Port to RT-Thread Smart DM PCI

Signed-off-by: GuEe-GUI <[email protected]>

ABI version bump for pci_fill_info()

We have new flags and new fields in struct pci_dev.

libpci: Define STATIC_ALIAS for DLL Windows builds

Windows builds for versioned symbols use inline asm .set directive which in
some cases makes x86-64 LTO compiler to drop the referenced value. Defi

libpci: Define STATIC_ALIAS for DLL Windows builds

Windows builds for versioned symbols use inline asm .set directive which in
some cases makes x86-64 LTO compiler to drop the referenced value. Define
STATIC_ALIAS macro with VERSIONED_ABI (used) attribute which forces LTO
compiler to not drop the symbol from the final DLL library.

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Library: pci_define_param() returns a pointer to the parameter

This will allow overriding pci_param->malloced.

MacOS: An attempt to appease compiler picky about attribute placement

New back-end for AmigaOS on PowerPC

Update license comments and added SPDX license identifiers

Previously, the only information about the specific version of GPL
was present in the README and individual source files mentioned only
GPL

Update license comments and added SPDX license identifiers

Previously, the only information about the specific version of GPL
was present in the README and individual source files mentioned only
GPL alone.

Let us update all copyright comments to explicitly say "GPL v2+"
and also include the machine readable SPDX license identifier.

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libpci: Add PCIe ECAM access method

This is a new direct hardware access method via PCIe ECAM (Enhanced
Configuration Access Mechanism). It is available on all PCIe-compliant
hardware. Requires root

libpci: Add PCIe ECAM access method

This is a new direct hardware access method via PCIe ECAM (Enhanced
Configuration Access Mechanism). It is available on all PCIe-compliant
hardware. Requires root privileges and access to physical memory.

ECAM mapping can be specified manually via a new ecam.addrs parameter or
can be read from ACPI MCFG table. ACPI MCFG table can be located in the
system or read from x86 BIOS memory.

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win32-cfgmgr32: Clean up initialization

libpci: win32-cfgmgr32: Add support for accessing config space via other backend

Extend win32-cfgmgr32 backend and add a new option win32.cfgmethod for
specifying other backend for accessing PCI con

libpci: win32-cfgmgr32: Add support for accessing config space via other backend

Extend win32-cfgmgr32 backend and add a new option win32.cfgmethod for
specifying other backend for accessing PCI config space. There are more
config space access methods available on Windows and each is working only
sometimes (either requires special privileges or special setup).

So by default try to choose the first working one via order defined in pci
probe_sequence[] array. If none is available then emulate PCI config space
like before this change.

Function pci_init_v35() is extended and renamed to pci_init_internal() to
optionally do not throw errors and allow to specify one access method which
will be skipped in AUTO mode. This is used to prevent choosing win32-cfgmgr32
as config space access method for win32-cfgmgr32.

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Fix versioned symbol aliases when used with link-time optimization

libpci: mmio-ports: Add Extended PCIe Intel Type 1 access method

Extended method allows to access all PCIe registers, including extended
registers starting at 0x100 offset. This method uses 4 reserv

libpci: mmio-ports: Add Extended PCIe Intel Type 1 access method

Extended method allows to access all PCIe registers, including extended
registers starting at 0x100 offset. This method uses 4 reserved buts above
bus bits for PCIe registers. On ARM platforms it is very common for PCIe
controllers. Like standard method, it needs to be properly configured.

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libpci: Add new windows kldbgdrv.sys implementation

Microsoft Kernel Local Debugging Driver (kldbgdrv.sys) allow access for
userspace processes to the PCI config space. It supports access up to
6553

libpci: Add new windows kldbgdrv.sys implementation

Microsoft Kernel Local Debugging Driver (kldbgdrv.sys) allow access for
userspace processes to the PCI config space. It supports access up to
65536 domains and whole 4096 bytes long extended PCIe config space. Driver
is signed by Microsoft and is available for both 32-bit and 64-bit systems.

Driver is not part of Windows system and has to be installed via WinDbg
installation package. Standalone installers for WinDbg 6.12.2.633 version:
https://download.microsoft.com/download/A/6/A/A6AC035D-DA3F-4F0C-ADA4-37C8E5D34E3D/setup/WinSDKDebuggingTools_amd64/dbg_amd64.msi
https://download.microsoft.com/download/A/6/A/A6AC035D-DA3F-4F0C-ADA4-37C8E5D34E3D/setup/WinSDKDebuggingTools/dbg_x86.msi

This kldbgdrv.sys API is used by the !pci command of new WinDbg kernel
debugger for displaying PCI config space.

API of this driver is available only for processes with Debug privilege and
only if system was booted with Debugging option.

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libpci: Add Intel Type 1 implementation for memory mapped systems

Lot of non-x86 platforms also support Intel Type 1 mechanism. x86 IO ports
CF8 and CFC are on these platforms mapped into standard m

libpci: Add Intel Type 1 implementation for memory mapped systems

Lot of non-x86 platforms also support Intel Type 1 mechanism. x86 IO ports
CF8 and CFC are on these platforms mapped into standard memory space.
Address mapping itself is platform or board specific and there is no
default value.

Lot of ARM boards with multiple PCIe controllers are multi-domain and each
PCI domain has its own CF8/CFC (address/data) registers mapped into memory
space.

Add new mmio-conf1 backend which access CF8/CFC ports via MMIO and define
new config option mmio-conf1.addrs which specify list of address/data
register pairs in memory space for each PCI domain. Format of this option
is: 0xaddr1/0xdata1,0xaddr2/0xdata2,...

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libpci: Add new internal function pci_generic_scan_domain()

Function pci_generic_scan() scans PCI domain 0. This new function
pci_generic_scan_domain() scans specified PCI domain number.

libpci: Add support for building versioned shared Windows DLL library libpci3.dll

PE/COFF format, used by DLL libraries, does not support version symbols
like ELF format. Recommendation from Microso

libpci: Add support for building versioned shared Windows DLL library libpci3.dll

PE/COFF format, used by DLL libraries, does not support version symbols
like ELF format. Recommendation from Microsoft for DLL symbol versioning is
to use DLL API sets. But DLL API sets scheme requires for every API change
to generated a new slim forwarding DLL library, which is unsuitable for
distribution which wants just one DLL library with all version symbols.

So instead of Microsoft recommended scheme for DLL versioning, use new
different versioning scheme: Symbol is composed by function name, at (@)
character and version string (version is same as for ELF targets). Symbol
name without version information is added only into the DLL DEF file as
alias to symbol with higest version. So linker at application link time
resolves "unversioned" symbol to the versioned one via this alias and puts
"versioned" symbol into final executable. This works fine if GNU LD is
linking application via import library libpci3.dll.a generated from that
DLL DEF file libpci3.def. But does not work when linking directly to the
DLL library because library itself does not contain aliases. Note that GNU
LD does not support linking to DEF file (it is required to first generated
import library from DEF file).

Note that older GNU LD versions have bug which cause generation of
corrupted DLL files if some symbol contains dot (.) character. Hopefully
this bug was fixed in GNU LD 2.21.

At the end application lspci.exe requires library libpci3.dll with symbols
pci_alloc@LIBPCI_3.0, pci_init@LIBPCI_3.5, pci_fill_info@LIBPCI_3.8 and
therefore libpci3.dll stays backward compatible with future changes.

PE/COFF executables can reference symbols either via name or via its
ordinal number. Because DLL DEF files are generated from libpci version
script and generator ver2def.pl preserves order of symbols, it means that
ordinal numbers stay backward compatible unless order of lines in version
script is changed.

WARNINGS:

GCC an GNU LD for Windows target have some bugs which cause that
-fvisibility=hidden switch and __attribute__((visibility("default"))) does
not work. Seems that they are broken and ignored when building DLL library.
So instead use -Wl,--exclude-all-symbols switch with explicit DLL DEF file
for building DLL library, which seems to work. This switch is supported
since GNU LD 2.21.

GNU LD has also another bug which results in broken DLL library if input
DLL DEF file which describes symbols for exports, contains also symbol
aliases via == operator.

So do not specify symbol aliases in input DLL DEF file for building DLL
library. Instead construct separate DLL DEF file for building libpci3.dll
without symbol aliases and separate DLL DEF file libpci3.def with symbol
aliases for building import library libpci3.dll.a suitable for linking into
target applications. Note that operator == for symbol aliases is supported
since GNU dlltool 2.21.

Generate those two DLL DEF files via new script ver2def.pl from libpci.ver
version script. So exported functions and version symbols would be defined
only at one place in file libpci.ver.

Note that GNU LD for Windows targets has also broken support for version
scripts, it exports nonsense data and completely ignores version
information. So always use only DLL DEF files generated by ver2def.pl
script and never pass original version script to GNU LD.

Due to another bugs in GNU dlltool, ordinals for aliased symbols from DLL
DEF file are calculated incorrectly when building import library. So
calculate ordinals manually in ver2def.pl script and explicitly put then
into generated libpci3.def DLL DEF file for every symbol, including
aliases.

And because aliases are stored only in libpci3.def file (and in import
library libpci3.dll.a generated from that DEF file) and not in DLL library
libpci3.dll itself, it is required to link all libpci applications via
import library and not directly to libpci3.dll. This is limitation of
PE/COFF format used by DLL libraries.

So for building Windows DLL library libpci3.dll is needed to use GNU
binutils 2.21 or new.

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libpci: Add new windows NT sysdbg implementation

NT SysDbg interface allow access to the PCI config space. Only devices on
the first domain are available and only first 256 bytes of the PCI config
s

libpci: Add new windows NT sysdbg implementation

NT SysDbg interface allow access to the PCI config space. Only devices on
the first domain are available and only first 256 bytes of the PCI config
space can be accessed. Compared to intel-conf1 access, this API is race
free as NT kernel serialize access to PCI I/O ports. This NT SysDbg API is
used by the !pci command of 32-bit WinDbg kernel debugger for displaying
PCI config space. Debug privilege is required to use this NT interface.

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libpci: Add windows cfgmgr32 implementation

Access via cfgmgr32.dll library allows to list PCI devices and retrieve
their basic properties and system resource configuration. Access is
available to a

libpci: Add windows cfgmgr32 implementation

Access via cfgmgr32.dll library allows to list PCI devices and retrieve
their basic properties and system resource configuration. Access is
available to all users and should not require special privileges, access
tokens, rights or permissions.

This cfgmgr32.dll library does not provide access to PCI config space.

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libpci: Implement virtual config space for provides without access to config space

Add a new pci_dev member no_config_access which signals that there is no
access to config space for particular devi

libpci: Implement virtual config space for provides without access to config space

Add a new pci_dev member no_config_access which signals that there is no
access to config space for particular device. Reading operation in this
case should return data from emulated virtual config space. For provides
there is a new helper function pci_generic_read() which emulates config
spaces based on struct pci_dev members.

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libpci: Add support for filling bridge resources

Extend libpci API and ABI to fill bridge resources from sysfs.

Simplified pci_fill_info() and friends

Previously, we kept track of which fields were already filled, which
was quite brittle.

Now we keep only the set of already known fields in struct pci_dev.
We

Simplified pci_fill_info() and friends

Previously, we kept track of which fields were already filled, which
was quite brittle.

Now we keep only the set of already known fields in struct pci_dev.
We check if the current field is needed against this information.

Not only this simplifies the whole thing, but it also enables future
back-ends to call pci_fill_info() recursively as needed.

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Library: Big cleanup of pci_fill_info()

There was a lot of minor issues in the implementation of the fill_info
call-back in various back-ends. Most importantly, semantics of pci_dev->
known_fields w

Library: Big cleanup of pci_fill_info()

There was a lot of minor issues in the implementation of the fill_info
call-back in various back-ends. Most importantly, semantics of pci_dev->
known_fields was not formally defined and it was implemented inconsistently.

We now define known_fields as the set of fields which were already
obtained during the lifetime of the pci_dev. We never consider known
fields which are not supported by the back-end. All fields which are
unsupported by either the back-end, the OS, or the particular device,
are guaranteed to have sensible default values (0 or NULL). Also, bit
masks are always unsigned except for the signature of pci_fill_info()
which should be preferably kept stable.

All back-ends and the pci_generic_fill_info() function have been changed
to follow this semantics.

In the sysfs back-end, we read as few attributes as possible during
device initialization, so applications which use pci_get_dev() are not
slowed down unnecessarily.

In the Hurd back-end, we also respect the buscentric mode.

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New access method: Hurd via RPCs

A new module for the Hurd that accesses PCI bus using available RPCs.

Created a generic interface for device properties

Introduction of device tree node properties broke library ABI.

I gave up on creating new symbol versions whenever we add a new
device property, so

Created a generic interface for device properties

Introduction of device tree node properties broke library ABI.

I gave up on creating new symbol versions whenever we add a new
device property, so I introduced a generic property interface
with which new string properties can be added while keeping ABI
compatibility.

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Sylixos port

Contributed by YuJian Gong.