mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.4 KiB
58 lines
1.4 KiB
.. SPDX-License-Identifier: GPL-2.0 |
|
.. include:: <isonum.txt> |
|
|
|
=================================== |
|
Compute Express Link Memory Devices |
|
=================================== |
|
|
|
A Compute Express Link Memory Device is a CXL component that implements the |
|
CXL.mem protocol. It contains some amount of volatile memory, persistent memory, |
|
or both. It is enumerated as a PCI device for configuration and passing |
|
messages over an MMIO mailbox. Its contribution to the System Physical |
|
Address space is handled via HDM (Host Managed Device Memory) decoders |
|
that optionally define a device's contribution to an interleaved address |
|
range across multiple devices underneath a host-bridge or interleaved |
|
across host-bridges. |
|
|
|
Driver Infrastructure |
|
===================== |
|
|
|
This section covers the driver infrastructure for a CXL memory device. |
|
|
|
CXL Memory Device |
|
----------------- |
|
|
|
.. kernel-doc:: drivers/cxl/pci.c |
|
:doc: cxl pci |
|
|
|
.. kernel-doc:: drivers/cxl/pci.c |
|
:internal: |
|
|
|
CXL Core |
|
-------- |
|
.. kernel-doc:: drivers/cxl/cxl.h |
|
:doc: cxl objects |
|
|
|
.. kernel-doc:: drivers/cxl/cxl.h |
|
:internal: |
|
|
|
.. kernel-doc:: drivers/cxl/core/bus.c |
|
:doc: cxl core |
|
|
|
.. kernel-doc:: drivers/cxl/core/pmem.c |
|
:doc: cxl pmem |
|
|
|
.. kernel-doc:: drivers/cxl/core/regs.c |
|
:doc: cxl registers |
|
|
|
External Interfaces |
|
=================== |
|
|
|
CXL IOCTL Interface |
|
------------------- |
|
|
|
.. kernel-doc:: include/uapi/linux/cxl_mem.h |
|
:doc: UAPI |
|
|
|
.. kernel-doc:: include/uapi/linux/cxl_mem.h |
|
:internal:
|
|
|