Add TX_GIE to the TX registers MMIO region.

Before TX_GIE1 was accessed as RAM, with no effect.
Now it is accessed as MMIO, also without any effect.

The memory flat view becomes:

  (qemu) info mtree -f
  FlatView #0
   Root memory region: system
    0000000081000000-00000000810007e3 (prio 0, i/o): xlnx.xps-ethernetlite
    00000000810007e4-00000000810007f3 (prio 0, i/o): ethlite.mdio
    00000000810007f4-00000000810007fb (prio 0, i/o): ethlite.tx[0]io
    00000000810007fc-0000000081000ff3 (prio 0, i/o): xlnx.xps-ethernetlite @00000000000007fc
    0000000081000ff4-0000000081000ffb (prio 0, i/o): ethlite.tx[1]io
    0000000081000ffc-00000000810017fb (prio 0, i/o): xlnx.xps-ethernetlite @0000000000000ffc
    00000000810017fc-00000000810017ff (prio 0, i/o): ethlite.rx[0]io
    0000000081001800-0000000081001ffb (prio 0, i/o): xlnx.xps-ethernetlite @0000000000001800
    0000000081001ffc-0000000081001fff (prio 0, i/o): ethlite.rx[1]io

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
---
 hw/net/xilinx_ethlite.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/hw/net/xilinx_ethlite.c b/hw/net/xilinx_ethlite.c
index b105fb7524..038e81dcae 100644
--- a/hw/net/xilinx_ethlite.c
+++ b/hw/net/xilinx_ethlite.c
@@ -42,7 +42,6 @@
 #define BUFSZ_MAX      0x07e4
 #define A_MDIO_BASE    0x07e4
 #define A_TX_BASE0     0x07f4
-#define R_TX_GIE0     (0x07f8 / 4)
 #define R_TX_CTRL0    (0x07fc / 4)
 #define R_TX_BUF1     (0x0800 / 4)
 #define A_TX_BASE1     0x0ff4
@@ -56,6 +55,7 @@
 
 enum {
     TX_LEN =  0,
+    TX_GIE =  1,
     TX_MAX
 };
 
@@ -142,6 +142,9 @@ static uint64_t port_tx_read(void *opaque, hwaddr addr, unsigned int size)
         case TX_LEN:
             r = s->port[port_index].reg.tx_len;
             break;
+        case TX_GIE:
+            r = s->port[port_index].reg.tx_gie;
+            break;
         default:
             g_assert_not_reached();
     }
@@ -159,6 +162,9 @@ static void port_tx_write(void *opaque, hwaddr addr, uint64_t value,
         case TX_LEN:
             s->port[port_index].reg.tx_len = value;
             break;
+        case TX_GIE:
+            s->port[port_index].reg.tx_gie = value;
+            break;
         default:
             g_assert_not_reached();
     }
@@ -238,10 +244,6 @@ eth_read(void *opaque, hwaddr addr, unsigned int size)
 
     switch (addr)
     {
-        case R_TX_GIE0:
-            r = s->port[port_index].reg.tx_gie;
-            break;
-
         case R_TX_CTRL1:
         case R_TX_CTRL0:
             r = s->port[port_index].reg.tx_ctrl;
@@ -286,11 +288,6 @@ eth_write(void *opaque, hwaddr addr,
             s->port[port_index].reg.tx_ctrl = value & ~(CTRL_P | CTRL_S);
             break;
 
-        /* Keep these native.  */
-        case R_TX_GIE0:
-            s->port[port_index].reg.tx_gie = value;
-            break;
-
         default:
             s->regs[addr] = tswap32(value);
             break;
-- 
2.45.2