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path: root/drivers/video/tegra/nvmap
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2011-08-19video: tegra: nvmap: single page allocation policy correctedKirill Artamonov
When user doesn't use default heap policy and selects GART or carveout allocation, automatic single-page-to-sysmem rule doesn't work. Because of broken rule many single page allocations take extra space in carveout and create unnecessary page mappings in GART and SMMU. The fix adds sysmem bit to heap mask when allocation is single page and GART or carveout is present in heap mask. bug 730124 bug 731923 The change also does sanity check of available system memory before adding sysmem bit for carveout allocations. bug 777839 Reviewed-on: http://git-master/r/31383 (cherry picked from commit 502c2becc54b49d26371f9b167f0c6f82a1bc37f) Bug 844307 Conflicts: drivers/video/tegra/nvmap/nvmap_handle.c Reviewed-on: http://git-master/r/38429 (cherry picked from commit ddfc93d27830a28a1c9786fd5bce6dc35727e9ff) Change-Id: I9b8f84a5a7daf192d1d412926f91e5de71938818 Reviewed-on: http://git-master/r/47829 Reviewed-by: Andre Sihera <asihera@nvidia.com> Tested-by: Andre Sihera <asihera@nvidia.com> Reviewed-by: Kirill Artamonov <kartamonov@nvidia.com> Reviewed-by: Krishna Reddy <vdumpa@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2011-05-16nvrm: move stale wait checking into the kerneltegra-11.2.6Chris Johnson
The kernel now receives wait tracking data (similar to gathers and relocs) and compares the current syncpt with the threshold value. If it's old, it gets a kernel mapping and rewrites the method data to use a kernel reserved syncpt that is always 0 (so trivially pops when seen by the HW). Bug 519650 Bug 785525 Bug 803452 Note: reset the author in this commit to fix a email addr problem and since from the latest/last cherry pick there was a reworking of the code to be compatible with different user space versions it also seemed reasonable. (cherry picked from commit 4069d8e67665624ad3dceb628e572980dd57acd0) (cherry picked from commit 6e4336408588e348804a62e53386acc9abc06823) (cherry picked from commit 87a9efe751716ca741caac72b9061fdfdcec540a) Change-Id: I9c6076da2384f373d5f402bee4406b09b4ebc4ff Reviewed-on: http://git-master/r/23159 Reviewed-on: http://git-master/r/30281 Tested-by: Chris Johnson <cwj@nvidia.com> Reviewed-by: Ken Adams <kadams@nvidia.com> Reviewed-by: Prajakta Gudadhe <pgudadhe@nvidia.com>
2011-04-14video: tegra: nvmap: debugfs improvementDonghan Ryu
nvmap's debugfs had a bad format so it was very difficult to read the outputs. this commit fixes it and added total allocation size along with it Bug 813891 Change-Id: I6e3165b3ff917d9510d39f1e35b8e6b59c086592 Reviewed-on: http://git-master/r/27349 Reviewed-by: Donghan Ryu <dryu@nvidia.com> Tested-by: Donghan Ryu <dryu@nvidia.com> Reviewed-by: Krishna Reddy <vdumpa@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2011-03-21Revert "Revert "Revert "tegra: host: move stale wait checking into the kernel"""Nitin Kumbhar
This reverts commit be7b9ce20d645c2c9293441830ee33a0a5fc489f.
2011-03-21merging android-tegra-2.6.36 into git-master/linux-2.6/android-tegra-2.6.36Nitin Kumbhar
Change-Id: I517760af5756279b41836062063bdcaa04e5bfef
2011-03-18tegra:video:nvmap: optimize cache_maint operation.vdumpa
video:tegra:nvmap: Clean whole L1 instead of cleaning by MVA For large allocations, cleaning each page of the allocation can take a significant amount of time. If an allocation that nvmap needs to clean or invalidate out of the cache is significantly larger than the cache, just flush the entire cache by set/ways. bug 788967 Reviewed-on: http://git-master/r/19354 (cherry picked from commit c01c12e63b1476501204152356867aeb5091fb80) tegra:video:nvmap: optimize cache_maint operation. optimize cache_maint operation for carveout and heap memories. flush carveout memory allocations on memory free. Bug 761637 Reviewed-on: http://git-master/r/21205 Conflicts: drivers/video/tegra/nvmap/nvmap_dev.c drivers/video/tegra/nvmap/nvmap_heap.c drivers/video/tegra/nvmap/nvmap_ioctl.c (cherry picked from commit 731df4df5e895e1d4999359d6d5939fc2095f883) tegra:video:nvmap: optimize cache flush for system heap pages. optimize cache flush for pages allocated from system heap. Bug 788187 Reviewed-on: http://git-master/r/21687 (cherry picked from commit 3f318911ad91410aed53c90494210e2b8f74308b) Change-Id: Ia7b90ba0b50acfef1b88dd8095219c51733e027f Reviewed-on: http://git-master/r/23465 Reviewed-by: Kirill Artamonov <kartamonov@nvidia.com> Tested-by: Kirill Artamonov <kartamonov@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2011-03-16video:tegra:nvmap: Allow mapping uc/wc memory as wb.vdumpa
Bug 786016 Change-Id: Ic72c57b710a305851dfea3dda3eb217156683b39 Reviewed-on: http://git-master/r/17795 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2011-03-08cleanup: Change source file permissions to 0644Dan Willemsen
Change-Id: Id030cc94db62c9dcaa79a2ddd7c034ac9f9adc61 Reviewed-on: http://git-master/r/21803 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2011-03-08Revert "Revert "tegra: host: move stale wait checking into the kernel""Rebecca Schultz Zavin
This reverts commit b3cc1d84d0b962fe80fc297d2e2417c3157508b6.
2011-03-03Revert "tegra: host: move stale wait checking into the kernel"Rebecca Schultz Zavin
This reverts commit 2d49bf33f3885aab293f12d54447f66e911e3226.
2011-03-02tegra: host: move stale wait checking into the kernelPrajakta Gudadhe
The kernel now receives wait tracking data (similar to gathers and relocs) and compares the current syncpt with the threshold value. If it's old, it gets a kernel mapping and rewrites the method data to use a kernel reserved syncpt that is always 0 (so trivially pops when seen by the HW). Patch has dependency to the user-space patches Submitted on behalf of: Chris Johnson <cjohnson@nvidia.com> original work by: Chris Johnson <cjohnson@nvidia.com> Change-Id: I4d4e5d3b49cab860485c4172f87247f5b4f5ea6e
2011-02-18video: tegra: nvmap: fix potential deadlockKirill Artamonov
Enabled mutex debugging reavealed potential deadlocks introduced with compaction. Handle spin lock replaced with mutex. Heap functions cannot be protected with spinlock because they call kernel slab allocation functions which cannot be called from atomic context. nvmap_client ref_lock is also replaced with mutex. Otherwise we cannot access heap parameters protected by mutex nvmap_handle lock. Extra locking for handle->owner removed. bug 793364 Change-Id: I635ce9ebf259dd7bf8802457567f93b7be5795ea Reviewed-on: http://git-master/r/19850 Reviewed-by: Kirill Artamonov <kartamonov@nvidia.com> Tested-by: Kirill Artamonov <kartamonov@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com>
2011-02-16video: tegra: nvmap: replace mutex with spinlockKirill Artamonov
There are places where nvmap_free_handle_id is called when interrupts are disabled and mutex cannot be used as nvmap handle lock. Change-Id: Icc220fe627c08f21c677d936a54f70c818dc8e8c Reviewed-on: http://git-master/r/19489 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2011-02-15merging android-tegra-2.6.36 into git-master/linux-2.6/android-tegra-2.6.36Nitin Kumbhar
Conflicts: drivers/net/wireless/bcm4329/Makefile Change-Id: I13ed89657bb43ac906c6424372050df5fd681374
2011-02-14video: tegra: nvmap: Fix broken optimizationkartamonov
An attempt had been made to reduce the number of pte operations while patching relocs. The optimization was incorrectly coded and was not providing the expected speedup. Credit for the find goes to Peter Pipkorn. Change-Id: Ic83b20ee470e54d5053f747dbcbdf7b038b7c7c4 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2011-02-11nvmap: implementing K36 carveout compactorKirill Artamonov
bug 762482 Change-Id: Ifadebc1b0c4eb0df89e179091acca0ff6e527e56 Reviewed-on: http://git-master/r/15743 Reviewed-by: Kirill Artamonov <kartamonov@nvidia.com> Tested-by: Kirill Artamonov <kartamonov@nvidia.com> Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
2011-02-04merging android-tegra-2.6.36 into git-master/linux-2.6/android-tegra-2.6.36Nitin Kumbhar
Conflicts: arch/arm/mach-tegra/include/mach/dc.h drivers/video/tegra/dc/hdmi.c drivers/video/tegra/host/nvhost_acm.c Change-Id: Iddf74984cc02f08dca3738967c0580ba7c375337
2011-01-28[video: tegra: nvmap] perform cache maintenance for rw_handleMinwuk Lee
Need cache maintenance on rw_handle to remove display garbage issue which happens randomly. Bug 778138 Change-Id: I227913d1e49d7c28a1a776e2b946cfa0cc7e9803 Reviewed-on: http://git-master/r/17236 Reviewed-by: Niket Sirsi <nsirsi@nvidia.com> Tested-by: Niket Sirsi <nsirsi@nvidia.com>
2011-01-28nvmap: Optionally check global list for IOC_GET_IDRobert Morell
For NVMAP_IOC_GET_ID, if the requested handle isn't found in the client-private list, check the device-wide handles if allowed (global handles or superuser). The proper way to share memory between clients is to first call IOC_GET_ID from the client who owns the memory, pass the resulting ID to the new client, and then use IOC_FROM_ID in the new client to get a handle. However, some (broken) legacy applications did both IOC_GET_ID and IOC_FROM_ID steps in the new client. To support those applications but hopefully prevent new applications from growing the same behavior, the NVMAP_SEARCH_GLOBAL_HANDLES config option was added that restores the old behavior (default N). Note that even with this option enabled, the client issuing the IOC_GET_ID call must be privileged to access the handle provided. In practice, this means the global list search only works for clients who have opened the /dev/knvmap super device node. Change-Id: I6a4490de922864d9119b24e610cfa127ec64bdc7 Signed-off-by: Robert Morell <rmorell@nvidia.com> Reviewed-on: http://git-master/r/14431 Reviewed-by: Niket Sirsi <nsirsi@nvidia.com> Tested-by: Niket Sirsi <nsirsi@nvidia.com>
2011-01-24video: tegra: nvmap: Several changes to carveout killerRebecca Schultz Zavin
-Add a module param to enable/disable carveout killer -Fix race condition in code to wait for something to free memory after firing carveout killer -Fix the check for current so we always compare task->group_leaders Change-Id: Ie030978827dce6b0fbbfa1db0d80e4abe59eaa51 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2011-01-12video: tegra: nvmap: Several fixes to the carveout killerRebecca Schultz Zavin
-Modify the carveout killer to only kill tasks with lower priorities than the one that's trying to allocate -After delivering a sigkill to a task, wait for something to exit and cleanup before retrying the allocation Change-Id: If62b6ed008a73fc3c347ff26735a83eee284909e Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2011-01-12video: tegra: nvmap: Don't store task struct for kernel threadsRebecca Schultz Zavin
No need to maintain a reference to the task struct if the client is a kernel thread. In this case just set the task to NULL. Change-Id: Ica4785388932f6b298eeb0da04b78b0e1cdc3a44 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2011-01-10video: tegra: nvmap: Add carveout killerRebecca Schultz Zavin
This change attempts to reclaim carveout memory by killing other carveout users when an allocation fails. Processes are killed in order of priority from lowest to highest, and then from largest to smallest users. Change-Id: Iee8a6f36269bc8165d691000a153dbf9f4337775 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-12-17video: tegra: nvmap: Add logging to some error conditionsRebecca Schultz Zavin
Change-Id: I1ec34fd4a6bb21a6d84912a7228c209f459261be Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-12-06video: tegra: nvmap: Clear handle->owner on releaseRobert Morell
A struct nvmap_handle may be shared by multiple clients. If the original client (the handle "owner") is destroyed, but the handle is still referenced by other clients, h->owner points to freed memory. To prevent this, clear h->owner when the owner frees its reference to that struct nvmap_handle. Change-Id: I54722091568ce2058f5988e5f6e00e68605a8100 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-12-06video: tegra: nvmap: Fix per client accountingRebecca Schultz Zavin
Fix the way the total number of carveout allocations is managed per client. Change-Id: I3e12e2a98a74cafc1f4c51a48e3c3c549e930160 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-11-05Revert "tegra: video: nvmap: Printk if nvmap alloc fails"Rebecca Schultz Zavin
This reverts commit e3ad53ad739afae7e8a4252c807a195e2311cfa7.
2010-11-05video: tegra: nvmap: Add names to nvmap clientRebecca Schultz Zavin
This modifies the api to allow the user to specify a name for their clients. This will allow the system to track allocations from the kernel by name. Change-Id: I44aad209bc54e72126be3bebfe416b30291d206c Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-11-05video: tegra: nvmap: Move debug info to debugfsRebecca Schultz Zavin
Moves the file tracking clients to debugfs Add a debugfs file to track the list of allocations per client Change-Id: I2bb683e3ac0599fa05d962c79ef0b7cbd0007d75 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-11-03tegra: video: nvmap: Printk if nvmap alloc failsRebecca Schultz Zavin
Prints a log message if the nvmap allocate ioctl fails. Change-Id: Ia0777bc2fcd665dafff0f8948b01faad3f552d72 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-10-28video: tegra: nvmap: Fix handle ref countingRebecca Schultz Zavin
In the current implementation handles hold references to a client and clients hold references to their handles. As a result when a process terminates it's handles can't be cleaned up and we leak memory. Instead only hold references to handles from clients. Change-Id: Iba699e740a043deaf0a78b13b4ea01544675078f Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-10-28video: tegra: nvmap: Track carveout clientsRebecca Schultz Zavin
This patch adds the ability to track the total allocations in a given carveout heap by client. It also adds a sys file to print the list of clients, their pids and their respective carveout sizes Change-Id: I34fc97c3be574d2bd30d7594320ff05f6e13c476 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-10-20video: tegra: nvmap: Prevent reverting to sysmem for small allocationsColin Cross
Change-Id: Icfe552ad4a968329a1a2959d5b438062587a83b6 Signed-off-by: Colin Cross <ccross@android.com>
2010-10-20video: tegra: nvmap: Remove warning from nvmap_pinRebecca Schultz Zavin
The framebuffer driver needs to be able to arbitrarily pin whatever gets handed to it. Regardless of the interface used, functions need to unpin as soon as they finish using the gart anyway. Change-Id: Ida8aea2fb6eaca8bcbf3ae72f8dfa849dc198542 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-10-19video: tegra: nvmap: eliminate arm_attrib_allocator dependencyGary King
remove the dependency that nvmap has on the arm_attrib_allocator and the lowmem in PTEs change by adding a private page allocator utility function and calling vm_map_ram unconditionally for all sysmem handles. also, add Kconfig variables to allow platforms to disallow the SYSMEM heap, and to optionally restrict the SYSMEM and IOVMM heaps to just HIGHMEM. Change-Id: I3dab1c7323f54a8ab3994dc672b27fd79a9057d7 Signed-off-by: Gary King <gking@nvidia.com>
2010-10-12video: tegra: nvmap: Only allow allocations out of highmemRebecca Schultz Zavin
Low mem pages are allocated in larger super pages and their caching attributes can't be controlled on a per page basis. This patch forces nvmap to map out of highmem pages which are guaranteed to have page mappings. Change-Id: Id3921342ecceb0345d43365d4dd90b82ca8cfd11 Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2010-10-11video: tegra: nvmap: fix read failures, super user and noref pinningGary King
a >= vs > error when checking the operating region of the read and write ioctls was causing failures when reading the last byte of a handle. the super-user node (knvmap) wasn't registered correctly due to a cut- and-paste error, and the regular user node was assigned super-user priveleges. noref pinning wasn't correctly validating that the specified handle existed before pinning it, which caused the reference count for the handle to become imbalanced on a subsequent unpin Change-Id: I9985b85023705b00389a53fb962c3b60d62da6b8 Signed-off-by: Gary King <gking@nvidia.com>
2010-10-08video: tegra: add GPU memory management driver (nvmap)Gary King
nvmap provides an interface for user- and kernel-space clients to allocate and access memory "handles" which can be pinned to enable the memory to be shared with DMA devices on the system, and may also be mapped (using caller-specified cache attributes) so that they are directly accessible by the CPU. the memory handle object gives clients a common API to allocate from multiple types of memory: platform-reserved physically contiguous "carveout" memory, physically contiguous (order > 0) OS pages, or physically discontiguous order-0 OS pages that can be remapped into a contiguous region of the DMA device's virtual address space through the tegra IOVMM subsystem. unpinned and unmapped memory handles are relocatable at run-time by the nvmap system. handles may also be shared between multiple clients, allowing (for example) a window manager and its client applications to directly share framebuffers Change-Id: Ie8ead17fe7ab64f1c27d922b1b494f2487a478b6 Signed-off-by: Gary King <gking@nvidia.com>
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