STRUCT PANTHOR_IRQ(9)

💅 struct panthor_irq(9) 💅

okay so this is the Kernel API Manual page for struct panthor_irq, and bestie, it is literally the IRQ data era. ✨ Used to automate IRQ handling for the 3 different IRQs in this driver — no cap, that's the whole vibe.

✨ NAME ✨

struct panthor_irq — IRQ data 🎀

🌸 SYNOPSIS 🌸

       struct panthor_irq {
           struct panthor_device *ptdev;
           void __iomem *iomem;
           int irq;
           u32 mask;
           spinlock_t mask_lock;
           atomic_t state;
        };

🎀 Members 🎀

• ptdev — Panthor device. 🫶
• iomem — CPU mapping of the IRQ base address. literally the map, iykyk.
• irq — IRQ number. 💅
• mask — values to write to xxx_INT_MASK if active. periodt.
• mask_lock — protects modifications to _INT_MASK and mask. 🔥

🚨 okay bestie, this is the crucial caveat: in paths where _INT_MASK is updated based on a state transition/check, it's crucial for the state update/check to be inside the locked section. Otherwise it introduces a race window leading to potential _INT_MASK inconsistencies. not me warning you dramatically, but fr fr. 💀

• state — one of enum panthor_irq_state, reflecting the current state. 🌈

💖 Description 💖

Used to automate IRQ handling for the 3 different IRQs we have in this driver. that's it, that's the main character energy. 👑

🦋 SEE ALSO 🦋

• Kernel file ./drivers/gpu/drm/panthor/panthor_device.h
• struct panthor_soc_data(9)
• enum panthor_device_pm_state(9)
• struct panthor_device(9)
• struct panthor_file(9)
• panthor_device_schedule_reset(9)
• panthor_device_reset_is_pending(9)
• panthor_exception_is_fault(9)
• PANTHOR_IRQ_HANDLER(9)

xoxo, signing off from ./drivers/gpu/drm/panthor — October 2026, struct panthor_irq(9) out! 💖🫶✨