18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * DSM-G600 board-level PCI initialization 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 2006 Tower Technologies 68c2ecf20Sopenharmony_ci * Author: Alessandro Zummo <a.zummo@towertech.it> 78c2ecf20Sopenharmony_ci * 88c2ecf20Sopenharmony_ci * based on ixdp425-pci.c: 98c2ecf20Sopenharmony_ci * Copyright (C) 2002 Intel Corporation. 108c2ecf20Sopenharmony_ci * Copyright (C) 2003-2004 MontaVista Software, Inc. 118c2ecf20Sopenharmony_ci * 128c2ecf20Sopenharmony_ci * Maintainer: http://www.nslu2-linux.org/ 138c2ecf20Sopenharmony_ci */ 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#include <linux/pci.h> 168c2ecf20Sopenharmony_ci#include <linux/init.h> 178c2ecf20Sopenharmony_ci#include <linux/irq.h> 188c2ecf20Sopenharmony_ci#include <asm/mach/pci.h> 198c2ecf20Sopenharmony_ci#include <asm/mach-types.h> 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci#include "irqs.h" 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci#define MAX_DEV 4 248c2ecf20Sopenharmony_ci#define IRQ_LINES 3 258c2ecf20Sopenharmony_ci 268c2ecf20Sopenharmony_ci/* PCI controller GPIO to IRQ pin mappings */ 278c2ecf20Sopenharmony_ci#define INTA 11 288c2ecf20Sopenharmony_ci#define INTB 10 298c2ecf20Sopenharmony_ci#define INTC 9 308c2ecf20Sopenharmony_ci#define INTD 8 318c2ecf20Sopenharmony_ci#define INTE 7 328c2ecf20Sopenharmony_ci#define INTF 6 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_civoid __init dsmg600_pci_preinit(void) 358c2ecf20Sopenharmony_ci{ 368c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); 378c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); 388c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); 398c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); 408c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW); 418c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTF), IRQ_TYPE_LEVEL_LOW); 428c2ecf20Sopenharmony_ci ixp4xx_pci_preinit(); 438c2ecf20Sopenharmony_ci} 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_cistatic int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 468c2ecf20Sopenharmony_ci{ 478c2ecf20Sopenharmony_ci static int pci_irq_table[MAX_DEV][IRQ_LINES] = { 488c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTE), -1, -1 }, 498c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTA), -1, -1 }, 508c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTB), IXP4XX_GPIO_IRQ(INTC), 518c2ecf20Sopenharmony_ci IXP4XX_GPIO_IRQ(INTD) }, 528c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTF), -1, -1 }, 538c2ecf20Sopenharmony_ci }; 548c2ecf20Sopenharmony_ci 558c2ecf20Sopenharmony_ci if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) 568c2ecf20Sopenharmony_ci return pci_irq_table[slot - 1][pin - 1]; 578c2ecf20Sopenharmony_ci 588c2ecf20Sopenharmony_ci return -1; 598c2ecf20Sopenharmony_ci} 608c2ecf20Sopenharmony_ci 618c2ecf20Sopenharmony_cistruct hw_pci __initdata dsmg600_pci = { 628c2ecf20Sopenharmony_ci .nr_controllers = 1, 638c2ecf20Sopenharmony_ci .ops = &ixp4xx_ops, 648c2ecf20Sopenharmony_ci .preinit = dsmg600_pci_preinit, 658c2ecf20Sopenharmony_ci .setup = ixp4xx_setup, 668c2ecf20Sopenharmony_ci .map_irq = dsmg600_map_irq, 678c2ecf20Sopenharmony_ci}; 688c2ecf20Sopenharmony_ci 698c2ecf20Sopenharmony_ciint __init dsmg600_pci_init(void) 708c2ecf20Sopenharmony_ci{ 718c2ecf20Sopenharmony_ci if (machine_is_dsmg600()) 728c2ecf20Sopenharmony_ci pci_common_init(&dsmg600_pci); 738c2ecf20Sopenharmony_ci 748c2ecf20Sopenharmony_ci return 0; 758c2ecf20Sopenharmony_ci} 768c2ecf20Sopenharmony_ci 778c2ecf20Sopenharmony_cisubsys_initcall(dsmg600_pci_init); 78