ppc440spe_c...art_null_xor(9)
β¨ NAME β¨
ppc440spe_chan_start_null_xor β bestie, this one kicks off the very first XOR operation π (and heads up: DMA engines use FIFOs, as opposite to chains used in XOR, so this whole thing is a XOR specific operation β iykyk π
)
π«Ά SYNOPSIS π«Ά
void ppc440spe_chan_start_null_xor (struct ppc440spe_adma_chan *chan );
π ARGUMENTS π
chanβ okay so the manual literally just says -- undescribed -- π not me being lazy, that's word-for-word what's on the page. It's astruct ppc440spe_adma_chan *, and that's genuinely all the lore we get. Go read the header if you need more, fr fr.
π₯ SEE ALSO π₯
The kernel file itself lives at ./drivers/dma/ppc4xx/adma.c π
And here's the full squad β every single one, no cap, not skipping a single icon π«Ά
ppc440spe_desc_init_interrupt(9)ppc440spe_desc_init_null_xor(9)ppc440spe_desc_init_xor(9)ppc440spe_desc_init_dma2pq(9)ppc440spe_desc_init_dma01pq(9)ppc440spe_desc_init_dma01pqzero_sum(9)ppc440spe_desc_init_memcpy(9)ppc440spe_desc_set_src_addr(9)ppc440spe_desc_set_src_mult(9)ppc440spe_desc_set_dest_addr(9)ppc440spe_desc_set_byte_count(9)ppc440spe_desc_set_rxor_block_size(9)ppc440spe_desc_set_dcheck(9)ppc440spe_xor_set_link(9)ppc440spe_desc_set_link(9)ppc440spe_desc_get_link(9)ppc440spe_desc_is_aligned(9)ppc440spe_chan_xor_slot_count(9)ppc440spe_dma2_pq_slot_count(9)ppc440spe_adma_device_clear_eot_status(9)ppc440spe_chan_is_busy(9)ppc440spe_chan_set_first_xor_descriptor(9)ppc440spe_dma_put_desc(9)ppc440spe_chan_append(9)ppc440spe_chan_get_current_descriptor(9)ppc440spe_chan_run(9)ppc440spe_can_rxor(9)ppc440spe_get_group_entry(9)ppc440spe_adma_free_slots(9)ppc440spe_adma_run_tx_complete_actions(9)ppc440spe_adma_clean_slot(9)__ppc440spe_adma_slot_cleanup(9)ppc440spe_adma_tasklet(9)ppc440spe_adma_slot_cleanup(9)ppc440spe_adma_alloc_slots(9)ppc440spe_adma_alloc_chan_resources(9)ppc440spe_rxor_set_src(9)ppc440spe_rxor_set_mult(9)ppc440spe_adma_check_threshold(9)ppc440spe_adma_tx_submit(9)ppc440spe_adma_prep_dma_interrupt(9)ppc440spe_adma_prep_dma_memcpy(9)ppc440spe_adma_prep_dma_xor(9)ppc440spe_adma_init_dma2rxor_slot(9)ppc440spe_dma01_prep_mult(9)ppc440spe_dma01_prep_sum_product(9)ppc440spe_adma_prep_dma_pq(9)ppc440spe_adma_prep_dma_pqzero_sum(9)ppc440spe_adma_prep_dma_xor_zero_sum(9)ppc440spe_adma_set_dest(9)ppc440spe_adma_pq_set_dest(9)ppc440spe_desc_set_xor_src_cnt(9)ppc440spe_adma_pq_set_src(9)ppc440spe_adma_memcpy_xor_set_src(9)ppc440spe_adma_dma2rxor_inc_addr(9)ppc440spe_adma_dma2rxor_prep_src(9)ppc440spe_adma_dma2rxor_set_src(9)ppc440spe_adma_dma2rxor_set_mult(9)ppc440spe_init_rxor_cursor(9)ppc440spe_adma_pq_set_src_mult(9)ppc440spe_adma_free_chan_resources(9)ppc440spe_adma_tx_status(9)ppc440spe_adma_eot_handler(9)ppc440spe_adma_err_handler(9)ppc440spe_test_callback(9)ppc440spe_adma_issue_pending(9)ppc440spe_test_raid6(9)ppc440spe_adma_probe(9)ppc440spe_adma_remove(9)
and that's the whole page, bestie π this one came out of the Kernel API Manual (section 9), from the source tree at ./drivers/dma/ppc4xx, dated October 2026 β¨ go forth and XOR responsibly π¦π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms