velocity_init_dma_rings(9)

💅 velocity_init_dma_rings(9) 💅

okay so we're in the Kernel API Manual bestie, and today's main character is velocity_init_dma_rings 🎀

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✨ NAME ✨

velocity_init_dma_rings — set up DMA rings, that's the whole vibe 💫

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🌸 SYNOPSIS 🌸

int velocity_init_dma_rings (struct velocity_info *vptr );

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🦋 ARGUMENTS 🦋

• vptr — the Velocity you're setting up 🫶 like, the actual struct velocity_info * you're handing over, no cap

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💖 DESCRIPTION 💖

So what it does is: it allocates PCI mapped DMA rings 💅 that's it, that's the whole thing. The receive and transmit layer are gonna use them, so this is lowkey the moment where the rings get born 🐣✨

ngl, note the words PCI mapped — these aren't just any rings, they're PCI mapped, so the hardware and the driver can both be obsessed with the same memory 🔥

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👑 SEE ALSO 👑

🧚 the source file itself

• Kernel file ./drivers/net/ethernet/via/via-velocity.c — go read it, iykyk 📖

🌈 the whole friend group (65 of them, fr fr, we're not skipping a single one)

• mac_get_cam_mask(9), mac_set_cam_mask(9), mac_set_cam(9), mac_wol_reset(9), get_chip_name(9), velocity_set_int_opt(9), velocity_set_bool_opt(9), velocity_get_options(9), velocity_init_cam_filter(9), velocity_rx_reset(9), velocity_get_opt_media_mode(9), safe_disable_mii_autopoll(9), enable_mii_autopoll(9), velocity_mii_read(9), mii_check_media_mode(9), velocity_mii_write(9), set_mii_flow_control(9), mii_set_auto_on(9), velocity_set_media_mode(9), velocity_print_link_status(9), enable_flow_control_ability(9), velocity_soft_reset(9), velocity_set_multi(9), mii_init(9), setup_queue_timers(9), setup_adaptive_interrupts(9), velocity_init_registers(9), velocity_alloc_rx_buf(9), velocity_free_rd_ring(9), velocity_init_rd_ring(9), velocity_init_td_ring(9), velocity_free_dma_rings(9), velocity_free_tx_buf(9), velocity_free_td_ring(9), velocity_error(9), velocity_tx_srv(9), velocity_rx_csum(9), velocity_rx_copy(9), velocity_iph_realign(9), velocity_receive_frame(9), velocity_rx_srv(9), velocity_intr(9), velocity_open(9), velocity_shutdown(9), velocity_change_mtu(9), velocity_poll_controller(9), velocity_mii_ioctl(9), velocity_ioctl(9), velocity_get_stats(9), velocity_close(9), velocity_xmit(9), velocity_init_info(9), velocity_get_pci_info(9), velocity_get_platform_info(9), velocity_print_info(9), velocity_probe(9), velocity_remove(9), wol_calc_crc(9), velocity_set_wol(9), velocity_save_context(9), velocity_restore_context(9), velocity_ethtool_up(9), velocity_ethtool_down(9), velocity_init_module(9), velocity_cleanup_module(9)

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and that's the page, bestie 🫶 slay

this whole thing lives in ./drivers/net/ethernet/via, it's the Kernel API Manual edition dated October 2026, and it's literally titled velocity_init_dma_rings(9) — don't forget to free your rings, ily, bye 💜🎀