*/
#include <acess.h>
#include <proc.h>
+#include <desctab.h>
#include <mm_virt.h>
#include <errno.h>
#if USE_MP
// === CONSTANTS ===
#define SWITCH_MAGIC 0xFFFACE55 // There is no code in this area
+// Base is 1193182
#define TIMER_DIVISOR 11931 //~100Hz
// === IMPORTS ===
extern tGDT gGDT[];
+extern tIDT gIDT[];
extern void APStartup(); // 16-bit AP startup code
extern Uint GetEIP(); // start.asm
extern Uint32 gaInitPageDir[1024]; // start.asm
extern tThread *Threads_GetNextToRun(int CPU);
extern void Threads_Dump();
extern tThread *Threads_CloneTCB(Uint *Err, Uint Flags);
-extern void Isr7();
+extern void Isr8(); // Double Fault
// === PROTOTYPES ===
void ArchThreads_Init();
tThread *Proc_GetCurThread();
void Proc_ChangeStack();
int Proc_Clone(Uint *Err, Uint Flags);
+void Proc_StartProcess(Uint16 SS, Uint Stack, Uint Flags, Uint16 CS, Uint IP);
void Proc_Scheduler();
// === GLOBALS ===
// --- Multiprocessing ---
#if USE_MP
+volatile int giNumInitingCPUs = 0;
tMPInfo *gMPFloatPtr = NULL;
-tIOAPIC *gpMP_LocalAPIC = NULL;
+tAPIC *gpMP_LocalAPIC = NULL;
Uint8 gaAPIC_to_CPU[256] = {0};
tCPU gaCPUs[MAX_CPUS];
#else
tTSS gDoubleFault_TSS = {
.ESP0 = (Uint)&gaDoubleFaultStack[1023],
.SS0 = 0x10,
- .EIP = (Uint)Isr7
+ .CR3 = (Uint)gaInitPageDir - KERNEL_BASE,
+ .EIP = (Uint)Isr8,
+ .ESP = (Uint)&gaDoubleFaultStack[1023],
+ .CS = 0x08, .SS = 0x10,
+ .DS = 0x10, .ES = 0x10,
+ .FS = 0x10, .GS = 0x10,
};
// === CODE ===
Log("\t.CPUSignature = 0x%08x", ents->Proc.CPUSignature);
Log("\t.FeatureFlags = 0x%08x", ents->Proc.FeatureFlags);
+
+ if( !(ents->Proc.CPUFlags & 1) ) {
+ Log("DISABLED");
+ break;
+ }
+
// Check if there is too many processors
if(giNumCPUs >= MAX_CPUS) {
giNumCPUs ++; // If `giNumCPUs` > MAX_CPUS later, it will be clipped
giNumCPUs ++;
// Send IPI
- MP_StartAP( giNumCPUs-1 );
+ if( !(ents->Proc.CPUFlags & 2) )
+ {
+ MP_StartAP( giNumCPUs-1 );
+ }
break;
case 1: // Bus
if( giNumCPUs > MAX_CPUS ) {
Warning("Too many CPUs detected (%i), only using %i of them", giNumCPUs, MAX_CPUS);
+ giNumCPUs = MAX_CPUS;
}
+
+ while( giNumInitingCPUs )
+ MM_FinishVirtualInit();
Panic("Uh oh... MP Table Parsing is unimplemented\n");
}
#else
giNumCPUs = 1;
gTSSs = &gTSS0;
+ MM_FinishVirtualInit();
#endif
// Initialise Double Fault TSS
gGDT[5].BaseMid = (Uint)&gDoubleFault_TSS >> 16;
gGDT[5].BaseHi = (Uint)&gDoubleFault_TSS >> 24;
+ Log_Debug("Proc", "gIDT[8] = {OffsetLo:%04x, CS:%04x, Flags:%04x, OffsetHi:%04x}",
+ gIDT[8].OffsetLo, gIDT[8].CS, gIDT[8].Flags, gIDT[8].OffsetHi);
+ gIDT[8].OffsetLo = 0;
+ gIDT[8].CS = 5<<3;
+ gIDT[8].Flags = 0x8500;
+ gIDT[8].OffsetHi = 0;
+ Log_Debug("Proc", "gIDT[8] = {OffsetLo:%04x, CS:%04x, Flags:%04x, OffsetHi:%04x}",
+ gIDT[8].OffsetLo, gIDT[8].CS, gIDT[8].Flags, gIDT[8].OffsetHi);
+
+ //__asm__ __volatile__ ("xchg %bx, %bx");
+
#if USE_MP
// Initialise Normal TSS(s)
for(pos=0;pos<giNumCPUs;pos++)
*(Uint16*)(KERNEL_BASE|0x469) = 0xFFFF;
outb(0x70, 0x0F); outb(0x71, 0x0A); // Warm Reset
MP_SendIPI(gaCPUs[CPU].APICID, 0, 5);
+ giNumInitingCPUs ++;
}
void MP_SendIPI(Uint8 APICID, int Vector, int DeliveryMode)
{
- Uint32 addr = (Uint)gpMP_LocalAPIC + 0x20 + (APICID<<3);
-
- *(Uint32*)addr = ((DeliveryMode & 7) << 8) | (Vector & 0xFF);
+ Uint32 addr = (Uint)gpMP_LocalAPIC + 0x300;
+ Uint32 val;
+
+ // Hi
+ val = (Uint)APICID << 24;
+ Log("*%p = 0x%08x", addr+0x10, val);
+ *(Uint32*)(addr+0x10) = val;
+ // Low (and send)
+ val = ((DeliveryMode & 7) << 8) | (Vector & 0xFF);
+ Log("*%p = 0x%08x", addr, val);
+ *(Uint32*)addr = val;
}
#endif
tThread *Proc_GetCurThread()
{
#if USE_MP
- gpMP_LocalAPIC->Addr = 0;
- return gaCPUs[ gaAPIC_to_CPU[gpMP_LocalAPIC->Value.Byte] ].Current;
+ return gaCPUs[ gaAPIC_to_CPU[gpMP_LocalAPIC->ID.Val&0xFF] ].Current;
#else
return gCurrentThread;
#endif
while(*Bases)
*--stack = *Bases++;
*--stack = 0; // Return Address
- delta = (Uint)stack; // Reuse delta to save SP
- *--stack = ss; //Stack Segment
- *--stack = delta; //Stack Pointer
- *--stack = 0x0202; //EFLAGS (Resvd (0x2) and IF (0x20))
- *--stack = cs; //Code Segment
- *--stack = Entrypoint; //EIP
+ Proc_StartProcess(ss, (Uint)stack, 0x202, cs, Entrypoint);
+}
+
+void Proc_StartProcess(Uint16 SS, Uint Stack, Uint Flags, Uint16 CS, Uint IP)
+{
+ Uint *stack = (void*)Stack;
+ *--stack = SS; //Stack Segment
+ *--stack = Stack; //Stack Pointer
+ *--stack = Flags; //EFLAGS (Resvd (0x2) and IF (0x20))
+ *--stack = CS; //Code Segment
+ *--stack = IP; //EIP
//PUSHAD
*--stack = 0xAAAAAAAA; // eax
*--stack = 0xCCCCCCCC; // ecx
*--stack = 0x51515151; // esi
*--stack = 0xB4B4B4B4; // ebp
//Individual PUSHs
- *--stack = ss; // ds
- *--stack = ss; // es
- *--stack = ss; // fs
- *--stack = ss; // gs
+ *--stack = SS; // ds
+ *--stack = SS; // es
+ *--stack = SS; // fs
+ *--stack = SS; // gs
__asm__ __volatile__ (
"mov %%eax,%%esp;\n\t" // Set stack pointer
#if USE_MP
thread = gaCPUs[CPU].Current;
#else
- curThread = gCurrentThread;
+ thread = gCurrentThread;
#endif
// Reduce remaining quantum and continue timeslice if non-zero
#endif
// Update Kernel Stack pointer
- gTSSs[CPU].ESP0 = thread->KernelStack;
+ gTSSs[CPU].ESP0 = thread->KernelStack-4;
// Set address space
#if USE_PAE
#else
__asm__ __volatile__ ("mov %0, %%cr3"::"a"(thread->MemState.CR3));
#endif
+
+ #if 0
+ if(thread->SavedState.ESP > 0xC0000000
+ && thread->SavedState.ESP < thread->KernelStack-0x2000) {
+ Log_Warning("Proc", "Possible bad ESP %p (PID %i)", thread->SavedState.ESP);
+ }
+ #endif
+
// Switch threads
__asm__ __volatile__ (
"mov %1, %%esp\n\t" // Restore ESP
git.ucc.asn.au / tpg / acess2.git / blobdiff
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