From patchwork Wed Oct 31 14:58:34 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 1679451 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id A7BF9DF264 for ; Wed, 31 Oct 2012 15:02:18 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TTZlK-0000m8-8F; Wed, 31 Oct 2012 14:59:22 +0000 Received: from mail-bk0-f49.google.com ([209.85.214.49]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TTZl9-0000jK-2C for linux-arm-kernel@lists.infradead.org; Wed, 31 Oct 2012 14:59:16 +0000 Received: by mail-bk0-f49.google.com with SMTP id j4so666651bkw.36 for ; Wed, 31 Oct 2012 07:59:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=tfZkGbk7lg/sludFTN0vlTRFI30y9ejilrxL6t4X8Ow=; b=nszM1Fn0TGuHoHGnve4SoFfkjWSZOz1siOpbfPeTWUNcTv/9XuCpUZkM4Bx0J8AmF3 5L7A4Tkll86kLZwIfiPJ6dBincWgo5U8/oI1biUtFD8U0RXFTSdWfcOxYQ1GKrvLSs86 X3NP7m4cPtSrCoqdusZtMMcXa5JuHVb5wR/FrUfmQP3Hv20tmmQnR2KRnyKk9QF22f9z CgiqBzFczetiP6Ljrc9+FiYJRwe+KSSUHt4wbHXcgpSvJbe+FeSVlq5sKmDt87r43t0C jBoFM2iy1S4TsKZGWOScDmFnaf47klgMTXZWI1J/M5ag+EylXSMLzMbB7paxCeI2In7L MCwQ== Received: by 10.204.128.201 with SMTP id l9mr11154810bks.66.1351695550613; Wed, 31 Oct 2012 07:59:10 -0700 (PDT) Received: from localhost.localdomain ([91.224.175.20]) by mx.google.com with ESMTPS id e3sm3594523bks.7.2012.10.31.07.58.53 (version=SSLv3 cipher=OTHER); Wed, 31 Oct 2012 07:59:07 -0700 (PDT) From: Rob Herring To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 2/5] ARM: gic: remove direct use of gic_raise_softirq Date: Wed, 31 Oct 2012 09:58:34 -0500 Message-Id: <1351695517-5636-3-git-send-email-robherring2@gmail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1351695517-5636-1-git-send-email-robherring2@gmail.com> References: <1351695517-5636-1-git-send-email-robherring2@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20121031_105911_472553_31D4A619 X-CRM114-Status: GOOD ( 27.20 ) X-Spam-Score: 0.5 (/) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (0.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.214.49 listed in list.dnswl.org] 3.0 KHOP_BIG_TO_CC Sent to 10+ recipients instaed of Bcc or a list 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (robherring2[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in digit (robherring2[at]gmail.com) -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Cc: Thomas Petazzoni , Kukjin Kim , Russell King , Arnd Bergmann , Stephen Warren , Tony Lindgren , catalin.marinas@arm.com, Linus Walleij , Srinidhi Kasagar , Magnus Damm , Rob Herring , Shiraz Hashim , Bryan Huntsman , Paul Mundt , Viresh Kumar , Sascha Hauer , Olof Johansson , Daniel Walker , Thomas Gleixner , David Brown X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Rob Herring 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. Now that all platforms are using IPI#0 for core wakeup, create a common wakeup ipi function. Signed-off-by: Rob Herring Cc: Russell King Cc: Kukjin Kim Cc: Rob Herring Cc: Sascha Hauer Cc: David Brown Cc: Daniel Walker Cc: Bryan Huntsman Cc: Tony Lindgren Cc: Paul Mundt Cc: Magnus Damm Cc: Viresh Kumar Cc: Shiraz Hashim Cc: Stephen Warren Cc: Srinidhi Kasagar Cc: Linus Walleij Acked-by: Tony Lindgren Acked-by: Viresh Kumar Acked-by: Santosh Shilimkar --- arch/arm/common/gic.c | 45 +++++++++++++++++++---------------- arch/arm/include/asm/hardware/gic.h | 1 - arch/arm/include/asm/smp.h | 1 + arch/arm/kernel/smp.c | 5 ++++ arch/arm/mach-exynos/platsmp.c | 4 +--- arch/arm/mach-highbank/platsmp.c | 4 +--- arch/arm/mach-imx/platsmp.c | 2 -- arch/arm/mach-msm/platsmp.c | 4 +--- arch/arm/mach-omap2/omap-smp.c | 4 +--- arch/arm/mach-realview/platsmp.c | 2 -- arch/arm/mach-shmobile/platsmp.c | 2 -- arch/arm/mach-shmobile/smp-emev2.c | 2 +- arch/arm/mach-spear13xx/platsmp.c | 2 -- arch/arm/mach-tegra/platsmp.c | 2 -- arch/arm/mach-ux500/platsmp.c | 2 -- arch/arm/mach-vexpress/ct-ca9x4.c | 2 -- arch/arm/mach-vexpress/platsmp.c | 2 -- arch/arm/plat-versatile/platsmp.c | 2 +- 18 files changed, 36 insertions(+), 52 deletions(-) diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 55ea0d7..1bee954 100644 --- a/arch/arm/common/gic.c +++ b/arch/arm/common/gic.c @@ -616,6 +616,27 @@ static void __init gic_pm_init(struct gic_chip_data *gic) } #endif +#ifdef CONFIG_SMP +static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq) +{ + int cpu; + unsigned long map = 0; + + /* Convert our logical CPU mask into a physical one. */ + for_each_cpu(cpu, mask) + map |= 1 << cpu_logical_map(cpu); + + /* + * Ensure that stores to Normal memory are visible to the + * other CPUs before issuing the IPI. + */ + dsb(); + + /* this always happens on GIC0 */ + writel_relaxed(map << 16 | irq, gic_data_dist_base(&gic_data[0]) + GIC_DIST_SOFTINT); +} +#endif + static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) { @@ -735,6 +756,9 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start, if (WARN_ON(!gic->domain)) return; +#ifdef CONFIG_SMP + set_smp_cross_call(gic_raise_softirq); +#endif gic_chip.flags |= gic_arch_extn.flags; gic_dist_init(gic); gic_cpu_init(gic); @@ -748,27 +772,6 @@ void __cpuinit gic_secondary_init(unsigned int gic_nr) gic_cpu_init(&gic_data[gic_nr]); } -#ifdef CONFIG_SMP -void gic_raise_softirq(const struct cpumask *mask, unsigned int irq) -{ - int cpu; - unsigned long map = 0; - - /* Convert our logical CPU mask into a physical one. */ - for_each_cpu(cpu, mask) - map |= 1 << cpu_logical_map(cpu); - - /* - * Ensure that stores to Normal memory are visible to the - * other CPUs before issuing the IPI. - */ - dsb(); - - /* this always happens on GIC0 */ - writel_relaxed(map << 16 | irq, gic_data_dist_base(&gic_data[0]) + GIC_DIST_SOFTINT); -} -#endif - #ifdef CONFIG_OF static int gic_cnt __initdata = 0; diff --git a/arch/arm/include/asm/hardware/gic.h b/arch/arm/include/asm/hardware/gic.h index 8073dce..ed013df 100644 --- a/arch/arm/include/asm/hardware/gic.h +++ b/arch/arm/include/asm/hardware/gic.h @@ -26,7 +26,6 @@ int gic_of_init(struct device_node *node, struct device_node *parent); void gic_secondary_init(unsigned int); void gic_handle_irq(struct pt_regs *regs); void gic_cascade_irq(unsigned int gic_nr, unsigned int irq); -void gic_raise_softirq(const struct cpumask *mask, unsigned int irq); static inline void gic_init(unsigned int nr, int start, void __iomem *dist , void __iomem *cpu) diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h index 2e3be16..7933eb1 100644 --- a/arch/arm/include/asm/smp.h +++ b/arch/arm/include/asm/smp.h @@ -79,6 +79,7 @@ extern void cpu_die(void); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); +extern void arch_send_wakeup_ipi(int cpu); struct smp_operations { #ifdef CONFIG_SMP diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index fbc8b26..0b6a926 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -426,6 +426,11 @@ void arch_send_call_function_single_ipi(int cpu) smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE); } +void arch_send_wakeup_ipi(int cpu) +{ + smp_cross_call(cpumask_of(cpu), IPI_WAKEUP); +} + static const char *ipi_types[NR_IPI] = { #define S(x,s) [x] = s S(IPI_WAKEUP, "CPU wakeup interrupts"), diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c index f93d820..41ee539 100644 --- a/arch/arm/mach-exynos/platsmp.c +++ b/arch/arm/mach-exynos/platsmp.c @@ -134,7 +134,7 @@ static int __cpuinit exynos_boot_secondary(unsigned int cpu, struct task_struct __raw_writel(virt_to_phys(exynos4_secondary_startup), CPU1_BOOT_REG); - gic_raise_softirq(cpumask_of(cpu), 0); + arch_send_wakeup_ipi(cpu); if (pen_release == -1) break; @@ -175,8 +175,6 @@ static void __init exynos_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init exynos_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c index fa9560e..c45fc34 100644 --- a/arch/arm/mach-highbank/platsmp.c +++ b/arch/arm/mach-highbank/platsmp.c @@ -32,7 +32,7 @@ static void __cpuinit highbank_secondary_init(unsigned int cpu) static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle) { - gic_raise_softirq(cpumask_of(cpu), 0); + arch_send_wakeup_ipi(cpu); return 0; } @@ -57,8 +57,6 @@ static void __init highbank_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init highbank_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c index 2ac43e1..e7bde01 100644 --- a/arch/arm/mach-imx/platsmp.c +++ b/arch/arm/mach-imx/platsmp.c @@ -70,8 +70,6 @@ static void __init imx_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } void imx_smp_prepare(void) diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-msm/platsmp.c index 7ed69b69..c0eb0eb 100644 --- a/arch/arm/mach-msm/platsmp.c +++ b/arch/arm/mach-msm/platsmp.c @@ -115,7 +115,7 @@ static int __cpuinit msm_boot_secondary(unsigned int cpu, struct task_struct *id * the boot monitor to read the system wide flags register, * and branch to the address found there. */ - gic_raise_softirq(cpumask_of(cpu), 0); + arch_send_wakeup_ipi(cpu); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { @@ -153,8 +153,6 @@ static void __init msm_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init msm_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c index 4d05fa8..e5f57fc 100644 --- a/arch/arm/mach-omap2/omap-smp.c +++ b/arch/arm/mach-omap2/omap-smp.c @@ -125,7 +125,7 @@ static int __cpuinit omap4_boot_secondary(unsigned int cpu, struct task_struct * booted = true; } - gic_raise_softirq(cpumask_of(cpu), 0); + arch_send_wakeup_ipi(cpu); /* * Now the secondary core is starting up let it run its @@ -192,8 +192,6 @@ static void __init omap4_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init omap4_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c index 300f706..c9414d1 100644 --- a/arch/arm/mach-realview/platsmp.c +++ b/arch/arm/mach-realview/platsmp.c @@ -59,8 +59,6 @@ static void __init realview_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init realview_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c index ed8d235..d393c52 100644 --- a/arch/arm/mach-shmobile/platsmp.c +++ b/arch/arm/mach-shmobile/platsmp.c @@ -26,6 +26,4 @@ void __init shmobile_smp_init_cpus(unsigned int ncores) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } diff --git a/arch/arm/mach-shmobile/smp-emev2.c b/arch/arm/mach-shmobile/smp-emev2.c index f674562..e3880af 100644 --- a/arch/arm/mach-shmobile/smp-emev2.c +++ b/arch/arm/mach-shmobile/smp-emev2.c @@ -100,7 +100,7 @@ static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct * /* Tell ROM loader about our vector (in headsmp.S) */ emev2_set_boot_vector(__pa(shmobile_secondary_vector)); - gic_raise_softirq(cpumask_of(cpu), 0); + arch_send_wakeup_ipi(cpu); return 0; } diff --git a/arch/arm/mach-spear13xx/platsmp.c b/arch/arm/mach-spear13xx/platsmp.c index 2eaa3fa..27e3f69 100644 --- a/arch/arm/mach-spear13xx/platsmp.c +++ b/arch/arm/mach-spear13xx/platsmp.c @@ -104,8 +104,6 @@ static void __init spear13xx_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init spear13xx_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 81cb265..076c140 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -160,8 +160,6 @@ static void __init tegra_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init tegra_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c index 3db7782..774e527 100644 --- a/arch/arm/mach-ux500/platsmp.c +++ b/arch/arm/mach-ux500/platsmp.c @@ -155,8 +155,6 @@ static void __init ux500_smp_init_cpus(void) for (i = 0; i < ncores; i++) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init ux500_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c index 4f471fa..3585449 100644 --- a/arch/arm/mach-vexpress/ct-ca9x4.c +++ b/arch/arm/mach-vexpress/ct-ca9x4.c @@ -195,8 +195,6 @@ static void __init ct_ca9x4_init_cpu_map(void) for (i = 0; i < ncores; ++i) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init ct_ca9x4_smp_enable(unsigned int max_cpus) diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c index 7db27c8..cd98c04 100644 --- a/arch/arm/mach-vexpress/platsmp.c +++ b/arch/arm/mach-vexpress/platsmp.c @@ -127,8 +127,6 @@ static void __init vexpress_dt_smp_init_cpus(void) for (i = 0; i < ncores; ++i) set_cpu_possible(i, true); - - set_smp_cross_call(gic_raise_softirq); } static void __init vexpress_dt_smp_prepare_cpus(unsigned int max_cpus) diff --git a/arch/arm/plat-versatile/platsmp.c b/arch/arm/plat-versatile/platsmp.c index 04ca493..dcca151 100644 --- a/arch/arm/plat-versatile/platsmp.c +++ b/arch/arm/plat-versatile/platsmp.c @@ -79,7 +79,7 @@ int __cpuinit versatile_boot_secondary(unsigned int cpu, struct task_struct *idl * the boot monitor to read the system wide flags register, * and branch to the address found there. */ - gic_raise_softirq(cpumask_of(cpu), 0); + arch_send_wakeup_ipi(cpu); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) {