Files for Part 18, https://www.youtube.com/watch?v=DrZIkxqtdYc

include/drivers/amd_am79c973.h

@@ -71,7 +71,8 @@ namespace myos
             int Reset();
             common::uint32_t HandleInterrupt(common::uint32_t esp);
 
-
+            void Send(common::uint8_t* buffer, int count);
+            void Receive();
         };
 
 

include/drivers/driver.h

@@ -20,7 +20,7 @@ namespace myos
 
         class DriverManager
         {
-        private:
+        public:
             Driver* drivers[265];
             int numDrivers;
 

src/drivers/amd_am79c973.cpp

@@ -108,6 +108,7 @@ int amd_am79c973::Reset()
 
 
 void printf(char*);
+void printfHex(uint8_t);
 
 uint32_t amd_am79c973::HandleInterrupt(common::uint32_t esp)
 {
@@ -120,15 +121,66 @@ uint32_t amd_am79c973::HandleInterrupt(common::uint32_t esp)
     if((temp & 0x2000) == 0x2000) printf("AMD am79c973 COLLISION ERROR\n");
     if((temp & 0x1000) == 0x1000) printf("AMD am79c973 MISSED FRAME\n");
     if((temp & 0x0800) == 0x0800) printf("AMD am79c973 MEMORY ERROR\n");
-    if((temp & 0x0400) == 0x0400) printf("AMD am79c973 DATA RECEVED\n");
+    if((temp & 0x0400) == 0x0400) Receive();
     if((temp & 0x0200) == 0x0200) printf("AMD am79c973 DATA SENT\n");
 
     // acknoledge
     registerAddressPort.Write(0);
     registerDataPort.Write(temp);
 
-    if((temp & 0x0200) == 0x0200) printf("AMD am79c973 INIT DONE\n");
+    if((temp & 0x0100) == 0x0100) printf("AMD am79c973 INIT DONE\n");
 
     return esp;
 }
-
+
+
+void amd_am79c973::Send(uint8_t* buffer, int size)
+{
+    int sendDescriptor = currentSendBuffer;
+    currentSendBuffer = (currentSendBuffer + 1) % 8;
+
+    if(size > 1518)
+        size = 1518;
+
+    for(uint8_t *src = buffer + size -1,
+                *dst = (uint8_t*)(sendBufferDescr[sendDescriptor].address + size -1);
+                src >= buffer; src--, dst--)
+        *dst = *src;
+
+    sendBufferDescr[sendDescriptor].avail = 0;
+    sendBufferDescr[sendDescriptor].flags2 = 0;
+    sendBufferDescr[sendDescriptor].flags = 0x8300F000
+                                          | ((uint16_t)((-size) & 0xFFF));
+    registerAddressPort.Write(0);
+    registerDataPort.Write(0x48);
+}
+
+void amd_am79c973::Receive()
+{
+    printf("AMD am79c973 DATA RECEIVED\n");
+
+    for(; (recvBufferDescr[currentRecvBuffer].flags & 0x80000000) == 0;
+        currentRecvBuffer = (currentRecvBuffer + 1) % 8)
+    {
+        if(!(recvBufferDescr[currentRecvBuffer].flags & 0x40000000)
+         && (recvBufferDescr[currentRecvBuffer].flags & 0x03000000) == 0x03000000) 
+
+        {
+            uint32_t size = recvBufferDescr[currentRecvBuffer].flags & 0xFFF;
+            if(size > 64) // remove checksum
+                size -= 4;
+
+            uint8_t* buffer = (uint8_t*)(recvBufferDescr[currentRecvBuffer].address);
+
+            for(int i = 0; i < size; i++)
+            {
+                printfHex(buffer[i]);
+                printf(" ");
+            }
+        }
+
+        recvBufferDescr[currentRecvBuffer].flags2 = 0;
+        recvBufferDescr[currentRecvBuffer].flags = 0x8000F7FF;
+    }
+}
+

src/kernel.cpp

@@ -12,6 +12,8 @@
 #include <gui/window.h>
 #include <multitasking.h>
 
+#include <drivers/amd_am79c973.h>
+
 
 // #define GRAPHICSMODE
 
@@ -188,7 +190,7 @@ extern "C" void kernelMain(const void* multiboot_structure, uint32_t /*multiboot
     printfHex(((size_t)allocated >> 8 ) & 0xFF);
     printfHex(((size_t)allocated      ) & 0xFF);
     printf("\n");
-
+        
     TaskManager taskManager;
     /*
     Task task1(&gdt, taskA);
@@ -242,6 +244,11 @@ extern "C" void kernelMain(const void* multiboot_structure, uint32_t /*multiboot
         desktop.AddChild(&win2);
     #endif
 
+
+
+    amd_am79c973* eth0 = (amd_am79c973*)(drvManager.drivers[2]);
+    eth0->Send((uint8_t*)"Hello Network", 13);
+
 
     interrupts.Activate();