kernel/linux.git/drivers/pci/hotplug/Kconfig, branch v6.19.11

PCI: Fix typos

2025-03-08T21:08:45+00:00

Fix typos and whitespace errors. Link: https://lore.kernel.org/r/20250307231715.438518-1-helgaas@kernel.org Signed-off-by: Bjorn Helgaas

PCI: hotplug: Add OCTEON PCI hotplug controller driver

2024-11-13T23:51:39+00:00

Add a PCI hotplug controller driver for the OCTEON PCIe device. The OCTEON PCIe device is a multi-function device where function 0 serves as the PCI hotplug controller. There is an out-of-band management console interface to firmware running on function 0 whereby an administrator can disable functions to save power or enable them with one of several personalities (virtio-net, virtio-crypto, NVMe, etc) for the other functions. Function 0 initiates hotplug events handled by this driver when the other functions are enabled or disabled. +--------------------------------+ | Root Port | +--------------------------------+ | PCIe | +---------------------------------------------------------------+ | OCTEON PCIe Multifunction Device | +---------------------------------------------------------------+ | | | | | | | | +---------------------+ +----------------+ +-----+ +----------------+ | Function 0 | | Function 1 | | ... | | Function 7 | | (Hotplug controller)| | (Hotplug slot) | | | | (Hotplug slot) | +---------------------+ +----------------+ +-----+ +----------------+ | | +-------------------------+ | Controller Firmware | +-------------------------+ The hotplug controller driver enables hotplugging of non-controller functions within the same device. During probing, the driver removes the non-controller functions and registers them as PCI hotplug slots. These slots are added back by the driver, only upon request from the device firmware. The controller uses MSI-X interrupts to notify the host of hotplug events initiated by the OCTEON firmware. Additionally, the driver allows users to enable or disable individual functions via sysfs slot entries, as provided by the PCI hotplug framework. Link: https://lore.kernel.org/r/20241111134523.2796699-1-sthotton@marvell.com Co-developed-by: Vamsi Attunuru Signed-off-by: Vamsi Attunuru Signed-off-by: Shijith Thotton [bhelgaas: use pci_info() when possible] Signed-off-by: Bjorn Helgaas

PCI: hotplug: Add Ampere Altra Attention Indicator extension driver

2023-10-26T11:02:10+00:00

On Ampere Altra, PCIe hotplug is handled through ACPI. A side interface is also present to request system firmware control of the hotplug Attention Indicators. Add an ACPI PCI Hotplug companion driver to support Attention Indicator control. Link: https://lore.kernel.org/r/20230930002036.6491-2-scott@os.amperecomputing.com Signed-off-by: D Scott Phillips [bhelgaas: mask domain to low 4 bits] Signed-off-by: Bjorn Helgaas Acked-by: "Rafael J. Wysocki"

PCI: pciehp: Enable by default if USB4 enabled

2022-11-15T15:25:21+00:00

Thunderbolt/USB4 PCIe tunneling depends on native PCIe hotplug. Enable pciehp by default if USB4 is enabled. [bhelgaas: squash, update subject, commit logs, tidy whitespace] Link: https://lore.kernel.org/r/20221115113857.35800-2-albert.zhou.50@gmail.com Link: https://lore.kernel.org/r/20221115113857.35800-3-albert.zhou.50@gmail.com Signed-off-by: Albert Zhou Signed-off-by: Bjorn Helgaas Reviewed-by: Mika Westerberg

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada

PCI: Fix indentation

2019-11-21T21:06:47+00:00

Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig [bhelgaas: do same in vmd.c] Link: https://lore.kernel.org/r/20191120134036.14502-1-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bjorn Helgaas

PCI/hotplug: remove the sgi_hotplug driver

2019-08-16T18:33:56+00:00

The SGI SN2 support is about to be removed. Remove this driver that depends on the SN2 support. Signed-off-by: Christoph Hellwig Link: https://lkml.kernel.org/r/20190813072514.23299-6-hch@lst.de Signed-off-by: Tony Luck

PCI: shpchp: Convert SHPC to be builtin only

2018-06-02T05:18:28+00:00

We need to be able coordinate between SHPC and acpiphp to determine which driver handles hotplug of a given bridge. Because acpiphp is already bool, convert SHPC to be bool as well. Suggested-by: Bjorn Helgaas Signed-off-by: Mika Westerberg Signed-off-by: Bjorn Helgaas Reviewed-by: Rafael J. Wysocki

PCI: Add SPDX GPL-2.0 when no license was specified

2018-01-26T17:45:16+00:00

b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") added SPDX GPL-2.0 to several PCI files that previously contained no license information. Add SPDX GPL-2.0 to all other PCI files that did not contain any license information and hence were under the default GPL version 2 license of the kernel. Signed-off-by: Bjorn Helgaas Reviewed-by: Greg Kroah-Hartman

PCI/hotplug: PowerPC PowerNV PCI hotplug driver

2016-06-21T05:30:58+00:00

This adds standalone driver to support PCI hotplug for PowerPC PowerNV platform that runs on top of skiboot firmware. The firmware identifies hotpluggable slots and marked their device tree node with proper "ibm,slot-pluggable" and "ibm,reset-by-firmware". The driver scans device tree nodes to create/register PCI hotplug slot accordingly. The PCI slots are organized in fashion of tree, which means one PCI slot might have parent PCI slot and parent PCI slot possibly contains multiple child PCI slots. At the plugging time, the parent PCI slot is populated before its children. The child PCI slots are removed before their parent PCI slot can be removed from the system. If the skiboot firmware doesn't support slot status retrieval, the PCI slot device node shouldn't have property "ibm,reset-by-firmware". In that case, none of valid PCI slots will be detected from device tree. The skiboot firmware doesn't export the capability to access attention LEDs yet and it's something for TBD. Signed-off-by: Gavin Shan Acked-by: Bjorn Helgaas Signed-off-by: Michael Ellerman