mirror of
https://github.com/tbsdtv/linux_media.git
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825d150875
Pull initial support for CXL (Compute Express Link) from Dan Williams: "Introduce an initial driver for CXL 2.0 Type-3 Memory Devices. CXL is Compute Express Link which released the 2.0 specification in November. The Linux relevant changes in CXL 2.0 are support for an OS to dynamically assign address space to memory devices, support for switches, persistent memory, and hotplug. A Type-3 Memory Device is a PCI enumerated device presenting the CXL Memory Device Class Code and implementing the CXL.mem protocol. CXL.mem allows device to advertise CPU and I/O coherent memory to the system, i.e. typical "System RAM" and "Persistent Memory" in Linux /proc/iomem terms. In addition to the CXL.mem fast path there is an administrative command hardware mailbox interface for maintenance and provisioning. It is this command interface that is the focus of the initial driver. With this driver a CXL device that is mapped by the BIOS can be administered by Linux. Linux support for CXL PMEM and dynamic CXL address space management are to be implemented post v5.12" Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>4cdadfd5e0("cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints")13237183c7("cxl/mem: Add a "RAW" send command")472b1ce6e9("cxl/mem: Enable commands via CEL")57ee605b97("cxl/mem: Add set of informational commands") Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>8adaf747c9("cxl/mem: Find device capabilities")b39cb1052a("cxl/mem: Register CXL memX devices") * tag 'cxl-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: cxl/mem: Fix potential memory leak cxl/mem: Return -EFAULT if copy_to_user() fails MAINTAINERS: Add maintainers of the CXL driver cxl/mem: Add set of informational commands cxl/mem: Enable commands via CEL cxl/mem: Add a "RAW" send command cxl/mem: Add basic IOCTL interface cxl/mem: Register CXL memX devices cxl/mem: Find device capabilities cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints
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========================================
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The Linux driver implementer's API guide
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========================================
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The kernel offers a wide variety of interfaces to support the development
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of device drivers. This document is an only somewhat organized collection
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of some of those interfaces — it will hopefully get better over time! The
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available subsections can be seen below.
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.. class:: toc-title
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Table of contents
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.. toctree::
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:maxdepth: 2
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driver-model/index
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basics
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infrastructure
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ioctl
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early-userspace/index
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pm/index
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clk
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device-io
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dma-buf
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device_link
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component
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message-based
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infiniband
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frame-buffer
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regulator
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reset
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iio/index
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input
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usb/index
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firewire
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pci/index
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cxl/index
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spi
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i2c
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ipmb
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ipmi
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i3c/index
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interconnect
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devfreq
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hsi
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edac
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scsi
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libata
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target
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mailbox
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mtdnand
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miscellaneous
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mei/index
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mtd/index
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mmc/index
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nvdimm/index
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w1
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rapidio/index
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s390-drivers
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vme
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80211/index
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uio-howto
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firmware/index
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pinctl
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gpio/index
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md/index
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media/index
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misc_devices
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nfc/index
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dmaengine/index
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slimbus
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soundwire/index
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thermal/index
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fpga/index
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acpi/index
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auxiliary_bus
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backlight/lp855x-driver.rst
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connector
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console
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dcdbas
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eisa
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isa
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isapnp
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io-mapping
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io_ordering
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generic-counter
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lightnvm-pblk
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memory-devices/index
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men-chameleon-bus
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ntb
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nvmem
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parport-lowlevel
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pps
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ptp
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phy/index
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pti_intel_mid
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pwm
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pldmfw/index
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rfkill
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serial/index
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sm501
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surface_aggregator/index
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switchtec
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sync_file
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vfio-mediated-device
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vfio
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xilinx/index
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xillybus
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zorro
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.. only:: subproject and html
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Indices
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=======
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* :ref:`genindex`
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