From patchwork Mon Feb 15 12:16:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 12088043 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 540ECC433E0 for ; Mon, 15 Feb 2021 12:19:57 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D80BA60200 for ; Mon, 15 Feb 2021 12:19:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D80BA60200 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=marcan.st Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=TbHGrL6wDa/9ELS2AWi2p/v/QTvzgw/PaFcJnQhlwis=; b=mx7wIwVkbpb5/GU7Tg7TcLAGy +gGzVk0RrzG3szKMDulJNlOv72zqXDvky4HVaLJe6piNXtFMZsSxbk0QTQunpNDGSvK1Rx3mE0T5B IptQ7Ybfk4x4lEUup+uXjnpRX8F33TITHAe3PsdTckw9SVK9FUn12YplIHKyFT/Tr1miwzvoEuxNZ yPOEvt2LdOGIOOo+gdXzjvNCqENLZDcPyT4jrBkUdKiCvL0VH6y0nS86/cAh9qDc9q2DyRbtSmzH6 btc1gohWpCHl9VDYwz0hg2gySDtvZiK2ae1wruC9zGMfrj24KqalenpsmZq/Go8zhoKwEdIdBrAkV wvMkjy1dQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lBcpU-0005En-H4; Mon, 15 Feb 2021 12:18:16 +0000 Received: from marcansoft.com ([212.63.210.85] helo=mail.marcansoft.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lBcpN-0005C4-9n for linux-arm-kernel@lists.infradead.org; Mon, 15 Feb 2021 12:18:10 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hector@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 1EE6D4249C; Mon, 15 Feb 2021 12:18:03 +0000 (UTC) From: Hector Martin To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 06/25] arm64: arch_timer: implement support for interrupt-names Date: Mon, 15 Feb 2021 21:16:54 +0900 Message-Id: <20210215121713.57687-7-marcan@marcan.st> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210215121713.57687-1-marcan@marcan.st> References: <20210215121713.57687-1-marcan@marcan.st> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210215_071809_506101_3A0E5D4D X-CRM114-Status: GOOD ( 17.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Arnd Bergmann , Rob Herring , Tony Lindgren , Marc Zyngier , Linus Walleij , Hector Martin , linux-kernel@vger.kernel.org, Krzysztof Kozlowski , devicetree@vger.kernel.org, Alexander Graf , Olof Johansson , Mohamed Mediouni , Stan Skowronek , Will Deacon , Mark Kettenis Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This allows the devicetree to correctly represent the available set of timers, which varies from device to device, without the need for fake dummy interrupts for unavailable slots. Also add the hyp-virt timer/PPI, which is not currently used, but worth representing. Signed-off-by: Hector Martin Reviewed-by: Tony Lindgren --- drivers/clocksource/arm_arch_timer.c | 25 +++++++++++++++++++++---- include/clocksource/arm_arch_timer.h | 1 + 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index d0177824c518..0e87b6d1ce97 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -63,6 +63,14 @@ struct arch_timer { static u32 arch_timer_rate; static int arch_timer_ppi[ARCH_TIMER_MAX_TIMER_PPI]; +static const char *arch_timer_ppi_names[ARCH_TIMER_MAX_TIMER_PPI] = { + "phys-secure", + "phys", + "virt", + "hyp-phys", + "hyp-virt", +}; + static struct clock_event_device __percpu *arch_timer_evt; static enum arch_timer_ppi_nr arch_timer_uses_ppi = ARCH_TIMER_VIRT_PPI; @@ -1280,17 +1288,26 @@ static void __init arch_timer_populate_kvm_info(void) static int __init arch_timer_of_init(struct device_node *np) { - int i, ret; + int i, irq, ret; u32 rate; + bool has_names; if (arch_timers_present & ARCH_TIMER_TYPE_CP15) { pr_warn("multiple nodes in dt, skipping\n"); return 0; } - arch_timers_present |= ARCH_TIMER_TYPE_CP15; - for (i = ARCH_TIMER_PHYS_SECURE_PPI; i < ARCH_TIMER_MAX_TIMER_PPI; i++) - arch_timer_ppi[i] = irq_of_parse_and_map(np, i); + + has_names = of_property_read_bool(np, "interrupt-names"); + + for (i = ARCH_TIMER_PHYS_SECURE_PPI; i < ARCH_TIMER_MAX_TIMER_PPI; i++) { + if (has_names) + irq = of_irq_get_byname(np, arch_timer_ppi_names[i]); + else + irq = of_irq_get(np, i); + if (irq > 0) + arch_timer_ppi[i] = irq; + } arch_timer_populate_kvm_info(); diff --git a/include/clocksource/arm_arch_timer.h b/include/clocksource/arm_arch_timer.h index 1d68d5613dae..73c7139c866f 100644 --- a/include/clocksource/arm_arch_timer.h +++ b/include/clocksource/arm_arch_timer.h @@ -32,6 +32,7 @@ enum arch_timer_ppi_nr { ARCH_TIMER_PHYS_NONSECURE_PPI, ARCH_TIMER_VIRT_PPI, ARCH_TIMER_HYP_PPI, + ARCH_TIMER_HYP_VIRT_PPI, ARCH_TIMER_MAX_TIMER_PPI };