晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。   林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。   见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝)   既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。   南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。 sh-3ll

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc */

#ifndef IONIC_ABI_H
#define IONIC_ABI_H

#include <linux/types.h>

#define IONIC_ABI_VERSION	1

#define IONIC_EXPDB_64		1
#define IONIC_EXPDB_128		2
#define IONIC_EXPDB_256		4
#define IONIC_EXPDB_512		8

#define IONIC_EXPDB_SQ		1
#define IONIC_EXPDB_RQ		2

#define IONIC_CMB_ENABLE	1
#define IONIC_CMB_REQUIRE	2
#define IONIC_CMB_EXPDB		4
#define IONIC_CMB_WC		8
#define IONIC_CMB_UC		16

struct ionic_ctx_req {
	__u32 rsvd[2];
};

struct ionic_ctx_resp {
	__u32 rsvd;
	__u32 page_shift;

	__aligned_u64 dbell_offset;

	__u16 version;
	__u8 qp_opcodes;
	__u8 admin_opcodes;

	__u8 sq_qtype;
	__u8 rq_qtype;
	__u8 cq_qtype;
	__u8 admin_qtype;

	__u8 max_stride;
	__u8 max_spec;
	__u8 udma_count;
	__u8 expdb_mask;
	__u8 expdb_qtypes;

	__u8 rsvd2[3];
};

struct ionic_qdesc {
	__aligned_u64 addr;
	__u32 size;
	__u16 mask;
	__u8 depth_log2;
	__u8 stride_log2;
};

struct ionic_ah_resp {
	__u32 ahid;
	__u32 pad;
};

struct ionic_cq_req {
	struct ionic_qdesc cq[2];
	__u8 udma_mask;
	__u8 rsvd[7];
};

struct ionic_cq_resp {
	__u32 cqid[2];
	__u8 udma_mask;
	__u8 rsvd[7];
};

struct ionic_qp_req {
	struct ionic_qdesc sq;
	struct ionic_qdesc rq;
	__u8 sq_spec;
	__u8 rq_spec;
	__u8 sq_cmb;
	__u8 rq_cmb;
	__u8 udma_mask;
	__u8 rsvd[3];
};

struct ionic_qp_resp {
	__u32 qpid;
	__u8 sq_cmb;
	__u8 rq_cmb;
	__u8 udma_idx;
	__u8 rsvd[1];
	__aligned_u64 sq_cmb_offset;
	__aligned_u64 rq_cmb_offset;
};

struct ionic_srq_req {
	struct ionic_qdesc rq;
	__u8 rq_spec;
	__u8 rq_cmb;
	__u8 udma_mask;
	__u8 rsvd[5];
};

struct ionic_srq_resp {
	__u32 qpid;
	__u8 rq_cmb;
	__u8 udma_idx;
	__u8 rsvd[2];
	__aligned_u64 rq_cmb_offset;
};

#endif /* IONIC_ABI_H */