From: Alison Schofield <alison.schofi...@intel.com>
Add APIs to allocate and send a SET_PARTITION_INFO mailbox command.
Signed-off-by: Alison Schofield <alison.schofi...@intel.com>
---
cxl/lib/private.h | 9 +++++++++
cxl/libcxl.h | 4 ++++
cxl/lib/libcxl.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
cxl/lib/libcxl.sym | 3 +++
4 files changed, 61 insertions(+)
diff --git a/cxl/lib/private.h b/cxl/lib/private.h
index dd9234f..841aa80 100644
--- a/cxl/lib/private.h
+++ b/cxl/lib/private.h
@@ -114,6 +114,15 @@ struct cxl_cmd_get_partition_info {
#define CXL_CAPACITY_MULTIPLIER SZ_256M
+struct cxl_cmd_set_partition_info {
+ le64 volatile_capacity;
+ u8 flags;
+} __attribute__((packed));
+
+/* CXL 2.0 8.2.9.5.2 Set Partition Info */
+#define CXL_CMD_SET_PARTITION_INFO_NO_FLAG (0)
+#define CXL_CMD_SET_PARTITION_INFO_IMMEDIATE_FLAG (1)
+
/* CXL 2.0 8.2.9.5.3 Byte 0 Health Status */
#define CXL_CMD_HEALTH_INFO_STATUS_MAINTENANCE_NEEDED_MASK BIT(0)
#define CXL_CMD_HEALTH_INFO_STATUS_PERFORMANCE_DEGRADED_MASK BIT(1)
diff --git a/cxl/libcxl.h b/cxl/libcxl.h
index d333b6d..67d6ffc 100644
--- a/cxl/libcxl.h
+++ b/cxl/libcxl.h
@@ -50,6 +50,8 @@ int cxl_memdev_read_label(struct cxl_memdev *memdev, void
*buf, size_t length,
size_t offset);
int cxl_memdev_write_label(struct cxl_memdev *memdev, void *buf, size_t length,
size_t offset);
+int cxl_memdev_set_partition_info(struct cxl_memdev *memdev,
+ unsigned long long volatile_capacity, int flags);
#define cxl_memdev_foreach(ctx, memdev) \
for (memdev = cxl_memdev_get_first(ctx); \
@@ -117,6 +119,8 @@ unsigned long long
cxl_cmd_get_partition_info_get_active_volatile_cap(struct cxl
unsigned long long cxl_cmd_get_partition_info_get_active_persistent_cap(struct
cxl_cmd *cmd);
unsigned long long cxl_cmd_get_partition_info_get_next_volatile_cap(struct
cxl_cmd *cmd);
unsigned long long cxl_cmd_get_partition_info_get_next_persistent_cap(struct
cxl_cmd *cmd);
+struct cxl_cmd *cxl_cmd_new_set_partition_info(struct cxl_memdev *memdev,
+ unsigned long long volatile_capacity, int flags);
#ifdef __cplusplus
} /* extern "C" */
diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c
index 85a6c0e..877a783 100644
--- a/cxl/lib/libcxl.c
+++ b/cxl/lib/libcxl.c
@@ -1227,6 +1227,21 @@
cxl_cmd_get_partition_info_get_next_persistent_cap(struct cxl_cmd *cmd)
cmd_partition_get_capacity_field(cmd, next_persistent_cap);
}
+CXL_EXPORT struct cxl_cmd *cxl_cmd_new_set_partition_info(struct cxl_memdev
*memdev,
+ unsigned long long volatile_capacity, int flags)
+{
+ struct cxl_cmd_set_partition_info *set_partition;
+ struct cxl_cmd *cmd;
+
+ cmd = cxl_cmd_new_generic(memdev,
+ CXL_MEM_COMMAND_ID_SET_PARTITION_INFO);
+
+ set_partition = (struct cxl_cmd_set_partition_info
*)cmd->send_cmd->in.payload;
+ set_partition->volatile_capacity = cpu_to_le64(volatile_capacity);
+ set_partition->flags = flags;
+ return cmd;
+}
+
CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd)
{
struct cxl_memdev *memdev = cmd->memdev;
@@ -1425,3 +1440,33 @@ CXL_EXPORT int cxl_memdev_read_label(struct cxl_memdev
*memdev, void *buf,
{
return lsa_op(memdev, LSA_OP_GET, buf, length, offset);
}
+
+CXL_EXPORT int cxl_memdev_set_partition_info(struct cxl_memdev *memdev,
+ unsigned long long volatile_capacity, int flags)
+{
+ struct cxl_ctx *ctx = cxl_memdev_get_ctx(memdev);
+ struct cxl_cmd *cmd;
+ int rc;
+
+ dbg(ctx, "%s: enter cap: %llx, flags %d\n", __func__,
+ volatile_capacity, flags);
+
+ cmd = cxl_cmd_new_set_partition_info(memdev,
+ volatile_capacity / CXL_CAPACITY_MULTIPLIER, flags);
+ if (!cmd)
+ return -ENXIO;
+
+ rc = cxl_cmd_submit(cmd);
+ if (rc < 0) {
+ err(ctx, "cmd submission failed: %s\n", strerror(-rc));
+ goto err;
+ }
+ rc = cxl_cmd_get_mbox_status(cmd);
+ if (rc != 0) {
+ err(ctx, "%s: mbox status: %d\n", __func__, rc);
+ rc = -ENXIO;
+ }
+err:
+ cxl_cmd_unref(cmd);
+ return rc;
+}
diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym
index bed6427..5d02c45 100644
--- a/cxl/lib/libcxl.sym
+++ b/cxl/lib/libcxl.sym
@@ -78,6 +78,9 @@ global:
cxl_cmd_get_partition_info_get_active_persistent_cap;
cxl_cmd_get_partition_info_get_next_volatile_cap;
cxl_cmd_get_partition_info_get_next_persistent_cap;
+ cxl_cmd_new_set_partition_info;
+ cxl_memdev_set_partition_info;
+
local:
*;
};
--
2.31.1
