diff options
| author | Michael Brown <mcb30@ipxe.org> | 2012-07-10 10:52:56 +0100 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2012-07-10 11:21:22 +0100 |
| commit | 9f0b2d25a8e889899711b81213e91d042c58002f (patch) | |
| tree | e4e97becaeccf60bd34b14896a590f0ef4330469 /src/drivers/net/intel.h | |
| parent | 8391ff3ee00583071def824231539004cc07fecb (diff) | |
| download | ipxe-9f0b2d25a8e889899711b81213e91d042c58002f.tar.gz | |
[intel] Explicitly enable descriptor queues
On i350 the datasheet contradicts itself in stating that the default
value of RXDCTL.ENABLE for queue zero is both set (according to the
"Receive Initialization" section) and unset (according to the "Receive
Descriptor Control - RXDCTL" section). Empirical evidence suggests
that the default value is unset.
Explicitly enable both transmit and receive queues to avoid any
ambiguity.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers/net/intel.h')
| -rw-r--r-- | src/drivers/net/intel.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/drivers/net/intel.h b/src/drivers/net/intel.h index 6f941d17..b38a7139 100644 --- a/src/drivers/net/intel.h +++ b/src/drivers/net/intel.h @@ -170,6 +170,10 @@ enum intel_descriptor_status { /** Receive/Transmit Descriptor Tail (offset) */ #define INTEL_xDT 0x18 +/** Receive/Transmit Descriptor Control (offset) */ +#define INTEL_xDCTL 0x28 +#define INTEL_xDCTL_ENABLE 0x02000000UL /**< Queue enable */ + /** Receive Descriptor Head */ #define INTEL_RDH ( INTEL_RD + INTEL_xDH ) |