e1000: Ignore reset command

When a reset is requested, the current e1000 emulation never clears the
reset bit which may cause a driver to hang. This patch masks the reset
bit out when setting the control registert, so the reset is immediately
completed.

Signed-off-by: Kevin Wolf <mail@kevin-wolf.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

diff --git a/hw/e1000.c b/hw/e1000.c
index c5eb5469981c596240bc8958d967329987d1e0e8..26657922c57860f3f63c6b507d7e835dcbb06da1 100644 (file)
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -189,6 +189,13 @@ rxbufsize(uint32_t v)
     return 2048;
 }
 
+static void
+set_ctrl(E1000State *s, int index, uint32_t val)
+{
+    /* RST is self clearing */
+    s->mac_reg[CTRL] = val & ~E1000_CTRL_RST;
+}
+
 static void
 set_rx_control(E1000State *s, int index, uint32_t val)
 {
@@ -783,12 +790,12 @@ enum { NREADOPS = ARRAY_SIZE(macreg_readops) };
 static void (*macreg_writeops[])(E1000State *, int, uint32_t) = {
     putreg(PBA),       putreg(EERD),   putreg(SWSM),   putreg(WUFC),
     putreg(TDBAL),     putreg(TDBAH),  putreg(TXDCTL), putreg(RDBAH),
-    putreg(RDBAL),     putreg(LEDCTL), putreg(CTRL),   putreg(VET),
+    putreg(RDBAL),     putreg(LEDCTL), putreg(VET),
     [TDLEN] = set_dlen,        [RDLEN] = set_dlen,     [TCTL] = set_tctl,
     [TDT] = set_tctl,  [MDIC] = set_mdic,      [ICS] = set_ics,
     [TDH] = set_16bit, [RDH] = set_16bit,      [RDT] = set_rdt,
     [IMC] = set_imc,   [IMS] = set_ims,        [ICR] = set_icr,
-    [EECD] = set_eecd, [RCTL] = set_rx_control,
+    [EECD] = set_eecd, [RCTL] = set_rx_control, [CTRL] = set_ctrl,
     [RA ... RA+31] = &mac_writereg,
     [MTA ... MTA+127] = &mac_writereg,
     [VFTA ... VFTA+127] = &mac_writereg,