kernel/linux.git/drivers/gpu/drm/tegra/falcon.c, branch linux-7.0.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-7.0.y2025-05-07T15:47:36+00:00drm/tegra: falcon: Pipeline firmware copy2025-05-07T15:47:36+00:00Mikko Perttunenmperttunen@nvidia.com2025-02-05T06:10:27+00:00urn:sha1:408ec8e406d980b073f7c2d6144fdddbb093d4fd
The Falcon DMA engine allows queueing multiple operations for
improved performance. Do this to optimize firmware loading.
A performance improvement of 4x to 6x is observed.
Co-developed-by: Ivan Raul Guadarrama <iguadarrama@nvidia.com>
Signed-off-by: Ivan Raul Guadarrama <iguadarrama@nvidia.com>
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20250205061027.1205748-1-mperttunen@nvidia.com
drm/tegra: falcon: Set DMACTX field on DMA transactions2022-07-08T14:27:52+00:00Mikko Perttunenmperttunen@nvidia.com2022-06-27T14:19:51+00:00urn:sha1:e078d8d6c3849019b927edb5beeca38dea00050c
The DMACTX field determines which context, as specified in the
TRANSCFG register, is used. While during boot it doesn't matter
which is used, later on it matters and this value is reused by
the firmware.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drm/tegra: Fix cast to restricted __le322022-02-17T06:32:57+00:00Jon Hunterjonathanh@nvidia.com2022-02-16T09:17:43+00:00urn:sha1:16693c1b2d98cebc8dedf03b49d1053cf1826c86
Sparse warns about the following cast in the function
falcon_copy_firmware_image() ...
drivers/gpu/drm/tegra/falcon.c:66:27: warning: cast to restricted __le32
Fix this by casting the firmware data array to __le32 instead of u32.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drm/tegra: falcon: Support newer VIC firmware2021-01-15T16:15:50+00:00Mikko Perttunenmperttunen@nvidia.com2021-01-12T11:37:06+00:00urn:sha1:58ef3aeb9ac3b2c542d85a2e6b4af8ff12c09b68
Support newer VIC firmware by accepting the new magic number 0x10fe,
loading the full code segment instead of just the first page at boot
time, and skipping FCE setup if the firmware header indicates that
FCE is handled internally by the firmware.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drm/tegra: falcon: Clarify address usage2019-10-29T14:04:36+00:00Thierry Redingtreding@nvidia.com2019-10-28T12:37:16+00:00urn:sha1:d972d6247628054f4a9f05c084a1f52de9df209d
Rename paddr -> iova and vaddr -> virt to make it clearer how these
addresses are used. This is important for a subsequent patch that makes
a distinction between the physical address (physical address of the
system memory from the CPU's point of view) and the IOVA (physical
address of the system memory from the device's point of view).
Signed-off-by: Thierry Reding <treding@nvidia.com>
drm/tegra: Remove memory allocation from Falcon library2019-10-29T14:04:36+00:00Thierry Redingtreding@nvidia.com2019-10-28T12:37:15+00:00urn:sha1:20e7dce255e96a4d58168cf48e20210146dacf23
Having to provide allocator hooks to the Falcon library is somewhat
cumbersome and it doesn't give the users of the library a lot of
flexibility to deal with allocations. Instead, remove the notion of
Falcon "operations" and let drivers deal with the memory allocations
themselves.
Signed-off-by: Thierry Reding <treding@nvidia.com>
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 5002019-06-19T15:09:55+00:00Thomas Gleixnertglx@linutronix.de2019-06-04T08:11:33+00:00urn:sha1:d2912cb15bdda8ba4a5dd73396ad62641af2f520
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/tegra: falcon: Wait for memory scrubbing to complete2018-11-29T16:11:49+00:00Thierry Redingtreding@nvidia.com2018-11-23T12:06:39+00:00urn:sha1:b91bf997ea6efe9c48540572d693415fddaf0c3a
Before booting the Falcon processor, make sure to wait for memory
scrubbing to complete.
Signed-off-by: Thierry Reding <treding@nvidia.com>
drm/tegra: falcon: Fix error handling2018-11-29T16:11:49+00:00Thierry Redingtreding@nvidia.com2018-11-23T12:06:38+00:00urn:sha1:4eab8c0ebd384f080cce2ee466356b446acb283f
The ->alloc() callback in struct falcon_ops returns an ERR_PTR()-encoded
error code on failure, so it needs to be properly checked for, otherwise
subsequent code may dereference an invalid pointer.
Signed-off-by: Thierry Reding <treding@nvidia.com>
drm/tegra: Add falcon helper library2017-04-05T16:11:47+00:00Arto Merilainenamerilainen@nvidia.com2016-12-14T11:16:12+00:00urn:sha1:8746f6593d42d67e7cb7ef1f66003738a7357cc8
Add a set of falcon helper routines for use by the tegradrm client drivers
of the various falcon-based engines.
The falcon is a microcontroller that acts as a frontend for the rest of a
particular Tegra engine. In order to properly utilize these engines, the
frontend must be booted before pushing any commands.
Based on work by Andrew Chew <achew@nvidia.com>
Signed-off-by: Andrew Chew <achew@nvidia.com>
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>