Imported Upstream version 16.04

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

diff --git a/drivers/net/enic/base/vnic_cq.c b/drivers/net/enic/base/vnic_cq.c
new file mode 100644 (file)
index 0000000..2f65f35
--- /dev/null
+++ b/drivers/net/enic/base/vnic_cq.c
@@ -0,0 +1,116 @@
+/*
+ * 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_cq.h"
+
+int vnic_cq_mem_size(struct vnic_cq *cq, unsigned int desc_count,
+       unsigned int desc_size)
+{
+       int mem_size;
+
+       mem_size = vnic_dev_desc_ring_size(&cq->ring, desc_count, desc_size);
+
+       return mem_size;
+}
+
+void vnic_cq_free(struct vnic_cq *cq)
+{
+       vnic_dev_free_desc_ring(cq->vdev, &cq->ring);
+
+       cq->ctrl = NULL;
+}
+
+int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
+       unsigned int socket_id,
+       unsigned int desc_count, unsigned int desc_size)
+{
+       int err;
+       char res_name[NAME_MAX];
+       static int instance;
+
+       cq->index = index;
+       cq->vdev = vdev;
+
+       cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index);
+       if (!cq->ctrl) {
+               pr_err("Failed to hook CQ[%d] resource\n", index);
+               return -EINVAL;
+       }
+
+       snprintf(res_name, sizeof(res_name), "%d-cq-%d", instance++, index);
+       err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size,
+               socket_id, res_name);
+       if (err)
+               return err;
+
+       return 0;
+}
+
+void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
+       unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
+       unsigned int cq_tail_color, unsigned int interrupt_enable,
+       unsigned int cq_entry_enable, unsigned int cq_message_enable,
+       unsigned int interrupt_offset, u64 cq_message_addr)
+{
+       u64 paddr;
+
+       paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
+       writeq(paddr, &cq->ctrl->ring_base);
+       iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
+       iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
+       iowrite32(color_enable, &cq->ctrl->color_enable);
+       iowrite32(cq_head, &cq->ctrl->cq_head);
+       iowrite32(cq_tail, &cq->ctrl->cq_tail);
+       iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
+       iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
+       iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);
+       iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
+       iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
+       writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
+
+       cq->interrupt_offset = interrupt_offset;
+}
+
+void vnic_cq_clean(struct vnic_cq *cq)
+{
+       cq->to_clean = 0;
+       cq->last_color = 0;
+
+       iowrite32(0, &cq->ctrl->cq_head);
+       iowrite32(0, &cq->ctrl->cq_tail);
+       iowrite32(1, &cq->ctrl->cq_tail_color);
+
+       vnic_dev_clear_desc_ring(&cq->ring);
+}