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authorJesse Gross <jesse@nicira.com>2010-10-21 07:30:42 -0400
committerDavid S. Miller <davem@davemloft.net>2010-10-21 22:59:31 -0400
commit0988c4c7fb5881377ec20a6452f739a722e97c6b (patch)
treeda72b7404960d912b7646a7749ac5829e30d96cd /lib/ts_kmp.c
parent2198a10b501fd4443430cb17e065a9e859cc58c9 (diff)
vlan: Calling vlan_hwaccel_do_receive() is always valid.
It is now acceptable to receive vlan tagged packets at any time, even if CONFIG_VLAN_8021Q is not set. This means that calling vlan_hwaccel_do_receive() should not result in BUG() but rather just behave as if there were no vlan devices configured. Reported-by: Vladislav Zolotarov <vladz@broadcom.com> Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/ts_kmp.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.2 (git 2.25.0) at 2025-11-02 00:01:16 -0400
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/*
 * plat smp support for CSR Marco dual-core SMP SoCs
 *
 * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
 *
 * Licensed under GPLv2 or later.
 */

#include <linux/init.h>
#include <linux/smp.h>
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <asm/page.h>
#include <asm/mach/map.h>
#include <asm/smp_plat.h>
#include <asm/smp_scu.h>
#include <asm/cacheflush.h>
#include <asm/cputype.h>

#include "common.h"

static void __iomem *clk_base;

static DEFINE_SPINLOCK(boot_lock);

static void sirfsoc_secondary_init(unsigned int cpu)
{
	/*
	 * let the primary processor know we're out of the
	 * pen, then head off into the C entry point
	 */
	pen_release = -1;
	smp_wmb();

	/*
	 * Synchronise with the boot thread.
	 */
	spin_lock(&boot_lock);
	spin_unlock(&boot_lock);
}

static const struct of_device_id clk_ids[]  = {
	{ .compatible = "sirf,atlas7-clkc" },
	{},
};

static int sirfsoc_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
	unsigned long timeout;
	struct device_node *np;

	np = of_find_matching_node(NULL, clk_ids);
	if (!np)
		return -ENODEV;

	clk_base = of_iomap(np, 0);
	if (!clk_base)
		return -ENOMEM;

	/*
	 * write the address of secondary startup into the clkc register
	 * at offset 0x2bC, then write the magic number 0x3CAF5D62 to the
	 * clkc register at offset 0x2b8, which is what boot rom code is
	 * waiting for. This would wake up the secondary core from WFE
	 */
#define SIRFSOC_CPU1_JUMPADDR_OFFSET 0x2bc
	__raw_writel(virt_to_phys(sirfsoc_secondary_startup),
		clk_base + SIRFSOC_CPU1_JUMPADDR_OFFSET);

#define SIRFSOC_CPU1_WAKEMAGIC_OFFSET 0x2b8
	__raw_writel(0x3CAF5D62,
		clk_base + SIRFSOC_CPU1_WAKEMAGIC_OFFSET);

	/* make sure write buffer is drained */
	mb();

	spin_lock(&boot_lock);

	/*
	 * The secondary processor is waiting to be released from
	 * the holding pen - release it, then wait for it to flag
	 * that it has been released by resetting pen_release.
	 *
	 * Note that "pen_release" is the hardware CPU ID, whereas
	 * "cpu" is Linux's internal ID.
	 */