hl_get_pci_memory_region(9)

💖 hl_get_pci_memory_region(9) 💖

okay so bestie, welcome to the Kernel API Manual — this one is literally about hl_get_pci_memory_region and it's giving “get PCI region for given address” energy. no cap, let's get into it 🫶

✨ NAME ✨

• hl_get_pci_memory_region — get PCI region for given address 💅

🌸 SYNOPSIS 🌸

enum pci_region hl_get_pci_memory_region (struct hl_device *hdev , u64
       addr );

🎀 ARGUMENTS 🎀

• hdev — Pointer to hl_device structure.
• addr — device address.

🦋 DESCRIPTION 🦋

Okay so on success this returns the region index — slay. Otherwise it returns PCI_REGION_NUMBER, which is the invalid region index, so like… that's the “nope, not a real region” answer, bestie. 💀

🌈 SEE ALSO 🌈

• Kernel file: ./drivers/accel/habanalabs/common/pci/pci.c
• hl_pci_bars_map(9)
• hl_pci_bars_unmap(9)
• hl_pci_elbi_write(9)
• hl_pci_iatu_write(9)
• hl_pci_set_inbound_region(9)
• hl_pci_set_outbound_region(9)
• hl_pci_init(9)
• hl_pci_fini(9)

xoxo, your kernel bestie 💖 — source/version: ./drivers/accel/habanalabs/com..., date: October 2026, page: hl_get_pci_memory_region(9). periodt.