17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 519397407SSherry Moore * Common Development and Distribution License (the "License"). 619397407SSherry Moore * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*7417cfdeSKuriakose Kuruvilla * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. 237c478bd9Sstevel@tonic-gate */ 247c478bd9Sstevel@tonic-gate 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #include <sys/types.h> 277c478bd9Sstevel@tonic-gate #include <sys/file.h> 287c478bd9Sstevel@tonic-gate #include <sys/errno.h> 297c478bd9Sstevel@tonic-gate #include <sys/open.h> 307c478bd9Sstevel@tonic-gate #include <sys/cred.h> 317c478bd9Sstevel@tonic-gate #include <sys/conf.h> 327c478bd9Sstevel@tonic-gate #include <sys/stat.h> 337c478bd9Sstevel@tonic-gate #include <sys/processor.h> 347c478bd9Sstevel@tonic-gate #include <sys/cpuvar.h> 357c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 367c478bd9Sstevel@tonic-gate #include <sys/modctl.h> 377c478bd9Sstevel@tonic-gate #include <sys/ddi.h> 387c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate #include <sys/auxv.h> 417c478bd9Sstevel@tonic-gate #include <sys/cpuid_drv.h> 427c478bd9Sstevel@tonic-gate #include <sys/systeminfo.h> 437c478bd9Sstevel@tonic-gate 447c478bd9Sstevel@tonic-gate #if defined(__x86) 457c478bd9Sstevel@tonic-gate #include <sys/x86_archext.h> 467c478bd9Sstevel@tonic-gate #endif 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate static dev_info_t *cpuid_devi; 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 517c478bd9Sstevel@tonic-gate static int 527c478bd9Sstevel@tonic-gate cpuid_getinfo(dev_info_t *devi, ddi_info_cmd_t cmd, void *arg, void **result) 537c478bd9Sstevel@tonic-gate { 547c478bd9Sstevel@tonic-gate switch (cmd) { 557c478bd9Sstevel@tonic-gate case DDI_INFO_DEVT2DEVINFO: 567c478bd9Sstevel@tonic-gate case DDI_INFO_DEVT2INSTANCE: 577c478bd9Sstevel@tonic-gate break; 587c478bd9Sstevel@tonic-gate default: 597c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 607c478bd9Sstevel@tonic-gate } 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate switch (getminor((dev_t)arg)) { 637c478bd9Sstevel@tonic-gate case CPUID_SELF_CPUID_MINOR: 647c478bd9Sstevel@tonic-gate break; 657c478bd9Sstevel@tonic-gate default: 667c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 677c478bd9Sstevel@tonic-gate } 687c478bd9Sstevel@tonic-gate 697c478bd9Sstevel@tonic-gate if (cmd == DDI_INFO_DEVT2INSTANCE) 707c478bd9Sstevel@tonic-gate *result = 0; 717c478bd9Sstevel@tonic-gate else 727c478bd9Sstevel@tonic-gate *result = cpuid_devi; 737c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 747c478bd9Sstevel@tonic-gate } 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate static int 777c478bd9Sstevel@tonic-gate cpuid_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 787c478bd9Sstevel@tonic-gate { 797c478bd9Sstevel@tonic-gate if (cmd != DDI_ATTACH) 807c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 817c478bd9Sstevel@tonic-gate cpuid_devi = devi; 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate return (ddi_create_minor_node(devi, CPUID_DRIVER_SELF_NODE, S_IFCHR, 847c478bd9Sstevel@tonic-gate CPUID_SELF_CPUID_MINOR, DDI_PSEUDO, 0)); 857c478bd9Sstevel@tonic-gate } 867c478bd9Sstevel@tonic-gate 877c478bd9Sstevel@tonic-gate static int 887c478bd9Sstevel@tonic-gate cpuid_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 897c478bd9Sstevel@tonic-gate { 907c478bd9Sstevel@tonic-gate if (cmd != DDI_DETACH) 917c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 927c478bd9Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 937c478bd9Sstevel@tonic-gate cpuid_devi = NULL; 947c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 957c478bd9Sstevel@tonic-gate } 967c478bd9Sstevel@tonic-gate 977c478bd9Sstevel@tonic-gate /*ARGSUSED1*/ 987c478bd9Sstevel@tonic-gate static int 997c478bd9Sstevel@tonic-gate cpuid_open(dev_t *dev, int flag, int otyp, cred_t *cr) 1007c478bd9Sstevel@tonic-gate { 1017c478bd9Sstevel@tonic-gate return (getminor(*dev) == CPUID_SELF_CPUID_MINOR ? 0 : ENXIO); 1027c478bd9Sstevel@tonic-gate } 1037c478bd9Sstevel@tonic-gate 1047c478bd9Sstevel@tonic-gate #if defined(_HAVE_CPUID_INSN) 1057c478bd9Sstevel@tonic-gate 1067c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 1077c478bd9Sstevel@tonic-gate static int 1087c478bd9Sstevel@tonic-gate cpuid_read(dev_t dev, uio_t *uio, cred_t *cr) 1097c478bd9Sstevel@tonic-gate { 1108949bcd6Sandrei struct cpuid_regs crs; 1117c478bd9Sstevel@tonic-gate int error = 0; 1127c478bd9Sstevel@tonic-gate 113*7417cfdeSKuriakose Kuruvilla if (!is_x86_feature(x86_featureset, X86FSET_CPUID)) 1147c478bd9Sstevel@tonic-gate return (ENXIO); 1157c478bd9Sstevel@tonic-gate 1167c478bd9Sstevel@tonic-gate if (uio->uio_resid & (sizeof (crs) - 1)) 1177c478bd9Sstevel@tonic-gate return (EINVAL); 1187c478bd9Sstevel@tonic-gate 1197c478bd9Sstevel@tonic-gate while (uio->uio_resid > 0) { 1207c478bd9Sstevel@tonic-gate u_offset_t uoff; 1217c478bd9Sstevel@tonic-gate 1227c478bd9Sstevel@tonic-gate if ((uoff = (u_offset_t)uio->uio_loffset) > UINT_MAX) { 1237c478bd9Sstevel@tonic-gate error = EINVAL; 1247c478bd9Sstevel@tonic-gate break; 1257c478bd9Sstevel@tonic-gate } 1267c478bd9Sstevel@tonic-gate 1278949bcd6Sandrei crs.cp_eax = (uint32_t)uoff; 1288949bcd6Sandrei crs.cp_ebx = crs.cp_ecx = crs.cp_edx = 0; 1298949bcd6Sandrei (void) cpuid_insn(NULL, &crs); 1307c478bd9Sstevel@tonic-gate 1318949bcd6Sandrei if ((error = uiomove(&crs, sizeof (crs), UIO_READ, uio)) != 0) 1327c478bd9Sstevel@tonic-gate break; 1337c478bd9Sstevel@tonic-gate uio->uio_loffset = uoff + 1; 1347c478bd9Sstevel@tonic-gate } 1357c478bd9Sstevel@tonic-gate 1367c478bd9Sstevel@tonic-gate return (error); 1377c478bd9Sstevel@tonic-gate } 1387c478bd9Sstevel@tonic-gate 1397c478bd9Sstevel@tonic-gate #else 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate #define cpuid_read nodev 1427c478bd9Sstevel@tonic-gate 1437c478bd9Sstevel@tonic-gate #endif /* _HAVE_CPUID_INSN */ 1447c478bd9Sstevel@tonic-gate 1457c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 1467c478bd9Sstevel@tonic-gate static int 1477c478bd9Sstevel@tonic-gate cpuid_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cr, int *rval) 1487c478bd9Sstevel@tonic-gate { 1497c478bd9Sstevel@tonic-gate char areq[16]; 1507c478bd9Sstevel@tonic-gate void *ustr; 1517c478bd9Sstevel@tonic-gate 1527c478bd9Sstevel@tonic-gate switch (cmd) { 1537c478bd9Sstevel@tonic-gate case CPUID_GET_HWCAP: { 1547c478bd9Sstevel@tonic-gate STRUCT_DECL(cpuid_get_hwcap, h); 1557c478bd9Sstevel@tonic-gate 1567c478bd9Sstevel@tonic-gate STRUCT_INIT(h, mode); 1577c478bd9Sstevel@tonic-gate if (ddi_copyin((void *)arg, 1587c478bd9Sstevel@tonic-gate STRUCT_BUF(h), STRUCT_SIZE(h), mode)) 1597c478bd9Sstevel@tonic-gate return (EFAULT); 1607c478bd9Sstevel@tonic-gate if ((ustr = STRUCT_FGETP(h, cgh_archname)) != NULL && 1617c478bd9Sstevel@tonic-gate copyinstr(ustr, areq, sizeof (areq), NULL) != 0) 1627c478bd9Sstevel@tonic-gate return (EFAULT); 1637c478bd9Sstevel@tonic-gate areq[sizeof (areq) - 1] = '\0'; 1647c478bd9Sstevel@tonic-gate 1657c478bd9Sstevel@tonic-gate if (strcmp(areq, architecture) == 0) 1667c478bd9Sstevel@tonic-gate STRUCT_FSET(h, cgh_hwcap, auxv_hwcap); 1677c478bd9Sstevel@tonic-gate #if defined(_SYSCALL32_IMPL) 1687c478bd9Sstevel@tonic-gate else if (strcmp(areq, architecture_32) == 0) 1697c478bd9Sstevel@tonic-gate STRUCT_FSET(h, cgh_hwcap, auxv_hwcap32); 1707c478bd9Sstevel@tonic-gate #endif 1717c478bd9Sstevel@tonic-gate else 1727c478bd9Sstevel@tonic-gate STRUCT_FSET(h, cgh_hwcap, 0); 1737c478bd9Sstevel@tonic-gate if (ddi_copyout(STRUCT_BUF(h), 1747c478bd9Sstevel@tonic-gate (void *)arg, STRUCT_SIZE(h), mode)) 1757c478bd9Sstevel@tonic-gate return (EFAULT); 1767c478bd9Sstevel@tonic-gate return (0); 1777c478bd9Sstevel@tonic-gate } 1787c478bd9Sstevel@tonic-gate 1797c478bd9Sstevel@tonic-gate default: 1807c478bd9Sstevel@tonic-gate return (ENOTTY); 1817c478bd9Sstevel@tonic-gate } 1827c478bd9Sstevel@tonic-gate } 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate static struct cb_ops cpuid_cb_ops = { 1857c478bd9Sstevel@tonic-gate cpuid_open, 1867c478bd9Sstevel@tonic-gate nulldev, /* close */ 1877c478bd9Sstevel@tonic-gate nodev, /* strategy */ 1887c478bd9Sstevel@tonic-gate nodev, /* print */ 1897c478bd9Sstevel@tonic-gate nodev, /* dump */ 1907c478bd9Sstevel@tonic-gate cpuid_read, 1917c478bd9Sstevel@tonic-gate nodev, /* write */ 1927c478bd9Sstevel@tonic-gate cpuid_ioctl, 1937c478bd9Sstevel@tonic-gate nodev, /* devmap */ 1947c478bd9Sstevel@tonic-gate nodev, /* mmap */ 1957c478bd9Sstevel@tonic-gate nodev, /* segmap */ 1967c478bd9Sstevel@tonic-gate nochpoll, /* poll */ 1977c478bd9Sstevel@tonic-gate ddi_prop_op, 1987c478bd9Sstevel@tonic-gate NULL, 1997c478bd9Sstevel@tonic-gate D_64BIT | D_NEW | D_MP 2007c478bd9Sstevel@tonic-gate }; 2017c478bd9Sstevel@tonic-gate 2027c478bd9Sstevel@tonic-gate static struct dev_ops cpuid_dv_ops = { 2037c478bd9Sstevel@tonic-gate DEVO_REV, 2047c478bd9Sstevel@tonic-gate 0, 2057c478bd9Sstevel@tonic-gate cpuid_getinfo, 2067c478bd9Sstevel@tonic-gate nulldev, /* identify */ 2077c478bd9Sstevel@tonic-gate nulldev, /* probe */ 2087c478bd9Sstevel@tonic-gate cpuid_attach, 2097c478bd9Sstevel@tonic-gate cpuid_detach, 2107c478bd9Sstevel@tonic-gate nodev, /* reset */ 2117c478bd9Sstevel@tonic-gate &cpuid_cb_ops, 21219397407SSherry Moore (struct bus_ops *)0, 21319397407SSherry Moore NULL, 21419397407SSherry Moore ddi_quiesce_not_needed, /* quiesce */ 2157c478bd9Sstevel@tonic-gate }; 2167c478bd9Sstevel@tonic-gate 2177c478bd9Sstevel@tonic-gate static struct modldrv modldrv = { 2187c478bd9Sstevel@tonic-gate &mod_driverops, 21919397407SSherry Moore "cpuid driver", 2207c478bd9Sstevel@tonic-gate &cpuid_dv_ops 2217c478bd9Sstevel@tonic-gate }; 2227c478bd9Sstevel@tonic-gate 2237c478bd9Sstevel@tonic-gate static struct modlinkage modl = { 2247c478bd9Sstevel@tonic-gate MODREV_1, 2257c478bd9Sstevel@tonic-gate &modldrv 2267c478bd9Sstevel@tonic-gate }; 2277c478bd9Sstevel@tonic-gate 2287c478bd9Sstevel@tonic-gate int 2297c478bd9Sstevel@tonic-gate _init(void) 2307c478bd9Sstevel@tonic-gate { 2317c478bd9Sstevel@tonic-gate return (mod_install(&modl)); 2327c478bd9Sstevel@tonic-gate } 2337c478bd9Sstevel@tonic-gate 2347c478bd9Sstevel@tonic-gate int 2357c478bd9Sstevel@tonic-gate _fini(void) 2367c478bd9Sstevel@tonic-gate { 2377c478bd9Sstevel@tonic-gate return (mod_remove(&modl)); 2387c478bd9Sstevel@tonic-gate } 2397c478bd9Sstevel@tonic-gate 2407c478bd9Sstevel@tonic-gate int 2417c478bd9Sstevel@tonic-gate _info(struct modinfo *modinfo) 2427c478bd9Sstevel@tonic-gate { 2437c478bd9Sstevel@tonic-gate return (mod_info(&modl, modinfo)); 2447c478bd9Sstevel@tonic-gate } 245