ehea: code cleanup

This patch includes:

- code cleanup related to resource management
- extended error data gathering for resource management
- removing trailing whitespaces

Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 134 insertions, 50 deletions

diff --git a/drivers/net/ehea/ehea_qmr.c b/drivers/net/ehea/ehea_qmr.c
index 96ff3b679996..f24a8862977d 100644
--- a/drivers/net/ehea/ehea_qmr.c
+++ b/drivers/net/ehea/ehea_qmr.c
@@ -197,7 +197,7 @@ out_kill_hwq:
         hw_queue_dtor(&cq->hw_queue);
 
 out_freeres:
-        ehea_h_free_resource(adapter->handle, cq->fw_handle);
+        ehea_h_free_resource(adapter->handle, cq->fw_handle, FORCE_FREE);
 
 out_freemem:
         kfree(cq);
@@ -206,25 +206,38 @@ out_nomem:
         return NULL;
 }
 
-int ehea_destroy_cq(struct ehea_cq *cq)
+u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
 {
-        u64 adapter_handle, hret;
+        u64 hret;
+        u64 adapter_handle = cq->adapter->handle;
+
+        /* deregister all previous registered pages */
+        hret = ehea_h_free_resource(adapter_handle, cq->fw_handle, force);
+        if (hret != H_SUCCESS)
+                return hret;
+
+        hw_queue_dtor(&cq->hw_queue);
+        kfree(cq);
+
+        return hret;
+}
 
+int ehea_destroy_cq(struct ehea_cq *cq)
+{
+        u64 hret;
         if (!cq)
                 return 0;
 
-        adapter_handle = cq->adapter->handle;
+        if ((hret = ehea_destroy_cq_res(cq, NORMAL_FREE)) == H_R_STATE) {
+                ehea_error_data(cq->adapter, cq->fw_handle);
+                hret = ehea_destroy_cq_res(cq, FORCE_FREE);
+        }
 
-        /* deregister all previous registered pages */
-        hret = ehea_h_free_resource(adapter_handle, cq->fw_handle);
         if (hret != H_SUCCESS) {
                 ehea_error("destroy CQ failed");
                 return -EIO;
         }
 
-        hw_queue_dtor(&cq->hw_queue);
-        kfree(cq);
-
         return 0;
 }
 
@@ -297,7 +310,7 @@ out_kill_hwq:
         hw_queue_dtor(&eq->hw_queue);
 
 out_freeres:
-        ehea_h_free_resource(adapter->handle, eq->fw_handle);
+        ehea_h_free_resource(adapter->handle, eq->fw_handle, FORCE_FREE);
 
 out_freemem:
         kfree(eq);
@@ -316,27 +329,41 @@ struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq)
         return eqe;
 }
 
-int ehea_destroy_eq(struct ehea_eq *eq)
+u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
 {
         u64 hret;
         unsigned long flags;
 
-        if (!eq)
-                return 0;
-
         spin_lock_irqsave(&eq->spinlock, flags);
 
-        hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle);
+        hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle, force);
         spin_unlock_irqrestore(&eq->spinlock, flags);
 
-        if (hret != H_SUCCESS) {
-                ehea_error("destroy_eq failed");
-                return -EIO;
-        }
+        if (hret != H_SUCCESS)
+                return hret;
 
         hw_queue_dtor(&eq->hw_queue);
         kfree(eq);
 
+        return hret;
+}
+
+int ehea_destroy_eq(struct ehea_eq *eq)
+{
+        u64 hret;
+        if (!eq)
+                return 0;
+
+        if ((hret = ehea_destroy_eq_res(eq, NORMAL_FREE)) == H_R_STATE) {
+                ehea_error_data(eq->adapter, eq->fw_handle);
+                hret = ehea_destroy_eq_res(eq, FORCE_FREE);
+        }
+
+        if (hret != H_SUCCESS) {
+                ehea_error("destroy EQ failed");
+                return -EIO;
+        }
+
         return 0;
 }
 
@@ -471,41 +498,56 @@ out_kill_hwsq:
 
 out_freeres:
         ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle);
-        ehea_h_free_resource(adapter->handle, qp->fw_handle);
+        ehea_h_free_resource(adapter->handle, qp->fw_handle, FORCE_FREE);
 
 out_freemem:
         kfree(qp);
         return NULL;
 }
 
-int ehea_destroy_qp(struct ehea_qp *qp)
+u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
 {
-        u64 hret;
-        struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
+        u64 hret;
+        struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
 
-        if (!qp)
-                return 0;
 
-        ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
-        hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle);
-        if (hret != H_SUCCESS) {
-                ehea_error("destroy_qp failed");
-                return -EIO;
-        }
+        ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
+        hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle, force);
+        if (hret != H_SUCCESS)
+                return hret;
 
-        hw_queue_dtor(&qp->hw_squeue);
-        hw_queue_dtor(&qp->hw_rqueue1);
+        hw_queue_dtor(&qp->hw_squeue);
+        hw_queue_dtor(&qp->hw_rqueue1);
 
-        if (qp_attr->rq_count > 1)
-                hw_queue_dtor(&qp->hw_rqueue2);
-        if (qp_attr->rq_count > 2)
-                hw_queue_dtor(&qp->hw_rqueue3);
-        kfree(qp);
+        if (qp_attr->rq_count > 1)
+                hw_queue_dtor(&qp->hw_rqueue2);
+        if (qp_attr->rq_count > 2)
+                hw_queue_dtor(&qp->hw_rqueue3);
+        kfree(qp);
 
-        return 0;
+        return hret;
 }
 
-int ehea_reg_mr_adapter(struct ehea_adapter *adapter)
+int ehea_destroy_qp(struct ehea_qp *qp)
+{
+        u64 hret;
+        if (!qp)
+                return 0;
+
+        if ((hret = ehea_destroy_qp_res(qp, NORMAL_FREE)) == H_R_STATE) {
+                ehea_error_data(qp->adapter, qp->fw_handle);
+                hret = ehea_destroy_qp_res(qp, FORCE_FREE);
+        }
+
+        if (hret != H_SUCCESS) {
+                ehea_error("destroy QP failed");
+                return -EIO;
+        }
+
+        return 0;
+}
+
+int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
 {
         int i, k, ret;
         u64 hret, pt_abs, start, end, nr_pages;
@@ -526,14 +568,14 @@ int ehea_reg_mr_adapter(struct ehea_adapter *adapter)
 
         hret = ehea_h_alloc_resource_mr(adapter->handle, start, end - start,
                                         acc_ctrl, adapter->pd,
-                                        &adapter->mr.handle, &adapter->mr.lkey);
+                                        &mr->handle, &mr->lkey);
         if (hret != H_SUCCESS) {
                 ehea_error("alloc_resource_mr failed");
                 ret = -EIO;
                 goto out;
         }
 
-        adapter->mr.vaddr = KERNELBASE;
+        mr->vaddr = KERNELBASE;
         k = 0;
 
         while (nr_pages > 0) {
@@ -545,7 +587,7 @@ int ehea_reg_mr_adapter(struct ehea_adapter *adapter)
                                                              EHEA_PAGESIZE)));
 
                         hret = ehea_h_register_rpage_mr(adapter->handle,
-                                                        adapter->mr.handle, 0,
+                                                        mr->handle, 0,
                                                         0, (u64)pt_abs,
                                                         num_pages);
                         nr_pages -= num_pages;
@@ -554,34 +596,68 @@ int ehea_reg_mr_adapter(struct ehea_adapter *adapter)
                                                           (k * EHEA_PAGESIZE)));
 
                         hret = ehea_h_register_rpage_mr(adapter->handle,
-                                                        adapter->mr.handle, 0,
+                                                        mr->handle, 0,
                                                         0, abs_adr,1);
                         nr_pages--;
                 }
 
                 if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) {
                         ehea_h_free_resource(adapter->handle,
-                                                adapter->mr.handle);
-                        ehea_error("register_rpage_mr failed: hret = %lX",
-                                   hret);
+                                             mr->handle, FORCE_FREE);
+                        ehea_error("register_rpage_mr failed");
                         ret = -EIO;
                         goto out;
                 }
         }
 
         if (hret != H_SUCCESS) {
-                ehea_h_free_resource(adapter->handle, adapter->mr.handle);
-                ehea_error("register_rpage failed for last page: hret = %lX",
-                           hret);
+                ehea_h_free_resource(adapter->handle, mr->handle,
+                                     FORCE_FREE);
+                ehea_error("register_rpage failed for last page");
                 ret = -EIO;
                 goto out;
         }
+
+        mr->adapter = adapter;
         ret = 0;
 out:
         kfree(pt);
         return ret;
 }
 
+int ehea_rem_mr(struct ehea_mr *mr)
+{
+        u64 hret;
+
+        if (!mr || !mr->adapter)
+                return -EINVAL;
+
+        hret = ehea_h_free_resource(mr->adapter->handle, mr->handle,
+                                    FORCE_FREE);
+        if (hret != H_SUCCESS) {
+                ehea_error("destroy MR failed");
+                return -EIO;
+        }
+
+        return 0;
+}
+
+int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
+                 struct ehea_mr *shared_mr)
+{
+        u64 hret;
+
+        hret = ehea_h_register_smr(adapter->handle, old_mr->handle,
+                                   old_mr->vaddr, EHEA_MR_ACC_CTRL,
+                                   adapter->pd, shared_mr);
+        if (hret != H_SUCCESS)
+                return -EIO;
+
+        shared_mr->adapter = adapter;
+
+        return 0;
+}
+
 void print_error_data(u64 *data)
 {
         int length;
@@ -597,6 +673,14 @@ void print_error_data(u64 *data)
                 ehea_error("QP (resource=%lX) state: AER=0x%lX, AERR=0x%lX, "
                            "port=%lX", resource, data[6], data[12], data[22]);
 
+        if (type == 0x4) /* Completion Queue */
+                ehea_error("CQ (resource=%lX) state: AER=0x%lX", resource,
+                           data[6]);
+
+        if (type == 0x3) /* Event Queue */
+                ehea_error("EQ (resource=%lX) state: AER=0x%lX", resource,
+                           data[6]);
+
         ehea_dump(data, length, "error data");
 }