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Diffstat (limited to 'dev/tsunami_cchip.cc')
-rw-r--r--dev/tsunami_cchip.cc265
1 files changed, 189 insertions, 76 deletions
diff --git a/dev/tsunami_cchip.cc b/dev/tsunami_cchip.cc
index c389063d0..a1f900153 100644
--- a/dev/tsunami_cchip.cc
+++ b/dev/tsunami_cchip.cc
@@ -55,14 +55,6 @@ TsunamiCChip::TsunamiCChip(const string &name, Tsunami *t, Addr a,
{
mmu->add_child(this, RangeSize(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;
- }
-
if (bus) {
pioInterface = newPioInterface(name, hier, bus, this,
&TsunamiCChip::cacheAccess);
@@ -71,7 +63,14 @@ TsunamiCChip::TsunamiCChip(const string &name, Tsunami *t, Addr a,
}
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;
@@ -80,16 +79,29 @@ TsunamiCChip::TsunamiCChip(const string &name, Tsunami *t, Addr a,
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 & EV5::PAddrImplMask)) >> 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;
@@ -97,7 +109,9 @@ TsunamiCChip::read(MemReqPtr &req, uint8_t *data)
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:
@@ -147,6 +161,12 @@ TsunamiCChip::read(MemReqPtr &req, uint8_t *data)
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
@@ -158,7 +178,7 @@ TsunamiCChip::read(MemReqPtr &req, uint8_t *data)
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;
}
@@ -169,16 +189,58 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
DPRINTF(Tsunami, "write - va=%#x value=%#x size=%d \n",
req->vaddr, *(uint64_t*)data, req->size);
- Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask)) >> 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:
@@ -189,19 +251,7 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
ipreq = (*(uint64_t*)data >> 12) & 0xF;
//If it is bit 12-15, this is an IPI post
if (ipreq) {
- for (int cpunum=0; cpunum < Tsunami::Max_CPUs; cpunum++) {
- // Check each cpu bit
- if (ipreq & (1 << cpunum)) {
- // Check if there is already an ipi (bits 8:11)
- if (!(misc & (0x100 << cpunum))) {
- misc |= (0x100 << cpunum);
- tsunami->intrctrl->post(cpunum,
- TheISA::INTLEVEL_IRQ3, 0);
- DPRINTF(IPI, "send IPI cpu=%d from=%d\n",
- cpunum, req->cpu_num);
- }
- }
- }
+ reqIPI(ipreq);
supportedWrite = true;
}
@@ -209,36 +259,15 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
uint64_t ipintr;
ipintr = (*(uint64_t*)data >> 8) & 0xF;
if (ipintr) {
- for (int cpunum=0; cpunum < Tsunami::Max_CPUs; cpunum++) {
- // Check each cpu bit
- if (ipintr & (1 << cpunum)) {
- // Check if there is a pending ipi (bits 8:11)
- if (misc & (0x100 << cpunum)) {
- misc &= ~(0x100 << cpunum);
- tsunami->intrctrl->clear(cpunum,
- TheISA::INTLEVEL_IRQ3, 0);
- DPRINTF(IPI, "clear IPI IPI cpu=%d from=%d\n",
- cpunum, req->cpu_num);
- }
- }
- }
+ clearIPI(ipintr);
supportedWrite = true;
}
-
-
//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);
- }
- }
+ itintr = (*(uint64_t*)data >> 4) & 0xF;
+ if (itintr) {
+ clearITI(itintr);
supportedWrite = true;
}
@@ -261,11 +290,11 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
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;
@@ -280,7 +309,7 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
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))
{
@@ -297,7 +326,8 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
// 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);
}
@@ -324,6 +354,15 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
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");
}
@@ -342,14 +381,88 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data)
}
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);
}
@@ -360,9 +473,11 @@ TsunamiCChip::postRTC()
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) {
@@ -376,8 +491,10 @@ TsunamiCChip::postDRIR(uint32_t interrupt)
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;
@@ -407,11 +524,9 @@ TsunamiCChip::serialize(std::ostream &os)
{
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
@@ -419,11 +534,9 @@ TsunamiCChip::unserialize(Checkpoint *cp, const std::string &section)
{
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)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 10:23:21 +0000