linux-kernel - [PATCH v5 7/9] cxl/mem: Add set of informational commands

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Date:   Tue, 16 Feb 2021 20:09:56 -0800
From:   Ben Widawsky <ben.widawsky@...el.com>
To:     linux-cxl@...r.kernel.org
Cc:     Ben Widawsky <ben.widawsky@...el.com>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-nvdimm@...ts.01.org,
        linux-pci@...r.kernel.org, Bjorn Helgaas <helgaas@...nel.org>,
        Chris Browy <cbrowy@...ry-design.com>,
        Christoph Hellwig <hch@...radead.org>,
        Dan Williams <dan.j.williams@...el.com>,
        David Hildenbrand <david@...hat.com>,
        David Rientjes <rientjes@...gle.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Jon Masters <jcm@...masters.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Rafael Wysocki <rafael.j.wysocki@...el.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Vishal Verma <vishal.l.verma@...el.com>,
        "John Groves (jgroves)" <jgroves@...ron.com>,
        "Kelley, Sean V" <sean.v.kelley@...el.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v5 7/9] cxl/mem: Add set of informational commands

Add initial set of formal commands beyond basic identify and command
enumeration.

Signed-off-by: Ben Widawsky <ben.widawsky@...el.com>
Reviewed-by: Dan Williams <dan.j.williams@...el.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com> (v2)
---
 drivers/cxl/mem.c            | 9 +++++++++
 include/uapi/linux/cxl_mem.h | 5 +++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
index e31b3045e231..6d7d3870b5da 100644
--- a/drivers/cxl/mem.c
+++ b/drivers/cxl/mem.c
@@ -45,12 +45,16 @@
 enum opcode {
 	CXL_MBOX_OP_INVALID		= 0x0000,
 	CXL_MBOX_OP_RAW			= CXL_MBOX_OP_INVALID,
+	CXL_MBOX_OP_GET_FW_INFO		= 0x0200,
 	CXL_MBOX_OP_ACTIVATE_FW		= 0x0202,
 	CXL_MBOX_OP_GET_SUPPORTED_LOGS	= 0x0400,
 	CXL_MBOX_OP_GET_LOG		= 0x0401,
 	CXL_MBOX_OP_IDENTIFY		= 0x4000,
+	CXL_MBOX_OP_GET_PARTITION_INFO	= 0x4100,
 	CXL_MBOX_OP_SET_PARTITION_INFO	= 0x4101,
+	CXL_MBOX_OP_GET_LSA		= 0x4102,
 	CXL_MBOX_OP_SET_LSA		= 0x4103,
+	CXL_MBOX_OP_GET_HEALTH_INFO	= 0x4200,
 	CXL_MBOX_OP_SET_SHUTDOWN_STATE	= 0x4204,
 	CXL_MBOX_OP_SCAN_MEDIA		= 0x4304,
 	CXL_MBOX_OP_GET_SCAN_MEDIA	= 0x4305,
@@ -171,6 +175,11 @@ static struct cxl_mem_command mem_commands[] = {
 	CXL_CMD(RAW, ~0, ~0, 0),
 #endif
 	CXL_CMD(GET_SUPPORTED_LOGS, 0, ~0, CXL_CMD_FLAG_FORCE_ENABLE),
+	CXL_CMD(GET_FW_INFO, 0, 0x50, 0),
+	CXL_CMD(GET_PARTITION_INFO, 0, 0x20, 0),
+	CXL_CMD(GET_LSA, 0x8, ~0, 0),
+	CXL_CMD(GET_HEALTH_INFO, 0, 0x12, 0),
+	CXL_CMD(GET_LOG, 0x18, ~0, CXL_CMD_FLAG_FORCE_ENABLE),
 };
 
 /*
diff --git a/include/uapi/linux/cxl_mem.h b/include/uapi/linux/cxl_mem.h
index 59227f82a4c1..3155382dfc9b 100644
--- a/include/uapi/linux/cxl_mem.h
+++ b/include/uapi/linux/cxl_mem.h
@@ -24,6 +24,11 @@
 	___C(IDENTIFY, "Identify Command"),                               \
 	___C(RAW, "Raw device command"),                                  \
 	___C(GET_SUPPORTED_LOGS, "Get Supported Logs"),                   \
+	___C(GET_FW_INFO, "Get FW Info"),                                 \
+	___C(GET_PARTITION_INFO, "Get Partition Information"),            \
+	___C(GET_LSA, "Get Label Storage Area"),                          \
+	___C(GET_HEALTH_INFO, "Get Health Info"),                         \
+	___C(GET_LOG, "Get Log"),                                         \
 	___C(MAX, "invalid / last command")
 
 #define ___C(a, b) CXL_MEM_COMMAND_ID_##a
-- 
2.30.1