From patchwork Fri Sep 1 14:16:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13372658 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CB9BCA0FE1 for ; Fri, 1 Sep 2023 14:27:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349995AbjIAO1J (ORCPT ); Fri, 1 Sep 2023 10:27:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35702 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349988AbjIAO1J (ORCPT ); Fri, 1 Sep 2023 10:27:09 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61A5E10F8; Fri, 1 Sep 2023 07:27:04 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id D36AA1F86C; Fri, 1 Sep 2023 14:27:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1693578422; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QETxACuLG117Ppkadvcn1KtVg/Yq0288OgnzhzA/ULk=; b=tTb6ATZYkM5FNNeKaXMkOL4QJI48iFJt1y+xae4e6Sni0Qo27M2NlefCoxXCM+ZPwuj5tY r6xiCRU9xE1ETGEIZu5/kgrkooxMs/C9oh6EIsNPIXVUeTWz4BFtm8DB8Ne72nR4yY5uHC CKnY5HhPDRktVXU0PL1grEur0ikDxHE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1693578422; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QETxACuLG117Ppkadvcn1KtVg/Yq0288OgnzhzA/ULk=; b=r9L0JRZVYTtkWaU2SguMwkS3pjaoQE7s9J2buuvT1wa6t0fpg65RTcSNZfXNjZynX0yed+ 2ppvNK3qFb4vS+CA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 8E69913A12; Fri, 1 Sep 2023 14:27:02 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id WKLZIbb08WQGYAAAMHmgww (envelope-from ); Fri, 01 Sep 2023 14:27:02 +0000 From: Thomas Zimmermann To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, arnd@arndb.de, deller@gmx.de Cc: linuxppc-dev@lists.ozlabs.org, linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 1/4] arch/powerpc: Remove trailing whitespaces Date: Fri, 1 Sep 2023 16:16:33 +0200 Message-ID: <20230901142659.31787-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230901142659.31787-1-tzimmermann@suse.de> References: <20230901142659.31787-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Fix coding style. No functional changes. Signed-off-by: Thomas Zimmermann --- arch/powerpc/include/asm/machdep.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 4f6e7d7ee388..933465ed4c43 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -10,7 +10,7 @@ #include struct pt_regs; -struct pci_bus; +struct pci_bus; struct device_node; struct iommu_table; struct rtc_time; @@ -78,8 +78,8 @@ struct machdep_calls { unsigned char (*nvram_read_val)(int addr); void (*nvram_write_val)(int addr, unsigned char val); ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); - ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); - ssize_t (*nvram_size)(void); + ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); + ssize_t (*nvram_size)(void); void (*nvram_sync)(void); /* Exception handlers */ @@ -102,9 +102,9 @@ struct machdep_calls { */ long (*feature_call)(unsigned int feature, ...); - /* Get legacy PCI/IDE interrupt mapping */ + /* Get legacy PCI/IDE interrupt mapping */ int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); - + /* Get access protection for /dev/mem */ pgprot_t (*phys_mem_access_prot)(struct file *file, unsigned long pfn, From patchwork Fri Sep 1 14:16:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13372660 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAAE8CA0FF8 for ; Fri, 1 Sep 2023 14:27:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241708AbjIAO1L (ORCPT ); Fri, 1 Sep 2023 10:27:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349990AbjIAO1K (ORCPT ); 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a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1693578423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lY69nWq+ruLFTjlCtkGYv6GxUscH6nmoHfkXIbRS2WQ=; b=n11NPZLxzqvGt5DFncDZ9viICUcWKetcN6zDesNf6DnyUe/SgxBWsnFqH7ESlZfgFR+wuk GhJ4hpXXddNdIWDQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id D92741358B; Fri, 1 Sep 2023 14:27:02 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id WHncM7b08WQGYAAAMHmgww (envelope-from ); Fri, 01 Sep 2023 14:27:02 +0000 From: Thomas Zimmermann To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, arnd@arndb.de, deller@gmx.de Cc: linuxppc-dev@lists.ozlabs.org, linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 2/4] arch/powerpc: Remove file parameter from phys_mem_access_prot code Date: Fri, 1 Sep 2023 16:16:34 +0200 Message-ID: <20230901142659.31787-3-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230901142659.31787-1-tzimmermann@suse.de> References: <20230901142659.31787-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Remove 'file' parameter from struct machdep_calls.phys_mem_access_prot and its implementation in pci_phys_mem_access_prot(). The file is not used on PowerPC. By removing it, a later patch can simplify fbdev's mmap code, which uses phys_mem_access_prot() on PowerPC. Signed-off-by: Thomas Zimmermann --- arch/powerpc/include/asm/book3s/pgtable.h | 10 ++++++++-- arch/powerpc/include/asm/machdep.h | 3 +-- arch/powerpc/include/asm/nohash/pgtable.h | 10 ++++++++-- arch/powerpc/include/asm/pci.h | 4 +--- arch/powerpc/kernel/pci-common.c | 3 +-- arch/powerpc/mm/mem.c | 8 ++++---- 6 files changed, 23 insertions(+), 15 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/pgtable.h b/arch/powerpc/include/asm/book3s/pgtable.h index d18b748ea3ae..84e36a572641 100644 --- a/arch/powerpc/include/asm/book3s/pgtable.h +++ b/arch/powerpc/include/asm/book3s/pgtable.h @@ -20,9 +20,15 @@ extern void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, pte_t *ptep, pte_t entry, int dirty); +extern pgprot_t __phys_mem_access_prot(unsigned long pfn, unsigned long size, + pgprot_t vma_prot); + struct file; -extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, - unsigned long size, pgprot_t vma_prot); +static inline pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t vma_prot) +{ + return __phys_mem_access_prot(pfn, size, vma_prot); +} #define __HAVE_PHYS_MEM_ACCESS_PROT void __update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep); diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 933465ed4c43..d31a5ec1550d 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -106,8 +106,7 @@ struct machdep_calls { int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); /* Get access protection for /dev/mem */ - pgprot_t (*phys_mem_access_prot)(struct file *file, - unsigned long pfn, + pgprot_t (*phys_mem_access_prot)(unsigned long pfn, unsigned long size, pgprot_t vma_prot); diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index a6caaaab6f92..90366b0b3ad9 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -246,9 +246,15 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addre #define pgprot_writecombine pgprot_noncached_wc +extern pgprot_t __phys_mem_access_prot(unsigned long pfn, unsigned long size, + pgprot_t vma_prot); + struct file; -extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, - unsigned long size, pgprot_t vma_prot); +static inline pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t vma_prot) +{ + return __phys_mem_access_prot(pfn, size, vma_prot); +} #define __HAVE_PHYS_MEM_ACCESS_PROT #ifdef CONFIG_HUGETLB_PAGE diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h index 289f1ec85bc5..34ed4d51c546 100644 --- a/arch/powerpc/include/asm/pci.h +++ b/arch/powerpc/include/asm/pci.h @@ -104,9 +104,7 @@ extern void of_scan_pci_bridge(struct pci_dev *dev); extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus); -struct file; -extern pgprot_t pci_phys_mem_access_prot(struct file *file, - unsigned long pfn, +extern pgprot_t pci_phys_mem_access_prot(unsigned long pfn, unsigned long size, pgprot_t prot); diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index e88d7c9feeec..73f12a17e572 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -521,8 +521,7 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma) * PCI device, it tries to find the PCI device first and calls the * above routine */ -pgprot_t pci_phys_mem_access_prot(struct file *file, - unsigned long pfn, +pgprot_t pci_phys_mem_access_prot(unsigned long pfn, unsigned long size, pgprot_t prot) { diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 8b121df7b08f..03aadf657d15 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -34,18 +34,18 @@ unsigned long long memory_limit; unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] __page_aligned_bss; EXPORT_SYMBOL(empty_zero_page); -pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, - unsigned long size, pgprot_t vma_prot) +pgprot_t __phys_mem_access_prot(unsigned long pfn, unsigned long size, + pgprot_t vma_prot) { if (ppc_md.phys_mem_access_prot) - return ppc_md.phys_mem_access_prot(file, pfn, size, vma_prot); + return ppc_md.phys_mem_access_prot(pfn, size, vma_prot); if (!page_is_ram(pfn)) vma_prot = pgprot_noncached(vma_prot); return vma_prot; } -EXPORT_SYMBOL(phys_mem_access_prot); +EXPORT_SYMBOL(__phys_mem_access_prot); #ifdef CONFIG_MEMORY_HOTPLUG static DEFINE_MUTEX(linear_mapping_mutex); From patchwork Fri Sep 1 14:16:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13372661 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5119BCA0FF9 for ; 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Fri, 01 Sep 2023 14:27:03 +0000 From: Thomas Zimmermann To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, arnd@arndb.de, deller@gmx.de Cc: linuxppc-dev@lists.ozlabs.org, linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 3/4] arch/powerpc: Call internal __phys_mem_access_prot() in fbdev code Date: Fri, 1 Sep 2023 16:16:35 +0200 Message-ID: <20230901142659.31787-4-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230901142659.31787-1-tzimmermann@suse.de> References: <20230901142659.31787-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Call __phys_mem_access_prot() from the fbdev mmap helper fb_pgprotect(). Allows us to avoid the file argument, which can then be removed from fB_pgprotect() entirely. No other architecture uses the parameter. Signed-off-by: Thomas Zimmermann --- arch/powerpc/include/asm/fb.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/fb.h index 5f1a2e5f7654..0f1fe1310924 100644 --- a/arch/powerpc/include/asm/fb.h +++ b/arch/powerpc/include/asm/fb.h @@ -9,9 +9,9 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off) { - vma->vm_page_prot = phys_mem_access_prot(file, off >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); + vma->vm_page_prot = __phys_mem_access_prot(PHYS_PFN(off), + vma->vm_end - vma->vm_start, + vma->vm_page_prot); } #define fb_pgprotect fb_pgprotect From patchwork Fri Sep 1 14:16:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13372662 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 538ACCA0FFF for ; Fri, 1 Sep 2023 14:27:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349987AbjIAO1M (ORCPT ); Fri, 1 Sep 2023 10:27:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350004AbjIAO1L (ORCPT ); Fri, 1 Sep 2023 10:27:11 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19C8A10FE; Fri, 1 Sep 2023 07:27:05 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id B7FCE21865; Fri, 1 Sep 2023 14:27:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1693578423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VnigwmtkAyLPvkae3x4QxpwsLRKnHImnH8SvLgM9K4Q=; b=w8IGaKGIWBWJInOEgLRz/QbidJyArWGsICqIZvtGyhu4xIDtlMi5uWcMJU09Gn/P8S1LtJ qFdH7QDYoJZ9GfZNgT88Bd4O/ekc6LU2/B69H/HkaHeEow+3s6gZDtVy+byQn9JmZ4cReW DtwEeOTPwIGXDr1saHVdXlvi1KL038g= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1693578423; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VnigwmtkAyLPvkae3x4QxpwsLRKnHImnH8SvLgM9K4Q=; b=5gsuwXqLL2AFN/Ta9pkaFenxeTHfHoUuE8fVzeEO9ttXHUWZ9haq9mbNiR2iapXbDAFcyn OpUF6jYjDIDKoFCQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 71BCD1358B; Fri, 1 Sep 2023 14:27:03 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id SMrhGrf08WQGYAAAMHmgww (envelope-from ); Fri, 01 Sep 2023 14:27:03 +0000 From: Thomas Zimmermann To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, arnd@arndb.de, deller@gmx.de Cc: linuxppc-dev@lists.ozlabs.org, linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 4/4] fbdev: Replace fb_pgprotect() with fb_pgprot_device() Date: Fri, 1 Sep 2023 16:16:36 +0200 Message-ID: <20230901142659.31787-5-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230901142659.31787-1-tzimmermann@suse.de> References: <20230901142659.31787-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Rename the fbdev mmap helper fb_pgprotect() to fb_pgprot_device(). The helper sets VMA page-access flags for framebuffers in device I/O memory. The new name follows pgprot_device(), which does the same for arbitrary devices. Also clean up the helper's parameters and return value. Instead of the VMA instance, pass the individial parameters separately: existing page-access flags, the VMAs start and end addresses and the offset in the underlying device memory rsp file. Return the new page-access flags. These changes align fb_pgprot_device() closer with pgprot_device. Signed-off-by: Thomas Zimmermann Acked-by: Geert Uytterhoeven --- arch/ia64/include/asm/fb.h | 15 +++++++-------- arch/m68k/include/asm/fb.h | 19 ++++++++++--------- arch/mips/include/asm/fb.h | 11 +++++------ arch/powerpc/include/asm/fb.h | 13 +++++-------- arch/sparc/include/asm/fb.h | 15 +++++++++------ arch/x86/include/asm/fb.h | 10 ++++++---- arch/x86/video/fbdev.c | 15 ++++++++------- drivers/video/fbdev/core/fb_chrdev.c | 3 ++- include/asm-generic/fb.h | 12 ++++++------ 9 files changed, 58 insertions(+), 55 deletions(-) diff --git a/arch/ia64/include/asm/fb.h b/arch/ia64/include/asm/fb.h index 1717b26fd423..2fbad4a9fc15 100644 --- a/arch/ia64/include/asm/fb.h +++ b/arch/ia64/include/asm/fb.h @@ -8,17 +8,16 @@ #include -struct file; - -static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, - unsigned long off) +static inline pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) { - if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start)) - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); + if (efi_range_is_wc(vm_start, vm_end - vm_start)) + return pgprot_writecombine(prot); else - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + return pgprot_noncached(prot); } -#define fb_pgprotect fb_pgprotect +#define fb_pgprot_device fb_pgprot_device static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n) { diff --git a/arch/m68k/include/asm/fb.h b/arch/m68k/include/asm/fb.h index 24273fc7ad91..4acdf5b62871 100644 --- a/arch/m68k/include/asm/fb.h +++ b/arch/m68k/include/asm/fb.h @@ -5,26 +5,27 @@ #include #include -struct file; - -static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, - unsigned long off) +static inline pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) { #ifdef CONFIG_MMU #ifdef CONFIG_SUN3 - pgprot_val(vma->vm_page_prot) |= SUN3_PAGE_NOCACHE; + pgprot_val(prot) |= SUN3_PAGE_NOCACHE; #else if (CPU_IS_020_OR_030) - pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE030; + pgprot_val(prot) |= _PAGE_NOCACHE030; if (CPU_IS_040_OR_060) { - pgprot_val(vma->vm_page_prot) &= _CACHEMASK040; + pgprot_val(prot) &= _CACHEMASK040; /* Use no-cache mode, serialized */ - pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE_S; + pgprot_val(prot) |= _PAGE_NOCACHE_S; } #endif /* CONFIG_SUN3 */ #endif /* CONFIG_MMU */ + + return prot; } -#define fb_pgprotect fb_pgprotect +#define fb_pgprot_device fb_pgprot_device #include diff --git a/arch/mips/include/asm/fb.h b/arch/mips/include/asm/fb.h index 18b7226403ba..98e63d14a71f 100644 --- a/arch/mips/include/asm/fb.h +++ b/arch/mips/include/asm/fb.h @@ -3,14 +3,13 @@ #include -struct file; - -static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, - unsigned long off) +static inline pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) { - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + return pgprot_noncached(prot); } -#define fb_pgprotect fb_pgprotect +#define fb_pgprot_device fb_pgprot_device /* * MIPS doesn't define __raw_ I/O macros, so the helpers diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/fb.h index 0f1fe1310924..8e6a7fc4ae86 100644 --- a/arch/powerpc/include/asm/fb.h +++ b/arch/powerpc/include/asm/fb.h @@ -2,18 +2,15 @@ #ifndef _ASM_FB_H_ #define _ASM_FB_H_ -#include - #include -static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, - unsigned long off) +static inline pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) { - vma->vm_page_prot = __phys_mem_access_prot(PHYS_PFN(off), - vma->vm_end - vma->vm_start, - vma->vm_page_prot); + return __phys_mem_access_prot(PHYS_PFN(offset), vm_end - vm_start, prot); } -#define fb_pgprotect fb_pgprotect +#define fb_pgprot_device fb_pgprot_device #include diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h index 572ecd3e1cc4..dc0fa30d11f3 100644 --- a/arch/sparc/include/asm/fb.h +++ b/arch/sparc/include/asm/fb.h @@ -4,15 +4,18 @@ #include +#include + struct fb_info; -struct file; -struct vm_area_struct; #ifdef CONFIG_SPARC32 -static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, - unsigned long off) -{ } -#define fb_pgprotect fb_pgprotect +static inline pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) +{ + return prot; +} +#define fb_pgprot_device fb_pgprot_device #endif int fb_is_primary_device(struct fb_info *info); diff --git a/arch/x86/include/asm/fb.h b/arch/x86/include/asm/fb.h index 23873da8fb77..511aedb23d66 100644 --- a/arch/x86/include/asm/fb.h +++ b/arch/x86/include/asm/fb.h @@ -2,12 +2,14 @@ #ifndef _ASM_X86_FB_H #define _ASM_X86_FB_H +#include + struct fb_info; -struct file; -struct vm_area_struct; -void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off); -#define fb_pgprotect fb_pgprotect +pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset); +#define fb_pgprot_device fb_pgprot_device int fb_is_primary_device(struct fb_info *info); #define fb_is_primary_device fb_is_primary_device diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c index 49a0452402e9..c7f247d91386 100644 --- a/arch/x86/video/fbdev.c +++ b/arch/x86/video/fbdev.c @@ -13,16 +13,17 @@ #include #include -void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off) +pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) { - unsigned long prot; - - prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK; + pgprot_val(prot) &= ~_PAGE_CACHE_MASK; if (boot_cpu_data.x86 > 3) - pgprot_val(vma->vm_page_prot) = - prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS); + pgprot_val(prot) |= cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS); + + return prot; } -EXPORT_SYMBOL(fb_pgprotect); +EXPORT_SYMBOL(fb_pgprot_device); int fb_is_primary_device(struct fb_info *info) { diff --git a/drivers/video/fbdev/core/fb_chrdev.c b/drivers/video/fbdev/core/fb_chrdev.c index eadb81f53a82..100a92b2c3b7 100644 --- a/drivers/video/fbdev/core/fb_chrdev.c +++ b/drivers/video/fbdev/core/fb_chrdev.c @@ -365,7 +365,8 @@ static int fb_mmap(struct file *file, struct vm_area_struct *vma) mutex_unlock(&info->mm_lock); vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); - fb_pgprotect(file, vma, start); + vma->vm_page_prot = fb_pgprot_device(vma->vm_page_prot, vma->vm_start, + vma->vm_end, start); return vm_iomap_memory(vma, start, len); } diff --git a/include/asm-generic/fb.h b/include/asm-generic/fb.h index bb7ee9c70e60..876e1bef7859 100644 --- a/include/asm-generic/fb.h +++ b/include/asm-generic/fb.h @@ -12,14 +12,14 @@ #include struct fb_info; -struct file; -#ifndef fb_pgprotect -#define fb_pgprotect fb_pgprotect -static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, - unsigned long off) +#ifndef fb_pgprot_device +#define fb_pgprot_device fb_pgprot_device +static inline pgprot_t fb_pgprot_device(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) { - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); + return pgprot_writecombine(prot); } #endif