ntb_spad_read(9)

💖 ntb_spad_read(9) — Kernel API Manual 💖

okay so bestie, welcome to the ntb_spad_read page, part of the Kernel API Manual ✨ This one's short and sweet and honestly kind of a vibe — it's the "just go look at it" of the NTB world 🎀

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✨ NAME ✨

ntb_spad_read — read the local scratchpad register 💅

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🦋 SYNOPSIS 🦋

u32 ntb_spad_read (struct ntb_dev *ntb , int sidx );

like. that's the whole thing. that's the function. she's compact 👑

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🌸 ARGUMENTS 🌸

• ntb — the NTB device context. your whole situation, basically 🫶
• sidx — the scratchpad index. which scratchpad you're peeking at, iykyk 🌈

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💜 DESCRIPTION 💜

Read the local scratchpad register. And then return the value. That's it, that's the entire plot 😭✨ lowkey iconic in how little it asks of you.

it's local, bestie — note that, because there's a whole other ntb_peer_spad_read(9) for the peer side and you do NOT wanna mix those up 🙈

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⭐ RETURN ⭐

The value of the local scratchpad register. that's the return value. it's giving "what it says on the tin" 💀💖

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🧚 SEE ALSO 🧚

Kernel file ./include/linux/ntb.h fr fr, plus the whole friend group 👑:

• enum ntb_topo(9), enum ntb_speed(9), enum ntb_width(9), enum ntb_default_port(9)
• struct ntb_client_ops(9), struct ntb_ctx_ops(9), struct ntb_dev_ops(9), struct ntb_client(9), struct ntb_dev(9)
• ntb_register_client(9), ntb_unregister_client(9), ntb_register_device(9), ntb_unregister_device(9)
• ntb_set_ctx(9), ntb_clear_ctx(9)
• ntb_link_event(9), ntb_db_event(9), ntb_msg_event(9)
• ntb_default_port_number(9), ntb_default_peer_port_count(9), ntb_default_peer_port_number(9), ntb_default_peer_port_idx(9)
• ntb_port_number(9), ntb_peer_port_count(9), ntb_peer_port_number(9)
• ntb_logical_port_number(9), ntb_peer_logical_port_number(9), ntb_peer_port_idx(9)
• ntb_link_is_up(9), ntb_link_enable(9), ntb_link_disable(9)
• ntb_mw_count(9), ntb_mw_get_align(9), ntb_mw_set_trans(9), ntb_mw_clear_trans(9)
• ntb_peer_mw_count(9), ntb_peer_mw_get_addr(9), ntb_peer_mw_set_trans(9), ntb_peer_mw_clear_trans(9)
• ntb_db_is_unsafe(9), ntb_db_valid_mask(9), ntb_db_vector_count(9), ntb_db_vector_mask(9)
• ntb_db_read(9), ntb_db_set(9), ntb_db_clear(9), ntb_db_read_mask(9), ntb_db_set_mask(9), ntb_db_clear_mask(9)
• ntb_peer_db_addr(9), ntb_peer_db_read(9), ntb_peer_db_set(9), ntb_peer_db_clear(9), ntb_peer_db_read_mask(9), ntb_peer_db_set_mask(9), ntb_peer_db_clear_mask(9)
• ntb_spad_is_unsafe(9), ntb_spad_count(9), ntb_spad_write(9)
• ntb_peer_spad_addr(9), ntb_peer_spad_read(9), ntb_peer_spad_write(9)
• ntb_msg_count(9), ntb_msg_inbits(9), ntb_msg_outbits(9), ntb_msg_read_sts(9), ntb_msg_clear_sts(9), ntb_msg_set_mask(9), ntb_msg_clear_mask(9), ntb_msg_read(9), ntb_peer_msg_write(9)
• ntb_get_dma_dev(9), ntb_peer_resource_idx(9), ntb_peer_highest_mw_idx(9)

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okay that's the whole page, go read your scratchpad bestie 🍓✨

huge mwah to ./include/linux — this one's from October 2026 🎀💖 slay.