arch/sh/drivers/pci/fixups-snapgear.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/sh/drivers/pci/ops-snapgear.c
   4  *
   5  * Author:  David McCullough <davidm@snapgear.com>
   6  *
   7  * Ported to new API by Paul Mundt <lethal@linux-sh.org>
   8  *
   9  * Highly leveraged from pci-bigsur.c, written by Dustin McIntire.
  10  *
  11  * PCI initialization for the SnapGear boards
  12  */
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/init.h>
  16 #include <linux/pci.h>
  17 #include <linux/sh_intc.h>
  18 #include "pci-sh4.h"
  19
  20 int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
  21 {
  22         int irq = -1;
  23
  24         switch (slot) {
  25         case 8:  /* the PCI bridge */ break;
  26         case 11: irq = evt2irq(0x300); break; /* USB    */
  27         case 12: irq = evt2irq(0x360); break; /* PCMCIA */
  28         case 13: irq = evt2irq(0x2a0); break; /* eth0   */
  29         case 14: irq = evt2irq(0x300); break; /* eth1   */
  30         case 15: irq = evt2irq(0x360); break; /* safenet (unused) */
  31         }
  32
  33         printk("PCI: Mapping SnapGear IRQ for slot %d, pin %c to irq %d\n",
  34                slot, pin - 1 + 'A', irq);
  35
  36         return irq;
  37 }