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-rw-r--r--host/usrp_e_utils/CMakeLists.txt1
-rw-r--r--host/usrp_e_utils/usrp-e-loopback.c170
-rw-r--r--host/usrp_e_utils/usrp-e-timed.c382
3 files changed, 489 insertions, 64 deletions
diff --git a/host/usrp_e_utils/CMakeLists.txt b/host/usrp_e_utils/CMakeLists.txt
index 5123af592..1ecd2ac46 100644
--- a/host/usrp_e_utils/CMakeLists.txt
+++ b/host/usrp_e_utils/CMakeLists.txt
@@ -34,6 +34,7 @@ IF(ENABLE_USRP_E_UTILS)
SET(usrp_e_utils_sources
usrp-e-utility.cpp
usrp-e-loopback.c
+ usrp-e-timed.c
usrp-e-wb-test.cpp
usrp-e-debug-pins.c
usrp-e-i2c.c
diff --git a/host/usrp_e_utils/usrp-e-loopback.c b/host/usrp_e_utils/usrp-e-loopback.c
index 454d81ba7..a63882475 100644
--- a/host/usrp_e_utils/usrp-e-loopback.c
+++ b/host/usrp_e_utils/usrp-e-loopback.c
@@ -1,14 +1,18 @@
#include <stdio.h>
+#include <string.h>
#include <sys/types.h>
+#include <sys/ioctl.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
#include <sys/mman.h>
-#include <linux/usrp_e.h>
+#include <sys/time.h>
+#include <poll.h>
+#include "linux/usrp_e.h"
-#define MAX_PACKET_SIZE 1016
+// max length #define PKT_DATA_LENGTH 1016
static int packet_data_length;
static int error;
@@ -16,34 +20,16 @@ struct pkt {
int len;
int checksum;
int seq_num;
- short data[];
+ short data[1024-6];
};
-static int length_array[2048];
-static int length_array_tail = 0;
-static int length_array_head = 0;
-
-pthread_mutex_t length_array_mutex; //gotta lock the index to keep it from getting hosed
-
-//yes this is a circular buffer that does not check empty
-//no i don't want to hear about it
-void push_length_array(int length) {
- pthread_mutex_lock(&length_array_mutex);
- if(length_array_tail > 2047) length_array_tail = 0;
- length_array[length_array_tail++] = length;
- pthread_mutex_unlock(&length_array_mutex);
-}
-
-int pop_length_array(void) {
- int retval;
- pthread_mutex_lock(&length_array_mutex);
- if(length_array_head > 2047) length_array_head = 0;
- retval = length_array[length_array_head++];
- pthread_mutex_unlock(&length_array_mutex);
- return retval;
-}
+struct ring_buffer_info (*rxi)[];
+struct ring_buffer_info (*txi)[];
+struct pkt (*rx_buf)[200];
+struct pkt (*tx_buf)[200];
static int fp;
+static struct usrp_e_ring_buffer_size_t rb_size;
static int calc_checksum(struct pkt *p)
{
@@ -53,43 +39,56 @@ static int calc_checksum(struct pkt *p)
sum = 0;
for (i=0; i < p->len; i++)
- sum ^= p->data[i];
+ sum += p->data[i];
- sum ^= p->seq_num;
- sum ^= p->len;
+ sum += p->seq_num;
+ sum += p->len;
return sum;
}
static void *read_thread(void *threadid)
{
- char *rx_data;
int cnt, prev_seq_num, pkt_count, seq_num_failure;
struct pkt *p;
unsigned long bytes_transfered, elapsed_seconds;
struct timeval start_time, finish_time;
- int expected_count;
+ int rb_read;
printf("Greetings from the reading thread!\n");
+ printf("sizeof pkt = %d\n", sizeof(struct pkt));
+
+ rb_read = 0;
bytes_transfered = 0;
gettimeofday(&start_time, NULL);
- // IMPORTANT: must assume max length packet from fpga
- rx_data = malloc(2048);
- p = (struct pkt *) ((void *)rx_data);
-
prev_seq_num = 0;
pkt_count = 0;
seq_num_failure = 0;
while (1) {
- cnt = read(fp, rx_data, 2048);
- if (cnt < 0)
- printf("Error returned from read: %d, sequence number = %d\n", cnt, p->seq_num);
+ if (!((*rxi)[rb_read].flags & RB_USER)) {
+// printf("Waiting for data\n");
+ struct pollfd pfd;
+ pfd.fd = fp;
+ pfd.events = POLLIN;
+ poll(&pfd, 1, -1);
+ }
+
+ (*rxi)[rb_read].flags = RB_USER_PROCESS;
-// printf("p->seq_num = %d\n", p->seq_num);
+// printf("pkt received, rb_read = %d\n", rb_read);
+
+ cnt = (*rxi)[rb_read].len;
+ p = &(*rx_buf)[rb_read];
+
+// cnt = read(fp, rx_data, 2048);
+// if (cnt < 0)
+// printf("Error returned from read: %d, sequence number = %d\n", cnt, p->seq_num);
+
+// printf("p = %X, p->seq_num = %d p->len = %d\n", p, p->seq_num, p->len);
pkt_count++;
@@ -97,17 +96,14 @@ static void *read_thread(void *threadid)
if (p->seq_num != prev_seq_num + 1) {
printf("Sequence number fail, current = %d, previous = %d, pkt_count = %d\n",
p->seq_num, prev_seq_num, pkt_count);
+ printf("pkt received, rb_read = %d\n", rb_read);
+ printf("p = %p, p->seq_num = %d p->len = %d\n", p, p->seq_num, p->len);
seq_num_failure ++;
if (seq_num_failure > 2)
error = 1;
}
- expected_count = pop_length_array()*2+12;
- if(cnt != expected_count) {
- printf("Received %d bytes, expected %d\n", cnt, expected_count);
- }
-
prev_seq_num = p->seq_num;
if (calc_checksum(p) != p->checksum) {
@@ -116,6 +112,12 @@ static void *read_thread(void *threadid)
error = 1;
}
+ (*rxi)[rb_read].flags = RB_KERNEL;
+
+ rb_read++;
+ if (rb_read == rb_size.num_rx_frames)
+ rb_read = 0;
+
bytes_transfered += cnt;
if (bytes_transfered > (100 * 1000000)) {
@@ -135,12 +137,12 @@ static void *read_thread(void *threadid)
// fflush(stdout);
// printf("\n");
}
-
+ return NULL;
}
static void *write_thread(void *threadid)
{
- int seq_number, i, cnt;
+ int seq_number, i, cnt, rb_write;
void *tx_data;
struct pkt *p;
@@ -154,6 +156,7 @@ static void *write_thread(void *threadid)
p->data[i] = i;
seq_number = 1;
+ rb_write = 0;
while (1) {
p->seq_num = seq_number++;
@@ -161,30 +164,46 @@ static void *write_thread(void *threadid)
if (packet_data_length > 0)
p->len = packet_data_length;
else
- p->len = (random()<<1 & 0x1ff) + (1004 - 512);
-
- push_length_array(p->len);
+ p->len = (random() & 0x1ff) + (1004 - 512);
p->checksum = calc_checksum(p);
- cnt = write(fp, tx_data, p->len * 2 + 12);
- if (cnt < 0)
- printf("Error returned from write: %d\n", cnt);
+ if (!((*txi)[rb_write].flags & RB_KERNEL)) {
+// printf("Waiting for space\n");
+ struct pollfd pfd;
+ pfd.fd = fp;
+ pfd.events = POLLOUT;
+ poll(&pfd, 1, -1);
+ }
+
+ memcpy(&(*tx_buf)[rb_write], tx_data, p->len * 2 + 12);
+
+ (*txi)[rb_write].len = p->len * 2 + 12;
+ (*txi)[rb_write].flags = RB_USER;
+
+ rb_write++;
+ if (rb_write == rb_size.num_tx_frames)
+ rb_write = 0;
+
+ cnt = write(fp, NULL, 0);
+// if (cnt < 0)
+// printf("Error returned from write: %d\n", cnt);
// sleep(1);
}
+ return NULL;
}
int main(int argc, char *argv[])
{
pthread_t tx, rx;
- pthread_mutex_init(&length_array_mutex, 0);
- long int t;
+ long int t = 0;
struct sched_param s = {
.sched_priority = 1
};
+ int ret, map_size, page_size;
void *rb;
- struct usrp_transfer_frame *tx_rb, *rx_rb;
+ struct usrp_e_ctl16 d;
if (argc < 2) {
printf("%s data_size\n", argv[0]);
@@ -192,22 +211,43 @@ int main(int argc, char *argv[])
}
packet_data_length = atoi(argv[1]);
- if(packet_data_length > MAX_PACKET_SIZE) {
- printf("Packet size must be smaller than %i\n", MAX_PACKET_SIZE);
- exit(-1);
- }
fp = open("/dev/usrp_e0", O_RDWR);
printf("fp = %d\n", fp);
- rb = mmap(0, 202 * 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fp, 0);
- if (!rb) {
- printf("mmap failed\n");
- exit;
+ d.offset = 14;
+ d.count = 1;
+ d.buf[0] = (1<<8) | (1<<9);
+ ioctl(fp, USRP_E_WRITE_CTL16, &d);
+
+ page_size = getpagesize();
+
+ ret = ioctl(fp, USRP_E_GET_RB_INFO, &rb_size);
+
+ map_size = (rb_size.num_pages_rx_flags + rb_size.num_pages_tx_flags) * page_size +
+ (rb_size.num_rx_frames + rb_size.num_tx_frames) * (page_size >> 1);
+
+ rb = mmap(0, map_size, PROT_READ|PROT_WRITE, MAP_SHARED, fp, 0);
+ if (rb == MAP_FAILED) {
+ perror("mmap failed");
+ return -1;
}
+ printf("rb = %p\n", rb);
+
+ rxi = rb;
+ rx_buf = rb + (rb_size.num_pages_rx_flags * page_size);
+ txi = rb + (rb_size.num_pages_rx_flags * page_size) +
+ (rb_size.num_rx_frames * page_size >> 1);
+ tx_buf = rb + (rb_size.num_pages_rx_flags * page_size) +
+ (rb_size.num_rx_frames * page_size >> 1) +
+ (rb_size.num_pages_tx_flags * page_size);
+
+ printf("rxi = %p, rx_buf = %p, txi = %p, tx_buf = %p\n", rxi, rx_buf, txi, tx_buf);
+
+ if ((ret = sched_setscheduler(0, SCHED_RR, &s)))
+ perror("sched_setscheduler");
- sched_setscheduler(0, SCHED_RR, &s);
error = 0;
#if 1
@@ -228,4 +268,6 @@ int main(int argc, char *argv[])
sleep(1000000000);
printf("Done sleeping\n");
+
+ return 0;
}
diff --git a/host/usrp_e_utils/usrp-e-timed.c b/host/usrp_e_utils/usrp-e-timed.c
new file mode 100644
index 000000000..06dfdf512
--- /dev/null
+++ b/host/usrp_e_utils/usrp-e-timed.c
@@ -0,0 +1,382 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <string.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stddef.h>
+#include <poll.h>
+#include <sys/mman.h>
+#include "linux/usrp_e.h"
+
+// max length #define PKT_DATA_LENGTH 1016
+static int packet_data_length;
+
+struct ring_buffer_info (*rxi)[];
+struct ring_buffer_info (*txi)[];
+__u8 *rx_buf;
+__u8 *tx_buf;
+static struct usrp_e_ring_buffer_size_t rb_size;
+
+static int fp;
+static u_int32_t crc_tab[256];
+
+// CRC code from http://www.koders.com/c/fid699AFE0A656F0022C9D6B9D1743E697B69CE5815.aspx
+// GPLv2
+
+static u_int32_t chksum_crc32_gentab(void)
+{
+ unsigned long crc, poly;
+ unsigned long i, j;
+
+ poly = 0x04C11DB7L;
+
+ for (i = 0; i < 256; i++) {
+ crc = i;
+ for (j = 8; j > 0; j--) {
+ if (crc & 1) {
+ crc = (crc >> 1) ^ poly;
+ } else {
+ crc >>= 1;
+ }
+ }
+ crc_tab[i] = crc;
+// printf("crc_tab[%d] = %X\n", i , crc);
+ }
+
+ return 0;
+}
+
+struct timeval delta_time(struct timeval f, struct timeval s)
+{
+ struct timeval d;
+
+ if (f.tv_usec > s.tv_usec) {
+ d.tv_usec = f.tv_usec - s.tv_usec;
+ d.tv_sec = f.tv_sec - s.tv_sec;
+ } else {
+ d.tv_usec = f.tv_usec - s.tv_usec + 1e6;
+ d.tv_sec = f.tv_sec - s.tv_sec - 1;
+ }
+
+ return d;
+}
+
+
+static void *read_thread(void *threadid)
+{
+ unsigned int cnt;
+ int rx_pkt_cnt, rb_read;
+ unsigned int i;
+ unsigned long crc, ck_sum;
+ unsigned int rx_crc, pkt_len, pkt_seq;
+ unsigned long bytes_transfered;
+ struct timeval start_time;
+ unsigned int prev_seq = 0;
+ int first = 1;
+ long tid;
+ __u8 *p;
+
+
+ tid = (long)threadid;
+ printf("Greetings from the reading thread(%ld)!\n", tid);
+
+ // IMPORTANT: must assume max length packet from fpga
+
+ rx_pkt_cnt = 0;
+ rb_read = 0;
+
+ bytes_transfered = 0;
+ gettimeofday(&start_time, NULL);
+
+ while (1) {
+
+ while (!((*rxi)[rb_read].flags & RB_USER)) {
+ struct pollfd pfd;
+ pfd.fd = fp;
+ pfd.events = POLLIN;
+ poll(&pfd, 1, -1);
+ }
+ (*rxi)[rb_read].flags = RB_USER_PROCESS;
+
+ rx_pkt_cnt++;
+ cnt = (*rxi)[rb_read].len;
+ p = rx_buf + (rb_read * 2048);
+
+ rx_crc = *(int *) &p[cnt-4];
+ crc = 0xFFFFFFFF;
+ ck_sum = 0;
+
+ pkt_len = *(unsigned int *) &p[0];
+ pkt_seq = *(unsigned int *) &p[4];
+
+// printf("Pkt len = %X, pkt seq = %X, driver len = %X\n", pkt_len, pkt_seq, cnt);
+
+ if (pkt_len != (cnt - 4))
+ printf("Packet length check fail, driver len = %ud, content = %ud\n",
+ cnt, pkt_len);
+
+ if (!first && (pkt_seq != (prev_seq + 1)))
+ printf("Sequence number check fail, pkt_seq = %ud, prev_seq = %ud\n",
+ pkt_seq, prev_seq);
+ first = 0;
+ prev_seq = pkt_seq;
+
+ for (i = 0; i < cnt-4; i++) {
+ ck_sum += p[i];
+
+ crc = ((crc >> 8) & 0x00FFFFFF) ^
+ crc_tab[(crc ^ p[i]) & 0xFF];
+//printf("idx = %d, data = %X, crc = %X, ck_sum = %X\n", i, p[i], crc, ck_sum);
+// crc = ((crc >> 8) & 0x00FFFFFF) ^
+// crc_tab[(crc ^ p[i+1]) & 0xFF];
+//printf("idx = %d, data = %X, crc = %X\n", i, p[i+1],crc);
+ }
+
+ (*rxi)[rb_read].flags = RB_KERNEL;
+ write(fp, NULL, 1);
+
+ if (rx_crc != ck_sum)
+ printf("Ck_sum eror, calc ck_sum = %lX, rx ck_sum = %X\n",
+ ck_sum, rx_crc);
+
+#if 0
+ if (rx_crc != (crc & 0xFFFFFFFF)) {
+ printf("CRC Error, calc crc: %X, rx_crc: %X\n",
+ (crc & 0xFFFFFFFF), rx_crc);
+ }
+#endif
+
+ rb_read++;
+ if (rb_read == rb_size.num_rx_frames)
+ rb_read = 0;
+
+ bytes_transfered += cnt;
+
+ if (bytes_transfered > (100 * 1000000)) {
+ struct timeval finish_time, d_time;
+ float elapsed_seconds;
+
+ gettimeofday(&finish_time, NULL);
+
+ printf("sec = %ld, usec = %ld\n", finish_time.tv_sec, finish_time.tv_usec);
+
+ d_time = delta_time(finish_time, start_time);
+
+ elapsed_seconds = (float)d_time.tv_sec + ((float)d_time.tv_usec * 1e-6f);
+
+ printf("Bytes transfered = %ld, elapsed seconds = %f\n", bytes_transfered, elapsed_seconds);
+ printf("RX data transfer rate = %f K Samples/second\n",
+ (float) bytes_transfered / (float) elapsed_seconds / 4000);
+
+
+ start_time = finish_time;
+ bytes_transfered = 0;
+ }
+ }
+ return NULL;
+}
+
+static void *write_thread(void *threadid)
+{
+ int i, tx_pkt_cnt, rb_write;
+ int tx_len;
+ unsigned long crc;
+ unsigned long bytes_transfered;
+ struct timeval start_time;
+ unsigned int pkt_seq = 0;
+ long tid;
+ __u8 *p;
+
+ tid = (long)threadid;
+ printf("Greetings from the write thread(%ld)!\n", tid);
+
+ rb_write = 0;
+ tx_pkt_cnt = 0;
+
+ bytes_transfered = 0;
+ gettimeofday(&start_time, NULL);
+
+ while (1) {
+
+ tx_pkt_cnt++;
+ p = tx_buf + (rb_write * 2048);
+
+// printf("p = %p\n", p);
+
+ if (packet_data_length > 0)
+ tx_len = packet_data_length;
+ else
+ tx_len = (random() & 0x1ff) + (2044 - 512);
+
+#if 0
+ if (tx_pkt_cnt == 512) {
+ printf(".");
+ fflush(stdout);
+ }
+ if (tx_pkt_cnt == 1024) {
+ printf("'");
+ fflush(stdout);
+ }
+ if (tx_pkt_cnt == 1536) {
+ printf(":");
+ fflush(stdout);
+ tx_pkt_cnt = 0;
+ }
+#endif
+
+// printf("Checking for space at rb entry = %d\n", rb_write);
+ while (!((*txi)[rb_write].flags & RB_KERNEL)) {
+ struct pollfd pfd;
+ pfd.fd = fp;
+ pfd.events = POLLOUT;
+ poll(&pfd, 1, -1);
+ }
+// printf("Got space\n");
+
+ for (i=8; i < tx_len-4; i++) {
+ p[i] = i & 0xFF;
+ }
+
+ *(unsigned int *) &p[0] = tx_len-4;
+ *(unsigned int *) &p[4] = pkt_seq;
+
+ pkt_seq++;
+
+ crc = 0xFFFFFFFF;
+ for (i = 0; i < tx_len-4; i++) {
+// printf("%X ", p[i]);
+ crc = ((crc >> 8) & 0x00FFFFFF) ^
+ crc_tab[(crc ^ p[i]) & 0xFF];
+
+ }
+ *(unsigned int *) &p[tx_len-4] = crc;
+// printf("\n crc = %lX\n", crc);
+
+ (*txi)[rb_write].len = tx_len;
+ (*txi)[rb_write].flags = RB_USER;
+
+ rb_write++;
+ if (rb_write == rb_size.num_tx_frames)
+ rb_write = 0;
+
+ bytes_transfered += tx_len;
+
+ if (bytes_transfered > (100 * 1000000)) {
+ struct timeval finish_time, d_time;
+ float elapsed_seconds;
+
+ gettimeofday(&finish_time, NULL);
+
+ d_time = delta_time(finish_time, start_time);
+
+ elapsed_seconds = (float)d_time.tv_sec - ((float)d_time.tv_usec * 1e-6f);
+
+ printf("Bytes transfered = %ld, elapsed seconds = %f\n", bytes_transfered, elapsed_seconds);
+ printf("TX data transfer rate = %f K Samples/second\n",
+ (float) bytes_transfered / (float) elapsed_seconds / 4000);
+
+
+ start_time = finish_time;
+ bytes_transfered = 0;
+ }
+
+// sleep(1);
+ }
+ return NULL;
+}
+
+
+int main(int argc, char *argv[])
+{
+ pthread_t tx, rx;
+ long int t=0;
+ int fpga_config_flag ,decimation;
+ int ret, map_size, page_size;
+ void *rb;
+
+ struct usrp_e_ctl16 d;
+ struct sched_param s = {
+ .sched_priority = 1
+ };
+
+ if (argc < 4) {
+ printf("%s r|w|rw decimation data_size\n", argv[0]);
+ return -1;
+ }
+
+ chksum_crc32_gentab();
+
+ decimation = atoi(argv[2]);
+ packet_data_length = atoi(argv[3]);
+
+ fp = open("/dev/usrp_e0", O_RDWR);
+ printf("fp = %d\n", fp);
+
+ page_size = getpagesize();
+
+ ret = ioctl(fp, USRP_E_GET_RB_INFO, &rb_size);
+
+ map_size = (rb_size.num_pages_rx_flags + rb_size.num_pages_tx_flags) * page_size +
+ (rb_size.num_rx_frames + rb_size.num_tx_frames) * (page_size >> 1);
+
+ rb = mmap(0, map_size, PROT_READ|PROT_WRITE, MAP_SHARED, fp, 0);
+ if (rb == MAP_FAILED) {
+ perror("mmap failed");
+ return -1;
+ }
+
+ printf("rb = %p\n", rb);
+
+ rxi = rb;
+ rx_buf = rb + (rb_size.num_pages_rx_flags * page_size);
+ txi = rb + (rb_size.num_pages_rx_flags * page_size) +
+ (rb_size.num_rx_frames * page_size >> 1);
+ tx_buf = rb + (rb_size.num_pages_rx_flags * page_size) +
+ (rb_size.num_rx_frames * page_size >> 1) +
+ (rb_size.num_pages_tx_flags * page_size);
+
+ fpga_config_flag = (1<<8);
+ if (strcmp(argv[1], "w") == 0)
+ fpga_config_flag |= (1 << 11);
+ else if (strcmp(argv[1], "r") == 0)
+ fpga_config_flag |= (1 << 10);
+ else if (strcmp(argv[1], "rw") == 0)
+ fpga_config_flag |= ((1 << 10) | (1 << 11));
+
+ fpga_config_flag |= decimation;
+
+ d.offset = 14;
+ d.count = 1;
+ d.buf[0] = fpga_config_flag;
+ ioctl(fp, USRP_E_WRITE_CTL16, &d);
+
+ sleep(1); // in case the kernel threads need time to start. FIXME if so
+
+ sched_setscheduler(0, SCHED_RR, &s);
+
+ if (fpga_config_flag & (1 << 10)) {
+ if (pthread_create(&rx, NULL, read_thread, (void *) t)) {
+ printf("Failed to create rx thread\n");
+ exit(-1);
+ }
+ }
+
+ sleep(1);
+
+ if (fpga_config_flag & (1 << 11)) {
+ if (pthread_create(&tx, NULL, write_thread, (void *) t)) {
+ printf("Failed to create tx thread\n");
+ exit(-1);
+ }
+ }
+
+ sleep(10000);
+
+ printf("Done sleeping\n");
+
+ return 0;
+}
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