1 /* SPDX-License-Identifier: BSD-3-Clause */ 2 /* 3 * Freescale SEC (talitos) device register and descriptor header defines 4 * 5 * Copyright (c) 2006-2011 Freescale Semiconductor, Inc. 6 */ 7 8 #define TALITOS_TIMEOUT 100000 9 #define TALITOS1_MAX_DATA_LEN 32768 10 #define TALITOS2_MAX_DATA_LEN 65535 11 12 #define DESC_TYPE(desc_hdr) ((be32_to_cpu(desc_hdr) >> 3) & 0x1f) 13 #define PRIMARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 28) & 0xf) 14 #define SECONDARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 16) & 0xf) 15 16 /* descriptor pointer entry */ 17 struct talitos_ptr { 18 union { 19 struct { /* SEC2 format */ 20 __be16 len; /* length */ 21 u8 j_extent; /* jump to sg link table and/or extent*/ 22 u8 eptr; /* extended address */ 23 }; 24 struct { /* SEC1 format */ 25 __be16 res; 26 __be16 len1; /* length */ 27 }; 28 }; 29 __be32 ptr; /* address */ 30 }; 31 32 /* descriptor */ 33 struct talitos_desc { 34 __be32 hdr; /* header high bits */ 35 union { 36 __be32 hdr_lo; /* header low bits */ 37 __be32 hdr1; /* header for SEC1 */ 38 }; 39 struct talitos_ptr ptr[7]; /* ptr/len pair array */ 40 __be32 next_desc; /* next descriptor (SEC1) */ 41 }; 42 43 #define TALITOS_DESC_SIZE (sizeof(struct talitos_desc) - sizeof(__be32)) 44 45 /* 46 * talitos_edesc - s/w-extended descriptor 47 * @src_nents: number of segments in input scatterlist 48 * @dst_nents: number of segments in output scatterlist 49 * @iv_dma: dma address of iv for checking continuity and link table 50 * @dma_len: length of dma mapped link_tbl space 51 * @dma_link_tbl: bus physical address of link_tbl/buf 52 * @desc: h/w descriptor 53 * @link_tbl: input and output h/w link tables (if {src,dst}_nents > 1) (SEC2) 54 * @buf: input and output buffeur (if {src,dst}_nents > 1) (SEC1) 55 * 56 * if decrypting (with authcheck), or either one of src_nents or dst_nents 57 * is greater than 1, an integrity check value is concatenated to the end 58 * of link_tbl data 59 */ 60 struct talitos_edesc { 61 int src_nents; 62 int dst_nents; 63 dma_addr_t iv_dma; 64 int dma_len; 65 dma_addr_t dma_link_tbl; 66 struct talitos_desc desc; 67 union { 68 DECLARE_FLEX_ARRAY(struct talitos_ptr, link_tbl); 69 DECLARE_FLEX_ARRAY(u8, buf); 70 }; 71 }; 72 73 /** 74 * talitos_request - descriptor submission request 75 * @desc: descriptor pointer (kernel virtual) 76 * @dma_desc: descriptor's physical bus address 77 * @callback: whom to call when descriptor processing is done 78 * @context: caller context (optional) 79 */ 80 struct talitos_request { 81 struct talitos_desc *desc; 82 dma_addr_t dma_desc; 83 void (*callback) (struct device *dev, struct talitos_desc *desc, 84 void *context, int error); 85 void *context; 86 }; 87 88 /* per-channel fifo management */ 89 struct talitos_channel { 90 void __iomem *reg; 91 92 /* request fifo */ 93 struct talitos_request *fifo; 94 95 /* number of requests pending in channel h/w fifo */ 96 atomic_t submit_count ____cacheline_aligned; 97 98 /* request submission (head) lock */ 99 spinlock_t head_lock ____cacheline_aligned; 100 /* index to next free descriptor request */ 101 int head; 102 103 /* request release (tail) lock */ 104 spinlock_t tail_lock ____cacheline_aligned; 105 /* index to next in-progress/done descriptor request */ 106 int tail; 107 }; 108 109 struct talitos_private { 110 struct device *dev; 111 struct platform_device *ofdev; 112 void __iomem *reg; 113 void __iomem *reg_deu; 114 void __iomem *reg_aesu; 115 void __iomem *reg_mdeu; 116 void __iomem *reg_afeu; 117 void __iomem *reg_rngu; 118 void __iomem *reg_pkeu; 119 void __iomem *reg_keu; 120 void __iomem *reg_crcu; 121 int irq[2]; 122 123 /* SEC global registers lock */ 124 spinlock_t reg_lock ____cacheline_aligned; 125 126 /* SEC version geometry (from device tree node) */ 127 unsigned int num_channels; 128 unsigned int chfifo_len; 129 unsigned int exec_units; 130 unsigned int desc_types; 131 132 /* SEC Compatibility info */ 133 unsigned long features; 134 135 /* 136 * length of the request fifo 137 * fifo_len is chfifo_len rounded up to next power of 2 138 * so we can use bitwise ops to wrap 139 */ 140 unsigned int fifo_len; 141 142 struct talitos_channel *chan; 143 144 /* next channel to be assigned next incoming descriptor */ 145 atomic_t last_chan ____cacheline_aligned; 146 147 /* request callback tasklet */ 148 struct tasklet_struct done_task[2]; 149 150 /* list of registered algorithms */ 151 struct list_head alg_list; 152 153 /* hwrng device */ 154 struct hwrng rng; 155 bool rng_registered; 156 }; 157 158 /* .features flag */ 159 #define TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT 0x00000001 160 #define TALITOS_FTR_HW_AUTH_CHECK 0x00000002 161 #define TALITOS_FTR_SHA224_HWINIT 0x00000004 162 #define TALITOS_FTR_HMAC_OK 0x00000008 163 #define TALITOS_FTR_SEC1 0x00000010 164 165 /* 166 * If both CONFIG_CRYPTO_DEV_TALITOS1 and CONFIG_CRYPTO_DEV_TALITOS2 are 167 * defined, we check the features which are set according to the device tree. 168 * Otherwise, we answer true or false directly 169 */ 170 static inline bool has_ftr_sec1(struct talitos_private *priv) 171 { 172 if (IS_ENABLED(CONFIG_CRYPTO_DEV_TALITOS1) && 173 IS_ENABLED(CONFIG_CRYPTO_DEV_TALITOS2)) 174 return priv->features & TALITOS_FTR_SEC1; 175 176 return IS_ENABLED(CONFIG_CRYPTO_DEV_TALITOS1); 177 } 178 179 /* 180 * TALITOS_xxx_LO addresses point to the low data bits (32-63) of the register 181 */ 182 183 #define ISR1_FORMAT(x) (((x) << 28) | ((x) << 16)) 184 #define ISR2_FORMAT(x) (((x) << 4) | (x)) 185 186 /* global register offset addresses */ 187 #define TALITOS_MCR 0x1030 /* master control register */ 188 #define TALITOS_MCR_RCA0 (1 << 15) /* remap channel 0 */ 189 #define TALITOS_MCR_RCA1 (1 << 14) /* remap channel 1 */ 190 #define TALITOS_MCR_RCA2 (1 << 13) /* remap channel 2 */ 191 #define TALITOS_MCR_RCA3 (1 << 12) /* remap channel 3 */ 192 #define TALITOS1_MCR_SWR 0x1000000 /* s/w reset */ 193 #define TALITOS2_MCR_SWR 0x1 /* s/w reset */ 194 #define TALITOS_MCR_LO 0x1034 195 #define TALITOS_IMR 0x1008 /* interrupt mask register */ 196 /* enable channel IRQs */ 197 #define TALITOS1_IMR_INIT ISR1_FORMAT(0xf) 198 #define TALITOS1_IMR_DONE ISR1_FORMAT(0x5) /* done IRQs */ 199 /* enable channel IRQs */ 200 #define TALITOS2_IMR_INIT (ISR2_FORMAT(0xf) | 0x10000) 201 #define TALITOS2_IMR_DONE ISR1_FORMAT(0x5) /* done IRQs */ 202 #define TALITOS_IMR_LO 0x100C 203 #define TALITOS1_IMR_LO_INIT 0x2000000 /* allow RNGU error IRQs */ 204 #define TALITOS2_IMR_LO_INIT 0x20000 /* allow RNGU error IRQs */ 205 #define TALITOS_ISR 0x1010 /* interrupt status register */ 206 #define TALITOS1_ISR_4CHERR ISR1_FORMAT(0xa) /* 4 ch errors mask */ 207 #define TALITOS1_ISR_4CHDONE ISR1_FORMAT(0x5) /* 4 ch done mask */ 208 #define TALITOS1_ISR_CH_0_ERR (2 << 28) /* ch 0 errors mask */ 209 #define TALITOS1_ISR_CH_0_DONE (1 << 28) /* ch 0 done mask */ 210 #define TALITOS1_ISR_TEA_ERR 0x00000040 211 #define TALITOS2_ISR_4CHERR ISR2_FORMAT(0xa) /* 4 ch errors mask */ 212 #define TALITOS2_ISR_4CHDONE ISR2_FORMAT(0x5) /* 4 ch done mask */ 213 #define TALITOS2_ISR_CH_0_ERR 2 /* ch 0 errors mask */ 214 #define TALITOS2_ISR_CH_0_DONE 1 /* ch 0 done mask */ 215 #define TALITOS2_ISR_CH_0_2_ERR ISR2_FORMAT(0x2) /* ch 0, 2 err mask */ 216 #define TALITOS2_ISR_CH_0_2_DONE ISR2_FORMAT(0x1) /* ch 0, 2 done mask */ 217 #define TALITOS2_ISR_CH_1_3_ERR ISR2_FORMAT(0x8) /* ch 1, 3 err mask */ 218 #define TALITOS2_ISR_CH_1_3_DONE ISR2_FORMAT(0x4) /* ch 1, 3 done mask */ 219 #define TALITOS_ISR_LO 0x1014 220 #define TALITOS_ICR 0x1018 /* interrupt clear register */ 221 #define TALITOS_ICR_LO 0x101C 222 223 /* channel register address stride */ 224 #define TALITOS_CH_BASE_OFFSET 0x1000 /* default channel map base */ 225 #define TALITOS1_CH_STRIDE 0x1000 226 #define TALITOS2_CH_STRIDE 0x100 227 228 /* channel configuration register */ 229 #define TALITOS_CCCR 0x8 230 #define TALITOS2_CCCR_CONT 0x2 /* channel continue on SEC2 */ 231 #define TALITOS2_CCCR_RESET 0x1 /* channel reset on SEC2 */ 232 #define TALITOS_CCCR_LO 0xc 233 #define TALITOS_CCCR_LO_IWSE 0x80 /* chan. ICCR writeback enab. */ 234 #define TALITOS_CCCR_LO_EAE 0x20 /* extended address enable */ 235 #define TALITOS_CCCR_LO_CDWE 0x10 /* chan. done writeback enab. */ 236 #define TALITOS_CCCR_LO_NE 0x8 /* fetch next descriptor enab. */ 237 #define TALITOS_CCCR_LO_NT 0x4 /* notification type */ 238 #define TALITOS_CCCR_LO_CDIE 0x2 /* channel done IRQ enable */ 239 #define TALITOS1_CCCR_LO_RESET 0x1 /* channel reset on SEC1 */ 240 241 /* CCPSR: channel pointer status register */ 242 #define TALITOS_CCPSR 0x10 243 #define TALITOS_CCPSR_LO 0x14 244 #define TALITOS_CCPSR_LO_DOF 0x8000 /* double FF write oflow error */ 245 #define TALITOS_CCPSR_LO_SOF 0x4000 /* single FF write oflow error */ 246 #define TALITOS_CCPSR_LO_MDTE 0x2000 /* master data transfer error */ 247 #define TALITOS_CCPSR_LO_SGDLZ 0x1000 /* s/g data len zero error */ 248 #define TALITOS_CCPSR_LO_FPZ 0x0800 /* fetch ptr zero error */ 249 #define TALITOS_CCPSR_LO_IDH 0x0400 /* illegal desc hdr error */ 250 #define TALITOS_CCPSR_LO_IEU 0x0200 /* invalid EU error */ 251 #define TALITOS_CCPSR_LO_EU 0x0100 /* EU error detected */ 252 #define TALITOS_CCPSR_LO_GB 0x0080 /* gather boundary error */ 253 #define TALITOS_CCPSR_LO_GRL 0x0040 /* gather return/length error */ 254 #define TALITOS_CCPSR_LO_SB 0x0020 /* scatter boundary error */ 255 #define TALITOS_CCPSR_LO_SRL 0x0010 /* scatter return/length error */ 256 257 /* channel fetch fifo register */ 258 #define TALITOS_FF 0x48 259 #define TALITOS_FF_LO 0x4c 260 261 /* current descriptor pointer register */ 262 #define TALITOS_CDPR 0x40 263 #define TALITOS_CDPR_LO 0x44 264 265 /* descriptor buffer register */ 266 #define TALITOS_DESCBUF 0x80 267 #define TALITOS_DESCBUF_LO 0x84 268 269 /* gather link table */ 270 #define TALITOS_GATHER 0xc0 271 #define TALITOS_GATHER_LO 0xc4 272 273 /* scatter link table */ 274 #define TALITOS_SCATTER 0xe0 275 #define TALITOS_SCATTER_LO 0xe4 276 277 /* execution unit registers base */ 278 #define TALITOS2_DEU 0x2000 279 #define TALITOS2_AESU 0x4000 280 #define TALITOS2_MDEU 0x6000 281 #define TALITOS2_AFEU 0x8000 282 #define TALITOS2_RNGU 0xa000 283 #define TALITOS2_PKEU 0xc000 284 #define TALITOS2_KEU 0xe000 285 #define TALITOS2_CRCU 0xf000 286 287 #define TALITOS12_AESU 0x4000 288 #define TALITOS12_DEU 0x5000 289 #define TALITOS12_MDEU 0x6000 290 291 #define TALITOS10_AFEU 0x8000 292 #define TALITOS10_DEU 0xa000 293 #define TALITOS10_MDEU 0xc000 294 #define TALITOS10_RNGU 0xe000 295 #define TALITOS10_PKEU 0x10000 296 #define TALITOS10_AESU 0x12000 297 298 /* execution unit interrupt status registers */ 299 #define TALITOS_EUDSR 0x10 /* data size */ 300 #define TALITOS_EUDSR_LO 0x14 301 #define TALITOS_EURCR 0x18 /* reset control*/ 302 #define TALITOS_EURCR_LO 0x1c 303 #define TALITOS_EUSR 0x28 /* rng status */ 304 #define TALITOS_EUSR_LO 0x2c 305 #define TALITOS_EUISR 0x30 306 #define TALITOS_EUISR_LO 0x34 307 #define TALITOS_EUICR 0x38 /* int. control */ 308 #define TALITOS_EUICR_LO 0x3c 309 #define TALITOS_EU_FIFO 0x800 /* output FIFO */ 310 #define TALITOS_EU_FIFO_LO 0x804 /* output FIFO */ 311 /* DES unit */ 312 #define TALITOS1_DEUICR_KPE 0x00200000 /* Key Parity Error */ 313 /* message digest unit */ 314 #define TALITOS_MDEUICR_LO_ICE 0x4000 /* integrity check IRQ enable */ 315 /* random number unit */ 316 #define TALITOS_RNGUSR_LO_RD 0x1 /* reset done */ 317 #define TALITOS_RNGUSR_LO_OFL 0xff0000/* output FIFO length */ 318 #define TALITOS_RNGURCR_LO_SR 0x1 /* software reset */ 319 320 #define TALITOS_MDEU_CONTEXT_SIZE_MD5_SHA1_SHA256 0x28 321 #define TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512 0x48 322 323 /* 324 * talitos descriptor header (hdr) bits 325 */ 326 327 /* written back when done */ 328 #define DESC_HDR_DONE cpu_to_be32(0xff000000) 329 #define DESC_HDR_LO_ICCR1_MASK cpu_to_be32(0x00180000) 330 #define DESC_HDR_LO_ICCR1_PASS cpu_to_be32(0x00080000) 331 #define DESC_HDR_LO_ICCR1_FAIL cpu_to_be32(0x00100000) 332 333 /* primary execution unit select */ 334 #define DESC_HDR_SEL0_MASK cpu_to_be32(0xf0000000) 335 #define DESC_HDR_SEL0_AFEU cpu_to_be32(0x10000000) 336 #define DESC_HDR_SEL0_DEU cpu_to_be32(0x20000000) 337 #define DESC_HDR_SEL0_MDEUA cpu_to_be32(0x30000000) 338 #define DESC_HDR_SEL0_MDEUB cpu_to_be32(0xb0000000) 339 #define DESC_HDR_SEL0_RNG cpu_to_be32(0x40000000) 340 #define DESC_HDR_SEL0_PKEU cpu_to_be32(0x50000000) 341 #define DESC_HDR_SEL0_AESU cpu_to_be32(0x60000000) 342 #define DESC_HDR_SEL0_KEU cpu_to_be32(0x70000000) 343 #define DESC_HDR_SEL0_CRCU cpu_to_be32(0x80000000) 344 345 /* primary execution unit mode (MODE0) and derivatives */ 346 #define DESC_HDR_MODE0_ENCRYPT cpu_to_be32(0x00100000) 347 #define DESC_HDR_MODE0_AESU_MASK cpu_to_be32(0x00600000) 348 #define DESC_HDR_MODE0_AESU_CBC cpu_to_be32(0x00200000) 349 #define DESC_HDR_MODE0_AESU_CTR cpu_to_be32(0x00600000) 350 #define DESC_HDR_MODE0_DEU_CBC cpu_to_be32(0x00400000) 351 #define DESC_HDR_MODE0_DEU_3DES cpu_to_be32(0x00200000) 352 #define DESC_HDR_MODE0_MDEU_CONT cpu_to_be32(0x08000000) 353 #define DESC_HDR_MODE0_MDEU_INIT cpu_to_be32(0x01000000) 354 #define DESC_HDR_MODE0_MDEU_HMAC cpu_to_be32(0x00800000) 355 #define DESC_HDR_MODE0_MDEU_PAD cpu_to_be32(0x00400000) 356 #define DESC_HDR_MODE0_MDEU_SHA224 cpu_to_be32(0x00300000) 357 #define DESC_HDR_MODE0_MDEU_MD5 cpu_to_be32(0x00200000) 358 #define DESC_HDR_MODE0_MDEU_SHA256 cpu_to_be32(0x00100000) 359 #define DESC_HDR_MODE0_MDEU_SHA1 cpu_to_be32(0x00000000) 360 #define DESC_HDR_MODE0_MDEUB_SHA384 cpu_to_be32(0x00000000) 361 #define DESC_HDR_MODE0_MDEUB_SHA512 cpu_to_be32(0x00200000) 362 #define DESC_HDR_MODE0_MDEU_MD5_HMAC (DESC_HDR_MODE0_MDEU_MD5 | \ 363 DESC_HDR_MODE0_MDEU_HMAC) 364 #define DESC_HDR_MODE0_MDEU_SHA256_HMAC (DESC_HDR_MODE0_MDEU_SHA256 | \ 365 DESC_HDR_MODE0_MDEU_HMAC) 366 #define DESC_HDR_MODE0_MDEU_SHA1_HMAC (DESC_HDR_MODE0_MDEU_SHA1 | \ 367 DESC_HDR_MODE0_MDEU_HMAC) 368 369 /* secondary execution unit select (SEL1) */ 370 #define DESC_HDR_SEL1_MASK cpu_to_be32(0x000f0000) 371 #define DESC_HDR_SEL1_MDEUA cpu_to_be32(0x00030000) 372 #define DESC_HDR_SEL1_MDEUB cpu_to_be32(0x000b0000) 373 #define DESC_HDR_SEL1_CRCU cpu_to_be32(0x00080000) 374 375 /* secondary execution unit mode (MODE1) and derivatives */ 376 #define DESC_HDR_MODE1_MDEU_CICV cpu_to_be32(0x00004000) 377 #define DESC_HDR_MODE1_MDEU_INIT cpu_to_be32(0x00001000) 378 #define DESC_HDR_MODE1_MDEU_HMAC cpu_to_be32(0x00000800) 379 #define DESC_HDR_MODE1_MDEU_PAD cpu_to_be32(0x00000400) 380 #define DESC_HDR_MODE1_MDEU_SHA224 cpu_to_be32(0x00000300) 381 #define DESC_HDR_MODE1_MDEU_MD5 cpu_to_be32(0x00000200) 382 #define DESC_HDR_MODE1_MDEU_SHA256 cpu_to_be32(0x00000100) 383 #define DESC_HDR_MODE1_MDEU_SHA1 cpu_to_be32(0x00000000) 384 #define DESC_HDR_MODE1_MDEUB_SHA384 cpu_to_be32(0x00000000) 385 #define DESC_HDR_MODE1_MDEUB_SHA512 cpu_to_be32(0x00000200) 386 #define DESC_HDR_MODE1_MDEU_MD5_HMAC (DESC_HDR_MODE1_MDEU_MD5 | \ 387 DESC_HDR_MODE1_MDEU_HMAC) 388 #define DESC_HDR_MODE1_MDEU_SHA256_HMAC (DESC_HDR_MODE1_MDEU_SHA256 | \ 389 DESC_HDR_MODE1_MDEU_HMAC) 390 #define DESC_HDR_MODE1_MDEU_SHA1_HMAC (DESC_HDR_MODE1_MDEU_SHA1 | \ 391 DESC_HDR_MODE1_MDEU_HMAC) 392 #define DESC_HDR_MODE1_MDEU_SHA224_HMAC (DESC_HDR_MODE1_MDEU_SHA224 | \ 393 DESC_HDR_MODE1_MDEU_HMAC) 394 #define DESC_HDR_MODE1_MDEUB_SHA384_HMAC (DESC_HDR_MODE1_MDEUB_SHA384 | \ 395 DESC_HDR_MODE1_MDEU_HMAC) 396 #define DESC_HDR_MODE1_MDEUB_SHA512_HMAC (DESC_HDR_MODE1_MDEUB_SHA512 | \ 397 DESC_HDR_MODE1_MDEU_HMAC) 398 399 /* direction of overall data flow (DIR) */ 400 #define DESC_HDR_DIR_INBOUND cpu_to_be32(0x00000002) 401 402 /* request done notification (DN) */ 403 #define DESC_HDR_DONE_NOTIFY cpu_to_be32(0x00000001) 404 405 /* descriptor types */ 406 #define DESC_HDR_TYPE_AESU_CTR_NONSNOOP cpu_to_be32(0 << 3) 407 #define DESC_HDR_TYPE_IPSEC_ESP cpu_to_be32(1 << 3) 408 #define DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU cpu_to_be32(2 << 3) 409 #define DESC_HDR_TYPE_HMAC_SNOOP_NO_AFEU cpu_to_be32(4 << 3) 410 411 /* link table extent field bits */ 412 #define DESC_PTR_LNKTBL_JUMP 0x80 413 #define DESC_PTR_LNKTBL_RET 0x02 414 #define DESC_PTR_LNKTBL_NEXT 0x01 415