Imported Upstream version 16.04

[deb_dpdk.git] / drivers / net / enic / base / vnic_intr.c

diff --git a/drivers/net/enic/base/vnic_intr.c b/drivers/net/enic/base/vnic_intr.c
new file mode 100644 (file)
index 0000000..04bb426
--- /dev/null
+++ b/drivers/net/enic/base/vnic_intr.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * Copyright (c) 2014, Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "vnic_dev.h"
+#include "vnic_intr.h"
+
+void vnic_intr_free(struct vnic_intr *intr)
+{
+       intr->ctrl = NULL;
+}
+
+int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
+       unsigned int index)
+{
+       intr->index = index;
+       intr->vdev = vdev;
+
+       intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
+       if (!intr->ctrl) {
+               pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
+       unsigned int coalescing_type, unsigned int mask_on_assertion)
+{
+       vnic_intr_coalescing_timer_set(intr, coalescing_timer);
+       iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
+       iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
+       iowrite32(0, &intr->ctrl->int_credits);
+}
+
+void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
+       u32 coalescing_timer)
+{
+       iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,
+               coalescing_timer), &intr->ctrl->coalescing_timer);
+}
+
+void vnic_intr_clean(struct vnic_intr *intr)
+{
+       iowrite32(0, &intr->ctrl->int_credits);
+}