test: blkmap: Add test suite
Verify that:
- Block maps can be created and destroyed
- Mappings aren't allowed to overlap
- Multiple mappings can be attached and be read/written from/to
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/blkmap.c b/test/dm/blkmap.c
new file mode 100644
index 0000000..7a163d6
--- /dev/null
+++ b/test/dm/blkmap.c
@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2023 Addiva Elektronik
+ * Author: Tobias Waldekranz <tobias@waldekranz.com>
+ */
+
+#include <common.h>
+#include <blk.h>
+#include <blkmap.h>
+#include <dm.h>
+#include <asm/test.h>
+#include <dm/test.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+#define BLKSZ 0x200
+
+struct mapping {
+ int src;
+ int cnt;
+ int dst;
+};
+
+const struct mapping unordered_mapping[] = {
+ { 0, 1, 3 },
+ { 1, 3, 0 },
+ { 4, 2, 6 },
+ { 6, 2, 4 },
+
+ { 0, 0, 0 }
+};
+
+const struct mapping identity_mapping[] = {
+ { 0, 8, 0 },
+
+ { 0, 0, 0 }
+};
+
+static char identity[8 * BLKSZ];
+static char unordered[8 * BLKSZ];
+static char buffer[8 * BLKSZ];
+
+static void mkblob(void *base, const struct mapping *m)
+{
+ int nr;
+
+ for (; m->cnt; m++) {
+ for (nr = 0; nr < m->cnt; nr++) {
+ memset(base + (m->dst + nr) * BLKSZ,
+ m->src + nr, BLKSZ);
+ }
+ }
+}
+
+static int dm_test_blkmap_read(struct unit_test_state *uts)
+{
+ struct udevice *dev, *blk;
+ const struct mapping *m;
+
+ ut_assertok(blkmap_create("rdtest", &dev));
+ ut_assertok(blk_get_from_parent(dev, &blk));
+
+ /* Generate an ordered and an unordered pattern in memory */
+ mkblob(unordered, unordered_mapping);
+ mkblob(identity, identity_mapping);
+
+ /* Create a blkmap that cancels out the disorder */
+ for (m = unordered_mapping; m->cnt; m++) {
+ ut_assertok(blkmap_map_mem(dev, m->src, m->cnt,
+ unordered + m->dst * BLKSZ));
+ }
+
+ /* Read out the data via the blkmap device to another area,
+ * and verify that it matches the ordered pattern.
+ */
+ ut_asserteq(8, blk_read(blk, 0, 8, buffer));
+ ut_assertok(memcmp(buffer, identity, sizeof(buffer)));
+
+ ut_assertok(blkmap_destroy(dev));
+ return 0;
+}
+DM_TEST(dm_test_blkmap_read, 0);
+
+static int dm_test_blkmap_write(struct unit_test_state *uts)
+{
+ struct udevice *dev, *blk;
+ const struct mapping *m;
+
+ ut_assertok(blkmap_create("wrtest", &dev));
+ ut_assertok(blk_get_from_parent(dev, &blk));
+
+ /* Generate an ordered and an unordered pattern in memory */
+ mkblob(unordered, unordered_mapping);
+ mkblob(identity, identity_mapping);
+
+ /* Create a blkmap that mimics the disorder */
+ for (m = unordered_mapping; m->cnt; m++) {
+ ut_assertok(blkmap_map_mem(dev, m->src, m->cnt,
+ buffer + m->dst * BLKSZ));
+ }
+
+ /* Write the ordered data via the blkmap device to another
+ * area, and verify that the result matches the unordered
+ * pattern.
+ */
+ ut_asserteq(8, blk_write(blk, 0, 8, identity));
+ ut_assertok(memcmp(buffer, unordered, sizeof(buffer)));
+
+ ut_assertok(blkmap_destroy(dev));
+ return 0;
+}
+DM_TEST(dm_test_blkmap_write, 0);
+
+static int dm_test_blkmap_slicing(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+
+ ut_assertok(blkmap_create("slicetest", &dev));
+
+ ut_assertok(blkmap_map_mem(dev, 8, 8, NULL));
+
+ /* Can't overlap on the low end */
+ ut_asserteq(-EBUSY, blkmap_map_mem(dev, 4, 5, NULL));
+ /* Can't be inside */
+ ut_asserteq(-EBUSY, blkmap_map_mem(dev, 10, 2, NULL));
+ /* Can't overlap on the high end */
+ ut_asserteq(-EBUSY, blkmap_map_mem(dev, 15, 4, NULL));
+
+ /* But we should be able to add slices right before and
+ * after
+ */
+ ut_assertok(blkmap_map_mem(dev, 4, 4, NULL));
+ ut_assertok(blkmap_map_mem(dev, 16, 4, NULL));
+
+ ut_assertok(blkmap_destroy(dev));
+ return 0;
+}
+DM_TEST(dm_test_blkmap_slicing, 0);
+
+static int dm_test_blkmap_creation(struct unit_test_state *uts)
+{
+ struct udevice *first, *second;
+
+ ut_assertok(blkmap_create("first", &first));
+
+ /* Can't have two "first"s */
+ ut_asserteq(-EBUSY, blkmap_create("first", &second));
+
+ /* But "second" should be fine */
+ ut_assertok(blkmap_create("second", &second));
+
+ /* Once "first" is destroyed, we should be able to create it
+ * again
+ */
+ ut_assertok(blkmap_destroy(first));
+ ut_assertok(blkmap_create("first", &first));
+
+ ut_assertok(blkmap_destroy(first));
+ ut_assertok(blkmap_destroy(second));
+ return 0;
+}
+DM_TEST(dm_test_blkmap_creation, 0);
+
+static int dm_test_cmd_blkmap(struct unit_test_state *uts)
+{
+ ulong loadaddr = env_get_hex("loadaddr", 0);
+ struct udevice *dev;
+
+ console_record_reset();
+
+ ut_assertok(run_command("blkmap info", 0));
+ ut_assert_console_end();
+
+ ut_assertok(run_command("blkmap create ramdisk", 0));
+ ut_assert_nextline("Created \"ramdisk\"");
+ ut_assert_console_end();
+
+ ut_assertnonnull((dev = blkmap_from_label("ramdisk")));
+
+ ut_assertok(run_commandf("blkmap map ramdisk 0 800 mem 0x%lx", loadaddr));
+ ut_assert_nextline("Block 0x0+0x800 mapped to 0x%lx", loadaddr);
+ ut_assert_console_end();
+
+ ut_assertok(run_command("blkmap info", 0));
+ ut_assert_nextline("Device 0: Vendor: U-Boot Rev: 1.0 Prod: blkmap");
+ ut_assert_nextline(" Type: Hard Disk");
+ ut_assert_nextline(" Capacity: 1.0 MB = 0.0 GB (2048 x 512)");
+ ut_assert_console_end();
+
+ ut_assertok(run_command("blkmap get ramdisk dev devnum", 0));
+ ut_asserteq(dev_seq(dev), env_get_hex("devnum", 0xdeadbeef));
+
+ ut_assertok(run_command("blkmap destroy ramdisk", 0));
+ ut_assert_nextline("Destroyed \"ramdisk\"");
+ ut_assert_console_end();
+
+ ut_assertok(run_command("blkmap info", 0));
+ ut_assert_console_end();
+ return 0;
+}
+DM_TEST(dm_test_cmd_blkmap, 0);