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 
pcibios_map_platform_irq(const struct pci_dev * pdev,u8 slot,u8 pin)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 }
38