diff options
Diffstat (limited to 'drivers/isdn/gigaset/usb-gigaset.c')
| -rw-r--r-- | drivers/isdn/gigaset/usb-gigaset.c | 1008 |
1 files changed, 1008 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c new file mode 100644 index 00000000000..323fc7349de --- /dev/null +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -0,0 +1,1008 @@ +/* + * 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"); |