+/* net.c
+ * Top-level network glue code
+ * NetWatch system management mode administration console
+ *
+ * Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved.
+ * This program is free software; you can redistribute and/or modify it under
+ * the terms found in the file LICENSE in the root of this source tree.
+ *
+ */
+
#include <pci.h>
-#include <io.h>
-#include <video_defines.h>
#include <smram.h>
#include <pci-bother.h>
#include <output.h>
#include <minilib.h>
+#include <tables.h>
+#include <lwip/init.h>
#include "net.h"
-#include "../aseg/keyboard.h"
+
+#include "lwip/opt.h"
+#include "lwip/def.h"
+#include "lwip/mem.h"
+#include "lwip/pbuf.h"
+#include "lwip/sys.h"
+#include <lwip/stats.h>
+#include <lwip/snmp.h>
+#include <lwip/dhcp.h>
+#include <lwip/tcp.h>
+#include "netif/etharp.h"
+#include "netif/ppp_oe.h"
static struct nic *_nic = 0x0;
+static struct netif _netif;
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)
+void eth_recv(struct nic *nic, struct pbuf *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]);
+ struct eth_hdr *ethhdr;
+
+ LINK_STATS_INC(link.recv);
+
+ ethhdr = p->payload;
+
+ switch (htons(ethhdr->type)) {
+ case ETHTYPE_IP:
+ case ETHTYPE_ARP:
+ if (_netif.input(p, &_netif) != ERR_OK)
+ {
+ LWIP_DEBUGF(NETIF_DEBUG, ("netdev_input: IP input error\n"));
+ pbuf_free(p);
+ }
break;
- case 0xFE:
- outb(0xCF9, 0x4); /* Reboot */
+
+ default:
+ outputf("Unhandled packet type %04x input", ethhdr->type);
+ pbuf_free(p);
break;
}
}
void eth_poll()
{
- 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;
+ static int ticks = 0;
+ int i = 15; /* Don't process more than 15 packets at a time; we don't want the host to get TOO badly slowed down... */
if (!_nic)
return;
+
+ smram_tseg_set_state(SMRAM_TSEG_OPEN);
+
+ if ((ticks % 1000) == 0) /* About a minute */
+ dhcp_coarse_tmr();
+ if ((ticks % 8) == 0) /* About 500msec*/
+ dhcp_fine_tmr();
+ if ((ticks % 4) == 0) /* About 250msec*/
+ tcp_tmr();
+ ticks++;
+
+ while (i > 0)
+ {
+ int n = _nic->recv(_nic);
+ i -= n;
+ if (n == 0)
+ break;
+ }
+}
- if (_nic->poll(_nic, 0)) {
- _nic->packet = packet;
- _nic->poll(_nic, 1);
+static err_t _transmit(struct netif *netif, struct pbuf *p)
+{
+ struct nic *nic = netif->state;
- packet_t * p = (packet_t *) packet;
+// outputf("NIC: Transmit 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;
+ nic->transmit(nic, p);
- 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;
+ LINK_STATS_INC(link.xmit);
+
+ return ERR_OK;
+}
+
+static err_t _init(struct netif *netif)
+{
+ struct nic *nic = netif->state;
- test[0] = pos >> 8;
- test[1] = pos & 0xFF;
- test[2] = base >> 8;
- test[3] = base & 0xFF;
+ LWIP_ASSERT("netif != NULL", (netif != NULL));
+
+#if LWIP_NETIF_HOSTNAME
+ netif->hostname = "netwatch";
+#endif
+
+ NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 100000000);
- smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
+ netif->name[0] = 'e';
+ netif->name[1] = 'n';
+ netif->output = etharp_output;
+ netif->linkoutput = _transmit;
- 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);
+ memcpy(netif->hwaddr, nic->hwaddr, 6);
+ netif->mtu = 1500;
+ netif->hwaddr_len = ETHARP_HWADDR_LEN;
+ netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+
+ return ERR_OK;
}
int eth_register(struct nic *nic)
{
+ static struct ip_addr ipa = { 0 } , netmask = { 0 } , gw = { 0 };
+
if (_nic)
return -1;
+ netif_add(&_netif, &ipa, &netmask, &gw, (void*)nic, _init, ethernet_input);
+ netif_set_default(&_netif);
+ netif_set_up(&_netif);
+ dhcp_start(&_netif);
_nic = nic;
return 0;
}
+typedef void(*thunk_t)();
+
+TABLE(thunk_t, protocols);
+
void eth_init()
{
+ int i;
+
/* Required for DMA to work. :( */
smram_tseg_set_state(SMRAM_TSEG_OPEN);
- pci_probe_driver(a3c90x_driver);
+
+ lwip_init();
+
+ for (i = 0; i < TABLE_LENGTH(protocols); i++)
+ protocols_table[i]();
}
git.joshuawise.com / netwatch.git / blobdiff