diff options
| author | Michael Brown <mcb30@ipxe.org> | 2015-04-21 16:43:30 +0100 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2015-04-21 16:52:33 +0100 |
| commit | 8958f62a1c85ff6b449a685a729b61b9ea69f50a (patch) | |
| tree | 93c2af638cb0dbe5d2f33a1d7b4f0e14be9b6785 /src/drivers/net/intel.c | |
| parent | 63dcab002e11123328bdbb73a475e5bc43b26b17 (diff) | |
| download | ipxe-8958f62a1c85ff6b449a685a729b61b9ea69f50a.tar.gz | |
[intel] Force RX polling on VMware emulated 82545em
The emulated Intel 82545em in some versions of VMware (observed with
ESXi v5.1) seems to sometimes fail to set the RXT0 bit in the
interrupt cause register (ICR), causing iPXE to stop receiving
packets. Work around this problem (for the 82545em only) by always
polling the receive queue regardless of the state of the ICR.
Reported-by: Slava Bendersky <volga629@networklab.ca>
Tested-by: Slava Bendersky <volga629@networklab.ca>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers/net/intel.c')
| -rw-r--r-- | src/drivers/net/intel.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/drivers/net/intel.c b/src/drivers/net/intel.c index 954025d06..671aad733 100644 --- a/src/drivers/net/intel.c +++ b/src/drivers/net/intel.c @@ -572,6 +572,13 @@ static int intel_open ( struct net_device *netdev ) { /* Update link state */ intel_check_link ( netdev ); + /* Apply required errata */ + if ( intel->flags & INTEL_VMWARE ) { + DBGC ( intel, "INTEL %p applying VMware errata workaround\n", + intel ); + intel->force_icr = INTEL_IRQ_RXT0; + } + return 0; intel_destroy_ring ( intel, &intel->rx ); @@ -740,6 +747,7 @@ static void intel_poll ( struct net_device *netdev ) { icr = readl ( intel->regs + INTEL_ICR ); profile_stop ( &intel_vm_poll_profiler ); profile_exclude ( &intel_vm_poll_profiler ); + icr |= intel->force_icr; if ( ! icr ) return; @@ -907,7 +915,7 @@ static struct pci_device_id intel_nics[] = { PCI_ROM ( 0x8086, 0x100c, "82544gc", "82544GC (Copper)", 0 ), PCI_ROM ( 0x8086, 0x100d, "82544gc-l", "82544GC (LOM)", 0 ), PCI_ROM ( 0x8086, 0x100e, "82540em", "82540EM", 0 ), - PCI_ROM ( 0x8086, 0x100f, "82545em", "82545EM (Copper)", 0 ), + PCI_ROM ( 0x8086, 0x100f, "82545em", "82545EM (Copper)", INTEL_VMWARE ), PCI_ROM ( 0x8086, 0x1010, "82546eb", "82546EB (Copper)", 0 ), PCI_ROM ( 0x8086, 0x1011, "82545em-f", "82545EM (Fiber)", 0 ), PCI_ROM ( 0x8086, 0x1012, "82546eb-f", "82546EB (Fiber)", 0 ), |