/* * linux/arch/mips/pci/pci-tx4939.c * * Based on linux/arch/mips/txx9/rbtx4939/setup.c, * and RBTX49xx patch from CELF patch archive. * * Copyright 2001, 2003-2005 MontaVista Software Inc. * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/init.h> #include <linux/pci.h> #include <linux/kernel.h> #include <linux/interrupt.h> #include <asm/txx9/generic.h> #include <asm/txx9/tx4939.h> int __init tx4939_report_pciclk(void) { int pciclk = 0; pr_info("PCIC --%s PCICLK:", (__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCI66) ? " PCI66" : ""); if (__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_PCICLKEN_ALL) { pciclk = txx9_master_clock * 20 / 6; if (!(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCI66)) pciclk /= 2; printk(KERN_CONT "Internal(%u.%uMHz)", (pciclk + 50000) / 1000000, ((pciclk + 50000) / 100000) % 10); } else { printk(KERN_CONT "External"); pciclk = -1; } printk(KERN_CONT "\n"); return pciclk; } void __init tx4939_report_pci1clk(void) { unsigned int pciclk = txx9_master_clock * 20 / 6; pr_info("PCIC1 -- PCICLK:%u.%uMHz\n", (pciclk + 50000) / 1000000, ((pciclk + 50000) / 100000) % 10); } int __init tx4939_pcic1_map_irq(const struct pci_dev *dev, u8 slot) { if (get_tx4927_pcicptr(dev->bus->sysdata) == tx4939_pcic1ptr) { switch (slot) { case TX4927_PCIC_IDSEL_AD_TO_SLOT(31): if (__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ET0MODE) return TXX9_IRQ_BASE + TX4939_IR_ETH(0); break; case TX4927_PCIC_IDSEL_AD_TO_SLOT(30): if (__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ET1MODE) return TXX9_IRQ_BASE + TX4939_IR_ETH(1); break; } return 0; } return -1; } int __init tx4939_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { int irq = tx4939_pcic1_map_irq(dev, slot); if (irq >= 0) return irq; irq = pin; /* IRQ rotation */ irq--; /* 0-3 */ irq = (irq + 33 - slot) % 4; irq++; /* 1-4 */ switch (irq) { case 1: irq = TXX9_IRQ_BASE + TX4939_IR_INTA; break; case 2: irq = TXX9_IRQ_BASE + TX4939_IR_INTB; break; case 3: irq = TXX9_IRQ_BASE + TX4939_IR_INTC; break; case 4: irq = TXX9_IRQ_BASE + TX4939_IR_INTD; break; } return irq; } void __init tx4939_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4939_IR_PCIERR, tx4927_pcierr_interrupt, IRQF_DISABLED, "PCI error", (void *)TX4939_PCIC_REG)) pr_warning("Failed to request irq for PCIERR\n"); }