X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FModules%2FNetwork%2FPRO100%2Fmain.c;h=d75571d339ce593462a983fb916eba835c1e96c2;hb=d7dcea0e5a8df0f479e99f168a10b9a9535c7ad6;hp=d5dc161dc18038e3c5b376be05bbd341381fe25d;hpb=f50dbc2e4980dd0d41d2188bab68bc20d605c1b3;p=tpg%2Facess2.git diff --git a/KernelLand/Modules/Network/PRO100/main.c b/KernelLand/Modules/Network/PRO100/main.c index d5dc161d..d75571d3 100644 --- a/KernelLand/Modules/Network/PRO100/main.c +++ b/KernelLand/Modules/Network/PRO100/main.c @@ -5,110 +5,448 @@ * main.c * - Driver core * - * Built with reference to the linux e100 driver (drivers/net/ethernet/intel/e100.c) - * 82559-fast-ethernet-multifunciton-pci-datasheet.pdf + * 8255x (Intel 8255x 10/100 Mbps Ethernet Controller Family) */ +#define DEBUG 1 #include -#include +#include #include +#include +#include +#include "pro100.h" // === CONSTANTS === -const Uint16 caSupportedCards[][2] = { - {0x8086, 0x103D}, +#define NUM_STATIC_CARDS 2 +static const Uint16 caSupportedCards[][2] = { + {0x8086, 0x103D}, // prelude's card + {0x8086, 0x1209}, // qemu's i82559 emulation }; -const int ciNumSupportedCards = sizeof(caSupportedCards)/sizeof(caSupportedCards[0]); +static const int ciNumSupportedCards = sizeof(caSupportedCards)/sizeof(caSupportedCards[0]); // === PROTOTYPES === int PRO100_Install(char **Arguments); int PRO100_InitCard(tCard *Card); -void PRO100_Cleanup(void); + int PRO100_Cleanup(void); tIPStackBuffer *PRO100_WaitForPacket(void *Ptr); int PRO100_SendPacket(void *Ptr, tIPStackBuffer *Buffer); void PRO100_IRQHandler(int Num, void *Ptr); -size_t PRO100_int_ReadEEPROM(tCard *Card, size_t Ofs, size_t Len, void *Buffer); +Uint16 PRO100_int_ReadEEPROM(tCard *Card, Uint8 *AddrLen, size_t Ofs); + +static void _Write8(tCard *Card, int Ofs, Uint8 Val); +static void _Write16(tCard *Card, int Ofs, Uint16 Val); +static void _Write32(tCard *Card, int Ofs, Uint32 Val); +static Uint8 _Read8(tCard *Card, int Ofs); +static Uint16 _Read16(tCard *Card, int Ofs); +//static Uint32 _Read32(tCard *Card, int Ofs); +static void _FlushWait(tCard *Card, int Delay); + // === GLOBALS === -MODULE_DEFINE(0, PRO100, PRO100_Install, PRO100_Cleanup, "IPStack", NULL); +MODULE_DEFINE(0, 0x100, PRO100, PRO100_Install, PRO100_Cleanup, "IPStack", NULL); tIPStack_AdapterType gPRO100_AdapterType = { .Name = "PRO/100", .Type = ADAPTERTYPE_ETHERNET_100M, - .Flags = 0, + .Flags = ADAPTERFLAG_OFFLOAD_MAC, .SendPacket = PRO100_SendPacket, .WaitForPacket = PRO100_WaitForPacket - }; +tCard gaPRO100_StaticCards[NUM_STATIC_CARDS]; // === CODE === int PRO100_Install(char **Arguments) { + int cardidx = 0; + for( int i = 0; i < ciNumSupportedCards; i ++ ) + { + const Uint16 *ven_dev = caSupportedCards[i]; + LOG("Checking %04x:%04x: %i reported", ven_dev[0], ven_dev[1], + PCI_CountDevices(ven_dev[0], ven_dev[1])); + for( int idx = 0, pciid = -1; -1 != (pciid = PCI_GetDevice(ven_dev[0], ven_dev[1], idx)); idx++ ) + { + Uint8 irq = PCI_GetIRQ(pciid); + Uint32 mmiobase = PCI_GetValidBAR(pciid, 0, PCI_BARTYPE_MEM32); + Uint16 iobase = PCI_GetValidBAR(pciid, 1, PCI_BARTYPE_IO); + LOG("IO Base = %x, MMIOBase = %x", iobase, mmiobase); + + PCI_SetCommand(pciid, PCI_CMD_IOENABLE|PCI_CMD_BUSMASTER, 0); + + tCard *card; + if( cardidx < NUM_STATIC_CARDS ) { + card = &gaPRO100_StaticCards[cardidx++]; + } + else { + card = malloc(sizeof(tCard)); + } + + card->IOBase = iobase; + //card->MMIO = MM_MapHWPages(mmiobase, 1); + IRQ_AddHandler(irq, PRO100_IRQHandler, card); + + // TODO: Error check + PRO100_InitCard(card); + + IPStack_Adapter_Add(&gPRO100_AdapterType, card, card->MAC.Bytes); + } + } return MODULE_ERR_OK; } int PRO100_InitCard(tCard *Card) { + // Initialise structures + Semaphore_Init(&Card->TXCommandSem, NUM_TX, NUM_TX, "PRO100", "Command Buffers"); + Semaphore_Init(&Card->RXSemaphore, 0, NUM_RX, "PRO100", "Receive"); + // Card reset - Card->MMIO->Port = PORT_SELECTIVERESET; - // - Write Flush, wait 20us - Card->MMIO->Port = PORT_SOFTWARERESET; - // - Write Flush, wait 20us + _Write32(Card, REG_Port, PORT_SELECTIVERESET); + _FlushWait(Card, 20); // - Write Flush, wait 20us + _Write32(Card, REG_Port, PORT_SOFTWARERESET); + _FlushWait(Card, 20); // - Write Flush, wait 20us // Read MAC address - Card->MAC.Words[0] = PRO100_int_ReadEEPROM(Card, 0); - Card->MAC.Words[1] = PRO100_int_ReadEEPROM(Card, 1); - Card->MAC.Words[2] = PRO100_int_ReadEEPROM(Card, 2); + Uint8 addr_len = 8; // default to 8, updated on first read + Card->MAC.Words[0] = PRO100_int_ReadEEPROM(Card, &addr_len, 0); + Card->MAC.Words[1] = PRO100_int_ReadEEPROM(Card, &addr_len, 1); + Card->MAC.Words[2] = PRO100_int_ReadEEPROM(Card, &addr_len, 2); + + // Set interrupt mask + _Write8(Card, REG_IntMask, 0); + + // Prepare Command Unit + Card->TXCommands = MM_AllocDMA(1, 32, NULL); + Uint32 txbase = MM_GetPhysAddr(Card->TXCommands); + ASSERT(Card->TXCommands); + for( int i = 0; i < NUM_TX; i ++ ) + { + tCommandUnit *cu = &Card->TXCommands[i].Desc.CU; + cu->Status = 0; + cu->Command = CMD_Nop|CMD_Suspend; + cu->Link = MM_GetPhysAddr(&Card->TXCommands[(i+1)%NUM_TX]); + } + + _Write32(Card, REG_GenPtr, 0); + _FlushWait(Card, 4); + _Write16(Card, REG_Command, CU_CMD_BASE); + _FlushWait(Card, 4); + // Ensure CU is in suspend before we attempt sending + Card->LastTXIndex = 1; + Card->CurTXIndex = 1; + _Write32(Card, REG_GenPtr, txbase); + _FlushWait(Card, 4); + _Write16(Card, REG_Command, CU_CMD_START); + _FlushWait(Card, 4); + + // Create RX Descriptors + for( int i = 0; i < NUM_RX; i += 2 ) + { + char *base = MM_AllocDMA(1, 32, NULL); + ASSERT(base); + Card->RXBufs[i+0] = (void*)base; + Card->RXBufs[i+1] = (void*)(base + 0x800); + for( int j = 0; j < 2; j ++ ) + { + tRXBuffer *rx = Card->RXBufs[i+j]; + rx->CU.Status = 0; + rx->CU.Command = 0; + // Link is populated later + rx->Size = RX_BUF_SIZE; + rx->Count = 0; // clears bit 14 + rx->RXBufAddr = 0; // unused? + } + } + + // NOTE: All `Link` values are relative to the RX base address + Uint32 rx_desc_phys = MM_GetPhysAddr(Card->RXBufs[0]); + for( int i = 0; i < NUM_RX-1; i ++ ) + { + tRXBuffer *rx = Card->RXBufs[i]; + rx->CU.Link = MM_GetPhysAddr(Card->RXBufs[i+1]); + } + Card->RXBufs[NUM_RX-1]->CU.Command = CMD_Suspend; + Card->RXBufs[NUM_RX-1]->CU.Link = 0; // link = 0, loop back + // Set RX Buffer base + _Write32(Card, REG_GenPtr, 0); + _FlushWait(Card, 4); + _Write16(Card, REG_Command, RX_CMD_ADDR_LOAD); + _FlushWait(Card, 4); + + _Write32(Card, REG_GenPtr, rx_desc_phys); + _FlushWait(Card, 4); + _Write16(Card, REG_Command, RX_CMD_START); + _FlushWait(Card, 4); + return 0; } -void PRO100_Cleanup(void) +int PRO100_Cleanup(void) { return 0; } -tIPStackBuffer *PRO100_WaitForPacket(void *Ptr) +void PRO100_ReleaseRXBuf(void *Arg, size_t HeadLen, size_t FootLen, const void *Data) { + tCard *Card = Arg; + tRXBuffer *buf = (tRXBuffer*)Data - 1; + + int idx; + for( idx = 0; idx < NUM_RX && Card->RXBufs[idx] != buf; idx ++ ) + ; + ASSERT(idx != NUM_RX); + + tRXBuffer *prev = Card->RXBufs[ (idx-1+NUM_RX)%NUM_RX ]; + buf->CU.Status = 0; + buf->CU.Command = 0; + buf->Count = 0; + prev->CU.Command &= ~CMD_Suspend; + + // Resume + _Write16(Card, REG_Command, RX_CMD_RESUME); + _FlushWait(Card, 4); } -int PRO100_SendPacket(void *Ptr, tIPStackBuffer *Buffer) + +tIPStackBuffer *PRO100_WaitForPacket(void *Ptr) { + tCard *Card = Ptr; + + // Wait for a packet + do { + Semaphore_Wait(&Card->RXSemaphore, 1); + } while( Card->RXBufs[Card->CurRXIndex]->CU.Status == 0 ); + // Mark previous buffer as suspend (stops the RX unit running into old packets + Card->RXBufs[ (Card->CurRXIndex-1+NUM_RX)%NUM_RX ]->CU.Command |= CMD_Suspend; + tRXBuffer *buf = Card->RXBufs[Card->CurRXIndex]; + Card->CurRXIndex = (Card->CurRXIndex+1) % NUM_RX; + // Return packet (freed in PRO100_ReleaseRXBuf); + tIPStackBuffer *ret = IPStack_Buffer_CreateBuffer(1); + size_t bytes = buf->Count & 0x3FFF; + // - actual data is just after the descriptor + IPStack_Buffer_AppendSubBuffer(ret, bytes, 0, buf+1, PRO100_ReleaseRXBuf, Card); + + LOG("RX'd 0x%x bytes", bytes); + + return ret; } -void PRO100_IRQHandler(int Num, void *Ptr) +void PRO100_int_SetBuf(tTXCommand *TXC, int *IndexPtr, Uint32 Addr, Uint16 Len) { + ASSERTC(*IndexPtr, <, NUM_LOCAL_TXBUFS); + tTXBufDesc *txb = &TXC->LocalBufs[*IndexPtr]; + txb->Addr = Addr; + txb->Len = Len; + (*IndexPtr) ++; +} + +int PRO100_SendPacket(void *Ptr, tIPStackBuffer *Buffer) +{ + tCard *Card = Ptr; + + Semaphore_Wait(&Card->TXCommandSem, 1); + + // Acquire a command buffer + Mutex_Acquire(&Card->lTXCommands); + int txc_idx = Card->CurTXIndex; + Card->CurTXIndex = (Card->CurTXIndex + 1) % NUM_TX; + Mutex_Release(&Card->lTXCommands); + tTXCommand *txc = &Card->TXCommands[txc_idx]; + + // Populate + int txb_idx = 0; + const void *ptr; + size_t len; + size_t total_size = 0; + int buf_idx = -1; + while( (buf_idx = IPStack_Buffer_GetBuffer(Buffer, buf_idx, &len, &ptr)) != -1 ) + { + #if PHYS_BITS > 32 + if( MM_GetPhysAddr(ptr) >> 32 ) { + // Need to bounce + TODO(); + continue ; + } + #endif + + ASSERTC(len, <, PAGE_SIZE); + + // Check if buffer split is required + if( MM_GetPhysAddr((char*)ptr + len-1) != MM_GetPhysAddr(ptr)+len-1 ) + { + // Need to split buffer + size_t space = PAGE_SIZE - ((tVAddr)ptr % PAGE_SIZE); + PRO100_int_SetBuf(txc, &txb_idx, MM_GetPhysAddr(ptr), space); + PRO100_int_SetBuf(txc, &txb_idx, MM_GetPhysAddr((char*)ptr+space), len-space); + } + else + { + // Single buffer + PRO100_int_SetBuf(txc, &txb_idx, MM_GetPhysAddr(ptr), len); + } + + total_size += len; + } + + // Set buffer pointer + Card->TXBuffers[txc_idx] = Buffer; + // Mark as usable + txc->Desc.TBDArrayAddr = 0xFFFFFFFF; + txc->Desc.TCBBytes = total_size | (1 << 15); + txc->Desc.TXThreshold = 3; // Start transmitting after 3*8 bytes + txc->Desc.TBDCount = 0; + txc->Desc.CU.Command = CMD_Suspend|CMD_Tx; + txc->Desc.CU.Status = 0; + IPStack_Buffer_LockBuffer(Buffer); + // - Mark previous as not suspended + Card->TXCommands[ (txc_idx-1+NUM_TX) % NUM_TX ].Desc.CU.Command &= ~CMD_Suspend; + + LOG("Starting send on txc_idx=%i", txc_idx); + LOG("- REG_Status = %x", _Read8(Card, REG_Status)); + + // And dispatch + // - If currently running or idle, this should not matter + // NOTE: Qemu describes this behavior as 'broken' + _Write16(Card, REG_Command, CU_CMD_RESUME); + _FlushWait(Card, 4); + + IPStack_Buffer_LockBuffer(Buffer); + IPStack_Buffer_UnlockBuffer(Buffer); + + LOG("- CU Status = 0x%x", txc->Desc.CU.Status); + + return 0; } -Uint16 PRO100_int_ReadEEPROM(tCard *Card, size_t Ofs) +void PRO100_IRQHandler(int Num, void *Ptr) { - Uint8 addr_len = 8; - Uint32 addr_data = ((EEPROM_OP_READ << addr_len) | Ofs) << 16; + tCard *Card = Ptr; + Uint8 status = _Read8(Card, REG_Ack); - Card->MMIO->EEPROMCtrl = EEPROM_CTRL_CS | EEPROM_CTRL_SK; - // Flush + 4us + if( !status ) + return ; + _Write8(Card, REG_Ack, status); + LOG("status = %x", status); + + if( status & ISR_FCP ) { + LOG("FCP - Flow Control Pause"); + } + if( status & ISR_ER ) { + LOG("ER - Early Receive"); + } + if( status & ISR_SWI ) { + LOG("SWI - Software interrupt"); + } + if( status & ISR_MDI ) { + LOG("MDI - Management Data Interface"); + } + + if( status & ISR_RNR ) { + LOG("RNR - Recieve not ready"); + } + if( status & ISR_CNA ) + { + LOG("CNA - Command unit Not Active"); + // Chase the next command buffer + while( Card->LastTXIndex != Card->CurTXIndex ) + { + int idx = Card->LastTXIndex++; + // Once we hit an incomplete command, stop + if( !(Card->TXCommands[idx].Desc.CU.Status & CU_Status_Complete) ) + break ; + IPStack_Buffer_UnlockBuffer( Card->TXBuffers[idx] ); + Semaphore_Signal(&Card->TXCommandSem, 1); + } + LOG("CU Idle (%i / %i)", Card->LastTXIndex, Card->CurTXIndex); + } + if( status & ISR_FR ) { + LOG("FR - Frame recieved"); + Semaphore_Signal(&Card->RXSemaphore, 1); + LOG("- RX signaled"); + } + if( status & ISR_CX ) { + LOG("CX - Command executed"); + } +} + +Uint16 PRO100_int_ReadEEPROM(tCard *Card, Uint8 *addr_len, size_t Ofs) +{ + ASSERTC( *addr_len, <=, 12 ); - for( int i = 32; i --; ) + Uint32 addr_data = ((EEPROM_OP_READ << *addr_len) | Ofs) << 16; + + // Deslect chip (god knows what state it was left in) + _Write16( Card, REG_EEPROMCtrl, 0 ); + _FlushWait(Card, 4); // Flush + 4us + // Raise CS + _Write16( Card, REG_EEPROMCtrl, EEPROM_CTRL_CS | EEPROM_CTRL_SK ); + _FlushWait(Card, 4); // Flush + 4us + + Uint32 data = 0; + + // 2 preamble (0,1) + 2 command (read=1,0) + n address + 16 data + for( int i = (2+2+*addr_len+16); i --; ) { - Uint8 ctrl = EEPROM_CTRL_CS | ((addr_data & (1 << i)) ? EEPROM_CTRL_DI : 0); - Card->MMIO->EEPROMCtrl = ctrl; - // Flush + 4us - Card->MMIO->EEPROMCtrl = ctrl | EEPROM_CTRL_SK; - // Flush + 4us + Uint16 ctrl = EEPROM_CTRL_CS | ((addr_data & (1 << i)) ? EEPROM_CTRL_DI : 0); + _Write16( Card, REG_EEPROMCtrl, ctrl ); + _FlushWait(Card, 4); // Flush + 4us + _Write16( Card, REG_EEPROMCtrl, ctrl | EEPROM_CTRL_SK ); + _FlushWait(Card, 4); // Flush + 4us - ctrl = Card->MMIO->EEPROMCtrl; + ctrl = _Read16( Card, REG_EEPROMCtrl ); // Once the address is fully recieved, the card emits a zero bit if( !(ctrl & EEPROM_CTRL_DO) && i > 16 ) { - addr_len = addr_len - (i - 16); - i = 17; + *addr_len = *addr_len - (i - 16); + LOG("addr_len = %i", *addr_len); + + i = 16; } - data = (data << 1) | (ctrl & EEPROM_CTRL_DO ? 1 : 0) + data = (data << 1) | (ctrl & EEPROM_CTRL_DO ? 1 : 0); } // Deslect chip - Card->MMIO->EEPROMCtrl = 0; - // Flush + 4us + _Write16( Card, REG_EEPROMCtrl, 0 ); + _FlushWait(Card, 4); // Flush + 4us + LOG("Read %x from EEPROM ofs %i", data&0xFFFF, Ofs); return (data & 0xFFFF); } + +static void _Write8(tCard *Card, int Ofs, Uint8 Val) { + //LOG("%p +%i := %02x", Card, Ofs, Val); + outb(Card->IOBase + Ofs, Val); +} +static void _Write16(tCard *Card, int Ofs, Uint16 Val) { + //LOG("%p +%i := %04x", Card, Ofs, Val); + ASSERT( !(Ofs & 1) ); + outw(Card->IOBase + Ofs, Val); +} +static void _Write32(tCard *Card, int Ofs, Uint32 Val) { + //LOG("%p +%i := %08x", Card, Ofs, Val); + ASSERT( !(Ofs & 3) ); + outd(Card->IOBase + Ofs, Val); +} +static Uint8 _Read8(tCard *Card, int Ofs) { + Uint8 rv = inb(Card->IOBase + Ofs); + //LOG("%p +%i == %02x", Card, Ofs, rv); + return rv; +} +static Uint16 _Read16(tCard *Card, int Ofs) { + ASSERT( !(Ofs & 1) ); + Uint16 rv = inw(Card->IOBase + Ofs); + //LOG("%p +%i == %04x", Card, Ofs, rv); + return rv; +} +//static Uint32 _Read32(tCard *Card, int Ofs) { return ind(Card->IOBase + Ofs); } + +static void _FlushWait(tCard *Card, int Delay) +{ + _Read16( Card, REG_Status ); + if(Delay > 0) + { + Time_MicroSleep(Delay); + } +} +