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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 <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Steve Winslow <[email protected]>
Reviewed-by: Richard Fontana <[email protected]>
Reviewed-by: Alexios Zavras <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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If SMMU support is not available, fall back to programming the bypass
stream ID (0x7f).
Fixes: de5469c21ff9 ("gpu: host1x: Program the channel stream ID")
Suggested-by: Mikko Perttunen <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Mikko Perttunen <[email protected]>
[[email protected]: rebase this on top of a later build fix]
Signed-off-by: Thierry Reding <[email protected]>
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In case the IOMMU API is not available compiling host1x fails with
the following error:
In file included from drivers/gpu/host1x/hw/host1x06.c:27:
drivers/gpu/host1x/hw/channel_hw.c: In function ‘host1x_channel_set_streamid’:
drivers/gpu/host1x/hw/channel_hw.c:118:30: error: implicit declaration of function
‘dev_iommu_fwspec_get’; did you mean ‘iommu_fwspec_free’? [-Werror=implicit-function-declaration]
struct iommu_fwspec *spec = dev_iommu_fwspec_get(channel->dev->parent);
^~~~~~~~~~~~~~~~~~~~
iommu_fwspec_free
Fixes: de5469c21ff9 ("gpu: host1x: Program the channel stream ID")
Signed-off-by: Stefan Agner <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Tegra186 and later support 40 bits of address space. Additional
registers need to be programmed to store the full 40 bits of push
buffer addresses.
Since command stream gathers can also reside in buffers in a 40-bit
address space, a new variant of the GATHER opcode is also introduced.
It takes two parameters: the first parameter contains the lower 32
bits of the address and the second parameter contains bits 32 to 39.
Signed-off-by: Thierry Reding <[email protected]>
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When processing command streams, make sure the host1x's stream ID is
programmed for the channel so that addresses are properly translated
through the SMMU.
Signed-off-by: Thierry Reding <[email protected]>
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The register region allocated per channel was decreased from 16384 bytes
to 256 bytes on Tegra186 and later. Resize the region to make sure every
channel (instead of only the first) is properly programmed.
Suggested-by: Mikko Perttunen <[email protected]>
Reviewed-by: Mikko Perttunen <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Functions taking a pointer to a host1x syncpoint as an argument don't
need to specify a pointer to a host1x instance because it can be
obtained from the syncpoint.
Reviewed-by: Dmitry Osipenko <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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The job submission userspace ABI doesn't support this and there are no
plans to implement it, so all of this code is dead and can be removed.
Reviewed-by: Dmitry Osipenko <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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The gather filter is a feature present on Tegra124 and newer where the
hardware prevents GATHERed command buffers from executing commands
normally reserved for the CDMA pushbuffer which is maintained by the
kernel driver.
This commit enables the gather filter on all supporting hardware.
Signed-off-by: Mikko Perttunen <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Since Tegra186 the Host1x hardware allows syncpoints to be assigned to
specific channels, preventing any other channels from incrementing
them.
Enable this feature where available and assign syncpoints to channels
when submitting a job. Syncpoints are currently never unassigned from
channels since that would require extra work and is unnecessary with
the current channel allocation model.
Signed-off-by: Mikko Perttunen <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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This is largely a rewrite of the Host1x channel allocation code, bringing
several changes:
- The previous code could deadlock due to an interaction
between the 'reflock' mutex and CDMA timeout handling.
This gets rid of the mutex.
- Support for more than 32 channels, required for Tegra186
- General refactoring, including better encapsulation
of channel ownership handling into channel.c
Signed-off-by: Mikko Perttunen <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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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 <[email protected]>
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IDs can never be negative so use unsigned int. In some instances an
explicitly sized type (such as u32) was used for no particular reason,
so turn those into unsigned int as well for consistency.
Signed-off-by: Thierry Reding <[email protected]>
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Rather than cast to a u32 use the struct host1x_bo pointers directly.
This avoid annoying warnings for 64-bit builds.
Signed-off-by: Thierry Reding <[email protected]>
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This patch adds support for hardware syncpoint bases. This creates
a simple mechanism to stall the command FIFO until an operation is
completed.
Signed-off-by: Arto Merilainen <[email protected]>
Reviewed-by: Terje Bergstrom <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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This is slightly safer than adding -Idrivers/gpu/host1x to cflags-y.
Signed-off-by: Thierry Reding <[email protected]>
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Expose the buffer objects, syncpoint and channel functionality in the
public public header so that drivers can use them.
Signed-off-by: Thierry Reding <[email protected]>
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In preparation to support host1x clients other than DRM, move this
header into a public location.
Signed-off-by: Thierry Reding <[email protected]>
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Add support for host1x debugging. Adds debugfs entries, and dumps
channel state to UART in case of stuck job.
Signed-off-by: Arto Merilainen <[email protected]>
Signed-off-by: Terje Bergstrom <[email protected]>
Reviewed-by: Thierry Reding <[email protected]>
Tested-by: Thierry Reding <[email protected]>
Tested-by: Erik Faye-Lund <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Add support for host1x client modules, and host1x channels to submit
work to the clients.
Signed-off-by: Arto Merilainen <[email protected]>
Signed-off-by: Terje Bergstrom <[email protected]>
Reviewed-by: Thierry Reding <[email protected]>
Tested-by: Thierry Reding <[email protected]>
Tested-by: Erik Faye-Lund <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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