18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * arch/arm/mach-ixp4xx/nas100d-pci.c 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * NAS 100d board-level PCI initialization 68c2ecf20Sopenharmony_ci * 78c2ecf20Sopenharmony_ci * based on ixdp425-pci.c: 88c2ecf20Sopenharmony_ci * Copyright (C) 2002 Intel Corporation. 98c2ecf20Sopenharmony_ci * Copyright (C) 2003-2004 MontaVista Software, Inc. 108c2ecf20Sopenharmony_ci * 118c2ecf20Sopenharmony_ci * Maintainer: http://www.nslu2-linux.org/ 128c2ecf20Sopenharmony_ci */ 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ci#include <linux/pci.h> 158c2ecf20Sopenharmony_ci#include <linux/init.h> 168c2ecf20Sopenharmony_ci#include <linux/irq.h> 178c2ecf20Sopenharmony_ci#include <asm/mach/pci.h> 188c2ecf20Sopenharmony_ci#include <asm/mach-types.h> 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci#include "irqs.h" 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci#define MAX_DEV 3 238c2ecf20Sopenharmony_ci#define IRQ_LINES 3 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci/* PCI controller GPIO to IRQ pin mappings */ 268c2ecf20Sopenharmony_ci#define INTA 11 278c2ecf20Sopenharmony_ci#define INTB 10 288c2ecf20Sopenharmony_ci#define INTC 9 298c2ecf20Sopenharmony_ci#define INTD 8 308c2ecf20Sopenharmony_ci#define INTE 7 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_civoid __init nas100d_pci_preinit(void) 338c2ecf20Sopenharmony_ci{ 348c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); 358c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); 368c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); 378c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); 388c2ecf20Sopenharmony_ci irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW); 398c2ecf20Sopenharmony_ci ixp4xx_pci_preinit(); 408c2ecf20Sopenharmony_ci} 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_cistatic int __init nas100d_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 438c2ecf20Sopenharmony_ci{ 448c2ecf20Sopenharmony_ci static int pci_irq_table[MAX_DEV][IRQ_LINES] = { 458c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTA), -1, -1 }, 468c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTB), -1, -1 }, 478c2ecf20Sopenharmony_ci { IXP4XX_GPIO_IRQ(INTC), IXP4XX_GPIO_IRQ(INTD), 488c2ecf20Sopenharmony_ci IXP4XX_GPIO_IRQ(INTE) }, 498c2ecf20Sopenharmony_ci }; 508c2ecf20Sopenharmony_ci 518c2ecf20Sopenharmony_ci if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) 528c2ecf20Sopenharmony_ci return pci_irq_table[slot - 1][pin - 1]; 538c2ecf20Sopenharmony_ci 548c2ecf20Sopenharmony_ci return -1; 558c2ecf20Sopenharmony_ci} 568c2ecf20Sopenharmony_ci 578c2ecf20Sopenharmony_cistruct hw_pci __initdata nas100d_pci = { 588c2ecf20Sopenharmony_ci .nr_controllers = 1, 598c2ecf20Sopenharmony_ci .ops = &ixp4xx_ops, 608c2ecf20Sopenharmony_ci .preinit = nas100d_pci_preinit, 618c2ecf20Sopenharmony_ci .setup = ixp4xx_setup, 628c2ecf20Sopenharmony_ci .map_irq = nas100d_map_irq, 638c2ecf20Sopenharmony_ci}; 648c2ecf20Sopenharmony_ci 658c2ecf20Sopenharmony_ciint __init nas100d_pci_init(void) 668c2ecf20Sopenharmony_ci{ 678c2ecf20Sopenharmony_ci if (machine_is_nas100d()) 688c2ecf20Sopenharmony_ci pci_common_init(&nas100d_pci); 698c2ecf20Sopenharmony_ci 708c2ecf20Sopenharmony_ci return 0; 718c2ecf20Sopenharmony_ci} 728c2ecf20Sopenharmony_ci 738c2ecf20Sopenharmony_cisubsys_initcall(nas100d_pci_init); 74