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Mon, 08 Feb 2021 22:22:32 -0800 (PST) From: Claire Chang To: Rob Herring , mpe@ellerman.id.au, Joerg Roedel , Will Deacon , Frank Rowand , Konrad Rzeszutek Wilk , boris.ostrovsky@oracle.com, jgross@suse.com, Christoph Hellwig , Marek Szyprowski Subject: [PATCH v4 07/14] swiotlb: Update swiotlb API to gain a struct device argument Date: Tue, 9 Feb 2021 14:21:24 +0800 Message-Id: <20210209062131.2300005-8-tientzu@chromium.org> X-Mailer: git-send-email 2.30.0.478.g8a0d178c01-goog In-Reply-To: <20210209062131.2300005-1-tientzu@chromium.org> References: <20210209062131.2300005-1-tientzu@chromium.org> MIME-Version: 1.0 Cc: heikki.krogerus@linux.intel.com, peterz@infradead.org, benh@kernel.crashing.org, grant.likely@arm.com, paulus@samba.org, mingo@kernel.org, sstabellini@kernel.org, Saravana Kannan , xypron.glpk@gmx.de, "Rafael J . Wysocki" , Bartosz Golaszewski , xen-devel@lists.xenproject.org, Thierry Reding , linux-devicetree , linuxppc-dev@lists.ozlabs.org, Nicolas Boichat , Claire Chang , Dan Williams , Andy Shevchenko , Greg KH , Randy Dunlap , lkml , "list@263.net:IOMMU DRIVERS" , Jim Quinlan , Robin Murphy 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Introduce the get_swiotlb() getter and update all callers of is_swiotlb_active(), is_swiotlb_buffer() and get_swiotlb_start() to gain a struct device argument. Signed-off-by: Claire Chang --- drivers/iommu/dma-iommu.c | 12 ++++++------ drivers/xen/swiotlb-xen.c | 4 ++-- include/linux/swiotlb.h | 10 +++++----- kernel/dma/direct.c | 8 ++++---- kernel/dma/direct.h | 6 +++--- kernel/dma/swiotlb.c | 23 +++++++++++++++++------ 6 files changed, 37 insertions(+), 26 deletions(-) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index f659395e7959..abdbe14472cc 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -503,7 +503,7 @@ static void __iommu_dma_unmap_swiotlb(struct device *dev, dma_addr_t dma_addr, __iommu_dma_unmap(dev, dma_addr, size); - if (unlikely(is_swiotlb_buffer(phys))) + if (unlikely(is_swiotlb_buffer(dev, phys))) swiotlb_tbl_unmap_single(dev, phys, size, iova_align(iovad, size), dir, attrs); } @@ -580,7 +580,7 @@ static dma_addr_t __iommu_dma_map_swiotlb(struct device *dev, phys_addr_t phys, } iova = __iommu_dma_map(dev, phys, aligned_size, prot, dma_mask); - if ((iova == DMA_MAPPING_ERROR) && is_swiotlb_buffer(phys)) + if ((iova == DMA_MAPPING_ERROR) && is_swiotlb_buffer(dev, phys)) swiotlb_tbl_unmap_single(dev, phys, org_size, aligned_size, dir, attrs); @@ -753,7 +753,7 @@ static void iommu_dma_sync_single_for_cpu(struct device *dev, if (!dev_is_dma_coherent(dev)) arch_sync_dma_for_cpu(phys, size, dir); - if (is_swiotlb_buffer(phys)) + if (is_swiotlb_buffer(dev, phys)) swiotlb_tbl_sync_single(dev, phys, size, dir, SYNC_FOR_CPU); } @@ -766,7 +766,7 @@ static void iommu_dma_sync_single_for_device(struct device *dev, return; phys = iommu_iova_to_phys(iommu_get_dma_domain(dev), dma_handle); - if (is_swiotlb_buffer(phys)) + if (is_swiotlb_buffer(dev, phys)) swiotlb_tbl_sync_single(dev, phys, size, dir, SYNC_FOR_DEVICE); if (!dev_is_dma_coherent(dev)) @@ -787,7 +787,7 @@ static void iommu_dma_sync_sg_for_cpu(struct device *dev, if (!dev_is_dma_coherent(dev)) arch_sync_dma_for_cpu(sg_phys(sg), sg->length, dir); - if (is_swiotlb_buffer(sg_phys(sg))) + if (is_swiotlb_buffer(dev, sg_phys(sg))) swiotlb_tbl_sync_single(dev, sg_phys(sg), sg->length, dir, SYNC_FOR_CPU); } @@ -804,7 +804,7 @@ static void iommu_dma_sync_sg_for_device(struct device *dev, return; for_each_sg(sgl, sg, nelems, i) { - if (is_swiotlb_buffer(sg_phys(sg))) + if (is_swiotlb_buffer(dev, sg_phys(sg))) swiotlb_tbl_sync_single(dev, sg_phys(sg), sg->length, dir, SYNC_FOR_DEVICE); diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 91f8c68d1a9b..f424d46756b1 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -192,8 +192,8 @@ int __ref xen_swiotlb_init(int verbose, bool early) /* * IO TLB memory already allocated. Just use it. */ - if (is_swiotlb_active()) { - xen_io_tlb_start = phys_to_virt(get_swiotlb_start()); + if (is_swiotlb_active(NULL)) { + xen_io_tlb_start = phys_to_virt(get_swiotlb_start(NULL)); goto end; } diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 041611bf3c2a..f13a52a97382 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -71,16 +71,16 @@ dma_addr_t swiotlb_map(struct device *dev, phys_addr_t phys, #ifdef CONFIG_SWIOTLB extern enum swiotlb_force swiotlb_force; -bool is_swiotlb_buffer(phys_addr_t paddr); +bool is_swiotlb_buffer(struct device *dev, phys_addr_t paddr); void __init swiotlb_exit(void); unsigned int swiotlb_max_segment(void); size_t swiotlb_max_mapping_size(struct device *dev); -bool is_swiotlb_active(void); -phys_addr_t get_swiotlb_start(void); +bool is_swiotlb_active(struct device *dev); +phys_addr_t get_swiotlb_start(struct device *dev); void __init swiotlb_adjust_size(unsigned long new_size); #else #define swiotlb_force SWIOTLB_NO_FORCE -static inline bool is_swiotlb_buffer(phys_addr_t paddr) +static inline bool is_swiotlb_buffer(struct device *dev, phys_addr_t paddr) { return false; } @@ -96,7 +96,7 @@ static inline size_t swiotlb_max_mapping_size(struct device *dev) return SIZE_MAX; } -static inline bool is_swiotlb_active(void) +static inline bool is_swiotlb_active(struct device *dev) { return false; } diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 002268262c9a..30ccbc08e229 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -343,7 +343,7 @@ void dma_direct_sync_sg_for_device(struct device *dev, for_each_sg(sgl, sg, nents, i) { phys_addr_t paddr = dma_to_phys(dev, sg_dma_address(sg)); - if (unlikely(is_swiotlb_buffer(paddr))) + if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_tbl_sync_single(dev, paddr, sg->length, dir, SYNC_FOR_DEVICE); @@ -369,7 +369,7 @@ void dma_direct_sync_sg_for_cpu(struct device *dev, if (!dev_is_dma_coherent(dev)) arch_sync_dma_for_cpu(paddr, sg->length, dir); - if (unlikely(is_swiotlb_buffer(paddr))) + if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_tbl_sync_single(dev, paddr, sg->length, dir, SYNC_FOR_CPU); @@ -495,7 +495,7 @@ int dma_direct_supported(struct device *dev, u64 mask) size_t dma_direct_max_mapping_size(struct device *dev) { /* If SWIOTLB is active, use its maximum mapping size */ - if (is_swiotlb_active() && + if (is_swiotlb_active(dev) && (dma_addressing_limited(dev) || swiotlb_force == SWIOTLB_FORCE)) return swiotlb_max_mapping_size(dev); return SIZE_MAX; @@ -504,7 +504,7 @@ size_t dma_direct_max_mapping_size(struct device *dev) bool dma_direct_need_sync(struct device *dev, dma_addr_t dma_addr) { return !dev_is_dma_coherent(dev) || - is_swiotlb_buffer(dma_to_phys(dev, dma_addr)); + is_swiotlb_buffer(dev, dma_to_phys(dev, dma_addr)); } /** diff --git a/kernel/dma/direct.h b/kernel/dma/direct.h index b98615578737..7b83b1595989 100644 --- a/kernel/dma/direct.h +++ b/kernel/dma/direct.h @@ -56,7 +56,7 @@ static inline void dma_direct_sync_single_for_device(struct device *dev, { phys_addr_t paddr = dma_to_phys(dev, addr); - if (unlikely(is_swiotlb_buffer(paddr))) + if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_DEVICE); if (!dev_is_dma_coherent(dev)) @@ -73,7 +73,7 @@ static inline void dma_direct_sync_single_for_cpu(struct device *dev, arch_sync_dma_for_cpu_all(); } - if (unlikely(is_swiotlb_buffer(paddr))) + if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_CPU); if (dir == DMA_FROM_DEVICE) @@ -113,7 +113,7 @@ static inline void dma_direct_unmap_page(struct device *dev, dma_addr_t addr, if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) dma_direct_sync_single_for_cpu(dev, addr, size, dir); - if (unlikely(is_swiotlb_buffer(phys))) + if (unlikely(is_swiotlb_buffer(dev, phys))) swiotlb_tbl_unmap_single(dev, phys, size, size, dir, attrs); } #endif /* _KERNEL_DMA_DIRECT_H */ diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 3a17451c5981..e22e7ae75f1c 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -107,6 +107,11 @@ struct swiotlb { }; static struct swiotlb default_swiotlb; +static inline struct swiotlb *get_swiotlb(struct device *dev) +{ + return &default_swiotlb; +} + /* * Max segment that we can provide which (if pages are contingous) will * not be bounced (unless SWIOTLB_FORCE is set). @@ -751,23 +756,29 @@ size_t swiotlb_max_mapping_size(struct device *dev) return ((size_t)1 << IO_TLB_SHIFT) * IO_TLB_SEGSIZE; } -bool is_swiotlb_active(void) +bool is_swiotlb_active(struct device *dev) { + struct swiotlb *swiotlb = get_swiotlb(dev); + /* * When SWIOTLB is initialized, even if swiotlb->start points to * physical address zero, swiotlb->end surely doesn't. */ - return default_swiotlb.end != 0; + return swiotlb->end != 0; } -bool is_swiotlb_buffer(phys_addr_t paddr) +bool is_swiotlb_buffer(struct device *dev, phys_addr_t paddr) { - return paddr >= default_swiotlb.start && paddr < default_swiotlb.end; + struct swiotlb *swiotlb = get_swiotlb(dev); + + return paddr >= swiotlb->start && paddr < swiotlb->end; } -phys_addr_t get_swiotlb_start(void) +phys_addr_t get_swiotlb_start(struct device *dev) { - return default_swiotlb.start; + struct swiotlb *swiotlb = get_swiotlb(dev); + + return swiotlb->start; } #ifdef CONFIG_DEBUG_FS -- 2.30.0.478.g8a0d178c01-goog _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu