kernel/linux.git/drivers/gpu/host1x/cdma.c, branch v4.19.112

gpu: host1x: Store pointer to client in jobs

2018-05-18T19:50:24+00:00

Rather than storing some identifier derived from the application context that can't be used concretely anywhere, store a pointer to the client directly so that accesses can be made directly through that client object. Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Fix compiler errors by converting to dma_addr_t

2018-05-18T09:23:48+00:00

The compiler is complaining with the following errors: drivers/gpu/host1x/cdma.c:94:48: error: passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type [-Werror=incompatible-pointer-types] drivers/gpu/host1x/cdma.c:113:48: error: passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type [-Werror=incompatible-pointer-types] The expected pointer type of the third argument to dma_alloc_wc() is dma_addr_t but phys_addr_t is passed. Change the phys member of struct push_buffer to be dma_addr_t so that we pass the correct type to dma_alloc_wc(). Also check pb->mapped for non-NULL in the destroy function as that is the right way of checking if dma_alloc_wc() was successful. Signed-off-by: Emil Goode Signed-off-by: Thierry Reding

gpu: host1x: Fix dma_free_wc() argument in the error path

2018-05-17T15:44:48+00:00

If IOVA allocation or IOMMU mapping fails, dma_free_wc() is invoked with size=0 because of a typo, that triggers "kernel BUG at mm/vmalloc.c:124!". Signed-off-by: Dmitry Osipenko Reviewed-by: Mikko Perttunen Signed-off-by: Thierry Reding

gpu: host1x: Add IOMMU support

2017-04-05T16:11:43+00:00

Add support for the Host1x unit to be located behind an IOMMU. This is required when gather buffers may be allocated non-contiguously in physical memory, as can be the case when TegraDRM is also using the IOMMU. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding

gpu: host1x: Whitespace cleanup for readability

2016-06-23T09:59:30+00:00

Insert a number of blank lines in places where they increase readability of the code. Also collapse various variable declarations to shorten some functions and finally rewrite some code for readability. Signed-off-by: Thierry Reding

gpu: host1x: Fix a couple of checkpatch warnings

2016-06-23T09:59:28+00:00

Fix a couple of occurrences where no blank line was used to separate variable declarations from code or where block comments were wrongly formatted. Signed-off-by: Thierry Reding

gpu: host1x: cdma: Drop unnecessary local variable

2016-06-23T09:59:27+00:00

The local 'pos' variable doesn't serve any purpose other than being a shortcut for pb->pos, but the result doesn't remove much, so simply drop the local variable. Signed-off-by: Thierry Reding

dma, mm/pat: Rename dma__writecombine() to dma__wc()

2016-03-09T13:57:51+00:00

Rename dma_*_writecombine() to dma_*_wc(), so that the naming is coherent across the various write-combining APIs. Keep the old names for compatibility for a while, these can be removed at a later time. A guard is left to enable backporting of the rename, and later remove of the old mapping defines seemlessly. Build tested successfully with allmodconfig. The following Coccinelle SmPL patch was used for this simple transformation: @ rename_dma_alloc_writecombine @ expression dev, size, dma_addr, gfp; @@ -dma_alloc_writecombine(dev, size, dma_addr, gfp) +dma_alloc_wc(dev, size, dma_addr, gfp) @ rename_dma_free_writecombine @ expression dev, size, cpu_addr, dma_addr; @@ -dma_free_writecombine(dev, size, cpu_addr, dma_addr) +dma_free_wc(dev, size, cpu_addr, dma_addr) @ rename_dma_mmap_writecombine @ expression dev, vma, cpu_addr, dma_addr, size; @@ -dma_mmap_writecombine(dev, vma, cpu_addr, dma_addr, size) +dma_mmap_wc(dev, vma, cpu_addr, dma_addr, size) We also keep the old names as compatibility helpers, and guard against their definition to make backporting easier. Generated-by: Coccinelle SmPL Suggested-by: Ingo Molnar Signed-off-by: Luis R. Rodriguez Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bhelgaas@google.com Cc: bp@suse.de Cc: dan.j.williams@intel.com Cc: daniel.vetter@ffwll.ch Cc: dhowells@redhat.com Cc: julia.lawall@lip6.fr Cc: konrad.wilk@oracle.com Cc: linux-fbdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: luto@amacapital.net Cc: mst@redhat.com Cc: tomi.valkeinen@ti.com Cc: toshi.kani@hp.com Cc: vinod.koul@intel.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1453516462-4844-1-git-send-email-mcgrof@do-not-panic.com Signed-off-by: Ingo Molnar

gpu: host1x: Make mapped field of push buffers void *

2014-11-13T15:11:35+00:00

This reduces the amount of casting that needs to be done to get rid of annoying warnings on 64-bit builds. Signed-off-by: Thierry Reding

gpu: host1x: Expose syncpt and channel functionality

2013-10-31T08:20:11+00:00

Expose the buffer objects, syncpoint and channel functionality in the public public header so that drivers can use them. Signed-off-by: Thierry Reding