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Groups > linux.kernel > #1551019

Need clarity on MSI handling in RC driver

From valmiki <valmikibow@gmail.com>
Newsgroups linux.kernel
Subject Need clarity on MSI handling in RC driver
Date 2017-01-04 18:40 +0100
Message-ID <sVXHB-7LF-75@gated-at.bofh.it> (permalink)
References <sVKhk-7mf-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi All,

I have a doubt, the MSI domains are handled differently in different RC 
drivers.

Some drivers use irq_domain_add_linear alone, and some use 
pci_msi_create_irq_domain also to handle MSI.

In most of the 32-bit architectures only irq_domain_add_linear is used 
and in 64 bit drivers both pci_msi_create_irq_domain and 
irq_domain_add_linear are used.

So is this because of architecture difference between ARM and ARM64 ?

Thanks & Regards,
valmiki

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Thread

Need clarity on PCIe MSI interrupt in device tree valmiki <valmikibow@gmail.com> - 2017-01-04 04:20 +0100
  Re: Need clarity on PCIe MSI interrupt in device tree Marc Zyngier <marc.zyngier@arm.com> - 2017-01-04 09:30 +0100
    Re: Need clarity on PCIe MSI interrupt in device tree valmiki <valmikibow@gmail.com> - 2017-01-04 18:30 +0100
  Re: Need clarity on PCIe MSI interrupt in device tree Mark Rutland <mark.rutland@arm.com> - 2017-01-04 11:10 +0100
    Re: Need clarity on PCIe MSI interrupt in device tree valmiki <valmikibow@gmail.com> - 2017-01-04 18:40 +0100
  Need clarity on MSI handling in RC driver valmiki <valmikibow@gmail.com> - 2017-01-04 18:40 +0100
    Re: Need clarity on MSI handling in RC driver Marc Zyngier <marc.zyngier@arm.com> - 2017-01-04 18:50 +0100
      Re: Need clarity on MSI handling in RC driver valmiki <valmikibow@gmail.com> - 2017-01-06 03:40 +0100

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