cpuid.lisp

   1 #|
   2 Copyright (c) 2005 Risto Laakso
   3 All rights reserved.
   4
   5 Redistribution and use in source and binary forms, with or without
   6 modification, are permitted provided that the following conditions
   7 are met:
   8 1. Redistributions of source code must retain the above copyright
   9    notice, this list of conditions and the following disclaimer.
  10 2. Redistributions in binary form must reproduce the above copyright
  11    notice, this list of conditions and the following disclaimer in the
  12    documentation and/or other materials provided with the distribution.
  13 3. The name of the author may not be used to endorse or promote products
  14    derived from this software without specific prior written permission.
  15
  16 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 |#
  27 (defpackage :cpuid (:use :cl))
  28 (in-package :cpuid)
  29
  30
  31 (defvar +cpu-std-feat-fields+
  32   #(:fpu :vme :de :pse :tsc :k86-msr :pae :mce :cmpxchg8b :apic :res10 :sysenter/exit :mtrr :gpe :mca :cmov :pat :pse-36 :psn :clflush :res20 :ds :acpi :mmx :fxsave/rstor :sse :sse2 :self-snoop :htt :tm :res30 :pbe))
  33
  34 (defvar +cpu-std-feat-fields-ecx+
  35   #(:sse3 :res1 :res2 :monitor :ds-cpl :res5 :res6 :eist :tm2 :res9 :cid :res11 :res12 :cmpxchg16b :stpm :res14 :res15
  36     0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0))
  37
  38 ;; low bits are mostly same as in std-feat, so skip them..
  39 (defvar +cpu-ext-feat-fields+
  40   #(0 1 2 3 4 5 6 7 8 9 10 :syscall/ret 12 13 14 15 16 17 18 19 :nx 21 :mmx-ext :mmx 24 25 26 27 28 :longmode/em64t :3dnow-ext :3dnow))
  41
  42
  43 (defvar *cpu-features* nil)
  44 (defvar *cpu-vendor* nil) ;; eg authenticamd
  45 (defvar *cpu-name* nil) ;; eg AMD Athlon XP
  46 (defvar *cpu-cache* nil)
  47
  48
  49 (defun inspect-cpu ()
  50
  51   (let ((array (make-array 8 :element-type '(unsigned-byte 16) :initial-element 0)) c d)
  52
  53     ;; vendor
  54
  55     (sb-sys:%primitive sb-vm::%read-cpu/x86 #x00000000 array)
  56
  57     (let ((temp (make-array 12 :element-type '(unsigned-byte 8) :initial-element 0)))
  58       (flet ((load-word (i u v) (setf (aref temp (+ i 3)) (ash (aref array u) -8)
  59                                       (aref temp (+ i 2)) (logand (aref array u) 255)
  60                                       (aref temp (+ i 1)) (ash (aref array v) -8)
  61                                       (aref temp (+ i 0)) (logand (aref array v) 255))))
  62       (loop for i from 0 below 12 by 4
  63             for (u v) in '((2 3) (6 7) (4 5))
  64             do (load-word i u v))
  65
  66       (setq *cpu-vendor* (map 'string #'code-char temp))))
  67
  68
  69     ;; std features
  70     (setq *cpu-features* nil)
  71
  72     (sb-sys:%primitive sb-vm::%read-cpu/x86 #x00000001 array)
  73
  74     (setq
  75 ;;     a (logior (ash (aref array 0) 16) (aref array 1))
  76 ;;     b (logior (ash (aref array 2) 16) (aref array 3))
  77      c (logior (ash (aref array 4) 16) (aref array 5))
  78      d (logior (ash (aref array 6) 16) (aref array 7)))
  79
  80     (loop for i from 0 below 32 do
  81           (if (= (ldb (byte 1 i) d) 1)
  82               (push (aref +cpu-std-feat-fields+ i) *cpu-features*)))
  83
  84     (loop for i from 0 below 32 do
  85           (if (= (ldb (byte 1 i) c) 1)
  86               (push (aref +cpu-std-feat-fields-ecx+ i) *cpu-features*))))
  87   )
  88
  89 (defun inspect-cpu-ext ()
  90   (let ((array (make-array 8 :element-type '(unsigned-byte 16) :initial-element 0))
  91         c d (max-ext-func 0))
  92
  93     ;; determine max ext func
  94     (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000000 array)
  95     (setq max-ext-func (logior (ash (aref array 0) 16) (aref array 1)))
  96
  97     ;; ext features (AMD/Intel)
  98     (if (>= max-ext-func #x80000001)
  99         (progn
 100           (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000001 array)
 101           (setq d (logior (ash (aref array 6) 16) (aref array 7)))
 102
 103           (loop for i from 0 below 32 do
 104                 (let ((flag (ldb (byte 1 i) d))
 105                       (feat (aref +cpu-ext-feat-fields+ i)))
 106                   (if (and (= flag 1) (keywordp feat))
 107                       (pushnew feat *cpu-features*))))))
 108
 109     ;; cpu name (AMD/Intel)
 110     (setq *cpu-name* nil)
 111     (if (>= max-ext-func #x80000004)
 112         (let ((cpuname #())
 113               (temp (make-array 16 :element-type '(unsigned-byte 8) :initial-element 0)))
 114           (flet ((load-word (i u v) (setf (aref temp (+ i 3)) (ash (aref array u) -8)
 115                                           (aref temp (+ i 2)) (logand (aref array u) 255)
 116                                           (aref temp (+ i 1)) (ash (aref array v) -8)
 117                                           (aref temp (+ i 0)) (logand (aref array v) 255))))
 118             (flet ((conc-word ()
 119                      (loop for i from 0 below 16 by 4
 120                            for (u v) in '((0 1) (2 3) (4 5) (6 7))
 121                            do
 122                            (load-word i u v))
 123                      (setq cpuname (concatenate '(simple-array (unsigned-byte 8) (*)) cpuname temp))))
 124
 125               (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000002 array) (conc-word)
 126               (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000003 array) (conc-word)
 127               (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000004 array) (conc-word)
 128               ))
 129
 130           ;; cut to null
 131           (if (position 0 cpuname)
 132               (setq cpuname (subseq cpuname 0 (position 0 cpuname))))
 133           ;; coerce to string
 134           (setq cpuname (map 'string #'code-char cpuname))
 135           (setq *cpu-name* cpuname)))
 136
 137     ;; cache (AMD)
 138     (setq *cpu-cache* nil)
 139     (if (>= max-ext-func #x80000005)
 140         (progn
 141           (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000005 array)
 142           (setq c (logior (ash (aref array 4) 16) (aref array 5))
 143                 d (logior (ash (aref array 6) 16) (aref array 7)))
 144
 145           (push (list :l1-data :size (* 1024 (ldb (byte 8 24) c))) *cpu-cache*)
 146           (push (list :l1-inst :size (* 1024 (ldb (byte 8 24) d))) *cpu-cache*)))
 147
 148
 149     (if (>= max-ext-func #x80000006)
 150         (progn
 151           (sb-sys:%primitive sb-vm::%read-cpu/x86 #x80000006 array)
 152           (setq c (logior (ash (aref array 4) 16) (aref array 5)))
 153           (push (list :l2 :size (* 1024 (ldb (byte 16 16) c))) *cpu-cache*)))
 154
 155     t))
 156
 157 (defun dump-cpu ()
 158
 159     ;; dump
 160
 161     (format t "~&")
 162     (format t "Vendor: ~A.~%" *cpu-vendor*)
 163     (format t "Features: ~S.~%" *cpu-features*)
 164     (format t "cpu: ~A, cache: ~S.~%" *cpu-name* *cpu-cache*)
 165     )