Kernel Msi Support

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Linux Kernel support for a new MSI notebook

    https://forum-en.msi.com/index.php?topic=323638.0
    Nov 27, 2019 · Linux Kernel support for a new MSI notebook

Linux Kernel Documentation :: MSI-HOWTO.txt

    https://www.mjmwired.net/kernel/Documentation/MSI-HOWTO.txt
    348 349 5.5.1 Required x86 hardware support 350 351 Since the target of MSI address is the local APIC CPU, enabling 352 MSI/MSI-X support in the Linux kernel is dependent on whether existing 353 system hardware supports local APIC.

4. The MSI Driver Guide HOWTO — The Linux Kernel documentation

    https://www.kernel.org/doc/html/latest/PCI/msi-howto.html
    4.4.1. Include kernel support for MSIs¶ To support MSI or MSI-X, the kernel must be built with the CONFIG_PCI_MSI option enabled. This option is only available on some architectures, and it may depend on some other options also being set. For example, on x86, you must also enable X86_UP_APIC or SMP in order to see the CONFIG_PCI_MSI option.

Enabling Message-Signaled Interrupts in the Registry ...

    https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/enabling-message-signaled-interrupts-in-the-registry
    Enabling Message-Signaled Interrupts in the Registry. 06/16/2017; 2 minutes to read; In this article. To receive message-signaled interrupts (MSIs), a driver's INF file must enable MSIs in the registry during installation. ... Set MSISupported to 1 to enable MSI support.

[6/9] PCI/MSI: Enable PCI_MSI_IRQ_DOMAIN support for MIPS ...

    https://lore.kernel.org/patchwork/patch/840188/
    Oct 11, 2017 · Toggle navigation Patchwork Linux Kernel Mailing List Patches Bundles About this project Login; Register; Mail settings [6/9] PCI/MSI: Enable PCI_MSI_IRQ_DOMAIN support for MIPS 840188 diff mbox series. Message ID: [email protected] : State: New, archived ... X86 depends on PCI_MSI select GENERIC_MSI_IRQ ...

[v4] PCI: kirin: Add MSI support - Patchwork

    https://patchwork.kernel.org/patch/10402399/
    [v4] PCI: kirin: Add MSI support 10402399 diff mbox. Message ID: [email protected]: State: ... If msi_irq is set, the dwc driver will handle the MSI and you must not request the IRQ in the platform driver, see above for the link to Gustavo's work.

PCI Support Library — The Linux Kernel documentation

    https://www.kernel.org/doc/html/latest/driver-api/pci/pci.html
    PCI Support Library¶ unsigned char pci_bus_max_busnr (struct pci_bus * bus) ¶ returns maximum PCI bus number of given bus’ children. Parameters. struct pci_bus * bus pointer to PCI bus structure to search. Description. Given a PCI bus, returns the highest PCI bus number present in the set including the given PCI bus and its list of child ...

Message Signaled Interrupts - Wikipedia

    https://en.wikipedia.org/wiki/Message_Signaled_Interrupts
    Message Signaled Interrupts (MSI) are an alternative in-band method of signaling an interrupt, using special in-band messages to replace traditional out-of-band assertion of dedicated interrupt lines. While more complex to implement in a device, message signaled interrupts have some significant advantages over pin-based out-of-band interrupt signaling.

Introduction to Message-Signaled Interrupts - Windows ...

    https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/introduction-to-message-signaled-interrupts
    Windows Vista and later versions of Windows support MSI and MSI-X. A single device can support both MSI and MSI-X. For such a device, the operating system will automatically use MSI-X. An interrupt message is a particular value that a device writes to a particular address to trigger an interrupt. Unlike line-based interrupts, message-signaled ...



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