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Diffstat (limited to 'include/linux/soc/ti/knav_qmss.h')
-rw-r--r--include/linux/soc/ti/knav_qmss.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/include/linux/soc/ti/knav_qmss.h b/include/linux/soc/ti/knav_qmss.h
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+++ b/include/linux/soc/ti/knav_qmss.h
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+/*
+ * Keystone Navigator Queue Management Sub-System header
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ * Author: Sandeep Nair <sandeep_n@ti.com>
+ * Cyril Chemparathy <cyril@ti.com>
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __SOC_TI_KNAV_QMSS_H__
+#define __SOC_TI_KNAV_QMSS_H__
+
+#include <linux/err.h>
+#include <linux/time.h>
+#include <linux/atomic.h>
+#include <linux/device.h>
+#include <linux/fcntl.h>
+#include <linux/dma-mapping.h>
+
+/* queue types */
+#define KNAV_QUEUE_QPEND ((unsigned)-2) /* interruptible qpend queue */
+#define KNAV_QUEUE_ACC ((unsigned)-3) /* Accumulated queue */
+#define KNAV_QUEUE_GP ((unsigned)-4) /* General purpose queue */
+
+/* queue flags */
+#define KNAV_QUEUE_SHARED 0x0001 /* Queue can be shared */
+
+/**
+ * enum knav_queue_ctrl_cmd - queue operations.
+ * @KNAV_QUEUE_GET_ID: Get the ID number for an open queue
+ * @KNAV_QUEUE_FLUSH: forcibly empty a queue if possible
+ * @KNAV_QUEUE_SET_NOTIFIER: Set a notifier callback to a queue handle.
+ * @KNAV_QUEUE_ENABLE_NOTIFY: Enable notifier callback for a queue handle.
+ * @KNAV_QUEUE_DISABLE_NOTIFY: Disable notifier callback for a queue handle.
+ * @KNAV_QUEUE_GET_COUNT: Get number of queues.
+ */
+enum knav_queue_ctrl_cmd {
+ KNAV_QUEUE_GET_ID,
+ KNAV_QUEUE_FLUSH,
+ KNAV_QUEUE_SET_NOTIFIER,
+ KNAV_QUEUE_ENABLE_NOTIFY,
+ KNAV_QUEUE_DISABLE_NOTIFY,
+ KNAV_QUEUE_GET_COUNT
+};
+
+/* Queue notifier callback prototype */
+typedef void (*knav_queue_notify_fn)(void *arg);
+
+/**
+ * struct knav_queue_notify_config: Notifier configuration
+ * @fn: Notifier function
+ * @fn_arg: Notifier function arguments
+ */
+struct knav_queue_notify_config {
+ knav_queue_notify_fn fn;
+ void *fn_arg;
+};
+
+void *knav_queue_open(const char *name, unsigned id,
+ unsigned flags);
+void knav_queue_close(void *qhandle);
+int knav_queue_device_control(void *qhandle,
+ enum knav_queue_ctrl_cmd cmd,
+ unsigned long arg);
+dma_addr_t knav_queue_pop(void *qhandle, unsigned *size);
+int knav_queue_push(void *qhandle, dma_addr_t dma,
+ unsigned size, unsigned flags);
+
+void *knav_pool_create(const char *name,
+ int num_desc, int region_id);
+void knav_pool_destroy(void *ph);
+int knav_pool_count(void *ph);
+void *knav_pool_desc_get(void *ph);
+void knav_pool_desc_put(void *ph, void *desc);
+int knav_pool_desc_map(void *ph, void *desc, unsigned size,
+ dma_addr_t *dma, unsigned *dma_sz);
+void *knav_pool_desc_unmap(void *ph, dma_addr_t dma, unsigned dma_sz);
+dma_addr_t knav_pool_desc_virt_to_dma(void *ph, void *virt);
+void *knav_pool_desc_dma_to_virt(void *ph, dma_addr_t dma);
+
+#endif /* __SOC_TI_KNAV_QMSS_H__ */