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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162/* SPDX-License-Identifier: GPL-2.0 *//* * Cache coherency maintenance operation device drivers * * Copyright Huawei 2025 */#ifndef _LINUX_CACHE_COHERENCY_H_#define _LINUX_CACHE_COHERENCY_H_
#include <linux/list.h>#include <linux/kref.h>#include <linux/types.h>
struct cc_inval_params { phys_addr_t addr; size_t size;};
struct cache_coherency_ops_inst;
struct cache_coherency_ops { int (*wbinv)(struct cache_coherency_ops_inst *cci, struct cc_inval_params *invp); int (*done)(struct cache_coherency_ops_inst *cci);};
struct cache_coherency_ops_inst { struct kref kref; struct list_head node; const struct cache_coherency_ops *ops;};
int cache_coherency_ops_instance_register(struct cache_coherency_ops_inst *cci);void cache_coherency_ops_instance_unregister(struct cache_coherency_ops_inst *cci);
struct cache_coherency_ops_inst *_cache_coherency_ops_instance_alloc(const struct cache_coherency_ops *ops, size_t size);/** * cache_coherency_ops_instance_alloc - Allocate cache coherency ops instance * @ops: Cache maintenance operations * @drv_struct: structure that contains the struct cache_coherency_ops_inst * @member: Name of the struct cache_coherency_ops_inst member in @drv_struct. * * This allocates a driver specific structure and initializes the * cache_coherency_ops_inst embedded in the drv_struct. Upon success the * pointer must be freed via cache_coherency_ops_instance_put(). * * Returns a &drv_struct * on success, %NULL on error. */#define cache_coherency_ops_instance_alloc(ops, drv_struct, member) \ ({ \ static_assert(__same_type(struct cache_coherency_ops_inst, \ ((drv_struct *)NULL)->member)); \ static_assert(offsetof(drv_struct, member) == 0); \ (drv_struct *)_cache_coherency_ops_instance_alloc(ops, \ sizeof(drv_struct)); \ })void cache_coherency_ops_instance_put(struct cache_coherency_ops_inst *cci);
#endif