source: rtems/testsuites/libtests/block13/init.c @ 71092f7

4.115
Last change on this file since 71092f7 was 71092f7, checked in by Sebastian Huber <sebastian.huber@…>, on 07/02/12 at 14:58:01

libblock: Fix read-ahead trigger and next update

The previous version was sub-optimal for read-ahead transfer counts of
one.

  • Property mode set to 100644
File size: 5.3 KB
Line 
1/*
2 * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
3 *
4 *  embedded brains GmbH
5 *  Obere Lagerstr. 30
6 *  82178 Puchheim
7 *  Germany
8 *  <rtems@embedded-brains.de>
9 *
10 * The license and distribution terms for this file may be
11 * found in the file LICENSE in this distribution or at
12 * http://www.rtems.com/license/LICENSE.
13 */
14
15#ifdef HAVE_CONFIG_H
16  #include "config.h"
17#endif
18
19#include "tmacros.h"
20
21#include <errno.h>
22#include <string.h>
23
24#include <rtems/blkdev.h>
25#include <rtems/bdbuf.h>
26
27#define BLOCK_COUNT 11
28#define READ_COUNT 23
29
30static int block_access_counts [BLOCK_COUNT];
31
32#define RESET_CACHE (-1)
33
34static const int action_sequence [READ_COUNT] = {
35  0, 2, 3, 4, 5, 6, 7, 8, 9, 10,
36  RESET_CACHE,
37  10,
38  RESET_CACHE,
39  9,
40  RESET_CACHE,
41  8,
42  RESET_CACHE,
43  7, 8,
44  RESET_CACHE,
45  6, 7, 9
46};
47
48#define UNUSED_LINE { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
49
50static const int expected_block_access_counts [READ_COUNT] [BLOCK_COUNT] = {
51   { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
52   { 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
53   { 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0 },
54   { 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0 },
55   { 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
56   { 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
57   { 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
58   { 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
59   { 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
60   { 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
61   UNUSED_LINE,
62   { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
63   UNUSED_LINE,
64   { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 },
65   UNUSED_LINE,
66   { 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 },
67   UNUSED_LINE,
68   { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 },
69   { 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1 },
70   UNUSED_LINE,
71   { 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0 },
72   { 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1 },
73   { 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1 }
74};
75
76#define NO_TRIGGER RTEMS_DISK_READ_AHEAD_NO_TRIGGER
77
78#define TRIGGER_AFTER_RESET RTEMS_DISK_READ_AHEAD_NO_TRIGGER
79
80static const rtems_blkdev_bnum trigger [READ_COUNT] = {
81  1, 3, 5, 5, 8, 8, 8, NO_TRIGGER, NO_TRIGGER, NO_TRIGGER,
82  TRIGGER_AFTER_RESET,
83  11,
84  TRIGGER_AFTER_RESET,
85  10,
86  TRIGGER_AFTER_RESET,
87  9,
88  TRIGGER_AFTER_RESET,
89  8, NO_TRIGGER,
90  TRIGGER_AFTER_RESET,
91  7, 9, NO_TRIGGER
92};
93
94#define NOT_CHANGED_BY_RESET(i) (i)
95
96static const rtems_blkdev_bnum next [READ_COUNT] = {
97  2, 4, 7, 7, 10, 10, 10, 10, 10, 10,
98  NOT_CHANGED_BY_RESET(10),
99  12,
100  NOT_CHANGED_BY_RESET(12),
101  11,
102  NOT_CHANGED_BY_RESET(11),
103  10,
104  NOT_CHANGED_BY_RESET(10),
105  9, 9,
106  NOT_CHANGED_BY_RESET(9),
107  8, 11, 11
108};
109
110static int test_disk_ioctl(rtems_disk_device *dd, uint32_t req, void *arg)
111{
112  int rv = 0;
113
114  if (req == RTEMS_BLKIO_REQUEST) {
115    rtems_blkdev_request *breq = arg;
116    rtems_blkdev_sg_buffer *sg = breq->bufs;
117    uint32_t i;
118
119    rtems_test_assert(breq->req == RTEMS_BLKDEV_REQ_READ);
120
121    for (i = 0; i < breq->bufnum; ++i) {
122      rtems_blkdev_bnum block = sg [i].block;
123
124      rtems_test_assert(block < BLOCK_COUNT);
125
126      ++block_access_counts [block];
127    }
128
129    (*breq->req_done)(breq->done_arg, RTEMS_SUCCESSFUL);
130  } else {
131    errno = EINVAL;
132    rv = -1;
133  }
134
135  return rv;
136}
137
138static void test_read_ahead(rtems_disk_device *dd)
139{
140  int i;
141
142  for (i = 0; i < READ_COUNT; ++i) {
143    int action = action_sequence [i];
144
145    if (action != RESET_CACHE) {
146      rtems_blkdev_bnum block = (rtems_blkdev_bnum) action;
147      rtems_status_code sc;
148      rtems_bdbuf_buffer *bd;
149
150      printf("%i ", action);
151
152      sc = rtems_bdbuf_read(dd, block, &bd);
153      rtems_test_assert(sc == RTEMS_SUCCESSFUL);
154
155      sc = rtems_bdbuf_release(bd);
156      rtems_test_assert(sc == RTEMS_SUCCESSFUL);
157
158      rtems_test_assert(
159        memcmp(
160          block_access_counts,
161          expected_block_access_counts [i],
162          sizeof(block_access_counts)
163        ) == 0
164      );
165    } else {
166      printf("\nreset\n");
167
168      rtems_bdbuf_purge_dev(dd);
169      memset(&block_access_counts, 0, sizeof(block_access_counts));
170    }
171
172    rtems_test_assert(trigger [i] == dd->read_ahead.trigger);
173    rtems_test_assert(next [i] == dd->read_ahead.next);
174  }
175
176  printf("\n");
177}
178
179static void test(void)
180{
181  rtems_status_code sc;
182  dev_t dev = 0;
183  rtems_disk_device *dd;
184
185  sc = rtems_disk_io_initialize();
186  rtems_test_assert(sc == RTEMS_SUCCESSFUL);
187
188  sc = rtems_disk_create_phys(
189    dev,
190    1,
191    BLOCK_COUNT,
192    test_disk_ioctl,
193    NULL,
194    NULL
195  );
196  rtems_test_assert(sc == RTEMS_SUCCESSFUL);
197
198  dd = rtems_disk_obtain(dev);
199  rtems_test_assert(dd != NULL);
200
201  test_read_ahead(dd);
202
203  sc = rtems_disk_release(dd);
204  rtems_test_assert(sc == RTEMS_SUCCESSFUL);
205
206  sc = rtems_disk_delete(dev);
207  rtems_test_assert(sc == RTEMS_SUCCESSFUL);
208}
209
210static void Init(rtems_task_argument arg)
211{
212  puts("\n\n*** TEST BLOCK 13 ***");
213
214  test();
215
216  puts("*** END OF TEST BLOCK 13 ***");
217
218  rtems_test_exit(0);
219}
220
221#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
222#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
223#define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK
224
225#define CONFIGURE_BDBUF_BUFFER_MIN_SIZE 1
226#define CONFIGURE_BDBUF_BUFFER_MAX_SIZE 1
227#define CONFIGURE_BDBUF_CACHE_MEMORY_SIZE BLOCK_COUNT
228#define CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS 3
229#define CONFIGURE_BDBUF_READ_AHEAD_TASK_PRIORITY 1
230
231#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
232
233#define CONFIGURE_MAXIMUM_TASKS 1
234
235#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
236
237#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES
238#define CONFIGURE_INIT_TASK_PRIORITY 2
239
240#define CONFIGURE_INIT
241
242#include <rtems/confdefs.h>
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