drivers/crypto/dpaa2_sec/hw/rta/header_cmd.h

   1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   2  *
   3  * Copyright 2008-2016 Freescale Semiconductor Inc.
   4  * Copyright 2016 NXP
   5  *
   6  */
   7
   8 #ifndef __RTA_HEADER_CMD_H__
   9 #define __RTA_HEADER_CMD_H__
  10
  11 extern enum rta_sec_era rta_sec_era;
  12
  13 /* Allowed job header flags for each SEC Era. */
  14 static const uint32_t job_header_flags[] = {
  15         DNR | TD | MTD | SHR | REO,
  16         DNR | TD | MTD | SHR | REO | RSMS,
  17         DNR | TD | MTD | SHR | REO | RSMS,
  18         DNR | TD | MTD | SHR | REO | RSMS,
  19         DNR | TD | MTD | SHR | REO | RSMS | EXT,
  20         DNR | TD | MTD | SHR | REO | RSMS | EXT,
  21         DNR | TD | MTD | SHR | REO | RSMS | EXT,
  22         DNR | TD | MTD | SHR | REO | EXT
  23 };
  24
  25 /* Allowed shared header flags for each SEC Era. */
  26 static const uint32_t shr_header_flags[] = {
  27         DNR | SC | PD,
  28         DNR | SC | PD | CIF,
  29         DNR | SC | PD | CIF,
  30         DNR | SC | PD | CIF | RIF,
  31         DNR | SC | PD | CIF | RIF,
  32         DNR | SC | PD | CIF | RIF,
  33         DNR | SC | PD | CIF | RIF,
  34         DNR | SC | PD | CIF | RIF
  35 };
  36
  37 static inline int
  38 rta_shr_header(struct program *program,
  39                enum rta_share_type share,
  40                unsigned int start_idx,
  41                uint32_t flags)
  42 {
  43         uint32_t opcode = CMD_SHARED_DESC_HDR;
  44         unsigned int start_pc = program->current_pc;
  45
  46         if (flags & ~shr_header_flags[rta_sec_era]) {
  47                 pr_err("SHR_DESC: Flag(s) not supported by SEC Era %d\n",
  48                        USER_SEC_ERA(rta_sec_era));
  49                 goto err;
  50         }
  51
  52         switch (share) {
  53         case SHR_ALWAYS:
  54                 opcode |= HDR_SHARE_ALWAYS;
  55                 break;
  56         case SHR_SERIAL:
  57                 opcode |= HDR_SHARE_SERIAL;
  58                 break;
  59         case SHR_NEVER:
  60                 /*
  61                  * opcode |= HDR_SHARE_NEVER;
  62                  * HDR_SHARE_NEVER is 0
  63                  */
  64                 break;
  65         case SHR_WAIT:
  66                 opcode |= HDR_SHARE_WAIT;
  67                 break;
  68         default:
  69                 pr_err("SHR_DESC: SHARE VALUE is not supported. SEC Program Line: %d\n",
  70                        program->current_pc);
  71                 goto err;
  72         }
  73
  74         opcode |= HDR_ONE;
  75         opcode |= (start_idx << HDR_START_IDX_SHIFT) & HDR_START_IDX_MASK;
  76
  77         if (flags & DNR)
  78                 opcode |= HDR_DNR;
  79         if (flags & CIF)
  80                 opcode |= HDR_CLEAR_IFIFO;
  81         if (flags & SC)
  82                 opcode |= HDR_SAVECTX;
  83         if (flags & PD)
  84                 opcode |= HDR_PROP_DNR;
  85         if (flags & RIF)
  86                 opcode |= HDR_RIF;
  87
  88         __rta_out32(program, opcode);
  89         program->current_instruction++;
  90
  91         if (program->current_instruction == 1)
  92                 program->shrhdr = program->buffer;
  93
  94         return (int)start_pc;
  95
  96  err:
  97         program->first_error_pc = start_pc;
  98         program->current_instruction++;
  99         return -EINVAL;
 100 }
 101
 102 static inline int
 103 rta_job_header(struct program *program,
 104                enum rta_share_type share,
 105                unsigned int start_idx,
 106                uint64_t shr_desc, uint32_t flags,
 107                uint32_t ext_flags)
 108 {
 109         uint32_t opcode = CMD_DESC_HDR;
 110         uint32_t hdr_ext = 0;
 111         unsigned int start_pc = program->current_pc;
 112
 113         if (flags & ~job_header_flags[rta_sec_era]) {
 114                 pr_err("JOB_DESC: Flag(s) not supported by SEC Era %d\n",
 115                        USER_SEC_ERA(rta_sec_era));
 116                 goto err;
 117         }
 118
 119         switch (share) {
 120         case SHR_ALWAYS:
 121                 opcode |= HDR_SHARE_ALWAYS;
 122                 break;
 123         case SHR_SERIAL:
 124                 opcode |= HDR_SHARE_SERIAL;
 125                 break;
 126         case SHR_NEVER:
 127                 /*
 128                  * opcode |= HDR_SHARE_NEVER;
 129                  * HDR_SHARE_NEVER is 0
 130                  */
 131                 break;
 132         case SHR_WAIT:
 133                 opcode |= HDR_SHARE_WAIT;
 134                 break;
 135         case SHR_DEFER:
 136                 opcode |= HDR_SHARE_DEFER;
 137                 break;
 138         default:
 139                 pr_err("JOB_DESC: SHARE VALUE is not supported. SEC Program Line: %d\n",
 140                        program->current_pc);
 141                 goto err;
 142         }
 143
 144         if ((flags & TD) && (flags & REO)) {
 145                 pr_err("JOB_DESC: REO flag not supported for trusted descriptors. SEC Program Line: %d\n",
 146                        program->current_pc);
 147                 goto err;
 148         }
 149
 150         if ((rta_sec_era < RTA_SEC_ERA_7) && (flags & MTD) && !(flags & TD)) {
 151                 pr_err("JOB_DESC: Trying to MTD a descriptor that is not a TD. SEC Program Line: %d\n",
 152                        program->current_pc);
 153                 goto err;
 154         }
 155
 156         if ((flags & EXT) && !(flags & SHR) && (start_idx < 2)) {
 157                 pr_err("JOB_DESC: Start index must be >= 2 in case of no SHR and EXT. SEC Program Line: %d\n",
 158                        program->current_pc);
 159                 goto err;
 160         }
 161
 162         opcode |= HDR_ONE;
 163         opcode |= ((start_idx << HDR_START_IDX_SHIFT) & HDR_START_IDX_MASK);
 164
 165         if (flags & EXT) {
 166                 opcode |= HDR_EXT;
 167
 168                 if (ext_flags & DSV) {
 169                         hdr_ext |= HDR_EXT_DSEL_VALID;
 170                         hdr_ext |= ext_flags & DSEL_MASK;
 171                 }
 172
 173                 if (ext_flags & FTD) {
 174                         if (rta_sec_era <= RTA_SEC_ERA_5) {
 175                                 pr_err("JOB_DESC: Fake trusted descriptor not supported by SEC Era %d\n",
 176                                        USER_SEC_ERA(rta_sec_era));
 177                                 goto err;
 178                         }
 179
 180                         hdr_ext |= HDR_EXT_FTD;
 181                 }
 182         }
 183         if (flags & RSMS)
 184                 opcode |= HDR_RSLS;
 185         if (flags & DNR)
 186                 opcode |= HDR_DNR;
 187         if (flags & TD)
 188                 opcode |= HDR_TRUSTED;
 189         if (flags & MTD)
 190                 opcode |= HDR_MAKE_TRUSTED;
 191         if (flags & REO)
 192                 opcode |= HDR_REVERSE;
 193         if (flags & SHR)
 194                 opcode |= HDR_SHARED;
 195
 196         __rta_out32(program, opcode);
 197         program->current_instruction++;
 198
 199         if (program->current_instruction == 1) {
 200                 program->jobhdr = program->buffer;
 201
 202                 if (opcode & HDR_SHARED)
 203                         __rta_out64(program, program->ps, shr_desc);
 204         }
 205
 206         if (flags & EXT)
 207                 __rta_out32(program, hdr_ext);
 208
 209         /* Note: descriptor length is set in program_finalize routine */
 210         return (int)start_pc;
 211
 212  err:
 213         program->first_error_pc = start_pc;
 214         program->current_instruction++;
 215         return -EINVAL;
 216 }
 217
 218 #endif /* __RTA_HEADER_CMD_H__ */