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90 lines
3.0 KiB
90 lines
3.0 KiB
/* |
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* Keystone Navigator Queue Management Sub-System header |
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* |
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* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com |
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* Author: Sandeep Nair <[email protected]> |
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* Cyril Chemparathy <[email protected]> |
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* Santosh Shilimkar <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation version 2. |
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* |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any |
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* kind, whether express or implied; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#ifndef __SOC_TI_KNAV_QMSS_H__ |
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#define __SOC_TI_KNAV_QMSS_H__ |
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#include <linux/err.h> |
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#include <linux/time.h> |
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#include <linux/atomic.h> |
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#include <linux/device.h> |
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#include <linux/fcntl.h> |
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#include <linux/dma-mapping.h> |
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/* queue types */ |
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#define KNAV_QUEUE_QPEND ((unsigned)-2) /* interruptible qpend queue */ |
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#define KNAV_QUEUE_ACC ((unsigned)-3) /* Accumulated queue */ |
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#define KNAV_QUEUE_GP ((unsigned)-4) /* General purpose queue */ |
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/* queue flags */ |
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#define KNAV_QUEUE_SHARED 0x0001 /* Queue can be shared */ |
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/** |
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* enum knav_queue_ctrl_cmd - queue operations. |
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* @KNAV_QUEUE_GET_ID: Get the ID number for an open queue |
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* @KNAV_QUEUE_FLUSH: forcibly empty a queue if possible |
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* @KNAV_QUEUE_SET_NOTIFIER: Set a notifier callback to a queue handle. |
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* @KNAV_QUEUE_ENABLE_NOTIFY: Enable notifier callback for a queue handle. |
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* @KNAV_QUEUE_DISABLE_NOTIFY: Disable notifier callback for a queue handle. |
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* @KNAV_QUEUE_GET_COUNT: Get number of queues. |
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*/ |
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enum knav_queue_ctrl_cmd { |
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KNAV_QUEUE_GET_ID, |
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KNAV_QUEUE_FLUSH, |
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KNAV_QUEUE_SET_NOTIFIER, |
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KNAV_QUEUE_ENABLE_NOTIFY, |
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KNAV_QUEUE_DISABLE_NOTIFY, |
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KNAV_QUEUE_GET_COUNT |
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}; |
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/* Queue notifier callback prototype */ |
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typedef void (*knav_queue_notify_fn)(void *arg); |
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/** |
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* struct knav_queue_notify_config: Notifier configuration |
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* @fn: Notifier function |
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* @fn_arg: Notifier function arguments |
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*/ |
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struct knav_queue_notify_config { |
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knav_queue_notify_fn fn; |
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void *fn_arg; |
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}; |
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void *knav_queue_open(const char *name, unsigned id, |
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unsigned flags); |
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void knav_queue_close(void *qhandle); |
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int knav_queue_device_control(void *qhandle, |
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enum knav_queue_ctrl_cmd cmd, |
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unsigned long arg); |
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dma_addr_t knav_queue_pop(void *qhandle, unsigned *size); |
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int knav_queue_push(void *qhandle, dma_addr_t dma, |
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unsigned size, unsigned flags); |
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void *knav_pool_create(const char *name, |
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int num_desc, int region_id); |
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void knav_pool_destroy(void *ph); |
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int knav_pool_count(void *ph); |
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void *knav_pool_desc_get(void *ph); |
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void knav_pool_desc_put(void *ph, void *desc); |
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int knav_pool_desc_map(void *ph, void *desc, unsigned size, |
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dma_addr_t *dma, unsigned *dma_sz); |
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void *knav_pool_desc_unmap(void *ph, dma_addr_t dma, unsigned dma_sz); |
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dma_addr_t knav_pool_desc_virt_to_dma(void *ph, void *virt); |
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void *knav_pool_desc_dma_to_virt(void *ph, dma_addr_t dma); |
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#endif /* __SOC_TI_KNAV_QMSS_H__ */
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