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-rw-r--r--host/apps/omap_debug/usrp-e-crc-rw.c143
-rw-r--r--host/apps/omap_debug/usrp-e-mm-loopback.c2
-rw-r--r--host/apps/omap_debug/usrp_e.h11
3 files changed, 96 insertions, 60 deletions
diff --git a/host/apps/omap_debug/usrp-e-crc-rw.c b/host/apps/omap_debug/usrp-e-crc-rw.c
index c3ae45cc1..9e3e7eb5d 100644
--- a/host/apps/omap_debug/usrp-e-crc-rw.c
+++ b/host/apps/omap_debug/usrp-e-crc-rw.c
@@ -8,11 +8,19 @@
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
+#include <poll.h>
+#include <sys/mman.h>
#include "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];
@@ -44,8 +52,7 @@ static u_int32_t chksum_crc32_gentab(void)
static void *read_thread(void *threadid)
{
int cnt;
- struct usrp_transfer_frame *rx_data;
- int rx_pkt_cnt;
+ int rx_pkt_cnt, rb_read;
int i;
unsigned long crc;
unsigned int rx_crc;
@@ -53,70 +60,54 @@ static void *read_thread(void *threadid)
struct timeval start_time, finish_time;
__u8 *p;
- __u32 *pi;
printf("Greetings from the reading thread!\n");
// IMPORTANT: must assume max length packet from fpga
- rx_data = malloc(2048);
-
+
rx_pkt_cnt = 0;
+ rb_read = 0;
bytes_transfered = 0;
gettimeofday(&start_time, NULL);
while (1) {
- cnt = read(fp, rx_data, 2048);
- if (cnt < 0)
- printf("Error returned from read: %d\n", cnt);
-
- rx_pkt_cnt++;
-
-#if 0
- if (rx_pkt_cnt == 512) {
- printf(".");
- fflush(stdout);
- rx_pkt_cnt = 0;
+ while (!((*rxi)[rb_read].flags & RB_USER)) {
+ struct pollfd pfd;
+ pfd.fd = fp;
+ pfd.events = POLLIN;
+ ssize_t ret = poll(&pfd, 1, -1);
}
-#endif
+ (*rxi)[rb_read].flags = RB_USER_PROCESS;
- if (rx_data->status & RB_OVERRUN)
- printf("O");
-
- printf("rx_data->len = %d\n", rx_data->len);
+ rx_pkt_cnt++;
+ cnt = (*rxi)[rb_read].len;
+ p = rx_buf + (rb_read * 2048);
-
+ rx_crc = *(int *) &p[cnt-4];
crc = 0xFFFFFFFF;
- for (i = 0; i < rx_data->len - 4; i+=2) {
+ for (i = 0; i < cnt - 4; i+=2) {
crc = ((crc >> 8) & 0x00FFFFFF) ^
- crc_tab[(crc ^ rx_data->buf[i+1]) & 0xFF];
-printf("idx = %d, data = %X, crc = %X\n", i, rx_data->buf[i+1],crc);
+ crc_tab[(crc ^ p[i+1]) & 0xFF];
+//printf("idx = %d, data = %X, crc = %X\n", i, p[i+1],crc);
crc = ((crc >> 8) & 0x00FFFFFF) ^
- crc_tab[(crc ^ rx_data->buf[i]) & 0xFF];
-printf("idx = %d, data = %X, crc = %X\n", i, rx_data->buf[i],crc);
+ crc_tab[(crc ^ p[i]) & 0xFF];
+//printf("idx = %d, data = %X, crc = %X\n", i, p[i],crc);
}
- p = &rx_data->buf[rx_data->len - 4];
- pi = (__u32 *) p;
- rx_crc = *pi;
-
-#if 1
- printf("rx_data->len = %d\n", rx_data->len);
- printf("rx_data->status = %d\n", rx_data->status);
- for (i = 0; i < rx_data->len; i++)
- printf("idx = %d, data = %X\n", i, rx_data->buf[i]);
- printf("calc crc = %lX, rx crc = %X\n", crc, rx_crc);
- fflush(stdout);
- break;
-#endif
+ (*rxi)[rb_read].flags = RB_KERNEL;
if (rx_crc != (crc & 0xFFFFFFFF)) {
printf("CRC Error, calc crc: %X, rx_crc: %X\n",
(crc & 0xFFFFFFFF), rx_crc);
}
- bytes_transfered += rx_data->len;
+ rb_read++;
+ if (rb_read == rb_size.num_rx_frames)
+ rb_read = 0;
+
+ bytes_transfered += cnt;
if (bytes_transfered > (100 * 1000000)) {
gettimeofday(&finish_time, NULL);
@@ -135,17 +126,17 @@ printf("idx = %d, data = %X, crc = %X\n", i, rx_data->buf[i],crc);
static void *write_thread(void *threadid)
{
- int seq_number, i, cnt, tx_pkt_cnt;
+ int i, tx_pkt_cnt, rb_write;
int tx_len;
unsigned long crc;
- struct usrp_transfer_frame *tx_data;
unsigned long bytes_transfered, elapsed_seconds;
struct timeval start_time, finish_time;
+ __u8 *p;
printf("Greetings from the write thread!\n");
+ rb_write = 0;
tx_pkt_cnt = 0;
- tx_data = malloc(2048);
bytes_transfered = 0;
gettimeofday(&start_time, NULL);
@@ -153,6 +144,14 @@ static void *write_thread(void *threadid)
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) {
@@ -170,25 +169,33 @@ static void *write_thread(void *threadid)
}
#endif
- tx_len = 2048 - sizeof(struct usrp_transfer_frame) - sizeof(int);
- tx_data->len = tx_len + sizeof(int);
+// 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;
+ ssize_t ret = poll(&pfd, 1, -1);
+ }
+// printf("Got space\n");
crc = 0xFFFFFFFF;
- for (i = 0; i < tx_len; i++) {
- tx_data->buf[i] = i & 0xFF;
+ for (i = 0; i < tx_len-4; i++) {
+ p[i] = i & 0xFF;
crc = ((crc >> 8) & 0x00FFFFFF) ^
- crc_tab[(crc ^ tx_data->buf[i]) & 0xFF];
+ crc_tab[(crc ^ p[i]) & 0xFF];
}
- *((int *) &tx_data[tx_len]) = crc;
+ *(int *) &p[tx_len-4] = crc;
- cnt = write(fp, tx_data, 2048);
- if (cnt < 0)
- printf("Error returned from write: %d\n", cnt);
+ (*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_data->len;
+ bytes_transfered += tx_len;
if (bytes_transfered > (100 * 1000000)) {
gettimeofday(&finish_time, NULL);
@@ -196,7 +203,7 @@ static void *write_thread(void *threadid)
printf("Bytes transfered = %d, elapsed seconds = %d\n", bytes_transfered, elapsed_seconds);
printf("TX data transfer rate = %f K Samples/second\n",
- (float) bytes_transfered / (float) elapsed_seconds / 250);
+ (float) bytes_transfered / (float) elapsed_seconds / 4000);
start_time = finish_time;
@@ -213,6 +220,9 @@ int main(int argc, char *argv[])
pthread_t tx, rx;
long int t;
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
@@ -231,6 +241,29 @@ int main(int argc, char *argv[])
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 = %X\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 = 0;
if (strcmp(argv[1], "w") == 0)
fpga_config_flag |= (1 << 15);
diff --git a/host/apps/omap_debug/usrp-e-mm-loopback.c b/host/apps/omap_debug/usrp-e-mm-loopback.c
index f5fc83c87..b67eecd21 100644
--- a/host/apps/omap_debug/usrp-e-mm-loopback.c
+++ b/host/apps/omap_debug/usrp-e-mm-loopback.c
@@ -75,6 +75,8 @@ static void *read_thread(void *threadid)
ssize_t ret = poll(&pfd, 1, -1);
}
+ (*rxi)[rb_read].flags = RB_USER_PROCESS;
+
// printf("pkt received, rb_read = %d\n", rb_read);
cnt = (*rxi)[rb_read].len;
diff --git a/host/apps/omap_debug/usrp_e.h b/host/apps/omap_debug/usrp_e.h
index f96706c4a..4c6a5dd89 100644
--- a/host/apps/omap_debug/usrp_e.h
+++ b/host/apps/omap_debug/usrp_e.h
@@ -34,16 +34,13 @@ struct usrp_e_ctl32 {
#define UE_SPI_TXRX 1
/* Defines for spi ctrl register */
-#define UE_SPI_CTRL_TXNEG (BIT(10))
-#define UE_SPI_CTRL_RXNEG (BIT(9))
+#define UE_SPI_CTRL_TXNEG (1<<10)
+#define UE_SPI_CTRL_RXNEG (1<<9)
#define UE_SPI_PUSH_RISE 0
#define UE_SPI_PUSH_FALL UE_SPI_CTRL_TXNEG
#define UE_SPI_LATCH_RISE 0
#define UE_SPI_LATCH_FALL UE_SPI_CTRL_RXNEG
-#define USRP_E_GET_COMPAT_NUMBER _IO(USRP_E_IOC_MAGIC, 0x28)
-
-#define USRP_E_COMPAT_NUMBER 1
struct usrp_e_spi {
__u8 readback;
@@ -68,12 +65,16 @@ struct usrp_e_i2c {
#define USRP_E_I2C_READ _IOWR(USRP_E_IOC_MAGIC, 0x25, struct usrp_e_i2c)
#define USRP_E_I2C_WRITE _IOW(USRP_E_IOC_MAGIC, 0x26, struct usrp_e_i2c)
#define USRP_E_GET_RB_INFO _IOR(USRP_E_IOC_MAGIC, 0x27, struct usrp_e_ring_buffer_size_t)
+#define USRP_E_GET_COMPAT_NUMBER _IO(USRP_E_IOC_MAGIC, 0x28)
+
+#define USRP_E_COMPAT_NUMBER 1
/* Flag defines */
#define RB_USER (1<<0)
#define RB_KERNEL (1<<1)
#define RB_OVERRUN (1<<2)
#define RB_DMA_ACTIVE (1<<3)
+#define RB_USER_PROCESS (1<<4)
struct ring_buffer_info {
int flags;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 07:16:29 +0000