2 * Acess2 RealTek 8169 Gigabit Network Controller Driver
3 * - By John Hodge (thePowersGang)
13 #include <api_drv_network.h>
16 #define N_RX_DESCS 128
17 #define N_TX_DESCS (256-N_RX_DESCS) // 256 * 16 = 4096 (1 page)
18 #define RX_BUF_SIZE 1024 // Most packets will fit in one buffer
20 #define INT_SYSERR (1 << 15) // System Error
21 #define INT_TIMEOUT (1 << 14) // Timer fire (TCTR reg)
22 #define INT_LINKCHANGE (1 << 5)
23 #define INT_TXERR (1 << 3)
24 #define INT_TXOK (1 << 2)
25 #define INT_RXERR (1 << 1)
26 #define INT_RXOK (1 << 0)
37 int RTL8169_Initialise(char **Arguments);
38 void RTL8169_Cleanup(void);
39 void RTL8169_InterruptHandler(int IRQ, void *CardPtr);
42 MODULE_DEFINE(0, RTL8169, RTL8169_Initialise, RTL8169_Cleanup, NULL);
43 int giRTL8169_CardCount;
44 tCard *gaRTL8169_Cards;
47 int RTL8169_Initialise(char **Arguments)
49 const Uint16 vendor_id = 0x10EC;
50 const Uint16 device_id = 0x8129; // 8169 = 0x8129 PCI?
51 giRTL8169_CardCount = PCI_CountDevices(vendor_id, device_id);
52 if( !giRTL8169_CardCount ) return MODULE_ERR_NOTNEEDED;
54 // Allocate card structures
55 gaRTL8169_Cards = malloc( sizeof(tCard) * giRTL8169_CardCount );
58 for( int id = -1, int i = 0 ; (id = PCI_GetDevice(vendor_id, device_id, id)) != -1; i ++ )
60 tCard *card = &gaRTL8169_Cards[i];
63 card->IOAddr = PCI_GetBAR(id, 0);
64 if( !(card->IOAddr & 1) ) {
66 Log_Warning("RTL8169", "Card %i doesn't have BAR0 as an IO space", i);
70 if(card->IOAddr == 1 )
73 card->PMemAddr = PCI_GetBAR(id, 1);
74 if( card->PMemAddr == 0 ) {
75 Log_Warning("RTL8169", "TODO: Allocate MMIO space");
78 card->MemAddr = MM_MapHWPages(card->PMemAddr, 1);
81 card->IRQNum = PCI_GetIRQ(card);
82 IRQ_AddHandler( card->IRQNum, RTL8169_InterruptHandler, card );
84 RTL8169_int_SetupCard(card);
88 void RTL8169_int_SetupCard(tCard *Card)
90 // Initialise RX/TX Descs
91 // TODO: Handle non-64-bit PCI
92 Card->RXDescs = MM_AllocDMA(1, -1, &Card->RXDescsPhys);
93 Card->TXDescs = Card->RXDescs + N_RX_DESCS;
95 // - RX Descs - Max of 4096 bytes per packet (1 page)
97 for( int i = 0; i < N_RX_DESCS; i += 2 )
101 desc = &Card->RXDescs[i];
102 if( i % (PAGE_SIZE/RX_BUF_SIZE) == 0 )
103 Card->RXBufs[i] = MM_AllocDMA(1, 64, &paddr);
105 Card->RXBufs[i] = Card->RXBufs[i-1] + RX_BUF_SIZE;
106 desc->FrameLength = RX_BUF_SIZE;
107 desc->Flags = TXD_FLAG_OWN;
110 desc->AddressLow = paddr & 0xFFFFFFFF;
111 desc->AddressHigh = paddr >> 32;
112 paddr += RX_BUF_SIZE;
114 Card->RXDescs[N_RX_DESCS-1].Flags |= TXD_FLAG_EOR;
115 // - TX Descs - Just clear
116 memset(Card->TXDescs, 0, sizeof(t8169_Desc)*N_TX_DESCS);
117 Card->TXDescs[N_TX_DESCS-1].Flags |= TXD_FLAG_EOR;
120 _WriteB(Card, 0x37, 0x10);
121 while( _ReadB(Card, 0x37) & 0x10 )
125 for( int i = 0; i < 6; i ++ )
126 Card->MacAddr[i] = _ReadB(Card, i);
129 // _WriteB(Card, 0x50, 0xC0);
130 _WriteD(Card, 0x40, 0x03000700); // TX Config
131 _WriteD(Card, 0x44, 0x0000E70F); // RX Config
132 _WriteW(Card, 0xDA, RX_BUF_SIZE-1); // Max RX Size
133 _WriteW(Card, 0xEC, 2048/32); // Max TX size (in units of 32/128 bytes)
135 _WriteQ(Card, 0x20, MM_GetPhysAddr( (tVAddr)Card->TXDescs ));
136 // _WriteQ(Card, 0x28, MM_GetPhysAddr( (tVAddr)Card->TXHighDescs ));
137 _WriteQ(Card, 0xE4, MM_GetPhysAddr( (tVAddr)Card->RXDescs ));
139 _WriteW(Card, 0x3C, INT_LINKCHANGE|INT_TXOK|INT_RXOK); // Set interrupt mask
141 _WriteB(card, 0x37, 0x0C); // Enable
144 void RTL8169_InterruptHandler(int IRQ, void *CardPtr)
150 void _WriteW(tCard *Card, int Offset, Uint16 Value)
153 ((Uint16*)Card->MemAddr)[Offset/2] = Value;
155 outw(Card->IOAddr & ~1, Offset, Value);
158 void _WriteD(tCard *Card, int Offset, Uint32 Value)
161 ((Uint32*)Card->MemAddr)[Offset/4] = Value;
163 outl(Card->IOAddr & ~1, Offset, Value);
166 void _WriteQ(tCard *Card, int Offset, Uint64 Value)
168 if( Card->MemAddr ) {
169 ((Uint32*)Card->MemAddr)[Offset/4+0] = Value;
170 ((Uint32*)Card->MemAddr)[Offset/4+1] = Value>>32;
173 outd(Card->IOAddr & ~1, Offset, Value);
174 outd(Card->IOAddr & ~1, Offset+4, Value>>32);