From 4ab928f69208d240d3681336f34589e4b151824f Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Mon, 14 Jul 2008 23:48:53 -0700 Subject: RDMA/cxgb3: Fixes for zero STag Handling the zero STag in receive work request requires some extra logic in the driver: - Only set the QP_PRIV bit for kernel mode QPs. - Add a zero STag build function for recv wrs. The uP needs a PBL allocated and passed down in the recv WR so it can construct a HW PBL for the zero STag S/G entries. Note: we need to place a few restrictions on zero STag usage because of this: 1) all SGEs in a recv WR must either be zero STag or not. No mixing. 2) an individual SGE length cannot exceed 128MB for a zero-stag SGE. This should be OK since it's not really practical to allocate such a large chunk of pinned contiguous DMA mapped memory. - Add an optimized non-zero-STag recv wr format for kernel users. This is needed to optimize both zero and non-zero STag cracking in the recv path for kernel users. - Remove the iwch_ prefix from the static build functions. - Bump required FW version. Signed-off-by: Steve Wise --- drivers/infiniband/hw/cxgb3/cxio_wr.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers/infiniband/hw/cxgb3/cxio_wr.h') diff --git a/drivers/infiniband/hw/cxgb3/cxio_wr.h b/drivers/infiniband/hw/cxgb3/cxio_wr.h index de760e9f1cc..04618f7bfbb 100644 --- a/drivers/infiniband/hw/cxgb3/cxio_wr.h +++ b/drivers/infiniband/hw/cxgb3/cxio_wr.h @@ -39,6 +39,9 @@ #define T3_MAX_SGE 4 #define T3_MAX_INLINE 64 +#define T3_STAG0_PBL_SIZE (2 * T3_MAX_SGE << 3) +#define T3_STAG0_MAX_PBE_LEN (128 * 1024 * 1024) +#define T3_STAG0_PAGE_SHIFT 15 #define Q_EMPTY(rptr,wptr) ((rptr)==(wptr)) #define Q_FULL(rptr,wptr,size_log2) ( (((wptr)-(rptr))>>(size_log2)) && \ @@ -665,6 +668,11 @@ struct t3_swsq { int signaled; }; +struct t3_swrq { + __u64 wr_id; + __u32 pbl_addr; +}; + /* * A T3 WQ implements both the SQ and RQ. */ @@ -681,14 +689,15 @@ struct t3_wq { u32 sq_wptr; /* sq_wptr - sq_rptr == count of */ u32 sq_rptr; /* pending wrs */ u32 sq_size_log2; /* sq size */ - u64 *rq; /* SW RQ (holds consumer wr_ids */ + struct t3_swrq *rq; /* SW RQ (holds consumer wr_ids */ u32 rq_wptr; /* rq_wptr - rq_rptr == count of */ u32 rq_rptr; /* pending wrs */ - u64 *rq_oldest_wr; /* oldest wr on the SW RQ */ + struct t3_swrq *rq_oldest_wr; /* oldest wr on the SW RQ */ u32 rq_size_log2; /* rq size */ u32 rq_addr; /* rq adapter address */ void __iomem *doorbell; /* kernel db */ u64 udb; /* user db if any */ + struct cxio_rdev *rdev; }; struct t3_cq { -- cgit v1.2.3