dw_pcie_ep_linkdown(9)

🎀 dw_pcie_ep_linkdown(9) 🎀

bestie, welcome to the Kernel API Manual page for dw_pcie_ep_linkdown(9) — it’s giving kernel-function realness and I’m obsessed. 💖

✨ NAME ✨

okay so dw_pcie_ep_linkdown — Notify EPF drivers about Link Down event. that’s the whole mood. periodt. 💅

🌸 SYNOPSIS 🌸

the signature is literally:

void dw_pcie_ep_linkdown (struct dw_pcie_ep *ep );

💅 ARGUMENTS 💅

• ep — the DWC EP device, bestie. that’s the one.

🦋 DESCRIPTION 🦋

before the notification gets sent to the EPF drivers, the non-sticky registers are also initialized. why? because those registers need to be initialized before the link comes back again — no cap, it’s necessary. ✨

🔥 SEE ALSO 🔥

• the kernel file is literally ./drivers/pci/controller/dwc/pcie-designware-ep.c
• dw_pcie_ep_get_func_from_ep(9)
• dw_pcie_ep_reset_bar(9)
• dw_pcie_ep_raise_intx_irq(9)
• dw_pcie_ep_raise_msi_irq(9)
• dw_pcie_ep_raise_msix_irq_doorbell(9)
• dw_pcie_ep_raise_msix_irq(9)
• dw_pcie_ep_cleanup(9)
• dw_pcie_ep_deinit(9)
• dw_pcie_ep_init_registers(9)
• dw_pcie_ep_linkup(9)
• dw_pcie_ep_init(9)

mwah 💋 signing off from the ./drivers/pci/controller/dwc source/version corner, dated October 2026. 🫶