* - By John Hodge (thePowersGang)
*/
#define DEBUG 0
-#define VERSION ((0<<8)|50)
+#define VERSION ((0<<8)|20)
#include <acess.h>
#include <modules.h>
#include <fs_devfs.h>
#include <semaphore.h>
// === CONSTANTS ===
+#define VENDOR_ID 0x10EC
+#define DEVICE_ID 0x8139
+
enum eRTL8139_Regs
{
// MAC Address
char *TransmitBuffers[4];
tPAddr PhysTransmitBuffers[4];
- BOOL TransmitInUse; // Flags for each transmit descriptor
+ tMutex TransmitInUse[4];
+ tMutex CurTXProtector; //!< Protects \a .CurTXDescriptor
+ int CurTXDescriptor;
char Name[2];
tVFS_Node Node;
Uint16 base;
tCard *card;
- giRTL8139_CardCount = PCI_CountDevices( 0x10EC, 0x8139, 0 );
+ giRTL8139_CardCount = PCI_CountDevices(VENDOR_ID, DEVICE_ID);
+ Log_Debug("RTL8139", "%i cards", giRTL8139_CardCount);
- gaRTL8139_Cards = calloc( giRTL8139_CardCount, sizeof(tCard) );
+ if( giRTL8139_CardCount == 0 ) return MODULE_ERR_NOTNEEDED;
+ gaRTL8139_Cards = calloc( giRTL8139_CardCount, sizeof(tCard) );
- while( (id = PCI_GetDevice(0x10EC, 0x8139, 0, id)) != -1 )
+ //while( (id = PCI_GetDevice(0x10EC, 0x8139, 0, id)) != -1 )
+ while( (id = PCI_GetDevice(VENDOR_ID, DEVICE_ID, i)) != -1 )
{
- base = PCI_AssignPort( id, 0, 0x100 );
card = &gaRTL8139_Cards[i];
+ base = PCI_GetBAR( id, 0 );
+ if( !(base & 1) ) {
+ Log_Warning("RTL8139", "Driver does not support MMIO, skipping card");
+ card->IOBase = 0;
+ card->IRQ = 0;
+ continue ;
+ }
+ base &= ~1;
card->IOBase = base;
card->IRQ = PCI_GetIRQ( id );
// Set up recieve buffer
// - Allocate 3 pages below 4GiB for the recieve buffer (Allows 8k+16+1500)
card->ReceiveBuffer = (void*)MM_AllocDMA( 3, 32, &card->PhysReceiveBuffer );
+ card->ReceiveBufferLength = 8*1024;
outd(base + RBSTART, (Uint32)card->PhysReceiveBuffer);
+ outd(base + CBA, 0);
+ outd(base + CAPR, 0);
// Set IMR to Transmit OK and Receive OK
outw(base + IMR, 0x5);
card->TransmitBuffers[1] = card->TransmitBuffers[0] + 0x800;
card->PhysTransmitBuffers[1] = card->PhysTransmitBuffers[0] + 0x800;
- card->TransmitBuffers[2] = (void*)MM_AllocDMA( 1, 32, &card->PhysTransmitBuffers[1] );
+ card->TransmitBuffers[2] = (void*)MM_AllocDMA( 1, 32, &card->PhysTransmitBuffers[2] );
card->TransmitBuffers[3] = card->TransmitBuffers[2] + 0x800;
card->PhysTransmitBuffers[3] = card->PhysTransmitBuffers[2] + 0x800;
outd(base + TSAD3, card->PhysTransmitBuffers[3]);
// Set recieve buffer size and recieve mask
- // - Bit 7 being unset tells the card to overflow the recieve buffer if needed
+ // - Bit 7 being set tells the card to overflow the recieve buffer if needed
// (i.e. when the packet starts at the end of the bufffer, it overflows up
// to 1500 bytes)
- outd(base + RCR, 0x0F);
+ outd(base + RCR, 0x8F);
// Recive Enable and Transmit Enable
outb(base + CMD, 0x0C);
card->Node.Read = RTL8139_Read;
card->Node.IOCtl = RTL8139_IOCtl;
- Log_Log("RTL8139", "Card %i 0x%04x %02x:%02x:%02x:%02x:%02x:%02x",
- i, base,
+ Log_Log("RTL8139", "Card %i 0x%04x, IRQ %i %02x:%02x:%02x:%02x:%02x:%02x",
+ i, card->IOBase, card->IRQ,
card->MacAddr[0], card->MacAddr[1], card->MacAddr[2],
card->MacAddr[3], card->MacAddr[4], card->MacAddr[5]
);
i ++;
}
+
+ gRTL8139_DriverInfo.RootNode.Size = giRTL8139_CardCount;
+ DevFS_AddDevice( &gRTL8139_DriverInfo );
+
return MODULE_ERR_OK;
}
tVFS_Node *RTL8139_FindDir(tVFS_Node *Node, const char *Filename)
{
//TODO: It might be an idea to supprt >10 cards
- if(Filename[0] == '\0' || Filename[0] != '\0') return NULL;
+ if(Filename[0] == '\0' || Filename[1] != '\0') return NULL;
if(Filename[0] < '0' || Filename[0] > '9') return NULL;
return &gaRTL8139_Cards[ Filename[0]-'0' ].Node;
}
const char *csaRTL8139_RootIOCtls[] = {DRV_IOCTLNAMES, NULL};
int RTL8139_RootIOCtl(tVFS_Node *Node, int ID, void *Data)
{
+ ENTER("pNode iID pData", Node, ID, Data);
switch(ID)
{
BASE_IOCTLS(DRV_TYPE_NETWORK, "RTL8139", VERSION, csaRTL8139_RootIOCtls);
}
+ LEAVE('i', 0);
return 0;
}
Uint64 RTL8139_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
{
tCard *card = Node->ImplPtr;
- int read_ofs, pkt_length;
+ Uint16 read_ofs, pkt_length;
+ int new_read_ofs;
+
+ ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
retry:
- Semaphore_Wait( &card->ReadSemaphore, 1 );
+ if( Semaphore_Wait( &card->ReadSemaphore, 1 ) != 1 )
+ {
+ LEAVE_RET('i', 0);
+ }
Mutex_Acquire( &card->ReadMutex );
- read_ofs = ind( card->IOBase + CAPR ) - card->PhysReceiveBuffer;
+ read_ofs = inw( card->IOBase + CAPR );
+ LOG("raw read_ofs = %i", read_ofs);
+ read_ofs = (read_ofs + 0x10) & 0xFFFF;
+ LOG("read_ofs = %i", read_ofs);
+
+ pkt_length = *(Uint16*)&card->ReceiveBuffer[read_ofs+2];
+
+ // Calculate new read offset
+ new_read_ofs = read_ofs + pkt_length + 4;
+ new_read_ofs = (new_read_ofs + 3) & ~3; // Align
+ if(new_read_ofs > card->ReceiveBufferLength) {
+ LOG("wrapping read_ofs");
+ new_read_ofs -= card->ReceiveBufferLength;
+ }
+ new_read_ofs -= 0x10; // I dunno
+ LOG("new_read_ofs = %i", new_read_ofs);
// Check for errors
if( *(Uint16*)&card->ReceiveBuffer[read_ofs] & 0x1E ) {
+ // Update CAPR
+ outw(card->IOBase + CAPR, new_read_ofs);
Mutex_Release( &card->ReadMutex );
goto retry; // I feel evil
}
- pkt_length = *(Uint16*)&card->ReceiveBuffer[read_ofs+2];
-
// Get packet
if( Length > pkt_length ) Length = pkt_length;
memcpy(Buffer, &card->ReceiveBuffer[read_ofs+4], Length);
- // Update read offset
- read_ofs += pkt_length + 4;
- read_ofs = (read_ofs + 3) & ~3; // Align
- if(read_ofs > card->ReceiveBufferLength) read_ofs = 0;
- outd(card->IOBase + CAPR, read_ofs + card->PhysReceiveBuffer);
+ // Update CAPR
+ outw(card->IOBase + CAPR, new_read_ofs);
Mutex_Release( &card->ReadMutex );
+ LEAVE('i', Length);
+
return Length;
}
if( Length > 1500 ) return 0; // MTU exceeded
- // TODO: Implement a semaphore for avaliable tranmit buffers
+ ENTER("pNode XLength pBuffer", Node, Length, Buffer);
+ // TODO: Implement a semaphore for avaliable transmit buffers
+
// Find an avaliable descriptor
- do {
- for( td = 0; td < 4; td ++ ) {
- if( !(card->TransmitInUse & (1 << td)) )
- break;
- }
- } while(td == 4 && (Threads_Yield(),1));
+ Mutex_Acquire(&card->CurTXProtector);
+ td = card->CurTXDescriptor;
+ card->CurTXDescriptor ++;
+ card->CurTXDescriptor %= 4;
+ Mutex_Release(&card->CurTXProtector);
+ // - Lock it
+ Mutex_Acquire( &card->TransmitInUse[td] );
+
+ LOG("td = %i", td);
// Transmit using descriptor `td`
- card->TransmitInUse |= (1 << td);
+ LOG("card->PhysTransmitBuffers[td] = %P", card->PhysTransmitBuffers[td]);
+ outd(card->IOBase + TSAD0 + td*4, card->PhysTransmitBuffers[td]);
+ LOG("card->TransmitBuffers[td] = %p", card->TransmitBuffers[td]);
// Copy to buffer
memcpy(card->TransmitBuffers[td], Buffer, Length);
// Start
status |= Length & 0x1FFF; // 0-12: Length
status |= 0 << 13; // 13: OWN bit
status |= (0 & 0x3F) << 16; // 16-21: Early TX threshold (zero atm, TODO: check)
- outd(card->IOBase + TSD0 + td, status);
+ LOG("status = 0x%08x", status);
+ outd(card->IOBase + TSD0 + td*4, status);
- return 0;
+ LEAVE('i', (int)Length);
+
+ return Length;
}
const char *csaRTL8139_NodeIOCtls[] = {DRV_IOCTLNAMES, NULL};
int RTL8139_IOCtl(tVFS_Node *Node, int ID, void *Data)
{
+ tCard *card = Node->ImplPtr;
+ ENTER("pNode iID pData", Node, ID, Data);
switch(ID)
{
BASE_IOCTLS(DRV_TYPE_NETWORK, "RTL8139", VERSION, csaRTL8139_NodeIOCtls);
+ case NET_IOCTL_GETMAC:
+ if( !CheckMem(Data, 6) ) {
+ LEAVE('i', -1);
+ return -1;
+ }
+ memcpy( Data, card->MacAddr, 6 );
+ LEAVE('i', 1);
+ return 1;
}
+ LEAVE('i', 0);
return 0;
}
{
int i, j;
tCard *card;
- Uint8 status;
+ Uint16 status;
+
+ LOG("Num = %i", Num);
+
for( i = 0; i < giRTL8139_CardCount; i ++ )
{
card = &gaRTL8139_Cards[i];
if( Num != card->IRQ ) break;
- status = inb(card->IOBase + ISR);
+ status = inw(card->IOBase + ISR);
+ LOG("status = 0x%02x", status);
// Transmit OK, a transmit descriptor is now free
if( status & FLAG_ISR_TOK )
{
- outb(card->IOBase + ISR, FLAG_ISR_TOK);
for( j = 0; j < 4; j ++ )
{
- if( ind(card->IOBase + TSD0 + j) & 0x8000 ) { // TSD TOK
- card->TransmitInUse &= ~(1 << j);
+ if( ind(card->IOBase + TSD0 + j*4) & 0x8000 ) { // TSD TOK
+ Mutex_Release( &card->TransmitInUse[j] );
// TODO: Update semaphore once implemented
}
}
+ outw(card->IOBase + ISR, FLAG_ISR_TOK);
}
// Recieve OK, inform read
{
int read_ofs, end_ofs;
int packet_count = 0;
+ int len;
// Scan recieve buffer for packets
- end_ofs = ind(card->IOBase + CBA) - card->PhysReceiveBuffer;
+ end_ofs = inw(card->IOBase + CBA);
read_ofs = card->SeenOfs;
+ LOG("read_ofs = %i, end_ofs = %i", read_ofs, end_ofs);
if( read_ofs > end_ofs )
{
while( read_ofs < card->ReceiveBufferLength )
{
packet_count ++;
- read_ofs += *(Uint16*)&card->ReceiveBuffer[read_ofs+1] + 2;
+ len = *(Uint16*)&card->ReceiveBuffer[read_ofs+2];
+ LOG("%i 0x%x Pkt Hdr: 0x%04x, len: 0x%04x",
+ packet_count, read_ofs,
+ *(Uint16*)&card->ReceiveBuffer[read_ofs],
+ len
+ );
+ if(len > 2000) {
+ Log_Warning("RTL8139", "IRQ: Packet in buffer exceeds sanity (%i>2000)", len);
+ }
+ read_ofs += len + 4;
+ read_ofs = (read_ofs + 3) & ~3; // Align
}
- read_ofs = 0;
+ read_ofs -= card->ReceiveBufferLength;
+ LOG("wrapped read_ofs");
}
while( read_ofs < end_ofs )
{
packet_count ++;
- read_ofs += *(Uint16*)&card->ReceiveBuffer[read_ofs+1] + 2;
+ LOG("%i 0x%x Pkt Hdr: 0x%04x, len: 0x%04x",
+ packet_count, read_ofs,
+ *(Uint16*)&card->ReceiveBuffer[read_ofs],
+ *(Uint16*)&card->ReceiveBuffer[read_ofs+2]
+ );
+ read_ofs += *(Uint16*)&card->ReceiveBuffer[read_ofs+2] + 4;
+ read_ofs = (read_ofs + 3) & ~3; // Align
+ }
+ if( read_ofs != end_ofs ) {
+ Log_Warning("RTL8139", "IRQ: read_ofs (%i) != end_ofs(%i)", read_ofs, end_ofs);
+ read_ofs = end_ofs;
}
card->SeenOfs = read_ofs;
- Semaphore_Signal( &card->ReadSemaphore, packet_count );
+ LOG("packet_count = %i, read_ofs = 0x%x", packet_count, read_ofs);
+
if( packet_count )
+ {
+ if( Semaphore_Signal( &card->ReadSemaphore, packet_count ) != packet_count ) {
+ // Oops?
+ }
VFS_MarkAvaliable( &card->Node, 1 );
+ }
- outb(card->IOBase + ISR, FLAG_ISR_ROK);
+ outw(card->IOBase + ISR, FLAG_ISR_ROK);
}
}
}
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