From patchwork Fri Mar 20 23:18:19 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Luis R. Rodriguez" X-Patchwork-Id: 6062411 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B6F219F399 for ; Sat, 21 Mar 2015 00:24:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 851B620532 for ; Sat, 21 Mar 2015 00:24:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 46C4E20534 for ; Sat, 21 Mar 2015 00:24:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752081AbbCUAYs (ORCPT ); Fri, 20 Mar 2015 20:24:48 -0400 Received: from mail-pd0-f170.google.com ([209.85.192.170]:33096 "EHLO mail-pd0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751896AbbCUAYr (ORCPT ); Fri, 20 Mar 2015 20:24:47 -0400 Received: by pdnc3 with SMTP id c3so123210972pdn.0; Fri, 20 Mar 2015 17:24:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=YV81U5dgg98+tsDnYMKxs+KD4nw5atnT/mLmeAusasE=; b=UFYP3dGRm9L/PoLf9GOQkILNZ/BConnpJJ3FvXiRUfQN1loK1dj6s0nXtqz2qioibL niPP2SL1MPVH0xAMCrViZprFQ3i/2hLBsoHpwqsmNuE9Un4GNi1BmrWoukhfOzgppD/w DFG3cpRDA8fI6aH44JcGOlczqlEQm4XnLk59GxTReQBkQnPvtAV19kMp8jC2PZjUGftq APC3rwjY/m/RCe5OmY0aHpGVVC6H4ItosauKaxbzS7GW19QjIFLTQaQimrNAN2Ma5slu Vijg0bol0OFc3kR3cDHs0b2efAb4tpsvmVzIzQdkycxqM34+CojjLXsAqsYk8kivpOVk gmoA== X-Received: by 10.66.184.106 with SMTP id et10mr197384081pac.138.1426897487158; Fri, 20 Mar 2015 17:24:47 -0700 (PDT) Received: from mcgrof@gmail.com (c-98-234-145-61.hsd1.ca.comcast.net. [98.234.145.61]) by mx.google.com with ESMTPSA id pv4sm211217pbb.17.2015.03.20.17.24.43 (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 20 Mar 2015 17:24:45 -0700 (PDT) Received: by mcgrof@gmail.com (sSMTP sendmail emulation); Fri, 20 Mar 2015 17:22:35 -0700 From: "Luis R. Rodriguez" To: luto@amacapital.net, mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com, jgross@suse.com, JBeulich@suse.com, bp@suse.de, suresh.b.siddha@intel.com, venkatesh.pallipadi@intel.com, airlied@redhat.com Cc: linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, x86@kernel.org, xen-devel@lists.xenproject.org, "Luis R. Rodriguez" , Ingo Molnar , Daniel Vetter , Antonino Daplas , Jean-Christophe Plagniol-Villard , Tomi Valkeinen Subject: [PATCH v1 29/47] video: fbdev: matrox: use arch_phys_wc_add() and ioremap_wc() Date: Fri, 20 Mar 2015 16:18:19 -0700 Message-Id: <1426893517-2511-30-git-send-email-mcgrof@do-not-panic.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1426893517-2511-1-git-send-email-mcgrof@do-not-panic.com> References: <1426893517-2511-1-git-send-email-mcgrof@do-not-panic.com> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: "Luis R. Rodriguez" This driver uses the same ioremap()'d area for the MTRR. Convert the driver from using the x86 specific MTRR code to the architecture agnostic arch_phys_wc_add(). arch_phys_wc_add() will avoid MTRR if write-combining is available, in order to take advantage of that also ensure the ioremap'd area is requested as write-combining. There are a few motivations for this: a) Take advantage of PAT when available b) Help bury MTRR code away, MTRR is architecture specific and on x86 its replaced by PAT c) Help with the goal of eventually using _PAGE_CACHE_UC over _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (de33c442e) The conversion done is expressed by the following Coccinelle SmPL patch, it additionally required manual intervention to address all the #ifdery and removal of redundant things which arch_phys_wc_add() already addresses such as verbose message about when MTRR fails and doing nothing when we didn't get an MTRR. @ mtrr_found @ expression index, base, size; @@ -index = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1); +index = arch_phys_wc_add(base, size); @ mtrr_rm depends on mtrr_found @ expression mtrr_found.index, mtrr_found.base, mtrr_found.size; @@ -mtrr_del(index, base, size); +arch_phys_wc_del(index); @ mtrr_rm_zero_arg depends on mtrr_found @ expression mtrr_found.index; @@ -mtrr_del(index, 0, 0); +arch_phys_wc_del(index); @ mtrr_rm_fb_info depends on mtrr_found @ struct fb_info *info; expression mtrr_found.index; @@ -mtrr_del(index, info->fix.smem_start, info->fix.smem_len); +arch_phys_wc_del(index); @ ioremap_replace_nocache depends on mtrr_found @ struct fb_info *info; expression base, size; @@ -info->screen_base = ioremap_nocache(base, size); +info->screen_base = ioremap_wc(base, size); @ ioremap_replace_default depends on mtrr_found @ struct fb_info *info; expression base, size; @@ -info->screen_base = ioremap(base, size); +info->screen_base = ioremap_wc(base, size); Generated-by: Coccinelle SmPL Cc: Suresh Siddha Cc: Venkatesh Pallipadi Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Juergen Gross Cc: Daniel Vetter Cc: Andy Lutomirski Cc: Dave Airlie Cc: Antonino Daplas Cc: Jean-Christophe Plagniol-Villard Cc: Tomi Valkeinen Cc: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Luis R. Rodriguez --- drivers/video/fbdev/matrox/matroxfb_base.c | 36 +++++++++++------------------- drivers/video/fbdev/matrox/matroxfb_base.h | 27 +--------------------- 2 files changed, 14 insertions(+), 49 deletions(-) diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c index 62539ca..2f70365 100644 --- a/drivers/video/fbdev/matrox/matroxfb_base.c +++ b/drivers/video/fbdev/matrox/matroxfb_base.c @@ -370,12 +370,9 @@ static void matroxfb_remove(struct matrox_fb_info *minfo, int dummy) matroxfb_unregister_device(minfo); unregister_framebuffer(&minfo->fbcon); matroxfb_g450_shutdown(minfo); -#ifdef CONFIG_MTRR - if (minfo->mtrr.vram_valid) - mtrr_del(minfo->mtrr.vram, minfo->video.base, minfo->video.len); -#endif - mga_iounmap(minfo->mmio.vbase); - mga_iounmap(minfo->video.vbase); + arch_phys_wc_del(minfo->wc_cookie); + iounmap(minfo->mmio.vbase.vaddr); + iounmap(minfo->video.vbase.vaddr); release_mem_region(minfo->video.base, minfo->video.len_maximum); release_mem_region(minfo->mmio.base, 16384); kfree(minfo); @@ -1256,9 +1253,7 @@ static int nobios; /* "matroxfb:nobios" */ static int noinit = 1; /* "matroxfb:init" */ static int inverse; /* "matroxfb:inverse" */ static int sgram; /* "matroxfb:sgram" */ -#ifdef CONFIG_MTRR static int mtrr = 1; /* "matroxfb:nomtrr" */ -#endif static int grayscale; /* "matroxfb:grayscale" */ static int dev = -1; /* "matroxfb:dev:xxxxx" */ static unsigned int vesa = ~0; /* "matroxfb:vesa:xxxxx" */ @@ -1717,14 +1712,17 @@ static int initMatrox2(struct matrox_fb_info *minfo, struct board *b) if (mem && (mem < memsize)) memsize = mem; err = -ENOMEM; - if (mga_ioremap(ctrlptr_phys, 16384, MGA_IOREMAP_MMIO, &minfo->mmio.vbase)) { + + minfo->mmio.vbase.vaddr = ioremap_nocache(ctrlptr_phys, 16384); + if (!minfo->mmio.vbase.vaddr) { printk(KERN_ERR "matroxfb: cannot ioremap(%lX, 16384), matroxfb disabled\n", ctrlptr_phys); goto failVideoMR; } minfo->mmio.base = ctrlptr_phys; minfo->mmio.len = 16384; minfo->video.base = video_base_phys; - if (mga_ioremap(video_base_phys, memsize, MGA_IOREMAP_FB, &minfo->video.vbase)) { + minfo->video.vbase.vaddr = ioremap_wc(video_base_phys, memsize); + if (!minfo->video.vbase.vaddr) { printk(KERN_ERR "matroxfb: cannot ioremap(%lX, %d), matroxfb disabled\n", video_base_phys, memsize); goto failCtrlIO; @@ -1772,13 +1770,9 @@ static int initMatrox2(struct matrox_fb_info *minfo, struct board *b) minfo->video.len_usable = minfo->video.len; if (minfo->video.len_usable > b->base->maxdisplayable) minfo->video.len_usable = b->base->maxdisplayable; -#ifdef CONFIG_MTRR - if (mtrr) { - minfo->mtrr.vram = mtrr_add(video_base_phys, minfo->video.len, MTRR_TYPE_WRCOMB, 1); - minfo->mtrr.vram_valid = 1; - printk(KERN_INFO "matroxfb: MTRR's turned on\n"); - } -#endif /* CONFIG_MTRR */ + if (mtrr) + minfo->wc_cookie = arch_phys_wc_add(video_base_phys, + minfo->video.len); if (!minfo->devflags.novga) request_region(0x3C0, 32, "matrox"); @@ -1947,9 +1941,9 @@ static int initMatrox2(struct matrox_fb_info *minfo, struct board *b) return 0; failVideoIO:; matroxfb_g450_shutdown(minfo); - mga_iounmap(minfo->video.vbase); + iounmap(minfo->video.vbase.vaddr); failCtrlIO:; - mga_iounmap(minfo->mmio.vbase); + iounmap(minfo->mmio.vbase.vaddr); failVideoMR:; release_mem_region(video_base_phys, minfo->video.len_maximum); failCtrlMR:; @@ -2443,10 +2437,8 @@ static int __init matroxfb_setup(char *options) { nobios = !value; else if (!strcmp(this_opt, "init")) noinit = !value; -#ifdef CONFIG_MTRR else if (!strcmp(this_opt, "mtrr")) mtrr = value; -#endif else if (!strcmp(this_opt, "inv24")) inv24 = value; else if (!strcmp(this_opt, "cross4MB")) @@ -2515,10 +2507,8 @@ module_param(noinit, int, 0); MODULE_PARM_DESC(noinit, "Disables W/SG/SD-RAM and bus interface initialization (0 or 1=do not initialize) (default=0)"); module_param(memtype, int, 0); MODULE_PARM_DESC(memtype, "Memory type for G200/G400 (see Documentation/fb/matroxfb.txt for explanation) (default=3 for G200, 0 for G400)"); -#ifdef CONFIG_MTRR module_param(mtrr, int, 0); MODULE_PARM_DESC(mtrr, "This speeds up video memory accesses (0=disabled or 1) (default=1)"); -#endif module_param(sgram, int, 0); MODULE_PARM_DESC(sgram, "Indicates that G100/G200/G400 has SGRAM memory (0=SDRAM, 1=SGRAM) (default=0)"); module_param(inv24, int, 0); diff --git a/drivers/video/fbdev/matrox/matroxfb_base.h b/drivers/video/fbdev/matrox/matroxfb_base.h index 89a8a89a..09b02cd 100644 --- a/drivers/video/fbdev/matrox/matroxfb_base.h +++ b/drivers/video/fbdev/matrox/matroxfb_base.h @@ -44,9 +44,6 @@ #include #include -#ifdef CONFIG_MTRR -#include -#endif #if defined(CONFIG_PPC_PMAC) #include @@ -187,23 +184,6 @@ static inline void __iomem* vaddr_va(vaddr_t va) { return va.vaddr; } -#define MGA_IOREMAP_NORMAL 0 -#define MGA_IOREMAP_NOCACHE 1 - -#define MGA_IOREMAP_FB MGA_IOREMAP_NOCACHE -#define MGA_IOREMAP_MMIO MGA_IOREMAP_NOCACHE -static inline int mga_ioremap(unsigned long phys, unsigned long size, int flags, vaddr_t* virt) { - if (flags & MGA_IOREMAP_NOCACHE) - virt->vaddr = ioremap_nocache(phys, size); - else - virt->vaddr = ioremap(phys, size); - return (virt->vaddr == NULL); /* 0, !0... 0, error_code in future */ -} - -static inline void mga_iounmap(vaddr_t va) { - iounmap(va.vaddr); -} - struct my_timming { unsigned int pixclock; int mnp; @@ -449,12 +429,7 @@ struct matrox_fb_info { int plnwt; int srcorg; } capable; -#ifdef CONFIG_MTRR - struct { - int vram; - int vram_valid; - } mtrr; -#endif + int wc_cookie; struct { int precise_width; int mga_24bpp_fix;