75b996503a
It's now possible to use Broadcom functions to read the I/O registers of
SDIO card. The functions were copied from the BSD-licensed Broadcom Linux driver
as-is. To make it possible, a small Linux compatibility layer was introduced.
Currently the card responds with the correct version number ("magic")
when reading the corresponding address.
Approved by: imp (mentor)
Differential Revision: https://reviews.freebsd.org/D12111
105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/*-
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* Copyright (c) 2016-2017 Ilya Bakulin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/ioctl.h>
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#include <sys/stdint.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/endian.h>
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#include <sys/sbuf.h>
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#include <sys/mman.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <err.h>
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#include <libutil.h>
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#include <unistd.h>
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#include <cam/cam.h>
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#include <cam/cam_debug.h>
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#include <cam/cam_ccb.h>
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#include <cam/mmc/mmc_all.h>
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#include <camlib.h>
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#include "linux_compat.h"
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#include "linux_sdio_compat.h"
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#include "cam_sdio.h"
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u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret) {
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return sdio_read_1(func->dev, func->num, addr, err_ret);
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}
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unsigned char sdio_f0_readb(struct sdio_func *func, unsigned int addr, int *err_ret) {
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return sdio_readb(func, addr, err_ret);
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}
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u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret) {
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return sdio_read_2(func->dev, func->num, addr, err_ret);
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}
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u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret) {
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return sdio_read_4(func->dev, func->num, addr, err_ret);
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}
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void sdio_writeb(struct sdio_func *func, u8 b,
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unsigned int addr, int *err_ret) {
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*err_ret = sdio_write_1(func->dev, func->num, addr, b);
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}
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/* Only writes to the vendor specific CCCR registers
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* (0xF0 - 0xFF) are permiited. */
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void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
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unsigned int addr, int *err_ret)
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{
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if (addr < 0xF0 || addr > 0xFF) {
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if (err_ret)
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*err_ret = -EINVAL;
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return;
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}
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sdio_writeb(func, b, addr, err_ret);
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}
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void sdio_writew(struct sdio_func *func, u16 b,
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unsigned int addr, int *err_ret) {
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*err_ret = sdio_write_2(func->dev, func->num, addr, b);
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}
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void sdio_writel(struct sdio_func *func, u32 b,
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unsigned int addr, int *err_ret) {
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*err_ret = sdio_write_4(func->dev, func->num, addr, b);
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}
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