[PATCH] USB: usbnet (6/9) module for Zaurii and compatibles
This moves usbnet support for Zaurus and compatibles into its own module.
Other than exporting a couple of helper functions, this just involved
shuffling some code and updating the comments.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig
index 0aafd59..20de109 100644
--- a/drivers/usb/net/Kconfig
+++ b/drivers/usb/net/Kconfig
@@ -140,23 +140,6 @@
comment "Intelligent USB Devices/Gadgets"
depends on USB_USBNET
-config USB_ZAURUS
- boolean "Sharp Zaurus (stock ROMs) and compatible"
- depends on USB_USBNET
- select CRC32
- default y
- help
- Choose this option to support the usb networking links used by
- Zaurus models like the SL-5000D, SL-5500, SL-5600, A-300, B-500.
- This also supports some related device firmware, as used in some
- PDAs from Olympus and some cell phones from Motorola.
-
- If you install an alternate ROM image, such as the Linux 2.6 based
- versions of OpenZaurus, you should no longer need to support this
- protocol. Only the "eth-fd" or "net_fd" drivers in these devices
- really need this non-conformant variant of CDC Ethernet (or in
- some cases CDC MDLM) protocol, not "g_ether".
-
config USB_CDCETHER
boolean "CDC Ethernet support (smart devices such as cable modems)"
depends on USB_USBNET
@@ -294,6 +277,23 @@
Choose this option to support the usb networking links used
by some sample firmware from Epson.
+config USB_NET_ZAURUS
+ tristate "Sharp Zaurus (stock ROMs) and compatible"
+ depends on USB_USBNET
+ select CRC32
+ default y
+ help
+ Choose this option to support the usb networking links used by
+ Zaurus models like the SL-5000D, SL-5500, SL-5600, A-300, B-500.
+ This also supports some related device firmware, as used in some
+ PDAs from Olympus and some cell phones from Motorola.
+
+ If you install an alternate ROM image, such as the Linux 2.6 based
+ versions of OpenZaurus, you should no longer need to support this
+ protocol. Only the "eth-fd" or "net_fd" drivers in these devices
+ really need this non-conformant variant of CDC Ethernet (or in
+ some cases CDC MDLM) protocol, not "g_ether".
+
config USB_ZD1201
tristate "USB ZD1201 based Wireless device support"
diff --git a/drivers/usb/net/Makefile b/drivers/usb/net/Makefile
index f9b181e..e13d7af 100644
--- a/drivers/usb/net/Makefile
+++ b/drivers/usb/net/Makefile
@@ -10,5 +10,6 @@
obj-$(CONFIG_USB_NET_GL620A) += gl620a.o
obj-$(CONFIG_USB_NET_NET1080) += net1080.o
obj-$(CONFIG_USB_NET_CDC_SUBSET) += cdc_subset.o
+obj-$(CONFIG_USB_NET_ZAURUS) += zaurus.o
obj-$(CONFIG_USB_USBNET) += usbnet.o
obj-$(CONFIG_USB_ZD1201) += zd1201.o
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index d52480a..75a05ab 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -1,7 +1,6 @@
/*
* USB Networking Links
* Copyright (C) 2000-2005 by David Brownell
- * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
*
* This program is free software; you can redistribute it and/or modify
@@ -173,14 +172,6 @@
/*-------------------------------------------------------------------------*/
-static u32 usbnet_get_link (struct net_device *);
-
-/* mostly for PDA style devices, which are always connected if present */
-static int always_connected (struct usbnet *dev)
-{
- return 0;
-}
-
/* handles CDC Ethernet and many other network "bulk data" interfaces */
int usbnet_get_endpoints(struct usbnet *dev, struct usb_interface *intf)
{
@@ -321,7 +312,7 @@
#define NEED_GENERIC_CDC
#endif
-#ifdef CONFIG_USB_ZAURUS
+#if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_ZAURUS_MODULE)
/* Ethernet variant uses funky framing, broken ethernet addressing */
#define NEED_GENERIC_CDC
#endif
@@ -336,14 +327,6 @@
#include <linux/usb_cdc.h>
-struct cdc_state {
- struct usb_cdc_header_desc *header;
- struct usb_cdc_union_desc *u;
- struct usb_cdc_ether_desc *ether;
- struct usb_interface *control;
- struct usb_interface *data;
-};
-
static struct usb_driver usbnet_driver;
/*
@@ -351,7 +334,7 @@
* endpoints, activates data interface (if needed), maybe sets MTU.
* all pure cdc, except for certain firmware workarounds.
*/
-static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
+int usbnet_generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
{
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
@@ -530,8 +513,9 @@
dev_info (&dev->udev->dev, "bad CDC descriptors\n");
return -ENODEV;
}
+EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
-static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
+void usbnet_cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
{
struct cdc_state *info = (void *) &dev->data;
@@ -551,6 +535,7 @@
info->control = NULL;
}
}
+EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
#endif /* NEED_GENERIC_CDC */
@@ -657,7 +642,7 @@
int status;
struct cdc_state *info = (void *) &dev->data;
- status = generic_cdc_bind (dev, intf);
+ status = usbnet_generic_cdc_bind (dev, intf);
if (status < 0)
return status;
@@ -679,7 +664,7 @@
.flags = FLAG_ETHER,
// .check_connect = cdc_check_connect,
.bind = cdc_bind,
- .unbind = cdc_unbind,
+ .unbind = usbnet_cdc_unbind,
.status = cdc_status,
};
@@ -758,239 +743,6 @@
#endif /* CONFIG_USB_PL2301 */
-#ifdef CONFIG_USB_ZAURUS
-#define HAVE_HARDWARE
-
-#include <linux/crc32.h>
-
-/*-------------------------------------------------------------------------
- *
- * Zaurus is also a SA-1110 based PDA, but one using a different driver
- * (and framing) for its USB slave/gadget controller than the case above.
- *
- * For the current version of that driver, the main way that framing is
- * nonstandard (also from perspective of the CDC ethernet model!) is a
- * crc32, added to help detect when some sa1100 usb-to-memory DMA errata
- * haven't been fully worked around. Also, all Zaurii use the same
- * default Ethernet address.
- *
- * PXA based models use the same framing, and also can't implement
- * set_interface properly.
- *
- * All known Zaurii lie about their standards conformance. Most lie by
- * saying they support CDC Ethernet. Some lie and say they support CDC
- * MDLM (as if for access to cell phone modems). Someone, please beat
- * on Sharp (and other such vendors) for a while with a cluestick.
- *
- *-------------------------------------------------------------------------*/
-
-static struct sk_buff *
-zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, unsigned flags)
-{
- int padlen;
- struct sk_buff *skb2;
-
- padlen = 2;
- if (!skb_cloned (skb)) {
- int tailroom = skb_tailroom (skb);
- if ((padlen + 4) <= tailroom)
- goto done;
- }
- skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags);
- dev_kfree_skb_any (skb);
- skb = skb2;
- if (skb) {
- u32 fcs;
-done:
- fcs = crc32_le (~0, skb->data, skb->len);
- fcs = ~fcs;
-
- *skb_put (skb, 1) = fcs & 0xff;
- *skb_put (skb, 1) = (fcs>> 8) & 0xff;
- *skb_put (skb, 1) = (fcs>>16) & 0xff;
- *skb_put (skb, 1) = (fcs>>24) & 0xff;
- }
- return skb;
-}
-
-static int zaurus_bind (struct usbnet *dev, struct usb_interface *intf)
-{
- /* Belcarra's funky framing has other options; mostly
- * TRAILERS (!) with 4 bytes CRC, and maybe 2 pad bytes.
- */
- dev->net->hard_header_len += 6;
- return generic_cdc_bind(dev, intf);
-}
-
-static const struct driver_info zaurus_sl5x00_info = {
- .description = "Sharp Zaurus SL-5x00",
- .flags = FLAG_FRAMING_Z,
- .check_connect = always_connected,
- .bind = zaurus_bind,
- .unbind = cdc_unbind,
- .tx_fixup = zaurus_tx_fixup,
-};
-#define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info)
-
-static const struct driver_info zaurus_pxa_info = {
- .description = "Sharp Zaurus, PXA-2xx based",
- .flags = FLAG_FRAMING_Z,
- .check_connect = always_connected,
- .bind = zaurus_bind,
- .unbind = cdc_unbind,
- .tx_fixup = zaurus_tx_fixup,
-};
-#define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info)
-
-static const struct driver_info olympus_mxl_info = {
- .description = "Olympus R1000",
- .flags = FLAG_FRAMING_Z,
- .check_connect = always_connected,
- .bind = zaurus_bind,
- .unbind = cdc_unbind,
- .tx_fixup = zaurus_tx_fixup,
-};
-#define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info)
-
-
-/* Some more recent products using Lineo/Belcarra code will wrongly claim
- * CDC MDLM conformance. They aren't conformant: data endpoints live
- * in the control interface, there's no data interface, and it's not used
- * to talk to a cell phone radio. But at least we can detect these two
- * pseudo-classes, rather than growing this product list with entries for
- * each new nonconformant product (sigh).
- */
-static const u8 safe_guid[16] = {
- 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
- 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
-};
-static const u8 blan_guid[16] = {
- 0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70,
- 0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37,
-};
-
-static int blan_mdlm_bind (struct usbnet *dev, struct usb_interface *intf)
-{
- u8 *buf = intf->cur_altsetting->extra;
- int len = intf->cur_altsetting->extralen;
- struct usb_cdc_mdlm_desc *desc = NULL;
- struct usb_cdc_mdlm_detail_desc *detail = NULL;
-
- while (len > 3) {
- if (buf [1] != USB_DT_CS_INTERFACE)
- goto next_desc;
-
- /* use bDescriptorSubType, and just verify that we get a
- * "BLAN" (or "SAFE") descriptor.
- */
- switch (buf [2]) {
- case USB_CDC_MDLM_TYPE:
- if (desc) {
- dev_dbg (&intf->dev, "extra MDLM\n");
- goto bad_desc;
- }
- desc = (void *) buf;
- if (desc->bLength != sizeof *desc) {
- dev_dbg (&intf->dev, "MDLM len %u\n",
- desc->bLength);
- goto bad_desc;
- }
- /* expect bcdVersion 1.0, ignore */
- if (memcmp(&desc->bGUID, blan_guid, 16)
- && memcmp(&desc->bGUID, safe_guid, 16) ) {
- /* hey, this one might _really_ be MDLM! */
- dev_dbg (&intf->dev, "MDLM guid\n");
- goto bad_desc;
- }
- break;
- case USB_CDC_MDLM_DETAIL_TYPE:
- if (detail) {
- dev_dbg (&intf->dev, "extra MDLM detail\n");
- goto bad_desc;
- }
- detail = (void *) buf;
- switch (detail->bGuidDescriptorType) {
- case 0: /* "SAFE" */
- if (detail->bLength != (sizeof *detail + 2))
- goto bad_detail;
- break;
- case 1: /* "BLAN" */
- if (detail->bLength != (sizeof *detail + 3))
- goto bad_detail;
- break;
- default:
- goto bad_detail;
- }
-
- /* assuming we either noticed BLAN already, or will
- * find it soon, there are some data bytes here:
- * - bmNetworkCapabilities (unused)
- * - bmDataCapabilities (bits, see below)
- * - bPad (ignored, for PADAFTER -- BLAN-only)
- * bits are:
- * - 0x01 -- Zaurus framing (add CRC)
- * - 0x02 -- PADBEFORE (CRC includes some padding)
- * - 0x04 -- PADAFTER (some padding after CRC)
- * - 0x08 -- "fermat" packet mangling (for hw bugs)
- * the PADBEFORE appears not to matter; we interop
- * with devices that use it and those that don't.
- */
- if ((detail->bDetailData[1] & ~02) != 0x01) {
- /* bmDataCapabilites == 0 would be fine too,
- * but framing is minidriver-coupled for now.
- */
-bad_detail:
- dev_dbg (&intf->dev,
- "bad MDLM detail, %d %d %d\n",
- detail->bLength,
- detail->bDetailData[0],
- detail->bDetailData[2]);
- goto bad_desc;
- }
- break;
- }
-next_desc:
- len -= buf [0]; /* bLength */
- buf += buf [0];
- }
-
- if (!desc || !detail) {
- dev_dbg (&intf->dev, "missing cdc mdlm %s%sdescriptor\n",
- desc ? "" : "func ",
- detail ? "" : "detail ");
- goto bad_desc;
- }
-
- /* There's probably a CDC Ethernet descriptor there, but we can't
- * rely on the Ethernet address it provides since not all vendors
- * bother to make it unique. Likewise there's no point in tracking
- * of the CDC event notifications.
- */
- return usbnet_get_endpoints (dev, intf);
-
-bad_desc:
- dev_info (&dev->udev->dev, "unsupported MDLM descriptors\n");
- return -ENODEV;
-}
-
-static const struct driver_info bogus_mdlm_info = {
- .description = "pseudo-MDLM (BLAN) device",
- .flags = FLAG_FRAMING_Z,
- .check_connect = always_connected,
- .tx_fixup = zaurus_tx_fixup,
- .bind = blan_mdlm_bind,
-};
-
-#else
-
-/* blacklist all those devices */
-#define ZAURUS_STRONGARM_INFO 0
-#define ZAURUS_PXA_INFO 0
-#define OLYMPUS_MXL_INFO 0
-
-#endif
-
-
/*-------------------------------------------------------------------------
*
* Network Device Driver (peer link to "Host Device", from USB host)
@@ -2003,101 +1755,6 @@
},
#endif
-#if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
-/*
- * SA-1100 based Sharp Zaurus ("collie"), or compatible.
- * Same idea as above, but different framing.
- *
- * PXA-2xx based models are also lying-about-cdc.
- * Some models don't even tell the same lies ...
- *
- * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
- * unlike the older ones with 2.4 "embedix" kernels.
- *
- * NOTE: These entries do double-duty, serving as blacklist entries
- * whenever Zaurus support isn't enabled, but CDC Ethernet is.
- */
-#define ZAURUS_MASTER_INTERFACE \
- .bInterfaceClass = USB_CLASS_COMM, \
- .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
- .bInterfaceProtocol = USB_CDC_PROTO_NONE
-{
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- .idProduct = 0x8004,
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_STRONGARM_INFO,
-}, {
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- .idProduct = 0x8005, /* A-300 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_PXA_INFO,
-}, {
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- .idProduct = 0x8006, /* B-500/SL-5600 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_PXA_INFO,
-}, {
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- .idProduct = 0x8007, /* C-700 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_PXA_INFO,
-}, {
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- .idProduct = 0x9031, /* C-750 C-760 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_PXA_INFO,
-}, {
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- .idProduct = 0x9032, /* SL-6000 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_PXA_INFO,
-}, {
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x04DD,
- /* reported with some C860 units */
- .idProduct = 0x9050, /* C-860 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = ZAURUS_PXA_INFO,
-},
-
-#ifdef CONFIG_USB_ZAURUS
- /* At least some (reports vary) PXA units have very different lies
- * about their standards support: they claim to be cell phones with
- * direct access to their radios. (They don't conform to CDC MDLM.)
- */
-{
- USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
- USB_CDC_PROTO_NONE),
- .driver_info = (unsigned long) &bogus_mdlm_info,
-},
-#endif
-
-/* Olympus has some models with a Zaurus-compatible option.
- * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
- */
-{
- .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
- | USB_DEVICE_ID_MATCH_DEVICE,
- .idVendor = 0x07B4,
- .idProduct = 0x0F02, /* R-1000 */
- ZAURUS_MASTER_INTERFACE,
- .driver_info = OLYMPUS_MXL_INFO,
-},
-#endif
-
#ifdef CONFIG_USB_CDCETHER
{
/* CDC Ether uses two interfaces, not necessarily consecutive.
diff --git a/drivers/usb/net/usbnet.h b/drivers/usb/net/usbnet.h
index 21b5feb..7aa0abd 100644
--- a/drivers/usb/net/usbnet.h
+++ b/drivers/usb/net/usbnet.h
@@ -126,6 +126,28 @@
extern void usbnet_disconnect(struct usb_interface *);
+/* Drivers that reuse some of the standard USB CDC infrastructure
+ * (notably, using multiple interfaces according to the the CDC
+ * union descriptor) get some helper code.
+ */
+struct cdc_state {
+ struct usb_cdc_header_desc *header;
+ struct usb_cdc_union_desc *u;
+ struct usb_cdc_ether_desc *ether;
+ struct usb_interface *control;
+ struct usb_interface *data;
+};
+
+extern int usbnet_generic_cdc_bind (struct usbnet *, struct usb_interface *);
+extern void usbnet_cdc_unbind (struct usbnet *, struct usb_interface *);
+
+/* CDC and RNDIS support the same host-chosen packet filters for IN transfers */
+#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \
+ |USB_CDC_PACKET_TYPE_ALL_MULTICAST \
+ |USB_CDC_PACKET_TYPE_PROMISCUOUS \
+ |USB_CDC_PACKET_TYPE_DIRECTED)
+
+
/* we record the state for each of our queued skbs */
enum skb_state {
illegal = 0,
diff --git a/drivers/usb/net/zaurus.c b/drivers/usb/net/zaurus.c
new file mode 100644
index 0000000..ee3b892
--- /dev/null
+++ b/drivers/usb/net/zaurus.c
@@ -0,0 +1,386 @@
+/*
+ * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
+ * Copyright (C) 2002-2005 by David Brownell
+ *
+ * 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 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+// #define DEBUG // error path messages, extra info
+// #define VERBOSE // more; success messages
+
+#include <linux/config.h>
+#ifdef CONFIG_USB_DEBUG
+# define DEBUG
+#endif
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/workqueue.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/usb.h>
+#include <linux/usb_cdc.h>
+
+#include "usbnet.h"
+
+
+/*
+ * All known Zaurii lie about their standards conformance. At least
+ * the earliest SA-1100 models lie by saying they support CDC Ethernet.
+ * Some later models (especially PXA-25x and PXA-27x based ones) lie
+ * and say they support CDC MDLM (for access to cell phone modems).
+ *
+ * There are non-Zaurus products that use these same protocols too.
+ *
+ * The annoying thing is that at the same time Sharp was developing
+ * that annoying standards-breaking software, the Linux community had
+ * a simple "CDC Subset" working reliably on the same SA-1100 hardware.
+ * That is, the same functionality but not violating standards.
+ *
+ * The CDC Ethernet nonconformance points are troublesome to hosts
+ * with a true CDC Ethernet implementation:
+ * - Framing appends a CRC, which the spec says drivers "must not" do;
+ * - Transfers data in altsetting zero, instead of altsetting 1;
+ * - All these peripherals use the same ethernet address.
+ *
+ * The CDC MDLM nonconformance is less immediately troublesome, since all
+ * MDLM implementations are quasi-proprietary anyway.
+ */
+
+static struct sk_buff *
+zaurus_tx_fixup(struct usbnet *dev, struct sk_buff *skb, unsigned flags)
+{
+ int padlen;
+ struct sk_buff *skb2;
+
+ padlen = 2;
+ if (!skb_cloned(skb)) {
+ int tailroom = skb_tailroom(skb);
+ if ((padlen + 4) <= tailroom)
+ goto done;
+ }
+ skb2 = skb_copy_expand(skb, 0, 4 + padlen, flags);
+ dev_kfree_skb_any(skb);
+ skb = skb2;
+ if (skb) {
+ u32 fcs;
+done:
+ fcs = crc32_le(~0, skb->data, skb->len);
+ fcs = ~fcs;
+
+ *skb_put (skb, 1) = fcs & 0xff;
+ *skb_put (skb, 1) = (fcs>> 8) & 0xff;
+ *skb_put (skb, 1) = (fcs>>16) & 0xff;
+ *skb_put (skb, 1) = (fcs>>24) & 0xff;
+ }
+ return skb;
+}
+
+static int zaurus_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ /* Belcarra's funky framing has other options; mostly
+ * TRAILERS (!) with 4 bytes CRC, and maybe 2 pad bytes.
+ */
+ dev->net->hard_header_len += 6;
+ dev->rx_urb_size = dev->net->hard_header_len + dev->net->mtu;
+ return usbnet_generic_cdc_bind(dev, intf);
+}
+
+/* PDA style devices are always connected if present */
+static int always_connected (struct usbnet *dev)
+{
+ return 0;
+}
+
+static const struct driver_info zaurus_sl5x00_info = {
+ .description = "Sharp Zaurus SL-5x00",
+ .flags = FLAG_FRAMING_Z,
+ .check_connect = always_connected,
+ .bind = zaurus_bind,
+ .unbind = usbnet_cdc_unbind,
+ .tx_fixup = zaurus_tx_fixup,
+};
+#define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info)
+
+static const struct driver_info zaurus_pxa_info = {
+ .description = "Sharp Zaurus, PXA-2xx based",
+ .flags = FLAG_FRAMING_Z,
+ .check_connect = always_connected,
+ .bind = zaurus_bind,
+ .unbind = usbnet_cdc_unbind,
+ .tx_fixup = zaurus_tx_fixup,
+};
+#define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info)
+
+static const struct driver_info olympus_mxl_info = {
+ .description = "Olympus R1000",
+ .flags = FLAG_FRAMING_Z,
+ .check_connect = always_connected,
+ .bind = zaurus_bind,
+ .unbind = usbnet_cdc_unbind,
+ .tx_fixup = zaurus_tx_fixup,
+};
+#define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info)
+
+
+/* Some more recent products using Lineo/Belcarra code will wrongly claim
+ * CDC MDLM conformance. They aren't conformant: data endpoints live
+ * in the control interface, there's no data interface, and it's not used
+ * to talk to a cell phone radio. But at least we can detect these two
+ * pseudo-classes, rather than growing this product list with entries for
+ * each new nonconformant product (sigh).
+ */
+static const u8 safe_guid[16] = {
+ 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
+ 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
+};
+static const u8 blan_guid[16] = {
+ 0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70,
+ 0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37,
+};
+
+static int blan_mdlm_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ u8 *buf = intf->cur_altsetting->extra;
+ int len = intf->cur_altsetting->extralen;
+ struct usb_cdc_mdlm_desc *desc = NULL;
+ struct usb_cdc_mdlm_detail_desc *detail = NULL;
+
+ while (len > 3) {
+ if (buf [1] != USB_DT_CS_INTERFACE)
+ goto next_desc;
+
+ /* use bDescriptorSubType, and just verify that we get a
+ * "BLAN" (or "SAFE") descriptor.
+ */
+ switch (buf [2]) {
+ case USB_CDC_MDLM_TYPE:
+ if (desc) {
+ dev_dbg(&intf->dev, "extra MDLM\n");
+ goto bad_desc;
+ }
+ desc = (void *) buf;
+ if (desc->bLength != sizeof *desc) {
+ dev_dbg(&intf->dev, "MDLM len %u\n",
+ desc->bLength);
+ goto bad_desc;
+ }
+ /* expect bcdVersion 1.0, ignore */
+ if (memcmp(&desc->bGUID, blan_guid, 16)
+ && memcmp(&desc->bGUID, safe_guid, 16) ) {
+ /* hey, this one might _really_ be MDLM! */
+ dev_dbg(&intf->dev, "MDLM guid\n");
+ goto bad_desc;
+ }
+ break;
+ case USB_CDC_MDLM_DETAIL_TYPE:
+ if (detail) {
+ dev_dbg(&intf->dev, "extra MDLM detail\n");
+ goto bad_desc;
+ }
+ detail = (void *) buf;
+ switch (detail->bGuidDescriptorType) {
+ case 0: /* "SAFE" */
+ if (detail->bLength != (sizeof *detail + 2))
+ goto bad_detail;
+ break;
+ case 1: /* "BLAN" */
+ if (detail->bLength != (sizeof *detail + 3))
+ goto bad_detail;
+ break;
+ default:
+ goto bad_detail;
+ }
+
+ /* assuming we either noticed BLAN already, or will
+ * find it soon, there are some data bytes here:
+ * - bmNetworkCapabilities (unused)
+ * - bmDataCapabilities (bits, see below)
+ * - bPad (ignored, for PADAFTER -- BLAN-only)
+ * bits are:
+ * - 0x01 -- Zaurus framing (add CRC)
+ * - 0x02 -- PADBEFORE (CRC includes some padding)
+ * - 0x04 -- PADAFTER (some padding after CRC)
+ * - 0x08 -- "fermat" packet mangling (for hw bugs)
+ * the PADBEFORE appears not to matter; we interop
+ * with devices that use it and those that don't.
+ */
+ if ((detail->bDetailData[1] & ~0x02) != 0x01) {
+ /* bmDataCapabilites == 0 would be fine too,
+ * but framing is minidriver-coupled for now.
+ */
+bad_detail:
+ dev_dbg(&intf->dev,
+ "bad MDLM detail, %d %d %d\n",
+ detail->bLength,
+ detail->bDetailData[0],
+ detail->bDetailData[2]);
+ goto bad_desc;
+ }
+ break;
+ }
+next_desc:
+ len -= buf [0]; /* bLength */
+ buf += buf [0];
+ }
+
+ if (!desc || !detail) {
+ dev_dbg(&intf->dev, "missing cdc mdlm %s%sdescriptor\n",
+ desc ? "" : "func ",
+ detail ? "" : "detail ");
+ goto bad_desc;
+ }
+
+ /* There's probably a CDC Ethernet descriptor there, but we can't
+ * rely on the Ethernet address it provides since not all vendors
+ * bother to make it unique. Likewise there's no point in tracking
+ * of the CDC event notifications.
+ */
+ return usbnet_get_endpoints(dev, intf);
+
+bad_desc:
+ dev_info(&dev->udev->dev, "unsupported MDLM descriptors\n");
+ return -ENODEV;
+}
+
+static const struct driver_info bogus_mdlm_info = {
+ .description = "pseudo-MDLM (BLAN) device",
+ .flags = FLAG_FRAMING_Z,
+ .check_connect = always_connected,
+ .tx_fixup = zaurus_tx_fixup,
+ .bind = blan_mdlm_bind,
+};
+
+static const struct usb_device_id products [] = {
+#define ZAURUS_MASTER_INTERFACE \
+ .bInterfaceClass = USB_CLASS_COMM, \
+ .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
+ .bInterfaceProtocol = USB_CDC_PROTO_NONE
+
+/* SA-1100 based Sharp Zaurus ("collie"), or compatible. */
+{
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x8004,
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_STRONGARM_INFO,
+},
+
+/* PXA-2xx based models are also lying-about-cdc. If you add any
+ * more devices that claim to be CDC Ethernet, make sure they get
+ * added to the blacklist in cdc_ether too.
+ *
+ * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
+ * unlike the older ones with 2.4 "embedix" kernels.
+ */
+{
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x8005, /* A-300 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_PXA_INFO,
+}, {
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x8006, /* B-500/SL-5600 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_PXA_INFO,
+}, {
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x8007, /* C-700 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_PXA_INFO,
+}, {
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x9031, /* C-750 C-760 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_PXA_INFO,
+}, {
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x9032, /* SL-6000 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_PXA_INFO,
+}, {
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ /* reported with some C860 units */
+ .idProduct = 0x9050, /* C-860 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = ZAURUS_PXA_INFO,
+},
+
+
+/* At least some of the newest PXA units have very different lies about
+ * their standards support: they claim to be cell phones offering
+ * direct access to their radios! (No, they don't conform to CDC MDLM.)
+ */
+{
+ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
+ USB_CDC_PROTO_NONE),
+ .driver_info = (unsigned long) &bogus_mdlm_info,
+},
+
+/* Olympus has some models with a Zaurus-compatible option.
+ * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
+ */
+{
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x07B4,
+ .idProduct = 0x0F02, /* R-1000 */
+ ZAURUS_MASTER_INTERFACE,
+ .driver_info = OLYMPUS_MXL_INFO,
+},
+ { }, // END
+};
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver zaurus_driver = {
+ .owner = THIS_MODULE,
+ .name = "zaurus",
+ .id_table = products,
+ .probe = usbnet_probe,
+ .disconnect = usbnet_disconnect,
+ .suspend = usbnet_suspend,
+ .resume = usbnet_resume,
+};
+
+static int __init zaurus_init(void)
+{
+ return usb_register(&zaurus_driver);
+}
+module_init(zaurus_init);
+
+static void __exit zaurus_exit(void)
+{
+ usb_deregister(&zaurus_driver);
+}
+module_exit(zaurus_exit);
+
+MODULE_AUTHOR("Pavel Machek, David Brownell");
+MODULE_DESCRIPTION("Sharp Zaurus PDA, and compatible products");
+MODULE_LICENSE("GPL");