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[2a00:1450:4010:c07::234]) by mx.google.com with ESMTPS id h7si5062660lbd.91.2015.11.25.03.04.41 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2015 03:04:41 -0800 (PST) Received-SPF: pass (google.com: domain of jens.wiklander@linaro.org designates 2a00:1450:4010:c07::234 as permitted sender) client-ip=2a00:1450:4010:c07::234; Authentication-Results: mx.google.com; spf=pass (google.com: domain of jens.wiklander@linaro.org designates 2a00:1450:4010:c07::234 as permitted sender) smtp.mailfrom=jens.wiklander@linaro.org; dkim=pass header.i=@linaro-org.20150623.gappssmtp.com Received: by lfdl133 with SMTP id l133so55666938lfd.2 for ; Wed, 25 Nov 2015 03:04:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=OyVykQxsblP9uKSnSWN7xVziA1Bo24XCk3J6FgYwqm8=; b=hifNcTfB5T6Wy+flpisABaSbHsyGaM0jT/V4KD5wG/Lvdoty6H+Tja8Qd9QZz9A14p Ba5ehf6OhnEF3hwmKZGNTYNpoJfx9ZOmuV/r8uJm5FvX07M3fjT8NNEXAi/hyjdHfkZI lNRvqM1R0aUsqwjoolUet1oFdlStUILKP/4Aqm1JkRFYW4ALq50e2Rpn6vhiRkwp1gly JLa+V/K2cHqNCQjl7BDOdQgWT8ojIqZXeAl2laEcsa9ocOqXNIuu67FNlp+2aDJup8XY y5OXgFo7gxiwjz9gQnjg/0+Z6ONVOKBzDoeA1kxcV072ubjgJzRX84JQ3Ea1hOcXR2Qc Dg1A== 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=OyVykQxsblP9uKSnSWN7xVziA1Bo24XCk3J6FgYwqm8=; b=m4TNIJzHBj3eXx/GDQAemqIYIHcrfgU5VTsYPWzIuprfCSF8muCzcnn69ApEOtcdEg prPcXUfO+Bllu3Y7OlaggFYOhhOzaJnH4TCjUAa4hXI/Z/UhOKQs2RjRKdeBme7Si8lO jRa/DUBqDpiPKMpTEQtOi3jCScm5guID0YfCBb7E651TB1+yBpKogecRaTvCL8cz84ob dOq4NUJYVIgKYMJ7SxgtP68trdrM0w6qWrgMW/Ff7Wtutrz3SozKvKt/sXfU9LpJcwPD cLfoV9fOpbK/wMEREjucXKme7bpUJnIYOw69T10P27kQUHcG0wGZI5Us+MHmf84X0KkT B2bw== X-Gm-Message-State: ALoCoQkUfbADfsjoYJZVUkE3YU/Pidgeh95j7u5r05noBCL59OLF7IQ31+Qqv0VRNlP4ChvwPfZL X-Received: by 10.25.159.206 with SMTP id i197mr10678861lfe.89.1448449480858; Wed, 25 Nov 2015 03:04:40 -0800 (PST) Return-Path: Received: from ermac.ideon.se ([85.235.10.227]) by smtp.gmail.com with ESMTPSA id lc3sm3222630lbc.3.2015.11.25.03.04.39 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 25 Nov 2015 03:04:39 -0800 (PST) From: Jens Wiklander To: linux-arm-kernel@lists.infradead.org, Arnd Bergmann , Mark Rutland , Will Deacon , Catalin Marinas , Russell King Cc: Lars Persson , Jens Wiklander Subject: [PATCH v3 4/4] drivers: psci: replace psci firmware calls Date: Wed, 25 Nov 2015 12:04:21 +0100 Message-Id: <1448449461-5043-5-git-send-email-jens.wiklander@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1448449461-5043-1-git-send-email-jens.wiklander@linaro.org> References: <1448449461-5043-1-git-send-email-jens.wiklander@linaro.org> Switch to use a generic interface for issuing SMC/HVC based on ARM SMC Calling Convention. Removes now the now unused psci-call.S. Signed-off-by: Jens Wiklander Acked-by: Will Deacon --- arch/arm/kernel/Makefile | 1 - arch/arm/kernel/psci-call.S | 31 ------------------------------- arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/psci-call.S | 28 ---------------------------- drivers/firmware/psci.c | 23 +++++++++++++++++++++-- 5 files changed, 22 insertions(+), 63 deletions(-) delete mode 100644 arch/arm/kernel/psci-call.S delete mode 100644 arch/arm64/kernel/psci-call.S -- 1.9.1 diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index d2d0042..80856de 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -88,7 +88,6 @@ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-$(CONFIG_ARM_VIRT_EXT) += hyp-stub.o ifeq ($(CONFIG_ARM_PSCI),y) -obj-y += psci-call.o obj-$(CONFIG_SMP) += psci_smp.o endif diff --git a/arch/arm/kernel/psci-call.S b/arch/arm/kernel/psci-call.S deleted file mode 100644 index a78e9e1..0000000 --- a/arch/arm/kernel/psci-call.S +++ /dev/null @@ -1,31 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * Copyright (C) 2015 ARM Limited - * - * Author: Mark Rutland - */ - -#include - -#include -#include - -/* int __invoke_psci_fn_hvc(u32 function_id, u32 arg0, u32 arg1, u32 arg2) */ -ENTRY(__invoke_psci_fn_hvc) - __HVC(0) - bx lr -ENDPROC(__invoke_psci_fn_hvc) - -/* int __invoke_psci_fn_smc(u32 function_id, u32 arg0, u32 arg1, u32 arg2) */ -ENTRY(__invoke_psci_fn_smc) - __SMC(0) - bx lr -ENDPROC(__invoke_psci_fn_smc) diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 16d24a4..02893fa 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -15,7 +15,7 @@ CFLAGS_REMOVE_return_address.o = -pg arm64-obj-y := debug-monitors.o entry.o irq.o fpsimd.o \ entry-fpsimd.o process.o ptrace.o setup.o signal.o \ sys.o stacktrace.o time.o traps.o io.o vdso.o \ - hyp-stub.o psci.o psci-call.o cpu_ops.o insn.o \ + hyp-stub.o psci.o cpu_ops.o insn.o \ return_address.o cpuinfo.o cpu_errata.o \ cpufeature.o alternative.o cacheinfo.o \ smp.o smp_spin_table.o topology.o smccc-call.o diff --git a/arch/arm64/kernel/psci-call.S b/arch/arm64/kernel/psci-call.S deleted file mode 100644 index cf83e61..0000000 --- a/arch/arm64/kernel/psci-call.S +++ /dev/null @@ -1,28 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * Copyright (C) 2015 ARM Limited - * - * Author: Will Deacon - */ - -#include - -/* int __invoke_psci_fn_hvc(u64 function_id, u64 arg0, u64 arg1, u64 arg2) */ -ENTRY(__invoke_psci_fn_hvc) - hvc #0 - ret -ENDPROC(__invoke_psci_fn_hvc) - -/* int __invoke_psci_fn_smc(u64 function_id, u64 arg0, u64 arg1, u64 arg2) */ -ENTRY(__invoke_psci_fn_smc) - smc #0 - ret -ENDPROC(__invoke_psci_fn_smc) diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index 42700f0..9c55d11 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -56,8 +57,6 @@ struct psci_operations psci_ops; typedef unsigned long (psci_fn)(unsigned long, unsigned long, unsigned long, unsigned long); -asmlinkage psci_fn __invoke_psci_fn_hvc; -asmlinkage psci_fn __invoke_psci_fn_smc; static psci_fn *invoke_psci_fn; enum psci_function { @@ -70,6 +69,26 @@ enum psci_function { static u32 psci_function_id[PSCI_FN_MAX]; +static unsigned long __invoke_psci_fn_hvc(unsigned long function_id, + unsigned long arg0, unsigned long arg1, + unsigned long arg2) +{ + struct arm_smccc_res res; + + arm_smccc_hvc(function_id, arg0, arg1, arg2, 0, 0, 0, 0, &res); + return res.a0; +} + +static unsigned long __invoke_psci_fn_smc(unsigned long function_id, + unsigned long arg0, unsigned long arg1, + unsigned long arg2) +{ + struct arm_smccc_res res; + + arm_smccc_smc(function_id, arg0, arg1, arg2, 0, 0, 0, 0, &res); + return res.a0; +} + static int psci_to_linux_errno(int errno) { switch (errno) {