b1cffebf10
In preparation of moving gic code to drivers/irqchip, remove the direct platform dependencies on gic_raise_softirq. Move the setup of smp_cross_call into the gic code and use arch_send_wakeup_ipi_mask function to trigger wake-up IPIs. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Shiraz Hashim <shiraz.hashim@st.com> Acked-by: Stephen Warren <swarren@nvidia.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org> Acked-by: Olof Johansson <olof@lixom.net>
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
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* linux/arch/arm/mach-realview/platsmp.c
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*
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* Copyright (C) 2002 ARM Ltd.
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/smp.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/smp_scu.h>
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#include <mach/board-eb.h>
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#include <mach/board-pb11mp.h>
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#include <mach/board-pbx.h>
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#include <plat/platsmp.h>
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#include "core.h"
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static void __iomem *scu_base_addr(void)
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{
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if (machine_is_realview_eb_mp())
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return __io_address(REALVIEW_EB11MP_SCU_BASE);
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else if (machine_is_realview_pb11mp())
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return __io_address(REALVIEW_TC11MP_SCU_BASE);
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else if (machine_is_realview_pbx() &&
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(core_tile_pbx11mp() || core_tile_pbxa9mp()))
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return __io_address(REALVIEW_PBX_TILE_SCU_BASE);
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else
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return (void __iomem *)0;
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}
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/*
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* Initialise the CPU possible map early - this describes the CPUs
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* which may be present or become present in the system.
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*/
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static void __init realview_smp_init_cpus(void)
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{
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void __iomem *scu_base = scu_base_addr();
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unsigned int i, ncores;
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ncores = scu_base ? scu_get_core_count(scu_base) : 1;
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/* sanity check */
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if (ncores > nr_cpu_ids) {
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pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
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ncores, nr_cpu_ids);
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ncores = nr_cpu_ids;
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}
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for (i = 0; i < ncores; i++)
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set_cpu_possible(i, true);
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}
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static void __init realview_smp_prepare_cpus(unsigned int max_cpus)
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{
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scu_enable(scu_base_addr());
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/*
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* Write the address of secondary startup into the
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* system-wide flags register. The BootMonitor waits
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* until it receives a soft interrupt, and then the
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* secondary CPU branches to this address.
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*/
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__raw_writel(virt_to_phys(versatile_secondary_startup),
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__io_address(REALVIEW_SYS_FLAGSSET));
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}
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struct smp_operations realview_smp_ops __initdata = {
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.smp_init_cpus = realview_smp_init_cpus,
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.smp_prepare_cpus = realview_smp_prepare_cpus,
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.smp_secondary_init = versatile_secondary_init,
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.smp_boot_secondary = versatile_boot_secondary,
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#ifdef CONFIG_HOTPLUG_CPU
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.cpu_die = realview_cpu_die,
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#endif
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};
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