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/* $NetBSD: lasi.c,v 1.5 2021/08/07 16:18:55 thorpej Exp $ */
/* $OpenBSD: lasi.c,v 1.4 2001/06/09 03:57:19 mickey Exp $ */
/*
* Copyright (c) 1998-2003 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lasi.c,v 1.5 2021/08/07 16:18:55 thorpej Exp $");
#undef LASIDEBUG
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/bus.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <hppa/dev/cpudevs.h>
#include <hppa/gsc/gscbusvar.h>
struct lasi_hwr {
uint32_t lasi_power;
#define LASI_BLINK 0x01
#define LASI_OFF 0x02
uint32_t lasi_error;
uint32_t lasi_version;
uint32_t lasi_reset;
uint32_t lasi_arbmask;
};
struct lasi_trs {
uint32_t lasi_irr; /* int requset register */
uint32_t lasi_imr; /* int mask register */
uint32_t lasi_ipr; /* int pending register */
uint32_t lasi_icr; /* int command? register */
uint32_t lasi_iar; /* int acquire? register */
};
#define LASI_BANK_SZ 0x200000
#define LASI_REG_INT 0x100000
#define LASI_REG_MISC 0x10c000
struct lasi_softc {
device_t sc_dev;
struct hppa_interrupt_register sc_ir;
struct lasi_hwr volatile *sc_hw;
struct lasi_trs volatile *sc_trs;
};
int lasimatch(device_t, cfdata_t, void *);
void lasiattach(device_t, device_t, void *);
CFATTACH_DECL_NEW(lasi, sizeof(struct lasi_softc),
lasimatch, lasiattach, NULL, NULL);
extern struct cfdriver lasi_cd;
void lasi_cold_hook(int);
/*
* Before a module is matched, this fixes up its gsc_attach_args.
*/
static void lasi_fix_args(void *, struct gsc_attach_args *);
static void
lasi_fix_args(void *_sc, struct gsc_attach_args *ga)
{
struct lasi_softc *sc = _sc;
hppa_hpa_t module_offset;
/*
* Determine this module's interrupt bit.
*/
module_offset = ga->ga_hpa - (hppa_hpa_t) sc->sc_trs;
ga->ga_irq = HPPACF_IRQ_UNDEF;
#define LASI_IRQ(off, irq) if (module_offset == off) ga->ga_irq = irq
LASI_IRQ(0x2000, 7); /* lpt */
LASI_IRQ(0x4000, 13); /* harmony */
LASI_IRQ(0x4040, 16); /* harmony telephone0 */
LASI_IRQ(0x4060, 17); /* harmony telephone1 */
LASI_IRQ(0x5000, 5); /* com */
LASI_IRQ(0x6000, 9); /* osiop */
LASI_IRQ(0x7000, 8); /* ie */
LASI_IRQ(0x8000, 26); /* pckbc */
LASI_IRQ(0xa000, 20); /* fdc */
#undef LASI_IRQ
/*
* If this is the Ethernet adapter, get its Ethernet address.
*/
if (module_offset == 0x7000) {
pdcproc_lan_station_id(ga->ga_ether_address,
sizeof(ga->ga_ether_address), ga->ga_hpa);
}
}
int
lasimatch(device_t parent, cfdata_t cf, void *aux)
{
struct confargs *ca = aux;
if (ca->ca_type.iodc_type != HPPA_TYPE_BHA ||
ca->ca_type.iodc_sv_model != HPPA_BHA_LASI)
return 0;
/*
* Forcibly mask the HPA down to the start of the LASI
* chip address space.
*/
ca->ca_hpa &= ~(LASI_BANK_SZ - 1);
return 1;
}
void
lasiattach(device_t parent, device_t self, void *aux)
{
struct confargs *ca = aux;
struct lasi_softc *sc = device_private(self);
struct gsc_attach_args ga;
struct cpu_info *ci = &cpus[0];
bus_space_handle_t ioh;
int s;
sc->sc_dev = self;
/*
* Map the LASI interrupt registers.
*/
if (bus_space_map(ca->ca_iot, ca->ca_hpa + LASI_REG_INT,
sizeof(struct lasi_trs), 0, &ioh)) {
aprint_error(": can't map interrupt registers\n");
return;
}
sc->sc_trs = (struct lasi_trs *)ioh;
/*
* Map the LASI miscellaneous registers.
*/
if (bus_space_map(ca->ca_iot, ca->ca_hpa + LASI_REG_MISC,
sizeof(struct lasi_hwr), 0, &ioh)) {
aprint_error(": can't map misc registers\n");
return;
}
sc->sc_hw = (struct lasi_hwr *)ioh;
/* XXX should we reset the chip here? */
aprint_normal(": rev %d.%d\n", (sc->sc_hw->lasi_version & 0xf0) >> 4,
sc->sc_hw->lasi_version & 0xf);
ca->ca_irq = hppa_intr_allocate_bit(&ci->ci_ir, ca->ca_irq);
if (ca->ca_irq == HPPACF_IRQ_UNDEF) {
aprint_error(": can't allocate interrupt\n");
return;
}
/* interrupts guts */
s = splhigh();
sc->sc_trs->lasi_iar = ci->ci_hpa | (31 - ca->ca_irq);
sc->sc_trs->lasi_icr = 0;
sc->sc_trs->lasi_imr = 0;
(void)sc->sc_trs->lasi_irr;
/* Establish the interrupt register. */
hppa_interrupt_register_establish(ci, &sc->sc_ir);
sc->sc_ir.ir_name = device_xname(self);
sc->sc_ir.ir_mask = &sc->sc_trs->lasi_imr;
sc->sc_ir.ir_req = &sc->sc_trs->lasi_irr;
splx(s);
/* Attach the GSC bus. */
ga.ga_ca = *ca; /* clone from us */
if (strcmp(device_xname(parent), "mainbus0") == 0) {
ga.ga_dp.dp_bc[0] = ga.ga_dp.dp_bc[1];
ga.ga_dp.dp_bc[1] = ga.ga_dp.dp_bc[2];
ga.ga_dp.dp_bc[2] = ga.ga_dp.dp_bc[3];
ga.ga_dp.dp_bc[3] = ga.ga_dp.dp_bc[4];
ga.ga_dp.dp_bc[4] = ga.ga_dp.dp_bc[5];
ga.ga_dp.dp_bc[5] = ga.ga_dp.dp_mod;
ga.ga_dp.dp_mod = 0;
}
ga.ga_name = "gsc";
ga.ga_ir = &sc->sc_ir;
ga.ga_fix_args = lasi_fix_args;
ga.ga_fix_args_cookie = sc;
ga.ga_scsi_target = 7; /* XXX */
config_found(self, &ga, gscprint, CFARGS_NONE);
/* could be already set by power(4) */
if (!cold_hook)
cold_hook = lasi_cold_hook;
}
void
lasi_cold_hook(int on)
{
struct lasi_softc *sc = device_private(lasi_cd.cd_devs[0]);
if (!sc)
return;
switch (on) {
case HPPA_COLD_COLD:
sc->sc_hw->lasi_power = LASI_BLINK;
break;
case HPPA_COLD_HOT:
sc->sc_hw->lasi_power = 0;
break;
case HPPA_COLD_OFF:
sc->sc_hw->lasi_power = LASI_OFF;
break;
}
}
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