS
evcnt_attach(self, "intr", kn8ae_intr_evcnt);
#endif
once++;
} else {
pci_kn8ae_pickintr(&sc->dwlpx_cc, 0);
}
/*
* Attach PCI bus
*/
pba.pba_busname = "pci";
pba.pba_iot = sc->dwlpx_cc.cc_iot;
pba.pba_memt = sc->dwlpx_cc.cc_memt;
pba.pba_dmat = /* start with direct, may change... */
alphabus_dma_get_tag(&sc->dwlpx_cc.cc_dmat_direct, ALPHA_BUS_PCI);
pba.pba_pc = &sc->dwlpx_cc.cc_pc;
pba.pba_bus = 0;
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED;
config_found(self, &pba, dwlpxprint);
}
void
dwlpx_init(sc)
struct dwlpx_softc *sc;
{
int i;
struct dwlpx_config *ccp = &sc->dwlpx_cc;
if (ccp->cc_initted == 0) {
ccp->cc_iot = dwlpx_bus_io_init(ccp);
ccp->cc_memt = dwlpx_bus_mem_init(ccp);
}
dwlpx_pci_init(&ccp->cc_pc, ccp);
ccp->cc_sc = sc;
/*
* Establish a precalculated base for convenience's sake.
*/
ccp->cc_sysbase =
(((unsigned long)(sc->dwlpx_node - 4)) << 36) |
(((unsigned long) sc->dwlpx_hosenum) << 34) |
(1LL << 39);
/*
* Set up DMA stuff for this DWLPX.
*/
dwlpx_dma_init(ccp);
/*
* Set up interrupt stuff for this DWLPX.
*
* Note that all PCI interrupt pins are disabled at this time.
*
* Do this even for all HPCs- even for the nonexistent
* one on hose zero of a KFTIA.
*/
for (i = 0; i < NHPC; i++) {
REGVAL(PCIA_IMASK(i) + ccp->cc_sysbase) = DWLPX_IMASK_DFLT;
REGVAL(PCIA_ERRVEC(i) + ccp->cc_sysbase) =
DWLPX_ERRVEC((sc->dwlpx_node - 4), sc->dwlpx_hosenum);
}
for (i = 0; i < DWLPX_MAXDEV; i++) {
u_int16_t vec;
int ss, hpc;
vec = DWLPX_MVEC((sc->dwlpx_node - 4), sc->dwlpx_hosenum, i);
ss = i;
if (i < 4) {
hpc = 0;
} else if (i < 8) {
ss -= 4;
hpc = 1;
} else {
ss -= 8;
hpc = 2;
}
REGVAL(PCIA_DEVVEC(hpc, ss, 1) + ccp->cc_sysbase) = vec;
REGVAL(PCIA_DEVVEC(hpc, ss, 2) + ccp->cc_sysbase) = vec;
REGVAL(PCIA_DEVVEC(hpc, ss, 3) + ccp->cc_sysbase) = vec;
REGVAL(PCIA_DEVVEC(hpc, ss, 4) + ccp->cc_sysbase) = vec;
}
/*
* Establish HAE values, as well as make sure of sanity elsewhere.
*/
for (i = 0; i < sc->dwlpx_nhpc; i++) {
u_int32_t ctl = REGVAL(PCIA_CTL(i) + ccp->cc_sysbase);
ctl &= 0x0fffffff;
ctl &= ~((0x1f << 14) | (0x1f << 9) | 0x3);
#if 0
ctl |= ((1 << 14) | (1 << 9));
#endif
REGVAL(PCIA_CTL(i) + ccp->cc_sysbase) = ctl;
}
ccp->cc_initted = 1;
}