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/*
* Vendored from src/sys/dev/pci/verite3dio.h
*/
/* $NetBSD: verite3dio.h,v 1.1 2026/07/15 20:53:22 rkujawa Exp $ */
/*
* Copyright (c) 2026 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Radoslaw Kujawa.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* /dev/verite3d - expierimental 3D interface for veritefb(4)
*
* By design, it is completely independent of wsdisplay(4). It supports
* one exclusive client - opening the device stops the 2D microcode.
* Closing the device stops the 3D microcode and restores the console,
* in the state it was left behind.
*
* The client supplies its own RISC microcode (V3D_INIT) and owns
* the FIFO command stream. The kernel moves bytes (DMA) and tracks VRAM,
* but does NOT interpret the command stream. That is responsibility of
* the microcode (on the hardware side) and the userland process.
*/
#ifndef VERITE3DIO_H
#define VERITE3DIO_H
#include <sys/ioccom.h>
#define V3D_RING_SLOTS 4
#define V3D_SLOT_SIZE 65536
#define V3D_VRAM_MMAP_OFF ((off_t)V3D_RING_SLOTS * V3D_SLOT_SIZE)
/* Load client microcode into the foreign slot and cold-start it. */
struct v3d_init {
uint64_t vi_ucode; /* in: user pointer to image */
uint32_t vi_size; /* in: bytes */
uint32_t vi_ctx_base; /* out: context save area (VRAM) */
uint32_t vi_memsize; /* out: total VRAM bytes */
uint32_t vi_pool_base; /* out: first V3D_ALLOC-managed byte */
};
#define V3D_INIT _IOWR('V', 0, struct v3d_init)
struct v3d_submit {
uint32_t vs_slot; /* 0 to V3D_RING_SLOTS-1 */
uint32_t vs_len; /* bytes, word multiple */
uint32_t vs_swap; /* descriptor swap code 0..3 */
};
#define V3D_SUBMIT _IOW('V', 1, struct v3d_submit)
/*
* Fence: send one word (the client microcode's sync command) and
* wait for the response word. In/out: word to send / word received.
*/
#define V3D_SYNC _IOWR('V', 2, uint32_t)
struct v3d_alloc {
uint32_t va_size; /* in: bytes */
uint32_t va_align; /* in: byte alignment (0 = 4) */
uint32_t va_addr; /* out: VRAM byte address */
};
#define V3D_ALLOC _IOWR('V', 3, struct v3d_alloc)
#define V3D_FREE _IOW('V', 4, uint32_t)
struct v3d_mode {
uint32_t vm_depth; /* in: 8 or 16; 0 = query only */
uint32_t vm_frame_base; /* in: scanout base; 0 = keep */
uint32_t vm_width; /* out */
uint32_t vm_height; /* out */
uint32_t vm_stride; /* out: scanout line bytes */
uint32_t vm_pe_stride; /* out: PE Stride(3) dst encoding */
};
#define V3D_MODE _IOWR('V', 5, struct v3d_mode)
/*
* vsync-waited FRAMEBASE flip.
*/
#define V3D_FLIP_NOWAIT 0x80000000U
#define V3D_FLIP _IOW('V', 6, uint32_t)
#endif /* VERITE3DIO_H */
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