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Improve FreeBSD networking support.

Browse source 
dev/ns_gige.cc:
    Added FreeBSD support.  Required additional register read/write functionality, hash filtering (faked), and EEPROM read access.
dev/ns_gige.hh:
    Added constants and variables for FreeBSD support.  Also created eepromKick() to advance state machine.
dev/ns_gige_reg.h:
    Defined additional register bit fields.
dev/pcidev.cc:
    Fix &= typo.
dev/sinic.cc:
    Remove an INIT_PARAM_DFLT macro.
dev/tsunami_io.cc:
    Fix DPRINTF typo.
kern/freebsd/freebsd_system.cc:
    Edit comments.

--HG--
extra : convert_revision : 37aaa1303d57d3784381e85acb3bc1743adeb8c0
This commit is contained in:
Benjamin Nash 2005-08-12 18:30:35 -04:00
parent a115249eb0
commit 49063eb24f
7 changed files with 298 additions and 39 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

270
dev/ns_gige.cc
View file

@ -98,14 +98,14 @@ NSGigE::NSGigE(Params *p)
txFragPtr(0), txDescCnt(0), txDmaState(dmaIdle), rxState(rxIdle),
rxEnable(false), CRDD(false), rxPktBytes(0),
rxFragPtr(0), rxDescCnt(0), rxDmaState(dmaIdle), extstsEnable(false),
rxDmaReadEvent(this), rxDmaWriteEvent(this),
eepromState(eepromStart), rxDmaReadEvent(this), rxDmaWriteEvent(this),
txDmaReadEvent(this), txDmaWriteEvent(this),
dmaDescFree(p->dma_desc_free), dmaDataFree(p->dma_data_free),
txDelay(p->tx_delay), rxDelay(p->rx_delay),
rxKickTick(0), rxKickEvent(this), txKickTick(0), txKickEvent(this),
txEvent(this), rxFilterEnable(p->rx_filter), acceptBroadcast(false),
acceptMulticast(false), acceptUnicast(false),
acceptPerfect(false), acceptArp(false),
acceptPerfect(false), acceptArp(false), multicastHashEnable(false),
physmem(p->pmem), intrTick(0), cpuPendingIntr(false),
intrEvent(0), interface(0)
{
@ -680,7 +680,9 @@ NSGigE::read(MemReqPtr &req, uint8_t *data)
break;
case RFDR:
switch (regs.rfcr & RFCR_RFADDR) {
uint16_t rfaddr = (uint16_t)(regs.rfcr & RFCR_RFADDR);
switch (rfaddr) {
// Read from perfect match ROM octets
case 0x000:
reg = rom.perfectMatch[1];
reg = reg << 8;
@ -695,9 +697,21 @@ NSGigE::read(MemReqPtr &req, uint8_t *data)
reg += rom.perfectMatch[4];
break;
default:
panic("reading RFDR for something other than PMATCH!\n");
// didn't implement other RFDR functionality b/c
// driver didn't use it
// Read filter hash table
if (rfaddr >= FHASH_ADDR &&
rfaddr < FHASH_ADDR + FHASH_SIZE) {
// Only word-aligned reads supported
if (rfaddr % 2)
panic("unaligned read from filter hash table!");
reg = rom.filterHash[rfaddr - FHASH_ADDR + 1] << 8;
reg += rom.filterHash[rfaddr - FHASH_ADDR];
break;
}
panic("reading RFDR for something other than pattern\
matching or hashing! %#x\n", rfaddr);
}
break;
@ -838,8 +852,12 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
reg & CFGR_RESERVED ||
reg & CFGR_T64ADDR ||
reg & CFGR_PCI64_DET)
panic("writing to read-only or reserved CFGR bits!\n");
// First clear all writable bits
regs.config &= CFGR_LNKSTS | CFGR_SPDSTS | CFGR_DUPSTS |
CFGR_RESERVED | CFGR_T64ADDR |
CFGR_PCI64_DET;
// Now set the appropriate writable bits
regs.config |= reg & ~(CFGR_LNKSTS | CFGR_SPDSTS | CFGR_DUPSTS |
CFGR_RESERVED | CFGR_T64ADDR |
CFGR_PCI64_DET);
@ -895,15 +913,27 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
break;
case MEAR:
regs.mear = reg;
// Clear writable bits
regs.mear &= MEAR_EEDO;
// Set appropriate writable bits
regs.mear |= reg & ~MEAR_EEDO;
// FreeBSD uses the EEPROM to read PMATCH (for the MAC address)
// even though it could get it through RFDR
if (reg & MEAR_EESEL) {
// Rising edge of clock
if (reg & MEAR_EECLK && !eepromClk)
eepromKick();
}
else {
eepromState = eepromStart;
regs.mear &= ~MEAR_EEDI;
}
eepromClk = reg & MEAR_EECLK;
// since phy is completely faked, MEAR_MD* don't matter
// and since the driver never uses MEAR_EE*, they don't
// matter
#if 0
if (reg & MEAR_EEDI) ;
if (reg & MEAR_EEDO) ; // this one is read only
if (reg & MEAR_EECLK) ;
if (reg & MEAR_EESEL) ;
if (reg & MEAR_MDIO) ;
if (reg & MEAR_MDDIR) ;
if (reg & MEAR_MDC) ;
@ -980,7 +1010,11 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
break;
case GPIOR:
regs.gpior = reg;
// Only write writable bits
regs.gpior &= GPIOR_UNUSED | GPIOR_GP5_IN | GPIOR_GP4_IN
| GPIOR_GP3_IN | GPIOR_GP2_IN | GPIOR_GP1_IN;
regs.gpior |= reg & ~(GPIOR_UNUSED | GPIOR_GP5_IN | GPIOR_GP4_IN
| GPIOR_GP3_IN | GPIOR_GP2_IN | GPIOR_GP1_IN);
/* these just control general purpose i/o pins, don't matter */
break;
@ -1037,14 +1071,14 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
acceptUnicast = (reg & RFCR_AAU) ? true : false;
acceptPerfect = (reg & RFCR_APM) ? true : false;
acceptArp = (reg & RFCR_AARP) ? true : false;
multicastHashEnable = (reg & RFCR_MHEN) ? true : false;
#if 0
if (reg & RFCR_APAT)
panic("RFCR_APAT not implemented!\n");
#endif
if (reg & RFCR_MHEN || reg & RFCR_UHEN)
panic("hash filtering not implemented!\n");
if (reg & RFCR_UHEN)
panic("Unicast hash filtering not used by drivers!\n");
if (reg & RFCR_ULM)
panic("RFCR_ULM not implemented!\n");
@ -1052,10 +1086,41 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
break;
case RFDR:
panic("the driver never writes to RFDR, something is wrong!\n");
uint16_t rfaddr = (uint16_t)(regs.rfcr & RFCR_RFADDR);
switch (rfaddr) {
case 0x000:
rom.perfectMatch[0] = (uint8_t)reg;
rom.perfectMatch[1] = (uint8_t)(reg >> 8);
break;
case 0x002:
rom.perfectMatch[2] = (uint8_t)reg;
rom.perfectMatch[3] = (uint8_t)(reg >> 8);
break;
case 0x004:
rom.perfectMatch[4] = (uint8_t)reg;
rom.perfectMatch[5] = (uint8_t)(reg >> 8);
break;
default:
if (rfaddr >= FHASH_ADDR &&
rfaddr < FHASH_ADDR + FHASH_SIZE) {
// Only word-aligned writes supported
if (rfaddr % 2)
panic("unaligned write to filter hash table!");
rom.filterHash[rfaddr - FHASH_ADDR] = (uint8_t)reg;
rom.filterHash[rfaddr - FHASH_ADDR + 1]
= (uint8_t)(reg >> 8);
break;
}
panic("writing RFDR for something other than pattern matching\
or hashing! %#x\n", rfaddr);
}
case BRAR:
panic("the driver never uses BRAR, something is wrong!\n");
regs.brar = reg;
break;
case BRDR:
panic("the driver never uses BRDR, something is wrong!\n");
@ -1076,7 +1141,6 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
case VDR:
panic("the driver never uses VDR, something is wrong!\n");
break;
case CCSR:
/* not going to implement clockrun stuff */
@ -1103,12 +1167,16 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data)
panic("TBISR is read only register!\n");
case TANAR:
regs.tanar = reg;
if (reg & TANAR_PS2)
panic("this isn't used in driver, something wrong!\n");
// Only write the writable bits
regs.tanar &= TANAR_RF1 | TANAR_RF2 | TANAR_UNUSED;
regs.tanar |= reg & ~(TANAR_RF1 | TANAR_RF2 | TANAR_UNUSED);
// Pause capability unimplemented
#if 0
if (reg & TANAR_PS2) ;
if (reg & TANAR_PS1) ;
#endif
if (reg & TANAR_PS1)
panic("this isn't used in driver, something wrong!\n");
break;
case TANLPAR:
@ -1361,7 +1429,7 @@ NSGigE::regsReset()
{
memset(&regs, 0, sizeof(regs));
regs.config = (CFGR_LNKSTS | CFGR_TBI_EN | CFGR_MODE_1000);
regs.mear = 0x22;
regs.mear = 0x12;
regs.txcfg = 0x120; // set drain threshold to 1024 bytes and
// fill threshold to 32 bytes
regs.rxcfg = 0x4; // set drain threshold to 16 bytes
@ -1369,6 +1437,7 @@ NSGigE::regsReset()
regs.mibc = MIBC_FRZ;
regs.vdr = 0x81; // set the vlan tag type to 802.1q
regs.tesr = 0xc000; // TBI capable of both full and half duplex
regs.brar = 0xffffffff;
extstsEnable = false;
acceptBroadcast = false;
@ -2248,6 +2317,107 @@ NSGigE::txKick()
txKickEvent.schedule(txKickTick);
}
/**
* Advance the EEPROM state machine
* Called on rising edge of EEPROM clock bit in MEAR
*/
void
NSGigE::eepromKick()
{
switch (eepromState) {
case eepromStart:
// Wait for start bit
if (regs.mear & MEAR_EEDI) {
// Set up to get 2 opcode bits
eepromState = eepromGetOpcode;
eepromBitsToRx = 2;
eepromOpcode = 0;
}
break;
case eepromGetOpcode:
eepromOpcode <<= 1;
eepromOpcode += (regs.mear & MEAR_EEDI) ? 1 : 0;
--eepromBitsToRx;
// Done getting opcode
if (eepromBitsToRx == 0) {
if (eepromOpcode != EEPROM_READ)
panic("only EEPROM reads are implemented!");
// Set up to get address
eepromState = eepromGetAddress;
eepromBitsToRx = 6;
eepromAddress = 0;
}
break;
case eepromGetAddress:
eepromAddress <<= 1;
eepromAddress += (regs.mear & MEAR_EEDI) ? 1 : 0;
--eepromBitsToRx;
// Done getting address
if (eepromBitsToRx == 0) {
if (eepromAddress >= EEPROM_SIZE)
panic("EEPROM read access out of range!");
switch (eepromAddress) {
case EEPROM_PMATCH2_ADDR:
eepromData = rom.perfectMatch[5];
eepromData <<= 8;
eepromData += rom.perfectMatch[4];
break;
case EEPROM_PMATCH1_ADDR:
eepromData = rom.perfectMatch[3];
eepromData <<= 8;
eepromData += rom.perfectMatch[2];
break;
case EEPROM_PMATCH0_ADDR:
eepromData = rom.perfectMatch[1];
eepromData <<= 8;
eepromData += rom.perfectMatch[0];
break;
default:
panic("FreeBSD driver only uses EEPROM to read PMATCH!");
}
// Set up to read data
eepromState = eepromRead;
eepromBitsToRx = 16;
// Clear data in bit
regs.mear &= ~MEAR_EEDI;
}
break;
case eepromRead:
// Clear Data Out bit
regs.mear &= ~MEAR_EEDO;
// Set bit to value of current EEPROM bit
regs.mear |= (eepromData & 0x8000) ? MEAR_EEDO : 0x0;
eepromData <<= 1;
--eepromBitsToRx;
// All done
if (eepromBitsToRx == 0) {
eepromState = eepromStart;
}
break;
default:
panic("invalid EEPROM state");
}
}
void
NSGigE::transferDone()
{
@ -2294,6 +2464,9 @@ NSGigE::rxFilter(const PacketPtr &packet)
if (acceptMulticast)
drop = false;
// Multicast hashing faked - all packets accepted
if (multicastHashEnable)
drop = false;
}
if (drop) {
@ -2319,7 +2492,14 @@ NSGigE::recvPacket(PacketPtr packet)
return true;
}
if (rxFilterEnable && rxFilter(packet)) {
if (!rxFilterEnable) {
DPRINTF(Ethernet,
"receive packet filtering disabled . . . packet dropped\n");
interface->recvDone();
return true;
}
if (rxFilter(packet)) {
DPRINTF(Ethernet, "packet filtered...dropped\n");
interface->recvDone();
return true;
@ -2394,6 +2574,8 @@ NSGigE::serialize(ostream &os)
SERIALIZE_SCALAR(regs.pcr);
SERIALIZE_SCALAR(regs.rfcr);
SERIALIZE_SCALAR(regs.rfdr);
SERIALIZE_SCALAR(regs.brar);
SERIALIZE_SCALAR(regs.brdr);
SERIALIZE_SCALAR(regs.srr);
SERIALIZE_SCALAR(regs.mibc);
SERIALIZE_SCALAR(regs.vrcr);
@ -2408,6 +2590,7 @@ NSGigE::serialize(ostream &os)
SERIALIZE_SCALAR(regs.tesr);
SERIALIZE_ARRAY(rom.perfectMatch, ETH_ADDR_LEN);
SERIALIZE_ARRAY(rom.filterHash, FHASH_SIZE);
SERIALIZE_SCALAR(ioEnable);
@ -2480,6 +2663,17 @@ NSGigE::serialize(ostream &os)
SERIALIZE_SCALAR(rxDmaState);
SERIALIZE_SCALAR(rxKickTick);
/*
* Serialize EEPROM state machine
*/
int eepromState = this->eepromState;
SERIALIZE_SCALAR(eepromState);
SERIALIZE_SCALAR(eepromClk);
SERIALIZE_SCALAR(eepromBitsToRx);
SERIALIZE_SCALAR(eepromOpcode);
SERIALIZE_SCALAR(eepromAddress);
SERIALIZE_SCALAR(eepromData);
/*
* If there's a pending transmit, store the time so we can
* reschedule it later
@ -2496,6 +2690,7 @@ NSGigE::serialize(ostream &os)
SERIALIZE_SCALAR(acceptUnicast);
SERIALIZE_SCALAR(acceptPerfect);
SERIALIZE_SCALAR(acceptArp);
SERIALIZE_SCALAR(multicastHashEnable);
/*
* Keep track of pending interrupt status.
@ -2535,6 +2730,8 @@ NSGigE::unserialize(Checkpoint *cp, const std::string &section)
UNSERIALIZE_SCALAR(regs.pcr);
UNSERIALIZE_SCALAR(regs.rfcr);
UNSERIALIZE_SCALAR(regs.rfdr);
UNSERIALIZE_SCALAR(regs.brar);
UNSERIALIZE_SCALAR(regs.brdr);
UNSERIALIZE_SCALAR(regs.srr);
UNSERIALIZE_SCALAR(regs.mibc);
UNSERIALIZE_SCALAR(regs.vrcr);
@ -2549,6 +2746,7 @@ NSGigE::unserialize(Checkpoint *cp, const std::string &section)
UNSERIALIZE_SCALAR(regs.tesr);
UNSERIALIZE_ARRAY(rom.perfectMatch, ETH_ADDR_LEN);
UNSERIALIZE_ARRAY(rom.filterHash, FHASH_SIZE);
UNSERIALIZE_SCALAR(ioEnable);
@ -2635,6 +2833,18 @@ NSGigE::unserialize(Checkpoint *cp, const std::string &section)
if (rxKickTick)
rxKickEvent.schedule(rxKickTick);
/*
* Unserialize EEPROM state machine
*/
int eepromState;
UNSERIALIZE_SCALAR(eepromState);
this->eepromState = (EEPROMState) eepromState;
UNSERIALIZE_SCALAR(eepromClk);
UNSERIALIZE_SCALAR(eepromBitsToRx);
UNSERIALIZE_SCALAR(eepromOpcode);
UNSERIALIZE_SCALAR(eepromAddress);
UNSERIALIZE_SCALAR(eepromData);
/*
* If there's a pending transmit, reschedule it now
*/
@ -2652,6 +2862,7 @@ NSGigE::unserialize(Checkpoint *cp, const std::string &section)
UNSERIALIZE_SCALAR(acceptUnicast);
UNSERIALIZE_SCALAR(acceptPerfect);
UNSERIALIZE_SCALAR(acceptArp);
UNSERIALIZE_SCALAR(multicastHashEnable);
/*
* Keep track of pending interrupt status.
@ -2756,8 +2967,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(NSGigE)
INIT_PARAM(mmu, "Memory Controller"),
INIT_PARAM(physmem, "Physical Memory"),
INIT_PARAM_DFLT(rx_filter, "Enable Receive Filter", true),
INIT_PARAM_DFLT(hardware_address, "Ethernet Hardware Address",
"00:99:00:00:00:01"),
INIT_PARAM(hardware_address, "Ethernet Hardware Address"),
INIT_PARAM_DFLT(io_bus, "The IO Bus to attach to for headers", NULL),
INIT_PARAM_DFLT(payload_bus, "The IO Bus to attach to for payload", NULL),
INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),

39
dev/ns_gige.hh
View file

@ -45,6 +45,17 @@
#include "mem/bus/bus.hh"
#include "sim/eventq.hh"
// Hash filtering constants
const uint16_t FHASH_ADDR = 0x100;
const uint16_t FHASH_SIZE = 0x100;
// EEPROM constants
const uint8_t EEPROM_READ = 0x2;
const uint8_t EEPROM_SIZE = 64; // Size in words of NSC93C46 EEPROM
const uint8_t EEPROM_PMATCH2_ADDR = 0xA; // EEPROM Address of PMATCH word 2
const uint8_t EEPROM_PMATCH1_ADDR = 0xB; // EEPROM Address of PMATCH word 1
const uint8_t EEPROM_PMATCH0_ADDR = 0xC; // EEPROM Address of PMATCH word 0
/**
* Ethernet device registers
*/
@ -69,6 +80,8 @@ struct dp_regs {
uint32_t pcr;
uint32_t rfcr;
uint32_t rfdr;
uint32_t brar;
uint32_t brdr;
uint32_t srr;
uint32_t mibc;
uint32_t vrcr;
@ -89,6 +102,12 @@ struct dp_rom {
* the linux driver doesn't use any other ROM
*/
uint8_t perfectMatch[ETH_ADDR_LEN];
/**
* for hash table memory.
* used by the freebsd driver
*/
uint8_t filterHash[FHASH_SIZE];
};
class NSGigEInt;
@ -137,6 +156,15 @@ class NSGigE : public PciDev
dmaWriteWaiting
};
/** EEPROM State Machine States */
enum EEPROMState
{
eepromStart,
eepromGetOpcode,
eepromGetAddress,
eepromRead
};
private:
Addr addr;
static const Addr size = sizeof(dp_regs);
@ -211,6 +239,14 @@ class NSGigE : public PciDev
bool extstsEnable;
/** EEPROM State Machine */
EEPROMState eepromState;
bool eepromClk;
uint8_t eepromBitsToRx;
uint8_t eepromOpcode;
uint8_t eepromAddress;
uint16_t eepromData;
protected:
Tick dmaReadDelay;
Tick dmaWriteDelay;
@ -274,6 +310,8 @@ class NSGigE : public PciDev
friend void TxKickEvent::process();
TxKickEvent txKickEvent;
void eepromKick();
/**
* Retransmit event
*/
@ -301,6 +339,7 @@ class NSGigE : public PciDev
bool acceptUnicast;
bool acceptPerfect;
bool acceptArp;
bool multicastHashEnable;
PhysicalMemory *physmem;

13
dev/ns_gige_reg.h
View file

@ -196,12 +196,21 @@
#define TX_CFG_DRTH_MASK 0x000000ff
/*general purpose I/O control register */
#define GPIOR_UNUSED 0xffff8000
#define GPIOR_GP5_IN 0x00004000
#define GPIOR_GP4_IN 0x00002000
#define GPIOR_GP3_IN 0x00001000
#define GPIOR_GP2_IN 0x00000800
#define GPIOR_GP1_IN 0x00000400
#define GPIOR_GP5_OE 0x00000200
#define GPIOR_GP4_OE 0x00000100
#define GPIOR_GP3_OE 0x00000080
#define GPIOR_GP2_OE 0x00000040
#define GPIOR_GP1_OE 0x00000020
#define GPIOR_GP5_OUT 0x00000010
#define GPIOR_GP4_OUT 0x00000008
#define GPIOR_GP3_OUT 0x00000004
#define GPIOR_GP2_OUT 0x00000002
#define GPIOR_GP1_OUT 0x00000001
/* receive configuration register */
@ -283,10 +292,14 @@
#define TBISR_MR_AN_COMPLETE 0x00000004
/* TBI auto-negotiation advertisement register */
#define TANAR_NP 0x00008000
#define TANAR_RF2 0x00002000
#define TANAR_RF1 0x00001000
#define TANAR_PS2 0x00000100
#define TANAR_PS1 0x00000080
#define TANAR_HALF_DUP 0x00000040
#define TANAR_FULL_DUP 0x00000020
#define TANAR_UNUSED 0x00000E1F
/*
* descriptor format currently assuming link and bufptr

2
dev/pcidev.cc
View file

@ -190,7 +190,7 @@ PciDev::WriteConfig(int offset, int size, uint32_t data)
htoa((word_value & ~0x3) |
(htoa(config.data[offset]) & 0x3));
if (word_value &= ~0x1) {
if (word_value & ~0x1) {
Addr base_addr = (word_value & ~0x1) + TSUNAMI_PCI0_IO;
Addr base_size = BARSize[barnum];

3
dev/sinic.cc
View file

@ -1403,8 +1403,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(Device)
INIT_PARAM(mmu, "Memory Controller"),
INIT_PARAM(physmem, "Physical Memory"),
INIT_PARAM_DFLT(rx_filter, "Enable Receive Filter", true),
INIT_PARAM_DFLT(hardware_address, "Ethernet Hardware Address",
"00:99:00:00:00:01"),
INIT_PARAM(hardware_address, "Ethernet Hardware Address"),
INIT_PARAM_DFLT(io_bus, "The IO Bus to attach to for headers", NULL),
INIT_PARAM_DFLT(payload_bus, "The IO Bus to attach to for payload", NULL),
INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),

2
dev/tsunami_io.cc
View file

@ -56,7 +56,7 @@ using namespace std;
TsunamiIO::RTCEvent::RTCEvent(Tsunami* t, Tick i)
: Event(&mainEventQueue), tsunami(t), interval(i)
{
DPRINTF(MC146818, "RTC Event Initilizing\n");
DPRINTF(MC146818, "RTC Event Initializing\n");
schedule(curTick + interval);
}

2
kern/freebsd/freebsd_system.cc
View file

@ -30,7 +30,6 @@
* @file
* Modifications for the FreeBSD kernel.
* Based on kern/linux/linux_system.cc.
* Currently only used to skip DELAY function.
*
*/
@ -51,7 +50,6 @@ FreebsdSystem::FreebsdSystem(Params *p)
/**
* Any time DELAY is called just skip the function.
* Replace calibrate_clocks with function below.
*/
skipDelayEvent = new SkipFuncEvent(&pcEventQueue, "DELAY");
if (kernelSymtab->findAddress("DELAY", addr))