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From: Vishal Verma <vishal.l.verma@intel.com>
To: <linux-cxl@vger.kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>,
Ben Widawsky <ben.widawsky@intel.com>,
<nvdimm@lists.linux.dev>, Vishal Verma <vishal.l.verma@intel.com>
Subject: [ndctl PATCH v4 00/17] Initial CXL support
Date: Thu, 7 Oct 2021 02:21:22 -0600
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| Series |
Initial CXL support
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expand
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Changes since v3[1]: - Collect review tags - Add the kernel's struct_size() helper for trailing array struct calculations (Dan) - Drop test/libcxl - to be re-added after switching to an in-kernel emulation/unit test regime 'cxl_test', similar to 'nfit_test' (Dan) - Rename some verb_X_verb instances to drop the double verb (Dan) - Rename '{get,set}_lsa' to '{read,write}_labels' in libcxl APIs (Dan) - Add accessor APIs for health flags instead of leaking binary representations to library users (Dan) - Rename '{get,set,zero}_lsa' APIs to '{read,write,zero}_label' (Dan) - Add health info to cxl-list - Fix a bug where a newly minted cmd struct didn't have a non-zero status (This allowed a flow like cxl_cmd_new_<foo> followed by cxl_cmd_<foo>_get_<field>() to silently succeed, where the second accessor call should've failed because cxl_cmd_submit was omitted. - Change the cxl_cmd_read_label_get_payload() API to refrain from simply returning a void pointer, that is easy to access out of bounds. Instead, expect a buf/len pair that libcxl then copies the payload into (Dan) [1]: https://lore.kernel.org/linux-cxl/a86b057ccdd8e0a087d300dfc7dc315a3bf32e95.camel@intel.com/ --- These patches add a new utility and library to support CXL devices. This comprehends the kernel's sysfs layout for CXL devices, and implements a command submission harness for CXL mailbox commands via ioctl()s defined by the cxl_mem driver. These patches include: - libcxl representation of cxl_mem devices - A command submission harness through libcxl - A 'cxl-list' command which displays information about a device - cxl-{read,write,zero}-labels commands for Label Storage Area manipulation An ndctl branch with these patches is also available at [2] [2]: https://github.com/pmem/ndctl/tree/cxl-2.0v4 Ira Weiny (1): ndctl: Add CXL packages to the RPM spec Vishal Verma (16): ndctl: add .clang-format cxl: add a cxl utility and libcxl library cxl: add a local copy of the cxl_mem UAPI header util: add the struct_size() helper from the kernel libcxl: add support for command query and submission libcxl: add support for the 'Identify Device' command libcxl: add GET_HEALTH_INFO mailbox command and accessors libcxl: add support for the 'GET_LSA' command util/hexdump: Add a util helper to print a buffer in hex libcxl: add label_size to cxl_memdev, and an API to retrieve it libcxl: add a stub interface to determine whether a memdev is active libcxl: add interfaces for label operations cxl: add commands to read, write, and zero labels Documentation/cxl: add library API documentation cxl-cli: add bash completion cxl: add health information to cxl-list Documentation/cxl/cxl-list.txt | 68 ++ Documentation/cxl/cxl-read-labels.txt | 33 + Documentation/cxl/cxl-write-labels.txt | 32 + Documentation/cxl/cxl-zero-labels.txt | 29 + Documentation/cxl/cxl.txt | 34 + Documentation/cxl/human-option.txt | 8 + Documentation/cxl/labels-description.txt | 8 + Documentation/cxl/labels-options.txt | 17 + Documentation/cxl/lib/cxl_new.txt | 43 + Documentation/cxl/lib/libcxl.txt | 56 + Documentation/cxl/memdev-option.txt | 4 + Documentation/cxl/verbose-option.txt | 5 + configure.ac | 4 + Makefile.am | 14 +- Makefile.am.in | 5 + cxl/lib/private.h | 140 +++ cxl/lib/libcxl.c | 1265 ++++++++++++++++++++++ cxl/builtin.h | 13 + cxl/cxl_mem.h | 189 ++++ cxl/libcxl.h | 116 ++ util/bitmap.h | 23 + util/filter.h | 2 + util/hexdump.h | 8 + util/json.h | 4 + util/main.h | 3 + util/size.h | 62 ++ util/util.h | 6 + cxl/cxl.c | 99 ++ cxl/list.c | 118 ++ cxl/memdev.c | 314 ++++++ util/filter.c | 20 + util/hexdump.c | 53 + util/json.c | 215 ++++ .clang-format | 162 +++ .gitignore | 7 +- Documentation/cxl/Makefile.am | 61 ++ Documentation/cxl/lib/Makefile.am | 58 + contrib/ndctl | 109 ++ cxl/Makefile.am | 22 + cxl/lib/Makefile.am | 32 + cxl/lib/libcxl.pc.in | 11 + cxl/lib/libcxl.sym | 87 ++ ndctl.spec.in | 49 + 43 files changed, 3604 insertions(+), 4 deletions(-) create mode 100644 Documentation/cxl/cxl-list.txt create mode 100644 Documentation/cxl/cxl-read-labels.txt create mode 100644 Documentation/cxl/cxl-write-labels.txt create mode 100644 Documentation/cxl/cxl-zero-labels.txt create mode 100644 Documentation/cxl/cxl.txt create mode 100644 Documentation/cxl/human-option.txt create mode 100644 Documentation/cxl/labels-description.txt create mode 100644 Documentation/cxl/labels-options.txt create mode 100644 Documentation/cxl/lib/cxl_new.txt create mode 100644 Documentation/cxl/lib/libcxl.txt create mode 100644 Documentation/cxl/memdev-option.txt create mode 100644 Documentation/cxl/verbose-option.txt create mode 100644 cxl/lib/private.h create mode 100644 cxl/lib/libcxl.c create mode 100644 cxl/builtin.h create mode 100644 cxl/cxl_mem.h create mode 100644 cxl/libcxl.h create mode 100644 util/hexdump.h create mode 100644 cxl/cxl.c create mode 100644 cxl/list.c create mode 100644 cxl/memdev.c create mode 100644 util/hexdump.c create mode 100644 .clang-format create mode 100644 Documentation/cxl/Makefile.am create mode 100644 Documentation/cxl/lib/Makefile.am create mode 100644 cxl/Makefile.am create mode 100644 cxl/lib/Makefile.am create mode 100644 cxl/lib/libcxl.pc.in create mode 100644 cxl/lib/libcxl.sym base-commit: 4e646fa490ba4b782afa188dd8818b94c419924e