The fwnode_handle pointer passed into pci_register_io_range() is not
modified, so annotate it as const.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Link: https://patch.msgid.link/7ae7866ab8b897253703ecee44c688b6832d49a3.1745552799.git.xiaopei01@kylinos.cn
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Replace strcpy() with strscpy() in the ACPI pci_root driver.

strcpy() has been deprecated because it is generally unsafe, so it
is better to eliminate it from the kernel source.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Muhammad Qasim Abdul Majeed <qasim.majeed20@gmail.com>
Link: https://patch.msgid.link/20240915183822.34588-5-qasim.majeed20@gmail.com
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

- Remove unused struct 'acpi_handle_node' (Dr. David Alan Gilbert)

- Use array notation for portdrv .id_table consistently (Masahiro Yamada)

- Switch to new Intel CPU model defines (Tony Luck)

- Add missing MODULE_DESCRIPTION() macros (Jeff Johnson)

* pci/misc:
  PCI: controller: Add missing MODULE_DESCRIPTION() macros
  PCI: Add missing MODULE_DESCRIPTION() macros
  PCI/PM: Switch to new Intel CPU model defines
  PCI: Use array for .id_table consistently
  ACPI: PCI: Remove unused struct 'acpi_handle_node'

'acpi_handle_node' is unused since 63f534b8bad9 ("ACPI: PCI: Rework
acpi_get_pci_dev()"). Remove it.

Link: https://lore.kernel.org/r/20240509000858.204114-1-linux@treblig.org
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Move the PRESERVE_BOOT_CONFIG _DSM evaluation from acpi_pci_root_create()
to pci_register_host_bridge().

This will help unify the ACPI _DSM path and the DT-based
"linux,pci-probe-only" paths.

This should be safe because it happens earlier than it used to:

    acpi_pci_root_create
      pci_create_root_bus
        pci_register_host_bridge
  +       bridge->preserve_config = pci_preserve_config(bridge)
            pci_acpi_preserve_config
  +           acpi_evaluate_dsm_typed(DSM_PCI_PRESERVE_BOOT_CONFIG)
  -   acpi_evaluate_dsm_typed(DSM_PCI_PRESERVE_BOOT_CONFIG)

No functional change intended.

Link: https://lore.kernel.org/r/20240508174138.3630283-2-vidyas@nvidia.com
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

The acpi_evaluate_dsm_typed() provides a way to check the type of the
object evaluated by _DSM call. Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

CXL _OSC Error Reporting Control is used by the OS to determine if
Firmware has control of various CXL error reporting capabilities
including the event logs.

Expose the result of negotiating CXL Error Reporting Control in struct
pci_host_bridge for consumption by the CXL drivers.

Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: linux-pci@vger.kernel.org
Cc: linux-acpi@vger.kernel.org
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://lore.kernel.org/r/20221212070627.1372402-2-ira.weiny@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

ACPI uses the CXL _OSC support method to communicate the available CXL
functionality to FW. The CXL _OSC support method includes a field to
indicate the OS is capable of RCD mode. FW can potentially change it's
operation depending on the _OSC support method reported by the OS.

The ACPI driver currently only sets the ACPI _OSC support method to
indicate CXL VH mode. Change the capability reported to also include
CXL RCD mode.

[1] CXL3.0 Table 9-26 'Interpretation of CXL _OSC Support Field'

Signed-off-by: Terry Bowman <terry.bowman@amd.com>
[rrichter@amd.com: Reworded patch description.]
Signed-off-by: Robert Richter <rrichter@amd.com>
Link: http://lore.kernel.org/r/Y4cRV/Sj0epVW7bE@rric.localdomain
Link: https://lore.kernel.org/r/166993046717.1882361.10587956243041624761.stgit@dwillia2-xfh.jf.intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Commit 63f534b8bad9 ("ACPI: PCI: Rework acpi_get_pci_dev()") failed
to reference count the device returned by acpi_get_pci_dev() as
expected by its callers which in some cases may cause device objects
to be dropped prematurely.

Add the missing get_device() to acpi_get_pci_dev().

Fixes: 63f534b8bad9 ("ACPI: PCI: Rework acpi_get_pci_dev()")
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

The PCI device returned by acpi_get_pci_dev() needs to be registered,
so if it corresponds to an ACPI device object, the struct acpi_device
representing that object must be registered too and, moreover, it
should be the ACPI companion of the given PCI device.  Thus it should
be sufficient to look for it in the ACPI device object's list of
physical nodes associated with it.

Modify the code accordingly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>