From patchwork Tue Sep 12 13:49:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13381712 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 56198CA0EEA for ; Tue, 12 Sep 2023 13:50:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235566AbjILNvB (ORCPT ); Tue, 12 Sep 2023 09:51:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235052AbjILNu6 (ORCPT ); Tue, 12 Sep 2023 09:50:58 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2CA0610DC; Tue, 12 Sep 2023 06:50:54 -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 DB3741F750; Tue, 12 Sep 2023 13:50:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1694526652; 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=8wTvIDVhYd6CW8GIlwJym+m+SkuYKKbeC+cqwQHGlPw=; b=DZ5O6TroiOclaFjC69JtEN9NxmnFJICFUViEGw9CTLYjsiEOkFBiqOqG++vCLqimXo9cbI BQCSNjXKTjqroW0y0NhVjJUYfaxrIu53jrDiicKsARE3QKo3fyovh3F8y457MFmiwYTLGF QfHKeeqC8lB5LJBGb1ITVYS8BB5auvU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1694526652; 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=8wTvIDVhYd6CW8GIlwJym+m+SkuYKKbeC+cqwQHGlPw=; b=OsfJh4JUPYTkmgnKzXjtISuHCuMGc++yW41Y0MpokQf1OuMy+M26q+2JinCUfj/dqYfbyz cqGIO1koC2q6oPCg== 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 A1A73139DB; Tue, 12 Sep 2023 13:50:52 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id aBpwJrxsAGVKQwAAMHmgww (envelope-from ); Tue, 12 Sep 2023 13:50:52 +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 v4 4/5] arch/powerpc: Remove file parameter from phys_mem_access_prot code Date: Tue, 12 Sep 2023 15:49:02 +0200 Message-ID: <20230912135050.17155-5-tzimmermann@suse.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230912135050.17155-1-tzimmermann@suse.de> References: <20230912135050.17155-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@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 d18b748ea3ae0..84e36a5726417 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 933465ed4c432..d31a5ec1550d4 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 a6caaaab6f922..90366b0b3ad9a 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 289f1ec85bc54..34ed4d51c546b 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 e88d7c9feeec3..73f12a17e572e 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 8b121df7b08f8..03aadf657d15a 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);