/*      $NetBSD: cp3100_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill Exp $  */

/*
* Copyright 2006 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Steve C. Woodford for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/

/*
* CP3100 PCI interrupt support.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cp3100_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/autoconf.h>
#include <sys/bus.h>

#include <evbarm/iq80321/iq80321reg.h>
#include <evbarm/iq80321/iq80321var.h>

#include <arm/xscale/i80321reg.h>
#include <arm/xscale/i80321var.h>

#include <dev/pci/pcidevs.h>
#include <dev/pci/ppbreg.h>

int     iq80321_pci_intr_map(const struct pci_attach_args *,
           pci_intr_handle_t *);
const char *iq80321_pci_intr_string(void *, pci_intr_handle_t, char *, size_t);
const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t);
void    *iq80321_pci_intr_establish(void *, pci_intr_handle_t,
           int, int (*func)(void *), void *, const char *);
void    iq80321_pci_intr_disestablish(void *, void *);

void
iq80321_pci_init(pci_chipset_tag_t pc, void *cookie)
{

       pc->pc_intr_v = cookie;         /* the i80321 softc */
       pc->pc_intr_map = iq80321_pci_intr_map;
       pc->pc_intr_string = iq80321_pci_intr_string;
       pc->pc_intr_evcnt = iq80321_pci_intr_evcnt;
       pc->pc_intr_establish = iq80321_pci_intr_establish;
       pc->pc_intr_disestablish = iq80321_pci_intr_disestablish;
}

int
iq80321_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
       struct i80321_softc *sc = pa->pa_pc->pc_intr_v;
       int b, d, f;
       uint32_t busno;

       busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
       busno = PCIXSR_BUSNO(busno);
       if (busno == 0xff)
               busno = 0;

       pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);

       /* No mappings for devices not on our bus. */
       if (b != busno)
               goto no_mapping;

       switch (d) {
       case 0:                 /* i82546EB Dual GigE */
               /*
                * This is a dual-function chip which uses INTA and INTB,
                * connected to XINT0 and XINT1 respectively.
                */
               if (f != 0 && f != 1)
                       goto no_mapping;
               *ihp = ICU_INT_XINT(f);
               return (0);

       case 1:                 /* i31244 S-ATA Interface */
               *ihp = ICU_INT_XINT(2);
               return (0);

       case 2:                 /* Symbios Logic 53c1010 SCSI Controllers */
       case 3:
               /*
                * Both controllers share a single pin
                */
               *ihp = ICU_INT_XINT(3);
               return (0);

       default:
no_mapping:
               printf("iq80321_pci_intr_map: no mapping for %d/%d/%d/%c\n",
                   pa->pa_bus, pa->pa_device, pa->pa_function,
                   '@' + pa->pa_intrpin);
               return (1);
       }

       return (0);
}

const char *
iq80321_pci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len)
{

       strlcpy(buf, i80321_irqnames[ih], len);
       return buf;
}

const struct evcnt *
iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
{

       /* XXX For now. */
       return (NULL);
}

void *
iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
   int (*func)(void *), void *arg, const char *xname)
{

       return (i80321_intr_establish(ih, ipl, func, arg));
}

void
iq80321_pci_intr_disestablish(void *v, void *cookie)
{

       i80321_intr_disestablish(cookie);
}