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1 | /** |
| 2 | * Copyright (c) 2010-2012 Broadcom. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions, and the following disclaimer, |
| 9 | * without modification. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. The names of the above-listed copyright holders may not be used |
| 14 | * to endorse or promote products derived from this software without |
| 15 | * specific prior written permission. |
| 16 | * |
| 17 | * ALTERNATIVELY, this software may be distributed under the terms of the |
| 18 | * GNU General Public License ("GPL") version 2, as published by the Free |
| 19 | * Software Foundation. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 22 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 25 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 27 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 28 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #ifndef VCHIQ_UTIL_H |
| 35 | #define VCHIQ_UTIL_H |
| 36 | |
| 37 | #include <linux/types.h> |
| 38 | #include <linux/semaphore.h> |
| 39 | #include <linux/mutex.h> |
| 40 | #include <linux/bitops.h> |
| 41 | #include <linux/kthread.h> |
| 42 | #include <linux/wait.h> |
| 43 | #include <linux/vmalloc.h> |
| 44 | #include <linux/jiffies.h> |
| 45 | #include <linux/delay.h> |
| 46 | #include <linux/string.h> |
| 47 | #include <linux/types.h> |
| 48 | #include <linux/interrupt.h> |
| 49 | #include <linux/random.h> |
| 3f07c014 |
50 | #include <linux/sched/signal.h> |
| 71bad7f0 |
51 | #include <linux/ctype.h> |
| 52 | #include <linux/uaccess.h> |
| 53 | #include <linux/time.h> /* for time_t */ |
| 54 | #include <linux/slab.h> |
| 55 | #include <linux/vmalloc.h> |
| 56 | |
| 57 | #include "vchiq_if.h" |
| 58 | |
| 59 | typedef struct { |
| 60 | int size; |
| 61 | int read; |
| 62 | int write; |
| 63 | int initialized; |
| 64 | |
| 65 | struct semaphore pop; |
| 66 | struct semaphore push; |
| 67 | |
| 68 | VCHIQ_HEADER_T **storage; |
| 69 | } VCHIU_QUEUE_T; |
| 70 | |
| 71 | extern int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size); |
| 72 | extern void vchiu_queue_delete(VCHIU_QUEUE_T *queue); |
| 73 | |
| 74 | extern int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue); |
| 75 | extern int vchiu_queue_is_full(VCHIU_QUEUE_T *queue); |
| 76 | |
| 77 | extern void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header); |
| 78 | |
| 79 | extern VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue); |
| 80 | extern VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue); |
| 81 | |
| 82 | #endif |
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