search for: config_swiotlb

...70ad17..7045f45 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1801,7 +1801,14 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; gfp &= ~(__GFP_IO | __GFP_WAIT); } - +#ifdef CONFIG_SWIOTLB + if (swiotlb_nr_tbl()) { + st->nents++; + sg_set_page(sg, page, PAGE_SIZE, 0); + sg = sg_next(sg); + continue; + } +#endif if (!i || page_to_pfn(page) != last_pfn + 1) { if (i) sg = sg_next(sg); @@ -1812,8 +1819,10 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_objec...

...le changed, 2 insertions(+), 2 deletions(-) diff --git a/drm/nouveau/nouveau_bo.c b/drm/nouveau/nouveau_bo.c index e3acc35e3805..2cdaea58678d 100644 --- a/drm/nouveau/nouveau_bo.c +++ b/drm/nouveau/nouveau_bo.c @@ -1502,7 +1502,7 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) } #endif -#ifdef CONFIG_SWIOTLB +#if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86) if (swiotlb_nr_tbl()) { return ttm_dma_populate((void *)ttm, dev->dev); } @@ -1570,7 +1570,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) } #endif -#ifdef CONFIG_SWIOTLB +#if IS_ENABLED(CONFIG_SWIOTLB) && I...

...obj-$(CONFIG_SOFTWARE_SUSPEND) += suspend_asm.o #obj-$(CONFIG_CPU_FREQ) += cpufreq/ #obj-$(CONFIG_EARLY_PRINTK) += early_printk.o -#obj-$(CONFIG_GART_IOMMU) += pci-gart.o aperture.o +c-obj-$(CONFIG_GART_IOMMU) += pci-gart.o aperture.o c-obj-$(CONFIG_DUMMY_IOMMU) += pci-nommu.o pci-dma.o -#obj-$(CONFIG_SWIOTLB) += swiotlb.o +obj-$(CONFIG_SWIOTLB) += swiotlb.o obj-$(CONFIG_KPROBES) += kprobes.o c-obj-$(CONFIG_MODULES) += module.o --- linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/e820.c.orig 2005-06-17 14:43:46.259030680 -0500 +++ linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/e820.c 2005-06-17 14...

...struct nvif_mmu *mmu = &drm->client.mmu; struct drm_device *dev = drm->dev; - bool need_swiotlb = false; int typei, ret; ret = nouveau_ttm_init_host(drm, 0); @@ -300,13 +299,10 @@ nouveau_ttm_init(struct nouveau_drm *drm) drm->agp.cma = pci->agp.cma; } -#if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86) - need_swiotlb = is_swiotlb_active(dev->dev); -#endif - ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev, dev->anon_inode->i_mapping, - dev->vma_offset_manager, need_swiotlb, + dev->vma_offs...

v2 was doing some pretty nasty things with the DMA API, so I took a different approach for this v3. As suggested, this version uses ttm_dma_populate() to populate BOs. The reason for doing this was that it would entitle us to using the DMA sync functions, but since the memory returned is already coherent anyway, we do not even need to call these functions anymore. So this series has turned into

https://bugs.freedesktop.org/show_bug.cgi?id=105884 Bug ID: 105884 Summary: Firefox causes a crash in the nouveau driver on GTX 1060 Product: xorg Version: git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: major Priority: medium Component:

While writing a driver for a device doing lots of DMA I''ve hit an "swiotlb_full()" problem. This surprised me somewhat as I wouldn''t have expected to need the use of the software TLB - it''s a 64 bit capable device on a server with only 2 GB of RAM, and so I''d have expected to be using a hardware TLB. Is this a peculiarity of Xen, or should I be right

...olved here is a limitation of the SWIOTLB implementation, which does not support allocations larger than 256kb. When the virtio-blk driver tries to read/write a block larger than that, the allocation of the dma-handle fails and an IO error is reported. Changes to v6 are: - Fix build errors with CONFIG_SWIOTLB=n Please review. Thanks, Joerg Joerg Roedel (5): swiotlb: Introduce swiotlb_max_mapping_size() swiotlb: Add is_swiotlb_active() function dma: Introduce dma_max_mapping_size() virtio: Introduce virtio_max_dma_size() virtio-blk: Consider virtio_max_dma_size() for maximum segment size...

...he > >> > alternatives? > >> Convert TTM to use the dma api? :-) > > > > Actually TTM already has a page alloc backend using the DMA API. It's > > just not used for the standard case right now. > > Indeed, and Nouveau even already makes use of it if CONFIG_SWIOTLB is > set apparently. > > > I would argue that we should just use this page allocator (which has the > > side effect of getting pages from CMA if available -> you are actually > > free to change the caching) and do away with the other allocator in the > > ARM case....

...n *iovad = &cookie->iovad; + size_t iova_off = iova_offset(iovad, dma_addr); + size_t aligned_size = iova_align(iovad, size + iova_off); + phys_addr_t phys; + + phys = iommu_iova_to_phys(domain, dma_addr); + if (WARN_ON(!phys)) + return; + + __iommu_dma_unmap(dev, dma_addr, size); + +#ifdef CONFIG_SWIOTLB + if (unlikely(is_swiotlb_buffer(phys))) + swiotlb_tbl_unmap_single(dev, phys, size, + aligned_size, dir, attrs); +#endif +} + static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys, - size_t size, int prot, dma_addr_t dma_mask) + size_t org_size, dma_addr_t dma_mask, bool co...

...91 } 92 static inline void swiotlb_exit(void) 93 { 94 } 95 static inline unsigned int swiotlb_max_segment(void) 96 { 97 return 0; 98 } > 99 static inline size_t swiotlb_max_mapping_size(struct device *dev) 100 { 101 return SIZE_MAX; 102 } 103 #endif /* CONFIG_SWIOTLB */ 104 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -------------- next part -------------- A non-text attachment was scrubbed... Name: .config.gz Type: application/gzip Size: 651...

...id); #else #define swiotlb_force SWIOTLB_NO_FORCE static inline bool is_swiotlb_buffer(phys_addr_t paddr) @@ -100,6 +101,11 @@ static inline size_t swiotlb_max_mapping_size(struct device *dev) { return SIZE_MAX; } + +static inline bool is_swiotlb_active(void) +{ + return false; +} #endif /* CONFIG_SWIOTLB */ extern void swiotlb_print_info(void); diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 9cb21259cb0b..c873f9cc2146 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -667,3 +667,12 @@ size_t swiotlb_max_mapping_size(struct device *dev) { return ((size_t)1 <<...

...need - at least for ARM. What are the >> > alternatives? >> Convert TTM to use the dma api? :-) > > Actually TTM already has a page alloc backend using the DMA API. It's > just not used for the standard case right now. Indeed, and Nouveau even already makes use of it if CONFIG_SWIOTLB is set apparently. > I would argue that we should just use this page allocator (which has the > side effect of getting pages from CMA if available -> you are actually > free to change the caching) and do away with the other allocator in the > ARM case. Mm? Does it mean that CMA mem...

...swiotlb_max_segment(void) 97 { 98 return 0; 99 } > 100 static inline size_t swiotlb_max_mapping_size(struct device *dev) 101 { 102 return SIZE_MAX; 103 } 104 > 105 static inline bool is_swiotlb_active(void) 106 { 107 return false; 108 } 109 #endif /* CONFIG_SWIOTLB */ 110 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -------------- next part -------------- A non-text attachment was scrubbed... Name: .config.gz Type: application/gzip Size: 651...

...lternatives? >> >> Convert TTM to use the dma api? :-) >> > >> > Actually TTM already has a page alloc backend using the DMA API. It's >> > just not used for the standard case right now. >> >> Indeed, and Nouveau even already makes use of it if CONFIG_SWIOTLB is >> set apparently. >> >> > I would argue that we should just use this page allocator (which has the >> > side effect of getting pages from CMA if available -> you are actually >> > free to change the caching) and do away with the other allocator in the &...

..._CMPXCHG=y CONFIG_X86_L1_CACHE_SHIFT=6 CONFIG_X86_XADD=y CONFIG_X86_WP_WORKS_OK=y CONFIG_X86_TSC=y CONFIG_X86_CMPXCHG64=y CONFIG_X86_CMOV=y CONFIG_X86_MINIMUM_CPU_FAMILY=64 CONFIG_X86_DEBUGCTLMSR=y CONFIG_CPU_SUP_INTEL=y CONFIG_CPU_SUP_AMD=y CONFIG_CPU_SUP_CENTAUR=y CONFIG_HPET_TIMER=y CONFIG_DMI=y CONFIG_SWIOTLB=y CONFIG_IOMMU_HELPER=y CONFIG_NR_CPUS=1 CONFIG_PREEMPT_NONE=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y CONFIG_ARCH_PHYS_ADDR_T_64BIT=y CONFIG_DIRECT_GBPAGES=y CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SELECT_MEMORY_MODEL=y CONFIG_ILLEGAL_POINTER_VALUE=0xdead000...

...S=32 # CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_VOLUNTARY=y # CONFIG_PREEMPT is not set CONFIG_PREEMPT_BKL=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y CONFIG_VM86=y # CONFIG_TOSHIBA is not set # CONFIG_I8K is not set # CONFIG_X86_REBOOTFIXUPS is not set CONFIG_MICROCODE=y CONFIG_X86_CPUID=m CONFIG_SWIOTLB=y # # Bus options (PCI, PCMCIA, EISA, MCA, ISA) # CONFIG_PCI=y # CONFIG_PCI_GOBIOS is not set # CONFIG_PCI_GOMMCONFIG is not set # CONFIG_PCI_GODIRECT is not set # CONFIG_PCI_GOXEN_FE is not set CONFIG_PCI_GOANY=y CONFIG_PCI_DIRECT=y CONFIG_PCI_MMCONFIG=y CONFIG_XEN_PCIDEV_FRONTEND=y # CONFIG_XEN...

Am Dienstag, den 24.06.2014, 14:27 +0200 schrieb Maarten Lankhorst: > op 24-06-14 14:23, Alexandre Courbot schreef: > > On Tue, Jun 24, 2014 at 7:55 PM, Alexandre Courbot <acourbot at nvidia.com> wrote: > >> On 06/24/2014 07:33 PM, Alexandre Courbot wrote: > >>> On 06/24/2014 07:02 PM, Russell King - ARM Linux wrote: > >>>> On Tue, Jun 24, 2014 at

Hi all, this little series removes the last swiotlb API exposed to modules. Diffstat: arch/x86/include/asm/xen/swiotlb-xen.h | 6 ------ arch/x86/kernel/pci-dma.c | 28 ++++------------------------ drivers/gpu/drm/nouveau/nouveau_ttm.c | 10 +++------- drivers/pci/xen-pcifront.c | 6 ------ kernel/dma/swiotlb.c | 1 - 5 files changed, 7

...3,11 +655,6 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm, > } > > rdev = radeon_get_rdev(ttm->bdev); > -#if IS_ENABLED(CONFIG_AGP) > - if (rdev->flags & RADEON_IS_AGP) { > - return ttm_agp_tt_populate(ttm, ctx); > - } > -#endif > > #ifdef CONFIG_SWIOTLB > if (rdev->need_swiotlb && swiotlb_nr_tbl()) { > @@ -714,12 +681,6 @@ static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm) > return; > > rdev = radeon_get_rdev(ttm->bdev); > -#if IS_ENABLED(CONFIG_AGP) > - if (rdev->flags & RADEON_IS_AGP) { &g...