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Add documentation on how to calculate the access coordinates for a given
CXL region in detail.
Reviewed-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://patch.msgid.link/20250515000923.2590820-4-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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pmem.c regs.c mbox.c identifiers were missing. Add them to
memory-devices.rst following their respective DOC comment includes.
Two acpi.c identifiers were available, but not used in kernel-doc's:
1) Add add_cxl_resources to memory-devices.rst and fix up the Sphinx
complaint on the ascii art by escaping it.
2) Add cxl_acpi_evaluate_qtg_dsm to access-coordinates.rst.
core/features.c is new. Add a "DOC: cxl features" comment to the
source and identifiers to memory_devices.rst.
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/20250513215813.1419645-1-alison.schofield@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Add some crosslinks between pages in the CXL docs - mostly to the
ACPI tables.
Suggested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Gregory Price <gourry@gourry.net>
Link: https://patch.msgid.link/20250512162134.3596150-18-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Add documentation on how the CXL driver surfaces memory through the
DAX driver and memory-hotplug.
Signed-off-by: Gregory Price <gourry@gourry.net>
Link: https://patch.msgid.link/20250512162134.3596150-13-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Add documentation on how the CXL driver interacts with the DAX driver.
Signed-off-by: Gregory Price <gourry@gourry.net>
Link: https://patch.msgid.link/20250512162134.3596150-12-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Add 4 example configurations:
- single device
- cross-host-bridge interleave
- intra-host-bridge-interleave
- multi-level interleave
Signed-off-by: Gregory Price <gourry@gourry.net>
Link: https://patch.msgid.link/20250512162134.3596150-11-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Add docs for the CXL driver that explains the base devices,
decoder types, region types, mailbox interfaces, and decoder
programming.
Signed-off-by: Gregory Price <gourry@gourry.net>
Link: https://patch.msgid.link/20250512162134.3596150-10-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Document __init time configurations that affect CXL driver probe
process and memory region configuration.
Signed-off-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20250512162134.3596150-9-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Add type-3 device configuration overview that explains the probe
process for a type-3 device from early-boot through memory-hotplug.
Signed-off-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20250512162134.3596150-8-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Place the hierarchy diagram in access-coordinates.rst in a code block.
Fix a few grammar issues.
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20250512162134.3596150-3-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Restructure the cxl folder to make adding docs per-page cleaner.
Signed-off-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20250512162134.3596150-2-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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