add magic reboot butan

[netwatch.git] / net / net.c

diff --git a/net/net.c b/net/net.c
index 13c16f24d97fd831b981c536df0d14dc52c784e7..eac5d0e0b4cb0e81285b646be2098340a9cf8c40 100644 (file)
--- a/net/net.c
+++ b/net/net.c
@@ -1,7 +1,12 @@
 #include <pci.h>
+#include <io.h>
+#include <video_defines.h>
+#include <smram.h>
 #include <pci-bother.h>
 #include <output.h>
+#include <minilib.h>
 #include "net.h"
+#include "../aseg/keyboard.h"
 
 static struct nic *_nic = 0x0;
 
@@ -9,33 +14,101 @@ extern struct pci_driver a3c90x_driver;
 
 static char test[1024] = {0};
 
+static char packet[4096] = {0};
+
+typedef struct packet_t {
+       char from[6];
+       char to[6];
+       unsigned short ethertype;
+       unsigned short datalen;
+       unsigned char command;
+       char data[];
+} packet_t;
+
+static unsigned char vga_read(unsigned char idx)
+{
+       outb(CRTC_IDX_REG, idx);
+       return inb(CRTC_DATA_REG);
+}
+
+static unsigned int vga_base()
+{
+       return (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 9)
+            + (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 1);
+}
+
+void handle_command(packet_t * p)
+{
+       uint16_t dl = htons(p->datalen);
+       int i;
+
+       outputf("NIC: Command: 0x%x, %d bytes", p->command, dl);
+
+       switch (p->command) {
+       case 0x42:
+               for (i = 0; i < dl; i++)
+                       kbd_inject_key(p->data[i]);
+               break;
+       case 0xFE:
+               outb(0xCF9, 0x4);       /* Reboot */
+               break;
+       }
+}
+
 void eth_poll()
 {
        int i;
-       static int c;
+//     static int c;
+       static short pos = 0x0;
+       unsigned short base = vga_base();
+       unsigned char *p = (unsigned char *)0xB8000;
+       smram_state_t old_state;
        
        if (!_nic)
                return;
 
-       _nic->poll(_nic, 0);
+       if (_nic->poll(_nic, 0)) {
+               _nic->packet = packet;
+               _nic->poll(_nic, 1);
+
+               packet_t * p = (packet_t *) packet;
+
+               outputf("NIC: Packet: %d 0x%x", _nic->packetlen, htons(p->ethertype));
+               if (htons(p->ethertype) == 0x1338) {
+                       if (htons(p->datalen) + sizeof(packet_t) > _nic->packetlen) {
+                               outputf("NIC: Malformed packet");
+                       } else {
+                               handle_command(p);
+                       }
+               }
+       }
+       smram_tseg_set_state(SMRAM_TSEG_OPEN);
+       old_state = smram_save_state();
+       
+//     if ((c++) % 2)
+//             return;
+
+       if (((base + 80*25*2)%0x8000) < base)
+       {
+               if ((pos > ((base + 80*25*2)%0x8000)) && (pos < base))
+                       pos = base;
+       } else if ((pos > base + 80*25*2) || (pos < base))
+               pos = base;
        
-       if ((c++) % 60)
-               return;
+       test[0] = pos >> 8;
+       test[1] = pos & 0xFF;
+       test[2] = base >> 8;
+       test[3] = base & 0xFF;
+
+       smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
        
-       for (i = 0; i < 1024; i++)
+       for (i = 4; i < 1024; i++)
        {
-               switch(i%5)
-               {
-               case 0: test[i] = 'H'; break;
-               case 1: test[i] = 'A'; break;
-               case 2: test[i] = 'R'; break;
-               case 3: test[i] = 'B'; break;
-               case 4: test[i] = 'L'; break;
-               }
+               test[i] = p[pos++];
+               pos %= 0x8000;
        }
-       outputf("eth_poll: Attempting to tx");
+       smram_restore_state(old_state);
        _nic->transmit("\x00\x03\x93\x87\x84\x8C", 0x1337, 1024, test);
-       outputf("eth_poll: tx complete");
 }
 
 int eth_register(struct nic *nic)
@@ -48,6 +121,7 @@ int eth_register(struct nic *nic)
 
 void eth_init()
 {
-       if (pci_probe_driver(a3c90x_driver))
-               outputf("found 3c90x, hopefully!");
+       /* Required for DMA to work. :( */
+       smram_tseg_set_state(SMRAM_TSEG_OPEN);
+       pci_probe_driver(a3c90x_driver);
 }