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-rw-r--r--tests/i460_mux/i460_mux_test.c397
1 files changed, 397 insertions, 0 deletions
diff --git a/tests/i460_mux/i460_mux_test.c b/tests/i460_mux/i460_mux_test.c
new file mode 100644
index 00000000..53144fde
--- /dev/null
+++ b/tests/i460_mux/i460_mux_test.c
@@ -0,0 +1,397 @@
+
+#include <osmocom/core/utils.h>
+
+#include <osmocom/gsm/i460_mux.h>
+
+static void bits_cb(void *user_data, const ubit_t *bits, unsigned int num_bits)
+{
+ char *str = user_data;
+ printf("demux_bits_cb '%s': %s\n", str, osmo_ubit_dump(bits, num_bits));
+}
+
+
+const struct osmo_i460_schan_desc scd64 = {
+ .rate = OSMO_I460_RATE_64k,
+ .bit_offset = 0,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "64k",
+ },
+};
+
+const struct osmo_i460_schan_desc scd32_0 = {
+ .rate = OSMO_I460_RATE_32k,
+ .bit_offset = 0,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "32k_0",
+ },
+};
+const struct osmo_i460_schan_desc scd32_4 = {
+ .rate = OSMO_I460_RATE_32k,
+ .bit_offset = 4,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "32k_4",
+ },
+};
+
+const struct osmo_i460_schan_desc scd16_0 = {
+ .rate = OSMO_I460_RATE_16k,
+ .bit_offset = 0,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "16k_0",
+ },
+};
+const struct osmo_i460_schan_desc scd16_2 = {
+ .rate = OSMO_I460_RATE_16k,
+ .bit_offset = 2,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "16k_2",
+ },
+};
+const struct osmo_i460_schan_desc scd16_4 = {
+ .rate = OSMO_I460_RATE_16k,
+ .bit_offset = 4,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "16k_4",
+ },
+};
+const struct osmo_i460_schan_desc scd16_6 = {
+ .rate = OSMO_I460_RATE_16k,
+ .bit_offset = 6,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "16k_6",
+ },
+};
+
+const struct osmo_i460_schan_desc scd8_0 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 0,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_0",
+ },
+};
+const struct osmo_i460_schan_desc scd8_1 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 1,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_1",
+ },
+};
+const struct osmo_i460_schan_desc scd8_2 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 2,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_2",
+ },
+};
+const struct osmo_i460_schan_desc scd8_3 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 3,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_3",
+ },
+};
+const struct osmo_i460_schan_desc scd8_4 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 4,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_4",
+ },
+};
+const struct osmo_i460_schan_desc scd8_5 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 5,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_5",
+ },
+};
+const struct osmo_i460_schan_desc scd8_6 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 6,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_6",
+ },
+};
+const struct osmo_i460_schan_desc scd8_7 = {
+ .rate = OSMO_I460_RATE_8k,
+ .bit_offset = 7,
+ .demux = {
+ .num_bits = 40,
+ .out_cb_bits = bits_cb,
+ .out_cb_bytes = NULL,
+ .user_data = "8k_7",
+ },
+};
+
+static void test_no_subchan(void)
+{
+ struct osmo_i460_timeslot _ts, *ts = &_ts;
+
+ /* Initialization */
+ printf("\n==> %s\n", __func__);
+ osmo_i460_ts_init(ts);
+
+ /* feed in some data; expect nothing to happen */
+ const uint8_t nothing[128] = { 0, };
+ osmo_i460_demux_in(ts, nothing, sizeof(nothing));
+
+ /* pull bytes out of mux (should be all 0xff) */
+ uint8_t buf[128];
+ osmo_i460_mux_out(ts, buf, sizeof(buf));
+ printf("out: %s\n", osmo_hexdump(buf, sizeof(buf)));
+}
+
+static struct msgb *gen_alternating_bitmsg(unsigned int num_bits)
+{
+ struct msgb *msg = msgb_alloc(num_bits, "mux-in");
+ int i;
+ for (i = 0; i < num_bits; i++)
+ msgb_put_u8(msg, i & 1);
+ return msg;
+}
+
+static void test_64k_subchan(void)
+{
+ struct osmo_i460_timeslot _ts, *ts = &_ts;
+
+ /* Initialization */
+ printf("\n==> %s\n", __func__);
+ osmo_i460_ts_init(ts);
+ osmo_i460_subchan_add(NULL, ts, &scd64);
+
+ /* demux */
+ uint8_t sequence[128];
+ int i;
+ for (i = 0; i < sizeof(sequence); i++)
+ sequence[i] = i;
+ osmo_i460_demux_in(ts, sequence, sizeof(sequence));
+
+ /* mux */
+ struct msgb *msg = gen_alternating_bitmsg(128);
+ osmo_i460_mux_enqueue(&ts->schan[0], msg);
+
+ uint8_t buf[16];
+ osmo_i460_mux_out(ts, buf, sizeof(buf));
+ printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
+
+ osmo_i460_subchan_del(&ts->schan[0]);
+}
+
+static void test_32k_subchan(void)
+{
+ struct osmo_i460_timeslot _ts, *ts = &_ts;
+
+ /* Initialization */
+ printf("\n==> %s\n", __func__);
+ osmo_i460_ts_init(ts);
+ osmo_i460_subchan_add(NULL, ts, &scd32_0);
+ osmo_i460_subchan_add(NULL, ts, &scd32_4);
+
+ /* demux */
+ uint8_t sequence[10];
+ int i;
+ for (i = 0; i < sizeof(sequence); i++)
+ sequence[i] = 0;
+ sequence[0] = 0x0f;
+ sequence[1] = 0xf0;
+ sequence[2] = 0xff;
+ osmo_i460_demux_in(ts, sequence, sizeof(sequence));
+
+ /* mux */
+
+ /* test with only a single channel active */
+ for (i = 0; i < 2; i++) {
+ struct msgb *msg = gen_alternating_bitmsg(128);
+ osmo_i460_mux_enqueue(&ts->schan[i], msg);
+ printf("%s-single-%u\n", __func__, i);
+
+ uint8_t buf[16];
+ int j;
+ for (j = 0; j < 3; j++) {
+ osmo_i460_mux_out(ts, buf, sizeof(buf));
+ printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
+ }
+ }
+
+ for (i = 0; i < 4; i++)
+ osmo_i460_subchan_del(&ts->schan[i]);
+}
+
+
+
+static void test_16k_subchan(void)
+{
+ struct osmo_i460_timeslot _ts, *ts = &_ts;
+
+ /* Initialization */
+ printf("\n==> %s\n", __func__);
+ osmo_i460_ts_init(ts);
+ osmo_i460_subchan_add(NULL, ts, &scd16_0);
+ osmo_i460_subchan_add(NULL, ts, &scd16_2);
+ osmo_i460_subchan_add(NULL, ts, &scd16_4);
+ osmo_i460_subchan_add(NULL, ts, &scd16_6);
+
+ /* demux */
+ uint8_t sequence[20];
+ int i;
+ for (i = 0; i < sizeof(sequence); i++)
+ sequence[i] = 0;
+ sequence[0] = 0x03;
+ sequence[1] = 0x0c;
+ sequence[2] = 0x30;
+ sequence[3] = 0xc0;
+ sequence[4] = 0xff;
+ osmo_i460_demux_in(ts, sequence, sizeof(sequence));
+
+ /* mux */
+
+ /* test with only a single channel active */
+ for (i = 0; i < 4; i++) {
+ struct msgb *msg = gen_alternating_bitmsg(128);
+ osmo_i460_mux_enqueue(&ts->schan[i], msg);
+ printf("%s-single-%u\n", __func__, i);
+
+ uint8_t buf[16];
+ int j;
+ for (j = 0; j < 5; j++) {
+ osmo_i460_mux_out(ts, buf, sizeof(buf));
+ printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
+ }
+ }
+
+ for (i = 0; i < 4; i++)
+ osmo_i460_subchan_del(&ts->schan[i]);
+}
+
+
+static void test_8k_subchan(void)
+{
+ struct osmo_i460_timeslot _ts, *ts = &_ts;
+
+ /* Initialization */
+ printf("\n==> %s\n", __func__);
+ osmo_i460_ts_init(ts);
+ osmo_i460_subchan_add(NULL, ts, &scd8_0);
+ osmo_i460_subchan_add(NULL, ts, &scd8_1);
+ osmo_i460_subchan_add(NULL, ts, &scd8_2);
+ osmo_i460_subchan_add(NULL, ts, &scd8_3);
+ osmo_i460_subchan_add(NULL, ts, &scd8_4);
+ osmo_i460_subchan_add(NULL, ts, &scd8_5);
+ osmo_i460_subchan_add(NULL, ts, &scd8_6);
+ osmo_i460_subchan_add(NULL, ts, &scd8_7);
+
+ /* demux */
+ uint8_t sequence[40];
+ int i;
+ for (i = 0; i < sizeof(sequence); i++)
+ sequence[i] = 0;
+ i = 0;
+ sequence[i++] = 0x01;
+ sequence[i++] = 0x02;
+ sequence[i++] = 0x04;
+ sequence[i++] = 0x08;
+ sequence[i++] = 0x0f;
+ sequence[i++] = 0x10;
+ sequence[i++] = 0x20;
+ sequence[i++] = 0x40;
+ sequence[i++] = 0x80;
+ sequence[i++] = 0xf0;
+ sequence[i++] = 0xff;
+ osmo_i460_demux_in(ts, sequence, sizeof(sequence));
+
+ /* mux */
+
+ /* test with only a single channel active */
+ for (i = 0; i < 8; i++) {
+ struct msgb *msg = gen_alternating_bitmsg(64);
+ osmo_i460_mux_enqueue(&ts->schan[i], msg);
+ printf("%s-single-%u\n", __func__, i);
+
+ uint8_t buf[16];
+ int j;
+ for (j = 0; j < 5; j++) {
+ osmo_i460_mux_out(ts, buf, sizeof(buf));
+ printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
+ }
+ }
+
+ for (i = 0; i < 8; i++)
+ osmo_i460_subchan_del(&ts->schan[i]);
+}
+
+/* activate only one sub-channel; expect unused bits to be '1' */
+static void test_unused_subchan(void)
+{
+ struct osmo_i460_timeslot _ts, *ts = &_ts;
+
+ /* Initialization */
+ printf("\n==> %s\n", __func__);
+ osmo_i460_ts_init(ts);
+ osmo_i460_subchan_add(NULL, ts, &scd16_0);
+
+ /* mux */
+ struct msgb *msg = gen_alternating_bitmsg(128);
+ memset(msgb_data(msg), 0, msgb_length(msg));
+ osmo_i460_mux_enqueue(&ts->schan[0], msg);
+ printf("%s-single\n", __func__);
+
+ uint8_t buf[16];
+ int j;
+ for (j = 0; j < 5; j++) {
+ osmo_i460_mux_out(ts, buf, sizeof(buf));
+ printf("mux_out: %s\n", osmo_hexdump(buf, sizeof(buf)));
+ }
+
+ osmo_i460_subchan_del(&ts->schan[0]);
+}
+
+int main(int argc, char **argv)
+{
+ test_no_subchan();
+ test_64k_subchan();
+ test_32k_subchan();
+ test_16k_subchan();
+ test_8k_subchan();
+ test_unused_subchan();
+}