mirror of
https://github.com/genodelabs/genode.git
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cacb6136fa
To discharge the generic platform driver from certain PCI bus scanning, and ACPI + kernel specifics, this commit introduces a new component, which consumes the acpi drivers report and the platform_info from core to prepare a devices ROM for the platform driver that contains all PCI devices and its resources. Fix genodelabs/genode#4495
567 lines
14 KiB
C++
567 lines
14 KiB
C++
/*
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* \brief PCI, PCI-x, PCI-Express configuration declarations
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* \author Stefan Kalkowski
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* \date 2021-12-01
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*/
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/*
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* Copyright (C) 2021 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef __INCLUDE__PCI__CONFIG_H__
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#define __INCLUDE__PCI__CONFIG_H__
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#include <base/log.h>
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#include <pci/types.h>
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#include <util/reconstructible.h>
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#include <util/mmio.h>
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namespace Pci {
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struct Config;
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struct Config_type0;
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struct Config_type1;
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enum {
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DEVICES_PER_BUS_MAX = 32,
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FUNCTION_PER_DEVICE_MAX = 8,
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FUNCTION_PER_BUS_MAX = DEVICES_PER_BUS_MAX *
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FUNCTION_PER_DEVICE_MAX,
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FUNCTION_CONFIG_SPACE_SIZE = 4096,
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};
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};
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struct Pci::Config : Genode::Mmio
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{
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struct Vendor : Register<0x0, 16>
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{
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enum { INVALID = 0xffff };
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};
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struct Device : Register<0x2, 16> {};
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struct Command : Register<0x4, 16>
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{
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struct Io_space_enable : Bitfield<0, 1> {};
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struct Memory_space_enable : Bitfield<1, 1> {};
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struct Bus_master_enable : Bitfield<2, 1> {};
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struct Special_cycle_enable : Bitfield<3, 1> {};
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struct Memory_write_invalidate : Bitfield<4, 1> {};
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struct Vga_palette_snoop : Bitfield<5, 1> {};
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struct Parity_error_response : Bitfield<6, 1> {};
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struct Idsel : Bitfield<7, 1> {};
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struct Serror_enable : Bitfield<8, 1> {};
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struct Interrupt_enable : Bitfield<10, 1> {};
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};
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struct Status : Register<0x6, 16>
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{
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struct Interrupt : Bitfield<3,1> {};
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struct Capabilities : Bitfield<4,1> {};
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};
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struct Class_code_rev_id : Register<0x8, 32>
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{
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struct Class_code : Bitfield<8, 24> {};
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};
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struct Iface_class_code : Register<0x9, 8> {};
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struct Sub_class_code : Register<0xa, 8> {};
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struct Base_class_code : Register<0xb, 8>
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{
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enum { BRIDGE = 6 };
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};
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struct Header_type : Register<0xe, 8>
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{
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struct Type : Bitfield<0,7> {};
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struct Multi_function : Bitfield<7,1> {};
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};
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struct Base_address : Mmio
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{
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struct Bar_32bit : Register<0, 32>
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{
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struct Memory_space_indicator : Bitfield<0,1>
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{
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enum { MEMORY = 0, IO = 1 };
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};
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struct Memory_type : Bitfield<1,2>
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{
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enum { SIZE_32BIT = 0, SIZE_64BIT = 2 };
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};
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struct Io_base : Bitfield<2, 30> {};
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struct Memory_base : Bitfield<7, 25> {};
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};
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struct Upper_bits : Register<0x4, 32> { };
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Bar_32bit::access_t _conf { 0 };
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Base_address(Genode::addr_t base) : Mmio(base)
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{
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Bar_32bit::access_t v = read<Bar_32bit>();
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write<Bar_32bit>(0xffffffff);
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_conf = read<Bar_32bit>();
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write<Bar_32bit>(v);
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}
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bool valid() { return _conf != 0; }
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bool memory() {
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return !Bar_32bit::Memory_space_indicator::get(_conf); }
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bool bit64()
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{
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return Bar_32bit::Memory_type::get(_conf) ==
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Bar_32bit::Memory_type::SIZE_64BIT;
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}
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Genode::size_t size()
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{
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return 1 + (memory() ? ~Bar_32bit::Memory_base::masked(_conf)
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: ~Bar_32bit::Io_base::masked(_conf));
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}
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Genode::uint64_t addr()
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{
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return (bit64() ? ((Genode::uint64_t)read<Upper_bits>()<<32) : 0UL)
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| Bar_32bit::Memory_base::masked(read<Bar_32bit>());
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}
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};
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enum Base_addresses {
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BASE_ADDRESS_0 = 0x10,
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BASE_ADDRESS_COUNT_TYPE_0 = 6,
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BASE_ADDRESS_COUNT_TYPE_1 = 2,
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};
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struct Capability_pointer : Register<0x34, 8> {};
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struct Irq_line : Register<0x3c, 8> {};
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struct Irq_pin : Register<0x3d, 8> {};
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/**********************
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** PCI Capabilities **
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**********************/
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struct Pci_capability : Genode::Mmio
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{
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struct Id : Register<0,8>
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{
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enum {
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POWER_MANAGEMENT = 0x1,
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AGP = 0x2,
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VITAL_PRODUCT = 0x3,
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MSI = 0x5,
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VENDOR = 0x9,
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DEBUG = 0xa,
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BRIDGE_SUB = 0xd,
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PCI_E = 0x10,
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MSI_X = 0x11,
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SATA = 0x12,
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ADVANCED = 0x13,
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};
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};
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struct Pointer : Register<1,8> {};
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using Genode::Mmio::Mmio;
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};
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struct Power_management_capability : Pci_capability
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{
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struct Capabilities : Register<0x2, 16> {};
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struct Control_status : Register<0x4, 16>
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{
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struct Pme_status : Bitfield<15,1> {};
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};
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struct Data : Register<0x7, 8> {};
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using Pci_capability::Pci_capability;
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};
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struct Msi_capability : Pci_capability
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{
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struct Control : Register<0x2, 16>
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{
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struct Enable : Bitfield<0,1> {};
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struct Multi_message_capable : Bitfield<1,3> {};
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struct Multi_message_enable : Bitfield<4,3> {};
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struct Large_address_capable : Bitfield<7,1> {};
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};
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struct Address_32 : Register<0x4, 32> {};
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struct Data_32 : Register<0x8, 16> {};
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struct Address_64_lower : Register<0x4, 32> {};
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struct Address_64_upper : Register<0x8, 32> {};
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struct Data_64 : Register<0xc, 16> {};
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using Pci_capability::Pci_capability;
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void enable(Genode::addr_t address,
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Genode::uint16_t data)
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{
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if (read<Control::Large_address_capable>()) {
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Genode::uint64_t addr = address;
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write<Address_64_upper>((Genode::uint32_t)(addr >> 32));
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write<Address_64_lower>((Genode::uint32_t)addr);
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write<Data_64>(data);
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} else {
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write<Address_32>((Genode::uint32_t)address);
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write<Data_32>(data);
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}
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write<Control::Enable>(1);
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};
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};
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struct Msi_x_capability : Pci_capability
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{
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struct Control : Register<0x2, 16>
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{
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struct Size : Bitfield<0, 11> {};
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struct Function_mask : Bitfield<14, 1> {};
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struct Enable : Bitfield<15, 1> {};
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};
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struct Table : Register<0x4, 32>
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{
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struct Bar_index : Bitfield<0, 3> {};
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struct Offset : Bitfield<3, 29> {};
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};
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struct Pending_bit_array : Register<0x8, 32>
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{
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struct Bar_index : Bitfield<0, 3> {};
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struct Offset : Bitfield<3, 29> {};
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};
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struct Table_entry : Genode::Mmio
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{
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struct Address_64_lower : Register<0x0, 32> { };
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struct Address_64_upper : Register<0x4, 32> { };
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struct Data : Register<0x8, 32> { };
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struct Vector_control : Register<0xc, 32>
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{
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struct Mask : Bitfield <0, 1> { };
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};
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using Genode::Mmio::Mmio;
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};
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using Pci_capability::Pci_capability;
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};
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struct Pci_express_capability : Pci_capability
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{
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struct Capabilities : Register<0x2, 16> {};
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struct Device_capabilities : Register<0x4, 32> {};
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struct Device_control : Register<0x8, 16> {};
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struct Device_status : Register<0xa, 16>
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{
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struct Correctable_error : Bitfield<0, 1> {};
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struct Non_fatal_error : Bitfield<1, 1> {};
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struct Fatal_error : Bitfield<2, 1> {};
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struct Unsupported_request : Bitfield<3, 1> {};
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struct Aux_power : Bitfield<4, 1> {};
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struct Transactions_pending : Bitfield<5, 1> {};
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};
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struct Link_capabilities : Register<0xc, 32>
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{
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struct Max_link_speed : Bitfield<0, 4> {};
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};
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struct Link_control : Register<0x10, 16>
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{
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struct Lbm_irq_enable : Bitfield<10,1> {};
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};
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struct Link_status : Register<0x12, 16>
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{
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struct Lbm_status : Bitfield<10,1> {};
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};
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struct Slot_capabilities : Register<0x14, 32> {};
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struct Slot_control : Register<0x18, 16> {};
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struct Slot_status : Register<0x1a, 16> {};
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struct Root_control : Register<0x1c, 16>
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{
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struct Pme_irq_enable : Bitfield<3,1> {};
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};
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struct Root_status : Register<0x20, 32>
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{
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struct Pme : Bitfield<16,1> {};
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};
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struct Device_capabilities_2 : Register<0x24, 32> {};
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struct Device_control_2 : Register<0x28, 16> {};
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struct Device_status_2 : Register<0x2a, 16> {};
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struct Link_capabilities_2 : Register<0x2c, 32> {};
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struct Link_control_2 : Register<0x30, 16>
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{
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struct Link_speed : Bitfield<0, 4> {};
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};
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struct Link_status_2 : Register<0x32, 16> {};
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struct Slot_capabilities_2 : Register<0x34, 32> {};
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struct Slot_control_2 : Register<0x38, 16> {};
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struct Slot_status_2 : Register<0x3a, 16> {};
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using Pci_capability::Pci_capability;
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void power_management_event_enable()
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{
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write<Root_status::Pme>(1);
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write<Root_control::Pme_irq_enable>(1);
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};
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void clear_dev_errors()
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{
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Device_status::access_t v = read<Device_status>();
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Device_status::Correctable_error::set(v,1);
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Device_status::Non_fatal_error::set(v,1);
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Device_status::Fatal_error::set(v,1);
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Device_status::Unsupported_request::set(v,1);
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Device_status::Aux_power::set(v,1);
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write<Device_status>(v);
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}
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void link_bandwidth_management_enable()
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{
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write<Link_status::Lbm_status>(1);
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write<Link_control::Lbm_irq_enable>(1);
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}
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};
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/*********************************
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** PCI-E extended capabilities **
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*********************************/
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enum { PCI_E_EXTENDED_CAPS_OFFSET = 0x100U };
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struct Pci_express_extended_capability : Genode::Mmio
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{
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struct Id : Register<0,16>
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{
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enum {
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INVALID = 0x0,
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ADVANCED_ERROR_REPORTING = 0x1,
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VIRTUAL_CHANNEL = 0x2,
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DEVICE_SERIAL_NUMBER = 0x3,
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POWER_BUDGETING = 0x4,
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VENDOR = 0xb,
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MULTI_ROOT_IO_VIRT = 0x11,
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};
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};
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struct Next_and_version : Register<16, 8>
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{
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struct Offset : Bitfield<4, 12> {};
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};
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using Genode::Mmio::Mmio;
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};
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struct Advanced_error_reporting_capability : Pci_express_extended_capability
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{
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struct Uncorrectable_error_status : Register<0x4, 32> {};
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struct Correctable_error_status : Register<0x10, 32> {};
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struct Root_error_command : Register<0x2c, 32>
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{
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struct Correctable_error_enable : Bitfield<0,1> {};
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struct Non_fatal_error_enable : Bitfield<1,1> {};
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struct Fatal_error_enable : Bitfield<2,1> {};
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};
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struct Root_error_status : Register<0x30, 32> {};
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using Pci_express_extended_capability::Pci_express_extended_capability;
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void enable()
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{
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Root_error_command::access_t v = 0;
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Root_error_command::Correctable_error_enable::set(v,1);
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Root_error_command::Non_fatal_error_enable::set(v,1);
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Root_error_command::Fatal_error_enable::set(v,1);
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write<Root_error_command>(v);
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};
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void clear()
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{
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write<Root_error_status>(read<Root_error_status>());
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write<Correctable_error_status>(read<Correctable_error_status>());
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write<Uncorrectable_error_status>(read<Uncorrectable_error_status>());
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};
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};
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Genode::Constructible<Power_management_capability> power_cap {};
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Genode::Constructible<Msi_capability> msi_cap {};
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Genode::Constructible<Msi_x_capability> msi_x_cap {};
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Genode::Constructible<Pci_express_capability> pci_e_cap {};
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Genode::Constructible<Advanced_error_reporting_capability> adv_err_cap {};
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void clear_errors() {
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if (adv_err_cap.constructed()) adv_err_cap->clear(); }
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void scan()
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{
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using namespace Genode;
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if (!read<Status::Capabilities>())
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return;
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uint16_t off = read<Capability_pointer>();
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while (off) {
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Pci_capability cap(base() + off);
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switch(cap.read<Pci_capability::Id>()) {
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case Pci_capability::Id::POWER_MANAGEMENT:
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power_cap.construct(base()+off); break;
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case Pci_capability::Id::MSI:
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msi_cap.construct(base()+off); break;
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case Pci_capability::Id::MSI_X:
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msi_x_cap.construct(base()+off); break;
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case Pci_capability::Id::PCI_E:
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pci_e_cap.construct(base()+off); break;
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case Pci_capability::Id::AGP:
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case Pci_capability::Id::VITAL_PRODUCT:
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case Pci_capability::Id::SATA:
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case Pci_capability::Id::VENDOR:
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case Pci_capability::Id::ADVANCED:
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case Pci_capability::Id::BRIDGE_SUB:
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case Pci_capability::Id::DEBUG:
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break;
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default:
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warning("Found unhandled capability ",
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cap.read<Pci_capability::Id>(),
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" at offset ", Hex(base()+off));
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}
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off = cap.read<Pci_capability::Pointer>();
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}
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if (!pci_e_cap.constructed())
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return;
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off = PCI_E_EXTENDED_CAPS_OFFSET;
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while (off) {
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Pci_express_extended_capability cap(base() + off);
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switch (cap.read<Pci_express_extended_capability::Id>()) {
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case Pci_express_extended_capability::Id::INVALID:
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return;
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case Pci_express_extended_capability::Id::ADVANCED_ERROR_REPORTING:
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adv_err_cap.construct(base() + off); break;
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case Pci_express_extended_capability::Id::VENDOR:
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case Pci_express_extended_capability::Id::VIRTUAL_CHANNEL:
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case Pci_express_extended_capability::Id::MULTI_ROOT_IO_VIRT:
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break;
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default:
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warning("Found unhandled extended capability ",
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cap.read<Pci_express_extended_capability::Id>(),
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" at offset ", Hex(base()+off));
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}
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off = cap.read<Pci_express_extended_capability::Next_and_version::Offset>();
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}
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}
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using Genode::Mmio::Mmio;
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bool valid() {
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return read<Vendor>() != Vendor::INVALID; }
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bool bridge()
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{
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return read<Header_type::Type>() == 1 ||
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read<Base_class_code>() == Base_class_code::BRIDGE;
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}
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template <typename MEM_FN, typename IO_FN>
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void for_each_bar(MEM_FN const & memory, IO_FN const & io)
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{
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Genode::addr_t const reg_addr = base() + BASE_ADDRESS_0;
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Genode::size_t const reg_cnt =
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(read<Header_type::Type>()) ? BASE_ADDRESS_COUNT_TYPE_1
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: BASE_ADDRESS_COUNT_TYPE_0;
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for (unsigned i = 0; i < reg_cnt; i++) {
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Base_address reg0(reg_addr + i*0x4);
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if (!reg0.valid())
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continue;
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if (reg0.memory()) {
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if (reg0.bit64()) i++;
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memory(reg0.addr(), reg0.size());
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} else
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io(reg0.addr(), reg0.size());
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}
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};
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};
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struct Pci::Config_type0 : Pci::Config
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{
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struct Expansion_rom_base_addr : Register<0x30, 32> {};
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using Pci::Config::Config;
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};
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struct Pci::Config_type1 : Pci::Config
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{
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struct Sec_lat_timer_bus : Register<0x18, 32>
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{
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struct Primary_bus : Bitfield<0, 8> {};
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struct Secondary_bus : Bitfield<8, 8> {};
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struct Sub_bus : Bitfield<16, 8> {};
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};
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struct Io_base_limit : Register<0x1c, 16> {};
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struct Memory_base_limit : Register<0x20, 32> {};
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struct Prefetchable_memory_base : Register<0x24, 32> {};
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struct Prefetchable_memory_base_upper : Register<0x28, 32> {};
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struct Prefetchable_memory_limit_upper : Register<0x2c, 32> {};
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struct Io_base_limit_upper : Register<0x30, 32> {};
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struct Expansion_rom_base_addr : Register<0x38, 32> {};
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struct Bridge_control : Register<0x3e, 16>
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{
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struct Serror : Bitfield<1, 1> {};
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};
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using Pci::Config::Config;
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bus_t primary_bus_number() {
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return (bus_t) read<Sec_lat_timer_bus::Primary_bus>(); }
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bus_t secondary_bus_number() {
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return (bus_t) read<Sec_lat_timer_bus::Secondary_bus>(); }
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bus_t subordinate_bus_number() {
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return (bus_t) read<Sec_lat_timer_bus::Sub_bus>(); }
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};
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#endif /* __INCLUDE__PCI__CONFIG_H__ */
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