@@ -1160,6 +1160,47 @@ CXL_EXPORT ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd,
return length;
}
+CXL_EXPORT struct cxl_cmd *cxl_cmd_new_get_partition_info(struct cxl_memdev *memdev)
+{
+ return cxl_cmd_new_generic(memdev,
+ CXL_MEM_COMMAND_ID_GET_PARTITION_INFO);
+}
+
+#define cmd_partition_get_capacity_field(cmd, field) \
+do { \
+ struct cxl_cmd_get_partition_info *c = \
+ (struct cxl_cmd_get_partition_info *)cmd->send_cmd->out.payload;\
+ int rc = cxl_cmd_validate_status(cmd, \
+ CXL_MEM_COMMAND_ID_GET_PARTITION_INFO); \
+ if (rc) \
+ return ULLONG_MAX; \
+ return le64_to_cpu(c->field) * CXL_CAPACITY_MULTIPLIER; \
+} while (0)
+
+CXL_EXPORT unsigned long long
+cxl_cmd_partition_info_get_active_volatile_bytes(struct cxl_cmd *cmd)
+{
+ cmd_partition_get_capacity_field(cmd, active_volatile_cap);
+}
+
+CXL_EXPORT unsigned long long
+cxl_cmd_partition_info_get_active_persistent_bytes(struct cxl_cmd *cmd)
+{
+ cmd_partition_get_capacity_field(cmd, active_persistent_cap);
+}
+
+CXL_EXPORT unsigned long long
+cxl_cmd_partition_info_get_next_volatile_bytes(struct cxl_cmd *cmd)
+{
+ cmd_partition_get_capacity_field(cmd, next_volatile_cap);
+}
+
+CXL_EXPORT unsigned long long
+cxl_cmd_partition_info_get_next_persistent_bytes(struct cxl_cmd *cmd)
+{
+ cmd_partition_get_capacity_field(cmd, next_persistent_cap);
+}
+
CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd)
{
struct cxl_memdev *memdev = cmd->memdev;
@@ -70,6 +70,11 @@ global:
cxl_memdev_zero_label;
cxl_memdev_write_label;
cxl_memdev_read_label;
+ cxl_cmd_new_get_partition_info;
+ cxl_cmd_partition_info_get_active_volatile_bytes;
+ cxl_cmd_partition_info_get_active_persistent_bytes;
+ cxl_cmd_partition_info_get_next_volatile_bytes;
+ cxl_cmd_partition_info_get_next_persistent_bytes;
local:
*;
};
@@ -7,6 +7,7 @@
#include <cxl/cxl_mem.h>
#include <ccan/endian/endian.h>
#include <ccan/short_types/short_types.h>
+#include <util/size.h>
#define CXL_EXPORT __attribute__ ((visibility("default")))
@@ -104,6 +105,15 @@ struct cxl_cmd_get_health_info {
le32 pmem_errors;
} __attribute__((packed));
+struct cxl_cmd_get_partition_info {
+ le64 active_volatile_cap;
+ le64 active_persistent_cap;
+ le64 next_volatile_cap;
+ le64 next_persistent_cap;
+} __attribute__((packed));
+
+#define CXL_CAPACITY_MULTIPLIER SZ_256M
+
/* 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)
@@ -109,6 +109,11 @@ ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, void *buf,
unsigned int length);
struct cxl_cmd *cxl_cmd_new_write_label(struct cxl_memdev *memdev,
void *buf, unsigned int offset, unsigned int length);
+struct cxl_cmd *cxl_cmd_new_get_partition_info(struct cxl_memdev *memdev);
+unsigned long long cxl_cmd_partition_info_get_active_volatile_bytes(struct cxl_cmd *cmd);
+unsigned long long cxl_cmd_partition_info_get_active_persistent_bytes(struct cxl_cmd *cmd);
+unsigned long long cxl_cmd_partition_info_get_next_volatile_bytes(struct cxl_cmd *cmd);
+unsigned long long cxl_cmd_partition_info_get_next_persistent_bytes(struct cxl_cmd *cmd);
#ifdef __cplusplus
} /* extern "C" */
@@ -15,6 +15,7 @@
#define SZ_4M 0x00400000
#define SZ_16M 0x01000000
#define SZ_64M 0x04000000
+#define SZ_256M 0x10000000
#define SZ_1G 0x40000000
#define SZ_1T 0x10000000000ULL