user/sven/linux.git/drivers/memory/tegra, branch v4.4.183

memory: tegra: Fix integer overflow on tick value calculation

2019-06-11T10:23:46Z

commit b906c056b6023c390f18347169071193fda57dde upstream. Multiplying the Memory Controller clock rate by the tick count results in an integer overflow and in result the truncated tick value is being programmed into hardware, such that the GR3D memory client performance is reduced by two times. Cc: stable Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding Signed-off-by: Greg Kroah-Hartman

memory: tegra: Apply interrupts mask per SoC

2018-08-06T14:24:38Z

[ Upstream commit 1c74d5c0de0c2cc29fef97a19251da2ad6f579bd ] Currently we are enabling handling of interrupts specific to Tegra124+ which happen to overlap with previous generations. Let's specify interrupts mask per SoC generation for consistency and in a preparation of squashing of Tegra20 driver into the common one that will enable handling of GART faults which may be undesirable by newer generations. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

memory: tegra: Do not handle spurious interrupts

2018-08-06T14:24:38Z

[ Upstream commit bf3fbdfbec947cdd04b2f2c4bce11534c8786eee ] The ISR reads interrupts-enable mask, but doesn't utilize it. Apply the mask to the interrupt status and don't handle interrupts that MC driver haven't asked for. Kernel would disable spurious MC IRQ and report the error. This would happen only in a case of a very severe bug. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

Merge tag 'iommu-updates-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2015-09-09T00:22:35Z

Pull iommu updates for from Joerg Roedel: "This time the IOMMU updates are mostly cleanups or fixes. No big new features or drivers this time. In particular the changes include: - Bigger cleanup of the Domain<->IOMMU data structures and the code that manages them in the Intel VT-d driver. This makes the code easier to understand and maintain, and also easier to keep the data structures in sync. It is also a preparation step to make use of default domains from the IOMMU core in the Intel VT-d driver. - Fixes for a couple of DMA-API misuses in ARM IOMMU drivers, namely in the ARM and Tegra SMMU drivers. - Fix for a potential buffer overflow in the OMAP iommu driver's debug code - A couple of smaller fixes and cleanups in various drivers - One small new feature: Report domain-id usage in the Intel VT-d driver to easier detect bugs where these are leaked" * tag 'iommu-updates-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (83 commits) iommu/vt-d: Really use upper context table when necessary x86/vt-d: Fix documentation of DRHD iommu/fsl: Really fix init section(s) content iommu/io-pgtable-arm: Unmap and free table when overwriting with block iommu/io-pgtable-arm: Move init-fn declarations to io-pgtable.h iommu/msm: Use BUG_ON instead of if () BUG() iommu/vt-d: Access iomem correctly iommu/vt-d: Make two functions static iommu/vt-d: Use BUG_ON instead of if () BUG() iommu/vt-d: Return false instead of 0 in irq_remapping_cap() iommu/amd: Use BUG_ON instead of if () BUG() iommu/amd: Make a symbol static iommu/amd: Simplify allocation in irq_remapping_alloc() iommu/tegra-smmu: Parameterize number of TLB lines iommu/tegra-smmu: Factor out tegra_smmu_set_pde() iommu/tegra-smmu: Extract tegra_smmu_pte_get_use() iommu/tegra-smmu: Use __GFP_ZERO to allocate zeroed pages iommu/tegra-smmu: Remove PageReserved manipulation iommu/tegra-smmu: Convert to use DMA API iommu/tegra-smmu: smmu_flush_ptc() wants device addresses ...

iommu/tegra-smmu: Parameterize number of TLB lines

2015-08-13T15:05:28Z

The number of TLB lines was increased from 16 on Tegra30 to 32 on Tegra114 and later. Parameterize the value so that the initial default can be set accordingly. On Tegra30, initializing the value to 32 would effectively disable the TLB and hence cause massive latencies for memory accesses translated through the SMMU. This is especially noticeable for isochronuous clients such as display, whose FIFOs would continuously underrun. Fixes: 891846516317 ("memory: Add NVIDIA Tegra memory controller support") Signed-off-by: Thierry Reding

memory: tegra: Add Tegra210 support

2015-08-13T14:07:52Z

Add the table of memory clients and SWGROUPs for Tegra210 to enable SMMU support for this new SoC. Signed-off-by: Thierry Reding

memory: tegra: Add support for a variable-size client ID bitfield

2015-08-13T14:07:52Z

Recent versions of the Tegra MC hardware extend the size of the client ID bitfield in the MC_ERR_STATUS register by one bit. While one could simply extend the bitfield for older hardware, that would allow data from reserved bits into the driver code, which is generally a bad idea on principle. So this patch instead passes in the client ID mask from from the per-SoC MC data. There's no MC support for T210 (yet), but when that support winds up in the kernel, the appropriate soc->client_id_mask value for that chip will be 0xff. Based on an original patch by David Ung . Signed-off-by: Paul Walmsley Cc: Paul Walmsley Cc: Thierry Reding Cc: David Ung Signed-off-by: Thierry Reding

iommu/tegra-smmu: Move flush_dcache to tegra-smmu.c

2015-08-13T14:06:40Z

Drivers should not be using __cpuc_* functions nor outer_cache_flush() directly. This change partly cleans up tegra-smmu.c. The only difference between cache handling of the tegra variants is Denver, which omits the call to outer_cache_flush(). This is due to Denver being an ARM64 CPU, and the ARM64 architecture does not provide this function. (This, in itself, is a good reason why these should not be used.) Signed-off-by: Russell King [treding@nvidia.com: fix build failure on 64-bit ARM] Signed-off-by: Thierry Reding

memory: tegra: Expose supported rates via debugfs

2015-07-16T07:51:47Z

In order to ease testing, expose the list of supported EMC frequencies via debugfs. Reviewed-by: Tomeu Vizoso Signed-off-by: Thierry Reding

Merge tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

2015-05-13T15:59:35Z

Merge "ARM: tegra: Add EMC driver for v4.2-rc1" from Thierry Reding: This introduces the EMC driver that's required to scale the external memory frequency. * tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: memory: tegra: Add EMC frequency debugfs entry memory: tegra: Add EMC (external memory controller) driver memory: tegra: Add API needed by the EMC driver of: Add Tegra124 EMC bindings of: Document timings subnode of nvidia,tegra-mc