2 * Copyright (c) 2000, 2001 Hellmuth Michaelis. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 *---------------------------------------------------------------------------
27 * i4b_l1dmux.c - isdn4bsd layer 1 driver multiplexer
28 * --------------------------------------------------
30 * $FreeBSD: src/sys/i4b/layer1/i4b_l1dmux.c,v 1.3.2.2 2002/04/25 12:29:55 gj Exp $
32 * last edit-date: [Wed Jan 10 16:43:24 2001]
34 *---------------------------------------------------------------------------*/
44 #include <sys/param.h>
45 #include <sys/systm.h>
47 #include <machine/i4b_debug.h>
48 #include <machine/i4b_ioctl.h>
49 #include <machine/i4b_trace.h>
51 #include <i4b/layer1/i4b_l1.h>
53 #include <i4b/include/i4b_l1l2.h>
54 #include <i4b/include/i4b_global.h>
57 * this code is nothing but a big dynamic switch to multiplex and demultiplex
58 * layer 1 hardware isdn drivers to a common layer 2.
60 * when a card is successfully attached at system boot time, the driver for
61 * this card calls the routine i4b_l1_mph_status_ind() with status = STI_ATTACH.
63 * This command is used to setup the tables for converting a "driver unit" and
64 * "driver type" pair (encoded in the calls from the hardware driver to the
65 * routines in this source file) to a "unit number" used in layer 2 and the
66 * layers above (up to and including the isdnd daemon) and for converting
67 * layer 2 units back to calling the appropriate driver and driver unit
70 * Example: in my setup, a Winbond (iwic) card is probed first and gets
71 * driver unit number 0, driver type 1 in layer 1. This becomes unit
72 * number 0 in layer 2 and up. The second card probed is a Teles card
73 * (isic) and gets driver unit number 0, driver type 0 in layer 1. This
74 * becomes unit number 1 in layer 1 and up.
76 * To add support for a new driver, add a new driver number to i4b_l1.h:
77 * currently we have L1DRVR_ISIC and L1DRVR_IWIC, so you would add
78 * L1DRVR_FOO. More you would want to add a L0FOOUNIT to encode unit
79 * numbers in your driver. You then have to add a l1foounittab[] and
80 * add an entry to the getl1tab() routine for your driver. The only
81 * thing left now is to write your driver with the support functions
82 * for this multiplexer ;-)
85 unsigned int i4b_l1_debug = L1_DEBUG_DEFAULT;
88 static int l1isicunittab[MAXL1UNITS];
92 static int l1iwicunittab[MAXL1UNITS];
96 static int l1ifpiunittab[MAXL1UNITS];
100 static int l1ifpi2unittab[MAXL1UNITS];
104 static int l1ihfcunittab[MAXL1UNITS];
108 static int l1ifpnpunittab[MAXL1UNITS];
112 static int l1itjcunittab[MAXL1UNITS];
115 static int numl1units = 0;
117 static int l1drvunittab[MAXL1UNITS];
118 static struct i4b_l1mux_func *l1mux_func[MAXL1DRVR];
120 static int i4b_l1_ph_data_req(int, struct mbuf *, int);
121 static int i4b_l1_ph_activate_req(int);
123 /* from i4btrc driver i4b_trace.c */
124 int get_trace_data_from_l1(int unit, int what, int len, char *buf);
127 int i4b_ph_data_ind(int unit, struct mbuf *m);
128 int i4b_ph_activate_ind(int unit);
129 int i4b_ph_deactivate_ind(int unit);
130 int i4b_mph_status_ind(int, int, int);
133 int i4b_l1_mph_command_req(int, int, void *);
135 /*---------------------------------------------------------------------------*
136 * jump table: interface function pointers L1/L2 interface
137 *---------------------------------------------------------------------------*/
138 struct i4b_l1l2_func i4b_l1l2_func = {
140 /* Layer 1 --> Layer 2 */
142 (int (*)(int, struct mbuf *)) i4b_ph_data_ind,
143 (int (*)(int)) i4b_ph_activate_ind,
144 (int (*)(int)) i4b_ph_deactivate_ind,
146 /* Layer 2 --> Layer 1 */
148 (int (*)(int, struct mbuf *, int)) i4b_l1_ph_data_req,
150 (int (*)(int)) i4b_l1_ph_activate_req,
152 /* Layer 1 --> trace interface driver, ISDN trace data */
154 (int (*)(i4b_trace_hdr_t *, int, u_char *)) get_trace_data_from_l1,
156 /* Driver control and status information */
158 (int (*)(int, int, int)) i4b_mph_status_ind,
159 (int (*)(int, int, void *)) i4b_l1_mph_command_req,
162 /*---------------------------------------------------------------------------*
163 * return a pointer to a layer 0 drivers unit tab
164 *---------------------------------------------------------------------------*/
165 static __inline int *
172 return(l1isicunittab);
177 return(l1iwicunittab);
182 return(l1ifpiunittab);
187 return(l1ifpi2unittab);
192 return(l1ihfcunittab);
197 return(l1ifpnpunittab);
202 return(l1itjcunittab);
211 /*===========================================================================*
212 * B - Channel (data transfer)
213 *===========================================================================*/
215 /*---------------------------------------------------------------------------*
216 * return the address of ISDN drivers linktab
217 *---------------------------------------------------------------------------*/
219 i4b_l1_ret_linktab(int unit, int channel)
221 int drv_unit, ch_unit;
223 drv_unit = L0DRVR(l1drvunittab[unit]);
224 ch_unit = L0UNIT(l1drvunittab[unit]);
226 NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
228 if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
229 || l1mux_func[drv_unit]->ret_linktab == NULL)
230 panic("i4b_l1_ret_linktab: unknown driver type %d\n", drv_unit);
232 return(l1mux_func[drv_unit]->ret_linktab(ch_unit, channel));
235 /*---------------------------------------------------------------------------*
236 * set the ISDN driver linktab
237 *---------------------------------------------------------------------------*/
239 i4b_l1_set_linktab(int unit, int channel, drvr_link_t *dlt)
241 int drv_unit, ch_unit;
243 drv_unit = L0DRVR(l1drvunittab[unit]);
244 ch_unit = L0UNIT(l1drvunittab[unit]);
246 NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
248 if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
249 || l1mux_func[drv_unit]->set_linktab == NULL)
250 panic("i4b_l1_set_linktab: unknown driver type %d\n", drv_unit);
252 l1mux_func[drv_unit]->set_linktab(ch_unit, channel, dlt);
255 /*===========================================================================*
256 * trace D- and B-Channel support
257 *===========================================================================*/
259 /*---------------------------------------------------------------------------*
260 * L0 -> L1 trace information to trace driver
261 *---------------------------------------------------------------------------*/
263 i4b_l1_trace_ind(i4b_trace_hdr_t *hdr, int len, u_char *data)
267 if((tab = getl1tab(L0DRVR(hdr->unit))) == NULL)
268 panic("i4b_l1_trace_ind: unknown driver type %d\n", L0DRVR(hdr->unit));
270 NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(hdr->unit), L0UNIT(hdr->unit), tab[L0UNIT(hdr->unit)]);
272 hdr->unit = tab[L0UNIT(hdr->unit)];
274 return(MPH_Trace_Ind(hdr, len, data));
277 /*===========================================================================*
278 * D - Channel (signalling)
279 *===========================================================================*/
281 /*---------------------------------------------------------------------------*
282 * L0 -> L1 status indication from hardware
283 *---------------------------------------------------------------------------*/
285 i4b_l1_mph_status_ind(int drv_unit, int status, int parm, struct i4b_l1mux_func *l1mux_func_p)
290 * in case the status STI_ATTACH is sent from the hardware, the
291 * driver has just attached itself and we need to initialize
292 * the tables and assorted variables.
295 if(status == STI_ATTACH)
297 if (l1mux_func_p == (struct i4b_l1mux_func *)0)
298 panic("i4b_l1_mph_status_ind: i4b_l1mux_func pointer is NULL\n");
300 if(numl1units < MAXL1UNITS)
302 if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
303 panic("i4b_l1_mph_status_ind: unknown driver type %d\n", L0DRVR(drv_unit));
305 tab[L0UNIT(drv_unit)] = numl1units;
307 l1drvunittab[numl1units] = drv_unit;
309 l1mux_func[L0DRVR(drv_unit)] = l1mux_func_p;
311 switch(L0DRVR(drv_unit))
315 printf("isic%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
320 printf("iwic%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
325 printf("ifpi%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
330 printf("ifpi2-%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
335 printf("ifpnp%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
340 printf("ihfc%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
345 printf("itjc%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
350 NDBGL1(L1_PRIM, "ATTACH drv %d, drvunit %d -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), numl1units);
356 if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
357 panic("i4b_l1_mph_status_ind: unknown driver type %d\n", L0DRVR(drv_unit));
359 NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d\n", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
361 return(MPH_Status_Ind(tab[L0UNIT(drv_unit)], status, parm));
364 /*---------------------------------------------------------------------------*
365 * L0 -> L1 data from hardware
366 *---------------------------------------------------------------------------*/
368 i4b_l1_ph_data_ind(int drv_unit, struct mbuf *data)
372 if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
373 panic("i4b_l1_ph_data_ind: unknown driver type %d\n", L0DRVR(drv_unit));
376 NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
379 return(PH_Data_Ind(tab[L0UNIT(drv_unit)], data));
382 /*---------------------------------------------------------------------------*
383 * L0 -> L1 activate indication from hardware
384 *---------------------------------------------------------------------------*/
386 i4b_l1_ph_activate_ind(int drv_unit)
390 if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
391 panic("i4b_l1_ph_activate_ind: unknown driver type %d\n", L0DRVR(drv_unit));
393 NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
395 return(PH_Act_Ind(tab[L0UNIT(drv_unit)]));
398 /*---------------------------------------------------------------------------*
399 * L0 -> L1 deactivate indication from hardware
400 *---------------------------------------------------------------------------*/
402 i4b_l1_ph_deactivate_ind(int drv_unit)
406 if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
407 panic("i4b_l1_ph_deactivate_ind: unknown driver type %d\n", L0DRVR(drv_unit));
409 NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
411 return(PH_Deact_Ind(tab[L0UNIT(drv_unit)]));
414 /*---------------------------------------------------------------------------*
415 * L2 -> L1 command to hardware
416 *---------------------------------------------------------------------------*/
418 i4b_l1_mph_command_req(int unit, int command, void * parm)
420 register int drv_unit = L0DRVR(l1drvunittab[unit]);
421 register int ch_unit = L0UNIT(l1drvunittab[unit]);
423 NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
425 if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
426 || l1mux_func[drv_unit]->mph_command_req == NULL)
427 panic("i4b_l1_mph_command_req: unknown driver type %d\n", drv_unit);
429 return(l1mux_func[drv_unit]->mph_command_req(ch_unit, command, parm));
432 /*---------------------------------------------------------------------------*
433 * L2 -> L1 data to be transmitted to hardware
434 *---------------------------------------------------------------------------*/
436 i4b_l1_ph_data_req(int unit, struct mbuf *data, int flag)
438 register int drv_unit = L0DRVR(l1drvunittab[unit]);
439 register int ch_unit = L0UNIT(l1drvunittab[unit]);
442 NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
445 if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
446 || l1mux_func[drv_unit]->ph_data_req == NULL)
447 panic("i4b_l1_ph_data_req: unknown driver type %d\n", drv_unit);
449 return(l1mux_func[drv_unit]->ph_data_req(ch_unit, data, flag));
452 /*---------------------------------------------------------------------------*
453 * L2 -> L1 activate request to hardware
454 *---------------------------------------------------------------------------*/
456 i4b_l1_ph_activate_req(int unit)
458 register int drv_unit = L0DRVR(l1drvunittab[unit]);
459 register int ch_unit = L0UNIT(l1drvunittab[unit]);
461 NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
463 if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
464 || l1mux_func[drv_unit]->ph_activate_req == NULL)
465 panic("i4b_l1_ph_activate_req: unknown driver type %d\n", drv_unit);
467 return(l1mux_func[drv_unit]->ph_activate_req(ch_unit));