The jazzsonic driver in Linux uses the Silicon Revision register value
to probe the chip. The driver fails unless the SR register contains 4.
Unfortunately, reading this register in QEMU usually returns 0 because
the s->regs[] array gets wiped after a software reset.
Fixes: bd8f1ebce4 ("net/dp8393x: fix hardware reset")
Suggested-by: Philippe Mathieu-Daudé <phi...@redhat.com>
Signed-off-by: Finn Thain <fth...@telegraphics.com.au>
---
Changed since v3:
- Simplified as per suggestion from Philippe Mathieu-Daudé.
---
hw/net/dp8393x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
index 1b73a8703b..93eb07e6c8 100644
--- a/hw/net/dp8393x.c
+++ b/hw/net/dp8393x.c
@@ -919,6 +919,7 @@ static void dp8393x_reset(DeviceState *dev)
timer_del(s->watchdog);
memset(s->regs, 0, sizeof(s->regs));
+ s->regs[SONIC_SR] = 0x0004; /* only revision recognized by Linux/mips */
s->regs[SONIC_CR] = SONIC_CR_RST | SONIC_CR_STP | SONIC_CR_RXDIS;
s->regs[SONIC_DCR] &= ~(SONIC_DCR_EXBUS | SONIC_DCR_LBR);
s->regs[SONIC_RCR] &= ~(SONIC_RCR_LB0 | SONIC_RCR_LB1 | SONIC_RCR_BRD |
SONIC_RCR_RNT);
@@ -971,7 +972,6 @@ static void dp8393x_realize(DeviceState *dev, Error **errp)
qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
s->watchdog = timer_new_ns(QEMU_CLOCK_VIRTUAL, dp8393x_watchdog, s);
- s->regs[SONIC_SR] = 0x0004; /* only revision recognized by Linux */
memory_region_init_ram(&s->prom, OBJECT(dev),
"dp8393x-prom", SONIC_PROM_SIZE, &local_err);
--
2.24.1
