Hi Pavel,
This is zaurus support for usbnet. Unlike usbdnet, it should not eat
disks. Diff against 2.5.42; please apply.
Thanks! How did you know I wanted to see a patch like this? :)
I did some minor cleanups ... can you retest the attached patch?
- your base patch
- adds a more complete GPL comment (overdue)
- all the fcs logic is in the tx_fixup
- so FLAG_ZAURUS is gone
- alphabetical order for these "micro drivers"
- make that data table readonly!
- add some comments, style tweaks, etc
If that behaves, I'll ask Greg to merge it.
- Dave
--- ./drivers-dist/usb/net/usbnet.c Wed Oct 16 14:02:10 2002
+++ ./drivers/usb/net/usbnet.c Fri Oct 18 17:43:45 2002
@@ -1,6 +1,21 @@
/*
* USB Host-to-Host Links
* Copyright (C) 2000-2002 by David Brownell <[EMAIL PROTECTED]>
+ * Copyright (C) 2002 Pavel Machek <[EMAIL PROTECTED]>
+ *
+ * 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
*/
/*
@@ -18,7 +33,7 @@
* - Belkin, eTEK (interops with Win32 drivers)
* - EPSON USB clients
* - GeneSys GL620USB-A
- * - "Linux Devices" (like iPaq and similar SA-1100 based PDAs)
+ * - "Linux Devices" (like iPaq, Yopy, Zaurus and similar ARM PDAs)
* - NetChip 1080 (interoperates with NetChip Win32 drivers)
* - Prolific PL-2301/2302 (replaces "plusb" driver)
*
@@ -37,9 +52,7 @@
* handshaking; it'd be worth implementing those as "carrier detect".
* Prefer generic hooks, not minidriver-specific hacks.
*
- * - Linux devices ... the www.handhelds.org SA-1100 support works nicely,
- * but the Sharp Zaurus uses an incompatible protocol (extra checksums).
- * No reason not to merge the Zaurus protocol here too (got patch? :)
+ * - Linux devices ... the www.handhelds.org SA-1100 support works nicely.
*
* - For Netchip, should use keventd to poll via control requests to detect
* hardware level "carrier detect".
@@ -100,6 +113,7 @@
* 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly
* for USB 2.0 TTs) and memory shortages (potential) too. (db)
* Use "locally assigned" IEEE802 address space. (Brad Hards)
+ * 18-oct-2002 Support for Zaurus (Pavel Machek)
*
*-------------------------------------------------------------------------*/
@@ -134,9 +148,10 @@
#define CONFIG_USB_LINUXDEV
#define CONFIG_USB_NET1080
#define CONFIG_USB_PL2301
+#define CONFIG_USB_ZAURUS
-#define DRIVER_VERSION "17-Jul-2002"
+#define DRIVER_VERSION "18-Oct-2002"
/*-------------------------------------------------------------------------*/
@@ -690,6 +705,9 @@
* support (arch/arm/sa1100/usb-eth.c); it's used in the iPaq PDA.
* And others too, like the Yopy.
*
+ * This describes the driver currently in www.handhelds.org kernels.
+ * The Zaurus uses a different driver (see later).
+ *
*-------------------------------------------------------------------------*/
static const struct driver_info linuxdev_info = {
@@ -1220,6 +1238,108 @@
+#ifdef CONFIG_USB_ZAURUS
+
+/*-------------------------------------------------------------------------
+ *
+ * Zaurus is a SA-1110 based PDA, but it uses different "firmware"
+ * for its USB slave/target controller than the "linuxdev" case above.
+ *
+ * The key differences are that (a) its got a msft-friendly configuration,
+ * and (b) the linux-friendly framing adds a crc32 to cope with some
+ * memory corruption observed with usb-to-memory transfers on at least
+ * some early hardware.
+ *
+ *-------------------------------------------------------------------------*/
+
+static const u32 crc32_table [256] = {
+ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+0xe963a535, 0x9e6495a3,
+ 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd,
+0xe7b82d07, 0x90bf1d91,
+ 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb,
+0xf4d4b551, 0x83d385c7,
+ 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+0xfa0f3d63, 0x8d080df5,
+ 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447,
+0xd20d85fd, 0xa50ab56b,
+ 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75,
+0xdcd60dcf, 0xabd13d59,
+ 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+0xcfba9599, 0xb8bda50f,
+ 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11,
+0xc1611dab, 0xb6662d3d,
+ 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+0x9fbfe4a5, 0xe8b8d433,
+ 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+0x91646c97, 0xe6635c01,
+ 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b,
+0x8208f4c1, 0xf50fc457,
+ 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49,
+0x8cd37cf3, 0xfbd44c65,
+ 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+0xa4d1c46d, 0xd3d6f4fb,
+ 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+0xaa0a4c5f, 0xdd0d7cc9,
+ 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3,
+0xb966d409, 0xce61e49f,
+ 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+0xb7bd5c3b, 0xc0ba6cad,
+ 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af,
+0x04db2615, 0x73dc1683,
+ 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d,
+0x0a00ae27, 0x7d079eb1,
+ 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+0x196c3671, 0x6e6b06e7,
+ 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9,
+0x17b7be43, 0x60b08ed5,
+ 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767,
+0x3fb506dd, 0x48b2364b,
+ 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+0x316e8eef, 0x4669be79,
+ 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703,
+0x220216b9, 0x5505262f,
+ 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+0x2cd99e8b, 0x5bdeae1d,
+ 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+0x72076785, 0x05005713,
+ 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d,
+0x7cdcefb7, 0x0bdbdf21,
+ 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b,
+0x6fb077e1, 0x18b74777,
+ 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+0x616bffd3, 0x166ccf45,
+ 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+0x4969474d, 0x3e6e77db,
+ 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5,
+0x47b2cf7f, 0x30b5ffe9,
+ 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+0x54de5729, 0x23d967bf,
+ 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1,
+0x5a05df1b, 0x2d02ef8d
+};
+
+#define CRC32_INITFCS 0xffffffff // Initial FCS value
+#define CRC32_FCS(fcs, c) (((fcs) >> 8) ^ crc32_table[((fcs) ^ (c)) & 0xff])
+
+/* fcs_compute32 - memcpy and calculate fcs
+ * Perform a memcpy and calculate fcs using ppp 32bit CRC algorithm.
+ */
+static u32 fcs_compute32 (unsigned char *sp, int len, u32 fcs)
+{
+ for (;len-- > 0; fcs = CRC32_FCS (fcs, *sp++))
+ continue;
+ return fcs;
+}
+
+static struct sk_buff *
+zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
+{
+ int padlen;
+ struct sk_buff *skb2;
+ u32 fcs;
+
+ padlen = 2;
+ fcs = fcs_compute32 (skb->data, skb->len, CRC32_INITFCS);
+ fcs = ~fcs;
+ 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)
+ goto fail;
+
+done:
+ *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;
+fail:
+ return skb;
+}
+
+static const struct driver_info zaurus_info = {
+ .description = "Sharp Zaurus",
+ .tx_fixup = zaurus_tx_fixup,
+
+ .in = 2, .out = 1,
+ .epsize = 64,
+};
+#endif
+
+
/*-------------------------------------------------------------------------
*
* Network Device Driver (peer link to "Host Device", from USB host)
@@ -1654,7 +1774,7 @@
/* could also map RINGPARAM to RX/TX QLEN */
}
- /* Note that the ethtool user space code requires EOPNOTSUPP */
+ /* Note that the ethtool user space code requires EOPNOTSUPP */
return -EOPNOTSUPP;
}
@@ -2043,6 +2163,16 @@
xdev->bus->bus_name, xdev->devpath,
dev->driver_info->description);
+#ifdef CONFIG_USB_ZAURUS
+ if (dev->driver_info == &zaurus_info) {
+ int status;
+ status = usb_set_configuration (xdev, 1);
+ devinfo (dev, "set config --> %d", status);
+ status = usb_set_interface (xdev, 1, 1);
+ devinfo (dev, "set altsetting --> %d", status);
+ }
+#endif
+
// ok, it's ready to go.
dev_set_drvdata (&udev->dev, net);
mutex_lock (&usbnet_mutex);
@@ -2110,17 +2240,17 @@
/*
* for example, this can be a host side talk-to-PDA driver.
* this driver is NOT what runs _inside_ a Linux device !!
+ * zaurus uses a different protocol and config option.
*/
{
// 1183 = 0x049F, both used as hex values?
+ // www.handhelds.org kernels use this (iPAQ history)
USB_DEVICE (0x049F, 0x505A), // Compaq "Itsy"
.driver_info = (unsigned long) &linuxdev_info,
}, {
USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
.driver_info = (unsigned long) &linuxdev_info,
-},
- // NOTE: the Sharp Zaurus uses a modified version of
- // this driver, which is not interoperable with this.
+},
#endif
#ifdef CONFIG_USB_NET1080
@@ -2143,6 +2273,23 @@
},
#endif
+#ifdef CONFIG_USB_ZAURUS
+/*
+ * Sharp Zaurus, "collie". A SA-1100 based Linux PDA, which
+ * uses a different driver than the iPAQ or Yopy kernels.
+ */
+{
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = 0x04DD,
+ .idProduct = 0x8004,
+ .bInterfaceClass = 0x0a,
+ .bInterfaceSubClass = 0x00,
+ .bInterfaceProtocol = 0x00,
+ .driver_info = (unsigned long) &zaurus_info,
+},
+#endif
+
/* KC2190 from www.sepoong.co.kr "InstaNET" */
{ }, // END
