/* * Toshiba rbtx4938 pci routines * Copyright (C) 2000-2001 Toshiba Corporation * * 2003-2005 (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. * * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) */ #include <linux/types.h> #include <asm/txx9/pci.h> #include <asm/txx9/rbtx4938.h> int rbtx4938_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { int irq = tx4938_pcic1_map_irq(dev, slot); if (irq >= 0) return irq; irq = pin; /* IRQ rotation */ irq--; /* 0-3 */ if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) { /* PCI CardSlot (IDSEL=A23) */ /* PCIA => PCIA (IDSEL=A23) */ irq = (irq + 0 + slot) % 4; } else { /* PCI Backplane */ if (txx9_pci_option & TXX9_PCI_OPT_PICMG) irq = (irq + 33 - slot) % 4; else irq = (irq + 3 + slot) % 4; } irq++; /* 1-4 */ switch (irq) { case 1: irq = RBTX4938_IRQ_IOC_PCIA; break; case 2: irq = RBTX4938_IRQ_IOC_PCIB; break; case 3: irq = RBTX4938_IRQ_IOC_PCIC; break; case 4: irq = RBTX4938_IRQ_IOC_PCID; break; } return irq; }