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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263/* SPDX-License-Identifier: GPL-2.0 *//* * Copyright (C) 2021 Intel Corporation * Author: johannes@sipsolutions.net */#ifndef __LOGIC_IOMEM_H#define __LOGIC_IOMEM_H#include <linux/types.h>#include <linux/ioport.h>
/** * struct logic_iomem_ops - emulated IO memory ops * @read: read an 8, 16, 32 or 64 bit quantity from the given offset, * size is given in bytes (1, 2, 4 or 8) * (64-bit only necessary if CONFIG_64BIT is set) * @write: write an 8, 16 32 or 64 bit quantity to the given offset, * size is given in bytes (1, 2, 4 or 8) * (64-bit only necessary if CONFIG_64BIT is set) * @set: optional, for memset_io() * @copy_from: optional, for memcpy_fromio() * @copy_to: optional, for memcpy_toio() * @unmap: optional, this region is getting unmapped */struct logic_iomem_ops { unsigned long (*read)(void *priv, unsigned int offset, int size); void (*write)(void *priv, unsigned int offset, int size, unsigned long val);
void (*set)(void *priv, unsigned int offset, u8 value, int size); void (*copy_from)(void *priv, void *buffer, unsigned int offset, int size); void (*copy_to)(void *priv, unsigned int offset, const void *buffer, int size);
void (*unmap)(void *priv);};
/** * struct logic_iomem_region_ops - ops for an IO memory handler * @map: map a range in the registered IO memory region, must * fill *ops with the ops and may fill *priv to be passed * to the ops. The offset is given as the offset into the * registered resource region. * The return value is negative for errors, or >= 0 for * success. On success, the return value is added to the * offset for later ops, to allow for partial mappings. */struct logic_iomem_region_ops { long (*map)(unsigned long offset, size_t size, const struct logic_iomem_ops **ops, void **priv);};
/** * logic_iomem_add_region - register an IO memory region * @resource: the resource description for this region * @ops: the IO memory mapping ops for this resource */int logic_iomem_add_region(struct resource *resource, const struct logic_iomem_region_ops *ops);
#endif /* __LOGIC_IOMEM_H */