linux/drivers/gpu/host1x/dev.c, branch v5.6

gpu: host1x: Remove dev_err() on platform_get_irq() failure

2020-01-10T16:05:12Z

platform_get_irq() will call dev_err() itself on failure, so there is no need for the driver to also do this. This is detected by coccinelle. Signed-off-by: YueHaibing Signed-off-by: Thierry Reding

gpu: host1x: Set DMA mask based on IOMMU setup

2019-10-29T14:04:35Z

If the Tegra DRM clients are backed by an IOMMU, push buffers are likely to be allocated beyond the 32-bit boundary if sufficient system memory is available. This is problematic on earlier generations of Tegra where host1x supports a maximum of 32 address bits for the GATHER opcode. More recent versions of Tegra (Tegra186 and later) have a wide variant of the GATHER opcode, which allows addressing up to 64 bits of memory. If host1x itself is behind an IOMMU as well this doesn't matter because the IOMMU's input address space is restricted to 32 bits on generations without support for wide GATHER opcodes. However, if host1x is not behind an IOMMU, it won't be able to process push buffers beyond the 32-bit boundary on Tegra generations that don't support wide GATHER opcodes. Restrict the DMA mask to 32 bits on these generations prevents buffers from being allocated from beyond the 32-bit boundary. Signed-off-by: Thierry Reding

gpu: host1x: Support DMA mapping of buffers

2019-10-29T14:04:35Z

If host1x_bo_pin() returns an SG table, create a DMA mapping for the buffer. For buffers that the host1x client has already mapped itself, host1x_bo_pin() returns NULL and the existing DMA address is used. Signed-off-by: Thierry Reding

gpu: host1x: Clean up debugfs on removal

2019-10-29T14:04:34Z

The debugfs files created for host1x are never removed, causing these files to be left dangling in debugfs. This results in a crash when any of these files are accessed after the host1x driver has been removed, as well as a failure to create the debugfs entries when they are added again on driver probe. Signed-off-by: Thierry Reding

gpu: host1x: Explicitly initialize host1x_info structures

2019-10-28T10:18:33Z

It's technically not required to explicitly initialize the fields that will be zero by default, but it's easier to read these structures if they are all initialized uniformly. Signed-off-by: Thierry Reding

gpu: host1x: Do not limit DMA segment size

2019-10-28T10:18:08Z

host1x nor any its clients have any limitations on the DMA segment size, so don't pretend that they do. Signed-off-by: Thierry Reding

Merge tag 'drm/tegra/for-5.3-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

2019-06-25T02:59:43Z

drm/tegra: Changes for v5.3-rc1 This contains a couple of small improvements and cleanups for the Tegra DRM driver. Signed-off-by: Dave Airlie From: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190621150753.19550-1-thierry.reding@gmail.com

gpu: host1x: Do not output error message for deferred probe

2019-06-05T13:05:49Z

When deferring probe, avoid logging a confusing error message. While at it, make the error message more informational. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201

2019-05-30T18:29:52Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 228 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Steve Winslow Reviewed-by: Richard Fontana Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de Signed-off-by: Greg Kroah-Hartman

gpu: host1x: Support 40-bit addressing on Tegra186

2019-02-07T17:28:58Z

The host1x and clients instantiated on Tegra186 support addressing 40 bits of memory. Signed-off-by: Thierry Reding