From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 26 May 2025 16:19:54 +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 1uJYgE-000Xtt-0A for lore@lore.pengutronix.de; Mon, 26 May 2025 16:19:54 +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 1uJYgD-0002JF-ES for lore@pengutronix.de; Mon, 26 May 2025 16:19:53 +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:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gqwGusFDkIMRYU6CAth9ugKqNnxMMOb+KRzDC76HVFo=; b=f1lmNI6DgxGRdn8gWYS1CsEymq yr517/lVVeL6YCwfiJm4HnQw5OkjcvFAaMhC4voHXp4p0VVzQat6CjN9g15e/ykBz7Pkq8fvPkyef qP/+osttFNGz8Ky9tc/GVYAs0Lv+x5WAtbSzgFJaqNCBikYccaRDgE9gcPPZir24A13mdJj5xC3/1 vBhbCCE09AvKXOvKX8ZjmOAKedZgcYW4gUCGdUGMmVHNc4s5C7YphsVlXr1KsnVr1Rw1xS8b51uAj q25y/xruILdt0uprhV03jfBK26DUFYlFuyeMepe4Q9sA5CPW5+9EiJU0KJUispANonvge0+PP4AEp lOctkbgw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uJYfl-00000008zDA-2a6s; Mon, 26 May 2025 14:19:25 +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 1uJYfh-00000008z9C-1ghY for barebox@lists.infradead.org; Mon, 26 May 2025 14:19:23 +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 1uJYfe-0001p8-CJ for barebox@lists.infradead.org; Mon, 26 May 2025 16:19:18 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Date: Mon, 26 May 2025 16:19:11 +0200 Message-Id: <20250526141914.185212-4-a.fatoum@barebox.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250526141914.185212-1-a.fatoum@barebox.org> References: <20250526141914.185212-1-a.fatoum@barebox.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250526_071921_437096_8D11790E X-CRM114-Status: GOOD ( 10.95 ) 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=-7.1 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 v2 3/6] resource: add MEMATTRS_ definitions for common attribute sets 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) Most SDRAM mapped by barebox falls into one of these categories, so add some readily usable MEMATTRS_ constants. Anything more special can OR the individual MEMATTR_ bits together. Signed-off-by: Ahmad Fatoum --- include/linux/ioport.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 1e266185651f..425928df3bfe 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -133,6 +133,14 @@ 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_RW_DEVICE (MEMATTR_UC | MEMATTR_XP) +#define MEMATTRS_FAULT (MEMATTR_UC | MEMATTR_XP | MEMATTR_RP | MEMATTR_RO) + /* PnP I/O specific bits (IORESOURCE_BITS) */ #define IORESOURCE_IO_16BIT_ADDR (1<<0) #define IORESOURCE_IO_FIXED (1<<1) @@ -204,5 +212,24 @@ int release_region(struct resource *res); extern struct resource iomem_resource; extern struct resource ioport_resource; +static inline void reserve_resource(struct resource *res) +{ + res->type = MEMTYPE_RESERVED; + /* Reserved memory is used for secure memory that should + * be hardware-protected independently of MMU flags. + * We map it as device memory, so we can still test + * if it's indeed inaccessible + */ + res->attrs = MEMATTRS_RW_DEVICE; + res->flags |= IORESOURCE_TYPE_VALID; +} + +static inline bool is_reserved_resource(const struct resource *res) +{ + if (res->flags & IORESOURCE_TYPE_VALID) + return res->type == MEMTYPE_RESERVED; + return false; +} + #endif /* __ASSEMBLY__ */ #endif /* _LINUX_IOPORT_H */ -- 2.39.5