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Diffstat (limited to 'arch/mips/netlogic/xlr/smp.c')
| -rw-r--r-- | arch/mips/netlogic/xlr/smp.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/arch/mips/netlogic/xlr/smp.c b/arch/mips/netlogic/xlr/smp.c deleted file mode 100644 index 080284ded508..000000000000 --- a/arch/mips/netlogic/xlr/smp.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights - * reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the NetLogic - * license below: - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/irq.h> - -#include <asm/mmu_context.h> - -#include <asm/netlogic/interrupt.h> -#include <asm/netlogic/mips-extns.h> - -#include <asm/netlogic/xlr/iomap.h> -#include <asm/netlogic/xlr/pic.h> -#include <asm/netlogic/xlr/xlr.h> - -void core_send_ipi(int logical_cpu, unsigned int action) -{ - int cpu = cpu_logical_map(logical_cpu); - u32 tid = cpu & 0x3; - u32 pid = (cpu >> 2) & 0x07; - u32 ipi = (tid << 16) | (pid << 20); - - if (action & SMP_CALL_FUNCTION) - ipi |= IRQ_IPI_SMP_FUNCTION; - else if (action & SMP_RESCHEDULE_YOURSELF) - ipi |= IRQ_IPI_SMP_RESCHEDULE; - else - return; - - pic_send_ipi(ipi); -} - -void nlm_send_ipi_single(int cpu, unsigned int action) -{ - core_send_ipi(cpu, action); -} - -void nlm_send_ipi_mask(const struct cpumask *mask, unsigned int action) -{ - int cpu; - - for_each_cpu(cpu, mask) { - core_send_ipi(cpu, action); - } -} - -/* IRQ_IPI_SMP_FUNCTION Handler */ -void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc) -{ - smp_call_function_interrupt(); -} - -/* IRQ_IPI_SMP_RESCHEDULE handler */ -void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc) -{ - scheduler_ipi(); -} - -/* - * Called before going into mips code, early cpu init - */ -void nlm_early_init_secondary(void) -{ - write_c0_ebase((uint32_t)nlm_common_ebase); - /* TLB partition here later */ -} - -/* - * Code to run on secondary just after probing the CPU - */ -static void __cpuinit nlm_init_secondary(void) -{ - nlm_smp_irq_init(); -} - -void nlm_smp_finish(void) -{ -#ifdef notyet - nlm_common_msgring_cpu_init(); -#endif - local_irq_enable(); -} - -void nlm_cpus_done(void) -{ -} - -/* - * Boot all other cpus in the system, initialize them, and bring them into - * the boot function - */ -int nlm_cpu_unblock[NR_CPUS]; -int nlm_cpu_ready[NR_CPUS]; -unsigned long nlm_next_gp; -unsigned long nlm_next_sp; -cpumask_t phys_cpu_present_map; - -void nlm_boot_secondary(int logical_cpu, struct task_struct *idle) -{ - unsigned long gp = (unsigned long)task_thread_info(idle); - unsigned long sp = (unsigned long)__KSTK_TOS(idle); - int cpu = cpu_logical_map(logical_cpu); - - nlm_next_sp = sp; - nlm_next_gp = gp; - - /* barrier */ - __sync(); - nlm_cpu_unblock[cpu] = 1; -} - -void __init nlm_smp_setup(void) -{ - unsigned int boot_cpu; - int num_cpus, i; - - boot_cpu = hard_smp_processor_id(); - cpus_clear(phys_cpu_present_map); - - cpu_set(boot_cpu, phys_cpu_present_map); - __cpu_number_map[boot_cpu] = 0; - __cpu_logical_map[0] = boot_cpu; - cpu_set(0, cpu_possible_map); - - num_cpus = 1; - for (i = 0; i < NR_CPUS; i++) { - /* - * BSP is not set in nlm_cpu_ready array, it is only for - * ASPs (goto see smpboot.S) - */ - if (nlm_cpu_ready[i]) { - cpu_set(i, phys_cpu_present_map); - __cpu_number_map[i] = num_cpus; - __cpu_logical_map[num_cpus] = i; - cpu_set(num_cpus, cpu_possible_map); - ++num_cpus; - } - } - - pr_info("Phys CPU present map: %lx, possible map %lx\n", - (unsigned long)phys_cpu_present_map.bits[0], - (unsigned long)cpu_possible_map.bits[0]); - - pr_info("Detected %i Slave CPU(s)\n", num_cpus); -} - -void nlm_prepare_cpus(unsigned int max_cpus) -{ -} - -struct plat_smp_ops nlm_smp_ops = { - .send_ipi_single = nlm_send_ipi_single, - .send_ipi_mask = nlm_send_ipi_mask, - .init_secondary = nlm_init_secondary, - .smp_finish = nlm_smp_finish, - .cpus_done = nlm_cpus_done, - .boot_secondary = nlm_boot_secondary, - .smp_setup = nlm_smp_setup, - .prepare_cpus = nlm_prepare_cpus, -}; - -unsigned long secondary_entry_point; - -int __cpuinit nlm_wakeup_secondary_cpus(u32 wakeup_mask) -{ - unsigned int tid, pid, ipi, i, boot_cpu; - void *reset_vec; - - secondary_entry_point = (unsigned long)prom_pre_boot_secondary_cpus; - reset_vec = (void *)CKSEG1ADDR(0x1fc00000); - memcpy(reset_vec, nlm_boot_smp_nmi, 0x80); - boot_cpu = hard_smp_processor_id(); - - for (i = 0; i < NR_CPUS; i++) { - if (i == boot_cpu) - continue; - if (wakeup_mask & (1u << i)) { - tid = i & 0x3; - pid = (i >> 2) & 0x7; - ipi = (tid << 16) | (pid << 20) | (1 << 8); - pic_send_ipi(ipi); - } - } - - return 0; -} |