From d088a11bf7c257ba45bf0c37a41e5038b302bc44 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Wed, 10 Feb 2010 11:57:58 -0800
Subject: Copied a snapshot of the usrp2 firmware into the microblaze firmware
 directory in the uhd repo. Added erllc copyrights to the files created and
 modified at erllc.

---
 firmware/microblaze/apps/double_buffer_fragment.c | 138 ++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 firmware/microblaze/apps/double_buffer_fragment.c

(limited to 'firmware/microblaze/apps/double_buffer_fragment.c')

diff --git a/firmware/microblaze/apps/double_buffer_fragment.c b/firmware/microblaze/apps/double_buffer_fragment.c
new file mode 100644
index 000000000..cfc061247
--- /dev/null
+++ b/firmware/microblaze/apps/double_buffer_fragment.c
@@ -0,0 +1,138 @@
+#if 0
+void 
+double_buffering(int port) {
+  unsigned int localstatus = buffer_pool_status->status;
+
+  if(localstatus & BPS_DONE_0) {
+    bp_clear_buf(0);
+    if(buffer_state[0] == FILLING) {
+      buffer_state[0] = FULL;
+      if(buffer_state[1] == EMPTY) {
+	bp_receive_to_buf(1, 1, 1, 10, 509);  // DSP_RX to buffer 1, use 500 lines
+	buffer_state[1] = FILLING;
+      }
+      else
+	dsp_rx_idle = 1;
+      if(serdes_tx_idle) {
+	serdes_tx_idle = 0;
+	bp_send_from_buf(0, port, 1, 10, 509);  // SERDES_TX from buffer 0
+	buffer_state[0] = EMPTYING;
+      }
+    }
+    else {  // buffer was emptying
+      buffer_state[0] = EMPTY;
+      if(dsp_rx_idle) {
+	dsp_rx_idle = 0;
+	bp_receive_to_buf(0, 1, 1, 10, 509);  // DSP_RX to buffer 0, use 500 lines
+	buffer_state[0] = FILLING;
+      }
+      if(buffer_state[1] == FULL) {
+	bp_send_from_buf(1, port, 1, 10, 509);  // SERDES_TX from buffer 1
+	buffer_state[1] = EMPTYING;
+      }
+      else
+	serdes_tx_idle = 1;
+    }
+    putstr("Int Proc'ed 0\n");
+  }
+
+  if(localstatus & BPS_DONE_1) {
+    bp_clear_buf(1);
+    if(buffer_state[1] == FILLING) {
+      buffer_state[1] = FULL;
+      if(buffer_state[0] == EMPTY) {
+	bp_receive_to_buf(0, 1, 1, 10, 509);  // DSP_RX to buffer 1, use 500 lines
+	buffer_state[0] = FILLING;
+      }
+      else
+	dsp_rx_idle = 1;
+      if(serdes_tx_idle) {
+	serdes_tx_idle = 0;
+	bp_send_from_buf(1, port, 1, 10, 509);  // SERDES_TX from buffer 1
+	buffer_state[1] = EMPTYING;
+      }
+    }
+    else {  // buffer was emptying
+      buffer_state[1] = EMPTY;
+      if(dsp_rx_idle) {
+	dsp_rx_idle = 0;
+	bp_receive_to_buf(1, 1, 1, 10, 509);  // DSP_RX to buffer 1, use 500 lines
+	buffer_state[1] = FILLING;
+      }
+      if(buffer_state[0] == FULL) {
+	bp_send_from_buf(0, port, 1, 10, 509);  // SERDES_TX from buffer 0
+	buffer_state[0] = EMPTYING;
+      }
+      else
+	serdes_tx_idle = 1;
+    }
+  putstr("Int Proc'ed 1\n");
+  }
+
+  if(localstatus & BPS_DONE_2) {
+    bp_clear_buf(2);
+    if(buffer_state[2] == FILLING) {
+      buffer_state[2] = FULL;
+      if(buffer_state[3] == EMPTY) {
+	bp_receive_to_buf(3, port, 1, 5, 504);  // SERDES_RX to buffer 3, use 500 lines
+	buffer_state[3] = FILLING;
+      }
+      else
+	serdes_rx_idle = 1;
+      if(dsp_tx_idle) {
+	dsp_tx_idle = 0;
+	bp_send_from_buf(2, 1, 1, 5, 504);  // DSP_TX from buffer 2
+	buffer_state[2] = EMPTYING;
+      }
+    }
+    else {  // buffer was emptying
+      buffer_state[2] = EMPTY;
+      if(serdes_rx_idle) {
+	serdes_rx_idle = 0;
+	bp_receive_to_buf(2, port, 1, 5, 504);  // SERDES_RX to buffer 2
+	buffer_state[2] = FILLING;
+      }
+      if(buffer_state[3] == FULL) {
+	bp_send_from_buf(3, 1, 1, 5, 504);  // DSP_TX from buffer 3
+	buffer_state[3] = EMPTYING;
+      }
+      else
+	dsp_tx_idle = 1;
+    }
+  putstr("Int Proc'ed 2\n");
+  }
+
+  if(localstatus & BPS_DONE_3) {
+    bp_clear_buf(3);
+    if(buffer_state[3] == FILLING) {
+      buffer_state[3] = FULL;
+      if(buffer_state[2] == EMPTY) {
+	bp_receive_to_buf(2, port, 1, 5, 504);  // SERDES_RX to buffer 2, use 500 lines
+	buffer_state[2] = FILLING;
+      }
+      else
+	serdes_rx_idle = 1;
+      if(dsp_tx_idle) {
+	dsp_tx_idle = 0;
+	bp_send_from_buf(3, 1, 1, 5, 504);  // DSP_TX from buffer 3
+	buffer_state[3] = EMPTYING;
+      }
+    }
+    else {  // buffer was emptying
+      buffer_state[3] = EMPTY;
+      if(serdes_rx_idle) {
+	serdes_rx_idle = 0;
+	bp_receive_to_buf(3, port, 1, 5, 504);  // SERDES_RX to buffer 3
+	buffer_state[3] = FILLING;
+      }
+      if(buffer_state[2] == FULL) {
+	bp_send_from_buf(2, 1, 1, 5, 504);  // DSP_TX from buffer 2
+	buffer_state[2] = EMPTYING;
+      }
+      else
+	dsp_tx_idle = 1;
+    }
+  putstr("Int Proc'ed 3\n");
+  }
+}
+#endif
-- 
cgit v1.2.3