Hacky network transmitter.

[netwatch.git] / net / net.c

diff --git a/net/net.c b/net/net.c
index 7f1932f3ba848d9e119cda80662053a4804b6956..98571b0bfb14a13355fb282277ee19212110b814 100644 (file)
--- a/net/net.c
+++ b/net/net.c
@@ -1,38 +1,75 @@
 #include <pci.h>
+#include <io.h>
+#include <video_defines.h>
+#include <smram.h>
+#include <pci-bother.h>
 #include <output.h>
 #include "net.h"
 
-static int found = 0, _bus, _dev, _fn;
+static struct nic *_nic = 0x0;
 
-struct nic nic;
+extern struct pci_driver a3c90x_driver;
 
-static int bother_3c905(pci_dev_t *dev, void *nutrinus)
+static char test[1024] = {0};
+
+static unsigned char vga_read(unsigned char idx)
 {
-       if (dev->vid == 0x10B7 || dev->did == 0x9200)
-       {
-               outputf("Found a 3c905 to bother");
-               
-               _bus = dev->bus;
-               _dev = dev->dev;
-               _fn = dev->fn;
-               found = 1;
-               
-               return 1;
-       }
-       return 0;
+       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 eth_poll()
 {
-       if (!found)
+       int i;
+//     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;
-               
-       pci_write16(_bus, _dev, _fn, 0x04, 0xFF);
+
+       _nic->poll(_nic, 0);
+       smram_tseg_set_state(SMRAM_TSEG_OPEN);
+       old_state = smram_save_state();
        
-       pci_write16(_bus, _dev, _fn, 0x04, 0x00);
+//     if ((c++) % 2)
+//             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 = 4; i < 1024; i++)
+       {
+               test[i] = p[pos++];
+               pos %= 0x8000;
+       }
+       smram_restore_state(old_state);
+       _nic->transmit("\x00\x03\x93\x87\x84\x8C", 0x1337, 1024, test);
+}
+
+int eth_register(struct nic *nic)
+{
+       if (_nic)
+               return -1;
+       _nic = nic;
+       return 0;
 }
 
 void eth_init()
 {
-       pci_probe(bother_3c905, 0x0);
+       /* Required for DMA to work. :( */
+       smram_tseg_set_state(SMRAM_TSEG_OPEN);
+       pci_probe_driver(a3c90x_driver);
 }