/* * 3c90x.c -- This file implements the 3c90x driver for etherboot. Written * by Greg Beeley, Greg.Beeley@LightSys.org. Modified by Steve Smith, * Steve.Smith@Juno.Com. Alignment bug fix Neil Newell (nn@icenoir.net). * * This program Copyright (C) 1999 LightSys Technology Services, Inc. * Portions Copyright (C) 1999 Steve Smith * * This program may be re-distributed in source or binary form, modified, * sold, or copied for any purpose, provided that the above copyright message * and this text are included with all source copies or derivative works, and * provided that the above copyright message and this text are included in the * documentation of any binary-only distributions. This program is distributed * WITHOUT ANY WARRANTY, without even the warranty of FITNESS FOR A PARTICULAR * PURPOSE or MERCHANTABILITY. Please read the associated documentation * "3c90x.txt" before compiling and using this driver. * * -------- * * Program written with the assistance of the 3com documentation for * the 3c905B-TX card, as well as with some assistance from the 3c59x * driver Donald Becker wrote for the Linux kernel, and with some assistance * from the remainder of the Etherboot distribution. * * REVISION HISTORY: * * v0.10 1-26-1998 GRB Initial implementation. * v0.90 1-27-1998 GRB System works. * v1.00pre1 2-11-1998 GRB Got prom boot issue fixed. * v2.0 9-24-1999 SCS Modified for 3c905 (from 3c905b code) * Re-wrote poll and transmit for * better error recovery and heavy * network traffic operation * v2.01 5-26-2003 NN Fixed driver alignment issue which * caused system lockups if driver structures * not 8-byte aligned. * */ #include "etherboot.h" #include "nic.h" #include "pci.h" #include "timer.h" #define XCVR_MAGIC (0x5A00) /** any single transmission fails after 16 collisions or other errors ** this is the number of times to retry the transmission -- this should ** be plenty **/ #define XMIT_RETRIES 250 /*** Register definitions for the 3c905 ***/ enum Registers { regPowerMgmtCtrl_w = 0x7c, /** 905B Revision Only **/ regUpMaxBurst_w = 0x7a, /** 905B Revision Only **/ regDnMaxBurst_w = 0x78, /** 905B Revision Only **/ regDebugControl_w = 0x74, /** 905B Revision Only **/ regDebugData_l = 0x70, /** 905B Revision Only **/ regRealTimeCnt_l = 0x40, /** Universal **/ regUpBurstThresh_b = 0x3e, /** 905B Revision Only **/ regUpPoll_b = 0x3d, /** 905B Revision Only **/ regUpPriorityThresh_b = 0x3c, /** 905B Revision Only **/ regUpListPtr_l = 0x38, /** Universal **/ regCountdown_w = 0x36, /** Universal **/ regFreeTimer_w = 0x34, /** Universal **/ regUpPktStatus_l = 0x30, /** Universal with Exception, pg 130 **/ regTxFreeThresh_b = 0x2f, /** 90X Revision Only **/ regDnPoll_b = 0x2d, /** 905B Revision Only **/ regDnPriorityThresh_b = 0x2c, /** 905B Revision Only **/ regDnBurstThresh_b = 0x2a, /** 905B Revision Only **/ regDnListPtr_l = 0x24, /** Universal with Exception, pg 107 **/ regDmaCtrl_l = 0x20, /** Universal with Exception, pg 106 **/ /** **/ regIntStatusAuto_w = 0x1e, /** 905B Revision Only **/ regTxStatus_b = 0x1b, /** Universal with Exception, pg 113 **/ regTimer_b = 0x1a, /** Universal **/ regTxPktId_b = 0x18, /** 905B Revision Only **/ regCommandIntStatus_w = 0x0e, /** Universal (Command Variations) **/ }; /** following are windowed registers **/ enum Registers7 { regPowerMgmtEvent_7_w = 0x0c, /** 905B Revision Only **/ regVlanEtherType_7_w = 0x04, /** 905B Revision Only **/ regVlanMask_7_w = 0x00, /** 905B Revision Only **/ }; enum Registers6 { regBytesXmittedOk_6_w = 0x0c, /** Universal **/ regBytesRcvdOk_6_w = 0x0a, /** Universal **/ regUpperFramesOk_6_b = 0x09, /** Universal **/ regFramesDeferred_6_b = 0x08, /** Universal **/ regFramesRecdOk_6_b = 0x07, /** Universal with Exceptions, pg 142 **/ regFramesXmittedOk_6_b = 0x06, /** Universal **/ regRxOverruns_6_b = 0x05, /** Universal **/ regLateCollisions_6_b = 0x04, /** Universal **/ regSingleCollisions_6_b = 0x03, /** Universal **/ regMultipleCollisions_6_b = 0x02, /** Universal **/ regSqeErrors_6_b = 0x01, /** Universal **/ regCarrierLost_6_b = 0x00, /** Universal **/ }; enum Registers5 { regIndicationEnable_5_w = 0x0c, /** Universal **/ regInterruptEnable_5_w = 0x0a, /** Universal **/ regTxReclaimThresh_5_b = 0x09, /** 905B Revision Only **/ regRxFilter_5_b = 0x08, /** Universal **/ regRxEarlyThresh_5_w = 0x06, /** Universal **/ regTxStartThresh_5_w = 0x00, /** Universal **/ }; enum Registers4 { regUpperBytesOk_4_b = 0x0d, /** Universal **/ regBadSSD_4_b = 0x0c, /** Universal **/ regMediaStatus_4_w = 0x0a, /** Universal with Exceptions, pg 201 **/ regPhysicalMgmt_4_w = 0x08, /** Universal **/ regNetworkDiagnostic_4_w = 0x06, /** Universal with Exceptions, pg 203 **/ regFifoDiagnostic_4_w = 0x04, /** Universal with Exceptions, pg 196 **/ regVcoDiagnostic_4_w = 0x02, /** Undocumented? **/ }; enum Registers3 { regTxFree_3_w = 0x0c, /** Universal **/ regRxFree_3_w = 0x0a, /** Universal with Exceptions, pg 125 **/ regResetMediaOptions_3_w = 0x08, /** Media Options on B Revision, **/ /** Reset Options on Non-B Revision **/ regMacControl_3_w = 0x06, /** Universal with Exceptions, pg 199 **/ regMaxPktSize_3_w = 0x04, /** 905B Revision Only **/ regInternalConfig_3_l = 0x00, /** Universal, different bit **/ /** definitions, pg 59 **/ }; enum Registers2 { regResetOptions_2_w = 0x0c, /** 905B Revision Only **/ regStationMask_2_3w = 0x06, /** Universal with Exceptions, pg 127 **/ regStationAddress_2_3w = 0x00, /** Universal with Exceptions, pg 127 **/ }; enum Registers1 { regRxStatus_1_w = 0x0a, /** 90X Revision Only, Pg 126 **/ }; enum Registers0 { regEepromData_0_w = 0x0c, /** Universal **/ regEepromCommand_0_w = 0x0a, /** Universal **/ regBiosRomData_0_b = 0x08, /** 905B Revision Only **/ regBiosRomAddr_0_l = 0x04, /** 905B Revision Only **/ }; /*** The names for the eight register windows ***/ enum Windows { winPowerVlan7 = 0x07, winStatistics6 = 0x06, winTxRxControl5 = 0x05, winDiagnostics4 = 0x04, winTxRxOptions3 = 0x03, winAddressing2 = 0x02, winUnused1 = 0x01, winEepromBios0 = 0x00, }; /*** Command definitions for the 3c90X ***/ enum Commands { cmdGlobalReset = 0x00, /** Universal with Exceptions, pg 151 **/ cmdSelectRegisterWindow = 0x01, /** Universal **/ cmdEnableDcConverter = 0x02, /** **/ cmdRxDisable = 0x03, /** **/ cmdRxEnable = 0x04, /** Universal **/ cmdRxReset = 0x05, /** Universal **/ cmdStallCtl = 0x06, /** Universal **/ cmdTxEnable = 0x09, /** Universal **/ cmdTxDisable = 0x0A, /** **/ cmdTxReset = 0x0B, /** Universal **/ cmdRequestInterrupt = 0x0C, /** **/ cmdAcknowledgeInterrupt = 0x0D, /** Universal **/ cmdSetInterruptEnable = 0x0E, /** Universal **/ cmdSetIndicationEnable = 0x0F, /** Universal **/ cmdSetRxFilter = 0x10, /** Universal **/ cmdSetRxEarlyThresh = 0x11, /** **/ cmdSetTxStartThresh = 0x13, /** **/ cmdStatisticsEnable = 0x15, /** **/ cmdStatisticsDisable = 0x16, /** **/ cmdDisableDcConverter = 0x17, /** **/ cmdSetTxReclaimThresh = 0x18, /** **/ cmdSetHashFilterBit = 0x19, /** **/ }; /*** Values for int status register bitmask **/ #define INT_INTERRUPTLATCH (1<<0) #define INT_HOSTERROR (1<<1) #define INT_TXCOMPLETE (1<<2) #define INT_RXCOMPLETE (1<<4) #define INT_RXEARLY (1<<5) #define INT_INTREQUESTED (1<<6) #define INT_UPDATESTATS (1<<7) #define INT_LINKEVENT (1<<8) #define INT_DNCOMPLETE (1<<9) #define INT_UPCOMPLETE (1<<10) #define INT_CMDINPROGRESS (1<<12) #define INT_WINDOWNUMBER (7<<13) /*** TX descriptor ***/ typedef struct { unsigned int DnNextPtr; unsigned int FrameStartHeader; unsigned int HdrAddr; unsigned int HdrLength; unsigned int DataAddr; unsigned int DataLength; } TXD __attribute__ ((aligned(8))); /* 64-bit aligned for bus mastering */ /*** RX descriptor ***/ typedef struct { unsigned int UpNextPtr; unsigned int UpPktStatus; unsigned int DataAddr; unsigned int DataLength; } RXD __attribute__ ((aligned(8))); /* 64-bit aligned for bus mastering */ /*** Global variables ***/ static struct { unsigned char isBrev; unsigned char CurrentWindow; unsigned int IOAddr; unsigned char HWAddr[ETH_ALEN]; TXD TransmitDPD; RXD ReceiveUPD; } INF_3C90X; /*** a3c90x_internal_IssueCommand: sends a command to the 3c90x card ***/ static int a3c90x_internal_IssueCommand(int ioaddr, int cmd, int param) { unsigned int val; /** Build the cmd. **/ val = cmd; val <<= 11; val |= param; /** Send the cmd to the cmd register **/ outw(val, ioaddr + regCommandIntStatus_w); /** Wait for the cmd to complete, if necessary **/ while (inw(ioaddr + regCommandIntStatus_w) & INT_CMDINPROGRESS); return 0; } /*** a3c90x_internal_SetWindow: selects a register window set. ***/ static int a3c90x_internal_SetWindow(int ioaddr, int window) { /** Window already as set? **/ if (INF_3C90X.CurrentWindow == window) return 0; /** Issue the window command. **/ a3c90x_internal_IssueCommand(ioaddr, cmdSelectRegisterWindow, window); INF_3C90X.CurrentWindow = window; return 0; } /*** a3c90x_internal_ReadEeprom - read data from the serial eeprom. ***/ static unsigned short a3c90x_internal_ReadEeprom(int ioaddr, int address) { unsigned short val; /** Select correct window **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winEepromBios0); /** Make sure the eeprom isn't busy **/ while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); /** Read the value. **/ outw(address + ((0x02)<<6), ioaddr + regEepromCommand_0_w); while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); val = inw(ioaddr + regEepromData_0_w); return val; } #if 0 /*** a3c90x_internal_WriteEepromWord - write a physical word of *** data to the onboard serial eeprom (not the BIOS prom, but the *** nvram in the card that stores, among other things, the MAC *** address). ***/ static int a3c90x_internal_WriteEepromWord(int ioaddr, int address, unsigned short value) { /** Select register window **/ a3c90x_internal_SetWindow(ioaddr, winEepromBios0); /** Verify Eeprom not busy **/ while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); /** Issue WriteEnable, and wait for completion. **/ outw(0x30, ioaddr + regEepromCommand_0_w); while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); /** Issue EraseRegister, and wait for completion. **/ outw(address + ((0x03)<<6), ioaddr + regEepromCommand_0_w); while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); /** Send the new data to the eeprom, and wait for completion. **/ outw(value, ioaddr + regEepromData_0_w); outw(0x30, ioaddr + regEepromCommand_0_w); while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); /** Burn the new data into the eeprom, and wait for completion. **/ outw(address + ((0x01)<<6), ioaddr + regEepromCommand_0_w); while((1<<15) & inw(ioaddr + regEepromCommand_0_w)); return 0; } #endif #if 0 /*** a3c90x_internal_WriteEeprom - write data to the serial eeprom, *** and re-compute the eeprom checksum. ***/ static int a3c90x_internal_WriteEeprom(int ioaddr, int address, unsigned short value) { int cksum = 0,v; int i; int maxAddress, cksumAddress; if (INF_3C90X.isBrev) { maxAddress=0x1f; cksumAddress=0x20; } else { maxAddress=0x16; cksumAddress=0x17; } /** Write the value. **/ if (a3c90x_internal_WriteEepromWord(ioaddr, address, value) == -1) return -1; /** Recompute the checksum. **/ for(i=0;i<=maxAddress;i++) { v = a3c90x_internal_ReadEeprom(ioaddr, i); cksum ^= (v & 0xFF); cksum ^= ((v>>8) & 0xFF); } /** Write the checksum to the location in the eeprom **/ if (a3c90x_internal_WriteEepromWord(ioaddr, cksumAddress, cksum) == -1) return -1; return 0; } #endif /*** a3c90x_reset: exported function that resets the card to its default *** state. This is so the Linux driver can re-set the card up the way *** it wants to. If CFG_3C90X_PRESERVE_XCVR is defined, then the reset will *** not alter the selected transceiver that we used to download the boot *** image. ***/ static void a3c90x_reset(void) { #ifdef CFG_3C90X_PRESERVE_XCVR int cfg; /** Read the current InternalConfig value. **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3); cfg = inl(INF_3C90X.IOAddr + regInternalConfig_3_l); #endif /** Send the reset command to the card **/ printf("Issuing RESET:\n"); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdGlobalReset, 0); /** wait for reset command to complete **/ while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS); /** global reset command resets station mask, non-B revision cards ** require explicit reset of values **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winAddressing2); outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+0); outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+2); outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+4); #ifdef CFG_3C90X_PRESERVE_XCVR /** Re-set the original InternalConfig value from before reset **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3); outl(cfg, INF_3C90X.IOAddr + regInternalConfig_3_l); /** enable DC converter for 10-Base-T **/ if ((cfg&0x0300) == 0x0300) { a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdEnableDcConverter, 0); } #endif /** Issue transmit reset, wait for command completion **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxReset, 0); while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS) ; if (! INF_3C90X.isBrev) outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0); /** ** reset of the receiver on B-revision cards re-negotiates the link ** takes several seconds (a computer eternity) **/ if (INF_3C90X.isBrev) a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x04); else a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x00); while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS); ; a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxEnable, 0); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0); /** enable rxComplete and txComplete **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetIndicationEnable, 0x0014); /** acknowledge any pending status flags **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, 0x661); return; } /*** a3c90x_transmit: exported function that transmits a packet. Does not *** return any particular status. Parameters are: *** d[6] - destination address, ethernet; *** t - protocol type (ARP, IP, etc); *** s - size of the non-header part of the packet that needs transmitted; *** p - the pointer to the packet data itself. ***/ static void a3c90x_transmit(struct nic *nic __unused, const char *d, unsigned int t, unsigned int s, const char *p) { struct eth_hdr { unsigned char dst_addr[ETH_ALEN]; unsigned char src_addr[ETH_ALEN]; unsigned short type; } hdr; unsigned char status; unsigned i, retries; for (retries=0; retries < XMIT_RETRIES ; retries++) { /** Stall the download engine **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdStallCtl, 2); /** Make sure the card is not waiting on us **/ inw(INF_3C90X.IOAddr + regCommandIntStatus_w); inw(INF_3C90X.IOAddr + regCommandIntStatus_w); while (inw(INF_3C90X.IOAddr+regCommandIntStatus_w) & INT_CMDINPROGRESS) ; /** Set the ethernet packet type **/ hdr.type = htons(t); /** Copy the destination address **/ memcpy(hdr.dst_addr, d, ETH_ALEN); /** Copy our MAC address **/ memcpy(hdr.src_addr, INF_3C90X.HWAddr, ETH_ALEN); /** Setup the DPD (download descriptor) **/ INF_3C90X.TransmitDPD.DnNextPtr = 0; /** set notification for transmission completion (bit 15) **/ INF_3C90X.TransmitDPD.FrameStartHeader = (s + sizeof(hdr)) | 0x8000; INF_3C90X.TransmitDPD.HdrAddr = virt_to_bus(&hdr); INF_3C90X.TransmitDPD.HdrLength = sizeof(hdr); INF_3C90X.TransmitDPD.DataAddr = virt_to_bus(p); INF_3C90X.TransmitDPD.DataLength = s + (1<<31); /** Send the packet **/ outl(virt_to_bus(&(INF_3C90X.TransmitDPD)), INF_3C90X.IOAddr + regDnListPtr_l); /** End Stall and Wait for upload to complete. **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdStallCtl, 3); while(inl(INF_3C90X.IOAddr + regDnListPtr_l) != 0) ; /** Wait for NIC Transmit to Complete **/ load_timer2(10*TICKS_PER_MS); /* Give it 10 ms */ while (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w)&0x0004) && timer2_running()) ; if (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w)&0x0004)) { printf("3C90X: Tx Timeout\n"); continue; } status = inb(INF_3C90X.IOAddr + regTxStatus_b); /** acknowledge transmit interrupt by writing status **/ outb(0x00, INF_3C90X.IOAddr + regTxStatus_b); /** successful completion (sans "interrupt Requested" bit) **/ if ((status & 0xbf) == 0x80) return; printf("3C90X: Status (%hhX)\n", status); /** check error codes **/ if (status & 0x02) { printf("3C90X: Tx Reclaim Error (%hhX)\n", status); a3c90x_reset(); } else if (status & 0x04) { printf("3C90X: Tx Status Overflow (%hhX)\n", status); for (i=0; i<32; i++) outb(0x00, INF_3C90X.IOAddr + regTxStatus_b); /** must re-enable after max collisions before re-issuing tx **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0); } else if (status & 0x08) { printf("3C90X: Tx Max Collisions (%hhX)\n", status); /** must re-enable after max collisions before re-issuing tx **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0); } else if (status & 0x10) { printf("3C90X: Tx Underrun (%hhX)\n", status); a3c90x_reset(); } else if (status & 0x20) { printf("3C90X: Tx Jabber (%hhX)\n", status); a3c90x_reset(); } else if ((status & 0x80) != 0x80) { printf("3C90X: Internal Error - Incomplete Transmission (%hhX)\n", status); a3c90x_reset(); } } /** failed after RETRY attempts **/ printf("Failed to send after %d retries\n", retries); return; } /*** a3c90x_poll: exported routine that waits for a certain length of time *** for a packet, and if it sees none, returns 0. This routine should *** copy the packet to nic->packet if it gets a packet and set the size *** in nic->packetlen. Return 1 if a packet was found. ***/ static int a3c90x_poll(struct nic *nic, int retrieve) { int i, errcode; if (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w)&0x0010)) { return 0; } if ( ! retrieve ) return 1; /** we don't need to acknowledge rxComplete -- the upload engine ** does it for us. **/ /** Build the up-load descriptor **/ INF_3C90X.ReceiveUPD.UpNextPtr = 0; INF_3C90X.ReceiveUPD.UpPktStatus = 0; INF_3C90X.ReceiveUPD.DataAddr = virt_to_bus(nic->packet); INF_3C90X.ReceiveUPD.DataLength = 1536 + (1<<31); /** Submit the upload descriptor to the NIC **/ outl(virt_to_bus(&(INF_3C90X.ReceiveUPD)), INF_3C90X.IOAddr + regUpListPtr_l); /** Wait for upload completion (upComplete(15) or upError (14)) **/ for(i=0;i<40000;i++); while((INF_3C90X.ReceiveUPD.UpPktStatus & ((1<<14) | (1<<15))) == 0) for(i=0;i<40000;i++); /** Check for Error (else we have good packet) **/ if (INF_3C90X.ReceiveUPD.UpPktStatus & (1<<14)) { errcode = INF_3C90X.ReceiveUPD.UpPktStatus; if (errcode & (1<<16)) printf("3C90X: Rx Overrun (%hX)\n",errcode>>16); else if (errcode & (1<<17)) printf("3C90X: Runt Frame (%hX)\n",errcode>>16); else if (errcode & (1<<18)) printf("3C90X: Alignment Error (%hX)\n",errcode>>16); else if (errcode & (1<<19)) printf("3C90X: CRC Error (%hX)\n",errcode>>16); else if (errcode & (1<<20)) printf("3C90X: Oversized Frame (%hX)\n",errcode>>16); else printf("3C90X: Packet error (%hX)\n",errcode>>16); return 0; } /** Ok, got packet. Set length in nic->packetlen. **/ nic->packetlen = (INF_3C90X.ReceiveUPD.UpPktStatus & 0x1FFF); return 1; } /*** a3c90x_disable: exported routine to disable the card. What's this for? *** the eepro100.c driver didn't have one, so I just left this one empty too. *** Ideas anyone? *** Must turn off receiver at least so stray packets will not corrupt memory *** [Ken] ***/ static void a3c90x_disable(struct dev *dev __unused) { /* reset and disable merge */ a3c90x_reset(); /* Disable the receiver and transmitter. */ outw(cmdRxDisable, INF_3C90X.IOAddr + regCommandIntStatus_w); outw(cmdTxDisable, INF_3C90X.IOAddr + regCommandIntStatus_w); } static void a3c90x_irq(struct nic *nic __unused, irq_action_t action __unused) { switch ( action ) { case DISABLE : break; case ENABLE : break; case FORCE : break; } } /*** a3c90x_probe: exported routine to probe for the 3c905 card and perform *** initialization. If this routine is called, the pci functions did find the *** card. We just have to init it here. ***/ static int a3c90x_probe(struct dev *dev, struct pci_device *pci) { struct nic *nic = (struct nic *)dev; int i, c; unsigned short eeprom[0x21]; unsigned int cfg; unsigned int mopt; unsigned int mstat; unsigned short linktype; #define HWADDR_OFFSET 10 if (pci->ioaddr == 0) return 0; adjust_pci_device(pci); nic->ioaddr = pci->ioaddr & ~3; nic->irqno = 0; INF_3C90X.IOAddr = pci->ioaddr & ~3; INF_3C90X.CurrentWindow = 255; switch (a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, 0x03)) { case 0x9000: /** 10 Base TPO **/ case 0x9001: /** 10/100 T4 **/ case 0x9050: /** 10/100 TPO **/ case 0x9051: /** 10 Base Combo **/ INF_3C90X.isBrev = 0; break; case 0x9004: /** 10 Base TPO **/ case 0x9005: /** 10 Base Combo **/ case 0x9006: /** 10 Base TPO and Base2 **/ case 0x900A: /** 10 Base FL **/ case 0x9055: /** 10/100 TPO **/ case 0x9056: /** 10/100 T4 **/ case 0x905A: /** 10 Base FX **/ default: INF_3C90X.isBrev = 1; break; } /** Load the EEPROM contents **/ if (INF_3C90X.isBrev) { for(i=0;i<=0x20;i++) { eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i); } #ifdef CFG_3C90X_BOOTROM_FIX /** Set xcvrSelect in InternalConfig in eeprom. **/ /* only necessary for 3c905b revision cards with boot PROM bug!!! */ a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x13, 0x0160); #endif #ifdef CFG_3C90X_XCVR if (CFG_3C90X_XCVR == 255) { /** Clear the LanWorks register **/ a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x16, 0); } else { /** Set the selected permanent-xcvrSelect in the ** LanWorks register **/ a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x16, XCVR_MAGIC + ((CFG_3C90X_XCVR) & 0x000F)); } #endif } else { for(i=0;i<=0x17;i++) { eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i); } } /** Print identification message **/ printf("\n\n3C90X Driver 2.00 " "Copyright 1999 LightSys Technology Services, Inc.\n" "Portions Copyright 1999 Steve Smith\n"); printf("Provided with ABSOLUTELY NO WARRANTY.\n"); #ifdef CFG_3C90X_BOOTROM_FIX if (INF_3C90X.isBrev) { printf("NOTE: 3c905b bootrom fix enabled; has side " "effects. See 3c90x.txt for info.\n"); } #endif printf("-------------------------------------------------------" "------------------------\n"); /** Retrieve the Hardware address and print it on the screen. **/ INF_3C90X.HWAddr[0] = eeprom[HWADDR_OFFSET + 0]>>8; INF_3C90X.HWAddr[1] = eeprom[HWADDR_OFFSET + 0]&0xFF; INF_3C90X.HWAddr[2] = eeprom[HWADDR_OFFSET + 1]>>8; INF_3C90X.HWAddr[3] = eeprom[HWADDR_OFFSET + 1]&0xFF; INF_3C90X.HWAddr[4] = eeprom[HWADDR_OFFSET + 2]>>8; INF_3C90X.HWAddr[5] = eeprom[HWADDR_OFFSET + 2]&0xFF; printf("MAC Address = %!\n", INF_3C90X.HWAddr); /* Test if the link is good, if not continue */ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winDiagnostics4); mstat = inw(INF_3C90X.IOAddr + regMediaStatus_4_w); if((mstat & (1<<11)) == 0) { printf("Valid link not established\n"); return 0; } /** Program the MAC address into the station address registers **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winAddressing2); outw(htons(eeprom[HWADDR_OFFSET + 0]), INF_3C90X.IOAddr + regStationAddress_2_3w); outw(htons(eeprom[HWADDR_OFFSET + 1]), INF_3C90X.IOAddr + regStationAddress_2_3w+2); outw(htons(eeprom[HWADDR_OFFSET + 2]), INF_3C90X.IOAddr + regStationAddress_2_3w+4); outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+0); outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+2); outw(0, INF_3C90X.IOAddr + regStationMask_2_3w+4); /** Fill in our entry in the etherboot arp table **/ for(i=0;inode_addr[i] = (eeprom[HWADDR_OFFSET + i/2] >> (8*((i&1)^1))) & 0xff; /** Read the media options register, print a message and set default ** xcvr. ** ** Uses Media Option command on B revision, Reset Option on non-B ** revision cards -- same register address **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3); mopt = inw(INF_3C90X.IOAddr + regResetMediaOptions_3_w); /** mask out VCO bit that is defined as 10baseFL bit on B-rev cards **/ if (! INF_3C90X.isBrev) { mopt &= 0x7F; } printf("Connectors present: "); c = 0; linktype = 0x0008; if (mopt & 0x01) { printf("%s100Base-T4",(c++)?", ":""); linktype = 0x0006; } if (mopt & 0x04) { printf("%s100Base-FX",(c++)?", ":""); linktype = 0x0005; } if (mopt & 0x10) { printf("%s10Base-2",(c++)?", ":""); linktype = 0x0003; } if (mopt & 0x20) { printf("%sAUI",(c++)?", ":""); linktype = 0x0001; } if (mopt & 0x40) { printf("%sMII",(c++)?", ":""); linktype = 0x0006; } if ((mopt & 0xA) == 0xA) { printf("%s10Base-T / 100Base-TX",(c++)?", ":""); linktype = 0x0008; } else if ((mopt & 0xA) == 0x2) { printf("%s100Base-TX",(c++)?", ":""); linktype = 0x0008; } else if ((mopt & 0xA) == 0x8) { printf("%s10Base-T",(c++)?", ":""); linktype = 0x0008; } printf(".\n"); /** Determine transceiver type to use, depending on value stored in ** eeprom 0x16 **/ if (INF_3C90X.isBrev) { if ((eeprom[0x16] & 0xFF00) == XCVR_MAGIC) { /** User-defined **/ linktype = eeprom[0x16] & 0x000F; } } else { #ifdef CFG_3C90X_XCVR if (CFG_3C90X_XCVR != 255) linktype = CFG_3C90X_XCVR; #endif /* CFG_3C90X_XCVR */ /** I don't know what MII MAC only mode is!!! **/ if (linktype == 0x0009) { if (INF_3C90X.isBrev) printf("WARNING: MII External MAC Mode only supported on B-revision " "cards!!!!\nFalling Back to MII Mode\n"); linktype = 0x0006; } } /** enable DC converter for 10-Base-T **/ if (linktype == 0x0003) { a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdEnableDcConverter, 0); } /** Set the link to the type we just determined. **/ a3c90x_internal_SetWindow(INF_3C90X.IOAddr, winTxRxOptions3); cfg = inl(INF_3C90X.IOAddr + regInternalConfig_3_l); cfg &= ~(0xF<<20); cfg |= (linktype<<20); outl(cfg, INF_3C90X.IOAddr + regInternalConfig_3_l); /** Now that we set the xcvr type, reset the Tx and Rx, re-enable. **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxReset, 0x00); while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS) ; if (!INF_3C90X.isBrev) outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdTxEnable, 0); /** ** reset of the receiver on B-revision cards re-negotiates the link ** takes several seconds (a computer eternity) **/ if (INF_3C90X.isBrev) a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x04); else a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxReset, 0x00); while (inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_CMDINPROGRESS) ; /** Set the RX filter = receive only individual pkts & multicast & bcast. **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetRxFilter, 0x01 + 0x02 + 0x04); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdRxEnable, 0); /** ** set Indication and Interrupt flags , acknowledge any IRQ's **/ a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdSetIndicationEnable, 0x0014); a3c90x_internal_IssueCommand(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, 0x661); /** Set our exported functions **/ dev->disable = a3c90x_disable; nic->poll = a3c90x_poll; nic->transmit = a3c90x_transmit; nic->irq = a3c90x_irq; return 1; } static struct pci_id a3c90x_nics[] = { /* Original 90x revisions: */ PCI_ROM(0x10b7, 0x9000, "3c905-tpo", "3Com900-TPO"), /* 10 Base TPO */ PCI_ROM(0x10b7, 0x9001, "3c905-t4", "3Com900-Combo"), /* 10/100 T4 */ PCI_ROM(0x10b7, 0x9050, "3c905-tpo100", "3Com905-TX"), /* 100 Base TX / 10/100 TPO */ PCI_ROM(0x10b7, 0x9051, "3c905-combo", "3Com905-T4"), /* 100 Base T4 / 10 Base Combo */ /* Newer 90xB revisions: */ PCI_ROM(0x10b7, 0x9004, "3c905b-tpo", "3Com900B-TPO"), /* 10 Base TPO */ PCI_ROM(0x10b7, 0x9005, "3c905b-combo", "3Com900B-Combo"), /* 10 Base Combo */ PCI_ROM(0x10b7, 0x9006, "3c905b-tpb2", "3Com900B-2/T"), /* 10 Base TP and Base2 */ PCI_ROM(0x10b7, 0x900a, "3c905b-fl", "3Com900B-FL"), /* 10 Base FL */ PCI_ROM(0x10b7, 0x9055, "3c905b-tpo100", "3Com905B-TX"), /* 10/100 TPO */ PCI_ROM(0x10b7, 0x9056, "3c905b-t4", "3Com905B-T4"), /* 10/100 T4 */ PCI_ROM(0x10b7, 0x9058, "3c905b-9058", "3Com905B-9058"), /* Cyclone 10/100/BNC */ PCI_ROM(0x10b7, 0x905a, "3c905b-fx", "3Com905B-FL"), /* 100 Base FX / 10 Base FX */ /* Newer 90xC revision: */ PCI_ROM(0x10b7, 0x9200, "3c905c-tpo", "3Com905C-TXM"), /* 10/100 TPO (3C905C-TXM) */ PCI_ROM(0x10b7, 0x9210, "3c920b-emb-wnm","3Com20B-EMB WNM"), PCI_ROM(0x10b7, 0x9800, "3c980", "3Com980-Cyclone"), /* Cyclone */ PCI_ROM(0x10b7, 0x9805, "3c9805", "3Com9805"), /* Dual Port Server Cyclone */ PCI_ROM(0x10b7, 0x7646, "3csoho100-tx", "3CSOHO100-TX"), /* Hurricane */ PCI_ROM(0x10b7, 0x4500, "3c450", "3Com450 HomePNA Tornado"), PCI_ROM(0x10b7, 0x1201, "3c982a", "3Com982A"), PCI_ROM(0x10b7, 0x1202, "3c982b", "3Com982B"), }; struct pci_driver a3c90x_driver = { .type = NIC_DRIVER, .name = "3C90X", .probe = a3c90x_probe, .ids = a3c90x_nics, .id_count = sizeof(a3c90x_nics)/sizeof(a3c90x_nics[0]), .class = 0, };