/**
* @file
*
* @ingroup test_bdbuf
*
* @brief Bdbuf test for disk driver error handling..
*/
/*
* Copyright (c) 2009
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <assert.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/bdbuf.h>
#include <rtems/diskdevs.h>
#define ASSERT_SC(sc) assert((sc) == RTEMS_SUCCESSFUL)
#define BLOCK_SIZE sizeof(char)
#define BLOCK_COUNT 4
#define BLOCK_READ_IO_ERROR 0
#define BLOCK_READ_UNSATISFIED 1
#define BLOCK_READ_SUCCESSFUL 2
#define BLOCK_WRITE_IO_ERROR 3
static char disk_data [BLOCK_COUNT];
static const rtems_driver_address_table disk_ops = {
.initialization_entry = NULL,
RTEMS_GENERIC_BLOCK_DEVICE_DRIVER_ENTRIES
};
static int disk_ioctl(rtems_disk_device *dd, uint32_t req, void *arg)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
if (req == RTEMS_BLKIO_REQUEST) {
rtems_blkdev_request *r = arg;
uint32_t i = 0;
for (i = 0; i < r->bufnum; ++i) {
rtems_blkdev_sg_buffer *sg = &r->bufs [i];
char *buf = sg->buffer;
if (sg->length != 1) {
return -1;
}
switch (r->req) {
case RTEMS_BLKDEV_REQ_READ:
switch (sg->block) {
case BLOCK_READ_IO_ERROR:
sc = RTEMS_IO_ERROR;
break;
case BLOCK_READ_UNSATISFIED:
sc = RTEMS_UNSATISFIED;
break;
case BLOCK_READ_SUCCESSFUL:
case BLOCK_WRITE_IO_ERROR:
*buf = disk_data [sg->block];
break;
default:
return -1;
}
break;
case RTEMS_BLKDEV_REQ_WRITE:
switch (sg->block) {
case BLOCK_READ_IO_ERROR:
case BLOCK_READ_UNSATISFIED:
case BLOCK_READ_SUCCESSFUL:
disk_data [sg->block] = *buf;
break;
case BLOCK_WRITE_IO_ERROR:
sc = RTEMS_IO_ERROR;
break;
default:
return -1;
}
break;
default:
return -1;
}
}
r->req_done(r->done_arg, sc);
return 0;
} else {
return rtems_blkdev_ioctl(dd, req, arg);
}
}
rtems_status_code disk_register(
uint32_t block_size,
rtems_blkdev_bnum block_count,
dev_t *dev_ptr
)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_device_major_number major = 0;
dev_t dev = 0;
sc = rtems_io_register_driver(0, &disk_ops, &major);
ASSERT_SC(sc);
dev = rtems_filesystem_make_dev_t(major, 0);
sc = rtems_disk_create_phys(
dev,
block_size,
block_count,
disk_ioctl,
NULL,
NULL
);
ASSERT_SC(sc);
*dev_ptr = dev;
return RTEMS_SUCCESSFUL;
}
static void check_read(
dev_t dev,
rtems_blkdev_bnum block,
rtems_status_code expected_sc
)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_bdbuf_buffer *bd = NULL;
sc = rtems_bdbuf_read(dev, block, &bd);
assert(sc == expected_sc);
if (sc == RTEMS_SUCCESSFUL) {
sc = rtems_bdbuf_release(bd);
ASSERT_SC(sc);
}
}
static rtems_task Init(rtems_task_argument argument)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_bdbuf_buffer *bd = NULL;
dev_t dev = 0;
printk("\n\n*** TEST BLOCK 9 ***\n");
sc = rtems_disk_io_initialize();
ASSERT_SC(sc);
sc = disk_register(BLOCK_SIZE, BLOCK_COUNT, &dev);
ASSERT_SC(sc);
check_read(dev, BLOCK_READ_IO_ERROR, RTEMS_IO_ERROR);
check_read(dev, BLOCK_READ_UNSATISFIED, RTEMS_UNSATISFIED);
check_read(dev, BLOCK_READ_SUCCESSFUL, RTEMS_SUCCESSFUL);
check_read(dev, BLOCK_WRITE_IO_ERROR, RTEMS_SUCCESSFUL);
/* Check write IO error */
sc = rtems_bdbuf_read(dev, BLOCK_WRITE_IO_ERROR, &bd);
ASSERT_SC(sc);
bd->buffer [0] = 1;
sc = rtems_bdbuf_sync(bd);
ASSERT_SC(sc);
sc = rtems_bdbuf_read(dev, BLOCK_WRITE_IO_ERROR, &bd);
ASSERT_SC(sc);
assert(bd->buffer [0] == 0);
sc = rtems_bdbuf_release(bd);
ASSERT_SC(sc);
/* Check write to deleted disk */
sc = rtems_bdbuf_read(dev, BLOCK_READ_SUCCESSFUL, &bd);
ASSERT_SC(sc);
sc = rtems_disk_delete(dev);
ASSERT_SC(sc);
sc = rtems_bdbuf_sync(bd);
ASSERT_SC(sc);
printk("*** END OF TEST BLOCK 9 ***\n");
exit(0);
}
#define CONFIGURE_INIT
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK
#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
#define CONFIGURE_MAXIMUM_TASKS 3
#define CONFIGURE_MAXIMUM_DRIVERS 4
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_BDBUF_BUFFER_MIN_SIZE BLOCK_SIZE
#define CONFIGURE_BDBUF_BUFFER_MAX_SIZE BLOCK_SIZE
#define CONFIGURE_BDBUF_CACHE_MEMORY_SIZE (BLOCK_SIZE * BLOCK_COUNT)
#include <rtems/confdefs.h>