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4cdadfd5e0
The CXL.mem protocol allows a device to act as a provider of "System RAM" and/or "Persistent Memory" that is fully coherent as if the memory was attached to the typical CPU memory controller. With the CXL-2.0 specification a PCI endpoint can implement a "Type-3" device interface and give the operating system control over "Host Managed Device Memory". See section 2.3 Type 3 CXL Device. The memory range exported by the device may optionally be described by the platform firmware memory map, or by infrastructure like LIBNVDIMM to provision persistent memory capacity from one, or more, CXL.mem devices. A pre-requisite for Linux-managed memory-capacity provisioning is this cxl_mem driver that can speak the mailbox protocol defined in section 8.2.8.4 Mailbox Registers. For now just land the initial driver boiler-plate and Documentation/ infrastructure. Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: David Rientjes <rientjes@google.com> (v1) Cc: Jonathan Corbet <corbet@lwn.net> Link: https://www.computeexpresslink.org/download-the-specification Link: https://lore.kernel.org/r/20210217040958.1354670-2-ben.widawsky@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
240 lines
3.8 KiB
Plaintext
240 lines
3.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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menu "Device Drivers"
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# Keep I/O buses first
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source "drivers/amba/Kconfig"
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source "drivers/eisa/Kconfig"
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source "drivers/pci/Kconfig"
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source "drivers/cxl/Kconfig"
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source "drivers/pcmcia/Kconfig"
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source "drivers/rapidio/Kconfig"
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source "drivers/base/Kconfig"
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source "drivers/bus/Kconfig"
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source "drivers/connector/Kconfig"
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source "drivers/gnss/Kconfig"
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source "drivers/mtd/Kconfig"
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source "drivers/of/Kconfig"
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source "drivers/parport/Kconfig"
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source "drivers/pnp/Kconfig"
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source "drivers/block/Kconfig"
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source "drivers/nvme/Kconfig"
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source "drivers/misc/Kconfig"
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source "drivers/ide/Kconfig"
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source "drivers/scsi/Kconfig"
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source "drivers/ata/Kconfig"
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source "drivers/md/Kconfig"
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source "drivers/target/Kconfig"
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source "drivers/message/fusion/Kconfig"
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source "drivers/firewire/Kconfig"
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source "drivers/macintosh/Kconfig"
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source "drivers/net/Kconfig"
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source "drivers/isdn/Kconfig"
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source "drivers/lightnvm/Kconfig"
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# input before char - char/joystick depends on it. As does USB.
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source "drivers/input/Kconfig"
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source "drivers/char/Kconfig"
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source "drivers/i2c/Kconfig"
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source "drivers/i3c/Kconfig"
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source "drivers/spi/Kconfig"
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source "drivers/spmi/Kconfig"
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source "drivers/hsi/Kconfig"
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source "drivers/pps/Kconfig"
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source "drivers/ptp/Kconfig"
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source "drivers/pinctrl/Kconfig"
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source "drivers/gpio/Kconfig"
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source "drivers/w1/Kconfig"
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source "drivers/power/Kconfig"
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source "drivers/hwmon/Kconfig"
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source "drivers/thermal/Kconfig"
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source "drivers/watchdog/Kconfig"
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source "drivers/ssb/Kconfig"
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source "drivers/bcma/Kconfig"
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source "drivers/mfd/Kconfig"
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source "drivers/regulator/Kconfig"
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source "drivers/media/Kconfig"
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source "drivers/video/Kconfig"
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source "sound/Kconfig"
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source "drivers/hid/Kconfig"
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source "drivers/usb/Kconfig"
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source "drivers/mmc/Kconfig"
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source "drivers/memstick/Kconfig"
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source "drivers/leds/Kconfig"
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source "drivers/accessibility/Kconfig"
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source "drivers/infiniband/Kconfig"
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source "drivers/edac/Kconfig"
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source "drivers/rtc/Kconfig"
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source "drivers/dma/Kconfig"
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source "drivers/dma-buf/Kconfig"
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source "drivers/dca/Kconfig"
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source "drivers/auxdisplay/Kconfig"
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source "drivers/uio/Kconfig"
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source "drivers/vfio/Kconfig"
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source "drivers/vlynq/Kconfig"
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source "drivers/virt/Kconfig"
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source "drivers/virtio/Kconfig"
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source "drivers/vdpa/Kconfig"
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source "drivers/vhost/Kconfig"
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source "drivers/hv/Kconfig"
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source "drivers/xen/Kconfig"
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source "drivers/greybus/Kconfig"
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source "drivers/staging/Kconfig"
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source "drivers/platform/Kconfig"
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source "drivers/clk/Kconfig"
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source "drivers/hwspinlock/Kconfig"
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source "drivers/clocksource/Kconfig"
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source "drivers/mailbox/Kconfig"
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source "drivers/iommu/Kconfig"
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source "drivers/remoteproc/Kconfig"
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source "drivers/rpmsg/Kconfig"
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source "drivers/soundwire/Kconfig"
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source "drivers/soc/Kconfig"
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source "drivers/devfreq/Kconfig"
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source "drivers/extcon/Kconfig"
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source "drivers/memory/Kconfig"
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source "drivers/iio/Kconfig"
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source "drivers/ntb/Kconfig"
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source "drivers/vme/Kconfig"
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source "drivers/pwm/Kconfig"
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source "drivers/irqchip/Kconfig"
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source "drivers/ipack/Kconfig"
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source "drivers/reset/Kconfig"
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source "drivers/phy/Kconfig"
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source "drivers/powercap/Kconfig"
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source "drivers/mcb/Kconfig"
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source "drivers/perf/Kconfig"
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source "drivers/ras/Kconfig"
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source "drivers/thunderbolt/Kconfig"
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source "drivers/android/Kconfig"
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source "drivers/gpu/trace/Kconfig"
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source "drivers/nvdimm/Kconfig"
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source "drivers/dax/Kconfig"
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source "drivers/nvmem/Kconfig"
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source "drivers/hwtracing/Kconfig"
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source "drivers/fpga/Kconfig"
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source "drivers/fsi/Kconfig"
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source "drivers/tee/Kconfig"
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source "drivers/mux/Kconfig"
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source "drivers/opp/Kconfig"
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source "drivers/visorbus/Kconfig"
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source "drivers/siox/Kconfig"
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source "drivers/slimbus/Kconfig"
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source "drivers/interconnect/Kconfig"
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source "drivers/counter/Kconfig"
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source "drivers/most/Kconfig"
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endmenu
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