c38fc3bc2e
The original isdnhdlc code was developed for devices which had reversed bitorder in the byte stream. Adding code to handle normal bitstreams as well. Signed-off-by: Karsten Keil <keil@b1-systems.de>
779 lines
20 KiB
C
779 lines
20 KiB
C
/*
|
|
* Driver for ST5481 USB ISDN modem
|
|
*
|
|
* Author Frode Isaksen
|
|
* Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
|
|
* 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU General Public License, incorporated herein by reference.
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/netdevice.h>
|
|
#include "st5481.h"
|
|
|
|
static void ph_connect(struct st5481_adapter *adapter);
|
|
static void ph_disconnect(struct st5481_adapter *adapter);
|
|
|
|
static struct Fsm l1fsm;
|
|
|
|
static char *strL1State[] =
|
|
{
|
|
"ST_L1_F3",
|
|
"ST_L1_F4",
|
|
"ST_L1_F6",
|
|
"ST_L1_F7",
|
|
"ST_L1_F8",
|
|
};
|
|
|
|
static char *strL1Event[] =
|
|
{
|
|
"EV_IND_DP",
|
|
"EV_IND_1",
|
|
"EV_IND_2",
|
|
"EV_IND_3",
|
|
"EV_IND_RSY",
|
|
"EV_IND_5",
|
|
"EV_IND_6",
|
|
"EV_IND_7",
|
|
"EV_IND_AP",
|
|
"EV_IND_9",
|
|
"EV_IND_10",
|
|
"EV_IND_11",
|
|
"EV_IND_AI8",
|
|
"EV_IND_AI10",
|
|
"EV_IND_AIL",
|
|
"EV_IND_DI",
|
|
"EV_PH_ACTIVATE_REQ",
|
|
"EV_PH_DEACTIVATE_REQ",
|
|
"EV_TIMER3",
|
|
};
|
|
|
|
static inline void D_L1L2(struct st5481_adapter *adapter, int pr, void *arg)
|
|
{
|
|
struct hisax_if *ifc = (struct hisax_if *) &adapter->hisax_d_if;
|
|
|
|
ifc->l1l2(ifc, pr, arg);
|
|
}
|
|
|
|
static void
|
|
l1_go_f3(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fi->userdata;
|
|
|
|
if (fi->state == ST_L1_F7)
|
|
ph_disconnect(adapter);
|
|
|
|
FsmChangeState(fi, ST_L1_F3);
|
|
D_L1L2(adapter, PH_DEACTIVATE | INDICATION, NULL);
|
|
}
|
|
|
|
static void
|
|
l1_go_f6(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fi->userdata;
|
|
|
|
if (fi->state == ST_L1_F7)
|
|
ph_disconnect(adapter);
|
|
|
|
FsmChangeState(fi, ST_L1_F6);
|
|
}
|
|
|
|
static void
|
|
l1_go_f7(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fi->userdata;
|
|
|
|
FsmDelTimer(&adapter->timer, 0);
|
|
ph_connect(adapter);
|
|
FsmChangeState(fi, ST_L1_F7);
|
|
D_L1L2(adapter, PH_ACTIVATE | INDICATION, NULL);
|
|
}
|
|
|
|
static void
|
|
l1_go_f8(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fi->userdata;
|
|
|
|
if (fi->state == ST_L1_F7)
|
|
ph_disconnect(adapter);
|
|
|
|
FsmChangeState(fi, ST_L1_F8);
|
|
}
|
|
|
|
static void
|
|
l1_timer3(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fi->userdata;
|
|
|
|
st5481_ph_command(adapter, ST5481_CMD_DR);
|
|
FsmChangeState(fi, ST_L1_F3);
|
|
D_L1L2(adapter, PH_DEACTIVATE | INDICATION, NULL);
|
|
}
|
|
|
|
static void
|
|
l1_ignore(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
}
|
|
|
|
static void
|
|
l1_activate(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fi->userdata;
|
|
|
|
st5481_ph_command(adapter, ST5481_CMD_DR);
|
|
st5481_ph_command(adapter, ST5481_CMD_PUP);
|
|
FsmRestartTimer(&adapter->timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
|
|
st5481_ph_command(adapter, ST5481_CMD_AR8);
|
|
FsmChangeState(fi, ST_L1_F4);
|
|
}
|
|
|
|
static struct FsmNode L1FnList[] __initdata =
|
|
{
|
|
{ST_L1_F3, EV_IND_DP, l1_ignore},
|
|
{ST_L1_F3, EV_IND_AP, l1_go_f6},
|
|
{ST_L1_F3, EV_IND_AI8, l1_go_f7},
|
|
{ST_L1_F3, EV_IND_AI10, l1_go_f7},
|
|
{ST_L1_F3, EV_PH_ACTIVATE_REQ, l1_activate},
|
|
|
|
{ST_L1_F4, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F4, EV_IND_DP, l1_go_f3},
|
|
{ST_L1_F4, EV_IND_AP, l1_go_f6},
|
|
{ST_L1_F4, EV_IND_AI8, l1_go_f7},
|
|
{ST_L1_F4, EV_IND_AI10, l1_go_f7},
|
|
|
|
{ST_L1_F6, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F6, EV_IND_DP, l1_go_f3},
|
|
{ST_L1_F6, EV_IND_AP, l1_ignore},
|
|
{ST_L1_F6, EV_IND_AI8, l1_go_f7},
|
|
{ST_L1_F6, EV_IND_AI10, l1_go_f7},
|
|
{ST_L1_F7, EV_IND_RSY, l1_go_f8},
|
|
|
|
{ST_L1_F7, EV_IND_DP, l1_go_f3},
|
|
{ST_L1_F7, EV_IND_AP, l1_go_f6},
|
|
{ST_L1_F7, EV_IND_AI8, l1_ignore},
|
|
{ST_L1_F7, EV_IND_AI10, l1_ignore},
|
|
{ST_L1_F7, EV_IND_RSY, l1_go_f8},
|
|
|
|
{ST_L1_F8, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F8, EV_IND_DP, l1_go_f3},
|
|
{ST_L1_F8, EV_IND_AP, l1_go_f6},
|
|
{ST_L1_F8, EV_IND_AI8, l1_go_f8},
|
|
{ST_L1_F8, EV_IND_AI10, l1_go_f8},
|
|
{ST_L1_F8, EV_IND_RSY, l1_ignore},
|
|
};
|
|
|
|
static void l1m_debug(struct FsmInst *fi, char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
char buf[256];
|
|
|
|
va_start(args, fmt);
|
|
vsnprintf(buf, sizeof(buf), fmt, args);
|
|
DBG(8, "%s", buf);
|
|
va_end(args);
|
|
}
|
|
|
|
/* ======================================================================
|
|
* D-Channel out
|
|
*/
|
|
|
|
/*
|
|
D OUT state machine:
|
|
====================
|
|
|
|
Transmit short frame (< 16 bytes of encoded data):
|
|
|
|
L1 FRAME D_OUT_STATE USB D CHANNEL
|
|
-------- ----------- --- ---------
|
|
|
|
FIXME
|
|
|
|
-> [xx..xx] SHORT_INIT -> [7Exx..xxC1C27EFF]
|
|
SHORT_WAIT_DEN <> OUT_D_COUNTER=16
|
|
|
|
END_OF_SHORT <- DEN_EVENT -> 7Exx
|
|
xxxx
|
|
xxxx
|
|
xxxx
|
|
xxxx
|
|
xxxx
|
|
C1C1
|
|
7EFF
|
|
WAIT_FOR_RESET_IDLE <- D_UNDERRUN <- (8ms)
|
|
IDLE <> Reset pipe
|
|
|
|
|
|
|
|
Transmit long frame (>= 16 bytes of encoded data):
|
|
|
|
L1 FRAME D_OUT_STATE USB D CHANNEL
|
|
-------- ----------- --- ---------
|
|
|
|
-> [xx...xx] IDLE
|
|
WAIT_FOR_STOP <> OUT_D_COUNTER=0
|
|
WAIT_FOR_RESET <> Reset pipe
|
|
STOP
|
|
INIT_LONG_FRAME -> [7Exx..xx]
|
|
WAIT_DEN <> OUT_D_COUNTER=16
|
|
OUT_NORMAL <- DEN_EVENT -> 7Exx
|
|
END_OF_FRAME_BUSY -> [xxxx] xxxx
|
|
END_OF_FRAME_NOT_BUSY -> [xxxx] xxxx
|
|
-> [xxxx] xxxx
|
|
-> [C1C2] xxxx
|
|
-> [7EFF] xxxx
|
|
xxxx
|
|
xxxx
|
|
....
|
|
xxxx
|
|
C1C2
|
|
7EFF
|
|
<- D_UNDERRUN <- (> 8ms)
|
|
WAIT_FOR_STOP <> OUT_D_COUNTER=0
|
|
WAIT_FOR_RESET <> Reset pipe
|
|
STOP
|
|
|
|
*/
|
|
|
|
static struct Fsm dout_fsm;
|
|
|
|
static char *strDoutState[] =
|
|
{
|
|
"ST_DOUT_NONE",
|
|
|
|
"ST_DOUT_SHORT_INIT",
|
|
"ST_DOUT_SHORT_WAIT_DEN",
|
|
|
|
"ST_DOUT_LONG_INIT",
|
|
"ST_DOUT_LONG_WAIT_DEN",
|
|
"ST_DOUT_NORMAL",
|
|
|
|
"ST_DOUT_WAIT_FOR_UNDERRUN",
|
|
"ST_DOUT_WAIT_FOR_NOT_BUSY",
|
|
"ST_DOUT_WAIT_FOR_STOP",
|
|
"ST_DOUT_WAIT_FOR_RESET",
|
|
};
|
|
|
|
static char *strDoutEvent[] =
|
|
{
|
|
"EV_DOUT_START_XMIT",
|
|
"EV_DOUT_COMPLETE",
|
|
"EV_DOUT_DEN",
|
|
"EV_DOUT_RESETED",
|
|
"EV_DOUT_STOPPED",
|
|
"EV_DOUT_COLL",
|
|
"EV_DOUT_UNDERRUN",
|
|
};
|
|
|
|
static void dout_debug(struct FsmInst *fi, char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
char buf[256];
|
|
|
|
va_start(args, fmt);
|
|
vsnprintf(buf, sizeof(buf), fmt, args);
|
|
DBG(0x2, "%s", buf);
|
|
va_end(args);
|
|
}
|
|
|
|
static void dout_stop_event(void *context)
|
|
{
|
|
struct st5481_adapter *adapter = context;
|
|
|
|
FsmEvent(&adapter->d_out.fsm, EV_DOUT_STOPPED, NULL);
|
|
}
|
|
|
|
/*
|
|
* Start the transfer of a D channel frame.
|
|
*/
|
|
static void usb_d_out(struct st5481_adapter *adapter, int buf_nr)
|
|
{
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
struct urb *urb;
|
|
unsigned int num_packets, packet_offset;
|
|
int len, buf_size, bytes_sent;
|
|
struct sk_buff *skb;
|
|
struct usb_iso_packet_descriptor *desc;
|
|
|
|
if (d_out->fsm.state != ST_DOUT_NORMAL)
|
|
return;
|
|
|
|
if (test_and_set_bit(buf_nr, &d_out->busy)) {
|
|
DBG(2, "ep %d urb %d busy %#lx", EP_D_OUT, buf_nr, d_out->busy);
|
|
return;
|
|
}
|
|
urb = d_out->urb[buf_nr];
|
|
|
|
skb = d_out->tx_skb;
|
|
|
|
buf_size = NUM_ISO_PACKETS_D * SIZE_ISO_PACKETS_D_OUT;
|
|
|
|
if (skb) {
|
|
len = isdnhdlc_encode(&d_out->hdlc_state,
|
|
skb->data, skb->len, &bytes_sent,
|
|
urb->transfer_buffer, buf_size);
|
|
skb_pull(skb,bytes_sent);
|
|
} else {
|
|
// Send flags or idle
|
|
len = isdnhdlc_encode(&d_out->hdlc_state,
|
|
NULL, 0, &bytes_sent,
|
|
urb->transfer_buffer, buf_size);
|
|
}
|
|
|
|
if (len < buf_size) {
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_UNDERRUN);
|
|
}
|
|
if (skb && !skb->len) {
|
|
d_out->tx_skb = NULL;
|
|
D_L1L2(adapter, PH_DATA | CONFIRM, NULL);
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
// Prepare the URB
|
|
urb->transfer_buffer_length = len;
|
|
num_packets = 0;
|
|
packet_offset = 0;
|
|
while (packet_offset < len) {
|
|
desc = &urb->iso_frame_desc[num_packets];
|
|
desc->offset = packet_offset;
|
|
desc->length = SIZE_ISO_PACKETS_D_OUT;
|
|
if (len - packet_offset < desc->length)
|
|
desc->length = len - packet_offset;
|
|
num_packets++;
|
|
packet_offset += desc->length;
|
|
}
|
|
urb->number_of_packets = num_packets;
|
|
|
|
// Prepare the URB
|
|
urb->dev = adapter->usb_dev;
|
|
// Need to transmit the next buffer 2ms after the DEN_EVENT
|
|
urb->transfer_flags = 0;
|
|
urb->start_frame = usb_get_current_frame_number(adapter->usb_dev)+2;
|
|
|
|
DBG_ISO_PACKET(0x20,urb);
|
|
|
|
if (usb_submit_urb(urb, GFP_KERNEL) < 0) {
|
|
// There is another URB queued up
|
|
urb->transfer_flags = URB_ISO_ASAP;
|
|
SUBMIT_URB(urb, GFP_KERNEL);
|
|
}
|
|
}
|
|
|
|
static void fifo_reseted(void *context)
|
|
{
|
|
struct st5481_adapter *adapter = context;
|
|
|
|
FsmEvent(&adapter->d_out.fsm, EV_DOUT_RESETED, NULL);
|
|
}
|
|
|
|
static void usb_d_out_complete(struct urb *urb)
|
|
{
|
|
struct st5481_adapter *adapter = urb->context;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
long buf_nr;
|
|
|
|
DBG(2, "");
|
|
|
|
buf_nr = get_buf_nr(d_out->urb, urb);
|
|
test_and_clear_bit(buf_nr, &d_out->busy);
|
|
|
|
if (unlikely(urb->status < 0)) {
|
|
switch (urb->status) {
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
case -ECONNRESET:
|
|
DBG(1,"urb killed status %d", urb->status);
|
|
break;
|
|
default:
|
|
WARNING("urb status %d",urb->status);
|
|
if (d_out->busy == 0) {
|
|
st5481_usb_pipe_reset(adapter, EP_D_OUT | USB_DIR_OUT, fifo_reseted, adapter);
|
|
}
|
|
break;
|
|
}
|
|
return; // Give up
|
|
}
|
|
|
|
FsmEvent(&adapter->d_out.fsm, EV_DOUT_COMPLETE, (void *) buf_nr);
|
|
}
|
|
|
|
/* ====================================================================== */
|
|
|
|
static void dout_start_xmit(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
// FIXME unify?
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
struct urb *urb;
|
|
int len, bytes_sent;
|
|
struct sk_buff *skb;
|
|
int buf_nr = 0;
|
|
|
|
skb = d_out->tx_skb;
|
|
|
|
DBG(2,"len=%d",skb->len);
|
|
|
|
isdnhdlc_out_init(&d_out->hdlc_state, HDLC_DCHANNEL | HDLC_BITREVERSE);
|
|
|
|
if (test_and_set_bit(buf_nr, &d_out->busy)) {
|
|
WARNING("ep %d urb %d busy %#lx", EP_D_OUT, buf_nr, d_out->busy);
|
|
return;
|
|
}
|
|
urb = d_out->urb[buf_nr];
|
|
|
|
DBG_SKB(0x10, skb);
|
|
len = isdnhdlc_encode(&d_out->hdlc_state,
|
|
skb->data, skb->len, &bytes_sent,
|
|
urb->transfer_buffer, 16);
|
|
skb_pull(skb, bytes_sent);
|
|
|
|
if(len < 16)
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_SHORT_INIT);
|
|
else
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_LONG_INIT);
|
|
|
|
if (skb->len == 0) {
|
|
d_out->tx_skb = NULL;
|
|
D_L1L2(adapter, PH_DATA | CONFIRM, NULL);
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
// Prepare the URB
|
|
urb->transfer_buffer_length = len;
|
|
|
|
urb->iso_frame_desc[0].offset = 0;
|
|
urb->iso_frame_desc[0].length = len;
|
|
urb->number_of_packets = 1;
|
|
|
|
// Prepare the URB
|
|
urb->dev = adapter->usb_dev;
|
|
urb->transfer_flags = URB_ISO_ASAP;
|
|
|
|
DBG_ISO_PACKET(0x20,urb);
|
|
SUBMIT_URB(urb, GFP_KERNEL);
|
|
}
|
|
|
|
static void dout_short_fifo(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_SHORT_WAIT_DEN);
|
|
st5481_usb_device_ctrl_msg(adapter, OUT_D_COUNTER, 16, NULL, NULL);
|
|
}
|
|
|
|
static void dout_end_short_frame(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_UNDERRUN);
|
|
}
|
|
|
|
static void dout_long_enable_fifo(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
st5481_usb_device_ctrl_msg(adapter, OUT_D_COUNTER, 16, NULL, NULL);
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_LONG_WAIT_DEN);
|
|
}
|
|
|
|
static void dout_long_den(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_NORMAL);
|
|
usb_d_out(adapter, 0);
|
|
usb_d_out(adapter, 1);
|
|
}
|
|
|
|
static void dout_reset(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_RESET);
|
|
st5481_usb_pipe_reset(adapter, EP_D_OUT | USB_DIR_OUT, fifo_reseted, adapter);
|
|
}
|
|
|
|
static void dout_stop(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_STOP);
|
|
st5481_usb_device_ctrl_msg(adapter, OUT_D_COUNTER, 0, dout_stop_event, adapter);
|
|
}
|
|
|
|
static void dout_underrun(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
if (test_bit(0, &d_out->busy) || test_bit(1, &d_out->busy)) {
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_NOT_BUSY);
|
|
} else {
|
|
dout_stop(fsm, event, arg);
|
|
}
|
|
}
|
|
|
|
static void dout_check_busy(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
if (!test_bit(0, &d_out->busy) && !test_bit(1, &d_out->busy))
|
|
dout_stop(fsm, event, arg);
|
|
}
|
|
|
|
static void dout_reseted(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_NONE);
|
|
// FIXME locking
|
|
if (d_out->tx_skb)
|
|
FsmEvent(&d_out->fsm, EV_DOUT_START_XMIT, NULL);
|
|
}
|
|
|
|
static void dout_complete(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = fsm->userdata;
|
|
long buf_nr = (long) arg;
|
|
|
|
usb_d_out(adapter, buf_nr);
|
|
}
|
|
|
|
static void dout_ignore(struct FsmInst *fsm, int event, void *arg)
|
|
{
|
|
}
|
|
|
|
static struct FsmNode DoutFnList[] __initdata =
|
|
{
|
|
{ST_DOUT_NONE, EV_DOUT_START_XMIT, dout_start_xmit},
|
|
|
|
{ST_DOUT_SHORT_INIT, EV_DOUT_COMPLETE, dout_short_fifo},
|
|
|
|
{ST_DOUT_SHORT_WAIT_DEN, EV_DOUT_DEN, dout_end_short_frame},
|
|
{ST_DOUT_SHORT_WAIT_DEN, EV_DOUT_UNDERRUN, dout_underrun},
|
|
|
|
{ST_DOUT_LONG_INIT, EV_DOUT_COMPLETE, dout_long_enable_fifo},
|
|
|
|
{ST_DOUT_LONG_WAIT_DEN, EV_DOUT_DEN, dout_long_den},
|
|
{ST_DOUT_LONG_WAIT_DEN, EV_DOUT_UNDERRUN, dout_underrun},
|
|
|
|
{ST_DOUT_NORMAL, EV_DOUT_UNDERRUN, dout_underrun},
|
|
{ST_DOUT_NORMAL, EV_DOUT_COMPLETE, dout_complete},
|
|
|
|
{ST_DOUT_WAIT_FOR_UNDERRUN, EV_DOUT_UNDERRUN, dout_underrun},
|
|
{ST_DOUT_WAIT_FOR_UNDERRUN, EV_DOUT_COMPLETE, dout_ignore},
|
|
|
|
{ST_DOUT_WAIT_FOR_NOT_BUSY, EV_DOUT_COMPLETE, dout_check_busy},
|
|
|
|
{ST_DOUT_WAIT_FOR_STOP, EV_DOUT_STOPPED, dout_reset},
|
|
|
|
{ST_DOUT_WAIT_FOR_RESET, EV_DOUT_RESETED, dout_reseted},
|
|
};
|
|
|
|
void st5481_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg)
|
|
{
|
|
struct st5481_adapter *adapter = hisax_d_if->priv;
|
|
struct sk_buff *skb = arg;
|
|
|
|
switch (pr) {
|
|
case PH_ACTIVATE | REQUEST:
|
|
FsmEvent(&adapter->l1m, EV_PH_ACTIVATE_REQ, NULL);
|
|
break;
|
|
case PH_DEACTIVATE | REQUEST:
|
|
FsmEvent(&adapter->l1m, EV_PH_DEACTIVATE_REQ, NULL);
|
|
break;
|
|
case PH_DATA | REQUEST:
|
|
DBG(2, "PH_DATA REQUEST len %d", skb->len);
|
|
BUG_ON(adapter->d_out.tx_skb);
|
|
adapter->d_out.tx_skb = skb;
|
|
FsmEvent(&adapter->d_out.fsm, EV_DOUT_START_XMIT, NULL);
|
|
break;
|
|
default:
|
|
WARNING("pr %#x\n", pr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* ======================================================================
|
|
*/
|
|
|
|
/*
|
|
* Start receiving on the D channel since entered state F7.
|
|
*/
|
|
static void ph_connect(struct st5481_adapter *adapter)
|
|
{
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
struct st5481_in *d_in = &adapter->d_in;
|
|
|
|
DBG(8,"");
|
|
|
|
FsmChangeState(&d_out->fsm, ST_DOUT_NONE);
|
|
|
|
// st5481_usb_device_ctrl_msg(adapter, FFMSK_D, OUT_UNDERRUN, NULL, NULL);
|
|
st5481_usb_device_ctrl_msg(adapter, FFMSK_D, 0xfc, NULL, NULL);
|
|
st5481_in_mode(d_in, L1_MODE_HDLC);
|
|
|
|
#ifdef LOOPBACK
|
|
// Turn loopback on (data sent on B and D looped back)
|
|
st5481_usb_device_ctrl_msg(cs, LBB, 0x04, NULL, NULL);
|
|
#endif
|
|
|
|
st5481_usb_pipe_reset(adapter, EP_D_OUT | USB_DIR_OUT, NULL, NULL);
|
|
|
|
// Turn on the green LED to tell that we are in state F7
|
|
adapter->leds |= GREEN_LED;
|
|
st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, adapter->leds, NULL, NULL);
|
|
}
|
|
|
|
/*
|
|
* Stop receiving on the D channel since not in state F7.
|
|
*/
|
|
static void ph_disconnect(struct st5481_adapter *adapter)
|
|
{
|
|
DBG(8,"");
|
|
|
|
st5481_in_mode(&adapter->d_in, L1_MODE_NULL);
|
|
|
|
// Turn off the green LED to tell that we left state F7
|
|
adapter->leds &= ~GREEN_LED;
|
|
st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, adapter->leds, NULL, NULL);
|
|
}
|
|
|
|
static int st5481_setup_d_out(struct st5481_adapter *adapter)
|
|
{
|
|
struct usb_device *dev = adapter->usb_dev;
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *altsetting = NULL;
|
|
struct usb_host_endpoint *endpoint;
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
DBG(2,"");
|
|
|
|
intf = usb_ifnum_to_if(dev, 0);
|
|
if (intf)
|
|
altsetting = usb_altnum_to_altsetting(intf, 3);
|
|
if (!altsetting)
|
|
return -ENXIO;
|
|
|
|
// Allocate URBs and buffers for the D channel out
|
|
endpoint = &altsetting->endpoint[EP_D_OUT-1];
|
|
|
|
DBG(2,"endpoint address=%02x,packet size=%d",
|
|
endpoint->desc.bEndpointAddress, le16_to_cpu(endpoint->desc.wMaxPacketSize));
|
|
|
|
return st5481_setup_isocpipes(d_out->urb, dev,
|
|
usb_sndisocpipe(dev, endpoint->desc.bEndpointAddress),
|
|
NUM_ISO_PACKETS_D, SIZE_ISO_PACKETS_D_OUT,
|
|
NUM_ISO_PACKETS_D * SIZE_ISO_PACKETS_D_OUT,
|
|
usb_d_out_complete, adapter);
|
|
}
|
|
|
|
static void st5481_release_d_out(struct st5481_adapter *adapter)
|
|
{
|
|
struct st5481_d_out *d_out = &adapter->d_out;
|
|
|
|
DBG(2,"");
|
|
|
|
st5481_release_isocpipes(d_out->urb);
|
|
}
|
|
|
|
int st5481_setup_d(struct st5481_adapter *adapter)
|
|
{
|
|
int retval;
|
|
|
|
DBG(2,"");
|
|
|
|
retval = st5481_setup_d_out(adapter);
|
|
if (retval)
|
|
goto err;
|
|
adapter->d_in.bufsize = MAX_DFRAME_LEN_L1;
|
|
adapter->d_in.num_packets = NUM_ISO_PACKETS_D;
|
|
adapter->d_in.packet_size = SIZE_ISO_PACKETS_D_IN;
|
|
adapter->d_in.ep = EP_D_IN | USB_DIR_IN;
|
|
adapter->d_in.counter = IN_D_COUNTER;
|
|
adapter->d_in.adapter = adapter;
|
|
adapter->d_in.hisax_if = &adapter->hisax_d_if.ifc;
|
|
retval = st5481_setup_in(&adapter->d_in);
|
|
if (retval)
|
|
goto err_d_out;
|
|
|
|
adapter->l1m.fsm = &l1fsm;
|
|
adapter->l1m.state = ST_L1_F3;
|
|
adapter->l1m.debug = st5481_debug & 0x100;
|
|
adapter->l1m.userdata = adapter;
|
|
adapter->l1m.printdebug = l1m_debug;
|
|
FsmInitTimer(&adapter->l1m, &adapter->timer);
|
|
|
|
adapter->d_out.fsm.fsm = &dout_fsm;
|
|
adapter->d_out.fsm.state = ST_DOUT_NONE;
|
|
adapter->d_out.fsm.debug = st5481_debug & 0x100;
|
|
adapter->d_out.fsm.userdata = adapter;
|
|
adapter->d_out.fsm.printdebug = dout_debug;
|
|
|
|
return 0;
|
|
|
|
err_d_out:
|
|
st5481_release_d_out(adapter);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
void st5481_release_d(struct st5481_adapter *adapter)
|
|
{
|
|
DBG(2,"");
|
|
|
|
st5481_release_in(&adapter->d_in);
|
|
st5481_release_d_out(adapter);
|
|
}
|
|
|
|
/* ======================================================================
|
|
* init / exit
|
|
*/
|
|
|
|
int __init st5481_d_init(void)
|
|
{
|
|
int retval;
|
|
|
|
l1fsm.state_count = L1_STATE_COUNT;
|
|
l1fsm.event_count = L1_EVENT_COUNT;
|
|
l1fsm.strEvent = strL1Event;
|
|
l1fsm.strState = strL1State;
|
|
retval = FsmNew(&l1fsm, L1FnList, ARRAY_SIZE(L1FnList));
|
|
if (retval)
|
|
goto err;
|
|
|
|
dout_fsm.state_count = DOUT_STATE_COUNT;
|
|
dout_fsm.event_count = DOUT_EVENT_COUNT;
|
|
dout_fsm.strEvent = strDoutEvent;
|
|
dout_fsm.strState = strDoutState;
|
|
retval = FsmNew(&dout_fsm, DoutFnList, ARRAY_SIZE(DoutFnList));
|
|
if (retval)
|
|
goto err_l1;
|
|
|
|
return 0;
|
|
|
|
err_l1:
|
|
FsmFree(&l1fsm);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
// can't be __exit
|
|
void st5481_d_exit(void)
|
|
{
|
|
FsmFree(&l1fsm);
|
|
FsmFree(&dout_fsm);
|
|
}
|