From patchwork Wed Apr 25 23:31:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 10364509 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3A1736038F for ; Thu, 26 Apr 2018 00:35:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 26B2E28F96 for ; Thu, 26 Apr 2018 00:35:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 173682901F; Thu, 26 Apr 2018 00:35:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6C4BA28F96 for ; Thu, 26 Apr 2018 00:35:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=1l1j4oSQbbDonzIJIgYHgzPiJeZp/HptlaThLJqWCDE=; b=max0lZoYiwcRe2nbc3bcb/u+9E iC1pmIBX9Ty6szIJn6nl/j9WoI5UQrePruuvePY+4brzPYkEUouy0OZnNjmiUI6i01MGXOgmbBUKM XUP6ZLqFtIRAd/n8z5oTTHofLZp1+d9dsibjW0WOFKE4jft8wVhKnwLfy/caSSlFhebLk/7mf2/Uz JdFn+zoDR+q5esCchczgI351gHnsB5XBYUQ3huVznz1L4nrXUQ8z3LSYuDU4xTbH1sJoEsdl0e+wj qW8k/B1x1zP5dsCRsTR96sptUpLSdxckTjRSYEnHOHfq9wv2KRf2ujddJYFmEoEpuEI62vH17VCiG bhMAV4Zw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fBUsc-0005WN-UZ; Thu, 26 Apr 2018 00:35:23 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fBUk4-00085n-7k; Thu, 26 Apr 2018 00:26:37 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0B6CD16BA; Wed, 25 Apr 2018 17:26:18 -0700 (PDT) Received: from beelzebub.austin.arm.com (beelzebub.austin.arm.com [10.118.12.119]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id ED98C3F590; Wed, 25 Apr 2018 17:26:16 -0700 (PDT) From: Jeremy Linton To: linux-acpi@vger.kernel.org Subject: [PATCH v8 07/13] drivers: base cacheinfo: Add support for ACPI based firmware tables Date: Wed, 25 Apr 2018 18:31:15 -0500 Message-Id: <20180425233121.13270-8-jeremy.linton@arm.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180425233121.13270-1-jeremy.linton@arm.com> References: <20180425233121.13270-1-jeremy.linton@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180425_172632_530135_D4C20790 X-CRM114-Status: GOOD ( 13.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark.Rutland@arm.com, austinwc@codeaurora.org, tnowicki@caviumnetworks.com, Catalin.Marinas@arm.com, palmer@sifive.com, Will.Deacon@arm.com, linux-riscv@lists.infradead.org, Morten.Rasmussen@arm.com, vkilari@codeaurora.org, Lorenzo.Pieralisi@arm.com, ahs3@redhat.com, lenb@kernel.org, john.garry@huawei.com, wangxiongfeng2@huawei.com, jhugo@qti.qualcomm.com, Dietmar.Eggemann@arm.com, linux-arm-kernel@lists.infradead.org, ard.biesheuvel@linaro.org, gregkh@linuxfoundation.org, rjw@rjwysocki.net, linux-kernel@vger.kernel.org, Jeremy Linton , timur@qti.qualcomm.com, hanjun.guo@linaro.org, Sudeep.Holla@arm.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Call ACPI cache parsing routines from base cacheinfo code if ACPI is enable. Also stub out cache_setup_acpi() so that individual architectures can enable ACPI topology parsing. Signed-off-by: Jeremy Linton Acked-by: Sudeep Holla --- drivers/base/cacheinfo.c | 14 ++++++++++---- include/linux/cacheinfo.h | 10 ++++++++++ 2 files changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c index 597aacb233fc..2880e2ab01f5 100644 --- a/drivers/base/cacheinfo.c +++ b/drivers/base/cacheinfo.c @@ -206,7 +206,7 @@ static inline bool cache_leaves_are_shared(struct cacheinfo *this_leaf, struct cacheinfo *sib_leaf) { /* - * For non-DT systems, assume unique level 1 cache, system-wide + * For non-DT/ACPI systems, assume unique level 1 caches, system-wide * shared caches for all other levels. This will be used only if * arch specific code has not populated shared_cpu_map */ @@ -214,6 +214,11 @@ static inline bool cache_leaves_are_shared(struct cacheinfo *this_leaf, } #endif +int __weak cache_setup_acpi(unsigned int cpu) +{ + return -ENOTSUPP; +} + static int cache_shared_cpu_map_setup(unsigned int cpu) { struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu); @@ -227,8 +232,8 @@ static int cache_shared_cpu_map_setup(unsigned int cpu) if (of_have_populated_dt()) ret = cache_setup_of_node(cpu); else if (!acpi_disabled) - /* No cache property/hierarchy support yet in ACPI */ - ret = -ENOTSUPP; + ret = cache_setup_acpi(cpu); + if (ret) return ret; @@ -279,7 +284,8 @@ static void cache_shared_cpu_map_remove(unsigned int cpu) cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map); cpumask_clear_cpu(sibling, &this_leaf->shared_cpu_map); } - of_node_put(this_leaf->fw_token); + if (of_have_populated_dt()) + of_node_put(this_leaf->fw_token); } } diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h index 0c6f658054d2..70ef44669fa3 100644 --- a/include/linux/cacheinfo.h +++ b/include/linux/cacheinfo.h @@ -97,6 +97,16 @@ int func(unsigned int cpu) \ struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu); int init_cache_level(unsigned int cpu); int populate_cache_leaves(unsigned int cpu); +int cache_setup_acpi(unsigned int cpu); +#ifndef CONFIG_ACPI +static inline int acpi_find_last_cache_level(unsigned int cpu) +{ + /* ACPI kernels should be built with PPTT support */ + return 0; +} +#else +int acpi_find_last_cache_level(unsigned int cpu); +#endif const struct attribute_group *cache_get_priv_group(struct cacheinfo *this_leaf);