ChangeSet 1.1005.1.7, 2003/06/27 11:59:24-07:00, [EMAIL PROTECTED]
[PATCH] USB speedtouch: use common CRC library
Remove the speedtouch CRC library. With this change, the speedtch
module is no longer a multi-part object, so fix that up too.
drivers/usb/speedcrc.c | 124 ----
drivers/usb/speedcrc.h | 28
drivers/usb/speedtouch.c | 1344 -----------------------------------------------
drivers/usb/Makefile | 4
drivers/usb/Makefile.lib | 1
drivers/usb/speedtch.c | 1344 +++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 1345 insertions(+), 1500 deletions(-)
diff -Nru a/drivers/usb/Makefile b/drivers/usb/Makefile
--- a/drivers/usb/Makefile Fri Jun 27 16:27:13 2003
+++ b/drivers/usb/Makefile Fri Jun 27 16:27:13 2003
@@ -19,7 +19,6 @@
hid-objs := hid-core.o
pwc-objs := pwc-if.o pwc-misc.o pwc-ctrl.o pwc-uncompress.o
auerswald-objs := auerbuf.o auerchain.o auerchar.o auermain.o
-speedtch-objs := speedcrc.o speedtouch.o
# Optional parts of multipart objects.
@@ -150,6 +149,3 @@
auerswald.o: $(auerswald-objs)
$(LD) -r -o $@ $(auerswald-objs)
-
-speedtch.o: $(speedtch-objs)
- $(LD) -r -o $@ $(speedtch-objs)
diff -Nru a/drivers/usb/Makefile.lib b/drivers/usb/Makefile.lib
--- a/drivers/usb/Makefile.lib Fri Jun 27 16:27:13 2003
+++ b/drivers/usb/Makefile.lib Fri Jun 27 16:27:13 2003
@@ -1,3 +1,4 @@
obj-$(CONFIG_USB_USBNET) += crc32.o
obj-$(CONFIG_USB_CATC) += crc32.o
+obj-$(CONFIG_USB_SPEEDTOUCH) += crc32.o
diff -Nru a/drivers/usb/speedcrc.c b/drivers/usb/speedcrc.c
--- a/drivers/usb/speedcrc.c Fri Jun 27 16:27:13 2003
+++ /dev/null Wed Dec 31 16:00:00 1969
@@ -1,124 +0,0 @@
-/******************************************************************************
- * speedcrc.c -- CRC library for use with speedtouch.
- *
- * Copyright (C) 2000, Johan Verrept
- *
- * 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.
- *
- ******************************************************************************/
-
-#include <stddef.h>
-
-/*
- * CRC Routines from net/wan/sbni.c)
- * table generated by Rocksoft^tm Model CRC Algorithm Table Generation Program V1.0
- */
-#define CRC32_REMAINDER CBF43926
-#define CRC32_INITIAL 0xffffffff
-unsigned long crc32tab[256] = {
- 0x00000000L, 0x04C11DB7L, 0x09823B6EL, 0x0D4326D9L,
- 0x130476DCL, 0x17C56B6BL, 0x1A864DB2L, 0x1E475005L,
- 0x2608EDB8L, 0x22C9F00FL, 0x2F8AD6D6L, 0x2B4BCB61L,
- 0x350C9B64L, 0x31CD86D3L, 0x3C8EA00AL, 0x384FBDBDL,
- 0x4C11DB70L, 0x48D0C6C7L, 0x4593E01EL, 0x4152FDA9L,
- 0x5F15ADACL, 0x5BD4B01BL, 0x569796C2L, 0x52568B75L,
- 0x6A1936C8L, 0x6ED82B7FL, 0x639B0DA6L, 0x675A1011L,
- 0x791D4014L, 0x7DDC5DA3L, 0x709F7B7AL, 0x745E66CDL,
- 0x9823B6E0L, 0x9CE2AB57L, 0x91A18D8EL, 0x95609039L,
- 0x8B27C03CL, 0x8FE6DD8BL, 0x82A5FB52L, 0x8664E6E5L,
- 0xBE2B5B58L, 0xBAEA46EFL, 0xB7A96036L, 0xB3687D81L,
- 0xAD2F2D84L, 0xA9EE3033L, 0xA4AD16EAL, 0xA06C0B5DL,
- 0xD4326D90L, 0xD0F37027L, 0xDDB056FEL, 0xD9714B49L,
- 0xC7361B4CL, 0xC3F706FBL, 0xCEB42022L, 0xCA753D95L,
- 0xF23A8028L, 0xF6FB9D9FL, 0xFBB8BB46L, 0xFF79A6F1L,
- 0xE13EF6F4L, 0xE5FFEB43L, 0xE8BCCD9AL, 0xEC7DD02DL,
- 0x34867077L, 0x30476DC0L, 0x3D044B19L, 0x39C556AEL,
- 0x278206ABL, 0x23431B1CL, 0x2E003DC5L, 0x2AC12072L,
- 0x128E9DCFL, 0x164F8078L, 0x1B0CA6A1L, 0x1FCDBB16L,
- 0x018AEB13L, 0x054BF6A4L, 0x0808D07DL, 0x0CC9CDCAL,
- 0x7897AB07L, 0x7C56B6B0L, 0x71159069L, 0x75D48DDEL,
- 0x6B93DDDBL, 0x6F52C06CL, 0x6211E6B5L, 0x66D0FB02L,
- 0x5E9F46BFL, 0x5A5E5B08L, 0x571D7DD1L, 0x53DC6066L,
- 0x4D9B3063L, 0x495A2DD4L, 0x44190B0DL, 0x40D816BAL,
- 0xACA5C697L, 0xA864DB20L, 0xA527FDF9L, 0xA1E6E04EL,
- 0xBFA1B04BL, 0xBB60ADFCL, 0xB6238B25L, 0xB2E29692L,
- 0x8AAD2B2FL, 0x8E6C3698L, 0x832F1041L, 0x87EE0DF6L,
- 0x99A95DF3L, 0x9D684044L, 0x902B669DL, 0x94EA7B2AL,
- 0xE0B41DE7L, 0xE4750050L, 0xE9362689L, 0xEDF73B3EL,
- 0xF3B06B3BL, 0xF771768CL, 0xFA325055L, 0xFEF34DE2L,
- 0xC6BCF05FL, 0xC27DEDE8L, 0xCF3ECB31L, 0xCBFFD686L,
- 0xD5B88683L, 0xD1799B34L, 0xDC3ABDEDL, 0xD8FBA05AL,
- 0x690CE0EEL, 0x6DCDFD59L, 0x608EDB80L, 0x644FC637L,
- 0x7A089632L, 0x7EC98B85L, 0x738AAD5CL, 0x774BB0EBL,
- 0x4F040D56L, 0x4BC510E1L, 0x46863638L, 0x42472B8FL,
- 0x5C007B8AL, 0x58C1663DL, 0x558240E4L, 0x51435D53L,
- 0x251D3B9EL, 0x21DC2629L, 0x2C9F00F0L, 0x285E1D47L,
- 0x36194D42L, 0x32D850F5L, 0x3F9B762CL, 0x3B5A6B9BL,
- 0x0315D626L, 0x07D4CB91L, 0x0A97ED48L, 0x0E56F0FFL,
- 0x1011A0FAL, 0x14D0BD4DL, 0x19939B94L, 0x1D528623L,
- 0xF12F560EL, 0xF5EE4BB9L, 0xF8AD6D60L, 0xFC6C70D7L,
- 0xE22B20D2L, 0xE6EA3D65L, 0xEBA91BBCL, 0xEF68060BL,
- 0xD727BBB6L, 0xD3E6A601L, 0xDEA580D8L, 0xDA649D6FL,
- 0xC423CD6AL, 0xC0E2D0DDL, 0xCDA1F604L, 0xC960EBB3L,
- 0xBD3E8D7EL, 0xB9FF90C9L, 0xB4BCB610L, 0xB07DABA7L,
- 0xAE3AFBA2L, 0xAAFBE615L, 0xA7B8C0CCL, 0xA379DD7BL,
- 0x9B3660C6L, 0x9FF77D71L, 0x92B45BA8L, 0x9675461FL,
- 0x8832161AL, 0x8CF30BADL, 0x81B02D74L, 0x857130C3L,
- 0x5D8A9099L, 0x594B8D2EL, 0x5408ABF7L, 0x50C9B640L,
- 0x4E8EE645L, 0x4A4FFBF2L, 0x470CDD2BL, 0x43CDC09CL,
- 0x7B827D21L, 0x7F436096L, 0x7200464FL, 0x76C15BF8L,
- 0x68860BFDL, 0x6C47164AL, 0x61043093L, 0x65C52D24L,
- 0x119B4BE9L, 0x155A565EL, 0x18197087L, 0x1CD86D30L,
- 0x029F3D35L, 0x065E2082L, 0x0B1D065BL, 0x0FDC1BECL,
- 0x3793A651L, 0x3352BBE6L, 0x3E119D3FL, 0x3AD08088L,
- 0x2497D08DL, 0x2056CD3AL, 0x2D15EBE3L, 0x29D4F654L,
- 0xC5A92679L, 0xC1683BCEL, 0xCC2B1D17L, 0xC8EA00A0L,
- 0xD6AD50A5L, 0xD26C4D12L, 0xDF2F6BCBL, 0xDBEE767CL,
- 0xE3A1CBC1L, 0xE760D676L, 0xEA23F0AFL, 0xEEE2ED18L,
- 0xF0A5BD1DL, 0xF464A0AAL, 0xF9278673L, 0xFDE69BC4L,
- 0x89B8FD09L, 0x8D79E0BEL, 0x803AC667L, 0x84FBDBD0L,
- 0x9ABC8BD5L, 0x9E7D9662L, 0x933EB0BBL, 0x97FFAD0CL,
- 0xAFB010B1L, 0xAB710D06L, 0xA6322BDFL, 0xA2F33668L,
- 0xBCB4666DL, 0xB8757BDAL, 0xB5365D03L, 0xB1F740B4L
-};
-
-#ifdef CRCASM
-
-unsigned long spdcrc32 (char *mem, int len, unsigned initial)
-{
- unsigned crc, dummy_len;
- __asm__ ("xorl %%eax,%%eax\n\t" "1:\n\t" "movl %%edx,%%eax\n\t" "shrl
$16,%%eax\n\t" "lodsb\n\t" "xorb %%ah,%%al\n\t" "andl $255,%%eax\n\t" "shll
$8,%%edx\n\t" "xorl (%%edi,%%eax,4),%%edx\n\t" "loop 1b":"=d" (crc),
- "=c"
- (dummy_len)
- : "S" (mem), "D" (&crc32tab[0]), "1" (len), "0" (initial)
- : "eax");
- return crc;
-}
-
-#else
-
-#define CRC32(c,crc) (crc32tab[((size_t)(crc>>24) ^ (c)) & 0xff] ^ (((crc) << 8)))
-
-unsigned long spdcrc32 (char *mem, int len, unsigned initial)
-{
- unsigned crc;
- crc = initial;
-
- for (; len; mem++, len--) {
- crc = CRC32 (*mem, crc);
- }
- return (crc);
-}
-#endif
diff -Nru a/drivers/usb/speedcrc.h b/drivers/usb/speedcrc.h
--- a/drivers/usb/speedcrc.h Fri Jun 27 16:27:13 2003
+++ /dev/null Wed Dec 31 16:00:00 1969
@@ -1,28 +0,0 @@
-#ifndef _SPEEDCRC_H_
-#define _SPEEDCRC_H_
-
-/******************************************************************************
- * speedcrc.h -- CRC library for use with speedtouch.
- *
- * Copyright (C) 2000, Johan Verrept
- *
- * 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.
- *
- ******************************************************************************/
-
-unsigned long spdcrc32 (char *mem, int len, unsigned initial);
-#define crc32_be(crc, mem, len) spdcrc32(mem, len, crc)
-
-#endif /* _SPEEDCRC_H_ */
diff -Nru a/drivers/usb/speedtch.c b/drivers/usb/speedtch.c
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/usb/speedtch.c Fri Jun 27 16:27:13 2003
@@ -0,0 +1,1344 @@
+/******************************************************************************
+ * speedtouch.c - Alcatel SpeedTouch USB xDSL modem driver
+ *
+ * Copyright (C) 2001, Alcatel
+ * Copyright (C) 2003, Duncan Sands
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+/*
+ * Written by Johan Verrept, maintained by Duncan Sands ([EMAIL PROTECTED])
+ *
+ * 1.6: - No longer opens a connection if the firmware is not loaded
+ * - Added support for the speedtouch 330
+ * - Removed the limit on the number of devices
+ * - Module now autoloads on device plugin
+ * - Merged relevant parts of sarlib
+ * - Replaced the kernel thread with a tasklet
+ * - New packet transmission code
+ * - Changed proc file contents
+ * - Fixed all known SMP races
+ * - Many fixes and cleanups
+ * - Various fixes by Oliver Neukum ([EMAIL PROTECTED])
+ *
+ * 1.5A: - Backport of version for inclusion in 2.5 series kernel
+ * - Modifications by Richard Purdie ([EMAIL PROTECTED])
+ * - made compatible with kernel 2.5.6 onwards by changing
+ * udsl_usb_send_data_context->urb to a pointer and adding code
+ * to alloc and free it
+ * - remove_wait_queue() added to udsl_atm_processqueue_thread()
+ *
+ * 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL.
+ * (reported by [EMAIL PROTECTED])
+ *
+ * 1.4: - changed the spin_lock() under interrupt to spin_lock_irqsave()
+ * - unlink all active send urbs of a vcc that is being closed.
+ *
+ * 1.3.1: - added the version number
+ *
+ * 1.3: - Added multiple send urb support
+ * - fixed memory leak and vcc->tx_inuse starvation bug
+ * when not enough memory left in vcc.
+ *
+ * 1.2: - Fixed race condition in udsl_usb_send_data()
+ * 1.1: - Turned off packet debugging
+ *
+ */
+
+#include <asm/semaphore.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <asm/uaccess.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/crc32.h>
+#include <linux/init.h>
+
+/*
+#define DEBUG
+#define VERBOSE_DEBUG
+*/
+
+#include <linux/usb.h>
+
+
+#ifdef VERBOSE_DEBUG
+static int udsl_print_packet (const unsigned char *data, int len);
+#define PACKETDEBUG(arg...) udsl_print_packet (arg)
+#define vdbg(arg...) dbg (arg)
+#else
+#define PACKETDEBUG(arg...)
+#define vdbg(arg...)
+#endif
+
+#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <[EMAIL PROTECTED]>"
+#define DRIVER_DESC "Alcatel SpeedTouch USB driver"
+#define DRIVER_VERSION "1.6"
+
+static const char udsl_driver_name [] = "speedtch";
+
+#define SPEEDTOUCH_VENDORID 0x06b9
+#define SPEEDTOUCH_PRODUCTID 0x4061
+
+#define UDSL_MAX_RCV_URBS 4
+#define UDSL_MAX_SND_URBS 4
+#define UDSL_MAX_RCV_BUFS 8
+#define UDSL_MAX_SND_BUFS 8
+#define UDSL_MAX_RCV_BUF_SIZE 1024 /* ATM cells */
+#define UDSL_MAX_SND_BUF_SIZE 1024 /* ATM cells */
+#define UDSL_DEFAULT_RCV_URBS 1
+#define UDSL_DEFAULT_SND_URBS 1
+#define UDSL_DEFAULT_RCV_BUFS 2
+#define UDSL_DEFAULT_SND_BUFS 2
+#define UDSL_DEFAULT_RCV_BUF_SIZE 64 /* ATM cells */
+#define UDSL_DEFAULT_SND_BUF_SIZE 64 /* ATM cells */
+
+static unsigned int num_rcv_urbs = UDSL_DEFAULT_RCV_URBS;
+static unsigned int num_snd_urbs = UDSL_DEFAULT_SND_URBS;
+static unsigned int num_rcv_bufs = UDSL_DEFAULT_RCV_BUFS;
+static unsigned int num_snd_bufs = UDSL_DEFAULT_SND_BUFS;
+static unsigned int rcv_buf_size = UDSL_DEFAULT_RCV_BUF_SIZE;
+static unsigned int snd_buf_size = UDSL_DEFAULT_SND_BUF_SIZE;
+
+MODULE_PARM (num_rcv_urbs, "i");
+MODULE_PARM_DESC (num_rcv_urbs, "Number of urbs used for reception (range: 0-"
__MODULE_STRING (UDSL_MAX_RCV_URBS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_RCV_URBS) ")");
+
+MODULE_PARM (num_snd_urbs, "i");
+MODULE_PARM_DESC (num_snd_urbs, "Number of urbs used for transmission (range: 0-"
__MODULE_STRING (UDSL_MAX_SND_URBS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_SND_URBS) ")");
+
+MODULE_PARM (num_rcv_bufs, "i");
+MODULE_PARM_DESC (num_rcv_bufs, "Number of buffers used for reception (range: 0-"
__MODULE_STRING (UDSL_MAX_RCV_BUFS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_RCV_BUFS) ")");
+
+MODULE_PARM (num_snd_bufs, "i");
+MODULE_PARM_DESC (num_snd_bufs, "Number of buffers used for transmission (range: 0-"
__MODULE_STRING (UDSL_MAX_SND_BUFS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_SND_BUFS) ")");
+
+MODULE_PARM (rcv_buf_size, "i");
+MODULE_PARM_DESC (rcv_buf_size, "Size of the buffers used for reception (range: 0-"
__MODULE_STRING (UDSL_MAX_RCV_BUF_SIZE) ", default: " __MODULE_STRING
(UDSL_DEFAULT_RCV_BUF_SIZE) ")");
+
+MODULE_PARM (snd_buf_size, "i");
+MODULE_PARM_DESC (snd_buf_size, "Size of the buffers used for transmission (range:
0-" __MODULE_STRING (UDSL_MAX_SND_BUF_SIZE) ", default: " __MODULE_STRING
(UDSL_DEFAULT_SND_BUF_SIZE) ")");
+
+#define UDSL_IOCTL_LINE_UP 1
+#define UDSL_IOCTL_LINE_DOWN 2
+
+#define UDSL_ENDPOINT_DATA_OUT 0x07
+#define UDSL_ENDPOINT_DATA_IN 0x87
+
+#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)
+#define UDSL_NUM_CELLS(x) (((x) + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD -
1) / ATM_CELL_PAYLOAD)
+
+#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
+
+static struct usb_device_id udsl_usb_ids [] = {
+ { USB_DEVICE (SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID) },
+ { }
+};
+
+MODULE_DEVICE_TABLE (usb, udsl_usb_ids);
+
+/* receive */
+
+struct udsl_receive_buffer {
+ struct list_head list;
+ unsigned char *base;
+ unsigned int filled_cells;
+};
+
+struct udsl_receiver {
+ struct list_head list;
+ struct udsl_receive_buffer *buffer;
+ struct urb *urb;
+ struct udsl_instance_data *instance;
+};
+
+struct udsl_vcc_data {
+ /* vpi/vci lookup */
+ struct list_head list;
+ short vpi;
+ int vci;
+ struct atm_vcc *vcc;
+
+ /* raw cell reassembly */
+ struct sk_buff *skb;
+ unsigned int max_pdu;
+};
+
+/* send */
+
+struct udsl_send_buffer {
+ struct list_head list;
+ unsigned char *base;
+ unsigned char *free_start;
+ unsigned int free_cells;
+};
+
+struct udsl_sender {
+ struct list_head list;
+ struct udsl_send_buffer *buffer;
+ struct urb *urb;
+ struct udsl_instance_data *instance;
+};
+
+struct udsl_control {
+ struct atm_skb_data atm_data;
+ unsigned int num_cells;
+ unsigned int num_entire;
+ unsigned int pdu_padding;
+ unsigned char cell_header [ATM_CELL_HEADER];
+ unsigned char aal5_trailer [ATM_AAL5_TRAILER];
+};
+
+#define UDSL_SKB(x) ((struct udsl_control *)(x)->cb)
+
+/* main driver data */
+
+struct udsl_instance_data {
+ struct semaphore serialize;
+
+ /* USB device part */
+ struct usb_device *usb_dev;
+ char description [64];
+ int firmware_loaded;
+
+ /* ATM device part */
+ struct atm_dev *atm_dev;
+ struct list_head vcc_list;
+
+ /* receive */
+ struct udsl_receiver receivers [UDSL_MAX_RCV_URBS];
+ struct udsl_receive_buffer receive_buffers [UDSL_MAX_RCV_BUFS];
+
+ spinlock_t receive_lock;
+ struct list_head spare_receivers;
+ struct list_head filled_receive_buffers;
+
+ struct tasklet_struct receive_tasklet;
+ struct list_head spare_receive_buffers;
+
+ /* send */
+ struct udsl_sender senders [UDSL_MAX_SND_URBS];
+ struct udsl_send_buffer send_buffers [UDSL_MAX_SND_BUFS];
+
+ struct sk_buff_head sndqueue;
+
+ spinlock_t send_lock;
+ struct list_head spare_senders;
+ struct list_head spare_send_buffers;
+
+ struct tasklet_struct send_tasklet;
+ struct sk_buff *current_skb; /* being emptied */
+ struct udsl_send_buffer *current_buffer; /* being filled */
+ struct list_head filled_send_buffers;
+};
+
+/* ATM */
+
+static void udsl_atm_dev_close (struct atm_dev *dev);
+static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci);
+static void udsl_atm_close (struct atm_vcc *vcc);
+static int udsl_atm_ioctl (struct atm_dev *dev, unsigned int cmd, void *arg);
+static int udsl_atm_send (struct atm_vcc *vcc, struct sk_buff *skb);
+static int udsl_atm_proc_read (struct atm_dev *atm_dev, loff_t *pos, char *page);
+
+static struct atmdev_ops udsl_atm_devops = {
+ dev_close: udsl_atm_dev_close,
+ open: udsl_atm_open,
+ close: udsl_atm_close,
+ ioctl: udsl_atm_ioctl,
+ send: udsl_atm_send,
+ proc_read: udsl_atm_proc_read,
+ owner: THIS_MODULE,
+};
+
+/* USB */
+
+static void *udsl_usb_probe (struct usb_device *dev, unsigned int ifnum, const struct
usb_device_id *id);
+static void udsl_usb_disconnect (struct usb_device *dev, void *ptr);
+static int udsl_usb_ioctl (struct usb_device *hub, unsigned int code, void
*user_data);
+
+static struct usb_driver udsl_usb_driver = {
+ owner: THIS_MODULE,
+ name: udsl_driver_name,
+ probe: udsl_usb_probe,
+ disconnect: udsl_usb_disconnect,
+ ioctl: udsl_usb_ioctl,
+ id_table: udsl_usb_ids,
+};
+
+
+/*************
+** decode **
+*************/
+
+static inline struct udsl_vcc_data *udsl_find_vcc (struct udsl_instance_data
*instance, short vpi, int vci)
+{
+ struct udsl_vcc_data *vcc;
+
+ list_for_each_entry (vcc, &instance->vcc_list, list)
+ if ((vcc->vci == vci) && (vcc->vpi == vpi))
+ return vcc;
+ return NULL;
+}
+
+static void udsl_extract_cells (struct udsl_instance_data *instance, unsigned char
*source, unsigned int howmany)
+{
+ struct udsl_vcc_data *cached_vcc = NULL;
+ struct atm_vcc *vcc;
+ struct sk_buff *skb;
+ struct udsl_vcc_data *vcc_data;
+ int cached_vci = 0;
+ unsigned int i;
+ unsigned int length;
+ unsigned int pdu_length;
+ int pti;
+ int vci;
+ short cached_vpi = 0;
+ short vpi;
+
+ for (i = 0; i < howmany; i++, source += ATM_CELL_SIZE) {
+ vpi = ((source [0] & 0x0f) << 4) | (source [1] >> 4);
+ vci = ((source [1] & 0x0f) << 12) | (source [2] << 4) | (source [3] >>
4);
+ pti = (source [3] & 0x2) != 0;
+
+ vdbg ("udsl_extract_cells: vpi %hd, vci %d, pti %d", vpi, vci, pti);
+
+ if (cached_vcc && (vci == cached_vci) && (vpi == cached_vpi))
+ vcc_data = cached_vcc;
+ else if ((vcc_data = udsl_find_vcc (instance, vpi, vci))) {
+ cached_vcc = vcc_data;
+ cached_vpi = vpi;
+ cached_vci = vci;
+ } else {
+ dbg ("udsl_extract_cells: unknown vpi/vci (%hd/%d)!", vpi,
vci);
+ continue;
+ }
+
+ vcc = vcc_data->vcc;
+
+ if (!vcc_data->skb && !(vcc_data->skb = dev_alloc_skb
(vcc_data->max_pdu))) {
+ dbg ("udsl_extract_cells: no memory for skb (vcc: 0x%p)!",
vcc);
+ if (pti)
+ atomic_inc (&vcc->stats->rx_err);
+ continue;
+ }
+
+ skb = vcc_data->skb;
+
+ if (skb->len + ATM_CELL_PAYLOAD > vcc_data->max_pdu) {
+ dbg ("udsl_extract_cells: buffer overrun (max_pdu: %u,
skb->len %u, vcc: 0x%p)", vcc_data->max_pdu, skb->len, vcc);
+ /* discard cells already received */
+ skb_trim (skb, 0);
+ BUG_ON (vcc_data->max_pdu < ATM_CELL_PAYLOAD);
+ }
+
+ memcpy (skb->tail, source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
+ __skb_put (skb, ATM_CELL_PAYLOAD);
+
+ if (pti) {
+ length = (source [ATM_CELL_SIZE - 6] << 8) + source
[ATM_CELL_SIZE - 5];
+
+ /* guard against overflow */
+ if (length > ATM_MAX_AAL5_PDU) {
+ dbg ("udsl_extract_cells: bogus length %u (vcc:
0x%p)", length, vcc);
+ goto drop;
+ }
+
+ pdu_length = UDSL_NUM_CELLS (length) * ATM_CELL_PAYLOAD;
+
+ if (skb->len < pdu_length) {
+ dbg ("udsl_extract_cells: bogus pdu_length %u
(skb->len: %u, vcc: 0x%p)", pdu_length, skb->len, vcc);
+ goto drop;
+ }
+
+ if (crc32_be (~0, skb->tail - pdu_length, pdu_length) !=
0xc704dd7b) {
+ dbg ("udsl_extract_cells: packet failed crc check
(vcc: 0x%p)", vcc);
+ goto drop;
+ }
+
+ if (!atm_charge (vcc, skb->truesize)) {
+ dbg ("udsl_extract_cells: failed atm_charge
(skb->truesize: %u)", skb->truesize);
+ goto drop_no_stats; /* atm_charge increments rx_drop */
+ }
+
+ /* now that we are sure to send the skb, it is ok to change
skb->data */
+ if (skb->len > pdu_length)
+ skb_pull (skb, skb->len - pdu_length); /* discard
initial junk */
+
+ skb_trim (skb, length); /* drop zero padding and trailer */
+
+ atomic_inc (&vcc->stats->rx);
+
+ PACKETDEBUG (skb->data, skb->len);
+
+ vdbg ("udsl_extract_cells: sending skb 0x%p, skb->len %u,
skb->truesize %u", skb, skb->len, skb->truesize);
+
+ vcc->push (vcc, skb);
+
+ vcc_data->skb = NULL;
+
+ continue;
+
+drop:
+ atomic_inc (&vcc->stats->rx_err);
+drop_no_stats:
+ skb_trim (skb, 0);
+ }
+ }
+}
+
+
+/*************
+** encode **
+*************/
+
+static const unsigned char zeros [ATM_CELL_PAYLOAD];
+
+static void udsl_groom_skb (struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct udsl_control *ctrl = UDSL_SKB (skb);
+ unsigned int zero_padding;
+ u32 crc;
+
+ ctrl->atm_data.vcc = vcc;
+ ctrl->cell_header [0] = vcc->vpi >> 4;
+ ctrl->cell_header [1] = (vcc->vpi << 4) | (vcc->vci >> 12);
+ ctrl->cell_header [2] = vcc->vci >> 4;
+ ctrl->cell_header [3] = vcc->vci << 4;
+ ctrl->cell_header [4] = 0xec;
+
+ ctrl->num_cells = UDSL_NUM_CELLS (skb->len);
+ ctrl->num_entire = skb->len / ATM_CELL_PAYLOAD;
+
+ zero_padding = ctrl->num_cells * ATM_CELL_PAYLOAD - skb->len -
ATM_AAL5_TRAILER;
+
+ if (ctrl->num_entire + 1 < ctrl->num_cells)
+ ctrl->pdu_padding = zero_padding - (ATM_CELL_PAYLOAD -
ATM_AAL5_TRAILER);
+ else
+ ctrl->pdu_padding = zero_padding;
+
+ ctrl->aal5_trailer [0] = 0; /* UU = 0 */
+ ctrl->aal5_trailer [1] = 0; /* CPI = 0 */
+ ctrl->aal5_trailer [2] = skb->len >> 8;
+ ctrl->aal5_trailer [3] = skb->len;
+
+ crc = crc32_be (~0, skb->data, skb->len);
+ crc = crc32_be (crc, zeros, zero_padding);
+ crc = crc32_be (crc, ctrl->aal5_trailer, 4);
+ crc = ~crc;
+
+ ctrl->aal5_trailer [4] = crc >> 24;
+ ctrl->aal5_trailer [5] = crc >> 16;
+ ctrl->aal5_trailer [6] = crc >> 8;
+ ctrl->aal5_trailer [7] = crc;
+}
+
+static unsigned int udsl_write_cells (unsigned int howmany, struct sk_buff *skb,
unsigned char **target_p)
+{
+ struct udsl_control *ctrl = UDSL_SKB (skb);
+ unsigned char *target = *target_p;
+ unsigned int nc, ne, i;
+
+ vdbg ("udsl_write_cells: howmany=%u, skb->len=%d, num_cells=%u, num_entire=%u,
pdu_padding=%u", howmany, skb->len, ctrl->num_cells, ctrl->num_entire,
ctrl->pdu_padding);
+
+ nc = ctrl->num_cells;
+ ne = min (howmany, ctrl->num_entire);
+
+ for (i = 0; i < ne; i++) {
+ memcpy (target, ctrl->cell_header, ATM_CELL_HEADER);
+ target += ATM_CELL_HEADER;
+ memcpy (target, skb->data, ATM_CELL_PAYLOAD);
+ target += ATM_CELL_PAYLOAD;
+ __skb_pull (skb, ATM_CELL_PAYLOAD);
+ }
+
+ ctrl->num_entire -= ne;
+
+ if (!(ctrl->num_cells -= ne) || !(howmany -= ne))
+ goto out;
+
+ memcpy (target, ctrl->cell_header, ATM_CELL_HEADER);
+ target += ATM_CELL_HEADER;
+ memcpy (target, skb->data, skb->len);
+ target += skb->len;
+ __skb_pull (skb, skb->len);
+ memset (target, 0, ctrl->pdu_padding);
+ target += ctrl->pdu_padding;
+
+ if (--ctrl->num_cells) {
+ if (!--howmany) {
+ ctrl->pdu_padding = ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
+ goto out;
+ }
+
+ memcpy (target, ctrl->cell_header, ATM_CELL_HEADER);
+ target += ATM_CELL_HEADER;
+ memset (target, 0, ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER);
+ target += ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
+
+ BUG_ON (--ctrl->num_cells);
+ }
+
+ memcpy (target, ctrl->aal5_trailer, ATM_AAL5_TRAILER);
+ target += ATM_AAL5_TRAILER;
+ /* set pti bit in last cell */
+ *(target + 3 - ATM_CELL_SIZE) |= 0x2;
+
+out:
+ *target_p = target;
+ return nc - ctrl->num_cells;
+}
+
+
+/**************
+** receive **
+**************/
+
+static void udsl_complete_receive (struct urb *urb)
+{
+ struct udsl_receive_buffer *buf;
+ struct udsl_instance_data *instance;
+ struct udsl_receiver *rcv;
+ unsigned long flags;
+
+ if (!urb || !(rcv = urb->context)) {
+ dbg ("udsl_complete_receive: bad urb!");
+ return;
+ }
+
+ instance = rcv->instance;
+ buf = rcv->buffer;
+
+ buf->filled_cells = urb->actual_length / ATM_CELL_SIZE;
+
+ vdbg ("udsl_complete_receive: urb 0x%p, status %d, actual_length %d,
filled_cells %u, rcv 0x%p, buf 0x%p", urb, urb->status, urb->actual_length,
buf->filled_cells, rcv, buf);
+
+ BUG_ON (buf->filled_cells > rcv_buf_size);
+
+ /* may not be in_interrupt() */
+ spin_lock_irqsave (&instance->receive_lock, flags);
+ list_add (&rcv->list, &instance->spare_receivers);
+ list_add_tail (&buf->list, &instance->filled_receive_buffers);
+ if (likely (!urb->status))
+ tasklet_schedule (&instance->receive_tasklet);
+ spin_unlock_irqrestore (&instance->receive_lock, flags);
+}
+
+static void udsl_process_receive (unsigned long data)
+{
+ struct udsl_receive_buffer *buf;
+ struct udsl_instance_data *instance = (struct udsl_instance_data *) data;
+ struct udsl_receiver *rcv;
+ int err;
+
+made_progress:
+ while (!list_empty (&instance->spare_receive_buffers)) {
+ spin_lock_irq (&instance->receive_lock);
+ if (list_empty (&instance->spare_receivers)) {
+ spin_unlock_irq (&instance->receive_lock);
+ break;
+ }
+ rcv = list_entry (instance->spare_receivers.next, struct
udsl_receiver, list);
+ list_del (&rcv->list);
+ spin_unlock_irq (&instance->receive_lock);
+
+ buf = list_entry (instance->spare_receive_buffers.next, struct
udsl_receive_buffer, list);
+ list_del (&buf->list);
+
+ rcv->buffer = buf;
+
+ FILL_BULK_URB (rcv->urb,
+ instance->usb_dev,
+ usb_rcvbulkpipe (instance->usb_dev,
UDSL_ENDPOINT_DATA_IN),
+ buf->base,
+ rcv_buf_size * ATM_CELL_SIZE,
+ udsl_complete_receive,
+ rcv);
+ rcv->urb->transfer_flags |= USB_QUEUE_BULK;
+
+ vdbg ("udsl_process_receive: sending urb 0x%p, rcv 0x%p, buf 0x%p",
rcv->urb, rcv, buf);
+
+ if ((err = usb_submit_urb(rcv->urb)) < 0) {
+ dbg ("udsl_process_receive: urb submission failed (%d)!", err);
+ list_add (&buf->list, &instance->spare_receive_buffers);
+ spin_lock_irq (&instance->receive_lock);
+ list_add (&rcv->list, &instance->spare_receivers);
+ spin_unlock_irq (&instance->receive_lock);
+ break;
+ }
+ }
+
+ spin_lock_irq (&instance->receive_lock);
+ if (list_empty (&instance->filled_receive_buffers)) {
+ spin_unlock_irq (&instance->receive_lock);
+ return; /* done - no more buffers */
+ }
+ buf = list_entry (instance->filled_receive_buffers.next, struct
udsl_receive_buffer, list);
+ list_del (&buf->list);
+ spin_unlock_irq (&instance->receive_lock);
+ vdbg ("udsl_process_receive: processing buf 0x%p", buf);
+ udsl_extract_cells (instance, buf->base, buf->filled_cells);
+ list_add (&buf->list, &instance->spare_receive_buffers);
+ goto made_progress;
+}
+
+
+/***********
+** send **
+***********/
+
+static void udsl_complete_send (struct urb *urb)
+{
+ struct udsl_instance_data *instance;
+ struct udsl_sender *snd;
+ unsigned long flags;
+
+ if (!urb || !(snd = urb->context) || !(instance = snd->instance)) {
+ dbg ("udsl_complete_send: bad urb!");
+ return;
+ }
+
+ vdbg ("udsl_complete_send: urb 0x%p, status %d, snd 0x%p, buf 0x%p", urb,
urb->status, snd, snd->buffer);
+
+ /* may not be in_interrupt() */
+ spin_lock_irqsave (&instance->send_lock, flags);
+ list_add (&snd->list, &instance->spare_senders);
+ list_add (&snd->buffer->list, &instance->spare_send_buffers);
+ tasklet_schedule (&instance->send_tasklet);
+ spin_unlock_irqrestore (&instance->send_lock, flags);
+}
+
+static void udsl_process_send (unsigned long data)
+{
+ struct udsl_send_buffer *buf;
+ struct udsl_instance_data *instance = (struct udsl_instance_data *) data;
+ struct sk_buff *skb;
+ struct udsl_sender *snd;
+ int err;
+ unsigned int num_written;
+
+made_progress:
+ spin_lock_irq (&instance->send_lock);
+ while (!list_empty (&instance->spare_senders)) {
+ if (!list_empty (&instance->filled_send_buffers)) {
+ buf = list_entry (instance->filled_send_buffers.next, struct
udsl_send_buffer, list);
+ list_del (&buf->list);
+ } else if ((buf = instance->current_buffer)) {
+ instance->current_buffer = NULL;
+ } else /* all buffers empty */
+ break;
+
+ snd = list_entry (instance->spare_senders.next, struct udsl_sender,
list);
+ list_del (&snd->list);
+ spin_unlock_irq (&instance->send_lock);
+
+ snd->buffer = buf;
+ FILL_BULK_URB (snd->urb,
+ instance->usb_dev,
+ usb_sndbulkpipe (instance->usb_dev,
UDSL_ENDPOINT_DATA_OUT),
+ buf->base,
+ (snd_buf_size - buf->free_cells) * ATM_CELL_SIZE,
+ udsl_complete_send,
+ snd);
+ snd->urb->transfer_flags |= USB_QUEUE_BULK;
+
+ vdbg ("udsl_process_send: submitting urb 0x%p (%d cells), snd 0x%p,
buf 0x%p", snd->urb, snd_buf_size - buf->free_cells, snd, buf);
+
+ if ((err = usb_submit_urb(snd->urb)) < 0) {
+ dbg ("udsl_process_send: urb submission failed (%d)!", err);
+ spin_lock_irq (&instance->send_lock);
+ list_add (&snd->list, &instance->spare_senders);
+ spin_unlock_irq (&instance->send_lock);
+ list_add (&buf->list, &instance->filled_send_buffers);
+ return; /* bail out */
+ }
+
+ spin_lock_irq (&instance->send_lock);
+ } /* while */
+ spin_unlock_irq (&instance->send_lock);
+
+ if (!instance->current_skb && !(instance->current_skb = skb_dequeue
(&instance->sndqueue)))
+ return; /* done - no more skbs */
+
+ skb = instance->current_skb;
+
+ if (!(buf = instance->current_buffer)) {
+ spin_lock_irq (&instance->send_lock);
+ if (list_empty (&instance->spare_send_buffers)) {
+ instance->current_buffer = NULL;
+ spin_unlock_irq (&instance->send_lock);
+ return; /* done - no more buffers */
+ }
+ buf = list_entry (instance->spare_send_buffers.next, struct
udsl_send_buffer, list);
+ list_del (&buf->list);
+ spin_unlock_irq (&instance->send_lock);
+
+ buf->free_start = buf->base;
+ buf->free_cells = snd_buf_size;
+
+ instance->current_buffer = buf;
+ }
+
+ num_written = udsl_write_cells (buf->free_cells, skb, &buf->free_start);
+
+ vdbg ("udsl_process_send: wrote %u cells from skb 0x%p to buffer 0x%p",
num_written, skb, buf);
+
+ if (!(buf->free_cells -= num_written)) {
+ list_add_tail (&buf->list, &instance->filled_send_buffers);
+ instance->current_buffer = NULL;
+ }
+
+ vdbg ("udsl_process_send: buffer contains %d cells, %d left", snd_buf_size -
buf->free_cells, buf->free_cells);
+
+ if (!UDSL_SKB (skb)->num_cells) {
+ struct atm_vcc *vcc = UDSL_SKB (skb)->atm_data.vcc;
+
+ if (vcc->pop)
+ vcc->pop (vcc, skb);
+ else
+ dev_kfree_skb (skb);
+ instance->current_skb = NULL;
+
+ atomic_inc (&vcc->stats->tx);
+ }
+
+ goto made_progress;
+}
+
+static void udsl_cancel_send (struct udsl_instance_data *instance, struct atm_vcc
*vcc)
+{
+ struct sk_buff *skb, *n;
+
+ dbg ("udsl_cancel_send entered");
+ spin_lock_irq (&instance->sndqueue.lock);
+ for (skb = instance->sndqueue.next, n = skb->next; skb != (struct sk_buff
*)&instance->sndqueue; skb = n, n = skb->next)
+ if (UDSL_SKB (skb)->atm_data.vcc == vcc) {
+ dbg ("udsl_cancel_send: popping skb 0x%p", skb);
+ __skb_unlink (skb, &instance->sndqueue);
+ if (vcc->pop)
+ vcc->pop (vcc, skb);
+ else
+ dev_kfree_skb (skb);
+ }
+ spin_unlock_irq (&instance->sndqueue.lock);
+
+ tasklet_disable (&instance->send_tasklet);
+ if ((skb = instance->current_skb) && (UDSL_SKB (skb)->atm_data.vcc == vcc)) {
+ dbg ("udsl_cancel_send: popping current skb (0x%p)", skb);
+ instance->current_skb = NULL;
+ if (vcc->pop)
+ vcc->pop (vcc, skb);
+ else
+ dev_kfree_skb (skb);
+ }
+ tasklet_enable (&instance->send_tasklet);
+ dbg ("udsl_cancel_send done");
+}
+
+static int udsl_atm_send (struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct udsl_instance_data *instance = vcc->dev->dev_data;
+
+ vdbg ("udsl_atm_send called (skb 0x%p, len %u)", skb, skb->len);
+
+ if (!instance || !instance->usb_dev) {
+ dbg ("udsl_atm_send: NULL data!");
+ return -ENODEV;
+ }
+
+ if (vcc->qos.aal != ATM_AAL5) {
+ dbg ("udsl_atm_send: unsupported ATM type %d!", vcc->qos.aal);
+ return -EINVAL;
+ }
+
+ if (skb->len > ATM_MAX_AAL5_PDU) {
+ dbg ("udsl_atm_send: packet too long (%d vs %d)!", skb->len,
ATM_MAX_AAL5_PDU);
+ return -EINVAL;
+ }
+
+ PACKETDEBUG (skb->data, skb->len);
+
+ udsl_groom_skb (vcc, skb);
+ skb_queue_tail (&instance->sndqueue, skb);
+ tasklet_schedule (&instance->send_tasklet);
+
+ return 0;
+}
+
+
+/**********
+** ATM **
+**********/
+
+static void udsl_atm_dev_close (struct atm_dev *dev)
+{
+ struct udsl_instance_data *instance = dev->dev_data;
+
+ if (!instance) {
+ dbg ("udsl_atm_dev_close: NULL instance!");
+ return;
+ }
+
+ dbg ("udsl_atm_dev_close: queue has %u elements", instance->sndqueue.qlen);
+
+ tasklet_kill (&instance->receive_tasklet);
+ tasklet_kill (&instance->send_tasklet);
+ kfree (instance);
+ dev->dev_data = NULL;
+}
+
+static int udsl_atm_proc_read (struct atm_dev *atm_dev, loff_t *pos, char *page)
+{
+ struct udsl_instance_data *instance = atm_dev->dev_data;
+ int left = *pos;
+
+ if (!instance) {
+ dbg ("udsl_atm_proc_read: NULL instance!");
+ return -ENODEV;
+ }
+
+ if (!left--)
+ return sprintf (page, "%s\n", instance->description);
+
+ if (!left--)
+ return sprintf (page, "MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ atm_dev->esi [0], atm_dev->esi [1], atm_dev->esi [2],
+ atm_dev->esi [3], atm_dev->esi [4], atm_dev->esi [5]);
+
+ if (!left--)
+ return sprintf (page, "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop
)\n",
+ atomic_read (&atm_dev->stats.aal5.tx),
+ atomic_read (&atm_dev->stats.aal5.tx_err),
+ atomic_read (&atm_dev->stats.aal5.rx),
+ atomic_read (&atm_dev->stats.aal5.rx_err),
+ atomic_read (&atm_dev->stats.aal5.rx_drop));
+
+ if (!left--) {
+ switch (atm_dev->signal) {
+ case ATM_PHY_SIG_FOUND:
+ sprintf (page, "Line up");
+ break;
+ case ATM_PHY_SIG_LOST:
+ sprintf (page, "Line down");
+ break;
+ default:
+ sprintf (page, "Line state unknown");
+ break;
+ }
+
+ if (instance->usb_dev) {
+ if (!instance->firmware_loaded)
+ strcat (page, ", no firmware\n");
+ else
+ strcat (page, ", firmware loaded\n");
+ } else
+ strcat (page, ", disconnected\n");
+
+ return strlen (page);
+ }
+
+ return 0;
+}
+
+static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci)
+{
+ struct udsl_instance_data *instance = vcc->dev->dev_data;
+ struct udsl_vcc_data *new;
+
+ dbg ("udsl_atm_open: vpi %hd, vci %d", vpi, vci);
+
+ if (!instance || !instance->usb_dev) {
+ dbg ("udsl_atm_open: NULL data!");
+ return -ENODEV;
+ }
+
+ if ((vpi == ATM_VPI_ANY) || (vci == ATM_VCI_ANY))
+ return -EINVAL;
+
+ /* only support AAL5 */
+ if ((vcc->qos.aal != ATM_AAL5) || (vcc->qos.rxtp.max_sdu < 0) ||
(vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU))
+ return -EINVAL;
+
+ if (!instance->firmware_loaded) {
+ dbg ("udsl_atm_open: firmware not loaded!");
+ return -EAGAIN;
+ }
+
+ down (&instance->serialize); /* vs self, udsl_atm_close */
+
+ if (udsl_find_vcc (instance, vpi, vci)) {
+ up (&instance->serialize);
+ return -EADDRINUSE;
+ }
+
+ if (!(new = kmalloc (sizeof (struct udsl_vcc_data), GFP_KERNEL))) {
+ up (&instance->serialize);
+ return -ENOMEM;
+ }
+
+ memset (new, 0, sizeof (struct udsl_vcc_data));
+ new->vcc = vcc;
+ new->vpi = vpi;
+ new->vci = vci;
+ new->max_pdu = max (1, UDSL_NUM_CELLS (vcc->qos.rxtp.max_sdu)) *
ATM_CELL_PAYLOAD;
+
+ vcc->dev_data = new;
+ vcc->vpi = vpi;
+ vcc->vci = vci;
+
+ tasklet_disable (&instance->receive_tasklet);
+ list_add (&new->list, &instance->vcc_list);
+ tasklet_enable (&instance->receive_tasklet);
+
+ set_bit (ATM_VF_ADDR, &vcc->flags);
+ set_bit (ATM_VF_PARTIAL, &vcc->flags);
+ set_bit (ATM_VF_READY, &vcc->flags);
+
+ up (&instance->serialize);
+
+ tasklet_schedule (&instance->receive_tasklet);
+
+ dbg ("udsl_atm_open: allocated vcc data 0x%p (max_pdu: %u)", new,
new->max_pdu);
+
+ return 0;
+}
+
+static void udsl_atm_close (struct atm_vcc *vcc)
+{
+ struct udsl_instance_data *instance = vcc->dev->dev_data;
+ struct udsl_vcc_data *vcc_data = vcc->dev_data;
+
+ dbg ("udsl_atm_close called");
+
+ if (!instance || !vcc_data) {
+ dbg ("udsl_atm_close: NULL data!");
+ return;
+ }
+
+ dbg ("udsl_atm_close: deallocating vcc 0x%p with vpi %d vci %d", vcc_data,
vcc_data->vpi, vcc_data->vci);
+
+ udsl_cancel_send (instance, vcc);
+
+ down (&instance->serialize); /* vs self, udsl_atm_open */
+
+ tasklet_disable (&instance->receive_tasklet);
+ list_del (&vcc_data->list);
+ tasklet_enable (&instance->receive_tasklet);
+
+ if (vcc_data->skb)
+ dev_kfree_skb (vcc_data->skb);
+ vcc_data->skb = NULL;
+
+ kfree (vcc_data);
+ vcc->dev_data = NULL;
+
+ vcc->vpi = ATM_VPI_UNSPEC;
+ vcc->vci = ATM_VCI_UNSPEC;
+ clear_bit (ATM_VF_READY, &vcc->flags);
+ clear_bit (ATM_VF_PARTIAL, &vcc->flags);
+ clear_bit (ATM_VF_ADDR, &vcc->flags);
+
+ up (&instance->serialize);
+
+ dbg ("udsl_atm_close successful");
+}
+
+static int udsl_atm_ioctl (struct atm_dev *dev, unsigned int cmd, void *arg)
+{
+ switch (cmd) {
+ case ATM_QUERYLOOP:
+ return put_user (ATM_LM_NONE, (int *) arg) ? -EFAULT : 0;
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+
+/**********
+** USB **
+**********/
+
+static int udsl_set_alternate (struct udsl_instance_data *instance)
+{
+ down (&instance->serialize); /* vs self */
+ if (!instance->firmware_loaded) {
+ int ret;
+
+ if ((ret = usb_set_interface (instance->usb_dev, 1, 1)) < 0) {
+ dbg ("udsl_set_alternate: usb_set_interface returned %d!",
ret);
+ up (&instance->serialize);
+ return ret;
+ }
+ instance->firmware_loaded = 1;
+ }
+ up (&instance->serialize);
+
+ tasklet_schedule (&instance->receive_tasklet);
+
+ return 0;
+}
+
+static int udsl_usb_ioctl (struct usb_device *dev, unsigned int code, void *user_data)
+{
+ struct usb_interface *intf = usb_ifnum_to_if (dev, 1);
+ struct udsl_instance_data *instance = intf->private_data;
+
+ dbg ("udsl_usb_ioctl entered");
+
+ if (!instance) {
+ dbg ("udsl_usb_ioctl: NULL instance!");
+ return -ENODEV;
+ }
+
+ switch (code) {
+ case UDSL_IOCTL_LINE_UP:
+ instance->atm_dev->signal = ATM_PHY_SIG_FOUND;
+ return udsl_set_alternate (instance);
+ case UDSL_IOCTL_LINE_DOWN:
+ instance->atm_dev->signal = ATM_PHY_SIG_LOST;
+ return 0;
+ default:
+ return -ENOTTY;
+ }
+}
+
+static void *udsl_usb_probe (struct usb_device *dev, unsigned int ifnum, const struct
usb_device_id *id)
+{
+ struct udsl_instance_data *instance;
+ unsigned char mac_str [13];
+ int i, length;
+ char *buf;
+
+ dbg ("udsl_usb_probe: trying device with vendor=0x%x, product=0x%x, ifnum %d",
+ dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
+
+ if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) ||
+ (dev->descriptor.idVendor != SPEEDTOUCH_VENDORID) ||
+ (dev->descriptor.idProduct != SPEEDTOUCH_PRODUCTID) || (ifnum != 1))
+ return NULL;
+
+ dbg ("udsl_usb_probe: device accepted");
+
+ /* instance init */
+ if (!(instance = kmalloc (sizeof (struct udsl_instance_data), GFP_KERNEL))) {
+ dbg ("udsl_usb_probe: no memory for instance data!");
+ return NULL;
+ }
+
+ memset (instance, 0, sizeof (struct udsl_instance_data));
+
+ init_MUTEX (&instance->serialize);
+
+ instance->usb_dev = dev;
+
+ INIT_LIST_HEAD (&instance->vcc_list);
+
+ spin_lock_init (&instance->receive_lock);
+ INIT_LIST_HEAD (&instance->spare_receivers);
+ INIT_LIST_HEAD (&instance->filled_receive_buffers);
+
+ tasklet_init (&instance->receive_tasklet, udsl_process_receive, (unsigned
long) instance);
+ INIT_LIST_HEAD (&instance->spare_receive_buffers);
+
+ skb_queue_head_init (&instance->sndqueue);
+
+ spin_lock_init (&instance->send_lock);
+ INIT_LIST_HEAD (&instance->spare_senders);
+ INIT_LIST_HEAD (&instance->spare_send_buffers);
+
+ tasklet_init (&instance->send_tasklet, udsl_process_send, (unsigned long)
instance);
+ INIT_LIST_HEAD (&instance->filled_send_buffers);
+
+ /* receive init */
+ for (i = 0; i < num_rcv_urbs; i++) {
+ struct udsl_receiver *rcv = &(instance->receivers [i]);
+
+ if (!(rcv->urb = usb_alloc_urb (0))) {
+ dbg ("udsl_usb_probe: no memory for receive urb %d!", i);
+ goto fail;
+ }
+
+ rcv->instance = instance;
+
+ list_add (&rcv->list, &instance->spare_receivers);
+ }
+
+ for (i = 0; i < num_rcv_bufs; i++) {
+ struct udsl_receive_buffer *buf = &(instance->receive_buffers [i]);
+
+ if (!(buf->base = kmalloc (rcv_buf_size * ATM_CELL_SIZE, GFP_KERNEL)))
{
+ dbg ("udsl_usb_probe: no memory for receive buffer %d!", i);
+ goto fail;
+ }
+
+ list_add (&buf->list, &instance->spare_receive_buffers);
+ }
+
+ /* send init */
+ for (i = 0; i < num_snd_urbs; i++) {
+ struct udsl_sender *snd = &(instance->senders [i]);
+
+ if (!(snd->urb = usb_alloc_urb (0))) {
+ dbg ("udsl_usb_probe: no memory for send urb %d!", i);
+ goto fail;
+ }
+
+ snd->instance = instance;
+
+ list_add (&snd->list, &instance->spare_senders);
+ }
+
+ for (i = 0; i < num_snd_bufs; i++) {
+ struct udsl_send_buffer *buf = &(instance->send_buffers [i]);
+
+ if (!(buf->base = kmalloc (snd_buf_size * ATM_CELL_SIZE, GFP_KERNEL)))
{
+ dbg ("udsl_usb_probe: no memory for send buffer %d!", i);
+ goto fail;
+ }
+
+ list_add (&buf->list, &instance->spare_send_buffers);
+ }
+
+ /* ATM init */
+ if (!(instance->atm_dev = atm_dev_register (udsl_driver_name,
&udsl_atm_devops, -1, 0))) {
+ dbg ("udsl_usb_probe: failed to register ATM device!");
+ goto fail;
+ }
+
+ instance->atm_dev->ci_range.vpi_bits = ATM_CI_MAX;
+ instance->atm_dev->ci_range.vci_bits = ATM_CI_MAX;
+ instance->atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
+
+ /* temp init ATM device, set to 128kbit */
+ instance->atm_dev->link_rate = 128 * 1000 / 424;
+
+ /* set MAC address, it is stored in the serial number */
+ memset (instance->atm_dev->esi, 0, sizeof (instance->atm_dev->esi));
+ if (usb_string (dev, dev->descriptor.iSerialNumber, mac_str, sizeof (mac_str))
== 12)
+ for (i = 0; i < 6; i++)
+ instance->atm_dev->esi [i] = (hex2int (mac_str [i * 2]) * 16)
+ (hex2int (mac_str [i * 2 + 1]));
+
+ /* device description */
+ buf = instance->description;
+ length = sizeof (instance->description);
+
+ if ((i = usb_string (dev, dev->descriptor.iProduct, buf, length)) < 0)
+ goto finish;
+
+ buf += i;
+ length -= i;
+
+ i = snprintf (buf, length, " (");
+ buf += i;
+ length -= i;
+
+ if (length <= 0 || (i = usb_make_path (dev, buf, length)) < 0)
+ goto finish;
+
+ buf += i;
+ length -= i;
+
+ snprintf (buf, length, ")");
+
+finish:
+ /* ready for ATM callbacks */
+ wmb ();
+ instance->atm_dev->dev_data = instance;
+
+ return instance;
+
+fail:
+ for (i = 0; i < num_snd_bufs; i++)
+ kfree (instance->send_buffers [i].base);
+
+ for (i = 0; i < num_snd_urbs; i++)
+ usb_free_urb (instance->senders [i].urb);
+
+ for (i = 0; i < num_rcv_bufs; i++)
+ kfree (instance->receive_buffers [i].base);
+
+ for (i = 0; i < num_rcv_urbs; i++)
+ usb_free_urb (instance->receivers [i].urb);
+
+ kfree (instance);
+
+ return NULL;
+}
+
+static void udsl_usb_disconnect (struct usb_device *dev, void *ptr)
+{
+ struct udsl_instance_data *instance = ptr;
+ struct list_head *pos;
+ unsigned int count;
+ int result, i;
+
+ dbg ("udsl_usb_disconnect entered");
+
+ if (!instance) {
+ dbg ("udsl_usb_disconnect: NULL instance!");
+ return;
+ }
+
+ /* receive finalize */
+ tasklet_disable (&instance->receive_tasklet);
+
+ for (i = 0; i < num_rcv_urbs; i++)
+ if ((result = usb_unlink_urb (instance->receivers [i].urb)) < 0)
+ dbg ("udsl_usb_disconnect: usb_unlink_urb on receive urb %d
returned %d", i, result);
+
+ /* wait for completion handlers to finish */
+ do {
+ count = 0;
+ spin_lock_irq (&instance->receive_lock);
+ list_for_each (pos, &instance->spare_receivers)
+ if (++count > num_rcv_urbs)
+ panic (__FILE__ ": memory corruption detected at line
%d!\n", __LINE__);
+ spin_unlock_irq (&instance->receive_lock);
+
+ dbg ("udsl_usb_disconnect: found %u spare receivers", count);
+
+ if (count == num_rcv_urbs)
+ break;
+
+ set_current_state (TASK_RUNNING);
+ schedule ();
+ } while (1);
+
+ /* no need to take the spinlock */
+ INIT_LIST_HEAD (&instance->filled_receive_buffers);
+ INIT_LIST_HEAD (&instance->spare_receive_buffers);
+
+ tasklet_enable (&instance->receive_tasklet);
+
+ for (i = 0; i < num_rcv_urbs; i++)
+ usb_free_urb (instance->receivers [i].urb);
+
+ for (i = 0; i < num_rcv_bufs; i++)
+ kfree (instance->receive_buffers [i].base);
+
+ /* send finalize */
+ tasklet_disable (&instance->send_tasklet);
+
+ for (i = 0; i < num_snd_urbs; i++)
+ if ((result = usb_unlink_urb (instance->senders [i].urb)) < 0)
+ dbg ("udsl_usb_disconnect: usb_unlink_urb on send urb %d
returned %d", i, result);
+
+ /* wait for completion handlers to finish */
+ do {
+ count = 0;
+ spin_lock_irq (&instance->send_lock);
+ list_for_each (pos, &instance->spare_senders)
+ if (++count > num_snd_urbs)
+ panic (__FILE__ ": memory corruption detected at line
%d!\n", __LINE__);
+ spin_unlock_irq (&instance->send_lock);
+
+ dbg ("udsl_usb_disconnect: found %u spare senders", count);
+
+ if (count == num_snd_urbs)
+ break;
+
+ set_current_state (TASK_RUNNING);
+ schedule ();
+ } while (1);
+
+ /* no need to take the spinlock */
+ INIT_LIST_HEAD (&instance->spare_senders);
+ INIT_LIST_HEAD (&instance->spare_send_buffers);
+ instance->current_buffer = NULL;
+
+ tasklet_enable (&instance->send_tasklet);
+
+ for (i = 0; i < num_snd_urbs; i++)
+ usb_free_urb (instance->senders [i].urb);
+
+ for (i = 0; i < num_snd_bufs; i++)
+ kfree (instance->send_buffers [i].base);
+
+ wmb ();
+ instance->usb_dev = NULL;
+
+ /* ATM finalize */
+ shutdown_atm_dev (instance->atm_dev); /* frees instance, kills tasklets */
+}
+
+
+/***********
+** init **
+***********/
+
+static int __init udsl_usb_init (void)
+{
+ struct sk_buff *skb; /* dummy for sizeof */
+
+ dbg ("udsl_usb_init: driver version " DRIVER_VERSION);
+
+ if (sizeof (struct udsl_control) > sizeof (skb->cb)) {
+ printk (KERN_ERR __FILE__ ": unusable with this kernel!\n");
+ return -EIO;
+ }
+
+ if ((num_rcv_urbs > UDSL_MAX_RCV_URBS) || (num_snd_urbs > UDSL_MAX_SND_URBS) ||
+ (num_rcv_bufs > UDSL_MAX_RCV_BUFS) || (num_snd_bufs > UDSL_MAX_SND_BUFS) ||
+ (rcv_buf_size > UDSL_MAX_RCV_BUF_SIZE) || (snd_buf_size >
UDSL_MAX_SND_BUF_SIZE))
+ return -EINVAL;
+
+ return usb_register (&udsl_usb_driver);
+}
+
+static void __exit udsl_usb_cleanup (void)
+{
+ dbg ("udsl_usb_cleanup entered");
+
+ usb_deregister (&udsl_usb_driver);
+}
+
+module_init (udsl_usb_init);
+module_exit (udsl_usb_cleanup);
+
+MODULE_AUTHOR (DRIVER_AUTHOR);
+MODULE_DESCRIPTION (DRIVER_DESC);
+MODULE_LICENSE ("GPL");
+
+
+/************
+** debug **
+************/
+
+#ifdef VERBOSE_DEBUG
+static int udsl_print_packet (const unsigned char *data, int len)
+{
+ unsigned char buffer [256];
+ int i = 0, j = 0;
+
+ for (i = 0; i < len;) {
+ buffer [0] = '\0';
+ sprintf (buffer, "%.3d :", i);
+ for (j = 0; (j < 16) && (i < len); j++, i++) {
+ sprintf (buffer, "%s %2.2x", buffer, data [i]);
+ }
+ dbg ("%s", buffer);
+ }
+ return i;
+}
+#endif
diff -Nru a/drivers/usb/speedtouch.c b/drivers/usb/speedtouch.c
--- a/drivers/usb/speedtouch.c Fri Jun 27 16:27:13 2003
+++ /dev/null Wed Dec 31 16:00:00 1969
@@ -1,1344 +0,0 @@
-/******************************************************************************
- * speedtouch.c - Alcatel SpeedTouch USB xDSL modem driver
- *
- * Copyright (C) 2001, Alcatel
- * Copyright (C) 2003, Duncan Sands
- *
- * 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.
- *
- ******************************************************************************/
-
-/*
- * Written by Johan Verrept, maintained by Duncan Sands ([EMAIL PROTECTED])
- *
- * 1.6: - No longer opens a connection if the firmware is not loaded
- * - Added support for the speedtouch 330
- * - Removed the limit on the number of devices
- * - Module now autoloads on device plugin
- * - Merged relevant parts of sarlib
- * - Replaced the kernel thread with a tasklet
- * - New packet transmission code
- * - Changed proc file contents
- * - Fixed all known SMP races
- * - Many fixes and cleanups
- * - Various fixes by Oliver Neukum ([EMAIL PROTECTED])
- *
- * 1.5A: - Backport of version for inclusion in 2.5 series kernel
- * - Modifications by Richard Purdie ([EMAIL PROTECTED])
- * - made compatible with kernel 2.5.6 onwards by changing
- * udsl_usb_send_data_context->urb to a pointer and adding code
- * to alloc and free it
- * - remove_wait_queue() added to udsl_atm_processqueue_thread()
- *
- * 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL.
- * (reported by [EMAIL PROTECTED])
- *
- * 1.4: - changed the spin_lock() under interrupt to spin_lock_irqsave()
- * - unlink all active send urbs of a vcc that is being closed.
- *
- * 1.3.1: - added the version number
- *
- * 1.3: - Added multiple send urb support
- * - fixed memory leak and vcc->tx_inuse starvation bug
- * when not enough memory left in vcc.
- *
- * 1.2: - Fixed race condition in udsl_usb_send_data()
- * 1.1: - Turned off packet debugging
- *
- */
-
-#include <asm/semaphore.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <asm/uaccess.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-#include <linux/init.h>
-#include "speedcrc.h"
-
-/*
-#define DEBUG
-#define VERBOSE_DEBUG
-*/
-
-#include <linux/usb.h>
-
-
-#ifdef VERBOSE_DEBUG
-static int udsl_print_packet (const unsigned char *data, int len);
-#define PACKETDEBUG(arg...) udsl_print_packet (arg)
-#define vdbg(arg...) dbg (arg)
-#else
-#define PACKETDEBUG(arg...)
-#define vdbg(arg...)
-#endif
-
-#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <[EMAIL PROTECTED]>"
-#define DRIVER_DESC "Alcatel SpeedTouch USB driver"
-#define DRIVER_VERSION "1.6"
-
-static const char udsl_driver_name [] = "speedtch";
-
-#define SPEEDTOUCH_VENDORID 0x06b9
-#define SPEEDTOUCH_PRODUCTID 0x4061
-
-#define UDSL_MAX_RCV_URBS 4
-#define UDSL_MAX_SND_URBS 4
-#define UDSL_MAX_RCV_BUFS 8
-#define UDSL_MAX_SND_BUFS 8
-#define UDSL_MAX_RCV_BUF_SIZE 1024 /* ATM cells */
-#define UDSL_MAX_SND_BUF_SIZE 1024 /* ATM cells */
-#define UDSL_DEFAULT_RCV_URBS 1
-#define UDSL_DEFAULT_SND_URBS 1
-#define UDSL_DEFAULT_RCV_BUFS 2
-#define UDSL_DEFAULT_SND_BUFS 2
-#define UDSL_DEFAULT_RCV_BUF_SIZE 64 /* ATM cells */
-#define UDSL_DEFAULT_SND_BUF_SIZE 64 /* ATM cells */
-
-static unsigned int num_rcv_urbs = UDSL_DEFAULT_RCV_URBS;
-static unsigned int num_snd_urbs = UDSL_DEFAULT_SND_URBS;
-static unsigned int num_rcv_bufs = UDSL_DEFAULT_RCV_BUFS;
-static unsigned int num_snd_bufs = UDSL_DEFAULT_SND_BUFS;
-static unsigned int rcv_buf_size = UDSL_DEFAULT_RCV_BUF_SIZE;
-static unsigned int snd_buf_size = UDSL_DEFAULT_SND_BUF_SIZE;
-
-MODULE_PARM (num_rcv_urbs, "i");
-MODULE_PARM_DESC (num_rcv_urbs, "Number of urbs used for reception (range: 0-"
__MODULE_STRING (UDSL_MAX_RCV_URBS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_RCV_URBS) ")");
-
-MODULE_PARM (num_snd_urbs, "i");
-MODULE_PARM_DESC (num_snd_urbs, "Number of urbs used for transmission (range: 0-"
__MODULE_STRING (UDSL_MAX_SND_URBS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_SND_URBS) ")");
-
-MODULE_PARM (num_rcv_bufs, "i");
-MODULE_PARM_DESC (num_rcv_bufs, "Number of buffers used for reception (range: 0-"
__MODULE_STRING (UDSL_MAX_RCV_BUFS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_RCV_BUFS) ")");
-
-MODULE_PARM (num_snd_bufs, "i");
-MODULE_PARM_DESC (num_snd_bufs, "Number of buffers used for transmission (range: 0-"
__MODULE_STRING (UDSL_MAX_SND_BUFS) ", default: " __MODULE_STRING
(UDSL_DEFAULT_SND_BUFS) ")");
-
-MODULE_PARM (rcv_buf_size, "i");
-MODULE_PARM_DESC (rcv_buf_size, "Size of the buffers used for reception (range: 0-"
__MODULE_STRING (UDSL_MAX_RCV_BUF_SIZE) ", default: " __MODULE_STRING
(UDSL_DEFAULT_RCV_BUF_SIZE) ")");
-
-MODULE_PARM (snd_buf_size, "i");
-MODULE_PARM_DESC (snd_buf_size, "Size of the buffers used for transmission (range:
0-" __MODULE_STRING (UDSL_MAX_SND_BUF_SIZE) ", default: " __MODULE_STRING
(UDSL_DEFAULT_SND_BUF_SIZE) ")");
-
-#define UDSL_IOCTL_LINE_UP 1
-#define UDSL_IOCTL_LINE_DOWN 2
-
-#define UDSL_ENDPOINT_DATA_OUT 0x07
-#define UDSL_ENDPOINT_DATA_IN 0x87
-
-#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)
-#define UDSL_NUM_CELLS(x) (((x) + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD -
1) / ATM_CELL_PAYLOAD)
-
-#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
-
-static struct usb_device_id udsl_usb_ids [] = {
- { USB_DEVICE (SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID) },
- { }
-};
-
-MODULE_DEVICE_TABLE (usb, udsl_usb_ids);
-
-/* receive */
-
-struct udsl_receive_buffer {
- struct list_head list;
- unsigned char *base;
- unsigned int filled_cells;
-};
-
-struct udsl_receiver {
- struct list_head list;
- struct udsl_receive_buffer *buffer;
- struct urb *urb;
- struct udsl_instance_data *instance;
-};
-
-struct udsl_vcc_data {
- /* vpi/vci lookup */
- struct list_head list;
- short vpi;
- int vci;
- struct atm_vcc *vcc;
-
- /* raw cell reassembly */
- struct sk_buff *skb;
- unsigned int max_pdu;
-};
-
-/* send */
-
-struct udsl_send_buffer {
- struct list_head list;
- unsigned char *base;
- unsigned char *free_start;
- unsigned int free_cells;
-};
-
-struct udsl_sender {
- struct list_head list;
- struct udsl_send_buffer *buffer;
- struct urb *urb;
- struct udsl_instance_data *instance;
-};
-
-struct udsl_control {
- struct atm_skb_data atm_data;
- unsigned int num_cells;
- unsigned int num_entire;
- unsigned int pdu_padding;
- unsigned char cell_header [ATM_CELL_HEADER];
- unsigned char aal5_trailer [ATM_AAL5_TRAILER];
-};
-
-#define UDSL_SKB(x) ((struct udsl_control *)(x)->cb)
-
-/* main driver data */
-
-struct udsl_instance_data {
- struct semaphore serialize;
-
- /* USB device part */
- struct usb_device *usb_dev;
- char description [64];
- int firmware_loaded;
-
- /* ATM device part */
- struct atm_dev *atm_dev;
- struct list_head vcc_list;
-
- /* receive */
- struct udsl_receiver receivers [UDSL_MAX_RCV_URBS];
- struct udsl_receive_buffer receive_buffers [UDSL_MAX_RCV_BUFS];
-
- spinlock_t receive_lock;
- struct list_head spare_receivers;
- struct list_head filled_receive_buffers;
-
- struct tasklet_struct receive_tasklet;
- struct list_head spare_receive_buffers;
-
- /* send */
- struct udsl_sender senders [UDSL_MAX_SND_URBS];
- struct udsl_send_buffer send_buffers [UDSL_MAX_SND_BUFS];
-
- struct sk_buff_head sndqueue;
-
- spinlock_t send_lock;
- struct list_head spare_senders;
- struct list_head spare_send_buffers;
-
- struct tasklet_struct send_tasklet;
- struct sk_buff *current_skb; /* being emptied */
- struct udsl_send_buffer *current_buffer; /* being filled */
- struct list_head filled_send_buffers;
-};
-
-/* ATM */
-
-static void udsl_atm_dev_close (struct atm_dev *dev);
-static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci);
-static void udsl_atm_close (struct atm_vcc *vcc);
-static int udsl_atm_ioctl (struct atm_dev *dev, unsigned int cmd, void *arg);
-static int udsl_atm_send (struct atm_vcc *vcc, struct sk_buff *skb);
-static int udsl_atm_proc_read (struct atm_dev *atm_dev, loff_t *pos, char *page);
-
-static struct atmdev_ops udsl_atm_devops = {
- dev_close: udsl_atm_dev_close,
- open: udsl_atm_open,
- close: udsl_atm_close,
- ioctl: udsl_atm_ioctl,
- send: udsl_atm_send,
- proc_read: udsl_atm_proc_read,
- owner: THIS_MODULE,
-};
-
-/* USB */
-
-static void *udsl_usb_probe (struct usb_device *dev, unsigned int ifnum, const struct
usb_device_id *id);
-static void udsl_usb_disconnect (struct usb_device *dev, void *ptr);
-static int udsl_usb_ioctl (struct usb_device *hub, unsigned int code, void
*user_data);
-
-static struct usb_driver udsl_usb_driver = {
- owner: THIS_MODULE,
- name: udsl_driver_name,
- probe: udsl_usb_probe,
- disconnect: udsl_usb_disconnect,
- ioctl: udsl_usb_ioctl,
- id_table: udsl_usb_ids,
-};
-
-
-/*************
-** decode **
-*************/
-
-static inline struct udsl_vcc_data *udsl_find_vcc (struct udsl_instance_data
*instance, short vpi, int vci)
-{
- struct udsl_vcc_data *vcc;
-
- list_for_each_entry (vcc, &instance->vcc_list, list)
- if ((vcc->vci == vci) && (vcc->vpi == vpi))
- return vcc;
- return NULL;
-}
-
-static void udsl_extract_cells (struct udsl_instance_data *instance, unsigned char
*source, unsigned int howmany)
-{
- struct udsl_vcc_data *cached_vcc = NULL;
- struct atm_vcc *vcc;
- struct sk_buff *skb;
- struct udsl_vcc_data *vcc_data;
- int cached_vci = 0;
- unsigned int i;
- unsigned int length;
- unsigned int pdu_length;
- int pti;
- int vci;
- short cached_vpi = 0;
- short vpi;
-
- for (i = 0; i < howmany; i++, source += ATM_CELL_SIZE) {
- vpi = ((source [0] & 0x0f) << 4) | (source [1] >> 4);
- vci = ((source [1] & 0x0f) << 12) | (source [2] << 4) | (source [3] >>
4);
- pti = (source [3] & 0x2) != 0;
-
- vdbg ("udsl_extract_cells: vpi %hd, vci %d, pti %d", vpi, vci, pti);
-
- if (cached_vcc && (vci == cached_vci) && (vpi == cached_vpi))
- vcc_data = cached_vcc;
- else if ((vcc_data = udsl_find_vcc (instance, vpi, vci))) {
- cached_vcc = vcc_data;
- cached_vpi = vpi;
- cached_vci = vci;
- } else {
- dbg ("udsl_extract_cells: unknown vpi/vci (%hd/%d)!", vpi,
vci);
- continue;
- }
-
- vcc = vcc_data->vcc;
-
- if (!vcc_data->skb && !(vcc_data->skb = dev_alloc_skb
(vcc_data->max_pdu))) {
- dbg ("udsl_extract_cells: no memory for skb (vcc: 0x%p)!",
vcc);
- if (pti)
- atomic_inc (&vcc->stats->rx_err);
- continue;
- }
-
- skb = vcc_data->skb;
-
- if (skb->len + ATM_CELL_PAYLOAD > vcc_data->max_pdu) {
- dbg ("udsl_extract_cells: buffer overrun (max_pdu: %u,
skb->len %u, vcc: 0x%p)", vcc_data->max_pdu, skb->len, vcc);
- /* discard cells already received */
- skb_trim (skb, 0);
- BUG_ON (vcc_data->max_pdu < ATM_CELL_PAYLOAD);
- }
-
- memcpy (skb->tail, source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
- __skb_put (skb, ATM_CELL_PAYLOAD);
-
- if (pti) {
- length = (source [ATM_CELL_SIZE - 6] << 8) + source
[ATM_CELL_SIZE - 5];
-
- /* guard against overflow */
- if (length > ATM_MAX_AAL5_PDU) {
- dbg ("udsl_extract_cells: bogus length %u (vcc:
0x%p)", length, vcc);
- goto drop;
- }
-
- pdu_length = UDSL_NUM_CELLS (length) * ATM_CELL_PAYLOAD;
-
- if (skb->len < pdu_length) {
- dbg ("udsl_extract_cells: bogus pdu_length %u
(skb->len: %u, vcc: 0x%p)", pdu_length, skb->len, vcc);
- goto drop;
- }
-
- if (crc32_be (~0, skb->tail - pdu_length, pdu_length) !=
0xc704dd7b) {
- dbg ("udsl_extract_cells: packet failed crc check
(vcc: 0x%p)", vcc);
- goto drop;
- }
-
- if (!atm_charge (vcc, skb->truesize)) {
- dbg ("udsl_extract_cells: failed atm_charge
(skb->truesize: %u)", skb->truesize);
- goto drop_no_stats; /* atm_charge increments rx_drop */
- }
-
- /* now that we are sure to send the skb, it is ok to change
skb->data */
- if (skb->len > pdu_length)
- skb_pull (skb, skb->len - pdu_length); /* discard
initial junk */
-
- skb_trim (skb, length); /* drop zero padding and trailer */
-
- atomic_inc (&vcc->stats->rx);
-
- PACKETDEBUG (skb->data, skb->len);
-
- vdbg ("udsl_extract_cells: sending skb 0x%p, skb->len %u,
skb->truesize %u", skb, skb->len, skb->truesize);
-
- vcc->push (vcc, skb);
-
- vcc_data->skb = NULL;
-
- continue;
-
-drop:
- atomic_inc (&vcc->stats->rx_err);
-drop_no_stats:
- skb_trim (skb, 0);
- }
- }
-}
-
-
-/*************
-** encode **
-*************/
-
-static const unsigned char zeros [ATM_CELL_PAYLOAD];
-
-static void udsl_groom_skb (struct atm_vcc *vcc, struct sk_buff *skb)
-{
- struct udsl_control *ctrl = UDSL_SKB (skb);
- unsigned int zero_padding;
- u32 crc;
-
- ctrl->atm_data.vcc = vcc;
- ctrl->cell_header [0] = vcc->vpi >> 4;
- ctrl->cell_header [1] = (vcc->vpi << 4) | (vcc->vci >> 12);
- ctrl->cell_header [2] = vcc->vci >> 4;
- ctrl->cell_header [3] = vcc->vci << 4;
- ctrl->cell_header [4] = 0xec;
-
- ctrl->num_cells = UDSL_NUM_CELLS (skb->len);
- ctrl->num_entire = skb->len / ATM_CELL_PAYLOAD;
-
- zero_padding = ctrl->num_cells * ATM_CELL_PAYLOAD - skb->len -
ATM_AAL5_TRAILER;
-
- if (ctrl->num_entire + 1 < ctrl->num_cells)
- ctrl->pdu_padding = zero_padding - (ATM_CELL_PAYLOAD -
ATM_AAL5_TRAILER);
- else
- ctrl->pdu_padding = zero_padding;
-
- ctrl->aal5_trailer [0] = 0; /* UU = 0 */
- ctrl->aal5_trailer [1] = 0; /* CPI = 0 */
- ctrl->aal5_trailer [2] = skb->len >> 8;
- ctrl->aal5_trailer [3] = skb->len;
-
- crc = crc32_be (~0, skb->data, skb->len);
- crc = crc32_be (crc, zeros, zero_padding);
- crc = crc32_be (crc, ctrl->aal5_trailer, 4);
- crc = ~crc;
-
- ctrl->aal5_trailer [4] = crc >> 24;
- ctrl->aal5_trailer [5] = crc >> 16;
- ctrl->aal5_trailer [6] = crc >> 8;
- ctrl->aal5_trailer [7] = crc;
-}
-
-static unsigned int udsl_write_cells (unsigned int howmany, struct sk_buff *skb,
unsigned char **target_p)
-{
- struct udsl_control *ctrl = UDSL_SKB (skb);
- unsigned char *target = *target_p;
- unsigned int nc, ne, i;
-
- vdbg ("udsl_write_cells: howmany=%u, skb->len=%d, num_cells=%u, num_entire=%u,
pdu_padding=%u", howmany, skb->len, ctrl->num_cells, ctrl->num_entire,
ctrl->pdu_padding);
-
- nc = ctrl->num_cells;
- ne = min (howmany, ctrl->num_entire);
-
- for (i = 0; i < ne; i++) {
- memcpy (target, ctrl->cell_header, ATM_CELL_HEADER);
- target += ATM_CELL_HEADER;
- memcpy (target, skb->data, ATM_CELL_PAYLOAD);
- target += ATM_CELL_PAYLOAD;
- __skb_pull (skb, ATM_CELL_PAYLOAD);
- }
-
- ctrl->num_entire -= ne;
-
- if (!(ctrl->num_cells -= ne) || !(howmany -= ne))
- goto out;
-
- memcpy (target, ctrl->cell_header, ATM_CELL_HEADER);
- target += ATM_CELL_HEADER;
- memcpy (target, skb->data, skb->len);
- target += skb->len;
- __skb_pull (skb, skb->len);
- memset (target, 0, ctrl->pdu_padding);
- target += ctrl->pdu_padding;
-
- if (--ctrl->num_cells) {
- if (!--howmany) {
- ctrl->pdu_padding = ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
- goto out;
- }
-
- memcpy (target, ctrl->cell_header, ATM_CELL_HEADER);
- target += ATM_CELL_HEADER;
- memset (target, 0, ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER);
- target += ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
-
- BUG_ON (--ctrl->num_cells);
- }
-
- memcpy (target, ctrl->aal5_trailer, ATM_AAL5_TRAILER);
- target += ATM_AAL5_TRAILER;
- /* set pti bit in last cell */
- *(target + 3 - ATM_CELL_SIZE) |= 0x2;
-
-out:
- *target_p = target;
- return nc - ctrl->num_cells;
-}
-
-
-/**************
-** receive **
-**************/
-
-static void udsl_complete_receive (struct urb *urb)
-{
- struct udsl_receive_buffer *buf;
- struct udsl_instance_data *instance;
- struct udsl_receiver *rcv;
- unsigned long flags;
-
- if (!urb || !(rcv = urb->context)) {
- dbg ("udsl_complete_receive: bad urb!");
- return;
- }
-
- instance = rcv->instance;
- buf = rcv->buffer;
-
- buf->filled_cells = urb->actual_length / ATM_CELL_SIZE;
-
- vdbg ("udsl_complete_receive: urb 0x%p, status %d, actual_length %d,
filled_cells %u, rcv 0x%p, buf 0x%p", urb, urb->status, urb->actual_length,
buf->filled_cells, rcv, buf);
-
- BUG_ON (buf->filled_cells > rcv_buf_size);
-
- /* may not be in_interrupt() */
- spin_lock_irqsave (&instance->receive_lock, flags);
- list_add (&rcv->list, &instance->spare_receivers);
- list_add_tail (&buf->list, &instance->filled_receive_buffers);
- if (likely (!urb->status))
- tasklet_schedule (&instance->receive_tasklet);
- spin_unlock_irqrestore (&instance->receive_lock, flags);
-}
-
-static void udsl_process_receive (unsigned long data)
-{
- struct udsl_receive_buffer *buf;
- struct udsl_instance_data *instance = (struct udsl_instance_data *) data;
- struct udsl_receiver *rcv;
- int err;
-
-made_progress:
- while (!list_empty (&instance->spare_receive_buffers)) {
- spin_lock_irq (&instance->receive_lock);
- if (list_empty (&instance->spare_receivers)) {
- spin_unlock_irq (&instance->receive_lock);
- break;
- }
- rcv = list_entry (instance->spare_receivers.next, struct
udsl_receiver, list);
- list_del (&rcv->list);
- spin_unlock_irq (&instance->receive_lock);
-
- buf = list_entry (instance->spare_receive_buffers.next, struct
udsl_receive_buffer, list);
- list_del (&buf->list);
-
- rcv->buffer = buf;
-
- FILL_BULK_URB (rcv->urb,
- instance->usb_dev,
- usb_rcvbulkpipe (instance->usb_dev,
UDSL_ENDPOINT_DATA_IN),
- buf->base,
- rcv_buf_size * ATM_CELL_SIZE,
- udsl_complete_receive,
- rcv);
- rcv->urb->transfer_flags |= USB_QUEUE_BULK;
-
- vdbg ("udsl_process_receive: sending urb 0x%p, rcv 0x%p, buf 0x%p",
rcv->urb, rcv, buf);
-
- if ((err = usb_submit_urb(rcv->urb)) < 0) {
- dbg ("udsl_process_receive: urb submission failed (%d)!", err);
- list_add (&buf->list, &instance->spare_receive_buffers);
- spin_lock_irq (&instance->receive_lock);
- list_add (&rcv->list, &instance->spare_receivers);
- spin_unlock_irq (&instance->receive_lock);
- break;
- }
- }
-
- spin_lock_irq (&instance->receive_lock);
- if (list_empty (&instance->filled_receive_buffers)) {
- spin_unlock_irq (&instance->receive_lock);
- return; /* done - no more buffers */
- }
- buf = list_entry (instance->filled_receive_buffers.next, struct
udsl_receive_buffer, list);
- list_del (&buf->list);
- spin_unlock_irq (&instance->receive_lock);
- vdbg ("udsl_process_receive: processing buf 0x%p", buf);
- udsl_extract_cells (instance, buf->base, buf->filled_cells);
- list_add (&buf->list, &instance->spare_receive_buffers);
- goto made_progress;
-}
-
-
-/***********
-** send **
-***********/
-
-static void udsl_complete_send (struct urb *urb)
-{
- struct udsl_instance_data *instance;
- struct udsl_sender *snd;
- unsigned long flags;
-
- if (!urb || !(snd = urb->context) || !(instance = snd->instance)) {
- dbg ("udsl_complete_send: bad urb!");
- return;
- }
-
- vdbg ("udsl_complete_send: urb 0x%p, status %d, snd 0x%p, buf 0x%p", urb,
urb->status, snd, snd->buffer);
-
- /* may not be in_interrupt() */
- spin_lock_irqsave (&instance->send_lock, flags);
- list_add (&snd->list, &instance->spare_senders);
- list_add (&snd->buffer->list, &instance->spare_send_buffers);
- tasklet_schedule (&instance->send_tasklet);
- spin_unlock_irqrestore (&instance->send_lock, flags);
-}
-
-static void udsl_process_send (unsigned long data)
-{
- struct udsl_send_buffer *buf;
- struct udsl_instance_data *instance = (struct udsl_instance_data *) data;
- struct sk_buff *skb;
- struct udsl_sender *snd;
- int err;
- unsigned int num_written;
-
-made_progress:
- spin_lock_irq (&instance->send_lock);
- while (!list_empty (&instance->spare_senders)) {
- if (!list_empty (&instance->filled_send_buffers)) {
- buf = list_entry (instance->filled_send_buffers.next, struct
udsl_send_buffer, list);
- list_del (&buf->list);
- } else if ((buf = instance->current_buffer)) {
- instance->current_buffer = NULL;
- } else /* all buffers empty */
- break;
-
- snd = list_entry (instance->spare_senders.next, struct udsl_sender,
list);
- list_del (&snd->list);
- spin_unlock_irq (&instance->send_lock);
-
- snd->buffer = buf;
- FILL_BULK_URB (snd->urb,
- instance->usb_dev,
- usb_sndbulkpipe (instance->usb_dev,
UDSL_ENDPOINT_DATA_OUT),
- buf->base,
- (snd_buf_size - buf->free_cells) * ATM_CELL_SIZE,
- udsl_complete_send,
- snd);
- snd->urb->transfer_flags |= USB_QUEUE_BULK;
-
- vdbg ("udsl_process_send: submitting urb 0x%p (%d cells), snd 0x%p,
buf 0x%p", snd->urb, snd_buf_size - buf->free_cells, snd, buf);
-
- if ((err = usb_submit_urb(snd->urb)) < 0) {
- dbg ("udsl_process_send: urb submission failed (%d)!", err);
- spin_lock_irq (&instance->send_lock);
- list_add (&snd->list, &instance->spare_senders);
- spin_unlock_irq (&instance->send_lock);
- list_add (&buf->list, &instance->filled_send_buffers);
- return; /* bail out */
- }
-
- spin_lock_irq (&instance->send_lock);
- } /* while */
- spin_unlock_irq (&instance->send_lock);
-
- if (!instance->current_skb && !(instance->current_skb = skb_dequeue
(&instance->sndqueue)))
- return; /* done - no more skbs */
-
- skb = instance->current_skb;
-
- if (!(buf = instance->current_buffer)) {
- spin_lock_irq (&instance->send_lock);
- if (list_empty (&instance->spare_send_buffers)) {
- instance->current_buffer = NULL;
- spin_unlock_irq (&instance->send_lock);
- return; /* done - no more buffers */
- }
- buf = list_entry (instance->spare_send_buffers.next, struct
udsl_send_buffer, list);
- list_del (&buf->list);
- spin_unlock_irq (&instance->send_lock);
-
- buf->free_start = buf->base;
- buf->free_cells = snd_buf_size;
-
- instance->current_buffer = buf;
- }
-
- num_written = udsl_write_cells (buf->free_cells, skb, &buf->free_start);
-
- vdbg ("udsl_process_send: wrote %u cells from skb 0x%p to buffer 0x%p",
num_written, skb, buf);
-
- if (!(buf->free_cells -= num_written)) {
- list_add_tail (&buf->list, &instance->filled_send_buffers);
- instance->current_buffer = NULL;
- }
-
- vdbg ("udsl_process_send: buffer contains %d cells, %d left", snd_buf_size -
buf->free_cells, buf->free_cells);
-
- if (!UDSL_SKB (skb)->num_cells) {
- struct atm_vcc *vcc = UDSL_SKB (skb)->atm_data.vcc;
-
- if (vcc->pop)
- vcc->pop (vcc, skb);
- else
- dev_kfree_skb (skb);
- instance->current_skb = NULL;
-
- atomic_inc (&vcc->stats->tx);
- }
-
- goto made_progress;
-}
-
-static void udsl_cancel_send (struct udsl_instance_data *instance, struct atm_vcc
*vcc)
-{
- struct sk_buff *skb, *n;
-
- dbg ("udsl_cancel_send entered");
- spin_lock_irq (&instance->sndqueue.lock);
- for (skb = instance->sndqueue.next, n = skb->next; skb != (struct sk_buff
*)&instance->sndqueue; skb = n, n = skb->next)
- if (UDSL_SKB (skb)->atm_data.vcc == vcc) {
- dbg ("udsl_cancel_send: popping skb 0x%p", skb);
- __skb_unlink (skb, &instance->sndqueue);
- if (vcc->pop)
- vcc->pop (vcc, skb);
- else
- dev_kfree_skb (skb);
- }
- spin_unlock_irq (&instance->sndqueue.lock);
-
- tasklet_disable (&instance->send_tasklet);
- if ((skb = instance->current_skb) && (UDSL_SKB (skb)->atm_data.vcc == vcc)) {
- dbg ("udsl_cancel_send: popping current skb (0x%p)", skb);
- instance->current_skb = NULL;
- if (vcc->pop)
- vcc->pop (vcc, skb);
- else
- dev_kfree_skb (skb);
- }
- tasklet_enable (&instance->send_tasklet);
- dbg ("udsl_cancel_send done");
-}
-
-static int udsl_atm_send (struct atm_vcc *vcc, struct sk_buff *skb)
-{
- struct udsl_instance_data *instance = vcc->dev->dev_data;
-
- vdbg ("udsl_atm_send called (skb 0x%p, len %u)", skb, skb->len);
-
- if (!instance || !instance->usb_dev) {
- dbg ("udsl_atm_send: NULL data!");
- return -ENODEV;
- }
-
- if (vcc->qos.aal != ATM_AAL5) {
- dbg ("udsl_atm_send: unsupported ATM type %d!", vcc->qos.aal);
- return -EINVAL;
- }
-
- if (skb->len > ATM_MAX_AAL5_PDU) {
- dbg ("udsl_atm_send: packet too long (%d vs %d)!", skb->len,
ATM_MAX_AAL5_PDU);
- return -EINVAL;
- }
-
- PACKETDEBUG (skb->data, skb->len);
-
- udsl_groom_skb (vcc, skb);
- skb_queue_tail (&instance->sndqueue, skb);
- tasklet_schedule (&instance->send_tasklet);
-
- return 0;
-}
-
-
-/**********
-** ATM **
-**********/
-
-static void udsl_atm_dev_close (struct atm_dev *dev)
-{
- struct udsl_instance_data *instance = dev->dev_data;
-
- if (!instance) {
- dbg ("udsl_atm_dev_close: NULL instance!");
- return;
- }
-
- dbg ("udsl_atm_dev_close: queue has %u elements", instance->sndqueue.qlen);
-
- tasklet_kill (&instance->receive_tasklet);
- tasklet_kill (&instance->send_tasklet);
- kfree (instance);
- dev->dev_data = NULL;
-}
-
-static int udsl_atm_proc_read (struct atm_dev *atm_dev, loff_t *pos, char *page)
-{
- struct udsl_instance_data *instance = atm_dev->dev_data;
- int left = *pos;
-
- if (!instance) {
- dbg ("udsl_atm_proc_read: NULL instance!");
- return -ENODEV;
- }
-
- if (!left--)
- return sprintf (page, "%s\n", instance->description);
-
- if (!left--)
- return sprintf (page, "MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
- atm_dev->esi [0], atm_dev->esi [1], atm_dev->esi [2],
- atm_dev->esi [3], atm_dev->esi [4], atm_dev->esi [5]);
-
- if (!left--)
- return sprintf (page, "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop
)\n",
- atomic_read (&atm_dev->stats.aal5.tx),
- atomic_read (&atm_dev->stats.aal5.tx_err),
- atomic_read (&atm_dev->stats.aal5.rx),
- atomic_read (&atm_dev->stats.aal5.rx_err),
- atomic_read (&atm_dev->stats.aal5.rx_drop));
-
- if (!left--) {
- switch (atm_dev->signal) {
- case ATM_PHY_SIG_FOUND:
- sprintf (page, "Line up");
- break;
- case ATM_PHY_SIG_LOST:
- sprintf (page, "Line down");
- break;
- default:
- sprintf (page, "Line state unknown");
- break;
- }
-
- if (instance->usb_dev) {
- if (!instance->firmware_loaded)
- strcat (page, ", no firmware\n");
- else
- strcat (page, ", firmware loaded\n");
- } else
- strcat (page, ", disconnected\n");
-
- return strlen (page);
- }
-
- return 0;
-}
-
-static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci)
-{
- struct udsl_instance_data *instance = vcc->dev->dev_data;
- struct udsl_vcc_data *new;
-
- dbg ("udsl_atm_open: vpi %hd, vci %d", vpi, vci);
-
- if (!instance || !instance->usb_dev) {
- dbg ("udsl_atm_open: NULL data!");
- return -ENODEV;
- }
-
- if ((vpi == ATM_VPI_ANY) || (vci == ATM_VCI_ANY))
- return -EINVAL;
-
- /* only support AAL5 */
- if ((vcc->qos.aal != ATM_AAL5) || (vcc->qos.rxtp.max_sdu < 0) ||
(vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU))
- return -EINVAL;
-
- if (!instance->firmware_loaded) {
- dbg ("udsl_atm_open: firmware not loaded!");
- return -EAGAIN;
- }
-
- down (&instance->serialize); /* vs self, udsl_atm_close */
-
- if (udsl_find_vcc (instance, vpi, vci)) {
- up (&instance->serialize);
- return -EADDRINUSE;
- }
-
- if (!(new = kmalloc (sizeof (struct udsl_vcc_data), GFP_KERNEL))) {
- up (&instance->serialize);
- return -ENOMEM;
- }
-
- memset (new, 0, sizeof (struct udsl_vcc_data));
- new->vcc = vcc;
- new->vpi = vpi;
- new->vci = vci;
- new->max_pdu = max (1, UDSL_NUM_CELLS (vcc->qos.rxtp.max_sdu)) *
ATM_CELL_PAYLOAD;
-
- vcc->dev_data = new;
- vcc->vpi = vpi;
- vcc->vci = vci;
-
- tasklet_disable (&instance->receive_tasklet);
- list_add (&new->list, &instance->vcc_list);
- tasklet_enable (&instance->receive_tasklet);
-
- set_bit (ATM_VF_ADDR, &vcc->flags);
- set_bit (ATM_VF_PARTIAL, &vcc->flags);
- set_bit (ATM_VF_READY, &vcc->flags);
-
- up (&instance->serialize);
-
- tasklet_schedule (&instance->receive_tasklet);
-
- dbg ("udsl_atm_open: allocated vcc data 0x%p (max_pdu: %u)", new,
new->max_pdu);
-
- return 0;
-}
-
-static void udsl_atm_close (struct atm_vcc *vcc)
-{
- struct udsl_instance_data *instance = vcc->dev->dev_data;
- struct udsl_vcc_data *vcc_data = vcc->dev_data;
-
- dbg ("udsl_atm_close called");
-
- if (!instance || !vcc_data) {
- dbg ("udsl_atm_close: NULL data!");
- return;
- }
-
- dbg ("udsl_atm_close: deallocating vcc 0x%p with vpi %d vci %d", vcc_data,
vcc_data->vpi, vcc_data->vci);
-
- udsl_cancel_send (instance, vcc);
-
- down (&instance->serialize); /* vs self, udsl_atm_open */
-
- tasklet_disable (&instance->receive_tasklet);
- list_del (&vcc_data->list);
- tasklet_enable (&instance->receive_tasklet);
-
- if (vcc_data->skb)
- dev_kfree_skb (vcc_data->skb);
- vcc_data->skb = NULL;
-
- kfree (vcc_data);
- vcc->dev_data = NULL;
-
- vcc->vpi = ATM_VPI_UNSPEC;
- vcc->vci = ATM_VCI_UNSPEC;
- clear_bit (ATM_VF_READY, &vcc->flags);
- clear_bit (ATM_VF_PARTIAL, &vcc->flags);
- clear_bit (ATM_VF_ADDR, &vcc->flags);
-
- up (&instance->serialize);
-
- dbg ("udsl_atm_close successful");
-}
-
-static int udsl_atm_ioctl (struct atm_dev *dev, unsigned int cmd, void *arg)
-{
- switch (cmd) {
- case ATM_QUERYLOOP:
- return put_user (ATM_LM_NONE, (int *) arg) ? -EFAULT : 0;
- default:
- return -ENOIOCTLCMD;
- }
-}
-
-
-/**********
-** USB **
-**********/
-
-static int udsl_set_alternate (struct udsl_instance_data *instance)
-{
- down (&instance->serialize); /* vs self */
- if (!instance->firmware_loaded) {
- int ret;
-
- if ((ret = usb_set_interface (instance->usb_dev, 1, 1)) < 0) {
- dbg ("udsl_set_alternate: usb_set_interface returned %d!",
ret);
- up (&instance->serialize);
- return ret;
- }
- instance->firmware_loaded = 1;
- }
- up (&instance->serialize);
-
- tasklet_schedule (&instance->receive_tasklet);
-
- return 0;
-}
-
-static int udsl_usb_ioctl (struct usb_device *dev, unsigned int code, void *user_data)
-{
- struct usb_interface *intf = usb_ifnum_to_if (dev, 1);
- struct udsl_instance_data *instance = intf->private_data;
-
- dbg ("udsl_usb_ioctl entered");
-
- if (!instance) {
- dbg ("udsl_usb_ioctl: NULL instance!");
- return -ENODEV;
- }
-
- switch (code) {
- case UDSL_IOCTL_LINE_UP:
- instance->atm_dev->signal = ATM_PHY_SIG_FOUND;
- return udsl_set_alternate (instance);
- case UDSL_IOCTL_LINE_DOWN:
- instance->atm_dev->signal = ATM_PHY_SIG_LOST;
- return 0;
- default:
- return -ENOTTY;
- }
-}
-
-static void *udsl_usb_probe (struct usb_device *dev, unsigned int ifnum, const struct
usb_device_id *id)
-{
- struct udsl_instance_data *instance;
- unsigned char mac_str [13];
- int i, length;
- char *buf;
-
- dbg ("udsl_usb_probe: trying device with vendor=0x%x, product=0x%x, ifnum %d",
- dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
-
- if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) ||
- (dev->descriptor.idVendor != SPEEDTOUCH_VENDORID) ||
- (dev->descriptor.idProduct != SPEEDTOUCH_PRODUCTID) || (ifnum != 1))
- return NULL;
-
- dbg ("udsl_usb_probe: device accepted");
-
- /* instance init */
- if (!(instance = kmalloc (sizeof (struct udsl_instance_data), GFP_KERNEL))) {
- dbg ("udsl_usb_probe: no memory for instance data!");
- return NULL;
- }
-
- memset (instance, 0, sizeof (struct udsl_instance_data));
-
- init_MUTEX (&instance->serialize);
-
- instance->usb_dev = dev;
-
- INIT_LIST_HEAD (&instance->vcc_list);
-
- spin_lock_init (&instance->receive_lock);
- INIT_LIST_HEAD (&instance->spare_receivers);
- INIT_LIST_HEAD (&instance->filled_receive_buffers);
-
- tasklet_init (&instance->receive_tasklet, udsl_process_receive, (unsigned
long) instance);
- INIT_LIST_HEAD (&instance->spare_receive_buffers);
-
- skb_queue_head_init (&instance->sndqueue);
-
- spin_lock_init (&instance->send_lock);
- INIT_LIST_HEAD (&instance->spare_senders);
- INIT_LIST_HEAD (&instance->spare_send_buffers);
-
- tasklet_init (&instance->send_tasklet, udsl_process_send, (unsigned long)
instance);
- INIT_LIST_HEAD (&instance->filled_send_buffers);
-
- /* receive init */
- for (i = 0; i < num_rcv_urbs; i++) {
- struct udsl_receiver *rcv = &(instance->receivers [i]);
-
- if (!(rcv->urb = usb_alloc_urb (0))) {
- dbg ("udsl_usb_probe: no memory for receive urb %d!", i);
- goto fail;
- }
-
- rcv->instance = instance;
-
- list_add (&rcv->list, &instance->spare_receivers);
- }
-
- for (i = 0; i < num_rcv_bufs; i++) {
- struct udsl_receive_buffer *buf = &(instance->receive_buffers [i]);
-
- if (!(buf->base = kmalloc (rcv_buf_size * ATM_CELL_SIZE, GFP_KERNEL)))
{
- dbg ("udsl_usb_probe: no memory for receive buffer %d!", i);
- goto fail;
- }
-
- list_add (&buf->list, &instance->spare_receive_buffers);
- }
-
- /* send init */
- for (i = 0; i < num_snd_urbs; i++) {
- struct udsl_sender *snd = &(instance->senders [i]);
-
- if (!(snd->urb = usb_alloc_urb (0))) {
- dbg ("udsl_usb_probe: no memory for send urb %d!", i);
- goto fail;
- }
-
- snd->instance = instance;
-
- list_add (&snd->list, &instance->spare_senders);
- }
-
- for (i = 0; i < num_snd_bufs; i++) {
- struct udsl_send_buffer *buf = &(instance->send_buffers [i]);
-
- if (!(buf->base = kmalloc (snd_buf_size * ATM_CELL_SIZE, GFP_KERNEL)))
{
- dbg ("udsl_usb_probe: no memory for send buffer %d!", i);
- goto fail;
- }
-
- list_add (&buf->list, &instance->spare_send_buffers);
- }
-
- /* ATM init */
- if (!(instance->atm_dev = atm_dev_register (udsl_driver_name,
&udsl_atm_devops, -1, 0))) {
- dbg ("udsl_usb_probe: failed to register ATM device!");
- goto fail;
- }
-
- instance->atm_dev->ci_range.vpi_bits = ATM_CI_MAX;
- instance->atm_dev->ci_range.vci_bits = ATM_CI_MAX;
- instance->atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
-
- /* temp init ATM device, set to 128kbit */
- instance->atm_dev->link_rate = 128 * 1000 / 424;
-
- /* set MAC address, it is stored in the serial number */
- memset (instance->atm_dev->esi, 0, sizeof (instance->atm_dev->esi));
- if (usb_string (dev, dev->descriptor.iSerialNumber, mac_str, sizeof (mac_str))
== 12)
- for (i = 0; i < 6; i++)
- instance->atm_dev->esi [i] = (hex2int (mac_str [i * 2]) * 16)
+ (hex2int (mac_str [i * 2 + 1]));
-
- /* device description */
- buf = instance->description;
- length = sizeof (instance->description);
-
- if ((i = usb_string (dev, dev->descriptor.iProduct, buf, length)) < 0)
- goto finish;
-
- buf += i;
- length -= i;
-
- i = snprintf (buf, length, " (");
- buf += i;
- length -= i;
-
- if (length <= 0 || (i = usb_make_path (dev, buf, length)) < 0)
- goto finish;
-
- buf += i;
- length -= i;
-
- snprintf (buf, length, ")");
-
-finish:
- /* ready for ATM callbacks */
- wmb ();
- instance->atm_dev->dev_data = instance;
-
- return instance;
-
-fail:
- for (i = 0; i < num_snd_bufs; i++)
- kfree (instance->send_buffers [i].base);
-
- for (i = 0; i < num_snd_urbs; i++)
- usb_free_urb (instance->senders [i].urb);
-
- for (i = 0; i < num_rcv_bufs; i++)
- kfree (instance->receive_buffers [i].base);
-
- for (i = 0; i < num_rcv_urbs; i++)
- usb_free_urb (instance->receivers [i].urb);
-
- kfree (instance);
-
- return NULL;
-}
-
-static void udsl_usb_disconnect (struct usb_device *dev, void *ptr)
-{
- struct udsl_instance_data *instance = ptr;
- struct list_head *pos;
- unsigned int count;
- int result, i;
-
- dbg ("udsl_usb_disconnect entered");
-
- if (!instance) {
- dbg ("udsl_usb_disconnect: NULL instance!");
- return;
- }
-
- /* receive finalize */
- tasklet_disable (&instance->receive_tasklet);
-
- for (i = 0; i < num_rcv_urbs; i++)
- if ((result = usb_unlink_urb (instance->receivers [i].urb)) < 0)
- dbg ("udsl_usb_disconnect: usb_unlink_urb on receive urb %d
returned %d", i, result);
-
- /* wait for completion handlers to finish */
- do {
- count = 0;
- spin_lock_irq (&instance->receive_lock);
- list_for_each (pos, &instance->spare_receivers)
- if (++count > num_rcv_urbs)
- panic (__FILE__ ": memory corruption detected at line
%d!\n", __LINE__);
- spin_unlock_irq (&instance->receive_lock);
-
- dbg ("udsl_usb_disconnect: found %u spare receivers", count);
-
- if (count == num_rcv_urbs)
- break;
-
- set_current_state (TASK_RUNNING);
- schedule ();
- } while (1);
-
- /* no need to take the spinlock */
- INIT_LIST_HEAD (&instance->filled_receive_buffers);
- INIT_LIST_HEAD (&instance->spare_receive_buffers);
-
- tasklet_enable (&instance->receive_tasklet);
-
- for (i = 0; i < num_rcv_urbs; i++)
- usb_free_urb (instance->receivers [i].urb);
-
- for (i = 0; i < num_rcv_bufs; i++)
- kfree (instance->receive_buffers [i].base);
-
- /* send finalize */
- tasklet_disable (&instance->send_tasklet);
-
- for (i = 0; i < num_snd_urbs; i++)
- if ((result = usb_unlink_urb (instance->senders [i].urb)) < 0)
- dbg ("udsl_usb_disconnect: usb_unlink_urb on send urb %d
returned %d", i, result);
-
- /* wait for completion handlers to finish */
- do {
- count = 0;
- spin_lock_irq (&instance->send_lock);
- list_for_each (pos, &instance->spare_senders)
- if (++count > num_snd_urbs)
- panic (__FILE__ ": memory corruption detected at line
%d!\n", __LINE__);
- spin_unlock_irq (&instance->send_lock);
-
- dbg ("udsl_usb_disconnect: found %u spare senders", count);
-
- if (count == num_snd_urbs)
- break;
-
- set_current_state (TASK_RUNNING);
- schedule ();
- } while (1);
-
- /* no need to take the spinlock */
- INIT_LIST_HEAD (&instance->spare_senders);
- INIT_LIST_HEAD (&instance->spare_send_buffers);
- instance->current_buffer = NULL;
-
- tasklet_enable (&instance->send_tasklet);
-
- for (i = 0; i < num_snd_urbs; i++)
- usb_free_urb (instance->senders [i].urb);
-
- for (i = 0; i < num_snd_bufs; i++)
- kfree (instance->send_buffers [i].base);
-
- wmb ();
- instance->usb_dev = NULL;
-
- /* ATM finalize */
- shutdown_atm_dev (instance->atm_dev); /* frees instance, kills tasklets */
-}
-
-
-/***********
-** init **
-***********/
-
-static int __init udsl_usb_init (void)
-{
- struct sk_buff *skb; /* dummy for sizeof */
-
- dbg ("udsl_usb_init: driver version " DRIVER_VERSION);
-
- if (sizeof (struct udsl_control) > sizeof (skb->cb)) {
- printk (KERN_ERR __FILE__ ": unusable with this kernel!\n");
- return -EIO;
- }
-
- if ((num_rcv_urbs > UDSL_MAX_RCV_URBS) || (num_snd_urbs > UDSL_MAX_SND_URBS) ||
- (num_rcv_bufs > UDSL_MAX_RCV_BUFS) || (num_snd_bufs > UDSL_MAX_SND_BUFS) ||
- (rcv_buf_size > UDSL_MAX_RCV_BUF_SIZE) || (snd_buf_size >
UDSL_MAX_SND_BUF_SIZE))
- return -EINVAL;
-
- return usb_register (&udsl_usb_driver);
-}
-
-static void __exit udsl_usb_cleanup (void)
-{
- dbg ("udsl_usb_cleanup entered");
-
- usb_deregister (&udsl_usb_driver);
-}
-
-module_init (udsl_usb_init);
-module_exit (udsl_usb_cleanup);
-
-MODULE_AUTHOR (DRIVER_AUTHOR);
-MODULE_DESCRIPTION (DRIVER_DESC);
-MODULE_LICENSE ("GPL");
-
-
-/************
-** debug **
-************/
-
-#ifdef VERBOSE_DEBUG
-static int udsl_print_packet (const unsigned char *data, int len)
-{
- unsigned char buffer [256];
- int i = 0, j = 0;
-
- for (i = 0; i < len;) {
- buffer [0] = '\0';
- sprintf (buffer, "%.3d :", i);
- for (j = 0; (j < 16) && (i < len); j++, i++) {
- sprintf (buffer, "%s %2.2x", buffer, data [i]);
- }
- dbg ("%s", buffer);
- }
- return i;
-}
-#endif
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