2 * Copyright (c) 1999, 2000 Udo Schweigert. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 * 4. Altered versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software and/or documentation.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 *---------------------------------------------------------------------------
33 * i4b_ifpnp_avm.c: AVM Fritz!Card PnP hardware driver
34 * ---------------------------------------------------
36 * $FreeBSD: src/sys/i4b/layer1/ifpnp/i4b_ifpnp_avm.c,v 1.5.2.1 2001/08/10 14:08:37 obrien Exp $
37 * $DragonFly: src/sys/net/i4b/layer1/ifpnp/i4b_ifpnp_avm.c,v 1.8 2005/06/14 21:19:18 joerg Exp $
39 * last edit-date: [Fri Jan 12 17:05:28 2001]
41 *---------------------------------------------------------------------------*/
43 #include "use_ifpnp.h"
48 #include <sys/param.h>
49 #include <sys/kernel.h>
50 #include <sys/systm.h>
53 #include <machine/bus.h>
57 #include <bus/isa/isavar.h>
59 #include <sys/socket.h>
60 #include <sys/thread2.h>
63 #include <net/i4b/include/machine/i4b_debug.h>
64 #include <net/i4b/include/machine/i4b_ioctl.h>
65 #include <net/i4b/include/machine/i4b_trace.h>
67 #include "../../include/i4b_global.h"
68 #include "../../include/i4b_mbuf.h"
70 #include "../i4b_l1.h"
71 #include "../isic/i4b_isic.h"
72 #include "../isic/i4b_isac.h"
73 #include "../isic/i4b_hscx.h"
75 #include "i4b_ifpnp_ext.h"
78 static void avm_pnp_intr(void *);
79 static void hscx_write_reg(int, u_int, struct l1_softc *, u_int);
80 static void hscx_write_reg_val(int, u_int, u_int8_t, struct l1_softc *);
81 static u_int hscx_read_reg(int, u_int, struct l1_softc *);
82 static void hscx_read_fifo(int, void *, size_t, struct l1_softc *);
83 static void hscx_write_fifo(int, void *, size_t, struct l1_softc *);
84 static void avm_pnp_hscx_int_handler(struct l1_softc *);
85 static void avm_pnp_hscx_intr(int, u_int, u_int, struct l1_softc *);
86 static void avm_pnp_init_linktab(struct l1_softc *);
87 static void avm_pnp_bchannel_setup(int, int, int, int);
88 static void avm_pnp_bchannel_start(int, int);
89 static void avm_pnp_hscx_init(struct l1_softc *, int, int);
90 static void avm_pnp_bchannel_stat(int, int, bchan_statistics_t *);
91 static void avm_pnp_set_linktab(int, int, drvr_link_t *);
92 static isdn_link_t * avm_pnp_ret_linktab(int, int);
93 static int avm_pnp_probe(device_t);
94 static int avm_pnp_hscx_fifo(l1_bchan_state_t *, struct l1_softc *);
95 int avm_pnp_attach(device_t);
96 static void ifpnp_isac_intr(struct l1_softc *sc);
98 static device_method_t avm_pnp_methods[] = {
99 /* Device interface */
100 DEVMETHOD(device_probe, avm_pnp_probe),
101 DEVMETHOD(device_attach, avm_pnp_attach),
105 static driver_t avm_pnp_driver = {
108 sizeof(struct l1_softc)
111 static devclass_t avm_pnp_devclass;
113 DRIVER_MODULE(avm_pnp, isa, avm_pnp_driver, avm_pnp_devclass, 0, 0);
115 /* jump table for multiplex routines */
117 struct i4b_l1mux_func avm_pnp_l1mux_func = {
120 ifpnp_mph_command_req,
122 ifpnp_ph_activate_req,
125 struct l1_softc *ifpnp_scp[IFPNP_MAXUNIT];
127 /*---------------------------------------------------------------------------*
128 * AVM PnP Fritz!Card special registers
129 *---------------------------------------------------------------------------*/
132 * register offsets from i/o base
134 #define CLASS_OFFSET 0x00
135 #define REVISION_OFFSET 0x01
136 #define STAT0_OFFSET 0x02
137 #define STAT1_OFFSET 0x03
138 #define ADDR_REG_OFFSET 0x04
139 /*#define MODREG_OFFSET 0x06
140 #define VERREG_OFFSET 0x07*/
142 /* these 2 are used to select an ISAC register set */
143 #define ISAC_LO_REG_OFFSET 0x04
144 #define ISAC_HI_REG_OFFSET 0x06
146 /* offset higher than this goes to the HI register set */
147 #define MAX_LO_REG_OFFSET 0x2f
149 /* mask for the offset */
150 #define ISAC_REGSET_MASK 0x0f
152 /* the offset from the base to the ISAC registers */
153 #define ISAC_REG_OFFSET 0x10
155 /* the offset from the base to the ISAC FIFO */
156 #define ISAC_FIFO 0x02
158 /* not really the HSCX, but sort of */
159 #define HSCX_FIFO 0x00
160 #define HSCX_STAT 0x04
163 * AVM PnP Status Latch 0 read only bits
165 #define ASL_IRQ_ISAC 0x01 /* ISAC interrupt, active low */
166 #define ASL_IRQ_HSCX 0x02 /* HSX interrupt, active low */
167 #define ASL_IRQ_TIMER 0x04 /* Timer interrupt, active low */
168 #define ASL_IRQ_BCHAN ASL_IRQ_HSCX
169 /* actually active LOW */
170 #define ASL_IRQ_Pending (ASL_IRQ_ISAC | ASL_IRQ_HSCX | ASL_IRQ_TIMER)
173 * AVM Status Latch 0 write only bits
175 #define ASL_RESET_ALL 0x01 /* reset siemens IC's, active 1 */
176 #define ASL_TIMERDISABLE 0x02 /* active high */
177 #define ASL_TIMERRESET 0x04 /* active high */
178 #define ASL_ENABLE_INT 0x08 /* active high */
179 #define ASL_TESTBIT 0x10 /* active high */
182 * AVM Status Latch 1 write only bits
184 #define ASL1_INTSEL 0x0f /* active high */
185 #define ASL1_ENABLE_IOM 0x80 /* active high */
190 #define HSCX_MODE_ITF_FLG 0x01
191 #define HSCX_MODE_TRANS 0x02
192 #define HSCX_MODE_CCR_7 0x04
193 #define HSCX_MODE_CCR_16 0x08
194 #define HSCX_MODE_TESTLOOP 0x80
199 #define HSCX_STAT_RME 0x01
200 #define HSCX_STAT_RDO 0x10
201 #define HSCX_STAT_CRCVFRRAB 0x0E
202 #define HSCX_STAT_CRCVFR 0x06
203 #define HSCX_STAT_RML_MASK 0x3f00
206 * "HSCX" interrupt bits
208 #define HSCX_INT_XPR 0x80
209 #define HSCX_INT_XDU 0x40
210 #define HSCX_INT_RPR 0x20
211 #define HSCX_INT_MASK 0xE0
214 * "HSCX" command bits
216 #define HSCX_CMD_XRS 0x80
217 #define HSCX_CMD_XME 0x01
218 #define HSCX_CMD_RRS 0x20
219 #define HSCX_CMD_XML_MASK 0x3f00
222 * to prevent deactivating the "HSCX" when both channels are active we
223 * define an HSCX_ACTIVE flag which is or'd into the channel's state
224 * flag in avm_pnp_bchannel_setup upon active and cleared upon deactivation.
225 * It is set high to allow room for new flags.
227 #define HSCX_AVMA1PP_ACTIVE 0x1000
229 /*---------------------------------------------------------------------------*
230 * AVM read fifo routines
231 *---------------------------------------------------------------------------*/
234 avm_pnp_read_fifo(struct l1_softc *sc, int what, void *buf, size_t size)
236 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
237 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
241 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, ISAC_FIFO);
242 bus_space_read_multi_1(btag, bhandle, ISAC_REG_OFFSET, buf, size);
244 case ISIC_WHAT_HSCXA:
245 hscx_read_fifo(0, buf, size, sc);
247 case ISIC_WHAT_HSCXB:
248 hscx_read_fifo(1, buf, size, sc);
254 hscx_read_fifo(int chan, void *buf, size_t len, struct l1_softc *sc)
258 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
259 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
261 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, chan);
262 ip = (u_int8_t *)buf;
266 *ip++ = bus_space_read_1(btag, bhandle, ISAC_REG_OFFSET);
270 /*---------------------------------------------------------------------------*
271 * AVM write fifo routines
272 *---------------------------------------------------------------------------*/
274 avm_pnp_write_fifo(struct l1_softc *sc, int what, void *buf, size_t size)
276 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
277 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
281 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, ISAC_FIFO);
282 bus_space_write_multi_1(btag, bhandle, ISAC_REG_OFFSET, (u_int8_t*)buf, size);
284 case ISIC_WHAT_HSCXA:
285 hscx_write_fifo(0, buf, size, sc);
287 case ISIC_WHAT_HSCXB:
288 hscx_write_fifo(1, buf, size, sc);
294 hscx_write_fifo(int chan, void *buf, size_t len, struct l1_softc *sc)
298 l1_bchan_state_t *Bchan = &sc->sc_chan[chan];
299 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
300 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
302 sc->avma1pp_cmd &= ~HSCX_CMD_XME;
305 if (Bchan->out_mbuf_cur == NULL)
307 if (Bchan->bprot != BPROT_NONE)
308 sc->avma1pp_cmd |= HSCX_CMD_XME;
310 if (len != sc->sc_bfifolen)
311 sc->avma1pp_txl = len;
313 hscx_write_reg(chan, HSCX_STAT, sc, 3);
315 ip = (u_int8_t *)buf;
319 bus_space_write_1(btag, bhandle, ISAC_REG_OFFSET, *ip++);
323 /*---------------------------------------------------------------------------*
324 * AVM write register routines
325 *---------------------------------------------------------------------------*/
328 avm_pnp_write_reg(struct l1_softc *sc, int what, bus_size_t offs, u_int8_t data)
331 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
332 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
336 reg_bank = (offs > MAX_LO_REG_OFFSET) ? ISAC_HI_REG_OFFSET:ISAC_LO_REG_OFFSET;
337 /* set the register bank */
338 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, reg_bank);
339 bus_space_write_1(btag, bhandle, ISAC_REG_OFFSET + (offs & ISAC_REGSET_MASK), data);
341 case ISIC_WHAT_HSCXA:
342 hscx_write_reg_val(0, offs, data, sc);
344 case ISIC_WHAT_HSCXB:
345 hscx_write_reg_val(1, offs, data, sc);
351 hscx_write_reg(int chan, u_int off, struct l1_softc *sc, u_int which)
353 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
354 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
356 /* point at the correct channel */
357 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, chan);
359 bus_space_write_1(btag, bhandle, ISAC_REG_OFFSET + off + 2, sc->avma1pp_prot);
361 bus_space_write_1(btag, bhandle, ISAC_REG_OFFSET + off + 1, sc->avma1pp_txl);
363 bus_space_write_1(btag, bhandle, ISAC_REG_OFFSET + off, sc->avma1pp_cmd);
367 hscx_write_reg_val(int chan, u_int off, u_int8_t val, struct l1_softc *sc)
369 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
370 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
372 /* point at the correct channel */
373 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, chan);
374 bus_space_write_1(btag, bhandle, ISAC_REG_OFFSET + off, val);
377 /*---------------------------------------------------------------------------*
378 * AVM read register routines
379 *---------------------------------------------------------------------------*/
381 avm_pnp_read_reg(struct l1_softc *sc, int what, bus_size_t offs)
384 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
385 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
389 reg_bank = (offs > MAX_LO_REG_OFFSET) ? ISAC_HI_REG_OFFSET:ISAC_LO_REG_OFFSET;
390 /* set the register bank */
391 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, reg_bank);
392 return(bus_space_read_1(btag, bhandle, ISAC_REG_OFFSET +
393 (offs & ISAC_REGSET_MASK)));
394 case ISIC_WHAT_HSCXA:
395 return hscx_read_reg(0, offs, sc);
396 case ISIC_WHAT_HSCXB:
397 return hscx_read_reg(1, offs, sc);
403 hscx_read_reg(int chan, u_int off, struct l1_softc *sc)
405 bus_space_handle_t bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
406 bus_space_tag_t btag = rman_get_bustag(sc->sc_resources.io_base[0]);
408 /* point at the correct channel */
409 bus_space_write_1(btag, bhandle, ADDR_REG_OFFSET, chan);
410 return(bus_space_read_1(btag, bhandle, ISAC_REG_OFFSET + off));
414 static struct ifpnp_ids {
418 { 0x0009cd06, "AVM Fritz!Card PnP" },
422 /*---------------------------------------------------------------------------*
423 * avm_pnp_probe - probe for a card
424 *---------------------------------------------------------------------------*/
429 struct ifpnp_ids *ids; /* pnp id's */
430 char *string = NULL; /* the name */
431 u_int32_t vend_id = isa_get_vendorid(dev); /* vendor id */
433 /* search table of knowd id's */
435 for(ids = ifpnp_ids; ids->vend_id != 0; ids++)
437 if(vend_id == ids->vend_id)
439 string = ids->id_str;
444 if(string) /* set name if we have one */
446 device_set_desc(dev, string); /* set description */
455 /*---------------------------------------------------------------------------*
456 * avm_pnp_attach - attach Fritz!Card PnP
457 *---------------------------------------------------------------------------*/
459 avm_pnp_attach(device_t dev)
466 bus_space_handle_t bhandle;
467 bus_space_tag_t btag;
471 vid = isa_get_vendorid(dev);
472 sc = device_get_softc(dev);
473 unit = device_get_unit(dev);
474 bzero(sc, sizeof(struct l1_softc));
476 /* probably not really required */
477 if(unit > IFPNP_MAXUNIT) {
478 printf("avm_pnp%d: Error, unit > IFPNP_MAXUNIT!\n", unit);
483 ifpnp_scp[unit] = sc;
487 if(!(sc->sc_resources.io_base[0] =
488 bus_alloc_resource(dev, SYS_RES_IOPORT,
489 &sc->sc_resources.io_rid[0],
490 0UL, ~0UL, 1, RF_ACTIVE ) ))
492 printf("avm_pnp_attach: Couldn't get my io_base.\n");
495 if (sc->sc_resources.io_base[0] == NULL) {
496 printf("avm_pnp%d: couldn't map IO port\n", unit);
501 bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
502 btag = rman_get_bustag(sc->sc_resources.io_base[0]);
504 /* will not be used for pnp devices */
505 sc->sc_port = rman_get_start(sc->sc_resources.io_base[0]);
507 /* get irq, release io_base if we don't get it */
509 if(!(sc->sc_resources.irq =
510 bus_alloc_resource(dev, SYS_RES_IRQ,
511 &sc->sc_resources.irq_rid,
512 0UL, ~0UL, 1, RF_ACTIVE)))
514 printf("avm_pnp%d: Could not get irq.\n",unit);
520 sc->sc_irq = rman_get_start(sc->sc_resources.irq);
521 bus_setup_intr(dev, sc->sc_resources.irq, INTR_TYPE_NET,
522 (void(*)(void*))avm_pnp_intr, sc,
526 /* end of new-bus stuff */
528 ISAC_BASE = (caddr_t)ISIC_WHAT_ISAC;
530 HSCX_A_BASE = (caddr_t)ISIC_WHAT_HSCXA;
531 HSCX_B_BASE = (caddr_t)ISIC_WHAT_HSCXB;
533 /* setup access routines */
536 sc->readreg = avm_pnp_read_reg;
537 sc->writereg = avm_pnp_write_reg;
539 sc->readfifo = avm_pnp_read_fifo;
540 sc->writefifo = avm_pnp_write_fifo;
542 /* setup card type */
544 sc->sc_cardtyp = CARD_TYPEP_AVM_PNP;
546 /* setup IOM bus type */
548 sc->sc_bustyp = BUS_TYPE_IOM2;
550 /* set up some other miscellaneous things */
552 sc->sc_bfifolen = HSCX_FIFO_LEN;
555 /* the Linux driver does this to clear any pending ISAC interrupts */
557 v = ISAC_READ(I_STAR);
558 v = ISAC_READ(I_MODE);
559 v = ISAC_READ(I_ADF2);
560 v = ISAC_READ(I_ISTA);
561 if (v & ISAC_ISTA_EXI)
563 v = ISAC_READ(I_EXIR);
565 v = ISAC_READ(I_CIRR);
566 ISAC_WRITE(I_MASK, 0xff);
567 /* the Linux driver does this to clear any pending HSCX interrupts */
568 v = hscx_read_reg(0, HSCX_STAT, sc);
569 v = hscx_read_reg(1, HSCX_STAT, sc);
571 bus_space_write_1(btag, bhandle, STAT0_OFFSET, ASL_RESET_ALL|ASL_TIMERDISABLE);
572 DELAY(SEC_DELAY/100); /* 10 ms */
573 bus_space_write_1(btag, bhandle, STAT1_OFFSET, ASL1_ENABLE_IOM|sc->sc_irq);
574 DELAY(SEC_DELAY/100); /* 10 ms */
575 bus_space_write_1(btag, bhandle, STAT0_OFFSET, ASL_TIMERRESET|ASL_ENABLE_INT|ASL_TIMERDISABLE);
576 DELAY(SEC_DELAY/100); /* 10 ms */
578 printf("ifpnp%d: AVM Fritz!Card PnP Class %#x Revision %d \n", unit,
579 bus_space_read_1(btag, bhandle, CLASS_OFFSET),
580 bus_space_read_1(btag, bhandle, REVISION_OFFSET));
582 printf("ifpnp%d: ISAC %s (IOM-%c)\n", unit,
583 "2085 Version A1/A2 or 2086/2186 Version 1.1",
584 sc->sc_bustyp == BUS_TYPE_IOM1 ? '1' : '2');
590 /* init the "HSCX" */
591 avm_pnp_bchannel_setup(sc->sc_unit, HSCX_CH_A, BPROT_NONE, 0);
593 avm_pnp_bchannel_setup(sc->sc_unit, HSCX_CH_B, BPROT_NONE, 0);
595 /* can't use the normal B-Channel stuff */
596 avm_pnp_init_linktab(sc);
598 /* set trace level */
600 sc->sc_trace = TRACE_OFF;
602 sc->sc_state = ISAC_IDLE;
614 sc->sc_freeflag2 = 0;
616 callout_init(&sc->sc_T3_timeout);
617 callout_init(&sc->sc_T4_timeout);
619 /* init higher protocol layers */
621 i4b_l1_mph_status_ind(L0IFPNPUNIT(sc->sc_unit), STI_ATTACH, sc->sc_cardtyp, &avm_pnp_l1mux_func);
629 * this is the real interrupt routine
632 avm_pnp_hscx_intr(int h_chan, u_int stat, u_int cnt, struct l1_softc *sc)
634 l1_bchan_state_t *chan = &sc->sc_chan[h_chan];
637 NDBGL1(L1_H_IRQ, "%#x", stat);
639 if((stat & HSCX_INT_XDU) && (chan->bprot != BPROT_NONE))/* xmit data underrun */
642 NDBGL1(L1_H_XFRERR, "xmit data underrun");
643 /* abort the transmission */
645 sc->avma1pp_cmd |= HSCX_CMD_XRS;
646 hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
647 sc->avma1pp_cmd &= ~HSCX_CMD_XRS;
648 hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
650 if (chan->out_mbuf_head != NULL) /* don't continue to transmit this buffer */
652 i4b_Bfreembuf(chan->out_mbuf_head);
653 chan->out_mbuf_cur = chan->out_mbuf_head = NULL;
658 * The following is based on examination of the Linux driver.
660 * The logic here is different than with a "real" HSCX; all kinds
661 * of information (interrupt/status bits) are in stat.
662 * HSCX_INT_RPR indicates a receive interrupt
663 * HSCX_STAT_RDO indicates an overrun condition, abort -
664 * otherwise read the bytes ((stat & HSCX_STZT_RML_MASK) >> 8)
665 * HSCX_STAT_RME indicates end-of-frame and apparently any
666 * CRC/framing errors are only reported in this state.
667 * if ((stat & HSCX_STAT_CRCVFRRAB) != HSCX_STAT_CRCVFR)
671 if(stat & HSCX_INT_RPR)
675 /* always have to read the FIFO, so use a scratch buffer */
676 u_char scrbuf[HSCX_FIFO_LEN];
678 if(stat & HSCX_STAT_RDO)
681 NDBGL1(L1_H_XFRERR, "receive data overflow");
686 * check whether we're receiving data for an inactive B-channel
687 * and discard it. This appears to happen for telephony when
688 * both B-channels are active and one is deactivated. Since
689 * it is not really possible to deactivate the channel in that
690 * case (the ASIC seems to deactivate _both_ channels), the
691 * "deactivated" channel keeps receiving data which can lead
692 * to exhaustion of mbufs and a kernel panic.
694 * This is a hack, but it's the only solution I can think of
695 * without having the documentation for the ASIC.
698 if (chan->state == HSCX_IDLE)
700 NDBGL1(L1_H_XFRERR, "toss data from %d", h_chan);
706 if(fifo_data_len == 0)
707 fifo_data_len = sc->sc_bfifolen;
709 /* ALWAYS read data from HSCX fifo */
711 HSCX_RDFIFO(h_chan, scrbuf, fifo_data_len);
712 chan->rxcount += fifo_data_len;
714 /* all error conditions checked, now decide and take action */
718 if(chan->in_mbuf == NULL)
720 if((chan->in_mbuf = i4b_Bgetmbuf(BCH_MAX_DATALEN)) == NULL)
721 panic("L1 avm_pnp_hscx_intr: RME, cannot allocate mbuf!\n");
722 chan->in_cbptr = chan->in_mbuf->m_data;
726 if((chan->in_len + fifo_data_len) <= BCH_MAX_DATALEN)
728 /* OK to copy the data */
729 bcopy(scrbuf, chan->in_cbptr, fifo_data_len);
730 chan->in_cbptr += fifo_data_len;
731 chan->in_len += fifo_data_len;
733 /* setup mbuf data length */
735 chan->in_mbuf->m_len = chan->in_len;
736 chan->in_mbuf->m_pkthdr.len = chan->in_len;
738 if(sc->sc_trace & TRACE_B_RX)
741 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
742 hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2);
744 hdr.count = ++sc->sc_trace_bcount;
746 i4b_l1_trace_ind(&hdr, chan->in_mbuf->m_len, chan->in_mbuf->m_data);
749 if (stat & HSCX_STAT_RME)
751 if((stat & HSCX_STAT_CRCVFRRAB) == HSCX_STAT_CRCVFR)
753 (*chan->isic_drvr_linktab->bch_rx_data_ready)(chan->isic_drvr_linktab->unit);
756 /* mark buffer ptr as unused */
758 chan->in_mbuf = NULL;
759 chan->in_cbptr = NULL;
765 NDBGL1(L1_H_XFRERR, "CRC/RAB");
766 if (chan->in_mbuf != NULL)
768 i4b_Bfreembuf(chan->in_mbuf);
769 chan->in_mbuf = NULL;
770 chan->in_cbptr = NULL;
775 } /* END enough space in mbuf */
778 if(chan->bprot == BPROT_NONE)
780 /* setup mbuf data length */
782 chan->in_mbuf->m_len = chan->in_len;
783 chan->in_mbuf->m_pkthdr.len = chan->in_len;
785 if(sc->sc_trace & TRACE_B_RX)
788 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
789 hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2);
791 hdr.count = ++sc->sc_trace_bcount;
793 i4b_l1_trace_ind(&hdr, chan->in_mbuf->m_len, chan->in_mbuf->m_data);
796 if(!(i4b_l1_bchan_tel_silence(chan->in_mbuf->m_data, chan->in_mbuf->m_len)))
799 /* move rx'd data to rx queue */
800 if(!(IF_QFULL(&chan->rx_queue)))
802 IF_ENQUEUE(&chan->rx_queue, chan->in_mbuf);
806 i4b_Bfreembuf(chan->in_mbuf);
808 /* signal upper layer that data are available */
809 (*chan->isic_drvr_linktab->bch_rx_data_ready)(chan->isic_drvr_linktab->unit);
811 /* alloc new buffer */
813 if((chan->in_mbuf = i4b_Bgetmbuf(BCH_MAX_DATALEN)) == NULL)
814 panic("L1 avm_pnp_hscx_intr: RPF, cannot allocate new mbuf!\n");
816 /* setup new data ptr */
818 chan->in_cbptr = chan->in_mbuf->m_data;
820 /* OK to copy the data */
821 bcopy(scrbuf, chan->in_cbptr, fifo_data_len);
823 chan->in_cbptr += fifo_data_len;
824 chan->in_len = fifo_data_len;
826 chan->rxcount += fifo_data_len;
830 NDBGL1(L1_H_XFRERR, "RAWHDLC rx buffer overflow in RPF, in_len=%d", chan->in_len);
831 chan->in_cbptr = chan->in_mbuf->m_data;
835 } /* if(error == 0) */
838 /* land here for RDO */
839 if (chan->in_mbuf != NULL)
841 i4b_Bfreembuf(chan->in_mbuf);
842 chan->in_mbuf = NULL;
843 chan->in_cbptr = NULL;
847 sc->avma1pp_cmd |= HSCX_CMD_RRS;
848 hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
849 sc->avma1pp_cmd &= ~HSCX_CMD_RRS;
850 hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
855 /* transmit fifo empty, new data can be written to fifo */
857 if(stat & HSCX_INT_XPR)
860 * for a description what is going on here, please have
861 * a look at isic_bchannel_start() in i4b_bchan.c !
864 NDBGL1(L1_H_IRQ, "unit %d, chan %d - XPR, Tx Fifo Empty!", sc->sc_unit, h_chan);
866 if(chan->out_mbuf_cur == NULL) /* last frame is transmitted */
868 IF_DEQUEUE(&chan->tx_queue, chan->out_mbuf_head);
870 if(chan->out_mbuf_head == NULL)
872 chan->state &= ~HSCX_TX_ACTIVE;
873 (*chan->isic_drvr_linktab->bch_tx_queue_empty)(chan->isic_drvr_linktab->unit);
877 chan->state |= HSCX_TX_ACTIVE;
878 chan->out_mbuf_cur = chan->out_mbuf_head;
879 chan->out_mbuf_cur_ptr = chan->out_mbuf_cur->m_data;
880 chan->out_mbuf_cur_len = chan->out_mbuf_cur->m_len;
882 if(sc->sc_trace & TRACE_B_TX)
885 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
886 hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2);
888 hdr.count = ++sc->sc_trace_bcount;
890 i4b_l1_trace_ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data);
893 if(chan->bprot == BPROT_NONE)
895 if(!(i4b_l1_bchan_tel_silence(chan->out_mbuf_cur->m_data, chan->out_mbuf_cur->m_len)))
905 avm_pnp_hscx_fifo(chan, sc);
908 /* call timeout handling routine */
910 if(activity == ACT_RX || activity == ACT_TX)
911 (*chan->isic_drvr_linktab->bch_activity)(chan->isic_drvr_linktab->unit, activity);
915 * this is the main routine which checks each channel and then calls
916 * the real interrupt routine as appropriate
919 avm_pnp_hscx_int_handler(struct l1_softc *sc)
924 stat = hscx_read_reg(0, HSCX_STAT, sc);
925 if (stat & HSCX_INT_RPR)
926 cnt = hscx_read_reg(0, HSCX_STAT+1, sc);
927 if (stat & HSCX_INT_MASK)
928 avm_pnp_hscx_intr(0, stat, cnt, sc);
931 stat = hscx_read_reg(1, HSCX_STAT, sc);
932 if (stat & HSCX_INT_RPR)
933 cnt = hscx_read_reg(1, HSCX_STAT+1, sc);
934 if (stat & HSCX_INT_MASK)
935 avm_pnp_hscx_intr(1, stat, cnt, sc);
939 avm_pnp_intr(void *xsc)
943 bus_space_handle_t bhandle;
944 bus_space_tag_t btag;
947 bhandle = rman_get_bushandle(sc->sc_resources.io_base[0]);
948 btag = rman_get_bustag(sc->sc_resources.io_base[0]);
950 stat = bus_space_read_1(btag, bhandle, STAT0_OFFSET);
951 NDBGL1(L1_H_IRQ, "stat %x", stat);
952 /* was there an interrupt from this card ? */
953 if ((stat & ASL_IRQ_Pending) == ASL_IRQ_Pending)
955 /* interrupts are low active */
956 if (!(stat & ASL_IRQ_TIMER))
957 NDBGL1(L1_H_IRQ, "timer interrupt ???");
958 if (!(stat & ASL_IRQ_HSCX))
960 NDBGL1(L1_H_IRQ, "HSCX");
961 avm_pnp_hscx_int_handler(sc);
963 if (!(stat & ASL_IRQ_ISAC))
965 NDBGL1(L1_H_IRQ, "ISAC");
971 avm_pnp_hscx_init(struct l1_softc *sc, int h_chan, int activate)
973 l1_bchan_state_t *chan = &sc->sc_chan[h_chan];
975 NDBGL1(L1_BCHAN, "unit=%d, channel=%d, %s",
976 sc->sc_unit, h_chan, activate ? "activate" : "deactivate");
980 /* only deactivate if both channels are idle */
981 if (sc->sc_chan[HSCX_CH_A].state != HSCX_IDLE ||
982 sc->sc_chan[HSCX_CH_B].state != HSCX_IDLE)
986 sc->avma1pp_cmd = HSCX_CMD_XRS|HSCX_CMD_RRS;
987 sc->avma1pp_prot = HSCX_MODE_TRANS;
988 hscx_write_reg(h_chan, HSCX_STAT, sc, 5);
991 if(chan->bprot == BPROT_RHDLC)
993 NDBGL1(L1_BCHAN, "BPROT_RHDLC");
995 /* HDLC Frames, transparent mode 0 */
996 sc->avma1pp_cmd = HSCX_CMD_XRS|HSCX_CMD_RRS;
997 sc->avma1pp_prot = HSCX_MODE_ITF_FLG;
998 hscx_write_reg(h_chan, HSCX_STAT, sc, 5);
999 sc->avma1pp_cmd = HSCX_CMD_XRS;
1000 hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
1001 sc->avma1pp_cmd = 0;
1005 NDBGL1(L1_BCHAN, "BPROT_NONE??");
1007 /* Raw Telephony, extended transparent mode 1 */
1008 sc->avma1pp_cmd = HSCX_CMD_XRS|HSCX_CMD_RRS;
1009 sc->avma1pp_prot = HSCX_MODE_TRANS;
1010 hscx_write_reg(h_chan, HSCX_STAT, sc, 5);
1011 sc->avma1pp_cmd = HSCX_CMD_XRS;
1012 hscx_write_reg(h_chan, HSCX_STAT, sc, 1);
1013 sc->avma1pp_cmd = 0;
1018 avm_pnp_bchannel_setup(int unit, int h_chan, int bprot, int activate)
1020 struct l1_softc *sc = ifpnp_scp[unit];
1021 l1_bchan_state_t *chan = &sc->sc_chan[h_chan];
1028 chan->state = HSCX_IDLE;
1029 avm_pnp_hscx_init(sc, h_chan, activate);
1032 NDBGL1(L1_BCHAN, "unit=%d, channel=%d, %s",
1033 sc->sc_unit, h_chan, activate ? "activate" : "deactivate");
1037 chan->unit = sc->sc_unit; /* unit number */
1038 chan->channel = h_chan; /* B channel */
1039 chan->bprot = bprot; /* B channel protocol */
1040 chan->state = HSCX_IDLE; /* B channel state */
1044 chan->rx_queue.ifq_maxlen = IFQ_MAXLEN;
1046 i4b_Bcleanifq(&chan->rx_queue); /* clean rx queue */
1048 chan->rxcount = 0; /* reset rx counter */
1050 i4b_Bfreembuf(chan->in_mbuf); /* clean rx mbuf */
1052 chan->in_mbuf = NULL; /* reset mbuf ptr */
1053 chan->in_cbptr = NULL; /* reset mbuf curr ptr */
1054 chan->in_len = 0; /* reset mbuf data len */
1056 /* transmitter part */
1058 chan->tx_queue.ifq_maxlen = IFQ_MAXLEN;
1060 i4b_Bcleanifq(&chan->tx_queue); /* clean tx queue */
1062 chan->txcount = 0; /* reset tx counter */
1064 i4b_Bfreembuf(chan->out_mbuf_head); /* clean tx mbuf */
1066 chan->out_mbuf_head = NULL; /* reset head mbuf ptr */
1067 chan->out_mbuf_cur = NULL; /* reset current mbuf ptr */
1068 chan->out_mbuf_cur_ptr = NULL; /* reset current mbuf data ptr */
1069 chan->out_mbuf_cur_len = 0; /* reset current mbuf data cnt */
1074 avm_pnp_hscx_init(sc, h_chan, activate);
1075 chan->state |= HSCX_AVMA1PP_ACTIVE;
1082 avm_pnp_bchannel_start(int unit, int h_chan)
1084 struct l1_softc *sc = ifpnp_scp[unit];
1085 l1_bchan_state_t *chan = &sc->sc_chan[h_chan];
1089 if(chan->state & HSCX_TX_ACTIVE) /* already running ? */
1092 return; /* yes, leave */
1095 /* get next mbuf from queue */
1097 IF_DEQUEUE(&chan->tx_queue, chan->out_mbuf_head);
1099 if(chan->out_mbuf_head == NULL) /* queue empty ? */
1102 return; /* yes, exit */
1105 /* init current mbuf values */
1107 chan->out_mbuf_cur = chan->out_mbuf_head;
1108 chan->out_mbuf_cur_len = chan->out_mbuf_cur->m_len;
1109 chan->out_mbuf_cur_ptr = chan->out_mbuf_cur->m_data;
1111 /* activity indicator for timeout handling */
1113 if(chan->bprot == BPROT_NONE)
1115 if(!(i4b_l1_bchan_tel_silence(chan->out_mbuf_cur->m_data, chan->out_mbuf_cur->m_len)))
1123 chan->state |= HSCX_TX_ACTIVE; /* we start transmitting */
1125 if(sc->sc_trace & TRACE_B_TX) /* if trace, send mbuf to trace dev */
1127 i4b_trace_hdr_t hdr;
1128 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
1129 hdr.type = (h_chan == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2);
1131 hdr.count = ++sc->sc_trace_bcount;
1132 MICROTIME(hdr.time);
1133 i4b_l1_trace_ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data);
1136 avm_pnp_hscx_fifo(chan, sc);
1138 /* call timeout handling routine */
1140 if(activity == ACT_RX || activity == ACT_TX)
1141 (*chan->isic_drvr_linktab->bch_activity)(chan->isic_drvr_linktab->unit, activity);
1146 /*---------------------------------------------------------------------------*
1147 * return the address of isic drivers linktab
1148 *---------------------------------------------------------------------------*/
1149 static isdn_link_t *
1150 avm_pnp_ret_linktab(int unit, int channel)
1152 struct l1_softc *sc = ifpnp_scp[unit];
1153 l1_bchan_state_t *chan = &sc->sc_chan[channel];
1155 return(&chan->isic_isdn_linktab);
1158 /*---------------------------------------------------------------------------*
1159 * set the driver linktab in the b channel softc
1160 *---------------------------------------------------------------------------*/
1162 avm_pnp_set_linktab(int unit, int channel, drvr_link_t *dlt)
1164 struct l1_softc *sc = ifpnp_scp[unit];
1165 l1_bchan_state_t *chan = &sc->sc_chan[channel];
1167 chan->isic_drvr_linktab = dlt;
1171 /*---------------------------------------------------------------------------*
1172 * initialize our local linktab
1173 *---------------------------------------------------------------------------*/
1175 avm_pnp_init_linktab(struct l1_softc *sc)
1177 l1_bchan_state_t *chan = &sc->sc_chan[HSCX_CH_A];
1178 isdn_link_t *lt = &chan->isic_isdn_linktab;
1180 /* make sure the hardware driver is known to layer 4 */
1181 /* avoid overwriting if already set */
1182 if (ctrl_types[CTRL_PASSIVE].set_linktab == NULL)
1184 ctrl_types[CTRL_PASSIVE].set_linktab = avm_pnp_set_linktab;
1185 ctrl_types[CTRL_PASSIVE].get_linktab = avm_pnp_ret_linktab;
1189 lt->unit = sc->sc_unit;
1190 lt->channel = HSCX_CH_A;
1191 lt->bch_config = avm_pnp_bchannel_setup;
1192 lt->bch_tx_start = avm_pnp_bchannel_start;
1193 lt->bch_stat = avm_pnp_bchannel_stat;
1194 lt->tx_queue = &chan->tx_queue;
1196 /* used by non-HDLC data transfers, i.e. telephony drivers */
1197 lt->rx_queue = &chan->rx_queue;
1199 /* used by HDLC data transfers, i.e. ipr and isp drivers */
1200 lt->rx_mbuf = &chan->in_mbuf;
1202 chan = &sc->sc_chan[HSCX_CH_B];
1203 lt = &chan->isic_isdn_linktab;
1205 lt->unit = sc->sc_unit;
1206 lt->channel = HSCX_CH_B;
1207 lt->bch_config = avm_pnp_bchannel_setup;
1208 lt->bch_tx_start = avm_pnp_bchannel_start;
1209 lt->bch_stat = avm_pnp_bchannel_stat;
1210 lt->tx_queue = &chan->tx_queue;
1212 /* used by non-HDLC data transfers, i.e. telephony drivers */
1213 lt->rx_queue = &chan->rx_queue;
1215 /* used by HDLC data transfers, i.e. ipr and isp drivers */
1216 lt->rx_mbuf = &chan->in_mbuf;
1220 * use this instead of isic_bchannel_stat in i4b_bchan.c because it's static
1223 avm_pnp_bchannel_stat(int unit, int h_chan, bchan_statistics_t *bsp)
1225 struct l1_softc *sc = ifpnp_scp[unit];
1226 l1_bchan_state_t *chan = &sc->sc_chan[h_chan];
1230 bsp->outbytes = chan->txcount;
1231 bsp->inbytes = chan->rxcount;
1239 /*---------------------------------------------------------------------------*
1240 * fill HSCX fifo with data from the current mbuf
1241 * Put this here until it can go into i4b_hscx.c
1242 *---------------------------------------------------------------------------*/
1244 avm_pnp_hscx_fifo(l1_bchan_state_t *chan, struct l1_softc *sc)
1250 /* using a scratch buffer simplifies writing to the FIFO */
1251 u_char scrbuf[HSCX_FIFO_LEN];
1256 * fill the HSCX tx fifo with data from the current mbuf. if
1257 * current mbuf holds less data than HSCX fifo length, try to
1258 * get the next mbuf from (a possible) mbuf chain. if there is
1259 * not enough data in a single mbuf or in a chain, then this
1260 * is the last mbuf and we tell the HSCX that it has to send
1261 * CRC and closing flag
1264 while(chan->out_mbuf_cur && len != sc->sc_bfifolen)
1266 nextlen = min(chan->out_mbuf_cur_len, sc->sc_bfifolen - len);
1269 printf("i:mh=%p, mc=%p, mcp=%p, mcl=%d l=%d nl=%d # ",
1270 chan->out_mbuf_head,
1272 chan->out_mbuf_cur_ptr,
1273 chan->out_mbuf_cur_len,
1278 cmd |= HSCX_CMDR_XTF;
1279 /* collect the data in the scratch buffer */
1280 for (i = 0; i < nextlen; i++)
1281 scrbuf[i + len] = chan->out_mbuf_cur_ptr[i];
1284 chan->txcount += nextlen;
1286 chan->out_mbuf_cur_ptr += nextlen;
1287 chan->out_mbuf_cur_len -= nextlen;
1289 if(chan->out_mbuf_cur_len == 0)
1291 if((chan->out_mbuf_cur = chan->out_mbuf_cur->m_next) != NULL)
1293 chan->out_mbuf_cur_ptr = chan->out_mbuf_cur->m_data;
1294 chan->out_mbuf_cur_len = chan->out_mbuf_cur->m_len;
1296 if(sc->sc_trace & TRACE_B_TX)
1298 i4b_trace_hdr_t hdr;
1299 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
1300 hdr.type = (chan->channel == HSCX_CH_A ? TRC_CH_B1 : TRC_CH_B2);
1302 hdr.count = ++sc->sc_trace_bcount;
1303 MICROTIME(hdr.time);
1304 i4b_l1_trace_ind(&hdr, chan->out_mbuf_cur->m_len, chan->out_mbuf_cur->m_data);
1309 if (chan->bprot != BPROT_NONE)
1310 cmd |= HSCX_CMDR_XME;
1311 i4b_Bfreembuf(chan->out_mbuf_head);
1312 chan->out_mbuf_head = NULL;
1316 /* write what we have from the scratch buf to the HSCX fifo */
1318 HSCX_WRFIFO(chan->channel, scrbuf, len);
1322 /*---------------------------------------------------------------------------*
1323 * ifpnp - ISAC interrupt routine
1324 *---------------------------------------------------------------------------*/
1326 ifpnp_isac_intr(struct l1_softc *sc)
1328 u_char isac_irq_stat;
1332 /* get isac irq status */
1333 isac_irq_stat = ISAC_READ(I_ISTA);
1336 ifpnp_isac_irq(sc, isac_irq_stat); /* isac handler */
1341 ISAC_WRITE(I_MASK, 0xff);
1345 ISAC_WRITE(I_MASK, ISAC_IMASK);
1348 /*---------------------------------------------------------------------------*
1349 * ifpnp_recover - try to recover from irq lockup
1350 *---------------------------------------------------------------------------*/
1352 ifpnp_recover(struct l1_softc *sc)
1356 /* get isac irq status */
1358 byte = ISAC_READ(I_ISTA);
1360 NDBGL1(L1_ERROR, " ISAC: ISTA = 0x%x", byte);
1362 if(byte & ISAC_ISTA_EXI)
1363 NDBGL1(L1_ERROR, " ISAC: EXIR = 0x%x", (u_char)ISAC_READ(I_EXIR));
1365 if(byte & ISAC_ISTA_CISQ)
1367 byte = ISAC_READ(I_CIRR);
1369 NDBGL1(L1_ERROR, " ISAC: CISQ = 0x%x", byte);
1371 if(byte & ISAC_CIRR_SQC)
1372 NDBGL1(L1_ERROR, " ISAC: SQRR = 0x%x", (u_char)ISAC_READ(I_SQRR));
1375 NDBGL1(L1_ERROR, " ISAC: IMASK = 0x%x", ISAC_IMASK);
1377 ISAC_WRITE(I_MASK, 0xff);
1379 ISAC_WRITE(I_MASK, ISAC_IMASK);
1382 #endif /* NIFPNP > 0 */