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pal4_pci.c

/*
 * PCI support for SBS Palomar IV
 *
 * Author: Dan Cox
 *
 * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
 * the terms of the GNU General Public License version 2.  This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>

#include <asm/byteorder.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/pci-bridge.h>
#include <asm/uaccess.h>

#include <syslib/cpc700.h>

#include "pal4.h"

/* not much to this.... */
static inline int __init
pal4_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
      if (idsel == 9)
            return PAL4_ETH;
      else
            return PAL4_INTA + (idsel - 3);
}

void __init
pal4_find_bridges(void)
{
      struct pci_controller *hose;

      hose = pcibios_alloc_controller();
      if (!hose)
            return;

      hose->first_busno = 0;
      hose->last_busno = 0xff;
      hose->pci_mem_offset = 0;

      /* Could snatch these from the CPC700.... */
      pci_init_resource(&hose->io_resource,
                    0x0,
                    0x03ffffff,
                    IORESOURCE_IO,
                    "PCI host bridge");

      pci_init_resource(&hose->mem_resources[0],
                    0x90000000,
                    0x9fffffff,
                    IORESOURCE_MEM,
                    "PCI host bridge");

      hose->io_space.start = 0x00800000;
      hose->io_space.end = 0x03ffffff;
      hose->mem_space.start = 0x90000000;
      hose->mem_space.end = 0x9fffffff;
      hose->io_base_virt = (void *) 0xf8000000;

      setup_indirect_pci(hose, CPC700_PCI_CONFIG_ADDR,
                     CPC700_PCI_CONFIG_DATA);

      hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);

      ppc_md.pci_swizzle = common_swizzle;
      ppc_md.pci_map_irq = pal4_map_irq;
}

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