1fbf04d81SThomas Petazzoni /* 2fbf04d81SThomas Petazzoni * Maxtor Shared Storage II Board Setup 3fbf04d81SThomas Petazzoni * 4fbf04d81SThomas Petazzoni * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> 5fbf04d81SThomas Petazzoni * 6fbf04d81SThomas Petazzoni * This program is free software; you can redistribute it and/or 7fbf04d81SThomas Petazzoni * modify it under the terms of the GNU General Public License 8fbf04d81SThomas Petazzoni * as published by the Free Software Foundation; either version 9fbf04d81SThomas Petazzoni * 2 of the License, or (at your option) any later version. 10fbf04d81SThomas Petazzoni */ 11fbf04d81SThomas Petazzoni 12fbf04d81SThomas Petazzoni #include <linux/kernel.h> 13fbf04d81SThomas Petazzoni #include <linux/init.h> 14fbf04d81SThomas Petazzoni #include <linux/platform_device.h> 15fbf04d81SThomas Petazzoni #include <linux/pci.h> 16fbf04d81SThomas Petazzoni #include <linux/irq.h> 17fbf04d81SThomas Petazzoni #include <asm/mach-types.h> 18fbf04d81SThomas Petazzoni #include <asm/mach/arch.h> 19fbf04d81SThomas Petazzoni #include <asm/mach/pci.h> 20fbf04d81SThomas Petazzoni #include <mach/orion5x.h> 21fbf04d81SThomas Petazzoni #include <mach/bridge-regs.h> 22fbf04d81SThomas Petazzoni #include "common.h" 23fbf04d81SThomas Petazzoni 24fbf04d81SThomas Petazzoni /***************************************************************************** 25fbf04d81SThomas Petazzoni * Maxtor Shared Storage II Info 26fbf04d81SThomas Petazzoni ****************************************************************************/ 27fbf04d81SThomas Petazzoni 28fbf04d81SThomas Petazzoni /**************************************************************************** 29fbf04d81SThomas Petazzoni * PCI setup 30fbf04d81SThomas Petazzoni ****************************************************************************/ 31fbf04d81SThomas Petazzoni static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 32fbf04d81SThomas Petazzoni { 33fbf04d81SThomas Petazzoni int irq; 34fbf04d81SThomas Petazzoni 35fbf04d81SThomas Petazzoni /* 36fbf04d81SThomas Petazzoni * Check for devices with hard-wired IRQs. 37fbf04d81SThomas Petazzoni */ 38fbf04d81SThomas Petazzoni irq = orion5x_pci_map_irq(dev, slot, pin); 39fbf04d81SThomas Petazzoni if (irq != -1) 40fbf04d81SThomas Petazzoni return irq; 41fbf04d81SThomas Petazzoni 42fbf04d81SThomas Petazzoni return -1; 43fbf04d81SThomas Petazzoni } 44fbf04d81SThomas Petazzoni 45fbf04d81SThomas Petazzoni static struct hw_pci mss2_pci __initdata = { 46fbf04d81SThomas Petazzoni .nr_controllers = 2, 47fbf04d81SThomas Petazzoni .setup = orion5x_pci_sys_setup, 48fbf04d81SThomas Petazzoni .scan = orion5x_pci_sys_scan_bus, 49fbf04d81SThomas Petazzoni .map_irq = mss2_pci_map_irq, 50fbf04d81SThomas Petazzoni }; 51fbf04d81SThomas Petazzoni 52fbf04d81SThomas Petazzoni static int __init mss2_pci_init(void) 53fbf04d81SThomas Petazzoni { 54fbf04d81SThomas Petazzoni if (machine_is_mss2()) 55fbf04d81SThomas Petazzoni pci_common_init(&mss2_pci); 56fbf04d81SThomas Petazzoni 57fbf04d81SThomas Petazzoni return 0; 58fbf04d81SThomas Petazzoni } 59fbf04d81SThomas Petazzoni subsys_initcall(mss2_pci_init); 60fbf04d81SThomas Petazzoni 61fbf04d81SThomas Petazzoni /***************************************************************************** 62fbf04d81SThomas Petazzoni * MSS2 power off method 63fbf04d81SThomas Petazzoni ****************************************************************************/ 64fbf04d81SThomas Petazzoni /* 65fbf04d81SThomas Petazzoni * On the Maxtor Shared Storage II, the shutdown process is the following : 66fbf04d81SThomas Petazzoni * - Userland modifies U-boot env to tell U-boot to go idle at next boot 67fbf04d81SThomas Petazzoni * - The board reboots 68fbf04d81SThomas Petazzoni * - U-boot starts and go into an idle mode until the user press "power" 69fbf04d81SThomas Petazzoni */ 70fbf04d81SThomas Petazzoni static void mss2_power_off(void) 71fbf04d81SThomas Petazzoni { 72fbf04d81SThomas Petazzoni u32 reg; 73fbf04d81SThomas Petazzoni 74fbf04d81SThomas Petazzoni /* 75fbf04d81SThomas Petazzoni * Enable and issue soft reset 76fbf04d81SThomas Petazzoni */ 77fbf04d81SThomas Petazzoni reg = readl(RSTOUTn_MASK); 78fbf04d81SThomas Petazzoni reg |= 1 << 2; 79fbf04d81SThomas Petazzoni writel(reg, RSTOUTn_MASK); 80fbf04d81SThomas Petazzoni 81fbf04d81SThomas Petazzoni reg = readl(CPU_SOFT_RESET); 82fbf04d81SThomas Petazzoni reg |= 1; 83fbf04d81SThomas Petazzoni writel(reg, CPU_SOFT_RESET); 84fbf04d81SThomas Petazzoni } 85fbf04d81SThomas Petazzoni 86fbf04d81SThomas Petazzoni void __init mss2_init(void) 87fbf04d81SThomas Petazzoni { 88fbf04d81SThomas Petazzoni /* register mss2 specific power-off method */ 89fbf04d81SThomas Petazzoni pm_power_off = mss2_power_off; 90fbf04d81SThomas Petazzoni } 91