From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7D2CC43603 for ; Thu, 19 Dec 2019 15:20:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85E16206EC for ; Thu, 19 Dec 2019 15:20:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="BIuTc9yI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726808AbfLSPUb (ORCPT ); Thu, 19 Dec 2019 10:20:31 -0500 Received: from lelv0142.ext.ti.com ([198.47.23.249]:51832 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726712AbfLSPUa (ORCPT ); Thu, 19 Dec 2019 10:20:30 -0500 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id xBJFK6F4034293; Thu, 19 Dec 2019 09:20:06 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1576768806; bh=Ka8A++Wgy2YG9+bGEyPwISxJzp8LG98T3zLMp5VZCyw=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=BIuTc9yIXXTO1iWg42njFB8qnw4gOT/0VVKdEOwmJy0r1HDP8HHL+dIfDBmiX28gG w1L33R3jdG1f8d+ORIiPvTvkZphvehQI7dW+kir6SVQEln04TDK0EBAM2lM/M7EHQb nl+vk+8sehSds9IlmkXIoPKZQcJZ0iYsuCs4/BlM= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id xBJFK66H089478 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 19 Dec 2019 09:20:06 -0600 Received: from DLEE104.ent.ti.com (157.170.170.34) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Thu, 19 Dec 2019 09:20:05 -0600 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Thu, 19 Dec 2019 09:20:05 -0600 Received: from [192.168.2.6] (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id xBJFK3Ek064843; Thu, 19 Dec 2019 09:20:04 -0600 Subject: Re: [PATCH 2/2] arm: use swiotlb for bounce buffer on LPAE configs To: Christoph Hellwig CC: Vignesh Raghavendra , Konrad Rzeszutek Wilk , Russell King - ARM Linux admin , , , , Roger Quadros References: <20190709142011.24984-1-hch@lst.de> <20190709142011.24984-3-hch@lst.de> <9bbd87c2-5b6c-069c-dd22-5105dc827428@ti.com> <20191219150259.GA3003@lst.de> From: Peter Ujfalusi Message-ID: <20106a84-8247-fa78-2381-2c94fad9cb6a@ti.com> Date: Thu, 19 Dec 2019 17:20:20 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191219150259.GA3003@lst.de> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 8bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Christoph, On 19/12/2019 17.02, Christoph Hellwig wrote: > Hi Peter, > > can you try the patch below (it will need to be split into two): Thank you! Unfortunately it does not help: [ 0.596208] edma: probe of 2700000.edma failed with error -5 [ 0.596626] edma: probe of 2728000.edma failed with error -5 ... [ 2.108602] sdhci-omap 23000000.mmc: Got CD GPIO [ 2.113899] mmc0: Failed to set 32-bit DMA mask. [ 2.118592] mmc0: No suitable DMA available - falling back to PIO [ 2.159038] mmc0: SDHCI controller on 23000000.mmc [23000000.mmc] using PIO [ 2.167531] mmc1: Failed to set 32-bit DMA mask. [ 2.172192] mmc1: No suitable DMA available - falling back to PIO [ 2.213841] mmc1: SDHCI controller on 23100000.mmc [23100000.mmc] using PIO - Péter > diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c > index e822af0d9219..30b9c6786ce3 100644 > --- a/arch/arm/mm/dma-mapping.c > +++ b/arch/arm/mm/dma-mapping.c > @@ -221,7 +221,8 @@ EXPORT_SYMBOL(arm_coherent_dma_ops); > > static int __dma_supported(struct device *dev, u64 mask, bool warn) > { > - unsigned long max_dma_pfn = min(max_pfn, arm_dma_pfn_limit); > + unsigned long max_dma_pfn = > + min_t(unsigned long, max_pfn, zone_dma_limit >> PAGE_SHIFT); > > /* > * Translate the device's DMA mask to a PFN limit. This > diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c > index 3ef204137e73..dd0e169a1bb1 100644 > --- a/arch/arm/mm/init.c > +++ b/arch/arm/mm/init.c > @@ -19,6 +19,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -84,15 +85,6 @@ static void __init find_limits(unsigned long *min, unsigned long *max_low, > phys_addr_t arm_dma_zone_size __read_mostly; > EXPORT_SYMBOL(arm_dma_zone_size); > > -/* > - * The DMA mask corresponding to the maximum bus address allocatable > - * using GFP_DMA. The default here places no restriction on DMA > - * allocations. This must be the smallest DMA mask in the system, > - * so a successful GFP_DMA allocation will always satisfy this. > - */ > -phys_addr_t arm_dma_limit; > -unsigned long arm_dma_pfn_limit; > - > static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, > unsigned long dma_size) > { > @@ -108,14 +100,14 @@ static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, > > void __init setup_dma_zone(const struct machine_desc *mdesc) > { > -#ifdef CONFIG_ZONE_DMA > - if (mdesc->dma_zone_size) { > + if (!IS_ENABLED(CONFIG_ZONE_DMA)) { > + zone_dma_limit = ((phys_addr_t)~0); > + } else if (mdesc->dma_zone_size) { > arm_dma_zone_size = mdesc->dma_zone_size; > - arm_dma_limit = PHYS_OFFSET + arm_dma_zone_size - 1; > - } else > - arm_dma_limit = 0xffffffff; > - arm_dma_pfn_limit = arm_dma_limit >> PAGE_SHIFT; > -#endif > + zone_dma_limit = PHYS_OFFSET + arm_dma_zone_size - 1; > + } else { > + zone_dma_limit = 0xffffffff; > + } > } > > static void __init zone_sizes_init(unsigned long min, unsigned long max_low, > @@ -279,7 +271,7 @@ void __init arm_memblock_init(const struct machine_desc *mdesc) > early_init_fdt_scan_reserved_mem(); > > /* reserve memory for DMA contiguous allocations */ > - dma_contiguous_reserve(arm_dma_limit); > + dma_contiguous_reserve(zone_dma_limit); > > arm_memblock_steal_permitted = false; > memblock_dump_all(); > diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h > index 88c121ac14b3..7dbd77554273 100644 > --- a/arch/arm/mm/mm.h > +++ b/arch/arm/mm/mm.h > @@ -82,14 +82,6 @@ extern __init void add_static_vm_early(struct static_vm *svm); > > #endif > > -#ifdef CONFIG_ZONE_DMA > -extern phys_addr_t arm_dma_limit; > -extern unsigned long arm_dma_pfn_limit; > -#else > -#define arm_dma_limit ((phys_addr_t)~0) > -#define arm_dma_pfn_limit (~0ul >> PAGE_SHIFT) > -#endif > - > extern phys_addr_t arm_lowmem_limit; > > void __init bootmem_init(void); > diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c > index b65dffdfb201..7a7501acd763 100644 > --- a/arch/arm64/mm/init.c > +++ b/arch/arm64/mm/init.c > @@ -441,7 +441,7 @@ void __init arm64_memblock_init(void) > early_init_fdt_scan_reserved_mem(); > > if (IS_ENABLED(CONFIG_ZONE_DMA)) { > - zone_dma_bits = ARM64_ZONE_DMA_BITS; > + zone_dma_limit = DMA_BIT_MASK(ARM64_ZONE_DMA_BITS); > arm64_dma_phys_limit = max_zone_phys(ARM64_ZONE_DMA_BITS); > } > > diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c > index 9488b63dfc87..337ace03d3f0 100644 > --- a/arch/powerpc/mm/mem.c > +++ b/arch/powerpc/mm/mem.c > @@ -223,7 +223,7 @@ static int __init mark_nonram_nosave(void) > * everything else. GFP_DMA32 page allocations automatically fall back to > * ZONE_DMA. > * > - * By using 31-bit unconditionally, we can exploit zone_dma_bits to inform the > + * By using 31-bit unconditionally, we can exploit zone_dma_limit to inform the > * generic DMA mapping code. 32-bit only devices (if not handled by an IOMMU > * anyway) will take a first dip into ZONE_NORMAL and get otherwise served by > * ZONE_DMA. > @@ -257,18 +257,20 @@ void __init paging_init(void) > printk(KERN_DEBUG "Memory hole size: %ldMB\n", > (long int)((top_of_ram - total_ram) >> 20)); > > +#ifdef CONFIG_ZONE_DMA > /* > * Allow 30-bit DMA for very limited Broadcom wifi chips on many > * powerbooks. > */ > - if (IS_ENABLED(CONFIG_PPC32)) > - zone_dma_bits = 30; > - else > - zone_dma_bits = 31; > - > -#ifdef CONFIG_ZONE_DMA > - max_zone_pfns[ZONE_DMA] = min(max_low_pfn, > - 1UL << (zone_dma_bits - PAGE_SHIFT)); > + if (IS_ENABLED(CONFIG_PPC32)) { > + zone_dma_limit = DMA_BIT_MASK(30); > + max_zone_pfns[ZONE_DMA] = min(max_low_pfn, > + 1UL << (30 - PAGE_SHIFT)); > + } else { > + zone_dma_limit = DMA_BIT_MASK(31); > + max_zone_pfns[ZONE_DMA] = min(max_low_pfn, > + 1UL << (31 - PAGE_SHIFT)); > + } > #endif > max_zone_pfns[ZONE_NORMAL] = max_low_pfn; > #ifdef CONFIG_HIGHMEM > diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c > index f0ce22220565..c403f61cb56b 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -118,7 +118,7 @@ void __init paging_init(void) > > sparse_memory_present_with_active_regions(MAX_NUMNODES); > sparse_init(); > - zone_dma_bits = 31; > + zone_dma_limit = DMA_BIT_MASK(31); > memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); > max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS); > max_zone_pfns[ZONE_NORMAL] = max_low_pfn; > diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h > index 24b8684aa21d..20d56d597506 100644 > --- a/include/linux/dma-direct.h > +++ b/include/linux/dma-direct.h > @@ -6,7 +6,7 @@ > #include /* for min_low_pfn */ > #include > > -extern unsigned int zone_dma_bits; > +extern phys_addr_t zone_dma_limit; > > #ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA > #include > diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c > index 6af7ae83c4ad..5ea1bed2ba6f 100644 > --- a/kernel/dma/direct.c > +++ b/kernel/dma/direct.c > @@ -21,7 +21,7 @@ > * it for entirely different regions. In that case the arch code needs to > * override the variable below for dma-direct to work properly. > */ > -unsigned int zone_dma_bits __ro_after_init = 24; > +phys_addr_t zone_dma_limit __ro_after_init = DMA_BIT_MASK(24); > > static void report_addr(struct device *dev, dma_addr_t dma_addr, size_t size) > { > @@ -74,7 +74,7 @@ static gfp_t __dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, > * Note that GFP_DMA32 and GFP_DMA are no ops without the corresponding > * zones. > */ > - if (*phys_limit <= DMA_BIT_MASK(zone_dma_bits)) > + if (*phys_limit <= zone_dma_limit) > return GFP_DMA; > if (*phys_limit <= DMA_BIT_MASK(32)) > return GFP_DMA32; > @@ -483,7 +483,7 @@ int dma_direct_supported(struct device *dev, u64 mask) > u64 min_mask; > > if (IS_ENABLED(CONFIG_ZONE_DMA)) > - min_mask = DMA_BIT_MASK(zone_dma_bits); > + min_mask = zone_dma_limit; > else > min_mask = DMA_BIT_MASK(32); > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. 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cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Thu, 19 Dec 2019 09:20:05 -0600 Received: from [192.168.2.6] (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id xBJFK3Ek064843; Thu, 19 Dec 2019 09:20:04 -0600 Subject: Re: [PATCH 2/2] arm: use swiotlb for bounce buffer on LPAE configs To: Christoph Hellwig References: <20190709142011.24984-1-hch@lst.de> <20190709142011.24984-3-hch@lst.de> <9bbd87c2-5b6c-069c-dd22-5105dc827428@ti.com> <20191219150259.GA3003@lst.de> Message-ID: <20106a84-8247-fa78-2381-2c94fad9cb6a@ti.com> Date: Thu, 19 Dec 2019 17:20:20 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191219150259.GA3003@lst.de> Content-Language: en-US X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Cc: Vignesh Raghavendra , Konrad Rzeszutek Wilk , Russell King - ARM Linux admin , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, Roger Quadros X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Peter Ujfalusi via iommu Reply-To: Peter Ujfalusi Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" SGkgQ2hyaXN0b3BoLAoKT24gMTkvMTIvMjAxOSAxNy4wMiwgQ2hyaXN0b3BoIEhlbGx3aWcgd3Jv dGU6Cj4gSGkgUGV0ZXIsCj4gCj4gY2FuIHlvdSB0cnkgdGhlIHBhdGNoIGJlbG93IChpdCB3aWxs IG5lZWQgdG8gYmUgc3BsaXQgaW50byB0d28pOgoKVGhhbmsgeW91IQoKVW5mb3J0dW5hdGVseSBp dCBkb2VzIG5vdCBoZWxwOgpbICAgIDAuNTk2MjA4XSBlZG1hOiBwcm9iZSBvZiAyNzAwMDAwLmVk bWEgZmFpbGVkIHdpdGggZXJyb3IgLTUKWyAgICAwLjU5NjYyNl0gZWRtYTogcHJvYmUgb2YgMjcy ODAwMC5lZG1hIGZhaWxlZCB3aXRoIGVycm9yIC01Ci4uLgpbICAgIDIuMTA4NjAyXSBzZGhjaS1v 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e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191219_072013_297220_286FA374 X-CRM114-Status: GOOD ( 25.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vignesh Raghavendra , Konrad Rzeszutek Wilk , Russell King - ARM Linux admin , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, Roger Quadros Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgQ2hyaXN0b3BoLAoKT24gMTkvMTIvMjAxOSAxNy4wMiwgQ2hyaXN0b3BoIEhlbGx3aWcgd3Jv dGU6Cj4gSGkgUGV0ZXIsCj4gCj4gY2FuIHlvdSB0cnkgdGhlIHBhdGNoIGJlbG93IChpdCB3aWxs 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