dprtc_open(9)

✨ dprtc_open(9) ✨

okay so this is a page from the Kernel API Manual, bestie — it's dprtc_open(9), and it's genuinely shorter than my attention span, so we're gonna get through this together 💖

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🎀 NAME 🎀

dprtc_open — open a control session for the specified object. that's it, that's the whole name section, slay.

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🌸 SYNOPSIS 🌸

int dprtc_open (struct fsl_mc_io *mc_io , u32 cmd_flags , int dprtc_id ,
u16 *token );

like, look at that signature. it's giving "returns an int" and takes four things. noted. 💅

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🦋 ARGUMENTS 🦋

• mc_io — pointer to the MC portal's I/O object. yep, the portal's I/O object, that one 🫶
• cmd_flags — command flags; one or more of 'MC_CMD_FLAG_'. so it's a flags situation, and you already know which family of flags 👑
• dprtc_id — the DPRTC unique ID. it's an int, it's unique, it's the ID, periodt.
• token — the returned token; use it in subsequent API calls. this is a u16 * so like, it's a pointer, she writes back to you, iconic ✨

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💜 DESCRIPTION 💜

so here's the vibe: this function can be used to open a control session for an already created object. key word already created — the object might have been declared in the DPL, or it might've been made by calling the dprtc_create function. either way, it exists before you show up 🙈

and then this function returns a unique authentication token, and here's the part you actually need to remember: that token is associated with the specific object ID and the specific MC portal. so it's not a universal token, it's this object and this portal specifically. no cap.

and because it's that specific, this token must be used in all subsequent commands for this specific object. all of them. every single one. don't lose it, don't mix it up with another object's token, don't try to be cute about it 😭

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⭐ RETURN ⭐

the original page literally lists this section and then says nothing under it. so. yeah. nothing to report here, it's a mystery, we move 💀

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/freescale/dpaa2/dprtc.c
• dprtc_close(9)
• dprtc_set_irq_enable(9)
• dprtc_get_irq_enable(9)
• dprtc_set_irq_mask(9)
• dprtc_get_irq_mask(9)
• dprtc_get_irq_status(9)
• dprtc_clear_irq_status(9)

like, the whole irq friend group is here, obsessed 🧚

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fr fr the only real takeaway: open the session, get your token, and then use that exact token for every subsequent call on that exact object. that's the whole assignment 🍓

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and that's the page, bestie!! source/version is ./drivers/net/ethernet/freesca... and it's dated October 2026, filed under dprtc_open(9) — mwah, go read the irq ones next 💅✨🦋