diff options
Diffstat (limited to 'kernel/xpp/card_bri.c')
-rw-r--r-- | kernel/xpp/card_bri.c | 1731 |
1 files changed, 1731 insertions, 0 deletions
diff --git a/kernel/xpp/card_bri.c b/kernel/xpp/card_bri.c new file mode 100644 index 0000000..998d22a --- /dev/null +++ b/kernel/xpp/card_bri.c @@ -0,0 +1,1731 @@ +/* + * 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_bri.h" +#include "zap_debug.h" +#include "xpd.h" +#include "xbus-core.h" + +static const char rcsid[] = "$Id$"; + +#ifndef CONFIG_ZAPATA_BRI_DCHANS +#error CONFIG_ZAPATA_BRI_DCHANS is not defined +#endif + +DEF_PARM(int, print_dbg, 0, 0644, "Print DBG statements"); /* must be before zap_debug.h */ +DEF_PARM(uint, poll_interval, 500, 0644, "Poll channel state interval in milliseconds (0 - disable)"); +DEF_PARM_BOOL(nt_keepalive, 1, 0644, "Force BRI_NT to keep trying connection"); +#ifdef DEBUG_PCMTX +DEF_PARM(int, pcmtx, -1, 0644, "Forced PCM value to transmit (negative to disable)"); +DEF_PARM(int, pcmtx_chan, 0, 0644, "channel to force PCM value"); +#endif + +enum xhfc_states { + ST_RESET = 0, /* G/F0 */ + /* TE */ + ST_TE_SENSING = 2, /* F2 */ + ST_TE_DEACTIVATED = 3, /* F3 */ + ST_TE_SIGWAIT = 4, /* F4 */ + ST_TE_IDENT = 5, /* F5 */ + ST_TE_SYNCED = 6, /* F6 */ + ST_TE_ACTIVATED = 7, /* F7 */ + ST_TE_LOST_FRAMING = 8, /* F8 */ + /* NT */ + ST_NT_DEACTIVATED = 1, /* G1 */ + ST_NT_ACTIVATING = 2, /* G2 */ + ST_NT_ACTIVATED = 3, /* G3 */ + ST_NT_DEACTIVTING = 4, /* G4 */ +}; + +static const char *xhfc_state_name(xpd_type_t xpd_type, enum xhfc_states state) +{ + const char *p; + +#define _E(x) [ST_ ## x] = #x + static const char *te_names[] = { + _E(RESET), + _E(TE_SENSING), + _E(TE_DEACTIVATED), + _E(TE_SIGWAIT), + _E(TE_IDENT), + _E(TE_SYNCED), + _E(TE_ACTIVATED), + _E(TE_LOST_FRAMING), + }; + static const char *nt_names[] = { + _E(RESET), + _E(NT_DEACTIVATED), + _E(NT_ACTIVATING), + _E(NT_ACTIVATED), + _E(NT_DEACTIVTING), + }; +#undef _E + if(xpd_type == XPD_TYPE_BRI_TE) { + if ((state < ST_RESET) || (state > ST_TE_LOST_FRAMING)) + p = "TE ???"; + else + p = te_names[state]; + } else { + if ((state < ST_RESET) || (state > ST_NT_DEACTIVTING)) + p = "NT ???"; + else + p = nt_names[state]; + } + return p; +} + +/* xhfc Layer1 physical commands */ +#define HFC_L1_ACTIVATE_TE 0x01 +#define HFC_L1_FORCE_DEACTIVATE_TE 0x02 +#define HFC_L1_ACTIVATE_NT 0x03 +#define HFC_L1_DEACTIVATE_NT 0x04 + +#define HFC_L1_ACTIVATING 1 +#define HFC_L1_ACTIVATED 2 +#define TIMER_T1_MAX 2500 +#define HFC_TIMER_T3 8000 /* 8s activation timer T3 */ +#define HFC_TIMER_T4 500 /* 500ms deactivation timer T4 */ +#define HFC_TIMER_OFF -1 /* timer disabled */ + +#define A_SU_WR_STA 0x30 /* ST/Up state machine register */ +#define V_SU_LD_STA 0x10 +#define V_SU_ACT 0x60 /* start activation/deactivation */ +#define STA_DEACTIVATE 0x40 /* start deactivation in A_SU_WR_STA */ +#define STA_ACTIVATE 0x60 /* start activation in A_SU_WR_STA */ +#define V_SU_SET_G2_G3 0x80 + +#define A_SU_RD_STA 0x30 +typedef union { + struct { + byte v_su_sta:4; + byte v_su_fr_sync:1; + byte v_su_t2_exp:1; + byte v_su_info0:1; + byte v_g2_g3:1; + } bits; + byte reg; +} su_rd_sta_t; + +#define REG30_LOST 3 /* in polls */ +#define DCHAN_LOST 15000 /* in ticks */ + +#define BRI_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_SF \ + ) +#define BRI_BCHAN_SIGCAP ZT_SIG_CLEAR + +#define IS_NT(xpd) ((xpd)->type == XPD_TYPE_BRI_NT) + +/* shift in PCM highway */ +#define SUBUNIT_PCM_SHIFT 4 +#define PCM_SHIFT(mask, sunit) ((mask) << (SUBUNIT_PCM_SHIFT * (sunit))) + +/*---------------- BRI Protocol Commands ----------------------------------*/ + +static int write_state_register(xpd_t *xpd, byte value); +static bool bri_packet_is_valid(xpacket_t *pack); +static void bri_packet_dump(const char *msg, xpacket_t *pack); +static int proc_bri_info_read(char *page, char **start, off_t off, int count, int *eof, void *data); +static int proc_xpd_register_read(char *page, char **start, off_t off, int count, int *eof, void *data); +static int proc_xpd_register_write(struct file *file, const char __user *buffer, unsigned long count, void *data); +static int bri_spanconfig(struct zt_span *span, struct zt_lineconfig *lc); +static int bri_chanconfig(struct zt_chan *chan, int sigtype); +static int bri_startup(struct zt_span *span); +static int bri_shutdown(struct zt_span *span); + +#define PROC_REGISTER_FNAME "slics" +#define PROC_BRI_INFO_FNAME "bri_info" + +#define VALID_CHIPSEL(x) ((x) == 0) + +enum led_state { + BRI_LED_OFF = 0x0, + BRI_LED_ON = 0x1, + /* + * We blink by software from driver, so that + * if the driver malfunction that blink would stop. + */ + // BRI_LED_BLINK_SLOW = 0x2, /* 1/2 a second blink cycle */ + // BRI_LED_BLINK_FAST = 0x3 /* 1/4 a second blink cycle */ +}; + +enum bri_led_names { + GREEN_LED = 0, + RED_LED = 1 +}; + +#define NUM_LEDS 2 +#define LED_TICKS 100 + + +struct bri_leds { + byte state:2; + byte led_sel:1; /* 0 - GREEN, 1 - RED */ + byte reserved:5; +}; + +#ifndef MAX_DFRAME_LEN_L1 +#define MAX_DFRAME_LEN_L1 300 +#endif + +#define DCHAN_BUFSIZE MAX_DFRAME_LEN_L1 + +struct BRI_priv_data { + struct proc_dir_entry *regfile; + struct proc_dir_entry *bri_info; + su_rd_sta_t state_register; + bool initialized; + int t1; /* timer 1 for NT deactivation */ + int t3; /* timer 3 for activation */ + int t4; /* timer 4 for deactivation */ + ulong l1_flags; + bool reg30_good; + uint reg30_ticks; + bool layer1_up; + xpp_line_t card_pcm_mask; + + /* + * D-Chan: buffers + extra state info. + */ + int dchan_r_idx; + byte dchan_rbuf[DCHAN_BUFSIZE]; + byte dchan_tbuf[DCHAN_BUFSIZE]; + bool txframe_begin; + + reg_cmd_t requested_reply; + reg_cmd_t last_reply; + uint tick_counter; + uint poll_counter; + uint dchan_tx_counter; + uint dchan_rx_counter; + uint dchan_rx_drops; + bool dchan_alive; + uint dchan_alive_ticks; + uint dchan_notx_ticks; + uint dchan_norx_ticks; + enum led_state ledstate[NUM_LEDS]; +}; + +static xproto_table_t PROTO_TABLE(BRI_NT); +static xproto_table_t PROTO_TABLE(BRI_TE); + + +DEF_RPACKET_DATA(BRI, SET_LED, /* Set one of the LED's */ + struct bri_leds bri_leds; + ); + +static /* 0x33 */ DECLARE_CMD(BRI, SET_LED, enum bri_led_names which_led, enum led_state to_led_state); + +#define DO_LED(xpd, which, tostate) \ + CALL_PROTO(BRI, SET_LED, (xpd)->xbus, (xpd), (which), (tostate)) + +#define DEBUG_BUF_SIZE (100) +static void dump_hex_buf(xpd_t *xpd, char *msg, byte *buf, size_t len) +{ + char debug_buf[DEBUG_BUF_SIZE + 1]; + int i; + int n = 0; + + debug_buf[0] = '\0'; + for(i = 0; i < len && n < DEBUG_BUF_SIZE; i++) + n += snprintf(&debug_buf[n], DEBUG_BUF_SIZE - n, "%02X ", buf[i]); + XPD_DBG(GENERAL, xpd, "%s[0..%zd]: %s%s\n", msg, len-1, debug_buf, + (n >= DEBUG_BUF_SIZE)?"...":""); +} + +static void dump_dchan_packet(xpd_t *xpd, bool transmit, byte *buf, int len) +{ + struct BRI_priv_data *priv; + char msgbuf[MAX_PROC_WRITE]; + char ftype = '?'; + char *direction; + int frame_begin; + + priv = xpd->priv; + BUG_ON(!priv); + if(transmit) { + direction = "TX"; + frame_begin = priv->txframe_begin; + } else { + direction = "RX"; + frame_begin = 1; + } + if(frame_begin) { /* Packet start */ + if(!IS_SET(buf[0], 7)) + ftype = 'I'; /* Information */ + else if(IS_SET(buf[0], 7) && !IS_SET(buf[0], 6)) + ftype = 'S'; /* Supervisory */ + else if(IS_SET(buf[0], 7) && IS_SET(buf[0], 6)) + ftype = 'U'; /* Unnumbered */ + else + XPD_NOTICE(xpd, "Unknown frame type 0x%X\n", buf[0]); + + snprintf(msgbuf, MAX_PROC_WRITE, "D-Chan %s = (%c) ", direction, ftype); + } else { + snprintf(msgbuf, MAX_PROC_WRITE, "D-Chan %s = ", direction); + } + dump_hex_buf(xpd, msgbuf, buf, len); +} + +static void layer1_state(xpd_t *xpd, bool up) +{ + struct BRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(priv->layer1_up == up) + return; + priv->layer1_up = up; + XPD_DBG(SIGNAL, xpd, "STATE CHANGE: Layer1 %s\n", (up)?"UP":"DOWN"); +} + +static void dchan_state(xpd_t *xpd, bool up) +{ + struct BRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(priv->dchan_alive == up) + return; + if(up) { + XPD_DBG(SIGNAL, xpd, "STATE CHANGE: D-Channel RUNNING\n"); + priv->dchan_alive = 1; + } else { + XPD_DBG(SIGNAL, xpd, "STATE CHANGE: D-Channel STOPPED\n"); + priv->dchan_rx_counter = priv->dchan_tx_counter = priv->dchan_rx_drops = 0; + priv->dchan_alive = 0; + priv->dchan_alive_ticks = 0; + } +} + +static void xpd_activation(xpd_t *xpd, bool on) +{ + struct BRI_priv_data *priv; + xbus_t *xbus; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + xbus = xpd->xbus; + XPD_DBG(SIGNAL, xpd, "%s\n", (on)?"ON":"OFF"); + switch(xpd->type) { + case XPD_TYPE_BRI_TE: + if(on) { + XPD_DBG(SIGNAL, xpd, "HFC_L1_ACTIVATE_TE\n"); + set_bit(HFC_L1_ACTIVATING, &priv->l1_flags); + write_state_register(xpd, STA_ACTIVATE); + priv->t3 = HFC_TIMER_T3; + } else { + XPD_DBG(SIGNAL, xpd, "HFC_L1_FORCE_DEACTIVATE_TE\n"); + write_state_register(xpd, STA_DEACTIVATE); + } + break; + case XPD_TYPE_BRI_NT: + if(on) { + XPD_DBG(SIGNAL, xpd, "HFC_L1_ACTIVATE_NT\n"); + priv->t1 = TIMER_T1_MAX; + set_bit(HFC_L1_ACTIVATING, &priv->l1_flags); + write_state_register(xpd, STA_ACTIVATE | V_SU_SET_G2_G3); + } else { + XPD_DBG(SIGNAL, xpd, "HFC_L1_DEACTIVATE_NT\n"); + write_state_register(xpd, STA_DEACTIVATE); + } + break; + default: + XPD_ERR(xpd, "%s: Bad xpd type %d\n", __FUNCTION__, xpd->type); + BUG(); + } +} + + +/* + * D-Chan receive + */ +static int rx_dchan(xpd_t *xpd, reg_cmd_t *regcmd) +{ + xbus_t *xbus; + struct BRI_priv_data *priv; + byte *src; + byte *dst; + byte *dchan_buf; + struct zt_chan *dchan; + uint len; + bool eoframe; + int idx; + int ret = 0; + + src = REG_XDATA(regcmd); + len = regcmd->bytes; + eoframe = regcmd->eoframe; + if(len <= 0) + return 0; + if(!SPAN_REGISTERED(xpd)) /* Nowhere to copy data */ + return 0; + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + xbus = xpd->xbus; +#ifdef XPP_DEBUGFS + xbus_log(xbus, xpd, 0, regcmd, sizeof(reg_cmd_t)); /* 0 = RX */ +#endif + dchan = &xpd->span.chans[2]; + if(!IS_SET(xpd->offhook, 2)) { /* D-chan is used? */ + static int rate_limit; + + if((rate_limit++ % 1000) == 0) + XPD_DBG(SIGNAL, xpd, "D-Chan unused\n"); + dchan->bytes2receive = 0; + dchan->bytes2transmit = 0; + goto out; + } + dchan_buf = dchan->readchunk; + idx = priv->dchan_r_idx; + if(idx + len >= DCHAN_BUFSIZE) { + XPD_ERR(xpd, "D-Chan RX overflow: %d\n", idx); + dump_hex_buf(xpd, " current packet", src, len); + dump_hex_buf(xpd, " dchan_buf", dchan_buf, idx); + ret = -ENOSPC; + if(eoframe) + goto drop; + goto out; + } + dst = dchan_buf + idx; + idx += len; + priv->dchan_r_idx = idx; + memcpy(dst, src, len); + if(!eoframe) + goto out; + if(idx < 4) { + XPD_NOTICE(xpd, "D-Chan RX short frame (idx=%d)\n", idx); + dump_hex_buf(xpd, "D-Chan RX: current packet", src, len); + dump_hex_buf(xpd, "D-Chan RX: chan_buf", dchan_buf, idx); + ret = -EPROTO; + goto drop; + } + if(dchan_buf[idx-1]) { + XPD_NOTICE(xpd, "D-Chan RX Bad checksum: [%02X:%02X=%02X] (%d)\n", + dchan_buf[idx-3], dchan_buf[idx-2], dchan_buf[idx-1], dchan_buf[idx-1]); + dump_hex_buf(xpd, "D-Chan RX: current packet", src, len); + dump_hex_buf(xpd, "D-Chan RX: chan_buf", dchan_buf, idx); + ret = -EPROTO; + goto drop; + } + if(print_dbg) + dump_dchan_packet(xpd, 0, dchan_buf, idx /* - 3 */); /* Print checksum? */ + /* + * Tell Zaptel that we received idx-1 bytes. They include the data and a 2-byte checksum. + * The last byte (that we don't pass on) is 0 if the checksum is correct. If it were wrong, + * we would drop the packet in the "if(dchan_buf[idx-1])" above. + */ + dchan->bytes2receive = idx - 1; + dchan->eofrx = 1; + priv->dchan_rx_counter++; + priv->dchan_norx_ticks = 0; +drop: + priv->dchan_r_idx = 0; +out: + return ret; +} + +static int send_bri_multibyte(xpd_t *xpd, byte *buf, int len, bool eoftx) +{ + xbus_t *xbus = xpd->xbus; + xframe_t *xframe; + xpacket_t *pack; + reg_cmd_t *reg_cmd; + int ret; + + BUG_ON(len < 0); + /* + * Zero length multibyte is legal and has special meaning for the + * firmware: + * eoftx==1: Start sending us D-channel packets. + * eoftx==0: Stop sending us D-channel packets. + */ + if(len > MULTIBYTE_MAX_LEN) { + XPD_ERR(xpd, "%s: len=%d is too long. dropping.\n", __FUNCTION__, len); + return -EINVAL; + } + XFRAME_NEW_CMD(xframe, pack, xbus, GLOBAL, REGISTER_REQUEST, xpd->xbus_idx); + reg_cmd = &RPACKET_FIELD(pack, GLOBAL, REGISTER_REQUEST, reg_cmd); + reg_cmd->bytes = len; + reg_cmd->eoframe = eoftx; + reg_cmd->multibyte = 1; + if(len > 0) { + memcpy(REG_XDATA(reg_cmd), (byte *)buf, len); + } else { + XPD_DBG(REGS, xpd, "Magic Packet (eoftx=%d)\n", eoftx); + } +#ifdef XPP_DEBUGFS + xbus_log(xbus, xpd, 1, reg_cmd, sizeof(reg_cmd_t)); /* 1 = TX */ +#else + if(print_dbg) + dump_xframe("SEND_BRI_MULTI", xbus, xframe); +#endif + ret = send_cmd_frame(xbus, xframe); + if(ret < 0) + XPD_NOTICE(xpd, "%s: failed sending xframe\n", __FUNCTION__); + return ret; +} + +/* + * D-Chan transmit + */ +static int tx_dchan(xpd_t *xpd) +{ + struct BRI_priv_data *priv; + struct zt_chan *dchan; + int len; + int eoframe; + int ret; + + priv = xpd->priv; + BUG_ON(!priv); + if(!IS_NT(xpd)) { + static int rate_limit; + + if (priv->t3 > HFC_TIMER_OFF) { + /* timer expired ? */ + if (--priv->t3 == 0) { + if ((rate_limit % 1003) >= 5) + XPD_DBG(SIGNAL, xpd, "T3 expired\n"); + priv->t3 = HFC_TIMER_OFF; + clear_bit(HFC_L1_ACTIVATING, &priv->l1_flags); + xpd_activation(xpd, 0); /* Deactivate TE */ + } + } + if (priv->t4 > HFC_TIMER_OFF) { + /* timer expired ? */ + if (--priv->t4 == 0) { + if ((rate_limit % 1003) >= 5) + XPD_DBG(SIGNAL, xpd, "T4 expired\n"); + priv->t4 = HFC_TIMER_OFF; + } + } + rate_limit++; + } + if(!SPAN_REGISTERED(xpd) || !(xpd->span.flags & ZT_FLAG_RUNNING)) + return 0; + dchan = &xpd->chans[2]; + len = dchan->bytes2transmit; /* dchan's hdlc package len */ + eoframe = dchan->eoftx; /* dchan's end of frame */ + dchan->bytes2transmit = 0; + dchan->eoftx = 0; + dchan->bytes2receive = 0; + dchan->eofrx = 0; + if(len <= 0) + return 0; /* Nothing to transmit on D channel */ + if(len > MULTIBYTE_MAX_LEN) { + XPD_ERR(xpd, "%s: len=%d. need to split. Unimplemented.\n", __FUNCTION__, len); + return -EINVAL; + } + if(!test_bit(HFC_L1_ACTIVATED, &priv->l1_flags) && !test_bit(HFC_L1_ACTIVATING, &priv->l1_flags)) { + XPD_DBG(SIGNAL, xpd, "Want to transmit: Kick D-Channel transmiter\n"); + xpd_activation(xpd, 1); + return 0; + } + if(print_dbg) + dump_dchan_packet(xpd, 1, priv->dchan_tbuf, len); + if(eoframe) + priv->txframe_begin = 1; + else + priv->txframe_begin = 0; + ret = send_bri_multibyte(xpd, priv->dchan_tbuf, len, eoframe); + if(ret < 0) + XPD_NOTICE(xpd, "%s: failed sending xframe\n", __FUNCTION__); + if(eoframe) + priv->dchan_tx_counter++; + priv->dchan_notx_ticks = 0; + return ret; +} + +/*---------------- BRI: Methods -------------------------------------------*/ + +static xpd_t *BRI_card_new(xbus_t *xbus, int unit, int subunit, const xproto_table_t *proto_table, byte subtype, byte revision) +{ + xpd_t *xpd = NULL; + int channels = min(3, CHANNELS_PERXPD); + + XBUS_DBG(GENERAL, xbus, "\n"); + xpd = xpd_alloc(sizeof(struct BRI_priv_data), proto_table, channels); + if(!xpd) + return NULL; + xpd->direction = (proto_table == &PROTO_TABLE(BRI_NT)) ? TO_PHONE : TO_PSTN; + xpd->revision = revision; + xpd->type_name = proto_table->name; + return xpd; +} + +static void clean_proc(xbus_t *xbus, xpd_t *xpd) +{ + struct BRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + XPD_DBG(PROC, xpd, "\n"); +#ifdef CONFIG_PROC_FS + if(priv->regfile) { + XPD_DBG(PROC, xpd, "Removing registers file\n"); + priv->regfile->data = NULL; + remove_proc_entry(PROC_REGISTER_FNAME, xpd->proc_xpd_dir); + } + if(priv->bri_info) { + XPD_DBG(PROC, xpd, "Removing xpd BRI_INFO file\n"); + remove_proc_entry(PROC_BRI_INFO_FNAME, xpd->proc_xpd_dir); + } +#endif +} + +static int BRI_card_init(xbus_t *xbus, xpd_t *xpd) +{ + struct BRI_priv_data *priv; + int ret = 0; + + BUG_ON(!xpd); + XPD_DBG(GENERAL, xpd, "\n"); + priv = xpd->priv; +#ifdef CONFIG_PROC_FS + XPD_DBG(PROC, xpd, "Creating BRI_INFO file\n"); + priv->bri_info = create_proc_read_entry(PROC_BRI_INFO_FNAME, 0444, xpd->proc_xpd_dir, proc_bri_info_read, xpd); + if(!priv->bri_info) { + XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_BRI_INFO_FNAME); + ret = -ENOENT; + goto err; + } + priv->bri_info->owner = THIS_MODULE; + XPD_DBG(PROC, xpd, "Creating registers file\n"); + priv->regfile = create_proc_entry(PROC_REGISTER_FNAME, 0644, xpd->proc_xpd_dir); + if(!priv->regfile) { + XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_REGISTER_FNAME); + goto err; + } + priv->regfile->owner = THIS_MODULE; + priv->regfile->write_proc = proc_xpd_register_write; + priv->regfile->read_proc = proc_xpd_register_read; + priv->regfile->data = xpd; +#endif + priv->t1 = HFC_TIMER_OFF; + ret = run_initialize_registers(xpd); + if(ret < 0) + goto err; + XPD_DBG(PROC, xpd, "done\n"); + priv->initialized = 1; + return 0; +err: + clean_proc(xbus, xpd); + XPD_ERR(xpd, "Failed initializing registers (%d)\n", ret); + return ret; +} + +static int BRI_card_remove(xbus_t *xbus, xpd_t *xpd) +{ + struct BRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + XPD_DBG(GENERAL, xpd, "\n"); + clean_proc(xbus, xpd); + return 0; +} + +static int BRI_card_zaptel_preregistration(xpd_t *xpd, bool on) +{ + xbus_t *xbus; + struct BRI_priv_data *priv; + xpp_line_t tmp_pcm_mask; + int tmp_pcm_len; + unsigned long flags; + int i; + + BUG_ON(!xpd); + xbus = xpd->xbus; + priv = xpd->priv; + BUG_ON(!xbus); + XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off"); + if(!on) { + /* Nothing to do yet */ + return 0; + } + xpd->span.linecompat = ZT_CONFIG_AMI | ZT_CONFIG_CCS; + xpd->span.deflaw = ZT_LAW_ALAW; + BIT_SET(xpd->digital_signalling, 2); /* D-Channel */ + for_each_line(xpd, i) { + struct zt_chan *cur_chan = &xpd->chans[i]; + + XPD_DBG(GENERAL, xpd, "setting BRI channel %d\n", i); + snprintf(cur_chan->name, MAX_CHANNAME, "XPP_%s/%02d/%1d%1d/%d", + xpd->xproto->name, xbus->num, + xpd->addr.unit, xpd->addr.subunit, i); + cur_chan->chanpos = i + 1; + cur_chan->pvt = xpd; + if(i == 2) { /* D-CHAN */ + cur_chan->sigcap = BRI_DCHAN_SIGCAP; + cur_chan->flags |= ZT_FLAG_BRIDCHAN; + cur_chan->flags &= ~ZT_FLAG_HDLC; + + /* Setup big buffers for D-Channel rx/tx */ + cur_chan->readchunk = priv->dchan_rbuf; + cur_chan->writechunk = priv->dchan_tbuf; + priv->dchan_r_idx = 0; + priv->txframe_begin = 1; + + cur_chan->maxbytes2transmit = MULTIBYTE_MAX_LEN; + cur_chan->bytes2transmit = 0; + cur_chan->bytes2receive = 0; + } else + cur_chan->sigcap = BRI_BCHAN_SIGCAP; + } + xpd->offhook = BIT(0) | BIT(1); /* 2*bchan */ + + /* + * Compute PCM lentgh and mask + * We know all cards have been initialized until now + */ + tmp_pcm_mask = 0; + if(xpd->addr.subunit == 0) { + int line_count = 0; + + for(i = 0; i < MAX_SUBUNIT; i++) { + xpd_t *sub_xpd = xpd_byaddr(xbus, xpd->addr.unit, i); + if(sub_xpd) { + tmp_pcm_mask |= PCM_SHIFT(sub_xpd->wanted_pcm_mask, i); + line_count += 2; + } + } + tmp_pcm_len = RPACKET_HEADERSIZE + sizeof(xpp_line_t) + line_count * ZT_CHUNKSIZE; + } else + tmp_pcm_len = 0; + spin_lock_irqsave(&xpd->lock, flags); + xpd->pcm_len = tmp_pcm_len; + xpd->wanted_pcm_mask = xpd->offhook; + priv->card_pcm_mask = tmp_pcm_mask; + xpd->span.spanconfig = bri_spanconfig; + xpd->span.chanconfig = bri_chanconfig; + xpd->span.startup = bri_startup; + xpd->span.shutdown = bri_shutdown; + spin_unlock_irqrestore(&xpd->lock, flags); + return 0; +} + +static int BRI_card_zaptel_postregistration(xpd_t *xpd, bool on) +{ + xbus_t *xbus; + struct BRI_priv_data *priv; + + BUG_ON(!xpd); + xbus = xpd->xbus; + priv = xpd->priv; + BUG_ON(!xbus); + XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off"); + return(0); +} + +static int BRI_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; +} + +/* + * 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 BRI_priv_data *priv; + unsigned int timer_count; + int which_led; + int other_led; + int mod; + + BUG_ON(!xpd); + if(IS_NT(xpd)) { + which_led = RED_LED; + other_led = GREEN_LED; + } else { + which_led = GREEN_LED; + other_led = RED_LED; + } + priv = xpd->priv; + BUG_ON(!priv); + timer_count = xpd->timer_count; + if(xpd->blink_mode) { + if((timer_count % DEFAULT_LED_PERIOD) == 0) { + // led state is toggled + if(priv->ledstate[which_led] == BRI_LED_OFF) { + DO_LED(xpd, which_led, BRI_LED_ON); + DO_LED(xpd, other_led, BRI_LED_ON); + } else { + DO_LED(xpd, which_led, BRI_LED_OFF); + DO_LED(xpd, other_led, BRI_LED_OFF); + } + } + return; + } + if(priv->ledstate[other_led] != BRI_LED_OFF) + DO_LED(xpd, other_led, BRI_LED_OFF); + if(priv->dchan_alive) { + mod = timer_count % 1000; + switch(mod) { + case 0: + DO_LED(xpd, which_led, BRI_LED_ON); + break; + case 500: + DO_LED(xpd, which_led, BRI_LED_OFF); + break; + } + } else if(priv->layer1_up) { + mod = timer_count % 1000; + switch(mod) { + case 0: + case 100: + DO_LED(xpd, which_led, BRI_LED_ON); + break; + case 50: + case 150: + DO_LED(xpd, which_led, BRI_LED_OFF); + break; + } + } else { + if(priv->ledstate[which_led] != BRI_LED_ON) + DO_LED(xpd, which_led, BRI_LED_ON); + } +} + +/* Poll the register ST/Up-State-machine Register, to see if the cable + * if a cable is connected to the port. + */ +static int BRI_card_tick(xbus_t *xbus, xpd_t *xpd) +{ + struct BRI_priv_data *priv; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + if(!priv->initialized || !xbus->self_ticking) + return 0; + if(poll_interval != 0 && (priv->tick_counter % poll_interval) == 0) { + // XPD_DBG(GENERAL, xpd, "%d\n", priv->tick_counter); + priv->poll_counter++; + xpp_register_request(xbus, xpd, 0, 0, 0, A_SU_RD_STA, 0, 0, 0); + + if(IS_NT(xpd) && nt_keepalive && + !test_bit(HFC_L1_ACTIVATED, &priv->l1_flags) && + !test_bit(HFC_L1_ACTIVATING, &priv->l1_flags)) { + XPD_DBG(SIGNAL, xpd, "Kick NT D-Channel\n"); + xpd_activation(xpd, 1); + } + } + /* Detect D-Channel disconnect heuristic */ + priv->dchan_notx_ticks++; + priv->dchan_norx_ticks++; + priv->dchan_alive_ticks++; + if(priv->dchan_alive && (priv->dchan_notx_ticks > DCHAN_LOST || priv->dchan_norx_ticks > DCHAN_LOST)) { + /* + * No tx_dchan() or rx_dchan() for many ticks + * This D-Channel is probabelly dead. + */ + dchan_state(xpd, 0); + } else if(priv->dchan_rx_counter > 1 && priv->dchan_tx_counter > 1) { + if(!priv->dchan_alive) + dchan_state(xpd, 1); + } + /* Detect Layer1 disconnect */ + if(priv->reg30_good && priv->reg30_ticks > poll_interval * REG30_LOST) { + /* No reply for 1/2 a second */ + XPD_ERR(xpd, "Lost state tracking for %d ticks\n", priv->reg30_ticks); + priv->reg30_good = 0; + layer1_state(xpd, 0); + dchan_state(xpd, 0); + } + handle_leds(xbus, xpd); + tx_dchan(xpd); + /* Detect T1 timer expiry on NT */ + if(IS_NT(xpd) && !nt_keepalive) { + if (priv->t1 > HFC_TIMER_OFF) { + if (--priv->t1 == 0) { + XPD_DBG(SIGNAL, xpd, "T1 Expired. Deactivate NT\n"); + priv->t1 = HFC_TIMER_OFF; + clear_bit(HFC_L1_ACTIVATING, &priv->l1_flags); + write_state_register(xpd, STA_DEACTIVATE); + } + } + } + priv->tick_counter++; + priv->reg30_ticks++; + return 0; +} + +static int BRI_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, "BRI: Starting a call\n"); + return -ENOTTY; + default: + report_bad_ioctl(THIS_MODULE->name, xpd, pos, cmd); + return -ENOTTY; + } + return 0; +} + +static int BRI_card_close(xpd_t *xpd, lineno_t pos) +{ + struct zt_chan *chan = &xpd->span.chans[pos]; + + /* Clear D-Channel pending data */ + chan->bytes2receive = 0; + chan->eofrx = 0; + chan->bytes2transmit = 0; + chan->eoftx = 0; + return 0; +} + +/* + * Called only for 'span' keyword in /etc/zaptel.conf + */ +static int bri_spanconfig(struct zt_span *span, struct zt_lineconfig *lc) +{ + xpd_t *xpd = span->pvt; + const char *framingstr = ""; + const char *codingstr = ""; + const char *crcstr = ""; + + /* framing first */ + if (lc->lineconfig & ZT_CONFIG_B8ZS) + framingstr = "B8ZS"; + else if (lc->lineconfig & ZT_CONFIG_AMI) + framingstr = "AMI"; + else if (lc->lineconfig & ZT_CONFIG_HDB3) + framingstr = "HDB3"; + /* then coding */ + if (lc->lineconfig & ZT_CONFIG_ESF) + codingstr = "ESF"; + else if (lc->lineconfig & ZT_CONFIG_D4) + codingstr = "D4"; + else if (lc->lineconfig & ZT_CONFIG_CCS) + codingstr = "CCS"; + /* E1's can enable CRC checking */ + if (lc->lineconfig & ZT_CONFIG_CRC4) + crcstr = "CRC4"; + XPD_DBG(GENERAL, xpd, "[%s]: span=%d (%s) lbo=%d lineconfig=%s/%s/%s (0x%X) sync=%d\n", + IS_NT(xpd)?"NT":"TE", + lc->span, + lc->name, + lc->lbo, + framingstr, codingstr, crcstr, + lc->lineconfig, + lc->sync); + /* + * FIXME: validate + */ + span->lineconfig = lc->lineconfig; + return 0; +} + +/* + * Set signalling type (if appropriate) + * Called from zaptel with spinlock held on chan. Must not call back + * zaptel functions. + */ +static int bri_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; +} + +/* + * Called only for 'span' keyword in /etc/zaptel.conf + */ +static int bri_startup(struct zt_span *span) +{ + xpd_t *xpd = span->pvt; + struct BRI_priv_data *priv; + struct zt_chan *dchan; + + 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); + write_state_register(xpd, 0); /* Enable L1 state machine */ + xpd_activation(xpd, 1); + if(SPAN_REGISTERED(xpd)) { + dchan = &span->chans[2]; + span->flags |= ZT_FLAG_RUNNING; + /* + * Zaptel (wrongly) assume that D-Channel need HDLC decoding + * and during zaptel registration override our flags. + * + * Don't Get Mad, Get Even: Now we override zaptel :-) + */ + dchan->flags |= ZT_FLAG_BRIDCHAN; + dchan->flags &= ~ZT_FLAG_HDLC; + } + return 0; +} + +/* + * Called only for 'span' keyword in /etc/zaptel.conf + */ +static int bri_shutdown(struct zt_span *span) +{ + xpd_t *xpd = span->pvt; + struct BRI_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); + if(IS_NT(xpd)) + xpd_activation(xpd, 0); + return 0; +} + +static void BRI_card_pcm_fromspan(xbus_t *xbus, xpd_t *xpd, xpp_line_t wanted_lines, xpacket_t *pack) +{ + byte *pcm; + struct zt_chan *chans; + unsigned long flags; + int i; + int subunit; + xpp_line_t pcm_mask = 0; + + + BUG_ON(!xbus); + BUG_ON(!xpd); + BUG_ON(!pack); + pcm = RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, pcm); + for(subunit = 0; subunit < MAX_SUBUNIT; subunit++) { + xpd_t *tmp_xpd; + + tmp_xpd = xpd_byaddr(xbus, xpd->addr.unit, subunit); + if(!tmp_xpd || !tmp_xpd->card_present) + continue; + spin_lock_irqsave(&tmp_xpd->lock, flags); + chans = tmp_xpd->span.chans; + for_each_line(tmp_xpd, i) { + if(IS_SET(wanted_lines, i)) { + if(SPAN_REGISTERED(tmp_xpd)) { +#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, tmp_xpd->addr.subunit, 2); + } else + memset((u_char *)pcm, 0x7F, ZT_CHUNKSIZE); + pcm += ZT_CHUNKSIZE; + } + } + pcm_mask |= PCM_SHIFT(wanted_lines, subunit); + XPD_COUNTER(tmp_xpd, PCM_WRITE)++; + spin_unlock_irqrestore(&tmp_xpd->lock, flags); + } + RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, lines) = pcm_mask; +} + +static void BRI_card_pcm_tospan(xbus_t *xbus, xpd_t *xpd, xpacket_t *pack) +{ + byte *pcm; + xpp_line_t pcm_mask; + unsigned long flags; + int subunit; + int i; + + /* + * Subunit 0 handle all other subunits + */ + if(xpd->addr.subunit != 0) + return; + if(!SPAN_REGISTERED(xpd)) + return; + pcm = RPACKET_FIELD(pack, GLOBAL, PCM_READ, pcm); + pcm_mask = RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, lines); + for(subunit = 0; subunit < MAX_SUBUNIT; subunit++, pcm_mask >>= SUBUNIT_PCM_SHIFT) { + xpd_t *tmp_xpd; + + if(!pcm_mask) + break; /* optimize */ + tmp_xpd = xpd_byaddr(xbus, xpd->addr.unit, subunit); + if(!tmp_xpd || !tmp_xpd->card_present || !SPAN_REGISTERED(tmp_xpd)) + continue; + spin_lock_irqsave(&tmp_xpd->lock, flags); + for (i = 0; i < 2; i++) { + xpp_line_t tmp_mask = pcm_mask & (BIT(0) | BIT(1)); + volatile u_char *r; + + if(IS_SET(tmp_mask, i)) { + r = tmp_xpd->span.chans[i].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; + } + } + XPD_COUNTER(tmp_xpd, PCM_READ)++; + spin_unlock_irqrestore(&tmp_xpd->lock, flags); + } +} + +/*---------------- BRI: HOST COMMANDS -------------------------------------*/ + +static /* 0x0F */ HOSTCMD(BRI, XPD_STATE, bool on) +{ + BUG_ON(!xpd); + XPD_DBG(GENERAL, xpd, "%s\n", (on)?"ON":"OFF"); + xpd_activation(xpd, on); + return 0; +} + +static /* 0x0F */ HOSTCMD(BRI, RING, lineno_t chan, bool on) +{ + XPD_ERR(xpd, "%s: Unsupported\n", __FUNCTION__); + return -ENOSYS; +} + +static /* 0x0F */ HOSTCMD(BRI, RELAY_OUT, byte which, bool on) +{ + XPD_ERR(xpd, "%s: Unsupported\n", __FUNCTION__); + return -ENOSYS; +} + +static /* 0x33 */ HOSTCMD(BRI, SET_LED, enum bri_led_names which_led, enum led_state to_led_state) +{ + int ret = 0; + xframe_t *xframe; + xpacket_t *pack; + struct bri_leds *bri_leds; + struct BRI_priv_data *priv; + + BUG_ON(!xbus); + priv = xpd->priv; + BUG_ON(!priv); + XPD_DBG(LEDS, xpd, "%s -> %d\n", + (which_led)?"RED":"GREEN", + to_led_state); + XFRAME_NEW_CMD(xframe, pack, xbus, BRI, SET_LED, xpd->xbus_idx); + bri_leds = &RPACKET_FIELD(pack, BRI, SET_LED, bri_leds); + bri_leds->state = to_led_state; + bri_leds->led_sel = which_led; + XPACKET_LEN(pack) = RPACKET_SIZE(BRI, SET_LED); + ret = send_cmd_frame(xbus, xframe); + priv->ledstate[which_led] = to_led_state; + return ret; +} + +static int write_state_register(xpd_t *xpd, byte value) +{ + int ret; + + XPD_DBG(REGS, xpd, "value = 0x%02X\n", value); + ret = xpp_register_request(xpd->xbus, xpd, + 0, /* chipsel */ + 1, /* writing */ + 0, /* do_subreg */ + A_SU_WR_STA, /* regnum */ + 0, /* subreg */ + value, /* data_low */ + 0 /* data_high */ + ); + return ret; +} + +/*---------------- BRI: Astribank Reply Handlers --------------------------*/ +static void su_new_state(xpd_t *xpd, byte reg_x30) +{ + xbus_t *xbus; + struct BRI_priv_data *priv; + su_rd_sta_t new_state; + + BUG_ON(!xpd); + priv = xpd->priv; + BUG_ON(!priv); + xbus = xpd->xbus; + if(!priv->initialized) { + XPD_ERR(xpd, "%s called on uninitialized AB\n", __FUNCTION__); + return; + } + new_state.reg = reg_x30; + priv->reg30_ticks = 0; + priv->reg30_good = 1; + if((!IS_NT(xpd) && new_state.bits.v_su_sta == ST_TE_ACTIVATED) || + (IS_NT(xpd) && new_state.bits.v_su_sta == ST_NT_ACTIVATED)) { + if(!priv->layer1_up) { + layer1_state(xpd, 1); + update_xpd_status(xpd, ZT_ALARM_NONE); + } + } else { + /* + * Layer 1 disconnected + */ + if(priv->layer1_up) { + layer1_state(xpd, 0); + dchan_state(xpd, 0); + } + /* + * Do NOT notify Zaptel about the disconnection. + * If we do, Asterisk stops transmitting on the D-channel and + * we can't reactivate layer-1. + * Without the notification, Asterisk thinks that we are active + * (although the PSTN stopped layer-1) and on call setup, sends + * us D-channel data, which triggers the layer-1 activation. + */ +#if 0 + update_xpd_status(xpd, ZT_ALARM_RED); +#endif + } + if (priv->state_register.bits.v_su_sta == new_state.bits.v_su_sta) + return; /* same same */ + DBG(SIGNAL, "%02X ---> %02X\n", priv->state_register.reg, reg_x30); + XPD_DBG(SIGNAL, xpd, "%s%i\n", IS_NT(xpd)?"G":"F", new_state.bits.v_su_sta); + + if(!IS_NT(xpd)) { + /* disable T3 ? */ + if ((new_state.bits.v_su_sta <= ST_TE_DEACTIVATED) || (new_state.bits.v_su_sta >= ST_TE_ACTIVATED)) { + XPD_DBG(SIGNAL, xpd, "Disable T3 ?\n"); + priv->t3 = HFC_TIMER_OFF; + } + switch (new_state.bits.v_su_sta) { + case ST_TE_DEACTIVATED: /* F3 */ + XPD_DBG(SIGNAL, xpd, "State ST_TE_DEACTIVATED (F3)\n"); + if (test_and_clear_bit(HFC_L1_ACTIVATED, &priv->l1_flags)) + priv->t4 = HFC_TIMER_T4; + break; + case ST_TE_SIGWAIT: /* F4 */ + XPD_DBG(SIGNAL, xpd, "State ST_TE_SIGWAIT (F4)\n"); + break; + case ST_TE_IDENT: /* F5 */ + XPD_DBG(SIGNAL, xpd, "State ST_TE_IDENT (F5)\n"); + break; + case ST_TE_SYNCED: /* F6 */ + XPD_DBG(SIGNAL, xpd, "State ST_TE_SYNCED (F6)\n"); + break; + case ST_TE_ACTIVATED: /* F7 */ + XPD_DBG(SIGNAL, xpd, "State ST_TE_ACTIVATED (F7)\n"); + if (priv->t4 > HFC_TIMER_OFF) + priv->t4 = HFC_TIMER_OFF; + clear_bit(HFC_L1_ACTIVATING, &priv->l1_flags); + set_bit(HFC_L1_ACTIVATED, &priv->l1_flags); + update_xpd_status(xpd, ZT_ALARM_NONE); + break; + + case ST_TE_LOST_FRAMING: /* F8 */ + XPD_DBG(SIGNAL, xpd, "State ST_TE_LOST_FRAMING (F8)\n"); + priv->t4 = HFC_TIMER_OFF; + break; + default: + XPD_NOTICE(xpd, "Bad TE state: %d\n", new_state.bits.v_su_sta); + break; + } + + } else if(IS_NT(xpd)) { + switch (new_state.bits.v_su_sta) { + case ST_NT_DEACTIVATED: /* G1 */ + XPD_DBG(SIGNAL, xpd, "State ST_NT_DEACTIVATED (G1)\n"); + clear_bit(HFC_L1_ACTIVATED, &priv->l1_flags); + priv->t1 = HFC_TIMER_OFF; + break; + case ST_NT_ACTIVATING: /* G2 */ + XPD_DBG(SIGNAL, xpd, "State ST_NT_ACTIVATING (G2)\n"); + xpd_activation(xpd, 1); + break; + case ST_NT_ACTIVATED: /* G3 */ + XPD_DBG(SIGNAL, xpd, "State ST_NT_ACTIVATED (G3)\n"); + clear_bit(HFC_L1_ACTIVATING, &priv->l1_flags); + set_bit(HFC_L1_ACTIVATED, &priv->l1_flags); + priv->t1 = HFC_TIMER_OFF; + break; + case ST_NT_DEACTIVTING: /* G4 */ + XPD_DBG(SIGNAL, xpd, "State ST_NT_DEACTIVTING (G4)\n"); + priv->t1 = HFC_TIMER_OFF; + break; + default: + XPD_NOTICE(xpd, "Bad NT state: %d\n", new_state.bits.v_su_sta); + break; + } + } else + XPD_ERR(xpd, "%s: Unknown xpd type %d\n", __FUNCTION__, xpd->type); + priv->state_register.reg = new_state.reg; +} + +static int BRI_card_register_reply(xbus_t *xbus, xpd_t *xpd, reg_cmd_t *info) +{ + unsigned long flags; + struct BRI_priv_data *priv; + int ret; + + spin_lock_irqsave(&xpd->lock, flags); + priv = xpd->priv; + BUG_ON(!priv); + if(REG_FIELD(info, do_subreg)) { + XPD_DBG(REGS, xpd, "RS %02X %02X %02X\n", + REG_FIELD(info, regnum), REG_FIELD(info, subreg), REG_FIELD(info, data_low)); + } else { + if (REG_FIELD(info, regnum) != A_SU_RD_STA) + XPD_DBG(REGS, xpd, "RD %02X %02X\n", + REG_FIELD(info, regnum), REG_FIELD(info, data_low)); + } + if(info->multibyte) { + XPD_DBG(REGS, xpd, "Got Multibyte: %d bytes, eoframe: %d\n", + info->bytes, info->eoframe); + ret = rx_dchan(xpd, info); + if (ret < 0) { + priv->dchan_rx_drops++; + if(atomic_read(&xpd->open_counter) > 0) + XPD_NOTICE(xpd, "Multibyte Drop: errno=%d\n", ret); + } + goto end; + } + if(REG_FIELD(info, regnum) == A_SU_RD_STA) { + su_new_state(xpd, REG_FIELD(info, data_low)); + } + + /* Update /proc info only if reply relate to the last slic read request */ + if( + REG_FIELD(&priv->requested_reply, regnum) == REG_FIELD(info, regnum) && + REG_FIELD(&priv->requested_reply, do_subreg) == REG_FIELD(info, do_subreg) && + REG_FIELD(&priv->requested_reply, subreg) == REG_FIELD(info, subreg)) { + priv->last_reply = *info; + } + +end: + spin_unlock_irqrestore(&xpd->lock, flags); + return 0; +} + +static xproto_table_t PROTO_TABLE(BRI_NT) = { + .owner = THIS_MODULE, + .entries = { + /* Table Card Opcode */ + }, + .name = "BRI_NT", + .type = XPD_TYPE_BRI_NT, + .xops = { + .card_new = BRI_card_new, + .card_init = BRI_card_init, + .card_remove = BRI_card_remove, + .card_zaptel_preregistration = BRI_card_zaptel_preregistration, + .card_zaptel_postregistration = BRI_card_zaptel_postregistration, + .card_hooksig = BRI_card_hooksig, + .card_tick = BRI_card_tick, + .card_pcm_fromspan = BRI_card_pcm_fromspan, + .card_pcm_tospan = BRI_card_pcm_tospan, + .card_ioctl = BRI_card_ioctl, + .card_close = BRI_card_close, + .card_register_reply = BRI_card_register_reply, + + .RING = XPROTO_CALLER(BRI, RING), + .RELAY_OUT = XPROTO_CALLER(BRI, RELAY_OUT), + .XPD_STATE = XPROTO_CALLER(BRI, XPD_STATE), + }, + .packet_is_valid = bri_packet_is_valid, + .packet_dump = bri_packet_dump, +}; + +static xproto_table_t PROTO_TABLE(BRI_TE) = { + .owner = THIS_MODULE, + .entries = { + /* Table Card Opcode */ + }, + .name = "BRI_TE", + .type = XPD_TYPE_BRI_TE, + .xops = { + .card_new = BRI_card_new, + .card_init = BRI_card_init, + .card_remove = BRI_card_remove, + .card_zaptel_preregistration = BRI_card_zaptel_preregistration, + .card_zaptel_postregistration = BRI_card_zaptel_postregistration, + .card_hooksig = BRI_card_hooksig, + .card_tick = BRI_card_tick, + .card_pcm_fromspan = BRI_card_pcm_fromspan, + .card_pcm_tospan = BRI_card_pcm_tospan, + .card_ioctl = BRI_card_ioctl, + .card_close = BRI_card_close, + .card_register_reply = BRI_card_register_reply, + + .RING = XPROTO_CALLER(BRI, RING), + .RELAY_OUT = XPROTO_CALLER(BRI, RELAY_OUT), + .XPD_STATE = XPROTO_CALLER(BRI, XPD_STATE), + }, + .packet_is_valid = bri_packet_is_valid, + .packet_dump = bri_packet_dump, +}; + +static bool bri_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(BRI_NT), XPACKET_OP(pack)); + xe_te = xproto_card_entry(&PROTO_TABLE(BRI_TE), XPACKET_OP(pack)); + return xe_nt != NULL || xe_te != NULL; +} + +static void bri_packet_dump(const char *msg, xpacket_t *pack) +{ + DBG(GENERAL, "%s\n", msg); +} +/*------------------------- REGISTER Handling --------------------------*/ + +static int proc_bri_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 BRI_priv_data *priv; + + DBG(PROC, "\n"); + if(!xpd) + return -ENODEV; + spin_lock_irqsave(&xpd->lock, flags); + priv = xpd->priv; + BUG_ON(!priv); + len += sprintf(page + len, "%05d Layer 1: ", priv->poll_counter); + if(priv->reg30_good) { + len += sprintf(page + len, "%-5s ", (priv->layer1_up) ? "UP" : "DOWN"); + len += sprintf(page + len, "%c%d %-15s -- fr_sync=%d t2_exp=%d info0=%d g2_g3=%d\n", + IS_NT(xpd)?'G':'F', + priv->state_register.bits.v_su_sta, + xhfc_state_name(xpd->type, priv->state_register.bits.v_su_sta), + priv->state_register.bits.v_su_fr_sync, + priv->state_register.bits.v_su_t2_exp, + priv->state_register.bits.v_su_info0, + priv->state_register.bits.v_g2_g3); + } else + len += sprintf(page + len, "Unkown\n"); + if(IS_NT(xpd)) + len += sprintf(page + len, "T1 Timer: %d\n", priv->t1); + len += sprintf(page + len, "Tick Counter: %d\n", priv->tick_counter); + len += sprintf(page + len, "Last Poll Reply: %d ticks ago\n", priv->reg30_ticks); + len += sprintf(page + len, "reg30_good=%d\n", priv->reg30_good); + len += sprintf(page + len, "D-Channel: TX=[%5d] RX=[%5d] BAD=[%5d] ", + priv->dchan_tx_counter, priv->dchan_rx_counter, priv->dchan_rx_drops); + 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"); + } + len += sprintf(page + len, "dchan_notx_ticks: %d\n", priv->dchan_notx_ticks); + len += sprintf(page + len, "dchan_norx_ticks: %d\n", priv->dchan_norx_ticks); + len += sprintf(page + len, "LED: %-10s = %d\n", "GREEN", priv->ledstate[GREEN_LED]); + len += sprintf(page + len, "LED: %-10s = %d\n", "RED", priv->ledstate[RED_LED]); + len += sprintf(page + len, "\nDCHAN:\n"); + len += sprintf(page + len, "\n"); + 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; +} + +/* + * + * Direct/Indirect + * | + * | Reg# + * | | + * | | Data (only in Write) + * | | | + * | | +-+-+ + * v v v v + * FF WD 06 01 05 + * ^ ^ + * | | + * | Write/Read + * | + * Chan# + * + */ +static int handle_register_command(xpd_t *xpd, char *cmdline) +{ + unsigned chipsel; + unsigned data = 0; + unsigned xdata1 = 0; + unsigned xdata2 = 0; + char op; /* [W]rite, [R]ead */ + char reg_type; /* [D]irect, [S]ubregister */ + int reg_num; + int subreg; + int elements; + bool writing; + char *p; + reg_cmd_t regcmd; + xbus_t *xbus; + int ret = -EINVAL; + struct BRI_priv_data *priv; + byte buf[MAX_PROC_WRITE]; + + BUG_ON(!xpd); + xbus = xpd->xbus; + BUG_ON(!xbus); + priv = xpd->priv; + BUG_ON(!priv); + if((p = strchr(cmdline, '#')) != NULL) /* Truncate comments */ + *p = '\0'; + if((p = strchr(cmdline, ';')) != NULL) /* Truncate comments */ + *p = '\0'; + for(p = cmdline; *p && (*p == ' ' || *p == '\t'); p++) /* Trim leading whitespace */ + ; + if(*p == '\0') + return 0; + + if(!XBUS_GET(xbus)) { + XBUS_DBG(GENERAL, xbus, "Dropped packet. Is shutting down.\n"); + return -EBUSY; + } + memset(buf, 0, MAX_PROC_WRITE); + elements = sscanf(cmdline, "%d %c%c %x %x %x %x %x", + &chipsel, + &op, ®_type, ®_num, + &subreg, + &data, &xdata1, &xdata2); + XPD_DBG(PROC, xpd, "'%s': %d %c%c %02X %02X %02X\n", cmdline, chipsel, op, reg_type, reg_num, subreg, data); + if(elements < 3) { // At least: chipsel, op, reg_type, reg_num + ERR("Not enough arguments: (%d args) '%s'\n", elements, cmdline); + goto out; + } + if(!VALID_CHIPSEL(chipsel)) { + ERR("Bad chip select number: %d\n", chipsel); + goto out; + } + REG_FIELD(®cmd, chipsel) = chipsel; + switch(op) { + case 'W': + writing = 1; + break; + case 'R': + writing = 0; + break; + default: + ERR("Unkown operation type '%c'\n", op); + goto out; + } + if( + (op == 'W' && reg_type == 'D' && elements != 5) || + (op == 'W' && reg_type == 'S' && elements != 6) || + (op == 'R' && reg_type == 'D' && elements != 4) || + (op == 'R' && reg_type == 'S' && elements != 4) + ) { + ERR("Bad number of elements: '%s' (%d elements): %d %c%c %02X %02X %02X\n", + cmdline, elements, + chipsel, op, reg_type, reg_num, subreg, data); + goto out; + } + switch(reg_type) { + case 'S': + REG_FIELD(®cmd, do_subreg) = 1; + REG_FIELD(®cmd, regnum) = reg_num; + REG_FIELD(®cmd, subreg) = subreg; + REG_FIELD(®cmd, data_low) = data; + break; + case 'D': + REG_FIELD(®cmd, do_subreg) = 0; + REG_FIELD(®cmd, regnum) = reg_num; + REG_FIELD(®cmd, subreg) = 0; + REG_FIELD(®cmd, data_low) = subreg; + break; + case 'M': /* Multi without eoftx */ + case 'm': /* Multi with eoftx */ + if(!writing) { + ERR("Read multibyte is not implemented\n"); + goto out; + } + elements -= 3; + REG_XDATA(®cmd)[0] = reg_num; + REG_XDATA(®cmd)[1] = subreg; + REG_XDATA(®cmd)[2] = data; + REG_XDATA(®cmd)[3] = xdata1; + REG_XDATA(®cmd)[4] = xdata2; + ret = send_bri_multibyte(xpd, REG_XDATA(®cmd), elements, (reg_type == 'm')); + goto out; + default: + ERR("Unkown register type '%c'\n", reg_type); + goto out; + } + regcmd.bytes = sizeof(regcmd) - 1; + REG_FIELD(®cmd, read_request) = writing; + REG_FIELD(®cmd, data_high) = 0; + priv->requested_reply = regcmd; + if(print_dbg) + dump_reg_cmd("BRI", ®cmd, 1); + ret = xpp_register_request(xpd->xbus, xpd, + REG_FIELD(®cmd, chipsel), + writing, + REG_FIELD(®cmd, do_subreg), + REG_FIELD(®cmd, regnum), + REG_FIELD(®cmd, subreg), + REG_FIELD(®cmd, data_low), + REG_FIELD(®cmd, data_high)); +out: + XBUS_PUT(xbus); + return ret; +} + +static int proc_xpd_register_write(struct file *file, const char __user *buffer, unsigned long count, void *data) +{ + xpd_t *xpd = data; + char buf[MAX_PROC_WRITE]; + char *p; + int i; + int ret; + + if(!xpd) + return -ENODEV; + for(i = 0; i < count; /* noop */) { + for(p = buf; p < buf + MAX_PROC_WRITE; p++) { /* read a line */ + if(i >= count) + break; + if(get_user(*p, buffer + i)) + return -EFAULT; + i++; + if(*p == '\n' || *p == '\r') /* whatever */ + break; + } + if(p >= buf + MAX_PROC_WRITE) + return -E2BIG; + *p = '\0'; + ret = handle_register_command(xpd, buf); + if(ret < 0) + return ret; + msleep(1); + } + return count; +} + + +static int proc_xpd_register_read(char *page, char **start, off_t off, int count, int *eof, void *data) +{ + int len = 0; + unsigned long flags; + xpd_t *xpd = data; + reg_cmd_t *info; + struct BRI_priv_data *priv; + + if(!xpd) + return -ENODEV; + priv = xpd->priv; + BUG_ON(!priv); + spin_lock_irqsave(&xpd->lock, flags); + info = &priv->last_reply; + len += sprintf(page + len, "# Writing bad data into this file may damage your hardware!\n"); + len += sprintf(page + len, "# Consult firmware docs first\n"); + len += sprintf(page + len, "#\n"); + if(REG_FIELD(info, do_subreg)) { + len += sprintf(page + len, "#CH\tOP\tReg.\tSub\tDL\n"); + len += sprintf(page + len, "%2d\tRS\t%02X\t%02X\t%02X\n", + REG_FIELD(info, chipsel), + REG_FIELD(info, regnum), REG_FIELD(info, subreg), REG_FIELD(info, data_low)); + } else { + len += sprintf(page + len, "#CH\tOP\tReg.\tDL\n"); + len += sprintf(page + len, "%2d\tRD\t%02X\t%02X\n", + REG_FIELD(info, chipsel), + REG_FIELD(info, regnum), REG_FIELD(info, data_low)); + } + 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; +} + +int __init card_bri_startup(void) +{ + DBG(GENERAL, "\n"); + + INFO("revision %s\n", XPP_VERSION); + xproto_register(&PROTO_TABLE(BRI_NT)); + xproto_register(&PROTO_TABLE(BRI_TE)); + return 0; +} + +void __exit card_bri_cleanup(void) +{ + DBG(GENERAL, "\n"); + xproto_unregister(&PROTO_TABLE(BRI_NT)); + xproto_unregister(&PROTO_TABLE(BRI_TE)); +} + +MODULE_DESCRIPTION("XPP BRI Card Driver"); +MODULE_AUTHOR("Oron Peled <oron@actcom.co.il>"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(XPP_VERSION); +MODULE_ALIAS_XPD(XPD_TYPE_BRI_NT); +MODULE_ALIAS_XPD(XPD_TYPE_BRI_TE); + +module_init(card_bri_startup); +module_exit(card_bri_cleanup); |