[openib-general] [PATCH] mad.c/agent.c: use ib_get_dma_mr

[Roland Dreier]

Convert mad.c and agent.c to use ib_get_dma_mr() instead of
ib_reg_phys_mr().  This is simpler and is actually required on
platforms such as sparc64 where DMA addresses may not match up with
physical RAM addresses.

OK to commit?

 - Roland

Index: core/agent.c
===================================================================
--- core/agent.c        (revision 1172)
+++ core/agent.c        (working copy)
@@ -281,15 +281,9 @@
        kfree(agent_send_wr);
 }
 
-int ib_agent_port_open(struct ib_device *device, int port_num,
-                             int phys_port_cnt)
+int ib_agent_port_open(struct ib_device *device, int port_num)
 {
        int ret;
-       u64 iova = 0;
-       struct ib_phys_buf buf_list = {
-               .addr = 0,
-               .size = (unsigned long) high_memory - PAGE_OFFSET
-       };
        struct ib_agent_port_private *port_priv;
        struct ib_mad_reg_req reg_req;
        unsigned long flags;
@@ -312,7 +306,6 @@
 
        memset(port_priv, 0, sizeof *port_priv);
        port_priv->port_num = port_num;
-       port_priv->phys_port_cnt = phys_port_cnt;
        port_priv->wr_id = 0;
        spin_lock_init(&port_priv->send_list_lock);
        INIT_LIST_HEAD(&port_priv->send_posted_list);
@@ -356,9 +349,8 @@
                goto error4;
        }
 
-       port_priv->mr = ib_reg_phys_mr(port_priv->dr_smp_agent->qp->pd,
-                                     &buf_list, 1,
-                                      IB_ACCESS_LOCAL_WRITE, &iova);
+       port_priv->mr = ib_get_dma_mr(port_priv->dr_smp_agent->qp->pd,
+                                     IB_ACCESS_LOCAL_WRITE);
        if (IS_ERR(port_priv->mr)) {
                printk(KERN_ERR SPFX "Couldn't register MR\n");
                ret = PTR_ERR(port_priv->mr);
Index: core/mad.c
===================================================================
--- core/mad.c  (revision 1172)
+++ core/mad.c  (working copy)
@@ -1844,11 +1844,6 @@
                            int port_num)
 {
        int ret, cq_size;
-       u64 iova = 0;
-       struct ib_phys_buf buf_list = {
-               .addr = 0,
-               .size = (unsigned long) high_memory - PAGE_OFFSET
-       };
        struct ib_mad_port_private *port_priv;
        unsigned long flags;
 
@@ -1890,8 +1885,7 @@
                goto error4;
        }
 
-       port_priv->mr = ib_reg_phys_mr(port_priv->pd, &buf_list, 1,
-                                      IB_ACCESS_LOCAL_WRITE, &iova);
+       port_priv->mr = ib_get_dma_mr(port_priv->pd, IB_ACCESS_LOCAL_WRITE);
        if (IS_ERR(port_priv->mr)) {
                printk(KERN_ERR PFX "Couldn't register ib_mad MR\n");
                ret = PTR_ERR(port_priv->mr);
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