Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / power / cpupower / debug / i386 / intel_gsic.c

diff --git a/kernel/tools/power/cpupower/debug/i386/intel_gsic.c b/kernel/tools/power/cpupower/debug/i386/intel_gsic.c
new file mode 100644 (file)
index 0000000..d032c82
--- /dev/null
+++ b/kernel/tools/power/cpupower/debug/i386/intel_gsic.c
@@ -0,0 +1,78 @@
+/*
+ *  (C) 2003  Bruno Ducrot
+ *  (C) 2004  Dominik Brodowski <linux@dominikbrodowski.de>
+ *
+ *  Licensed under the terms of the GNU GPL License version 2.
+ *
+ * Based on code found in
+ * linux/include/asm-i386/ist.h and linux/arch/i386/kernel/setup.c
+ * and originally developed by Andy Grover <andrew.grover@intel.com>
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <lrmi.h>
+
+int main (void)
+{
+       struct LRMI_regs        r;
+       int                     retval;
+
+       if (!LRMI_init())
+               return 0;
+
+       memset(&r, 0, sizeof(r));
+
+       r.eax = 0x0000E980;
+       r.edx = 0x47534943;
+
+       retval = LRMI_int(0x15, &r);
+
+       if (!retval) {
+               printf("Failed!\n");
+               return 0;
+       }
+       if (r.eax == 0x47534943) {
+               printf("BIOS supports GSIC call:\n");
+               printf("\tsignature: %c%c%c%c\n",
+                      (r.eax >> 24) & 0xff,
+                      (r.eax >> 16) & 0xff,
+                      (r.eax >> 8) & 0xff,
+                      (r.eax) & 0xff);
+               printf("\tcommand port = 0x%.4x\n",
+                      r.ebx & 0xffff);
+               printf("\tcommand =      0x%.4x\n",
+                      (r.ebx >> 16) & 0xffff);
+               printf("\tevent port =   0x%.8x\n", r.ecx);
+               printf("\tflags =        0x%.8x\n", r.edx);
+               if (((r.ebx >> 16) & 0xffff) != 0x82) {
+                       printf("non-default command value. If speedstep-smi "
+                              "doesn't work out of the box,\nyou may want to "
+                              "try out the default value by passing "
+                              "smi_cmd=0x82 to the module\n ON YOUR OWN "
+                              "RISK.\n");
+               }
+               if ((r.ebx & 0xffff) != 0xb2) {
+                       printf("non-default command port. If speedstep-smi "
+                              "doesn't work out of the box,\nyou may want to "
+                              "try out the default value by passing "
+                              "smi_port=0x82 to the module\n ON YOUR OWN "
+                              "RISK.\n");
+               }
+       } else {
+               printf("BIOS DOES NOT support GSIC call.  Dumping registers anyway:\n");
+               printf("eax = 0x%.8x\n", r.eax);
+               printf("ebx = 0x%.8x\n", r.ebx);
+               printf("ecx = 0x%.8x\n", r.ecx);
+               printf("edx = 0x%.8x\n", r.edx);
+               printf("Note also that some BIOS do not support the initial "
+                      "GSIC call, but the newer\nspeedstep-smi driver may "
+                      "work.\nFor this, you need to pass some arguments to "
+                      "the speedstep-smi driver:\n");
+               printf("\tsmi_cmd=0x?? smi_port=0x?? smi_sig=1\n");
+               printf("\nUnfortunately, you have to know what exactly are "
+                      "smi_cmd and smi_port, and this\nis system "
+                      "dependant.\n");
+       }
+       return 1;
+}