uspace/app/tester/ipc/readwrite.c

   1 /*
   2  * Copyright (c) 2023 Jiri Svoboda
   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  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <as.h>
  30 #include <errno.h>
  31 #include <mem.h>
  32 #include <stdint.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <ipc_test.h>
  36 #include "../tester.h"
  37
  38 enum {
  39         rw_buf_size = 1024
  40 };
  41
  42 static uint8_t rw_buf[rw_buf_size];
  43
  44 const char *test_readwrite(void)
  45 {
  46         ipc_test_t *test = NULL;
  47         size_t i;
  48         errno_t rc;
  49
  50         rc = ipc_test_create(&test);
  51         if (rc != EOK)
  52                 return "Error contacting IPC test service.";
  53
  54         rc = ipc_test_set_rw_buf_size(test, rw_buf_size);
  55         if (rc != EOK)
  56                 return "Error getting read-only area size.";
  57
  58         /*
  59          * Write all zeroes to remote buffer
  60          */
  61         memset(rw_buf, 0x00, rw_buf_size);
  62         rc = ipc_test_write(test, rw_buf, rw_buf_size);
  63         if (rc != EOK)
  64                 return "Error writing remote buffer.";
  65
  66         TPRINTF("Successfully wrote zeroes to remote buffer.\n");
  67
  68         /*
  69          * Read back contents of remote buffer and verify
  70          */
  71
  72         /*
  73          * Make sure the contents of local buffer are different from what
  74          * we expect to read.
  75          */
  76         memset(rw_buf, 0xff, rw_buf_size);
  77         rc = ipc_test_read(test, rw_buf, rw_buf_size);
  78         if (rc != EOK)
  79                 return "Error reading remote buffer.";
  80
  81         TPRINTF("Successfully read back remote buffer.\n");
  82
  83         /* Now verify what we have read */
  84         for (i = 0; i < rw_buf_size; i++) {
  85                 if (rw_buf[i] != 0x00)
  86                         return "Failed verification of read data.";
  87         }
  88
  89         TPRINTF("Read data succeeded verification.\n");
  90
  91         /*
  92          * Write all binary ones to remote buffer
  93          */
  94         memset(rw_buf, 0xff, rw_buf_size);
  95         rc = ipc_test_write(test, rw_buf, rw_buf_size);
  96         if (rc != EOK)
  97                 return "Error writing remote buffer.";
  98
  99         TPRINTF("Successfully wrote binary ones to remote buffer.\n");
 100
 101         /*
 102          * Read back contents of remote buffer and verify
 103          */
 104
 105         /*
 106          * Make sure the contents of local buffer are different from what
 107          * we expect to read.
 108          */
 109         memset(rw_buf, 0x00, rw_buf_size);
 110         rc = ipc_test_read(test, rw_buf, rw_buf_size);
 111         if (rc != EOK)
 112                 return "Error reading remote buffer.";
 113
 114         TPRINTF("Successfully read back remote buffer.\n");
 115
 116         /* Now verify what we have read */
 117         for (i = 0; i < rw_buf_size; i++) {
 118                 if (rw_buf[i] != 0xff)
 119                         return "Failed verification of read data.";
 120         }
 121
 122         TPRINTF("Read data succeeded verification.\n");
 123
 124         ipc_test_destroy(test);
 125         return NULL;
 126 }