STRUCT QCOM_PCIE_EP(9)

💅 struct qcom_pcie_ep(9)

okay so bestie, welcome to the Kernel API Manual — yes, that's the manual name, we're being fancy today ✨ — and today's main character is the Qualcomm PCIe Endpoint Controller. no cap, this struct is lowkey the whole personality of pcie-qcom-ep.c. let's get into it 🫶

🌸 NAME 🌸

struct qcom_pcie_ep — the Qualcomm PCIe Endpoint Controller. that's it, that's the vibe. 👑

🎀 SYNOPSIS 🎀

here's the exact shape of it, character for character, don't touch a thing:

struct qcom_pcie_ep {
    struct dw_pcie pci;
    void __iomem *parf;
    void __iomem *mmio;
    struct regmap *perst_map;
    struct resource *mmio_res;
    struct reset_control *core_reset;
    struct gpio_desc *reset;
    struct gpio_desc *wake;
    struct phy *phy;
    struct dentry *debugfs;
    struct icc_path *icc_mem;
    struct clk_bulk_data *clks;
    int num_clks;
    u32 perst_en;
    u32 perst_sep_en;
    const struct qcom_pcie_ep_cfg *cfg;
    enum qcom_pcie_ep_link_status link_status;
    int global_irq;
    int perst_irq;
 };

✨ Members ✨

okay this is the fun part, meet the whole cast 🎬 every single one of them, no skipping:

• pci — the Designware PCIe controller struct. the blueprint bestie. 🏗️
• parf — Qualcomm PCIe specific PARF register base. very on-brand, very Qualcomm. 💜
• mmio — MMIO register base. the classic. 🎀
• perst_map — the PERST regmap. 🗺️
• mmio_res — MMIO region resource. it's giving "the actual memory real estate". 🏠
• core_reset — PCIe Endpoint core reset. hitting refresh on the whole thing. 🔄
• reset — the PERST# GPIO. ⚡
• wake — the WAKE# GPIO. rise and shine, king. ☀️
• phy — PHY controller block. the physical layer, the moment. 🧚
• debugfs — the PCIe Endpoint Debugfs directory. for when you wanna snoop 👀
• icc_mem — handle to an interconnect path between PCIe and MEM. the ~connection~ 🦋
• clks — PCIe clocks. tick tock. ⏰
• num_clks — PCIe clocks count. yes, we counted them. 🌈
• perst_en — flag for PERST enable. 🚩
• perst_sep_en — flag for PERST separation enable. the sequel flag. 🚩🚩
• cfg — the PCIe EP config struct. 🛠️
• link_status — PCIe Link status. are we linking or are we not linking, that is the question. 🔗
• global_irq — Qualcomm PCIe specific Global IRQ. 🌍
• perst_irq — the PERST# IRQ. ⚡ again but interrupt-flavoured.

🔥 SEE ALSO 🔥

• the kernel file ./drivers/pci/controller/dwc/pcie-qcom-ep.c
• struct qcom_pcie_ep_cfg(9) — go read that one next, iykyk 💅

and that's the whole page bestie, you ate that 🍓 fr fr. this was live from ./drivers/pci/controller/dwc, dated October 2026 — slay, mwah 💖