diff options
Diffstat (limited to 'sys/i4b/layer1/isic/i4b_hscx.c')
| -rw-r--r-- | sys/i4b/layer1/isic/i4b_hscx.c | 663 |
1 files changed, 0 insertions, 663 deletions
diff --git a/sys/i4b/layer1/isic/i4b_hscx.c b/sys/i4b/layer1/isic/i4b_hscx.c deleted file mode 100644 index cac4a13650b6..000000000000 --- a/sys/i4b/layer1/isic/i4b_hscx.c +++ /dev/null @@ -1,663 +0,0 @@ -/* - * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - *--------------------------------------------------------------------------- - * - * i4b - Siemens HSCX chip (B-channel) handling - * -------------------------------------------- - * - * $FreeBSD$ - * - * last edit-date: [Wed Jan 24 09:09:42 2001] - * - *---------------------------------------------------------------------------*/ - -#include "isic.h" - -#if NISIC > 0 - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/mbuf.h> -#include <sys/socket.h> - -#include <net/if.h> - -#include <machine/i4b_debug.h> -#include <machine/i4b_ioctl.h> -#include <machine/i4b_trace.h> - -#include <i4b/layer1/isic/i4b_isic.h> -#include <i4b/layer1/isic/i4b_hscx.h> - -#include <i4b/layer1/i4b_l1.h> - -#include <i4b/include/i4b_global.h> -#include <i4b/include/i4b_mbuf.h> - -/*---------------------------------------------------------------------------* - * HSCX IRQ Handler - *---------------------------------------------------------------------------*/ -void -isic_hscx_irq(register struct l1_softc *sc, u_char ista, int h_chan, u_char ex_irq) -{ - register l1_bchan_state_t *chan = &sc->sc_chan[h_chan]; - u_char exir = 0; - int activity = -1; - u_char cmd = 0; - - NDBGL1(L1_H_IRQ, "%#x", ista); - - if(ex_irq) - { - /* get channel extended irq reg */ - - exir = HSCX_READ(h_chan, H_EXIR); - - if(exir & HSCX_EXIR_RFO) - { - chan->stat_RFO++; - NDBGL1(L1_H_XFRERR, "ex_irq: receive data overflow"); - } - - if((exir & HSCX_EXIR_XDU) && (chan->bprot != BPROT_NONE))/* xmit data underrun */ - { - chan->stat_XDU++; - NDBGL1(L1_H_XFRERR, "ex_irq: xmit data underrun"); - isic_hscx_cmd(sc, h_chan, HSCX_CMDR_XRES); - - if (chan->out_mbuf_head != NULL) /* don't continue to transmit this buffer */ - { - i4b_Bfreembuf(chan->out_mbuf_head); - chan->out_mbuf_cur = chan->out_mbuf_head = NULL; - } - } - - } - - /* rx message end, end of frame */ - - if(ista & HSCX_ISTA_RME) - { - register int fifo_data_len; - u_char rsta; - int error = 0; - - rsta = HSCX_READ(h_chan, H_RSTA); - - if((rsta & 0xf0) != 0xa0) - { - if((rsta & HSCX_RSTA_VFR) == 0) - { - chan->stat_VFR++; - cmd |= (HSCX_CMDR_RHR); - NDBGL1(L1_H_XFRERR, "received invalid Frame"); - error++; - } - - if(rsta & HSCX_RSTA_RDO) - { - chan->stat_RDO++; - NDBGL1(L1_H_XFRERR, "receive data overflow"); - error++; - } - - if((rsta & HSCX_RSTA_CRC) == 0) - { - chan->stat_CRC++; - cmd |= (HSCX_CMDR_RHR); - NDBGL1(L1_H_XFRERR, "CRC check failed"); - error++; - } - - if(rsta & HSCX_RSTA_RAB) - { - chan->stat_RAB++; - NDBGL1(L1_H_XFRERR, "Receive message aborted"); - error++; - } - } - - fifo_data_len = ((HSCX_READ(h_chan, H_RBCL)) & - ((sc->sc_bfifolen)-1)); - - if(fifo_data_len == 0) - fifo_data_len = sc->sc_bfifolen; - - /* all error conditions checked, now decide and take action */ - - if(error == 0) - { - if(chan->in_mbuf == NULL) - { - if((chan->in_mbuf = i4b_Bgetmbuf(BCH_MAX_DATALEN)) == NULL) - panic("L1 isic_hscx_irq: RME, cannot allocate mbuf!\n"); - chan->in_cbptr = chan->in_mbuf->m_data; - chan->in_len = 0; - } - - fifo_data_len -= 1; /* last byte in fifo is RSTA ! */ - - if((chan->in_len + fifo_data_len) <= BCH_MAX_DATALEN) - { - /* read data from HSCX fifo */ - - HSCX_RDFIFO(h_chan, chan->in_cbptr, fifo_data_len); - - cmd |= (HSCX_CMDR_RMC); - isic_hscx_cmd(sc, h_chan, cmd); - cmd = 0; - - chan->in_len += fifo_data_len; - chan->rxcount += fifo_data_len; - - /* setup mbuf data length */ - - chan->in_mbuf->m_len = chan->in_len; - chan->in_mbuf->m_pkthdr.len = chan->in_len; - - if(sc->sc_trace & TRACE_B_RX) - { - i4b_trace_hdr_t hdr; - hdr.unit = L0ISICUNIT(sc->sc_unit); - hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2); - hdr.dir = FROM_NT; - hdr.count = ++sc->sc_trace_bcount; - MICROTIME(hdr.time); - i4b_l1_trace_ind(&hdr, chan->in_mbuf->m_len, chan->in_mbuf->m_data); - } - - (*chan->isic_drvr_linktab->bch_rx_data_ready)(chan->isic_drvr_linktab->unit); - - activity = ACT_RX; - - /* mark buffer ptr as unused */ - - chan->in_mbuf = NULL; - chan->in_cbptr = NULL; - chan->in_len = 0; - } - else - { - NDBGL1(L1_H_XFRERR, "RAWHDLC rx buffer overflow in RME, in_len=%d, fifolen=%d", chan->in_len, fifo_data_len); - chan->in_cbptr = chan->in_mbuf->m_data; - chan->in_len = 0; - cmd |= (HSCX_CMDR_RHR | HSCX_CMDR_RMC); - } - } - else - { - if (chan->in_mbuf != NULL) - { - i4b_Bfreembuf(chan->in_mbuf); - chan->in_mbuf = NULL; - chan->in_cbptr = NULL; - chan->in_len = 0; - } - cmd |= (HSCX_CMDR_RMC); - } - } - - /* rx fifo full */ - - if(ista & HSCX_ISTA_RPF) - { - if(chan->in_mbuf == NULL) - { - if((chan->in_mbuf = i4b_Bgetmbuf(BCH_MAX_DATALEN)) == NULL) - panic("L1 isic_hscx_irq: RPF, cannot allocate mbuf!\n"); - chan->in_cbptr = chan->in_mbuf->m_data; - chan->in_len = 0; - } - - chan->rxcount += sc->sc_bfifolen; - - if((chan->in_len + sc->sc_bfifolen) <= BCH_MAX_DATALEN) - { - /* read data from HSCX fifo */ - - HSCX_RDFIFO(h_chan, chan->in_cbptr, sc->sc_bfifolen); - - chan->in_cbptr += sc->sc_bfifolen; - chan->in_len += sc->sc_bfifolen; - } - else - { - if(chan->bprot == BPROT_NONE) - { - /* setup mbuf data length */ - - chan->in_mbuf->m_len = chan->in_len; - chan->in_mbuf->m_pkthdr.len = chan->in_len; - - if(sc->sc_trace & TRACE_B_RX) - { - i4b_trace_hdr_t hdr; - hdr.unit = L0ISICUNIT(sc->sc_unit); - hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2); - hdr.dir = FROM_NT; - hdr.count = ++sc->sc_trace_bcount; - MICROTIME(hdr.time); - i4b_l1_trace_ind(&hdr, chan->in_mbuf->m_len, chan->in_mbuf->m_data); - } - - /* silence detection */ - - if(!(i4b_l1_bchan_tel_silence(chan->in_mbuf->m_data, chan->in_mbuf->m_len))) - activity = ACT_RX; - -#if defined (__FreeBSD__) && __FreeBSD__ > 4 - (void) IF_HANDOFF(&chan->rx_queue, chan->in_mbuf, NULL); -#else - if(!(IF_QFULL(&chan->rx_queue))) - { - IF_ENQUEUE(&chan->rx_queue, chan->in_mbuf); - } - else - { - i4b_Bfreembuf(chan->in_mbuf); - } -#endif - /* signal upper driver that data is available */ - - (*chan->isic_drvr_linktab->bch_rx_data_ready)(chan->isic_drvr_linktab->unit); - - /* alloc new buffer */ - - if((chan->in_mbuf = i4b_Bgetmbuf(BCH_MAX_DATALEN)) == NULL) - panic("L1 isic_hscx_irq: RPF, cannot allocate new mbuf!\n"); - - /* setup new data ptr */ - - chan->in_cbptr = chan->in_mbuf->m_data; - - /* read data from HSCX fifo */ - - HSCX_RDFIFO(h_chan, chan->in_cbptr, sc->sc_bfifolen); - - chan->in_cbptr += sc->sc_bfifolen; - chan->in_len = sc->sc_bfifolen; - - chan->rxcount += sc->sc_bfifolen; - } - else - { - NDBGL1(L1_H_XFRERR, "RAWHDLC rx buffer overflow in RPF, in_len=%d", chan->in_len); - chan->in_cbptr = chan->in_mbuf->m_data; - chan->in_len = 0; - cmd |= (HSCX_CMDR_RHR); - } - } - - /* command to release fifo space */ - - cmd |= HSCX_CMDR_RMC; - } - - /* transmit fifo empty, new data can be written to fifo */ - - if(ista & HSCX_ISTA_XPR) - { - /* - * for a description what is going on here, please have - * a look at isic_bchannel_start() in i4b_bchan.c ! - */ - - int activity = -1; - int len; - int nextlen; - - NDBGL1(L1_H_IRQ, "unit %d, chan %d - XPR, Tx Fifo Empty!", sc->sc_unit, h_chan); - - if(chan->out_mbuf_cur == NULL) /* last frame is transmitted */ - { - IF_DEQUEUE(&chan->tx_queue, chan->out_mbuf_head); - - if(chan->out_mbuf_head == NULL) - { - chan->state &= ~HSCX_TX_ACTIVE; - (*chan->isic_drvr_linktab->bch_tx_queue_empty)(chan->isic_drvr_linktab->unit); - } - else - { - chan->state |= HSCX_TX_ACTIVE; - chan->out_mbuf_cur = chan->out_mbuf_head; - chan->out_mbuf_cur_ptr = chan->out_mbuf_cur->m_data; - chan->out_mbuf_cur_len = chan->out_mbuf_cur->m_len; - - if(sc->sc_trace & TRACE_B_TX) - { - i4b_trace_hdr_t hdr; - hdr.unit = L0ISICUNIT(sc->sc_unit); - hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2); - hdr.dir = FROM_TE; - hdr.count = ++sc->sc_trace_bcount; - MICROTIME(hdr.time); - i4b_l1_trace_ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data); - } - - if(chan->bprot == BPROT_NONE) - { - if(!(i4b_l1_bchan_tel_silence(chan->out_mbuf_cur->m_data, chan->out_mbuf_cur->m_len))) - activity = ACT_TX; - } - else - { - activity = ACT_TX; - } - } - } - - len = 0; - - while(chan->out_mbuf_cur && len != sc->sc_bfifolen) - { - nextlen = min(chan->out_mbuf_cur_len, sc->sc_bfifolen - len); - -#ifdef NOTDEF - printf("i:mh=%x, mc=%x, mcp=%x, mcl=%d l=%d nl=%d # ", - chan->out_mbuf_head, - chan->out_mbuf_cur, - chan->out_mbuf_cur_ptr, - chan->out_mbuf_cur_len, - len, - next_len); -#endif - - isic_hscx_waitxfw(sc, h_chan); /* necessary !!! */ - - HSCX_WRFIFO(h_chan, chan->out_mbuf_cur_ptr, nextlen); - cmd |= HSCX_CMDR_XTF; - - len += nextlen; - chan->txcount += nextlen; - - chan->out_mbuf_cur_ptr += nextlen; - chan->out_mbuf_cur_len -= nextlen; - - if(chan->out_mbuf_cur_len == 0) - { - if((chan->out_mbuf_cur = chan->out_mbuf_cur->m_next) != NULL) - { - chan->out_mbuf_cur_ptr = chan->out_mbuf_cur->m_data; - chan->out_mbuf_cur_len = chan->out_mbuf_cur->m_len; - - if(sc->sc_trace & TRACE_B_TX) - { - i4b_trace_hdr_t hdr; - hdr.unit = L0ISICUNIT(sc->sc_unit); - hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2); - hdr.dir = FROM_TE; - hdr.count = ++sc->sc_trace_bcount; - MICROTIME(hdr.time); - i4b_l1_trace_ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data); - } - } - else - { - if (chan->bprot != BPROT_NONE) - cmd |= HSCX_CMDR_XME; - i4b_Bfreembuf(chan->out_mbuf_head); - chan->out_mbuf_head = NULL; - } - - } - } - } - - if(cmd) /* is there a command for the HSCX ? */ - { - isic_hscx_cmd(sc, h_chan, cmd); /* yes, to HSCX */ - } - - /* call timeout handling routine */ - - if(activity == ACT_RX || activity == ACT_TX) - (*chan->isic_drvr_linktab->bch_activity)(chan->isic_drvr_linktab->unit, activity); -} - -/*---------------------------------------------------------------------------* - * HSCX initialization - * - * for telephony: extended transparent mode 1 - * for raw hdlc: transparent mode 0 - *---------------------------------------------------------------------------*/ -void -isic_hscx_init(struct l1_softc *sc, int h_chan, int activate) -{ - l1_bchan_state_t *chan = &sc->sc_chan[h_chan]; - - HSCX_WRITE(h_chan, H_MASK, 0xff); /* mask irq's */ - - if(sc->sc_ipac) - { - /* CCR1: Power Up, Clock Mode 5 */ - HSCX_WRITE(h_chan, H_CCR1, HSCX_CCR1_PU | /* power up */ - HSCX_CCR1_CM1); /* IPAC clock mode 5 */ - } - else - { - /* CCR1: Power Up, Clock Mode 5 */ - HSCX_WRITE(h_chan, H_CCR1, HSCX_CCR1_PU | /* power up */ - HSCX_CCR1_CM2 | /* HSCX clock mode 5 */ - HSCX_CCR1_CM0); - } - - /* XAD1: Transmit Address Byte 1 */ - HSCX_WRITE(h_chan, H_XAD1, 0xff); - - /* XAD2: Transmit Address Byte 2 */ - HSCX_WRITE(h_chan, H_XAD2, 0xff); - - /* RAH2: Receive Address Byte High Reg. 2 */ - HSCX_WRITE(h_chan, H_RAH2, 0xff); - - /* XBCH: reset Transmit Byte Count High */ - HSCX_WRITE(h_chan, H_XBCH, 0x00); - - /* RLCR: reset Receive Length Check Register */ - HSCX_WRITE(h_chan, H_RLCR, 0x00); - - /* CCR2: set tx/rx clock shift bit 0 */ - /* disable CTS irq, disable RIE irq*/ - HSCX_WRITE(h_chan, H_CCR2, HSCX_CCR2_XCS0|HSCX_CCR2_RCS0); - - /* XCCR: tx bit count per time slot */ - HSCX_WRITE(h_chan, H_XCCR, 0x07); - - /* RCCR: rx bit count per time slot */ - HSCX_WRITE(h_chan, H_RCCR, 0x07); - - if(sc->sc_bustyp == BUS_TYPE_IOM2) - { - switch(h_chan) - { - case HSCX_CH_A: /* Prepare HSCX channel A */ - /* TSAX: tx clock shift bits 1 & 2 */ - /* tx time slot number */ - HSCX_WRITE(h_chan, H_TSAX, 0x2f); - - /* TSAR: rx clock shift bits 1 & 2 */ - /* rx time slot number */ - HSCX_WRITE(h_chan, H_TSAR, 0x2f); - break; - - case HSCX_CH_B: /* Prepare HSCX channel B */ - /* TSAX: tx clock shift bits 1 & 2 */ - /* tx time slot number */ - HSCX_WRITE(h_chan, H_TSAX, 0x03); - - /* TSAR: rx clock shift bits 1 & 2 */ - /* rx time slot number */ - HSCX_WRITE(h_chan, H_TSAR, 0x03); - break; - } - } - else /* IOM 1 setup */ - { - /* TSAX: tx clock shift bits 1 & 2 */ - /* tx time slot number */ - HSCX_WRITE(h_chan, H_TSAX, 0x07); - - /* TSAR: rx clock shift bits 1 & 2 */ - /* rx time slot number */ - HSCX_WRITE(h_chan, H_TSAR, 0x07); - } - - if(activate) - { - if(chan->bprot == BPROT_RHDLC) - { - /* HDLC Frames, transparent mode 0 */ - HSCX_WRITE(h_chan, H_MODE, - HSCX_MODE_MDS1|HSCX_MODE_RAC|HSCX_MODE_RTS); - } - else - { - /* Raw Telephony, extended transparent mode 1 */ - HSCX_WRITE(h_chan, H_MODE, - HSCX_MODE_MDS1|HSCX_MODE_MDS0|HSCX_MODE_ADM|HSCX_MODE_RTS); - } -#if 0 - isic_hscx_cmd(sc, h_chan, HSCX_CMDR_RHR|HSCX_CMDR_XRES); -#else - isic_hscx_cmd(sc, h_chan, HSCX_CMDR_RHR); -#endif - } - else - { - /* TSAX: tx time slot */ - HSCX_WRITE(h_chan, H_TSAX, 0xff); - - /* TSAR: rx time slot */ - HSCX_WRITE(h_chan, H_TSAR, 0xff); - - /* Raw Telephony, extended transparent mode 1 */ - HSCX_WRITE(h_chan, H_MODE, - HSCX_MODE_MDS1|HSCX_MODE_MDS0|HSCX_MODE_ADM|HSCX_MODE_RTS); - } - - /* don't touch ICA, EXA and EXB bits, this could be HSCX_CH_B */ - /* always disable RSC and TIN */ - - chan->hscx_mask |= HSCX_MASK_RSC | HSCX_MASK_TIN; - - if(activate) - { - /* enable */ - chan->hscx_mask &= ~(HSCX_MASK_RME | HSCX_MASK_RPF | HSCX_MASK_XPR); - } - else - { - /* disable */ - chan->hscx_mask |= HSCX_MASK_RME | HSCX_MASK_RPF | HSCX_MASK_XPR; - } - - /* handle ICA, EXA, and EXB via interrupt mask of channel b */ - - if (h_chan == HSCX_CH_A) - { - if (activate) - HSCX_B_IMASK &= ~(HSCX_MASK_EXA | HSCX_MASK_ICA); - else - HSCX_B_IMASK |= HSCX_MASK_EXA | HSCX_MASK_ICA; - HSCX_WRITE(HSCX_CH_A, H_MASK, HSCX_A_IMASK); - HSCX_WRITE(HSCX_CH_B, H_MASK, HSCX_B_IMASK); - } - else - { - if (activate) - HSCX_B_IMASK &= ~HSCX_MASK_EXB; - else - HSCX_B_IMASK |= HSCX_MASK_EXB; - HSCX_WRITE(HSCX_CH_B, H_MASK, HSCX_B_IMASK); - } - - /* clear spurious interrupts left over */ - - if(h_chan == HSCX_CH_A) - { - HSCX_READ(h_chan, H_EXIR); - HSCX_READ(h_chan, H_ISTA); - } - else /* mask ICA, because it must not be cleared by reading ISTA */ - { - HSCX_WRITE(HSCX_CH_B, H_MASK, HSCX_B_IMASK | HSCX_MASK_ICA); - HSCX_READ(h_chan, H_EXIR); - HSCX_READ(h_chan, H_ISTA); - HSCX_WRITE(HSCX_CH_B, H_MASK, HSCX_B_IMASK); - } -} - -/*---------------------------------------------------------------------------* - * write command to HSCX command register - *---------------------------------------------------------------------------*/ -void -isic_hscx_cmd(struct l1_softc *sc, int h_chan, unsigned char cmd) -{ - int timeout = 20; - - while(((HSCX_READ(h_chan, H_STAR)) & HSCX_STAR_CEC) && timeout) - { - DELAY(10); - timeout--; - } - - if(timeout == 0) - { - NDBGL1(L1_H_ERR, "HSCX wait for CEC timeout!"); - } - - HSCX_WRITE(h_chan, H_CMDR, cmd); -} - -/*---------------------------------------------------------------------------* - * wait for HSCX transmit FIFO write enable - *---------------------------------------------------------------------------*/ -void -isic_hscx_waitxfw(struct l1_softc *sc, int h_chan) -{ -#define WAITVAL 50 -#define WAITTO 200 - - int timeout = WAITTO; - - while((!(((HSCX_READ(h_chan, H_STAR)) & - (HSCX_STAR_CEC | HSCX_STAR_XFW)) == HSCX_STAR_XFW)) && timeout) - { - DELAY(WAITVAL); - timeout--; - } - - if(timeout == 0) - { - NDBGL1(L1_H_ERR, "HSCX wait for XFW timeout!"); - } - else if (timeout != WAITTO) - { - NDBGL1(L1_H_XFRERR, "HSCX wait for XFW time: %d uS", (WAITTO-timeout)*50); - } -} - -#endif /* NISIC > 0 */ |