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66 lines
1.5 KiB
66 lines
1.5 KiB
/* |
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* Copyright (C) 2013 Imagination Technologies |
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* Author: Paul Burton <paul.burton@imgtec.com> |
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* |
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* Based on smp-cmp.c: |
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* Copyright (C) 2007 MIPS Technologies, Inc. |
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* Author: Chris Dearman (chris@mips.com) |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the |
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* Free Software Foundation; either version 2 of the License, or (at your |
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* option) any later version. |
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*/ |
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#include <linux/irqchip/mips-gic.h> |
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#include <linux/printk.h> |
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#include <asm/mips-cpc.h> |
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#include <asm/smp-ops.h> |
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void gic_send_ipi_single(int cpu, unsigned int action) |
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{ |
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unsigned long flags; |
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unsigned int intr; |
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unsigned int core = cpu_data[cpu].core; |
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pr_debug("CPU%d: %s cpu %d action %u status %08x\n", |
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smp_processor_id(), __func__, cpu, action, read_c0_status()); |
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local_irq_save(flags); |
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switch (action) { |
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case SMP_CALL_FUNCTION: |
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intr = plat_ipi_call_int_xlate(cpu); |
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break; |
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case SMP_RESCHEDULE_YOURSELF: |
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intr = plat_ipi_resched_int_xlate(cpu); |
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break; |
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default: |
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BUG(); |
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} |
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gic_send_ipi(intr); |
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if (mips_cpc_present() && (core != current_cpu_data.core)) { |
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while (!cpumask_test_cpu(cpu, &cpu_coherent_mask)) { |
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mips_cm_lock_other(core, 0); |
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mips_cpc_lock_other(core); |
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write_cpc_co_cmd(CPC_Cx_CMD_PWRUP); |
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mips_cpc_unlock_other(); |
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mips_cm_unlock_other(); |
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} |
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} |
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local_irq_restore(flags); |
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} |
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void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action) |
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{ |
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unsigned int i; |
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for_each_cpu(i, mask) |
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gic_send_ipi_single(i, action); |
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}
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