Commit Graph

9 Commits

Author SHA1 Message Date
Josef Söntgen
b6cfb5a8fe gpu_session: add PPGTT address query function
Using the 'query_buffer_ppgtt()' function allows for retrieving the
virtual address of the buffer in the PPGTT.

This is for components that manage the GPU virtual addresses rather than
the client as is the case with the lima driver.

Issue #4559.
2022-08-10 13:33:00 +02:00
Sebastian Sumpf
a900594978 gpu_session: add import/export of buffers
Add 'export_buffer'/'import_buffer' calls in order to support buffer
sharing between GPU sessions.

Reduce CAP costs for Gpu::Connection from 256 to 32.

issue #4380
2022-02-15 10:10:01 +01:00
Josef Söntgen
cacb83b163 gpu: introduce mapping attributes
The various mapping methods are modelled after the requirements of
the Intel GPUs or rather the Mesa driver back end.

With upcoming support for other driver back ends, we need to
sequeeze their requirements in as well. For now hijack 'map_buffer'
to provide for specifying the kind of attributes the client needs.

For now all buffers mapped in the GGTT for Intel GPUs are treated
as RW.

Issue #4265.
2021-10-13 14:46:52 +02:00
Josef Söntgen
90e151e2c4 gpu: add 'complete' RPC call
This call allows for checking if the given execution buffer has been
completed and complements the completion signal. Initially the GPU
multiplexer always sent such a signal when the currently scheduled
execution buffer has been completed. During enablement of the 'iris'
driver it became necessary to properly check of sequence number.

In case of the Intel GPU multiplexer the sequence numbers are
continous, which prompted the greater-than-or-equal check in the
DRM back end. By hidding this implementation detail behind the
interface, GPU drivers are free to deal with sequence numbers any
way they like and allows for polling in the client, where the
completion signal is now more of a progress signal.

Issue #4265.
2021-10-13 14:46:52 +02:00
Josef Söntgen
e37792ce94 gpu: introduce information dataspace
The current info implementation (as RPC) is limited in a few ways:

  * The amount of data that may be transferred is constrained by the
    underlying base platform
  * Most information never changes during run time but is copied
    nonetheless
  * The information differs depending on the used GPU device and
    in its current implementation only contains Intel GPU specific
    details

With this commit the 'info' RPC call is replaced with the
'info_dataspace' call that transfers the capability for the dataspace
containing the information only. This is complemented by a client
local 'attached_info' call that allows for getting typed access to
the information. The layout of the information is moved to its own
and GPU-specific header file, e.g., 'gpu/info_intel.h'

Issue #4265.
2021-10-13 14:46:52 +02:00
Josef Söntgen
cfb170c719 gpu: move exec sequence number to Gpu namespace
Moving the type definition removes the aritifial linkage to the Gpu
information structure.

Issue #4265.
2021-10-13 14:46:52 +02:00
Josef Söntgen
3b40790e02 gpu: use Buffer_id to identify buffers
Rather than using the dataspace capability directly, let the client
choose its own local identifier that is linked to the underlying
capability.

Fixes #4265.
2021-10-13 14:46:52 +02:00
Alexander Boettcher
b3147050cc gpu/intel: add support to report finished batches
- extend gpu multiplexer to report last completed execution buffer
- on client side lookup finished buffers and disable busy state

issue #4233
2021-08-18 15:06:11 +02:00
Josef Söntgen
198019edca os: add Gpu driver for Intel Gen8 HD graphics
This commit introduces a experimental 3D driver for Intel Gen8 HD
graphics devices as well as the corresponding Gpu session.

Fixes #2507.
2017-08-30 09:59:57 +02:00