[ndctl PATCH 1/2] libcxl: add support for Set Alert Configuration mailbox command

[Jehoon Park <jehoon.park@samsung.com>]

CXL 3.0 Spec 8.2.9.8.3.3 defines Set Alert Configuration mailbox command which
allows a CXL host to configure programmable warning thresholds optionally.

Add methods to issue the command and set fields.

Signed-off-by: Jehoon Park <jehoon.park@samsung.com>
---
 Documentation/cxl/lib/libcxl.txt |  1 +
 cxl/lib/libcxl.c                 | 21 +++++++++++++++++++++
 cxl/lib/libcxl.sym               | 12 ++++++++++++
 cxl/lib/private.h                | 12 ++++++++++++
 cxl/libcxl.h                     | 16 ++++++++++++++++
 5 files changed, 62 insertions(+)

diff --git a/Documentation/cxl/lib/libcxl.txt b/Documentation/cxl/lib/libcxl.txt
index 31bc855..bcb8928 100644
--- a/Documentation/cxl/lib/libcxl.txt
+++ b/Documentation/cxl/lib/libcxl.txt
@@ -122,6 +122,7 @@ struct cxl_cmd *cxl_cmd_new_raw(struct cxl_memdev *memdev, int opcode);
 struct cxl_cmd *cxl_cmd_new_identify(struct cxl_memdev *memdev);
 struct cxl_cmd *cxl_cmd_new_get_health_info(struct cxl_memdev *memdev);
 struct cxl_cmd *cxl_cmd_new_get_alert_config(struct cxl_memdev *memdev);
+struct cxl_cmd *cxl_cmd_new_set_alert_config(struct cxl_memdev *memdev);
 struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev,
 					unsigned int offset, unsigned int length);
 struct cxl_cmd *cxl_cmd_new_write_label(struct cxl_memdev *memdev, void *buf,
diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c
index 769cd8a..a70b064 100644
--- a/cxl/lib/libcxl.c
+++ b/cxl/lib/libcxl.c
@@ -4166,3 +4166,24 @@ CXL_EXPORT int cxl_memdev_read_label(struct cxl_memdev *memdev, void *buf,
 {
 	return lsa_op(memdev, LSA_OP_GET, buf, length, offset);
 }
+
+#define cxl_alert_config_set_field(field)                                     \
+CXL_EXPORT int cxl_cmd_alert_config_set_##field(struct cxl_cmd *cmd, int val) \
+{                                                                             \
+	struct cxl_cmd_set_alert_config *setalert = cmd->input_payload;       \
+	setalert->field = val;                                                \
+	return 0;                                                             \
+}
+
+cxl_alert_config_set_field(life_used_prog_warn_threshold)
+cxl_alert_config_set_field(dev_over_temperature_prog_warn_threshold)
+cxl_alert_config_set_field(dev_under_temperature_prog_warn_threshold)
+cxl_alert_config_set_field(corrected_volatile_mem_err_prog_warn_threshold)
+cxl_alert_config_set_field(corrected_pmem_err_prog_warn_threshold)
+cxl_alert_config_set_field(valid_alert_actions)
+cxl_alert_config_set_field(enable_alert_actions)
+
+CXL_EXPORT struct cxl_cmd *cxl_cmd_new_set_alert_config(struct cxl_memdev *memdev)
+{
+	return cxl_cmd_new_generic(memdev, CXL_MEM_COMMAND_ID_SET_ALERT_CONFIG);
+}
diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym
index c6545c7..334f01f 100644
--- a/cxl/lib/libcxl.sym
+++ b/cxl/lib/libcxl.sym
@@ -250,3 +250,15 @@ global:
 	cxl_region_get_daxctl_region;
 	cxl_port_get_parent_dport;
 } LIBCXL_4;
+
+LIBCXL_6 {
+global:
+	cxl_cmd_alert_config_set_life_used_prog_warn_threshold;
+	cxl_cmd_alert_config_set_dev_over_temperature_prog_warn_threshold;
+	cxl_cmd_alert_config_set_dev_under_temperature_prog_warn_threshold;
+	cxl_cmd_alert_config_set_corrected_volatile_mem_err_prog_warn_threshold;
+	cxl_cmd_alert_config_set_corrected_pmem_err_prog_warn_threshold;
+	cxl_cmd_alert_config_set_valid_alert_actions;
+	cxl_cmd_alert_config_set_enable_alert_actions;
+	cxl_cmd_new_set_alert_config;
+} LIBCXL_5;
diff --git a/cxl/lib/private.h b/cxl/lib/private.h
index d49b560..43bf1d7 100644
--- a/cxl/lib/private.h
+++ b/cxl/lib/private.h
@@ -273,6 +273,18 @@ struct cxl_cmd_get_alert_config {
 #define CXL_CMD_ALERT_CONFIG_PROG_ALERTS_CORRECTED_PMEM_ERR_PROG_WARN_THRESHOLD_MASK \
 	BIT(4)
 
+/* CXL 3.0 8.2.9.8.3.3 Set Alert Configuration */
+struct cxl_cmd_set_alert_config {
+	u8 valid_alert_actions;
+	u8 enable_alert_actions;
+	u8 life_used_prog_warn_threshold;
+	u8 rsvd;
+	le16 dev_over_temperature_prog_warn_threshold;
+	le16 dev_under_temperature_prog_warn_threshold;
+	le16 corrected_volatile_mem_err_prog_warn_threshold;
+	le16 corrected_pmem_err_prog_warn_threshold;
+} __attribute__((packed));
+
 struct cxl_cmd_get_partition {
 	le64 active_volatile;
 	le64 active_persistent;
diff --git a/cxl/libcxl.h b/cxl/libcxl.h
index 0218d73..c981683 100644
--- a/cxl/libcxl.h
+++ b/cxl/libcxl.h
@@ -425,6 +425,22 @@ enum cxl_setpartition_mode {
 int cxl_cmd_partition_set_mode(struct cxl_cmd *cmd,
 		enum cxl_setpartition_mode mode);
 
+int cxl_cmd_alert_config_set_life_used_prog_warn_threshold(struct cxl_cmd *cmd,
+							   int threshold);
+int cxl_cmd_alert_config_set_dev_over_temperature_prog_warn_threshold(
+	struct cxl_cmd *cmd, int threshold);
+int cxl_cmd_alert_config_set_dev_under_temperature_prog_warn_threshold(
+	struct cxl_cmd *cmd, int threshold);
+int cxl_cmd_alert_config_set_corrected_volatile_mem_err_prog_warn_threshold(
+	struct cxl_cmd *cmd, int threshold);
+int cxl_cmd_alert_config_set_corrected_pmem_err_prog_warn_threshold(
+	struct cxl_cmd *cmd, int threshold);
+int cxl_cmd_alert_config_set_valid_alert_actions(struct cxl_cmd *cmd,
+						 int action);
+int cxl_cmd_alert_config_set_enable_alert_actions(struct cxl_cmd *cmd,
+						  int enable);
+struct cxl_cmd *cxl_cmd_new_set_alert_config(struct cxl_memdev *memdev);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
-- 
2.17.1