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Dan Williams 4812be97c0 cxl/acpi: Introduce the root of a cxl_port topology 
While CXL builds upon the PCI software model for enumeration and
endpoint control, a static platform component is required to bootstrap
the CXL memory layout. Similar to how ACPI identifies root-level PCI
memory resources, ACPI data enumerates the address space and interleave
configuration for CXL Memory.

In addition to identifying host bridges, ACPI is responsible for
enumerating the CXL memory space that can be addressed by downstream
decoders. This is similar to the requirement for ACPI to publish
resources via the _CRS method for PCI host bridges. Specifically, ACPI
publishes a table, CXL Early Discovery Table (CEDT), which includes a
list of CXL Memory resources, CXL Fixed Memory Window Structures
(CFMWS).

For now, introduce the core infrastructure for a cxl_port hierarchy
starting with a root level anchor represented by the ACPI0017 device.

Follow on changes model support for the configurable decode capabilities
of cxl_port instances, i.e. CXL switch support.

Co-developed-by: Alison Schofield <alison.schofield@intel.com>
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/162325449515.2293126.15303270193010154608.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2021-06-09 18:02:38 -07:00
..
80211 docs: net: 80211: reduce docs build time 2020-10-08 10:41:49 +02:00
acpi Replace HTTP links with HTTPS ones: documentation 2020-06-08 09:30:19 -06:00
backlight docs: lp855x-driver.rst: add it to the driver-api book 2019-07-15 11:03:02 -03:00
cxl cxl/acpi: Introduce the root of a cxl_port topology 2021-06-09 18:02:38 -07:00
dmaengine dmaengine: doc: client: Update for dmaengine_get_dma_device() usage 2020-12-11 21:20:08 +05:30
driver-model It's been a relatively busy cycle in docsland, though more than usually 2021-04-26 13:22:43 -07:00
early-userspace Replace HTTP links with HTTPS ones: Documentation/driver-api 2020-06-26 11:09:04 -06:00
firmware docs: driver-api: firmware: fallback-mechanisms: Fix rendering of bullet point 2020-09-08 13:32:06 +02:00
fpga docs: fpga: replace :c:member: macros 2020-10-15 07:49:43 +02:00
gpio gpio updates for v5.13 2021-05-05 12:39:29 -07:00
i3c docs: driver-api: i3c: Replace HTTP links with HTTPS ones 2020-07-13 09:32:36 -06:00
iio docs: iio: mark "repeat" sysfs attribute as optional 2021-03-11 20:47:08 +00:00
md docs: add SPDX tags to new index files 2019-07-15 11:03:03 -03:00
media media: v4l: fwnode: Rename v4l2_async_register_subdev_sensor_common 2021-04-06 14:36:54 +02:00
mei docs updates for v5.10-rc1 2020-10-16 15:02:21 -07:00
memory-devices Replace HTTP links with HTTPS ones: Documentation/driver-api 2020-06-26 11:09:04 -06:00
mmc Replace HTTP links with HTTPS ones: Documentation/driver-api 2020-06-26 11:09:04 -06:00
mtd MTD core: 2020-12-16 14:58:35 -08:00
nfc docs: add SPDX tags to new index files 2019-07-15 11:03:03 -03:00
nvdimm MAINTAINERS: Move nvdimm mailing list 2021-05-12 12:37:15 -07:00
pci Documentation: Kill all references to mmiowb() 2019-04-08 12:00:45 +01:00
phy docs: phy: Drop duplicate 'be made' 2019-07-26 08:15:26 -06:00
pldmfw Add pldmfw library for PLDM firmware update 2020-07-28 17:07:06 -07:00
pm docs: devices.rst: fix a C reference markup 2020-10-15 07:49:44 +02:00
rapidio Replace HTTP links with HTTPS ones: Documentation/driver-api 2020-06-26 11:09:04 -06:00
serial Remove link to nonexistent rocket driver docs 2021-05-11 11:02:39 -06:00
soundwire docs: soundwire: fix some identation at stream.rst 2020-09-10 10:49:29 -06:00
surface_aggregator docs: driver-api: Add Surface DTX driver documentation 2021-03-17 18:39:39 +01:00
thermal Documentation: driver-api: thermal: Remove thermal_notify_framework from documentation 2021-04-22 13:15:19 +02:00
usb usb: Restore the usb_header label 2021-05-21 14:41:37 +02:00
xilinx firmware: xilinx: Remove zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE) 2021-03-01 12:52:07 +01:00
auxiliary_bus.rst devlink: Extend devlink port documentation for subfunctions 2021-01-22 11:32:11 -08:00
basics.rst docs: basics.rst: avoid duplicated C function declaration 2020-10-15 07:49:45 +02:00
clk.rst docs: clk: fix struct syntax 2019-06-07 11:35:15 -06:00
component.rst drm/doc: document recommended component helper usage 2019-02-19 12:22:24 +01:00
connector.rst net/connector: Add const qualifier to cb_id 2020-12-16 11:06:49 -08:00
console.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
dcdbas.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
devfreq.rst docs: Add initial documentation for devfreq 2019-11-19 13:16:53 -07:00
device-io.rst docs: driver-api: device-io: Document ioremap() variants & access funcs 2021-04-08 20:18:38 +09:00
device_link.rst docs: device_link.rst: remove duplicated kernel-doc include 2020-10-15 07:49:42 +02:00
dma-buf.rst dma-fence: Document recoverable page fault implications 2021-03-12 15:10:03 +01:00
edac.rst edac.rst: move concepts dictionary from edac.h 2016-12-15 08:58:12 -02:00
eisa.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
firewire.rst FireWire: add driver-api Introduction section 2018-09-06 09:41:16 -06:00
frame-buffer.rst docs: split up the driver book 2016-08-22 14:42:08 -06:00
generic-counter.rst Documentation/driver-api: generic-counter: drop doubled word 2020-07-07 20:24:07 +01:00
hsi.rst docs: split up serial-interfaces.rst 2016-09-06 09:14:52 -06:00
i2c.rst Merge branch 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2017-07-12 10:04:56 -07:00
index.rst Documentation: rename pinctl to pin-control 2021-03-10 14:41:58 +01:00
infiniband.rst RDMA/core: Remove FMR pool API 2020-06-02 20:32:53 -03:00
infrastructure.rst docs: infrastructure.rst: exclude device_link_state from device.h 2020-10-15 07:49:46 +02:00
input.rst Input: remove input_polled_dev implementation 2020-12-02 12:35:14 -08:00
interconnect.rst interconnect: Add interconnect_graph file to debugfs 2019-12-16 09:49:54 +02:00
io-mapping.rst io-mapping: Provide iomap_local variant 2020-11-24 14:42:09 +01:00
io_ordering.rst Documentation: Add io_ordering.rst to driver-api manual 2020-03-10 11:33:19 -06:00
ioctl.rst docs: move core-api/ioctl.rst to driver-api/ 2020-03-10 11:21:08 -06:00
ipmb.rst drivers: ipmi: Support raw i2c packet in IPMB 2019-12-11 13:21:36 -06:00
ipmi.rst Minor cleanups to the IPMI driver for 5.9 2020-08-08 09:32:18 -07:00
isa.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
isapnp.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
libata.rst docs: libata.rst: fix a wrong usage of :c:type: tag 2020-10-15 07:49:44 +02:00
lightnvm-pblk.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
mailbox.rst docs: move mailbox.txt to driver-api and rename it 2020-06-26 11:33:38 -06:00
men-chameleon-bus.rst Documentation: document dma device use for mcb 2021-01-11 13:26:13 -07:00
message-based.rst docs: Don't format internal MPT docs 2016-09-06 09:15:48 -06:00
misc_devices.rst docs-rst: core_api: move driver-specific stuff to drivers_api 2017-04-02 14:17:43 -06:00
miscellaneous.rst docs: driver-api: Remove trailing blank line 2017-08-07 14:27:45 -06:00
mtdnand.rst docs: mtd: Avoid htmldocs warnings 2020-12-10 22:37:32 +01:00
ntb.rst Documentation/driver-api: ntb: drop doubled word 2020-07-13 11:18:17 -06:00
nvmem.rst nvmem: core: add nvmem_device_find 2019-10-07 09:47:37 -07:00
parport-lowlevel.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
pin-control.rst docs: pin-control: Fix error path for control state example 2021-04-08 16:02:43 +02:00
pps.rst docs: driver-api: add remaining converted dirs to it 2019-07-15 11:03:03 -03:00
ptp.rst docs: ptp.rst: add support for Renesas (IDT) ClockMatrix 2020-07-17 10:25:21 -07:00
pwm.rst pwm: Reword docs about pwm_apply_state() 2021-04-26 08:49:48 +02:00
regulator.rst docs: get rid of :c:type explicit declarations for structs 2020-10-15 07:49:40 +02:00
reset.rst docs: add a reset controller chapter to the driver API docs 2020-12-08 10:48:04 -07:00
rfkill.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
s390-drivers.rst docs: s390: convert docs to ReST and rename to *.rst 2019-06-11 09:48:14 +02:00
scsi.rst scsi: target: add driver-api document 2018-04-20 19:14:40 -04:00
slimbus.rst slimbus: stream: add stream support 2018-07-07 17:25:23 +02:00
sm501.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
spi.rst docs: split up serial-interfaces.rst 2016-09-06 09:14:52 -06:00
switchtec.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
sync_file.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
target.rst docs: scsi: target.rst: remove iSCSI transport class kernel-doc markup 2020-10-15 07:49:42 +02:00
uio-howto.rst Documentation/driver-api: uio-howto: drop doubled word 2020-07-10 14:58:01 +02:00
vfio-mediated-device.rst vfio/mdev: Simplify driver registration 2021-04-07 15:39:16 -06:00
vfio.rst docs: vfio: fix typo 2021-05-05 10:20:33 -06:00
vme.rst docs: Update VME documentation to include kerneldoc comments 2017-03-17 15:10:49 +09:00
w1.rst docs: driver-api: address duplicate label warning 2020-04-07 13:41:34 -06:00
xillybus.rst Documentation/driver-api: xillybus: drop doubled word 2020-07-10 14:58:01 +02:00
zorro.rst docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00