IB/ehca: Support small QP queues
[linux-2.6.git] / drivers / infiniband / hw / ehca / ehca_pd.c
index c85312ad292b3876a4231ee048699256b0bd40bd..3dafd7ff36cd52a636ef938dafeaacbc52fd045f 100644 (file)
@@ -49,6 +49,7 @@ struct ib_pd *ehca_alloc_pd(struct ib_device *device,
                            struct ib_ucontext *context, struct ib_udata *udata)
 {
        struct ehca_pd *pd;
+       int i;
 
        pd = kmem_cache_zalloc(pd_cache, GFP_KERNEL);
        if (!pd) {
@@ -58,6 +59,11 @@ struct ib_pd *ehca_alloc_pd(struct ib_device *device,
        }
 
        pd->ownpid = current->tgid;
+       for (i = 0; i < 2; i++) {
+               INIT_LIST_HEAD(&pd->free[i]);
+               INIT_LIST_HEAD(&pd->full[i]);
+       }
+       mutex_init(&pd->lock);
 
        /*
         * Kernel PD: when device = -1, 0
@@ -81,6 +87,9 @@ int ehca_dealloc_pd(struct ib_pd *pd)
 {
        u32 cur_pid = current->tgid;
        struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd);
+       int i, leftovers = 0;
+       extern struct kmem_cache *small_qp_cache;
+       struct ipz_small_queue_page *page, *tmp;
 
        if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
            my_pd->ownpid != cur_pid) {
@@ -89,8 +98,20 @@ int ehca_dealloc_pd(struct ib_pd *pd)
                return -EINVAL;
        }
 
-       kmem_cache_free(pd_cache,
-                       container_of(pd, struct ehca_pd, ib_pd));
+       for (i = 0; i < 2; i++) {
+               list_splice(&my_pd->full[i], &my_pd->free[i]);
+               list_for_each_entry_safe(page, tmp, &my_pd->free[i], list) {
+                       leftovers = 1;
+                       free_page(page->page);
+                       kmem_cache_free(small_qp_cache, page);
+               }
+       }
+
+       if (leftovers)
+               ehca_warn(pd->device,
+                         "Some small queue pages were not freed");
+
+       kmem_cache_free(pd_cache, my_pd);
 
        return 0;
 }