STRUCT PANTHOR_FW(9)

🎀 NAME 🎀

okay bestie, welcome to the struct panthor_fw(9) page from the Kernel API Manual — this is the Firmware management struct, and it is lowkey the main character of the FW side of things 💖✨

✨ SYNOPSIS ✨

no cap, the struct is literally this, character for character:

       struct panthor_fw {
           void __iomem *iomem;
           struct panthor_vm *vm;
           struct list_head sections;
           struct panthor_fw_section *shared_section;
           struct panthor_fw_iface iface;
           struct {
             struct delayed_work ping_work;
           } watchdog;
           wait_queue_head_t req_waitqueue;
           bool booted;
           struct panthor_irq irq;
        };

💅 Members 💅

• iomem — the CPU mapping of the MCU_CONTROL iomem region 🫶
• vm — the MCU VM.
• sections — the list of FW sections.
• shared_section — the section that is holding the FW interfaces.
• iface — the FW interfaces.
• watchdog — a little collection of fields all about the FW watchdog 👀
• req_waitqueue — the FW request waitqueue.

Every time a request is sent to a command stream group or the global interface, the caller first busy-waits for the request to be acknowledged, and then falls back to a sleeping wait. This wait queue is here to support the sleeping-wait flavor 💤

• booted — True is the FW is booted.
• irq — Job irq data.

🌈 SEE ALSO 🌈

Kernel file ./drivers/gpu/drm/panthor/panthor_fw.c — and the whole icon squad is:

• struct panthor_fw_binary_hdr(9)
• enum panthor_fw_binary_entry_type(9)
• struct panthor_fw_binary_section_entry_hdr(9)
• struct panthor_fw_binary_iter(9)
• struct panthor_fw_section(9)
• struct panthor_fw_iface(9)
• panthor_fw_get_glb_iface(9)
• panthor_fw_get_csg_iface(9)
• panthor_fw_get_cs_iface(9)
• panthor_fw_conv_timeout(9)
• panthor_fw_alloc_queue_iface_mem(9)
• panthor_fw_alloc_suspend_buf_mem(9)
• iface_fw_to_cpu_addr(9)
• panthor_fw_pre_reset(9)
• panthor_fw_post_reset(9)
• panthor_fw_unplug(9)
• panthor_fw_wait_acks(9)
• panthor_fw_glb_wait_acks(9)
• panthor_fw_csg_wait_acks(9)
• panthor_fw_ring_csg_doorbells(9)
• panthor_fw_init(9)

okay bestie, that’s the whole page 💖 source/version path is ./drivers/gpu/drm/panthor, dated October 2026, and it is all for struct panthor_fw(9) — byeee 🎀✨🦋