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[PATCH] IB/mthca: Set RDMA/atomic capabilities correctly 

mthca apparently had the meanings of the max_rd_atomic and max_dest_rd_atomic
QP attributes backwards.  max_rd_atomic limits the maximum number of
outstanding RDMA/atomic requests as an initiator (on a send queue), and
max_dest_rd_atomic specifies the resources allocated to handle RMDA/atomic
requests from the remote end of the connection.  We were programming our QP
context with these values swapped.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roland Dreier 2005-06-27 14:36:41 -07:00 committed by Linus Torvalds
parent cd123d7fcf
commit 34a4a753d1
1 changed files with 8 additions and 8 deletions
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16
drivers/infiniband/hw/mthca/mthca_qp.c
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@ -724,9 +724,9 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RETRY_COUNT); qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RETRY_COUNT);
} }
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
qp_context->params1 |= cpu_to_be32(min(attr->max_dest_rd_atomic ? qp_context->params1 |= cpu_to_be32(min(attr->max_rd_atomic ?
ffs(attr->max_dest_rd_atomic) - 1 : 0, ffs(attr->max_rd_atomic) - 1 : 0,
7) << 21); 7) << 21);
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_SRA_MAX); qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_SRA_MAX);
} }
@ -764,10 +764,10 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
qp->atomic_rd_en = attr->qp_access_flags; qp->atomic_rd_en = attr->qp_access_flags;
} }
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
u8 rra_max; u8 rra_max;
if (qp->resp_depth && !attr->max_rd_atomic) { if (qp->resp_depth && !attr->max_dest_rd_atomic) {
/* /*
* Lowering our responder resources to zero. * Lowering our responder resources to zero.
* Turn off RDMA/atomics as responder. * Turn off RDMA/atomics as responder.
@ -778,7 +778,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
MTHCA_QP_OPTPAR_RAE); MTHCA_QP_OPTPAR_RAE);
} }
if (!qp->resp_depth && attr->max_rd_atomic) { if (!qp->resp_depth && attr->max_dest_rd_atomic) {
/* /*
* Increasing our responder resources from * Increasing our responder resources from
* zero. Turn on RDMA/atomics as appropriate. * zero. Turn on RDMA/atomics as appropriate.
@ -799,7 +799,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
} }
for (rra_max = 0; for (rra_max = 0;
1 << rra_max < attr->max_rd_atomic && 1 << rra_max < attr->max_dest_rd_atomic &&
rra_max < dev->qp_table.rdb_shift; rra_max < dev->qp_table.rdb_shift;
++rra_max) ++rra_max)
; /* nothing */ ; /* nothing */
@ -807,7 +807,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
qp_context->params2 |= cpu_to_be32(rra_max << 21); qp_context->params2 |= cpu_to_be32(rra_max << 21);
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRA_MAX); qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRA_MAX);
qp->resp_depth = attr->max_rd_atomic; qp->resp_depth = attr->max_dest_rd_atomic;
} }
qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RSC); qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RSC);