dcec3c8c9a
We don't need to keep it as a single large file anymore; split it up so that it is easier to manage and the individual sections can be read directly as plain files. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
170 lines
3.3 KiB
ReStructuredText
170 lines
3.3 KiB
ReStructuredText
Device drivers infrastructure
|
|
=============================
|
|
|
|
The Basic Device Driver-Model Structures
|
|
----------------------------------------
|
|
|
|
.. kernel-doc:: include/linux/device.h
|
|
:internal:
|
|
|
|
Device Drivers Base
|
|
-------------------
|
|
|
|
.. kernel-doc:: drivers/base/init.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/base/driver.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/core.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/syscore.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/class.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/node.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/base/firmware_class.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/transport_class.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/dd.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/platform_device.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/base/platform.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/bus.c
|
|
:export:
|
|
|
|
Buffer Sharing and Synchronization
|
|
----------------------------------
|
|
|
|
The dma-buf subsystem provides the framework for sharing buffers for
|
|
hardware (DMA) access across multiple device drivers and subsystems, and
|
|
for synchronizing asynchronous hardware access.
|
|
|
|
This is used, for example, by drm "prime" multi-GPU support, but is of
|
|
course not limited to GPU use cases.
|
|
|
|
The three main components of this are: (1) dma-buf, representing a
|
|
sg_table and exposed to userspace as a file descriptor to allow passing
|
|
between devices, (2) fence, which provides a mechanism to signal when
|
|
one device as finished access, and (3) reservation, which manages the
|
|
shared or exclusive fence(s) associated with the buffer.
|
|
|
|
dma-buf
|
|
~~~~~~~
|
|
|
|
.. kernel-doc:: drivers/dma-buf/dma-buf.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/dma-buf.h
|
|
:internal:
|
|
|
|
reservation
|
|
~~~~~~~~~~~
|
|
|
|
.. kernel-doc:: drivers/dma-buf/reservation.c
|
|
:doc: Reservation Object Overview
|
|
|
|
.. kernel-doc:: drivers/dma-buf/reservation.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/reservation.h
|
|
:internal:
|
|
|
|
fence
|
|
~~~~~
|
|
|
|
.. kernel-doc:: drivers/dma-buf/fence.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/fence.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/dma-buf/seqno-fence.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/seqno-fence.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/dma-buf/fence-array.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/fence-array.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/dma-buf/reservation.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/reservation.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/dma-buf/sync_file.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/sync_file.h
|
|
:internal:
|
|
|
|
Device Drivers DMA Management
|
|
-----------------------------
|
|
|
|
.. kernel-doc:: drivers/base/dma-coherent.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/base/dma-mapping.c
|
|
:export:
|
|
|
|
Device Drivers Power Management
|
|
-------------------------------
|
|
|
|
.. kernel-doc:: drivers/base/power/main.c
|
|
:export:
|
|
|
|
Device Drivers ACPI Support
|
|
---------------------------
|
|
|
|
.. kernel-doc:: drivers/acpi/scan.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/acpi/scan.c
|
|
:internal:
|
|
|
|
Device drivers PnP support
|
|
--------------------------
|
|
|
|
.. kernel-doc:: drivers/pnp/core.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/pnp/card.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/pnp/driver.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/pnp/manager.c
|
|
:export:
|
|
|
|
.. kernel-doc:: drivers/pnp/support.c
|
|
:export:
|
|
|
|
Userspace IO devices
|
|
--------------------
|
|
|
|
.. kernel-doc:: drivers/uio/uio.c
|
|
:export:
|
|
|
|
.. kernel-doc:: include/linux/uio_driver.h
|
|
:internal:
|
|
|