/*      $NetBSD: pci_machdep.c,v 1.6 2018/03/01 23:01:19 scole Exp $    */
/*
* Copyright (c) 2009, 2010 KIYOHARA Takashi
* 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: pci_machdep.c,v 1.6 2018/03/01 23:01:19 scole Exp $");

#include <machine/bus.h>
#include <machine/sal.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>


void
pci_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba)
{

       /* Nothing */
}

int
pci_bus_maxdevs(pci_chipset_tag_t pc, int busno)
{

        return 32;     /* 32 device/bus */
}

pcitag_t
pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
{

#if DIAGNOSTIC
       if (bus >= 256 || device >= 32 || function >= 8)
               panic("%s: bad request", __func__);
#endif

       return (bus << 16) | (device << 11) | (function << 8);
}

void
pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp)
{

       if (bp != NULL)
               *bp = (tag >> 16) & 0xff;
       if (dp != NULL)
               *dp = (tag >> 11) & 0x1f;
       if (fp != NULL)
               *fp = (tag >> 8) & 0x07;
}

pcireg_t
pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
{
       struct ia64_sal_result res;

       if ((unsigned int)reg >= PCI_CONF_SIZE)
               return -1;

       res = ia64_sal_entry(SAL_PCI_CONFIG_READ,
           tag | reg, sizeof(pcireg_t), 0, 0, 0, 0, 0);
       if (res.sal_status < 0)
               return -1;
       else
               return res.sal_result[0];
}

void
pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val)
{
       struct ia64_sal_result res;

       if ((unsigned int)reg >= PCI_CONF_SIZE)
               return;

       res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE,
           tag | reg, sizeof(pcireg_t), val, 0, 0, 0, 0);
       if (res.sal_status < 0)
               printf("pci configuration write failed\n");
}