3 Commits

Author	SHA1	Message	Date
Vipul Pandya	2c97478106	RDMA/cxgb4: Add DB Overflow Avoidance ... Get FULL/EMPTY/DROP events from LLD. On FULL event, disable normal user mode DB rings. Add modify_qp semantics to allow user processes to call into the kernel to ring doobells without overflowing. Add DB Full/Empty/Drop stats. Mark queues when created indicating the doorbell state. If we're in the middle of db overflow avoidance, then newly created queues should start out in this mode. Bump the C4IW_UVERBS_ABI_VERSION to 2 so the user mode library can know if the driver supports the kernel mode db ringing. Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>	2012-05-18 13:22:31 -07:00
Steve Wise	c6d7b26791	RDMA/cxgb4: Support on-chip SQs ... T4 support on-chip SQs to reduce latency. This patch adds support for this in iw_cxgb4: - Manage ocqp memory like other adapter mem resources. - Allocate user mode SQs from ocqp mem if available. - Map ocqp mem to user process using write combining. - Map PCIE_MA_SYNC reg to user process. Bump uverbs ABI. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>	2010-09-28 10:46:35 -07:00
Steve Wise	cfdda9d764	RDMA/cxgb4: Add driver for Chelsio T4 RNIC ... Add an RDMA/iWARP driver for Chelsio T4 Ethernet adapters. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>	2010-04-21 15:30:06 -07:00