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SubjectRe: [PATCH] Adaptec USBXchange and USB2Xchange support
Date
Hi all,

On Wednesday 14 September 2005 12:18, Andrew Morton wrote:

> ..., then resend the patch, cc'ing
> linux-usb-devel@lists.sourceforge.net, thanks.

please find attached the revisited patch for the Adaptec USBXchange and
USB2Xchange USB<->SCSI cable.

Aside that the existing usb-storage code gives up scannign too early when
there is just a device with a high SCSI ID (e.g. 5 or 6) conected to the
USB2Xchange it works fine.

I'll try to come up with a solution for this high ID issue with the
USB2Xchange when I have the next free time slot.

Extracted, firmware loader compatible firmware is here:

http://dl.exactcode.de/adaptec-usbxchange/

diff -urN linux-2.6.15/drivers/usb/storage/Kconfig linux-2.6.15-usb2x/drivers/usb/storage/Kconfig
--- linux-2.6.15-mm4/drivers/usb/storage/Kconfig 2006-01-30 12:16:10.838447250 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/Kconfig 2006-01-30 12:09:28.857325000 +0100
@@ -134,6 +134,13 @@
this input in any keybinding software. (e.g. gnome's keyboard short-
cuts)

+config USB_USBXCHANGE
+ tristate "Adaptec USBXchange and USB2Xchange firmware loader"
+ depends on USB_STORAGE_USBXCHANGE
+ help
+ Say Y here to include additional code to load the firmware into the
+ Adaptec USBXchange and USB2Xchange USB --> SCSI converter dongle.
+
config USB_LIBUSUAL
bool "The shared table of common (or usual) storage devices"
depends on USB
diff -urN linux-2.6.15/drivers/usb/storage/Makefile linux-2.6.15-usb2x/drivers/usb/storage/Makefile
--- linux-2.6.15-mm4/drivers/usb/storage/Makefile 2006-01-30 12:16:10.838447250 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/Makefile 2006-01-30 12:08:29.781633000 +0100
@@ -24,6 +24,8 @@
usb-storage-objs := scsiglue.o protocol.o transport.o usb.o \
initializers.o $(usb-storage-obj-y)

+obj-$(CONFIG_USB_USBXCHANGE) += usbxchange_fw.o
+
ifneq ($(CONFIG_USB_LIBUSUAL),)
obj-$(CONFIG_USB) += libusual.o
endif
diff -urN linux-2.6.15/drivers/usb/storage/initializers.c linux-2.6.15-usb2x/drivers/usb/storage/initializers.c
--- linux-2.6.15/drivers/usb/storage/initializers.c 2006-01-30 12:16:10.826446500 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/initializers.c 2006-01-30 12:08:09.340355500 +0100
@@ -164,3 +164,27 @@
return USB_STOR_TRANSPORT_FAILED;
}

+/* Firmware Initialisation for the Adaptec USB2Xchange, needed for
+ * to recognize devices properly. René Rebe <rene@exactcode.de> */
+int usb2xchange_init(struct us_data *us)
+{
+ int result;
+
+ US_DEBUGP ("usb2xchange_init: initialising after reenumeration.\n");
+
+ result = usb_control_msg(us->pusb_dev, us->send_ctrl_pipe,
+ 0x5a, 0x40, 0x01,
+ 0, 0, // buffer,
+ 0, // length,
+ 300);
+ US_DEBUGP ("usb2xchange_init: reset #1 (%d)\n", result);
+
+ result = usb_control_msg(us->pusb_dev, us->send_ctrl_pipe,
+ 0x5a, 0x40, 0x02,
+ 0, 0, // buffer,
+ 0, // length,
+ 300);
+ US_DEBUGP ("usb2xchange_init: reset #2 (%d)\n", result);
+
+ return result;
+}
diff -urN linux-2.6.15/drivers/usb/storage/initializers.h linux-2.6.15-usb2x/drivers/usb/storage/initializers.h
--- linux-2.6.15-mm4/drivers/usb/storage/initializers.h 2006-01-30 12:16:10.826446500 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/initializers.h 2006-01-30 12:04:35.110967000 +0100
@@ -49,3 +49,6 @@
* flash reader */
int usb_stor_ucr61s2b_init(struct us_data *us);
int rio_karma_init(struct us_data *us);
+
+/* Firmware Initialization for the Adaptec USB2Xchange */
+int usb2xchange_init(struct us_data *us);
diff -urN linux-2.6.15/drivers/usb/storage/unusual_devs.h linux-2.6.15-usb2x/drivers/usb/storage/unusual_devs.h
--- linux-2.6.15/drivers/usb/storage/unusual_devs.h 2006-01-30 12:16:10.870449250 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/unusual_devs.h 2006-01-27 21:49:46.570867000 +0100
@@ -1180,6 +1180,21 @@
US_FL_SINGLE_LUN),
#endif

+/* Adaptec USBXchange and USB2Xchange, after firmware download.
+ * Requires Ez-USB Style firmware loader. René Rebe <rene@exactcode.de> */
+
+UNUSUAL_DEV( 0x03f3, 0x2001, 0x0000, 0xffff,
+ "Adaptec",
+ "USBXchange",
+ US_SC_SCSI, US_PR_BULK, NULL,
+ 0 ),
+
+UNUSUAL_DEV( 0x03f3, 0x2003, 0x0000, 0xffff,
+ "Adaptec",
+ "USB2Xchange",
+ US_SC_SCSI, US_PR_BULK, usb2xchange_init,
+ 0 ),
+
/* Control/Bulk transport for all SubClass values */
USUAL_DEV(US_SC_RBC, US_PR_CB, USB_US_TYPE_STOR),
USUAL_DEV(US_SC_8020, US_PR_CB, USB_US_TYPE_STOR),
diff -urN linux-2.6.15/drivers/usb/storage/usbxchange_fw.c linux-2.6.15-usb2x/drivers/usb/storage/usbxchange_fw.c
--- linux-2.6.15-mm4/drivers/usb/storage/usbxchange_fw.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/usbxchange_fw.c 2006-01-28 09:45:14.308438000 +0100
@@ -0,0 +1,215 @@
+/*
+ * Firmware loader for Adaptec USBXchange / USB2Xchange.
+ *
+ * Uploads device firmware into the Adaptec USBXchange and USB2Xchange
+ * USB --> SCSI dongle.
+ *
+ * Current development and maintenance by:
+ * (c) 2005 René Rebe <rene@exactcode.de>
+ *
+ * Initial work by:
+ * (c) 2004 Beier & Dauskardt IT <sda@bdit.de>
+ *
+ * Based on emi26.c:
+ * (c) 2002 Tapio Laxström <tapio.laxstrom@iptime.fi>
+ *
+ * To use this driver, you need to get the devices firmware from some
+ * windows driver:
+ * usbxchg_win_v120.exe - for USBXchange
+ * usb2xchg_win_drv_v200.exe - for USB2Xchange
+ *
+ * Hotplug firmware loader compatible files can be found at:
+ * http://dl.exactcode.de/adaptec-usbxchange/
+ *
+ * Note:
+ * The USB2Xchange seems to have some internal buffer < 64K.
+ * Sending 64K requests crashes the device. Possibly it needs a
+ * "max_sectors: 8" setting.
+ *
+ * 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.
+ *
+ * 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, version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/firmware.h>
+
+#include "usbxchange_fw.h"
+
+static int usbxchange_writememory(struct usb_device *dev, int address,
+ unsigned char *data, int length,
+ __u8 bRequest);
+static int usbxchange_set_reset(struct usb_device *dev, int cpureg,
+ unsigned char reset_bit);
+static int usbxchange_load_firmware(struct usb_device *dev);
+
+static int usbxchange_probe(struct usb_interface *iface,
+ const struct usb_device_id *id);
+static void usbxchange_disconnect(struct usb_interface *iface);
+static int __init usbxchange_init(void);
+static void __exit usbxchange_exit(void);
+
+#define usbxchange_VENDOR_ID 0x03f3
+#define usbxchange_PRODUCT_ID 0x2000
+#define usb2xchange_PRODUCT_ID 0x2002
+
+static struct usb_device_id usbxchange_usb_ids[] = {
+ {USB_DEVICE(usbxchange_VENDOR_ID, usbxchange_PRODUCT_ID)},
+ {USB_DEVICE(usbxchange_VENDOR_ID, usb2xchange_PRODUCT_ID)},
+ {} /* terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, usbxchange_usb_ids);
+
+/* thanks to drivers/usb/serial/keyspan_pda.c code */
+static int usbxchange_writememory(struct usb_device *dev, int address,
+ unsigned char *data, int length, __u8 request)
+{
+ int result;
+ unsigned char *buffer = kmalloc(length, GFP_KERNEL);
+
+ if (!buffer) {
+ printk(KERN_ERR "usbxchange: kmalloc(%d) failed.\n", length);
+ return -ENOMEM;
+ }
+ memcpy(buffer, data, length);
+ result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 0x40,
+ address, 0, buffer, length, 300);
+ kfree(buffer);
+ return result;
+}
+
+/* thanks to drivers/usb/serial/keyspan_pda.c code */
+static int usbxchange_set_reset(struct usb_device *dev, int cpureg,
+ unsigned char reset_bit)
+{
+ int response;
+ printk(KERN_INFO "%s - %d\n", __FUNCTION__, reset_bit);
+ response =
+ usbxchange_writememory(dev, cpureg, &reset_bit, 1,
+ ANCHOR_LOAD_INTERNAL);
+ if (response < 0) {
+ printk(KERN_ERR "usbxchange: set_reset (%d) failed\n",
+ reset_bit);
+ }
+ return response;
+}
+
+static int usbxchange_load_firmware(struct usb_device *dev)
+{
+ INTEL_HEX_RECORD *record;
+ int err, cpureg;
+
+ const struct firmware *firmware;
+
+ switch (le16_to_cpu(dev->descriptor.idProduct)) {
+ case usbxchange_PRODUCT_ID:
+ err = request_firmware(&firmware, "usbxchange.fw", &dev->dev);
+ cpureg = CPUCS_REG;
+ break;
+ case usb2xchange_PRODUCT_ID:
+ err = request_firmware(&firmware, "usb2xchange.fw", &dev->dev);
+ cpureg = CPUCS_REG_FX2;
+ break;
+ default:
+ printk(KERN_ERR "%s - device not recognized %x\n", __FUNCTION__,
+ le16_to_cpu(dev->descriptor.idProduct));
+ return 1;
+ }
+
+ if (err != 0) {
+ printk(KERN_ERR "Hotplug firmware request failed.\n");
+ return err;
+ }
+
+ /* Stop CPU */
+ err = usbxchange_set_reset(dev, cpureg, 1);
+ err = usbxchange_set_reset(dev, cpureg, 1);
+ if (err < 0) {
+ printk(KERN_ERR "%s - error stopping dongle CPU: error = %d\n",
+ __FUNCTION__, err);
+ return err;
+ }
+
+ /* Upload firmware */
+ for (record = (INTEL_HEX_RECORD *)firmware->data;
+ record->type == 0; record++) {
+
+ err = usbxchange_writememory(dev, le32_to_cpu(record->address),
+ record->data,
+ le32_to_cpu(record->length),
+ ANCHOR_LOAD_INTERNAL);
+ if (err < 0) {
+ printk(KERN_ERR
+ "%s - error loading firmware: error = %d\n",
+ __FUNCTION__, err);
+ return err;
+ }
+ }
+
+ /* De-assert reset (let the CPU run) */
+ err = usbxchange_set_reset(dev, cpureg, 1);
+ err = usbxchange_set_reset(dev, cpureg, 0);
+ if (err < 0) {
+ printk(KERN_ERR "%s - error resetting dongle CPU: error = %d\n",
+ __FUNCTION__, err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int usbxchange_probe(struct usb_interface *iface,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(iface);
+
+ printk(KERN_INFO "%s start\n", __FUNCTION__);
+
+ usbxchange_load_firmware(dev);
+
+ /* forcing an unload would save some kB of kernel memory ... */
+ return 0;
+}
+
+static void usbxchange_disconnect(struct usb_interface *iface)
+{
+}
+
+static struct usb_driver usbxchange_driver = {
+ .name = "usbxchange_fw",
+ .probe = usbxchange_probe,
+ .disconnect = usbxchange_disconnect,
+ .id_table = usbxchange_usb_ids,
+};
+
+static int __init usbxchange_init(void)
+{
+ usb_register(&usbxchange_driver);
+ return 0;
+}
+
+static void __exit usbxchange_exit(void)
+{
+ usb_deregister(&usbxchange_driver);
+}
+
+module_init(usbxchange_init);
+module_exit(usbxchange_exit);
+
+MODULE_AUTHOR("René Rebe <rene@exactcode.de>, Sancho Dauskardt <sda@bdit.de>");
+MODULE_DESCRIPTION("Adaptec USBXchange firmware loader.");
+MODULE_LICENSE("GPL");
+
+/* vi:ai:syntax=c:sw=8:ts=8:tw=80
+ */
diff -urN linux-2.6.15/drivers/usb/storage/usbxchange_fw.h linux-2.6.15-usb2x/drivers/usb/storage/usbxchange_fw.h
--- linux-2.6.15-mm4/drivers/usb/storage/usbxchange_fw.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-usb2x/drivers/usb/storage/usbxchange_fw.h 2006-01-27 17:18:18.246377000 +0100
@@ -0,0 +1,45 @@
+/*
+ * Firmware loader for Adaptec USBXchange / USB2Xchange.
+ *
+ * Uploads device firmware into the Adaptec USBXchange and USB2Xchange
+ * USB --> SCSI dongle.
+ *
+ * Current development and maintenance by:
+ * (c) 2005 René Rebe <rene@exactcode.de>
+ *
+ * Initial work by:
+ * (c) 2004 Beier & Dauskardt IT <sda@bdit.de>
+ *
+ * Based on emi26.c:
+ * (c) 2002 Tapio Laxström <tapio.laxstrom@iptime.fi>
+ *
+ * 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.
+ *
+ * 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, version 2.
+ */
+
+#ifndef _USB_USBXCHANGE_FW_H_INCLUDED
+#define _USB_USBXCHANGE_FW_H_INCLUDED
+
+#define MAX_INTEL_HEX_RECORD_LENGTH 16
+typedef struct _INTEL_HEX_RECORD {
+ __u32 length;
+ __u32 address;
+ __u32 type;
+ __u8 data[MAX_INTEL_HEX_RECORD_LENGTH];
+} INTEL_HEX_RECORD, *PINTEL_HEX_RECORD;
+
+/* Vendor specific request code for Anchor Upload/Download
+ (This one is implemented in the core). */
+#define ANCHOR_LOAD_INTERNAL 0xA0
+
+/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
+#define CPUCS_REG 0x7F92 /* original / FX */
+#define CPUCS_REG_FX2 0xE600 /* FX2 */
+
+#endif

--
René Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
http://www.exactcode.de | http://www.t2-project.org
+49 (0)30 255 897 45
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