1 /* 2 * Freescale SEC (talitos) device register and descriptor header defines 3 * 4 * Copyright (c) 2006-2011 Freescale Semiconductor, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 */ 30 31 #define TALITOS_TIMEOUT 100000 32 #define TALITOS1_MAX_DATA_LEN 32768 33 #define TALITOS2_MAX_DATA_LEN 65535 34 35 #define DESC_TYPE(desc_hdr) ((be32_to_cpu(desc_hdr) >> 3) & 0x1f) 36 #define PRIMARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 28) & 0xf) 37 #define SECONDARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 16) & 0xf) 38 39 /* descriptor pointer entry */ 40 struct talitos_ptr { 41 union { 42 struct { /* SEC2 format */ 43 __be16 len; /* length */ 44 u8 j_extent; /* jump to sg link table and/or extent*/ 45 u8 eptr; /* extended address */ 46 }; 47 struct { /* SEC1 format */ 48 __be16 res; 49 __be16 len1; /* length */ 50 }; 51 }; 52 __be32 ptr; /* address */ 53 }; 54 55 static const struct talitos_ptr zero_entry; 56 57 /* descriptor */ 58 struct talitos_desc { 59 __be32 hdr; /* header high bits */ 60 union { 61 __be32 hdr_lo; /* header low bits */ 62 __be32 hdr1; /* header for SEC1 */ 63 }; 64 struct talitos_ptr ptr[7]; /* ptr/len pair array */ 65 __be32 next_desc; /* next descriptor (SEC1) */ 66 }; 67 68 #define TALITOS_DESC_SIZE (sizeof(struct talitos_desc) - sizeof(__be32)) 69 70 /** 71 * talitos_request - descriptor submission request 72 * @desc: descriptor pointer (kernel virtual) 73 * @dma_desc: descriptor's physical bus address 74 * @callback: whom to call when descriptor processing is done 75 * @context: caller context (optional) 76 */ 77 struct talitos_request { 78 struct talitos_desc *desc; 79 dma_addr_t dma_desc; 80 void (*callback) (struct device *dev, struct talitos_desc *desc, 81 void *context, int error); 82 void *context; 83 }; 84 85 /* per-channel fifo management */ 86 struct talitos_channel { 87 void __iomem *reg; 88 89 /* request fifo */ 90 struct talitos_request *fifo; 91 92 /* number of requests pending in channel h/w fifo */ 93 atomic_t submit_count ____cacheline_aligned; 94 95 /* request submission (head) lock */ 96 spinlock_t head_lock ____cacheline_aligned; 97 /* index to next free descriptor request */ 98 int head; 99 100 /* request release (tail) lock */ 101 spinlock_t tail_lock ____cacheline_aligned; 102 /* index to next in-progress/done descriptor request */ 103 int tail; 104 }; 105 106 struct talitos_private { 107 struct device *dev; 108 struct platform_device *ofdev; 109 void __iomem *reg; 110 void __iomem *reg_deu; 111 void __iomem *reg_aesu; 112 void __iomem *reg_mdeu; 113 void __iomem *reg_afeu; 114 void __iomem *reg_rngu; 115 void __iomem *reg_pkeu; 116 void __iomem *reg_keu; 117 void __iomem *reg_crcu; 118 int irq[2]; 119 120 /* SEC global registers lock */ 121 spinlock_t reg_lock ____cacheline_aligned; 122 123 /* SEC version geometry (from device tree node) */ 124 unsigned int num_channels; 125 unsigned int chfifo_len; 126 unsigned int exec_units; 127 unsigned int desc_types; 128 129 /* SEC Compatibility info */ 130 unsigned long features; 131 132 /* 133 * length of the request fifo 134 * fifo_len is chfifo_len rounded up to next power of 2 135 * so we can use bitwise ops to wrap 136 */ 137 unsigned int fifo_len; 138 139 struct talitos_channel *chan; 140 141 /* next channel to be assigned next incoming descriptor */ 142 atomic_t last_chan ____cacheline_aligned; 143 144 /* request callback tasklet */ 145 struct tasklet_struct done_task[2]; 146 147 /* list of registered algorithms */ 148 struct list_head alg_list; 149 150 /* hwrng device */ 151 struct hwrng rng; 152 bool rng_registered; 153 }; 154 155 extern int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc, 156 void (*callback)(struct device *dev, 157 struct talitos_desc *desc, 158 void *context, int error), 159 void *context); 160 161 /* .features flag */ 162 #define TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT 0x00000001 163 #define TALITOS_FTR_HW_AUTH_CHECK 0x00000002 164 #define TALITOS_FTR_SHA224_HWINIT 0x00000004 165 #define TALITOS_FTR_HMAC_OK 0x00000008 166 #define TALITOS_FTR_SEC1 0x00000010 167 168 /* 169 * If both CONFIG_CRYPTO_DEV_TALITOS1 and CONFIG_CRYPTO_DEV_TALITOS2 are 170 * defined, we check the features which are set according to the device tree. 171 * Otherwise, we answer true or false directly 172 */ 173 static inline bool has_ftr_sec1(struct talitos_private *priv) 174 { 175 #if defined(CONFIG_CRYPTO_DEV_TALITOS1) && defined(CONFIG_CRYPTO_DEV_TALITOS2) 176 return priv->features & TALITOS_FTR_SEC1 ? true : false; 177 #elif defined(CONFIG_CRYPTO_DEV_TALITOS1) 178 return true; 179 #else 180 return false; 181 #endif 182 } 183 184 /* 185 * TALITOS_xxx_LO addresses point to the low data bits (32-63) of the register 186 */ 187 188 #define ISR1_FORMAT(x) (((x) << 28) | ((x) << 16)) 189 #define ISR2_FORMAT(x) (((x) << 4) | (x)) 190 191 /* global register offset addresses */ 192 #define TALITOS_MCR 0x1030 /* master control register */ 193 #define TALITOS_MCR_RCA0 (1 << 15) /* remap channel 0 */ 194 #define TALITOS_MCR_RCA1 (1 << 14) /* remap channel 1 */ 195 #define TALITOS_MCR_RCA2 (1 << 13) /* remap channel 2 */ 196 #define TALITOS_MCR_RCA3 (1 << 12) /* remap channel 3 */ 197 #define TALITOS1_MCR_SWR 0x1000000 /* s/w reset */ 198 #define TALITOS2_MCR_SWR 0x1 /* s/w reset */ 199 #define TALITOS_MCR_LO 0x1034 200 #define TALITOS_IMR 0x1008 /* interrupt mask register */ 201 /* enable channel IRQs */ 202 #define TALITOS1_IMR_INIT ISR1_FORMAT(0xf) 203 #define TALITOS1_IMR_DONE ISR1_FORMAT(0x5) /* done IRQs */ 204 /* enable channel IRQs */ 205 #define TALITOS2_IMR_INIT (ISR2_FORMAT(0xf) | 0x10000) 206 #define TALITOS2_IMR_DONE ISR1_FORMAT(0x5) /* done IRQs */ 207 #define TALITOS_IMR_LO 0x100C 208 #define TALITOS1_IMR_LO_INIT 0x2000000 /* allow RNGU error IRQs */ 209 #define TALITOS2_IMR_LO_INIT 0x20000 /* allow RNGU error IRQs */ 210 #define TALITOS_ISR 0x1010 /* interrupt status register */ 211 #define TALITOS1_ISR_4CHERR ISR1_FORMAT(0xa) /* 4 ch errors mask */ 212 #define TALITOS1_ISR_4CHDONE ISR1_FORMAT(0x5) /* 4 ch done mask */ 213 #define TALITOS1_ISR_TEA_ERR 0x00000040 214 #define TALITOS2_ISR_4CHERR ISR2_FORMAT(0xa) /* 4 ch errors mask */ 215 #define TALITOS2_ISR_4CHDONE ISR2_FORMAT(0x5) /* 4 ch done mask */ 216 #define TALITOS2_ISR_CH_0_2_ERR ISR2_FORMAT(0x2) /* ch 0, 2 err mask */ 217 #define TALITOS2_ISR_CH_0_2_DONE ISR2_FORMAT(0x1) /* ch 0, 2 done mask */ 218 #define TALITOS2_ISR_CH_1_3_ERR ISR2_FORMAT(0x8) /* ch 1, 3 err mask */ 219 #define TALITOS2_ISR_CH_1_3_DONE ISR2_FORMAT(0x4) /* ch 1, 3 done mask */ 220 #define TALITOS_ISR_LO 0x1014 221 #define TALITOS_ICR 0x1018 /* interrupt clear register */ 222 #define TALITOS_ICR_LO 0x101C 223 224 /* channel register address stride */ 225 #define TALITOS_CH_BASE_OFFSET 0x1000 /* default channel map base */ 226 #define TALITOS1_CH_STRIDE 0x1000 227 #define TALITOS2_CH_STRIDE 0x100 228 229 /* channel configuration register */ 230 #define TALITOS_CCCR 0x8 231 #define TALITOS2_CCCR_CONT 0x2 /* channel continue on SEC2 */ 232 #define TALITOS2_CCCR_RESET 0x1 /* channel reset on SEC2 */ 233 #define TALITOS_CCCR_LO 0xc 234 #define TALITOS_CCCR_LO_IWSE 0x80 /* chan. ICCR writeback enab. */ 235 #define TALITOS_CCCR_LO_EAE 0x20 /* extended address enable */ 236 #define TALITOS_CCCR_LO_CDWE 0x10 /* chan. done writeback 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_CBC cpu_to_be32(0x00200000) 348 #define DESC_HDR_MODE0_AESU_CTR cpu_to_be32(0x00600000) 349 #define DESC_HDR_MODE0_DEU_CBC cpu_to_be32(0x00400000) 350 #define DESC_HDR_MODE0_DEU_3DES cpu_to_be32(0x00200000) 351 #define DESC_HDR_MODE0_MDEU_CONT cpu_to_be32(0x08000000) 352 #define DESC_HDR_MODE0_MDEU_INIT cpu_to_be32(0x01000000) 353 #define DESC_HDR_MODE0_MDEU_HMAC cpu_to_be32(0x00800000) 354 #define DESC_HDR_MODE0_MDEU_PAD cpu_to_be32(0x00400000) 355 #define DESC_HDR_MODE0_MDEU_SHA224 cpu_to_be32(0x00300000) 356 #define DESC_HDR_MODE0_MDEU_MD5 cpu_to_be32(0x00200000) 357 #define DESC_HDR_MODE0_MDEU_SHA256 cpu_to_be32(0x00100000) 358 #define DESC_HDR_MODE0_MDEU_SHA1 cpu_to_be32(0x00000000) 359 #define DESC_HDR_MODE0_MDEUB_SHA384 cpu_to_be32(0x00000000) 360 #define DESC_HDR_MODE0_MDEUB_SHA512 cpu_to_be32(0x00200000) 361 #define DESC_HDR_MODE0_MDEU_MD5_HMAC (DESC_HDR_MODE0_MDEU_MD5 | \ 362 DESC_HDR_MODE0_MDEU_HMAC) 363 #define DESC_HDR_MODE0_MDEU_SHA256_HMAC (DESC_HDR_MODE0_MDEU_SHA256 | \ 364 DESC_HDR_MODE0_MDEU_HMAC) 365 #define DESC_HDR_MODE0_MDEU_SHA1_HMAC (DESC_HDR_MODE0_MDEU_SHA1 | \ 366 DESC_HDR_MODE0_MDEU_HMAC) 367 368 /* secondary execution unit select (SEL1) */ 369 #define DESC_HDR_SEL1_MASK cpu_to_be32(0x000f0000) 370 #define DESC_HDR_SEL1_MDEUA cpu_to_be32(0x00030000) 371 #define DESC_HDR_SEL1_MDEUB cpu_to_be32(0x000b0000) 372 #define DESC_HDR_SEL1_CRCU cpu_to_be32(0x00080000) 373 374 /* secondary execution unit mode (MODE1) and derivatives */ 375 #define DESC_HDR_MODE1_MDEU_CICV cpu_to_be32(0x00004000) 376 #define DESC_HDR_MODE1_MDEU_INIT cpu_to_be32(0x00001000) 377 #define DESC_HDR_MODE1_MDEU_HMAC cpu_to_be32(0x00000800) 378 #define DESC_HDR_MODE1_MDEU_PAD cpu_to_be32(0x00000400) 379 #define DESC_HDR_MODE1_MDEU_SHA224 cpu_to_be32(0x00000300) 380 #define DESC_HDR_MODE1_MDEU_MD5 cpu_to_be32(0x00000200) 381 #define DESC_HDR_MODE1_MDEU_SHA256 cpu_to_be32(0x00000100) 382 #define DESC_HDR_MODE1_MDEU_SHA1 cpu_to_be32(0x00000000) 383 #define DESC_HDR_MODE1_MDEUB_SHA384 cpu_to_be32(0x00000000) 384 #define DESC_HDR_MODE1_MDEUB_SHA512 cpu_to_be32(0x00000200) 385 #define DESC_HDR_MODE1_MDEU_MD5_HMAC (DESC_HDR_MODE1_MDEU_MD5 | \ 386 DESC_HDR_MODE1_MDEU_HMAC) 387 #define DESC_HDR_MODE1_MDEU_SHA256_HMAC (DESC_HDR_MODE1_MDEU_SHA256 | \ 388 DESC_HDR_MODE1_MDEU_HMAC) 389 #define DESC_HDR_MODE1_MDEU_SHA1_HMAC (DESC_HDR_MODE1_MDEU_SHA1 | \ 390 DESC_HDR_MODE1_MDEU_HMAC) 391 #define DESC_HDR_MODE1_MDEU_SHA224_HMAC (DESC_HDR_MODE1_MDEU_SHA224 | \ 392 DESC_HDR_MODE1_MDEU_HMAC) 393 #define DESC_HDR_MODE1_MDEUB_SHA384_HMAC (DESC_HDR_MODE1_MDEUB_SHA384 | \ 394 DESC_HDR_MODE1_MDEU_HMAC) 395 #define DESC_HDR_MODE1_MDEUB_SHA512_HMAC (DESC_HDR_MODE1_MDEUB_SHA512 | \ 396 DESC_HDR_MODE1_MDEU_HMAC) 397 398 /* direction of overall data flow (DIR) */ 399 #define DESC_HDR_DIR_INBOUND cpu_to_be32(0x00000002) 400 401 /* request done notification (DN) */ 402 #define DESC_HDR_DONE_NOTIFY cpu_to_be32(0x00000001) 403 404 /* descriptor types */ 405 #define DESC_HDR_TYPE_AESU_CTR_NONSNOOP cpu_to_be32(0 << 3) 406 #define DESC_HDR_TYPE_IPSEC_ESP cpu_to_be32(1 << 3) 407 #define DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU cpu_to_be32(2 << 3) 408 #define DESC_HDR_TYPE_HMAC_SNOOP_NO_AFEU cpu_to_be32(4 << 3) 409 410 /* link table extent field bits */ 411 #define DESC_PTR_LNKTBL_JUMP 0x80 412 #define DESC_PTR_LNKTBL_RETURN 0x02 413 #define DESC_PTR_LNKTBL_NEXT 0x01 414