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freebsd-dev/sys/i4b/layer1/i4b_avm_fritz_pnp.c
Peter Wemm c3aac50f28 $Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00

1269 lines
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/*
* Copyright (c) 1999 Udo Schweigert. 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.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* 4. Altered versions must be plainly marked as such, and must not be
* misrepresented as being the original software and/or documentation.
*
* 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.
*
*---------------------------------------------------------------------------
* A lot of code was borrowed from i4b_bchan.c and i4b_hscx.c
* Based on AVM Fritz!PCI driver by Gary Jennejohn
*---------------------------------------------------------------------------
* In case of trouble please contact Udo Schweigert <ust@cert.siemens.de>
*---------------------------------------------------------------------------
*
* Fritz!Card PnP specific routines for isic driver
* ------------------------------------------------
*
* $FreeBSD$
*
* last edit-date: [Thu 10 Jun 08:50:28 CEST 1999]
*
*---------------------------------------------------------------------------*/
#if defined(__FreeBSD__)
#include "isic.h"
#include "opt_i4b.h"
#if NISIC > 0 && defined(AVM_PNP)
#include <sys/param.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include <sys/ioccom.h>
#else
#include <sys/ioctl.h>
#endif
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <machine/clock.h>
#include <i386/isa/isa_device.h>
#include <sys/socket.h>
#include <net/if.h>
#include <machine/i4b_debug.h>
#include <machine/i4b_ioctl.h>
#include <i4b/include/i4b_global.h>
#include <i4b/include/i4b_l1l2.h>
#include <i4b/include/i4b_mbuf.h>
#include <i4b/layer1/i4b_l1.h>
#include <i4b/layer1/i4b_isac.h>
#include <i4b/layer1/i4b_hscx.h>
static void hscx_write_reg(int, u_int, struct isic_softc *, int);
static void hscx_write_reg_val(int, u_int, u_char, struct isic_softc *);
static u_char hscx_read_reg(int, u_int, struct isic_softc *);
static void hscx_read_fifo(int, void *, size_t, struct isic_softc *);
static void hscx_write_fifo(int, const void *, size_t, struct isic_softc *);
static void avm_pnp_hscx_int_handler(struct isic_softc *);
static void avm_pnp_hscx_intr(int, int, int, struct isic_softc *);
static void avm_pnp_init_linktab(struct isic_softc *);
static void avm_pnp_bchannel_setup(int, int, int, int);
static void avm_pnp_bchannel_start(int, int);
static void avm_pnp_hscx_init(struct isic_softc *, int, int);
static void avm_pnp_bchannel_stat(int, int, bchan_statistics_t *);
static void avm_pnp_set_linktab(int, int, drvr_link_t *);
static void avm_pnp_intr(int);
static isdn_link_t * avm_pnp_ret_linktab(int, int);
extern void isicintr_sc(struct isic_softc *);
/*---------------------------------------------------------------------------*
* AVM PnP Fritz!Card special registers
*---------------------------------------------------------------------------*/
/*
* register offsets from i/o base
*/
#define STAT0_OFFSET 0x02
#define STAT1_OFFSET 0x03
#define ADDR_REG_OFFSET 0x04
/* these 2 are used to select an ISAC register set */
#define ISAC_LO_REG_OFFSET 0x04
#define ISAC_HI_REG_OFFSET 0x06
/* offset higher than this goes to the HI register set */
#define MAX_LO_REG_OFFSET 0x2f
/* mask for the offset */
#define ISAC_REGSET_MASK 0x0f
/* the offset from the base to the ISAC registers */
#define ISAC_REG_OFFSET 0x10
/* the offset from the base to the ISAC FIFO */
#define ISAC_FIFO 0x02
/* not really the HSCX, but sort of */
#define HSCX_FIFO 0x00
#define HSCX_STAT 0x04
/*
* AVM PnP Status Latch 0 read only bits
*/
#define ASL_IRQ_ISAC 0x01 /* ISAC interrupt, active low */
#define ASL_IRQ_HSCX 0x02 /* HSX interrupt, active low */
#define ASL_IRQ_TIMER 0x04 /* Timer interrupt, active low */
#define ASL_IRQ_BCHAN ASL_IRQ_HSCX
/* actually active LOW */
#define ASL_IRQ_Pending 0x07
/*
* AVM Status Latch 0 write only bits
*/
#define ASL_RESET_ALL 0x01 /* reset siemens IC's, active 1 */
#define ASL_TIMERDISABLE 0x02 /* active high */
#define ASL_TIMERRESET 0x04 /* active high */
#define ASL_ENABLE_INT 0x08 /* active high */
#define ASL_TESTBIT 0x10 /* active high */
/*
* AVM Status Latch 1 write only bits
*/
#define ASL1_INTSEL 0x0f /* active high */
#define ASL1_ENABLE_IOM 0x80 /* active high */
/*
* "HSCX" mode bits
*/
#define HSCX_MODE_ITF_FLG 0x01
#define HSCX_MODE_TRANS 0x02
#define HSCX_MODE_CCR_7 0x04
#define HSCX_MODE_CCR_16 0x08
#define HSCX_MODE_TESTLOOP 0x80
/*
* "HSCX" status bits
*/
#define HSCX_STAT_RME 0x01
#define HSCX_STAT_RDO 0x10
#define HSCX_STAT_CRCVFRRAB 0x0E
#define HSCX_STAT_CRCVFR 0x06
#define HSCX_STAT_RML_MASK 0x3f00
/*
* "HSCX" interrupt bits
*/
#define HSCX_INT_XPR 0x80
#define HSCX_INT_XDU 0x40
#define HSCX_INT_RPR 0x20
#define HSCX_INT_MASK 0xE0
/*
* "HSCX" command bits
*/
#define HSCX_CMD_XRS 0x80
#define HSCX_CMD_XME 0x01
#define HSCX_CMD_RRS 0x20
#define HSCX_CMD_XML_MASK 0x3f00
/* "fake" addresses for the non-existent HSCX */
/* note: the unit number is in the lower byte for both the ISAC and "HSCX" */
#define HSCX0FAKE 0xfa000 /* read: fake0 */
#define HSCX1FAKE 0xfa100 /* read: fake1 */
#define IS_HSCX_MASK 0xfff00
/*
* to prevent deactivating the "HSCX" when both channels are active we
* define an HSCX_ACTIVE flag which is or'd into the channel's state
* flag in avm_pnp_bchannel_setup upon active and cleared upon deactivation.
* It is set high to allow room for new flags.
*/
#define HSCX_AVMPNP_ACTIVE 0x1000
/*---------------------------------------------------------------------------*
* AVM read fifo routines
*---------------------------------------------------------------------------*/
static void
avm_pnp_read_fifo(void *buf, const void *base, size_t len)
{
int unit;
struct isic_softc *sc;
unit = (int)base & 0xff;
sc = &isic_sc[unit];
/* check whether the target is an HSCX */
if (((int)base & IS_HSCX_MASK) == HSCX0FAKE)
{
hscx_read_fifo(0, buf, len, sc);
return;
}
if (((int)base & IS_HSCX_MASK) == HSCX1FAKE)
{
hscx_read_fifo(1, buf, len, sc);
return;
}
/* tell the board to access the ISAC fifo */
outb(sc->sc_port + ADDR_REG_OFFSET, ISAC_FIFO);
insb(sc->sc_port + ISAC_REG_OFFSET, (u_char *)buf, len);
}
static void
hscx_read_fifo(int chan, void *buf, size_t len, struct isic_softc *sc)
{
u_char *ip;
size_t cnt;
outb(sc->sc_port + ADDR_REG_OFFSET, chan);
ip = (u_char *)buf;
cnt = 0;
while (cnt < len)
{
*ip++ = inb(sc->sc_port + ISAC_REG_OFFSET);
cnt++;
}
}
/*---------------------------------------------------------------------------*
* AVM write fifo routines
*---------------------------------------------------------------------------*/
static void
avm_pnp_write_fifo(void *base, const void *buf, size_t len)
{
int unit;
struct isic_softc *sc;
unit = (int)base & 0xff;
sc = &isic_sc[unit];
/* check whether the target is an HSCX */
if (((int)base & IS_HSCX_MASK) == HSCX0FAKE)
{
hscx_write_fifo(0, buf, len, sc);
return;
}
if (((int)base & IS_HSCX_MASK) == HSCX1FAKE)
{
hscx_write_fifo(1, buf, len, sc);
return;
}
/* tell the board to use the ISAC fifo */
outb(sc->sc_port + ADDR_REG_OFFSET, ISAC_FIFO);
outsb(sc->sc_port + ISAC_REG_OFFSET, (const u_char *)buf, len);
}
static void
hscx_write_fifo(int chan, const void *buf, size_t len, struct isic_softc *sc)
{
register const u_char *ip;
register size_t cnt;
isic_Bchan_t *Bchan = &sc->sc_chan[chan];
sc->avma1pp_cmd &= ~HSCX_CMD_XME;
sc->avma1pp_txl = 0;
if (Bchan->out_mbuf_cur == NULL && Bchan->bprot != BPROT_NONE)
sc->avma1pp_cmd |= HSCX_CMD_XME;
if (len != sc->sc_bfifolen)
sc->avma1pp_txl = len;
hscx_write_reg(chan, HSCX_STAT, sc, 3);
ip = (const u_char *)buf;
cnt = 0;
while (cnt < len)
{
outb(sc->sc_port + ISAC_REG_OFFSET, *ip++);
cnt++;
}
}
/*---------------------------------------------------------------------------*
* AVM write register routines
*---------------------------------------------------------------------------*/
static void
avm_pnp_write_reg(u_char *base, u_int offset, u_int v)
{
int unit;
struct isic_softc *sc;
u_char reg_bank;
unit = (int)base & 0xff;
sc = &isic_sc[unit];
/* check whether the target is an HSCX */
if (((int)base & IS_HSCX_MASK) == HSCX0FAKE)
{
hscx_write_reg_val(0, offset, v, sc);
return;
}
if (((int)base & IS_HSCX_MASK) == HSCX1FAKE)
{
hscx_write_reg_val(1, offset, v, sc);
return;
}
/* must be the ISAC */
reg_bank = (offset > MAX_LO_REG_OFFSET) ? ISAC_HI_REG_OFFSET:ISAC_LO_REG_OFFSET;
/* set the register bank */
outb(sc->sc_port + ADDR_REG_OFFSET, reg_bank);
outb(sc->sc_port + ISAC_REG_OFFSET + (offset & ISAC_REGSET_MASK), v);
}
static void
hscx_write_reg(int chan, u_int off, struct isic_softc *sc, int which)
{
/* HACK */
if (off == H_MASK)
return;
/* point at the correct channel */
outb(sc->sc_port + ADDR_REG_OFFSET, chan);
if (which & 4)
outb(sc->sc_port + ISAC_REG_OFFSET + off + 2, sc->avma1pp_prot);
if (which & 2)
outb(sc->sc_port + ISAC_REG_OFFSET + off + 1, sc->avma1pp_txl);
if (which & 1)
outb(sc->sc_port + ISAC_REG_OFFSET + off, sc->avma1pp_cmd);
}
static void
hscx_write_reg_val(int chan, u_int off, u_char val, struct isic_softc *sc)
{
/* HACK */
if (off == H_MASK)
return;
/* point at the correct channel */
outb(sc->sc_port + ADDR_REG_OFFSET, chan);
outb(sc->sc_port + ISAC_REG_OFFSET + off, val);
}
/*---------------------------------------------------------------------------*
* AVM read register routines
*---------------------------------------------------------------------------*/
static u_char
avm_pnp_read_reg(u_char *base, u_int offset)
{
int unit;
struct isic_softc *sc;
u_char reg_bank;
unit = (int)base & 0xff;
sc = &isic_sc[unit];
/* check whether the target is an HSCX */
if (((int)base & IS_HSCX_MASK) == HSCX0FAKE)
return(hscx_read_reg(0, offset, sc));
if (((int)base & IS_HSCX_MASK) == HSCX1FAKE)
return(hscx_read_reg(1, offset, sc));
/* must be the ISAC */
reg_bank = (offset > MAX_LO_REG_OFFSET) ? ISAC_HI_REG_OFFSET:ISAC_LO_REG_OFFSET;
/* set the register bank */
outb(sc->sc_port + ADDR_REG_OFFSET, reg_bank);
return(inb(sc->sc_port + ISAC_REG_OFFSET +
(offset & ISAC_REGSET_MASK)));
}
static u_char
hscx_read_reg(int chan, u_int off, struct isic_softc *sc)
{
/* HACK */
if (off == H_ISTA)
return(0);
/* point at the correct channel */
outb(sc->sc_port + ADDR_REG_OFFSET, chan);
return(inb(sc->sc_port + ISAC_REG_OFFSET + off));
}
/*---------------------------------------------------------------------------*
* isic_probe_avm_pnp - probe Fritz!Card PnP
*---------------------------------------------------------------------------*/
int
isic_probe_avm_pnp(struct isa_device *dev, unsigned int iobase2)
{
struct isic_softc *sc = &isic_sc[dev->id_unit];
/* check max unit range */
if(dev->id_unit >= ISIC_MAXUNIT)
{
printf("isic%d: Error, unit %d >= ISIC_MAXUNIT for AVM Fritz! PnP\n",
dev->id_unit, dev->id_unit);
return(0);
}
sc->sc_unit = dev->id_unit;
/* check IRQ validity */
switch(ffs(dev->id_irq) - 1)
{
case 3:
case 4:
case 5:
case 7:
case 10:
case 11:
case 12:
case 15:
break;
default:
printf("isic%d: Error, invalid IRQ [%d] specified for AVM Fritz! PnP!\n",
dev->id_unit, ffs(dev->id_irq)-1);
return(0);
break;
}
sc->sc_irq = dev->id_irq;
dev->id_intr = (inthand2_t *) avm_pnp_intr;
/* check if memory addr specified */
if(dev->id_maddr)
{
printf("isic%d: Error, mem addr 0x%lx specified for AVM Fritz! PnP!\n",
dev->id_unit, (u_long)dev->id_maddr);
return(0);
}
dev->id_msize = 0;
/* check if we got an iobase */
if(!((dev->id_iobase >= 0x160) && (dev->id_iobase <= 0x360)))
{
printf("isic%d: Error, invalid iobase 0x%x specified for AVM Fritz! PnP!\n",
dev->id_unit, dev->id_iobase);
return(0);
}
sc->sc_port = dev->id_iobase;
/* setup access routines */
sc->clearirq = NULL;
sc->readreg = avm_pnp_read_reg;
sc->writereg = avm_pnp_write_reg;
sc->readfifo = avm_pnp_read_fifo;
sc->writefifo = avm_pnp_write_fifo;
/* setup card type */
sc->sc_cardtyp = CARD_TYPEP_AVM_PNP;
/* setup IOM bus type */
sc->sc_bustyp = BUS_TYPE_IOM2;
sc->sc_ipac = 0;
sc->sc_bfifolen = HSCX_FIFO_LEN;
/* the ISAC lives at offset 0x10, but we can't use that. */
/* instead, put the unit number into the lower byte - HACK */
ISAC_BASE = (caddr_t)((int)(dev->id_iobase & ~0xff) + dev->id_unit);
outb(sc->sc_port + STAT0_OFFSET, ASL_RESET_ALL|ASL_TIMERDISABLE);
ISAC_WRITE(I_MASK, 0x0);
outb(sc->sc_port + STAT0_OFFSET, ASL_TIMERRESET|ASL_ENABLE_INT|ASL_TIMERDISABLE);
ISAC_WRITE(I_MASK, 0x41);
return (1);
}
/*---------------------------------------------------------------------------*
* isic_attach_avm_pnp - attach Fritz!Card PnP
*---------------------------------------------------------------------------*/
int
isic_attach_avm_pnp(struct isa_device *dev, unsigned int iobase2)
{
struct isic_softc *sc;
u_int v;
int unit;
unit = dev->id_unit;
sc = &isic_sc[unit];
/* this thing doesn't have an HSCX, so fake the base addresses */
/* put the unit number into the lower byte - HACK */
HSCX_A_BASE = (caddr_t)(HSCX0FAKE + unit);
HSCX_B_BASE = (caddr_t)(HSCX1FAKE + unit);
/* reset the card */
/* the Linux driver does this to clear any pending ISAC interrupts */
v = 0;
v = ISAC_READ(I_STAR);
v = ISAC_READ(I_MODE);
v = ISAC_READ(I_ADF2);
v = ISAC_READ(I_ISTA);
if (v & ISAC_ISTA_EXI)
{
v = ISAC_READ(I_EXIR);
}
v = ISAC_READ(I_CIRR);
ISAC_WRITE(I_MASK, 0xff);
/* the Linux driver does this to clear any pending HSCX interrupts */
v = hscx_read_reg(0, HSCX_STAT, sc);
v = hscx_read_reg(0, HSCX_STAT+1, sc);
v = hscx_read_reg(0, HSCX_STAT+2, sc);
v = hscx_read_reg(0, HSCX_STAT+3, sc);
v = hscx_read_reg(1, HSCX_STAT, sc);
v = hscx_read_reg(1, HSCX_STAT+1, sc);
v = hscx_read_reg(1, HSCX_STAT+2, sc);
v = hscx_read_reg(1, HSCX_STAT+3, sc);
outb(sc->sc_port + STAT0_OFFSET, ASL_RESET_ALL|ASL_TIMERDISABLE);
DELAY(SEC_DELAY/100); /* 10 ms */
outb(sc->sc_port + STAT0_OFFSET, ASL_TIMERRESET|ASL_ENABLE_INT|ASL_TIMERDISABLE);
DELAY(SEC_DELAY/100); /* 10 ms */
outb(sc->sc_port + STAT1_OFFSET, ASL1_ENABLE_IOM+(ffs(sc->sc_irq)-1));
DELAY(SEC_DELAY/100); /* 10 ms */
printf("isic%d: ISAC %s (IOM-%c)\n", unit,
"2085 Version A1/A2 or 2086/2186 Version 1.1",
sc->sc_bustyp == BUS_TYPE_IOM1 ? '1' : '2');
/* init the ISAC */
isic_isac_init(sc);
/* init the "HSCX" */
avm_pnp_bchannel_setup(sc->sc_unit, HSCX_CH_A, BPROT_NONE, 0);
avm_pnp_bchannel_setup(sc->sc_unit, HSCX_CH_B, BPROT_NONE, 0);
/* can't use the normal B-Channel stuff */
avm_pnp_init_linktab(sc);
/* set trace level */
sc->sc_trace = TRACE_OFF;
sc->sc_state = ISAC_IDLE;
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
sc->sc_obuf = NULL;
sc->sc_op = NULL;
sc->sc_ol = 0;
sc->sc_freeflag = 0;
sc->sc_obuf2 = NULL;
sc->sc_freeflag2 = 0;
#if defined(__FreeBSD__) && __FreeBSD__ >=3
callout_handle_init(&sc->sc_T3_callout);
callout_handle_init(&sc->sc_T4_callout);
#endif
/* init higher protocol layers */
MPH_Status_Ind(sc->sc_unit, STI_ATTACH, sc->sc_cardtyp);
return(0);
}
/*
* this is the real interrupt routine
*/
static void
avm_pnp_hscx_intr(int h_chan, int stat, int cnt, struct isic_softc *sc)
{
register isic_Bchan_t *chan = &sc->sc_chan[h_chan];
int activity = -1;
DBGL1(L1_H_IRQ, "avm_pnp_hscx_intr", ("%#x\n", stat));
if((stat & HSCX_INT_XDU) && (chan->bprot != BPROT_NONE))/* xmit data underrun */
{
chan->stat_XDU++;
DBGL1(L1_H_XFRERR, "avm_pnp_hscx_intr", ("xmit data underrun\n"));
/* abort the transmission */
sc->avma1pp_txl = 0;
sc->avma1pp_cmd |= HSCX_CMD_XRS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
sc->avma1pp_cmd &= ~HSCX_CMD_XRS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
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;
}
}
/*
* The following is based on examination of the Linux driver.
*
* The logic here is different than with a "real" HSCX; all kinds
* of information (interrupt/status bits) are in stat.
* HSCX_INT_RPR indicates a receive interrupt
* HSCX_STAT_RDO indicates an overrun condition, abort -
* otherwise read the bytes ((stat & HSCX_STZT_RML_MASK) >> 8)
* HSCX_STAT_RME indicates end-of-frame and apparently any
* CRC/framing errors are only reported in this state.
* if ((stat & HSCX_STAT_CRCVFRRAB) != HSCX_STAT_CRCVFR)
* CRC/framing error
*/
if(stat & HSCX_INT_RPR)
{
register int fifo_data_len;
int error = 0;
/* always have to read the FIFO, so use a scratch buffer */
u_char scrbuf[HSCX_FIFO_LEN];
if(stat & HSCX_STAT_RDO)
{
chan->stat_RDO++;
DBGL1(L1_H_XFRERR, "avm_pnp_hscx_intr", ("receive data overflow\n"));
error++;
}
fifo_data_len = cnt;
if(fifo_data_len == 0)
fifo_data_len = sc->sc_bfifolen;
/* ALWAYS read data from HSCX fifo */
HSCX_RDFIFO(h_chan, scrbuf, fifo_data_len);
chan->rxcount += fifo_data_len;
/* 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 avm_pnp_hscx_intr: RME, cannot allocate mbuf!\n");
chan->in_cbptr = chan->in_mbuf->m_data;
chan->in_len = 0;
}
if((chan->in_len + fifo_data_len) <= BCH_MAX_DATALEN)
{
/* OK to copy the data */
bcopy(scrbuf, chan->in_cbptr, fifo_data_len);
chan->in_cbptr += fifo_data_len;
chan->in_len += 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 = 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);
MPH_Trace_Ind(&hdr, chan->in_mbuf->m_len, chan->in_mbuf->m_data);
}
if (stat & HSCX_STAT_RME)
{
if((stat & HSCX_STAT_CRCVFRRAB) == HSCX_STAT_CRCVFR)
{
(*chan->drvr_linktab->bch_rx_data_ready)(chan->drvr_linktab->unit);
activity = ACT_RX;
/* mark buffer ptr as unused */
chan->in_mbuf = NULL;
chan->in_cbptr = NULL;
chan->in_len = 0;
}
else
{
chan->stat_CRC++;
DBGL1(L1_H_XFRERR, "avm_pnp_hscx_intr", ("CRC/RAB\n"));
if (chan->in_mbuf != NULL)
{
i4b_Bfreembuf(chan->in_mbuf);
chan->in_mbuf = NULL;
chan->in_cbptr = NULL;
chan->in_len = 0;
}
}
}
} /* END enough space in mbuf */
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 = 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);
MPH_Trace_Ind(&hdr, chan->in_mbuf->m_len, chan->in_mbuf->m_data);
}
/* move rx'd data to rx queue */
IF_ENQUEUE(&chan->rx_queue, chan->in_mbuf);
(*chan->drvr_linktab->bch_rx_data_ready)(chan->drvr_linktab->unit);
if(!(isic_hscx_silence(chan->in_mbuf->m_data, chan->in_mbuf->m_len)))
activity = ACT_RX;
/* alloc new buffer */
if((chan->in_mbuf = i4b_Bgetmbuf(BCH_MAX_DATALEN)) == NULL)
panic("L1 avm_pnp_hscx_intr: RPF, cannot allocate new mbuf!\n");
/* setup new data ptr */
chan->in_cbptr = chan->in_mbuf->m_data;
/* OK to copy the data */
bcopy(scrbuf, chan->in_cbptr, fifo_data_len);
chan->in_cbptr += fifo_data_len;
chan->in_len = fifo_data_len;
chan->rxcount += fifo_data_len;
}
else
{
DBGL1(L1_H_XFRERR, "avm_pnp_hscx_intr", ("RAWHDLC rx buffer overflow in RPF, in_len=%d\n", chan->in_len));
chan->in_cbptr = chan->in_mbuf->m_data;
chan->in_len = 0;
}
}
} /* if(error == 0) */
else
{
/* land here for RDO */
if (chan->in_mbuf != NULL)
{
i4b_Bfreembuf(chan->in_mbuf);
chan->in_mbuf = NULL;
chan->in_cbptr = NULL;
chan->in_len = 0;
}
sc->avma1pp_txl = 0;
sc->avma1pp_cmd |= HSCX_CMD_RRS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
sc->avma1pp_cmd &= ~HSCX_CMD_RRS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
}
}
/* transmit fifo empty, new data can be written to fifo */
if(stat & HSCX_INT_XPR)
{
/*
* for a description what is going on here, please have
* a look at isic_bchannel_start() in i4b_bchan.c !
*/
DBGL1(L1_H_IRQ, "avm_pnp_hscx_intr", ("unit %d, chan %d - XPR, Tx Fifo Empty!\n", sc->sc_unit, h_chan));
if(chan->out_mbuf_cur == NULL || chan->out_mbuf_head == 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->drvr_linktab->bch_tx_queue_empty)(chan->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 = 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);
MPH_Trace_Ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data);
}
if(chan->bprot == BPROT_NONE)
{
if(!(isic_hscx_silence(chan->out_mbuf_cur->m_data, chan->out_mbuf_cur->m_len)))
activity = ACT_TX;
}
else
{
activity = ACT_TX;
}
}
}
isic_hscx_fifo(chan, sc);
}
/* call timeout handling routine */
if(activity == ACT_RX || activity == ACT_TX)
(*chan->drvr_linktab->bch_activity)(chan->drvr_linktab->unit, activity);
}
/*
* this is the main routine which checks each channel and then calls
* the real interrupt routine as appropriate
*/
static void
avm_pnp_hscx_int_handler(struct isic_softc *sc)
{
u_char stat = 0;
u_char cnt = 0;
stat = hscx_read_reg(0, HSCX_STAT, sc);
if (stat & HSCX_INT_RPR)
cnt = hscx_read_reg(0, HSCX_STAT+1, sc);
if (stat & HSCX_INT_MASK)
avm_pnp_hscx_intr(0, stat, cnt, sc);
cnt = 0;
stat = hscx_read_reg(1, HSCX_STAT, sc);
if (stat & HSCX_INT_RPR)
cnt = hscx_read_reg(1, HSCX_STAT+1, sc);
if (stat & HSCX_INT_MASK)
avm_pnp_hscx_intr(1, stat, cnt, sc);
}
static void
avm_pnp_hscx_init(struct isic_softc *sc, int h_chan, int activate)
{
isic_Bchan_t *chan = &sc->sc_chan[h_chan];
DBGL1(L1_BCHAN, "avm_pnp_hscx_init", ("unit=%d, channel=%d, %s\n",
sc->sc_unit, h_chan, activate ? "activate" : "deactivate"));
if (activate == 0)
{
/* only deactivate if both channels are idle */
if (sc->sc_chan[HSCX_CH_A].state != HSCX_IDLE ||
sc->sc_chan[HSCX_CH_B].state != HSCX_IDLE)
{
return;
}
sc->avma1pp_cmd = HSCX_CMD_XRS|HSCX_CMD_RRS;
sc->avma1pp_prot = HSCX_MODE_TRANS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 5);
return;
}
if(chan->bprot == BPROT_RHDLC)
{
DBGL1(L1_BCHAN, "avm_pnp_hscx_init", ("BPROT_RHDLC\n"));
/* HDLC Frames, transparent mode 0 */
sc->avma1pp_cmd = HSCX_CMD_XRS|HSCX_CMD_RRS;
sc->avma1pp_prot = HSCX_MODE_ITF_FLG;
hscx_write_reg(h_chan, HSCX_STAT, sc, 5);
sc->avma1pp_cmd = HSCX_CMD_XRS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
sc->avma1pp_cmd = 0;
}
else
{
DBGL1(L1_BCHAN, "avm_pnp_hscx_init", ("BPROT_NONE??\n"));
/* Raw Telephony, extended transparent mode 1 */
sc->avma1pp_cmd = HSCX_CMD_XRS|HSCX_CMD_RRS;
sc->avma1pp_prot = HSCX_MODE_TRANS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 5);
sc->avma1pp_cmd = HSCX_CMD_XRS;
hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
sc->avma1pp_cmd = 0;
}
}
static void
avm_pnp_bchannel_setup(int unit, int h_chan, int bprot, int activate)
{
struct isic_softc *sc = &isic_sc[unit];
isic_Bchan_t *chan = &sc->sc_chan[h_chan];
int s = SPLI4B();
if(activate == 0)
{
/* deactivation */
chan->state &= ~HSCX_AVMPNP_ACTIVE;
avm_pnp_hscx_init(sc, h_chan, activate);
}
DBGL1(L1_BCHAN, "avm_pnp_bchannel_setup", ("unit=%d, channel=%d, %s\n",
sc->sc_unit, h_chan, activate ? "activate" : "deactivate"));
/* general part */
chan->unit = sc->sc_unit; /* unit number */
chan->channel = h_chan; /* B channel */
chan->bprot = bprot; /* B channel protocol */
chan->state = HSCX_IDLE; /* B channel state */
/* receiver part */
i4b_Bcleanifq(&chan->rx_queue); /* clean rx queue */
chan->rx_queue.ifq_maxlen = IFQ_MAXLEN;
chan->rxcount = 0; /* reset rx counter */
i4b_Bfreembuf(chan->in_mbuf); /* clean rx mbuf */
chan->in_mbuf = NULL; /* reset mbuf ptr */
chan->in_cbptr = NULL; /* reset mbuf curr ptr */
chan->in_len = 0; /* reset mbuf data len */
/* transmitter part */
i4b_Bcleanifq(&chan->tx_queue); /* clean tx queue */
chan->tx_queue.ifq_maxlen = IFQ_MAXLEN;
chan->txcount = 0; /* reset tx counter */
i4b_Bfreembuf(chan->out_mbuf_head); /* clean tx mbuf */
chan->out_mbuf_head = NULL; /* reset head mbuf ptr */
chan->out_mbuf_cur = NULL; /* reset current mbuf ptr */
chan->out_mbuf_cur_ptr = NULL; /* reset current mbuf data ptr */
chan->out_mbuf_cur_len = 0; /* reset current mbuf data cnt */
if(activate != 0)
{
/* activation */
avm_pnp_hscx_init(sc, h_chan, activate);
chan->state |= HSCX_AVMPNP_ACTIVE;
}
splx(s);
}
static void
avm_pnp_bchannel_start(int unit, int h_chan)
{
struct isic_softc *sc = &isic_sc[unit];
register isic_Bchan_t *chan = &sc->sc_chan[h_chan];
int s;
int activity = -1;
s = SPLI4B(); /* enter critical section */
if(chan->state & HSCX_TX_ACTIVE) /* already running ? */
{
splx(s);
return; /* yes, leave */
}
/* get next mbuf from queue */
IF_DEQUEUE(&chan->tx_queue, chan->out_mbuf_head);
if(chan->out_mbuf_head == NULL) /* queue empty ? */
{
splx(s); /* leave critical section */
return; /* yes, exit */
}
/* init current mbuf values */
chan->out_mbuf_cur = chan->out_mbuf_head;
chan->out_mbuf_cur_len = chan->out_mbuf_cur->m_len;
chan->out_mbuf_cur_ptr = chan->out_mbuf_cur->m_data;
/* activity indicator for timeout handling */
if(chan->bprot == BPROT_NONE)
{
if(!(isic_hscx_silence(chan->out_mbuf_cur->m_data, chan->out_mbuf_cur->m_len)))
activity = ACT_TX;
}
else
{
activity = ACT_TX;
}
chan->state |= HSCX_TX_ACTIVE; /* we start transmitting */
if(sc->sc_trace & TRACE_B_TX) /* if trace, send mbuf to trace dev */
{
i4b_trace_hdr_t hdr;
hdr.unit = 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);
MPH_Trace_Ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data);
}
isic_hscx_fifo(chan, sc);
/* call timeout handling routine */
if(activity == ACT_RX || activity == ACT_TX)
(*chan->drvr_linktab->bch_activity)(chan->drvr_linktab->unit, activity);
splx(s);
}
/*---------------------------------------------------------------------------*
* return the address of isic drivers linktab
*---------------------------------------------------------------------------*/
static isdn_link_t *
avm_pnp_ret_linktab(int unit, int channel)
{
struct isic_softc *sc = &isic_sc[unit];
isic_Bchan_t *chan = &sc->sc_chan[channel];
return(&chan->isdn_linktab);
}
/*---------------------------------------------------------------------------*
* set the driver linktab in the b channel softc
*---------------------------------------------------------------------------*/
static void
avm_pnp_set_linktab(int unit, int channel, drvr_link_t *dlt)
{
struct isic_softc *sc = &isic_sc[unit];
isic_Bchan_t *chan = &sc->sc_chan[channel];
chan->drvr_linktab = dlt;
}
/*---------------------------------------------------------------------------*
* initialize our local linktab
*---------------------------------------------------------------------------*/
static void
avm_pnp_init_linktab(struct isic_softc *sc)
{
isic_Bchan_t *chan = &sc->sc_chan[HSCX_CH_A];
isdn_link_t *lt = &chan->isdn_linktab;
/* make sure the hardware driver is known to layer 4 */
/* avoid overwriting if already set */
if (ctrl_types[CTRL_PASSIVE].set_linktab == NULL)
{
ctrl_types[CTRL_PASSIVE].set_linktab = avm_pnp_set_linktab;
ctrl_types[CTRL_PASSIVE].get_linktab = avm_pnp_ret_linktab;
}
/* local setup */
lt->unit = sc->sc_unit;
lt->channel = HSCX_CH_A;
lt->bch_config = avm_pnp_bchannel_setup;
lt->bch_tx_start = avm_pnp_bchannel_start;
lt->bch_stat = avm_pnp_bchannel_stat;
lt->tx_queue = &chan->tx_queue;
/* used by non-HDLC data transfers, i.e. telephony drivers */
lt->rx_queue = &chan->rx_queue;
/* used by HDLC data transfers, i.e. ipr and isp drivers */
lt->rx_mbuf = &chan->in_mbuf;
chan = &sc->sc_chan[HSCX_CH_B];
lt = &chan->isdn_linktab;
lt->unit = sc->sc_unit;
lt->channel = HSCX_CH_B;
lt->bch_config = avm_pnp_bchannel_setup;
lt->bch_tx_start = avm_pnp_bchannel_start;
lt->bch_stat = avm_pnp_bchannel_stat;
lt->tx_queue = &chan->tx_queue;
/* used by non-HDLC data transfers, i.e. telephony drivers */
lt->rx_queue = &chan->rx_queue;
/* used by HDLC data transfers, i.e. ipr and isp drivers */
lt->rx_mbuf = &chan->in_mbuf;
}
/*
* use this instead of isic_bchannel_stat in i4b_bchan.c because it's static
*/
static void
avm_pnp_bchannel_stat(int unit, int h_chan, bchan_statistics_t *bsp)
{
struct isic_softc *sc = &isic_sc[unit];
isic_Bchan_t *chan = &sc->sc_chan[h_chan];
int s;
s = SPLI4B();
bsp->outbytes = chan->txcount;
bsp->inbytes = chan->rxcount;
chan->txcount = 0;
chan->rxcount = 0;
splx(s);
}
/*---------------------------------------------------------------------------*
* fill HSCX fifo with data from the current mbuf
* Put this here until it can go into i4b_hscx.c
*---------------------------------------------------------------------------*/
static int
isic_hscx_fifo(isic_Bchan_t *chan, struct isic_softc *sc)
{
int len;
int nextlen;
int i;
/* using a scratch buffer simplifies writing to the FIFO */
u_char scrbuf[HSCX_FIFO_LEN];
len = 0;
/*
* fill the HSCX tx fifo with data from the current mbuf. if
* current mbuf holds less data than HSCX fifo length, try to
* get the next mbuf from (a possible) mbuf chain. if there is
* not enough data in a single mbuf or in a chain, then this
* is the last mbuf and we tell the HSCX that it has to send
* CRC and closing flag
*/
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=%p, mc=%p, mcp=%p, 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,
nextlen);
#endif
/* collect the data in the scratch buffer */
for (i = 0; i < nextlen; i++)
scrbuf[i + len] = chan->out_mbuf_cur_ptr[i];
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 = sc->sc_unit;
hdr.type = (chan->channel == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2);
hdr.dir = FROM_TE;
hdr.count = ++sc->sc_trace_bcount;
MICROTIME(hdr.time);
MPH_Trace_Ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data);
}
}
else
{
i4b_Bfreembuf(chan->out_mbuf_head);
chan->out_mbuf_head = NULL;
}
}
}
/* write what we have from the scratch buf to the HSCX fifo */
if (len != 0)
HSCX_WRFIFO(chan->channel, scrbuf, len);
return(0);
}
void
avm_pnp_intr(int unit)
{
struct isic_softc *sc;
u_char stat;
register u_char isac_irq_stat;
int was_isac = 0;
sc = &isic_sc[unit];
for(;;) {
stat = inb(sc->sc_port + STAT0_OFFSET);
DBGL1(L1_H_IRQ, "avm_pnp_intr", ("stat %x\n", stat));
/* was there an interrupt from this card ? */
if ((stat & ASL_IRQ_Pending) == ASL_IRQ_Pending)
break; /* no */
/* interrupts are low active */
if (!(stat & ASL_IRQ_TIMER))
DBGL1(L1_H_IRQ, "avm_pnp_intr", ("timer interrupt ???\n"));
if (!(stat & ASL_IRQ_ISAC))
{
DBGL1(L1_H_IRQ, "avm_pnp_intr", ("ISAC\n"));
isac_irq_stat = ISAC_READ(I_ISTA);
isic_isac_irq(sc, isac_irq_stat);
was_isac = 1;
}
if (!(stat & ASL_IRQ_HSCX))
{
DBGL1(L1_H_IRQ, "avm_pnp_intr", ("HSCX\n"));
avm_pnp_hscx_int_handler(sc);
}
}
if (was_isac) {
ISAC_WRITE(0x20, 0xFF);
ISAC_WRITE(0x20, 0x0);
}
}
#endif /* NISIC > 0 && defined(AVM_PNP) */
#endif /* FreeBSD */
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