1 files changed, 490 insertions, 0 deletions
diff --git a/usrp/host/lib/usrp_prims_libusb.cc b/usrp/host/lib/usrp_prims_libusb.cc
new file mode 100644
index 0000000000..841d447ae4
--- /dev/null
+++ b/usrp/host/lib/usrp_prims_libusb.cc
@@ -0,0 +1,490 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2003,2004,2006,2009 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio 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, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "usrp/usrp_prims.h"
+#include "usrp_commands.h"
+#include "usrp_ids.h"
+#include "usrp_i2c_addr.h"
+#include "fpga_regs_common.h"
+#include "fpga_regs_standard.h"
+#include <usb.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <time.h>		// FIXME should check with autoconf (nanosleep)
+#include <algorithm>
+#include <ad9862.h>
+#include <assert.h>
+
+extern "C" {
+#include "md5.h"
+};
+
+#define VERBOSE 0
+
+using namespace ad9862;
+
+/*
+ * Forward Declarations
+ */
+
+bool our_nanosleep (const struct timespec *delay);
+const char *get_proto_filename (const std::string user_filename,
+                                const char *env_var,
+                                const char *def);
+char *find_file (const char *filename, int hw_rev);
+void load_status_msg (usrp_load_status_t s, const char *type,
+                      const char *filename);
+bool usrp1_fpga_write (libusb_device_handle *udh, int regno, int value);
+bool usrp1_fpga_read (libusb_device_handle *udh, int regno, int *value);
+bool usrp_set_switch (libusb_device_handle *udh, int cmd_byte, bool on);
+
+bool usrp_set_fpga_reset (struct usb_dev_handle *udh, bool on);
+bool usrp_set_fpga_tx_enable (struct usb_dev_handle *udh, bool on);
+bool usrp_set_fpga_rx_enable (struct usb_dev_handle *udh, bool on);
+bool usrp_set_fpga_tx_reset (struct usb_dev_handle *udh, bool on);
+bool usrp_set_fpga_rx_reset (struct usb_dev_handle *udh, bool on);
+
+
+
+static const int FIRMWARE_HASH_SLOT	= 0;
+static const int FPGA_HASH_SLOT 	= 1;
+
+static const int hash_slot_addr[2] = {
+  USRP_HASH_SLOT_0_ADDR,
+  USRP_HASH_SLOT_1_ADDR
+};
+
+static const char *default_firmware_filename = "std.ihx";
+static const char *default_fpga_filename     = "std_2rxhb_2tx.rbf";
+
+#include "std_paths.h"
+#include <stdio.h>
+
+void
+usrp_one_time_init ()
+{
+  static bool first = true;
+
+  if (first){
+    first = false;
+    usb_init ();			// usb library init
+    usb_find_busses ();
+    usb_find_devices ();
+  }
+}
+
+void
+usrp_rescan ()
+{
+  usb_find_busses ();
+  usb_find_devices ();
+}
+
+// ----------------------------------------------------------------
+
+/*
+ * q must be a real USRP, not an FX2.  Return its hardware rev number.
+ */
+int
+usrp_hw_rev (struct usb_device *q)
+{
+  return q->descriptor.bcdDevice & 0x00FF;
+}
+
+/*
+ * q must be a real USRP, not an FX2.  Return true if it's configured.
+ */
+static bool
+_usrp_configured_p (struct usb_device *q)
+{
+  return (q->descriptor.bcdDevice & 0xFF00) != 0;
+}
+
+bool
+usrp_usrp_p (struct usb_device *q)
+{
+  return (q->descriptor.idVendor == USB_VID_FSF
+	  && q->descriptor.idProduct == USB_PID_FSF_USRP);
+}
+
+bool
+usrp_fx2_p (struct usb_device *q)
+{
+  return (q->descriptor.idVendor == USB_VID_CYPRESS
+	  && q->descriptor.idProduct == USB_PID_CYPRESS_FX2);
+}
+
+// ----------------------------------------------------------------
+
+struct usb_device *
+usrp_find_device (int nth, bool fx2_ok_p, libusb_context *ctx)
+{
+  struct usb_bus *p;
+  struct usb_device *q;
+  int	 n_found = 0;
+
+  usrp_one_time_init ();
+  
+  p = usb_get_busses();
+  while (p != NULL){
+    q = p->devices;
+    while (q != NULL){
+      if (usrp_usrp_p (q) || (fx2_ok_p && usrp_fx2_p (q))){
+	if (n_found == nth)	// return this one
+	  return q;
+	n_found++;		// keep looking
+      }
+      q = q->next;
+    }
+    p = p->next;
+  }
+  return 0;	// not found
+}
+
+struct usb_dev_handle *
+usrp_open_interface (struct usb_device *dev, int interface, int altinterface)
+{
+  struct usb_dev_handle *udh = usb_open (dev);
+  if (udh == 0)
+    return 0;
+
+  if (dev != usb_device (udh)){
+    fprintf (stderr, "%s:%d: internal error!\n", __FILE__, __LINE__);
+    abort ();
+  }
+
+#if defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+  // There's no get get_configuration function, and with some of the newer kernels
+  // setting the configuration, even if to the same value, hoses any other processes
+  // that have it open.  Hence we opt to not set it at all (We've only
+  // got a single configuration anyway).  This may hose the win32 stuff...
+
+  // Appears to be required for libusb-win32 and Cygwin -- dew 09/20/06
+  if (usb_set_configuration (udh, 1) < 0){
+    /*
+     * Ignore this error.  
+     *
+     * Seems that something changed in drivers/usb/core/devio.c:proc_setconfig such that
+     * it returns -EBUSY if _any_ of the interfaces of a device are open.
+     * We've only got a single configuration, so setting it doesn't even seem
+     * like it should be required.
+     */
+  }
+#endif
+
+  if (usb_claim_interface (udh, interface) < 0){
+    fprintf (stderr, "%s:usb_claim_interface: failed interface %d\n", __FUNCTION__,interface);
+    fprintf (stderr, "%s\n", usb_strerror());
+    usb_close (udh);
+    return 0;
+  }
+
+  if (usb_set_altinterface (udh, altinterface) < 0){
+    fprintf (stderr, "%s:usb_set_alt_interface: failed\n", __FUNCTION__);
+    fprintf (stderr, "%s\n", usb_strerror());
+    usb_release_interface (udh, interface);
+    usb_close (udh);
+    return 0;
+  }
+
+  return udh;
+}
+
+bool
+usrp_close_interface (struct usb_dev_handle *udh)
+{
+  // we're assuming that closing an interface automatically releases it.
+  return usb_close (udh) == 0;
+}
+
+// ----------------------------------------------------------------
+// write internal ram using Cypress vendor extension
+
+bool
+write_internal_ram (struct usb_dev_handle *udh, unsigned char *buf,
+		    int start_addr, size_t len)
+{
+  int addr;
+  int n;
+  int a;
+  int quanta = MAX_EP0_PKTSIZE;
+
+  for (addr = start_addr; addr < start_addr + (int) len; addr += quanta){
+    n = len + start_addr - addr;
+    if (n > quanta)
+      n = quanta;
+
+    a = usb_control_msg (udh, 0x40, 0xA0,
+			 addr, 0, (char *)(buf + (addr - start_addr)), n, 1000);
+
+    if (a < 0){
+      fprintf(stderr,"write_internal_ram failed: %s\n", usb_strerror());
+      return false;
+    }
+  }
+  return true;
+}
+
+
+// ----------------------------------------------------------------
+// write vendor extension command to USRP
+
+int
+write_cmd (struct usb_dev_handle *udh,
+	   int request, int value, int index,
+	   unsigned char *bytes, int len)
+{
+  int	requesttype = (request & 0x80) ? VRT_VENDOR_IN : VRT_VENDOR_OUT;
+
+  int r = usb_control_msg (udh, requesttype, request, value, index,
+			   (char *) bytes, len, 1000);
+  if (r < 0){
+    // we get EPIPE if the firmware stalls the endpoint.
+    if (errno != EPIPE)
+      fprintf (stderr, "usb_control_msg failed: %s\n", usb_strerror ());
+  }
+
+  return r;
+}
+
+
+bool
+usrp_set_hash (struct usb_dev_handle *udh, int which,
+	       const unsigned char hash[USRP_HASH_SIZE])
+{
+  which &= 1;
+  
+  // we use the Cypress firmware down load command to jam it in.
+  int r = usb_control_msg (udh, 0x40, 0xa0, hash_slot_addr[which], 0,
+			   (char *) hash, USRP_HASH_SIZE, 1000);
+  return r == USRP_HASH_SIZE;
+}
+
+bool
+usrp_get_hash (struct usb_dev_handle *udh, int which, 
+	       unsigned char hash[USRP_HASH_SIZE])
+{
+  which &= 1;
+  
+  // we use the Cypress firmware upload command to fetch it.
+  int r = usb_control_msg (udh, 0xc0, 0xa0, hash_slot_addr[which], 0,
+			   (char *) hash, USRP_HASH_SIZE, 1000);
+  return r == USRP_HASH_SIZE;
+}
+
+bool
+usrp_write_fpga_reg (struct usb_dev_handle *udh, int reg, int value)
+{
+  switch (usrp_hw_rev (usb_device (udh))){
+  case 0:			// not supported ;)
+    abort();	
+
+  default:
+    return usrp1_fpga_write (udh, reg, value);
+  }
+}
+
+bool
+usrp_read_fpga_reg (struct usb_dev_handle *udh, int reg, int *value)
+{
+  switch (usrp_hw_rev (usb_device (udh))){
+  case 0:		// not supported ;)
+    abort();
+    
+  default:
+    return usrp1_fpga_read (udh, reg, value);
+  }
+}
+
+
+
+
+static usb_dev_handle *
+open_nth_cmd_interface (int nth)
+{
+  struct usb_device *udev = usrp_find_device (nth);
+  if (udev == 0){
+    fprintf (stderr, "usrp: failed to find usrp[%d]\n", nth);
+    return 0;
+  }
+
+  struct usb_dev_handle *udh;
+
+  udh = usrp_open_cmd_interface (udev);
+  if (udh == 0){
+    // FIXME this could be because somebody else has it open.
+    // We should delay and retry...
+    fprintf (stderr, "open_nth_cmd_interface: open_cmd_interface failed\n");
+    usb_strerror ();
+    return 0;
+  }
+
+  return udh;
+}
+
+
+usrp_load_status_t
+usrp_load_firmware_nth (int nth, const char *filename, bool force, libusb_context *ctx){
+  struct usb_dev_handle *udh = open_nth_cmd_interface (nth);
+  if (udh == 0)
+    return ULS_ERROR;
+
+  usrp_load_status_t s = usrp_load_firmware (udh, filename, force);
+  usrp_close_interface (udh);
+
+  switch (s){
+
+  case ULS_ALREADY_LOADED:		// nothing changed...
+    return ULS_ALREADY_LOADED;
+    break;
+
+  case ULS_OK:
+    // we loaded firmware successfully.
+
+    // It's highly likely that the board will renumerate (simulate a
+    // disconnect/reconnect sequence), invalidating our current
+    // handle.
+
+    // FIXME.  Turn this into a loop that rescans until we refind ourselves
+    
+    struct timespec	t;	// delay for 1 second
+    t.tv_sec = 2;
+    t.tv_nsec = 0;
+    our_nanosleep (&t);
+
+    usb_find_busses ();		// rescan busses and devices
+    usb_find_devices ();
+
+    return ULS_OK;
+
+  default:
+  case ULS_ERROR:		// some kind of problem
+    return ULS_ERROR;
+  }
+}
+
+bool
+usrp_load_standard_bits (int nth, bool force,
+			 const std::string fpga_filename,
+			 const std::string firmware_filename,
+			 libusb_context *ctx)
+{
+  usrp_load_status_t 	s;
+  const char		*filename;
+  const char		*proto_filename;
+  int hw_rev;
+
+  // first, figure out what hardware rev we're dealing with
+  {
+    struct usb_device *udev = usrp_find_device (nth);
+    if (udev == 0){
+      fprintf (stderr, "usrp: failed to find usrp[%d]\n", nth);
+      return false;
+    }
+    hw_rev = usrp_hw_rev (udev);
+  }
+
+  // start by loading the firmware
+
+  proto_filename = get_proto_filename(firmware_filename, "USRP_FIRMWARE",
+				      default_firmware_filename);
+  filename = find_file(proto_filename, hw_rev);
+  if (filename == 0){
+    fprintf (stderr, "Can't find firmware: %s\n", proto_filename);
+    return false;
+  }
+
+  s = usrp_load_firmware_nth (nth, filename, force);
+  load_status_msg (s, "firmware", filename);
+
+  if (s == ULS_ERROR)
+    return false;
+
+  // if we actually loaded firmware, we must reload fpga ...
+  if (s == ULS_OK)
+    force = true;
+
+  // now move on to the fpga configuration bitstream
+
+  proto_filename = get_proto_filename(fpga_filename, "USRP_FPGA",
+				      default_fpga_filename);
+  filename = find_file (proto_filename, hw_rev);
+  if (filename == 0){
+    fprintf (stderr, "Can't find fpga bitstream: %s\n", proto_filename);
+    return false;
+  }
+
+  struct usb_dev_handle *udh = open_nth_cmd_interface (nth);
+  if (udh == 0)
+    return false;
+  
+  s = usrp_load_fpga (udh, filename, force);
+  usrp_close_interface (udh);
+  load_status_msg (s, "fpga bitstream", filename);
+
+  if (s == ULS_ERROR)
+    return false;
+
+  return true;
+}
+
+void
+power_down_9862s (struct usb_dev_handle *udh)
+{
+  static const unsigned char regs[] = {
+    REG_RX_PWR_DN,      0x01,              // everything
+    REG_TX_PWR_DN,      0x0f,              // pwr dn digital and analog_both
+    REG_TX_MODULATOR,   0x00               // coarse & fine modulators disabled
+  };
+
+  switch (usrp_hw_rev (usb_device (udh))){
+  case 0:
+    break;
+
+  default:
+    usrp_9862_write_many_all (udh, regs, sizeof (regs));
+    break;
+  }
+}
+
+
+std::string
+usrp_serial_number(struct usb_dev_handle *udh)
+{
+  unsigned char iserial = usb_device(udh)->descriptor.iSerialNumber;
+  if (iserial == 0)
+    return "";
+
+  char buf[1024];
+  if (usb_get_string_simple(udh, iserial, buf, sizeof(buf)) < 0)
+    return "";
+
+  return buf;
+}