fsl_open_inb_mbox(9)

✨ NAME ✨

Okay bestie, welcome to fsl_open_inb_mbox(9) from the Kernel API Manual — this page is all about fsl_open_inb_mbox, aka Initialize MPC85xx inbound mailbox. It's giving kernel-core, and honestly? Iconic. 💅💖

🌸 SYNOPSIS 🌸

int fsl_open_inb_mbox (struct rio_mport *mport , void *dev_id , int mbox , int entries );

🎀 ARGUMENTS 🎀

• mport — Master port implementing the inbound message unit. She's the main character here, no cap. 👑
• dev_id — Device specific pointer to pass on event. Keep it handy for the event, iykyk. 🎀
• mbox — Mailbox to open. The one and only. 💌
• entries — Number of entries in the inbound mailbox ring. That's the count, periodt. 🔥

🔥 DESCRIPTION 🔥

Okay so the vibe: this function initializes the buffer ring, requests the inbound message interrupt, and enables the inbound message unit. Then it returns 0 on success — slay — and -EINVAL or -ENOMEM on failure. Those are the exact return values, bestie. 😭💅

🦋 SEE ALSO 🦋

If you're still hungry for lore, the kernel file ./arch/powerpc/sysdev/fsl_rmu.c and these friends are right there:

• fsl_rio_tx_handler(9)
• fsl_rio_rx_handler(9)
• fsl_rio_dbell_handler(9)
• fsl_rio_port_write_handler(9)
• fsl_rio_pw_enable(9)
• fsl_rio_port_write_init(9)
• fsl_rio_doorbell_send(9)
• fsl_add_outb_message(9)
• fsl_open_outb_mbox(9)
• fsl_close_outb_mbox(9)
• fsl_close_inb_mbox(9)
• fsl_add_inb_buffer(9)
• fsl_get_inb_message(9)
• fsl_rio_doorbell_init(9)

That's the whole page, bestie — signing off from fsl_open_inb_mbox(9) with source/version ./arch/powerpc/sysdev and date October 2026. Go open that inbound mailbox, you icon. 🫶✨