libhsakmt: add API to support svm and xnack

Add function definitions to support SVM (shared virtual memory)
and xnack set.

Change-Id: Ia97ad9d0c449d8d500d799f702e1a58e87d65a56
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>


[ROCm/ROCR-Runtime commit: c44a4be776]

projects/rocr-runtime/include/hsakmt.h

@@ -1254,6 +1254,37 @@ hsaKmtSPMSetDestBuffer(
 	bool        *isSPMDataLoss		//OUT
     );
 
+/* Helper functions for calling KFD SVM ioctl */
+HSAKMT_STATUS
+HSAKMTAPI
+hsaKmtSVMSetAttr(
+    void *start_addr,   // IN: Start of the virtual address range (page-aligned)
+    HSAuint64 size,     // IN: size (page-aligned)
+    unsigned int nattr, // IN: number of attributes
+    HSA_SVM_ATTRIBUTE *attrs  // IN: array of attributes
+);
+
+HSAKMT_STATUS
+HSAKMTAPI
+hsaKmtSVMGetAttr(
+    void *start_addr,   // IN: Start of the virtual address range (page-aligned)
+    HSAuint64 size,     // IN: size (page aligned)
+    unsigned int nattr, // IN: number of attributes
+    HSA_SVM_ATTRIBUTE *attrs  // IN/OUT: array of attributes
+);
+
+HSAKMT_STATUS
+HSAKMTAPI
+hsaKmtSetXNACKMode(
+    HSAint32 enable  // IN: enable/disable XNACK node.
+);
+
+HSAKMT_STATUS
+HSAKMTAPI
+hsaKmtGetXNACKMode(
+    HSAint32 * enable  // OUT: returns XNACK value.
+);
+
 #ifdef __cplusplus
 }   //extern "C"
 #endif

projects/rocr-runtime/include/hsakmttypes.h

@@ -1298,6 +1298,36 @@ typedef struct _HsaMemoryRange {
 	HSAuint64          SizeInBytes;      // Size of above memory
 } HsaMemoryRange;
 
+typedef enum _HSA_SVM_FLAGS {
+	HSA_SVM_FLAG_HOST_ACCESS = 0x00000001, // Guarantee host access to memory
+	HSA_SVM_FLAG_COHERENT    = 0x00000002, // Fine grained coherency between all devices with access
+	HSA_SVM_FLAG_HIVE_LOCAL  = 0x00000004, // Use any GPU in same hive as preferred device
+	HSA_SVM_FLAG_GPU_RO      = 0x00000008, // GPUs only read, allows replication
+	HSA_SVM_FLAG_GPU_EXEC    = 0x00000010, // Allow execution on GPU
+	HSA_SVM_FLAG_GPU_READ_MOSTLY = 0x00000020, // GPUs mostly read, may allow similar optimizations as RO, but writes fault
+} HSA_SVM_FLAGS;
+
+typedef enum _HSA_SVM_ATTR_TYPE {
+	HSA_SVM_ATTR_PREFERRED_LOC,  // gpuid of the preferred location, 0 for
+                                     // system memory, INVALID_NODEID for
+                                     // "don't care"
+	HSA_SVM_ATTR_PREFETCH_LOC,   // gpuid of the prefetch location, 0 for
+                                     // system memory. Setting this triggers an
+                                     // immediate prefetch (migration)
+	HSA_SVM_ATTR_ACCESS,
+	HSA_SVM_ATTR_ACCESS_IN_PLACE,
+	HSA_SVM_ATTR_NO_ACCESS,      // specify memory access for the gpuid given
+                                     // by the attribute value
+	HSA_SVM_ATTR_SET_FLAGS,      // bitmask of flags to set (see HSA_SVM_FLAGS)
+	HSA_SVM_ATTR_CLR_FLAGS,      // bitmask of flags to clear
+	HSA_SVM_ATTR_GRANULARITY     // migration granularity (log2 num pages)
+} HSA_SVM_ATTR_TYPE;
+
+typedef struct _HSA_SVM_ATTRIBUTE {
+	HSAuint32 type;  // attribute type (see enum HSA_SVM_ATTR_TYPE)
+	HSAuint32 value; // attribute value
+} HSA_SVM_ATTRIBUTE;
+
 #pragma pack(pop, hsakmttypes_h)