hal/halx86/mp/processor_mp.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            hal/halx86/mp/processor_mp.c
   5  * PURPOSE:         Intel MultiProcessor specification support
   6  * PROGRAMMER:      David Welch (welch@cwcom.net)
   7  *                  Casper S. Hornstrup (chorns@users.sourceforge.net)
   8  * NOTES:           Parts adapted from linux SMP code
   9  * UPDATE HISTORY:
  10  *     22/05/1998  DW   Created
  11  *     12/04/2001  CSH  Added MultiProcessor specification support
  12  */
  13
  14 /* INCLUDES *****************************************************************/
  15
  16 #include <hal.h>
  17 #define NDEBUG
  18 #include <debug.h>
  19
  20 KAFFINITY HalpActiveProcessors, HalpDefaultInterruptAffinity;
  21
  22 /* PRIVATE FUNCTIONS *********************************************************/
  23
  24 VOID
  25 NTAPI
  26 HaliHaltSystem(VOID)
  27 {
  28     /* Disable interrupts and halt the CPU */
  29     _disable();
  30     __halt();
  31 }
  32
  33 /* FUNCTIONS *****************************************************************/
  34
  35 VOID NTAPI
  36 HalInitializeProcessor(ULONG ProcessorNumber,
  37                        PLOADER_PARAMETER_BLOCK LoaderBlock)
  38 {
  39    ULONG CPU;
  40
  41    DPRINT("HalInitializeProcessor(%x %x)\n", ProcessorNumber, LoaderBlock);
  42
  43    CPU = ThisCPU();
  44    if (OnlineCPUs & (1 << CPU))
  45    {
  46       ASSERT(FALSE);
  47    }
  48
  49    if (ProcessorNumber == 0)
  50    {
  51       HaliInitBSP();
  52    }
  53    else
  54    {
  55       APICSetup();
  56
  57       DPRINT("CPU %d says it is now booted.\n", CPU);
  58
  59       APICCalibrateTimer(CPU);
  60    }
  61
  62    /* This processor is now booted */
  63    CPUMap[CPU].Flags |= CPU_ENABLED;
  64    OnlineCPUs |= (1 << CPU);
  65
  66    /* Setup busy waiting */
  67    //HalpCalibrateStallExecution();
  68 }
  69
  70 BOOLEAN NTAPI
  71 HalAllProcessorsStarted (VOID)
  72 {
  73     ULONG CPUs = 0, i;
  74
  75     DPRINT("HalAllProcessorsStarted()\n");
  76     for (i = 0; i < 32; i++)
  77     {
  78        if (OnlineCPUs & (1 << i))
  79        {
  80           CPUs++;
  81        }
  82     }
  83     if (CPUs > CPUCount)
  84     {
  85        ASSERT(FALSE);
  86     }
  87     else if (CPUs == CPUCount)
  88     {
  89
  90        IOAPICEnable();
  91        IOAPICSetupIds();
  92        if (CPUCount > 1)
  93        {
  94           APICSyncArbIDs();
  95        }
  96        IOAPICSetupIrqs();
  97
  98        return TRUE;
  99     }
 100     return FALSE;
 101 }
 102
 103 BOOLEAN
 104 NTAPI
 105 HalStartNextProcessor(
 106     IN struct _LOADER_PARAMETER_BLOCK *LoaderBlock,
 107     IN PKPROCESSOR_STATE ProcessorState)
 108 {
 109    ULONG CPU;
 110
 111    DPRINT("HalStartNextProcessor(%x %x)\n", LoaderBlock, ProcessorState);
 112
 113    for (CPU = 0; CPU < CPUCount; CPU++)
 114    {
 115       if (!(OnlineCPUs & (1<<CPU)))
 116       {
 117          break;
 118       }
 119    }
 120
 121    if (CPU >= CPUCount)
 122    {
 123       ASSERT(FALSE);
 124    }
 125
 126    DPRINT1("Attempting to boot CPU %d\n", CPU);
 127
 128    HaliStartApplicationProcessor(CPU, (ULONG)ProcessorState);
 129
 130    return TRUE;
 131 }
 132
 133 VOID
 134 NTAPI
 135 HalProcessorIdle(VOID)
 136 {
 137     UNIMPLEMENTED;
 138 }
 139
 140 /* EOF */