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/*-
* Copyright (c) 2013-2014 Robert N. M. Watson
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <bootstrap.h>
#include <stdarg.h>
#include <stand.h>
#include <disk.h>
#include <sdcard.h>
static int beri_sdcard_disk_init(void);
static int beri_sdcard_disk_open(struct open_file *, ...);
static int beri_sdcard_disk_close(struct open_file *);
static int beri_sdcard_disk_strategy(void *, int, daddr_t, size_t,
char *, size_t *);
static int beri_sdcard_disk_print(int);
struct devsw beri_sdcard_disk = {
.dv_name = "sdcard",
.dv_type = DEVT_DISK,
.dv_init = beri_sdcard_disk_init,
.dv_strategy = beri_sdcard_disk_strategy,
.dv_open = beri_sdcard_disk_open,
.dv_close = beri_sdcard_disk_close,
.dv_ioctl = noioctl,
.dv_print = beri_sdcard_disk_print,
.dv_cleanup = NULL,
};
static int
beri_sdcard_disk_init(void)
{
return (0);
}
static int
beri_sdcard_disk_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
char *buf, size_t *rsizep)
{
int error;
flag &= F_MASK;
if (flag == F_WRITE)
return (EROFS);
if (flag != F_READ)
return (EINVAL);
if (rsizep != NULL)
*rsizep = 0;
error = altera_sdcard_read(buf, dblk, size >> 9);
if (error == 0 && rsizep != NULL)
*rsizep = size;
else if (error != 0)
printf("%s: error %d\n", __func__, error);
return (error);
}
static int
beri_sdcard_disk_open(struct open_file *f, ...)
{
va_list ap;
struct disk_devdesc *dev;
va_start(ap, f);
dev = va_arg(ap, struct disk_devdesc *);
va_end(ap);
if (!(altera_sdcard_get_present())) {
printf("SD card not present or not supported\n");
return (ENXIO);
}
if (dev->d_unit != 0)
return (EIO);
return (disk_open(dev, altera_sdcard_get_mediasize(),
altera_sdcard_get_sectorsize()));
}
static int
beri_sdcard_disk_close(struct open_file *f)
{
struct disk_devdesc *dev;
dev = (struct disk_devdesc *)f->f_devdata;
return (disk_close(dev));
}
static int
beri_sdcard_disk_print(int verbose)
{
struct disk_devdesc dev;
char line[80];
int ret;
printf("%s devices:", beri_sdcard_disk.dv_name);
if ((ret = pager_output("\n")) != 0)
return (ret);
snprintf(line, sizeof(line), " sdcard%d Altera SD card drive\n", 0);
ret = pager_output(line);
if (ret != 0)
return (ret);
dev.d_dev = &beri_sdcard_disk;
dev.d_unit = 0;
dev.d_slice = -1;
dev.d_partition = -1;
if (disk_open(&dev, altera_sdcard_get_mediasize(),
altera_sdcard_get_sectorsize()) == 0) {
snprintf(line, sizeof(line), " sdcard%d", 0);
ret = disk_print(&dev, line, verbose);
disk_close(&dev);
}
return (ret);
}
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