Linux Kernel PCI Developer

3 days ago

Hyderabad, Telangana, India beBeeSpecialist Full time ₹ 1,80,00,000 - ₹ 2,40,00,000
Linux PCI Device Expert

The ideal candidate will be responsible for driving the design, development, and maintenance of PCI and PCIe subsystems and drivers in the Linux kernel.

  • Develop and implement cutting-edge solutions for seamless enumeration, configuration, power management, and hotplug support for PCI enablement and bring-up.
  • Lead platform bring-up activities involving PCI/PCIe devices such as network, storage, GPU, NVMe.
  • Validate and debug device-tree or ACPI configurations for PCI host bridges and firmware interaction.
  • Collaborate with firmware/bootloader teams for correct BAR, MSI/MSI-X, and IOMMU configurations.
  • Work closely with architecture teams to support secure boot and DMA protection for PCI devices.
  • Analyze PCI bandwidth, latency, and power bottlenecks.
  • Implement ASPM, LTR, and other low-power states in compliance with PCIe specifications.
  • Use Linux tools (lspci, setpci, tracepoints, ftrace, perf, etc.) and oscilloscopes/analyzers for low-level debugging.
  • Root-cause platform PCI failures and compatibility issues across hardware and kernel versions.
  • Contribute patches upstream to the Linux kernel PCI subsystem.
  • Ensure compliance with PCI-SIG and Linux kernel community best practices.
Requirements and Expectations
  • Deep understanding of Linux kernel internals, especially drivers/pci and subsystems like hotplug, MSI, IOMMU, DMA API.
  • Hands-on experience with PCIe Gen3/Gen4/Gen5 devices and related PHY bring-up issues.
  • Familiarity with ARM64 and x86 architectures, DT/ACPI handling for PCI devices.
  • Proficient in C programming, Linux kernel debugging (GDB, crash dumps), and tools like dmesg, lspci, pcie_check.
  • Expertise in power management (runtime, suspend/resume flows) for PCI devices.
  • Experience with Secure Boot, TrustZone, and virtualization passthrough (VFIO/SR-IOV) for PCIe devices is a strong plus.
  • Experience using Yocto, Buildroot, or other embedded Linux build systems.

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