/*      $NetBSD: pci_machdep.c,v 1.10 2016/10/19 00:08:41 nonaka Exp $  */

/*
* Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
* Copyright (c) 1994 Charles M. Hannum.  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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* 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.
*/

/*
* Machine-specific functions for PCI autoconfiguration.
*
* On PCs, there are two methods of generating PCI configuration cycles.
* We try to detect the appropriate mechanism for this machine and set
* up a few function pointers to access the correct method directly.
*/

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

#include <uvm/uvm_extern.h>

#define _POWERPC_BUS_DMA_PRIVATE
#include <sys/bus.h>
#include <machine/intr.h>

#include <dev/isa/isavar.h>

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

void
ibmnws_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc)
{

       pc->pc_conf_v = (void *)pc;

       pc->pc_attach_hook = genppc_pci_indirect_attach_hook;
       pc->pc_bus_maxdevs = ibmnws_pci_bus_maxdevs;
       pc->pc_make_tag = genppc_pci_indirect_make_tag;
       pc->pc_conf_read = genppc_pci_indirect_conf_read;
       pc->pc_conf_write = genppc_pci_indirect_conf_write;

       pc->pc_intr_v = (void *)pc;

       pc->pc_intr_map = genppc_pci_intr_map;
       pc->pc_intr_string = genppc_pci_intr_string;
       pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
       pc->pc_intr_establish = genppc_pci_intr_establish;
       pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
       pc->pc_intr_setattr = genppc_pci_intr_setattr;
       pc->pc_intr_type = genppc_pci_intr_type;
       pc->pc_intr_alloc = genppc_pci_intr_alloc;
       pc->pc_intr_release = genppc_pci_intr_release;
       pc->pc_intx_alloc = genppc_pci_intx_alloc;

       pc->pc_msi_v = (void *)pc;
       genppc_pci_chipset_msi_init(pc);

       pc->pc_msix_v = (void *)pc;
       genppc_pci_chipset_msix_init(pc);

       pc->pc_conf_interrupt = genppc_pci_conf_interrupt;
       pc->pc_decompose_tag = genppc_pci_indirect_decompose_tag;
       pc->pc_conf_hook = ibmnws_pci_conf_hook;

       pc->pc_addr = mapiodev(PCI_MODE1_ADDRESS_REG, 4, false);
       pc->pc_data = mapiodev(PCI_MODE1_DATA_REG, 4, false);
       pc->pc_bus = 0;
       pc->pc_node = 0;
       pc->pc_memt = 0;
       pc->pc_iot = 0;
}

int
ibmnws_pci_bus_maxdevs(void *v, int busno)
{

       /*
        * Bus number is irrelevant.  Configuration Mechanism 1 is in
        * use, can have devices 0-32 (i.e. the `normal' range).
        */
       return (32);
}

int
ibmnws_pci_conf_hook(void *v, int bus, int dev, int func, pcireg_t id)
{

       /*
        * The P9100 board found in some IBM machines cannot be
        * over-configured.
        */
       if (PCI_VENDOR(id) == PCI_VENDOR_WEITEK &&
           PCI_PRODUCT(id) == PCI_PRODUCT_WEITEK_P9100)
               return 0;

       return (PCI_CONF_DEFAULT);
}