From patchwork Mon Jun 26 11:19:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 13292681 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A6711EB64DD for ; Mon, 26 Jun 2023 11:21:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; 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=Os7S0PAM3ycmJUv87da3GLlRRkx5ZnLMZrlXliVLpyE=; b=plrTT1eBvW2OYx rkRuQ0loBD259FmLlKRzeiT64hkAmcI8p1xA1NaNR8a1Rlu6149akprRXmDbjC4sHdQezvZ7cvPur unycuaM/pO2UldAWsl1iMJDPGko88bu9xuPoKKPhgPV5Naa4KU6C1S7rvdwsDU0w8TEFRUZCzt2qo Lu8eX8iookkA7myLx8sjqRR5OKDqa2zPmcPWpaRGPmRbgCRJSXGm6ryTbmRTJcU96YIVbW15Xi9Rh VM+RBa83DqyAC9nvJwYhlJUkTU2M7ay25PJsjwWNhoziLAPuJahHtXhaOQNw4ockOO0vfFqwanhHE 7qmW85WxgqmICJ8HNV/w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qDkHC-00A449-2d; Mon, 26 Jun 2023 11:20:58 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qDkH8-00A41i-1Q for linux-riscv@lists.infradead.org; Mon, 26 Jun 2023 11:20:56 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1687778454; x=1719314454; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GzlNWSg0xDPHyhC9BUJXzvFuSqFJWq3a7gm62UBaiWE=; b=Liscz7bOs/VaRxL52umXtJjAITgui9exdh7VrE7lDtQnaJKmyxyzkIqs uEB+EL0iUa8QA7nhsLRoVGQLpXRaJZ5rhTAR9qnaD9RhsNV1IfNFDrsFZ 1zyfL1+v3rj/IQ2DydKmIHoBBY2V0NfFq8Wq6oBYTHLltx2FiljyGHhgK 4mCMB/biS08S50TwyL/74PReKxrBnECqBy6f9w9Z7ReXlK9hPVBDg9aJy /uvDSfEE56DOb1/lAYjsbMmTaeKzbrogW2WJ0hyhDJ7lQLEBEByr/KrMo vFpt85B1mn/i9pTg7ffRBHZSkaiRSxpYtUhimHU0846m/nrpOFydzUMT6 A==; X-IronPort-AV: E=Sophos;i="6.01,159,1684825200"; d="scan'208";a="232170772" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 26 Jun 2023 04:20:53 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Mon, 26 Jun 2023 04:20:53 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.21 via Frontend Transport; Mon, 26 Jun 2023 04:20:51 -0700 From: Conor Dooley To: Subject: [PATCH v1 3/9] RISC-V: shunt isa_ext_arr to cpufeature.c Date: Mon, 26 Jun 2023 12:19:41 +0100 Message-ID: <20230626-endowment-crave-d72f9423c5b3@wendy> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230626-provable-angrily-81760e8c3cc6@wendy> References: <20230626-provable-angrily-81760e8c3cc6@wendy> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=8465; i=conor.dooley@microchip.com; h=from:subject:message-id; bh=GzlNWSg0xDPHyhC9BUJXzvFuSqFJWq3a7gm62UBaiWE=; b=owGbwMvMwCFWscWwfUFT0iXG02pJDCkzS3y311YYWCn0rfm58uG9udUaPsW7zx1fHpukde/Ywkfu zto9HaUsDGIcDLJiiiyJt/tapNb/cdnh3PMWZg4rE8gQBi5OAZjI912MDEvUOgyM6gMnXzn8kf9l0B 3WQw0pQisUc59sObZ0cWVvkQ4jQ0fjwj8607dFXijmzdz9TTiF5+OFk6XBPwJPM+z+4zVBmhEA X-Developer-Key: i=conor.dooley@microchip.com; a=openpgp; fpr=F9ECA03CF54F12CD01F1655722E2C55B37CF380C X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230626_042054_529201_D352741B X-CRM114-Status: GOOD ( 19.45 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Albert Ou , linux-kernel@vger.kernel.org, conor@kernel.org, conor.dooley@microchip.com, Rob Herring , Evan Green , Krzysztof Kozlowski , Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Stuebner , Andrew Jones Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org To facilitate using one struct to define extensions, rather than having several, shunt isa_ext_arr to cpufeature.c, where it will be used for probing extension presence also. As that scope of the array as widened, prefix it with riscv & drop the type from the variable name. Since the new array is const, print_isa() needs a wee bit of cleanup to avoid complaints about losing the const qualifier. Signed-off-by: Conor Dooley Reviewed-by: Andrew Jones --- arch/riscv/include/asm/hwcap.h | 3 ++ arch/riscv/kernel/cpu.c | 75 +--------------------------------- arch/riscv/kernel/cpufeature.c | 68 ++++++++++++++++++++++++++++++ 3 files changed, 73 insertions(+), 73 deletions(-) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index f041bfa7f6a0..7a57e6109aef 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -76,6 +76,9 @@ struct riscv_isa_ext_data { unsigned int isa_ext_id; }; +extern const struct riscv_isa_ext_data riscv_isa_ext[]; +extern const size_t riscv_isa_ext_count; + unsigned long riscv_isa_extension_base(const unsigned long *isa_bitmap); #define riscv_isa_extension_mask(ext) BIT_MASK(RISCV_ISA_EXT_##ext) diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c index 01f7e5c62997..61fb92e7d524 100644 --- a/arch/riscv/kernel/cpu.c +++ b/arch/riscv/kernel/cpu.c @@ -160,81 +160,10 @@ arch_initcall(riscv_cpuinfo_init); #ifdef CONFIG_PROC_FS -#define __RISCV_ISA_EXT_DATA(UPROP, EXTID) \ - { \ - .uprop = #UPROP, \ - .isa_ext_id = EXTID, \ - } - -/* - * The canonical order of ISA extension names in the ISA string is defined in - * chapter 27 of the unprivileged specification. - * - * Ordinarily, for in-kernel data structures, this order is unimportant but - * isa_ext_arr defines the order of the ISA string in /proc/cpuinfo. - * - * The specification uses vague wording, such as should, when it comes to - * ordering, so for our purposes the following rules apply: - * - * 1. All multi-letter extensions must be separated from other extensions by an - * underscore. - * - * 2. Additional standard extensions (starting with 'Z') must be sorted after - * single-letter extensions and before any higher-privileged extensions. - - * 3. The first letter following the 'Z' conventionally indicates the most - * closely related alphabetical extension category, IMAFDQLCBKJTPVH. - * If multiple 'Z' extensions are named, they must be ordered first by - * category, then alphabetically within a category. - * - * 3. Standard supervisor-level extensions (starting with 'S') must be listed - * after standard unprivileged extensions. If multiple supervisor-level - * extensions are listed, they must be ordered alphabetically. - * - * 4. Standard machine-level extensions (starting with 'Zxm') must be listed - * after any lower-privileged, standard extensions. If multiple - * machine-level extensions are listed, they must be ordered - * alphabetically. - * - * 5. Non-standard extensions (starting with 'X') must be listed after all - * standard extensions. If multiple non-standard extensions are listed, they - * must be ordered alphabetically. - * - * An example string following the order is: - * rv64imadc_zifoo_zigoo_zafoo_sbar_scar_zxmbaz_xqux_xrux - * - * New entries to this struct should follow the ordering rules described above. - */ -static struct riscv_isa_ext_data isa_ext_arr[] = { - __RISCV_ISA_EXT_DATA(zicbom, RISCV_ISA_EXT_ZICBOM), - __RISCV_ISA_EXT_DATA(zicboz, RISCV_ISA_EXT_ZICBOZ), - __RISCV_ISA_EXT_DATA(zicntr, RISCV_ISA_EXT_ZICNTR), - __RISCV_ISA_EXT_DATA(zicsr, RISCV_ISA_EXT_ZICSR), - __RISCV_ISA_EXT_DATA(zifencei, RISCV_ISA_EXT_ZIFENCEI), - __RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE), - __RISCV_ISA_EXT_DATA(zihpm, RISCV_ISA_EXT_ZIHPM), - __RISCV_ISA_EXT_DATA(zba, RISCV_ISA_EXT_ZBA), - __RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB), - __RISCV_ISA_EXT_DATA(zbs, RISCV_ISA_EXT_ZBS), - __RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA), - __RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA), - __RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF), - __RISCV_ISA_EXT_DATA(sstc, RISCV_ISA_EXT_SSTC), - __RISCV_ISA_EXT_DATA(svinval, RISCV_ISA_EXT_SVINVAL), - __RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT), - __RISCV_ISA_EXT_DATA(svpbmt, RISCV_ISA_EXT_SVPBMT), - __RISCV_ISA_EXT_DATA("", RISCV_ISA_EXT_MAX), -}; - static void print_isa_ext(struct seq_file *f) { - struct riscv_isa_ext_data *edata; - int i = 0, arr_sz; - - arr_sz = ARRAY_SIZE(isa_ext_arr) - 1; - - for (i = 0; i <= arr_sz; i++) { - edata = &isa_ext_arr[i]; + for (int i = 0; i < riscv_isa_ext_count; i++) { + const struct riscv_isa_ext_data *edata = &riscv_isa_ext[i]; if (!__riscv_isa_extension_available(NULL, edata->isa_ext_id)) continue; seq_printf(f, "_%s", edata->uprop); diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index bdcf460ea53d..f0ae310006de 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -99,6 +99,74 @@ static bool riscv_isa_extension_check(int id) return true; } +#define __RISCV_ISA_EXT_DATA(UPROP, EXTID) \ + { \ + .uprop = #UPROP, \ + .isa_ext_id = EXTID, \ + } + +/* + * The canonical order of ISA extension names in the ISA string is defined in + * chapter 27 of the unprivileged specification. + * + * Ordinarily, for in-kernel data structures, this order is unimportant but + * isa_ext_arr defines the order of the ISA string in /proc/cpuinfo. + * + * The specification uses vague wording, such as should, when it comes to + * ordering, so for our purposes the following rules apply: + * + * 1. All multi-letter extensions must be separated from other extensions by an + * underscore. + * + * 2. Additional standard extensions (starting with 'Z') must be sorted after + * single-letter extensions and before any higher-privileged extensions. + * + * 3. The first letter following the 'Z' conventionally indicates the most + * closely related alphabetical extension category, IMAFDQLCBKJTPVH. + * If multiple 'Z' extensions are named, they must be ordered first by + * category, then alphabetically within a category. + * + * 3. Standard supervisor-level extensions (starting with 'S') must be listed + * after standard unprivileged extensions. If multiple supervisor-level + * extensions are listed, they must be ordered alphabetically. + * + * 4. Standard machine-level extensions (starting with 'Zxm') must be listed + * after any lower-privileged, standard extensions. If multiple + * machine-level extensions are listed, they must be ordered + * alphabetically. + * + * 5. Non-standard extensions (starting with 'X') must be listed after all + * standard extensions. If multiple non-standard extensions are listed, they + * must be ordered alphabetically. + * + * An example string following the order is: + * rv64imadc_zifoo_zigoo_zafoo_sbar_scar_zxmbaz_xqux_xrux + * + * New entries to this struct should follow the ordering rules described above. + */ +const struct riscv_isa_ext_data riscv_isa_ext[] = { + __RISCV_ISA_EXT_DATA(zicbom, RISCV_ISA_EXT_ZICBOM), + __RISCV_ISA_EXT_DATA(zicboz, RISCV_ISA_EXT_ZICBOZ), + __RISCV_ISA_EXT_DATA(zicntr, RISCV_ISA_EXT_ZICNTR), + __RISCV_ISA_EXT_DATA(zicsr, RISCV_ISA_EXT_ZICSR), + __RISCV_ISA_EXT_DATA(zifencei, RISCV_ISA_EXT_ZIFENCEI), + __RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE), + __RISCV_ISA_EXT_DATA(zihpm, RISCV_ISA_EXT_ZIHPM), + __RISCV_ISA_EXT_DATA(zba, RISCV_ISA_EXT_ZBA), + __RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB), + __RISCV_ISA_EXT_DATA(zbs, RISCV_ISA_EXT_ZBS), + __RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA), + __RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA), + __RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF), + __RISCV_ISA_EXT_DATA(sstc, RISCV_ISA_EXT_SSTC), + __RISCV_ISA_EXT_DATA(svinval, RISCV_ISA_EXT_SVINVAL), + __RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT), + __RISCV_ISA_EXT_DATA(svpbmt, RISCV_ISA_EXT_SVPBMT), + __RISCV_ISA_EXT_DATA("", RISCV_ISA_EXT_MAX), +}; + +const size_t riscv_isa_ext_count = ARRAY_SIZE(riscv_isa_ext); + void __init riscv_fill_hwcap(void) { struct device_node *node;