/* $NetBSD: pci_alphabook1.c,v 1.20 2021/06/25 13:38:21 thorpej Exp $ */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 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.
*/

/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Authors: Jeffrey Hsu and Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
*  Software Distribution Coordinator  or  [email protected]
*  School of Computer Science
*  Carnegie Mellon University
*  Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/

#include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */

__KERNEL_RCSID(0, "$NetBSD: pci_alphabook1.c,v 1.20 2021/06/25 13:38:21 thorpej Exp $");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/device.h>

#include <machine/intr.h>
#include <machine/rpb.h>

#include <dev/isa/isavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>

#include <alpha/pci/lcavar.h>

#include <alpha/pci/siovar.h>
#include <alpha/pci/sioreg.h>

#include "sio.h"

static int      dec_alphabook1_intr_map(const struct pci_attach_args *,
                   pci_intr_handle_t *);

static void
pci_alphabook1_pickintr(void *core, bus_space_tag_t iot, bus_space_tag_t memt,
   pci_chipset_tag_t pc)
{

       pc->pc_intr_v = core;
       pc->pc_intr_map = dec_alphabook1_intr_map;
       pc->pc_intr_string = sio_pci_intr_string;
       pc->pc_intr_evcnt = sio_pci_intr_evcnt;
       pc->pc_intr_establish = sio_pci_intr_establish;
       pc->pc_intr_disestablish = sio_pci_intr_disestablish;

       /* Not supported on AlphaBook. */
       pc->pc_pciide_compat_intr_establish = NULL;

#if NSIO
       sio_intr_setup(pc, iot);
#else
       panic("pci_alphabook1_pickintr: no I/O interrupt handler (no sio)");
#endif
}
ALPHA_PCI_INTR_INIT(ST_ALPHABOOK1, pci_alphabook1_pickintr)

int
dec_alphabook1_intr_map(const 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, irq;

       if (buspin == 0) {
               /* No IRQ used. */
               return 1;
       }
       if (buspin < 0 || buspin > 4) {
               printf("dec_alphabook1_intr_map: bad interrupt pin %d\n",
                   buspin);
               return 1;
       }

       pci_decompose_tag(pc, bustag, NULL, &device, NULL);

       /*
        * There is only one interrupting PCI device on the AlphaBook: an
        * NCR SCSI at device 6.  Devices 7 and 8 are the SIO and a
        * Cirrus PD6729 PCMCIA controller.  There are no option slots
        * available.
        *
        * NOTE!  Apparently, there was a later AlphaBook which uses
        * a different interrupt scheme, and has a built-in Tulip Ethernet
        * interface!  We do not handle that here!
        */

       switch (device) {
       case 6:                                 /* NCR SCSI */
               irq = 14;
               break;

       default:
               printf("dec_alphabook1_intr_map: weird device number %d\n",
                   device);
               return 1;
       }

       alpha_pci_intr_handle_init(ihp, irq, 0);
       return (0);
}