From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2on0124.outbound.protection.outlook.com [65.55.169.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id E008F1A1D32 for ; Thu, 13 Aug 2015 06:15:10 +1000 (AEST) From: Roy Pledge To: , CC: , Subject: [v2 10/11] soc/qman: Add HOTPLUG_CPU support to the QMan driver Date: Wed, 12 Aug 2015 16:14:56 -0400 Message-ID: <1439410497-19039-11-git-send-email-Roy.Pledge@freescale.com> In-Reply-To: <1439410497-19039-1-git-send-email-Roy.Pledge@freescale.com> References: <1439410497-19039-1-git-send-email-Roy.Pledge@freescale.com> Reply-To: MIME-Version: 1.0 Content-Type: text/plain List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Hai-Ying Wang Add support for CPU hotplug for the DPAA 1.0 Queue Manager driver. Signed-off-by: Hai-Ying Wang Signed-off-by: Emil Medve Signed-off-by: Roy Pledge --- drivers/soc/fsl/qbman/qman_portal.c | 43 +++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index ad9e3ba..85acba2 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -474,6 +474,46 @@ static void qman_offline_cpu(unsigned int cpu) } } +#ifdef CONFIG_HOTPLUG_CPU +static void qman_online_cpu(unsigned int cpu) +{ + struct qman_portal *p; + const struct qm_portal_config *pcfg; + + p = (struct qman_portal *)affine_portals[cpu]; + if (p) { + pcfg = qman_get_qm_portal_config(p); + if (pcfg) { + irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(cpu)); + qman_portal_update_sdest(pcfg, cpu); + } + } +} + +static int qman_hotplug_cpu_callback(struct notifier_block *nfb, + unsigned long action, void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + + switch (action) { + case CPU_ONLINE: + case CPU_ONLINE_FROZEN: + qman_online_cpu(cpu); + break; + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: + qman_offline_cpu(cpu); + default: + break; + } + return NOTIFY_OK; +} + +static struct notifier_block qman_hotplug_cpu_notifier = { + .notifier_call = qman_hotplug_cpu_callback, +}; +#endif /* CONFIG_HOTPLUG_CPU */ + __init int qman_init(void) { struct cpumask slave_cpus; @@ -597,6 +637,9 @@ __init int qman_init(void) cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask); for_each_cpu(cpu, &offline_cpus) qman_offline_cpu(cpu); +#ifdef CONFIG_HOTPLUG_CPU + register_hotcpu_notifier(&qman_hotplug_cpu_notifier); +#endif return 0; } -- 1.7.9.5