From patchwork Tue Apr 1 08:03:48 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haojian Zhuang X-Patchwork-Id: 3919311 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 2EAD59F2B6 for ; Tue, 1 Apr 2014 08:08:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0CFCB203AF for ; Tue, 1 Apr 2014 08:08:26 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 891E920380 for ; Tue, 1 Apr 2014 08:08:24 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WUthy-0001FY-1C; Tue, 01 Apr 2014 08:06:11 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WUthK-0002AT-9s; Tue, 01 Apr 2014 08:05:30 +0000 Received: from mail-pd0-f177.google.com ([209.85.192.177]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WUthG-00027m-Bd for linux-arm-kernel@lists.infradead.org; Tue, 01 Apr 2014 08:05:27 +0000 Received: by mail-pd0-f177.google.com with SMTP id y10so9161601pdj.22 for ; Tue, 01 Apr 2014 01:05:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=KyJ3ZENo6hpTHReSoZh40ddwEfwieL381dIatwPKc2M=; b=arMJ1CQ/WkKyn0v36oZWtrk2loVzrgwsC426FUIMVRTADGtPomkZTfxs4NfHyWVBFu ZYloQfAsab7ATY4iRlsu2JqPt347nZU49mHbenA10c/Po9qDa+H5pym6RlqopRbnocaL HV25PJls+qvO9EXb6sMIkXbRJpsruKs7J+TynLt4fxlZaLyKiOpJpg5eLIzTorUdXgtv QZXR82B37z4R8rxX4ZKUM57fMMepx5TkGvRHvxKyf3g1mbokVo7oaotuSNYVYlAoBk9O /GUnLUoG8aU4p+IRb4fvEPBqmd+qO5wGtb4CV/ELhf45uJZb4jdwIbJ8kYwaVEhPdNHo JBYg== X-Gm-Message-State: ALoCoQkLu0+ZemMSx+kQQd4Y07ewpidQYjurH4aL2hfUmM77TwLGjECq3KA/K5XOKVaHfA1woQhT X-Received: by 10.66.232.40 with SMTP id tl8mr8532190pac.137.1396339503808; Tue, 01 Apr 2014 01:05:03 -0700 (PDT) Received: from localhost.localdomain ([140.206.182.114]) by mx.google.com with ESMTPSA id yo9sm52327508pab.16.2014.04.01.01.04.54 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 01 Apr 2014 01:05:03 -0700 (PDT) From: Haojian Zhuang To: tglx@linutronix.de, linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org, arnd@arndb.de, olof@lixom.net, khilman@kernel.org, xuwei5@hisilicon.com Subject: [PATCH v1 6/8] ARM: hisi: add hip04 SoC support Date: Tue, 1 Apr 2014 16:03:48 +0800 Message-Id: <1396339430-21084-7-git-send-email-haojian.zhuang@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1396339430-21084-1-git-send-email-haojian.zhuang@linaro.org> References: <1396339430-21084-1-git-send-email-haojian.zhuang@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140401_040526_534428_2D3325A2 X-CRM114-Status: GOOD ( 20.20 ) X-Spam-Score: -1.9 (-) Cc: Haojian Zhuang X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hisilicon Hi3xxx is based on Cortex A9 Core. Now HiP04 SoC is based on Cortex A15 Core. And HiP04 supports LPAE to support large memory. Signed-off-by: Haojian Zhuang --- arch/arm/Kconfig | 2 +- arch/arm/mach-hisi/Kconfig | 10 ++ arch/arm/mach-hisi/core.h | 6 + arch/arm/mach-hisi/hisilicon.c | 17 +++ arch/arm/mach-hisi/platsmp.c | 257 +++++++++++++++++++++++++++++++++++++++++ 5 files changed, 291 insertions(+), 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a48712e..3f2e973 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1107,7 +1107,7 @@ source arch/arm/mm/Kconfig config ARM_NR_BANKS int - default 16 if ARCH_EP93XX + default 16 if ARCH_EP93XX || ARCH_HIP04 default 8 config IWMMXT diff --git a/arch/arm/mach-hisi/Kconfig b/arch/arm/mach-hisi/Kconfig index da16efd..707abfe 100644 --- a/arch/arm/mach-hisi/Kconfig +++ b/arch/arm/mach-hisi/Kconfig @@ -19,6 +19,16 @@ config ARCH_HI3xxx help Support for Hisilicon Hi36xx/Hi37xx processor family +config ARCH_HIP04 + bool "Hisilicon HiP04 Cortex A15 family" if ARCH_MULTI_V7 + select ARM_LPAE + select HAVE_ARM_ARCH_TIMER + select HAVE_SMP + select MCPM + select SMP + help + Support for Hisilicon HiP04 processor family + endmenu endif diff --git a/arch/arm/mach-hisi/core.h b/arch/arm/mach-hisi/core.h index af23ec2..e008c7a 100644 --- a/arch/arm/mach-hisi/core.h +++ b/arch/arm/mach-hisi/core.h @@ -12,4 +12,10 @@ extern void hi3xxx_cpu_die(unsigned int cpu); extern int hi3xxx_cpu_kill(unsigned int cpu); extern void hi3xxx_set_cpu(int cpu, bool enable); +#define HIP04_BOOTWRAPPER_PHYS 0x10c00000 +#define HIP04_BOOTWRAPPER_MAGIC 0xa5a5a5a5 +#define HIP04_BOOTWRAPPER_SIZE 0x00010000 + +extern bool __init hip04_smp_init_ops(void); + #endif diff --git a/arch/arm/mach-hisi/hisilicon.c b/arch/arm/mach-hisi/hisilicon.c index 741faf3..ca277de 100644 --- a/arch/arm/mach-hisi/hisilicon.c +++ b/arch/arm/mach-hisi/hisilicon.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -88,3 +89,19 @@ DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)") .smp = smp_ops(hi3xxx_smp_ops), .restart = hi3xxx_restart, MACHINE_END + +static const char *hip04_compat[] __initconst = { + "hisilicon,hip04-d01", + NULL, +}; + +static void __init hip04_reserve(void) +{ + memblock_reserve(HIP04_BOOTWRAPPER_PHYS, HIP04_BOOTWRAPPER_SIZE); +} + +DT_MACHINE_START(HIP04, "Hisilicon HiP04 (Flattened Device Tree)") + .dt_compat = hip04_compat, + .smp_init = smp_init_ops(hip04_smp_init_ops), + .reserve = hip04_reserve, +MACHINE_END diff --git a/arch/arm/mach-hisi/platsmp.c b/arch/arm/mach-hisi/platsmp.c index 471f1ee..a0082d7 100644 --- a/arch/arm/mach-hisi/platsmp.c +++ b/arch/arm/mach-hisi/platsmp.c @@ -9,9 +9,13 @@ */ #include #include +#include #include #include +#include +#include +#include #include #include @@ -87,3 +91,256 @@ struct smp_operations hi3xxx_smp_ops __initdata = { .cpu_kill = hi3xxx_cpu_kill, #endif }; + +/* bits definition in SC_CPU_RESET_REQ[x]/SC_CPU_RESET_DREQ[x] + * 1 -- unreset; 0 -- reset + */ +#define CORE_RESET_BIT(x) (1 << x) +#define NEON_RESET_BIT(x) (1 << (x + 4)) +#define CORE_DEBUG_RESET_BIT(x) (1 << (x + 9)) +#define CLUSTER_L2_RESET_BIT (1 << 8) +#define CLUSTER_DEBUG_RESET_BIT (1 << 13) + +/* + * bits definition in SC_CPU_RESET_STATUS[x] + * 1 -- reset status; 0 -- unreset status + */ +#define CORE_RESET_STATUS(x) (1 << x) +#define NEON_RESET_STATUS(x) (1 << (x + 4)) +#define CORE_DEBUG_RESET_STATUS(x) (1 << (x + 9)) +#define CLUSTER_L2_RESET_STATUS (1 << 8) +#define CLUSTER_DEBUG_RESET_STATUS (1 << 13) +#define CORE_WFI_STATUS(x) (1 << (x + 16)) +#define CORE_WFE_STATUS(x) (1 << (x + 20)) +#define CORE_DEBUG_ACK(x) (1 << (x + 24)) + +#define SC_CPU_RESET_REQ(x) (0x520 + (x << 3)) /* reset */ +#define SC_CPU_RESET_DREQ(x) (0x524 + (x << 3)) /* unreset */ +#define SC_CPU_RESET_STATUS(x) (0x1520 + (x << 3)) + +#define FAB_SF_MODE 0x0c +#define FAB_SF_INVLD 0x10 + +/* bits definition in FB_SF_INVLD */ +#define FB_SF_INVLD_START (1 << 8) + +#define HIP04_MAX_CLUSTERS 4 +#define HIP04_MAX_CPUS_PER_CLUSTER 4 + +static void __iomem *relocation = NULL, *sysctrl = NULL, *fabric = NULL; +static int hip04_cpu_table[HIP04_MAX_CLUSTERS][HIP04_MAX_CPUS_PER_CLUSTER]; +static DEFINE_SPINLOCK(boot_lock); + +static bool hip04_cluster_down(unsigned int cluster) +{ + int i; + + for (i = 0; i < HIP04_MAX_CPUS_PER_CLUSTER; i++) + if (hip04_cpu_table[cluster][i]) + return false; + return true; +} + +static void hip04_set_snoop_filter(unsigned int cluster, unsigned int on) +{ + unsigned long data; + + if (!fabric) + return; + data = readl_relaxed(fabric + FAB_SF_MODE); + if (on) + data |= 1 << cluster; + else + data &= ~(1 << cluster); + writel_relaxed(data, fabric + FAB_SF_MODE); + while (1) { + if (data == readl_relaxed(fabric + FAB_SF_MODE)) + break; + } +} + +static int hip04_mcpm_power_up(unsigned int cpu, unsigned int cluster) +{ + unsigned long data, mask; + + if (!relocation || !sysctrl) + return -ENODEV; + if (cluster >= HIP04_MAX_CLUSTERS || cpu >= HIP04_MAX_CPUS_PER_CLUSTER) + return -EINVAL; + + spin_lock(&boot_lock); + writel_relaxed(HIP04_BOOTWRAPPER_PHYS, relocation); + writel_relaxed(HIP04_BOOTWRAPPER_MAGIC, relocation + 4); + writel_relaxed(virt_to_phys(mcpm_entry_point), relocation + 8); + writel_relaxed(0, relocation + 12); + + if (hip04_cluster_down(cluster)) { + data = CLUSTER_L2_RESET_BIT | CLUSTER_DEBUG_RESET_BIT; + writel_relaxed(data, sysctrl + SC_CPU_RESET_DREQ(cluster)); + do { + mask = CLUSTER_L2_RESET_STATUS | \ + CLUSTER_DEBUG_RESET_STATUS; + data = readl_relaxed(sysctrl + \ + SC_CPU_RESET_STATUS(cluster)); + } while (data & mask); + hip04_set_snoop_filter(cluster, 1); + } + + hip04_cpu_table[cluster][cpu]++; + + data = CORE_RESET_BIT(cpu) | NEON_RESET_BIT(cpu) | \ + CORE_DEBUG_RESET_BIT(cpu); + writel_relaxed(data, sysctrl + SC_CPU_RESET_DREQ(cluster)); + spin_unlock(&boot_lock); + + return 0; +} + +static void hip04_mcpm_power_down(void) +{ + unsigned int mpidr, cpu, cluster; + unsigned int v; + + spin_lock(&boot_lock); + spin_unlock(&boot_lock); + + mpidr = read_cpuid_mpidr(); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + + local_irq_disable(); + gic_cpu_if_down(); + + __mcpm_cpu_down(cpu, cluster); + + asm volatile( + " mrc p15, 0, %0, c1, c0, 0\n" + " bic %0, %0, %1\n" + " mcr p15, 0, %0, c1, c0, 0\n" + : "=&r" (v) + : "Ir" (CR_C) + : "cc"); + + flush_cache_louis(); + + asm volatile( + /* + * Turn off coherency + */ + " mrc p15, 0, %0, c1, c0, 1\n" + " bic %0, %0, %1\n" + " mcr p15, 0, %0, c1, c0, 1\n" + : "=&r" (v) + : "Ir" (0x40) + : "cc"); + + isb(); + dsb(); +} + +static int hip04_mcpm_power_down_finish(unsigned int cpu, unsigned int cluster) +{ + int ret = -EBUSY; + + spin_lock(&boot_lock); + BUG_ON(__mcpm_cluster_state(cluster) != CLUSTER_UP); + __mcpm_cpu_going_down(cpu, cluster); + + hip04_cpu_table[cluster][cpu]--; + if (hip04_cpu_table[cluster][cpu]) { + pr_err("Cluster %d CPU%d is still running\n", cluster, cpu); + goto out; + } + ret = 0; +out: + spin_unlock(&boot_lock); + return ret; +} + +static void hip04_mcpm_powered_up(void) +{ + if (!relocation) + return; + spin_lock(&boot_lock); + writel_relaxed(0, relocation); + writel_relaxed(0, relocation + 4); + writel_relaxed(0, relocation + 8); + writel_relaxed(0, relocation + 12); + spin_unlock(&boot_lock); +} + +static const struct mcpm_platform_ops hip04_mcpm_ops = { + .power_up = hip04_mcpm_power_up, + .power_down = hip04_mcpm_power_down, + .power_down_finish = hip04_mcpm_power_down_finish, + .powered_up = hip04_mcpm_powered_up, +}; + +static bool __init hip04_cpu_table_init(void) +{ + unsigned int mpidr, cpu, cluster; + + mpidr = read_cpuid_mpidr(); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + + if (cluster >= HIP04_MAX_CLUSTERS || + cpu >= HIP04_MAX_CPUS_PER_CLUSTER) { + pr_err("%s: boot CPU is out of bound!\n", __func__); + return false; + } + hip04_set_snoop_filter(cluster, 1); + hip04_cpu_table[cluster][cpu] = 1; + return true; +} + +static int __init hip04_mcpm_init(void) +{ + struct device_node *np; + int ret = -ENODEV; + + np = of_find_compatible_node(NULL, NULL, "hisilicon,hip04-mcpm"); + if (!np) { + pr_err("failed to find hisilicon,hip04-mcpm node\n"); + goto err; + } + relocation = of_iomap(np, 0); + if (!relocation) { + pr_err("failed to get relocation space\n"); + ret = -ENOMEM; + goto err; + } + sysctrl = of_iomap(np, 1); + if (!sysctrl) { + pr_err("failed to get sysctrl base\n"); + ret = -ENOMEM; + goto err_sysctrl; + } + fabric = of_iomap(np, 2); + if (!fabric) { + pr_err("failed to get fabric base\n"); + ret = -ENOMEM; + goto err_fabric; + } + if (!hip04_cpu_table_init()) + return -EINVAL; + ret = mcpm_platform_register(&hip04_mcpm_ops); + if (!ret) { + mcpm_sync_init(NULL); + pr_info("HiP04 MCPM initialized\n"); + } + return ret; +err_fabric: + iounmap(sysctrl); +err_sysctrl: + iounmap(relocation); +err: + return ret; +} +early_initcall(hip04_mcpm_init); + +bool __init hip04_smp_init_ops(void) +{ + mcpm_smp_set_ops(); + return true; +}