drivers/infiniband/hw/ehca/ehca_irq.h

   1 /*
   2  *  IBM eServer eHCA Infiniband device driver for Linux on POWER
   3  *
   4  *  Function definitions and structs for EQs, NEQs and interrupts
   5  *
   6  *  Authors: Heiko J Schick <schickhj@de.ibm.com>
   7  *           Khadija Souissi <souissi@de.ibm.com>
   8  *
   9  *  Copyright (c) 2005 IBM Corporation
  10  *
  11  *  All rights reserved.
  12  *
  13  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
  14  *  BSD.
  15  *
  16  * OpenIB BSD License
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions are met:
  20  *
  21  * Redistributions of source code must retain the above copyright notice, this
  22  * list of conditions and the following disclaimer.
  23  *
  24  * Redistributions in binary form must reproduce the above copyright notice,
  25  * this list of conditions and the following disclaimer in the documentation
  26  * and/or other materials
  27  * provided with the distribution.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  30  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  33  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  36  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  37  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39  * POSSIBILITY OF SUCH DAMAGE.
  40  */
  41
  42 #ifndef __EHCA_IRQ_H
  43 #define __EHCA_IRQ_H
  44
  45
  46 struct ehca_shca;
  47
  48 #include <linux/interrupt.h>
  49 #include <linux/types.h>
  50 #include <asm/atomic.h>
  51
  52 int ehca_error_data(struct ehca_shca *shca, void *data, u64 resource);
  53
  54 irqreturn_t ehca_interrupt_neq(int irq, void *dev_id);
  55 void ehca_tasklet_neq(unsigned long data);
  56
  57 irqreturn_t ehca_interrupt_eq(int irq, void *dev_id);
  58 void ehca_tasklet_eq(unsigned long data);
  59 void ehca_process_eq(struct ehca_shca *shca, int is_irq);
  60
  61 struct ehca_cpu_comp_task {
  62         wait_queue_head_t wait_queue;
  63         struct list_head cq_list;
  64         struct task_struct *task;
  65         spinlock_t task_lock;
  66         int cq_jobs;
  67 };
  68
  69 struct ehca_comp_pool {
  70         struct ehca_cpu_comp_task *cpu_comp_tasks;
  71         int last_cpu;
  72         spinlock_t last_cpu_lock;
  73 };
  74
  75 int ehca_create_comp_pool(void);
  76 void ehca_destroy_comp_pool(void);
  77
  78 #endif