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From: Vishal Verma <vishal.l.verma@intel.com>
To: <nvdimm@lists.linux.dev>, <linux-cxl@vger.kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>,
	Ben Widawsky <ben.widawsky@intel.com>,
	Alison Schofield <alison.schofield@intel.com>,
	Ira Weiny <ira.weiny@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>
Subject: [ndctl PATCH v3 10/21] libcxl: add support for the 'GET_LSA' command
Date: Thu,  1 Jul 2021 14:09:54 -0600	[thread overview]
Message-ID: <20210701201005.3065299-11-vishal.l.verma@intel.com> (raw)
In-Reply-To: <20210701201005.3065299-1-vishal.l.verma@intel.com>

Add a command allocator and accessor APIs for the 'GET_LSA' mailbox
command.

Cc: Ben Widawsky <ben.widawsky@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
 cxl/lib/private.h  |  5 +++++
 cxl/lib/libcxl.c   | 31 +++++++++++++++++++++++++++++++
 cxl/libcxl.h       |  3 +++
 cxl/lib/libcxl.sym |  2 ++
 4 files changed, 41 insertions(+)

diff --git a/cxl/lib/private.h b/cxl/lib/private.h
index 2232f4c..fb1dd8e 100644
--- a/cxl/lib/private.h
+++ b/cxl/lib/private.h
@@ -73,6 +73,11 @@ struct cxl_cmd_identify {
 	u8 qos_telemetry_caps;
 } __attribute__((packed));
 
+struct cxl_cmd_get_lsa_in {
+	le32 offset;
+	le32 length;
+} __attribute__((packed));
+
 struct cxl_cmd_get_health_info {
 	u8 health_status;
 	u8 media_status;
diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c
index 2e33c5e..d2c38c9 100644
--- a/cxl/lib/libcxl.c
+++ b/cxl/lib/libcxl.c
@@ -799,6 +799,37 @@ CXL_EXPORT struct cxl_cmd *cxl_cmd_new_raw(struct cxl_memdev *memdev,
 	return cmd;
 }
 
+CXL_EXPORT struct cxl_cmd *cxl_cmd_new_get_lsa(struct cxl_memdev *memdev,
+		unsigned int offset, unsigned int length)
+{
+	struct cxl_cmd_get_lsa_in *get_lsa;
+	struct cxl_cmd *cmd;
+
+	cmd = cxl_cmd_new_generic(memdev, CXL_MEM_COMMAND_ID_GET_LSA);
+	if (!cmd)
+		return NULL;
+
+	get_lsa = (void *)cmd->send_cmd->in.payload;
+	get_lsa->offset = cpu_to_le32(offset);
+	get_lsa->length = cpu_to_le32(length);
+	return cmd;
+}
+
+#define cmd_get_void(cmd, N) \
+do { \
+	void *p = (void *)cmd->send_cmd->out.payload; \
+	if (cmd->send_cmd->id != CXL_MEM_COMMAND_ID_##N) \
+		return NULL; \
+	if (cmd->status < 0) \
+		return NULL; \
+	return p; \
+} while(0);
+
+CXL_EXPORT void *cxl_cmd_get_lsa_get_payload(struct cxl_cmd *cmd)
+{
+	cmd_get_void(cmd, GET_LSA);
+}
+
 CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd)
 {
 	struct cxl_memdev *memdev = cmd->memdev;
diff --git a/cxl/libcxl.h b/cxl/libcxl.h
index 56ae4af..6edbd8d 100644
--- a/cxl/libcxl.h
+++ b/cxl/libcxl.h
@@ -71,6 +71,9 @@ int cxl_cmd_get_health_info_get_temperature(struct cxl_cmd *cmd);
 int cxl_cmd_get_health_info_get_dirty_shutdowns(struct cxl_cmd *cmd);
 int cxl_cmd_get_health_info_get_volatile_errors(struct cxl_cmd *cmd);
 int cxl_cmd_get_health_info_get_pmem_errors(struct cxl_cmd *cmd);
+struct cxl_cmd *cxl_cmd_new_get_lsa(struct cxl_memdev *memdev,
+		unsigned int offset, unsigned int length);
+void *cxl_cmd_get_lsa_get_payload(struct cxl_cmd *cmd);
 
 #ifdef __cplusplus
 } /* extern "C" */
diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym
index e00443d..2c6193b 100644
--- a/cxl/lib/libcxl.sym
+++ b/cxl/lib/libcxl.sym
@@ -52,4 +52,6 @@ global:
 	cxl_cmd_get_health_info_get_dirty_shutdowns;
 	cxl_cmd_get_health_info_get_volatile_errors;
 	cxl_cmd_get_health_info_get_pmem_errors;
+	cxl_cmd_new_get_lsa;
+	cxl_cmd_get_lsa_get_payload;
 } LIBCXL_2;
-- 
2.31.1


  parent reply	other threads:[~2021-07-01 20:10 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-01 20:09 [ndctl PATCH v3 00/21] Initial CXL support Vishal Verma
2021-07-01 20:09 ` [ndctl PATCH v3 01/21] ndctl: add .clang-format Vishal Verma
2021-07-10  1:12   ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 02/21] cxl: add a cxl utility and libcxl library Vishal Verma
2021-07-10  1:12   ` Dan Williams
2021-07-13 21:14     ` Verma, Vishal L
2021-07-01 20:09 ` [ndctl PATCH v3 03/21] cxl: add a local copy of the cxl_mem UAPI header Vishal Verma
2021-07-10  1:13   ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 04/21] libcxl: add support for command query and submission Vishal Verma
2021-07-13  5:12   ` Dan Williams
2021-07-13 21:17     ` Verma, Vishal L
2021-07-13 21:39       ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 05/21] libcxl: add support for the 'Identify Device' command Vishal Verma
2021-07-15 23:50   ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 06/21] test: rename 'ndctl_test' to 'test_ctx' Vishal Verma
2021-07-15 23:51   ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 07/21] test: rename 'ndctl_test_*' helpers to 'test_*' Vishal Verma
2021-07-15 23:51   ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 08/21] test: introduce a libcxl unit test Vishal Verma
2021-07-15 23:53   ` Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 09/21] libcxl: add GET_HEALTH_INFO mailbox command and accessors Vishal Verma
2021-07-16  1:11   ` Dan Williams
2021-07-01 20:09 ` Vishal Verma [this message]
2021-07-16  2:24   ` [ndctl PATCH v3 10/21] libcxl: add support for the 'GET_LSA' command Dan Williams
2021-07-01 20:09 ` [ndctl PATCH v3 11/21] util/hexdump: Add a util helper to print a buffer in hex Vishal Verma
2021-07-01 20:09 ` [ndctl PATCH v3 12/21] test/libcxl: add a test for {set, get}_lsa commands Vishal Verma
2021-07-01 20:09 ` [ndctl PATCH v3 13/21] test/libcxl: introduce a command size fuzzing test Vishal Verma
2021-07-01 20:09 ` [ndctl PATCH v3 14/21] libcxl: add lsa_size to cxl_memdev, and an API to retrieve it Vishal Verma
2021-07-01 20:09 ` [ndctl PATCH v3 15/21] libcxl: PLACEHOLDER: add an interface to determine whether a memdev is active Vishal Verma
2021-07-01 20:10 ` [ndctl PATCH v3 16/21] libcxl: add interfaces for label operations Vishal Verma
2021-07-01 20:10 ` [ndctl PATCH v3 17/21] test/libcxl: add a test for cxl_memdev_{get,set}_lsa Vishal Verma
2021-07-01 20:10 ` [ndctl PATCH v3 18/21] cxl: add commands to read, write, and zero labels Vishal Verma
2021-07-01 20:10 ` [ndctl PATCH v3 19/21] Documentation/cxl: add library API documentation Vishal Verma
2021-07-01 20:10 ` [ndctl PATCH v3 20/21] ndctl: Add CXL packages to the RPM spec Vishal Verma
2021-07-01 20:10 ` [ndctl PATCH v3 21/21] cxl-cli: add bash completion Vishal Verma
2021-07-01 20:13 ` [ndctl PATCH v3 00/21] Initial CXL support Verma, Vishal L

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