STRUCT DRM_PVR_DEV_QUERY_ENHANCEMENTS(9)

💜 NAME 💜

struct drm_pvr_dev_query_enhancements — okay so this is the little container bestie, the one you use to fetch info about the optional enhancements your device supports, the ones that need actual support in the user mode driver. It's giving "permission slip for the extra credit stuff," and yes it lives in the Kernel API Manual, so we're fancy now. 👑

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✨ SYNOPSIS ✨

struct drm_pvr_dev_query_enhancements {
    __u64 enhancements;
    __u16 count;
    __u16 _padding_a;
    __u32 _padding_c;
 };

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🎀 Members 🎀

• enhancements — a userspace address pointing at the hardware enhancements __u32 array. 📍

Real talk: these enhancements affect both userspace and the kernel or firmware. They're disabled by default, and userspace has to opt in. The opt-in mechanism? Depends on the enhancement, bestie. Every one's got its own vibe. 💅

• count — the length of enhancements, aka the number of __u32. 🔢
• _padding_a — reserved. This field must be zeroed. No cap, zero it out. 🫧
• _padding_c — reserved too. This field must be zeroed. Same energy, don't leave stray bits in there. 🫧

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🌸 Description 🌸

So when you're fetching this type, struct drm_pvr_ioctl_dev_query_args.type has to be set to DRM_PVR_DEV_ENHANCEMENTS_GET. That's the whole assignment. Set it, don't fumble it. 🎯

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🦋 SEE ALSO 🦋

The whole friend group, mutuals only, no gatekeeping — go read these next:

• Kernel file ./include/uapi/drm/pvr_drm.h
• PowerVR UAPI(9)
• struct drm_pvr_obj_array(9)
• DRM_PVR_OBJ_ARRAY(9)
• PowerVR IOCTL interface(9)
• PVR_IOCTL(9)
• PowerVR IOCTL DEV_QUERY interface(9)
• struct drm_pvr_dev_query_gpu_info(9)
• struct drm_pvr_dev_query_runtime_info(9)
• struct drm_pvr_dev_query_quirks(9)
• enum drm_pvr_heap_id(9)
• struct drm_pvr_heap(9)
• struct drm_pvr_dev_query_heap_info(9)
• enum drm_pvr_static_data_area_usage(9)
• struct drm_pvr_static_data_area(9)
• struct drm_pvr_dev_query_static_data_areas(9)
• enum drm_pvr_dev_query(9)
• struct drm_pvr_ioctl_dev_query_args(9)
• PowerVR IOCTL CREATE_BO interface(9)
• Flags for CREATE_BO(9)
• struct drm_pvr_ioctl_create_bo_args(9)
• PowerVR IOCTL GET_BO_MMAP_OFFSET interface(9)
• struct drm_pvr_ioctl_get_bo_mmap_offset_args(9)
• PowerVR IOCTL CREATE_VM_CONTEXT and DESTROY_VM_CONTEXT interfaces(9)
• struct drm_pvr_ioctl_create_vm_context_args(9)
• struct drm_pvr_ioctl_destroy_vm_context_args(9)
• PowerVR IOCTL VM_MAP and VM_UNMAP interfaces(9)
• struct drm_pvr_ioctl_vm_map_args(9)
• struct drm_pvr_ioctl_vm_unmap_args(9)
• PowerVR IOCTL CREATE_CONTEXT and DESTROY_CONTEXT interfaces(9)
• enum drm_pvr_ctx_priority(9)
• enum drm_pvr_ctx_type(9)
• struct drm_pvr_ioctl_create_context_args(9)
• struct drm_pvr_ioctl_destroy_context_args(9)
• PowerVR IOCTL CREATE_FREE_LIST and DESTROY_FREE_LIST interfaces(9)
• struct drm_pvr_ioctl_create_free_list_args(9)
• struct drm_pvr_ioctl_destroy_free_list_args(9)
• PowerVR IOCTL CREATE_HWRT_DATASET and DESTROY_HWRT_DATASET interfaces(9)
• struct drm_pvr_create_hwrt_geom_data_args(9)
• struct drm_pvr_create_hwrt_rt_data_args(9)
• struct drm_pvr_ioctl_create_hwrt_dataset_args(9)
• struct drm_pvr_ioctl_destroy_hwrt_dataset_args(9)
• PowerVR IOCTL SUBMIT_JOBS interface(9)
• Flags for the drm_pvr_sync_op object.(9)
• struct drm_pvr_sync_op(9)
• Flags for SUBMIT_JOB ioctl geometry command.(9)
• Flags for SUBMIT_JOB ioctl fragment command.(9)
• Flags for SUBMIT_JOB ioctl compute command.(9)
• Flags for SUBMIT_JOB ioctl transfer command.(9)
• enum drm_pvr_job_type(9)
• struct drm_pvr_hwrt_data_ref(9)
• struct drm_pvr_job(9)
• struct drm_pvr_ioctl_submit_jobs_args(9)

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and that's the whole page, bestie — go opt in responsibly 💖

courtesy of <pink>./include/uapi/drm</pink>, dated <lavender>October 2026</lavender> 🗓️✨ mwah, ilysm, now go zero those padding fields 🫶