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linux/drivers/isdn/hisax/hfc_usb.c
Adrian Bunk 672c3fd906 [PATCH] drivers/isdn/hisax/: possible cleanups 
This patch contains the following possible cleanups:
- make needlessly global code static
- remove the compiled but unused st5481_hdlc.{c,h}
- kill enternow.h
- enternow_pci.c: kill InByte/OutByte/BYTE
- isdnl2.c: kill FreeSkb
- remove or #if 0 the following unused functions:
  - config.c: IsdnCardState
  - ipacx.c: ipacx_new_ph
  - ipacx.c: dch_bh
  - ipacx.c: setup_ipacx
  - isdnl2.c: IsRR

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Kai Germaschewski <kai@germaschewski.name>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:25:07 -07:00

1829 lines
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/*
* hfc_usb.c
*
* $Id: hfc_usb.c,v 4.34 2005/01/26 17:25:53 martinb1 Exp $
*
* modular HiSax ISDN driver for Colognechip HFC-S USB chip
*
* Authors : Peter Sprenger (sprenger@moving-bytes.de)
* Martin Bachem (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/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel_stat.h>
#include <linux/usb.h>
#include <linux/kernel.h>
#include <linux/smp_lock.h>
#include <linux/sched.h>
#include "hisax.h"
#include "hisax_if.h"
#include "hfc_usb.h"
/*
* Version Information
* (do not modify the CVS Makros $Revision: 4.34 $ and $Date: 2005/01/26 17:25:53 $ !)
*/
static const char *hfcusb_revision =
"Revision: 4.34 $ Date: 2005/01/26 17:25:53 $ ";
/* Hisax debug support
* use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG
*/
#ifdef CONFIG_HISAX_DEBUG
#include <linux/moduleparam.h>
#define __debug_variable hfc_debug
#include "hisax_debug.h"
static u_int debug;
module_param(debug, uint, 0);
static int hfc_debug;
#endif
/****************************************/
/* data defining the devices to be used */
/****************************************/
static struct usb_device_id hfc_usb_idtab[] = {
{USB_DEVICE(0x0959, 0x2bd0)}, /* Colognechip USB eval TA */
{USB_DEVICE(0x0675, 0x1688)}, /* DrayTek miniVigor 128 USB ISDN TA */
{USB_DEVICE(0x07b0, 0x0007)}, /* Billion USB TA 2 */
{USB_DEVICE(0x0742, 0x2008)}, /* Stollmann USB TA */
{USB_DEVICE(0x0742, 0x2009)}, /* Aceex USB ISDN TA */
{USB_DEVICE(0x0742, 0x200A)}, /* OEM USB ISDN TA */
{USB_DEVICE(0x08e3, 0x0301)}, /* OliTec ISDN USB */
{USB_DEVICE(0x07fa, 0x0846)}, /* Bewan ISDN USB TA */
{USB_DEVICE(0x07fa, 0x0847)}, /* Djinn Numeris USB */
{USB_DEVICE(0x07b0, 0x0006)}, /* Twister ISDN USB TA */
{} /* end with an all-zeroes entry */
};
/* driver internal device specific data:
* VendorID, ProductID, Devicename, LED_SCHEME,
* LED's BitMask in HFCUSB_P_DATA Register : LED_USB, LED_S0, LED_B1, LED_B2
*/
static vendor_data vdata[] = {
/* CologneChip Eval TA */
{0x0959, 0x2bd0, "ISDN USB TA (Cologne Chip HFC-S USB based)",
LED_OFF, {4, 0, 2, 1}
}
,
/* DrayTek miniVigor 128 USB ISDN TA */
{0x0675, 0x1688, "DrayTek miniVigor 128 USB ISDN TA",
LED_SCHEME1, {1, 2, 0, 0}
}
,
/* Billion TA */
{0x07b0, 0x0007, "Billion tiny USB ISDN TA 128",
LED_SCHEME1, {0x80, -64, -32, -16}
}
,
/* Stollmann TA */
{0x0742, 0x2008, "Stollmann USB TA",
LED_SCHEME1, {4, 0, 2, 1}
}
,
/* Aceex USB ISDN TA */
{0x0742, 0x2009, "Aceex USB ISDN TA",
LED_SCHEME1, {4, 0, 2, 1}
}
,
/* OEM USB ISDN TA */
{0x0742, 0x200A, "OEM USB ISDN TA",
LED_SCHEME1, {4, 0, 2, 1}
}
,
/* Olitec TA */
{0x08e3, 0x0301, "Olitec USB RNIS",
LED_SCHEME1, {2, 0, 1, 4}
}
,
/* Bewan TA */
{0x07fa, 0x0846, "Bewan Modem RNIS USB",
LED_SCHEME1, {0x80, -64, -32, -16}
}
,
/* Bewan TA */
{0x07fa, 0x0847, "Djinn Numeris USB",
LED_SCHEME1, {0x80, -64, -32, -16}
}
,
/* Twister ISDN TA */
{0x07b0, 0x0006, "Twister ISDN TA",
LED_SCHEME1, {0x80, -64, -32, -16}
}
,
{0, 0, 0} /* EOL element */
};
/***************************************************************/
/* 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, ctrl_out_pipe; /* handles for control 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, led_new_data, led_b_active;
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 */
struct timer_list led_timer; /* timer flashing leds */
} 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 "<unkown>";
}
/******************************************************/
/* start next background transfer for control channel */
/******************************************************/
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 =
hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg;
hfc->ctrl_write.wValue =
hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val;
usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
}
} /* ctrl_start_transfer */
/************************************/
/* queue a control transfer request */
/* return 0 on success. */
/************************************/
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);
} /* queue_control_request */
static int
control_action_handler(hfcusb_data * hfc, int reg, int val, int action)
{
if (!action)
return (1); /* no action defined */
return (0);
}
/***************************************************************/
/* control completion routine handling background control cmds */
/***************************************************************/
static void
ctrl_complete(struct urb *urb, struct pt_regs *regs)
{
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];
control_action_handler(hfc, buf->hfc_reg, buf->reg_val,
buf->action);
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 */
}
} /* ctrl_complete */
/***************************************************/
/* 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);
}
}
/**************************/
/* handle LED bits */
/**************************/
static void
set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset)
{
if (unset) {
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;
}
}
/******************************************/
/* invert B-channel LEDs if data is sent */
/******************************************/
static void
led_timer(hfcusb_data * hfc)
{
static int cnt = 0;
if (cnt) {
if (hfc->led_b_active & 1)
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[2],
0);
if (hfc->led_b_active & 2)
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[3],
0);
} else {
if (!(hfc->led_b_active & 1) || hfc->led_new_data & 1)
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[2],
1);
if (!(hfc->led_b_active & 2) || hfc->led_new_data & 2)
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[3],
1);
}
write_led(hfc, hfc->led_state);
hfc->led_new_data = 0;
cnt = !cnt;
/* restart 4 hz timer */
if (!timer_pending(&hfc->led_timer)) {
add_timer(&hfc->led_timer);
hfc->led_timer.expires = jiffies + (LED_TIME * HZ) / 1000;
}
}
/**************************/
/* handle LED requests */
/**************************/
static void
handle_led(hfcusb_data * hfc, int event)
{
/* if no scheme -> no LED action */
if (vdata[hfc->vend_idx].led_scheme == LED_OFF)
return;
switch (event) {
case LED_POWER_ON:
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[0],
0);
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[1],
1);
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[2],
1);
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[3],
1);
break;
case LED_POWER_OFF: /* no Power off handling */
break;
case LED_S0_ON:
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[1],
0);
break;
case LED_S0_OFF:
set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[1],
1);
break;
case LED_B1_ON:
hfc->led_b_active |= 1;
break;
case LED_B1_OFF:
hfc->led_b_active &= ~1;
break;
case LED_B1_DATA:
hfc->led_new_data |= 1;
break;
case LED_B2_ON:
hfc->led_b_active |= 2;
break;
case LED_B2_OFF:
hfc->led_b_active &= ~2;
break;
case LED_B2_DATA:
hfc->led_new_data |= 2;
break;
}
write_led(hfc, hfc->led_state);
}
/********************************/
/* called when 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);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
#endif
hfc->l1_activated = FALSE;
handle_led(hfc, LED_S0_OFF);
/* deactivate : */
queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
queue_control_request(hfc, HFCUSB_STATES, 3, 1);
}
/********************************/
/* called when 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);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
#endif
hfc->l1_activated = FALSE;
handle_led(hfc, LED_S0_OFF);
}
/*****************************/
/* handle S0 state changes */
/*****************************/
static void
state_handler(hfcusb_data * hfc, __u8 state)
{
__u8 old_state;
old_state = hfc->l1_state;
if (state == old_state || state < 1 || state > 8)
return;
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state,
old_state);
#endif
if (state < 4 || state == 7 || state == 8) {
if (timer_pending(&hfc->t3_timer))
del_timer(&hfc->t3_timer);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG, "HFC-S USB: T3 deactivated");
#endif
}
if (state >= 7) {
if (timer_pending(&hfc->t4_timer))
del_timer(&hfc->t4_timer);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG, "HFC-S USB: T4 deactivated");
#endif
}
if (state == 7 && !hfc->l1_activated) {
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
PH_ACTIVATE | INDICATION, NULL);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
#endif
hfc->l1_activated = TRUE;
handle_led(hfc, LED_S0_ON);
} else if (state <= 3 /* && activated */ ) {
if (old_state == 7 || old_state == 8) {
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG, "HFC-S USB: T4 activated");
#endif
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);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent");
#endif
hfc->l1_activated = FALSE;
handle_led(hfc, LED_S0_OFF);
}
}
hfc->l1_state = state;
}
/* prepare iso urb */
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;
spin_lock_init(&urb->lock);
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;
printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\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: %s URB nr:%d\n",
symbolic(urb_errlist, errcode), i);
};
}
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) {
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-S USB: Stopping iso chain for fifo %i.%i",
fifo->fifonum, i);
#endif
usb_unlink_urb(fifo->iso[i].purb);
usb_free_urb(fifo->iso[i].purb);
fifo->iso[i].purb = NULL;
}
}
if (fifo->urb) {
usb_unlink_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
};
/*****************************************************/
/* transmit completion routine for all ISO tx fifos */
/*****************************************************/
static void
tx_iso_complete(struct urb *urb, struct pt_regs *regs)
{
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;
__u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
fifon = fifo->fifonum;
status = urb->status;
tx_offset = 0;
if (fifo->active && !status) {
transp_mode = 0;
if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
transp_mode = TRUE;
/* is FifoFull-threshold set for our channel? */
threshbit = threshtable[fifon] & hfc->threshold_mask;
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 = FALSE;
/* 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 = TRUE;
}
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);
if (!transp_mode) {
if (fifon == HFCUSB_B1_TX)
handle_led(hfc,
LED_B1_DATA);
if (fifon == HFCUSB_B2_TX)
handle_led(hfc,
LED_B2_DATA);
}
} 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 = TRUE;
fifo->hif->l1l2(fifo->hif,
PH_DATA | CONFIRM,
(void *) fifo->skbuff->
truesize);
if (fifo->skbuff && fifo->delete_flg) {
dev_kfree_skb_any(fifo->skbuff);
fifo->skbuff = NULL;
fifo->delete_flg = FALSE;
}
frame_complete = FALSE;
}
}
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 : urb->status %s (%i), fifonum=%d\n",
symbolic(urb_errlist, status), status,
fifon);
}
}
} /* tx_iso_complete */
/*****************************************************/
/* receive completion routine for all ISO tx fifos */
/*****************************************************/
static void
rx_iso_complete(struct urb *urb, struct pt_regs *regs)
{
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];
#ifdef CONFIG_HISAX_DEBUG
__u8 i;
#endif
fifon = fifo->fifonum;
status = urb->status;
if (urb->status == -EOVERFLOW) {
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n",
fifon);
#endif
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;
#ifdef CONFIG_HISAX_DEBUG
if (iso_status && !hfc->disc_flag)
DBG(USB_DBG,
"HFC-S USB: ISO packet failure - status:%x",
iso_status);
if ((fifon == 5) && (debug > 1)) {
printk(KERN_INFO
"HFC-S USB: ISO-D-RX lst_urblen:%2d "
"act_urblen:%2d max-urblen:%2d "
"EOF:0x%0x DATA: ",
fifo->last_urblen, len, maxlen,
eof[5]);
for (i = 0; i < len; i++)
printk("%.2x ", buf[i]);
printk("\n");
}
#endif
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 == 5) {
/* the S0 state is in the upper half
of the 1st status byte */
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_INFO
"HFC-S USB: error submitting ISO URB: %d \n",
errcode);
}
} else {
if (status && !hfc->disc_flag) {
printk(KERN_INFO
"HFC-S USB: rx_iso_complete : "
"urb->status %d, fifonum %d\n",
status, fifon);
}
}
} /* rx_iso_complete */
/*****************************************************/
/* collect data from interrupt or isochron in */
/*****************************************************/
static void
collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
{
hfcusb_data *hfc = fifo->hfc;
int transp_mode, fifon;
#ifdef CONFIG_HISAX_DEBUG
int i;
#endif
fifon = fifo->fifonum;
transp_mode = 0;
if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
transp_mode = TRUE;
if (!fifo->skbuff) {
fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
if (!fifo->skbuff) {
printk(KERN_INFO
"HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n",
fifon);
return;
}
}
if (len) {
if (fifo->skbuff->len + len < fifo->max_size) {
memcpy(skb_put(fifo->skbuff, len), data, len);
} else {
#ifdef CONFIG_HISAX_DEBUG
printk(KERN_INFO "HFC-S USB: ");
for (i = 0; i < 15; i++)
printk("%.2x ",
fifo->skbuff->data[fifo->skbuff->
len - 15 + i]);
printk("\n");
#endif
printk(KERN_INFO
"HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n",
fifo->max_size, fifon);
}
}
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->data[fifo->skbuff->len - 1])
&& (fifo->skbuff->len > 3)) {
/* 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 {
if (fifo->skbuff->len > 3) {
printk(KERN_INFO
"HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n",
fifo->skbuff->len, fifon);
#ifdef CONFIG_HISAX_DEBUG
if (debug > 1) {
printk(KERN_INFO "HFC-S USB: ");
for (i = 0; i < 15; i++)
printk("%.2x ",
fifo->skbuff->
data[fifo->skbuff->
len - 15 + i]);
printk("\n");
}
#endif
}
#ifdef CONFIG_HISAX_DEBUG
else {
printk(KERN_INFO
"HFC-S USB: frame to small (%d bytes)!!!\n",
fifo->skbuff->len);
}
#endif
skb_trim(fifo->skbuff, 0);
}
}
/* LED flashing only in HDLC mode */
if (!transp_mode) {
if (fifon == HFCUSB_B1_RX)
handle_led(hfc, LED_B1_DATA);
if (fifon == HFCUSB_B2_RX)
handle_led(hfc, LED_B2_DATA);
}
}
/***********************************************/
/* receive completion routine for all rx fifos */
/***********************************************/
static void
rx_complete(struct urb *urb, struct pt_regs *regs)
{
int len;
int status;
__u8 *buf, maxlen, fifon;
usb_fifo *fifo = (usb_fifo *) urb->context;
hfcusb_data *hfc = fifo->hfc;
static __u8 eof[8];
#ifdef CONFIG_HISAX_DEBUG
__u8 i;
#endif
urb->dev = hfc->dev; /* security init */
fifon = fifo->fifonum;
if ((!fifo->active) || (urb->status)) {
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)",
fifon, urb->status);
#endif
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;
#ifdef CONFIG_HISAX_DEBUG
if ((fifon == 5) && (debug > 1)) {
printk(KERN_INFO
"HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ",
fifo->last_urblen, len, maxlen, eof[5]);
for (i = 0; i < len; i++)
printk("%.2x ", buf[i]);
printk("\n");
}
#endif
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 */
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: error resubmitting URN at rx_complete...\n");
}
} /* rx_complete */
/***************************************************/
/* start the interrupt transfer for the given fifo */
/***************************************************/
static void
start_int_fifo(usb_fifo * fifo)
{
int errcode;
printk(KERN_INFO "HFC-S USB: starting intr IN 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_complete, fifo, fifo->intervall);
fifo->active = 1; /* must be marked active */
errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
if (errcode) {
printk(KERN_INFO
"HFC-S USB: submit URB error(start_int_info): status:%i\n",
errcode);
fifo->active = 0;
fifo->skbuff = NULL;
}
} /* start_int_fifo */
/*****************************/
/* set the B-channel mode */
/*****************************/
static void
set_hfcmode(hfcusb_data * hfc, int channel, int mode)
{
__u8 val, idx_table[2] = { 0, 2 };
if (hfc->disc_flag) {
return;
}
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel,
mode);
#endif
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) {
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
#endif
if (hfc->l1_state != 3
&& hfc->l1_state != 7) {
hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
PH_DEACTIVATE |
INDICATION,
NULL);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
#endif
} else {
if (hfc->l1_state == 7) { /* l1 already active */
hfc->d_if.ifc.l1l2(&hfc->
d_if.
ifc,
PH_ACTIVATE
|
INDICATION,
NULL);
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
#endif
} 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 {
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST");
#endif
set_hfcmode(hfc,
(fifo->fifonum ==
HFCUSB_B1_TX) ? 0 : 1,
(int) arg);
fifo->hif->l1l2(fifo->hif,
PH_ACTIVATE | INDICATION,
NULL);
}
break;
case PH_DEACTIVATE | REQUEST:
if (fifo->fifonum == HFCUSB_D_TX) {
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
#endif
printk(KERN_INFO
"HFC-S USB: ISDN TE device should not deativate...\n");
} else {
#ifdef CONFIG_HISAX_DEBUG
DBG(ISDN_DBG,
"HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
#endif
set_hfcmode(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 = FALSE;
}
fifo->skbuff = arg; /* we have a new buffer */
break;
default:
printk(KERN_INFO
"HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n",
pr);
break;
}
}
/***************************************************************************/
/* usb_init is called once when a new matching device is detected to setup */
/* main parameters. It registers the driver at the main hisax module. */
/* on success 0 is returned. */
/***************************************************************************/
static int
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 the the 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 the the 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 = FALSE;
hfc->disc_flag = FALSE;
hfc->led_state = 0;
hfc->led_new_data = 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 led timer */
init_timer(&hfc->led_timer);
hfc->led_timer.data = (long) hfc;
hfc->led_timer.function = (void *) led_timer;
/* trigger 4 hz led timer */
if (!timer_pending(&hfc->led_timer)) {
hfc->led_timer.expires = jiffies + (LED_TIME * HZ) / 1000;
add_timer(&hfc->led_timer);
}
/* init the background machinery for control requests */
hfc->ctrl_read.bRequestType = 0xc0;
hfc->ctrl_read.bRequest = 1;
hfc->ctrl_read.wLength = 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;
hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
#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);
} /* usb_init */
/*************************************************/
/* function called to probe a new plugged 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;
vend_idx = 0xffff;
for (i = 0; vdata[i].vendor; i++) {
if (dev->descriptor.idVendor == vdata[i].vendor
&& dev->descriptor.idProduct == vdata[i].prod_id)
vend_idx = i;
}
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum,
iface->desc.bAlternateSetting, intf->minor);
#endif
printk(KERN_INFO
"HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
ifnum, iface->desc.bAlternateSetting, intf->minor);
if (vend_idx != 0xffff) {
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG, "HFC-S USB: found vendor idx:%d name:%s",
vend_idx, vdata[vend_idx].vend_name);
#endif
/* 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 = TRUE;
vcf = validconf[cfg_used];
/* first endpoint descriptor */
ep = iface->endpoint;
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-S USB: (if=%d alt=%d cfg_used=%d)\n",
ifnum, probe_alt_setting, cfg_used);
#endif
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 = FALSE;
}
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]) {
#ifdef CONFIG_HISAX_DEBUG
if (cfg_found)
DBG(USB_DBG,
"HFC-S USB: Interrupt Endpoint interval < %d found - skipping config",
vcf[17]);
#endif
cfg_found = FALSE;
}
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 = FALSE;
}
if (cfg_found) {
if (cfg_used < small_match) {
small_match = cfg_used;
alt_used =
probe_alt_setting;
iface_used = iface;
}
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-USB: small_match=%x %x\n",
small_match, alt_used);
#endif
}
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 =
kmalloc(sizeof(hfcusb_data), GFP_KERNEL)))
return (-ENOMEM); /* got no mem */
memset(context, 0, sizeof(hfcusb_data));
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 =
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 =
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 =
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 =
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);
printk(KERN_INFO
"HFC-S USB: detected \"%s\"\n",
vdata[vend_idx].vend_name);
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n",
conf_str[small_match], context->if_used,
context->alt_used);
printk(KERN_INFO
"HFC-S USB: E-channel (\"ECHO:\") logging ");
if (validconf[small_match][18])
printk(" possible\n");
else
printk("NOT possible\n");
#endif
/* init the chip and register the driver */
if (usb_init(context)) {
if (context->ctrl_urb) {
usb_unlink_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);
}
/****************************************************/
/* function called when an active device is removed */
/****************************************************/
static void
hfc_usb_disconnect(struct usb_interface
*intf)
{
hfcusb_data *context = usb_get_intfdata(intf);
int i;
printk(KERN_INFO "HFC-S USB: device disconnect\n");
context->disc_flag = TRUE;
usb_set_intfdata(intf, NULL);
if (!context)
return;
if (timer_pending(&context->t3_timer))
del_timer(&context->t3_timer);
if (timer_pending(&context->t4_timer))
del_timer(&context->t4_timer);
if (timer_pending(&context->led_timer))
del_timer(&context->led_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]);
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i",
i);
#endif
}
} else {
if (context->fifos[i].active > 0) {
context->fifos[i].active = 0;
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG,
"HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i",
i);
#endif
}
if (context->fifos[i].urb) {
usb_unlink_urb(context->fifos[i].urb);
usb_free_urb(context->fifos[i].urb);
context->fifos[i].urb = NULL;
}
}
context->fifos[i].active = 0;
}
/* wait for all URBS to terminate */
mdelay(10);
if (context->ctrl_urb) {
usb_unlink_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 */
} /* hfc_usb_disconnect */
/************************************/
/* our driver information structure */
/************************************/
static struct usb_driver hfc_drv = {
.owner = THIS_MODULE,.name =
"hfc_usb",.id_table = hfc_usb_idtab,.probe =
hfc_usb_probe,.disconnect = hfc_usb_disconnect,
};
static void __exit
hfc_usb_exit(void)
{
#ifdef CONFIG_HISAX_DEBUG
DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ...");
#endif
usb_deregister(&hfc_drv); /* release our driver */
printk(KERN_INFO "HFC-S USB: module removed\n");
}
static int __init
hfc_usb_init(void)
{
#ifndef CONFIG_HISAX_DEBUG
unsigned int debug = -1;
#endif
char revstr[30], datestr[30], dummy[30];
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_init);
module_exit(hfc_usb_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(usb, hfc_usb_idtab);
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