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