[rtems-libbsd commit] ffec: Avoid AXI bus issues due to a MAC reset
Sebastian Huber
sebh at rtems.org
Wed Sep 27 09:12:46 UTC 2017
Module: rtems-libbsd
Branch: master
Commit: e2e4bf4999648ed6c5e8c4ec59fbef0f0ca2a07d
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=e2e4bf4999648ed6c5e8c4ec59fbef0f0ca2a07d
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Wed Sep 27 09:42:10 2017 +0200
ffec: Avoid AXI bus issues due to a MAC reset
---
freebsd/sys/dev/ffec/if_ffec.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/freebsd/sys/dev/ffec/if_ffec.c b/freebsd/sys/dev/ffec/if_ffec.c
index 85a720f..81440d5 100644
--- a/freebsd/sys/dev/ffec/if_ffec.c
+++ b/freebsd/sys/dev/ffec/if_ffec.c
@@ -1656,7 +1656,14 @@ ffec_attach(device_t dev)
ffec_get_hwaddr(sc, eaddr);
/* Reset the hardware. Disables all interrupts. */
- WR4(sc, FEC_ECR_REG, FEC_ECR_RESET);
+ if (sc->fectype & FECFLAG_AVB)
+ /*
+ * Avoid AXI bus issues due to a MAC reset, see Linux for more
+ * details.
+ */
+ WR4(sc, FEC_ECR_REG, 0);
+ else
+ WR4(sc, FEC_ECR_REG, FEC_ECR_RESET);
/* Setup interrupt handler. */
error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET | INTR_MPSAFE,
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