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tmp_suning_uos_patched/drivers/isdn/gigaset/usb-gigaset.c
Hansjoerg Lipp 07dc1f9f2f [PATCH] isdn4linux: Siemens Gigaset drivers - M105 USB DECT adapter 
And: Tilman Schmidt <tilman@imap.cc>

This patch adds the connection-specific module "usb_gigaset", the hardware
driver for Gigaset base stations connected via the M105 USB DECT adapter.  It
contains the code for handling probe/disconnect, AT command/response
transmission, and call setup and termination, as well as handling asynchronous
data transfers, PPP framing, byte stuffing, and flow control.

Signed-off-by: Hansjoerg Lipp <hjlipp@web.de>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 08:57:06 -08:00

1009 lines
28 KiB
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Raw Blame History

/*
* USB driver for Gigaset 307x directly or using M105 Data.
*
* Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>
* and Hansjoerg Lipp <hjlipp@web.de>.
*
* This driver was derived from the USB skeleton driver by
* Greg Kroah-Hartman <greg@kroah.com>
*
* =====================================================================
* 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.
* =====================================================================
* ToDo: ...
* =====================================================================
* Version: $Id: usb-gigaset.c,v 1.85.4.18 2006/02/04 18:28:16 hjlipp Exp $
* =====================================================================
*/
#include "gigaset.h"
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
/* Version Information */
#define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>"
#define DRIVER_DESC "USB Driver for Gigaset 307x using M105"
/* Module parameters */
static int startmode = SM_ISDN;
static int cidmode = 1;
module_param(startmode, int, S_IRUGO);
module_param(cidmode, int, S_IRUGO);
MODULE_PARM_DESC(startmode, "start in isdn4linux mode");
MODULE_PARM_DESC(cidmode, "Call-ID mode");
#define GIGASET_MINORS 1
#define GIGASET_MINOR 8
#define GIGASET_MODULENAME "usb_gigaset"
#define GIGASET_DEVFSNAME "gig/usb/"
#define GIGASET_DEVNAME "ttyGU"
#define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256
/* Values for the Gigaset M105 Data */
#define USB_M105_VENDOR_ID 0x0681
#define USB_M105_PRODUCT_ID 0x0009
/* table of devices that work with this driver */
static struct usb_device_id gigaset_table [] = {
{ USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, gigaset_table);
/* Get a minor range for your devices from the usb maintainer */
#define USB_SKEL_MINOR_BASE 200
/*
* Control requests (empty fields: 00)
*
* RT|RQ|VALUE|INDEX|LEN |DATA
* In:
* C1 08 01
* Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:?
* C1 0F ll ll
* Get device information/status (llll: 0x200 and 0x40 seen).
* Real size: I only saw MIN(llll,0x64).
* Contents: seems to be always the same...
* offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes)
* offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0"
* rest: ?
* Out:
* 41 11
* Initialize/reset device ?
* 41 00 xx 00
* ? (xx=00 or 01; 01 on start, 00 on close)
* 41 07 vv mm
* Set/clear flags vv=value, mm=mask (see RQ 08)
* 41 12 xx
* Used before the following configuration requests are issued
* (with xx=0x0f). I've seen other values<0xf, though.
* 41 01 xx xx
* Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1.
* 41 03 ps bb
* Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity
* [ 0x30: m, 0x40: s ]
* [s: 0: 1 stop bit; 1: 1.5; 2: 2]
* bb: bits/byte (seen 7 and 8)
* 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00
* ??
* Initialization: 01, 40, 00, 00
* Open device: 00 40, 00, 00
* yy and zz seem to be equal, either 0x00 or 0x0a
* (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80)
* 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13
* Used after every "configuration sequence" (RQ 12, RQs 01/03/13).
* xx is usually 0x00 but was 0x7e before starting data transfer
* in unimodem mode. So, this might be an array of characters that need
* special treatment ("commit all bufferd data"?), 11=^Q, 13=^S.
*
* Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two
* flags per packet.
*/
static int gigaset_probe(struct usb_interface *interface,
const struct usb_device_id *id);
static void gigaset_disconnect(struct usb_interface *interface);
static struct gigaset_driver *driver = NULL;
static struct cardstate *cardstate = NULL;
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver gigaset_usb_driver = {
.name = GIGASET_MODULENAME,
.probe = gigaset_probe,
.disconnect = gigaset_disconnect,
.id_table = gigaset_table,
};
struct usb_cardstate {
struct usb_device *udev; /* save off the usb device pointer */
struct usb_interface *interface; /* the interface for this device */
atomic_t busy; /* bulk output in progress */
/* Output buffer for commands (M105: and data)*/
unsigned char *bulk_out_buffer; /* the buffer to send data */
int bulk_out_size; /* the size of the send buffer */
__u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
struct urb *bulk_out_urb; /* the urb used to transmit data */
/* Input buffer for command responses (M105: and data)*/
int rcvbuf_size; /* the size of the receive buffer */
struct urb *read_urb; /* the urb used to receive data */
__u8 int_in_endpointAddr; /* the address of the bulk in endpoint */
char bchars[6]; /* req. 0x19 */
};
struct usb_bc_state {};
static inline unsigned tiocm_to_gigaset(unsigned state)
{
return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0);
}
#ifdef CONFIG_GIGASET_UNDOCREQ
/* WARNING: EXPERIMENTAL! */
static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
unsigned new_state)
{
unsigned mask, val;
int r;
mask = tiocm_to_gigaset(old_state ^ new_state);
val = tiocm_to_gigaset(new_state);
dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask);
r = usb_control_msg(cs->hw.usb->udev,
usb_sndctrlpipe(cs->hw.usb->udev, 0), 7, 0x41,
(val & 0xff) | ((mask & 0xff) << 8), 0,
NULL, 0, 2000 /*timeout??*/); // don't use this in an interrupt/BH
if (r < 0)
return r;
//..
return 0;
}
static int set_value(struct cardstate *cs, u8 req, u16 val)
{
int r, r2;
dbg(DEBUG_USBREQ, "request %02x (%04x)", (unsigned)req, (unsigned)val);
r = usb_control_msg(cs->hw.usb->udev,
usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x12, 0x41,
0xf /*?*/, 0,
NULL, 0, 2000 /*?*/); /* no idea, what this does */
if (r < 0) {
err("error %d on request 0x12", -r);
return r;
}
r = usb_control_msg(cs->hw.usb->udev,
usb_sndctrlpipe(cs->hw.usb->udev, 0), req, 0x41,
val, 0,
NULL, 0, 2000 /*?*/);
if (r < 0)
err("error %d on request 0x%02x", -r, (unsigned)req);
r2 = usb_control_msg(cs->hw.usb->udev,
usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41,
0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/);
if (r2 < 0)
err("error %d on request 0x19", -r2);
return r < 0 ? r : (r2 < 0 ? r2 : 0);
}
/* WARNING: HIGHLY EXPERIMENTAL! */
// don't use this in an interrupt/BH
static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
{
u16 val;
u32 rate;
cflag &= CBAUD;
switch (cflag) {
//FIXME more values?
case B300: rate = 300; break;
case B600: rate = 600; break;
case B1200: rate = 1200; break;
case B2400: rate = 2400; break;
case B4800: rate = 4800; break;
case B9600: rate = 9600; break;
case B19200: rate = 19200; break;
case B38400: rate = 38400; break;
case B57600: rate = 57600; break;
case B115200: rate = 115200; break;
default:
rate = 9600;
err("unsupported baudrate request 0x%x,"
" using default of B9600", cflag);
}
val = 0x383fff / rate + 1;
return set_value(cs, 1, val);
}
/* WARNING: HIGHLY EXPERIMENTAL! */
// don't use this in an interrupt/BH
static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
{
u16 val = 0;
/* set the parity */
if (cflag & PARENB)
val |= (cflag & PARODD) ? 0x10 : 0x20;
/* set the number of data bits */
switch (cflag & CSIZE) {
case CS5:
val |= 5 << 8; break;
case CS6:
val |= 6 << 8; break;
case CS7:
val |= 7 << 8; break;
case CS8:
val |= 8 << 8; break;
default:
err("CSIZE was not CS5-CS8, using default of 8");
val |= 8 << 8;
break;
}
/* set the number of stop bits */
if (cflag & CSTOPB) {
if ((cflag & CSIZE) == CS5)
val |= 1; /* 1.5 stop bits */ //FIXME is this okay?
else
val |= 2; /* 2 stop bits */
}
return set_value(cs, 3, val);
}
#else
static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
unsigned new_state)
{
return -EINVAL;
}
static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
{
return -EINVAL;
}
static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
{
return -EINVAL;
}
#endif
/*================================================================================================================*/
static int gigaset_init_bchannel(struct bc_state *bcs)
{
/* nothing to do for M10x */
gigaset_bchannel_up(bcs);
return 0;
}
static int gigaset_close_bchannel(struct bc_state *bcs)
{
/* nothing to do for M10x */
gigaset_bchannel_down(bcs);
return 0;
}
//void send_ack_to_LL(void *data);
static int write_modem(struct cardstate *cs);
static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb);
/* Handling of send queue. If there is already a skb opened, put data to
* the transfer buffer by calling "write_modem". Otherwise take a new skb out of the queue.
* This function will be called by the ISR via "transmit_chars" (USB: B-Channel Bulk callback handler
* via immediate task queue) or by writebuf_from_LL if the LL wants to transmit data.
*/
static void gigaset_modem_fill(unsigned long data)
{
struct cardstate *cs = (struct cardstate *) data;
struct bc_state *bcs = &cs->bcs[0]; /* only one channel */
struct cmdbuf_t *cb;
unsigned long flags;
int again;
dbg(DEBUG_OUTPUT, "modem_fill");
if (atomic_read(&cs->hw.usb->busy)) {
dbg(DEBUG_OUTPUT, "modem_fill: busy");
return;
}
do {
again = 0;
if (!bcs->tx_skb) { /* no skb is being sent */
spin_lock_irqsave(&cs->cmdlock, flags);
cb = cs->cmdbuf;
spin_unlock_irqrestore(&cs->cmdlock, flags);
if (cb) { /* commands to send? */
dbg(DEBUG_OUTPUT, "modem_fill: cb");
if (send_cb(cs, cb) < 0) {
dbg(DEBUG_OUTPUT,
"modem_fill: send_cb failed");
again = 1; /* no callback will be called! */
}
} else { /* skbs to send? */
bcs->tx_skb = skb_dequeue(&bcs->squeue);
if (bcs->tx_skb)
dbg(DEBUG_INTR,
"Dequeued skb (Adr: %lx)!",
(unsigned long) bcs->tx_skb);
}
}
if (bcs->tx_skb) {
dbg(DEBUG_OUTPUT, "modem_fill: tx_skb");
if (write_modem(cs) < 0) {
dbg(DEBUG_OUTPUT,
"modem_fill: write_modem failed");
// FIXME should we tell the LL?
again = 1; /* no callback will be called! */
}
}
} while (again);
}
/**
* gigaset_read_int_callback
*
* It is called if the data was received from the device. This is almost similiar to
* the interrupt service routine in the serial device.
*/
static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs)
{
int resubmit = 0;
int r;
struct cardstate *cs;
unsigned numbytes;
unsigned char *src;
//unsigned long flags;
struct inbuf_t *inbuf;
IFNULLRET(urb);
inbuf = (struct inbuf_t *) urb->context;
IFNULLRET(inbuf);
//spin_lock_irqsave(&inbuf->lock, flags);
cs = inbuf->cs;
IFNULLGOTO(cs, exit);
IFNULLGOTO(cardstate, exit);
if (!atomic_read(&cs->connected)) {
err("%s: disconnected", __func__);
goto exit;
}
if (!urb->status) {
numbytes = urb->actual_length;
if (numbytes) {
src = inbuf->rcvbuf;
if (unlikely(*src))
warn("%s: There was no leading 0, but 0x%02x!",
__func__, (unsigned) *src);
++src; /* skip leading 0x00 */
--numbytes;
if (gigaset_fill_inbuf(inbuf, src, numbytes)) {
dbg(DEBUG_INTR, "%s-->BH", __func__);
gigaset_schedule_event(inbuf->cs);
}
} else
dbg(DEBUG_INTR, "Received zero block length");
resubmit = 1;
} else {
/* The urb might have been killed. */
dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d",
__func__, urb->status);
if (urb->status != -ENOENT) /* not killed */
resubmit = 1;
}
exit:
//spin_unlock_irqrestore(&inbuf->lock, flags);
if (resubmit) {
r = usb_submit_urb(urb, SLAB_ATOMIC);
if (r)
err("error %d when resubmitting urb.", -r);
}
}
/* This callback routine is called when data was transmitted to a B-Channel.
* Therefore it has to check if there is still data to transmit. This
* happens by calling modem_fill via task queue.
*
*/
static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
{
struct cardstate *cs = (struct cardstate *) urb->context;
IFNULLRET(cs);
#ifdef CONFIG_GIGASET_DEBUG
if (!atomic_read(&cs->connected)) {
err("%s:not connected", __func__);
return;
}
#endif
if (urb->status)
err("bulk transfer failed (status %d)", -urb->status); /* That's all we can do. Communication problems
are handeled by timeouts or network protocols */
atomic_set(&cs->hw.usb->busy, 0);
tasklet_schedule(&cs->write_tasklet);
}
static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
{
struct cmdbuf_t *tcb;
unsigned long flags;
int count;
int status = -ENOENT; // FIXME
struct usb_cardstate *ucs = cs->hw.usb;
do {
if (!cb->len) {
tcb = cb;
spin_lock_irqsave(&cs->cmdlock, flags);
cs->cmdbytes -= cs->curlen;
dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left",
cs->curlen, cs->cmdbytes);
cs->cmdbuf = cb = cb->next;
if (cb) {
cb->prev = NULL;
cs->curlen = cb->len;
} else {
cs->lastcmdbuf = NULL;
cs->curlen = 0;
}
spin_unlock_irqrestore(&cs->cmdlock, flags);
if (tcb->wake_tasklet)
tasklet_schedule(tcb->wake_tasklet);
kfree(tcb);
}
if (cb) {
count = min(cb->len, ucs->bulk_out_size);
usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev,
usb_sndbulkpipe(ucs->udev,
ucs->bulk_out_endpointAddr & 0x0f),
cb->buf + cb->offset, count,
gigaset_write_bulk_callback, cs);
cb->offset += count;
cb->len -= count;
atomic_set(&ucs->busy, 1);
dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count);
status = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC);
if (status) {
atomic_set(&ucs->busy, 0);
err("could not submit urb (error %d).",
-status);
cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */
}
}
} while (cb && status); /* bei Fehler naechster Befehl //FIXME: ist das OK? */
return status;
}
/* Write string into transbuf and send it to modem.
*/
static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf,
int len, struct tasklet_struct *wake_tasklet)
{
struct cmdbuf_t *cb;
unsigned long flags;
gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ?
DEBUG_TRANSCMD : DEBUG_LOCKCMD,
"CMD Transmit", len, buf, 0);
if (!atomic_read(&cs->connected)) {
err("%s: not connected", __func__);
return -ENODEV;
}
if (len <= 0)
return 0;
if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) {
err("%s: out of memory", __func__);
return -ENOMEM;
}
memcpy(cb->buf, buf, len);
cb->len = len;
cb->offset = 0;
cb->next = NULL;
cb->wake_tasklet = wake_tasklet;
spin_lock_irqsave(&cs->cmdlock, flags);
cb->prev = cs->lastcmdbuf;
if (cs->lastcmdbuf)
cs->lastcmdbuf->next = cb;
else {
cs->cmdbuf = cb;
cs->curlen = len;
}
cs->cmdbytes += len;
cs->lastcmdbuf = cb;
spin_unlock_irqrestore(&cs->cmdlock, flags);
tasklet_schedule(&cs->write_tasklet);
return len;
}
static int gigaset_write_room(struct cardstate *cs)
{
unsigned long flags;
unsigned bytes;
spin_lock_irqsave(&cs->cmdlock, flags);
bytes = cs->cmdbytes;
spin_unlock_irqrestore(&cs->cmdlock, flags);
return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0;
}
static int gigaset_chars_in_buffer(struct cardstate *cs)
{
return cs->cmdbytes;
}
static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])
{
#ifdef CONFIG_GIGASET_UNDOCREQ
gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0);
memcpy(cs->hw.usb->bchars, buf, 6);
return usb_control_msg(cs->hw.usb->udev,
usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41,
0, 0, &buf, 6, 2000);
#else
return -EINVAL;
#endif
}
static int gigaset_freebcshw(struct bc_state *bcs)
{
if (!bcs->hw.usb)
return 0;
//FIXME
kfree(bcs->hw.usb);
return 1;
}
/* Initialize the b-channel structure */
static int gigaset_initbcshw(struct bc_state *bcs)
{
bcs->hw.usb = kmalloc(sizeof(struct usb_bc_state), GFP_KERNEL);
if (!bcs->hw.usb)
return 0;
//bcs->hw.usb->trans_flg = READY_TO_TRNSMIT; /* B-Channel ready to transmit */
return 1;
}
static void gigaset_reinitbcshw(struct bc_state *bcs)
{
}
static void gigaset_freecshw(struct cardstate *cs)
{
//FIXME
tasklet_kill(&cs->write_tasklet);
kfree(cs->hw.usb);
}
static int gigaset_initcshw(struct cardstate *cs)
{
struct usb_cardstate *ucs;
cs->hw.usb = ucs =
kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL);
if (!ucs)
return 0;
ucs->bchars[0] = 0;
ucs->bchars[1] = 0;
ucs->bchars[2] = 0;
ucs->bchars[3] = 0;
ucs->bchars[4] = 0x11;
ucs->bchars[5] = 0x13;
ucs->bulk_out_buffer = NULL;
ucs->bulk_out_urb = NULL;
//ucs->urb_cmd_out = NULL;
ucs->read_urb = NULL;
tasklet_init(&cs->write_tasklet,
&gigaset_modem_fill, (unsigned long) cs);
return 1;
}
/* Writes the data of the current open skb into the modem.
* We have to protect against multiple calls until the
* callback handler () is called , due to the fact that we
* are just allowed to send data once to an endpoint. Therefore
* we using "trans_flg" to synchonize ...
*/
static int write_modem(struct cardstate *cs)
{
int ret;
int count;
struct bc_state *bcs = &cs->bcs[0]; /* only one channel */
struct usb_cardstate *ucs = cs->hw.usb;
//unsigned long flags;
IFNULLRETVAL(bcs->tx_skb, -EINVAL);
dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len);
ret = -ENODEV;
IFNULLGOTO(ucs->bulk_out_buffer, error);
IFNULLGOTO(ucs->bulk_out_urb, error);
ret = 0;
if (!bcs->tx_skb->len) {
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
return -EINVAL;
}
/* Copy data to bulk out buffer and // FIXME copying not necessary
* transmit data
*/
count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size);
memcpy(ucs->bulk_out_buffer, bcs->tx_skb->data, count);
skb_pull(bcs->tx_skb, count);
usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev,
usb_sndbulkpipe(ucs->udev,
ucs->bulk_out_endpointAddr & 0x0f),
ucs->bulk_out_buffer, count,
gigaset_write_bulk_callback, cs);
atomic_set(&ucs->busy, 1);
dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count);
ret = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC);
if (ret) {
err("could not submit urb (error %d).", -ret);
atomic_set(&ucs->busy, 0);
}
if (!bcs->tx_skb->len) {
/* skb sent completely */
gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0?
dbg(DEBUG_INTR,
"kfree skb (Adr: %lx)!", (unsigned long) bcs->tx_skb);
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
}
return ret;
error:
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
return ret;
}
static int gigaset_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
int retval;
struct usb_device *udev = interface_to_usbdev(interface);
unsigned int ifnum;
struct usb_host_interface *hostif;
struct cardstate *cs = NULL;
struct usb_cardstate *ucs = NULL;
//struct usb_interface_descriptor *iface_desc;
struct usb_endpoint_descriptor *endpoint;
//isdn_ctrl command;
int buffer_size;
int alt;
//unsigned long flags;
info("%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)",
__func__, le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct));
retval = -ENODEV; //FIXME
/* See if the device offered us matches what we can accept */
if ((le16_to_cpu(udev->descriptor.idVendor != USB_M105_VENDOR_ID)) ||
(le16_to_cpu(udev->descriptor.idProduct != USB_M105_PRODUCT_ID)))
return -ENODEV;
/* this starts to become ascii art... */
hostif = interface->cur_altsetting;
alt = hostif->desc.bAlternateSetting;
ifnum = hostif->desc.bInterfaceNumber; // FIXME ?
if (alt != 0 || ifnum != 0) {
warn("ifnum %d, alt %d", ifnum, alt);
return -ENODEV;
}
/* Reject application specific intefaces
*
*/
if (hostif->desc.bInterfaceClass != 255) {
info("%s: Device matched, but iface_desc[%d]->bInterfaceClass==%d !",
__func__, ifnum, hostif->desc.bInterfaceClass);
return -ENODEV;
}
info("%s: Device matched ... !", __func__);
cs = gigaset_getunassignedcs(driver);
if (!cs) {
warn("No free cardstate!");
return -ENODEV;
}
ucs = cs->hw.usb;
#if 0
if (usb_set_configuration(udev, udev->config[0].desc.bConfigurationValue) < 0) {
warn("set_configuration failed");
goto error;
}
if (usb_set_interface(udev, ifnum/*==0*/, alt/*==0*/) < 0) {
warn("usb_set_interface failed, device %d interface %d altsetting %d",
udev->devnum, ifnum, alt);
goto error;
}
#endif
/* set up the endpoint information */
/* check out the endpoints */
/* We will get 2 endpoints: One for sending commands to the device (bulk out) and one to
* poll messages from the device(int in).
* Therefore we will have an almost similiar situation as with our serial port handler.
* If an connection will be established, we will have to create data in/out pipes
* dynamically...
*/
endpoint = &hostif->endpoint[0].desc;
buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
ucs->bulk_out_size = buffer_size;
ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress;
ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!ucs->bulk_out_buffer) {
err("Couldn't allocate bulk_out_buffer");
retval = -ENOMEM;
goto error;
}
ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL);
if (!ucs->bulk_out_urb) {
err("Couldn't allocate bulk_out_buffer");
retval = -ENOMEM;
goto error;
}
endpoint = &hostif->endpoint[1].desc;
atomic_set(&ucs->busy, 0);
ucs->udev = udev;
ucs->interface = interface;
ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL);
if (!ucs->read_urb) {
err("No free urbs available");
retval = -ENOMEM;
goto error;
}
buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
ucs->rcvbuf_size = buffer_size;
ucs->int_in_endpointAddr = endpoint->bEndpointAddress;
cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL);
if (!cs->inbuf[0].rcvbuf) {
err("Couldn't allocate rcvbuf");
retval = -ENOMEM;
goto error;
}
/* Fill the interrupt urb and send it to the core */
usb_fill_int_urb(ucs->read_urb, udev,
usb_rcvintpipe(udev,
endpoint->bEndpointAddress & 0x0f),
cs->inbuf[0].rcvbuf, buffer_size,
gigaset_read_int_callback,
cs->inbuf + 0, endpoint->bInterval);
retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL);
if (retval) {
err("Could not submit URB!");
goto error;
}
/* tell common part that the device is ready */
if (startmode == SM_LOCKED)
atomic_set(&cs->mstate, MS_LOCKED);
if (!gigaset_start(cs)) {
tasklet_kill(&cs->write_tasklet);
retval = -ENODEV; //FIXME
goto error;
}
/* save address of controller structure */
usb_set_intfdata(interface, cs);
/* set up device sysfs */
gigaset_init_dev_sysfs(interface);
return 0;
error:
if (ucs->read_urb)
usb_kill_urb(ucs->read_urb);
kfree(ucs->bulk_out_buffer);
if (ucs->bulk_out_urb != NULL)
usb_free_urb(ucs->bulk_out_urb);
kfree(cs->inbuf[0].rcvbuf);
if (ucs->read_urb != NULL)
usb_free_urb(ucs->read_urb);
ucs->read_urb = ucs->bulk_out_urb = NULL;
cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
gigaset_unassign(cs);
return retval;
}
/**
* skel_disconnect
*/
static void gigaset_disconnect(struct usb_interface *interface)
{
struct cardstate *cs;
struct usb_cardstate *ucs;
cs = usb_get_intfdata(interface);
/* clear device sysfs */
gigaset_free_dev_sysfs(interface);
usb_set_intfdata(interface, NULL);
ucs = cs->hw.usb;
usb_kill_urb(ucs->read_urb);
//info("GigaSet USB device #%d will be disconnected", minor);
gigaset_stop(cs);
tasklet_kill(&cs->write_tasklet);
usb_kill_urb(ucs->bulk_out_urb); /* FIXME: nur, wenn noetig */
//usb_kill_urb(ucs->urb_cmd_out); /* FIXME: nur, wenn noetig */
kfree(ucs->bulk_out_buffer);
if (ucs->bulk_out_urb != NULL)
usb_free_urb(ucs->bulk_out_urb);
//if(ucs->urb_cmd_out != NULL)
// usb_free_urb(ucs->urb_cmd_out);
kfree(cs->inbuf[0].rcvbuf);
if (ucs->read_urb != NULL)
usb_free_urb(ucs->read_urb);
ucs->read_urb = ucs->bulk_out_urb/*=ucs->urb_cmd_out*/=NULL;
cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
gigaset_unassign(cs);
}
static struct gigaset_ops ops = {
gigaset_write_cmd,
gigaset_write_room,
gigaset_chars_in_buffer,
gigaset_brkchars,
gigaset_init_bchannel,
gigaset_close_bchannel,
gigaset_initbcshw,
gigaset_freebcshw,
gigaset_reinitbcshw,
gigaset_initcshw,
gigaset_freecshw,
gigaset_set_modem_ctrl,
gigaset_baud_rate,
gigaset_set_line_ctrl,
gigaset_m10x_send_skb,
gigaset_m10x_input,
};
/**
* usb_gigaset_init
* This function is called while kernel-module is loaded
*/
static int __init usb_gigaset_init(void)
{
int result;
/* allocate memory for our driver state and intialize it */
if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS,
GIGASET_MODULENAME, GIGASET_DEVNAME,
GIGASET_DEVFSNAME, &ops,
THIS_MODULE)) == NULL)
goto error;
/* allocate memory for our device state and intialize it */
cardstate = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME);
if (!cardstate)
goto error;
/* register this driver with the USB subsystem */
result = usb_register(&gigaset_usb_driver);
if (result < 0) {
err("usb_gigaset: usb_register failed (error %d)",
-result);
goto error;
}
info(DRIVER_AUTHOR);
info(DRIVER_DESC);
return 0;
error: if (cardstate)
gigaset_freecs(cardstate);
cardstate = NULL;
if (driver)
gigaset_freedriver(driver);
driver = NULL;
return -1;
}
/**
* usb_gigaset_exit
* This function is called while unloading the kernel-module
*/
static void __exit usb_gigaset_exit(void)
{
gigaset_blockdriver(driver); /* => probe will fail
* => no gigaset_start any more
*/
gigaset_shutdown(cardstate);
/* from now on, no isdn callback should be possible */
/* deregister this driver with the USB subsystem */
usb_deregister(&gigaset_usb_driver);
/* this will call the disconnect-callback */
/* from now on, no disconnect/probe callback should be running */
gigaset_freecs(cardstate);
cardstate = NULL;
gigaset_freedriver(driver);
driver = NULL;
}
module_init(usb_gigaset_init);
module_exit(usb_gigaset_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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