/*
   * Copyright 2008 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) {
  		printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource
  ",
  			index);
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
  	unsigned int coalescing_type, unsigned int mask_on_assertion)
  {
  	iowrite32(coalescing_timer, &intr->ctrl->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_clean(struct vnic_intr *intr)
  {
  	iowrite32(0, &intr->ctrl->int_credits);
  }

  
  void vnic_intr_raise(struct vnic_intr *intr)
  {
  	vnic_dev_raise_intr(intr->vdev, (u16)intr->index);
  }