2 * Toshiba rbtx4938 pci routines
3 * Copyright (C) 2000-2001 Toshiba Corporation
5 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
6 * terms of the GNU General Public License version 2. This program is
7 * licensed "as is" without any warranty of any kind, whether express
10 * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
12 #include <linux/types.h>
13 #include <linux/pci.h>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
17 #include <asm/tx4938/rbtx4938.h>
19 extern struct pci_controller tx4938_pci_controller[];
21 static int pci_get_irq(const struct pci_dev *dev, int pin)
24 u8 slot = PCI_SLOT(dev->devfn);
25 struct pci_controller *controller = (struct pci_controller *)dev->sysdata;
27 if (controller == &tx4938_pci_controller[1]) {
30 case TX4938_PCIC_IDSEL_AD_TO_SLOT(31):
31 if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH0_SEL)
32 return RBTX4938_IRQ_IRC + TX4938_IR_ETH0;
34 case TX4938_PCIC_IDSEL_AD_TO_SLOT(30):
35 if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH1_SEL)
36 return RBTX4938_IRQ_IRC + TX4938_IR_ETH1;
44 if (dev->bus->parent == NULL &&
45 (slot == TX4938_PCIC_IDSEL_AD_TO_SLOT(23))) {
46 /* PCI CardSlot (IDSEL=A23) */
47 /* PCIA => PCIA (IDSEL=A23) */
48 irq = (irq + 0 + slot) % 4;
51 irq = (irq + 33 - slot) % 4;
57 irq = RBTX4938_IRQ_IOC_PCIA;
60 irq = RBTX4938_IRQ_IOC_PCIB;
63 irq = RBTX4938_IRQ_IOC_PCIC;
66 irq = RBTX4938_IRQ_IOC_PCID;
72 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
74 unsigned char irq = 0;
76 irq = pci_get_irq(dev, pin);
78 printk(KERN_INFO "PCI: 0x%02x:0x%02x(0x%02x,0x%02x) IRQ=%d\n",
79 dev->bus->number, dev->devfn, PCI_SLOT(dev->devfn),
80 PCI_FUNC(dev->devfn), irq);
86 * Do platform specific device initialization at pci_enable_device() time
88 int pcibios_plat_dev_init(struct pci_dev *dev)