linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2010-08-07	RDMA/cxgb4: Obtain RDMA QID ranges from LLD/FW	Steve Wise	1	-2/+0
	Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21	RDMA/cxgb4: Support variable sized work requests	Steve Wise	1	-17/+15
	T4 EQ entries are in multiples of 64 bytes. Currently the RDMA SQ and RQ use fixed sized entries composed of 4 EQ entries for the SQ and 2 EQ entries for the RQ. For optimial latency with small IO, we need to change this so the HW only needs to DMA the EQ entries actually used by a given work request. Implementation: - add wq_pidx counter to track where we are in the EQ. cidx/pidx are used for the sw sq/rq tracking and flow control. - the variable part of work requests is the SGL. Add new functions to build the SGL and/or immediate data directly in the EQ memory wrapping when needed. - adjust the min burst size for the EQ contexts to 64B. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06	RDMA/cxgb4: Use the DMA state API instead of the pci equivalents	FUJITA Tomonori	1	-3/+3
	This replace the PCI DMA state API (include/linux/pci-dma.h) with the DMA equivalents since the PCI DMA state API will be obsolete. No functional change. For further information about the background: http://marc.info/?l=linux-netdev&m=127037540020276&w=2 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24	RDMA/cxgb4: Update some HW limits	Steve Wise	1	-8/+9
	Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24	RDMA/cxgb4: Fix overflow bug in CQ arm	Steve Wise	1	-19/+12
	- wrap cq->cqidx_inc based on cq size. - optimize t4_arm_cq logic. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24	RDMA/cxgb4: Optimize CQ overflow detection	Steve Wise	1	-12/+16
	1) save the timestamp flit in the cq when we consume a CQE. 2) always compare the saved flit with the previous entry flit when reading the next CQE entry. If the flits don't compare, then we have overflowed. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-05	MAINTAINERS: Add cxgb4 and iw_cxgb4 entries	Roland Dreier	1	-9/+23
	Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21	RDMA/cxgb4: Add driver for Chelsio T4 RNIC	Steve Wise	1	-0/+536
	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>