forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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* OF helpers for DMA request / controller
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*
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* Based on of_gpio.h
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __LINUX_OF_DMA_H
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#define __LINUX_OF_DMA_H
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#include <linux/of.h>
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#include <linux/dmaengine.h>
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struct device_node;
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struct of_dma {
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struct list_head of_dma_controllers;
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struct device_node *of_node;
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struct dma_chan *(*of_dma_xlate)
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(struct of_phandle_args *, struct of_dma *);
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void *(*of_dma_route_allocate)
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(struct of_phandle_args *, struct of_dma *);
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struct dma_router *dma_router;
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void *of_dma_data;
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};
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struct of_dma_filter_info {
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dma_cap_mask_t dma_cap;
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dma_filter_fn filter_fn;
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};
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#ifdef CONFIG_DMA_OF
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extern int of_dma_controller_register(struct device_node *np,
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struct dma_chan *(*of_dma_xlate)
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(struct of_phandle_args *, struct of_dma *),
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void *data);
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extern void of_dma_controller_free(struct device_node *np);
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extern int of_dma_router_register(struct device_node *np,
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void *(*of_dma_route_allocate)
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(struct of_phandle_args *, struct of_dma *),
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struct dma_router *dma_router);
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#define of_dma_router_free of_dma_controller_free
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extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
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const char *name);
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extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec,
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struct of_dma *ofdma);
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extern struct dma_chan *of_dma_xlate_by_chan_id(struct of_phandle_args *dma_spec,
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struct of_dma *ofdma);
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#else
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static inline int of_dma_controller_register(struct device_node *np,
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struct dma_chan *(*of_dma_xlate)
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(struct of_phandle_args *, struct of_dma *),
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void *data)
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{
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return -ENODEV;
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}
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static inline void of_dma_controller_free(struct device_node *np)
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{
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}
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static inline int of_dma_router_register(struct device_node *np,
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void *(*of_dma_route_allocate)
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(struct of_phandle_args *, struct of_dma *),
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struct dma_router *dma_router)
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{
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return -ENODEV;
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}
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#define of_dma_router_free of_dma_controller_free
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static inline struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
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const char *name)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec,
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struct of_dma *ofdma)
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{
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return NULL;
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}
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#define of_dma_xlate_by_chan_id NULL
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#endif
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#endif /* __LINUX_OF_DMA_H */
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