[PATCH] IB/mthca: Add SRQ implementation

Add mthca support for shared receive queues (SRQs),
including userspace SRQs.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index c258c1b7022e..60e4b213635a 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -109,6 +109,7 @@ enum {
         CMD_SW2HW_SRQ       = 0x35,
         CMD_HW2SW_SRQ       = 0x36,
         CMD_QUERY_SRQ       = 0x37,
+        CMD_ARM_SRQ         = 0x40,
 
         /* QP/EE commands */
         CMD_RST2INIT_QPEE   = 0x19,
@@ -1032,6 +1033,8 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 
         mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
                   dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
+        mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
+                  dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
         mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
                   dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
         mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
@@ -1500,6 +1503,27 @@ int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
                              CMD_TIME_CLASS_A, status);
 }
 
+int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+                    int srq_num, u8 *status)
+{
+        return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
+                        CMD_TIME_CLASS_A, status);
+}
+
+int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+                    int srq_num, u8 *status)
+{
+        return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
+                             CMD_HW2SW_SRQ,
+                             CMD_TIME_CLASS_A, status);
+}
+
+int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status)
+{
+        return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
+                         CMD_TIME_CLASS_B, status);
+}
+
 int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
                     int is_ee, struct mthca_mailbox *mailbox, u32 optmask,
                     u8 *status)