From patchwork Wed Dec 2 09:47:06 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Wiklander X-Patchwork-Id: 7744021 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 23B009F39D for ; Wed, 2 Dec 2015 09:50:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0869A2060A for ; Wed, 2 Dec 2015 09:50:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EF505204F6 for ; Wed, 2 Dec 2015 09:50:35 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a441q-0003et-7q; Wed, 02 Dec 2015 09:48:50 +0000 Received: from mail-wm0-x236.google.com ([2a00:1450:400c:c09::236]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1a441A-0003Lc-Re for linux-arm-kernel@lists.infradead.org; Wed, 02 Dec 2015 09:48:12 +0000 Received: by wmec201 with SMTP id c201so244420442wme.0 for ; Wed, 02 Dec 2015 01:47:48 -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=u2s1LPVsdVWTSe/SWuA12/SHIikXvWrm4iDVtm3fusE=; b=q7TeQcmTglEPA++vrZGfd5L3qmEL5KlL+0/MKMS1OaJlnMXqXIEP8y8DGsR9vkjARF 7uc77yDW1dCfA/1vXgL47b+xgikidAQYkQEphWLDThea0ZRYM2rW8NaaF48TLkpazOlV twHIIrr3VYbKKVsHQFfpuiBPXesta4KUqT2NDLBo4+M6XmIWXnoxzV6J0rNfkHZktIep Uz2jH+SXlj95Vf8NCPvnN0S9NP379JV3vuoV6R90z7Ugaw1HlJcF5ETjOmN2RJ4fKD0l EzqvKJ7nCPjDGvXFL5pNJFbebwj25bEIrSacOOFigqq360T6Bw+4rAWVOR9c9gE1J3aj qpLA== 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=u2s1LPVsdVWTSe/SWuA12/SHIikXvWrm4iDVtm3fusE=; b=RKOyhXZyly63vPcMXC9FJwEBybKdhcw58rl26kZPwobZhmvVsOHMrR8V+jCNFNJTTY qq8H8tANooUoOle1nN/x0lMhNoWL9HYpUngvaOKlLWXq3K+4dj1juRv+NoxzGLf3hnAc wVxCyq16gddn3HUlGaOkqnJUWkPJ5PwPdX51R2i/drkoaD7IvylZIZFxGf593w9/o86f H/OkfV+U+eQ8grBqh2yau9y+AIVgLSF5MUmuceYznnwJaUgUf/0grZYFsyPErX0SiHCe I/NqByfnWTL1vCjds0NeJSzVAjjFqTwVEEMFFMw43gU+/dTpisN+jI9oRGwTG5slHOTl KCGA== X-Gm-Message-State: ALoCoQmzVRRjNcv1YIS5lZrFROklQ/Pgpl5t+FDOvp1EoEt3ZbG2nFYiCrAc7B+AKJ75AIyN4vCk X-Received: by 10.194.19.133 with SMTP id f5mr3771072wje.48.1449049668539; Wed, 02 Dec 2015 01:47:48 -0800 (PST) Received: from ermac.urgonet (h-84-45.a175.priv.bahnhof.se. [79.136.84.45]) by smtp.gmail.com with ESMTPSA id bh6sm1987805wjb.0.2015.12.02.01.47.47 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 02 Dec 2015 01:47:47 -0800 (PST) From: Jens Wiklander To: linux-arm-kernel@lists.infradead.org, Arnd Bergmann , Mark Rutland , Will Deacon , Catalin Marinas , Russell King , Lorenzo Pieralisi Subject: [PATCH v4 4/4] drivers: psci: replace psci firmware calls Date: Wed, 2 Dec 2015 10:47:06 +0100 Message-Id: <1449049626-13991-5-git-send-email-jens.wiklander@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1449049626-13991-1-git-send-email-jens.wiklander@linaro.org> References: <1449049626-13991-1-git-send-email-jens.wiklander@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151202_014809_209501_7A9F58A0 X-CRM114-Status: GOOD ( 15.28 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jens Wiklander , Lars Persson 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=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 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 Reviewed-by: Mark Rutland Tested-by: Mark Rutland Acked-by: Lorenzo Pieralisi Tested-by: Lorenzo Pieralisi --- 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 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 0170bea..27bf1e5 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -14,7 +14,7 @@ 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 d24f35d..f25cd79 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -13,6 +13,7 @@ #define pr_fmt(fmt) "psci: " fmt +#include #include #include #include @@ -58,8 +59,6 @@ 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 { @@ -107,6 +106,26 @@ bool psci_power_state_is_valid(u32 state) return !(state & ~valid_mask); } +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) {