1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Copyright (C) 2016 Cavium, Inc.
  4 */
  5
  6#ifndef __REQUEST_MANAGER_H
  7#define __REQUEST_MANAGER_H
  8
  9#include "cpt_common.h"
 10
 11#define TIME_IN_RESET_COUNT  5
 12#define COMPLETION_CODE_SIZE 8
 13#define COMPLETION_CODE_INIT 0
 14#define PENDING_THOLD  100
 15#define MAX_SG_IN_CNT 12
 16#define MAX_SG_OUT_CNT 13
 17#define SG_LIST_HDR_SIZE  8
 18#define MAX_BUF_CNT	16
 19
 20union ctrl_info {
 21	u32 flags;
 22	struct {
 23#if defined(__BIG_ENDIAN_BITFIELD)
 24		u32 reserved0:26;
 25		u32 grp:3; /* Group bits */
 26		u32 dma_mode:2; /* DMA mode */
 27		u32 se_req:1;/* To SE core */
 28#else
 29		u32 se_req:1; /* To SE core */
 30		u32 dma_mode:2; /* DMA mode */
 31		u32 grp:3; /* Group bits */
 32		u32 reserved0:26;
 33#endif
 34	} s;
 35};
 36
 37union opcode_info {
 38	u16 flags;
 39	struct {
 40		u8 major;
 41		u8 minor;
 42	} s;
 43};
 44
 45struct cptvf_request {
 46	union opcode_info opcode;
 47	u16 param1;
 48	u16 param2;
 49	u16 dlen;
 50};
 51
 52struct buf_ptr {
 53	u8 *vptr;
 54	dma_addr_t dma_addr;
 55	u16 size;
 56};
 57
 58struct cpt_request_info {
 59	u8 incnt; /* Number of input buffers */
 60	u8 outcnt; /* Number of output buffers */
 61	u16 rlen; /* Output length */
 62	union ctrl_info ctrl; /* User control information */
 63	struct cptvf_request req; /* Request Information (Core specific) */
 64
 65	bool may_sleep;
 66
 67	struct buf_ptr in[MAX_BUF_CNT];
 68	struct buf_ptr out[MAX_BUF_CNT];
 69
 70	void (*callback)(int, void *); /* Kernel ASYNC request callabck */
 71	void *callback_arg; /* Kernel ASYNC request callabck arg */
 72};
 73
 74struct sglist_component {
 75	union {
 76		u64 len;
 77		struct {
 78			__be16 len0;
 79			__be16 len1;
 80			__be16 len2;
 81			__be16 len3;
 82		} s;
 83	} u;
 84	__be64 ptr0;
 85	__be64 ptr1;
 86	__be64 ptr2;
 87	__be64 ptr3;
 88};
 89
 90struct cpt_info_buffer {
 91	struct cpt_vf *cptvf;
 92	unsigned long time_in;
 93	u8 extra_time;
 94
 95	struct cpt_request_info *req;
 96	dma_addr_t dptr_baddr;
 97	u32 dlen;
 98	dma_addr_t rptr_baddr;
 99	dma_addr_t comp_baddr;
100	u8 *in_buffer;
101	u8 *out_buffer;
102	u8 *gather_components;
103	u8 *scatter_components;
104
105	struct pending_entry *pentry;
106	volatile u64 *completion_addr;
107	volatile u64 *alternate_caddr;
108};
109
110/*
111 * CPT_INST_S software command definitions
112 * Words EI (0-3)
113 */
114union vq_cmd_word0 {
115	u64 u64;
116	struct {
117		__be16 opcode;
118		__be16 param1;
119		__be16 param2;
120		__be16 dlen;
121	} s;
122};
123
124union vq_cmd_word3 {
125	u64 u64;
126	struct {
127#if defined(__BIG_ENDIAN_BITFIELD)
128		u64 grp:3;
129		u64 cptr:61;
130#else
131		u64 cptr:61;
132		u64 grp:3;
133#endif
134	} s;
135};
136
137struct cpt_vq_command {
138	union vq_cmd_word0 cmd;
139	u64 dptr;
140	u64 rptr;
141	union vq_cmd_word3 cptr;
142};
143
144void vq_post_process(struct cpt_vf *cptvf, u32 qno);
145int process_request(struct cpt_vf *cptvf, struct cpt_request_info *req);
146#endif /* __REQUEST_MANAGER_H */