/*      $NetBSD: hdlg_pci.c,v 1.6 2025/07/03 19:09:48 andvar Exp $      */

/*
* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hdlg_pci.c,v 1.6 2025/07/03 19:09:48 andvar Exp $");

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

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

#include <evbarm/hdl_g/hdlgreg.h>
#include <evbarm/hdl_g/hdlgvar.h>

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

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

int     hdlg_pci_intr_map(const struct pci_attach_args *, pci_intr_handle_t *);
const char *hdlg_pci_intr_string(void *, pci_intr_handle_t, char *, size_t);
const struct evcnt *hdlg_pci_intr_evcnt(void *, pci_intr_handle_t);
void    *hdlg_pci_intr_establish(void *, pci_intr_handle_t,
           int, int (*func)(void *), void *, const char *);
void    hdlg_pci_intr_disestablish(void *, void *);

void
hdlg_pci_init(pci_chipset_tag_t pc, void *cookie)
{

       pc->pc_intr_v = cookie;         /* the i80321 softc */
       pc->pc_intr_map = hdlg_pci_intr_map;
       pc->pc_intr_string = hdlg_pci_intr_string;
       pc->pc_intr_evcnt = hdlg_pci_intr_evcnt;
       pc->pc_intr_establish = hdlg_pci_intr_establish;
       pc->pc_intr_disestablish = hdlg_pci_intr_disestablish;
}

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

       /*
        * GigaLANDISK's interrupts are routed like so:
        *
        *      XINT0   Intel i82541PI Gig-E
        *
        *      XINT1   ACARD ATP875-A
        *
        *      XINT2   NEC ehci/ohci
        *
        *      XINT3   UART
        */

       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 1:                 /* i82541PI Gig-E */
               if (pa->pa_intrpin == 1) {
                       *ihp = ICU_INT_XINT(0);
                       return 0;
               }
               goto no_mapping;

       case 2:                 /* ATP875-A */
               if (pa->pa_intrpin == 1) {
                       *ihp = ICU_INT_XINT(1);
                       return 0;
               }
               goto no_mapping;

       case 3:                 /* ehci/ohci */
               switch (pa->pa_intrpin) {
               case 1: /* ohci */
               case 2: /* ohci */
               case 3: /* ehci */
                       *ihp = ICU_INT_XINT(2);
                       return 0;
               }
               goto no_mapping;

       default:
no_mapping:
               printf("hdlg_pci_intr_map: no mapping for %d/%d/%d\n",
                   pa->pa_bus, pa->pa_device, pa->pa_function);
               return 1;
       }

       return 0;
}

const char *
hdlg_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 *
hdlg_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
{

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

void *
hdlg_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
hdlg_pci_intr_disestablish(void *v, void *cookie)
{

       i80321_intr_disestablish(cookie);
}