ipc_imem_init(9)

💖 ipc_imem_init — a Kernel API Manual moment 💖

okay so bestie, we're in the Kernel API Manual today (section 9, kernel-land, big brain hours) and the main character of this page is ipc_imem_init. say hi ✨

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🌸 NAME 🌸

ipc_imem_init — literally initializes the shared memory region. that's it, that's the vibe 🎀

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🦋 SYNOPSIS 🦋

struct iosm_imem * ipc_imem_init (struct iosm_pcie *pcie , unsigned int
device_id , void __iomem *mmio , struct device *dev );

no cap, it takes four things and hands you back a pointer. we love a clean signature 💅

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🌈 ARGUMENTS 🌈

• pcie — pointer to the core driver data-struct. the whole main-character data situation, iykyk 🫶
• device_id — the PCI device ID. like a little name tag but for hardware 🎀
• mmio — pointer to the mmio area. memory-mapped i/o realness ✨
• dev — pointer to the device structure. the classic struct device bestie 🦋

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⭐ RETURN ⭐

you get an initialized imem pointer on success. and if it doesn't slay? NULL. that's it, that's the deal 💀

lowkey important: success = pointer, failure = NULL. always vibe check your return value before dereferencing, bestie, fr fr.

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👑 SEE ALSO 👑

the whole friend group 💖 — first up, the kernel file ./drivers/net/wwan/iosm/iosm_ipc_imem.h, then:

enum ipc_ctype(9), struct ipc_pipe(9), struct ipc_mem_channel(9), enum ipc_phase(9), struct iosm_imem(9), ipc_imem_pm_s2idle_sleep(9), ipc_imem_pm_suspend(9), ipc_imem_pm_resume(9), ipc_imem_cleanup(9), ipc_imem_irq_process(9), imem_get_device_sleep_state(9), ipc_imem_td_update_timer_suspend(9), ipc_imem_channel_close(9), ipc_imem_channel_alloc(9), ipc_imem_channel_open(9), ipc_imem_td_update_timer_start(9), ipc_imem_ul_write_td(9), ipc_imem_ul_send(9), ipc_imem_channel_update(9), ipc_imem_channel_free(9), ipc_imem_hrtimer_stop(9), ipc_imem_pipe_cleanup(9), ipc_imem_pipe_close(9), ipc_imem_phase_update(9), ipc_imem_phase_get_string(9), ipc_imem_msg_send_feature_set(9), ipc_imem_ipc_init_check(9), ipc_imem_channel_init(9), ipc_imem_devlink_trigger_chip_info(9)

that's the full roster. go read them, they're all iconic 🧚

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and that's the page, bestie 🌸 this one comes from ./drivers/net/wwan/iosm, dated October 2026, and it's ipc_imem_init(9) — mwah, go init some shared memory 💜✨