diff options
author | Kevin P. Fleming <kpfleming@digium.com> | 2008-05-21 15:11:48 +0000 |
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committer | Kevin P. Fleming <kpfleming@digium.com> | 2008-05-21 15:11:48 +0000 |
commit | 802b567e6c7ba7803a950324cbed13f7d57944cb (patch) | |
tree | 6b90ca3119aaa2e4073d3b651ac965dea5d3430e /drivers/dahdi/xpp/card_pri.c | |
parent | ec5ce88e015b41c2f46f6c9b783339b945f9502a (diff) |
start copying kernel bits
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@4315 a0bf4364-ded3-4de4-8d8a-66a801d63aff
Diffstat (limited to 'drivers/dahdi/xpp/card_pri.c')
-rw-r--r-- | drivers/dahdi/xpp/card_pri.c | 1632 |
1 files changed, 1632 insertions, 0 deletions
diff --git a/drivers/dahdi/xpp/card_pri.c b/drivers/dahdi/xpp/card_pri.c new file mode 100644 index 0000000..335b933 --- /dev/null +++ b/drivers/dahdi/xpp/card_pri.c @@ -0,0 +1,1632 @@ +/* + * Written by Oron Peled <oron@actcom.co.il> + * Copyright (C) 2004-2006, Xorcom + * + * Parts derived from Cologne demo driver for the chip. + * + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/delay.h> +#include "xpd.h" +#include "xproto.h" +#include "xpp_zap.h" +#include "card_pri.h" +#include "zap_debug.h" +#include "xpd.h" +#include "xbus-core.h" + +static const char rcsid[] = "$Id$"; + +static DEF_PARM(int, debug, 0, 0644, "Print DBG statements"); /* must be before zap_debug.h */ +static DEF_PARM(uint, poll_interval, 500, 0644, "Poll channel state interval in milliseconds (0 - disable)"); + +#define PRI_LINES_BITMASK BITMASK(31) +#define PRI_DCHAN_SIGCAP ( \ + ZT_SIG_EM | \ + ZT_SIG_CLEAR | \ + ZT_SIG_FXSLS | \ + ZT_SIG_FXSGS | \ + ZT_SIG_FXSKS | \ + ZT_SIG_FXOLS | \ + ZT_SIG_FXOGS | \ + ZT_SIG_FXOKS | \ + ZT_SIG_CAS | \ + ZT_SIG_DACS | \ + ZT_SIG_SF \ + ) +#define PRI_BCHAN_SIGCAP (ZT_SIG_CLEAR | ZT_SIG_DACS) +#define MAX_SLAVES 4 /* we have MUX of 4 clocks */ + +#define PRI_PORT(xpd) ((xpd)->addr.subunit) + +/*---------------- PRI Protocol Commands ----------------------------------*/ + +static bool pri_packet_is_valid(xpacket_t *pack); +static void pri_packet_dump(const char *msg, xpacket_t *pack); +static int proc_pri_info_read(char *page, char **start, off_t off, int count, int *eof, void *data); +static int proc_pri_info_write(struct file *file, const char __user *buffer, unsigned long count, void *data); +static int pri_startup(struct zt_span *span); +static int pri_shutdown(struct zt_span *span); +static int pri_lineconfig(xpd_t *xpd, int lineconfig); + +#define PROC_REGISTER_FNAME "slics" +#define PROC_PRI_INFO_FNAME "pri_info" + +enum pri_protocol { + PRI_PROTO_0 = 0, + PRI_PROTO_E1 = 1, + PRI_PROTO_T1 = 2, + PRI_PROTO_J1 = 3 +}; + +static const char *pri_protocol_name(enum pri_protocol pri_protocol) +{ + static const char *protocol_names[] = { + [PRI_PROTO_0] = "??", /* unkown */ + [PRI_PROTO_E1] = "E1", + [PRI_PROTO_T1] = "T1", + [PRI_PROTO_J1] = "J1" + }; + return protocol_names[pri_protocol]; +} + +static int pri_num_channels(enum pri_protocol pri_protocol) +{ + static int num_channels[] = { + [PRI_PROTO_0] = 0, + [PRI_PROTO_E1] = 31, + [PRI_PROTO_T1] = 24, + [PRI_PROTO_J1] = 0 + }; + return num_channels[pri_protocol]; +} + +static const char *type_name(enum pri_protocol pri_protocol, bool is_nt) +{ + static const char *names[2][4] = { + /* TE */ [0] = { + [PRI_PROTO_0] = "Unknown_TE", + [PRI_PROTO_E1] = "E1_TE", + [PRI_PROTO_T1] = "T1_TE", + [PRI_PROTO_J1] = "J1_TE" + }, + /* NT */ [1] = { + [PRI_PROTO_0] = "Unknown_NT", + [PRI_PROTO_E1] = "E1_NT", + [PRI_PROTO_T1] = "T1_NT", + [PRI_PROTO_J1] = "J1_NT" + } + }; + int term = (is_nt) ? 1 : 0; + + return names[term][pri_protocol]; +} + +static int pri_linecompat(enum pri_protocol pri_protocol) +{ + static const int linecompat[] = { + [PRI_PROTO_0] = 0, + [PRI_PROTO_E1] = + /* coding */ + ZT_CONFIG_CCS | + // CAS | + ZT_CONFIG_CRC4 | + /* framing */ + ZT_CONFIG_AMI | ZT_CONFIG_HDB3, + [PRI_PROTO_T1] = + /* coding */ + // ZT_CONFIG_D4 | + ZT_CONFIG_ESF | + /* framing */ + ZT_CONFIG_AMI | ZT_CONFIG_B8ZS, + [PRI_PROTO_J1] = 0 + }; + + DBG(GENERAL, "pri_linecompat: pri_protocol=%d\n", pri_protocol); + return linecompat[pri_protocol]; +} + +#define PRI_DCHAN_IDX(priv) ((priv)->dchan_num - 1) + +enum pri_led_state { + PRI_LED_OFF = 0x0, + PRI_LED_ON = 0x1, + /* + * We blink by software from driver, so that + * if the driver malfunction that blink would stop. + */ + // PRI_LED_BLINK_SLOW = 0x2, /* 1/2 a second blink cycle */ + // PRI_LED_BLINK_FAST = 0x3 /* 1/4 a second blink cycle */ +}; + +enum pri_led_selectors { + TE_RED_LED = 0, + TE_GREEN_LED = 1, + NT_RED_LED = 2, + NT_GREEN_LED = 3, +}; + +#define NUM_LEDS 4 + +struct pri_leds { + byte state:2; /* enum pri_led_state */ + byte led_sel:2; /* enum pri_led_selectors */ + byte reserved:4; +}; + +#define REG_FRS0 0x4C /* Framer Receive Status Register 0 */ +#define REG_FRS0_T1_FSR BIT(0) /* T1 - Frame Search Restart Flag */ +#define REG_FRS0_LMFA BIT(1) /* Loss of Multiframe Alignment */ +#define REG_FRS0_E1_NMF BIT(2) /* E1 - No Multiframe Alignment Found */ +#define REG_FRS0_RRA BIT(4) /* Receive Remote Alarm: T1-YELLOW-Alarm */ +#define REG_FRS0_LFA BIT(5) /* Loss of Frame Alignment */ +#define REG_FRS0_AIS BIT(6) /* Alarm Indication Signal: T1-BLUE-Alarm */ +#define REG_FRS0_LOS BIT(7) /* Los Of Signal: T1-RED-Alarm */ + +#define REG_FRS1 0x4D /* Framer Receive Status Register 1 */ + +#define REG_LIM0 0x36 +#define REG_LIM0_MAS BIT(0) /* Master Mode, DCO-R circuitry is frequency + synchronized to the clock supplied by SYNC */ +#define REG_LIM0_RTRS BIT(5) /* + * Receive Termination Resistance Selection: + * integrated resistor to create 75 Ohm termination (100 || 300 = 75) + * 0 = 100 Ohm + * 1 = 75 Ohm + */ +#define REG_LIM0_LL BIT(1) /* LL (Local Loopback) */ + +#define REG_FMR0 0x1C +#define REG_FMR0_E_RC0 BIT(4) /* Receive Code - LSB */ +#define REG_FMR0_E_RC1 BIT(5) /* Receive Code - MSB */ +#define REG_FMR0_E_XC0 BIT(6) /* Transmit Code - LSB */ +#define REG_FMR0_E_XC1 BIT(7) /* Transmit Code - MSB */ + +#define REG_FMR1 0x1D +#define REG_FMR1_XAIS BIT(0) /* Transmit AIS toward transmit end */ +#define REG_FMR1_SSD0 BIT(1) +#define REG_FMR1_ECM BIT(2) +#define REG_FMR1_XFS BIT(3) +#define REG_FMR1_PMOD BIT(4) /* E1 = 0, T1/J1 = 1 */ +#define REG_FMR1_EDL BIT(5) +#define REG_FMR1_AFR BIT(6) + +#define REG_FMR2 0x1E +#define REG_FMR2_E_ALMF BIT(0) /* Automatic Loss of Multiframe */ +#define REG_FMR2_T_EXZE BIT(0) /* Excessive Zeros Detection Enable */ +#define REG_FMR2_E_AXRA BIT(1) /* Automatic Transmit Remote Alarm */ +#define REG_FMR2_T_AXRA BIT(1) /* Automatic Transmit Remote Alarm */ +#define REG_FMR2_E_PLB BIT(2) /* Payload Loop-Back */ +#define REG_FMR2_E_RFS0 BIT(6) /* Receive Framing Select - LSB */ +#define REG_FMR2_E_RFS1 BIT(7) /* Receive Framing Select - MSB */ +#define REG_FMR2_T_SSP BIT(5) /* Select Synchronization/Resynchronization Procedure */ +#define REG_FMR2_T_MCSP BIT(6) /* Multiple Candidates Synchronization Procedure */ +#define REG_FMR2_T_AFRS BIT(7) /* Automatic Force Resynchronization */ + +#define REG_FMR4 0x20 +#define REG_FMR4_FM1 BIT(1) + +#define REG_XSP_E 0x21 +#define REG_FMR5_T 0x21 +#define REG_XSP_E_XSIF BIT(2) /* Transmit Spare Bit For International Use (FAS Word) */ +#define REG_FMR5_T_XTM BIT(2) /* Transmit Transparent Mode */ +#define REG_XSP_E_AXS BIT(3) /* Automatic Transmission of Submultiframe Status */ +#define REG_XSP_E_EBP BIT(4) /* E-Bit Polarity, Si-bit position of every outgoing CRC multiframe */ +#define REG_XSP_E_CASEN BIT(7) /* Channel Associated Signaling Enable */ + +#define REG_RC0 0x24 +#define REG_RC0_SJR BIT(7) /* T1 = 0, J1 = 1 */ + +#define REG_CMR1 0x44 +#define REG_CMR1_DRSS (BIT(7) | BIT(6)) +#define REG_CMR1_RS (BIT(5) | BIT(4)) +#define REG_CMR1_STF BIT(2) + +struct PRI_priv_data { + bool is_nt; + bool clock_source; + struct proc_dir_entry *pri_info; + enum pri_protocol pri_protocol; + int deflaw; + unsigned int dchan_num; + bool initialized; + bool local_loopback; + uint poll_noreplies; + uint layer1_replies; + byte reg_frs0; + byte reg_frs1; + bool layer1_up; + int alarms; + byte dchan_tx_sample; + byte dchan_rx_sample; + uint dchan_tx_counter; + uint dchan_rx_counter; + bool dchan_alive; + uint dchan_alive_ticks; + enum pri_led_state ledstate[NUM_LEDS]; +}; + +static xproto_table_t PROTO_TABLE(PRI); + +DEF_RPACKET_DATA(PRI, SET_LED, /* Set one of the LED's */ + struct pri_leds pri_leds; + ); + + +static /* 0x33 */ DECLARE_CMD(PRI, SET_LED, enum pri_led_selectors led_sel, enum pri_led_state to_led_state); + +#define DO_LED(xpd, which, tostate) \ + CALL_PROTO(PRI, SET_LED, (xpd)->xbus, (xpd), (which), (tostate)) + +/*---------------- PRI: Methods -------------------------------------------*/ + +static int query_subunit(xpd_t *xpd, byte regnum) +{ + XPD_DBG(REGS, xpd, "(%d%d): REG=0x%02X\n", + xpd->addr.unit, xpd->addr.subunit, + regnum); + return xpp_register_request( + xpd->xbus, xpd, + PRI_PORT(xpd), /* portno */ + 0, /* writing */ + regnum, + 0, /* do_subreg */ + 0, /* subreg */ + 0, /* data_L */ + 0, /* do_datah */ + 0, /* data_H */ + 0 /* should_reply */ + ); +} + + +static int write_subunit(xpd_t *xpd, byte regnum, byte val) +{ + XPD_DBG(REGS, xpd, "(%d%d): REG=0x%02X dataL=0x%02X\n", + xpd->addr.unit, xpd->addr.subunit, + regnum, val); + return xpp_register_request( + xpd->xbus, xpd, + PRI_PORT(xpd), /* portno */ + 1, /* writing */ + regnum, + 0, /* do_subreg */ + 0, /* subreg */ + val, /* data_L */ + 0, /* do_datah */ + 0, /* data_H */ + 0 /* should_reply */ + ); +} + +static int pri_write_reg(xpd_t *xpd, int regnum, byte val) +{ + XPD_DBG(REGS, xpd, "(%d%d): REG=0x%02X dataL=0x%02X\n", + xpd->addr.unit, xpd->addr.subunit, + regnum, val); + return xpp_register_request( + xpd->xbus, xpd, + PRI_PORT(xpd), /* portno */ + 1, /* writing */ + regnum, + 0, /* do_subreg */ + 0, /* subreg */ + val, /* data_L */ + 0, /* do_datah */ + 0, /* data_H */ + 0 /* should_reply */ + ); +} + +static void pri_proc_remove(xbus_t *xbus, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + XPD_DBG(PROC, xpd, "\n"); +#ifdef CONFIG_PROC_FS + if(priv->pri_info) { + XPD_DBG(PROC, xpd, "Removing xpd PRI_INFO file\n"); + remove_proc_entry(PROC_PRI_INFO_FNAME, xpd->proc_xpd_dir); + } +#endif +} + +static int pri_proc_create(xbus_t *xbus, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + XPD_DBG(PROC, xpd, "\n"); +#ifdef CONFIG_PROC_FS + XPD_DBG(PROC, xpd, "Creating PRI_INFO file\n"); + priv->pri_info = create_proc_entry(PROC_PRI_INFO_FNAME, 0644, xpd->proc_xpd_dir); + if(!priv->pri_info) { + XPD_ERR(xpd, "Failed to create proc '%s'\n", PROC_PRI_INFO_FNAME); + goto err; + } + priv->pri_info->owner = THIS_MODULE; + priv->pri_info->write_proc = proc_pri_info_write; + priv->pri_info->read_proc = proc_pri_info_read; + priv->pri_info->data = xpd; +#endif + return 0; +err: + pri_proc_remove(xbus, xpd); + return -EINVAL; +} + +static bool valid_pri_modes(const xpd_t *xpd) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + if( + priv->pri_protocol != PRI_PROTO_E1 && + priv->pri_protocol != PRI_PROTO_T1 && + priv->pri_protocol != PRI_PROTO_J1) + return 0; + return 1; +} + +/* + * Set E1/T1/J1 + * May only be called on unregistered xpd's + * (the span and channel description are set according to this) + */ +static int set_pri_proto(xpd_t *xpd, enum pri_protocol set_proto) +{ + struct PRI_priv_data *priv; + int deflaw; + unsigned int dchan_num; + byte fmr1 = + REG_FMR1_AFR | + REG_FMR1_XFS | + REG_FMR1_ECM; + int default_lineconfig = 0; + byte rc0 = 0; /* FIXME: PCM offsets */ + int ret; + + BUG_ON(!xpd); + priv = xpd->priv; + if(SPAN_REGISTERED(xpd)) { + XPD_NOTICE(xpd, "Registered as span %d. Cannot do setup pri protocol (%s)\n", + xpd->span.spanno, __FUNCTION__); + return -EBUSY; + } + switch(set_proto) { + case PRI_PROTO_E1: + deflaw = ZT_LAW_ALAW; + dchan_num = 16; + default_lineconfig = ZT_CONFIG_CRC4 | ZT_CONFIG_HDB3; + break; + case PRI_PROTO_T1: + deflaw = ZT_LAW_MULAW; + dchan_num = 24; + default_lineconfig = ZT_CONFIG_ESF | ZT_CONFIG_B8ZS; + fmr1 |= REG_FMR1_PMOD; + break; + case PRI_PROTO_J1: + /* + * Check all assumptions + */ + deflaw = ZT_LAW_MULAW; + dchan_num = 24; + fmr1 |= REG_FMR1_PMOD; + rc0 |= REG_RC0_SJR; + default_lineconfig = 0; /* FIXME: J1??? */ + XPD_NOTICE(xpd, "J1 is not supported yet\n"); + return -ENOSYS; + default: + XPD_ERR(xpd, "%s: Unknown pri protocol = %d\n", + __FUNCTION__, set_proto); + return -EINVAL; + } + priv->pri_protocol = set_proto; + xpd->channels = pri_num_channels(set_proto); + xpd->pcm_len = RPACKET_HEADERSIZE + sizeof(xpp_line_t) + xpd->channels * ZT_CHUNKSIZE; + xpd->wanted_pcm_mask = BITMASK(xpd->channels); + priv->deflaw = deflaw; + priv->dchan_num = dchan_num; + xpd->type_name = type_name(priv->pri_protocol, priv->is_nt); + XPD_DBG(GENERAL, xpd, "%s, channels=%d, dchan_num=%d, deflaw=%d\n", + pri_protocol_name(set_proto), + xpd->channels, + priv->dchan_num, + priv->deflaw + ); + write_subunit(xpd, REG_FMR1, fmr1); +#ifdef JAPANEZE_SUPPORT + if(rc0) + write_subunit(xpd, REG_RC0, rc0); +#endif + /* + * Must set default now, so layer1 polling (Register REG_FRS0) would + * give reliable results. + */ + ret = pri_lineconfig(xpd, default_lineconfig); + if(ret) { + XPD_NOTICE(xpd, "Failed setting PRI default line config\n"); + return ret; + } + return 0; +} + +static void zap_update_syncsrc(xpd_t *xpd) +{ + struct PRI_priv_data *priv; + xpd_t *subxpd; + int best_spanno = 0; + int i; + + if(!SPAN_REGISTERED(xpd)) + return; + for(i = 0; i < MAX_SLAVES; i++) { + subxpd = xpd_byaddr(xpd->xbus, xpd->addr.unit, i); + if(!subxpd) + continue; + priv = subxpd->priv; + if(priv->clock_source) { + if(best_spanno) + XPD_ERR(xpd, "Duplicate XPD's with clock_source=1\n"); + best_spanno = subxpd->span.spanno; + } + } + for(i = 0; i < MAX_SLAVES; i++) { + subxpd = xpd_byaddr(xpd->xbus, xpd->addr.unit, i); + if(!subxpd) + continue; + if(subxpd->span.syncsrc == best_spanno) + XPD_DBG(SYNC, xpd, "Setting SyncSource to span %d\n", best_spanno); + else + XPD_DBG(SYNC, xpd, "Slaving to span %d\n", best_spanno); + subxpd->span.syncsrc = best_spanno; + } +} + +/* + * Called from: + * - set_master_mode() -- + * As a result of ztcfg or writing to /proc/xpp/XBUS-??/XPD-/??/pri_info + * - layer1_state() -- + * As a result of an alarm. + */ +static void set_clocking(xpd_t *xpd) +{ + xbus_t *xbus; + xpd_t *best_xpd = NULL; + int best_subunit = -1; /* invalid */ + int best_subunit_prio = 0; + int i; + + xbus = get_xbus(xpd->xbus->num); + /* Find subunit with best timing priority */ + for(i = 0; i < MAX_SLAVES; i++) { + struct PRI_priv_data *priv; + xpd_t *subxpd; + + subxpd = xpd_byaddr(xbus, xpd->addr.unit, i); + if(!subxpd) + continue; + priv = subxpd->priv; + if(priv->alarms != 0) + continue; + if(subxpd->timing_priority > best_subunit_prio) { + best_xpd = subxpd; + best_subunit = i; + best_subunit_prio = subxpd->timing_priority; + } + } + /* Now set it */ + if(best_xpd && ((struct PRI_priv_data *)(best_xpd->priv))->clock_source == 0) { + byte cmr1_val = + REG_CMR1_RS | + REG_CMR1_STF | + (REG_CMR1_DRSS & (best_subunit << 6)); + XPD_DBG(SYNC, best_xpd, + "ClockSource Set: cmr1=0x%02X\n", cmr1_val); + pri_write_reg(xpd, REG_CMR1, cmr1_val); + ((struct PRI_priv_data *)(best_xpd->priv))->clock_source = 1; + } + /* clear old clock sources */ + for(i = 0; i < MAX_SLAVES; i++) { + struct PRI_priv_data *priv; + xpd_t *subxpd; + + subxpd = xpd_byaddr(xbus, xpd->addr.unit, i); + if(subxpd && subxpd != best_xpd) { + XPD_DBG(SYNC, subxpd, "Clearing clock source\n"); + priv = subxpd->priv; + priv->clock_source = 0; + } + } + zap_update_syncsrc(xpd); + put_xbus(xbus); +} + +/* + * Normally set by the timing parameter in zaptel.conf + * If this is called by ztcfg, than it's too late to change + * zaptel sync priority (we are already registered) + * There are two workarounds to mitigate this problem: + * 1. So we set *our* sync master at least. + * 2. And we try to call it with a sane default from set_nt() + * which is called before zaptel registration. + */ +static int set_master_mode(const char *msg, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + byte lim0 = 0; + byte xsp = 0; + bool is_master_mode = xpd->timing_priority == 0; + + BUG_ON(!xpd); + priv = xpd->priv; + lim0 |= (priv->local_loopback) ? REG_LIM0_LL : 0; + if(is_master_mode) + lim0 |= REG_LIM0_MAS; + else + lim0 &= ~REG_LIM0_MAS; + if(priv->pri_protocol == PRI_PROTO_E1) + { + lim0 &= ~REG_LIM0_RTRS; /* Receive termination: Integrated resistor is switched off (100 Ohm, no internal 300 Ohm) */; + xsp |= REG_XSP_E_EBP | REG_XSP_E_AXS | REG_XSP_E_XSIF; + } else if(priv->pri_protocol == PRI_PROTO_T1) { + lim0 |= REG_LIM0_RTRS; /* Receive termination: Integrated resistor is switched on (100 Ohm || 300 Ohm = 75 Ohm) */ + xsp |= REG_FMR5_T_XTM; + } + XPD_DBG(SIGNAL, xpd, "%s(%s): %s\n", __FUNCTION__, msg, (is_master_mode) ? "MASTER" : "SLAVE"); + write_subunit(xpd, REG_LIM0 , lim0); + write_subunit(xpd, REG_XSP_E, xsp); + set_clocking(xpd); + return 0; +} + +static int set_nt(const char *msg, xpd_t *xpd, bool is_nt) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + if(SPAN_REGISTERED(xpd)) { + XPD_NOTICE(xpd, "Registered as span %d. Cannot do %s(%s)\n", + xpd->span.spanno, __FUNCTION__, msg); + return -EBUSY; + } + priv->is_nt = is_nt; + xpd->type_name = type_name(priv->pri_protocol, is_nt); + xpd->direction = (is_nt) ? TO_PHONE : TO_PSTN; + XPD_DBG(SIGNAL, xpd, "%s(%s): %s %s\n", __FUNCTION__, msg, xpd->type_name, (is_nt) ? "NT" : "TE"); + if(xpd->timing_priority == 0 && !is_nt) /* by default set timing priority from NT/TE */ + xpd->timing_priority = 1; + set_master_mode(msg, xpd); + return 0; +} + +static int set_localloop(const char *msg, xpd_t *xpd, bool localloop) +{ + struct PRI_priv_data *priv; + byte lim0 = 0; + byte xsp = 0; + + BUG_ON(!xpd); + priv = xpd->priv; + if(SPAN_REGISTERED(xpd)) { + XPD_NOTICE(xpd, "Registered as span %d. Cannot do %s(%s)\n", + xpd->span.spanno, __FUNCTION__, msg); + return -EBUSY; + } + lim0 |= (localloop) ? REG_LIM0_LL : 0; + if(priv->is_nt) + lim0 |= REG_LIM0_MAS; + else + lim0 &= ~REG_LIM0_MAS; + if(priv->pri_protocol == PRI_PROTO_E1) + { + lim0 |= REG_LIM0_RTRS; /* Receive termination: Integrated resistor is switched on (100 Ohm || 300 Ohm = 75 Ohm) */ + xsp |= REG_XSP_E_EBP | REG_XSP_E_AXS | REG_XSP_E_XSIF; + } else if(priv->pri_protocol == PRI_PROTO_T1) { + lim0 &= ~REG_LIM0_RTRS ; /* Receive termination: Integrated resistor is switched off (100 Ohm, no internal 300 Ohm) */; + xsp |= REG_FMR5_T_XTM; + } + priv->local_loopback = localloop; + XPD_DBG(SIGNAL, xpd, "%s(%s): %s\n", __FUNCTION__, msg, (localloop) ? "LOCALLOOP" : "NO"); + write_subunit(xpd, REG_LIM0 , lim0); + write_subunit(xpd, REG_XSP_E, xsp); + return 0; +} + +#define VALID_CONFIG(bit,flg,str) [bit] = { .flags = flg, .name = str } + +static const struct { + const char *name; + const int flags; +} valid_spanconfigs[sizeof(unsigned int)*8] = { + /* These apply to T1 */ +// VALID_CONFIG(4, ZT_CONFIG_D4, "D4"), FIXME: should support + VALID_CONFIG(5, ZT_CONFIG_ESF, "ESF"), + VALID_CONFIG(6, ZT_CONFIG_AMI, "AMI"), + VALID_CONFIG(7, ZT_CONFIG_B8ZS, "B8ZS"), + /* These apply to E1 */ + VALID_CONFIG(8, ZT_CONFIG_CCS, "CCS"), + VALID_CONFIG(9, ZT_CONFIG_HDB3, "HDB3"), + VALID_CONFIG(10, ZT_CONFIG_CRC4, "CRC4"), +}; + +static int pri_lineconfig(xpd_t *xpd, int lineconfig) +{ + struct PRI_priv_data *priv; + const char *framingstr = ""; + const char *codingstr = ""; + const char *crcstr = ""; + byte fmr0 = 0; /* Dummy initilizations to */ + byte fmr2 = 0; /* silense false gcc warnings */ + byte fmr4 = 0; /* Dummy initilizations to */ + unsigned int bad_bits; + int i; + + BUG_ON(!xpd); + priv = xpd->priv; + /* + * validate + */ + bad_bits = lineconfig & pri_linecompat(priv->pri_protocol); + bad_bits = bad_bits ^ lineconfig; + for(i = 0; i < ARRAY_SIZE(valid_spanconfigs); i++) { + unsigned int flags = valid_spanconfigs[i].flags; + + if(bad_bits & BIT(i)) { + if(flags) { + XPD_ERR(xpd, + "Bad config item '%s' for %s. Ignore\n", + valid_spanconfigs[i].name, + pri_protocol_name(priv->pri_protocol)); + } else { + /* we got real garbage */ + XPD_ERR(xpd, + "Unknown config item 0x%lX for %s. Ignore\n", + BIT(i), + pri_protocol_name(priv->pri_protocol)); + } + } + if(flags && flags != BIT(i)) { + ERR("%s: BUG: i=%d flags=0x%X\n", + __FUNCTION__, i, flags); + // BUG(); + } + } + if(bad_bits) + goto bad_lineconfig; + if(priv->pri_protocol == PRI_PROTO_E1) { + fmr2 = REG_FMR2_E_AXRA | REG_FMR2_E_ALMF; /* 0x03 */ + fmr4 = 0x9F; /* E1.XSW: All spare bits = 1*/ + } else if(priv->pri_protocol == PRI_PROTO_T1) { + fmr2 = REG_FMR2_T_SSP | REG_FMR2_T_AXRA; /* 0x22 */ + fmr4 = 0x0C; + } else if(priv->pri_protocol == PRI_PROTO_J1) { + fmr4 = 0x1C; + XPD_ERR(xpd, "J1 unsupported yet\n"); + return -ENOSYS; + } + if(priv->local_loopback) + fmr2 |= REG_FMR2_E_PLB; + /* framing first */ + if (lineconfig & ZT_CONFIG_B8ZS) { + framingstr = "B8ZS"; + fmr0 = REG_FMR0_E_XC1 | REG_FMR0_E_XC0 | REG_FMR0_E_RC1 | REG_FMR0_E_RC0; + } else if (lineconfig & ZT_CONFIG_AMI) { + framingstr = "AMI"; + fmr0 = REG_FMR0_E_XC1 | REG_FMR0_E_RC1; + } else if (lineconfig & ZT_CONFIG_HDB3) { + framingstr = "HDB3"; + fmr0 = REG_FMR0_E_XC1 | REG_FMR0_E_XC0 | REG_FMR0_E_RC1 | REG_FMR0_E_RC0; + } + /* then coding */ + if (lineconfig & ZT_CONFIG_ESF) { + codingstr = "ESF"; + fmr4 |= REG_FMR4_FM1; + fmr2 |= REG_FMR2_T_AXRA | REG_FMR2_T_MCSP | REG_FMR2_T_SSP; + } else if (lineconfig & ZT_CONFIG_D4) { + codingstr = "D4"; + } else if (lineconfig & ZT_CONFIG_CCS) { + codingstr = "CCS"; + /* do nothing */ + } + /* E1's can enable CRC checking */ + if (lineconfig & ZT_CONFIG_CRC4) { + crcstr = "CRC4"; + fmr2 |= REG_FMR2_E_RFS1; + } + XPD_DBG(GENERAL, xpd, "[%s] lineconfig=%s/%s/%s %s (0x%X)\n", + (priv->is_nt)?"NT":"TE", + framingstr, codingstr, crcstr, + (lineconfig & ZT_CONFIG_NOTOPEN)?"YELLOW":"", + lineconfig); + if(fmr0 != 0) { + XPD_DBG(GENERAL, xpd, "%s: fmr0(0x%02X) = 0x%02X\n", __FUNCTION__, REG_FMR0, fmr0); + write_subunit(xpd, REG_FMR0, fmr0); + } + XPD_DBG(GENERAL, xpd, "%s: fmr4(0x%02X) = 0x%02X\n", __FUNCTION__, REG_FMR4, fmr4); + write_subunit(xpd, REG_FMR4, fmr4); + XPD_DBG(GENERAL, xpd, "%s: fmr2(0x%02X) = 0x%02X\n", __FUNCTION__, REG_FMR2, fmr2); + write_subunit(xpd, REG_FMR2, fmr2); + return 0; +bad_lineconfig: + XPD_ERR(xpd, "Bad lineconfig. Abort\n"); + return -EINVAL; +} + +/* + * Called only for 'span' keyword in /etc/zaptel.conf + */ + +static int pri_spanconfig(struct zt_span *span, struct zt_lineconfig *lc) +{ + xpd_t *xpd = span->pvt; + struct PRI_priv_data *priv; + int ret; + + BUG_ON(!xpd); + priv = xpd->priv; + if(lc->span != xpd->span.spanno) { + XPD_ERR(xpd, "I am span %d but got spanconfig for span %d\n", + xpd->span.spanno, lc->span); + return -EINVAL; + } + /* + * FIXME: lc->name is unused by ztcfg and zaptel... + * We currently ignore it also. + */ + XPD_DBG(GENERAL, xpd, "[%s] lbo=%d lineconfig=0x%X sync=%d\n", + (priv->is_nt)?"NT":"TE", lc->lbo, lc->lineconfig, lc->sync); + ret = pri_lineconfig(xpd, lc->lineconfig); + if(!ret) { + span->lineconfig = lc->lineconfig; + xpd->timing_priority = lc->sync; + set_master_mode("spanconfig", xpd); + elect_syncer("PRI-master_mode"); + } + return ret; +} + +/* + * Set signalling type (if appropriate) + * Called from zaptel with spinlock held on chan. Must not call back + * zaptel functions. + */ +static int pri_chanconfig(struct zt_chan *chan, int sigtype) +{ + DBG(GENERAL, "channel %d (%s) -> %s\n", chan->channo, chan->name, sig2str(sigtype)); + // FIXME: sanity checks: + // - should be supported (within the sigcap) + // - should not replace fxs <->fxo ??? (covered by previous?) + return 0; +} + +static xpd_t *PRI_card_new(xbus_t *xbus, int unit, int subunit, const xproto_table_t *proto_table, byte subtype, int subunits, bool to_phone) +{ + xpd_t *xpd = NULL; + struct PRI_priv_data *priv; + int channels = min(31, CHANNELS_PERXPD); /* worst case */ + int ret = 0; + + XBUS_DBG(GENERAL, xbus, "\n"); + xpd = xpd_alloc(sizeof(struct PRI_priv_data), proto_table, channels); + if(!xpd) + return NULL; + priv = xpd->priv; + priv->pri_protocol = PRI_PROTO_0; /* Default, changes in set_pri_proto() */ + priv->deflaw = ZT_LAW_DEFAULT; /* Default, changes in set_pri_proto() */ + xpd->type_name = + type_name(priv->pri_protocol, 0); /* Default, changes in set_nt() */ + if(xpd_common_init(xbus, xpd, unit, subunit, subtype, subunits) < 0) + goto err; + if(pri_proc_create(xbus, xpd) < 0) + goto err; + /* Assume E1, changes later from user space */ + ret = set_pri_proto(xpd, PRI_PROTO_E1); + if(ret < 0) + goto err; + return xpd; +err: + xpd_free(xpd); + return NULL; +} + +static int PRI_card_init(xbus_t *xbus, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + int ret = 0; + xproto_table_t *proto_table; + + BUG_ON(!xpd); + XPD_DBG(GENERAL, xpd, "\n"); + xpd->type = XPD_TYPE_PRI; + proto_table = &PROTO_TABLE(PRI); + priv = xpd->priv; + /* + * initialization script should have set correct + * operating modes. + */ + if(!valid_pri_modes(xpd)) { + XPD_NOTICE(xpd, "PRI protocol not set\n"); + goto err; + } + for(ret = 0; ret < NUM_LEDS; ret++) { + DO_LED(xpd, ret, PRI_LED_ON); + msleep(20); + DO_LED(xpd, ret, PRI_LED_OFF); + } + priv->initialized = 1; + return 0; +err: + pri_proc_remove(xbus, xpd); + XPD_ERR(xpd, "Failed initializing registers (%d)\n", ret); + return ret; +} + +static int PRI_card_remove(xbus_t *xbus, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + XPD_DBG(GENERAL, xpd, "\n"); + pri_proc_remove(xbus, xpd); + return 0; +} + +static int PRI_card_zaptel_preregistration(xpd_t *xpd, bool on) +{ + xbus_t *xbus; + struct PRI_priv_data *priv; + int i; + + BUG_ON(!xpd); + xbus = xpd->xbus; + priv = xpd->priv; + BUG_ON(!xbus); + XPD_DBG(GENERAL, xpd, "%s (proto=%s, channels=%d, deflaw=%d)\n", + (on)?"on":"off", + pri_protocol_name(priv->pri_protocol), + xpd->channels, + priv->deflaw); + if(!on) { + /* Nothing to do yet */ + return 0; + } +#ifdef ZT_SPANSTAT_V2 + xpd->span.spantype = pri_protocol_name(priv->pri_protocol); +#endif + xpd->span.linecompat = pri_linecompat(priv->pri_protocol); + xpd->span.deflaw = priv->deflaw; + for_each_line(xpd, i) { + struct zt_chan *cur_chan = &xpd->chans[i]; + bool is_dchan = i == PRI_DCHAN_IDX(priv); + + XPD_DBG(GENERAL, xpd, "setting PRI channel %d (%s)\n", i, + (is_dchan)?"DCHAN":"CLEAR"); + snprintf(cur_chan->name, MAX_CHANNAME, "XPP_%s/%02d/%1d%1d/%d", + xpd->type_name, xbus->num, xpd->addr.unit, xpd->addr.subunit, i); + cur_chan->chanpos = i + 1; + cur_chan->pvt = xpd; + if(is_dchan) { /* D-CHAN */ + cur_chan->sigcap = PRI_DCHAN_SIGCAP; + //FIXME: cur_chan->flags |= ZT_FLAG_PRIDCHAN; + cur_chan->flags &= ~ZT_FLAG_HDLC; + } else + cur_chan->sigcap = PRI_BCHAN_SIGCAP; + } + xpd->offhook = xpd->wanted_pcm_mask; + xpd->span.spanconfig = pri_spanconfig; + xpd->span.chanconfig = pri_chanconfig; + xpd->span.startup = pri_startup; + xpd->span.shutdown = pri_shutdown; + return 0; +} + +static int PRI_card_zaptel_postregistration(xpd_t *xpd, bool on) +{ + xbus_t *xbus; + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + xbus = xpd->xbus; + priv = xpd->priv; + BUG_ON(!xbus); + XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off"); + zap_update_syncsrc(xpd); + return(0); +} + +static int PRI_card_hooksig(xbus_t *xbus, xpd_t *xpd, int pos, zt_txsig_t txsig) +{ + LINE_DBG(SIGNAL, xpd, pos, "%s\n", txsig2str(txsig)); + return 0; +} + +static void dchan_state(xpd_t *xpd, bool up) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(priv->dchan_alive == up) + return; + if(!priv->layer1_up) /* No layer1, kill dchan */ + up = 0; + if(up) { + XPD_DBG(SIGNAL, xpd, "STATE CHANGE: D-Channel RUNNING\n"); + priv->dchan_alive = 1; + } else { + int d = PRI_DCHAN_IDX(priv); + + if(SPAN_REGISTERED(xpd) && d >= 0 && d < xpd->channels) { + byte *pcm; + + pcm = (byte *)xpd->span.chans[d].readchunk; + pcm[0] = 0x00; + pcm = (byte *)xpd->span.chans[d].writechunk; + pcm[0] = 0x00; + } + XPD_DBG(SIGNAL, xpd, "STATE CHANGE: D-Channel STOPPED\n"); + priv->dchan_rx_counter = priv->dchan_tx_counter = 0; + priv->dchan_alive = 0; + priv->dchan_alive_ticks = 0; + priv->dchan_rx_sample = priv->dchan_tx_sample = 0x00; + } +} + +/* + * LED managment is done by the driver now: + * - Turn constant ON RED/GREEN led to indicate NT/TE port + * - Very fast "Double Blink" to indicate Layer1 alive (without D-Channel) + * - Constant blink (1/2 sec cycle) to indicate D-Channel alive. + */ +static void handle_leds(xbus_t *xbus, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + unsigned int timer_count; + int which_led; + int other_led; + enum pri_led_state ledstate; + int mod; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(priv->is_nt) { + which_led = NT_RED_LED; + other_led = TE_GREEN_LED; + } else { + which_led = TE_GREEN_LED; + other_led = NT_RED_LED; + } + ledstate = priv->ledstate[which_led]; + timer_count = xpd->timer_count; + if(xpd->blink_mode) { + if((timer_count % DEFAULT_LED_PERIOD) == 0) { + // led state is toggled + if(ledstate == PRI_LED_OFF) { + DO_LED(xpd, which_led, PRI_LED_ON); + DO_LED(xpd, other_led, PRI_LED_ON); + } else { + DO_LED(xpd, which_led, PRI_LED_OFF); + DO_LED(xpd, other_led, PRI_LED_OFF); + } + } + return; + } + if(priv->ledstate[other_led] != PRI_LED_OFF) + DO_LED(xpd, other_led, PRI_LED_OFF); + if(priv->dchan_alive) { + mod = timer_count % 1000; + switch(mod) { + case 0: + DO_LED(xpd, which_led, PRI_LED_ON); + break; + case 500: + DO_LED(xpd, which_led, PRI_LED_OFF); + break; + } + } else if(priv->layer1_up) { + mod = timer_count % 1000; + switch(mod) { + case 0: + case 100: + DO_LED(xpd, which_led, PRI_LED_ON); + break; + case 50: + case 150: + DO_LED(xpd, which_led, PRI_LED_OFF); + break; + } + } else { + if(priv->ledstate[which_led] != PRI_LED_ON) + DO_LED(xpd, which_led, PRI_LED_ON); + } +} + +static int PRI_card_tick(xbus_t *xbus, xpd_t *xpd) +{ + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(!priv->initialized || !xbus->self_ticking) + return 0; + /* + * Poll layer1 status (cascade subunits) + */ + if(poll_interval != 0 && + ((xpd->timer_count % poll_interval) == 0)) { + priv->poll_noreplies++; + query_subunit(xpd, REG_FRS0); + //query_subunit(xpd, REG_FRS1); + } + if(priv->dchan_tx_counter >= 1 && priv->dchan_rx_counter > 1) { + dchan_state(xpd, 1); + priv->dchan_alive_ticks++; + } + handle_leds(xbus, xpd); + return 0; +} + +static int PRI_card_ioctl(xpd_t *xpd, int pos, unsigned int cmd, unsigned long arg) +{ + BUG_ON(!xpd); + if(!TRANSPORT_RUNNING(xpd->xbus)) + return -ENODEV; + switch (cmd) { + case ZT_TONEDETECT: + /* + * Asterisk call all span types with this (FXS specific) + * call. Silently ignore it. + */ + LINE_DBG(SIGNAL, xpd, pos, "PRI: Starting a call\n"); + return -ENOTTY; + default: + report_bad_ioctl(THIS_MODULE->name, xpd, pos, cmd); + return -ENOTTY; + } + return 0; +} + +static int PRI_card_close(xpd_t *xpd, lineno_t pos) +{ + //struct zt_chan *chan = &xpd->span.chans[pos]; + dchan_state(xpd, 0); + return 0; +} + +/* + * Called only for 'span' keyword in /etc/zaptel.conf + */ +static int pri_startup(struct zt_span *span) +{ + xpd_t *xpd = span->pvt; + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(!TRANSPORT_RUNNING(xpd->xbus)) { + XPD_DBG(GENERAL, xpd, "Startup called by zaptel. No Hardware. Ignored\n"); + return -ENODEV; + } + XPD_DBG(GENERAL, xpd, "STARTUP\n"); + // Turn on all channels + CALL_XMETHOD(XPD_STATE, xpd->xbus, xpd, 1); + return 0; +} + +/* + * Called only for 'span' keyword in /etc/zaptel.conf + */ +static int pri_shutdown(struct zt_span *span) +{ + xpd_t *xpd = span->pvt; + struct PRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(!TRANSPORT_RUNNING(xpd->xbus)) { + XPD_DBG(GENERAL, xpd, "Shutdown called by zaptel. No Hardware. Ignored\n"); + return -ENODEV; + } + XPD_DBG(GENERAL, xpd, "SHUTDOWN\n"); + // Turn off all channels + CALL_XMETHOD(XPD_STATE, xpd->xbus, xpd, 0); + return 0; +} + +/*! Copy PCM chunks from the buffers of the xpd to a new packet + * \param xbus xbus of source xpd. + * \param xpd source xpd. + * \param lines a bitmask of the active channels that need to be copied. + * \param pack packet to be filled. + * + * On PRI this function is should also shift the lines mask one bit, as + * channel 0 on the wire is an internal chip control channel. We only + * send 31 channels to the device, but they should be called 1-31 rather + * than 0-30 . + */ +static void PRI_card_pcm_fromspan(xbus_t *xbus, xpd_t *xpd, xpp_line_t lines, xpacket_t *pack) +{ + struct PRI_priv_data *priv; + byte *pcm; + struct zt_chan *chans; + unsigned long flags; + int i; + int physical_chan; + int physical_mask = 0; + + BUG_ON(!xbus); + BUG_ON(!xpd); + BUG_ON(!pack); + priv = xpd->priv; + BUG_ON(!priv); + pcm = RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, pcm); + spin_lock_irqsave(&xpd->lock, flags); + chans = xpd->span.chans; + physical_chan = 0; + for_each_line(xpd, i) { + if(priv->pri_protocol == PRI_PROTO_E1) { + /* In E1 - Only 0'th channel is unused */ + if(i == 0) { + physical_chan++; + } + } else if(priv->pri_protocol == PRI_PROTO_T1) { + /* In T1 - Every 4'th channel is unused */ + if((i % 3) == 0) { + physical_chan++; + } + } + if(IS_SET(lines, i)) { + physical_mask |= BIT(physical_chan); + if(SPAN_REGISTERED(xpd)) { + if(i == PRI_DCHAN_IDX(priv)) { + if(priv->dchan_tx_sample != chans[i].writechunk[0]) { + priv->dchan_tx_sample = chans[i].writechunk[0]; + priv->dchan_tx_counter++; + } else if(chans[i].writechunk[0] == 0xFF) + dchan_state(xpd, 0); + } +#ifdef DEBUG_PCMTX + if(pcmtx >= 0 && pcmtx_chan == i) + memset((u_char *)pcm, pcmtx, ZT_CHUNKSIZE); + else +#endif + memcpy((u_char *)pcm, chans[i].writechunk, ZT_CHUNKSIZE); + // fill_beep((u_char *)pcm, xpd->addr.subunit, 2); + } else + memset((u_char *)pcm, 0x7F, ZT_CHUNKSIZE); + pcm += ZT_CHUNKSIZE; + } + physical_chan++; + } + RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, lines) = physical_mask; + XPD_COUNTER(xpd, PCM_WRITE)++; + spin_unlock_irqrestore(&xpd->lock, flags); +} + +/*! Copy PCM chunks from the packet we recieved to the xpd struct. + * \param xbus xbus of target xpd. + * \param xpd target xpd. + * \param pack Source packet. + * + * On PRI this function is should also shift the lines back mask one bit, as + * channel 0 on the wire is an internal chip control channel. + * + * \see PRI_card_pcm_fromspan + */ +static void PRI_card_pcm_tospan(xbus_t *xbus, xpd_t *xpd, xpacket_t *pack) +{ + struct PRI_priv_data *priv; + byte *pcm; + struct zt_chan *chans; + xpp_line_t physical_mask; + unsigned long flags; + int i; + int logical_chan; + + if(!SPAN_REGISTERED(xpd)) + return; + priv = xpd->priv; + BUG_ON(!priv); + pcm = RPACKET_FIELD(pack, GLOBAL, PCM_READ, pcm); + physical_mask = RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, lines); + spin_lock_irqsave(&xpd->lock, flags); + chans = xpd->span.chans; + logical_chan = 0; + for (i = 0; i < CHANNELS_PERXPD; i++) { + volatile u_char *r; + + if(priv->pri_protocol == PRI_PROTO_E1) { + /* In E1 - Only 0'th channel is unused */ + if(i == 0) + continue; + } else if(priv->pri_protocol == PRI_PROTO_T1) { + /* In T1 - Every 4'th channel is unused */ + if((i % 4) == 0) + continue; + } + if(logical_chan == PRI_DCHAN_IDX(priv)) { + if(priv->dchan_rx_sample != pcm[0]) { + if(debug & DBG_PCM) { + XPD_INFO(xpd, "RX-D-Chan: prev=0x%X now=0x%X\n", + priv->dchan_rx_sample, pcm[0]); + dump_packet("RX-D-Chan", pack, 1); + } + priv->dchan_rx_sample = pcm[0]; + priv->dchan_rx_counter++; + } else if(pcm[0] == 0xFF) + dchan_state(xpd, 0); + } + if(IS_SET(physical_mask, i)) { + r = chans[logical_chan].readchunk; + // memset((u_char *)r, 0x5A, ZT_CHUNKSIZE); // DEBUG + // fill_beep((u_char *)r, 1, 1); // DEBUG: BEEP + memcpy((u_char *)r, pcm, ZT_CHUNKSIZE); + pcm += ZT_CHUNKSIZE; + } + logical_chan++; + } + XPD_COUNTER(xpd, PCM_READ)++; + spin_unlock_irqrestore(&xpd->lock, flags); +} + +/*---------------- PRI: HOST COMMANDS -------------------------------------*/ + +static /* 0x0F */ HOSTCMD(PRI, XPD_STATE, bool on) +{ + BUG_ON(!xpd); + XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off"); + return 0; +} + +static /* 0x33 */ HOSTCMD(PRI, SET_LED, enum pri_led_selectors led_sel, enum pri_led_state to_led_state) +{ + int ret = 0; + xframe_t *xframe; + xpacket_t *pack; + struct pri_leds *pri_leds; + struct PRI_priv_data *priv; + + BUG_ON(!xbus); + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + XPD_DBG(LEDS, xpd, "led_sel=%d to_state=%d\n", led_sel, to_led_state); + XFRAME_NEW_CMD(xframe, pack, xbus, PRI, SET_LED, xpd->xbus_idx); + pri_leds = &RPACKET_FIELD(pack, PRI, SET_LED, pri_leds); + pri_leds->state = to_led_state; + pri_leds->led_sel = led_sel; + pri_leds->reserved = 0; + XPACKET_LEN(pack) = RPACKET_SIZE(PRI, SET_LED); + ret = send_cmd_frame(xbus, xframe); + priv->ledstate[led_sel] = to_led_state; + return ret; +} + +/*---------------- PRI: Astribank Reply Handlers --------------------------*/ +static void layer1_state(xpd_t *xpd, byte data_low) +{ + struct PRI_priv_data *priv; + int alarms = 0; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + priv->poll_noreplies = 0; + if(data_low & REG_FRS0_LOS) + alarms |= ZT_ALARM_RED; + if(data_low & REG_FRS0_AIS) + alarms |= ZT_ALARM_BLUE; + if(data_low & REG_FRS0_RRA) + alarms |= ZT_ALARM_YELLOW; + priv->layer1_up = alarms == 0; +#if 0 + /* + * Some bad bits (e.g: LMFA and NMF have no alarm "colors" + * associated. However, layer1 is still not working if they are set. + * FIXME: These behave differently in E1/T1, so ignore them for while. + */ + if(data_low & (REG_FRS0_LMFA | REG_FRS0_E1_NMF)) + priv->layer1_up = 0; +#endif + priv->alarms = alarms; + if(!priv->layer1_up) + dchan_state(xpd, 0); + if(SPAN_REGISTERED(xpd) && xpd->span.alarms != alarms) { + char str1[MAX_PROC_WRITE]; + char str2[MAX_PROC_WRITE]; + + alarm2str(xpd->span.alarms, str1, sizeof(str1)); + alarm2str(alarms, str2, sizeof(str2)); + XPD_NOTICE(xpd, "Alarms: 0x%X (%s) => 0x%X (%s)\n", + xpd->span.alarms, str1, + alarms, str2); + xpd->span.alarms = alarms; + zt_alarm_notify(&xpd->span); + set_clocking(xpd); + } + priv->reg_frs0 = data_low; + priv->layer1_replies++; + XPD_DBG(REGS, xpd, "subunit=%d data_low=0x%02X\n", xpd->addr.subunit, data_low); +} + +static int PRI_card_register_reply(xbus_t *xbus, xpd_t *xpd, reg_cmd_t *info) +{ + unsigned long flags; + struct PRI_priv_data *priv; + struct xpd_addr addr; + xpd_t *orig_xpd; + + /* Map UNIT + PORTNUM to XPD */ + orig_xpd = xpd; + addr.unit = orig_xpd->addr.unit; + addr.subunit = info->portnum; + xpd = xpd_byaddr(xbus, addr.unit, addr.subunit); + if(!xpd) { + static int rate_limit; + + if((rate_limit++ % 1003) < 5) + notify_bad_xpd(__FUNCTION__, xbus, addr , orig_xpd->xpdname); + return -EPROTO; + } + spin_lock_irqsave(&xpd->lock, flags); + priv = xpd->priv; + BUG_ON(!priv); + if(info->is_multibyte) { + XPD_NOTICE(xpd, "Got Multibyte: %d bytes, eoframe: %d\n", + info->bytes, info->eoframe); + goto end; + } + if(REG_FIELD(info, regnum) == REG_FRS0 && !REG_FIELD(info, do_subreg)) + layer1_state(xpd, REG_FIELD(info, data_low)); + if(REG_FIELD(info, regnum) == REG_FRS1 && !REG_FIELD(info, do_subreg)) + priv->reg_frs1 = REG_FIELD(info, data_low); + /* Update /proc info only if reply relate to the last slic read request */ + if( + REG_FIELD(&xpd->requested_reply, regnum) == REG_FIELD(info, regnum) && + REG_FIELD(&xpd->requested_reply, do_subreg) == REG_FIELD(info, do_subreg) && + REG_FIELD(&xpd->requested_reply, subreg) == REG_FIELD(info, subreg)) { + xpd->last_reply = *info; + } + +end: + spin_unlock_irqrestore(&xpd->lock, flags); + return 0; +} + +static xproto_table_t PROTO_TABLE(PRI) = { + .owner = THIS_MODULE, + .entries = { + /* Table Card Opcode */ + }, + .name = "PRI", /* protocol name */ + .ports_per_subunit = 1, + .type = XPD_TYPE_PRI, + .xops = { + .card_new = PRI_card_new, + .card_init = PRI_card_init, + .card_remove = PRI_card_remove, + .card_zaptel_preregistration = PRI_card_zaptel_preregistration, + .card_zaptel_postregistration = PRI_card_zaptel_postregistration, + .card_hooksig = PRI_card_hooksig, + .card_tick = PRI_card_tick, + .card_pcm_fromspan = PRI_card_pcm_fromspan, + .card_pcm_tospan = PRI_card_pcm_tospan, + .card_ioctl = PRI_card_ioctl, + .card_close = PRI_card_close, + .card_register_reply = PRI_card_register_reply, + + .XPD_STATE = XPROTO_CALLER(PRI, XPD_STATE), + }, + .packet_is_valid = pri_packet_is_valid, + .packet_dump = pri_packet_dump, +}; + +static bool pri_packet_is_valid(xpacket_t *pack) +{ + const xproto_entry_t *xe_nt = NULL; + const xproto_entry_t *xe_te = NULL; + // DBG(GENERAL, "\n"); + xe_nt = xproto_card_entry(&PROTO_TABLE(PRI), XPACKET_OP(pack)); + return xe_nt != NULL || xe_te != NULL; +} + +static void pri_packet_dump(const char *msg, xpacket_t *pack) +{ + DBG(GENERAL, "%s\n", msg); +} +/*------------------------- REGISTER Handling --------------------------*/ +static int proc_pri_info_write(struct file *file, const char __user *buffer, unsigned long count, void *data) +{ + xpd_t *xpd = data; + struct PRI_priv_data *priv; + char buf[MAX_PROC_WRITE]; + char *p; + char *tok; + static const char *msg = "PROC"; /* for logs */ + int ret = 0; + bool got_localloop = 0; + bool got_nolocalloop = 0; + bool got_te = 0; + bool got_nt = 0; + bool got_e1 = 0; + bool got_t1 = 0; + bool got_j1 = 0; + + if(!xpd) + return -ENODEV; + priv = xpd->priv; + if(count >= MAX_PROC_WRITE) { /* leave room for null */ + XPD_ERR(xpd, "write too long (%ld)\n", count); + return -E2BIG; + } + if(copy_from_user(buf, buffer, count)) { + XPD_ERR(xpd, "Failed reading user data\n"); + return -EFAULT; + } + buf[count] = '\0'; + XPD_DBG(PROC, xpd, "PRI-SETUP: got %s\n", buf); + /* + * First parse. Act only of *everything* is good. + */ + p = buf; + while((tok = strsep(&p, " \t\v\n")) != NULL) { + if(*tok == '\0') + continue; + XPD_DBG(PROC, xpd, "Got token='%s'\n", tok); + if(strnicmp(tok, "LOCALLOOP", 8) == 0) + got_localloop = 1; + else if(strnicmp(tok, "NOLOCALLOOP", 8) == 0) + got_nolocalloop = 1; + else if(strnicmp(tok, "NT", 2) == 0) + got_nt = 1; + else if(strnicmp(tok, "TE", 2) == 0) + got_te = 1; + else if(strnicmp(tok, "E1", 2) == 0) + got_e1 = 1; + else if(strnicmp(tok, "T1", 2) == 0) + got_t1 = 1; + else if(strnicmp(tok, "J1", 2) == 0) { + got_j1 = 1; + } else { + XPD_NOTICE(xpd, "PRI-SETUP: unknown keyword: '%s'\n", tok); + return -EINVAL; + } + } + if(got_e1) + ret = set_pri_proto(xpd, PRI_PROTO_E1); + else if(got_t1) + ret = set_pri_proto(xpd, PRI_PROTO_T1); + else if(got_j1) + ret = set_pri_proto(xpd, PRI_PROTO_J1); + if(priv->pri_protocol == PRI_PROTO_0) { + XPD_ERR(xpd, + "Must set PRI protocol (E1/T1/J1) before setting other parameters\n"); + return -EINVAL; + } + if(got_localloop) + ret = set_localloop(msg, xpd, 1); + if(got_nolocalloop) + ret = set_localloop(msg, xpd, 0); + if(got_nt) + ret = set_nt(msg, xpd, 1); + if(got_te) + ret = set_nt(msg, xpd, 0); + return (ret) ? ret : count; +} + + +static int proc_pri_info_read(char *page, char **start, off_t off, int count, int *eof, void *data) +{ + int len = 0; + unsigned long flags; + xpd_t *xpd = data; + struct PRI_priv_data *priv; + int i; + + DBG(PROC, "\n"); + if(!xpd) + return -ENODEV; + spin_lock_irqsave(&xpd->lock, flags); + priv = xpd->priv; + BUG_ON(!priv); + len += sprintf(page + len, "PRI: %s %s%s (deflaw=%d, dchan=%d)\n", + (priv->is_nt) ? "NT" : "TE", + pri_protocol_name(priv->pri_protocol), + (priv->local_loopback) ? " LOCALLOOP" : "", + priv->deflaw, priv->dchan_num); + len += sprintf(page + len, "%05d Layer1: ", priv->layer1_replies); + if(priv->poll_noreplies > 1) + len += sprintf(page + len, "No Replies [%d]\n", + priv->poll_noreplies); + else { + len += sprintf(page + len, "%s\n", + ((priv->layer1_up) ? "UP" : "DOWN")); + len += sprintf(page + len, + "Framer Status: FRS0=0x%02X, FRS1=0x%02X ALARMS:", + priv->reg_frs0, priv->reg_frs1); + if(priv->reg_frs0 & REG_FRS0_LOS) + len += sprintf(page + len, " RED"); + if(priv->reg_frs0 & REG_FRS0_AIS) + len += sprintf(page + len, " BLUE"); + if(priv->reg_frs0 & REG_FRS0_RRA) + len += sprintf(page + len, " YELLOW"); + len += sprintf(page + len, "\n"); + } + len += sprintf(page + len, "D-Channel: TX=[%5d] (0x%02X) RX=[%5d] (0x%02X) ", + priv->dchan_tx_counter, priv->dchan_tx_sample, + priv->dchan_rx_counter, priv->dchan_rx_sample); + if(priv->dchan_alive) { + len += sprintf(page + len, "(alive %d K-ticks)\n", + priv->dchan_alive_ticks/1000); + } else { + len += sprintf(page + len, "(dead)\n"); + } + for(i = 0; i < NUM_LEDS; i++) + len += sprintf(page + len, "LED #%d: %d\n", i, priv->ledstate[i]); + spin_unlock_irqrestore(&xpd->lock, flags); + if (len <= off+count) + *eof = 1; + *start = page + off; + len -= off; + if (len > count) + len = count; + if (len < 0) + len = 0; + return len; +} + +static int __init card_pri_startup(void) +{ + DBG(GENERAL, "\n"); + + INFO("revision %s\n", XPP_VERSION); + xproto_register(&PROTO_TABLE(PRI)); + return 0; +} + +static void __exit card_pri_cleanup(void) +{ + DBG(GENERAL, "\n"); + xproto_unregister(&PROTO_TABLE(PRI)); +} + +MODULE_DESCRIPTION("XPP PRI Card Driver"); +MODULE_AUTHOR("Oron Peled <oron@actcom.co.il>"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(XPP_VERSION); +MODULE_ALIAS_XPD(XPD_TYPE_PRI); + +module_init(card_pri_startup); +module_exit(card_pri_cleanup); |