Add display function for cxl1.1 device link status information. (#183)

* Add display function for cxl1.1 device link status information.

* Modifications according to comments. Adding a descriptio

Add display function for cxl1.1 device link status information. (#183)

* Add display function for cxl1.1 device link status information.

* Modifications according to comments. Adding a description, Fix odd indent, and remove unnecessary statement.

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sysfs: Include <libgen.h> for basename()

Otherwise, it fails to build with musl libc.

Use C99 named initializers for struct pci_methods

sysfs: Avoid close() potentially clobbering errno

Get rid of workarounds for Linux systems without pread/pwrite

Many things have changed since we introduced work-arounds for Linux
systems with missing pread/pwrite in 1999 (if you are curious, it wa

Get rid of workarounds for Linux systems without pread/pwrite

Many things have changed since we introduced work-arounds for Linux
systems with missing pread/pwrite in 1999 (if you are curious, it was
in commit bc6346df8d89ece4814be7dff951ec1a7d259938).

I believe that it is supported by all reasonably recent Linux systems
now. After all, pread() was already defined by POSIX.1-2001.

This should also fix problems with musl libc mentioned in GitHub
issue #158.

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Fix memory leak when fill flags has PCI_FILL_PARENT.

Fix compile warnings about unused variables

sysfs.c: In function 'sysfs_read_vpd':
sysfs.c:569:43: warning: unused parameter 'd' [-Wunused-parameter]
static int sysfs_read_vpd(struct pci_dev *d, in

Fix compile warnings about unused variables

sysfs.c: In function 'sysfs_read_vpd':
sysfs.c:569:43: warning: unused parameter 'd' [-Wunused-parameter]
static int sysfs_read_vpd(struct pci_dev *d, int pos, byte *buf, int len)
^
sysfs.c:569:50: warning: unused parameter 'pos' [-Wunused-parameter]
static int sysfs_read_vpd(struct pci_dev *d, int pos, byte *buf, int len)
^~~
sysfs.c:569:61: warning: unused parameter 'buf' [-Wunused-parameter]
static int sysfs_read_vpd(struct pci_dev *d, int pos, byte *buf, int len)
^~~
sysfs.c:569:70: warning: unused parameter 'len' [-Wunused-parameter]
static int sysfs_read_vpd(struct pci_dev *d, int pos, byte *buf, int len)
^~~

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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: sysfs: Implement support for PCI_FILL_DRIVER

In sysfs is driver name stored as symlink path of "driver" node.

libpci: sysfs: Implement support for PCI_FILL_PARENT

libpci: sysfs: Implement CLASS_EXT and SUBSYS support

In sysfs there are optional nodes with this information.

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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sysfs: Adjusted handling of PCI_FILL_IOMMU_GROUP to recent flag semantics

lspci: Print IOMMU groups with -v

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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Sysfs: fixed sysfs_deref_link()

The function canonicalize_file_name() is GLIBC-specific, use realpath()
instead, which is available also on MUSL libc.

Also, it leaked memory.

Convert other string properties to the generic mechanism

This removes the need of explicit memory management and fixes
PCI_FILL_RESCAN.

To keep backward compatibility, I am keeping the raw pointers

Convert other string properties to the generic mechanism

This removes the need of explicit memory management and fixes
PCI_FILL_RESCAN.

To keep backward compatibility, I am keeping the raw pointers
in struct pci_dev, but they point inside the pci_property instead
of separately allocated memory.

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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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Add device-tree node path to the verbose output

Adds the path of the device-tree node of a PCI device to the lspci -v
output, like so:

0021:00:00.0 PCI bridge: IBM Device 03dc (prog-if 00 [Normal d

Add device-tree node path to the verbose output

Adds the path of the device-tree node of a PCI device to the lspci -v
output, like so:

0021:00:00.0 PCI bridge: IBM Device 03dc (prog-if 00 [Normal decode])
DT Node: /sys/firmware/devicetree/base/pciex@3fffe41100000/pci@0

This is added as a generic property to struct pci_device and populated
by the sysfs backend. Other platforms may find it useful though.

Signed-off-by: Oliver O'Halloran <[email protected]>

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Domains: Legacy 16-bit domain numbers are maintained in generic code

Previously, backward compatibility was kept only with the sysfs
back-end.

Also, domains which do not fit in 16 bits are replaced

Domains: Legacy 16-bit domain numbers are maintained in generic code

Previously, backward compatibility was kept only with the sysfs
back-end.

Also, domains which do not fit in 16 bits are replaced by 0xffff.

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pciutils: Add support for 32-bit PCI domains

This adds support for new host bridges that may create PCI domain number
values requiring more than 16 bits. The new domain 32-bit integer is
signed to a

pciutils: Add support for 32-bit PCI domains

This adds support for new host bridges that may create PCI domain number
values requiring more than 16 bits. The new domain 32-bit integer is
signed to allow -1 for "any", and is sufficient as the domain number
will never require the full 32-bits.

The domain field is appended at the end of struct pci_dev, and the
current location of the 16-bit domain remains for compatibility. The
domain number is truncated and copied into the legacy domain location
so existing applications linking to the library will continue to work
without modification. We accept that these applications may not work
correctly on machines with host bridges exporting 32-bit domains.

In order to force new programs to link to the new ABI, the pci_init
function call is versioned in this commit.

Signed-off-by: Keith Busch <[email protected]>

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Add support for enhanced allocation regions

Append [enhanced] to Regions that contain the BEI flag in sysfs.
To do this, we need to add the resource flags to the pci_dev struct.
This struct is passe

Add support for enhanced allocation regions

Append [enhanced] to Regions that contain the BEI flag in sysfs.
To do this, we need to add the resource flags to the pci_dev struct.
This struct is passed through the libpci API, so we increment the API version number.

Don't truncate least significant bits of the region size.
ex: a 2000 byte region should display [size=2000] instead of [size=1K]

Signed-off-by: Sean O. Stalley <[email protected]>

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Sysfs: Read failures of optional attributes are not fatal

Ameya Palande reported that with some kernels, reads of such
attributes fail on some hardware. He suggested to ignore read
failures complete

Sysfs: Read failures of optional attributes are not fatal

Ameya Palande reported that with some kernels, reads of such
attributes fail on some hardware. He suggested to ignore read
failures completely, but I decided to turn the errors into
warnings in such cases. At least, the user will know that something
fishy is going on.

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Oops, numa_node should not be a mandatory attribute