/* $NetBSD: procfs_machdep.c,v 1.31 2008/06/11 21:47:46 njoly Exp $ */ /* * Copyright (c) 2001 Wasabi Systems, Inc. * All rights reserved. * * Written by Frank van der Linden and Jason R. Thorpe for * Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * NOTE: We simply use the primary CPU's cpuid_level and tsc_freq * here. Might want to change this later. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: procfs_machdep.c,v 1.31 2008/06/11 21:47:46 njoly Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/mount.h> #include <sys/stat.h> #include <sys/vnode.h> #include <sys/proc.h> #include <miscfs/procfs/procfs.h> #include <machine/cpu.h> #include <machine/reg.h> #include <machine/specialreg.h> extern int i386_fpu_present, i386_fpu_exception, i386_fpu_fdivbug; extern char cpu_model[]; static const char * const i386_features[] = { "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic", "10", "sep", "mtrr", "pge", "mca", "cmov", "pat", "pse36", "pn", "clflush", "20", "dts", "acpi", "mmx", "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "31" }; static int procfs_getonecpu(int, struct cpu_info *, char *, int *); /* * Linux-style /proc/cpuinfo. * Only used when procfs is mounted with -o linux. * * In the multiprocessor case, this should be a loop over all CPUs. */ int procfs_getcpuinfstr(char *bf, int *len) { struct cpu_info *ci; CPU_INFO_ITERATOR cii; int i = 0, used = *len, total = *len; *len = 0; for (CPU_INFO_FOREACH(cii, ci)) { if (procfs_getonecpu(i++, ci, bf, &used) == 0) { *len += used; total = 0; break; } total -= used; if (total > 0) { bf += used; *bf++ = '\n'; *len += used + 1; used = --total; if (used == 0) break; } else { *len += used; break; } } return total == 0 ? -1 : 0; } static int procfs_getonecpu(int xcpu, struct cpu_info *ci, char *bf, int *len) { int left, l, i; char featurebuf[256], *p; p = featurebuf; left = sizeof featurebuf; for (i = 0; i < 32; i++) { if (ci->ci_feature_flags & (1 << i)) { l = snprintf(p, left, "%s ", i386_features[i]); left -= l; p += l; if (left <= 0) break; } } p = bf; left = *len; l = snprintf(p, left, "processor\t: %d\n" "vendor_id\t: %s\n" "cpu family\t: %d\n" "model\t\t: %d\n" "model name\t: %s\n" "stepping\t: ", xcpu, (char *)ci->ci_vendor, cpuid_level >= 0 ? ((ci->ci_signature >> 8) & 15) : cpu_class + 3, cpuid_level >= 0 ? ((ci->ci_signature >> 4) & 15) : 0, cpu_brand_string ); left -= l; p += l; if (left <= 0) return 0; if (cpuid_level >= 0) l = snprintf(p, left, "%d\n", ci->ci_signature & 15); else l = snprintf(p, left, "unknown\n"); left -= l; p += l; if (left <= 0) return 0; if (ci->ci_data.cpu_cc_freq != 0) { uint64_t freq, fraq; freq = (ci->ci_data.cpu_cc_freq + 4999) / 1000000; fraq = ((ci->ci_data.cpu_cc_freq + 4999) / 10000) % 100; l = snprintf(p, left, "cpu MHz\t\t: %qd.%qd\n", freq, fraq); } else l = snprintf(p, left, "cpu MHz\t\t: unknown\n"); left -= l; p += l; if (left <= 0) return 0; l = snprintf(p, left, "fdiv_bug\t: %s\n" "fpu\t\t: %s\n" "fpu_exception\t: %s\n" "cpuid level\t: %d\n" "wp\t\t: %s\n" "flags\t\t: %s\n", i386_fpu_fdivbug ? "yes" : "no", i386_fpu_present ? "yes" : "no", i386_fpu_exception ? "yes" : "no", cpuid_level, (rcr0() & CR0_WP) ? "yes" : "no", featurebuf); if (l > left) return 0; *len = (p + l) - bf; return 1; } #ifdef __HAVE_PROCFS_MACHDEP void procfs_machdep_allocvp(struct vnode *vp) { struct pfsnode *pfs = vp->v_data; switch (pfs->pfs_type) { case Pmachdep_xmmregs: /* /proc/N/xmmregs = -rw------- */ pfs->pfs_mode = S_IRUSR|S_IWUSR; vp->v_type = VREG; break; default: panic("procfs_machdep_allocvp"); } } int procfs_machdep_rw(struct lwp *curl, struct lwp *l, struct pfsnode *pfs, struct uio *uio) { switch (pfs->pfs_type) { case Pmachdep_xmmregs: return (procfs_machdep_doxmmregs(curl, l, pfs, uio)); default: panic("procfs_machdep_rw"); } /* NOTREACHED */ return (EINVAL); } int procfs_machdep_getattr(struct vnode *vp, struct vattr *vap, struct proc *procp) { struct pfsnode *pfs = VTOPFS(vp); switch (pfs->pfs_type) { case Pmachdep_xmmregs: vap->va_bytes = vap->va_size = sizeof(struct xmmregs); break; default: panic("procfs_machdep_getattr"); } return (0); } int procfs_machdep_doxmmregs(struct lwp *curl, struct lwp *l, struct pfsnode *pfs, struct uio *uio) { return (process_machdep_doxmmregs(curl, l, uio)); } int procfs_machdep_validxmmregs(struct lwp *l, struct mount *mp) { return (process_machdep_validxmmregs(l->l_proc)); } #endif