When patching gathers, we don't need to check against
gathers with lower indices than the current one, as
they are guaranteed to already have been handled.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tegra124 has 192 syncpoints whereas its predecessors had 32 syncpoints.
This required changes to the hardware register layout.
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
When debugfs support isn't enabled, gcc complains about some variables
being unused. To avoid further #ifdefery, move debugfs specific setup
code into static functions and use IS_ENABLED(CONFIG_DEBUG_FS) to have
the compiler, rather than the preprocessor, discard them when unused.
The advantage of doing it this way is that all the code will be
compile-tested whether or not debugfs support is enabled.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The ARCH_MULTIPLATFORM dependency was introduced back when Tegra didn't
support multiplatform yet as a means to allow the driver to be easily
compile-tested along with other DRM drivers. In the meantime, the new
COMPILE_TEST Kconfig option has been introduced for exactly that
purpose, so use that instead to clarify the intention.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Include the linux/host1x.h and dev.h headers so that function prototypes
are visible to keep sparse from suggesting that their implementations be
made static.
Signed-off-by: Thierry Reding <treding@nvidia.com>
An earlier patch added a subset of the required HW specific header files
but didn't actually include the right ones when compiling for host1x02.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Include the bus.h header, so that various function declarations are
visible in the source file that implements those functions. This keeps
sparse from suggesting that they should be made static.
Make the host1x_bus_type variable static since it isn't used globally.
Finally replace the slightly unsafe dev_set_name(dev, name) by the more
secure dev_set_name(dev, "%s", name).
Signed-off-by: Thierry Reding <treding@nvidia.com>
When building with LPAE=y (64-bit dma_addr_t), the following warnings are seen:
drivers/gpu/host1x/hw/cdma_hw.c:57:3: warning: format '%x' expects
argument of type 'unsigned int', but argument 5 has type 'dma_addr_t'
drivers/gpu/host1x/hw/debug_hw.c:167:10: warning: format '%x' expects
argument of type 'unsigned int', but argument 3 has type 'dma_addr_t'
The agreed-to solution for this is upcast to u64 and using %llx.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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 <amerilainen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Functions host1x_syncpt_request() and _host1x_syncpt_alloc() have
been taking a separate boolean flag ('client_managed') for indicating
if the syncpoint value should be tracked by the host1x driver.
This patch converts the field into generic 'flags' field so that
we can easily add more information while requesting a syncpoint.
Clients are adapted to use the new interface accordingly.
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The Tegra DRM driver currently uses some infrastructure to defer the DRM
core initialization until all required devices have registered. The same
infrastructure can potentially be used by any other driver that requires
more than a single sub-device of the host1x module.
Make the infrastructure more generic and keep only the DRM specific code
in the DRM part of the driver. Eventually this will make it easy to move
the DRM driver part back to the DRM subsystem.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Expose the buffer objects, syncpoint and channel functionality in the
public public header so that drivers can use them.
Signed-off-by: Thierry Reding <treding@nvidia.com>
This structure derives from host1x_client. DRM-specific fields are moved
from host1x_client to this structure, so that host1x_client can remain
agnostic of DRM.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Rename the host1x_to_drm_bo() macro to host1x_to_tegra_bo() for
consistency and fixup various stylistic issues.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Other drivers use the tegra- prefix in their names, so add it to this
driver's name as well for consistency.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Rework the address table code for the host1x firewall. The previous
implementation allocated a bitfield but didn't check for a valid pointer
so it could potentially crash. Instead, embed a static bitmap within the
gr2d structure to avoid the allocation and use the Linux bitmap API to
reduce code complexity.
Don't annotate the driver's .remove() function __exit. Even if built in
the driver can be unloaded via sysfs, so .remove() needs to stick around
after initialization. Also remove the explicit initialization of the
driver's .owner field to THIS_MODULE because that's now handled by the
driver core.
Furthermore make an error message more consistent with other subdrivers,
index the syncpts array for better readability, remove a gratuituous
newline and reorder some variable declarations to make the code easier
to read.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The same code sequence is used in various places to validate a register
access in the command stream. This can be refactored into a separate
function.
Signed-off-by: Thierry Reding <treding@nvidia.com>
