drivers/crypto/cavium/cpt/request_manager.h

   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
  20 union 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
  37 union opcode_info {
  38         u16 flags;
  39         struct {
  40                 u8 major;
  41                 u8 minor;
  42         } s;
  43 };
  44
  45 struct cptvf_request {
  46         union opcode_info opcode;
  47         u16 param1;
  48         u16 param2;
  49         u16 dlen;
  50 };
  51
  52 struct buf_ptr {
  53         u8 *vptr;
  54         dma_addr_t dma_addr;
  55         u16 size;
  56 };
  57
  58 struct 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
  74 struct 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
  90 struct 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  */
 114 union vq_cmd_word0 {
 115         u64 u64;
 116         struct {
 117                 __be16 opcode;
 118                 __be16 param1;
 119                 __be16 param2;
 120                 __be16 dlen;
 121         } s;
 122 };
 123
 124 union 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
 137 struct cpt_vq_command {
 138         union vq_cmd_word0 cmd;
 139         u64 dptr;
 140         u64 rptr;
 141         union vq_cmd_word3 cptr;
 142 };
 143
 144 void vq_post_process(struct cpt_vf *cptvf, u32 qno);
 145 int process_request(struct cpt_vf *cptvf, struct cpt_request_info *req);
 146 #endif /* __REQUEST_MANAGER_H */