summaryrefslogtreecommitdiff
path: root/drivers/usb/storage/debug.h
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/usb/storage/debug.h
Initial import
Diffstat (limited to 'drivers/usb/storage/debug.h')
-rw-r--r--drivers/usb/storage/debug.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/usb/storage/debug.h b/drivers/usb/storage/debug.h
new file mode 100644
index 000000000..f52520306
--- /dev/null
+++ b/drivers/usb/storage/debug.h
@@ -0,0 +1,71 @@
+/* Driver for USB Mass Storage compliant devices
+ * Debugging Functions Header File
+ *
+ * Current development and maintenance by:
+ * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
+ *
+ * Initial work by:
+ * (c) 1999 Michael Gee (michael@linuxspecific.com)
+ *
+ * This driver is based on the 'USB Mass Storage Class' document. This
+ * describes in detail the protocol used to communicate with such
+ * devices. Clearly, the designers had SCSI and ATAPI commands in
+ * mind when they created this document. The commands are all very
+ * similar to commands in the SCSI-II and ATAPI specifications.
+ *
+ * It is important to note that in a number of cases this class
+ * exhibits class-specific exemptions from the USB specification.
+ * Notably the usage of NAK, STALL and ACK differs from the norm, in
+ * that they are used to communicate wait, failed and OK on commands.
+ *
+ * Also, for certain devices, the interrupt endpoint is used to convey
+ * status of a command.
+ *
+ * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
+ * information about this driver.
+ *
+ * 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 2, 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, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _DEBUG_H_
+#define _DEBUG_H_
+
+#include <linux/kernel.h>
+
+#define USB_STORAGE "usb-storage: "
+
+#ifdef CONFIG_USB_STORAGE_DEBUG
+void usb_stor_show_command(const struct us_data *us, struct scsi_cmnd *srb);
+void usb_stor_show_sense(const struct us_data *us, unsigned char key,
+ unsigned char asc, unsigned char ascq);
+__printf(2, 3) void usb_stor_dbg(const struct us_data *us,
+ const char *fmt, ...);
+
+#define US_DEBUGPX(fmt, ...) printk(fmt, ##__VA_ARGS__)
+#define US_DEBUG(x) x
+#else
+__printf(2, 3)
+static inline void _usb_stor_dbg(const struct us_data *us,
+ const char *fmt, ...)
+{
+}
+#define usb_stor_dbg(us, fmt, ...) \
+ do { if (0) _usb_stor_dbg(us, fmt, ##__VA_ARGS__); } while (0)
+#define US_DEBUGPX(fmt, ...) \
+ do { if (0) printk(fmt, ##__VA_ARGS__); } while (0)
+#define US_DEBUG(x)
+#endif
+
+#endif