NetBSD-5.0.2/sys/arch/alpha/pci/pci_kn8ae.c
/* $NetBSD: pci_kn8ae.c,v 1.21 2002/05/15 16:57:43 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 <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: pci_kn8ae.c,v 1.21 2002/05/15 16:57:43 thorpej Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/syslog.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/dwlpxreg.h>
#include <alpha/pci/dwlpxvar.h>
#include <alpha/pci/pci_kn8ae.h>
int dec_kn8ae_intr_map __P((struct pci_attach_args *,
pci_intr_handle_t *));
const char *dec_kn8ae_intr_string __P((void *, pci_intr_handle_t));
const struct evcnt *dec_kn8ae_intr_evcnt __P((void *, pci_intr_handle_t));
void *dec_kn8ae_intr_establish __P((void *, pci_intr_handle_t,
int, int (*func)(void *), void *));
void dec_kn8ae_intr_disestablish __P((void *, void *));
static u_int32_t imaskcache[DWLPX_NIONODE][DWLPX_NHOSE][NHPC];
void kn8ae_spurious __P((void *, u_long));
void kn8ae_enadis_intr __P((struct dwlpx_config *, pci_intr_handle_t, int));
void
pci_kn8ae_pickintr(ccp, first)
struct dwlpx_config *ccp;
int first;
{
int io, hose, dev;
pci_chipset_tag_t pc = &ccp->cc_pc;
pc->pc_intr_v = ccp;
pc->pc_intr_map = dec_kn8ae_intr_map;
pc->pc_intr_string = dec_kn8ae_intr_string;
pc->pc_intr_evcnt = dec_kn8ae_intr_evcnt;
pc->pc_intr_establish = dec_kn8ae_intr_establish;
pc->pc_intr_disestablish = dec_kn8ae_intr_disestablish;
/* Not supported on KN8AE. */
pc->pc_pciide_compat_intr_establish = NULL;
if (!first) {
return;
}
for (io = 0; io < DWLPX_NIONODE; io++) {
for (hose = 0; hose < DWLPX_NHOSE; hose++) {
for (dev = 0; dev < NHPC; dev++) {
imaskcache[io][hose][dev] = DWLPX_IMASK_DFLT;
}
}
}
}
#define IH_MAKE(vec, dev, pin) \
((vec) | ((dev) << 16) | ((pin) << 24))
#define IH_VEC(ih) ((ih) & 0xffff)
#define IH_DEV(ih) (((ih) >> 16) & 0xff)
#define IH_PIN(ih) (((ih) >> 24) & 0xff)
int
dec_kn8ae_intr_map(pa, ihp)
struct pci_attach_args *pa;
pci_intr_handle_t *ihp;
{
pcitag_t bustag = pa->pa_intrtag;
int buspin = pa->pa_intrpin;
pci_chipset_tag_t pc = pa->pa_pc;
int device;
u_long vec;
if (buspin == 0) {
/* No IRQ used. */
return 1;
}
if (buspin > 4) {
printf("dec_kn8ae_intr_map: bad interrupt pin %d\n", buspin);
return 1;
}
pci_decompose_tag(pc, bustag, NULL, &device, NULL);
vec = scb_alloc(kn8ae_spurious, NULL);
if (vec == SCB_ALLOC_FAILED) {
printf("dec_kn8ae_intr_map: no vector available for "
"device %d pin %d\n", device, buspin);
return 1;
}
*ihp = IH_MAKE(vec, device, buspin);
return (0);
}
const char *
dec_kn8ae_intr_string(ccv, ih)
void *ccv;
pci_intr_handle_t ih;
{
static char irqstr[64];
sprintf(irqstr, "vector 0x%lx", IH_VEC(ih));
return (irqstr);
}
const struct evcnt *
dec_kn8ae_intr_evcnt(ccv, ih)
void *ccv;
pci_intr_handle_t ih;
{
/* XXX for now, no evcnt parent reported */
return (NULL);
}
void *
dec_kn8ae_intr_establish(ccv, ih, level, func, arg)
void *ccv;
pci_intr_handle_t ih;
int level;
int (*func) __P((void *));
void *arg;
{
struct dwlpx_config *ccp = ccv;
void *cookie;
struct scbvec *scb;
u_long vec;
int pin, device, hpc;
device = IH_DEV(ih);
pin = IH_PIN(ih);
vec = IH_VEC(ih);
scb = &scb_iovectab[SCB_VECTOIDX(vec - SCB_IOVECBASE)];
if (scb->scb_func != kn8ae_spurious) {
printf("dec_kn8ae_intr_establish: vector 0x%lx not mapped\n",
vec);
return (NULL);
}
/*
* NOTE: The PCIA hardware doesn't support interrupt sharing,
* so we don't have to worry about it (in theory, at least).
*/
scb->scb_arg = arg;
alpha_mb();
scb->scb_func = (void (*)(void *, u_long))func;
alpha_mb();
if (device < 4) {
hpc = 0;
} else if (device < 8) {
device -= 4;
hpc = 1;
} else {
device -= 8;
hpc = 2;
}
REGVAL(PCIA_DEVVEC(hpc, device, pin) + ccp->cc_sysbase) = vec;
kn8ae_enadis_intr(ccp, ih, 1);
cookie = (void *) ih;
return (cookie);
}
void
dec_kn8ae_intr_disestablish(ccv, cookie)
void *ccv, *cookie;
{
struct dwlpx_config *ccp = ccv;
pci_intr_handle_t ih = (u_long) cookie;
struct scbvec *scb;
u_long vec;
vec = IH_VEC(ih);
scb = &scb_iovectab[SCB_VECTOIDX(vec - SCB_IOVECBASE)];
kn8ae_enadis_intr(ccp, ih, 0);
scb_free(vec);
}
void
kn8ae_spurious(void *arg, u_long vec)
{
printf("Spurious interrupt on temporary interrupt vector 0x%lx\n", vec);
}
void
kn8ae_enadis_intr(ccp, irq, onoff)
struct dwlpx_config *ccp;
pci_intr_handle_t irq;
int onoff;
{
struct dwlpx_softc *sc = ccp->cc_sc;
unsigned long paddr;
u_int32_t val;
int ionode, hose, device, hpc, busp, s;
ionode = sc->dwlpx_node - 4;
hose = sc->dwlpx_hosenum;
device = IH_DEV(irq);
busp = (1 << (IH_PIN(irq) - 1));
paddr = (1LL << 39);
paddr |= (unsigned long) ionode << 36;
paddr |= (unsigned long) hose << 34;
if (device < 4) {
hpc = 0;
} else if (device < 8) {
hpc = 1;
device -= 4;
} else {
hpc = 2;
device -= 8;
}
busp <<= (device << 2);
val = imaskcache[ionode][hose][hpc];
if (onoff)
val |= busp;
else
val &= ~busp;
imaskcache[ionode][hose][hpc] = val;
#if 0
printf("kn8ae_%s_intr: irq %lx imsk 0x%x hpc %d TLSB node %d hose %d\n",
onoff? "enable" : "disable", irq, val, hpc, ionode + 4, hose);
#endif
s = splhigh();
REGVAL(PCIA_IMASK(hpc) + paddr) = val;
alpha_mb();
(void) splx(s);
}