X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/31ddf9b375ddf1bd142750bc4762b3268e297619..2f2944bebf941f90361b47e4b0c4102da3bdc341:/net/net.c

diff --git a/net/net.c b/net/net.c
index 04eaff5..eac5d0e 100644
--- 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++) % 30)
-		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);
 }