s390x/sclp: propagate hmfai

hmfai is provided on CPU models >= z196. Let's propagate it properly.
Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <20160905085244.99980-19-dahi@linux.vnet.ibm.com>
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>

hw/s390x/sclp.c

@@ -111,6 +111,7 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
         read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
     }
     read_info->mha_pow = s390_get_mha_pow();
+    read_info->hmfai = cpu_to_be32(s390_get_hmfai());
 
     rnsize = 1 << (sclp->increment_size - 20);
     if (rnsize <= 128) {

include/hw/s390x/sclp.h

@@ -131,7 +131,8 @@ typedef struct ReadInfo {
     uint8_t  _reserved6[116 - 112];     /* 112-115 */
     uint8_t  conf_char_ext[120 - 116];   /* 116-119 */
     uint16_t highest_cpu;
-    uint8_t  _reserved5[128 - 122];     /* 122-127 */
+    uint8_t  _reserved5[124 - 122];     /* 122-123 */
+    uint32_t hmfai;
     struct CPUEntry entries[0];
 } QEMU_PACKED ReadInfo;
 

target-s390x/cpu_models.c

@@ -74,6 +74,20 @@ static S390CPUDef s390_cpu_defs[] = {
     CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
 };
 
+uint32_t s390_get_hmfai(void)
+{
+    static S390CPU *cpu;
+
+    if (!cpu) {
+        cpu = S390_CPU(qemu_get_cpu(0));
+    }
+
+    if (!cpu || !cpu->model) {
+        return 0;
+    }
+    return cpu->model->def->hmfai;
+}
+
 uint8_t s390_get_mha_pow(void)
 {
     static S390CPU *cpu;

target-s390x/cpu_models.h

@@ -51,6 +51,7 @@ typedef struct S390CPUModel {
 
 #define S390_GEN_Z10 0xa
 
+uint32_t s390_get_hmfai(void);
 uint8_t s390_get_mha_pow(void);
 uint32_t s390_get_ibc_val(void);
 static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel *model)