+++ /dev/null
-/*
- * Acess2 PCnet-FAST III Driver
- * - By John Hodge (thePowersGang)
- */
-#define DEBUG 0
-#define VERSION ((0<<8)|10)
-#include <acess.h>
-#include <modules.h>
-#include <fs_devfs.h>
-#include <drv_pci.h>
-#include <api_drv_network.h>
-#include <semaphore.h>
-
-// === CONSTANTS ===
-#define VENDOR_ID 0x1022
-#define DEVICE_ID 0x2000
-
-enum eRegs
-{
- REG_APROM0 = 0x00,
- REG_APROM4 = 0x04,
- REG_APROM8 = 0x08,
- REG_APROMC = 0x0C,
- REG_RDP = 0x10, // 16 bit
- REG_RAP = 0x14, // 8-bit
- REG_RESET = 0x18, // 16-bit
- REG_BDP = 0x1C, // 16-bit
-};
-
-enum eCSR_Regs
-{
- CSR_STATUS, // CSR0 - Am79C973/Am79C975 Controller Status
- CSR_IBA0, // CSR1 - Initialization Block Address[15:0]
- CSR_IBA1, // CSR2 - Initialization Block Address[31:16]
- CSR_INTMASK, // CSR3 - Interrupt Masks and Deferral Control
-
- CSR_MAC0 = 12, // CSR12 - Physical Address[15:0]
- CSR_MAC1 = 13, // CSR13 - Physical Address[31:16]
- CSR_MAC2 = 14, // CSR14 - Physical Address[47:32]
- CSR_MODE = 15, // CSR15 - Mode
-
- CSR_RXBASE0 = 24, // CSR24 - Base Address of Receive Ring Lower
- CSR_RXBASE1 = 25, // CSR25 - Base Address of Receive Ring Upper
- CSR_TXBASE0 = 30, // CSR26 - Base Address of Transmit Ring Lower
- CSR_TXBASE1 = 31, // CSR27 - Base Address of Transmit Ring Upper
-
- CSR_RXLENGTH = 76, // CSR76 - Receive Ring Length
- CSR_TXLENGTH = 78, // CSR78 - Transmit Ring Length
-};
-
-enum eBCR_Regs
-{
- BCR_PHYCS = 32, // BCR32 - Internal PHY Control and Status
- BCR_PHYADDR, // BCR33 - Internal PHY Address
- BCR_PHYMGMT, // BCR34 - Internal PHY Management Data
-};
-
-// === TYPES ===
-typedef struct sCard
-{
- Uint16 IOBase;
- Uint8 IRQ;
-
- int NumWaitingPackets;
-
- char Name[2];
- tVFS_Node Node;
- Uint8 MacAddr[6];
-} tCard;
-
-// === PROTOTYPES ===
- int PCnet3_Install(char **Options);
-char *PCnet3_ReadDir(tVFS_Node *Node, int Pos);
-tVFS_Node *PCnet3_FindDir(tVFS_Node *Node, const char *Filename);
- int PCnet3_RootIOCtl(tVFS_Node *Node, int ID, void *Arg);
-Uint64 PCnet3_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
-Uint64 PCnet3_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
- int PCnet3_IOCtl(tVFS_Node *Node, int ID, void *Arg);
-void PCnet3_IRQHandler(int Num);
-
-// === GLOBALS ===
-MODULE_DEFINE(0, VERSION, PCnet3, PCnet3_Install, NULL, NULL);
-tDevFS_Driver gPCnet3_DriverInfo = {
- NULL, "PCnet3",
- {
- .NumACLs = 1,
- .ACLs = &gVFS_ACL_EveryoneRX,
- .Flags = VFS_FFLAG_DIRECTORY,
- .ReadDir = PCnet3_ReadDir,
- .FindDir = PCnet3_FindDir,
- .IOCtl = PCnet3_RootIOCtl
- }
-};
- int giPCnet3_CardCount;
-tCard *gaPCnet3_Cards;
-
-// === CODE ===
-/**
- * \brief Installs the PCnet3 Driver
- */
-int PCnet3_Install(char **Options)
-{
- int id = -1;
- int i = 0;
- Uint16 base;
- tCard *card;
-
- giPCnet3_CardCount = PCI_CountDevices(VENDOR_ID, DEVICE_ID);
- Log_Debug("PCnet3", "%i cards", giPCnet3_CardCount);
-
- if( giPCnet3_CardCount == 0 ) return MODULE_ERR_NOTNEEDED;
-
- gaPCnet3_Cards = calloc( giPCnet3_CardCount, sizeof(tCard) );
-
- while( (id = PCI_GetDevice(VENDOR_ID, DEVICE_ID, i)) != -1 )
- {
- card = &gaPCnet3_Cards[i];
- base = PCI_GetBAR( id, 0 );
- if( !(base & 1) ) {
- Log_Warning("PCnet3", "Driver does not support MMIO, skipping card");
- card->IOBase = 0;
- card->IRQ = 0;
- continue ;
- }
- base &= ~1;
- card->IOBase = base;
- card->IRQ = PCI_GetIRQ( id );
-
- // Install IRQ Handler
- IRQ_AddHandler(card->IRQ, PCnet3_IRQHandler);
-
-
-
- Log_Log("PCnet3", "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 ++;
- }
-
- gPCnet3_DriverInfo.RootNode.Size = giPCnet3_CardCount;
- DevFS_AddDevice( &gPCnet3_DriverInfo );
-
- return MODULE_ERR_OK;
-}
-
-// --- Root Functions ---
-char *PCnet3_ReadDir(tVFS_Node *Node, int Pos)
-{
- if( Pos < 0 || Pos >= giPCnet3_CardCount ) return NULL;
-
- return strdup( gaPCnet3_Cards[Pos].Name );
-}
-
-tVFS_Node *PCnet3_FindDir(tVFS_Node *Node, const char *Filename)
-{
- //TODO: It might be an idea to supprt >10 cards
- if(Filename[0] == '\0' || Filename[1] != '\0') return NULL;
- if(Filename[0] < '0' || Filename[0] > '9') return NULL;
- return &gaPCnet3_Cards[ Filename[0]-'0' ].Node;
-}
-
-const char *csaPCnet3_RootIOCtls[] = {DRV_IOCTLNAMES, NULL};
-int PCnet3_RootIOCtl(tVFS_Node *Node, int ID, void *Data)
-{
- ENTER("pNode iID pData", Node, ID, Data);
- switch(ID)
- {
- BASE_IOCTLS(DRV_TYPE_NETWORK, "PCnet3", VERSION, csaPCnet3_RootIOCtls);
- }
- LEAVE('i', 0);
- return 0;
-}
-
-// --- File Functions ---
-Uint64 PCnet3_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
-{
- tCard *card = Node->ImplPtr;
- Uint16 read_ofs, pkt_length;
- int new_read_ofs;
-
- ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
-
-retry:
- if( Semaphore_Wait( &card->ReadSemaphore, 1 ) != 1 )
- {
- LEAVE_RET('i', 0);
- }
-
- Mutex_Acquire( &card->ReadMutex );
-
- 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
- }
-
- // Get packet
- if( Length > pkt_length ) Length = pkt_length;
- memcpy(Buffer, &card->ReceiveBuffer[read_ofs+4], Length);
-
- // Update CAPR
- outw(card->IOBase + CAPR, new_read_ofs);
-
- Mutex_Release( &card->ReadMutex );
-
- LEAVE('i', Length);
-
- return Length;
-}
-
-Uint64 PCnet3_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
-{
- int td;
- Uint32 status;
- tCard *card = Node->ImplPtr;
-
- if( Length > 1500 ) return 0; // MTU exceeded
-
- ENTER("pNode XLength pBuffer", Node, Length, Buffer);
-
- // TODO: Implement a semaphore for avaliable transmit buffers
-
- // Find an avaliable descriptor
- 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`
- 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 = 0;
- 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)
- LOG("status = 0x%08x", status);
- outd(card->IOBase + TSD0 + td*4, status);
-
- LEAVE('i', (int)Length);
-
- return Length;
-}
-
-const char *csaPCnet3_NodeIOCtls[] = {DRV_IOCTLNAMES, NULL};
-int PCnet3_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, "PCnet3", VERSION, csaPCnet3_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;
-}
-
-void PCnet3_IRQHandler(int Num)
-{
- int i, j;
- tCard *card;
- Uint16 status;
-
- LOG("Num = %i", Num);
-
- for( i = 0; i < giPCnet3_CardCount; i ++ )
- {
- card = &gaPCnet3_Cards[i];
- if( Num != card->IRQ ) break;
-
- status = inw(card->IOBase + ISR);
- LOG("status = 0x%02x", status);
-
- // Transmit OK, a transmit descriptor is now free
- if( status & FLAG_ISR_TOK )
- {
- for( j = 0; j < 4; 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
- if( status & FLAG_ISR_ROK )
- {
- int read_ofs, end_ofs;
- int packet_count = 0;
- int len;
-
- // Scan recieve buffer for packets
- 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 ++;
- 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("PCnet3", "IRQ: Packet in buffer exceeds sanity (%i>2000)", len);
- }
- read_ofs += len + 4;
- read_ofs = (read_ofs + 3) & ~3; // Align
- }
- read_ofs -= card->ReceiveBufferLength;
- LOG("wrapped read_ofs");
- }
- while( read_ofs < end_ofs )
- {
- packet_count ++;
- 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("PCnet3", "IRQ: read_ofs (%i) != end_ofs(%i)", read_ofs, end_ofs);
- read_ofs = end_ofs;
- }
- card->SeenOfs = read_ofs;
-
- 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 );
- }
-
- outw(card->IOBase + ISR, FLAG_ISR_ROK);
- }
- }
-}
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