set_xor_val(9)

💫 set_xor_val(9) — the kernel API manual, bestie edition 💫

Okay so real talk: this is a section 9 kernel API page, which means it's for the driver-dev girlies, not the "how do I unzip a file" girlies. It's about one tiny function that flips one tiny lever on a hardware descriptor. Small? Yes. Iconic? Also yes. Let's get into it 🎀

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✨ NAME ✨

set_xor_val — literally just sets the word for the XOR operation. That's it. That's the whole job. She's a one-task queen and she does it slayfully 💅

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🌸 SYNOPSIS 🌸

void set_xor_val (struct cc_hw_desc *pdesc , u32 val );

Returns nothing (void), takes two things, done. No cap, the simplest signature in the whole header file 🦋

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🫶 ARGUMENTS 🫶

• pdesc — Pointer to HW descriptor struct. This is the descriptor you're decorating, bestie. You're handing her a little instruction and she's putting it on the outfit ✨
• val — XOR data value. The actual number going in. This is the what, the pdesc is the where 💖

Not me having exactly two arguments and zero drama about it. We love a low-maintenance function 🙈

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🔥 SEE ALSO 🔥

Okay this is the part where I hold your hand, because the see-also list on this page is enormous and honestly it's giving "my friend group is 38 people and I love every single one of them." All of these live in the kernel file ./drivers/crypto/ccree/cc_hw_queue_defs.h — that's the mothership, the group chat, the whole vibe 🌈

Go read up on:

hw_desc_init(9), set_queue_last_ind_bit(9), set_din_type(9), set_din_no_dma(9), set_cpp_crypto_key(9), set_din_sram(9), set_din_const(9), set_din_not_last_indication(9), set_dout_type(9), set_dout_dlli(9), set_dout_mlli(9), set_dout_no_dma(9), set_xor_active(9), set_aes_not_hash_mode(9), set_aes_xor_crypto_key(9), set_dout_sram(9), set_xex_data_unit_size(9), set_multi2_num_rounds(9), set_flow_mode(9), set_cipher_mode(9), set_hash_cipher_mode(9), set_cipher_config0(9), set_cipher_config1(9), set_hw_crypto_key(9), set_bytes_swap(9), set_cmac_size0_mode(9), set_key_size(9), set_key_size_aes(9), set_key_size_des(9), set_setup_mode(9), set_cipher_do(9).

That's the whole roster, periodt. Each one's a little setter sibling and they all do their one thing on the descriptor. set_xor_val is just the one holding the XOR value 💜

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Sign-off time, bestie ✨

This page lives in ./drivers/crypto/ccree, dated October 2026, and it's filed under set_xor_val(9) in the Kernel API Manual. Go set some XOR values, be the main character of your crypto driver, and remember: two arguments, zero drama, always 🧚💖🎀