STRUCT OCTEON_HCD(9)

💖 NAME 💖

struct octeon_hcd - the state of the USB block. That’s the whole assignment, bestie: this is the state of the USB block, and we’re about to get into every field like it’s a group-chat screenshot. This page comes from the Kernel API Manual, and the main character is struct octeon_hcd(9) 💅✨

✨ SYNOPSIS ✨

struct octeon_hcd {
    spinlock_t lock;
    int init_flags;
    int index;
    int idle_hardware_channels;
    union cvmx_usbcx_hprt usbcx_hprt;
    struct cvmx_usb_pipe *pipe_for_channel[MAX_CHANNELS];
    int indent;
    struct cvmx_usb_port_status port_status;
    struct list_head idle_pipes;
    struct list_head active_pipes[4];
    u64 frame_number;
    struct cvmx_usb_transaction *active_split;
    struct cvmx_usb_tx_fifo periodic;
    struct cvmx_usb_tx_fifo nonperiodic;
    struct hrtimer sof_timer;
};

🎀 Members 🎀

Okay so the page lists these member blurbs, and we are not skipping a single one — every detail stays, no cap 💖

🌸 Description 🌸

• lock — Serialization lock. Lock it down, bestie.
• init_flags — Flags passed to initialize.
• index — Which USB block this is for.
• idle_hardware_channels — Bit set for every idle hardware channel.
• usbcx_hprt — Stored port status so we don’t need to read a CSR to determine splits.
• pipe_for_channel — Map channels to pipes.
• pipe — Storage for pipes. Yes, the page lists this one too — keeping it exactly as given.
• indent — Used by debug output to indent functions.
• port_status — Last port status used for change notification.
• idle_pipes — List of open pipes that have no transactions.
• active_pipes — Active pipes indexed by transfer type.
• frame_number — Increments every SOF interrupt for time keeping.
• active_split — Points to the current active split, or NULL.

Quick note, bestie: the struct block also has periodic, nonperiodic, and sof_timer, but the page doesn’t give member blurbs for those, so I’m not inventing anything — we keep it factual, periodt 💅

🔥 SEE ALSO 🔥

• Kernel file ./drivers/usb/host/octeon-hcd.c — the actual source, iykyk 🫶
• enum cvmx_usb_speed(9)
• enum cvmx_usb_transfer(9)
• enum cvmx_usb_direction(9)
• enum cvmx_usb_status(9)
• struct cvmx_usb_port_status(9)
• struct cvmx_usb_iso_packet(9)
• enum cvmx_usb_initialize_flags(9)
• enum cvmx_usb_pipe_flags(9)
• struct cvmx_usb_transaction(9)
• struct cvmx_usb_pipe(9)
• struct octeon_temp_buffer(9)
• octeon_alloc_temp_buffer(9)
• octeon_free_temp_buffer(9)
• octeon_map_urb_for_dma(9)
• octeon_unmap_urb_for_dma(9)

That’s the whole page, bestie 🫶 Source/version is <source>./drivers/usb/host</source>, dated <date>October 2026</date>, and this was struct octeon_hcd(9) from the Kernel API Manual — every detail ate and left no crumbs 💅✨🍓