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 1991-2002 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 #include <sys/types.h> 30*0Sstevel@tonic-gate #include <sys/conf.h> 31*0Sstevel@tonic-gate #include <sys/cmn_err.h> 32*0Sstevel@tonic-gate #include <sys/kmem.h> 33*0Sstevel@tonic-gate #include <sys/open.h> 34*0Sstevel@tonic-gate #include <sys/stat.h> 35*0Sstevel@tonic-gate #include <sys/modctl.h> 36*0Sstevel@tonic-gate #include <sys/errno.h> 37*0Sstevel@tonic-gate #include <sys/ddi.h> 38*0Sstevel@tonic-gate #include <sys/sunddi.h> 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate /* #define SBUSMEM_DEBUG */ 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #ifdef SBUSMEM_DEBUG 43*0Sstevel@tonic-gate #include <sys/ddi_impldefs.h> 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate int sbusmem_debug_flag; 46*0Sstevel@tonic-gate #define sbusmem_debug if (sbusmem_debug_flag) printf 47*0Sstevel@tonic-gate #endif /* SBUSMEM_DEBUG */ 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate static void *sbusmem_state_head; 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate struct sbusmem_unit { 52*0Sstevel@tonic-gate uint_t size; 53*0Sstevel@tonic-gate uint_t pagesize; 54*0Sstevel@tonic-gate dev_info_t *dip; 55*0Sstevel@tonic-gate }; 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate static int sbmem_open(dev_t *, int, int, cred_t *); 58*0Sstevel@tonic-gate static int sbmem_close(dev_t, int, int, struct cred *); 59*0Sstevel@tonic-gate static int sbmem_read(dev_t, struct uio *, cred_t *); 60*0Sstevel@tonic-gate static int sbmem_write(dev_t, struct uio *, cred_t *); 61*0Sstevel@tonic-gate static int sbmem_devmap(dev_t, devmap_cookie_t, offset_t, size_t, 62*0Sstevel@tonic-gate size_t *, uint_t); 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate static struct cb_ops sbmem_cb_ops = { 65*0Sstevel@tonic-gate sbmem_open, /* open */ 66*0Sstevel@tonic-gate sbmem_close, /* close */ 67*0Sstevel@tonic-gate nodev, /* strategy */ 68*0Sstevel@tonic-gate nodev, /* print */ 69*0Sstevel@tonic-gate nodev, /* dump */ 70*0Sstevel@tonic-gate sbmem_read, /* read */ 71*0Sstevel@tonic-gate sbmem_write, /* write */ 72*0Sstevel@tonic-gate nodev, /* ioctl */ 73*0Sstevel@tonic-gate sbmem_devmap, /* devmap */ 74*0Sstevel@tonic-gate nodev, /* mmap */ 75*0Sstevel@tonic-gate ddi_devmap_segmap, /* segmap */ 76*0Sstevel@tonic-gate nochpoll, /* poll */ 77*0Sstevel@tonic-gate ddi_prop_op, /* cb_prop_op */ 78*0Sstevel@tonic-gate 0, /* streamtab */ 79*0Sstevel@tonic-gate D_NEW|D_MP|D_DEVMAP|D_HOTPLUG, /* Driver compatibility flag */ 80*0Sstevel@tonic-gate CB_REV, /* rev */ 81*0Sstevel@tonic-gate nodev, /* int (*cb_aread)() */ 82*0Sstevel@tonic-gate nodev /* int (*cb_awrite)() */ 83*0Sstevel@tonic-gate }; 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate static int sbmem_attach(dev_info_t *, ddi_attach_cmd_t); 86*0Sstevel@tonic-gate static int sbmem_detach(dev_info_t *, ddi_detach_cmd_t); 87*0Sstevel@tonic-gate static int sbmem_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate static struct dev_ops sbmem_ops = { 90*0Sstevel@tonic-gate DEVO_REV, /* devo_rev, */ 91*0Sstevel@tonic-gate 0, /* refcnt */ 92*0Sstevel@tonic-gate sbmem_info, /* get_dev_info */ 93*0Sstevel@tonic-gate nulldev, /* identify */ 94*0Sstevel@tonic-gate nulldev, /* probe */ 95*0Sstevel@tonic-gate sbmem_attach, /* attach */ 96*0Sstevel@tonic-gate sbmem_detach, /* detach */ 97*0Sstevel@tonic-gate nodev, /* reset */ 98*0Sstevel@tonic-gate &sbmem_cb_ops, /* driver operations */ 99*0Sstevel@tonic-gate (struct bus_ops *)0, /* bus operations */ 100*0Sstevel@tonic-gate nulldev /* power */ 101*0Sstevel@tonic-gate }; 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate static struct modldrv modldrv = { 104*0Sstevel@tonic-gate &mod_driverops, /* Type of module. This one is a driver */ 105*0Sstevel@tonic-gate "SBus memory driver v%I%", /* Name of module. */ 106*0Sstevel@tonic-gate &sbmem_ops, /* driver ops */ 107*0Sstevel@tonic-gate }; 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate static struct modlinkage modlinkage = { 110*0Sstevel@tonic-gate MODREV_1, (void *)&modldrv, NULL 111*0Sstevel@tonic-gate }; 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate static int sbmem_rw(dev_t, struct uio *, enum uio_rw, cred_t *); 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate #if !defined(lint) 116*0Sstevel@tonic-gate static char sbusmem_initmsg[] = "sbusmem _init: sbusmem.c\t%I%\t%E%\n"; 117*0Sstevel@tonic-gate #endif 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate int 120*0Sstevel@tonic-gate _init(void) 121*0Sstevel@tonic-gate { 122*0Sstevel@tonic-gate int error; 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate if ((error = ddi_soft_state_init(&sbusmem_state_head, 125*0Sstevel@tonic-gate sizeof (struct sbusmem_unit), 1)) != 0) { 126*0Sstevel@tonic-gate return (error); 127*0Sstevel@tonic-gate } 128*0Sstevel@tonic-gate if ((error = mod_install(&modlinkage)) != 0) { 129*0Sstevel@tonic-gate ddi_soft_state_fini(&sbusmem_state_head); 130*0Sstevel@tonic-gate } 131*0Sstevel@tonic-gate return (error); 132*0Sstevel@tonic-gate } 133*0Sstevel@tonic-gate 134*0Sstevel@tonic-gate int 135*0Sstevel@tonic-gate _fini(void) 136*0Sstevel@tonic-gate { 137*0Sstevel@tonic-gate int error; 138*0Sstevel@tonic-gate 139*0Sstevel@tonic-gate if ((error = mod_remove(&modlinkage)) == 0) { 140*0Sstevel@tonic-gate ddi_soft_state_fini(&sbusmem_state_head); 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate return (error); 143*0Sstevel@tonic-gate } 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate int 146*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 147*0Sstevel@tonic-gate { 148*0Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 149*0Sstevel@tonic-gate } 150*0Sstevel@tonic-gate 151*0Sstevel@tonic-gate static int 152*0Sstevel@tonic-gate sbmem_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 153*0Sstevel@tonic-gate { 154*0Sstevel@tonic-gate struct sbusmem_unit *un; 155*0Sstevel@tonic-gate int error = DDI_FAILURE; 156*0Sstevel@tonic-gate int instance, ilen; 157*0Sstevel@tonic-gate uint_t size; 158*0Sstevel@tonic-gate char *ident; 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate switch (cmd) { 161*0Sstevel@tonic-gate case DDI_ATTACH: 162*0Sstevel@tonic-gate instance = ddi_get_instance(devi); 163*0Sstevel@tonic-gate 164*0Sstevel@tonic-gate size = ddi_getprop(DDI_DEV_T_NONE, devi, 165*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, "size", -1); 166*0Sstevel@tonic-gate if (size == (uint_t)-1) { 167*0Sstevel@tonic-gate #ifdef SBUSMEM_DEBUG 168*0Sstevel@tonic-gate sbusmem_debug( 169*0Sstevel@tonic-gate "sbmem_attach%d: No size property\n", instance); 170*0Sstevel@tonic-gate #endif /* SBUSMEM_DEBUG */ 171*0Sstevel@tonic-gate break; 172*0Sstevel@tonic-gate } 173*0Sstevel@tonic-gate 174*0Sstevel@tonic-gate #ifdef SBUSMEM_DEBUG 175*0Sstevel@tonic-gate { 176*0Sstevel@tonic-gate struct regspec *rp = ddi_rnumber_to_regspec(devi, 0); 177*0Sstevel@tonic-gate 178*0Sstevel@tonic-gate if (rp == NULL) { 179*0Sstevel@tonic-gate sbusmem_debug( 180*0Sstevel@tonic-gate "sbmem_attach%d: No reg property\n", instance); 181*0Sstevel@tonic-gate } else { 182*0Sstevel@tonic-gate sbusmem_debug( 183*0Sstevel@tonic-gate "sbmem_attach%d: slot 0x%x size 0x%x\n", instance, 184*0Sstevel@tonic-gate rp->regspec_bustype, rp->regspec_size); 185*0Sstevel@tonic-gate } 186*0Sstevel@tonic-gate } 187*0Sstevel@tonic-gate #endif /* SBUSMEM_DEBUG */ 188*0Sstevel@tonic-gate 189*0Sstevel@tonic-gate if (ddi_getlongprop(DDI_DEV_T_NONE, devi, 190*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, "ident", 191*0Sstevel@tonic-gate (caddr_t)&ident, &ilen) != DDI_PROP_SUCCESS) { 192*0Sstevel@tonic-gate #ifdef SBUSMEM_DEBUG 193*0Sstevel@tonic-gate sbusmem_debug( 194*0Sstevel@tonic-gate "sbmem_attach%d: No ident property\n", instance); 195*0Sstevel@tonic-gate #endif /* SBUSMEM_DEBUG */ 196*0Sstevel@tonic-gate break; 197*0Sstevel@tonic-gate } 198*0Sstevel@tonic-gate 199*0Sstevel@tonic-gate if (ddi_soft_state_zalloc(sbusmem_state_head, 200*0Sstevel@tonic-gate instance) != DDI_SUCCESS) 201*0Sstevel@tonic-gate break; 202*0Sstevel@tonic-gate 203*0Sstevel@tonic-gate if ((un = ddi_get_soft_state(sbusmem_state_head, 204*0Sstevel@tonic-gate instance)) == NULL) { 205*0Sstevel@tonic-gate ddi_soft_state_free(sbusmem_state_head, instance); 206*0Sstevel@tonic-gate break; 207*0Sstevel@tonic-gate } 208*0Sstevel@tonic-gate 209*0Sstevel@tonic-gate if (ddi_create_minor_node(devi, ident, S_IFCHR, instance, 210*0Sstevel@tonic-gate DDI_PSEUDO, NULL) == DDI_FAILURE) { 211*0Sstevel@tonic-gate kmem_free(ident, ilen); 212*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 213*0Sstevel@tonic-gate ddi_soft_state_free(sbusmem_state_head, instance); 214*0Sstevel@tonic-gate break; 215*0Sstevel@tonic-gate } 216*0Sstevel@tonic-gate kmem_free(ident, ilen); 217*0Sstevel@tonic-gate un->dip = devi; 218*0Sstevel@tonic-gate un->size = size; 219*0Sstevel@tonic-gate un->pagesize = ddi_ptob(devi, 1); 220*0Sstevel@tonic-gate 221*0Sstevel@tonic-gate #ifdef SBUSMEM_DEBUG 222*0Sstevel@tonic-gate sbusmem_debug("sbmem_attach%d: dip 0x%p size 0x%x\n", 223*0Sstevel@tonic-gate instance, devi, size); 224*0Sstevel@tonic-gate #endif /* SBUSMEM_DEBUG */ 225*0Sstevel@tonic-gate 226*0Sstevel@tonic-gate ddi_report_dev(devi); 227*0Sstevel@tonic-gate error = DDI_SUCCESS; 228*0Sstevel@tonic-gate break; 229*0Sstevel@tonic-gate case DDI_RESUME: 230*0Sstevel@tonic-gate error = DDI_SUCCESS; 231*0Sstevel@tonic-gate break; 232*0Sstevel@tonic-gate default: 233*0Sstevel@tonic-gate break; 234*0Sstevel@tonic-gate } 235*0Sstevel@tonic-gate return (error); 236*0Sstevel@tonic-gate } 237*0Sstevel@tonic-gate 238*0Sstevel@tonic-gate static int 239*0Sstevel@tonic-gate sbmem_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 240*0Sstevel@tonic-gate { 241*0Sstevel@tonic-gate int instance; 242*0Sstevel@tonic-gate 243*0Sstevel@tonic-gate switch (cmd) { 244*0Sstevel@tonic-gate case DDI_DETACH: 245*0Sstevel@tonic-gate instance = ddi_get_instance(devi); 246*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 247*0Sstevel@tonic-gate ddi_soft_state_free(sbusmem_state_head, instance); 248*0Sstevel@tonic-gate return (DDI_SUCCESS); 249*0Sstevel@tonic-gate 250*0Sstevel@tonic-gate case DDI_SUSPEND: 251*0Sstevel@tonic-gate return (DDI_SUCCESS); 252*0Sstevel@tonic-gate } 253*0Sstevel@tonic-gate return (DDI_FAILURE); 254*0Sstevel@tonic-gate } 255*0Sstevel@tonic-gate 256*0Sstevel@tonic-gate /*ARGSUSED1*/ 257*0Sstevel@tonic-gate static int 258*0Sstevel@tonic-gate sbmem_open(dev_t *devp, int flag, int typ, cred_t *cred) 259*0Sstevel@tonic-gate { 260*0Sstevel@tonic-gate int instance; 261*0Sstevel@tonic-gate 262*0Sstevel@tonic-gate if (typ != OTYP_CHR) 263*0Sstevel@tonic-gate return (EINVAL); 264*0Sstevel@tonic-gate 265*0Sstevel@tonic-gate instance = getminor(*devp); 266*0Sstevel@tonic-gate if (ddi_get_soft_state(sbusmem_state_head, instance) == NULL) { 267*0Sstevel@tonic-gate return (ENXIO); 268*0Sstevel@tonic-gate } 269*0Sstevel@tonic-gate return (0); 270*0Sstevel@tonic-gate } 271*0Sstevel@tonic-gate 272*0Sstevel@tonic-gate /*ARGSUSED*/ 273*0Sstevel@tonic-gate static int 274*0Sstevel@tonic-gate sbmem_close(dev_t dev, int flag, int otyp, struct cred *cred) 275*0Sstevel@tonic-gate { 276*0Sstevel@tonic-gate if (otyp != OTYP_CHR) 277*0Sstevel@tonic-gate return (EINVAL); 278*0Sstevel@tonic-gate 279*0Sstevel@tonic-gate return (0); 280*0Sstevel@tonic-gate } 281*0Sstevel@tonic-gate 282*0Sstevel@tonic-gate static int 283*0Sstevel@tonic-gate sbmem_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 284*0Sstevel@tonic-gate { 285*0Sstevel@tonic-gate int instance, error = DDI_FAILURE; 286*0Sstevel@tonic-gate struct sbusmem_unit *un; 287*0Sstevel@tonic-gate 288*0Sstevel@tonic-gate #if defined(lint) || defined(__lint) 289*0Sstevel@tonic-gate dip = dip; 290*0Sstevel@tonic-gate #endif /* lint || __lint */ 291*0Sstevel@tonic-gate 292*0Sstevel@tonic-gate switch (infocmd) { 293*0Sstevel@tonic-gate case DDI_INFO_DEVT2DEVINFO: 294*0Sstevel@tonic-gate instance = getminor((dev_t)arg); 295*0Sstevel@tonic-gate if ((un = ddi_get_soft_state(sbusmem_state_head, 296*0Sstevel@tonic-gate instance)) != NULL) { 297*0Sstevel@tonic-gate *result = (void *)un->dip; 298*0Sstevel@tonic-gate error = DDI_SUCCESS; 299*0Sstevel@tonic-gate #ifdef SBUSMEM_DEBUG 300*0Sstevel@tonic-gate sbusmem_debug( 301*0Sstevel@tonic-gate "sbmem_info%d: returning dip 0x%p\n", instance, un->dip); 302*0Sstevel@tonic-gate #endif /* SBUSMEM_DEBUG */ 303*0Sstevel@tonic-gate 304*0Sstevel@tonic-gate } 305*0Sstevel@tonic-gate break; 306*0Sstevel@tonic-gate 307*0Sstevel@tonic-gate case DDI_INFO_DEVT2INSTANCE: 308*0Sstevel@tonic-gate instance = getminor((dev_t)arg); 309*0Sstevel@tonic-gate *result = (void *)instance; 310*0Sstevel@tonic-gate error = DDI_SUCCESS; 311*0Sstevel@tonic-gate break; 312*0Sstevel@tonic-gate 313*0Sstevel@tonic-gate default: 314*0Sstevel@tonic-gate break; 315*0Sstevel@tonic-gate } 316*0Sstevel@tonic-gate return (error); 317*0Sstevel@tonic-gate } 318*0Sstevel@tonic-gate 319*0Sstevel@tonic-gate static int 320*0Sstevel@tonic-gate sbmem_read(dev_t dev, struct uio *uio, cred_t *cred) 321*0Sstevel@tonic-gate { 322*0Sstevel@tonic-gate return (sbmem_rw(dev, uio, UIO_READ, cred)); 323*0Sstevel@tonic-gate } 324*0Sstevel@tonic-gate 325*0Sstevel@tonic-gate static int 326*0Sstevel@tonic-gate sbmem_write(dev_t dev, struct uio *uio, cred_t *cred) 327*0Sstevel@tonic-gate { 328*0Sstevel@tonic-gate return (sbmem_rw(dev, uio, UIO_WRITE, cred)); 329*0Sstevel@tonic-gate } 330*0Sstevel@tonic-gate 331*0Sstevel@tonic-gate static int 332*0Sstevel@tonic-gate sbmem_rw(dev_t dev, struct uio *uio, enum uio_rw rw, cred_t *cred) 333*0Sstevel@tonic-gate { 334*0Sstevel@tonic-gate uint_t c; 335*0Sstevel@tonic-gate struct iovec *iov; 336*0Sstevel@tonic-gate struct sbusmem_unit *un; 337*0Sstevel@tonic-gate uint_t pagesize, msize; 338*0Sstevel@tonic-gate int instance, error = 0; 339*0Sstevel@tonic-gate dev_info_t *dip; 340*0Sstevel@tonic-gate caddr_t reg; 341*0Sstevel@tonic-gate 342*0Sstevel@tonic-gate #if defined(lint) || defined(__lint) 343*0Sstevel@tonic-gate cred = cred; 344*0Sstevel@tonic-gate #endif /* lint || __lint */ 345*0Sstevel@tonic-gate 346*0Sstevel@tonic-gate instance = getminor(dev); 347*0Sstevel@tonic-gate if ((un = ddi_get_soft_state(sbusmem_state_head, instance)) == NULL) { 348*0Sstevel@tonic-gate return (ENXIO); 349*0Sstevel@tonic-gate } 350*0Sstevel@tonic-gate dip = un->dip; 351*0Sstevel@tonic-gate pagesize = un->pagesize; 352*0Sstevel@tonic-gate 353*0Sstevel@tonic-gate while (uio->uio_resid > 0 && error == 0) { 354*0Sstevel@tonic-gate iov = uio->uio_iov; 355*0Sstevel@tonic-gate if (iov->iov_len == 0) { 356*0Sstevel@tonic-gate uio->uio_iov++; 357*0Sstevel@tonic-gate uio->uio_iovcnt--; 358*0Sstevel@tonic-gate if (uio->uio_iovcnt < 0) 359*0Sstevel@tonic-gate cmn_err(CE_PANIC, "sbmem_rw"); 360*0Sstevel@tonic-gate continue; 361*0Sstevel@tonic-gate } 362*0Sstevel@tonic-gate 363*0Sstevel@tonic-gate if (uio->uio_offset > un->size) { 364*0Sstevel@tonic-gate return (EFAULT); 365*0Sstevel@tonic-gate } 366*0Sstevel@tonic-gate 367*0Sstevel@tonic-gate if (uio->uio_offset == un->size) { 368*0Sstevel@tonic-gate return (0); /* EOF */ 369*0Sstevel@tonic-gate } 370*0Sstevel@tonic-gate msize = pagesize - (uio->uio_offset & (pagesize - 1)); 371*0Sstevel@tonic-gate if (ddi_map_regs(dip, 0, ®, uio->uio_offset, 372*0Sstevel@tonic-gate (off_t)msize) != DDI_SUCCESS) { 373*0Sstevel@tonic-gate return (EFAULT); 374*0Sstevel@tonic-gate } 375*0Sstevel@tonic-gate c = min(msize, (uint_t)iov->iov_len); 376*0Sstevel@tonic-gate if (ddi_peekpokeio(dip, uio, rw, reg, (int)c, 377*0Sstevel@tonic-gate sizeof (int)) != DDI_SUCCESS) 378*0Sstevel@tonic-gate error = EFAULT; 379*0Sstevel@tonic-gate 380*0Sstevel@tonic-gate ddi_unmap_regs(dip, 0, ®, uio->uio_offset, (off_t)msize); 381*0Sstevel@tonic-gate } 382*0Sstevel@tonic-gate return (error); 383*0Sstevel@tonic-gate } 384*0Sstevel@tonic-gate 385*0Sstevel@tonic-gate static int 386*0Sstevel@tonic-gate sbmem_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off, size_t len, 387*0Sstevel@tonic-gate size_t *maplen, uint_t model) 388*0Sstevel@tonic-gate { 389*0Sstevel@tonic-gate struct sbusmem_unit *un; 390*0Sstevel@tonic-gate int instance, error; 391*0Sstevel@tonic-gate 392*0Sstevel@tonic-gate #if defined(lint) || defined(__lint) 393*0Sstevel@tonic-gate model = model; 394*0Sstevel@tonic-gate #endif /* lint || __lint */ 395*0Sstevel@tonic-gate 396*0Sstevel@tonic-gate instance = getminor(dev); 397*0Sstevel@tonic-gate if ((un = ddi_get_soft_state(sbusmem_state_head, instance)) == NULL) { 398*0Sstevel@tonic-gate return (ENXIO); 399*0Sstevel@tonic-gate } 400*0Sstevel@tonic-gate if (off + len > un->size) { 401*0Sstevel@tonic-gate return (ENXIO); 402*0Sstevel@tonic-gate } 403*0Sstevel@tonic-gate if ((error = devmap_devmem_setup(dhp, un->dip, NULL, 0, 404*0Sstevel@tonic-gate off, len, PROT_ALL, DEVMAP_DEFAULTS, NULL)) < 0) { 405*0Sstevel@tonic-gate return (error); 406*0Sstevel@tonic-gate } 407*0Sstevel@tonic-gate *maplen = ptob(btopr(len)); 408*0Sstevel@tonic-gate return (0); 409*0Sstevel@tonic-gate } 410