resources/ne2k.cpp

   1 /* Quarn OS
   2  *
   3  * NE2000 ethernet card
   4  *
   5  * Copyright (C) 2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "ne2k.h"
  24 #include "pci.h"
  25
  26 #include "manes/manec.h"
  27
  28 using namespace resources;
  29
  30 void get_mac_addr(u8 *mac);
  31 void ne2k_pci_init(pci_did pciaddr);
  32 void ne2k_pci_send_packet(pci_did pciaddr, u8 *buff, u16 len);
  33
  34 p<net::nic> faar;
  35
  36 bool ne2k::init_device(p<did> id) {
  37         device_id = id;
  38         faar = this;
  39         ne2k_pci_init(*id.cast<pci_did>());
  40         return true;
  41 }
  42
  43 bool ne2k::check_device(p<did> id) {
  44         p<pci_did> pid = id.cast<pci_did>();
  45
  46         if (!pid.valid())
  47                 return false;
  48
  49         /* It must be an ethernet card */
  50         unsigned int devclass = pid->get_bus().cast<pci>()->get_devclass(id) >> 8;
  51         if (devclass != 0x0200)
  52                 return false;
  53
  54         unsigned int devid = pid->get_bus().cast<pci>()->get_devid(id);
  55         /* It must be a *compatible* ethernet card (for example Realtek 8029) */
  56         if (devid != 0x802910ec)
  57                 return false;
  58
  59         return true;
  60 }
  61
  62 void ne2k::send_data(const buffer &x) {
  63         ne2k_pci_send_packet(*device_id.cast<pci_did>(), (u8*)x.get_address(), x.get_size());
  64 }
  65
  66
  67 net::mac_addr ne2k::get_haddr() const {
  68         u8 addr[6];
  69         get_mac_addr(addr);
  70         return net::mac_addr::from_be(*(u32*)addr, ((u16*)addr)[2]);
  71 }
  72
  73 void ne2k::register_type() {
  74         delegate<bool, p<did> > chk;
  75         chk.function(&ne2k::check_device);
  76         manes::manec::get()->register_driver<ne2k>("ne2k", "nic", chk);
  77 }