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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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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>
190 lines
5.3 KiB
Makefile
190 lines
5.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Linux kernel device drivers.
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#
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# 15 Sep 2000, Christoph Hellwig <hch@infradead.org>
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# Rewritten to use lists instead of if-statements.
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#
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obj-y += irqchip/
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obj-y += bus/
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obj-$(CONFIG_GENERIC_PHY) += phy/
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# GPIO must come after pinctrl as gpios may need to mux pins etc
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obj-$(CONFIG_PINCTRL) += pinctrl/
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obj-$(CONFIG_GPIOLIB) += gpio/
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obj-y += pwm/
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obj-y += pci/
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obj-$(CONFIG_PARISC) += parisc/
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obj-$(CONFIG_RAPIDIO) += rapidio/
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obj-y += video/
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obj-y += idle/
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# IPMI must come before ACPI in order to provide IPMI opregion support
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obj-y += char/ipmi/
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obj-$(CONFIG_ACPI) += acpi/
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obj-$(CONFIG_SFI) += sfi/
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# PnP must come after ACPI since it will eventually need to check if acpi
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# was used and do nothing if so
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obj-$(CONFIG_PNP) += pnp/
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obj-y += amba/
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obj-y += clk/
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# Many drivers will want to use DMA so this has to be made available
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# really early.
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obj-$(CONFIG_DMADEVICES) += dma/
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# SOC specific infrastructure drivers.
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obj-y += soc/
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obj-$(CONFIG_VIRTIO) += virtio/
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obj-$(CONFIG_VDPA) += vdpa/
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obj-$(CONFIG_XEN) += xen/
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# regulators early, since some subsystems rely on them to initialize
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obj-$(CONFIG_REGULATOR) += regulator/
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# reset controllers early, since gpu drivers might rely on them to initialize
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obj-$(CONFIG_RESET_CONTROLLER) += reset/
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# tty/ comes before char/ so that the VT console is the boot-time
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# default.
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obj-y += tty/
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obj-y += char/
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# iommu/ comes before gpu as gpu are using iommu controllers
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obj-y += iommu/
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# gpu/ comes after char for AGP vs DRM startup and after iommu
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obj-y += gpu/
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obj-$(CONFIG_CONNECTOR) += connector/
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# i810fb and intelfb depend on char/agp/
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obj-$(CONFIG_FB_I810) += video/fbdev/i810/
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obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
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obj-$(CONFIG_PARPORT) += parport/
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obj-$(CONFIG_NVM) += lightnvm/
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obj-y += base/ block/ misc/ mfd/ nfc/
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obj-$(CONFIG_LIBNVDIMM) += nvdimm/
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obj-$(CONFIG_DAX) += dax/
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obj-$(CONFIG_CXL_BUS) += cxl/
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obj-$(CONFIG_DMA_SHARED_BUFFER) += dma-buf/
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obj-$(CONFIG_NUBUS) += nubus/
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obj-y += macintosh/
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obj-$(CONFIG_IDE) += ide/
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obj-y += scsi/
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obj-y += nvme/
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obj-$(CONFIG_ATA) += ata/
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obj-$(CONFIG_TARGET_CORE) += target/
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obj-$(CONFIG_MTD) += mtd/
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obj-$(CONFIG_SPI) += spi/
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obj-$(CONFIG_SPMI) += spmi/
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obj-$(CONFIG_HSI) += hsi/
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obj-$(CONFIG_SLIMBUS) += slimbus/
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obj-y += net/
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obj-$(CONFIG_ATM) += atm/
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obj-$(CONFIG_FUSION) += message/
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obj-y += firewire/
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obj-$(CONFIG_UIO) += uio/
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obj-$(CONFIG_VFIO) += vfio/
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obj-y += cdrom/
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obj-y += auxdisplay/
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obj-$(CONFIG_PCCARD) += pcmcia/
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obj-$(CONFIG_DIO) += dio/
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obj-$(CONFIG_SBUS) += sbus/
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obj-$(CONFIG_ZORRO) += zorro/
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obj-$(CONFIG_ATA_OVER_ETH) += block/aoe/
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obj-$(CONFIG_PARIDE) += block/paride/
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obj-$(CONFIG_TC) += tc/
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obj-$(CONFIG_USB_PHY) += usb/
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obj-$(CONFIG_USB) += usb/
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obj-$(CONFIG_USB_SUPPORT) += usb/
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obj-$(CONFIG_PCI) += usb/
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obj-$(CONFIG_USB_GADGET) += usb/
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obj-$(CONFIG_OF) += usb/
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obj-$(CONFIG_SERIO) += input/serio/
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obj-$(CONFIG_GAMEPORT) += input/gameport/
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obj-$(CONFIG_INPUT) += input/
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obj-$(CONFIG_RTC_LIB) += rtc/
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obj-y += i2c/ i3c/ media/
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obj-$(CONFIG_PPS) += pps/
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obj-y += ptp/
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obj-$(CONFIG_W1) += w1/
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obj-y += power/
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obj-$(CONFIG_HWMON) += hwmon/
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obj-$(CONFIG_THERMAL) += thermal/
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obj-$(CONFIG_WATCHDOG) += watchdog/
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obj-$(CONFIG_MD) += md/
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obj-$(CONFIG_BT) += bluetooth/
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obj-$(CONFIG_ACCESSIBILITY) += accessibility/
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obj-$(CONFIG_ISDN) += isdn/
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obj-$(CONFIG_EDAC) += edac/
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obj-$(CONFIG_EISA) += eisa/
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obj-$(CONFIG_PM_OPP) += opp/
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obj-$(CONFIG_CPU_FREQ) += cpufreq/
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obj-$(CONFIG_CPU_IDLE) += cpuidle/
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obj-y += mmc/
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obj-$(CONFIG_MEMSTICK) += memstick/
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obj-$(CONFIG_NEW_LEDS) += leds/
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obj-$(CONFIG_INFINIBAND) += infiniband/
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obj-y += firmware/
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obj-$(CONFIG_CRYPTO) += crypto/
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obj-$(CONFIG_SUPERH) += sh/
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obj-y += clocksource/
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obj-$(CONFIG_DCA) += dca/
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obj-$(CONFIG_HID) += hid/
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obj-$(CONFIG_PPC_PS3) += ps3/
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obj-$(CONFIG_OF) += of/
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obj-$(CONFIG_SSB) += ssb/
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obj-$(CONFIG_BCMA) += bcma/
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obj-$(CONFIG_VHOST_RING) += vhost/
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obj-$(CONFIG_VHOST_IOTLB) += vhost/
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obj-$(CONFIG_VHOST) += vhost/
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obj-$(CONFIG_VLYNQ) += vlynq/
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obj-$(CONFIG_GREYBUS) += greybus/
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obj-$(CONFIG_STAGING) += staging/
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obj-y += platform/
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obj-$(CONFIG_MAILBOX) += mailbox/
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obj-$(CONFIG_HWSPINLOCK) += hwspinlock/
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obj-$(CONFIG_REMOTEPROC) += remoteproc/
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obj-$(CONFIG_RPMSG) += rpmsg/
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obj-$(CONFIG_SOUNDWIRE) += soundwire/
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# Virtualization drivers
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obj-$(CONFIG_VIRT_DRIVERS) += virt/
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obj-$(CONFIG_HYPERV) += hv/
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obj-$(CONFIG_PM_DEVFREQ) += devfreq/
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obj-$(CONFIG_EXTCON) += extcon/
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obj-$(CONFIG_MEMORY) += memory/
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obj-$(CONFIG_IIO) += iio/
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obj-$(CONFIG_VME_BUS) += vme/
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obj-$(CONFIG_IPACK_BUS) += ipack/
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obj-$(CONFIG_NTB) += ntb/
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obj-$(CONFIG_POWERCAP) += powercap/
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obj-$(CONFIG_MCB) += mcb/
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obj-$(CONFIG_PERF_EVENTS) += perf/
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obj-$(CONFIG_RAS) += ras/
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obj-$(CONFIG_USB4) += thunderbolt/
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obj-$(CONFIG_CORESIGHT) += hwtracing/coresight/
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obj-y += hwtracing/intel_th/
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obj-$(CONFIG_STM) += hwtracing/stm/
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obj-$(CONFIG_ANDROID) += android/
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obj-$(CONFIG_NVMEM) += nvmem/
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obj-$(CONFIG_FPGA) += fpga/
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obj-$(CONFIG_FSI) += fsi/
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obj-$(CONFIG_TEE) += tee/
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obj-$(CONFIG_MULTIPLEXER) += mux/
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obj-$(CONFIG_UNISYS_VISORBUS) += visorbus/
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obj-$(CONFIG_SIOX) += siox/
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obj-$(CONFIG_GNSS) += gnss/
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obj-$(CONFIG_INTERCONNECT) += interconnect/
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obj-$(CONFIG_COUNTER) += counter/
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obj-$(CONFIG_MOST) += most/
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