Modules/Network/RTL8139/rtl8139.c

   1 /*
   2  * Acess2 RTL8139 Driver
   3  * - By John Hodge (thePowersGang)
   4  */
   5 #define DEBUG   0
   6 #define VERSION ((0<<8)|50)
   7 #include <acess.h>
   8 #include <modules.h>
   9 #include <fs_devfs.h>
  10 #include <drv_pci.h>
  11 #include <tpl_drv_network.h>
  12
  13 // === CONSTANTS ===
  14 enum eRTL8139_Regs
  15 {
  16         MAC0, MAC1, MAC2,
  17         MAC3, MAC4, MAC5,
  18         MAR0    = 0x08,
  19         MAR1, MAR2, MAR3,
  20         MAR4, MAR5, MAR6, MAR7,
  21
  22         RBSTART = 0x30, //!< Recieve Buffer Start (DWord)
  23         // 0x31, 0x32, 0x33
  24
  25         // ??, ??, ??, RST, RE, TE, ??, ??
  26         CMD     = 0x37,
  27         IMR     = 0x3C,
  28         ISR     = 0x3E,
  29
  30         RCR     = 0x44,
  31
  32         CONFIG1 = 0x52
  33 };
  34
  35 // === TYPES ===
  36 typedef struct sCard
  37 {
  38         Uint16  IOBase;
  39         Uint8   IRQ;
  40
  41          int    NumWaitingPackets;
  42
  43         void    *ReceiveBuffer;
  44         tPAddr  PhysReceiveBuffer;
  45
  46         char    Name[2];
  47         tVFS_Node       Node;
  48         Uint8   MacAddr[6];
  49 }       tCard;
  50
  51 // === PROTOTYPES ===
  52  int    RTL8139_Install(char **Options);
  53 char    *RTL8139_ReadDir(tVFS_Node *Node, int Pos);
  54 tVFS_Node       *RTL8139_FindDir(tVFS_Node *Node, const char *Filename);
  55  int    RTL8139_RootIOCtl(tVFS_Node *Node, int ID, void *Arg);
  56 Uint64  RTL8139_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
  57 Uint64  RTL8139_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
  58 void    RTL8139_IRQHandler(int Num);
  59
  60 // === GLOBALS ===
  61 MODULE_DEFINE(0, VERSION, RTL8139, RTL8139_Install, NULL, NULL);
  62 tDevFS_Driver   gRTL8139_DriverInfo = {
  63         NULL, "RTL8139",
  64         {
  65         .NumACLs = 1,
  66         .ACLs = &gVFS_ACL_EveryoneRX,
  67         .Flags = VFS_FFLAG_DIRECTORY,
  68         .ReadDir = RTL8139_ReadDir,
  69         .FindDir = RTL8139_FindDir,
  70         .IOCtl = RTL8139_RootIOCtl
  71         }
  72 };
  73  int    giRTL8139_CardCount;
  74 tCard   *gpRTL8139_Cards;
  75
  76 // === CODE ===
  77 /**
  78  * \brief Installs the RTL8139 Driver
  79  */
  80 int RTL8139_Install(char **Options)
  81 {
  82          int    id = -1;
  83          int    i = 0;
  84         Uint16  base;
  85
  86         giRTL8139_CardCount = PCI_CountDevices( 0x10EC, 0x8139, 0 );
  87
  88         gpRTL8139_Cards = calloc( giRTL8139_CardCount, sizeof(tCard) );
  89
  90
  91         while( (id = PCI_GetDevice(0x10EC, 0x8139, 0, id)) != -1 )
  92         {
  93                 base = PCI_AssignPort( id, 0, 0x100 );
  94                 gpRTL8139_Cards[i].IOBase = base;
  95                 gpRTL8139_Cards[i].IRQ = PCI_GetIRQ( id );
  96
  97                 // Install IRQ Handler
  98                 IRQ_AddHandler(gpRTL8139_Cards[ k ].IRQ, RTL8136_IRQHandler);
  99
 100                 // Power on
 101                 outb( base + CONFIG1, 0x00 );
 102
 103                 // Reset (0x10 to CMD)
 104                 outb( base + CMD, 0x10 );
 105                 while( inb(base + CMD) & 0x10 ) ;
 106
 107                 // Set up recieve buffer
 108                 // - Allocate 3 pages below 4GiB for the recieve buffer (Allows 8k+16+1500)
 109                 gpRTL8139_Cards[i].ReceiveBuffer = MM_AllocDMA( 3, 32, &gpRTL8139_Cards[i].PhysReceiveBuffer );
 110                 outl(base + RBSTART, (Uint32)gpRTL8139_Cards[i].PhysReceiveBuffer);
 111                 // Set IMR to Transmit OK and Receive OK
 112                 outw(base + IMR, 0x5);
 113
 114                 // Set recieve buffer size and recieve mask
 115                 // - Bit 7 being unset tells the card to overflow the recieve buffer if needed
 116                 //   (i.e. when the packet starts at the end of the bufffer, it overflows up
 117                 //    to 1500 bytes)
 118                 outl(base + RCR, 0x0F);
 119
 120                 // Recive Enable and Transmit Enable
 121                 outb(base + CMD, 0x0C);
 122
 123                 // Get the card's MAC address
 124                 gpRTL8139_Cards[ i ].MacAddr[0] = inb(base+MAC0);
 125                 gpRTL8139_Cards[ i ].MacAddr[1] = inb(base+MAC1);
 126                 gpRTL8139_Cards[ i ].MacAddr[2] = inb(base+MAC2);
 127                 gpRTL8139_Cards[ i ].MacAddr[3] = inb(base+MAC3);
 128                 gpRTL8139_Cards[ i ].MacAddr[4] = inb(base+MAC4);
 129                 gpRTL8139_Cards[ i ].MacAddr[5] = inb(base+MAC5);
 130
 131                 // Set VFS Node
 132                 gpRTL8139_Cards[ i ].Name[0] = '0'+i;
 133                 gpRTL8139_Cards[ i ].Name[1] = '\0';
 134                 gpRTL8139_Cards[ i ].Node.ImplPtr = &gpRTL8139_Cards[ i ];
 135                 gpRTL8139_Cards[ i ].Node.NumACLs = 0;
 136                 gpRTL8139_Cards[ i ].Node.CTime = now();
 137                 gpRTL8139_Cards[ i ].Node.Write = RTL8139_Write;
 138                 gpRTL8139_Cards[ i ].Node.Read = RTL8139_Read;
 139                 gpRTL8139_Cards[ i ].Node.IOCtl = RTL8139_IOCtl;
 140
 141                 Log_Log("RTL8139", "Card %i 0x%04x %02x:%02x:%02x:%02x:%02x:%02x",
 142                         i, base,
 143                         gpRTL8139_Cards[ i ].MacAddr[0], gpRTL8139_Cards[ i ].MacAddr[1],
 144                         gpRTL8139_Cards[ i ].MacAddr[2], gpRTL8139_Cards[ i ].MacAddr[3],
 145                         gpRTL8139_Cards[ i ].MacAddr[4], gpRTL8139_Cards[ i ].MacAddr[5]
 146                         );
 147
 148                 i ++;
 149         }
 150         return MODULE_ERR_OK;
 151 }
 152
 153 // --- Root Functions ---
 154 char *RTL8139_ReadDir(tVFS_Node *Node, int Pos)
 155 {
 156         if( Pos < 0 || Pos > giRTL8139_CardCount )      return NULL;
 157
 158         return strdup( gpRTL8139_Cards[Pos].Name );
 159 }
 160
 161 tVFS_Node *RTL8139_FindDir(tVFS_Node *Node, const char *Filename)
 162 {
 163         //TODO: It might be an idea to supprt >10 cards
 164         if(Filename[0] == '\0' || Filename[0] != '\0')  return NULL;
 165         if(Filename[0] < '0' || Filename[0] > '9')      return NULL;
 166         return &gpRTL8139_Cards[ Filename[0]-'0' ].Node;
 167 }
 168
 169 const char *csaRTL8139_RootIOCtls[] = {DRV_IOCTLNAMES, NULL};
 170 int RTL8139_RootIOCtl(tVFS_Node *Node, int ID, void *Arg)
 171 {
 172         switch(ID)
 173         {
 174         BASE_IOCTLS(DRV_TYPE_NETWORK, "RTL8139", VERSION, csaRTL8139_RootIOCtls);
 175         }
 176         return 0;
 177 }
 178
 179 // --- File Functions ---
 180 Uint64 RTL8139_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
 181 {
 182         return 0;
 183 }
 184
 185 Uint64 RTL8139_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
 186 {
 187         return 0;
 188 }
 189
 190 const char *csaRTL8139_NodeIOCtls[] = {DRV_IOCTLNAMES, NULL};
 191 int RTL8139_IOCtl(tVFS_Node *Node, int ID, void *Arg)
 192 {
 193         switch(ID)
 194         {
 195         BASE_IOCTLS(DRV_TYPE_NETWORK, "RTL8139", VERSION, csaRTL8139_NodeIOCtls);
 196         }
 197         return 0;
 198 }