David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1 | /* n2_core.c: Niagara2 Stream Processing Unit (SPU) crypto support. |
| 2 | * |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 3 | * Copyright (C) 2010, 2011 David S. Miller <davem@davemloft.net> |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 7 | |
| 8 | #include <linux/kernel.h> |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/of.h> |
| 11 | #include <linux/of_device.h> |
| 12 | #include <linux/cpumask.h> |
| 13 | #include <linux/slab.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/crypto.h> |
| 16 | #include <crypto/md5.h> |
| 17 | #include <crypto/sha.h> |
| 18 | #include <crypto/aes.h> |
| 19 | #include <crypto/des.h> |
| 20 | #include <linux/mutex.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/sched.h> |
| 23 | |
| 24 | #include <crypto/internal/hash.h> |
| 25 | #include <crypto/scatterwalk.h> |
| 26 | #include <crypto/algapi.h> |
| 27 | |
| 28 | #include <asm/hypervisor.h> |
| 29 | #include <asm/mdesc.h> |
| 30 | |
| 31 | #include "n2_core.h" |
| 32 | |
| 33 | #define DRV_MODULE_NAME "n2_crypto" |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 34 | #define DRV_MODULE_VERSION "0.2" |
| 35 | #define DRV_MODULE_RELDATE "July 28, 2011" |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 36 | |
LABBE Corentin | 5082687 | 2015-10-14 21:15:13 +0200 | [diff] [blame] | 37 | static const char version[] = |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 38 | DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; |
| 39 | |
| 40 | MODULE_AUTHOR("David S. Miller (davem@davemloft.net)"); |
| 41 | MODULE_DESCRIPTION("Niagara2 Crypto driver"); |
| 42 | MODULE_LICENSE("GPL"); |
| 43 | MODULE_VERSION(DRV_MODULE_VERSION); |
| 44 | |
David S. Miller | 1080362 | 2012-09-15 09:06:30 -0700 | [diff] [blame] | 45 | #define N2_CRA_PRIORITY 200 |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 46 | |
| 47 | static DEFINE_MUTEX(spu_lock); |
| 48 | |
| 49 | struct spu_queue { |
| 50 | cpumask_t sharing; |
| 51 | unsigned long qhandle; |
| 52 | |
| 53 | spinlock_t lock; |
| 54 | u8 q_type; |
| 55 | void *q; |
| 56 | unsigned long head; |
| 57 | unsigned long tail; |
| 58 | struct list_head jobs; |
| 59 | |
| 60 | unsigned long devino; |
| 61 | |
| 62 | char irq_name[32]; |
| 63 | unsigned int irq; |
| 64 | |
| 65 | struct list_head list; |
| 66 | }; |
| 67 | |
| 68 | static struct spu_queue **cpu_to_cwq; |
| 69 | static struct spu_queue **cpu_to_mau; |
| 70 | |
| 71 | static unsigned long spu_next_offset(struct spu_queue *q, unsigned long off) |
| 72 | { |
| 73 | if (q->q_type == HV_NCS_QTYPE_MAU) { |
| 74 | off += MAU_ENTRY_SIZE; |
| 75 | if (off == (MAU_ENTRY_SIZE * MAU_NUM_ENTRIES)) |
| 76 | off = 0; |
| 77 | } else { |
| 78 | off += CWQ_ENTRY_SIZE; |
| 79 | if (off == (CWQ_ENTRY_SIZE * CWQ_NUM_ENTRIES)) |
| 80 | off = 0; |
| 81 | } |
| 82 | return off; |
| 83 | } |
| 84 | |
| 85 | struct n2_request_common { |
| 86 | struct list_head entry; |
| 87 | unsigned int offset; |
| 88 | }; |
| 89 | #define OFFSET_NOT_RUNNING (~(unsigned int)0) |
| 90 | |
| 91 | /* An async job request records the final tail value it used in |
| 92 | * n2_request_common->offset, test to see if that offset is in |
| 93 | * the range old_head, new_head, inclusive. |
| 94 | */ |
| 95 | static inline bool job_finished(struct spu_queue *q, unsigned int offset, |
| 96 | unsigned long old_head, unsigned long new_head) |
| 97 | { |
| 98 | if (old_head <= new_head) { |
| 99 | if (offset > old_head && offset <= new_head) |
| 100 | return true; |
| 101 | } else { |
| 102 | if (offset > old_head || offset <= new_head) |
| 103 | return true; |
| 104 | } |
| 105 | return false; |
| 106 | } |
| 107 | |
| 108 | /* When the HEAD marker is unequal to the actual HEAD, we get |
| 109 | * a virtual device INO interrupt. We should process the |
| 110 | * completed CWQ entries and adjust the HEAD marker to clear |
| 111 | * the IRQ. |
| 112 | */ |
| 113 | static irqreturn_t cwq_intr(int irq, void *dev_id) |
| 114 | { |
| 115 | unsigned long off, new_head, hv_ret; |
| 116 | struct spu_queue *q = dev_id; |
| 117 | |
| 118 | pr_err("CPU[%d]: Got CWQ interrupt for qhdl[%lx]\n", |
| 119 | smp_processor_id(), q->qhandle); |
| 120 | |
| 121 | spin_lock(&q->lock); |
| 122 | |
| 123 | hv_ret = sun4v_ncs_gethead(q->qhandle, &new_head); |
| 124 | |
| 125 | pr_err("CPU[%d]: CWQ gethead[%lx] hv_ret[%lu]\n", |
| 126 | smp_processor_id(), new_head, hv_ret); |
| 127 | |
| 128 | for (off = q->head; off != new_head; off = spu_next_offset(q, off)) { |
| 129 | /* XXX ... XXX */ |
| 130 | } |
| 131 | |
| 132 | hv_ret = sun4v_ncs_sethead_marker(q->qhandle, new_head); |
| 133 | if (hv_ret == HV_EOK) |
| 134 | q->head = new_head; |
| 135 | |
| 136 | spin_unlock(&q->lock); |
| 137 | |
| 138 | return IRQ_HANDLED; |
| 139 | } |
| 140 | |
| 141 | static irqreturn_t mau_intr(int irq, void *dev_id) |
| 142 | { |
| 143 | struct spu_queue *q = dev_id; |
| 144 | unsigned long head, hv_ret; |
| 145 | |
| 146 | spin_lock(&q->lock); |
| 147 | |
| 148 | pr_err("CPU[%d]: Got MAU interrupt for qhdl[%lx]\n", |
| 149 | smp_processor_id(), q->qhandle); |
| 150 | |
| 151 | hv_ret = sun4v_ncs_gethead(q->qhandle, &head); |
| 152 | |
| 153 | pr_err("CPU[%d]: MAU gethead[%lx] hv_ret[%lu]\n", |
| 154 | smp_processor_id(), head, hv_ret); |
| 155 | |
| 156 | sun4v_ncs_sethead_marker(q->qhandle, head); |
| 157 | |
| 158 | spin_unlock(&q->lock); |
| 159 | |
| 160 | return IRQ_HANDLED; |
| 161 | } |
| 162 | |
| 163 | static void *spu_queue_next(struct spu_queue *q, void *cur) |
| 164 | { |
| 165 | return q->q + spu_next_offset(q, cur - q->q); |
| 166 | } |
| 167 | |
| 168 | static int spu_queue_num_free(struct spu_queue *q) |
| 169 | { |
| 170 | unsigned long head = q->head; |
| 171 | unsigned long tail = q->tail; |
| 172 | unsigned long end = (CWQ_ENTRY_SIZE * CWQ_NUM_ENTRIES); |
| 173 | unsigned long diff; |
| 174 | |
| 175 | if (head > tail) |
| 176 | diff = head - tail; |
| 177 | else |
| 178 | diff = (end - tail) + head; |
| 179 | |
| 180 | return (diff / CWQ_ENTRY_SIZE) - 1; |
| 181 | } |
| 182 | |
| 183 | static void *spu_queue_alloc(struct spu_queue *q, int num_entries) |
| 184 | { |
| 185 | int avail = spu_queue_num_free(q); |
| 186 | |
| 187 | if (avail >= num_entries) |
| 188 | return q->q + q->tail; |
| 189 | |
| 190 | return NULL; |
| 191 | } |
| 192 | |
| 193 | static unsigned long spu_queue_submit(struct spu_queue *q, void *last) |
| 194 | { |
| 195 | unsigned long hv_ret, new_tail; |
| 196 | |
| 197 | new_tail = spu_next_offset(q, last - q->q); |
| 198 | |
| 199 | hv_ret = sun4v_ncs_settail(q->qhandle, new_tail); |
| 200 | if (hv_ret == HV_EOK) |
| 201 | q->tail = new_tail; |
| 202 | return hv_ret; |
| 203 | } |
| 204 | |
| 205 | static u64 control_word_base(unsigned int len, unsigned int hmac_key_len, |
| 206 | int enc_type, int auth_type, |
| 207 | unsigned int hash_len, |
| 208 | bool sfas, bool sob, bool eob, bool encrypt, |
| 209 | int opcode) |
| 210 | { |
| 211 | u64 word = (len - 1) & CONTROL_LEN; |
| 212 | |
| 213 | word |= ((u64) opcode << CONTROL_OPCODE_SHIFT); |
| 214 | word |= ((u64) enc_type << CONTROL_ENC_TYPE_SHIFT); |
| 215 | word |= ((u64) auth_type << CONTROL_AUTH_TYPE_SHIFT); |
| 216 | if (sfas) |
| 217 | word |= CONTROL_STORE_FINAL_AUTH_STATE; |
| 218 | if (sob) |
| 219 | word |= CONTROL_START_OF_BLOCK; |
| 220 | if (eob) |
| 221 | word |= CONTROL_END_OF_BLOCK; |
| 222 | if (encrypt) |
| 223 | word |= CONTROL_ENCRYPT; |
| 224 | if (hmac_key_len) |
| 225 | word |= ((u64) (hmac_key_len - 1)) << CONTROL_HMAC_KEY_LEN_SHIFT; |
| 226 | if (hash_len) |
| 227 | word |= ((u64) (hash_len - 1)) << CONTROL_HASH_LEN_SHIFT; |
| 228 | |
| 229 | return word; |
| 230 | } |
| 231 | |
| 232 | #if 0 |
| 233 | static inline bool n2_should_run_async(struct spu_queue *qp, int this_len) |
| 234 | { |
| 235 | if (this_len >= 64 || |
| 236 | qp->head != qp->tail) |
| 237 | return true; |
| 238 | return false; |
| 239 | } |
| 240 | #endif |
| 241 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 242 | struct n2_ahash_alg { |
| 243 | struct list_head entry; |
| 244 | const char *hash_zero; |
| 245 | const u32 *hash_init; |
| 246 | u8 hw_op_hashsz; |
| 247 | u8 digest_size; |
| 248 | u8 auth_type; |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 249 | u8 hmac_type; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 250 | struct ahash_alg alg; |
| 251 | }; |
| 252 | |
| 253 | static inline struct n2_ahash_alg *n2_ahash_alg(struct crypto_tfm *tfm) |
| 254 | { |
| 255 | struct crypto_alg *alg = tfm->__crt_alg; |
| 256 | struct ahash_alg *ahash_alg; |
| 257 | |
| 258 | ahash_alg = container_of(alg, struct ahash_alg, halg.base); |
| 259 | |
| 260 | return container_of(ahash_alg, struct n2_ahash_alg, alg); |
| 261 | } |
| 262 | |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 263 | struct n2_hmac_alg { |
| 264 | const char *child_alg; |
| 265 | struct n2_ahash_alg derived; |
| 266 | }; |
| 267 | |
| 268 | static inline struct n2_hmac_alg *n2_hmac_alg(struct crypto_tfm *tfm) |
| 269 | { |
| 270 | struct crypto_alg *alg = tfm->__crt_alg; |
| 271 | struct ahash_alg *ahash_alg; |
| 272 | |
| 273 | ahash_alg = container_of(alg, struct ahash_alg, halg.base); |
| 274 | |
| 275 | return container_of(ahash_alg, struct n2_hmac_alg, derived.alg); |
| 276 | } |
| 277 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 278 | struct n2_hash_ctx { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 279 | struct crypto_ahash *fallback_tfm; |
| 280 | }; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 281 | |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 282 | #define N2_HASH_KEY_MAX 32 /* HW limit for all HMAC requests */ |
| 283 | |
| 284 | struct n2_hmac_ctx { |
| 285 | struct n2_hash_ctx base; |
| 286 | |
| 287 | struct crypto_shash *child_shash; |
| 288 | |
| 289 | int hash_key_len; |
| 290 | unsigned char hash_key[N2_HASH_KEY_MAX]; |
| 291 | }; |
| 292 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 293 | struct n2_hash_req_ctx { |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 294 | union { |
| 295 | struct md5_state md5; |
| 296 | struct sha1_state sha1; |
| 297 | struct sha256_state sha256; |
| 298 | } u; |
| 299 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 300 | struct ahash_request fallback_req; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 301 | }; |
| 302 | |
| 303 | static int n2_hash_async_init(struct ahash_request *req) |
| 304 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 305 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 306 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 307 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 308 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 309 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 310 | rctx->fallback_req.base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 311 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 312 | return crypto_ahash_init(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | static int n2_hash_async_update(struct ahash_request *req) |
| 316 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 317 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 318 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 319 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 320 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 321 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 322 | rctx->fallback_req.base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 323 | rctx->fallback_req.nbytes = req->nbytes; |
| 324 | rctx->fallback_req.src = req->src; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 325 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 326 | return crypto_ahash_update(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | static int n2_hash_async_final(struct ahash_request *req) |
| 330 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 331 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 332 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 333 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 334 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 335 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 336 | rctx->fallback_req.base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 337 | rctx->fallback_req.result = req->result; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 338 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 339 | return crypto_ahash_final(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | static int n2_hash_async_finup(struct ahash_request *req) |
| 343 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 344 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 345 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 346 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 347 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 348 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 349 | rctx->fallback_req.base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 350 | rctx->fallback_req.nbytes = req->nbytes; |
| 351 | rctx->fallback_req.src = req->src; |
| 352 | rctx->fallback_req.result = req->result; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 353 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 354 | return crypto_ahash_finup(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | static int n2_hash_cra_init(struct crypto_tfm *tfm) |
| 358 | { |
Marek Vasut | 5837af0 | 2014-05-14 11:41:01 +0200 | [diff] [blame] | 359 | const char *fallback_driver_name = crypto_tfm_alg_name(tfm); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 360 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); |
| 361 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(ahash); |
| 362 | struct crypto_ahash *fallback_tfm; |
| 363 | int err; |
| 364 | |
| 365 | fallback_tfm = crypto_alloc_ahash(fallback_driver_name, 0, |
| 366 | CRYPTO_ALG_NEED_FALLBACK); |
| 367 | if (IS_ERR(fallback_tfm)) { |
| 368 | pr_warning("Fallback driver '%s' could not be loaded!\n", |
| 369 | fallback_driver_name); |
| 370 | err = PTR_ERR(fallback_tfm); |
| 371 | goto out; |
| 372 | } |
| 373 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 374 | crypto_ahash_set_reqsize(ahash, (sizeof(struct n2_hash_req_ctx) + |
| 375 | crypto_ahash_reqsize(fallback_tfm))); |
| 376 | |
| 377 | ctx->fallback_tfm = fallback_tfm; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 378 | return 0; |
| 379 | |
| 380 | out: |
| 381 | return err; |
| 382 | } |
| 383 | |
| 384 | static void n2_hash_cra_exit(struct crypto_tfm *tfm) |
| 385 | { |
| 386 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); |
| 387 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(ahash); |
| 388 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 389 | crypto_free_ahash(ctx->fallback_tfm); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 390 | } |
| 391 | |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 392 | static int n2_hmac_cra_init(struct crypto_tfm *tfm) |
| 393 | { |
Marek Vasut | 5837af0 | 2014-05-14 11:41:01 +0200 | [diff] [blame] | 394 | const char *fallback_driver_name = crypto_tfm_alg_name(tfm); |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 395 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); |
| 396 | struct n2_hmac_ctx *ctx = crypto_ahash_ctx(ahash); |
| 397 | struct n2_hmac_alg *n2alg = n2_hmac_alg(tfm); |
| 398 | struct crypto_ahash *fallback_tfm; |
| 399 | struct crypto_shash *child_shash; |
| 400 | int err; |
| 401 | |
| 402 | fallback_tfm = crypto_alloc_ahash(fallback_driver_name, 0, |
| 403 | CRYPTO_ALG_NEED_FALLBACK); |
| 404 | if (IS_ERR(fallback_tfm)) { |
| 405 | pr_warning("Fallback driver '%s' could not be loaded!\n", |
| 406 | fallback_driver_name); |
| 407 | err = PTR_ERR(fallback_tfm); |
| 408 | goto out; |
| 409 | } |
| 410 | |
| 411 | child_shash = crypto_alloc_shash(n2alg->child_alg, 0, 0); |
| 412 | if (IS_ERR(child_shash)) { |
| 413 | pr_warning("Child shash '%s' could not be loaded!\n", |
| 414 | n2alg->child_alg); |
| 415 | err = PTR_ERR(child_shash); |
| 416 | goto out_free_fallback; |
| 417 | } |
| 418 | |
| 419 | crypto_ahash_set_reqsize(ahash, (sizeof(struct n2_hash_req_ctx) + |
| 420 | crypto_ahash_reqsize(fallback_tfm))); |
| 421 | |
| 422 | ctx->child_shash = child_shash; |
| 423 | ctx->base.fallback_tfm = fallback_tfm; |
| 424 | return 0; |
| 425 | |
| 426 | out_free_fallback: |
| 427 | crypto_free_ahash(fallback_tfm); |
| 428 | |
| 429 | out: |
| 430 | return err; |
| 431 | } |
| 432 | |
| 433 | static void n2_hmac_cra_exit(struct crypto_tfm *tfm) |
| 434 | { |
| 435 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); |
| 436 | struct n2_hmac_ctx *ctx = crypto_ahash_ctx(ahash); |
| 437 | |
| 438 | crypto_free_ahash(ctx->base.fallback_tfm); |
| 439 | crypto_free_shash(ctx->child_shash); |
| 440 | } |
| 441 | |
| 442 | static int n2_hmac_async_setkey(struct crypto_ahash *tfm, const u8 *key, |
| 443 | unsigned int keylen) |
| 444 | { |
| 445 | struct n2_hmac_ctx *ctx = crypto_ahash_ctx(tfm); |
| 446 | struct crypto_shash *child_shash = ctx->child_shash; |
| 447 | struct crypto_ahash *fallback_tfm; |
Behan Webster | ce1f3e47 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 448 | SHASH_DESC_ON_STACK(shash, child_shash); |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 449 | int err, bs, ds; |
| 450 | |
| 451 | fallback_tfm = ctx->base.fallback_tfm; |
| 452 | err = crypto_ahash_setkey(fallback_tfm, key, keylen); |
| 453 | if (err) |
| 454 | return err; |
| 455 | |
Behan Webster | ce1f3e47 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 456 | shash->tfm = child_shash; |
| 457 | shash->flags = crypto_ahash_get_flags(tfm) & |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 458 | CRYPTO_TFM_REQ_MAY_SLEEP; |
| 459 | |
| 460 | bs = crypto_shash_blocksize(child_shash); |
| 461 | ds = crypto_shash_digestsize(child_shash); |
| 462 | BUG_ON(ds > N2_HASH_KEY_MAX); |
| 463 | if (keylen > bs) { |
Behan Webster | ce1f3e47 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 464 | err = crypto_shash_digest(shash, key, keylen, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 465 | ctx->hash_key); |
| 466 | if (err) |
| 467 | return err; |
| 468 | keylen = ds; |
| 469 | } else if (keylen <= N2_HASH_KEY_MAX) |
| 470 | memcpy(ctx->hash_key, key, keylen); |
| 471 | |
| 472 | ctx->hash_key_len = keylen; |
| 473 | |
| 474 | return err; |
| 475 | } |
| 476 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 477 | static unsigned long wait_for_tail(struct spu_queue *qp) |
| 478 | { |
| 479 | unsigned long head, hv_ret; |
| 480 | |
| 481 | do { |
| 482 | hv_ret = sun4v_ncs_gethead(qp->qhandle, &head); |
| 483 | if (hv_ret != HV_EOK) { |
| 484 | pr_err("Hypervisor error on gethead\n"); |
| 485 | break; |
| 486 | } |
| 487 | if (head == qp->tail) { |
| 488 | qp->head = head; |
| 489 | break; |
| 490 | } |
| 491 | } while (1); |
| 492 | return hv_ret; |
| 493 | } |
| 494 | |
| 495 | static unsigned long submit_and_wait_for_tail(struct spu_queue *qp, |
| 496 | struct cwq_initial_entry *ent) |
| 497 | { |
| 498 | unsigned long hv_ret = spu_queue_submit(qp, ent); |
| 499 | |
| 500 | if (hv_ret == HV_EOK) |
| 501 | hv_ret = wait_for_tail(qp); |
| 502 | |
| 503 | return hv_ret; |
| 504 | } |
| 505 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 506 | static int n2_do_async_digest(struct ahash_request *req, |
| 507 | unsigned int auth_type, unsigned int digest_size, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 508 | unsigned int result_size, void *hash_loc, |
| 509 | unsigned long auth_key, unsigned int auth_key_len) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 510 | { |
| 511 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 512 | struct cwq_initial_entry *ent; |
| 513 | struct crypto_hash_walk walk; |
| 514 | struct spu_queue *qp; |
| 515 | unsigned long flags; |
| 516 | int err = -ENODEV; |
| 517 | int nbytes, cpu; |
| 518 | |
| 519 | /* The total effective length of the operation may not |
| 520 | * exceed 2^16. |
| 521 | */ |
| 522 | if (unlikely(req->nbytes > (1 << 16))) { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 523 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 65a23d6 | 2010-05-22 01:11:03 -0700 | [diff] [blame] | 524 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 525 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 526 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 527 | rctx->fallback_req.base.flags = |
| 528 | req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 529 | rctx->fallback_req.nbytes = req->nbytes; |
| 530 | rctx->fallback_req.src = req->src; |
| 531 | rctx->fallback_req.result = req->result; |
| 532 | |
| 533 | return crypto_ahash_digest(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 534 | } |
| 535 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 536 | nbytes = crypto_hash_walk_first(req, &walk); |
| 537 | |
| 538 | cpu = get_cpu(); |
| 539 | qp = cpu_to_cwq[cpu]; |
| 540 | if (!qp) |
| 541 | goto out; |
| 542 | |
| 543 | spin_lock_irqsave(&qp->lock, flags); |
| 544 | |
| 545 | /* XXX can do better, improve this later by doing a by-hand scatterlist |
| 546 | * XXX walk, etc. |
| 547 | */ |
| 548 | ent = qp->q + qp->tail; |
| 549 | |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 550 | ent->control = control_word_base(nbytes, auth_key_len, 0, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 551 | auth_type, digest_size, |
| 552 | false, true, false, false, |
| 553 | OPCODE_INPLACE_BIT | |
| 554 | OPCODE_AUTH_MAC); |
| 555 | ent->src_addr = __pa(walk.data); |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 556 | ent->auth_key_addr = auth_key; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 557 | ent->auth_iv_addr = __pa(hash_loc); |
| 558 | ent->final_auth_state_addr = 0UL; |
| 559 | ent->enc_key_addr = 0UL; |
| 560 | ent->enc_iv_addr = 0UL; |
| 561 | ent->dest_addr = __pa(hash_loc); |
| 562 | |
| 563 | nbytes = crypto_hash_walk_done(&walk, 0); |
| 564 | while (nbytes > 0) { |
| 565 | ent = spu_queue_next(qp, ent); |
| 566 | |
| 567 | ent->control = (nbytes - 1); |
| 568 | ent->src_addr = __pa(walk.data); |
| 569 | ent->auth_key_addr = 0UL; |
| 570 | ent->auth_iv_addr = 0UL; |
| 571 | ent->final_auth_state_addr = 0UL; |
| 572 | ent->enc_key_addr = 0UL; |
| 573 | ent->enc_iv_addr = 0UL; |
| 574 | ent->dest_addr = 0UL; |
| 575 | |
| 576 | nbytes = crypto_hash_walk_done(&walk, 0); |
| 577 | } |
| 578 | ent->control |= CONTROL_END_OF_BLOCK; |
| 579 | |
| 580 | if (submit_and_wait_for_tail(qp, ent) != HV_EOK) |
| 581 | err = -EINVAL; |
| 582 | else |
| 583 | err = 0; |
| 584 | |
| 585 | spin_unlock_irqrestore(&qp->lock, flags); |
| 586 | |
| 587 | if (!err) |
| 588 | memcpy(req->result, hash_loc, result_size); |
| 589 | out: |
| 590 | put_cpu(); |
| 591 | |
| 592 | return err; |
| 593 | } |
| 594 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 595 | static int n2_hash_async_digest(struct ahash_request *req) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 596 | { |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 597 | struct n2_ahash_alg *n2alg = n2_ahash_alg(req->base.tfm); |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 598 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 599 | int ds; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 600 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 601 | ds = n2alg->digest_size; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 602 | if (unlikely(req->nbytes == 0)) { |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 603 | memcpy(req->result, n2alg->hash_zero, ds); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 604 | return 0; |
| 605 | } |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 606 | memcpy(&rctx->u, n2alg->hash_init, n2alg->hw_op_hashsz); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 607 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 608 | return n2_do_async_digest(req, n2alg->auth_type, |
| 609 | n2alg->hw_op_hashsz, ds, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 610 | &rctx->u, 0UL, 0); |
| 611 | } |
| 612 | |
| 613 | static int n2_hmac_async_digest(struct ahash_request *req) |
| 614 | { |
| 615 | struct n2_hmac_alg *n2alg = n2_hmac_alg(req->base.tfm); |
| 616 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
| 617 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 618 | struct n2_hmac_ctx *ctx = crypto_ahash_ctx(tfm); |
| 619 | int ds; |
| 620 | |
| 621 | ds = n2alg->derived.digest_size; |
| 622 | if (unlikely(req->nbytes == 0) || |
| 623 | unlikely(ctx->hash_key_len > N2_HASH_KEY_MAX)) { |
| 624 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
| 625 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 626 | |
| 627 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 628 | rctx->fallback_req.base.flags = |
| 629 | req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 630 | rctx->fallback_req.nbytes = req->nbytes; |
| 631 | rctx->fallback_req.src = req->src; |
| 632 | rctx->fallback_req.result = req->result; |
| 633 | |
| 634 | return crypto_ahash_digest(&rctx->fallback_req); |
| 635 | } |
| 636 | memcpy(&rctx->u, n2alg->derived.hash_init, |
| 637 | n2alg->derived.hw_op_hashsz); |
| 638 | |
| 639 | return n2_do_async_digest(req, n2alg->derived.hmac_type, |
| 640 | n2alg->derived.hw_op_hashsz, ds, |
| 641 | &rctx->u, |
| 642 | __pa(&ctx->hash_key), |
| 643 | ctx->hash_key_len); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | struct n2_cipher_context { |
| 647 | int key_len; |
| 648 | int enc_type; |
| 649 | union { |
| 650 | u8 aes[AES_MAX_KEY_SIZE]; |
| 651 | u8 des[DES_KEY_SIZE]; |
| 652 | u8 des3[3 * DES_KEY_SIZE]; |
| 653 | u8 arc4[258]; /* S-box, X, Y */ |
| 654 | } key; |
| 655 | }; |
| 656 | |
| 657 | #define N2_CHUNK_ARR_LEN 16 |
| 658 | |
| 659 | struct n2_crypto_chunk { |
| 660 | struct list_head entry; |
| 661 | unsigned long iv_paddr : 44; |
| 662 | unsigned long arr_len : 20; |
| 663 | unsigned long dest_paddr; |
| 664 | unsigned long dest_final; |
| 665 | struct { |
| 666 | unsigned long src_paddr : 44; |
| 667 | unsigned long src_len : 20; |
| 668 | } arr[N2_CHUNK_ARR_LEN]; |
| 669 | }; |
| 670 | |
| 671 | struct n2_request_context { |
| 672 | struct ablkcipher_walk walk; |
| 673 | struct list_head chunk_list; |
| 674 | struct n2_crypto_chunk chunk; |
| 675 | u8 temp_iv[16]; |
| 676 | }; |
| 677 | |
| 678 | /* The SPU allows some level of flexibility for partial cipher blocks |
| 679 | * being specified in a descriptor. |
| 680 | * |
| 681 | * It merely requires that every descriptor's length field is at least |
| 682 | * as large as the cipher block size. This means that a cipher block |
| 683 | * can span at most 2 descriptors. However, this does not allow a |
| 684 | * partial block to span into the final descriptor as that would |
| 685 | * violate the rule (since every descriptor's length must be at lest |
| 686 | * the block size). So, for example, assuming an 8 byte block size: |
| 687 | * |
| 688 | * 0xe --> 0xa --> 0x8 |
| 689 | * |
| 690 | * is a valid length sequence, whereas: |
| 691 | * |
| 692 | * 0xe --> 0xb --> 0x7 |
| 693 | * |
| 694 | * is not a valid sequence. |
| 695 | */ |
| 696 | |
| 697 | struct n2_cipher_alg { |
| 698 | struct list_head entry; |
| 699 | u8 enc_type; |
| 700 | struct crypto_alg alg; |
| 701 | }; |
| 702 | |
| 703 | static inline struct n2_cipher_alg *n2_cipher_alg(struct crypto_tfm *tfm) |
| 704 | { |
| 705 | struct crypto_alg *alg = tfm->__crt_alg; |
| 706 | |
| 707 | return container_of(alg, struct n2_cipher_alg, alg); |
| 708 | } |
| 709 | |
| 710 | struct n2_cipher_request_context { |
| 711 | struct ablkcipher_walk walk; |
| 712 | }; |
| 713 | |
| 714 | static int n2_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 715 | unsigned int keylen) |
| 716 | { |
| 717 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 718 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 719 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 720 | |
| 721 | ctx->enc_type = (n2alg->enc_type & ENC_TYPE_CHAINING_MASK); |
| 722 | |
| 723 | switch (keylen) { |
| 724 | case AES_KEYSIZE_128: |
| 725 | ctx->enc_type |= ENC_TYPE_ALG_AES128; |
| 726 | break; |
| 727 | case AES_KEYSIZE_192: |
| 728 | ctx->enc_type |= ENC_TYPE_ALG_AES192; |
| 729 | break; |
| 730 | case AES_KEYSIZE_256: |
| 731 | ctx->enc_type |= ENC_TYPE_ALG_AES256; |
| 732 | break; |
| 733 | default: |
| 734 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 735 | return -EINVAL; |
| 736 | } |
| 737 | |
| 738 | ctx->key_len = keylen; |
| 739 | memcpy(ctx->key.aes, key, keylen); |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | static int n2_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 744 | unsigned int keylen) |
| 745 | { |
| 746 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 747 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 748 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 749 | u32 tmp[DES_EXPKEY_WORDS]; |
| 750 | int err; |
| 751 | |
| 752 | ctx->enc_type = n2alg->enc_type; |
| 753 | |
| 754 | if (keylen != DES_KEY_SIZE) { |
| 755 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 756 | return -EINVAL; |
| 757 | } |
| 758 | |
| 759 | err = des_ekey(tmp, key); |
| 760 | if (err == 0 && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) { |
| 761 | tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; |
| 762 | return -EINVAL; |
| 763 | } |
| 764 | |
| 765 | ctx->key_len = keylen; |
| 766 | memcpy(ctx->key.des, key, keylen); |
| 767 | return 0; |
| 768 | } |
| 769 | |
| 770 | static int n2_3des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 771 | unsigned int keylen) |
| 772 | { |
| 773 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 774 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 775 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 776 | |
| 777 | ctx->enc_type = n2alg->enc_type; |
| 778 | |
| 779 | if (keylen != (3 * DES_KEY_SIZE)) { |
| 780 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 781 | return -EINVAL; |
| 782 | } |
| 783 | ctx->key_len = keylen; |
| 784 | memcpy(ctx->key.des3, key, keylen); |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | static int n2_arc4_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 789 | unsigned int keylen) |
| 790 | { |
| 791 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 792 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 793 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 794 | u8 *s = ctx->key.arc4; |
| 795 | u8 *x = s + 256; |
| 796 | u8 *y = x + 1; |
| 797 | int i, j, k; |
| 798 | |
| 799 | ctx->enc_type = n2alg->enc_type; |
| 800 | |
| 801 | j = k = 0; |
| 802 | *x = 0; |
| 803 | *y = 0; |
| 804 | for (i = 0; i < 256; i++) |
| 805 | s[i] = i; |
| 806 | for (i = 0; i < 256; i++) { |
| 807 | u8 a = s[i]; |
| 808 | j = (j + key[k] + a) & 0xff; |
| 809 | s[i] = s[j]; |
| 810 | s[j] = a; |
| 811 | if (++k >= keylen) |
| 812 | k = 0; |
| 813 | } |
| 814 | |
| 815 | return 0; |
| 816 | } |
| 817 | |
| 818 | static inline int cipher_descriptor_len(int nbytes, unsigned int block_size) |
| 819 | { |
| 820 | int this_len = nbytes; |
| 821 | |
| 822 | this_len -= (nbytes & (block_size - 1)); |
| 823 | return this_len > (1 << 16) ? (1 << 16) : this_len; |
| 824 | } |
| 825 | |
| 826 | static int __n2_crypt_chunk(struct crypto_tfm *tfm, struct n2_crypto_chunk *cp, |
| 827 | struct spu_queue *qp, bool encrypt) |
| 828 | { |
| 829 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 830 | struct cwq_initial_entry *ent; |
| 831 | bool in_place; |
| 832 | int i; |
| 833 | |
| 834 | ent = spu_queue_alloc(qp, cp->arr_len); |
| 835 | if (!ent) { |
| 836 | pr_info("queue_alloc() of %d fails\n", |
| 837 | cp->arr_len); |
| 838 | return -EBUSY; |
| 839 | } |
| 840 | |
| 841 | in_place = (cp->dest_paddr == cp->arr[0].src_paddr); |
| 842 | |
| 843 | ent->control = control_word_base(cp->arr[0].src_len, |
| 844 | 0, ctx->enc_type, 0, 0, |
| 845 | false, true, false, encrypt, |
| 846 | OPCODE_ENCRYPT | |
| 847 | (in_place ? OPCODE_INPLACE_BIT : 0)); |
| 848 | ent->src_addr = cp->arr[0].src_paddr; |
| 849 | ent->auth_key_addr = 0UL; |
| 850 | ent->auth_iv_addr = 0UL; |
| 851 | ent->final_auth_state_addr = 0UL; |
| 852 | ent->enc_key_addr = __pa(&ctx->key); |
| 853 | ent->enc_iv_addr = cp->iv_paddr; |
| 854 | ent->dest_addr = (in_place ? 0UL : cp->dest_paddr); |
| 855 | |
| 856 | for (i = 1; i < cp->arr_len; i++) { |
| 857 | ent = spu_queue_next(qp, ent); |
| 858 | |
| 859 | ent->control = cp->arr[i].src_len - 1; |
| 860 | ent->src_addr = cp->arr[i].src_paddr; |
| 861 | ent->auth_key_addr = 0UL; |
| 862 | ent->auth_iv_addr = 0UL; |
| 863 | ent->final_auth_state_addr = 0UL; |
| 864 | ent->enc_key_addr = 0UL; |
| 865 | ent->enc_iv_addr = 0UL; |
| 866 | ent->dest_addr = 0UL; |
| 867 | } |
| 868 | ent->control |= CONTROL_END_OF_BLOCK; |
| 869 | |
| 870 | return (spu_queue_submit(qp, ent) != HV_EOK) ? -EINVAL : 0; |
| 871 | } |
| 872 | |
| 873 | static int n2_compute_chunks(struct ablkcipher_request *req) |
| 874 | { |
| 875 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 876 | struct ablkcipher_walk *walk = &rctx->walk; |
| 877 | struct n2_crypto_chunk *chunk; |
| 878 | unsigned long dest_prev; |
| 879 | unsigned int tot_len; |
| 880 | bool prev_in_place; |
| 881 | int err, nbytes; |
| 882 | |
| 883 | ablkcipher_walk_init(walk, req->dst, req->src, req->nbytes); |
| 884 | err = ablkcipher_walk_phys(req, walk); |
| 885 | if (err) |
| 886 | return err; |
| 887 | |
| 888 | INIT_LIST_HEAD(&rctx->chunk_list); |
| 889 | |
| 890 | chunk = &rctx->chunk; |
| 891 | INIT_LIST_HEAD(&chunk->entry); |
| 892 | |
| 893 | chunk->iv_paddr = 0UL; |
| 894 | chunk->arr_len = 0; |
| 895 | chunk->dest_paddr = 0UL; |
| 896 | |
| 897 | prev_in_place = false; |
| 898 | dest_prev = ~0UL; |
| 899 | tot_len = 0; |
| 900 | |
| 901 | while ((nbytes = walk->nbytes) != 0) { |
| 902 | unsigned long dest_paddr, src_paddr; |
| 903 | bool in_place; |
| 904 | int this_len; |
| 905 | |
| 906 | src_paddr = (page_to_phys(walk->src.page) + |
| 907 | walk->src.offset); |
| 908 | dest_paddr = (page_to_phys(walk->dst.page) + |
| 909 | walk->dst.offset); |
| 910 | in_place = (src_paddr == dest_paddr); |
| 911 | this_len = cipher_descriptor_len(nbytes, walk->blocksize); |
| 912 | |
| 913 | if (chunk->arr_len != 0) { |
| 914 | if (in_place != prev_in_place || |
| 915 | (!prev_in_place && |
| 916 | dest_paddr != dest_prev) || |
| 917 | chunk->arr_len == N2_CHUNK_ARR_LEN || |
| 918 | tot_len + this_len > (1 << 16)) { |
| 919 | chunk->dest_final = dest_prev; |
| 920 | list_add_tail(&chunk->entry, |
| 921 | &rctx->chunk_list); |
| 922 | chunk = kzalloc(sizeof(*chunk), GFP_ATOMIC); |
| 923 | if (!chunk) { |
| 924 | err = -ENOMEM; |
| 925 | break; |
| 926 | } |
| 927 | INIT_LIST_HEAD(&chunk->entry); |
| 928 | } |
| 929 | } |
| 930 | if (chunk->arr_len == 0) { |
| 931 | chunk->dest_paddr = dest_paddr; |
| 932 | tot_len = 0; |
| 933 | } |
| 934 | chunk->arr[chunk->arr_len].src_paddr = src_paddr; |
| 935 | chunk->arr[chunk->arr_len].src_len = this_len; |
| 936 | chunk->arr_len++; |
| 937 | |
| 938 | dest_prev = dest_paddr + this_len; |
| 939 | prev_in_place = in_place; |
| 940 | tot_len += this_len; |
| 941 | |
| 942 | err = ablkcipher_walk_done(req, walk, nbytes - this_len); |
| 943 | if (err) |
| 944 | break; |
| 945 | } |
| 946 | if (!err && chunk->arr_len != 0) { |
| 947 | chunk->dest_final = dest_prev; |
| 948 | list_add_tail(&chunk->entry, &rctx->chunk_list); |
| 949 | } |
| 950 | |
| 951 | return err; |
| 952 | } |
| 953 | |
| 954 | static void n2_chunk_complete(struct ablkcipher_request *req, void *final_iv) |
| 955 | { |
| 956 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 957 | struct n2_crypto_chunk *c, *tmp; |
| 958 | |
| 959 | if (final_iv) |
| 960 | memcpy(rctx->walk.iv, final_iv, rctx->walk.blocksize); |
| 961 | |
| 962 | ablkcipher_walk_complete(&rctx->walk); |
| 963 | list_for_each_entry_safe(c, tmp, &rctx->chunk_list, entry) { |
| 964 | list_del(&c->entry); |
| 965 | if (unlikely(c != &rctx->chunk)) |
| 966 | kfree(c); |
| 967 | } |
| 968 | |
| 969 | } |
| 970 | |
| 971 | static int n2_do_ecb(struct ablkcipher_request *req, bool encrypt) |
| 972 | { |
| 973 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 974 | struct crypto_tfm *tfm = req->base.tfm; |
| 975 | int err = n2_compute_chunks(req); |
| 976 | struct n2_crypto_chunk *c, *tmp; |
| 977 | unsigned long flags, hv_ret; |
| 978 | struct spu_queue *qp; |
| 979 | |
| 980 | if (err) |
| 981 | return err; |
| 982 | |
| 983 | qp = cpu_to_cwq[get_cpu()]; |
| 984 | err = -ENODEV; |
| 985 | if (!qp) |
| 986 | goto out; |
| 987 | |
| 988 | spin_lock_irqsave(&qp->lock, flags); |
| 989 | |
| 990 | list_for_each_entry_safe(c, tmp, &rctx->chunk_list, entry) { |
| 991 | err = __n2_crypt_chunk(tfm, c, qp, encrypt); |
| 992 | if (err) |
| 993 | break; |
| 994 | list_del(&c->entry); |
| 995 | if (unlikely(c != &rctx->chunk)) |
| 996 | kfree(c); |
| 997 | } |
| 998 | if (!err) { |
| 999 | hv_ret = wait_for_tail(qp); |
| 1000 | if (hv_ret != HV_EOK) |
| 1001 | err = -EINVAL; |
| 1002 | } |
| 1003 | |
| 1004 | spin_unlock_irqrestore(&qp->lock, flags); |
| 1005 | |
Thomas Meyer | e27303b | 2011-08-15 15:20:19 +0800 | [diff] [blame] | 1006 | out: |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1007 | put_cpu(); |
| 1008 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1009 | n2_chunk_complete(req, NULL); |
| 1010 | return err; |
| 1011 | } |
| 1012 | |
| 1013 | static int n2_encrypt_ecb(struct ablkcipher_request *req) |
| 1014 | { |
| 1015 | return n2_do_ecb(req, true); |
| 1016 | } |
| 1017 | |
| 1018 | static int n2_decrypt_ecb(struct ablkcipher_request *req) |
| 1019 | { |
| 1020 | return n2_do_ecb(req, false); |
| 1021 | } |
| 1022 | |
| 1023 | static int n2_do_chaining(struct ablkcipher_request *req, bool encrypt) |
| 1024 | { |
| 1025 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 1026 | struct crypto_tfm *tfm = req->base.tfm; |
| 1027 | unsigned long flags, hv_ret, iv_paddr; |
| 1028 | int err = n2_compute_chunks(req); |
| 1029 | struct n2_crypto_chunk *c, *tmp; |
| 1030 | struct spu_queue *qp; |
| 1031 | void *final_iv_addr; |
| 1032 | |
| 1033 | final_iv_addr = NULL; |
| 1034 | |
| 1035 | if (err) |
| 1036 | return err; |
| 1037 | |
| 1038 | qp = cpu_to_cwq[get_cpu()]; |
| 1039 | err = -ENODEV; |
| 1040 | if (!qp) |
| 1041 | goto out; |
| 1042 | |
| 1043 | spin_lock_irqsave(&qp->lock, flags); |
| 1044 | |
| 1045 | if (encrypt) { |
| 1046 | iv_paddr = __pa(rctx->walk.iv); |
| 1047 | list_for_each_entry_safe(c, tmp, &rctx->chunk_list, |
| 1048 | entry) { |
| 1049 | c->iv_paddr = iv_paddr; |
| 1050 | err = __n2_crypt_chunk(tfm, c, qp, true); |
| 1051 | if (err) |
| 1052 | break; |
| 1053 | iv_paddr = c->dest_final - rctx->walk.blocksize; |
| 1054 | list_del(&c->entry); |
| 1055 | if (unlikely(c != &rctx->chunk)) |
| 1056 | kfree(c); |
| 1057 | } |
| 1058 | final_iv_addr = __va(iv_paddr); |
| 1059 | } else { |
| 1060 | list_for_each_entry_safe_reverse(c, tmp, &rctx->chunk_list, |
| 1061 | entry) { |
| 1062 | if (c == &rctx->chunk) { |
| 1063 | iv_paddr = __pa(rctx->walk.iv); |
| 1064 | } else { |
| 1065 | iv_paddr = (tmp->arr[tmp->arr_len-1].src_paddr + |
| 1066 | tmp->arr[tmp->arr_len-1].src_len - |
| 1067 | rctx->walk.blocksize); |
| 1068 | } |
| 1069 | if (!final_iv_addr) { |
| 1070 | unsigned long pa; |
| 1071 | |
| 1072 | pa = (c->arr[c->arr_len-1].src_paddr + |
| 1073 | c->arr[c->arr_len-1].src_len - |
| 1074 | rctx->walk.blocksize); |
| 1075 | final_iv_addr = rctx->temp_iv; |
| 1076 | memcpy(rctx->temp_iv, __va(pa), |
| 1077 | rctx->walk.blocksize); |
| 1078 | } |
| 1079 | c->iv_paddr = iv_paddr; |
| 1080 | err = __n2_crypt_chunk(tfm, c, qp, false); |
| 1081 | if (err) |
| 1082 | break; |
| 1083 | list_del(&c->entry); |
| 1084 | if (unlikely(c != &rctx->chunk)) |
| 1085 | kfree(c); |
| 1086 | } |
| 1087 | } |
| 1088 | if (!err) { |
| 1089 | hv_ret = wait_for_tail(qp); |
| 1090 | if (hv_ret != HV_EOK) |
| 1091 | err = -EINVAL; |
| 1092 | } |
| 1093 | |
| 1094 | spin_unlock_irqrestore(&qp->lock, flags); |
| 1095 | |
Thomas Meyer | e27303b | 2011-08-15 15:20:19 +0800 | [diff] [blame] | 1096 | out: |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1097 | put_cpu(); |
| 1098 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1099 | n2_chunk_complete(req, err ? NULL : final_iv_addr); |
| 1100 | return err; |
| 1101 | } |
| 1102 | |
| 1103 | static int n2_encrypt_chaining(struct ablkcipher_request *req) |
| 1104 | { |
| 1105 | return n2_do_chaining(req, true); |
| 1106 | } |
| 1107 | |
| 1108 | static int n2_decrypt_chaining(struct ablkcipher_request *req) |
| 1109 | { |
| 1110 | return n2_do_chaining(req, false); |
| 1111 | } |
| 1112 | |
| 1113 | struct n2_cipher_tmpl { |
| 1114 | const char *name; |
| 1115 | const char *drv_name; |
| 1116 | u8 block_size; |
| 1117 | u8 enc_type; |
| 1118 | struct ablkcipher_alg ablkcipher; |
| 1119 | }; |
| 1120 | |
| 1121 | static const struct n2_cipher_tmpl cipher_tmpls[] = { |
| 1122 | /* ARC4: only ECB is supported (chaining bits ignored) */ |
| 1123 | { .name = "ecb(arc4)", |
| 1124 | .drv_name = "ecb-arc4", |
| 1125 | .block_size = 1, |
| 1126 | .enc_type = (ENC_TYPE_ALG_RC4_STREAM | |
| 1127 | ENC_TYPE_CHAINING_ECB), |
| 1128 | .ablkcipher = { |
| 1129 | .min_keysize = 1, |
| 1130 | .max_keysize = 256, |
| 1131 | .setkey = n2_arc4_setkey, |
| 1132 | .encrypt = n2_encrypt_ecb, |
| 1133 | .decrypt = n2_decrypt_ecb, |
| 1134 | }, |
| 1135 | }, |
| 1136 | |
| 1137 | /* DES: ECB CBC and CFB are supported */ |
| 1138 | { .name = "ecb(des)", |
| 1139 | .drv_name = "ecb-des", |
| 1140 | .block_size = DES_BLOCK_SIZE, |
| 1141 | .enc_type = (ENC_TYPE_ALG_DES | |
| 1142 | ENC_TYPE_CHAINING_ECB), |
| 1143 | .ablkcipher = { |
| 1144 | .min_keysize = DES_KEY_SIZE, |
| 1145 | .max_keysize = DES_KEY_SIZE, |
| 1146 | .setkey = n2_des_setkey, |
| 1147 | .encrypt = n2_encrypt_ecb, |
| 1148 | .decrypt = n2_decrypt_ecb, |
| 1149 | }, |
| 1150 | }, |
| 1151 | { .name = "cbc(des)", |
| 1152 | .drv_name = "cbc-des", |
| 1153 | .block_size = DES_BLOCK_SIZE, |
| 1154 | .enc_type = (ENC_TYPE_ALG_DES | |
| 1155 | ENC_TYPE_CHAINING_CBC), |
| 1156 | .ablkcipher = { |
| 1157 | .ivsize = DES_BLOCK_SIZE, |
| 1158 | .min_keysize = DES_KEY_SIZE, |
| 1159 | .max_keysize = DES_KEY_SIZE, |
| 1160 | .setkey = n2_des_setkey, |
| 1161 | .encrypt = n2_encrypt_chaining, |
| 1162 | .decrypt = n2_decrypt_chaining, |
| 1163 | }, |
| 1164 | }, |
| 1165 | { .name = "cfb(des)", |
| 1166 | .drv_name = "cfb-des", |
| 1167 | .block_size = DES_BLOCK_SIZE, |
| 1168 | .enc_type = (ENC_TYPE_ALG_DES | |
| 1169 | ENC_TYPE_CHAINING_CFB), |
| 1170 | .ablkcipher = { |
| 1171 | .min_keysize = DES_KEY_SIZE, |
| 1172 | .max_keysize = DES_KEY_SIZE, |
| 1173 | .setkey = n2_des_setkey, |
| 1174 | .encrypt = n2_encrypt_chaining, |
| 1175 | .decrypt = n2_decrypt_chaining, |
| 1176 | }, |
| 1177 | }, |
| 1178 | |
| 1179 | /* 3DES: ECB CBC and CFB are supported */ |
| 1180 | { .name = "ecb(des3_ede)", |
| 1181 | .drv_name = "ecb-3des", |
| 1182 | .block_size = DES_BLOCK_SIZE, |
| 1183 | .enc_type = (ENC_TYPE_ALG_3DES | |
| 1184 | ENC_TYPE_CHAINING_ECB), |
| 1185 | .ablkcipher = { |
| 1186 | .min_keysize = 3 * DES_KEY_SIZE, |
| 1187 | .max_keysize = 3 * DES_KEY_SIZE, |
| 1188 | .setkey = n2_3des_setkey, |
| 1189 | .encrypt = n2_encrypt_ecb, |
| 1190 | .decrypt = n2_decrypt_ecb, |
| 1191 | }, |
| 1192 | }, |
| 1193 | { .name = "cbc(des3_ede)", |
| 1194 | .drv_name = "cbc-3des", |
| 1195 | .block_size = DES_BLOCK_SIZE, |
| 1196 | .enc_type = (ENC_TYPE_ALG_3DES | |
| 1197 | ENC_TYPE_CHAINING_CBC), |
| 1198 | .ablkcipher = { |
| 1199 | .ivsize = DES_BLOCK_SIZE, |
| 1200 | .min_keysize = 3 * DES_KEY_SIZE, |
| 1201 | .max_keysize = 3 * DES_KEY_SIZE, |
| 1202 | .setkey = n2_3des_setkey, |
| 1203 | .encrypt = n2_encrypt_chaining, |
| 1204 | .decrypt = n2_decrypt_chaining, |
| 1205 | }, |
| 1206 | }, |
| 1207 | { .name = "cfb(des3_ede)", |
| 1208 | .drv_name = "cfb-3des", |
| 1209 | .block_size = DES_BLOCK_SIZE, |
| 1210 | .enc_type = (ENC_TYPE_ALG_3DES | |
| 1211 | ENC_TYPE_CHAINING_CFB), |
| 1212 | .ablkcipher = { |
| 1213 | .min_keysize = 3 * DES_KEY_SIZE, |
| 1214 | .max_keysize = 3 * DES_KEY_SIZE, |
| 1215 | .setkey = n2_3des_setkey, |
| 1216 | .encrypt = n2_encrypt_chaining, |
| 1217 | .decrypt = n2_decrypt_chaining, |
| 1218 | }, |
| 1219 | }, |
| 1220 | /* AES: ECB CBC and CTR are supported */ |
| 1221 | { .name = "ecb(aes)", |
| 1222 | .drv_name = "ecb-aes", |
| 1223 | .block_size = AES_BLOCK_SIZE, |
| 1224 | .enc_type = (ENC_TYPE_ALG_AES128 | |
| 1225 | ENC_TYPE_CHAINING_ECB), |
| 1226 | .ablkcipher = { |
| 1227 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1228 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1229 | .setkey = n2_aes_setkey, |
| 1230 | .encrypt = n2_encrypt_ecb, |
| 1231 | .decrypt = n2_decrypt_ecb, |
| 1232 | }, |
| 1233 | }, |
| 1234 | { .name = "cbc(aes)", |
| 1235 | .drv_name = "cbc-aes", |
| 1236 | .block_size = AES_BLOCK_SIZE, |
| 1237 | .enc_type = (ENC_TYPE_ALG_AES128 | |
| 1238 | ENC_TYPE_CHAINING_CBC), |
| 1239 | .ablkcipher = { |
| 1240 | .ivsize = AES_BLOCK_SIZE, |
| 1241 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1242 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1243 | .setkey = n2_aes_setkey, |
| 1244 | .encrypt = n2_encrypt_chaining, |
| 1245 | .decrypt = n2_decrypt_chaining, |
| 1246 | }, |
| 1247 | }, |
| 1248 | { .name = "ctr(aes)", |
| 1249 | .drv_name = "ctr-aes", |
| 1250 | .block_size = AES_BLOCK_SIZE, |
| 1251 | .enc_type = (ENC_TYPE_ALG_AES128 | |
| 1252 | ENC_TYPE_CHAINING_COUNTER), |
| 1253 | .ablkcipher = { |
| 1254 | .ivsize = AES_BLOCK_SIZE, |
| 1255 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1256 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1257 | .setkey = n2_aes_setkey, |
| 1258 | .encrypt = n2_encrypt_chaining, |
| 1259 | .decrypt = n2_encrypt_chaining, |
| 1260 | }, |
| 1261 | }, |
| 1262 | |
| 1263 | }; |
| 1264 | #define NUM_CIPHER_TMPLS ARRAY_SIZE(cipher_tmpls) |
| 1265 | |
| 1266 | static LIST_HEAD(cipher_algs); |
| 1267 | |
| 1268 | struct n2_hash_tmpl { |
| 1269 | const char *name; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1270 | const char *hash_zero; |
| 1271 | const u32 *hash_init; |
| 1272 | u8 hw_op_hashsz; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1273 | u8 digest_size; |
| 1274 | u8 block_size; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1275 | u8 auth_type; |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1276 | u8 hmac_type; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1277 | }; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1278 | |
| 1279 | static const char md5_zero[MD5_DIGEST_SIZE] = { |
| 1280 | 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04, |
| 1281 | 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e, |
| 1282 | }; |
| 1283 | static const u32 md5_init[MD5_HASH_WORDS] = { |
LABBE Corentin | d0bb9ee | 2015-05-17 12:54:16 +0200 | [diff] [blame] | 1284 | cpu_to_le32(MD5_H0), |
| 1285 | cpu_to_le32(MD5_H1), |
| 1286 | cpu_to_le32(MD5_H2), |
| 1287 | cpu_to_le32(MD5_H3), |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1288 | }; |
| 1289 | static const char sha1_zero[SHA1_DIGEST_SIZE] = { |
| 1290 | 0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, |
| 1291 | 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, |
| 1292 | 0x07, 0x09 |
| 1293 | }; |
| 1294 | static const u32 sha1_init[SHA1_DIGEST_SIZE / 4] = { |
| 1295 | SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4, |
| 1296 | }; |
| 1297 | static const char sha256_zero[SHA256_DIGEST_SIZE] = { |
| 1298 | 0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, |
| 1299 | 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, |
| 1300 | 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99, |
| 1301 | 0x1b, 0x78, 0x52, 0xb8, 0x55 |
| 1302 | }; |
| 1303 | static const u32 sha256_init[SHA256_DIGEST_SIZE / 4] = { |
| 1304 | SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3, |
| 1305 | SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7, |
| 1306 | }; |
| 1307 | static const char sha224_zero[SHA224_DIGEST_SIZE] = { |
| 1308 | 0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47, |
| 1309 | 0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2, |
| 1310 | 0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4, |
| 1311 | 0x2f |
| 1312 | }; |
| 1313 | static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = { |
| 1314 | SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3, |
| 1315 | SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7, |
| 1316 | }; |
| 1317 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1318 | static const struct n2_hash_tmpl hash_tmpls[] = { |
| 1319 | { .name = "md5", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1320 | .hash_zero = md5_zero, |
| 1321 | .hash_init = md5_init, |
| 1322 | .auth_type = AUTH_TYPE_MD5, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1323 | .hmac_type = AUTH_TYPE_HMAC_MD5, |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1324 | .hw_op_hashsz = MD5_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1325 | .digest_size = MD5_DIGEST_SIZE, |
| 1326 | .block_size = MD5_HMAC_BLOCK_SIZE }, |
| 1327 | { .name = "sha1", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1328 | .hash_zero = sha1_zero, |
| 1329 | .hash_init = sha1_init, |
| 1330 | .auth_type = AUTH_TYPE_SHA1, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1331 | .hmac_type = AUTH_TYPE_HMAC_SHA1, |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1332 | .hw_op_hashsz = SHA1_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1333 | .digest_size = SHA1_DIGEST_SIZE, |
| 1334 | .block_size = SHA1_BLOCK_SIZE }, |
| 1335 | { .name = "sha256", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1336 | .hash_zero = sha256_zero, |
| 1337 | .hash_init = sha256_init, |
| 1338 | .auth_type = AUTH_TYPE_SHA256, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1339 | .hmac_type = AUTH_TYPE_HMAC_SHA256, |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1340 | .hw_op_hashsz = SHA256_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1341 | .digest_size = SHA256_DIGEST_SIZE, |
| 1342 | .block_size = SHA256_BLOCK_SIZE }, |
| 1343 | { .name = "sha224", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1344 | .hash_zero = sha224_zero, |
| 1345 | .hash_init = sha224_init, |
| 1346 | .auth_type = AUTH_TYPE_SHA256, |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1347 | .hmac_type = AUTH_TYPE_RESERVED, |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1348 | .hw_op_hashsz = SHA256_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1349 | .digest_size = SHA224_DIGEST_SIZE, |
| 1350 | .block_size = SHA224_BLOCK_SIZE }, |
| 1351 | }; |
| 1352 | #define NUM_HASH_TMPLS ARRAY_SIZE(hash_tmpls) |
| 1353 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1354 | static LIST_HEAD(ahash_algs); |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1355 | static LIST_HEAD(hmac_algs); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1356 | |
| 1357 | static int algs_registered; |
| 1358 | |
| 1359 | static void __n2_unregister_algs(void) |
| 1360 | { |
| 1361 | struct n2_cipher_alg *cipher, *cipher_tmp; |
| 1362 | struct n2_ahash_alg *alg, *alg_tmp; |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1363 | struct n2_hmac_alg *hmac, *hmac_tmp; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1364 | |
| 1365 | list_for_each_entry_safe(cipher, cipher_tmp, &cipher_algs, entry) { |
| 1366 | crypto_unregister_alg(&cipher->alg); |
| 1367 | list_del(&cipher->entry); |
| 1368 | kfree(cipher); |
| 1369 | } |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1370 | list_for_each_entry_safe(hmac, hmac_tmp, &hmac_algs, derived.entry) { |
| 1371 | crypto_unregister_ahash(&hmac->derived.alg); |
| 1372 | list_del(&hmac->derived.entry); |
| 1373 | kfree(hmac); |
| 1374 | } |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1375 | list_for_each_entry_safe(alg, alg_tmp, &ahash_algs, entry) { |
| 1376 | crypto_unregister_ahash(&alg->alg); |
| 1377 | list_del(&alg->entry); |
| 1378 | kfree(alg); |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | static int n2_cipher_cra_init(struct crypto_tfm *tfm) |
| 1383 | { |
| 1384 | tfm->crt_ablkcipher.reqsize = sizeof(struct n2_request_context); |
| 1385 | return 0; |
| 1386 | } |
| 1387 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1388 | static int __n2_register_one_cipher(const struct n2_cipher_tmpl *tmpl) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1389 | { |
| 1390 | struct n2_cipher_alg *p = kzalloc(sizeof(*p), GFP_KERNEL); |
| 1391 | struct crypto_alg *alg; |
| 1392 | int err; |
| 1393 | |
| 1394 | if (!p) |
| 1395 | return -ENOMEM; |
| 1396 | |
| 1397 | alg = &p->alg; |
| 1398 | |
| 1399 | snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name); |
| 1400 | snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s-n2", tmpl->drv_name); |
| 1401 | alg->cra_priority = N2_CRA_PRIORITY; |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1402 | alg->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | |
| 1403 | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1404 | alg->cra_blocksize = tmpl->block_size; |
| 1405 | p->enc_type = tmpl->enc_type; |
| 1406 | alg->cra_ctxsize = sizeof(struct n2_cipher_context); |
| 1407 | alg->cra_type = &crypto_ablkcipher_type; |
| 1408 | alg->cra_u.ablkcipher = tmpl->ablkcipher; |
| 1409 | alg->cra_init = n2_cipher_cra_init; |
| 1410 | alg->cra_module = THIS_MODULE; |
| 1411 | |
| 1412 | list_add(&p->entry, &cipher_algs); |
| 1413 | err = crypto_register_alg(alg); |
| 1414 | if (err) { |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1415 | pr_err("%s alg registration failed\n", alg->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1416 | list_del(&p->entry); |
| 1417 | kfree(p); |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1418 | } else { |
| 1419 | pr_info("%s alg registered\n", alg->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1420 | } |
| 1421 | return err; |
| 1422 | } |
| 1423 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1424 | static int __n2_register_one_hmac(struct n2_ahash_alg *n2ahash) |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1425 | { |
| 1426 | struct n2_hmac_alg *p = kzalloc(sizeof(*p), GFP_KERNEL); |
| 1427 | struct ahash_alg *ahash; |
| 1428 | struct crypto_alg *base; |
| 1429 | int err; |
| 1430 | |
| 1431 | if (!p) |
| 1432 | return -ENOMEM; |
| 1433 | |
| 1434 | p->child_alg = n2ahash->alg.halg.base.cra_name; |
| 1435 | memcpy(&p->derived, n2ahash, sizeof(struct n2_ahash_alg)); |
| 1436 | INIT_LIST_HEAD(&p->derived.entry); |
| 1437 | |
| 1438 | ahash = &p->derived.alg; |
| 1439 | ahash->digest = n2_hmac_async_digest; |
| 1440 | ahash->setkey = n2_hmac_async_setkey; |
| 1441 | |
| 1442 | base = &ahash->halg.base; |
| 1443 | snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", p->child_alg); |
| 1444 | snprintf(base->cra_driver_name, CRYPTO_MAX_ALG_NAME, "hmac-%s-n2", p->child_alg); |
| 1445 | |
| 1446 | base->cra_ctxsize = sizeof(struct n2_hmac_ctx); |
| 1447 | base->cra_init = n2_hmac_cra_init; |
| 1448 | base->cra_exit = n2_hmac_cra_exit; |
| 1449 | |
| 1450 | list_add(&p->derived.entry, &hmac_algs); |
| 1451 | err = crypto_register_ahash(ahash); |
| 1452 | if (err) { |
| 1453 | pr_err("%s alg registration failed\n", base->cra_name); |
| 1454 | list_del(&p->derived.entry); |
| 1455 | kfree(p); |
| 1456 | } else { |
| 1457 | pr_info("%s alg registered\n", base->cra_name); |
| 1458 | } |
| 1459 | return err; |
| 1460 | } |
| 1461 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1462 | static int __n2_register_one_ahash(const struct n2_hash_tmpl *tmpl) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1463 | { |
| 1464 | struct n2_ahash_alg *p = kzalloc(sizeof(*p), GFP_KERNEL); |
| 1465 | struct hash_alg_common *halg; |
| 1466 | struct crypto_alg *base; |
| 1467 | struct ahash_alg *ahash; |
| 1468 | int err; |
| 1469 | |
| 1470 | if (!p) |
| 1471 | return -ENOMEM; |
| 1472 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1473 | p->hash_zero = tmpl->hash_zero; |
| 1474 | p->hash_init = tmpl->hash_init; |
| 1475 | p->auth_type = tmpl->auth_type; |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1476 | p->hmac_type = tmpl->hmac_type; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1477 | p->hw_op_hashsz = tmpl->hw_op_hashsz; |
| 1478 | p->digest_size = tmpl->digest_size; |
| 1479 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1480 | ahash = &p->alg; |
| 1481 | ahash->init = n2_hash_async_init; |
| 1482 | ahash->update = n2_hash_async_update; |
| 1483 | ahash->final = n2_hash_async_final; |
| 1484 | ahash->finup = n2_hash_async_finup; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame] | 1485 | ahash->digest = n2_hash_async_digest; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1486 | |
| 1487 | halg = &ahash->halg; |
| 1488 | halg->digestsize = tmpl->digest_size; |
| 1489 | |
| 1490 | base = &halg->base; |
| 1491 | snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name); |
| 1492 | snprintf(base->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s-n2", tmpl->name); |
| 1493 | base->cra_priority = N2_CRA_PRIORITY; |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1494 | base->cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1495 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
| 1496 | CRYPTO_ALG_NEED_FALLBACK; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1497 | base->cra_blocksize = tmpl->block_size; |
| 1498 | base->cra_ctxsize = sizeof(struct n2_hash_ctx); |
| 1499 | base->cra_module = THIS_MODULE; |
| 1500 | base->cra_init = n2_hash_cra_init; |
| 1501 | base->cra_exit = n2_hash_cra_exit; |
| 1502 | |
| 1503 | list_add(&p->entry, &ahash_algs); |
| 1504 | err = crypto_register_ahash(ahash); |
| 1505 | if (err) { |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1506 | pr_err("%s alg registration failed\n", base->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1507 | list_del(&p->entry); |
| 1508 | kfree(p); |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1509 | } else { |
| 1510 | pr_info("%s alg registered\n", base->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1511 | } |
David S. Miller | dc4ccfd | 2010-05-22 22:53:09 -0700 | [diff] [blame] | 1512 | if (!err && p->hmac_type != AUTH_TYPE_RESERVED) |
| 1513 | err = __n2_register_one_hmac(p); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1514 | return err; |
| 1515 | } |
| 1516 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1517 | static int n2_register_algs(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1518 | { |
| 1519 | int i, err = 0; |
| 1520 | |
| 1521 | mutex_lock(&spu_lock); |
| 1522 | if (algs_registered++) |
| 1523 | goto out; |
| 1524 | |
| 1525 | for (i = 0; i < NUM_HASH_TMPLS; i++) { |
| 1526 | err = __n2_register_one_ahash(&hash_tmpls[i]); |
| 1527 | if (err) { |
| 1528 | __n2_unregister_algs(); |
| 1529 | goto out; |
| 1530 | } |
| 1531 | } |
| 1532 | for (i = 0; i < NUM_CIPHER_TMPLS; i++) { |
| 1533 | err = __n2_register_one_cipher(&cipher_tmpls[i]); |
| 1534 | if (err) { |
| 1535 | __n2_unregister_algs(); |
| 1536 | goto out; |
| 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | out: |
| 1541 | mutex_unlock(&spu_lock); |
| 1542 | return err; |
| 1543 | } |
| 1544 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1545 | static void n2_unregister_algs(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1546 | { |
| 1547 | mutex_lock(&spu_lock); |
| 1548 | if (!--algs_registered) |
| 1549 | __n2_unregister_algs(); |
| 1550 | mutex_unlock(&spu_lock); |
| 1551 | } |
| 1552 | |
| 1553 | /* To map CWQ queues to interrupt sources, the hypervisor API provides |
| 1554 | * a devino. This isn't very useful to us because all of the |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1555 | * interrupts listed in the device_node have been translated to |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1556 | * Linux virtual IRQ cookie numbers. |
| 1557 | * |
| 1558 | * So we have to back-translate, going through the 'intr' and 'ino' |
| 1559 | * property tables of the n2cp MDESC node, matching it with the OF |
| 1560 | * 'interrupts' property entries, in order to to figure out which |
| 1561 | * devino goes to which already-translated IRQ. |
| 1562 | */ |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1563 | static int find_devino_index(struct platform_device *dev, struct spu_mdesc_info *ip, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1564 | unsigned long dev_ino) |
| 1565 | { |
| 1566 | const unsigned int *dev_intrs; |
| 1567 | unsigned int intr; |
| 1568 | int i; |
| 1569 | |
| 1570 | for (i = 0; i < ip->num_intrs; i++) { |
| 1571 | if (ip->ino_table[i].ino == dev_ino) |
| 1572 | break; |
| 1573 | } |
| 1574 | if (i == ip->num_intrs) |
| 1575 | return -ENODEV; |
| 1576 | |
| 1577 | intr = ip->ino_table[i].intr; |
| 1578 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1579 | dev_intrs = of_get_property(dev->dev.of_node, "interrupts", NULL); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1580 | if (!dev_intrs) |
| 1581 | return -ENODEV; |
| 1582 | |
Grant Likely | 19e4875 | 2010-08-08 00:23:26 -0600 | [diff] [blame] | 1583 | for (i = 0; i < dev->archdata.num_irqs; i++) { |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1584 | if (dev_intrs[i] == intr) |
| 1585 | return i; |
| 1586 | } |
| 1587 | |
| 1588 | return -ENODEV; |
| 1589 | } |
| 1590 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1591 | static int spu_map_ino(struct platform_device *dev, struct spu_mdesc_info *ip, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1592 | const char *irq_name, struct spu_queue *p, |
| 1593 | irq_handler_t handler) |
| 1594 | { |
| 1595 | unsigned long herr; |
| 1596 | int index; |
| 1597 | |
| 1598 | herr = sun4v_ncs_qhandle_to_devino(p->qhandle, &p->devino); |
| 1599 | if (herr) |
| 1600 | return -EINVAL; |
| 1601 | |
| 1602 | index = find_devino_index(dev, ip, p->devino); |
| 1603 | if (index < 0) |
| 1604 | return index; |
| 1605 | |
Grant Likely | 19e4875 | 2010-08-08 00:23:26 -0600 | [diff] [blame] | 1606 | p->irq = dev->archdata.irqs[index]; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1607 | |
| 1608 | sprintf(p->irq_name, "%s-%d", irq_name, index); |
| 1609 | |
Theodore Ts'o | 9751bfd | 2012-07-17 13:42:34 -0400 | [diff] [blame] | 1610 | return request_irq(p->irq, handler, 0, p->irq_name, p); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1611 | } |
| 1612 | |
| 1613 | static struct kmem_cache *queue_cache[2]; |
| 1614 | |
| 1615 | static void *new_queue(unsigned long q_type) |
| 1616 | { |
| 1617 | return kmem_cache_zalloc(queue_cache[q_type - 1], GFP_KERNEL); |
| 1618 | } |
| 1619 | |
| 1620 | static void free_queue(void *p, unsigned long q_type) |
| 1621 | { |
| 1622 | return kmem_cache_free(queue_cache[q_type - 1], p); |
| 1623 | } |
| 1624 | |
| 1625 | static int queue_cache_init(void) |
| 1626 | { |
| 1627 | if (!queue_cache[HV_NCS_QTYPE_MAU - 1]) |
| 1628 | queue_cache[HV_NCS_QTYPE_MAU - 1] = |
David S. Miller | 527b952 | 2010-05-22 00:50:12 -0700 | [diff] [blame] | 1629 | kmem_cache_create("mau_queue", |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1630 | (MAU_NUM_ENTRIES * |
| 1631 | MAU_ENTRY_SIZE), |
| 1632 | MAU_ENTRY_SIZE, 0, NULL); |
| 1633 | if (!queue_cache[HV_NCS_QTYPE_MAU - 1]) |
| 1634 | return -ENOMEM; |
| 1635 | |
| 1636 | if (!queue_cache[HV_NCS_QTYPE_CWQ - 1]) |
| 1637 | queue_cache[HV_NCS_QTYPE_CWQ - 1] = |
| 1638 | kmem_cache_create("cwq_queue", |
| 1639 | (CWQ_NUM_ENTRIES * |
| 1640 | CWQ_ENTRY_SIZE), |
| 1641 | CWQ_ENTRY_SIZE, 0, NULL); |
| 1642 | if (!queue_cache[HV_NCS_QTYPE_CWQ - 1]) { |
| 1643 | kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_MAU - 1]); |
| 1644 | return -ENOMEM; |
| 1645 | } |
| 1646 | return 0; |
| 1647 | } |
| 1648 | |
| 1649 | static void queue_cache_destroy(void) |
| 1650 | { |
| 1651 | kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_MAU - 1]); |
| 1652 | kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_CWQ - 1]); |
| 1653 | } |
| 1654 | |
| 1655 | static int spu_queue_register(struct spu_queue *p, unsigned long q_type) |
| 1656 | { |
| 1657 | cpumask_var_t old_allowed; |
| 1658 | unsigned long hv_ret; |
| 1659 | |
| 1660 | if (cpumask_empty(&p->sharing)) |
| 1661 | return -EINVAL; |
| 1662 | |
| 1663 | if (!alloc_cpumask_var(&old_allowed, GFP_KERNEL)) |
| 1664 | return -ENOMEM; |
| 1665 | |
| 1666 | cpumask_copy(old_allowed, ¤t->cpus_allowed); |
| 1667 | |
| 1668 | set_cpus_allowed_ptr(current, &p->sharing); |
| 1669 | |
| 1670 | hv_ret = sun4v_ncs_qconf(q_type, __pa(p->q), |
| 1671 | CWQ_NUM_ENTRIES, &p->qhandle); |
| 1672 | if (!hv_ret) |
| 1673 | sun4v_ncs_sethead_marker(p->qhandle, 0); |
| 1674 | |
| 1675 | set_cpus_allowed_ptr(current, old_allowed); |
| 1676 | |
| 1677 | free_cpumask_var(old_allowed); |
| 1678 | |
| 1679 | return (hv_ret ? -EINVAL : 0); |
| 1680 | } |
| 1681 | |
| 1682 | static int spu_queue_setup(struct spu_queue *p) |
| 1683 | { |
| 1684 | int err; |
| 1685 | |
| 1686 | p->q = new_queue(p->q_type); |
| 1687 | if (!p->q) |
| 1688 | return -ENOMEM; |
| 1689 | |
| 1690 | err = spu_queue_register(p, p->q_type); |
| 1691 | if (err) { |
| 1692 | free_queue(p->q, p->q_type); |
| 1693 | p->q = NULL; |
| 1694 | } |
| 1695 | |
| 1696 | return err; |
| 1697 | } |
| 1698 | |
| 1699 | static void spu_queue_destroy(struct spu_queue *p) |
| 1700 | { |
| 1701 | unsigned long hv_ret; |
| 1702 | |
| 1703 | if (!p->q) |
| 1704 | return; |
| 1705 | |
| 1706 | hv_ret = sun4v_ncs_qconf(p->q_type, p->qhandle, 0, &p->qhandle); |
| 1707 | |
| 1708 | if (!hv_ret) |
| 1709 | free_queue(p->q, p->q_type); |
| 1710 | } |
| 1711 | |
| 1712 | static void spu_list_destroy(struct list_head *list) |
| 1713 | { |
| 1714 | struct spu_queue *p, *n; |
| 1715 | |
| 1716 | list_for_each_entry_safe(p, n, list, list) { |
| 1717 | int i; |
| 1718 | |
| 1719 | for (i = 0; i < NR_CPUS; i++) { |
| 1720 | if (cpu_to_cwq[i] == p) |
| 1721 | cpu_to_cwq[i] = NULL; |
| 1722 | } |
| 1723 | |
| 1724 | if (p->irq) { |
| 1725 | free_irq(p->irq, p); |
| 1726 | p->irq = 0; |
| 1727 | } |
| 1728 | spu_queue_destroy(p); |
| 1729 | list_del(&p->list); |
| 1730 | kfree(p); |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | /* Walk the backward arcs of a CWQ 'exec-unit' node, |
| 1735 | * gathering cpu membership information. |
| 1736 | */ |
| 1737 | static int spu_mdesc_walk_arcs(struct mdesc_handle *mdesc, |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1738 | struct platform_device *dev, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1739 | u64 node, struct spu_queue *p, |
| 1740 | struct spu_queue **table) |
| 1741 | { |
| 1742 | u64 arc; |
| 1743 | |
| 1744 | mdesc_for_each_arc(arc, mdesc, node, MDESC_ARC_TYPE_BACK) { |
| 1745 | u64 tgt = mdesc_arc_target(mdesc, arc); |
| 1746 | const char *name = mdesc_node_name(mdesc, tgt); |
| 1747 | const u64 *id; |
| 1748 | |
| 1749 | if (strcmp(name, "cpu")) |
| 1750 | continue; |
| 1751 | id = mdesc_get_property(mdesc, tgt, "id", NULL); |
| 1752 | if (table[*id] != NULL) { |
| 1753 | dev_err(&dev->dev, "%s: SPU cpu slot already set.\n", |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1754 | dev->dev.of_node->full_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1755 | return -EINVAL; |
| 1756 | } |
Rusty Russell | f9b531f | 2015-03-05 10:49:16 +1030 | [diff] [blame] | 1757 | cpumask_set_cpu(*id, &p->sharing); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1758 | table[*id] = p; |
| 1759 | } |
| 1760 | return 0; |
| 1761 | } |
| 1762 | |
| 1763 | /* Process an 'exec-unit' MDESC node of type 'cwq'. */ |
| 1764 | static int handle_exec_unit(struct spu_mdesc_info *ip, struct list_head *list, |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1765 | struct platform_device *dev, struct mdesc_handle *mdesc, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1766 | u64 node, const char *iname, unsigned long q_type, |
| 1767 | irq_handler_t handler, struct spu_queue **table) |
| 1768 | { |
| 1769 | struct spu_queue *p; |
| 1770 | int err; |
| 1771 | |
| 1772 | p = kzalloc(sizeof(struct spu_queue), GFP_KERNEL); |
| 1773 | if (!p) { |
| 1774 | dev_err(&dev->dev, "%s: Could not allocate SPU queue.\n", |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1775 | dev->dev.of_node->full_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1776 | return -ENOMEM; |
| 1777 | } |
| 1778 | |
Rusty Russell | f9b531f | 2015-03-05 10:49:16 +1030 | [diff] [blame] | 1779 | cpumask_clear(&p->sharing); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1780 | spin_lock_init(&p->lock); |
| 1781 | p->q_type = q_type; |
| 1782 | INIT_LIST_HEAD(&p->jobs); |
| 1783 | list_add(&p->list, list); |
| 1784 | |
| 1785 | err = spu_mdesc_walk_arcs(mdesc, dev, node, p, table); |
| 1786 | if (err) |
| 1787 | return err; |
| 1788 | |
| 1789 | err = spu_queue_setup(p); |
| 1790 | if (err) |
| 1791 | return err; |
| 1792 | |
| 1793 | return spu_map_ino(dev, ip, iname, p, handler); |
| 1794 | } |
| 1795 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1796 | static int spu_mdesc_scan(struct mdesc_handle *mdesc, struct platform_device *dev, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1797 | struct spu_mdesc_info *ip, struct list_head *list, |
| 1798 | const char *exec_name, unsigned long q_type, |
| 1799 | irq_handler_t handler, struct spu_queue **table) |
| 1800 | { |
| 1801 | int err = 0; |
| 1802 | u64 node; |
| 1803 | |
| 1804 | mdesc_for_each_node_by_name(mdesc, node, "exec-unit") { |
| 1805 | const char *type; |
| 1806 | |
| 1807 | type = mdesc_get_property(mdesc, node, "type", NULL); |
| 1808 | if (!type || strcmp(type, exec_name)) |
| 1809 | continue; |
| 1810 | |
| 1811 | err = handle_exec_unit(ip, list, dev, mdesc, node, |
| 1812 | exec_name, q_type, handler, table); |
| 1813 | if (err) { |
| 1814 | spu_list_destroy(list); |
| 1815 | break; |
| 1816 | } |
| 1817 | } |
| 1818 | |
| 1819 | return err; |
| 1820 | } |
| 1821 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1822 | static int get_irq_props(struct mdesc_handle *mdesc, u64 node, |
| 1823 | struct spu_mdesc_info *ip) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1824 | { |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 1825 | const u64 *ino; |
| 1826 | int ino_len; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1827 | int i; |
| 1828 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1829 | ino = mdesc_get_property(mdesc, node, "ino", &ino_len); |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 1830 | if (!ino) { |
| 1831 | printk("NO 'ino'\n"); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1832 | return -ENODEV; |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 1833 | } |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1834 | |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 1835 | ip->num_intrs = ino_len / sizeof(u64); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1836 | ip->ino_table = kzalloc((sizeof(struct ino_blob) * |
| 1837 | ip->num_intrs), |
| 1838 | GFP_KERNEL); |
| 1839 | if (!ip->ino_table) |
| 1840 | return -ENOMEM; |
| 1841 | |
| 1842 | for (i = 0; i < ip->num_intrs; i++) { |
| 1843 | struct ino_blob *b = &ip->ino_table[i]; |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 1844 | b->intr = i + 1; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1845 | b->ino = ino[i]; |
| 1846 | } |
| 1847 | |
| 1848 | return 0; |
| 1849 | } |
| 1850 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1851 | static int grab_mdesc_irq_props(struct mdesc_handle *mdesc, |
| 1852 | struct platform_device *dev, |
| 1853 | struct spu_mdesc_info *ip, |
| 1854 | const char *node_name) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1855 | { |
| 1856 | const unsigned int *reg; |
| 1857 | u64 node; |
| 1858 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1859 | reg = of_get_property(dev->dev.of_node, "reg", NULL); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1860 | if (!reg) |
| 1861 | return -ENODEV; |
| 1862 | |
| 1863 | mdesc_for_each_node_by_name(mdesc, node, "virtual-device") { |
| 1864 | const char *name; |
| 1865 | const u64 *chdl; |
| 1866 | |
| 1867 | name = mdesc_get_property(mdesc, node, "name", NULL); |
| 1868 | if (!name || strcmp(name, node_name)) |
| 1869 | continue; |
| 1870 | chdl = mdesc_get_property(mdesc, node, "cfg-handle", NULL); |
| 1871 | if (!chdl || (*chdl != *reg)) |
| 1872 | continue; |
| 1873 | ip->cfg_handle = *chdl; |
| 1874 | return get_irq_props(mdesc, node, ip); |
| 1875 | } |
| 1876 | |
| 1877 | return -ENODEV; |
| 1878 | } |
| 1879 | |
| 1880 | static unsigned long n2_spu_hvapi_major; |
| 1881 | static unsigned long n2_spu_hvapi_minor; |
| 1882 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1883 | static int n2_spu_hvapi_register(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1884 | { |
| 1885 | int err; |
| 1886 | |
| 1887 | n2_spu_hvapi_major = 2; |
| 1888 | n2_spu_hvapi_minor = 0; |
| 1889 | |
| 1890 | err = sun4v_hvapi_register(HV_GRP_NCS, |
| 1891 | n2_spu_hvapi_major, |
| 1892 | &n2_spu_hvapi_minor); |
| 1893 | |
| 1894 | if (!err) |
| 1895 | pr_info("Registered NCS HVAPI version %lu.%lu\n", |
| 1896 | n2_spu_hvapi_major, |
| 1897 | n2_spu_hvapi_minor); |
| 1898 | |
| 1899 | return err; |
| 1900 | } |
| 1901 | |
| 1902 | static void n2_spu_hvapi_unregister(void) |
| 1903 | { |
| 1904 | sun4v_hvapi_unregister(HV_GRP_NCS); |
| 1905 | } |
| 1906 | |
| 1907 | static int global_ref; |
| 1908 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1909 | static int grab_global_resources(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1910 | { |
| 1911 | int err = 0; |
| 1912 | |
| 1913 | mutex_lock(&spu_lock); |
| 1914 | |
| 1915 | if (global_ref++) |
| 1916 | goto out; |
| 1917 | |
| 1918 | err = n2_spu_hvapi_register(); |
| 1919 | if (err) |
| 1920 | goto out; |
| 1921 | |
| 1922 | err = queue_cache_init(); |
| 1923 | if (err) |
| 1924 | goto out_hvapi_release; |
| 1925 | |
| 1926 | err = -ENOMEM; |
| 1927 | cpu_to_cwq = kzalloc(sizeof(struct spu_queue *) * NR_CPUS, |
| 1928 | GFP_KERNEL); |
| 1929 | if (!cpu_to_cwq) |
| 1930 | goto out_queue_cache_destroy; |
| 1931 | |
| 1932 | cpu_to_mau = kzalloc(sizeof(struct spu_queue *) * NR_CPUS, |
| 1933 | GFP_KERNEL); |
| 1934 | if (!cpu_to_mau) |
| 1935 | goto out_free_cwq_table; |
| 1936 | |
| 1937 | err = 0; |
| 1938 | |
| 1939 | out: |
| 1940 | if (err) |
| 1941 | global_ref--; |
| 1942 | mutex_unlock(&spu_lock); |
| 1943 | return err; |
| 1944 | |
| 1945 | out_free_cwq_table: |
| 1946 | kfree(cpu_to_cwq); |
| 1947 | cpu_to_cwq = NULL; |
| 1948 | |
| 1949 | out_queue_cache_destroy: |
| 1950 | queue_cache_destroy(); |
| 1951 | |
| 1952 | out_hvapi_release: |
| 1953 | n2_spu_hvapi_unregister(); |
| 1954 | goto out; |
| 1955 | } |
| 1956 | |
| 1957 | static void release_global_resources(void) |
| 1958 | { |
| 1959 | mutex_lock(&spu_lock); |
| 1960 | if (!--global_ref) { |
| 1961 | kfree(cpu_to_cwq); |
| 1962 | cpu_to_cwq = NULL; |
| 1963 | |
| 1964 | kfree(cpu_to_mau); |
| 1965 | cpu_to_mau = NULL; |
| 1966 | |
| 1967 | queue_cache_destroy(); |
| 1968 | n2_spu_hvapi_unregister(); |
| 1969 | } |
| 1970 | mutex_unlock(&spu_lock); |
| 1971 | } |
| 1972 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1973 | static struct n2_crypto *alloc_n2cp(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1974 | { |
| 1975 | struct n2_crypto *np = kzalloc(sizeof(struct n2_crypto), GFP_KERNEL); |
| 1976 | |
| 1977 | if (np) |
| 1978 | INIT_LIST_HEAD(&np->cwq_list); |
| 1979 | |
| 1980 | return np; |
| 1981 | } |
| 1982 | |
| 1983 | static void free_n2cp(struct n2_crypto *np) |
| 1984 | { |
| 1985 | if (np->cwq_info.ino_table) { |
| 1986 | kfree(np->cwq_info.ino_table); |
| 1987 | np->cwq_info.ino_table = NULL; |
| 1988 | } |
| 1989 | |
| 1990 | kfree(np); |
| 1991 | } |
| 1992 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1993 | static void n2_spu_driver_version(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1994 | { |
| 1995 | static int n2_spu_version_printed; |
| 1996 | |
| 1997 | if (n2_spu_version_printed++ == 0) |
| 1998 | pr_info("%s", version); |
| 1999 | } |
| 2000 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2001 | static int n2_crypto_probe(struct platform_device *dev) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2002 | { |
| 2003 | struct mdesc_handle *mdesc; |
| 2004 | const char *full_name; |
| 2005 | struct n2_crypto *np; |
| 2006 | int err; |
| 2007 | |
| 2008 | n2_spu_driver_version(); |
| 2009 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2010 | full_name = dev->dev.of_node->full_name; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2011 | pr_info("Found N2CP at %s\n", full_name); |
| 2012 | |
| 2013 | np = alloc_n2cp(); |
| 2014 | if (!np) { |
| 2015 | dev_err(&dev->dev, "%s: Unable to allocate n2cp.\n", |
| 2016 | full_name); |
| 2017 | return -ENOMEM; |
| 2018 | } |
| 2019 | |
| 2020 | err = grab_global_resources(); |
| 2021 | if (err) { |
| 2022 | dev_err(&dev->dev, "%s: Unable to grab " |
| 2023 | "global resources.\n", full_name); |
| 2024 | goto out_free_n2cp; |
| 2025 | } |
| 2026 | |
| 2027 | mdesc = mdesc_grab(); |
| 2028 | |
| 2029 | if (!mdesc) { |
| 2030 | dev_err(&dev->dev, "%s: Unable to grab MDESC.\n", |
| 2031 | full_name); |
| 2032 | err = -ENODEV; |
| 2033 | goto out_free_global; |
| 2034 | } |
| 2035 | err = grab_mdesc_irq_props(mdesc, dev, &np->cwq_info, "n2cp"); |
| 2036 | if (err) { |
| 2037 | dev_err(&dev->dev, "%s: Unable to grab IRQ props.\n", |
| 2038 | full_name); |
| 2039 | mdesc_release(mdesc); |
| 2040 | goto out_free_global; |
| 2041 | } |
| 2042 | |
| 2043 | err = spu_mdesc_scan(mdesc, dev, &np->cwq_info, &np->cwq_list, |
| 2044 | "cwq", HV_NCS_QTYPE_CWQ, cwq_intr, |
| 2045 | cpu_to_cwq); |
| 2046 | mdesc_release(mdesc); |
| 2047 | |
| 2048 | if (err) { |
| 2049 | dev_err(&dev->dev, "%s: CWQ MDESC scan failed.\n", |
| 2050 | full_name); |
| 2051 | goto out_free_global; |
| 2052 | } |
| 2053 | |
| 2054 | err = n2_register_algs(); |
| 2055 | if (err) { |
| 2056 | dev_err(&dev->dev, "%s: Unable to register algorithms.\n", |
| 2057 | full_name); |
| 2058 | goto out_free_spu_list; |
| 2059 | } |
| 2060 | |
| 2061 | dev_set_drvdata(&dev->dev, np); |
| 2062 | |
| 2063 | return 0; |
| 2064 | |
| 2065 | out_free_spu_list: |
| 2066 | spu_list_destroy(&np->cwq_list); |
| 2067 | |
| 2068 | out_free_global: |
| 2069 | release_global_resources(); |
| 2070 | |
| 2071 | out_free_n2cp: |
| 2072 | free_n2cp(np); |
| 2073 | |
| 2074 | return err; |
| 2075 | } |
| 2076 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2077 | static int n2_crypto_remove(struct platform_device *dev) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2078 | { |
| 2079 | struct n2_crypto *np = dev_get_drvdata(&dev->dev); |
| 2080 | |
| 2081 | n2_unregister_algs(); |
| 2082 | |
| 2083 | spu_list_destroy(&np->cwq_list); |
| 2084 | |
| 2085 | release_global_resources(); |
| 2086 | |
| 2087 | free_n2cp(np); |
| 2088 | |
| 2089 | return 0; |
| 2090 | } |
| 2091 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2092 | static struct n2_mau *alloc_ncp(void) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2093 | { |
| 2094 | struct n2_mau *mp = kzalloc(sizeof(struct n2_mau), GFP_KERNEL); |
| 2095 | |
| 2096 | if (mp) |
| 2097 | INIT_LIST_HEAD(&mp->mau_list); |
| 2098 | |
| 2099 | return mp; |
| 2100 | } |
| 2101 | |
| 2102 | static void free_ncp(struct n2_mau *mp) |
| 2103 | { |
| 2104 | if (mp->mau_info.ino_table) { |
| 2105 | kfree(mp->mau_info.ino_table); |
| 2106 | mp->mau_info.ino_table = NULL; |
| 2107 | } |
| 2108 | |
| 2109 | kfree(mp); |
| 2110 | } |
| 2111 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2112 | static int n2_mau_probe(struct platform_device *dev) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2113 | { |
| 2114 | struct mdesc_handle *mdesc; |
| 2115 | const char *full_name; |
| 2116 | struct n2_mau *mp; |
| 2117 | int err; |
| 2118 | |
| 2119 | n2_spu_driver_version(); |
| 2120 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2121 | full_name = dev->dev.of_node->full_name; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2122 | pr_info("Found NCP at %s\n", full_name); |
| 2123 | |
| 2124 | mp = alloc_ncp(); |
| 2125 | if (!mp) { |
| 2126 | dev_err(&dev->dev, "%s: Unable to allocate ncp.\n", |
| 2127 | full_name); |
| 2128 | return -ENOMEM; |
| 2129 | } |
| 2130 | |
| 2131 | err = grab_global_resources(); |
| 2132 | if (err) { |
| 2133 | dev_err(&dev->dev, "%s: Unable to grab " |
| 2134 | "global resources.\n", full_name); |
| 2135 | goto out_free_ncp; |
| 2136 | } |
| 2137 | |
| 2138 | mdesc = mdesc_grab(); |
| 2139 | |
| 2140 | if (!mdesc) { |
| 2141 | dev_err(&dev->dev, "%s: Unable to grab MDESC.\n", |
| 2142 | full_name); |
| 2143 | err = -ENODEV; |
| 2144 | goto out_free_global; |
| 2145 | } |
| 2146 | |
| 2147 | err = grab_mdesc_irq_props(mdesc, dev, &mp->mau_info, "ncp"); |
| 2148 | if (err) { |
| 2149 | dev_err(&dev->dev, "%s: Unable to grab IRQ props.\n", |
| 2150 | full_name); |
| 2151 | mdesc_release(mdesc); |
| 2152 | goto out_free_global; |
| 2153 | } |
| 2154 | |
| 2155 | err = spu_mdesc_scan(mdesc, dev, &mp->mau_info, &mp->mau_list, |
| 2156 | "mau", HV_NCS_QTYPE_MAU, mau_intr, |
| 2157 | cpu_to_mau); |
| 2158 | mdesc_release(mdesc); |
| 2159 | |
| 2160 | if (err) { |
| 2161 | dev_err(&dev->dev, "%s: MAU MDESC scan failed.\n", |
| 2162 | full_name); |
| 2163 | goto out_free_global; |
| 2164 | } |
| 2165 | |
| 2166 | dev_set_drvdata(&dev->dev, mp); |
| 2167 | |
| 2168 | return 0; |
| 2169 | |
| 2170 | out_free_global: |
| 2171 | release_global_resources(); |
| 2172 | |
| 2173 | out_free_ncp: |
| 2174 | free_ncp(mp); |
| 2175 | |
| 2176 | return err; |
| 2177 | } |
| 2178 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2179 | static int n2_mau_remove(struct platform_device *dev) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2180 | { |
| 2181 | struct n2_mau *mp = dev_get_drvdata(&dev->dev); |
| 2182 | |
| 2183 | spu_list_destroy(&mp->mau_list); |
| 2184 | |
| 2185 | release_global_resources(); |
| 2186 | |
| 2187 | free_ncp(mp); |
| 2188 | |
| 2189 | return 0; |
| 2190 | } |
| 2191 | |
| 2192 | static struct of_device_id n2_crypto_match[] = { |
| 2193 | { |
| 2194 | .name = "n2cp", |
| 2195 | .compatible = "SUNW,n2-cwq", |
| 2196 | }, |
| 2197 | { |
| 2198 | .name = "n2cp", |
| 2199 | .compatible = "SUNW,vf-cwq", |
| 2200 | }, |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 2201 | { |
| 2202 | .name = "n2cp", |
| 2203 | .compatible = "SUNW,kt-cwq", |
| 2204 | }, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2205 | {}, |
| 2206 | }; |
| 2207 | |
| 2208 | MODULE_DEVICE_TABLE(of, n2_crypto_match); |
| 2209 | |
Grant Likely | 4ebb24f | 2011-02-22 20:01:33 -0700 | [diff] [blame] | 2210 | static struct platform_driver n2_crypto_driver = { |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2211 | .driver = { |
| 2212 | .name = "n2cp", |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2213 | .of_match_table = n2_crypto_match, |
| 2214 | }, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2215 | .probe = n2_crypto_probe, |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2216 | .remove = n2_crypto_remove, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2217 | }; |
| 2218 | |
| 2219 | static struct of_device_id n2_mau_match[] = { |
| 2220 | { |
| 2221 | .name = "ncp", |
| 2222 | .compatible = "SUNW,n2-mau", |
| 2223 | }, |
| 2224 | { |
| 2225 | .name = "ncp", |
| 2226 | .compatible = "SUNW,vf-mau", |
| 2227 | }, |
David S. Miller | eb7caf3 | 2011-07-28 01:30:07 -0700 | [diff] [blame] | 2228 | { |
| 2229 | .name = "ncp", |
| 2230 | .compatible = "SUNW,kt-mau", |
| 2231 | }, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2232 | {}, |
| 2233 | }; |
| 2234 | |
| 2235 | MODULE_DEVICE_TABLE(of, n2_mau_match); |
| 2236 | |
Grant Likely | 4ebb24f | 2011-02-22 20:01:33 -0700 | [diff] [blame] | 2237 | static struct platform_driver n2_mau_driver = { |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2238 | .driver = { |
| 2239 | .name = "ncp", |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2240 | .of_match_table = n2_mau_match, |
| 2241 | }, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2242 | .probe = n2_mau_probe, |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2243 | .remove = n2_mau_remove, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2244 | }; |
| 2245 | |
| 2246 | static int __init n2_init(void) |
| 2247 | { |
Grant Likely | 4ebb24f | 2011-02-22 20:01:33 -0700 | [diff] [blame] | 2248 | int err = platform_driver_register(&n2_crypto_driver); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2249 | |
| 2250 | if (!err) { |
Grant Likely | 4ebb24f | 2011-02-22 20:01:33 -0700 | [diff] [blame] | 2251 | err = platform_driver_register(&n2_mau_driver); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2252 | if (err) |
Grant Likely | 4ebb24f | 2011-02-22 20:01:33 -0700 | [diff] [blame] | 2253 | platform_driver_unregister(&n2_crypto_driver); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2254 | } |
| 2255 | return err; |
| 2256 | } |
| 2257 | |
| 2258 | static void __exit n2_exit(void) |
| 2259 | { |
Grant Likely | 4ebb24f | 2011-02-22 20:01:33 -0700 | [diff] [blame] | 2260 | platform_driver_unregister(&n2_mau_driver); |
| 2261 | platform_driver_unregister(&n2_crypto_driver); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2262 | } |
| 2263 | |
| 2264 | module_init(n2_init); |
| 2265 | module_exit(n2_exit); |