#include <vector>
#include "base/trace.hh"
-#include "dev/console.hh"
#include "dev/tsunami_cchip.hh"
#include "dev/tsunamireg.h"
#include "dev/tsunami.hh"
using namespace std;
TsunamiCChip::TsunamiCChip(const string &name, Tsunami *t, Addr a,
- MemoryController *mmu, HierParams *hier, Bus* bus)
- : PioDevice(name), addr(a), tsunami(t)
+ MemoryController *mmu, HierParams *hier, Bus* bus,
+ Tick pio_latency)
+ : PioDevice(name, t), addr(a), tsunami(t)
{
- mmu->add_child(this, Range<Addr>(addr, addr + size));
-
- for(int i=0; i < Tsunami::Max_CPUs; i++) {
- dim[i] = 0;
- dir[i] = 0;
- dirInterrupting[i] = false;
- ipiInterrupting[i] = false;
- RTCInterrupting[i] = false;
- }
+ mmu->add_child(this, RangeSize(addr, size));
if (bus) {
pioInterface = newPioInterface(name, hier, bus, this,
&TsunamiCChip::cacheAccess);
- pioInterface->addAddrRange(addr, addr + size - 1);
+ pioInterface->addAddrRange(RangeSize(addr, size));
+ pioLatency = pio_latency * bus->clockRatio;
}
drir = 0;
- misc = 0;
+ ipint = 0;
+ itint = 0;
+
+ for (int x = 0; x < Tsunami::Max_CPUs; x++)
+ {
+ dim[x] = 0;
+ dir[x] = 0;
+ }
//Put back pointer in tsunami
tsunami->cchip = this;
Fault
TsunamiCChip::read(MemReqPtr &req, uint8_t *data)
{
- DPRINTF(Tsunami, "read va=%#x size=%d\n",
- req->vaddr, req->size);
+ DPRINTF(Tsunami, "read va=%#x size=%d\n", req->vaddr, req->size);
+
+ Addr regnum = (req->paddr - (addr & EV5::PAddrImplMask)) >> 6;
+ Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask));
- Addr daddr = (req->paddr - (addr & PA_IMPL_MASK)) >> 6;
ExecContext *xc = req->xc;
switch (req->size) {
case sizeof(uint64_t):
- switch(daddr) {
+ if (daddr & TSDEV_CC_BDIMS)
+ {
+ *(uint64_t*)data = dim[(daddr >> 4) & 0x3F];
+ return No_Fault;
+ }
+
+ if (daddr & TSDEV_CC_BDIRS)
+ {
+ *(uint64_t*)data = dir[(daddr >> 4) & 0x3F];
+ return No_Fault;
+ }
+
+ switch(regnum) {
case TSDEV_CC_CSR:
*(uint64_t*)data = 0x0;
return No_Fault;
panic("TSDEV_CC_MTR not implemeted\n");
return No_Fault;
case TSDEV_CC_MISC:
- *(uint64_t*)data = misc | (xc->cpu_id & 0x3);
+ *(uint64_t*)data = (ipint << 8) & 0xF |
+ (itint << 4) & 0xF |
+ (xc->cpu_id & 0x3);
return No_Fault;
case TSDEV_CC_AAR0:
case TSDEV_CC_AAR1:
case TSDEV_CC_MPR3:
panic("TSDEV_CC_MPRx not implemented\n");
return No_Fault;
+ case TSDEV_CC_IPIR:
+ *(uint64_t*)data = ipint;
+ return No_Fault;
+ case TSDEV_CC_ITIR:
+ *(uint64_t*)data = itint;
+ return No_Fault;
default:
panic("default in cchip read reached, accessing 0x%x\n");
} // uint64_t
break;
case sizeof(uint32_t):
+ if (regnum == TSDEV_CC_DRIR) {
+ warn("accessing DRIR with 32 bit read, "
+ "hopefully your just reading this for timing");
+ *(uint32_t*)data = drir;
+ } else
+ panic("invalid access size(?) for tsunami register!\n");
+ return No_Fault;
case sizeof(uint16_t):
case sizeof(uint8_t):
default:
panic("invalid access size(?) for tsunami register!\n");
}
- DPRINTFN("Tsunami CChip ERROR: read daddr=%#x size=%d\n", daddr, req->size);
+ DPRINTFN("Tsunami CChip ERROR: read regnum=%#x size=%d\n", regnum, req->size);
return No_Fault;
}
DPRINTF(Tsunami, "write - va=%#x value=%#x size=%d \n",
req->vaddr, *(uint64_t*)data, req->size);
- Addr daddr = (req->paddr - (addr & PA_IMPL_MASK)) >> 6;
+ Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask));
+ Addr regnum = (req->paddr - (addr & EV5::PAddrImplMask)) >> 6;
bool supportedWrite = false;
- uint64_t size = tsunami->intrctrl->cpu->system->execContexts.size();
switch (req->size) {
case sizeof(uint64_t):
- switch(daddr) {
- case TSDEV_CC_CSR:
+ if (daddr & TSDEV_CC_BDIMS)
+ {
+ int number = (daddr >> 4) & 0x3F;
+
+ uint64_t bitvector;
+ uint64_t olddim;
+ uint64_t olddir;
+
+ olddim = dim[number];
+ olddir = dir[number];
+ dim[number] = *(uint64_t*)data;
+ dir[number] = dim[number] & drir;
+ for(int x = 0; x < Tsunami::Max_CPUs; x++)
+ {
+ bitvector = ULL(1) << x;
+ // Figure out which bits have changed
+ if ((dim[number] & bitvector) != (olddim & bitvector))
+ {
+ // The bit is now set and it wasn't before (set)
+ if((dim[number] & bitvector) && (dir[number] & bitvector))
+ {
+ tsunami->intrctrl->post(number, TheISA::INTLEVEL_IRQ1, x);
+ DPRINTF(Tsunami, "dim write resulting in posting dir"
+ " interrupt to cpu %d\n", number);
+ }
+ else if ((olddir & bitvector) &&
+ !(dir[number] & bitvector))
+ {
+ // The bit was set and now its now clear and
+ // we were interrupting on that bit before
+ tsunami->intrctrl->clear(number, TheISA::INTLEVEL_IRQ1, x);
+ DPRINTF(Tsunami, "dim write resulting in clear"
+ " dir interrupt to cpu %d\n", number);
+
+ }
+
+
+ }
+ }
+ return No_Fault;
+ }
+
+ switch(regnum) {
+ case TSDEV_CC_CSR:
panic("TSDEV_CC_CSR write\n");
return No_Fault;
case TSDEV_CC_MTR:
panic("TSDEV_CC_MTR write not implemented\n");
return No_Fault;
case TSDEV_CC_MISC:
- //If it is the 4-7th bit, clear the RTC interrupt
- uint64_t itintr;
- if ((itintr = (*(uint64_t*) data) & (0xf<<4))) {
- //Clear the bits in ITINTR
- misc &= ~(itintr);
- for (int i=0; i < size; i++) {
- if ((itintr & (1 << (i+4))) && RTCInterrupting[i]) {
- tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ2, 0);
- RTCInterrupting[i] = false;
- DPRINTF(Tsunami, "clearing rtc interrupt to cpu=%d\n", i);
- }
- }
- supportedWrite = true;
- }
- //If it is 12th-15th bit, IPI sent to Processor 1
uint64_t ipreq;
- if ((ipreq = (*(uint64_t*) data) & (0xf << 12))) {
- //Set the bits in IPINTR
- misc |= (ipreq >> 4);
- for (int i=0; i < size; i++) {
- if ((ipreq & (1 << (i + 12)))) {
- if (!ipiInterrupting[i])
- tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ3, 0);
- ipiInterrupting[i]++;
- DPRINTF(IPI, "send cpu=%d pending=%d from=%d\n", i,
- ipiInterrupting[i], req->cpu_num);
- }
- }
+ ipreq = (*(uint64_t*)data >> 12) & 0xF;
+ //If it is bit 12-15, this is an IPI post
+ if (ipreq) {
+ reqIPI(ipreq);
supportedWrite = true;
}
- //If it is bits 8-11, then clearing IPI's
+
+ //If it is bit 8-11, this is an IPI clear
uint64_t ipintr;
- if ((ipintr = (*(uint64_t*) data) & (0xf << 8))) {
- //Clear the bits in IPINTR
- misc &= ~(ipintr);
- for (int i=0; i < size; i++) {
- if ((ipintr & (1 << (i + 8))) && ipiInterrupting[i]) {
- if (!(--ipiInterrupting[i]))
- tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ3, 0);
- DPRINTF(IPI, "clearing cpu=%d pending=%d from=%d\n", i,
- ipiInterrupting[i] + 1, req->cpu_num);
- }
- }
+ ipintr = (*(uint64_t*)data >> 8) & 0xF;
+ if (ipintr) {
+ clearIPI(ipintr);
+ supportedWrite = true;
+ }
+
+ //If it is the 4-7th bit, clear the RTC interrupt
+ uint64_t itintr;
+ itintr = (*(uint64_t*)data >> 4) & 0xF;
+ if (itintr) {
+ clearITI(itintr);
supportedWrite = true;
}
- // ignore NXMs
- if (*(uint64_t*)data & 0x10000000)
- supportedWrite = true;
+ // ignore NXMs
+ if (*(uint64_t*)data & 0x10000000)
+ supportedWrite = true;
+
+ if(!supportedWrite)
+ panic("TSDEV_CC_MISC write not implemented\n");
- if(!supportedWrite) panic("TSDEV_CC_MISC write not implemented\n");
return No_Fault;
case TSDEV_CC_AAR0:
case TSDEV_CC_AAR1:
case TSDEV_CC_DIM2:
case TSDEV_CC_DIM3:
int number;
- if(daddr == TSDEV_CC_DIM0)
+ if(regnum == TSDEV_CC_DIM0)
number = 0;
- else if(daddr == TSDEV_CC_DIM1)
+ else if(regnum == TSDEV_CC_DIM1)
number = 1;
- else if(daddr == TSDEV_CC_DIM2)
+ else if(regnum == TSDEV_CC_DIM2)
number = 2;
else
number = 3;
dir[number] = dim[number] & drir;
for(int x = 0; x < 64; x++)
{
- bitvector = (uint64_t)1 << x;
+ bitvector = ULL(1) << x;
// Figure out which bits have changed
if ((dim[number] & bitvector) != (olddim & bitvector))
{
// we were interrupting on that bit before
tsunami->intrctrl->clear(number, TheISA::INTLEVEL_IRQ1, x);
DPRINTF(Tsunami, "dim write resulting in clear"
- "dir interrupt to cpu 0\n");
+ " dir interrupt to cpu %d\n",
+ x);
}
case TSDEV_CC_MPR2:
case TSDEV_CC_MPR3:
panic("TSDEV_CC_MPRx write not implemented\n");
+ case TSDEV_CC_IPIR:
+ clearIPI(*(uint64_t*)data);
+ return No_Fault;
+ case TSDEV_CC_ITIR:
+ clearITI(*(uint64_t*)data);
+ return No_Fault;
+ case TSDEV_CC_IPIQ:
+ reqIPI(*(uint64_t*)data);
+ return No_Fault;
default:
panic("default in cchip read reached, accessing 0x%x\n");
}
return No_Fault;
}
+void
+TsunamiCChip::clearIPI(uint64_t ipintr)
+{
+ int numcpus = tsunami->intrctrl->cpu->system->execContexts.size();
+ assert(numcpus <= Tsunami::Max_CPUs);
+
+ if (ipintr) {
+ for (int cpunum=0; cpunum < numcpus; cpunum++) {
+ // Check each cpu bit
+ uint64_t cpumask = ULL(1) << cpunum;
+ if (ipintr & cpumask) {
+ // Check if there is a pending ipi
+ if (ipint & cpumask) {
+ ipint &= ~cpumask;
+ tsunami->intrctrl->clear(cpunum, TheISA::INTLEVEL_IRQ3, 0);
+ DPRINTF(IPI, "clear IPI IPI cpu=%d\n", cpunum);
+ }
+ else
+ warn("clear IPI for CPU=%d, but NO IPI\n", cpunum);
+ }
+ }
+ }
+ else
+ panic("Big IPI Clear, but not processors indicated\n");
+}
+
+void
+TsunamiCChip::clearITI(uint64_t itintr)
+{
+ int numcpus = tsunami->intrctrl->cpu->system->execContexts.size();
+ assert(numcpus <= Tsunami::Max_CPUs);
+
+ if (itintr) {
+ for (int i=0; i < numcpus; i++) {
+ uint64_t cpumask = ULL(1) << i;
+ if (itintr & cpumask & itint) {
+ tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ2, 0);
+ itint &= ~cpumask;
+ DPRINTF(Tsunami, "clearing rtc interrupt to cpu=%d\n", i);
+ }
+ }
+ }
+ else
+ panic("Big ITI Clear, but not processors indicated\n");
+}
+
+void
+TsunamiCChip::reqIPI(uint64_t ipreq)
+{
+ int numcpus = tsunami->intrctrl->cpu->system->execContexts.size();
+ assert(numcpus <= Tsunami::Max_CPUs);
+
+ if (ipreq) {
+ for (int cpunum=0; cpunum < numcpus; cpunum++) {
+ // Check each cpu bit
+ uint64_t cpumask = ULL(1) << cpunum;
+ if (ipreq & cpumask) {
+ // Check if there is already an ipi (bits 8:11)
+ if (!(ipint & cpumask)) {
+ ipint |= cpumask;
+ tsunami->intrctrl->post(cpunum, TheISA::INTLEVEL_IRQ3, 0);
+ DPRINTF(IPI, "send IPI cpu=%d\n", cpunum);
+ }
+ else
+ warn("post IPI for CPU=%d, but IPI already\n", cpunum);
+ }
+ }
+ }
+ else
+ panic("Big IPI Request, but not processors indicated\n");
+}
+
+
void
TsunamiCChip::postRTC()
{
int size = tsunami->intrctrl->cpu->system->execContexts.size();
+ assert(size <= Tsunami::Max_CPUs);
for (int i = 0; i < size; i++) {
- if (!RTCInterrupting[i]) {
- misc |= 16 << i;
- RTCInterrupting[i] = true;
+ uint64_t cpumask = ULL(1) << i;
+ if (!(cpumask & itint)) {
+ itint |= cpumask;
tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ2, 0);
DPRINTF(Tsunami, "Posting RTC interrupt to cpu=%d", i);
}
void
TsunamiCChip::postDRIR(uint32_t interrupt)
{
- uint64_t bitvector = (uint64_t)0x1 << interrupt;
- drir |= bitvector;
+ uint64_t bitvector = ULL(1) << interrupt;
uint64_t size = tsunami->intrctrl->cpu->system->execContexts.size();
+ assert(size <= Tsunami::Max_CPUs);
+ drir |= bitvector;
+
for(int i=0; i < size; i++) {
dir[i] = dim[i] & drir;
if (dim[i] & bitvector) {
void
TsunamiCChip::clearDRIR(uint32_t interrupt)
{
- uint64_t bitvector = (uint64_t)0x1 << interrupt;
+ uint64_t bitvector = ULL(1) << interrupt;
uint64_t size = tsunami->intrctrl->cpu->system->execContexts.size();
+ assert(size <= Tsunami::Max_CPUs);
+
if (drir & bitvector)
{
drir &= ~bitvector;
Tick
TsunamiCChip::cacheAccess(MemReqPtr &req)
{
- return curTick + 1000;
+ return curTick + pioLatency;
}
{
SERIALIZE_ARRAY(dim, Tsunami::Max_CPUs);
SERIALIZE_ARRAY(dir, Tsunami::Max_CPUs);
- SERIALIZE_ARRAY(dirInterrupting, Tsunami::Max_CPUs);
- SERIALIZE_ARRAY(ipiInterrupting, Tsunami::Max_CPUs);
+ SERIALIZE_SCALAR(ipint);
+ SERIALIZE_SCALAR(itint);
SERIALIZE_SCALAR(drir);
- SERIALIZE_SCALAR(misc);
- SERIALIZE_ARRAY(RTCInterrupting, Tsunami::Max_CPUs);
}
void
{
UNSERIALIZE_ARRAY(dim, Tsunami::Max_CPUs);
UNSERIALIZE_ARRAY(dir, Tsunami::Max_CPUs);
- UNSERIALIZE_ARRAY(dirInterrupting, Tsunami::Max_CPUs);
- UNSERIALIZE_ARRAY(ipiInterrupting, Tsunami::Max_CPUs);
+ UNSERIALIZE_SCALAR(ipint);
+ UNSERIALIZE_SCALAR(itint);
UNSERIALIZE_SCALAR(drir);
- UNSERIALIZE_SCALAR(misc);
- UNSERIALIZE_ARRAY(RTCInterrupting, Tsunami::Max_CPUs);
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiCChip)
SimObjectParam<MemoryController *> mmu;
Param<Addr> addr;
SimObjectParam<Bus*> io_bus;
+ Param<Tick> pio_latency;
SimObjectParam<HierParams *> hier;
END_DECLARE_SIM_OBJECT_PARAMS(TsunamiCChip)
INIT_PARAM(mmu, "Memory Controller"),
INIT_PARAM(addr, "Device Address"),
INIT_PARAM_DFLT(io_bus, "The IO Bus to attach to", NULL),
+ INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1),
INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams)
END_INIT_SIM_OBJECT_PARAMS(TsunamiCChip)
CREATE_SIM_OBJECT(TsunamiCChip)
{
- return new TsunamiCChip(getInstanceName(), tsunami, addr, mmu, hier, io_bus);
+ return new TsunamiCChip(getInstanceName(), tsunami, addr, mmu, hier,
+ io_bus, pio_latency);
}
REGISTER_SIM_OBJECT("TsunamiCChip", TsunamiCChip)
projects / gem5.git / blobdiff