Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / cisco / enic / vnic_intr.c

diff --git a/kernel/drivers/net/ethernet/cisco/enic/vnic_intr.c b/kernel/drivers/net/ethernet/cisco/enic/vnic_intr.c
new file mode 100644 (file)
index 0000000..0ca107f
--- /dev/null
+++ b/kernel/drivers/net/ethernet/cisco/enic/vnic_intr.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+
+#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);
+}