| /* |
| * Copyright (c) 2013, 2018-2020 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "dev/arm/smmu_v3.hh" |
| |
| #include <cstddef> |
| #include <cstring> |
| |
| #include "base/bitfield.hh" |
| #include "base/cast.hh" |
| #include "base/compiler.hh" |
| #include "base/logging.hh" |
| #include "base/trace.hh" |
| #include "base/types.hh" |
| #include "debug/Checkpoint.hh" |
| #include "debug/SMMUv3.hh" |
| #include "dev/arm/smmu_v3_transl.hh" |
| #include "mem/packet_access.hh" |
| #include "sim/system.hh" |
| |
| namespace gem5 |
| { |
| |
| SMMUv3::SMMUv3(const SMMUv3Params ¶ms) : |
| ClockedObject(params), |
| system(*params.system), |
| requestorId(params.system->getRequestorId(this)), |
| requestPort(name() + ".request", *this), |
| tableWalkPort(name() + ".walker", *this), |
| controlPort(name() + ".control", *this, params.reg_map), |
| irqInterfaceEnable(params.irq_interface_enable), |
| tlb(params.tlb_entries, params.tlb_assoc, params.tlb_policy, this), |
| configCache(params.cfg_entries, params.cfg_assoc, params.cfg_policy, this), |
| ipaCache(params.ipa_entries, params.ipa_assoc, params.ipa_policy, this), |
| walkCache({ { params.walk_S1L0, params.walk_S1L1, |
| params.walk_S1L2, params.walk_S1L3, |
| params.walk_S2L0, params.walk_S2L1, |
| params.walk_S2L2, params.walk_S2L3 } }, |
| params.walk_assoc, params.walk_policy, this), |
| tlbEnable(params.tlb_enable), |
| configCacheEnable(params.cfg_enable), |
| ipaCacheEnable(params.ipa_enable), |
| walkCacheEnable(params.walk_enable), |
| tableWalkPortEnable(false), |
| walkCacheNonfinalEnable(params.wc_nonfinal_enable), |
| walkCacheS1Levels(params.wc_s1_levels), |
| walkCacheS2Levels(params.wc_s2_levels), |
| requestPortWidth(params.request_port_width), |
| tlbSem(params.tlb_slots), |
| ifcSmmuSem(1), |
| smmuIfcSem(1), |
| configSem(params.cfg_slots), |
| ipaSem(params.ipa_slots), |
| walkSem(params.walk_slots), |
| requestPortSem(1), |
| transSem(params.xlate_slots), |
| ptwSem(params.ptw_slots), |
| cycleSem(1), |
| tlbLat(params.tlb_lat), |
| ifcSmmuLat(params.ifc_smmu_lat), |
| smmuIfcLat(params.smmu_ifc_lat), |
| configLat(params.cfg_lat), |
| ipaLat(params.ipa_lat), |
| walkLat(params.walk_lat), |
| stats(this), |
| deviceInterfaces(params.device_interfaces), |
| commandExecutor(name() + ".cmd_exec", *this), |
| regsMap(params.reg_map), |
| processCommandsEvent(this) |
| { |
| fatal_if(regsMap.size() != SMMU_REG_SIZE, |
| "Invalid register map size: %#x different than SMMU_REG_SIZE = %#x\n", |
| regsMap.size(), SMMU_REG_SIZE); |
| |
| // Init smmu registers to 0 |
| memset(®s, 0, sizeof(regs)); |
| |
| // Setup RO ID registers |
| regs.idr0 = params.smmu_idr0; |
| regs.idr1 = params.smmu_idr1; |
| regs.idr2 = params.smmu_idr2; |
| regs.idr3 = params.smmu_idr3; |
| regs.idr4 = params.smmu_idr4; |
| regs.idr5 = params.smmu_idr5; |
| regs.iidr = params.smmu_iidr; |
| regs.aidr = params.smmu_aidr; |
| |
| // TODO: At the moment it possible to set the ID registers to hold |
| // any possible value. It would be nice to have a sanity check here |
| // at construction time in case some idx registers are programmed to |
| // store an unallowed values or if the are configuration conflicts. |
| warn("SMMUv3 IDx register values unchecked\n"); |
| |
| for (auto ifc : deviceInterfaces) |
| ifc->setSMMU(this); |
| } |
| |
| bool |
| SMMUv3::recvTimingResp(PacketPtr pkt) |
| { |
| DPRINTF(SMMUv3, "[t] requestor resp addr=%#x size=%#x\n", |
| pkt->getAddr(), pkt->getSize()); |
| |
| // @todo: We need to pay for this and not just zero it out |
| pkt->headerDelay = pkt->payloadDelay = 0; |
| |
| SMMUProcess *proc = |
| safe_cast<SMMUProcess *>(pkt->popSenderState()); |
| |
| runProcessTiming(proc, pkt); |
| |
| return true; |
| } |
| |
| void |
| SMMUv3::recvReqRetry() |
| { |
| assert(!packetsToRetry.empty()); |
| |
| while (!packetsToRetry.empty()) { |
| SMMUAction a = packetsToRetry.front(); |
| |
| assert(a.type==ACTION_SEND_REQ || a.type==ACTION_SEND_REQ_FINAL); |
| |
| DPRINTF(SMMUv3, "[t] requestor retr addr=%#x size=%#x\n", |
| a.pkt->getAddr(), a.pkt->getSize()); |
| |
| if (!requestPort.sendTimingReq(a.pkt)) |
| break; |
| |
| packetsToRetry.pop(); |
| |
| /* |
| * ACTION_SEND_REQ_FINAL means that we have just forwarded the packet |
| * on the requestor interface; this means that we no longer hold on to |
| * that transaction and therefore can accept a new one. |
| * If the response port was stalled then unstall it (send retry). |
| */ |
| if (a.type == ACTION_SEND_REQ_FINAL) |
| scheduleDeviceRetries(); |
| } |
| } |
| |
| bool |
| SMMUv3::tableWalkRecvTimingResp(PacketPtr pkt) |
| { |
| DPRINTF(SMMUv3, "[t] requestor HWTW resp addr=%#x size=%#x\n", |
| pkt->getAddr(), pkt->getSize()); |
| |
| // @todo: We need to pay for this and not just zero it out |
| pkt->headerDelay = pkt->payloadDelay = 0; |
| |
| SMMUProcess *proc = |
| safe_cast<SMMUProcess *>(pkt->popSenderState()); |
| |
| runProcessTiming(proc, pkt); |
| |
| return true; |
| } |
| |
| void |
| SMMUv3::tableWalkRecvReqRetry() |
| { |
| assert(tableWalkPortEnable); |
| assert(!packetsTableWalkToRetry.empty()); |
| |
| while (!packetsTableWalkToRetry.empty()) { |
| SMMUAction a = packetsTableWalkToRetry.front(); |
| |
| assert(a.type==ACTION_SEND_REQ); |
| |
| DPRINTF(SMMUv3, "[t] requestor HWTW retr addr=%#x size=%#x\n", |
| a.pkt->getAddr(), a.pkt->getSize()); |
| |
| if (!tableWalkPort.sendTimingReq(a.pkt)) |
| break; |
| |
| packetsTableWalkToRetry.pop(); |
| } |
| } |
| |
| void |
| SMMUv3::scheduleDeviceRetries() |
| { |
| for (auto ifc : deviceInterfaces) { |
| ifc->scheduleDeviceRetry(); |
| } |
| } |
| |
| SMMUAction |
| SMMUv3::runProcess(SMMUProcess *proc, PacketPtr pkt) |
| { |
| if (system.isAtomicMode()) { |
| return runProcessAtomic(proc, pkt); |
| } else if (system.isTimingMode()) { |
| return runProcessTiming(proc, pkt); |
| } else { |
| panic("Not in timing or atomic mode!"); |
| } |
| } |
| |
| SMMUAction |
| SMMUv3::runProcessAtomic(SMMUProcess *proc, PacketPtr pkt) |
| { |
| SMMUAction action; |
| Tick delay = 0; |
| bool finished = false; |
| |
| do { |
| action = proc->run(pkt); |
| |
| switch (action.type) { |
| case ACTION_SEND_REQ: |
| // Send an MMU initiated request on the table walk port if |
| // it is enabled. Otherwise, fall through and handle same |
| // as the final ACTION_SEND_REQ_FINAL request. |
| if (tableWalkPortEnable) { |
| delay += tableWalkPort.sendAtomic(action.pkt); |
| pkt = action.pkt; |
| break; |
| } |
| [[fallthrough]]; |
| case ACTION_SEND_REQ_FINAL: |
| delay += requestPort.sendAtomic(action.pkt); |
| pkt = action.pkt; |
| break; |
| |
| case ACTION_SEND_RESP: |
| case ACTION_SEND_RESP_ATS: |
| case ACTION_SLEEP: |
| finished = true; |
| break; |
| |
| case ACTION_DELAY: |
| delay += action.delay; |
| break; |
| |
| case ACTION_TERMINATE: |
| panic("ACTION_TERMINATE in atomic mode\n"); |
| |
| default: |
| panic("Unknown action\n"); |
| } |
| } while (!finished); |
| |
| action.delay = delay; |
| |
| return action; |
| } |
| |
| SMMUAction |
| SMMUv3::runProcessTiming(SMMUProcess *proc, PacketPtr pkt) |
| { |
| SMMUAction action = proc->run(pkt); |
| |
| switch (action.type) { |
| case ACTION_SEND_REQ: |
| // Send an MMU initiated request on the table walk port if it is |
| // enabled. Otherwise, fall through and handle same as the final |
| // ACTION_SEND_REQ_FINAL request. |
| if (tableWalkPortEnable) { |
| action.pkt->pushSenderState(proc); |
| |
| DPRINTF(SMMUv3, "[t] requestor HWTW req addr=%#x size=%#x\n", |
| action.pkt->getAddr(), action.pkt->getSize()); |
| |
| if (packetsTableWalkToRetry.empty() |
| && tableWalkPort.sendTimingReq(action.pkt)) { |
| scheduleDeviceRetries(); |
| } else { |
| DPRINTF(SMMUv3, "[t] requestor HWTW req needs retry," |
| " qlen=%d\n", packetsTableWalkToRetry.size()); |
| packetsTableWalkToRetry.push(action); |
| } |
| |
| break; |
| } |
| [[fallthrough]]; |
| case ACTION_SEND_REQ_FINAL: |
| action.pkt->pushSenderState(proc); |
| |
| DPRINTF(SMMUv3, "[t] requestor req addr=%#x size=%#x\n", |
| action.pkt->getAddr(), action.pkt->getSize()); |
| |
| if (packetsToRetry.empty() && |
| requestPort.sendTimingReq(action.pkt)) { |
| scheduleDeviceRetries(); |
| } else { |
| DPRINTF(SMMUv3, "[t] requestor req needs retry, qlen=%d\n", |
| packetsToRetry.size()); |
| packetsToRetry.push(action); |
| } |
| |
| break; |
| |
| case ACTION_SEND_RESP: |
| // @todo: We need to pay for this and not just zero it out |
| action.pkt->headerDelay = action.pkt->payloadDelay = 0; |
| |
| DPRINTF(SMMUv3, "[t] responder resp addr=%#x size=%#x\n", |
| action.pkt->getAddr(), |
| action.pkt->getSize()); |
| |
| assert(action.ifc); |
| action.ifc->schedTimingResp(action.pkt); |
| |
| delete proc; |
| break; |
| |
| case ACTION_SEND_RESP_ATS: |
| // @todo: We need to pay for this and not just zero it out |
| action.pkt->headerDelay = action.pkt->payloadDelay = 0; |
| |
| DPRINTF(SMMUv3, "[t] ATS responder resp addr=%#x size=%#x\n", |
| action.pkt->getAddr(), action.pkt->getSize()); |
| |
| assert(action.ifc); |
| action.ifc->schedAtsTimingResp(action.pkt); |
| |
| delete proc; |
| break; |
| |
| case ACTION_DELAY: |
| case ACTION_SLEEP: |
| break; |
| |
| case ACTION_TERMINATE: |
| delete proc; |
| break; |
| |
| default: |
| panic("Unknown action\n"); |
| } |
| |
| return action; |
| } |
| |
| void |
| SMMUv3::processCommands() |
| { |
| DPRINTF(SMMUv3, "processCommands()\n"); |
| |
| if (system.isAtomicMode()) { |
| SMMUAction a = runProcessAtomic(&commandExecutor, NULL); |
| (void) a; |
| } else if (system.isTimingMode()) { |
| if (!commandExecutor.isBusy()) |
| runProcessTiming(&commandExecutor, NULL); |
| } else { |
| panic("Not in timing or atomic mode!"); |
| } |
| } |
| |
| void |
| SMMUv3::processCommand(const SMMUCommand &cmd) |
| { |
| switch (cmd.dw0.type) { |
| case CMD_PRF_CONFIG: |
| DPRINTF(SMMUv3, "CMD_PREFETCH_CONFIG - ignored\n"); |
| break; |
| |
| case CMD_PRF_ADDR: |
| DPRINTF(SMMUv3, "CMD_PREFETCH_ADDR - ignored\n"); |
| break; |
| |
| case CMD_CFGI_STE: { |
| DPRINTF(SMMUv3, "CMD_CFGI_STE sid=%#x\n", cmd.dw0.sid); |
| configCache.invalidateSID(cmd.dw0.sid); |
| |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateSID(cmd.dw0.sid); |
| dev_interface->mainTLB->invalidateSID(cmd.dw0.sid); |
| } |
| break; |
| } |
| |
| case CMD_CFGI_STE_RANGE: { |
| const auto range = cmd.dw1.range; |
| if (range == 31) { |
| // CMD_CFGI_ALL is an alias of CMD_CFGI_STE_RANGE with |
| // range = 31 |
| DPRINTF(SMMUv3, "CMD_CFGI_ALL\n"); |
| configCache.invalidateAll(); |
| |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateAll(); |
| dev_interface->mainTLB->invalidateAll(); |
| } |
| } else { |
| DPRINTF(SMMUv3, "CMD_CFGI_STE_RANGE\n"); |
| const auto start_sid = cmd.dw0.sid & ~((1 << (range + 1)) - 1); |
| const auto end_sid = start_sid + (1 << (range + 1)) - 1; |
| for (auto sid = start_sid; sid <= end_sid; sid++) { |
| configCache.invalidateSID(sid); |
| |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateSID(sid); |
| dev_interface->mainTLB->invalidateSID(sid); |
| } |
| } |
| } |
| break; |
| } |
| |
| case CMD_CFGI_CD: { |
| DPRINTF(SMMUv3, "CMD_CFGI_CD sid=%#x ssid=%#x\n", |
| cmd.dw0.sid, cmd.dw0.ssid); |
| configCache.invalidateSSID(cmd.dw0.sid, cmd.dw0.ssid); |
| |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateSSID( |
| cmd.dw0.sid, cmd.dw0.ssid); |
| dev_interface->mainTLB->invalidateSSID( |
| cmd.dw0.sid, cmd.dw0.ssid); |
| } |
| break; |
| } |
| |
| case CMD_CFGI_CD_ALL: { |
| DPRINTF(SMMUv3, "CMD_CFGI_CD_ALL sid=%#x\n", cmd.dw0.sid); |
| configCache.invalidateSID(cmd.dw0.sid); |
| |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateSID(cmd.dw0.sid); |
| dev_interface->mainTLB->invalidateSID(cmd.dw0.sid); |
| } |
| break; |
| } |
| |
| case CMD_TLBI_NH_ALL: { |
| DPRINTF(SMMUv3, "CMD_TLBI_NH_ALL vmid=%#x\n", cmd.dw0.vmid); |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateVMID(cmd.dw0.vmid); |
| dev_interface->mainTLB->invalidateVMID(cmd.dw0.vmid); |
| } |
| tlb.invalidateVMID(cmd.dw0.vmid); |
| walkCache.invalidateVMID(cmd.dw0.vmid); |
| break; |
| } |
| |
| case CMD_TLBI_NH_ASID: { |
| DPRINTF(SMMUv3, "CMD_TLBI_NH_ASID asid=%#x vmid=%#x\n", |
| cmd.dw0.asid, cmd.dw0.vmid); |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateASID( |
| cmd.dw0.asid, cmd.dw0.vmid); |
| dev_interface->mainTLB->invalidateASID( |
| cmd.dw0.asid, cmd.dw0.vmid); |
| } |
| tlb.invalidateASID(cmd.dw0.asid, cmd.dw0.vmid); |
| walkCache.invalidateASID(cmd.dw0.asid, cmd.dw0.vmid); |
| break; |
| } |
| |
| case CMD_TLBI_NH_VAA: { |
| const Addr addr = cmd.addr(); |
| DPRINTF(SMMUv3, "CMD_TLBI_NH_VAA va=%#08x vmid=%#x\n", |
| addr, cmd.dw0.vmid); |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateVAA( |
| addr, cmd.dw0.vmid); |
| dev_interface->mainTLB->invalidateVAA( |
| addr, cmd.dw0.vmid); |
| } |
| tlb.invalidateVAA(addr, cmd.dw0.vmid); |
| const bool leaf_only = cmd.dw1.leaf ? true : false; |
| walkCache.invalidateVAA(addr, cmd.dw0.vmid, leaf_only); |
| break; |
| } |
| |
| case CMD_TLBI_NH_VA: { |
| const Addr addr = cmd.addr(); |
| DPRINTF(SMMUv3, "CMD_TLBI_NH_VA va=%#08x asid=%#x vmid=%#x\n", |
| addr, cmd.dw0.asid, cmd.dw0.vmid); |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateVA( |
| addr, cmd.dw0.asid, cmd.dw0.vmid); |
| dev_interface->mainTLB->invalidateVA( |
| addr, cmd.dw0.asid, cmd.dw0.vmid); |
| } |
| tlb.invalidateVA(addr, cmd.dw0.asid, cmd.dw0.vmid); |
| const bool leaf_only = cmd.dw1.leaf ? true : false; |
| walkCache.invalidateVA(addr, cmd.dw0.asid, cmd.dw0.vmid, |
| leaf_only); |
| break; |
| } |
| |
| case CMD_TLBI_S2_IPA: { |
| const Addr addr = cmd.addr(); |
| DPRINTF(SMMUv3, "CMD_TLBI_S2_IPA ipa=%#08x vmid=%#x\n", |
| addr, cmd.dw0.vmid); |
| // This does not invalidate TLBs containing |
| // combined Stage1 + Stage2 translations, as per the spec. |
| ipaCache.invalidateIPA(addr, cmd.dw0.vmid); |
| |
| if (!cmd.dw1.leaf) |
| walkCache.invalidateVMID(cmd.dw0.vmid); |
| break; |
| } |
| |
| case CMD_TLBI_S12_VMALL: { |
| DPRINTF(SMMUv3, "CMD_TLBI_S12_VMALL vmid=%#x\n", cmd.dw0.vmid); |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateVMID(cmd.dw0.vmid); |
| dev_interface->mainTLB->invalidateVMID(cmd.dw0.vmid); |
| } |
| tlb.invalidateVMID(cmd.dw0.vmid); |
| ipaCache.invalidateVMID(cmd.dw0.vmid); |
| walkCache.invalidateVMID(cmd.dw0.vmid); |
| break; |
| } |
| |
| case CMD_TLBI_NSNH_ALL: { |
| DPRINTF(SMMUv3, "CMD_TLBI_NSNH_ALL\n"); |
| for (auto dev_interface : deviceInterfaces) { |
| dev_interface->microTLB->invalidateAll(); |
| dev_interface->mainTLB->invalidateAll(); |
| } |
| tlb.invalidateAll(); |
| ipaCache.invalidateAll(); |
| walkCache.invalidateAll(); |
| break; |
| } |
| |
| case CMD_RESUME: |
| DPRINTF(SMMUv3, "CMD_RESUME\n"); |
| panic("resume unimplemented"); |
| break; |
| |
| default: |
| warn("Unimplemented command %#x\n", cmd.dw0.type); |
| break; |
| } |
| } |
| |
| Tick |
| SMMUv3::readControl(PacketPtr pkt) |
| { |
| DPRINTF(SMMUv3, "readControl: addr=%08x size=%d\n", |
| pkt->getAddr(), pkt->getSize()); |
| |
| int offset = pkt->getAddr() - regsMap.start(); |
| assert(offset >= 0 && offset < SMMU_REG_SIZE); |
| |
| if (inSecureBlock(offset)) { |
| warn("smmu: secure registers (0x%x) are not implemented\n", |
| offset); |
| } |
| |
| auto reg_ptr = regs.data + offset; |
| |
| switch (pkt->getSize()) { |
| case sizeof(uint32_t): |
| pkt->setLE<uint32_t>(*reinterpret_cast<uint32_t *>(reg_ptr)); |
| break; |
| case sizeof(uint64_t): |
| pkt->setLE<uint64_t>(*reinterpret_cast<uint64_t *>(reg_ptr)); |
| break; |
| default: |
| panic("smmu: unallowed access size: %d bytes\n", pkt->getSize()); |
| break; |
| } |
| |
| pkt->makeAtomicResponse(); |
| |
| return 0; |
| } |
| |
| Tick |
| SMMUv3::writeControl(PacketPtr pkt) |
| { |
| int offset = pkt->getAddr() - regsMap.start(); |
| assert(offset >= 0 && offset < SMMU_REG_SIZE); |
| |
| DPRINTF(SMMUv3, "writeControl: addr=%08x size=%d data=%16x\n", |
| pkt->getAddr(), pkt->getSize(), |
| pkt->getSize() == sizeof(uint64_t) ? |
| pkt->getLE<uint64_t>() : pkt->getLE<uint32_t>()); |
| |
| switch (offset) { |
| case offsetof(SMMURegs, cr0): |
| assert(pkt->getSize() == sizeof(uint32_t)); |
| regs.cr0 = regs.cr0ack = pkt->getLE<uint32_t>(); |
| break; |
| case offsetof(SMMURegs, irq_ctrl): |
| assert(pkt->getSize() == sizeof(uint32_t)); |
| if (irqInterfaceEnable) { |
| warn("SMMUv3::%s No support for interrupt sources", __func__); |
| regs.irq_ctrl = regs.irq_ctrlack = pkt->getLE<uint32_t>(); |
| } |
| break; |
| |
| case offsetof(SMMURegs, cr1): |
| case offsetof(SMMURegs, cr2): |
| case offsetof(SMMURegs, strtab_base_cfg): |
| case offsetof(SMMURegs, eventq_cons): |
| case offsetof(SMMURegs, eventq_irq_cfg1): |
| case offsetof(SMMURegs, priq_cons): |
| assert(pkt->getSize() == sizeof(uint32_t)); |
| *reinterpret_cast<uint32_t *>(regs.data + offset) = |
| pkt->getLE<uint32_t>(); |
| break; |
| |
| case offsetof(SMMURegs, cmdq_cons): |
| assert(pkt->getSize() == sizeof(uint32_t)); |
| if (regs.cr0 & CR0_CMDQEN_MASK) { |
| warn("CMDQ is enabled: ignoring write to CMDQ_CONS\n"); |
| } else { |
| *reinterpret_cast<uint32_t *>(regs.data + offset) = |
| pkt->getLE<uint32_t>(); |
| } |
| break; |
| |
| case offsetof(SMMURegs, cmdq_prod): |
| assert(pkt->getSize() == sizeof(uint32_t)); |
| *reinterpret_cast<uint32_t *>(regs.data + offset) = |
| pkt->getLE<uint32_t>(); |
| schedule(processCommandsEvent, nextCycle()); |
| break; |
| |
| case offsetof(SMMURegs, strtab_base): |
| case offsetof(SMMURegs, eventq_irq_cfg0): |
| assert(pkt->getSize() == sizeof(uint64_t)); |
| *reinterpret_cast<uint64_t *>(regs.data + offset) = |
| pkt->getLE<uint64_t>(); |
| break; |
| |
| case offsetof(SMMURegs, cmdq_base): |
| assert(pkt->getSize() == sizeof(uint64_t)); |
| if (regs.cr0 & CR0_CMDQEN_MASK) { |
| warn("CMDQ is enabled: ignoring write to CMDQ_BASE\n"); |
| } else { |
| *reinterpret_cast<uint64_t *>(regs.data + offset) = |
| pkt->getLE<uint64_t>(); |
| regs.cmdq_cons = 0; |
| regs.cmdq_prod = 0; |
| } |
| break; |
| |
| case offsetof(SMMURegs, eventq_base): |
| assert(pkt->getSize() == sizeof(uint64_t)); |
| *reinterpret_cast<uint64_t *>(regs.data + offset) = |
| pkt->getLE<uint64_t>(); |
| regs.eventq_cons = 0; |
| regs.eventq_prod = 0; |
| break; |
| |
| case offsetof(SMMURegs, priq_base): |
| assert(pkt->getSize() == sizeof(uint64_t)); |
| *reinterpret_cast<uint64_t *>(regs.data + offset) = |
| pkt->getLE<uint64_t>(); |
| regs.priq_cons = 0; |
| regs.priq_prod = 0; |
| break; |
| |
| default: |
| if (inSecureBlock(offset)) { |
| warn("smmu: secure registers (0x%x) are not implemented\n", |
| offset); |
| } else { |
| warn("smmu: write to read-only/undefined register at 0x%x\n", |
| offset); |
| } |
| } |
| |
| pkt->makeAtomicResponse(); |
| |
| return 0; |
| } |
| |
| bool |
| SMMUv3::inSecureBlock(uint32_t offs) const |
| { |
| if (offs >= offsetof(SMMURegs, _secure_regs) && offs < SMMU_SECURE_SZ) |
| return true; |
| else |
| return false; |
| } |
| |
| void |
| SMMUv3::init() |
| { |
| // make sure both sides are connected and have the same block size |
| if (!requestPort.isConnected()) |
| fatal("Request port is not connected.\n"); |
| |
| // If the second request port is connected for the table walks, enable |
| // the mode to send table walks through this port instead |
| if (tableWalkPort.isConnected()) |
| tableWalkPortEnable = true; |
| |
| // notify the request side of our address ranges |
| for (auto ifc : deviceInterfaces) { |
| ifc->sendRange(); |
| } |
| |
| if (controlPort.isConnected()) |
| controlPort.sendRangeChange(); |
| } |
| |
| SMMUv3::SMMUv3Stats::SMMUv3Stats(statistics::Group *parent) |
| : statistics::Group(parent), |
| ADD_STAT(steL1Fetches, statistics::units::Count::get(), "STE L1 fetches"), |
| ADD_STAT(steFetches, statistics::units::Count::get(), "STE fetches"), |
| ADD_STAT(cdL1Fetches, statistics::units::Count::get(), "CD L1 fetches"), |
| ADD_STAT(cdFetches, statistics::units::Count::get(), "CD fetches"), |
| ADD_STAT(translationTimeDist, statistics::units::Tick::get(), |
| "Time to translate address"), |
| ADD_STAT(ptwTimeDist, statistics::units::Tick::get(), |
| "Time to walk page tables") |
| { |
| using namespace statistics; |
| |
| steL1Fetches |
| .flags(pdf); |
| |
| steFetches |
| .flags(pdf); |
| |
| cdL1Fetches |
| .flags(pdf); |
| |
| cdFetches |
| .flags(pdf); |
| |
| translationTimeDist |
| .init(0, 2000000, 2000) |
| .flags(pdf); |
| |
| ptwTimeDist |
| .init(0, 2000000, 2000) |
| .flags(pdf); |
| } |
| |
| DrainState |
| SMMUv3::drain() |
| { |
| // Wait until the Command Executor is not busy |
| if (commandExecutor.isBusy()) { |
| return DrainState::Draining; |
| } |
| return DrainState::Drained; |
| } |
| |
| void |
| SMMUv3::serialize(CheckpointOut &cp) const |
| { |
| DPRINTF(Checkpoint, "Serializing SMMUv3\n"); |
| |
| SERIALIZE_ARRAY(regs.data, sizeof(regs.data) / sizeof(regs.data[0])); |
| } |
| |
| void |
| SMMUv3::unserialize(CheckpointIn &cp) |
| { |
| DPRINTF(Checkpoint, "Unserializing SMMUv3\n"); |
| |
| UNSERIALIZE_ARRAY(regs.data, sizeof(regs.data) / sizeof(regs.data[0])); |
| } |
| |
| Port& |
| SMMUv3::getPort(const std::string &name, PortID id) |
| { |
| if (name == "request") { |
| return requestPort; |
| } else if (name == "walker") { |
| return tableWalkPort; |
| } else if (name == "control") { |
| return controlPort; |
| } else { |
| return ClockedObject::getPort(name, id); |
| } |
| } |
| |
| } // namespace gem5 |
