bhnd_nvram_io.h

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    1 /*-
    2  * Copyright (c) 2016 Landon Fuller <landonf@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer,
   10  *    without modification.
   11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   13  *    redistribution must be conditioned upon including a substantially
   14  *    similar Disclaimer requirement for further binary redistribution.
   15  *
   16  * NO WARRANTY
   17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   27  * THE POSSIBILITY OF SUCH DAMAGES.
   28  * 
   29  * $FreeBSD$
   30  */
   31 
   32 #ifndef _BHND_NVRAM_BHND_NVRAM_IO_H_
   33 #define _BHND_NVRAM_BHND_NVRAM_IO_H_
   34 
   35 #ifdef _KERNEL
   36 #include <sys/param.h>
   37 
   38 #include <dev/bhnd/bhnd.h>
   39 #else /* !_KERNEL */
   40 #include <errno.h>
   41 
   42 #include <stdbool.h>
   43 #include <stdint.h>
   44 #include <stdlib.h>
   45 #endif /* _KERNEL */
   46 
   47 struct bhnd_nvram_io;
   48 
   49 struct bhnd_nvram_io    *bhnd_nvram_iobuf_new(const void *buffer, size_t size);
   50 struct bhnd_nvram_io    *bhnd_nvram_iobuf_empty(size_t size, size_t capacity);
   51 struct bhnd_nvram_io    *bhnd_nvram_iobuf_copy(struct bhnd_nvram_io *src);
   52 struct bhnd_nvram_io    *bhnd_nvram_iobuf_copy_range(struct bhnd_nvram_io *src,
   53                              size_t offset, size_t size);
   54 
   55 struct bhnd_nvram_io    *bhnd_nvram_ioptr_new(const void *ptr, size_t size,
   56                              size_t capacity, uint32_t flags);
   57 
   58 #ifdef _KERNEL
   59 struct bhnd_nvram_io    *bhnd_nvram_iores_new(struct bhnd_resource *r,
   60                              bus_size_t offset, bus_size_t size,
   61                              u_int bus_width);
   62 #endif /* _KERNEL */
   63 
   64 size_t                   bhnd_nvram_io_getsize(struct bhnd_nvram_io *io);
   65 int                      bhnd_nvram_io_setsize(struct bhnd_nvram_io *io,
   66                              size_t size);
   67 
   68 int                      bhnd_nvram_io_read(struct bhnd_nvram_io *io,
   69                              size_t offset, void *buffer, size_t nbytes);
   70 int                      bhnd_nvram_io_read_ptr(struct bhnd_nvram_io *io,
   71                              size_t offset, const void **ptr, size_t nbytes,
   72                              size_t *navail);
   73 
   74 int                      bhnd_nvram_io_write(struct bhnd_nvram_io *io,
   75                              size_t offset, void *buffer, size_t nbytes);
   76 int                      bhnd_nvram_io_write_ptr(struct bhnd_nvram_io *io,
   77                              size_t offset, void **ptr, size_t nbytes,
   78                              size_t *navail);
   79 
   80 void                     bhnd_nvram_io_free(struct bhnd_nvram_io *io);
   81 
   82 /**
   83  * bhnd_nvram_ioptr flags
   84  */
   85 enum {
   86         BHND_NVRAM_IOPTR_RDONLY = (1<<0),       /**< read-only */
   87         BHND_NVRAM_IOPTR_RDWR   = (1<<1),       /**< read/write */
   88 };
   89 
   90 #endif /* _BHND_NVRAM_BHND_NVRAM_IO_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/bhnd/nvram/bhnd_nvram_io.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/bhnd/nvram/bhnd_nvram_io.h