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e1000e: Fix EIAC register implementation

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This patch fixes 2 issues:

1. Bits set in EIAC register should be cleared
   from IMS when EIAM is not used.
2. Only bit that corresonds to the interrupt being
   raised should be cleared.

See spec. 10.2.4.7 Interrupt Auto Clear

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Dmitry Fleytman 2016-09-15 09:14:30 +03:00 committed by Jason Wang
parent 4100c026b6
commit b38636b837
1 changed files with 9 additions and 5 deletions
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14
hw/net/e1000e_core.c
View file

@ -2015,13 +2015,17 @@ e1000e_msix_notify_one(E1000ECore *core, uint32_t cause, uint32_t int_cfg)
trace_e1000e_irq_icr_clear_eiac(core->mac[ICR], core->mac[EIAC]);
if (core->mac[EIAC] & E1000_ICR_OTHER) {
effective_eiac = (core->mac[EIAC] & E1000_EIAC_MASK) |
E1000_ICR_OTHER_CAUSES;
} else {
effective_eiac = core->mac[EIAC] & E1000_EIAC_MASK;
effective_eiac = core->mac[EIAC] & cause;
if (effective_eiac == E1000_ICR_OTHER) {
effective_eiac |= E1000_ICR_OTHER_CAUSES;
}
core->mac[ICR] &= ~effective_eiac;
if (!(core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) {
core->mac[IMS] &= ~effective_eiac;
}
}
static void