heci_fwcbrw_read(9)

💅 heci_fwcbrw_read(9) — the Kernel API Manual moment 🎀

okay so this is heci_fwcbrw_read, like, the function itself, and it lives in the Kernel API Manual (section 9, bestie, kernel functions). she's a little reader. she reads. let's get into it ✨

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✨ NAME ✨

heci_fwcbrw_read — reads 32bit data from heci circular buffer 🌀💖

like literally that's the whole job. 32 bits. in. from the circular buffer. slay.

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🦋 SYNOPSIS 🦋

u32 heci_fwcbrw_read (const struct issei_heci_hw *hw );

that's the whole signature, no notes 💅 and yes it returns u32, we get to that.

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🌸 ARGUMENTS 🌸

• hw — the heci hardware structure 🫶 this is your hardware bestie, the thing she needs to go do the read. hand it over and she's off.

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⭐ RETURN ⭐

she gives you back the FW_CB_RW register value, typed as a u32 💖 so like, that's what came out of the register. that's the tea. no cap.

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🔥 SEE ALSO 🔥

first up, the kernel file where all this lives:

./drivers/misc/issei/hw_heci.c 👑

and then the whole friend group, periodt:

• heci_reg_read(9)
• heci_reg_write(9)
• heci_hcbww_write(9)
• heci_irq_src(9)
• heci_hcsr_read(9)
• heci_hcsr_write(9)
• heci_hcsr_set(9)
• heci_hcsr_set_hig(9)
• heci_fwcsr_read(9)
• heci_count_full_read_slots(9)
• heci_irq_disable(9)
• heci_irq_clear(9)
• issei_heci_irq_clear(9)
• issei_heci_irq_enable(9)
• issei_heci_irq_disable(9)
• issei_heci_hw_reset_release(9)
• heci_hw_is_ready(9)
• heci_hw_is_resetting(9)
• issei_heci_host_set_ready(9)
• issei_heci_hw_reset(9)
• issei_heci_irq_write_generate(9)
• issei_heci_hw_config(9)
• heci_write_hbuf(9)
• heci_read_hbuf(9)
• issei_heci_setup_message_send(9)
• issei_heci_setup_message_recv(9)
• issei_heci_dev_init(9)

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and that's the page!! 🎀✨

cute lil sign-off before you go: this one's from the source path ./drivers/misc/issei, dated October 2026, and yeah she's heci_fwcbrw_read(9) — icon behavior only 💜🦋 mwah, go read ur circular buffer bestie 🫶