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 
51 int ehca_error_data(struct ehca_shca *shca, void *data, u64 resource);
52 
53 irqreturn_t ehca_interrupt_neq(int irq, void *dev_id);
54 void ehca_tasklet_neq(unsigned long data);
55 
56 irqreturn_t ehca_interrupt_eq(int irq, void *dev_id);
57 void ehca_tasklet_eq(unsigned long data);
58 void ehca_process_eq(struct ehca_shca *shca, int is_irq);
59 
60 struct ehca_cpu_comp_task {
61 	wait_queue_head_t wait_queue;
62 	struct list_head cq_list;
63 	struct task_struct *task;
64 	spinlock_t task_lock;
65 	int cq_jobs;
66 };
67 
68 struct ehca_comp_pool {
69 	struct ehca_cpu_comp_task *cpu_comp_tasks;
70 	int last_cpu;
71 	spinlock_t last_cpu_lock;
72 };
73 
74 int ehca_create_comp_pool(void);
75 void ehca_destroy_comp_pool(void);
76 
77 #endif
78