X-Git-Url: https://git.gag.com/?a=blobdiff_plain;ds=sidebyside;f=usrp2%2Ffirmware%2Fapps%2Fgen_pause_frames.c;fp=usrp2%2Ffirmware%2Fapps%2Fgen_pause_frames.c;h=8f2b2df0389ee964192a2e1090d1b8a649ce948f;hb=8a9ddbb0675f9bfcc6e03b457fba6c79474a3693;hp=0000000000000000000000000000000000000000;hpb=82d471b9b4a8b389b5da44b19c69c36420828382;p=debian%2Fgnuradio

diff --git a/usrp2/firmware/apps/gen_pause_frames.c b/usrp2/firmware/apps/gen_pause_frames.c
new file mode 100644
index 00000000..8f2b2df0
--- /dev/null
+++ b/usrp2/firmware/apps/gen_pause_frames.c
@@ -0,0 +1,207 @@
+/*
+ * Copyright 2007 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "u2_init.h"
+#include "memory_map.h"
+#include "spi.h"
+#include "hal_io.h"
+#include "buffer_pool.h"
+#include "pic.h"
+#include "bool.h"
+#include "ethernet.h"
+#include "nonstdio.h"
+#include "u2_eth_packet.h"
+#include "memcpy_wa.h"
+#include <stddef.h>
+#include <stdlib.h>
+
+
+// ----------------------------------------------------------------
+
+unsigned char dst_mac_addr[6] = {
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+};
+
+// ----------------------------------------------------------------
+
+// #define	PACKET_SIZE 1500		// bytes
+// #define ETH_DATA_RATE 1000000		// 1MB/s
+// #define	ETH_PACKET_RATE (ETH_DATA_RATE/PACKET_SIZE)	// 13,3333 pkts/s
+
+// static int timer_delta = MASTER_CLK_RATE/ETH_PACKET_RATE;	// ticks between interrupts
+
+static int timer_delta = MASTER_CLK_RATE/1000;	// tick at 1kHz
+
+static volatile bool send_packet_now = false;   // timer handler sets this
+static volatile bool link_is_up = false;	// eth handler sets this
+
+int packet_number = 0;
+
+// ----------------------------------------------------------------
+
+// debugging output on tx pins
+#define LS_MASK  0xE0000
+#define LS_1000  0x80000
+#define LS_100   0x40000
+#define LS_10    0x20000
+
+
+/*
+ * Called when eth phy state changes (w/ interrupts disabled)
+ */
+void
+link_changed_callback(int speed)
+{
+  int v = 0;
+  switch(speed){
+  case 10:
+    v = LS_10;
+    link_is_up = true;
+    break;
+    
+  case 100:
+    v = LS_100;
+    link_is_up = true;
+    break;
+    
+  case 1000:
+    v = LS_100;
+    link_is_up = true;
+    break;
+
+  default:
+    v = 0;
+    link_is_up = false;
+    break;
+  }
+
+  hal_gpio_set_tx(v, LS_MASK);	/* set debug bits on d'board */
+
+  putstr("\neth link changed: speed = ");
+  puthex16_nl(speed);
+}
+
+void
+timer_irq_handler(unsigned irq)
+{
+  hal_set_timeout(timer_delta);	// schedule next timeout
+  send_packet_now = 1;
+}
+
+
+void
+buffer_irq_handler(unsigned irq)
+{
+  // FIXME
+}
+
+static void
+init_packet(int *buf, const u2_eth_packet_t *pkt, int bufnum)
+{
+  int i = 0;
+  int mark = ((bufnum & 0xff) << 24) | 0x005A0000;
+
+  for (i = 0; i < BP_NLINES; i++){
+    buf[i] = mark | i;
+    mark ^= 0x00FF0000;
+  }
+
+  // copy header into buffer
+  memcpy_wa(buf, pkt, sizeof(*pkt));
+}
+
+static void
+init_packets(void)
+{
+  int	i;
+  
+  u2_eth_packet_t	pkt __attribute__((aligned (4)));
+
+  for (i = 0; i < 6; i++){
+    pkt.ehdr.dst.addr[i] = dst_mac_addr[i];
+  }
+  pkt.ehdr.src = *ethernet_mac_addr();
+  pkt.ehdr.ethertype = U2_ETHERTYPE;
+
+  // fill ALL buffers for debugging
+  for (i = 0; i < 8; i++)
+    init_packet((void *)buffer_ram(i), &pkt, i);
+}
+
+static int led_counter = 0;
+
+int
+main(void)
+{
+  int send_pause = 1;
+  
+  u2_init();
+
+  // setup tx gpio bits for GPIOM_FPGA_1 -- fpga debug output
+  //hal_gpio_set_sels(GPIO_TX_BANK, "1111111111111111");
+  //hal_gpio_set_sels(GPIO_RX_BANK, "1111111111111111");
+
+  putstr("\ngen_eth_packets\n");
+  
+  // Control LEDs
+  output_regs->leds = 0x00;
+
+  init_packets();
+
+  // pic_register_handler(IRQ_BUFFER, buffer_irq_handler);  // poll for now
+  pic_register_handler(IRQ_TIMER, timer_irq_handler);
+  hal_set_timeout(timer_delta);
+
+  ethernet_register_link_changed_callback(link_changed_callback);
+
+  ethernet_init();
+
+  eth_mac->pause_frame_send_en = 1;
+  eth_mac->pause_quanta_set = 16384 / 512;
+
+  // eth_mac->speed = 4;	// FIXME hardcode mac speed to 1000
+
+  while(1){
+    if (link_is_up && send_packet_now){
+      send_packet_now = false;
+
+
+      if (send_pause)
+	eth_mac->xon_cpu = 1;
+      else
+	eth_mac->xon_cpu = 0;
+
+      send_pause ^= 1;
+
+      // kick off the next packet
+      // FIXME set packet number in packet
+
+#if 0
+      bp_send_from_buf(0, PORT_ETH, 1, 0, 255);	// 1KB total
+
+      while ((buffer_pool_status->status & (BPS_DONE_0|BPS_ERROR_0)) == 0)
+	;
+      bp_clear_buf(0);
+#endif
+
+      output_regs->leds = ((++led_counter) & 0x1) | (link_is_up ? 0x2 : 0x0);
+    }
+  }
+
+  hal_finish();
+  return 1;
+}