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linux/drivers/isdn/hisax/hfc_usb.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

1609 lines
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/*
* hfc_usb.c
*
* $Id: hfc_usb.c,v 2.3.2.24 2007/10/14 08:40:29 mbachem Exp $
*
* modular HiSax ISDN driver for Colognechip HFC-S USB chip
*
* Authors : Peter Sprenger (sprenger@moving-bytes.de)
* Martin Bachem (m.bachem@gmx.de, info@colognechip.com)
*
* based on the first hfc_usb driver of
* Werner Cornelius (werner@isdn-development.de)
*
* 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* See Version Histroy at the bottom of this file
*
*/
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel_stat.h>
#include <linux/usb.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include "hisax.h"
#include "hisax_if.h"
#include "hfc_usb.h"
static const char *hfcusb_revision =
"$Revision: 2.3.2.24 $ $Date: 2007/10/14 08:40:29 $ ";
/* Hisax debug support
* debug flags defined in hfc_usb.h as HFCUSB_DBG_[*]
*/
#define __debug_variable hfc_debug
#include "hisax_debug.h"
static u_int debug;
module_param(debug, uint, 0);
static int hfc_debug;
/* private vendor specific data */
typedef struct {
__u8 led_scheme; // led display scheme
signed short led_bits[8]; // array of 8 possible LED bitmask settings
char *vend_name; // device name
} hfcsusb_vdata;
/* VID/PID device list */
static struct usb_device_id hfcusb_idtab[] = {
{
USB_DEVICE(0x0959, 0x2bd0),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_OFF, {4, 0, 2, 1},
"ISDN USB TA (Cologne Chip HFC-S USB based)"}),
},
{
USB_DEVICE(0x0675, 0x1688),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {1, 2, 0, 0},
"DrayTek miniVigor 128 USB ISDN TA"}),
},
{
USB_DEVICE(0x07b0, 0x0007),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {0x80, -64, -32, -16},
"Billion tiny USB ISDN TA 128"}),
},
{
USB_DEVICE(0x0742, 0x2008),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {4, 0, 2, 1},
"Stollmann USB TA"}),
},
{
USB_DEVICE(0x0742, 0x2009),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {4, 0, 2, 1},
"Aceex USB ISDN TA"}),
},
{
USB_DEVICE(0x0742, 0x200A),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {4, 0, 2, 1},
"OEM USB ISDN TA"}),
},
{
USB_DEVICE(0x08e3, 0x0301),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {2, 0, 1, 4},
"Olitec USB RNIS"}),
},
{
USB_DEVICE(0x07fa, 0x0846),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {0x80, -64, -32, -16},
"Bewan Modem RNIS USB"}),
},
{
USB_DEVICE(0x07fa, 0x0847),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {0x80, -64, -32, -16},
"Djinn Numeris USB"}),
},
{
USB_DEVICE(0x07b0, 0x0006),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {0x80, -64, -32, -16},
"Twister ISDN TA"}),
},
{
USB_DEVICE(0x071d, 0x1005),
.driver_info = (unsigned long) &((hfcsusb_vdata)
{LED_SCHEME1, {0x02, 0, 0x01, 0x04},
"Eicon DIVA USB 4.0"}),
},
{ }
};
/* structure defining input+output fifos (interrupt/bulk mode) */
struct usb_fifo; /* forward definition */
typedef struct iso_urb_struct {
struct urb *purb;
__u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */
struct usb_fifo *owner_fifo; /* pointer to owner fifo */
} iso_urb_struct;
struct hfcusb_data; /* forward definition */
typedef struct usb_fifo {
int fifonum; /* fifo index attached to this structure */
int active; /* fifo is currently active */
struct hfcusb_data *hfc; /* pointer to main structure */
int pipe; /* address of endpoint */
__u8 usb_packet_maxlen; /* maximum length for usb transfer */
unsigned int max_size; /* maximum size of receive/send packet */
__u8 intervall; /* interrupt interval */
struct sk_buff *skbuff; /* actual used buffer */
struct urb *urb; /* transfer structure for usb routines */
__u8 buffer[128]; /* buffer incoming/outgoing data */
int bit_line; /* how much bits are in the fifo? */
volatile __u8 usb_transfer_mode; /* switched between ISO and INT */
iso_urb_struct iso[2]; /* need two urbs to have one always for pending */
struct hisax_if *hif; /* hisax interface */
int delete_flg; /* only delete skbuff once */
int last_urblen; /* remember length of last packet */
} usb_fifo;
/* structure holding all data for one device */
typedef struct hfcusb_data {
/* HiSax Interface for loadable Layer1 drivers */
struct hisax_d_if d_if; /* see hisax_if.h */
struct hisax_b_if b_if[2]; /* see hisax_if.h */
int protocol;
struct usb_device *dev; /* our device */
int if_used; /* used interface number */
int alt_used; /* used alternate config */
int ctrl_paksize; /* control pipe packet size */
int ctrl_in_pipe, /* handles for control pipe */
ctrl_out_pipe;
int cfg_used; /* configuration index used */
int vend_idx; /* vendor found */
int b_mode[2]; /* B-channel mode */
int l1_activated; /* layer 1 activated */
int disc_flag; /* TRUE if device was disonnected to avoid some USB actions */
int packet_size, iso_packet_size;
/* control pipe background handling */
ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */
volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */
struct urb *ctrl_urb; /* transfer structure for control channel */
struct usb_ctrlrequest ctrl_write; /* buffer for control write request */
struct usb_ctrlrequest ctrl_read; /* same for read request */
__u8 old_led_state, led_state;
volatile __u8 threshold_mask; /* threshold actually reported */
volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */
usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */
volatile __u8 l1_state; /* actual l1 state */
struct timer_list t3_timer; /* timer 3 for activation/deactivation */
struct timer_list t4_timer; /* timer 4 for activation/deactivation */
} hfcusb_data;
static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len,
int finish);
static inline const char *
symbolic(struct hfcusb_symbolic_list list[], const int num)
{
int i;
for (i = 0; list[i].name != NULL; i++)
if (list[i].num == num)
return (list[i].name);
return "<unknown ERROR>";
}
static void
ctrl_start_transfer(hfcusb_data * hfc)
{
if (hfc->ctrl_cnt) {
hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe;
hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write;
hfc->ctrl_urb->transfer_buffer = NULL;
hfc->ctrl_urb->transfer_buffer_length = 0;
hfc->ctrl_write.wIndex =
cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg);
hfc->ctrl_write.wValue =
cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val);
usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
}
} /* ctrl_start_transfer */
static int
queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action)
{
ctrl_buft *buf;
if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE)
return (1); /* no space left */
buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */
buf->hfc_reg = reg;
buf->reg_val = val;
buf->action = action;
if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
hfc->ctrl_in_idx = 0; /* pointer wrap */
if (++hfc->ctrl_cnt == 1)
ctrl_start_transfer(hfc);
return (0);
}
static void
ctrl_complete(struct urb *urb)
{
hfcusb_data *hfc = (hfcusb_data *) urb->context;
ctrl_buft *buf;
urb->dev = hfc->dev;
if (hfc->ctrl_cnt) {
buf = &hfc->ctrl_buff[hfc->ctrl_out_idx];
hfc->ctrl_cnt--; /* decrement actual count */
if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
hfc->ctrl_out_idx = 0; /* pointer wrap */
ctrl_start_transfer(hfc); /* start next transfer */
}
}
/* write led data to auxport & invert if necessary */
static void
write_led(hfcusb_data * hfc, __u8 led_state)
{
if (led_state != hfc->old_led_state) {
hfc->old_led_state = led_state;
queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1);
}
}
static void
set_led_bit(hfcusb_data * hfc, signed short led_bits, int on)
{
if (on) {
if (led_bits < 0)
hfc->led_state &= ~abs(led_bits);
else
hfc->led_state |= led_bits;
} else {
if (led_bits < 0)
hfc->led_state |= abs(led_bits);
else
hfc->led_state &= ~led_bits;
}
}
/* handle LED requests */
static void
handle_led(hfcusb_data * hfc, int event)
{
hfcsusb_vdata *driver_info =
(hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info;
/* if no scheme -> no LED action */
if (driver_info->led_scheme == LED_OFF)
return;
switch (event) {
case LED_POWER_ON:
set_led_bit(hfc, driver_info->led_bits[0], 1);
set_led_bit(hfc, driver_info->led_bits[1], 0);
set_led_bit(hfc, driver_info->led_bits[2], 0);
set_led_bit(hfc, driver_info->led_bits[3], 0);
break;
case LED_POWER_OFF:
set_led_bit(hfc, driver_info->led_bits[0], 0);
set_led_bit(hfc, driver_info->led_bits[1], 0);
set_led_bit(hfc, driver_info->led_bits[2], 0);
set_led_bit(hfc, driver_info->led_bits[3], 0);
break;
case LED_S0_ON:
set_led_bit(hfc, driver_info->led_bits[1], 1);
break;
case LED_S0_OFF:
set_led_bit(hfc, driver_info->led_bits[1], 0);
break;
case LED_B1_ON:
set_led_bit(hfc, driver_info->led_bits[2], 1);
break;
case LED_B1_OFF:
set_led_bit(hfc, driver_info->led_bits[2], 0);
break;
case LED_B2_ON:
set_led_bit(hfc, driver_info->led_bits[3], 1);
break;
case LED_B2_OFF:
set_led_bit(hfc, driver_info->led_bits[3], 0);
break;
}
write_led(hfc, hfc->led_state);
}
/* ISDN l1 timer T3 expires */
static void
l1_timer_expire_t3(hfcusb_data * hfc)
{
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
NULL);
DBG(HFCUSB_DBG_STATES,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
hfc->l1_activated = 0;
handle_led(hfc, LED_S0_OFF);
/* deactivate : */
queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
queue_control_request(hfc, HFCUSB_STATES, 3, 1);
}
/* ISDN l1 timer T4 expires */
static void
l1_timer_expire_t4(hfcusb_data * hfc)
{
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
NULL);
DBG(HFCUSB_DBG_STATES,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
hfc->l1_activated = 0;
handle_led(hfc, LED_S0_OFF);
}
/* S0 state changed */
static void
s0_state_handler(hfcusb_data * hfc, __u8 state)
{
__u8 old_state;
old_state = hfc->l1_state;
if (state == old_state || state < 1 || state > 8)
return;
DBG(HFCUSB_DBG_STATES, "HFC-S USB: S0 statechange(%d -> %d)",
old_state, state);
if (state < 4 || state == 7 || state == 8) {
if (timer_pending(&hfc->t3_timer))
del_timer(&hfc->t3_timer);
DBG(HFCUSB_DBG_STATES, "HFC-S USB: T3 deactivated");
}
if (state >= 7) {
if (timer_pending(&hfc->t4_timer))
del_timer(&hfc->t4_timer);
DBG(HFCUSB_DBG_STATES, "HFC-S USB: T4 deactivated");
}
if (state == 7 && !hfc->l1_activated) {
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
PH_ACTIVATE | INDICATION, NULL);
DBG(HFCUSB_DBG_STATES, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
hfc->l1_activated = 1;
handle_led(hfc, LED_S0_ON);
} else if (state <= 3 /* && activated */ ) {
if (old_state == 7 || old_state == 8) {
DBG(HFCUSB_DBG_STATES, "HFC-S USB: T4 activated");
if (!timer_pending(&hfc->t4_timer)) {
hfc->t4_timer.expires =
jiffies + (HFC_TIMER_T4 * HZ) / 1000;
add_timer(&hfc->t4_timer);
}
} else {
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
PH_DEACTIVATE | INDICATION,
NULL);
DBG(HFCUSB_DBG_STATES,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent");
hfc->l1_activated = 0;
handle_led(hfc, LED_S0_OFF);
}
}
hfc->l1_state = state;
}
static void
fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
void *buf, int num_packets, int packet_size, int interval,
usb_complete_t complete, void *context)
{
int k;
urb->dev = dev;
urb->pipe = pipe;
urb->complete = complete;
urb->number_of_packets = num_packets;
urb->transfer_buffer_length = packet_size * num_packets;
urb->context = context;
urb->transfer_buffer = buf;
urb->transfer_flags = URB_ISO_ASAP;
urb->actual_length = 0;
urb->interval = interval;
for (k = 0; k < num_packets; k++) {
urb->iso_frame_desc[k].offset = packet_size * k;
urb->iso_frame_desc[k].length = packet_size;
urb->iso_frame_desc[k].actual_length = 0;
}
}
/* allocs urbs and start isoc transfer with two pending urbs to avoid
* gaps in the transfer chain
*/
static int
start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb,
usb_complete_t complete, int packet_size)
{
int i, k, errcode;
DBG(HFCUSB_DBG_INIT, "HFC-S USB: starting ISO-URBs for fifo:%d\n",
fifo->fifonum);
/* allocate Memory for Iso out Urbs */
for (i = 0; i < 2; i++) {
if (!(fifo->iso[i].purb)) {
fifo->iso[i].purb =
usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
if (!(fifo->iso[i].purb)) {
printk(KERN_INFO
"alloc urb for fifo %i failed!!!",
fifo->fifonum);
}
fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
/* Init the first iso */
if (ISO_BUFFER_SIZE >=
(fifo->usb_packet_maxlen *
num_packets_per_urb)) {
fill_isoc_urb(fifo->iso[i].purb,
fifo->hfc->dev, fifo->pipe,
fifo->iso[i].buffer,
num_packets_per_urb,
fifo->usb_packet_maxlen,
fifo->intervall, complete,
&fifo->iso[i]);
memset(fifo->iso[i].buffer, 0,
sizeof(fifo->iso[i].buffer));
/* defining packet delimeters in fifo->buffer */
for (k = 0; k < num_packets_per_urb; k++) {
fifo->iso[i].purb->
iso_frame_desc[k].offset =
k * packet_size;
fifo->iso[i].purb->
iso_frame_desc[k].length =
packet_size;
}
} else {
printk(KERN_INFO
"HFC-S USB: ISO Buffer size to small!\n");
}
}
fifo->bit_line = BITLINE_INF;
errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
fifo->active = (errcode >= 0) ? 1 : 0;
if (errcode < 0)
printk(KERN_INFO "HFC-S USB: usb_submit_urb URB nr:%d, error(%i): '%s'\n",
i, errcode, symbolic(urb_errlist, errcode));
}
return (fifo->active);
}
/* stops running iso chain and frees their pending urbs */
static void
stop_isoc_chain(usb_fifo * fifo)
{
int i;
for (i = 0; i < 2; i++) {
if (fifo->iso[i].purb) {
DBG(HFCUSB_DBG_INIT,
"HFC-S USB: Stopping iso chain for fifo %i.%i",
fifo->fifonum, i);
usb_kill_urb(fifo->iso[i].purb);
usb_free_urb(fifo->iso[i].purb);
fifo->iso[i].purb = NULL;
}
}
usb_kill_urb(fifo->urb);
usb_free_urb(fifo->urb);
fifo->urb = NULL;
fifo->active = 0;
}
/* defines how much ISO packets are handled in one URB */
static int iso_packets[8] =
{ ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
};
static void
tx_iso_complete(struct urb *urb)
{
iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
usb_fifo *fifo = context_iso_urb->owner_fifo;
hfcusb_data *hfc = fifo->hfc;
int k, tx_offset, num_isoc_packets, sink, len, current_len,
errcode;
int frame_complete, transp_mode, fifon, status;
__u8 threshbit;
fifon = fifo->fifonum;
status = urb->status;
tx_offset = 0;
/* ISO transfer only partially completed,
look at individual frame status for details */
if (status == -EXDEV) {
DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: tx_iso_complete with -EXDEV"
", urb->status %d, fifonum %d\n",
status, fifon);
for (k = 0; k < iso_packets[fifon]; ++k) {
errcode = urb->iso_frame_desc[k].status;
if (errcode)
DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: tx_iso_complete "
"packet %i, status: %i\n",
k, errcode);
}
// clear status, so go on with ISO transfers
status = 0;
}
if (fifo->active && !status) {
transp_mode = 0;
if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
transp_mode = 1;
/* is FifoFull-threshold set for our channel? */
threshbit = (hfc->threshold_mask & (1 << fifon));
num_isoc_packets = iso_packets[fifon];
/* predict dataflow to avoid fifo overflow */
if (fifon >= HFCUSB_D_TX) {
sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
} else {
sink = (threshbit) ? SINK_MIN : SINK_MAX;
}
fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
context_iso_urb->buffer, num_isoc_packets,
fifo->usb_packet_maxlen, fifo->intervall,
tx_iso_complete, urb->context);
memset(context_iso_urb->buffer, 0,
sizeof(context_iso_urb->buffer));
frame_complete = 0;
/* Generate next ISO Packets */
for (k = 0; k < num_isoc_packets; ++k) {
if (fifo->skbuff) {
len = fifo->skbuff->len;
/* we lower data margin every msec */
fifo->bit_line -= sink;
current_len = (0 - fifo->bit_line) / 8;
/* maximum 15 byte for every ISO packet makes our life easier */
if (current_len > 14)
current_len = 14;
current_len =
(len <=
current_len) ? len : current_len;
/* how much bit do we put on the line? */
fifo->bit_line += current_len * 8;
context_iso_urb->buffer[tx_offset] = 0;
if (current_len == len) {
if (!transp_mode) {
/* here frame completion */
context_iso_urb->
buffer[tx_offset] = 1;
/* add 2 byte flags and 16bit CRC at end of ISDN frame */
fifo->bit_line += 32;
}
frame_complete = 1;
}
memcpy(context_iso_urb->buffer +
tx_offset + 1, fifo->skbuff->data,
current_len);
skb_pull(fifo->skbuff, current_len);
/* define packet delimeters within the URB buffer */
urb->iso_frame_desc[k].offset = tx_offset;
urb->iso_frame_desc[k].length =
current_len + 1;
tx_offset += (current_len + 1);
} else {
urb->iso_frame_desc[k].offset =
tx_offset++;
urb->iso_frame_desc[k].length = 1;
fifo->bit_line -= sink; /* we lower data margin every msec */
if (fifo->bit_line < BITLINE_INF) {
fifo->bit_line = BITLINE_INF;
}
}
if (frame_complete) {
fifo->delete_flg = 1;
fifo->hif->l1l2(fifo->hif,
PH_DATA | CONFIRM,
(void *) (unsigned long) fifo->skbuff->
truesize);
if (fifo->skbuff && fifo->delete_flg) {
dev_kfree_skb_any(fifo->skbuff);
fifo->skbuff = NULL;
fifo->delete_flg = 0;
}
frame_complete = 0;
}
}
errcode = usb_submit_urb(urb, GFP_ATOMIC);
if (errcode < 0) {
printk(KERN_INFO
"HFC-S USB: error submitting ISO URB: %d\n",
errcode);
}
} else {
if (status && !hfc->disc_flag) {
printk(KERN_INFO
"HFC-S USB: tx_iso_complete: error(%i): '%s', fifonum=%d\n",
status, symbolic(urb_errlist, status), fifon);
}
}
}
static void
rx_iso_complete(struct urb *urb)
{
iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
usb_fifo *fifo = context_iso_urb->owner_fifo;
hfcusb_data *hfc = fifo->hfc;
int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
status;
unsigned int iso_status;
__u8 *buf;
static __u8 eof[8];
fifon = fifo->fifonum;
status = urb->status;
if (urb->status == -EOVERFLOW) {
DBG(HFCUSB_DBG_VERBOSE_USB,
"HFC-USB: ignoring USB DATAOVERRUN fifo(%i)", fifon);
status = 0;
}
/* ISO transfer only partially completed,
look at individual frame status for details */
if (status == -EXDEV) {
DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: rx_iso_complete with -EXDEV "
"urb->status %d, fifonum %d\n",
status, fifon);
status = 0;
}
if (fifo->active && !status) {
num_isoc_packets = iso_packets[fifon];
maxlen = fifo->usb_packet_maxlen;
for (k = 0; k < num_isoc_packets; ++k) {
len = urb->iso_frame_desc[k].actual_length;
offset = urb->iso_frame_desc[k].offset;
buf = context_iso_urb->buffer + offset;
iso_status = urb->iso_frame_desc[k].status;
if (iso_status && !hfc->disc_flag)
DBG(HFCUSB_DBG_VERBOSE_USB,
"HFC-S USB: rx_iso_complete "
"ISO packet %i, status: %i\n",
k, iso_status);
if (fifon == HFCUSB_D_RX) {
DBG(HFCUSB_DBG_VERBOSE_USB,
"HFC-S USB: ISO-D-RX lst_urblen:%2d "
"act_urblen:%2d max-urblen:%2d EOF:0x%0x",
fifo->last_urblen, len, maxlen,
eof[5]);
DBG_PACKET(HFCUSB_DBG_VERBOSE_USB, buf, len);
}
if (fifo->last_urblen != maxlen) {
/* the threshold mask is in the 2nd status byte */
hfc->threshold_mask = buf[1];
/* care for L1 state only for D-Channel
to avoid overlapped iso completions */
if (fifon == HFCUSB_D_RX) {
/* the S0 state is in the upper half
of the 1st status byte */
s0_state_handler(hfc, buf[0] >> 4);
}
eof[fifon] = buf[0] & 1;
if (len > 2)
collect_rx_frame(fifo, buf + 2,
len - 2,
(len < maxlen) ?
eof[fifon] : 0);
} else {
collect_rx_frame(fifo, buf, len,
(len <
maxlen) ? eof[fifon] :
0);
}
fifo->last_urblen = len;
}
fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
context_iso_urb->buffer, num_isoc_packets,
fifo->usb_packet_maxlen, fifo->intervall,
rx_iso_complete, urb->context);
errcode = usb_submit_urb(urb, GFP_ATOMIC);
if (errcode < 0) {
printk(KERN_ERR
"HFC-S USB: error submitting ISO URB: %d\n",
errcode);
}
} else {
if (status && !hfc->disc_flag) {
printk(KERN_ERR
"HFC-S USB: rx_iso_complete : "
"urb->status %d, fifonum %d\n",
status, fifon);
}
}
}
/* collect rx data from INT- and ISO-URBs */
static void
collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
{
hfcusb_data *hfc = fifo->hfc;
int transp_mode, fifon;
fifon = fifo->fifonum;
transp_mode = 0;
if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
transp_mode = 1;
if (!fifo->skbuff) {
fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
if (!fifo->skbuff) {
printk(KERN_ERR
"HFC-S USB: cannot allocate buffer for fifo(%d)\n",
fifon);
return;
}
}
if (len) {
if (fifo->skbuff->len + len < fifo->max_size) {
memcpy(skb_put(fifo->skbuff, len), data, len);
} else {
DBG(HFCUSB_DBG_FIFO_ERR,
"HCF-USB: got frame exceeded fifo->max_size(%d) fifo(%d)",
fifo->max_size, fifon);
DBG_SKB(HFCUSB_DBG_VERBOSE_USB, fifo->skbuff);
skb_trim(fifo->skbuff, 0);
}
}
if (transp_mode && fifo->skbuff->len >= 128) {
fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
fifo->skbuff);
fifo->skbuff = NULL;
return;
}
/* we have a complete hdlc packet */
if (finish) {
if (fifo->skbuff->len > 3 &&
!fifo->skbuff->data[fifo->skbuff->len - 1]) {
if (fifon == HFCUSB_D_RX) {
DBG(HFCUSB_DBG_DCHANNEL,
"HFC-S USB: D-RX len(%d)", fifo->skbuff->len);
DBG_SKB(HFCUSB_DBG_DCHANNEL, fifo->skbuff);
}
/* remove CRC & status */
skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
if (fifon == HFCUSB_PCM_RX) {
fifo->hif->l1l2(fifo->hif,
PH_DATA_E | INDICATION,
fifo->skbuff);
} else
fifo->hif->l1l2(fifo->hif,
PH_DATA | INDICATION,
fifo->skbuff);
fifo->skbuff = NULL; /* buffer was freed from upper layer */
} else {
DBG(HFCUSB_DBG_FIFO_ERR,
"HFC-S USB: ERROR frame len(%d) fifo(%d)",
fifo->skbuff->len, fifon);
DBG_SKB(HFCUSB_DBG_VERBOSE_USB, fifo->skbuff);
skb_trim(fifo->skbuff, 0);
}
}
}
static void
rx_int_complete(struct urb *urb)
{
int len;
int status;
__u8 *buf, maxlen, fifon;
usb_fifo *fifo = (usb_fifo *) urb->context;
hfcusb_data *hfc = fifo->hfc;
static __u8 eof[8];
urb->dev = hfc->dev; /* security init */
fifon = fifo->fifonum;
if ((!fifo->active) || (urb->status)) {
DBG(HFCUSB_DBG_INIT, "HFC-S USB: RX-Fifo %i is going down (%i)",
fifon, urb->status);
fifo->urb->interval = 0; /* cancel automatic rescheduling */
if (fifo->skbuff) {
dev_kfree_skb_any(fifo->skbuff);
fifo->skbuff = NULL;
}
return;
}
len = urb->actual_length;
buf = fifo->buffer;
maxlen = fifo->usb_packet_maxlen;
if (fifon == HFCUSB_D_RX) {
DBG(HFCUSB_DBG_VERBOSE_USB,
"HFC-S USB: INT-D-RX lst_urblen:%2d "
"act_urblen:%2d max-urblen:%2d EOF:0x%0x",
fifo->last_urblen, len, maxlen,
eof[5]);
DBG_PACKET(HFCUSB_DBG_VERBOSE_USB, buf, len);
}
if (fifo->last_urblen != fifo->usb_packet_maxlen) {
/* the threshold mask is in the 2nd status byte */
hfc->threshold_mask = buf[1];
/* the S0 state is in the upper half of the 1st status byte */
s0_state_handler(hfc, buf[0] >> 4);
eof[fifon] = buf[0] & 1;
/* if we have more than the 2 status bytes -> collect data */
if (len > 2)
collect_rx_frame(fifo, buf + 2,
urb->actual_length - 2,
(len < maxlen) ? eof[fifon] : 0);
} else {
collect_rx_frame(fifo, buf, urb->actual_length,
(len < maxlen) ? eof[fifon] : 0);
}
fifo->last_urblen = urb->actual_length;
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
printk(KERN_INFO
"HFC-S USB: %s error resubmitting URB fifo(%d)\n",
__func__, fifon);
}
}
/* start initial INT-URB for certain fifo */
static void
start_int_fifo(usb_fifo * fifo)
{
int errcode;
DBG(HFCUSB_DBG_INIT, "HFC-S USB: starting RX INT-URB for fifo:%d\n",
fifo->fifonum);
if (!fifo->urb) {
fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!fifo->urb)
return;
}
usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
fifo->buffer, fifo->usb_packet_maxlen,
rx_int_complete, fifo, fifo->intervall);
fifo->active = 1; /* must be marked active */
errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
if (errcode) {
printk(KERN_ERR
"HFC-S USB: submit URB error(start_int_info): status:%i\n",
errcode);
fifo->active = 0;
fifo->skbuff = NULL;
}
}
static void
setup_bchannel(hfcusb_data * hfc, int channel, int mode)
{
__u8 val, idx_table[2] = { 0, 2 };
if (hfc->disc_flag) {
return;
}
DBG(HFCUSB_DBG_STATES, "HFC-S USB: setting channel %d to mode %d",
channel, mode);
hfc->b_mode[channel] = mode;
/* setup CON_HDLC */
val = 0;
if (mode != L1_MODE_NULL)
val = 8; /* enable fifo? */
if (mode == L1_MODE_TRANS)
val |= 2; /* set transparent bit */
/* set FIFO to transmit register */
queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
/* reset fifo */
queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
/* set FIFO to receive register */
queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
/* reset fifo */
queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
val = 0x40;
if (hfc->b_mode[0])
val |= 1;
if (hfc->b_mode[1])
val |= 2;
queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
val = 0;
if (hfc->b_mode[0])
val |= 1;
if (hfc->b_mode[1])
val |= 2;
queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
if (mode == L1_MODE_NULL) {
if (channel)
handle_led(hfc, LED_B2_OFF);
else
handle_led(hfc, LED_B1_OFF);
} else {
if (channel)
handle_led(hfc, LED_B2_ON);
else
handle_led(hfc, LED_B1_ON);
}
}
static void
hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
{
usb_fifo *fifo = my_hisax_if->priv;
hfcusb_data *hfc = fifo->hfc;
switch (pr) {
case PH_ACTIVATE | REQUEST:
if (fifo->fifonum == HFCUSB_D_TX) {
DBG(HFCUSB_DBG_STATES,
"HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
if (hfc->l1_state != 3
&& hfc->l1_state != 7) {
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
PH_DEACTIVATE |
INDICATION,
NULL);
DBG(HFCUSB_DBG_STATES,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
} else {
if (hfc->l1_state == 7) { /* l1 already active */
hfc->d_if.ifc.l1l2(&hfc->
d_if.
ifc,
PH_ACTIVATE
|
INDICATION,
NULL);
DBG(HFCUSB_DBG_STATES,
"HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
} else {
/* force sending sending INFO1 */
queue_control_request(hfc,
HFCUSB_STATES,
0x14,
1);
mdelay(1);
/* start l1 activation */
queue_control_request(hfc,
HFCUSB_STATES,
0x04,
1);
if (!timer_pending
(&hfc->t3_timer)) {
hfc->t3_timer.
expires =
jiffies +
(HFC_TIMER_T3 *
HZ) / 1000;
add_timer(&hfc->
t3_timer);
}
}
}
} else {
DBG(HFCUSB_DBG_STATES,
"HFC_USB: hfc_usb_d_l2l1 B-chan: PH_ACTIVATE | REQUEST");
setup_bchannel(hfc,
(fifo->fifonum ==
HFCUSB_B1_TX) ? 0 : 1,
(long) arg);
fifo->hif->l1l2(fifo->hif,
PH_ACTIVATE | INDICATION,
NULL);
}
break;
case PH_DEACTIVATE | REQUEST:
if (fifo->fifonum == HFCUSB_D_TX) {
DBG(HFCUSB_DBG_STATES,
"HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
} else {
DBG(HFCUSB_DBG_STATES,
"HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
setup_bchannel(hfc,
(fifo->fifonum ==
HFCUSB_B1_TX) ? 0 : 1,
(int) L1_MODE_NULL);
fifo->hif->l1l2(fifo->hif,
PH_DEACTIVATE | INDICATION,
NULL);
}
break;
case PH_DATA | REQUEST:
if (fifo->skbuff && fifo->delete_flg) {
dev_kfree_skb_any(fifo->skbuff);
fifo->skbuff = NULL;
fifo->delete_flg = 0;
}
fifo->skbuff = arg; /* we have a new buffer */
break;
default:
DBG(HFCUSB_DBG_STATES,
"HFC_USB: hfc_usb_d_l2l1: unknown state : %#x", pr);
break;
}
}
/* initial init HFC-S USB chip registers, HiSax interface, USB URBs */
static int
hfc_usb_init(hfcusb_data * hfc)
{
usb_fifo *fifo;
int i, err;
u_char b;
struct hisax_b_if *p_b_if[2];
/* check the chip id */
if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
printk(KERN_INFO "HFC-USB: cannot read chip id\n");
return (1);
}
if (b != HFCUSB_CHIPID) {
printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
return (1);
}
/* first set the needed config, interface and alternate */
err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
/* do Chip reset */
write_usb(hfc, HFCUSB_CIRM, 8);
/* aux = output, reset off */
write_usb(hfc, HFCUSB_CIRM, 0x10);
/* set USB_SIZE to match wMaxPacketSize for INT or BULK transfers */
write_usb(hfc, HFCUSB_USB_SIZE,
(hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
/* set USB_SIZE_I to match wMaxPacketSize for ISO transfers */
write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
/* enable PCM/GCI master mode */
write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
/* init the fifos */
write_usb(hfc, HFCUSB_F_THRES,
(HFCUSB_TX_THRESHOLD /
8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
fifo = hfc->fifos;
for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
fifo[i].skbuff = NULL; /* init buffer pointer */
fifo[i].max_size =
(i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
fifo[i].last_urblen = 0;
/* set 2 bit for D- & E-channel */
write_usb(hfc, HFCUSB_HDLC_PAR,
((i <= HFCUSB_B2_RX) ? 0 : 2));
/* rx hdlc, enable IFF for D-channel */
write_usb(hfc, HFCUSB_CON_HDLC,
((i == HFCUSB_D_TX) ? 0x09 : 0x08));
write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
}
write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
/* set both B-channel to not connected */
hfc->b_mode[0] = L1_MODE_NULL;
hfc->b_mode[1] = L1_MODE_NULL;
hfc->l1_activated = 0;
hfc->disc_flag = 0;
hfc->led_state = 0;
hfc->old_led_state = 0;
/* init the t3 timer */
init_timer(&hfc->t3_timer);
hfc->t3_timer.data = (long) hfc;
hfc->t3_timer.function = (void *) l1_timer_expire_t3;
/* init the t4 timer */
init_timer(&hfc->t4_timer);
hfc->t4_timer.data = (long) hfc;
hfc->t4_timer.function = (void *) l1_timer_expire_t4;
/* init the background machinery for control requests */
hfc->ctrl_read.bRequestType = 0xc0;
hfc->ctrl_read.bRequest = 1;
hfc->ctrl_read.wLength = cpu_to_le16(1);
hfc->ctrl_write.bRequestType = 0x40;
hfc->ctrl_write.bRequest = 0;
hfc->ctrl_write.wLength = 0;
usb_fill_control_urb(hfc->ctrl_urb,
hfc->dev,
hfc->ctrl_out_pipe,
(u_char *) & hfc->ctrl_write,
NULL, 0, ctrl_complete, hfc);
/* Init All Fifos */
for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
hfc->fifos[i].iso[0].purb = NULL;
hfc->fifos[i].iso[1].purb = NULL;
hfc->fifos[i].active = 0;
}
/* register Modul to upper Hisax Layers */
hfc->d_if.owner = THIS_MODULE;
hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
for (i = 0; i < 2; i++) {
hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
p_b_if[i] = &hfc->b_if[i];
}
/* default Prot: EURO ISDN, should be a module_param */
hfc->protocol = 2;
i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
if (i) {
printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i);
return i;
}
#ifdef CONFIG_HISAX_DEBUG
hfc_debug = debug;
#endif
for (i = 0; i < 4; i++)
hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
for (i = 4; i < 8; i++)
hfc->fifos[i].hif = &hfc->d_if.ifc;
/* 3 (+1) INT IN + 3 ISO OUT */
if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
start_int_fifo(hfc->fifos + HFCUSB_D_RX);
if (hfc->fifos[HFCUSB_PCM_RX].pipe)
start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
}
/* 3 (+1) ISO IN + 3 ISO OUT */
if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
rx_iso_complete, 16);
if (hfc->fifos[HFCUSB_PCM_RX].pipe)
start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
ISOC_PACKETS_D, rx_iso_complete,
16);
start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
rx_iso_complete, 16);
start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
rx_iso_complete, 16);
}
start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
tx_iso_complete, 1);
start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
tx_iso_complete, 1);
start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
tx_iso_complete, 1);
handle_led(hfc, LED_POWER_ON);
return (0);
}
/* initial callback for each plugged USB device */
static int
hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
hfcusb_data *context;
struct usb_host_interface *iface = intf->cur_altsetting;
struct usb_host_interface *iface_used = NULL;
struct usb_host_endpoint *ep;
int ifnum = iface->desc.bInterfaceNumber;
int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
attr, cfg_found, cidx, ep_addr;
int cmptbl[16], small_match, iso_packet_size, packet_size,
alt_used = 0;
hfcsusb_vdata *driver_info;
vend_idx = 0xffff;
for (i = 0; hfcusb_idtab[i].idVendor; i++) {
if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
&& (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
vend_idx = i;
continue;
}
}
printk(KERN_INFO
"HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
ifnum, iface->desc.bAlternateSetting, intf->minor);
if (vend_idx != 0xffff) {
/* if vendor and product ID is OK, start probing alternate settings */
alt_idx = 0;
small_match = 0xffff;
/* default settings */
iso_packet_size = 16;
packet_size = 64;
while (alt_idx < intf->num_altsetting) {
iface = intf->altsetting + alt_idx;
probe_alt_setting = iface->desc.bAlternateSetting;
cfg_used = 0;
/* check for config EOL element */
while (validconf[cfg_used][0]) {
cfg_found = 1;
vcf = validconf[cfg_used];
/* first endpoint descriptor */
ep = iface->endpoint;
memcpy(cmptbl, vcf, 16 * sizeof(int));
/* check for all endpoints in this alternate setting */
for (i = 0; i < iface->desc.bNumEndpoints;
i++) {
ep_addr =
ep->desc.bEndpointAddress;
/* get endpoint base */
idx = ((ep_addr & 0x7f) - 1) * 2;
if (ep_addr & 0x80)
idx++;
attr = ep->desc.bmAttributes;
if (cmptbl[idx] == EP_NUL) {
cfg_found = 0;
}
if (attr == USB_ENDPOINT_XFER_INT
&& cmptbl[idx] == EP_INT)
cmptbl[idx] = EP_NUL;
if (attr == USB_ENDPOINT_XFER_BULK
&& cmptbl[idx] == EP_BLK)
cmptbl[idx] = EP_NUL;
if (attr == USB_ENDPOINT_XFER_ISOC
&& cmptbl[idx] == EP_ISO)
cmptbl[idx] = EP_NUL;
/* check if all INT endpoints match minimum interval */
if ((attr == USB_ENDPOINT_XFER_INT)
&& (ep->desc.bInterval < vcf[17])) {
cfg_found = 0;
}
ep++;
}
for (i = 0; i < 16; i++) {
/* all entries must be EP_NOP or EP_NUL for a valid config */
if (cmptbl[i] != EP_NOP
&& cmptbl[i] != EP_NUL)
cfg_found = 0;
}
if (cfg_found) {
if (cfg_used < small_match) {
small_match = cfg_used;
alt_used =
probe_alt_setting;
iface_used = iface;
}
}
cfg_used++;
}
alt_idx++;
} /* (alt_idx < intf->num_altsetting) */
/* found a valid USB Ta Endpint config */
if (small_match != 0xffff) {
iface = iface_used;
if (!(context = kzalloc(sizeof(hfcusb_data), GFP_KERNEL)))
return (-ENOMEM); /* got no mem */
ep = iface->endpoint;
vcf = validconf[small_match];
for (i = 0; i < iface->desc.bNumEndpoints; i++) {
ep_addr = ep->desc.bEndpointAddress;
/* get endpoint base */
idx = ((ep_addr & 0x7f) - 1) * 2;
if (ep_addr & 0x80)
idx++;
cidx = idx & 7;
attr = ep->desc.bmAttributes;
/* init Endpoints */
if (vcf[idx] != EP_NOP
&& vcf[idx] != EP_NUL) {
switch (attr) {
case USB_ENDPOINT_XFER_INT:
context->
fifos[cidx].
pipe =
usb_rcvintpipe
(dev,
ep->desc.
bEndpointAddress);
context->
fifos[cidx].
usb_transfer_mode
= USB_INT;
packet_size =
le16_to_cpu(ep->desc.wMaxPacketSize);
break;
case USB_ENDPOINT_XFER_BULK:
if (ep_addr & 0x80)
context->
fifos
[cidx].
pipe =
usb_rcvbulkpipe
(dev,
ep->
desc.
bEndpointAddress);
else
context->
fifos
[cidx].
pipe =
usb_sndbulkpipe
(dev,
ep->
desc.
bEndpointAddress);
context->
fifos[cidx].
usb_transfer_mode
= USB_BULK;
packet_size =
le16_to_cpu(ep->desc.wMaxPacketSize);
break;
case USB_ENDPOINT_XFER_ISOC:
if (ep_addr & 0x80)
context->
fifos
[cidx].
pipe =
usb_rcvisocpipe
(dev,
ep->
desc.
bEndpointAddress);
else
context->
fifos
[cidx].
pipe =
usb_sndisocpipe
(dev,
ep->
desc.
bEndpointAddress);
context->
fifos[cidx].
usb_transfer_mode
= USB_ISOC;
iso_packet_size =
le16_to_cpu(ep->desc.wMaxPacketSize);
break;
default:
context->
fifos[cidx].
pipe = 0;
} /* switch attribute */
if (context->fifos[cidx].pipe) {
context->fifos[cidx].
fifonum = cidx;
context->fifos[cidx].hfc =
context;
context->fifos[cidx].usb_packet_maxlen =
le16_to_cpu(ep->desc.wMaxPacketSize);
context->fifos[cidx].
intervall =
ep->desc.bInterval;
context->fifos[cidx].
skbuff = NULL;
}
}
ep++;
}
context->dev = dev; /* save device */
context->if_used = ifnum; /* save used interface */
context->alt_used = alt_used; /* and alternate config */
context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
context->cfg_used = vcf[16]; /* store used config */
context->vend_idx = vend_idx; /* store found vendor */
context->packet_size = packet_size;
context->iso_packet_size = iso_packet_size;
/* create the control pipes needed for register access */
context->ctrl_in_pipe =
usb_rcvctrlpipe(context->dev, 0);
context->ctrl_out_pipe =
usb_sndctrlpipe(context->dev, 0);
context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
driver_info =
(hfcsusb_vdata *) hfcusb_idtab[vend_idx].
driver_info;
printk(KERN_INFO "HFC-S USB: detected \"%s\"\n",
driver_info->vend_name);
DBG(HFCUSB_DBG_INIT,
"HFC-S USB: Endpoint-Config: %s (if=%d alt=%d), E-Channel(%d)",
conf_str[small_match], context->if_used,
context->alt_used,
validconf[small_match][18]);
/* init the chip and register the driver */
if (hfc_usb_init(context)) {
usb_kill_urb(context->ctrl_urb);
usb_free_urb(context->ctrl_urb);
context->ctrl_urb = NULL;
kfree(context);
return (-EIO);
}
usb_set_intfdata(intf, context);
return (0);
}
} else {
printk(KERN_INFO
"HFC-S USB: no valid vendor found in USB descriptor\n");
}
return (-EIO);
}
/* callback for unplugged USB device */
static void
hfc_usb_disconnect(struct usb_interface *intf)
{
hfcusb_data *context = usb_get_intfdata(intf);
int i;
handle_led(context, LED_POWER_OFF);
schedule_timeout(HZ / 100);
printk(KERN_INFO "HFC-S USB: device disconnect\n");
context->disc_flag = 1;
usb_set_intfdata(intf, NULL);
if (timer_pending(&context->t3_timer))
del_timer(&context->t3_timer);
if (timer_pending(&context->t4_timer))
del_timer(&context->t4_timer);
/* tell all fifos to terminate */
for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
if (context->fifos[i].active > 0) {
stop_isoc_chain(&context->fifos[i]);
DBG(HFCUSB_DBG_INIT,
"HFC-S USB: %s stopping ISOC chain Fifo(%i)",
__func__, i);
}
} else {
if (context->fifos[i].active > 0) {
context->fifos[i].active = 0;
DBG(HFCUSB_DBG_INIT,
"HFC-S USB: %s unlinking URB for Fifo(%i)",
__func__, i);
}
usb_kill_urb(context->fifos[i].urb);
usb_free_urb(context->fifos[i].urb);
context->fifos[i].urb = NULL;
}
context->fifos[i].active = 0;
}
usb_kill_urb(context->ctrl_urb);
usb_free_urb(context->ctrl_urb);
context->ctrl_urb = NULL;
hisax_unregister(&context->d_if);
kfree(context); /* free our structure again */
}
static struct usb_driver hfc_drv = {
.name = "hfc_usb",
.id_table = hfcusb_idtab,
.probe = hfc_usb_probe,
.disconnect = hfc_usb_disconnect,
};
static void __exit
hfc_usb_mod_exit(void)
{
usb_deregister(&hfc_drv); /* release our driver */
printk(KERN_INFO "HFC-S USB: module removed\n");
}
static int __init
hfc_usb_mod_init(void)
{
char revstr[30], datestr[30], dummy[30];
#ifndef CONFIG_HISAX_DEBUG
hfc_debug = debug;
#endif
sscanf(hfcusb_revision,
"%s %s $ %s %s %s $ ", dummy, revstr,
dummy, datestr, dummy);
printk(KERN_INFO
"HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
revstr, datestr, debug);
if (usb_register(&hfc_drv)) {
printk(KERN_INFO
"HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
return (-1); /* unable to register */
}
return (0);
}
module_init(hfc_usb_mod_init);
module_exit(hfc_usb_mod_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
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