[PATCH 12/14] cxl/mem: Add set of informational commands

Ben Widawsky
2021-01-30T10:19:15Z

In order to solidify support for a reasonable set of commands a set of
relatively safe commands are added and thus nullifying the need to use
raw operations to access them.

Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
---
drivers/cxl/mem.c | 8 ++++++++
include/uapi/linux/cxl_mem.h | 4 ++++
2 files changed, 12 insertions(+)

diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
index 787417c4d5dc..b8ca6dff37b5 100644
--- a/drivers/cxl/mem.c
+++ b/drivers/cxl/mem.c
@@ -42,12 +42,16 @@
enum opcode {
CXL_MBOX_OP_INVALID = 0x0000,
#define 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,
@@ -168,6 +172,10 @@ static struct cxl_mem_command mem_commands[] = {
CXL_CMD(IDENTIFY, NONE, 0, 0x43, MANDATORY),
CXL_CMD(RAW, NONE, ~0, ~0, PSEUDO),
CXL_CMD(GET_SUPPORTED_LOGS, NONE, 0, ~0, MANDATORY),
+ CXL_CMD(GET_FW_INFO, NONE, 0, 0x50, NONE),
+ CXL_CMD(GET_PARTITION_INFO, NONE, 0, 0x20, NONE),
+ CXL_CMD(GET_LSA, NONE, 0x8, ~0, MANDATORY),
+ CXL_CMD(GET_HEALTH_INFO, NONE, 0, 0x12, MANDATORY),
};

/*
diff --git a/include/uapi/linux/cxl_mem.h b/include/uapi/linux/cxl_mem.h
index 64cb9753a077..766c231d6150 100644
--- a/include/uapi/linux/cxl_mem.h
+++ b/include/uapi/linux/cxl_mem.h
@@ -35,6 +35,10 @@ extern "C" {
___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(MAX, "Last command")

#define ___C(a, b) CXL_MEM_COMMAND_ID_##a
--
2.30.0