ixj.c

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		ixj_PreIoctl = &Stub;
		break;
	case POST_IOCTL:
		ixj_PostIoctl = &Stub;
		break;
	default:
		retval = 1;
	}
	return retval;
}

EXPORT_SYMBOL(ixj_unregister);

static void ixj_init_timer(IXJ *j)
{
	init_timer(&j->timer);
	j->timer.function = ixj_timeout;
	j->timer.data = (unsigned long)j;
}

static void ixj_add_timer(IXJ *j)
{
	j->timer.expires = jiffies + (hertz / samplerate);
	add_timer(&j->timer);
}

static void ixj_tone_timeout(IXJ *j)
{
	IXJ_TONE ti;

	j->tone_state++;
	if (j->tone_state == 3) {
		j->tone_state = 0;
		if (j->cadence_t) {
			j->tone_cadence_state++;
			if (j->tone_cadence_state >= j->cadence_t->elements_used) {
				switch (j->cadence_t->termination) {
				case PLAY_ONCE:
					ixj_cpt_stop(j);
					break;
				case REPEAT_LAST_ELEMENT:
					j->tone_cadence_state--;
					ixj_play_tone(j, j->cadence_t->ce[j->tone_cadence_state].index);
					break;
				case REPEAT_ALL:
					j->tone_cadence_state = 0;
					if (j->cadence_t->ce[j->tone_cadence_state].freq0) {
						ti.tone_index = j->cadence_t->ce[j->tone_cadence_state].index;
						ti.freq0 = j->cadence_t->ce[j->tone_cadence_state].freq0;
						ti.gain0 = j->cadence_t->ce[j->tone_cadence_state].gain0;
						ti.freq1 = j->cadence_t->ce[j->tone_cadence_state].freq1;
						ti.gain1 = j->cadence_t->ce[j->tone_cadence_state].gain1;
						ixj_init_tone(j, &ti);
					}
					ixj_set_tone_on(j->cadence_t->ce[0].tone_on_time, j);
					ixj_set_tone_off(j->cadence_t->ce[0].tone_off_time, j);
					ixj_play_tone(j, j->cadence_t->ce[0].index);
					break;
				}
			} else {
				if (j->cadence_t->ce[j->tone_cadence_state].gain0) {
					ti.tone_index = j->cadence_t->ce[j->tone_cadence_state].index;
					ti.freq0 = j->cadence_t->ce[j->tone_cadence_state].freq0;
					ti.gain0 = j->cadence_t->ce[j->tone_cadence_state].gain0;
					ti.freq1 = j->cadence_t->ce[j->tone_cadence_state].freq1;
					ti.gain1 = j->cadence_t->ce[j->tone_cadence_state].gain1;
					ixj_init_tone(j, &ti);
				}
				ixj_set_tone_on(j->cadence_t->ce[j->tone_cadence_state].tone_on_time, j);
				ixj_set_tone_off(j->cadence_t->ce[j->tone_cadence_state].tone_off_time, j);
				ixj_play_tone(j, j->cadence_t->ce[j->tone_cadence_state].index);
			}
		}
	}
}

static inline void ixj_kill_fasync(IXJ *j, IXJ_SIGEVENT event, int dir)
{
	if(j->ixj_signals[event]) {
		if(ixjdebug & 0x0100)
			printk("Sending signal for event %d\n", event);
			/* Send apps notice of change */
		/* see config.h for macro definition */
		kill_fasync(&(j->async_queue), j->ixj_signals[event], dir);
	}
}

static void ixj_pstn_state(IXJ *j)
{
	int var;
	union XOPXR0 XR0, daaint;

	var = 10;

	XR0.reg = j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.reg;
	daaint.reg = 0;
	XR0.bitreg.RMR = j->m_DAAShadowRegs.SOP_REGS.SOP.cr1.bitreg.RMR;

	j->pld_scrr.byte = inb_p(j->XILINXbase);
	if (j->pld_scrr.bits.daaflag) {
		daa_int_read(j);
		if(j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.RING) {
			if(time_after(jiffies, j->pstn_sleeptil) && !(j->flags.pots_pstn && j->hookstate)) {
				daaint.bitreg.RING = 1;
				if(ixjdebug & 0x0008) {
					printk(KERN_INFO "IXJ DAA Ring Interrupt /dev/phone%d at %ld\n", j->board, jiffies);
				}
			} else {
				daa_set_mode(j, SOP_PU_RESET);
			}
		}
		if(j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.Caller_ID) {
			daaint.bitreg.Caller_ID = 1;
			j->pstn_cid_intr = 1;
			j->pstn_cid_received = jiffies;
			if(ixjdebug & 0x0008) {
				printk(KERN_INFO "IXJ DAA Caller_ID Interrupt /dev/phone%d at %ld\n", j->board, jiffies);
			}
		}
		if(j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.Cadence) {
			daaint.bitreg.Cadence = 1;
			if(ixjdebug & 0x0008) {
				printk(KERN_INFO "IXJ DAA Cadence Interrupt /dev/phone%d at %ld\n", j->board, jiffies);
			}
		}
		if(j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.VDD_OK != XR0.bitreg.VDD_OK) {
			daaint.bitreg.VDD_OK = 1;
			daaint.bitreg.SI_0 = j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.VDD_OK;
		}
	}
	daa_CR_read(j, 1);
	if(j->m_DAAShadowRegs.SOP_REGS.SOP.cr1.bitreg.RMR != XR0.bitreg.RMR && time_after(jiffies, j->pstn_sleeptil) && !(j->flags.pots_pstn && j->hookstate)) {
		daaint.bitreg.RMR = 1;
		daaint.bitreg.SI_1 = j->m_DAAShadowRegs.SOP_REGS.SOP.cr1.bitreg.RMR;
		if(ixjdebug & 0x0008) {
                        printk(KERN_INFO "IXJ DAA RMR /dev/phone%d was %s for %ld\n", j->board, XR0.bitreg.RMR?"on":"off", jiffies - j->pstn_last_rmr);
		}
		j->pstn_prev_rmr = j->pstn_last_rmr;
		j->pstn_last_rmr = jiffies;
	}
	switch(j->daa_mode) {
		case SOP_PU_SLEEP:
			if (daaint.bitreg.RING) {
				if (!j->flags.pstn_ringing) {
					if (j->daa_mode != SOP_PU_RINGING) {
						j->pstn_ring_int = jiffies;
						daa_set_mode(j, SOP_PU_RINGING);
					}
				}
			}
			break;
		case SOP_PU_RINGING:
			if (daaint.bitreg.RMR) {
				if (ixjdebug & 0x0008) {
					printk(KERN_INFO "IXJ Ring Cadence a state = %d /dev/phone%d at %ld\n", j->cadence_f[4].state, j->board, jiffies);
				}
				if (daaint.bitreg.SI_1) {                /* Rising edge of RMR */
					j->flags.pstn_rmr = 1;
					j->pstn_ring_start = jiffies;
					j->pstn_ring_stop = 0;
					j->ex.bits.pstn_ring = 0;
					if (j->cadence_f[4].state == 0) {
						j->cadence_f[4].state = 1;
						j->cadence_f[4].on1min = jiffies + (long)((j->cadence_f[4].on1 * hertz * (100 - var)) / 10000);
						j->cadence_f[4].on1dot = jiffies + (long)((j->cadence_f[4].on1 * hertz * (100)) / 10000);
						j->cadence_f[4].on1max = jiffies + (long)((j->cadence_f[4].on1 * hertz * (100 + var)) / 10000);
					} else if (j->cadence_f[4].state == 2) {
						if((time_after(jiffies, j->cadence_f[4].off1min) &&
						    time_before(jiffies, j->cadence_f[4].off1max))) {
							if (j->cadence_f[4].on2) {
								j->cadence_f[4].state = 3;
								j->cadence_f[4].on2min = jiffies + (long)((j->cadence_f[4].on2 * (hertz * (100 - var)) / 10000));
								j->cadence_f[4].on2dot = jiffies + (long)((j->cadence_f[4].on2 * (hertz * (100)) / 10000));
								j->cadence_f[4].on2max = jiffies + (long)((j->cadence_f[4].on2 * (hertz * (100 + var)) / 10000));
							} else {
								j->cadence_f[4].state = 7;
							}
						} else {
							if (ixjdebug & 0x0008) {
								printk(KERN_INFO "IXJ Ring Cadence fail state = %d /dev/phone%d at %ld should be %d\n",
										j->cadence_f[4].state, j->board, jiffies - j->pstn_prev_rmr,
										j->cadence_f[4].off1);
							}
							j->cadence_f[4].state = 0;
						}
					} else if (j->cadence_f[4].state == 4) {
						if((time_after(jiffies, j->cadence_f[4].off2min) &&
						    time_before(jiffies, j->cadence_f[4].off2max))) {
							if (j->cadence_f[4].on3) {
								j->cadence_f[4].state = 5;
								j->cadence_f[4].on3min = jiffies + (long)((j->cadence_f[4].on3 * (hertz * (100 - var)) / 10000));
								j->cadence_f[4].on3dot = jiffies + (long)((j->cadence_f[4].on3 * (hertz * (100)) / 10000));
								j->cadence_f[4].on3max = jiffies + (long)((j->cadence_f[4].on3 * (hertz * (100 + var)) / 10000));
							} else {
								j->cadence_f[4].state = 7;
							}
						} else {
							if (ixjdebug & 0x0008) {
								printk(KERN_INFO "IXJ Ring Cadence fail state = %d /dev/phone%d at %ld should be %d\n",
										j->cadence_f[4].state, j->board, jiffies - j->pstn_prev_rmr,
										j->cadence_f[4].off2);
							}
							j->cadence_f[4].state = 0;
						}
					} else if (j->cadence_f[4].state == 6) {
						if((time_after(jiffies, j->cadence_f[4].off3min) &&
						    time_before(jiffies, j->cadence_f[4].off3max))) {
							j->cadence_f[4].state = 7;
						} else {
							if (ixjdebug & 0x0008) {
								printk(KERN_INFO "IXJ Ring Cadence fail state = %d /dev/phone%d at %ld should be %d\n",
										j->cadence_f[4].state, j->board, jiffies - j->pstn_prev_rmr,
										j->cadence_f[4].off3);
							}
							j->cadence_f[4].state = 0;
						}
					} else {
						j->cadence_f[4].state = 0;
					}
				} else {                                /* Falling edge of RMR */
					j->pstn_ring_start = 0;
					j->pstn_ring_stop = jiffies;
					if (j->cadence_f[4].state == 1) {
						if(!j->cadence_f[4].on1) {
							j->cadence_f[4].state = 7;
						} else if((time_after(jiffies, j->cadence_f[4].on1min) &&
					          time_before(jiffies, j->cadence_f[4].on1max))) {
							if (j->cadence_f[4].off1) {
								j->cadence_f[4].state = 2;
								j->cadence_f[4].off1min = jiffies + (long)((j->cadence_f[4].off1 * (hertz * (100 - var)) / 10000));
								j->cadence_f[4].off1dot = jiffies + (long)((j->cadence_f[4].off1 * (hertz * (100)) / 10000));
								j->cadence_f[4].off1max = jiffies + (long)((j->cadence_f[4].off1 * (hertz * (100 + var)) / 10000));
							} else {
								j->cadence_f[4].state = 7;
							}
						} else {
							if (ixjdebug & 0x0008) {
								printk(KERN_INFO "IXJ Ring Cadence fail state = %d /dev/phone%d at %ld should be %d\n",
										j->cadence_f[4].state, j->board, jiffies - j->pstn_prev_rmr,
										j->cadence_f[4].on1);
							}
							j->cadence_f[4].state = 0;
						}
					} else if (j->cadence_f[4].state == 3) {
						if((time_after(jiffies, j->cadence_f[4].on2min) &&
						    time_before(jiffies, j->cadence_f[4].on2max))) {
							if (j->cadence_f[4].off2) {
								j->cadence_f[4].state = 4;
								j->cadence_f[4].off2min = jiffies + (long)((j->cadence_f[4].off2 * (hertz * (100 - var)) / 10000));
								j->cadence_f[4].off2dot = jiffies + (long)((j->cadence_f[4].off2 * (hertz * (100)) / 10000));
								j->cadence_f[4].off2max = jiffies + (long)((j->cadence_f[4].off2 * (hertz * (100 + var)) / 10000));
							} else {
								j->cadence_f[4].state = 7;
							}
						} else {
							if (ixjdebug & 0x0008) {
								printk(KERN_INFO "IXJ Ring Cadence fail state = %d /dev/phone%d at %ld should be %d\n",
										j->cadence_f[4].state, j->board, jiffies - j->pstn_prev_rmr,
										j->cadence_f[4].on2);
							}
							j->cadence_f[4].state = 0;
						}
					} else if (j->cadence_f[4].state == 5) {
						if((time_after(jiffies, j->cadence_f[4].on3min) &&
						    time_before(jiffies, j->cadence_f[4].on3max))) {
							if (j->cadence_f[4].off3) {
								j->cadence_f[4].state = 6;
								j->cadence_f[4].off3min = jiffies + (long)((j->cadence_f[4].off3 * (hertz * (100 - var)) / 10000));
								j->cadence_f[4].off3dot = jiffies + (long)((j->cadence_f[4].off3 * (hertz * (100)) / 10000));
								j->cadence_f[4].off3max = jiffies + (long)((j->cadence_f[4].off3 * (hertz * (100 + var)) / 10000));
							} else {
								j->cadence_f[4].state = 7;
							}
						} else {
							j->cadence_f[4].state = 0;
						}
					} else {
						if (ixjdebug & 0x0008) {
							printk(KERN_INFO "IXJ Ring Cadence fail state = %d /dev/phone%d at %ld should be %d\n",
									j->cadence_f[4].state, j->board, jiffies - j->pstn_prev_rmr,
									j->cadence_f[4].on3);
						}
						j->cadence_f[4].state = 0;
					}
				}
				if (ixjdebug & 0x0010) {
					printk(KERN_INFO "IXJ Ring Cadence b state = %d /dev/phone%d at %ld\n", j->cadence_f[4].state, j->board, jiffies);
				}
				if (ixjdebug & 0x0010) {
					switch(j->cadence_f[4].state) {
						case 1:
							printk(KERN_INFO "IXJ /dev/phone%d Next Ring Cadence state at %u min %ld - %ld - max %ld\n", j->board,
						j->cadence_f[4].on1, j->cadence_f[4].on1min, j->cadence_f[4].on1dot, j->cadence_f[4].on1max);
							break;
						case 2:
							printk(KERN_INFO "IXJ /dev/phone%d Next Ring Cadence state at %u min %ld - %ld - max %ld\n", j->board,
						j->cadence_f[4].off1, j->cadence_f[4].off1min, j->cadence_f[4].off1dot, j->cadence_f[4].off1max);
							break;
						case 3:
							printk(KERN_INFO "IXJ /dev/phone%d Next Ring Cadence state at %u min %ld - %ld - max %ld\n", j->board,
						j->cadence_f[4].on2, j->cadence_f[4].on2min, j->cadence_f[4].on2dot, j->cadence_f[4].on2max);
							break;
						case 4:
							printk(KERN_INFO "IXJ /dev/phone%d Next Ring Cadence state at %u min %ld - %ld - max %ld\n", j->board,
						j->cadence_f[4].off2, j->cadence_f[4].off2min, j->cadence_f[4].off2dot, j->cadence_f[4].off2max);
							break;
						case 5:
							printk(KERN_INFO "IXJ /dev/phone%d Next Ring Cadence state at %u min %ld - %ld - max %ld\n", j->board,
						j->cadence_f[4].on3, j->cadence_f[4].on3min, j->cadence_f[4].on3dot, j->cadence_f[4].on3max);
							break;
						case 6:	
							printk(KERN_INFO "IXJ /dev/phone%d Next Ring Cadence state at %u min %ld - %ld - max %ld\n", j->board,
						j->cadence_f[4].off3, j->cadence_f[4].off3min, j->cadence_f[4].off3dot, j->cadence_f[4].off3max);
							break;
					}
				}
			}
			if (j->cadence_f[4].state == 7) {
				j->cadence_f[4].state = 0;
				j->pstn_ring_stop = jiffies;
				j->ex.bits.pstn_ring = 1;
				ixj_kill_fasync(j, SIG_PSTN_RING, POLL_IN);
				if(ixjdebug & 0x0008) {
					printk(KERN_INFO "IXJ Ring int set /dev/phone%d at %ld\n", j->board, jiffies);
				}
			}
			if((j->pstn_ring_int != 0 && time_after(jiffies, j->pstn_ring_int + (hertz * 5)) && !j->flags.pstn_rmr) ||
			   (j->pstn_ring_stop != 0 && time_after(jiffies, j->pstn_ring_stop + (hertz * 5)))) {
				if(ixjdebug & 0x0008) {
					printk("IXJ DAA no ring in 5 seconds /dev/phone%d at %ld\n", j->board, jiffies);
					printk("IXJ DAA pstn ring int /dev/phone%d at %ld\n", j->board, j->pstn_ring_int);
					printk("IXJ DAA pstn ring stop /dev/phone%d at %ld\n", j->board, j->pstn_ring_stop);
				}
				j->pstn_ring_stop = j->pstn_ring_int = 0;
				daa_set_mode(j, SOP_PU_SLEEP);
			} 
			outb_p(j->pld_scrw.byte, j->XILINXbase);
			if (j->pstn_cid_intr && time_after(jiffies, j->pstn_cid_received + hertz)) {
				ixj_daa_cid_read(j);
				j->ex.bits.caller_id = 1;
				ixj_kill_fasync(j, SIG_CALLER_ID, POLL_IN);
				j->pstn_cid_intr = 0;
			}
			if (daaint.bitreg.Cadence) {
				if(ixjdebug & 0x0008) {
					printk("IXJ DAA Cadence interrupt going to sleep /dev/phone%d\n", j->board);
				}
				daa_set_mode(j, SOP_PU_SLEEP);
				j->ex.bits.pstn_ring = 0;
			}
			break;
		case SOP_PU_CONVERSATION:
			if (daaint.bitreg.VDD_OK) {
				if(!daaint.bitreg.SI_0) {
					if (!j->pstn_winkstart) {
						if(ixjdebug & 0x0008) {
							printk("IXJ DAA possible wink /dev/phone%d %ld\n", j->board, jiffies);
						}
						j->pstn_winkstart = jiffies;
					} 
				} else {
					if (j->pstn_winkstart) {
						if(ixjdebug & 0x0008) {
							printk("IXJ DAA possible wink end /dev/phone%d %ld\n", j->board, jiffies);
						}
						j->pstn_winkstart = 0;
					}
				}
			}
			if (j->pstn_winkstart && time_after(jiffies, j->pstn_winkstart + ((hertz * j->winktime) / 1000))) {
				if(ixjdebug & 0x0008) {
					printk("IXJ DAA wink detected going to sleep /dev/phone%d %ld\n", j->board, jiffies);
				}
				daa_set_mode(j, SOP_PU_SLEEP);
				j->pstn_winkstart = 0;
				j->ex.bits.pstn_wink = 1;
				ixj_kill_fasync(j, SIG_PSTN_WINK, POLL_IN);
			}
			break;
	}
}

static void ixj_timeout(unsigned long ptr)
{
	int board;
	unsigned long jifon;
	IXJ *j = (IXJ *)ptr;
	board = j->board;

	if (j->DSPbase && atomic_read(&j->DSPWrite) == 0 && test_and_set_bit(board, (void *)&j->busyflags) == 0) {
		ixj_perfmon(j->timerchecks);
		j->hookstate = ixj_hookstate(j);
		if (j->tone_state) {
			if (!(j->hookstate)) {
				ixj_cpt_stop(j);
				if (j->m_hook) {
					j->m_hook = 0;
					j->ex.bits.hookstate = 1;
					ixj_kill_fasync(j, SIG_HOOKSTATE, POLL_IN);
				}
				clear_bit(board, &j->busyflags);
				ixj_add_timer(j);
				return;
			}
			if (j->tone_state == 1)
				jifon = ((hertz * j->tone_on_time) * 25 / 100000);
			else
				jifon = ((hertz * j->tone_on_time) * 25 / 100000) + ((hertz * j->tone_off_time) * 25 / 100000);
			if (time_before(jiffies, j->tone_start_jif + jifon)) {
				if (j->tone_state == 1) {
					ixj_play_tone(j, j->tone_index);
					if (j->dsp.low == 0x20) {
						clear_bit(board, &j->busyflags);
						ixj_add_timer(j);
						return;
					}
				} else {
					ixj_play_tone(j, 0);
					if (j->dsp.low == 0x20) {
						clear_bit(board, &j->busyflags);
						ixj_add_timer(j);
						return;
					}
				}
			} else {
				ixj_tone_timeout(j);
				if (j->flags.dialtone) {
					ixj_dialtone(j);
				}
				if (j->flags.busytone) {
					ixj_busytone(j);
					if (j->dsp.low == 0x20) {
						clear_bit(board, &j->busyflags);
						ixj_add_timer(j);
						return;
					}