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path: root/drivers/gpu/drm/etnaviv/etnaviv_buffer.c (follow)
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2018-12-18drm/etnaviv: remove lastctx member from gpu structLucas Stach1-2/+0
It only written and we don't infer any useful information from it anymore. Remove it. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2018-05-18drm/etnaviv: replace license text with SPDX tagsLucas Stach1-14/+2
This replaces the repetitive GPL-2.0 license text in code and header files with the SPDX tags. Generated hardware headers aren't changed, as any changes there need to be done in the upstream rnndb repository. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2018-03-09drm/etnaviv: add function to load the initial PTA stateLucas Stach1-0/+18
On GPUs with the security feature the MTLB config is stored in the PTA. Add a function to trigger the initial PTA load through the FE. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2018-01-02drm/etnaviv: move cmdbuf into submit objectLucas Stach1-5/+5
Less dynamic allocations and slims down the cmdbuf object to only the required information, as everything else is already available in the submit object. This also simplifies buffer and mappings lifetime management, as they are now exlusively attached to the submit object and not additionally to the cmdbuf. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2018-01-02drm/etnaviv: move exec_state to submit objectLucas Stach1-5/+5
We'll need this in some places where only the submit is available. Also this is a first step at slimming down the cmdbuf object. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2018-01-02drm/etnaviv: add lockdep annotations to buffer manipulation functionsLucas Stach1-0/+12
When manipulating the kernel command buffer the GPU mutex must be held, as otherwise different callers might try to replace the same part of the buffer, wreacking havok in the GPU execution. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-01-02drm/etnaviv: remove switch_context member from etnaviv_gpuLucas Stach1-4/+6
There is no need to store this in the gpu struct. MMU flushes are triggered correctly in reaction to MMU maps and unmaps, independent of the current ctx. Any required pipe switches can be infered from the current and the desired GPU exec state. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2017-10-10drm/etnaviv: add 'sync point' supportChristian Gmeiner1-0/+36
In order to support performance counters in a sane way we need to provide a method to sync the GPU with the CPU. The GPU can process multpile command buffers/events per irq. With the help of a 'sync point' we can trigger an event and stop the GPU/FE immediately. When the CPU is done with is processing it simply needs to restart the FE and the GPU will process the command stream. Changes from v1 -> v2: - process sync point with a work item to keep irq as fast as possible Changes from v4 -> v5: - renamed pmrs_* to sync_point_* - call event_free(..) in sync_point_worker(..) Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2017-02-02drm/etnaviv: wire up iova handling in new cmdbuf abstractionLucas Stach1-6/+7
Don't call the IOMMU directly, but go through the new cmdbuf abstraction. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2017-02-02drm/etnaviv: move cmdbuf de-/allocation into own fileLucas Stach1-0/+1
This will get more complex with the following changes, so move it into its own place. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2016-10-10drm/etnaviv: ensure write caches are flushed at end of user cmdstreamLucas Stach1-5/+19
If the GPU is done with one user command stream the buffers referenced by this command stream may go away and get unmapped from the MMU. If the write caches are still dirty at this point later evictions will run into MMU faults, killing the GPU. Make sure the write caches are flushed before signaling completion of the user command stream. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-09-15drm/etnaviv: add flushing logic for MMUv2Lucas Stach1-8/+23
Flushing works differently on MMUv2, in that it's only necessary to set a single bit in the control register to flush all translation units. A semaphore stall then makes sure that the flush has propagated properly. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-09-15drm/etnaviv: add function to construct MMUv2 init bufferLucas Stach1-0/+34
Both the safe/scratch address and the master TLB address are per pipe with the CPU mapped registers not properly propagating to the different translation units. The only way to correctly configure all translation units is to have a command stream snipped executed by the FE, before any other execution can start. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-09-15drm/etnaviv: move gpu_va() to etnaviv mmuLucas Stach1-10/+6
The GPU virtual address for the command buffers differs depending on the IOMMU version. Move the calculation of the iova into etnaviv mmu, to enable proper dispatch. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: improve readability of command insertion to ring bufferRussell King1-46/+49
Improve the readibility of the function which inserts command buffers and other maintanence commands into the GPUs ring buffer. We do this by splitting the ring buffer reservation in two: one chunk for any commands that need to be issued prior to the command buffer, and a separate chunk for commands issued after the buffer. The result is a much more obvious code flow in this function, and localisation of the conditional maintanence commands prior to the command buffer. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: clean up GPU command submissionRussell King1-8/+9
Clean up the GPU command submission path to prepare for the next change. This makes the next change easier to read and understand. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: use previous GPU pipe state when pipe switchingRussell King1-6/+7
Use the previous GPU pipe state when deciding which GPU caches should be flushed prior to switching the current pipe. This avoids infering what the previously selected pipe was, and potentially flushing the wrong caches. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: flush all GPU caches when stopping GPURussell King1-5/+36
Flush the GPU caches to ensure that any dirty data is pushed out before stopping the front end. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: track current execution stateRussell King1-0/+1
Add tracking of the current execution state (iow, active GPU pipe). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: extract arming of semaphoreRussell King1-6/+8
Extract out the arming of a semaphore from the pipe select code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: extract replacement of WAIT commandRussell King1-9/+23
Extract out the replacement of the WAIT command with some other command. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-03-07drm: etnaviv: extract command ring reservationRussell King1-8/+14
Provide a helper etnaviv_buffer_reserve() to ensure that we can fit a set of commands into the ring buffer without wrapping by moving code out of etnaviv_buffer_queue(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2015-12-15drm/etnaviv: add initial etnaviv DRM driverThe etnaviv authors1-0/+268
This adds the etnaviv DRM driver and hooks it up in Makefiles and Kconfig. Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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