1/* $NetBSD: isic_l1.c,v 1.17 2007/10/19 11:59:54 ad Exp $ */ 2 3/* 4 * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29#include <sys/cdefs.h> 30__KERNEL_RCSID(0, "$NetBSD: isic_l1.c,v 1.17 2007/10/19 11:59:54 ad Exp $"); 31 32#include <sys/param.h> 33#include <sys/ioctl.h> 34#include <sys/kernel.h> 35#include <sys/systm.h> 36#include <sys/mbuf.h> 37 38#include <sys/bus.h> 39#include <sys/device.h> 40 41#include <sys/socket.h> 42#include <net/if.h> 43 44#include <sys/callout.h> 45 46#include <netisdn/i4b_debug.h> 47#include <netisdn/i4b_ioctl.h> 48#include <netisdn/i4b_trace.h> 49 50#include <netisdn/i4b_l2.h> 51#include <netisdn/i4b_l1l2.h> 52#include <netisdn/i4b_mbuf.h> 53#include <netisdn/i4b_global.h> 54 55#include <dev/ic/isic_l1.h> 56#include <dev/ic/isac.h> 57#include <dev/ic/ipac.h> 58#include <dev/ic/hscx.h> 59 60#include "nisac.h" 61#include "nisacsx.h" 62 63unsigned int i4b_l1_debug = L1_DEBUG_DEFAULT; 64 65static int isic_std_ph_data_req(isdn_layer1token, struct mbuf *, int); 66static int isic_std_ph_activate_req(isdn_layer1token); 67static int isic_std_mph_command_req(isdn_layer1token, int, void*); 68static void isic_enable_intr(struct isic_softc *sc, int enable); 69 70const struct isdn_layer1_isdnif_driver isic_std_driver = { 71 isic_std_ph_data_req, 72 isic_std_ph_activate_req, 73 isic_std_mph_command_req 74}; 75 76/* from i4btrc driver i4b_trace.c */ 77extern int get_trace_data_from_l1(int unit, int what, int len, char *buf); 78 79/*---------------------------------------------------------------------------* 80 * 81 * L2 -> L1: PH-DATA-REQUEST 82 * ========================= 83 * 84 * parms: 85 * token softc of physical driver 86 * m mbuf containing L2 frame to be sent out 87 * freeflag MBUF_FREE: free mbuf here after having sent 88 * it out 89 * MBUF_DONTFREE: mbuf is freed by Layer 2 90 * returns: 91 * ==0 fail, nothing sent out 92 * !=0 ok, frame sent out 93 * 94 *---------------------------------------------------------------------------*/ 95static int 96isic_std_ph_data_req(isdn_layer1token token, struct mbuf *m, int freeflag) 97{ 98 struct isic_softc *sc = (struct isic_softc*)token; 99 u_char cmd; 100 int s; 101 102 if (m == NULL) /* failsafe */ 103 return (0); 104 105 s = splnet(); 106 107 if(sc->sc_I430state == ST_F3) /* layer 1 not running ? */ 108 { 109 NDBGL1(L1_I_ERR, "still in state F3!"); 110 isic_std_ph_activate_req(token); 111 } 112 113 if(sc->sc_state & ISAC_TX_ACTIVE) 114 { 115 if(sc->sc_obuf2 == NULL) 116 { 117 sc->sc_obuf2 = m; /* save mbuf ptr */ 118 119 if(freeflag) 120 sc->sc_freeflag2 = 1; /* IRQ must mfree */ 121 else 122 sc->sc_freeflag2 = 0; /* IRQ must not mfree */ 123 124 NDBGL1(L1_I_MSG, "using 2nd ISAC TX buffer, state = %s", isic_printstate(sc)); 125 126 if(sc->sc_trace & TRACE_D_TX) 127 { 128 i4b_trace_hdr hdr; 129 hdr.type = TRC_CH_D; 130 hdr.dir = FROM_TE; 131 hdr.count = ++sc->sc_trace_dcount; 132 isdn_layer2_trace_ind(&sc->sc_l2, sc->sc_l3token, &hdr, m->m_len, m->m_data); 133 } 134 splx(s); 135 return(1); 136 } 137 138 NDBGL1(L1_I_ERR, "No Space in TX FIFO, state = %s", isic_printstate(sc)); 139 140 if(freeflag == MBUF_FREE) 141 i4b_Dfreembuf(m); 142 143 splx(s); 144 return (0); 145 } 146 147 if(sc->sc_trace & TRACE_D_TX) 148 { 149 i4b_trace_hdr hdr; 150 hdr.type = TRC_CH_D; 151 hdr.dir = FROM_TE; 152 hdr.count = ++sc->sc_trace_dcount; 153 isdn_layer2_trace_ind(&sc->sc_l2, sc->sc_l3token, &hdr, m->m_len, m->m_data); 154 } 155 156 sc->sc_state |= ISAC_TX_ACTIVE; /* set transmitter busy flag */ 157 158 NDBGL1(L1_I_MSG, "ISAC_TX_ACTIVE set"); 159 160 sc->sc_freeflag = 0; /* IRQ must NOT mfree */ 161 162 ISAC_WRFIFO(m->m_data, min(m->m_len, ISAC_FIFO_LEN)); /* output to TX fifo */ 163 164 if(m->m_len > ISAC_FIFO_LEN) /* message > 32 bytes ? */ 165 { 166 sc->sc_obuf = m; /* save mbuf ptr */ 167 sc->sc_op = m->m_data + ISAC_FIFO_LEN; /* ptr for irq hdl */ 168 sc->sc_ol = m->m_len - ISAC_FIFO_LEN; /* length for irq hdl */ 169 170 if(freeflag) 171 sc->sc_freeflag = 1; /* IRQ must mfree */ 172 173 cmd = ISAC_CMDR_XTF; 174 } 175 else 176 { 177 sc->sc_obuf = NULL; 178 sc->sc_op = NULL; 179 sc->sc_ol = 0; 180 181 if(freeflag) 182 i4b_Dfreembuf(m); 183 184 cmd = ISAC_CMDR_XTF | ISAC_CMDR_XME; 185 } 186 187 ISAC_WRITE(I_CMDR, cmd); 188 ISACCMDRWRDELAY(); 189 190 splx(s); 191 192 return(1); 193} 194 195/*---------------------------------------------------------------------------* 196 * 197 * L2 -> L1: PH-ACTIVATE-REQUEST 198 * ============================= 199 * 200 * parms: 201 * token softc of physical interface 202 * 203 * returns: 204 * ==0 205 * !=0 206 * 207 *---------------------------------------------------------------------------*/ 208static int 209isic_std_ph_activate_req(isdn_layer1token token) 210{ 211 struct isic_softc *sc = (struct isic_softc*)token; 212 213 NDBGL1(L1_PRIM, " %s ", device_xname(&sc->sc_dev)); 214 isic_next_state(sc, EV_PHAR); 215 return(0); 216} 217 218/*---------------------------------------------------------------------------* 219 * command from the upper layers 220 *---------------------------------------------------------------------------*/ 221static int 222isic_std_mph_command_req(isdn_layer1token token, int command, void *parm) 223{ 224 struct isic_softc *sc = (struct isic_softc*)token; 225 int s, pass_down = 0; 226 227 s = splnet(); 228 switch(command) 229 { 230 case CMR_DOPEN: /* daemon running */ 231 NDBGL1(L1_PRIM, "%s, command = CMR_DOPEN", device_xname(&sc->sc_dev)); 232 sc->sc_intr_valid = ISIC_INTR_VALID; 233 pass_down = 1; 234 break; 235 236 case CMR_DCLOSE: /* daemon not running */ 237 NDBGL1(L1_PRIM, "%s, command = CMR_DCLOSE", device_xname(&sc->sc_dev)); 238 sc->sc_intr_valid = ISIC_INTR_DISABLED; 239 isic_enable_intr(sc, 0); 240 pass_down = 1; 241 break; 242 243 case CMR_SETLEDS: 244 pass_down = 1; 245 break; 246 247 case CMR_SETTRACE: 248 NDBGL1(L1_PRIM, "%s, command = CMR_SETTRACE, parm = %p", device_xname(&sc->sc_dev), parm); 249 sc->sc_trace = (int)(unsigned long)parm; 250 break; 251 252 default: 253 NDBGL1(L1_ERROR, "ERROR, unknown command = %d, %s, parm = %p", command, device_xname(&sc->sc_dev), parm); 254 break; 255 } 256 257 if (pass_down && sc->drv_command != NULL) 258 sc->drv_command(sc, command, parm); 259 260 if (command == CMR_DOPEN) 261 isic_enable_intr(sc, 1); 262 263 splx(s); 264 265 return(0); 266} 267 268static void 269isic_enable_intr(struct isic_softc *sc, int enable) 270{ 271#if NNISACSX > 0 272 if (sc->sc_cardtyp == CARD_TYPEP_AVMA1PCIV2) { 273 if (enable) 274 isic_isacsx_init(sc); 275 else isic_isacsx_disable_intr(sc); 276 return; 277 } 278#endif /* NNISACSX > 0 */ 279 280#if NNISAC > 0 281 if (enable) { 282 isic_isac_init(sc); 283 } else { 284 /* disable receiver */ 285 ISAC_WRITE(I_MODE, ISAC_MODE_MDS2|ISAC_MODE_MDS1|ISAC_MODE_DIM0); 286 /* mask interrupts */ 287 if (sc->sc_ipac) { 288 IPAC_WRITE(IPAC_MASK, 0xff); 289 } else { 290 ISAC_WRITE(I_MASK, 0xff); 291 } 292 } 293#endif /* NNISAC > 0 */ 294} 295