1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */ 30*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */ 31*0Sstevel@tonic-gate /* All Rights Reserved */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * This is the implementation of the kernel DMA interface for the 35*0Sstevel@tonic-gate * AT Class machines using Intel 8237A DMAC. 36*0Sstevel@tonic-gate * 37*0Sstevel@tonic-gate * The following routines in the interface are implemented: 38*0Sstevel@tonic-gate * i_dmae_init() 39*0Sstevel@tonic-gate * _dmae_nxcookie() 40*0Sstevel@tonic-gate * i_dmae_acquire() 41*0Sstevel@tonic-gate * i_dmae_free() 42*0Sstevel@tonic-gate * i_dmae_prog() 43*0Sstevel@tonic-gate * i_dmae_swsetup() 44*0Sstevel@tonic-gate * i_dmae_swstart() 45*0Sstevel@tonic-gate * i_dmae_stop() 46*0Sstevel@tonic-gate * i_dmae_enable() 47*0Sstevel@tonic-gate * i_dmae_disable() 48*0Sstevel@tonic-gate * i_dmae_get_best_mode() 49*0Sstevel@tonic-gate * i_dmae_get_chan_stat() 50*0Sstevel@tonic-gate * 51*0Sstevel@tonic-gate */ 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate #include <sys/types.h> 54*0Sstevel@tonic-gate #include <sys/param.h> 55*0Sstevel@tonic-gate #include <sys/buf.h> 56*0Sstevel@tonic-gate #include <sys/kmem.h> 57*0Sstevel@tonic-gate #include <sys/sunddi.h> 58*0Sstevel@tonic-gate #include <sys/cmn_err.h> 59*0Sstevel@tonic-gate #include <sys/dma_engine.h> 60*0Sstevel@tonic-gate #include <sys/dma_i8237A.h> 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate #ifdef DEBUG 63*0Sstevel@tonic-gate #include <sys/promif.h> 64*0Sstevel@tonic-gate static int dmaedebug = 0; 65*0Sstevel@tonic-gate #define dprintf(x) if (dmaedebug) prom_printf x 66*0Sstevel@tonic-gate #else 67*0Sstevel@tonic-gate #define dprintf(x) 68*0Sstevel@tonic-gate #endif 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate static struct dmae_chnl dmae_stat[NCHANS]; 72*0Sstevel@tonic-gate static uintptr_t dmae_call_list[NCHANS] = {0, 0, 0, 0, 0, 0, 0, 0}; 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate /* 75*0Sstevel@tonic-gate * routine: i_dmae_init() 76*0Sstevel@tonic-gate * purpose: called to initialize the dma interface, the DMAC, and any 77*0Sstevel@tonic-gate * dma data structures. Called during system initialization. 78*0Sstevel@tonic-gate * caller: main() 79*0Sstevel@tonic-gate * calls: d37A_init() 80*0Sstevel@tonic-gate */ 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate int 83*0Sstevel@tonic-gate i_dmae_init(dev_info_t *dip) 84*0Sstevel@tonic-gate { 85*0Sstevel@tonic-gate int chnl; 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate dprintf(("i_dmae_init: initializing dma.\n")); 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate /* initialize semaphore map */ 90*0Sstevel@tonic-gate for (chnl = 0; chnl < NCHANS; chnl++) { 91*0Sstevel@tonic-gate sema_init(&dmae_stat[chnl].dch_lock, 1, NULL, SEMA_DRIVER, 92*0Sstevel@tonic-gate (void *)NULL); 93*0Sstevel@tonic-gate } 94*0Sstevel@tonic-gate return (d37A_init(dip)); 95*0Sstevel@tonic-gate } 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate /* 99*0Sstevel@tonic-gate * routine: i_dmae_acquire() 100*0Sstevel@tonic-gate * purpose: Request the semaphore for the indicated channel. 101*0Sstevel@tonic-gate * A call_back function can be passed if caller does/cannot 102*0Sstevel@tonic-gate * wait for the semaphore. 103*0Sstevel@tonic-gate * caller: drivers 104*0Sstevel@tonic-gate * calls: sema_p(), sema_tryp(), ddi_set_callback() 105*0Sstevel@tonic-gate */ 106*0Sstevel@tonic-gate int 107*0Sstevel@tonic-gate i_dmae_acquire(dev_info_t *dip, int chnl, int (*dmae_waitfp)(), caddr_t arg) 108*0Sstevel@tonic-gate { 109*0Sstevel@tonic-gate #if defined(lint) 110*0Sstevel@tonic-gate dip = dip; 111*0Sstevel@tonic-gate #endif 112*0Sstevel@tonic-gate dprintf(("i_dmae_acquire: channel %d, waitfp %p\n", 113*0Sstevel@tonic-gate chnl, (void *)dmae_waitfp)); 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate if (!d37A_dma_valid(chnl)) 116*0Sstevel@tonic-gate return (DDI_FAILURE); 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate if (dmae_waitfp == DDI_DMA_SLEEP) { 119*0Sstevel@tonic-gate sema_p(&dmae_stat[chnl].dch_lock); 120*0Sstevel@tonic-gate } else if (sema_tryp(&dmae_stat[chnl].dch_lock) == 0) { 121*0Sstevel@tonic-gate if (dmae_waitfp == DDI_DMA_DONTWAIT) { 122*0Sstevel@tonic-gate dprintf(("_dma_acquire: channel %d is busy.\n", chnl)); 123*0Sstevel@tonic-gate } else { 124*0Sstevel@tonic-gate ddi_set_callback(dmae_waitfp, arg, 125*0Sstevel@tonic-gate &dmae_call_list[chnl]); 126*0Sstevel@tonic-gate } 127*0Sstevel@tonic-gate return (DDI_DMA_NORESOURCES); 128*0Sstevel@tonic-gate } 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate /* 131*0Sstevel@tonic-gate * XXX - save dip for authentication later ?? 132*0Sstevel@tonic-gate */ 133*0Sstevel@tonic-gate dprintf(("_dma_acquire: channel %d now allocated.\n", chnl)); 134*0Sstevel@tonic-gate return (DDI_SUCCESS); 135*0Sstevel@tonic-gate } 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate /* 139*0Sstevel@tonic-gate * routine: i_dmae_free() 140*0Sstevel@tonic-gate * purpose: Release the channel semaphore on chnl. Assumes caller actually 141*0Sstevel@tonic-gate * owns the semaphore (no check made for this). 142*0Sstevel@tonic-gate * caller: drivers 143*0Sstevel@tonic-gate * calls: none 144*0Sstevel@tonic-gate */ 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate int 147*0Sstevel@tonic-gate i_dmae_free(dev_info_t *dip, int chnl) 148*0Sstevel@tonic-gate { 149*0Sstevel@tonic-gate #if defined(lint) 150*0Sstevel@tonic-gate dip = dip; 151*0Sstevel@tonic-gate #endif 152*0Sstevel@tonic-gate dprintf(("i_dmae_free: channel %d\n", chnl)); 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate d37A_dma_release(chnl); 155*0Sstevel@tonic-gate /* 156*0Sstevel@tonic-gate * XXX - should dip be authenticated as the one that did acquire? 157*0Sstevel@tonic-gate */ 158*0Sstevel@tonic-gate sema_v(&dmae_stat[chnl].dch_lock); 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate if (dmae_call_list[chnl]) 161*0Sstevel@tonic-gate ddi_run_callback(&dmae_call_list[chnl]); 162*0Sstevel@tonic-gate return (DDI_SUCCESS); 163*0Sstevel@tonic-gate } 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate /* 166*0Sstevel@tonic-gate * routine: i_dmae_get_best_mode() 167*0Sstevel@tonic-gate * purpose: confirm that data is aligned for efficient flyby mode 168*0Sstevel@tonic-gate * caller: driver routines. 169*0Sstevel@tonic-gate * calls: d37A_get_best_mode. 170*0Sstevel@tonic-gate */ 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate uchar_t 173*0Sstevel@tonic-gate i_dmae_get_best_mode(dev_info_t *dip, struct ddi_dmae_req *dmaereqp) 174*0Sstevel@tonic-gate { 175*0Sstevel@tonic-gate #if defined(lint) 176*0Sstevel@tonic-gate dip = dip; 177*0Sstevel@tonic-gate #endif 178*0Sstevel@tonic-gate return (d37A_get_best_mode(dmaereqp)); 179*0Sstevel@tonic-gate } 180*0Sstevel@tonic-gate 181*0Sstevel@tonic-gate /* 182*0Sstevel@tonic-gate * routine: _dmae_nxcookie() 183*0Sstevel@tonic-gate * purpose: service the interrupt by calling device driver routine for next 184*0Sstevel@tonic-gate * DMA cookie. 185*0Sstevel@tonic-gate * caller: d37A_intr() 186*0Sstevel@tonic-gate * calls: routine provided in request structure 187*0Sstevel@tonic-gate */ 188*0Sstevel@tonic-gate 189*0Sstevel@tonic-gate ddi_dma_cookie_t * 190*0Sstevel@tonic-gate _dmae_nxcookie(int chnl) 191*0Sstevel@tonic-gate { 192*0Sstevel@tonic-gate ddi_dma_cookie_t *cookiep = NULL; 193*0Sstevel@tonic-gate 194*0Sstevel@tonic-gate dprintf(("_dmae_nxcookie: chnl %d\n", chnl)); 195*0Sstevel@tonic-gate 196*0Sstevel@tonic-gate if (dmae_stat[chnl].proc) { 197*0Sstevel@tonic-gate 198*0Sstevel@tonic-gate cookiep = dmae_stat[chnl].proc(dmae_stat[chnl].procparms); 199*0Sstevel@tonic-gate /* 200*0Sstevel@tonic-gate * expect a cookie pointer from user's routine; 201*0Sstevel@tonic-gate * null cookie pointer will terminate chaining 202*0Sstevel@tonic-gate */ 203*0Sstevel@tonic-gate } 204*0Sstevel@tonic-gate return (cookiep); 205*0Sstevel@tonic-gate } 206*0Sstevel@tonic-gate 207*0Sstevel@tonic-gate 208*0Sstevel@tonic-gate /* 209*0Sstevel@tonic-gate * routine: i_dmae_prog() 210*0Sstevel@tonic-gate * purpose: Program channel for the to_be_initiated_by_hardware operation. 211*0Sstevel@tonic-gate * _dma_acquire is called to request the channel semaphore and 212*0Sstevel@tonic-gate * mode is passed as the sleep parameter. 213*0Sstevel@tonic-gate * The channel is enabled after it is setup. 214*0Sstevel@tonic-gate * Note that the ddi_dmae_req pointer can be to NULL if the mode 215*0Sstevel@tonic-gate * registers have already been setup by a prior call; this implements 216*0Sstevel@tonic-gate * a prog_next() to update the address and count registers. 217*0Sstevel@tonic-gate * caller: driver routines 218*0Sstevel@tonic-gate * calls: d37A_prog_chan() 219*0Sstevel@tonic-gate */ 220*0Sstevel@tonic-gate 221*0Sstevel@tonic-gate int 222*0Sstevel@tonic-gate i_dmae_prog(dev_info_t *dip, struct ddi_dmae_req *dmaereqp, 223*0Sstevel@tonic-gate ddi_dma_cookie_t *cp, int chnl) 224*0Sstevel@tonic-gate { 225*0Sstevel@tonic-gate struct dmae_chnl *dcp; 226*0Sstevel@tonic-gate int rval; 227*0Sstevel@tonic-gate 228*0Sstevel@tonic-gate #if defined(lint) 229*0Sstevel@tonic-gate dip = dip; 230*0Sstevel@tonic-gate #endif 231*0Sstevel@tonic-gate rval = d37A_prog_chan(dmaereqp, cp, chnl); 232*0Sstevel@tonic-gate if (rval != DDI_SUCCESS) { 233*0Sstevel@tonic-gate dprintf(("i_dmae_prog: failure on channel %d dmaereq=%p\n", 234*0Sstevel@tonic-gate chnl, (void *)dmaereqp)); 235*0Sstevel@tonic-gate } else { 236*0Sstevel@tonic-gate dprintf(("i_dmae_prog: channel %d dmaereq=%p\n", 237*0Sstevel@tonic-gate chnl, (void *)dmaereqp)); 238*0Sstevel@tonic-gate dcp = &dmae_stat[chnl]; 239*0Sstevel@tonic-gate dcp->dch_cookiep = cp; 240*0Sstevel@tonic-gate if (dmaereqp) { 241*0Sstevel@tonic-gate dcp->proc = dmaereqp->proc; 242*0Sstevel@tonic-gate dcp->procparms = dmaereqp->procparms; 243*0Sstevel@tonic-gate } 244*0Sstevel@tonic-gate d37A_dma_enable(chnl); 245*0Sstevel@tonic-gate } 246*0Sstevel@tonic-gate return (rval); 247*0Sstevel@tonic-gate } 248*0Sstevel@tonic-gate 249*0Sstevel@tonic-gate 250*0Sstevel@tonic-gate /* 251*0Sstevel@tonic-gate * routine: i_dmae_swsetup() 252*0Sstevel@tonic-gate * purpose: Setup chan for the operation given in dmacbptr. 253*0Sstevel@tonic-gate * _dma_acquire is first called 254*0Sstevel@tonic-gate * to request the channel semaphore for chnl; mode is 255*0Sstevel@tonic-gate * passed to _dma_acquire(). 256*0Sstevel@tonic-gate * caller: driver routines 257*0Sstevel@tonic-gate * calls: d37A_dma_swsetup() 258*0Sstevel@tonic-gate */ 259*0Sstevel@tonic-gate 260*0Sstevel@tonic-gate int 261*0Sstevel@tonic-gate i_dmae_swsetup(dev_info_t *dip, struct ddi_dmae_req *dmaereqp, 262*0Sstevel@tonic-gate ddi_dma_cookie_t *cp, int chnl) 263*0Sstevel@tonic-gate { 264*0Sstevel@tonic-gate struct dmae_chnl *dcp; 265*0Sstevel@tonic-gate int rval; 266*0Sstevel@tonic-gate 267*0Sstevel@tonic-gate #if defined(lint) 268*0Sstevel@tonic-gate dip = dip; 269*0Sstevel@tonic-gate #endif 270*0Sstevel@tonic-gate rval = d37A_dma_swsetup(dmaereqp, cp, chnl); 271*0Sstevel@tonic-gate if (rval != DDI_SUCCESS) { 272*0Sstevel@tonic-gate dprintf(("i_dmae_swsetup: failure on channel %d dmaereq=%p\n", 273*0Sstevel@tonic-gate chnl, (void *)dmaereqp)); 274*0Sstevel@tonic-gate } else { 275*0Sstevel@tonic-gate dprintf(("i_dmae_swsetup: channel %d: dmaereq=%p\n", 276*0Sstevel@tonic-gate chnl, (void *)dmaereqp)); 277*0Sstevel@tonic-gate dcp = &dmae_stat[chnl]; 278*0Sstevel@tonic-gate dcp->dch_cookiep = cp; 279*0Sstevel@tonic-gate dcp->proc = dmaereqp->proc; 280*0Sstevel@tonic-gate dcp->procparms = dmaereqp->procparms; 281*0Sstevel@tonic-gate } 282*0Sstevel@tonic-gate return (rval); 283*0Sstevel@tonic-gate } 284*0Sstevel@tonic-gate 285*0Sstevel@tonic-gate 286*0Sstevel@tonic-gate /* 287*0Sstevel@tonic-gate * routine: i_dmae_swstart() 288*0Sstevel@tonic-gate * purpose: Start the operation setup by i_dmae_swsetup(). 289*0Sstevel@tonic-gate * caller: driver routines 290*0Sstevel@tonic-gate * calls: d37A_dma_swstart(). 291*0Sstevel@tonic-gate */ 292*0Sstevel@tonic-gate 293*0Sstevel@tonic-gate void 294*0Sstevel@tonic-gate i_dmae_swstart(dev_info_t *dip, int chnl) 295*0Sstevel@tonic-gate { 296*0Sstevel@tonic-gate #if defined(lint) 297*0Sstevel@tonic-gate dip = dip; 298*0Sstevel@tonic-gate #endif 299*0Sstevel@tonic-gate dprintf(("i_dmae_swstart: channel %d.\n", chnl)); 300*0Sstevel@tonic-gate 301*0Sstevel@tonic-gate d37A_dma_swstart(chnl); 302*0Sstevel@tonic-gate } 303*0Sstevel@tonic-gate 304*0Sstevel@tonic-gate 305*0Sstevel@tonic-gate /* 306*0Sstevel@tonic-gate * routine: i_dmae_stop() 307*0Sstevel@tonic-gate * purpose: stop DMA activity on chnl. 308*0Sstevel@tonic-gate * caller: driver routines 309*0Sstevel@tonic-gate * calls: splhi(), _dma_relse(), splx(), 310*0Sstevel@tonic-gate * d37A_dma_stop(). 311*0Sstevel@tonic-gate */ 312*0Sstevel@tonic-gate 313*0Sstevel@tonic-gate void 314*0Sstevel@tonic-gate i_dmae_stop(dev_info_t *dip, int chnl) 315*0Sstevel@tonic-gate { 316*0Sstevel@tonic-gate #if defined(lint) 317*0Sstevel@tonic-gate dip = dip; 318*0Sstevel@tonic-gate #endif 319*0Sstevel@tonic-gate dprintf(("i_dmae_stop: channel %d\n", chnl)); 320*0Sstevel@tonic-gate 321*0Sstevel@tonic-gate /* call d37A the stop the channel */ 322*0Sstevel@tonic-gate d37A_dma_stop(chnl); 323*0Sstevel@tonic-gate 324*0Sstevel@tonic-gate dmae_stat[chnl].dch_cookiep = NULL; 325*0Sstevel@tonic-gate } 326*0Sstevel@tonic-gate 327*0Sstevel@tonic-gate 328*0Sstevel@tonic-gate /* 329*0Sstevel@tonic-gate * routine: i_dmae_enable() 330*0Sstevel@tonic-gate * purpose: Allow the hardware tied to channel chnl to request service 331*0Sstevel@tonic-gate * from the DMAC. i_dmae_prog() should have been called prior 332*0Sstevel@tonic-gate * to this. 333*0Sstevel@tonic-gate * caller: driver routines. 334*0Sstevel@tonic-gate * calls: d37A_dma_enable() 335*0Sstevel@tonic-gate */ 336*0Sstevel@tonic-gate 337*0Sstevel@tonic-gate void 338*0Sstevel@tonic-gate i_dmae_enable(dev_info_t *dip, int chnl) 339*0Sstevel@tonic-gate { 340*0Sstevel@tonic-gate #if defined(lint) 341*0Sstevel@tonic-gate dip = dip; 342*0Sstevel@tonic-gate #endif 343*0Sstevel@tonic-gate dprintf(("i_dmae_enable: channel %d\n", chnl)); 344*0Sstevel@tonic-gate 345*0Sstevel@tonic-gate d37A_dma_enable(chnl); 346*0Sstevel@tonic-gate } 347*0Sstevel@tonic-gate 348*0Sstevel@tonic-gate 349*0Sstevel@tonic-gate /* 350*0Sstevel@tonic-gate * routine: i_dmae_disable() 351*0Sstevel@tonic-gate * purpose: Called to mask off hardware requests on channel chnl. Assumes 352*0Sstevel@tonic-gate * the caller owns the channel. 353*0Sstevel@tonic-gate * caller: driver routines. 354*0Sstevel@tonic-gate * calls: d37A_dma_disable() 355*0Sstevel@tonic-gate */ 356*0Sstevel@tonic-gate 357*0Sstevel@tonic-gate void 358*0Sstevel@tonic-gate i_dmae_disable(dev_info_t *dip, int chnl) 359*0Sstevel@tonic-gate { 360*0Sstevel@tonic-gate #if defined(lint) 361*0Sstevel@tonic-gate dip = dip; 362*0Sstevel@tonic-gate #endif 363*0Sstevel@tonic-gate /* dprintf(("i_dmae_disable: disable channel %d.\n", chnl)); */ 364*0Sstevel@tonic-gate 365*0Sstevel@tonic-gate d37A_dma_disable(chnl); 366*0Sstevel@tonic-gate 367*0Sstevel@tonic-gate dmae_stat[chnl].dch_cookiep = NULL; 368*0Sstevel@tonic-gate } 369*0Sstevel@tonic-gate 370*0Sstevel@tonic-gate 371*0Sstevel@tonic-gate /* 372*0Sstevel@tonic-gate * routine: i_dmae_get_chan_stat() 373*0Sstevel@tonic-gate * purpose: Obtain the current channel status from the DMAC 374*0Sstevel@tonic-gate * caller: driver routines. 375*0Sstevel@tonic-gate * calls: d37A_get_chan_stat() 376*0Sstevel@tonic-gate */ 377*0Sstevel@tonic-gate 378*0Sstevel@tonic-gate void 379*0Sstevel@tonic-gate i_dmae_get_chan_stat(dev_info_t *dip, int chnl, ulong_t *addressp, int *countp) 380*0Sstevel@tonic-gate { 381*0Sstevel@tonic-gate #if defined(lint) 382*0Sstevel@tonic-gate dip = dip; 383*0Sstevel@tonic-gate #endif 384*0Sstevel@tonic-gate dprintf(("i_dmae_get_chan_stat: channel %d", chnl)); 385*0Sstevel@tonic-gate 386*0Sstevel@tonic-gate d37A_get_chan_stat(chnl, addressp, countp); 387*0Sstevel@tonic-gate } 388