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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
*
* Copyright 2016-2018 HabanaLabs, Ltd.
* All Rights Reserved.
*
*/
#ifndef HABANALABS_H_
#define HABANALABS_H_
#include <linux/types.h>
#include <linux/ioctl.h>
/*
* Defines that are asic-specific but constitutes as ABI between kernel driver
* and userspace
*/
#define GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START 0x8000 /* 32KB */
/*
* Queue Numbering
*
* The external queues (DMA channels + CPU) MUST be before the internal queues
* and each group (DMA channels + CPU and internal) must be contiguous inside
* itself but there can be a gap between the two groups (although not
* recommended)
*/
enum goya_queue_id {
GOYA_QUEUE_ID_DMA_0 = 0,
GOYA_QUEUE_ID_DMA_1,
GOYA_QUEUE_ID_DMA_2,
GOYA_QUEUE_ID_DMA_3,
GOYA_QUEUE_ID_DMA_4,
GOYA_QUEUE_ID_CPU_PQ,
GOYA_QUEUE_ID_MME,
GOYA_QUEUE_ID_TPC0,
GOYA_QUEUE_ID_TPC1,
GOYA_QUEUE_ID_TPC2,
GOYA_QUEUE_ID_TPC3,
GOYA_QUEUE_ID_TPC4,
GOYA_QUEUE_ID_TPC5,
GOYA_QUEUE_ID_TPC6,
GOYA_QUEUE_ID_TPC7,
GOYA_QUEUE_ID_SIZE
};
/* Opcode to create a new command buffer */
#define HL_CB_OP_CREATE 0
/* Opcode to destroy previously created command buffer */
#define HL_CB_OP_DESTROY 1
struct hl_cb_in {
/* Handle of CB or 0 if we want to create one */
__u64 cb_handle;
/* HL_CB_OP_* */
__u32 op;
/* Size of CB. Minimum requested size must be PAGE_SIZE */
__u32 cb_size;
/* Context ID - Currently not in use */
__u32 ctx_id;
__u32 pad;
};
struct hl_cb_out {
/* Handle of CB */
__u64 cb_handle;
};
union hl_cb_args {
struct hl_cb_in in;
struct hl_cb_out out;
};
/*
* Command Buffer
* - Request a Command Buffer
* - Destroy a Command Buffer
*
* The command buffers are memory blocks that reside in DMA-able address
* space and are physically contiguous so they can be accessed by the device
* directly. They are allocated using the coherent DMA API.
*
* When creating a new CB, the IOCTL returns a handle of it, and the user-space
* process needs to use that handle to mmap the buffer so it can access them.
*
*/
#define HL_IOCTL_CB \
_IOWR('H', 0x02, union hl_cb_args)
#define HL_COMMAND_START 0x02
#define HL_COMMAND_END 0x03
#endif /* HABANALABS_H_ */
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