From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 16 Jun 2025 09:24:29 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uR4Cj-007qaI-2m for lore@lore.pengutronix.de; Mon, 16 Jun 2025 09:24:29 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uR4Cj-0004wb-5T for lore@pengutronix.de; Mon, 16 Jun 2025 09:24:29 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=0HhbfDRDIR8g13IJx8Oj+lRMHDbwUhgRATmb+rsjuZE=; b=eBW3aCGYDcalFtlfws+guiqIl1 KP6W4IhSAVoKth+vHc2ja/AV19tAYUu3u4othVL5d1V1aeYDKkhKqIZyYlkG+eUtl4fZOPj9tYRcf MJflsLl32Zjy9+gEGykcLhg1z7/5XDSAQrzobyeQ4eaqrbXk0uESoW7HnT6FslkwFX6udYKOe65j/ BDKQ3IJSdjjqxZyyf87fp6UIDHM6gobsF099kKrhn/bOEcpTHo5ehX2ANfh0v7xNArMt7Wf7jqpBn Cizf9rMbZ+ILQSIyo54KPydS7RRbvPPbe5N6bVx7m7frX0pdszVSZ9grw0A6gVhvOWkN0189BtLCI zCGwnMdA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uR4C7-00000003cwN-04vJ; Mon, 16 Jun 2025 07:23:51 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uR474-00000003c83-28wm for barebox@lists.infradead.org; Mon, 16 Jun 2025 07:18:41 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=geraet.fritz.box) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1uR470-0006Gi-Bv; Mon, 16 Jun 2025 09:18:34 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 16 Jun 2025 09:16:29 +0200 Message-Id: <20250616071634.811000-1-a.fatoum@barebox.org> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250616_001838_569143_67B8F8B0 X-CRM114-Status: UNSURE ( 9.33 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.5 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 1/6] resource: mark normal memory as supporting being uncacheable X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The attributes report what the underlying memory is capable of, so if we can configure it as WT/WC/WB, it's likely we can configure it as uncached as well. This doesn't hold true for all architectures, but it does for ARM, so add it to the MEMATTRS_NORMAL bitfield for now. Signed-off-by: Ahmad Fatoum --- include/linux/ioport.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 425928df3bfe..ceff1bb7e5ac 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -133,11 +133,11 @@ enum resource_memtype { #define MEMATTR_RO 0x00020000 /* read-only */ #define MEMATTR_SP 0x00040000 /* specific-purpose */ -#define MEMATTRS_CACHEABLE (MEMATTR_WT | MEMATTR_WC | MEMATTR_WB) -#define MEMATTRS_RW (MEMATTRS_CACHEABLE | MEMATTR_XP) -#define MEMATTRS_RO (MEMATTRS_CACHEABLE | MEMATTR_XP | MEMATTR_RO) -#define MEMATTRS_RX (MEMATTRS_CACHEABLE | MEMATTR_RO) -#define MEMATTRS_RWX (MEMATTRS_CACHEABLE) /* TODO: remove all */ +#define MEMATTRS_NORMAL (MEMATTR_UC | MEMATTR_WT | MEMATTR_WC | MEMATTR_WB) +#define MEMATTRS_RW (MEMATTRS_NORMAL | MEMATTR_XP) +#define MEMATTRS_RO (MEMATTRS_NORMAL | MEMATTR_XP | MEMATTR_RO) +#define MEMATTRS_RX (MEMATTRS_NORMAL | MEMATTR_RO) +#define MEMATTRS_RWX (MEMATTRS_NORMAL) /* TODO: remove all */ #define MEMATTRS_RW_DEVICE (MEMATTR_UC | MEMATTR_XP) #define MEMATTRS_FAULT (MEMATTR_UC | MEMATTR_XP | MEMATTR_RP | MEMATTR_RO) -- 2.39.5