/* $NetBSD: pckbc_isa.c,v 1.27 2022/09/25 17:11:48 thorpej Exp $ */

/*
* Copyright (c) 1998
*      Matthias Drochner.  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 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>
__KERNEL_RCSID(0, "$NetBSD: pckbc_isa.c,v 1.27 2022/09/25 17:11:48 thorpej Exp $");

#include "opt_pckbc.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <sys/kmem.h>
#include <sys/errno.h>
#include <sys/queue.h>

#include <sys/bus.h>

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>

#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h>

int     pckbc_isa_match(device_t, cfdata_t, void *);
void    pckbc_isa_attach(device_t, device_t, void *);

struct pckbc_isa_softc {
       struct pckbc_softc sc_pckbc;

       isa_chipset_tag_t sc_ic;
       int sc_irq[PCKBC_NSLOTS];
};

CFATTACH_DECL_NEW(pckbc_isa, sizeof(struct pckbc_isa_softc),
   pckbc_isa_match, pckbc_isa_attach, NULL, NULL);

void    pckbc_isa_intr_establish(struct pckbc_softc *, pckbc_slot_t);

int
pckbc_isa_match(device_t parent, cfdata_t match, void *aux)
{
       struct isa_attach_args *ia = aux;
       bus_space_tag_t iot = ia->ia_iot;
       bus_space_handle_t ioh_d, ioh_c;
       int res, ok = 1;

       if (ISA_DIRECT_CONFIG(ia))
               return (0);

       /* If values are hardwired to something that they can't be, punt. */
       if (ia->ia_nio < 1 ||
           (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT &&
            ia->ia_io[0].ir_addr != IO_KBD))
               return (0);

       if (ia->ia_niomem > 0 &&
           (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM))
               return (0);

       if (ia->ia_nirq < 1 ||
           (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
            ia->ia_irq[0].ir_irq != 1 /*XXX*/))
               return (0);

       if (ia->ia_ndrq > 0 &&
           (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ))
               return (0);

       if (pckbc_is_console(iot, IO_KBD) == 0) {
               struct pckbc_internal t;

               if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d))
                       return (0);
               if (bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c)) {
                       bus_space_unmap(iot, ioh_d, 1);
                       return (0);
               }

               memset(&t, 0, sizeof(t));
               t.t_iot = iot;
               t.t_ioh_d = ioh_d;
               t.t_ioh_c = ioh_c;

               /* flush KBC */
               (void) pckbc_poll_data1(&t, PCKBC_KBD_SLOT);

               /* KBC selftest */
               if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0) {
                       ok = 0;
                       goto out;
               }
               res = pckbc_poll_data1(&t, PCKBC_KBD_SLOT);
#ifndef PCKBCNOTEST
               if (res != 0x55) {
#ifdef PCKBCDEBUG
                       aprint_verbose("kbc selftest: %x\n", res);
#endif
                       ok = 0;
               }
#else
               __USE(res);
#endif /* PCKBCNOTEST */
out:
               bus_space_unmap(iot, ioh_d, 1);
               bus_space_unmap(iot, ioh_c, 1);
       }

       if (ok) {
               ia->ia_io[0].ir_addr = IO_KBD;
               ia->ia_io[0].ir_size = 5;
               ia->ia_nio = 1;

               ia->ia_niomem = 0;
               ia->ia_nirq = 0;
               ia->ia_ndrq = 0;
       }
       return (ok);
}

void
pckbc_isa_attach(device_t parent, device_t self, void *aux)
{
       struct pckbc_isa_softc *isc = device_private(self);
       struct pckbc_softc *sc = &isc->sc_pckbc;
       struct isa_attach_args *ia = aux;
       struct pckbc_internal *t;
       bus_space_tag_t iot;
       bus_space_handle_t ioh_d, ioh_c;

       sc->sc_dv = self;
       isc->sc_ic = ia->ia_ic;
       iot = ia->ia_iot;

       switch (ia->ia_nirq) {
       case 1:
               /* Both channels use the same IRQ. */
               isc->sc_irq[PCKBC_KBD_SLOT] =
                   isc->sc_irq[PCKBC_AUX_SLOT] = ia->ia_irq[0].ir_irq;
               break;

       case 2:
               /* First IRQ is kbd, second IRQ is aux port. */
               isc->sc_irq[PCKBC_KBD_SLOT] = ia->ia_irq[0].ir_irq;
               isc->sc_irq[PCKBC_AUX_SLOT] = ia->ia_irq[1].ir_irq;
               break;

       default:
               /* Set up IRQs for "normal" ISA. */
               isc->sc_irq[PCKBC_KBD_SLOT] = 1;
               isc->sc_irq[PCKBC_AUX_SLOT] = 12;
               break;
       }

       sc->intr_establish = pckbc_isa_intr_establish;

       if (pckbc_is_console(iot, IO_KBD)) {
               t = &pckbc_consdata;
               ioh_d = t->t_ioh_d;
               ioh_c = t->t_ioh_c;
               pckbc_console_attached = 1;
               /* t->t_cmdbyte was initialized by cnattach */
       } else {
               if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d) ||
                   bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c))
                       panic("pckbc_attach: couldn't map");

               t = kmem_zalloc(sizeof(*t), KM_SLEEP);
               t->t_iot = iot;
               t->t_ioh_d = ioh_d;
               t->t_ioh_c = ioh_c;
               t->t_addr = IO_KBD;
               t->t_cmdbyte = KC8_CPU; /* Enable ports */
               callout_init(&t->t_cleanup, 0);
       }

       t->t_sc = sc;
       sc->id = t;

       aprint_normal("\n");

       if (!pmf_device_register(self, NULL, pckbc_resume))
               aprint_error_dev(self, "couldn't establish power handler\n");

       /* Finish off the attach. */
       pckbc_attach(sc);
}

void
pckbc_isa_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
{
       struct pckbc_isa_softc *isc = (void *) sc;
       void *rv;

       rv = isa_intr_establish(isc->sc_ic, isc->sc_irq[slot], IST_EDGE,
           IPL_TTY, pckbcintr, sc);
       if (rv == NULL) {
               aprint_error_dev(sc->sc_dv,
                   "unable to establish interrupt for %s slot\n",
                   pckbc_slot_names[slot]);
       } else {
               aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
                   isc->sc_irq[slot], pckbc_slot_names[slot]);
       }
}

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.