APIs for the cache level and size

Read the cache level and size from topoogy sysfs file.

Change-Id: Id3c558c95bcb79139a19e4adbaa7ff333d06098f

rocm_smi/include/rocm_smi/rocm_smi.h

@@ -845,6 +845,22 @@ typedef struct {
 /// \cond Ignore in docs.
 typedef rsmi_version_t rsmi_version;
 /// \endcond
+
+/**
+ * @brief This structure represents the cache size and level
+ */
+#define RSMI_MAX_CACHE_TYPES 10
+typedef struct {
+  uint32_t num_cache_types;
+  struct {
+    uint32_t cache_size_kb; /* In KB */
+    uint32_t cache_level;
+  } cache[RSMI_MAX_CACHE_TYPES];
+} rsmi_gpu_cache_info_t;
+/// \cond Ignore in docs.
+typedef rsmi_gpu_cache_info_t rsmi_gpu_cache_info;
+/// \endcond
+
 /**
  * @brief This structure represents a range (e.g., frequencies or voltages).
  */
@@ -2035,6 +2051,22 @@ rsmi_status_t
 rsmi_dev_memory_total_get(uint32_t dv_ind, rsmi_memory_type_t mem_type,
                                                              uint64_t *total);
 
+/**
+ *  @brief Get gpu cache info.
+ * 
+ *  @details Given a device index @p dv_ind, and a pointer to a cache 
+ *  info @p info, this function will write the cache size and level 
+ *  to the location pointed to by @p info.
+ *  @param[in] dv_ind a device index
+ *
+ *  @param[inout] info reference to the cache info struct.
+ *  Must be allocated by user.
+ *
+ *  @return ::rsmi_status_t | ::RSMI_STATUS_SUCCESS on success, non-zero on fail
+ */
+rsmi_status_t rsmi_dev_cache_info_get(
+      uint32_t dv_ind, rsmi_gpu_cache_info_t *info);
+
 /**
  *  @brief Get the current memory usage
  *

rocm_smi/include/rocm_smi/rocm_smi_kfd.h

@@ -84,6 +84,9 @@ class KFDNode {
     int get_total_memory(uint64_t* total);
     int get_used_memory(uint64_t* used);
 
+    // Get cache info from kfd
+    int get_cache_info(rsmi_gpu_cache_info_t *info);
+
  private:
     uint32_t node_indx_;
     uint32_t amdgpu_dev_index_;