1 files changed, 153 insertions, 0 deletions
diff --git a/firmware/microblaze/apps/cruft/sd_bounce.c b/firmware/microblaze/apps/cruft/sd_bounce.c
new file mode 100644
index 000000000..c1b48f170
--- /dev/null
+++ b/firmware/microblaze/apps/cruft/sd_bounce.c
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2007,2008 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/>.
+ */
+
+/* 
+ * Loopback SERDES to SERDES
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "u2_init.h"
+#include "memory_map.h"
+#include "spi.h"
+#include "hal_io.h"
+#include "buffer_pool.h"
+#include "pic.h"
+#include <stdbool.h>
+#include "nonstdio.h"
+#include "memset_wa.h"
+#include <dbsm.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <clocks.h>
+
+
+
+// ----------------------------------------------------------------
+
+#define SERDES_RX_BUF_0		0
+#define	SERDES_RX_BUF_1		1
+
+/*
+ * ================================================================
+ *      configure SD RX double buffering state machine
+ * ================================================================
+ */
+
+// receive from SERDES
+buf_cmd_args_t sd_recv_args = {
+  PORT_SERDES,
+  0,
+  BP_LAST_LINE
+};
+
+// send to SERDES
+buf_cmd_args_t sd_send_args = {
+  PORT_SERDES,
+  0,		// starts with packet in line 0
+  0,		// filled in from list_line register
+};
+
+dbsm_t sd_sm;	// the state machine
+
+
+
+
+// ----------------------------------------------------------------
+
+#if 0
+static bool
+check_packet(int *buf, int nlines)
+{
+  bool ok = true;
+  int i = 0;
+  for (i = 0; i < nlines; i++){
+    int expected = ((2*i + 0) << 16) | (2*i+1);
+    if (buf[i] != expected){
+      ok = false;
+      printf("buf[%d] = 0x%x  expected = 0x%x\n", i, buf[i], expected);
+    }
+  }
+  return ok;
+}
+
+static void
+zero_buffer(int bufno)
+{
+  memset_wa(buffer_ram(bufno), 0, BP_NLINES * 4);
+}
+#endif
+
+
+bool
+sd_rx_inspector(dbsm_t *sm, int buf_this)
+{
+  hal_toggle_leds(0x2);
+
+#if 0
+  int last_line = buffer_pool_status->last_line[buf_this];
+  bool ok = check_packet(buffer_ram(buf_this), last_line);
+  static int good = 0;
+  static int bad = 0;
+
+  if (ok)
+    good++;
+  else
+    bad++;
+
+  if(good+bad == 10000) {
+    printf("Good %d\tBad %d\n",good,bad);
+    good = 0;
+    bad = 0;
+  }
+#endif
+
+  return false;
+}
+
+
+inline static void
+buffer_irq_handler(void)
+{
+  uint32_t  status = buffer_pool_status->status;
+  dbsm_process_status(&sd_sm, status);
+}
+
+
+int
+main(void)
+{
+  u2_init();
+
+  putstr("\nsd_bounce\n");
+
+  // Get our clock from the mimo interface
+  clocks_mimo_config(MC_WE_LOCK_TO_MIMO);
+
+  dbsm_init(&sd_sm, SERDES_RX_BUF_0,
+	    &sd_recv_args, &sd_send_args,
+	    sd_rx_inspector);
+
+  // kick off the state machine
+  dbsm_start(&sd_sm);
+
+  while(1){
+    buffer_irq_handler();
+  }
+}