diff options
Diffstat (limited to 'drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.h')
-rw-r--r-- | drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.h new file mode 100644 index 000000000000..4055d4bf9f74 --- /dev/null +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.h @@ -0,0 +1,82 @@ +/** + * Copyright (c) 2010-2012 Broadcom. 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, + * without modification. + * 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. + * 3. The names of the above-listed copyright holders may not be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2, as published by the Free + * Software Foundation. + * + * 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 OWNER 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. + */ + +#ifndef VCHIQ_UTIL_H +#define VCHIQ_UTIL_H + +#include <linux/types.h> +#include <linux/semaphore.h> +#include <linux/mutex.h> +#include <linux/bitops.h> +#include <linux/kthread.h> +#include <linux/wait.h> +#include <linux/vmalloc.h> +#include <linux/jiffies.h> +#include <linux/delay.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/random.h> +#include <linux/sched.h> +#include <linux/ctype.h> +#include <linux/uaccess.h> +#include <linux/time.h> /* for time_t */ +#include <linux/slab.h> +#include <linux/vmalloc.h> + +#include "vchiq_if.h" + +typedef struct { + int size; + int read; + int write; + int initialized; + + struct semaphore pop; + struct semaphore push; + + VCHIQ_HEADER_T **storage; +} VCHIU_QUEUE_T; + +extern int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size); +extern void vchiu_queue_delete(VCHIU_QUEUE_T *queue); + +extern int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue); +extern int vchiu_queue_is_full(VCHIU_QUEUE_T *queue); + +extern void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header); + +extern VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue); +extern VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue); + +#endif |