| # 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. |
| |
| from m5.params import * |
| from m5.proxy import * |
| from m5.util.fdthelper import * |
| from m5.SimObject import * |
| from m5.objects.ClockedObject import ClockedObject |
| |
| |
| class SMMUv3DeviceInterface(ClockedObject): |
| type = "SMMUv3DeviceInterface" |
| cxx_header = "dev/arm/smmu_v3_deviceifc.hh" |
| cxx_class = "gem5::SMMUv3DeviceInterface" |
| |
| device_port = ResponsePort("Device port") |
| slave = DeprecatedParam(device_port, "`slave` is now called `device_port`") |
| ats_mem_side_port = RequestPort( |
| "ATS mem side port,sends requests and receives responses" |
| ) |
| ats_master = DeprecatedParam( |
| ats_mem_side_port, "`ats_master` is now called `ats_mem_side_port`" |
| ) |
| ats_dev_side_port = ResponsePort( |
| "ATS dev_side_port,sends responses and receives requests" |
| ) |
| ats_slave = DeprecatedParam( |
| ats_dev_side_port, "`ats_slave` is now called `ats_dev_side_port`" |
| ) |
| |
| port_width = Param.Unsigned(16, "Port width in bytes (= 1 beat)") |
| wrbuf_slots = Param.Unsigned(16, "Write buffer size (in beats)") |
| xlate_slots = Param.Unsigned(16, "Translation slots") |
| |
| utlb_entries = Param.Unsigned(32, "Micro TLB size (entries)") |
| utlb_assoc = Param.Unsigned(0, "Micro TLB associativity (0=full)") |
| utlb_policy = Param.String("rr", "Micro TLB replacement policy") |
| utlb_enable = Param.Bool(True, "Micro TLB enable") |
| utlb_lat = Param.Cycles(1, "Micro TLB lookup latency") |
| utlb_slots = Param.Cycles(1, "Micro TLB lookup slots") |
| |
| tlb_entries = Param.Unsigned(2048, "Main TLB size (entries)") |
| tlb_assoc = Param.Unsigned(4, "Main TLB associativity (0=full)") |
| tlb_policy = Param.String("rr", "Main TLB replacement policy") |
| tlb_enable = Param.Bool(True, "Main TLB enable") |
| tlb_lat = Param.Cycles(3, "Main TLB lookup latency") |
| tlb_slots = Param.Cycles(3, "Main TLB lookup slots") |
| |
| prefetch_enable = Param.Bool(False, "Enable prefetch") |
| prefetch_reserve_last_way = Param.Bool( |
| True, "Reserve last way of the main TLB for prefetched entries" |
| ) |
| |
| |
| class SMMUv3(ClockedObject): |
| type = "SMMUv3" |
| cxx_header = "dev/arm/smmu_v3.hh" |
| cxx_class = "gem5::SMMUv3" |
| |
| request = RequestPort("Request port") |
| walker = RequestPort( |
| "Request port for SMMU initiated HWTW requests (optional)" |
| ) |
| control = ResponsePort( |
| "Control port for accessing memory-mapped registers" |
| ) |
| sample_period = Param.Clock("10us", "Stats sample period") |
| reg_map = Param.AddrRange("Address range for control registers") |
| system = Param.System(Parent.any, "System this device is part of") |
| |
| irq_interface_enable = Param.Bool( |
| False, |
| "This flag enables software to program SMMU_IRQ_CTRL and " |
| "SMMU_IRQ_CTRLACK as if the model implemented architectural " |
| "interrupt sources", |
| ) |
| |
| device_interfaces = VectorParam.SMMUv3DeviceInterface( |
| [], "Responder interfaces" |
| ) |
| |
| # RESPONDER INTERFACE<->SMMU link parameters |
| ifc_smmu_lat = Param.Cycles(8, "IFC to SMMU communication latency") |
| smmu_ifc_lat = Param.Cycles(8, "SMMU to IFC communication latency") |
| |
| # SMMU parameters |
| xlate_slots = Param.Unsigned(64, "SMMU translation slots") |
| ptw_slots = Param.Unsigned(16, "SMMU page table walk slots") |
| |
| request_port_width = Param.Unsigned( |
| 16, "Request port width in bytes (= 1 beat)" |
| ) |
| |
| tlb_entries = Param.Unsigned(2048, "TLB size (entries)") |
| tlb_assoc = Param.Unsigned(4, "TLB associativity (0=full)") |
| tlb_policy = Param.String("rr", "TLB replacement policy") |
| tlb_enable = Param.Bool(False, "TLB enable") |
| tlb_lat = Param.Cycles(3, "TLB lookup latency") |
| tlb_slots = Param.Cycles(3, "TLB lookup slots") |
| |
| cfg_entries = Param.Unsigned(64, "Config cache size (entries)") |
| cfg_assoc = Param.Unsigned(4, "Config cache associativity (0=full)") |
| cfg_policy = Param.String("rr", "Config cache replacement policy") |
| cfg_enable = Param.Bool(True, "Config cache enable") |
| cfg_lat = Param.Cycles(3, "Config cache lookup latency") |
| cfg_slots = Param.Cycles(3, "Config cache lookup slots") |
| |
| ipa_entries = Param.Unsigned(128, "IPA cache size (entries)") |
| ipa_assoc = Param.Unsigned(4, "IPA cache associativity (0=full)") |
| ipa_policy = Param.String("rr", "IPA cache replacement policy") |
| ipa_enable = Param.Bool(False, "IPA cache enable") |
| ipa_lat = Param.Cycles(3, "IPA cache lookup lantency") |
| ipa_slots = Param.Cycles(3, "IPA cache lookup slots") |
| |
| walk_S1L0 = Param.Unsigned(4, "Walk cache S1L0 size (entries)") |
| walk_S1L1 = Param.Unsigned(28, "Walk cache S1L1 size (entries)") |
| walk_S1L2 = Param.Unsigned(348, "Walk cache S1L2 size (entries)") |
| walk_S1L3 = Param.Unsigned(4, "Walk cache S1L3 size (entries)") |
| walk_S2L0 = Param.Unsigned(4, "Walk cache S2L0 size (entries)") |
| walk_S2L1 = Param.Unsigned(28, "Walk cache S2L1 size (entries)") |
| walk_S2L2 = Param.Unsigned(92, "Walk cache S2L2 size (entries)") |
| walk_S2L3 = Param.Unsigned(4, "Walk cache S2L3 size (entries)") |
| walk_assoc = Param.Unsigned(4, "Walk cache associativity (0=full)") |
| walk_policy = Param.String("rr", "Walk cache replacement policy") |
| walk_enable = Param.Bool(True, "Walk cache enable") |
| wc_nonfinal_enable = Param.Bool( |
| False, "Nonfinal translations use walk cache" |
| ) |
| wc_s1_levels = Param.Unsigned( |
| 7, "S1 PT levels cached in walk cache (bit 0 is L0, bit 1 is L1, etc)" |
| ) |
| wc_s2_levels = Param.Unsigned( |
| 7, "S2 PT levels cached in walk cache (bit 0 is L0, bit 1 is L1, etc)" |
| ) |
| |
| walk_lat = Param.Cycles(4, "Walk cache lookup latency") |
| walk_slots = Param.Cycles(4, "Walk cache lookup slots") |
| |
| # [28:27] ST_LEVEL = 0b01, 2-level Stream Table supported in addition |
| # to Linear Stream table. |
| # [25:24] STALL_MODEL = 0b01, Stall is not supported, all faults |
| # terminate transaction. |
| # [22:21] TTENDIAN = 0b10, Endianness support for translation table walks |
| # (0b10 = Little-endian). |
| # [19] CD2L = 0b1, 2-level CD table supported. |
| # [18] VMID16 = 0b1, 16-bit VMID supported. |
| # [12] ASID16 = 0b1, 16-bit ASID supported. |
| # [3:2] TTF = 0b10, Translation Table Formats (Stage 1/2) |
| # (0b10 = AArch64). |
| # [1] S1P = 0b1, Stage 1 translation supported. |
| # [0] S2P = 0b1, Stage 2 translation supported. |
| smmu_idr0 = Param.UInt32(0x094C100F, "SMMU_IDR0 register") |
| |
| # [25:21] CMDQS = 0b00111, Maximum number of Command queue entries |
| # as log 2 (entries) (0b00111 = 128 entries). |
| smmu_idr1 = Param.UInt32(0x00E00000, "SMMU_IDR1 register") |
| |
| smmu_idr2 = Param.UInt32(0, "SMMU_IDR2 register") |
| smmu_idr3 = Param.UInt32(0, "SMMU_IDR3 register") |
| smmu_idr4 = Param.UInt32(0, "SMMU_IDR4 register") |
| |
| # [6] GRAN64K = 0b1, 64KB translation granule supported. |
| # [4] GRAN4K = 0b1, 4KB translation granule supported. |
| # [2:0] OAS = 0b101, Output Address Size (0b101 = 48-bit). |
| smmu_idr5 = Param.UInt32(0x55, "SMMU_IDR5 register") |
| smmu_iidr = Param.UInt32(0, "SMMU_IIDR register") |
| |
| # [7:0] (0 = SMMUv3.0) (1 = SMMUv3.1) |
| smmu_aidr = Param.UInt32(0, "SMMU_AIDR register") |
| |
| def generateDeviceTree(self, state): |
| reg_addr = self.reg_map.start |
| reg_size = self.reg_map.size() |
| node = FdtNode(f"smmuv3@{int(reg_addr):x}") |
| node.appendCompatible("arm,smmu-v3") |
| node.append( |
| FdtPropertyWords( |
| "reg", state.addrCells(reg_addr) + state.sizeCells(reg_size) |
| ) |
| ) |
| node.append(FdtPropertyWords("#iommu-cells", [1])) |
| |
| node.appendPhandle(self) |
| yield node |
| |
| def connect(self, device): |
| """ |
| Helper method used to connect the SMMU. The requestor could |
| be either a dma port (if the SMMU is attached directly to a |
| dma device), or to a request port (this is the case where the SMMU |
| is attached to a bridge). |
| """ |
| |
| device_interface = SMMUv3DeviceInterface() |
| |
| if hasattr(device, "request_port"): |
| device_interface.device_port = device.request_port |
| elif hasattr(device, "dma"): |
| device_interface.device_port = device.dma |
| else: |
| print("Unable to attach SMMUv3\n") |
| sys.exit(1) |
| |
| self.device_interfaces.append(device_interface) |
| |
| # Storing a reference to the smmu to be used when generating |
| # the binding in the device DTB. |
| device._iommu = self |
