net: cadence_gem: Announce availability of priority queues

Announce the availability of the various priority queues.
This fixes an issue where guest kernels would miss to
configure secondary queues due to inproper feature bits.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20181017213932.19973-2-edgar.iglesias@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/net/cadence_gem.c

@@ -1283,6 +1283,7 @@ static void gem_reset(DeviceState *d)
     int i;
     CadenceGEMState *s = CADENCE_GEM(d);
     const uint8_t *a;
+    uint32_t queues_mask = 0;
 
     DB_PRINT("\n");
 
@@ -1299,7 +1300,12 @@ static void gem_reset(DeviceState *d)
     s->regs[GEM_DESCONF] = 0x02500111;
     s->regs[GEM_DESCONF2] = 0x2ab13fff;
     s->regs[GEM_DESCONF5] = 0x002f2045;
-    s->regs[GEM_DESCONF6] = 0x00000200;
+    s->regs[GEM_DESCONF6] = 0x0;
+
+    if (s->num_priority_queues > 1) {
+        queues_mask = MAKE_64BIT_MASK(1, s->num_priority_queues - 1);
+        s->regs[GEM_DESCONF6] |= queues_mask;
+    }
 
     /* Set MAC address */
     a = &s->conf.macaddr.a[0];