search for: dma_sync_for_cpu

...Stach <dev at lynxeye.de> > > On arches with non-coherent PCI, I guess since this applies to gk20a > we need to flush caches ourselfes at "ourselves". Or perhaps even reword to something like: "..., caches need to be flushed and invalidated explicitly", since dma_sync_for_cpu() does invalidate rather than flush. > the appropriate places. Introduce two small helpers to make things easy > for TTM based drivers. > > Signed-off-by: Lucas Stach <dev at lynxeye.de> > Signed-off-by: Alexandre Courbot <acourbot at nvidia.com> > --- > drivers/...

...no_area: static int metag_dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, - struct dma_attrs *attrs) + unsigned long attrs) { unsigned long flags, user_size, kern_size; struct metag_vm_region *c; @@ -482,7 +482,7 @@ static void dma_sync_for_cpu(void *vaddr, size_t size, int dma_direction) static dma_addr_t metag_dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, - enum dma_data_direction direction, struct dma_attrs *attrs) + enum dma_data_direction direction, unsigned long attrs) { dma_sync_f...

...gt; >> On arches with non-coherent PCI, > > I guess since this applies to gk20a > >> we need to flush caches ourselfes at > > "ourselves". Or perhaps even reword to something like: "..., caches need > to be flushed and invalidated explicitly", since dma_sync_for_cpu() does > invalidate rather than flush. Rephrased as "On arches for which access to GPU memory is non-coherent, caches need to be flushed and invalidated explicitly at the appropriate places." > >> the appropriate places. Introduce two small helpers to make things easy >&g...

This small series introduces TTM helper functions as well as Nouveau hooks that are needed to ensure buffer coherency on ARM. Most of this series is a forward-port of some patches Lucas Stach sent last year and that are also needed for Nouveau GK20A support: http://lists.freedesktop.org/archives/nouveau/2013-August/014026.html Another patch takes care of flushing the CPU write-buffer when

Hi, This is third approach (complete this time) for replacing struct dma_attrs with unsigned long. The main patch (2/45) doing the change is split into many subpatches for easier review (3-43). They should be squashed together when applying. *Important:* Patchset is *only* build tested on allyesconfigs: ARM, ARM64, i386, x86_64 and powerpc. Please provide reviewes and tests for other