10f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones/* 20f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * arch/arm/mach-ixp4xx/avila-pci.c 30f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * 40f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * Gateworks Avila board-level PCI initialization 50f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * 60f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * Author: Michael-Luke Jones <mlj28@cam.ac.uk> 70f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * 80f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * Based on ixdp-pci.c 90f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * Copyright (C) 2002 Intel Corporation. 100f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * Copyright (C) 2003-2004 MontaVista Software, Inc. 110f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * 120f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * Maintainer: Deepak Saxena <dsaxena@plexity.net> 130f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * 140f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * This program is free software; you can redistribute it and/or modify 150f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * it under the terms of the GNU General Public License version 2 as 160f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * published by the Free Software Foundation. 170f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones * 180f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones */ 190f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 200f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <linux/kernel.h> 210f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <linux/pci.h> 220f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <linux/init.h> 230f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <linux/irq.h> 240f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <linux/delay.h> 250f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <asm/mach/pci.h> 260f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <asm/irq.h> 27a09e64fbc0094e3073dbb09c3b4bfe4ab669244bRussell King#include <mach/hardware.h> 280f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones#include <asm/mach-types.h> 290f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 308d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define AVILA_MAX_DEV 4 318d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define LOFT_MAX_DEV 6 328d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define IRQ_LINES 4 33ec66969685ecf04e8a5036369702fa9aec07cc17Krzysztof Hałasa 34ec66969685ecf04e8a5036369702fa9aec07cc17Krzysztof Hałasa/* PCI controller GPIO to IRQ pin mappings */ 358d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define INTA 11 368d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define INTB 10 378d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define INTC 9 388d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa#define INTD 8 39ec66969685ecf04e8a5036369702fa9aec07cc17Krzysztof Hałasa 400f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jonesvoid __init avila_pci_preinit(void) 410f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones{ 426845664a6a7d443f03883db59d10749d38d98b8eThomas Gleixner irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); 436845664a6a7d443f03883db59d10749d38d98b8eThomas Gleixner irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); 446845664a6a7d443f03883db59d10749d38d98b8eThomas Gleixner irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); 456845664a6a7d443f03883db59d10749d38d98b8eThomas Gleixner irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); 460f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones ixp4xx_pci_preinit(); 470f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones} 480f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 49d5341942d784134f2997b3ff82cd63cf71d1f932Ralf Baechlestatic int __init avila_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 500f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones{ 518d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa static int pci_irq_table[IRQ_LINES] = { 528d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa IXP4XX_GPIO_IRQ(INTA), 538d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa IXP4XX_GPIO_IRQ(INTB), 548d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa IXP4XX_GPIO_IRQ(INTC), 558d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa IXP4XX_GPIO_IRQ(INTD) 560f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones }; 570f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 580f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones if (slot >= 1 && 598d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa slot <= (machine_is_loft() ? LOFT_MAX_DEV : AVILA_MAX_DEV) && 608d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa pin >= 1 && pin <= IRQ_LINES) 618d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa return pci_irq_table[(slot + pin - 2) % 4]; 620f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 638d3fdf31dd2066533861bb57ed7df1ae1b1f5fccKrzysztof Hałasa return -1; 640f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones} 650f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 660f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jonesstruct hw_pci avila_pci __initdata = { 670f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones .nr_controllers = 1, 68c23bfc3835173f5229b2503e3b616001a28affadRussell King .ops = &ixp4xx_ops, 690f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones .preinit = avila_pci_preinit, 700f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones .setup = ixp4xx_setup, 710f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones .map_irq = avila_map_irq, 720f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones}; 730f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 740f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jonesint __init avila_pci_init(void) 750f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones{ 760f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones if (machine_is_avila() || machine_is_loft()) 770f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones pci_common_init(&avila_pci); 780f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones return 0; 790f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones} 800f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jones 810f1859719537acf5a611fd18be5d81c0cfd5fbf4Michael-Luke Jonessubsys_initcall(avila_pci_init); 82