From b518f39803eaaf0b25b95baf951b12ef4d5a727e Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Mon, 1 Oct 2018 14:37:18 +0200
Subject: struggling with interrupts and scheduler

---
 kernel/interrupts.c | 14 +-------------
 kernel/kernel.c     |  1 +
 kernel/kernel.h     |  2 +-
 kernel/log.c        |  4 ++--
 kernel/scheduler.c  |  6 ++++--
 kernel/smp.c        |  7 +++++++
 kernel/vmem.c       | 18 ++++++++++++++++--
 7 files changed, 32 insertions(+), 20 deletions(-)

(limited to 'kernel')

diff --git a/kernel/interrupts.c b/kernel/interrupts.c
index 8bff84b..49c0191 100644
--- a/kernel/interrupts.c
+++ b/kernel/interrupts.c
@@ -64,9 +64,7 @@ void interrupt_register(uint32_t irq, uint32_t func_addr)
  */
 uint32_t interrupt_handler(uint32_t esp, uint32_t irq)
 {
-    uint32_t cpu=smp_get(SMP_APIC_ID);
     uint32_t *stack;
-    static uint32_t timer=0;
 
     if(handlers[irq]!=0)
     {
@@ -90,17 +88,7 @@ uint32_t interrupt_handler(uint32_t esp, uint32_t irq)
 
         
 	case INTERRUPT_APIC_TIMER: // frequency is configured in smp.c (100hz)
-
-            if(cpu==0)
-            {
-                timer++;
-                if(timer==10){
-                    compositor_swap_buffers();
-                    esp=scheduler_run(esp,-1);
-                    timer=0;
-                }
-            }
-
+            esp=scheduler_run(esp,-1);
             apic_eoi(); 
 	    break;
 
diff --git a/kernel/kernel.c b/kernel/kernel.c
index 03dae1f..f55b948 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -159,5 +159,6 @@ void kernel_main(uint32_t eax,uint32_t ebx)
     }
 
     klog("Symmetric Multi Processing (SMP) start ... ");
+//    for(int i=1;i<cfg_acpi.processors;i++)apic_sipi(i,0x7);
     smp_bsp();
 }
diff --git a/kernel/kernel.h b/kernel/kernel.h
index 8baa57a..1973d52 100644
--- a/kernel/kernel.h
+++ b/kernel/kernel.h
@@ -41,7 +41,7 @@ REFERENCES
 #define MAX_TASKS 100
 #define MEM_PRINT_MEMORYMAP
 
-#define KMALLOC_MEM_SIZE    (1024*1024*1)  // 8MB for in kernel-memory
+#define KMALLOC_MEM_SIZE    (1024*1024*8)  // 8MB for in kernel-memory
 #define KMALLOC_BLOCK_SIZE  (1024*4)    // 4096 per block
 
 #define NUMBER_SPINLOCKS 16
diff --git a/kernel/log.c b/kernel/log.c
index 2e14dff..af6ebac 100644
--- a/kernel/log.c
+++ b/kernel/log.c
@@ -47,7 +47,7 @@ void log(bool color,char *module_name, int prio, char *format_string, ...)
     if(color) tfp_sprintf(buf_log,"\033[36;40m%s\033[31;40m %s:\033[37;40m %s\n",buf_time,module_name,buf_info);
     else tfp_sprintf(buf_log,"%s %s: %s\n",buf_time,module_name,buf_info);
 
-    spinlock_spin(SPINLOCK_LOG);
+//    spinlock_spin(SPINLOCK_LOG);
     log_string(buf_log);
-    spinlock_release(SPINLOCK_LOG);
+//    spinlock_release(SPINLOCK_LOG);
 }
diff --git a/kernel/scheduler.c b/kernel/scheduler.c
index ff46889..fa32ebc 100644
--- a/kernel/scheduler.c
+++ b/kernel/scheduler.c
@@ -123,6 +123,7 @@ static uint32_t scheduler_schedule(uint32_t idx)
             if(current_task[cpu]!=0)last_task[cpu]=current_task[cpu];
 	    current_task[cpu]=idx;
             
+            klog("%d",idx);
            // klog("%d idx %d",last_task[cpu],current_task[cpu]);
 
 	    install_tss(cpu,task_list[cpu][idx].esp0);
@@ -227,7 +228,7 @@ void scheduler_func()
     }
 }
 
-volatile int add_task(uint32_t parent_pid,uint32_t vmem, bool thread)
+volatile int add_task(uint32_t parent_pid,uint32_t vmem, bool thread, char *name)
 {
     static bool first=true;
 
@@ -270,7 +271,7 @@ volatile int add_task(uint32_t parent_pid,uint32_t vmem, bool thread)
             if(!thread&&first)
             {
                 compositor_add_window(vmem);
-                //first=false;
+                first=false;
             }
 
 	    return task_list[cpu][i].pid;
@@ -320,6 +321,7 @@ void task_syscall_worker()
 	x86_sti();
 
 	if(wake)scheduler_wake_all();
+        if(cpu==0)compositor_swap_buffers();
 
 	for(int i=0;i<MAX_TASKS;i++)
 	{
diff --git a/kernel/smp.c b/kernel/smp.c
index 1b06352..0438db8 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -67,6 +67,13 @@ void run_smp()
     smp_set(1000,'a'+apic_id());
     smp_set(SMP_SCHEDULER_INIT,1);
 
+    if(apic_id()==0)
+    {
+//        apic_sipi(1,0x7);
+//        apic_sipi(2,0x7);
+//        apic_sipi(3,0x7);
+    }
+
     x86_sti();
 
     while(1)asm("hlt"); // wait for scheduler to kick in
diff --git a/kernel/vmem.c b/kernel/vmem.c
index f6592b3..a1ee0e2 100644
--- a/kernel/vmem.c
+++ b/kernel/vmem.c
@@ -343,7 +343,13 @@ void vmem_free_space_dir(pdirectory *dir,bool stack_only)
 
 		if(src_pd)
 		{
+                    if(virt>=VMEM_USER_FRAMEBUFFER&&virt<VMEM_USER_FRAMEBUFFER+VMEM_USER_FRAMEBUFFER_PAGES*4096)
+                    {
+                    }
+                    else
+                    {
 		    mem_free_block(src_phys);
+                    }
 		}
 
 		virt+=4096;
@@ -368,7 +374,7 @@ pdirectory* vmem_new_space_dir(pdirectory *copy_dir,bool stack_only)
 
     if(!stack_only)
     {
-        vmem_add_alloc(dir,VMEM_USER_FRAMEBUFFER,VMEM_USER_FRAMEBUFFER_PAGES,true); /// each new process gets a 640x480x32 area
+     // temp disable //   vmem_add_alloc(dir,VMEM_USER_FRAMEBUFFER,VMEM_USER_FRAMEBUFFER_PAGES,true); /// each new process gets a 640x480x32 area
 	vmem_add_alloc(dir,VMEM_USER_PROG,VMEM_USER_PROG_PAGES,true); 
 	vmem_add_alloc(dir,VMEM_USER_ENV,1,true); 
     }
@@ -405,7 +411,7 @@ pdirectory* vmem_new_space_dir(pdirectory *copy_dir,bool stack_only)
                             (
                              virt==VMEM_USER_ENV
                              ||(virt>=VMEM_USER_PROG&&virt<VMEM_USER_PROG+VMEM_USER_PROG_PAGES*4096)
-                             ||(virt>=VMEM_USER_FRAMEBUFFER&&virt<VMEM_USER_FRAMEBUFFER+VMEM_USER_FRAMEBUFFER_PAGES*4096)
+//                             ||(virt>=VMEM_USER_FRAMEBUFFER&&virt<VMEM_USER_FRAMEBUFFER+VMEM_USER_FRAMEBUFFER_PAGES*4096)
                             )
                       )
                     {
@@ -414,6 +420,13 @@ pdirectory* vmem_new_space_dir(pdirectory *copy_dir,bool stack_only)
                     }
                     else
                     {
+                             if(virt>=VMEM_USER_FRAMEBUFFER&&virt<VMEM_USER_FRAMEBUFFER+VMEM_USER_FRAMEBUFFER_PAGES*4096)
+                            {
+                                // and for now we all share this! //
+                            vmem_add_remap(dir,src_phys,virt,1,true);
+                            }
+                             else{
+                    
                     
                         //klog("copy virt: %x / phys: %x -> %x",virt,src_phys,dst_phys);
                     
@@ -427,6 +440,7 @@ pdirectory* vmem_new_space_dir(pdirectory *copy_dir,bool stack_only)
                         x86_invlpg(VMEM_COPY_PAGE+4096); // refresh TLB 
 
                         memcpy(VMEM_COPY_PAGE+4096,VMEM_COPY_PAGE,4096);
+                             }
                     }
                 }
 		virt+=4096;
-- 
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