ipc_imem_channel_open(9)

👑 ipc_imem_channel_open(9) — the "establish the pipes" girlies 💅

okay so bestie, welcome to the kernel API manual for ipc_imem_channel_open — this is section 9, the kernel API section, and we are literally about to open some pipes. not like metaphorical pipes. like. actual pipes. it's giving plumbing but make it networking 🫶

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✨ NAME ✨

ipc_imem_channel_open — establish the pipes. that's it. that's the whole name. short, sweet, iconic. 🎀

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🌸 SYNOPSIS 🌸

struct ipc_mem_channel * ipc_imem_channel_open (struct iosm_imem
*ipc_imem , int channel_id , u32 db_id );

ok so it hands you back a struct ipc_mem_channel * pointer, and it takes three things — an imem struct pointer, a channel id, and a doorbell id. we'll get into those. keep reading 💖

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💅 ARGUMENTS 💅

• ipc_imem — pointer to the imem data-struct. yes bestie, that's the literal description and honestly it ate. it's your "this is the imem we're working with" pointer.
• channel_id — the Channel ID returned during alloc. so like, you don't just make one up, you get it from alloc first, mmkay? 👑
• db_id — the Doorbell ID for trigger identifier. it's the doorbell. it rings. it triggers. no cap. 🔔

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⭐ RETURN ⭐

Pointer of ipc_mem_channel on success, and NULL on failure. that's the whole vibe check — you either get a channel back, or you get NULL and you need to go touch grass and figure out what went wrong 😭

fr fr always check for NULL before you dereference. that's not me being extra, that's just self-respect.

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🦋 SEE ALSO 🦋

literally the whole friend group of related symbols, iykyk — go read these next, they're all in the kernel file ./drivers/net/wwan/iosm/iosm_ipc_imem.h:

• enum ipc_ctype(9)
• struct ipc_pipe(9)
• struct ipc_mem_channel(9)
• enum ipc_phase(9)
• struct iosm_imem(9)
• ipc_imem_init(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_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)

like, that's the whole roster. open them all in tabs, you'll be fine 💜

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and that's the page, bestie 💖 this cutie came out of <cyan>./drivers/net/wwan/iosm</cyan> and it's dated <yellow>October 2026</yellow>, brought to you by the fine people who name things ipc_imem_*. screenshot it, bookmark it, send it to the group chat — periodt. 🎀✨🦋