PCI device lead Engineer

2 days ago

Hyderabad, Telangana, India TestCore IT Solutions Pvt. Ltd. Full time ₹ 20,00,000 - ₹ 25,00,000 per year

Job Title: Linux PCI Device Lead

Experience: 8 to 10+ years

Key Responsibilities:

  • · Architect and Lead PCI Subsystem Development:
  • · Drive design, development, and maintenance of PCI and PCIe subsystems and drivers in the Linux kernel.
  • · Ensure seamless enumeration, configuration, power management, and hotplug support for PCI devices.
  • · Device Enablement and Bring-up:
  • · Lead platform bring-up activities involving PCI/PCIe devices (e.g., network, storage, GPU, NVMe).
  • · Validate and debug device-tree or ACPI configurations for PCI host bridges and endpoints.
  • · Kernel 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.
  • · Performance and Power Optimisation:
  • · Analyse PCI bandwidth, latency, and power bottlenecks.
  • · Implement ASPM, LTR, and other low-power states in compliance with PCIe specs.
  • · Debugging and Issue Resolution:
  • · 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.
  • · Upstream and Compliance:
  • · Contribute patches upstream to the Linux kernel PCI subsystem.
  • · Ensure compliance with PCI-SIG and Linux kernel community best practices.
  • · Cross-Team Collaboration:

· Interface with SoC, BIOS/UEFI, board, and validation teams to ensure robust PCIe device support across platforms.

Required Expertise:

  • · Deep understanding of Linux kernel internals, especially drivers/pci and subsystems like hot plug, 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, and pcie_check.
  • · Expertise in power management (runtime, suspend/resume flows) for PCI devices.
  • · Experience with Secure Boot, TrustZone, and virtualisation 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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