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 #include <sys/types.h> 30*0Sstevel@tonic-gate #include <sys/file.h> 31*0Sstevel@tonic-gate #include <sys/errno.h> 32*0Sstevel@tonic-gate #include <sys/open.h> 33*0Sstevel@tonic-gate #include <sys/cred.h> 34*0Sstevel@tonic-gate #include <sys/conf.h> 35*0Sstevel@tonic-gate #include <sys/stat.h> 36*0Sstevel@tonic-gate #include <sys/processor.h> 37*0Sstevel@tonic-gate #include <sys/cpuvar.h> 38*0Sstevel@tonic-gate #include <sys/kmem.h> 39*0Sstevel@tonic-gate #include <sys/modctl.h> 40*0Sstevel@tonic-gate #include <sys/ddi.h> 41*0Sstevel@tonic-gate #include <sys/sunddi.h> 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #include <sys/auxv.h> 44*0Sstevel@tonic-gate #include <sys/cpuid_drv.h> 45*0Sstevel@tonic-gate #include <sys/systeminfo.h> 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #if defined(__x86) 48*0Sstevel@tonic-gate #include <sys/x86_archext.h> 49*0Sstevel@tonic-gate #endif 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate static dev_info_t *cpuid_devi; 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate /*ARGSUSED*/ 54*0Sstevel@tonic-gate static int 55*0Sstevel@tonic-gate cpuid_getinfo(dev_info_t *devi, ddi_info_cmd_t cmd, void *arg, void **result) 56*0Sstevel@tonic-gate { 57*0Sstevel@tonic-gate switch (cmd) { 58*0Sstevel@tonic-gate case DDI_INFO_DEVT2DEVINFO: 59*0Sstevel@tonic-gate case DDI_INFO_DEVT2INSTANCE: 60*0Sstevel@tonic-gate break; 61*0Sstevel@tonic-gate default: 62*0Sstevel@tonic-gate return (DDI_FAILURE); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate switch (getminor((dev_t)arg)) { 66*0Sstevel@tonic-gate case CPUID_SELF_CPUID_MINOR: 67*0Sstevel@tonic-gate break; 68*0Sstevel@tonic-gate default: 69*0Sstevel@tonic-gate return (DDI_FAILURE); 70*0Sstevel@tonic-gate } 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate if (cmd == DDI_INFO_DEVT2INSTANCE) 73*0Sstevel@tonic-gate *result = 0; 74*0Sstevel@tonic-gate else 75*0Sstevel@tonic-gate *result = cpuid_devi; 76*0Sstevel@tonic-gate return (DDI_SUCCESS); 77*0Sstevel@tonic-gate } 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate static int 80*0Sstevel@tonic-gate cpuid_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 81*0Sstevel@tonic-gate { 82*0Sstevel@tonic-gate if (cmd != DDI_ATTACH) 83*0Sstevel@tonic-gate return (DDI_FAILURE); 84*0Sstevel@tonic-gate cpuid_devi = devi; 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate return (ddi_create_minor_node(devi, CPUID_DRIVER_SELF_NODE, S_IFCHR, 87*0Sstevel@tonic-gate CPUID_SELF_CPUID_MINOR, DDI_PSEUDO, 0)); 88*0Sstevel@tonic-gate } 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate static int 91*0Sstevel@tonic-gate cpuid_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 92*0Sstevel@tonic-gate { 93*0Sstevel@tonic-gate if (cmd != DDI_DETACH) 94*0Sstevel@tonic-gate return (DDI_FAILURE); 95*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 96*0Sstevel@tonic-gate cpuid_devi = NULL; 97*0Sstevel@tonic-gate return (DDI_SUCCESS); 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate /*ARGSUSED1*/ 101*0Sstevel@tonic-gate static int 102*0Sstevel@tonic-gate cpuid_open(dev_t *dev, int flag, int otyp, cred_t *cr) 103*0Sstevel@tonic-gate { 104*0Sstevel@tonic-gate return (getminor(*dev) == CPUID_SELF_CPUID_MINOR ? 0 : ENXIO); 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate #if defined(_HAVE_CPUID_INSN) 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate /*ARGSUSED*/ 110*0Sstevel@tonic-gate static int 111*0Sstevel@tonic-gate cpuid_read(dev_t dev, uio_t *uio, cred_t *cr) 112*0Sstevel@tonic-gate { 113*0Sstevel@tonic-gate uint32_t crs[4]; 114*0Sstevel@tonic-gate int error = 0; 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate if ((x86_feature & X86_CPUID) == 0) 117*0Sstevel@tonic-gate return (ENXIO); 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate if (uio->uio_resid & (sizeof (crs) - 1)) 120*0Sstevel@tonic-gate return (EINVAL); 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate while (uio->uio_resid > 0) { 123*0Sstevel@tonic-gate u_offset_t uoff; 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate if ((uoff = (u_offset_t)uio->uio_loffset) > UINT_MAX) { 126*0Sstevel@tonic-gate error = EINVAL; 127*0Sstevel@tonic-gate break; 128*0Sstevel@tonic-gate } 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate crs[0] = cpuid_insn(NULL, 131*0Sstevel@tonic-gate (uint32_t)uoff, &crs[1], &crs[2], &crs[3]); 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate if ((error = uiomove(crs, sizeof (crs), UIO_READ, uio)) != 0) 134*0Sstevel@tonic-gate break; 135*0Sstevel@tonic-gate uio->uio_loffset = uoff + 1; 136*0Sstevel@tonic-gate } 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate return (error); 139*0Sstevel@tonic-gate } 140*0Sstevel@tonic-gate 141*0Sstevel@tonic-gate #else 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate #define cpuid_read nodev 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate #endif /* _HAVE_CPUID_INSN */ 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate /*ARGSUSED*/ 148*0Sstevel@tonic-gate static int 149*0Sstevel@tonic-gate cpuid_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cr, int *rval) 150*0Sstevel@tonic-gate { 151*0Sstevel@tonic-gate char areq[16]; 152*0Sstevel@tonic-gate void *ustr; 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate switch (cmd) { 155*0Sstevel@tonic-gate case CPUID_GET_HWCAP: { 156*0Sstevel@tonic-gate STRUCT_DECL(cpuid_get_hwcap, h); 157*0Sstevel@tonic-gate 158*0Sstevel@tonic-gate STRUCT_INIT(h, mode); 159*0Sstevel@tonic-gate if (ddi_copyin((void *)arg, 160*0Sstevel@tonic-gate STRUCT_BUF(h), STRUCT_SIZE(h), mode)) 161*0Sstevel@tonic-gate return (EFAULT); 162*0Sstevel@tonic-gate if ((ustr = STRUCT_FGETP(h, cgh_archname)) != NULL && 163*0Sstevel@tonic-gate copyinstr(ustr, areq, sizeof (areq), NULL) != 0) 164*0Sstevel@tonic-gate return (EFAULT); 165*0Sstevel@tonic-gate areq[sizeof (areq) - 1] = '\0'; 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate if (strcmp(areq, architecture) == 0) 168*0Sstevel@tonic-gate STRUCT_FSET(h, cgh_hwcap, auxv_hwcap); 169*0Sstevel@tonic-gate #if defined(_SYSCALL32_IMPL) 170*0Sstevel@tonic-gate else if (strcmp(areq, architecture_32) == 0) 171*0Sstevel@tonic-gate STRUCT_FSET(h, cgh_hwcap, auxv_hwcap32); 172*0Sstevel@tonic-gate #endif 173*0Sstevel@tonic-gate else 174*0Sstevel@tonic-gate STRUCT_FSET(h, cgh_hwcap, 0); 175*0Sstevel@tonic-gate if (ddi_copyout(STRUCT_BUF(h), 176*0Sstevel@tonic-gate (void *)arg, STRUCT_SIZE(h), mode)) 177*0Sstevel@tonic-gate return (EFAULT); 178*0Sstevel@tonic-gate return (0); 179*0Sstevel@tonic-gate } 180*0Sstevel@tonic-gate 181*0Sstevel@tonic-gate default: 182*0Sstevel@tonic-gate return (ENOTTY); 183*0Sstevel@tonic-gate } 184*0Sstevel@tonic-gate } 185*0Sstevel@tonic-gate 186*0Sstevel@tonic-gate static struct cb_ops cpuid_cb_ops = { 187*0Sstevel@tonic-gate cpuid_open, 188*0Sstevel@tonic-gate nulldev, /* close */ 189*0Sstevel@tonic-gate nodev, /* strategy */ 190*0Sstevel@tonic-gate nodev, /* print */ 191*0Sstevel@tonic-gate nodev, /* dump */ 192*0Sstevel@tonic-gate cpuid_read, 193*0Sstevel@tonic-gate nodev, /* write */ 194*0Sstevel@tonic-gate cpuid_ioctl, 195*0Sstevel@tonic-gate nodev, /* devmap */ 196*0Sstevel@tonic-gate nodev, /* mmap */ 197*0Sstevel@tonic-gate nodev, /* segmap */ 198*0Sstevel@tonic-gate nochpoll, /* poll */ 199*0Sstevel@tonic-gate ddi_prop_op, 200*0Sstevel@tonic-gate NULL, 201*0Sstevel@tonic-gate D_64BIT | D_NEW | D_MP 202*0Sstevel@tonic-gate }; 203*0Sstevel@tonic-gate 204*0Sstevel@tonic-gate static struct dev_ops cpuid_dv_ops = { 205*0Sstevel@tonic-gate DEVO_REV, 206*0Sstevel@tonic-gate 0, 207*0Sstevel@tonic-gate cpuid_getinfo, 208*0Sstevel@tonic-gate nulldev, /* identify */ 209*0Sstevel@tonic-gate nulldev, /* probe */ 210*0Sstevel@tonic-gate cpuid_attach, 211*0Sstevel@tonic-gate cpuid_detach, 212*0Sstevel@tonic-gate nodev, /* reset */ 213*0Sstevel@tonic-gate &cpuid_cb_ops, 214*0Sstevel@tonic-gate (struct bus_ops *)0 215*0Sstevel@tonic-gate }; 216*0Sstevel@tonic-gate 217*0Sstevel@tonic-gate static struct modldrv modldrv = { 218*0Sstevel@tonic-gate &mod_driverops, 219*0Sstevel@tonic-gate "cpuid driver v%I%", 220*0Sstevel@tonic-gate &cpuid_dv_ops 221*0Sstevel@tonic-gate }; 222*0Sstevel@tonic-gate 223*0Sstevel@tonic-gate static struct modlinkage modl = { 224*0Sstevel@tonic-gate MODREV_1, 225*0Sstevel@tonic-gate &modldrv 226*0Sstevel@tonic-gate }; 227*0Sstevel@tonic-gate 228*0Sstevel@tonic-gate int 229*0Sstevel@tonic-gate _init(void) 230*0Sstevel@tonic-gate { 231*0Sstevel@tonic-gate return (mod_install(&modl)); 232*0Sstevel@tonic-gate } 233*0Sstevel@tonic-gate 234*0Sstevel@tonic-gate int 235*0Sstevel@tonic-gate _fini(void) 236*0Sstevel@tonic-gate { 237*0Sstevel@tonic-gate return (mod_remove(&modl)); 238*0Sstevel@tonic-gate } 239*0Sstevel@tonic-gate 240*0Sstevel@tonic-gate int 241*0Sstevel@tonic-gate _info(struct modinfo *modinfo) 242*0Sstevel@tonic-gate { 243*0Sstevel@tonic-gate return (mod_info(&modl, modinfo)); 244*0Sstevel@tonic-gate } 245