1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org) 7 * 8 * Symmetric Uniprocessor (TM) Support 9 */ 10 #include <linux/kernel.h> 11 #include <linux/sched.h> 12 13 /* 14 * Send inter-processor interrupt 15 */ 16 static void up_send_ipi_single(int cpu, unsigned int action) 17 { 18 panic(KERN_ERR "%s called", __func__); 19 } 20 21 static inline void up_send_ipi_mask(const struct cpumask *mask, 22 unsigned int action) 23 { 24 panic(KERN_ERR "%s called", __func__); 25 } 26 27 /* 28 * After we've done initial boot, this function is called to allow the 29 * board code to clean up state, if needed 30 */ 31 static void up_init_secondary(void) 32 { 33 } 34 35 static void up_smp_finish(void) 36 { 37 } 38 39 /* Hook for after all CPUs are online */ 40 static void up_cpus_done(void) 41 { 42 } 43 44 /* 45 * Firmware CPU startup hook 46 */ 47 static void up_boot_secondary(int cpu, struct task_struct *idle) 48 { 49 } 50 51 static void __init up_smp_setup(void) 52 { 53 } 54 55 static void __init up_prepare_cpus(unsigned int max_cpus) 56 { 57 } 58 59 #ifdef CONFIG_HOTPLUG_CPU 60 static int up_cpu_disable(void) 61 { 62 return -ENOSYS; 63 } 64 65 static void up_cpu_die(unsigned int cpu) 66 { 67 BUG(); 68 } 69 #endif 70 71 struct plat_smp_ops up_smp_ops = { 72 .send_ipi_single = up_send_ipi_single, 73 .send_ipi_mask = up_send_ipi_mask, 74 .init_secondary = up_init_secondary, 75 .smp_finish = up_smp_finish, 76 .cpus_done = up_cpus_done, 77 .boot_secondary = up_boot_secondary, 78 .smp_setup = up_smp_setup, 79 .prepare_cpus = up_prepare_cpus, 80 #ifdef CONFIG_HOTPLUG_CPU 81 .cpu_disable = up_cpu_disable, 82 .cpu_die = up_cpu_die, 83 #endif 84 }; 85