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 | * |
| 3 | * Copyright (C) 2010 David S. Miller <davem@davemloft.net> |
| 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" |
| 34 | #define DRV_MODULE_VERSION "0.1" |
| 35 | #define DRV_MODULE_RELDATE "April 29, 2010" |
| 36 | |
| 37 | static char version[] __devinitdata = |
| 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 | |
| 45 | #define N2_CRA_PRIORITY 300 |
| 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; |
| 249 | struct ahash_alg alg; |
| 250 | }; |
| 251 | |
| 252 | static inline struct n2_ahash_alg *n2_ahash_alg(struct crypto_tfm *tfm) |
| 253 | { |
| 254 | struct crypto_alg *alg = tfm->__crt_alg; |
| 255 | struct ahash_alg *ahash_alg; |
| 256 | |
| 257 | ahash_alg = container_of(alg, struct ahash_alg, halg.base); |
| 258 | |
| 259 | return container_of(ahash_alg, struct n2_ahash_alg, alg); |
| 260 | } |
| 261 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 262 | struct n2_hash_ctx { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 263 | struct crypto_ahash *fallback_tfm; |
| 264 | }; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 265 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 266 | struct n2_hash_req_ctx { |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 267 | union { |
| 268 | struct md5_state md5; |
| 269 | struct sha1_state sha1; |
| 270 | struct sha256_state sha256; |
| 271 | } u; |
| 272 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 273 | struct ahash_request fallback_req; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 274 | }; |
| 275 | |
| 276 | static int n2_hash_async_init(struct ahash_request *req) |
| 277 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 278 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 279 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 280 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 281 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 282 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 283 | 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] | 284 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 285 | return crypto_ahash_init(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | static int n2_hash_async_update(struct ahash_request *req) |
| 289 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 290 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 291 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 292 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 293 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 294 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 295 | rctx->fallback_req.base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 296 | rctx->fallback_req.nbytes = req->nbytes; |
| 297 | rctx->fallback_req.src = req->src; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 298 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 299 | return crypto_ahash_update(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | static int n2_hash_async_final(struct ahash_request *req) |
| 303 | { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 304 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 305 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 306 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 307 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 308 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 309 | rctx->fallback_req.base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 310 | rctx->fallback_req.result = req->result; |
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_final(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | static int n2_hash_async_finup(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; |
| 325 | rctx->fallback_req.result = req->result; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 326 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 327 | return crypto_ahash_finup(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | static int n2_hash_cra_init(struct crypto_tfm *tfm) |
| 331 | { |
| 332 | const char *fallback_driver_name = tfm->__crt_alg->cra_name; |
| 333 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); |
| 334 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(ahash); |
| 335 | struct crypto_ahash *fallback_tfm; |
| 336 | int err; |
| 337 | |
| 338 | fallback_tfm = crypto_alloc_ahash(fallback_driver_name, 0, |
| 339 | CRYPTO_ALG_NEED_FALLBACK); |
| 340 | if (IS_ERR(fallback_tfm)) { |
| 341 | pr_warning("Fallback driver '%s' could not be loaded!\n", |
| 342 | fallback_driver_name); |
| 343 | err = PTR_ERR(fallback_tfm); |
| 344 | goto out; |
| 345 | } |
| 346 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 347 | crypto_ahash_set_reqsize(ahash, (sizeof(struct n2_hash_req_ctx) + |
| 348 | crypto_ahash_reqsize(fallback_tfm))); |
| 349 | |
| 350 | ctx->fallback_tfm = fallback_tfm; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 351 | return 0; |
| 352 | |
| 353 | out: |
| 354 | return err; |
| 355 | } |
| 356 | |
| 357 | static void n2_hash_cra_exit(struct crypto_tfm *tfm) |
| 358 | { |
| 359 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); |
| 360 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(ahash); |
| 361 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 362 | crypto_free_ahash(ctx->fallback_tfm); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | static unsigned long wait_for_tail(struct spu_queue *qp) |
| 366 | { |
| 367 | unsigned long head, hv_ret; |
| 368 | |
| 369 | do { |
| 370 | hv_ret = sun4v_ncs_gethead(qp->qhandle, &head); |
| 371 | if (hv_ret != HV_EOK) { |
| 372 | pr_err("Hypervisor error on gethead\n"); |
| 373 | break; |
| 374 | } |
| 375 | if (head == qp->tail) { |
| 376 | qp->head = head; |
| 377 | break; |
| 378 | } |
| 379 | } while (1); |
| 380 | return hv_ret; |
| 381 | } |
| 382 | |
| 383 | static unsigned long submit_and_wait_for_tail(struct spu_queue *qp, |
| 384 | struct cwq_initial_entry *ent) |
| 385 | { |
| 386 | unsigned long hv_ret = spu_queue_submit(qp, ent); |
| 387 | |
| 388 | if (hv_ret == HV_EOK) |
| 389 | hv_ret = wait_for_tail(qp); |
| 390 | |
| 391 | return hv_ret; |
| 392 | } |
| 393 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 394 | static int n2_do_async_digest(struct ahash_request *req, |
| 395 | unsigned int auth_type, unsigned int digest_size, |
| 396 | unsigned int result_size, void *hash_loc) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 397 | { |
| 398 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 399 | struct cwq_initial_entry *ent; |
| 400 | struct crypto_hash_walk walk; |
| 401 | struct spu_queue *qp; |
| 402 | unsigned long flags; |
| 403 | int err = -ENODEV; |
| 404 | int nbytes, cpu; |
| 405 | |
| 406 | /* The total effective length of the operation may not |
| 407 | * exceed 2^16. |
| 408 | */ |
| 409 | if (unlikely(req->nbytes > (1 << 16))) { |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 410 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 65a23d6 | 2010-05-22 01:11:03 -0700 | [diff] [blame] | 411 | struct n2_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 412 | |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 413 | ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm); |
| 414 | rctx->fallback_req.base.flags = |
| 415 | req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
| 416 | rctx->fallback_req.nbytes = req->nbytes; |
| 417 | rctx->fallback_req.src = req->src; |
| 418 | rctx->fallback_req.result = req->result; |
| 419 | |
| 420 | return crypto_ahash_digest(&rctx->fallback_req); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 421 | } |
| 422 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 423 | nbytes = crypto_hash_walk_first(req, &walk); |
| 424 | |
| 425 | cpu = get_cpu(); |
| 426 | qp = cpu_to_cwq[cpu]; |
| 427 | if (!qp) |
| 428 | goto out; |
| 429 | |
| 430 | spin_lock_irqsave(&qp->lock, flags); |
| 431 | |
| 432 | /* XXX can do better, improve this later by doing a by-hand scatterlist |
| 433 | * XXX walk, etc. |
| 434 | */ |
| 435 | ent = qp->q + qp->tail; |
| 436 | |
| 437 | ent->control = control_word_base(nbytes, 0, 0, |
| 438 | auth_type, digest_size, |
| 439 | false, true, false, false, |
| 440 | OPCODE_INPLACE_BIT | |
| 441 | OPCODE_AUTH_MAC); |
| 442 | ent->src_addr = __pa(walk.data); |
| 443 | ent->auth_key_addr = 0UL; |
| 444 | ent->auth_iv_addr = __pa(hash_loc); |
| 445 | ent->final_auth_state_addr = 0UL; |
| 446 | ent->enc_key_addr = 0UL; |
| 447 | ent->enc_iv_addr = 0UL; |
| 448 | ent->dest_addr = __pa(hash_loc); |
| 449 | |
| 450 | nbytes = crypto_hash_walk_done(&walk, 0); |
| 451 | while (nbytes > 0) { |
| 452 | ent = spu_queue_next(qp, ent); |
| 453 | |
| 454 | ent->control = (nbytes - 1); |
| 455 | ent->src_addr = __pa(walk.data); |
| 456 | ent->auth_key_addr = 0UL; |
| 457 | ent->auth_iv_addr = 0UL; |
| 458 | ent->final_auth_state_addr = 0UL; |
| 459 | ent->enc_key_addr = 0UL; |
| 460 | ent->enc_iv_addr = 0UL; |
| 461 | ent->dest_addr = 0UL; |
| 462 | |
| 463 | nbytes = crypto_hash_walk_done(&walk, 0); |
| 464 | } |
| 465 | ent->control |= CONTROL_END_OF_BLOCK; |
| 466 | |
| 467 | if (submit_and_wait_for_tail(qp, ent) != HV_EOK) |
| 468 | err = -EINVAL; |
| 469 | else |
| 470 | err = 0; |
| 471 | |
| 472 | spin_unlock_irqrestore(&qp->lock, flags); |
| 473 | |
| 474 | if (!err) |
| 475 | memcpy(req->result, hash_loc, result_size); |
| 476 | out: |
| 477 | put_cpu(); |
| 478 | |
| 479 | return err; |
| 480 | } |
| 481 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 482 | static int n2_hash_async_digest(struct ahash_request *req) |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 483 | { |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 484 | struct n2_ahash_alg *n2alg = n2_ahash_alg(req->base.tfm); |
David S. Miller | c9aa55e | 2010-05-22 01:09:04 -0700 | [diff] [blame] | 485 | struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 486 | int ds; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 487 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 488 | ds = n2alg->digest_size; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 489 | if (unlikely(req->nbytes == 0)) { |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 490 | memcpy(req->result, n2alg->hash_zero, ds); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 491 | return 0; |
| 492 | } |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 493 | memcpy(&rctx->u, n2alg->hash_init, n2alg->hw_op_hashsz); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 494 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 495 | return n2_do_async_digest(req, n2alg->auth_type, |
| 496 | n2alg->hw_op_hashsz, ds, |
| 497 | &rctx->u); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | struct n2_cipher_context { |
| 501 | int key_len; |
| 502 | int enc_type; |
| 503 | union { |
| 504 | u8 aes[AES_MAX_KEY_SIZE]; |
| 505 | u8 des[DES_KEY_SIZE]; |
| 506 | u8 des3[3 * DES_KEY_SIZE]; |
| 507 | u8 arc4[258]; /* S-box, X, Y */ |
| 508 | } key; |
| 509 | }; |
| 510 | |
| 511 | #define N2_CHUNK_ARR_LEN 16 |
| 512 | |
| 513 | struct n2_crypto_chunk { |
| 514 | struct list_head entry; |
| 515 | unsigned long iv_paddr : 44; |
| 516 | unsigned long arr_len : 20; |
| 517 | unsigned long dest_paddr; |
| 518 | unsigned long dest_final; |
| 519 | struct { |
| 520 | unsigned long src_paddr : 44; |
| 521 | unsigned long src_len : 20; |
| 522 | } arr[N2_CHUNK_ARR_LEN]; |
| 523 | }; |
| 524 | |
| 525 | struct n2_request_context { |
| 526 | struct ablkcipher_walk walk; |
| 527 | struct list_head chunk_list; |
| 528 | struct n2_crypto_chunk chunk; |
| 529 | u8 temp_iv[16]; |
| 530 | }; |
| 531 | |
| 532 | /* The SPU allows some level of flexibility for partial cipher blocks |
| 533 | * being specified in a descriptor. |
| 534 | * |
| 535 | * It merely requires that every descriptor's length field is at least |
| 536 | * as large as the cipher block size. This means that a cipher block |
| 537 | * can span at most 2 descriptors. However, this does not allow a |
| 538 | * partial block to span into the final descriptor as that would |
| 539 | * violate the rule (since every descriptor's length must be at lest |
| 540 | * the block size). So, for example, assuming an 8 byte block size: |
| 541 | * |
| 542 | * 0xe --> 0xa --> 0x8 |
| 543 | * |
| 544 | * is a valid length sequence, whereas: |
| 545 | * |
| 546 | * 0xe --> 0xb --> 0x7 |
| 547 | * |
| 548 | * is not a valid sequence. |
| 549 | */ |
| 550 | |
| 551 | struct n2_cipher_alg { |
| 552 | struct list_head entry; |
| 553 | u8 enc_type; |
| 554 | struct crypto_alg alg; |
| 555 | }; |
| 556 | |
| 557 | static inline struct n2_cipher_alg *n2_cipher_alg(struct crypto_tfm *tfm) |
| 558 | { |
| 559 | struct crypto_alg *alg = tfm->__crt_alg; |
| 560 | |
| 561 | return container_of(alg, struct n2_cipher_alg, alg); |
| 562 | } |
| 563 | |
| 564 | struct n2_cipher_request_context { |
| 565 | struct ablkcipher_walk walk; |
| 566 | }; |
| 567 | |
| 568 | static int n2_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 569 | unsigned int keylen) |
| 570 | { |
| 571 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 572 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 573 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 574 | |
| 575 | ctx->enc_type = (n2alg->enc_type & ENC_TYPE_CHAINING_MASK); |
| 576 | |
| 577 | switch (keylen) { |
| 578 | case AES_KEYSIZE_128: |
| 579 | ctx->enc_type |= ENC_TYPE_ALG_AES128; |
| 580 | break; |
| 581 | case AES_KEYSIZE_192: |
| 582 | ctx->enc_type |= ENC_TYPE_ALG_AES192; |
| 583 | break; |
| 584 | case AES_KEYSIZE_256: |
| 585 | ctx->enc_type |= ENC_TYPE_ALG_AES256; |
| 586 | break; |
| 587 | default: |
| 588 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 589 | return -EINVAL; |
| 590 | } |
| 591 | |
| 592 | ctx->key_len = keylen; |
| 593 | memcpy(ctx->key.aes, key, keylen); |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static int n2_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 598 | unsigned int keylen) |
| 599 | { |
| 600 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 601 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 602 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 603 | u32 tmp[DES_EXPKEY_WORDS]; |
| 604 | int err; |
| 605 | |
| 606 | ctx->enc_type = n2alg->enc_type; |
| 607 | |
| 608 | if (keylen != DES_KEY_SIZE) { |
| 609 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 610 | return -EINVAL; |
| 611 | } |
| 612 | |
| 613 | err = des_ekey(tmp, key); |
| 614 | if (err == 0 && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) { |
| 615 | tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; |
| 616 | return -EINVAL; |
| 617 | } |
| 618 | |
| 619 | ctx->key_len = keylen; |
| 620 | memcpy(ctx->key.des, key, keylen); |
| 621 | return 0; |
| 622 | } |
| 623 | |
| 624 | static int n2_3des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 625 | unsigned int keylen) |
| 626 | { |
| 627 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 628 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 629 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 630 | |
| 631 | ctx->enc_type = n2alg->enc_type; |
| 632 | |
| 633 | if (keylen != (3 * DES_KEY_SIZE)) { |
| 634 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 635 | return -EINVAL; |
| 636 | } |
| 637 | ctx->key_len = keylen; |
| 638 | memcpy(ctx->key.des3, key, keylen); |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | static int n2_arc4_setkey(struct crypto_ablkcipher *cipher, const u8 *key, |
| 643 | unsigned int keylen) |
| 644 | { |
| 645 | struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); |
| 646 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 647 | struct n2_cipher_alg *n2alg = n2_cipher_alg(tfm); |
| 648 | u8 *s = ctx->key.arc4; |
| 649 | u8 *x = s + 256; |
| 650 | u8 *y = x + 1; |
| 651 | int i, j, k; |
| 652 | |
| 653 | ctx->enc_type = n2alg->enc_type; |
| 654 | |
| 655 | j = k = 0; |
| 656 | *x = 0; |
| 657 | *y = 0; |
| 658 | for (i = 0; i < 256; i++) |
| 659 | s[i] = i; |
| 660 | for (i = 0; i < 256; i++) { |
| 661 | u8 a = s[i]; |
| 662 | j = (j + key[k] + a) & 0xff; |
| 663 | s[i] = s[j]; |
| 664 | s[j] = a; |
| 665 | if (++k >= keylen) |
| 666 | k = 0; |
| 667 | } |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | static inline int cipher_descriptor_len(int nbytes, unsigned int block_size) |
| 673 | { |
| 674 | int this_len = nbytes; |
| 675 | |
| 676 | this_len -= (nbytes & (block_size - 1)); |
| 677 | return this_len > (1 << 16) ? (1 << 16) : this_len; |
| 678 | } |
| 679 | |
| 680 | static int __n2_crypt_chunk(struct crypto_tfm *tfm, struct n2_crypto_chunk *cp, |
| 681 | struct spu_queue *qp, bool encrypt) |
| 682 | { |
| 683 | struct n2_cipher_context *ctx = crypto_tfm_ctx(tfm); |
| 684 | struct cwq_initial_entry *ent; |
| 685 | bool in_place; |
| 686 | int i; |
| 687 | |
| 688 | ent = spu_queue_alloc(qp, cp->arr_len); |
| 689 | if (!ent) { |
| 690 | pr_info("queue_alloc() of %d fails\n", |
| 691 | cp->arr_len); |
| 692 | return -EBUSY; |
| 693 | } |
| 694 | |
| 695 | in_place = (cp->dest_paddr == cp->arr[0].src_paddr); |
| 696 | |
| 697 | ent->control = control_word_base(cp->arr[0].src_len, |
| 698 | 0, ctx->enc_type, 0, 0, |
| 699 | false, true, false, encrypt, |
| 700 | OPCODE_ENCRYPT | |
| 701 | (in_place ? OPCODE_INPLACE_BIT : 0)); |
| 702 | ent->src_addr = cp->arr[0].src_paddr; |
| 703 | ent->auth_key_addr = 0UL; |
| 704 | ent->auth_iv_addr = 0UL; |
| 705 | ent->final_auth_state_addr = 0UL; |
| 706 | ent->enc_key_addr = __pa(&ctx->key); |
| 707 | ent->enc_iv_addr = cp->iv_paddr; |
| 708 | ent->dest_addr = (in_place ? 0UL : cp->dest_paddr); |
| 709 | |
| 710 | for (i = 1; i < cp->arr_len; i++) { |
| 711 | ent = spu_queue_next(qp, ent); |
| 712 | |
| 713 | ent->control = cp->arr[i].src_len - 1; |
| 714 | ent->src_addr = cp->arr[i].src_paddr; |
| 715 | ent->auth_key_addr = 0UL; |
| 716 | ent->auth_iv_addr = 0UL; |
| 717 | ent->final_auth_state_addr = 0UL; |
| 718 | ent->enc_key_addr = 0UL; |
| 719 | ent->enc_iv_addr = 0UL; |
| 720 | ent->dest_addr = 0UL; |
| 721 | } |
| 722 | ent->control |= CONTROL_END_OF_BLOCK; |
| 723 | |
| 724 | return (spu_queue_submit(qp, ent) != HV_EOK) ? -EINVAL : 0; |
| 725 | } |
| 726 | |
| 727 | static int n2_compute_chunks(struct ablkcipher_request *req) |
| 728 | { |
| 729 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 730 | struct ablkcipher_walk *walk = &rctx->walk; |
| 731 | struct n2_crypto_chunk *chunk; |
| 732 | unsigned long dest_prev; |
| 733 | unsigned int tot_len; |
| 734 | bool prev_in_place; |
| 735 | int err, nbytes; |
| 736 | |
| 737 | ablkcipher_walk_init(walk, req->dst, req->src, req->nbytes); |
| 738 | err = ablkcipher_walk_phys(req, walk); |
| 739 | if (err) |
| 740 | return err; |
| 741 | |
| 742 | INIT_LIST_HEAD(&rctx->chunk_list); |
| 743 | |
| 744 | chunk = &rctx->chunk; |
| 745 | INIT_LIST_HEAD(&chunk->entry); |
| 746 | |
| 747 | chunk->iv_paddr = 0UL; |
| 748 | chunk->arr_len = 0; |
| 749 | chunk->dest_paddr = 0UL; |
| 750 | |
| 751 | prev_in_place = false; |
| 752 | dest_prev = ~0UL; |
| 753 | tot_len = 0; |
| 754 | |
| 755 | while ((nbytes = walk->nbytes) != 0) { |
| 756 | unsigned long dest_paddr, src_paddr; |
| 757 | bool in_place; |
| 758 | int this_len; |
| 759 | |
| 760 | src_paddr = (page_to_phys(walk->src.page) + |
| 761 | walk->src.offset); |
| 762 | dest_paddr = (page_to_phys(walk->dst.page) + |
| 763 | walk->dst.offset); |
| 764 | in_place = (src_paddr == dest_paddr); |
| 765 | this_len = cipher_descriptor_len(nbytes, walk->blocksize); |
| 766 | |
| 767 | if (chunk->arr_len != 0) { |
| 768 | if (in_place != prev_in_place || |
| 769 | (!prev_in_place && |
| 770 | dest_paddr != dest_prev) || |
| 771 | chunk->arr_len == N2_CHUNK_ARR_LEN || |
| 772 | tot_len + this_len > (1 << 16)) { |
| 773 | chunk->dest_final = dest_prev; |
| 774 | list_add_tail(&chunk->entry, |
| 775 | &rctx->chunk_list); |
| 776 | chunk = kzalloc(sizeof(*chunk), GFP_ATOMIC); |
| 777 | if (!chunk) { |
| 778 | err = -ENOMEM; |
| 779 | break; |
| 780 | } |
| 781 | INIT_LIST_HEAD(&chunk->entry); |
| 782 | } |
| 783 | } |
| 784 | if (chunk->arr_len == 0) { |
| 785 | chunk->dest_paddr = dest_paddr; |
| 786 | tot_len = 0; |
| 787 | } |
| 788 | chunk->arr[chunk->arr_len].src_paddr = src_paddr; |
| 789 | chunk->arr[chunk->arr_len].src_len = this_len; |
| 790 | chunk->arr_len++; |
| 791 | |
| 792 | dest_prev = dest_paddr + this_len; |
| 793 | prev_in_place = in_place; |
| 794 | tot_len += this_len; |
| 795 | |
| 796 | err = ablkcipher_walk_done(req, walk, nbytes - this_len); |
| 797 | if (err) |
| 798 | break; |
| 799 | } |
| 800 | if (!err && chunk->arr_len != 0) { |
| 801 | chunk->dest_final = dest_prev; |
| 802 | list_add_tail(&chunk->entry, &rctx->chunk_list); |
| 803 | } |
| 804 | |
| 805 | return err; |
| 806 | } |
| 807 | |
| 808 | static void n2_chunk_complete(struct ablkcipher_request *req, void *final_iv) |
| 809 | { |
| 810 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 811 | struct n2_crypto_chunk *c, *tmp; |
| 812 | |
| 813 | if (final_iv) |
| 814 | memcpy(rctx->walk.iv, final_iv, rctx->walk.blocksize); |
| 815 | |
| 816 | ablkcipher_walk_complete(&rctx->walk); |
| 817 | list_for_each_entry_safe(c, tmp, &rctx->chunk_list, entry) { |
| 818 | list_del(&c->entry); |
| 819 | if (unlikely(c != &rctx->chunk)) |
| 820 | kfree(c); |
| 821 | } |
| 822 | |
| 823 | } |
| 824 | |
| 825 | static int n2_do_ecb(struct ablkcipher_request *req, bool encrypt) |
| 826 | { |
| 827 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 828 | struct crypto_tfm *tfm = req->base.tfm; |
| 829 | int err = n2_compute_chunks(req); |
| 830 | struct n2_crypto_chunk *c, *tmp; |
| 831 | unsigned long flags, hv_ret; |
| 832 | struct spu_queue *qp; |
| 833 | |
| 834 | if (err) |
| 835 | return err; |
| 836 | |
| 837 | qp = cpu_to_cwq[get_cpu()]; |
| 838 | err = -ENODEV; |
| 839 | if (!qp) |
| 840 | goto out; |
| 841 | |
| 842 | spin_lock_irqsave(&qp->lock, flags); |
| 843 | |
| 844 | list_for_each_entry_safe(c, tmp, &rctx->chunk_list, entry) { |
| 845 | err = __n2_crypt_chunk(tfm, c, qp, encrypt); |
| 846 | if (err) |
| 847 | break; |
| 848 | list_del(&c->entry); |
| 849 | if (unlikely(c != &rctx->chunk)) |
| 850 | kfree(c); |
| 851 | } |
| 852 | if (!err) { |
| 853 | hv_ret = wait_for_tail(qp); |
| 854 | if (hv_ret != HV_EOK) |
| 855 | err = -EINVAL; |
| 856 | } |
| 857 | |
| 858 | spin_unlock_irqrestore(&qp->lock, flags); |
| 859 | |
| 860 | put_cpu(); |
| 861 | |
| 862 | out: |
| 863 | n2_chunk_complete(req, NULL); |
| 864 | return err; |
| 865 | } |
| 866 | |
| 867 | static int n2_encrypt_ecb(struct ablkcipher_request *req) |
| 868 | { |
| 869 | return n2_do_ecb(req, true); |
| 870 | } |
| 871 | |
| 872 | static int n2_decrypt_ecb(struct ablkcipher_request *req) |
| 873 | { |
| 874 | return n2_do_ecb(req, false); |
| 875 | } |
| 876 | |
| 877 | static int n2_do_chaining(struct ablkcipher_request *req, bool encrypt) |
| 878 | { |
| 879 | struct n2_request_context *rctx = ablkcipher_request_ctx(req); |
| 880 | struct crypto_tfm *tfm = req->base.tfm; |
| 881 | unsigned long flags, hv_ret, iv_paddr; |
| 882 | int err = n2_compute_chunks(req); |
| 883 | struct n2_crypto_chunk *c, *tmp; |
| 884 | struct spu_queue *qp; |
| 885 | void *final_iv_addr; |
| 886 | |
| 887 | final_iv_addr = NULL; |
| 888 | |
| 889 | if (err) |
| 890 | return err; |
| 891 | |
| 892 | qp = cpu_to_cwq[get_cpu()]; |
| 893 | err = -ENODEV; |
| 894 | if (!qp) |
| 895 | goto out; |
| 896 | |
| 897 | spin_lock_irqsave(&qp->lock, flags); |
| 898 | |
| 899 | if (encrypt) { |
| 900 | iv_paddr = __pa(rctx->walk.iv); |
| 901 | list_for_each_entry_safe(c, tmp, &rctx->chunk_list, |
| 902 | entry) { |
| 903 | c->iv_paddr = iv_paddr; |
| 904 | err = __n2_crypt_chunk(tfm, c, qp, true); |
| 905 | if (err) |
| 906 | break; |
| 907 | iv_paddr = c->dest_final - rctx->walk.blocksize; |
| 908 | list_del(&c->entry); |
| 909 | if (unlikely(c != &rctx->chunk)) |
| 910 | kfree(c); |
| 911 | } |
| 912 | final_iv_addr = __va(iv_paddr); |
| 913 | } else { |
| 914 | list_for_each_entry_safe_reverse(c, tmp, &rctx->chunk_list, |
| 915 | entry) { |
| 916 | if (c == &rctx->chunk) { |
| 917 | iv_paddr = __pa(rctx->walk.iv); |
| 918 | } else { |
| 919 | iv_paddr = (tmp->arr[tmp->arr_len-1].src_paddr + |
| 920 | tmp->arr[tmp->arr_len-1].src_len - |
| 921 | rctx->walk.blocksize); |
| 922 | } |
| 923 | if (!final_iv_addr) { |
| 924 | unsigned long pa; |
| 925 | |
| 926 | pa = (c->arr[c->arr_len-1].src_paddr + |
| 927 | c->arr[c->arr_len-1].src_len - |
| 928 | rctx->walk.blocksize); |
| 929 | final_iv_addr = rctx->temp_iv; |
| 930 | memcpy(rctx->temp_iv, __va(pa), |
| 931 | rctx->walk.blocksize); |
| 932 | } |
| 933 | c->iv_paddr = iv_paddr; |
| 934 | err = __n2_crypt_chunk(tfm, c, qp, false); |
| 935 | if (err) |
| 936 | break; |
| 937 | list_del(&c->entry); |
| 938 | if (unlikely(c != &rctx->chunk)) |
| 939 | kfree(c); |
| 940 | } |
| 941 | } |
| 942 | if (!err) { |
| 943 | hv_ret = wait_for_tail(qp); |
| 944 | if (hv_ret != HV_EOK) |
| 945 | err = -EINVAL; |
| 946 | } |
| 947 | |
| 948 | spin_unlock_irqrestore(&qp->lock, flags); |
| 949 | |
| 950 | put_cpu(); |
| 951 | |
| 952 | out: |
| 953 | n2_chunk_complete(req, err ? NULL : final_iv_addr); |
| 954 | return err; |
| 955 | } |
| 956 | |
| 957 | static int n2_encrypt_chaining(struct ablkcipher_request *req) |
| 958 | { |
| 959 | return n2_do_chaining(req, true); |
| 960 | } |
| 961 | |
| 962 | static int n2_decrypt_chaining(struct ablkcipher_request *req) |
| 963 | { |
| 964 | return n2_do_chaining(req, false); |
| 965 | } |
| 966 | |
| 967 | struct n2_cipher_tmpl { |
| 968 | const char *name; |
| 969 | const char *drv_name; |
| 970 | u8 block_size; |
| 971 | u8 enc_type; |
| 972 | struct ablkcipher_alg ablkcipher; |
| 973 | }; |
| 974 | |
| 975 | static const struct n2_cipher_tmpl cipher_tmpls[] = { |
| 976 | /* ARC4: only ECB is supported (chaining bits ignored) */ |
| 977 | { .name = "ecb(arc4)", |
| 978 | .drv_name = "ecb-arc4", |
| 979 | .block_size = 1, |
| 980 | .enc_type = (ENC_TYPE_ALG_RC4_STREAM | |
| 981 | ENC_TYPE_CHAINING_ECB), |
| 982 | .ablkcipher = { |
| 983 | .min_keysize = 1, |
| 984 | .max_keysize = 256, |
| 985 | .setkey = n2_arc4_setkey, |
| 986 | .encrypt = n2_encrypt_ecb, |
| 987 | .decrypt = n2_decrypt_ecb, |
| 988 | }, |
| 989 | }, |
| 990 | |
| 991 | /* DES: ECB CBC and CFB are supported */ |
| 992 | { .name = "ecb(des)", |
| 993 | .drv_name = "ecb-des", |
| 994 | .block_size = DES_BLOCK_SIZE, |
| 995 | .enc_type = (ENC_TYPE_ALG_DES | |
| 996 | ENC_TYPE_CHAINING_ECB), |
| 997 | .ablkcipher = { |
| 998 | .min_keysize = DES_KEY_SIZE, |
| 999 | .max_keysize = DES_KEY_SIZE, |
| 1000 | .setkey = n2_des_setkey, |
| 1001 | .encrypt = n2_encrypt_ecb, |
| 1002 | .decrypt = n2_decrypt_ecb, |
| 1003 | }, |
| 1004 | }, |
| 1005 | { .name = "cbc(des)", |
| 1006 | .drv_name = "cbc-des", |
| 1007 | .block_size = DES_BLOCK_SIZE, |
| 1008 | .enc_type = (ENC_TYPE_ALG_DES | |
| 1009 | ENC_TYPE_CHAINING_CBC), |
| 1010 | .ablkcipher = { |
| 1011 | .ivsize = DES_BLOCK_SIZE, |
| 1012 | .min_keysize = DES_KEY_SIZE, |
| 1013 | .max_keysize = DES_KEY_SIZE, |
| 1014 | .setkey = n2_des_setkey, |
| 1015 | .encrypt = n2_encrypt_chaining, |
| 1016 | .decrypt = n2_decrypt_chaining, |
| 1017 | }, |
| 1018 | }, |
| 1019 | { .name = "cfb(des)", |
| 1020 | .drv_name = "cfb-des", |
| 1021 | .block_size = DES_BLOCK_SIZE, |
| 1022 | .enc_type = (ENC_TYPE_ALG_DES | |
| 1023 | ENC_TYPE_CHAINING_CFB), |
| 1024 | .ablkcipher = { |
| 1025 | .min_keysize = DES_KEY_SIZE, |
| 1026 | .max_keysize = DES_KEY_SIZE, |
| 1027 | .setkey = n2_des_setkey, |
| 1028 | .encrypt = n2_encrypt_chaining, |
| 1029 | .decrypt = n2_decrypt_chaining, |
| 1030 | }, |
| 1031 | }, |
| 1032 | |
| 1033 | /* 3DES: ECB CBC and CFB are supported */ |
| 1034 | { .name = "ecb(des3_ede)", |
| 1035 | .drv_name = "ecb-3des", |
| 1036 | .block_size = DES_BLOCK_SIZE, |
| 1037 | .enc_type = (ENC_TYPE_ALG_3DES | |
| 1038 | ENC_TYPE_CHAINING_ECB), |
| 1039 | .ablkcipher = { |
| 1040 | .min_keysize = 3 * DES_KEY_SIZE, |
| 1041 | .max_keysize = 3 * DES_KEY_SIZE, |
| 1042 | .setkey = n2_3des_setkey, |
| 1043 | .encrypt = n2_encrypt_ecb, |
| 1044 | .decrypt = n2_decrypt_ecb, |
| 1045 | }, |
| 1046 | }, |
| 1047 | { .name = "cbc(des3_ede)", |
| 1048 | .drv_name = "cbc-3des", |
| 1049 | .block_size = DES_BLOCK_SIZE, |
| 1050 | .enc_type = (ENC_TYPE_ALG_3DES | |
| 1051 | ENC_TYPE_CHAINING_CBC), |
| 1052 | .ablkcipher = { |
| 1053 | .ivsize = DES_BLOCK_SIZE, |
| 1054 | .min_keysize = 3 * DES_KEY_SIZE, |
| 1055 | .max_keysize = 3 * DES_KEY_SIZE, |
| 1056 | .setkey = n2_3des_setkey, |
| 1057 | .encrypt = n2_encrypt_chaining, |
| 1058 | .decrypt = n2_decrypt_chaining, |
| 1059 | }, |
| 1060 | }, |
| 1061 | { .name = "cfb(des3_ede)", |
| 1062 | .drv_name = "cfb-3des", |
| 1063 | .block_size = DES_BLOCK_SIZE, |
| 1064 | .enc_type = (ENC_TYPE_ALG_3DES | |
| 1065 | ENC_TYPE_CHAINING_CFB), |
| 1066 | .ablkcipher = { |
| 1067 | .min_keysize = 3 * DES_KEY_SIZE, |
| 1068 | .max_keysize = 3 * DES_KEY_SIZE, |
| 1069 | .setkey = n2_3des_setkey, |
| 1070 | .encrypt = n2_encrypt_chaining, |
| 1071 | .decrypt = n2_decrypt_chaining, |
| 1072 | }, |
| 1073 | }, |
| 1074 | /* AES: ECB CBC and CTR are supported */ |
| 1075 | { .name = "ecb(aes)", |
| 1076 | .drv_name = "ecb-aes", |
| 1077 | .block_size = AES_BLOCK_SIZE, |
| 1078 | .enc_type = (ENC_TYPE_ALG_AES128 | |
| 1079 | ENC_TYPE_CHAINING_ECB), |
| 1080 | .ablkcipher = { |
| 1081 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1082 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1083 | .setkey = n2_aes_setkey, |
| 1084 | .encrypt = n2_encrypt_ecb, |
| 1085 | .decrypt = n2_decrypt_ecb, |
| 1086 | }, |
| 1087 | }, |
| 1088 | { .name = "cbc(aes)", |
| 1089 | .drv_name = "cbc-aes", |
| 1090 | .block_size = AES_BLOCK_SIZE, |
| 1091 | .enc_type = (ENC_TYPE_ALG_AES128 | |
| 1092 | ENC_TYPE_CHAINING_CBC), |
| 1093 | .ablkcipher = { |
| 1094 | .ivsize = AES_BLOCK_SIZE, |
| 1095 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1096 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1097 | .setkey = n2_aes_setkey, |
| 1098 | .encrypt = n2_encrypt_chaining, |
| 1099 | .decrypt = n2_decrypt_chaining, |
| 1100 | }, |
| 1101 | }, |
| 1102 | { .name = "ctr(aes)", |
| 1103 | .drv_name = "ctr-aes", |
| 1104 | .block_size = AES_BLOCK_SIZE, |
| 1105 | .enc_type = (ENC_TYPE_ALG_AES128 | |
| 1106 | ENC_TYPE_CHAINING_COUNTER), |
| 1107 | .ablkcipher = { |
| 1108 | .ivsize = AES_BLOCK_SIZE, |
| 1109 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1110 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1111 | .setkey = n2_aes_setkey, |
| 1112 | .encrypt = n2_encrypt_chaining, |
| 1113 | .decrypt = n2_encrypt_chaining, |
| 1114 | }, |
| 1115 | }, |
| 1116 | |
| 1117 | }; |
| 1118 | #define NUM_CIPHER_TMPLS ARRAY_SIZE(cipher_tmpls) |
| 1119 | |
| 1120 | static LIST_HEAD(cipher_algs); |
| 1121 | |
| 1122 | struct n2_hash_tmpl { |
| 1123 | const char *name; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1124 | const char *hash_zero; |
| 1125 | const u32 *hash_init; |
| 1126 | u8 hw_op_hashsz; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1127 | u8 digest_size; |
| 1128 | u8 block_size; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1129 | u8 auth_type; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1130 | }; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1131 | |
| 1132 | static const char md5_zero[MD5_DIGEST_SIZE] = { |
| 1133 | 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04, |
| 1134 | 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e, |
| 1135 | }; |
| 1136 | static const u32 md5_init[MD5_HASH_WORDS] = { |
| 1137 | cpu_to_le32(0x67452301), |
| 1138 | cpu_to_le32(0xefcdab89), |
| 1139 | cpu_to_le32(0x98badcfe), |
| 1140 | cpu_to_le32(0x10325476), |
| 1141 | }; |
| 1142 | static const char sha1_zero[SHA1_DIGEST_SIZE] = { |
| 1143 | 0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, |
| 1144 | 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, |
| 1145 | 0x07, 0x09 |
| 1146 | }; |
| 1147 | static const u32 sha1_init[SHA1_DIGEST_SIZE / 4] = { |
| 1148 | SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4, |
| 1149 | }; |
| 1150 | static const char sha256_zero[SHA256_DIGEST_SIZE] = { |
| 1151 | 0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, |
| 1152 | 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, |
| 1153 | 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99, |
| 1154 | 0x1b, 0x78, 0x52, 0xb8, 0x55 |
| 1155 | }; |
| 1156 | static const u32 sha256_init[SHA256_DIGEST_SIZE / 4] = { |
| 1157 | SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3, |
| 1158 | SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7, |
| 1159 | }; |
| 1160 | static const char sha224_zero[SHA224_DIGEST_SIZE] = { |
| 1161 | 0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47, |
| 1162 | 0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2, |
| 1163 | 0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4, |
| 1164 | 0x2f |
| 1165 | }; |
| 1166 | static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = { |
| 1167 | SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3, |
| 1168 | SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7, |
| 1169 | }; |
| 1170 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1171 | static const struct n2_hash_tmpl hash_tmpls[] = { |
| 1172 | { .name = "md5", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1173 | .hash_zero = md5_zero, |
| 1174 | .hash_init = md5_init, |
| 1175 | .auth_type = AUTH_TYPE_MD5, |
| 1176 | .hw_op_hashsz = MD5_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1177 | .digest_size = MD5_DIGEST_SIZE, |
| 1178 | .block_size = MD5_HMAC_BLOCK_SIZE }, |
| 1179 | { .name = "sha1", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1180 | .hash_zero = sha1_zero, |
| 1181 | .hash_init = sha1_init, |
| 1182 | .auth_type = AUTH_TYPE_SHA1, |
| 1183 | .hw_op_hashsz = SHA1_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1184 | .digest_size = SHA1_DIGEST_SIZE, |
| 1185 | .block_size = SHA1_BLOCK_SIZE }, |
| 1186 | { .name = "sha256", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1187 | .hash_zero = sha256_zero, |
| 1188 | .hash_init = sha256_init, |
| 1189 | .auth_type = AUTH_TYPE_SHA256, |
| 1190 | .hw_op_hashsz = SHA256_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1191 | .digest_size = SHA256_DIGEST_SIZE, |
| 1192 | .block_size = SHA256_BLOCK_SIZE }, |
| 1193 | { .name = "sha224", |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1194 | .hash_zero = sha224_zero, |
| 1195 | .hash_init = sha224_init, |
| 1196 | .auth_type = AUTH_TYPE_SHA256, |
| 1197 | .hw_op_hashsz = SHA256_DIGEST_SIZE, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1198 | .digest_size = SHA224_DIGEST_SIZE, |
| 1199 | .block_size = SHA224_BLOCK_SIZE }, |
| 1200 | }; |
| 1201 | #define NUM_HASH_TMPLS ARRAY_SIZE(hash_tmpls) |
| 1202 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1203 | static LIST_HEAD(ahash_algs); |
| 1204 | |
| 1205 | static int algs_registered; |
| 1206 | |
| 1207 | static void __n2_unregister_algs(void) |
| 1208 | { |
| 1209 | struct n2_cipher_alg *cipher, *cipher_tmp; |
| 1210 | struct n2_ahash_alg *alg, *alg_tmp; |
| 1211 | |
| 1212 | list_for_each_entry_safe(cipher, cipher_tmp, &cipher_algs, entry) { |
| 1213 | crypto_unregister_alg(&cipher->alg); |
| 1214 | list_del(&cipher->entry); |
| 1215 | kfree(cipher); |
| 1216 | } |
| 1217 | list_for_each_entry_safe(alg, alg_tmp, &ahash_algs, entry) { |
| 1218 | crypto_unregister_ahash(&alg->alg); |
| 1219 | list_del(&alg->entry); |
| 1220 | kfree(alg); |
| 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | static int n2_cipher_cra_init(struct crypto_tfm *tfm) |
| 1225 | { |
| 1226 | tfm->crt_ablkcipher.reqsize = sizeof(struct n2_request_context); |
| 1227 | return 0; |
| 1228 | } |
| 1229 | |
| 1230 | static int __devinit __n2_register_one_cipher(const struct n2_cipher_tmpl *tmpl) |
| 1231 | { |
| 1232 | struct n2_cipher_alg *p = kzalloc(sizeof(*p), GFP_KERNEL); |
| 1233 | struct crypto_alg *alg; |
| 1234 | int err; |
| 1235 | |
| 1236 | if (!p) |
| 1237 | return -ENOMEM; |
| 1238 | |
| 1239 | alg = &p->alg; |
| 1240 | |
| 1241 | snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name); |
| 1242 | snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s-n2", tmpl->drv_name); |
| 1243 | alg->cra_priority = N2_CRA_PRIORITY; |
| 1244 | alg->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
| 1245 | alg->cra_blocksize = tmpl->block_size; |
| 1246 | p->enc_type = tmpl->enc_type; |
| 1247 | alg->cra_ctxsize = sizeof(struct n2_cipher_context); |
| 1248 | alg->cra_type = &crypto_ablkcipher_type; |
| 1249 | alg->cra_u.ablkcipher = tmpl->ablkcipher; |
| 1250 | alg->cra_init = n2_cipher_cra_init; |
| 1251 | alg->cra_module = THIS_MODULE; |
| 1252 | |
| 1253 | list_add(&p->entry, &cipher_algs); |
| 1254 | err = crypto_register_alg(alg); |
| 1255 | if (err) { |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1256 | pr_err("%s alg registration failed\n", alg->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1257 | list_del(&p->entry); |
| 1258 | kfree(p); |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1259 | } else { |
| 1260 | pr_info("%s alg registered\n", alg->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1261 | } |
| 1262 | return err; |
| 1263 | } |
| 1264 | |
| 1265 | static int __devinit __n2_register_one_ahash(const struct n2_hash_tmpl *tmpl) |
| 1266 | { |
| 1267 | struct n2_ahash_alg *p = kzalloc(sizeof(*p), GFP_KERNEL); |
| 1268 | struct hash_alg_common *halg; |
| 1269 | struct crypto_alg *base; |
| 1270 | struct ahash_alg *ahash; |
| 1271 | int err; |
| 1272 | |
| 1273 | if (!p) |
| 1274 | return -ENOMEM; |
| 1275 | |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1276 | p->hash_zero = tmpl->hash_zero; |
| 1277 | p->hash_init = tmpl->hash_init; |
| 1278 | p->auth_type = tmpl->auth_type; |
| 1279 | p->hw_op_hashsz = tmpl->hw_op_hashsz; |
| 1280 | p->digest_size = tmpl->digest_size; |
| 1281 | |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1282 | ahash = &p->alg; |
| 1283 | ahash->init = n2_hash_async_init; |
| 1284 | ahash->update = n2_hash_async_update; |
| 1285 | ahash->final = n2_hash_async_final; |
| 1286 | ahash->finup = n2_hash_async_finup; |
David S. Miller | 3a2c034 | 2010-05-22 02:45:56 -0700 | [diff] [blame^] | 1287 | ahash->digest = n2_hash_async_digest; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1288 | |
| 1289 | halg = &ahash->halg; |
| 1290 | halg->digestsize = tmpl->digest_size; |
| 1291 | |
| 1292 | base = &halg->base; |
| 1293 | snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name); |
| 1294 | snprintf(base->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s-n2", tmpl->name); |
| 1295 | base->cra_priority = N2_CRA_PRIORITY; |
| 1296 | base->cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_NEED_FALLBACK; |
| 1297 | base->cra_blocksize = tmpl->block_size; |
| 1298 | base->cra_ctxsize = sizeof(struct n2_hash_ctx); |
| 1299 | base->cra_module = THIS_MODULE; |
| 1300 | base->cra_init = n2_hash_cra_init; |
| 1301 | base->cra_exit = n2_hash_cra_exit; |
| 1302 | |
| 1303 | list_add(&p->entry, &ahash_algs); |
| 1304 | err = crypto_register_ahash(ahash); |
| 1305 | if (err) { |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1306 | pr_err("%s alg registration failed\n", base->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1307 | list_del(&p->entry); |
| 1308 | kfree(p); |
David S. Miller | 3851110 | 2010-05-19 23:16:05 -0700 | [diff] [blame] | 1309 | } else { |
| 1310 | pr_info("%s alg registered\n", base->cra_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1311 | } |
| 1312 | return err; |
| 1313 | } |
| 1314 | |
| 1315 | static int __devinit n2_register_algs(void) |
| 1316 | { |
| 1317 | int i, err = 0; |
| 1318 | |
| 1319 | mutex_lock(&spu_lock); |
| 1320 | if (algs_registered++) |
| 1321 | goto out; |
| 1322 | |
| 1323 | for (i = 0; i < NUM_HASH_TMPLS; i++) { |
| 1324 | err = __n2_register_one_ahash(&hash_tmpls[i]); |
| 1325 | if (err) { |
| 1326 | __n2_unregister_algs(); |
| 1327 | goto out; |
| 1328 | } |
| 1329 | } |
| 1330 | for (i = 0; i < NUM_CIPHER_TMPLS; i++) { |
| 1331 | err = __n2_register_one_cipher(&cipher_tmpls[i]); |
| 1332 | if (err) { |
| 1333 | __n2_unregister_algs(); |
| 1334 | goto out; |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | out: |
| 1339 | mutex_unlock(&spu_lock); |
| 1340 | return err; |
| 1341 | } |
| 1342 | |
| 1343 | static void __exit n2_unregister_algs(void) |
| 1344 | { |
| 1345 | mutex_lock(&spu_lock); |
| 1346 | if (!--algs_registered) |
| 1347 | __n2_unregister_algs(); |
| 1348 | mutex_unlock(&spu_lock); |
| 1349 | } |
| 1350 | |
| 1351 | /* To map CWQ queues to interrupt sources, the hypervisor API provides |
| 1352 | * a devino. This isn't very useful to us because all of the |
| 1353 | * interrupts listed in the of_device node have been translated to |
| 1354 | * Linux virtual IRQ cookie numbers. |
| 1355 | * |
| 1356 | * So we have to back-translate, going through the 'intr' and 'ino' |
| 1357 | * property tables of the n2cp MDESC node, matching it with the OF |
| 1358 | * 'interrupts' property entries, in order to to figure out which |
| 1359 | * devino goes to which already-translated IRQ. |
| 1360 | */ |
| 1361 | static int find_devino_index(struct of_device *dev, struct spu_mdesc_info *ip, |
| 1362 | unsigned long dev_ino) |
| 1363 | { |
| 1364 | const unsigned int *dev_intrs; |
| 1365 | unsigned int intr; |
| 1366 | int i; |
| 1367 | |
| 1368 | for (i = 0; i < ip->num_intrs; i++) { |
| 1369 | if (ip->ino_table[i].ino == dev_ino) |
| 1370 | break; |
| 1371 | } |
| 1372 | if (i == ip->num_intrs) |
| 1373 | return -ENODEV; |
| 1374 | |
| 1375 | intr = ip->ino_table[i].intr; |
| 1376 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1377 | dev_intrs = of_get_property(dev->dev.of_node, "interrupts", NULL); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1378 | if (!dev_intrs) |
| 1379 | return -ENODEV; |
| 1380 | |
| 1381 | for (i = 0; i < dev->num_irqs; i++) { |
| 1382 | if (dev_intrs[i] == intr) |
| 1383 | return i; |
| 1384 | } |
| 1385 | |
| 1386 | return -ENODEV; |
| 1387 | } |
| 1388 | |
| 1389 | static int spu_map_ino(struct of_device *dev, struct spu_mdesc_info *ip, |
| 1390 | const char *irq_name, struct spu_queue *p, |
| 1391 | irq_handler_t handler) |
| 1392 | { |
| 1393 | unsigned long herr; |
| 1394 | int index; |
| 1395 | |
| 1396 | herr = sun4v_ncs_qhandle_to_devino(p->qhandle, &p->devino); |
| 1397 | if (herr) |
| 1398 | return -EINVAL; |
| 1399 | |
| 1400 | index = find_devino_index(dev, ip, p->devino); |
| 1401 | if (index < 0) |
| 1402 | return index; |
| 1403 | |
| 1404 | p->irq = dev->irqs[index]; |
| 1405 | |
| 1406 | sprintf(p->irq_name, "%s-%d", irq_name, index); |
| 1407 | |
| 1408 | return request_irq(p->irq, handler, IRQF_SAMPLE_RANDOM, |
| 1409 | p->irq_name, p); |
| 1410 | } |
| 1411 | |
| 1412 | static struct kmem_cache *queue_cache[2]; |
| 1413 | |
| 1414 | static void *new_queue(unsigned long q_type) |
| 1415 | { |
| 1416 | return kmem_cache_zalloc(queue_cache[q_type - 1], GFP_KERNEL); |
| 1417 | } |
| 1418 | |
| 1419 | static void free_queue(void *p, unsigned long q_type) |
| 1420 | { |
| 1421 | return kmem_cache_free(queue_cache[q_type - 1], p); |
| 1422 | } |
| 1423 | |
| 1424 | static int queue_cache_init(void) |
| 1425 | { |
| 1426 | if (!queue_cache[HV_NCS_QTYPE_MAU - 1]) |
| 1427 | queue_cache[HV_NCS_QTYPE_MAU - 1] = |
David S. Miller | 527b952 | 2010-05-22 00:50:12 -0700 | [diff] [blame] | 1428 | kmem_cache_create("mau_queue", |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1429 | (MAU_NUM_ENTRIES * |
| 1430 | MAU_ENTRY_SIZE), |
| 1431 | MAU_ENTRY_SIZE, 0, NULL); |
| 1432 | if (!queue_cache[HV_NCS_QTYPE_MAU - 1]) |
| 1433 | return -ENOMEM; |
| 1434 | |
| 1435 | if (!queue_cache[HV_NCS_QTYPE_CWQ - 1]) |
| 1436 | queue_cache[HV_NCS_QTYPE_CWQ - 1] = |
| 1437 | kmem_cache_create("cwq_queue", |
| 1438 | (CWQ_NUM_ENTRIES * |
| 1439 | CWQ_ENTRY_SIZE), |
| 1440 | CWQ_ENTRY_SIZE, 0, NULL); |
| 1441 | if (!queue_cache[HV_NCS_QTYPE_CWQ - 1]) { |
| 1442 | kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_MAU - 1]); |
| 1443 | return -ENOMEM; |
| 1444 | } |
| 1445 | return 0; |
| 1446 | } |
| 1447 | |
| 1448 | static void queue_cache_destroy(void) |
| 1449 | { |
| 1450 | kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_MAU - 1]); |
| 1451 | kmem_cache_destroy(queue_cache[HV_NCS_QTYPE_CWQ - 1]); |
| 1452 | } |
| 1453 | |
| 1454 | static int spu_queue_register(struct spu_queue *p, unsigned long q_type) |
| 1455 | { |
| 1456 | cpumask_var_t old_allowed; |
| 1457 | unsigned long hv_ret; |
| 1458 | |
| 1459 | if (cpumask_empty(&p->sharing)) |
| 1460 | return -EINVAL; |
| 1461 | |
| 1462 | if (!alloc_cpumask_var(&old_allowed, GFP_KERNEL)) |
| 1463 | return -ENOMEM; |
| 1464 | |
| 1465 | cpumask_copy(old_allowed, ¤t->cpus_allowed); |
| 1466 | |
| 1467 | set_cpus_allowed_ptr(current, &p->sharing); |
| 1468 | |
| 1469 | hv_ret = sun4v_ncs_qconf(q_type, __pa(p->q), |
| 1470 | CWQ_NUM_ENTRIES, &p->qhandle); |
| 1471 | if (!hv_ret) |
| 1472 | sun4v_ncs_sethead_marker(p->qhandle, 0); |
| 1473 | |
| 1474 | set_cpus_allowed_ptr(current, old_allowed); |
| 1475 | |
| 1476 | free_cpumask_var(old_allowed); |
| 1477 | |
| 1478 | return (hv_ret ? -EINVAL : 0); |
| 1479 | } |
| 1480 | |
| 1481 | static int spu_queue_setup(struct spu_queue *p) |
| 1482 | { |
| 1483 | int err; |
| 1484 | |
| 1485 | p->q = new_queue(p->q_type); |
| 1486 | if (!p->q) |
| 1487 | return -ENOMEM; |
| 1488 | |
| 1489 | err = spu_queue_register(p, p->q_type); |
| 1490 | if (err) { |
| 1491 | free_queue(p->q, p->q_type); |
| 1492 | p->q = NULL; |
| 1493 | } |
| 1494 | |
| 1495 | return err; |
| 1496 | } |
| 1497 | |
| 1498 | static void spu_queue_destroy(struct spu_queue *p) |
| 1499 | { |
| 1500 | unsigned long hv_ret; |
| 1501 | |
| 1502 | if (!p->q) |
| 1503 | return; |
| 1504 | |
| 1505 | hv_ret = sun4v_ncs_qconf(p->q_type, p->qhandle, 0, &p->qhandle); |
| 1506 | |
| 1507 | if (!hv_ret) |
| 1508 | free_queue(p->q, p->q_type); |
| 1509 | } |
| 1510 | |
| 1511 | static void spu_list_destroy(struct list_head *list) |
| 1512 | { |
| 1513 | struct spu_queue *p, *n; |
| 1514 | |
| 1515 | list_for_each_entry_safe(p, n, list, list) { |
| 1516 | int i; |
| 1517 | |
| 1518 | for (i = 0; i < NR_CPUS; i++) { |
| 1519 | if (cpu_to_cwq[i] == p) |
| 1520 | cpu_to_cwq[i] = NULL; |
| 1521 | } |
| 1522 | |
| 1523 | if (p->irq) { |
| 1524 | free_irq(p->irq, p); |
| 1525 | p->irq = 0; |
| 1526 | } |
| 1527 | spu_queue_destroy(p); |
| 1528 | list_del(&p->list); |
| 1529 | kfree(p); |
| 1530 | } |
| 1531 | } |
| 1532 | |
| 1533 | /* Walk the backward arcs of a CWQ 'exec-unit' node, |
| 1534 | * gathering cpu membership information. |
| 1535 | */ |
| 1536 | static int spu_mdesc_walk_arcs(struct mdesc_handle *mdesc, |
| 1537 | struct of_device *dev, |
| 1538 | u64 node, struct spu_queue *p, |
| 1539 | struct spu_queue **table) |
| 1540 | { |
| 1541 | u64 arc; |
| 1542 | |
| 1543 | mdesc_for_each_arc(arc, mdesc, node, MDESC_ARC_TYPE_BACK) { |
| 1544 | u64 tgt = mdesc_arc_target(mdesc, arc); |
| 1545 | const char *name = mdesc_node_name(mdesc, tgt); |
| 1546 | const u64 *id; |
| 1547 | |
| 1548 | if (strcmp(name, "cpu")) |
| 1549 | continue; |
| 1550 | id = mdesc_get_property(mdesc, tgt, "id", NULL); |
| 1551 | if (table[*id] != NULL) { |
| 1552 | dev_err(&dev->dev, "%s: SPU cpu slot already set.\n", |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1553 | dev->dev.of_node->full_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1554 | return -EINVAL; |
| 1555 | } |
| 1556 | cpu_set(*id, p->sharing); |
| 1557 | table[*id] = p; |
| 1558 | } |
| 1559 | return 0; |
| 1560 | } |
| 1561 | |
| 1562 | /* Process an 'exec-unit' MDESC node of type 'cwq'. */ |
| 1563 | static int handle_exec_unit(struct spu_mdesc_info *ip, struct list_head *list, |
| 1564 | struct of_device *dev, struct mdesc_handle *mdesc, |
| 1565 | u64 node, const char *iname, unsigned long q_type, |
| 1566 | irq_handler_t handler, struct spu_queue **table) |
| 1567 | { |
| 1568 | struct spu_queue *p; |
| 1569 | int err; |
| 1570 | |
| 1571 | p = kzalloc(sizeof(struct spu_queue), GFP_KERNEL); |
| 1572 | if (!p) { |
| 1573 | dev_err(&dev->dev, "%s: Could not allocate SPU queue.\n", |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1574 | dev->dev.of_node->full_name); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1575 | return -ENOMEM; |
| 1576 | } |
| 1577 | |
| 1578 | cpus_clear(p->sharing); |
| 1579 | spin_lock_init(&p->lock); |
| 1580 | p->q_type = q_type; |
| 1581 | INIT_LIST_HEAD(&p->jobs); |
| 1582 | list_add(&p->list, list); |
| 1583 | |
| 1584 | err = spu_mdesc_walk_arcs(mdesc, dev, node, p, table); |
| 1585 | if (err) |
| 1586 | return err; |
| 1587 | |
| 1588 | err = spu_queue_setup(p); |
| 1589 | if (err) |
| 1590 | return err; |
| 1591 | |
| 1592 | return spu_map_ino(dev, ip, iname, p, handler); |
| 1593 | } |
| 1594 | |
| 1595 | static int spu_mdesc_scan(struct mdesc_handle *mdesc, struct of_device *dev, |
| 1596 | struct spu_mdesc_info *ip, struct list_head *list, |
| 1597 | const char *exec_name, unsigned long q_type, |
| 1598 | irq_handler_t handler, struct spu_queue **table) |
| 1599 | { |
| 1600 | int err = 0; |
| 1601 | u64 node; |
| 1602 | |
| 1603 | mdesc_for_each_node_by_name(mdesc, node, "exec-unit") { |
| 1604 | const char *type; |
| 1605 | |
| 1606 | type = mdesc_get_property(mdesc, node, "type", NULL); |
| 1607 | if (!type || strcmp(type, exec_name)) |
| 1608 | continue; |
| 1609 | |
| 1610 | err = handle_exec_unit(ip, list, dev, mdesc, node, |
| 1611 | exec_name, q_type, handler, table); |
| 1612 | if (err) { |
| 1613 | spu_list_destroy(list); |
| 1614 | break; |
| 1615 | } |
| 1616 | } |
| 1617 | |
| 1618 | return err; |
| 1619 | } |
| 1620 | |
| 1621 | static int __devinit get_irq_props(struct mdesc_handle *mdesc, u64 node, |
| 1622 | struct spu_mdesc_info *ip) |
| 1623 | { |
| 1624 | const u64 *intr, *ino; |
| 1625 | int intr_len, ino_len; |
| 1626 | int i; |
| 1627 | |
| 1628 | intr = mdesc_get_property(mdesc, node, "intr", &intr_len); |
| 1629 | if (!intr) |
| 1630 | return -ENODEV; |
| 1631 | |
| 1632 | ino = mdesc_get_property(mdesc, node, "ino", &ino_len); |
| 1633 | if (!intr) |
| 1634 | return -ENODEV; |
| 1635 | |
| 1636 | if (intr_len != ino_len) |
| 1637 | return -EINVAL; |
| 1638 | |
| 1639 | ip->num_intrs = intr_len / sizeof(u64); |
| 1640 | ip->ino_table = kzalloc((sizeof(struct ino_blob) * |
| 1641 | ip->num_intrs), |
| 1642 | GFP_KERNEL); |
| 1643 | if (!ip->ino_table) |
| 1644 | return -ENOMEM; |
| 1645 | |
| 1646 | for (i = 0; i < ip->num_intrs; i++) { |
| 1647 | struct ino_blob *b = &ip->ino_table[i]; |
| 1648 | b->intr = intr[i]; |
| 1649 | b->ino = ino[i]; |
| 1650 | } |
| 1651 | |
| 1652 | return 0; |
| 1653 | } |
| 1654 | |
| 1655 | static int __devinit grab_mdesc_irq_props(struct mdesc_handle *mdesc, |
| 1656 | struct of_device *dev, |
| 1657 | struct spu_mdesc_info *ip, |
| 1658 | const char *node_name) |
| 1659 | { |
| 1660 | const unsigned int *reg; |
| 1661 | u64 node; |
| 1662 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1663 | reg = of_get_property(dev->dev.of_node, "reg", NULL); |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1664 | if (!reg) |
| 1665 | return -ENODEV; |
| 1666 | |
| 1667 | mdesc_for_each_node_by_name(mdesc, node, "virtual-device") { |
| 1668 | const char *name; |
| 1669 | const u64 *chdl; |
| 1670 | |
| 1671 | name = mdesc_get_property(mdesc, node, "name", NULL); |
| 1672 | if (!name || strcmp(name, node_name)) |
| 1673 | continue; |
| 1674 | chdl = mdesc_get_property(mdesc, node, "cfg-handle", NULL); |
| 1675 | if (!chdl || (*chdl != *reg)) |
| 1676 | continue; |
| 1677 | ip->cfg_handle = *chdl; |
| 1678 | return get_irq_props(mdesc, node, ip); |
| 1679 | } |
| 1680 | |
| 1681 | return -ENODEV; |
| 1682 | } |
| 1683 | |
| 1684 | static unsigned long n2_spu_hvapi_major; |
| 1685 | static unsigned long n2_spu_hvapi_minor; |
| 1686 | |
| 1687 | static int __devinit n2_spu_hvapi_register(void) |
| 1688 | { |
| 1689 | int err; |
| 1690 | |
| 1691 | n2_spu_hvapi_major = 2; |
| 1692 | n2_spu_hvapi_minor = 0; |
| 1693 | |
| 1694 | err = sun4v_hvapi_register(HV_GRP_NCS, |
| 1695 | n2_spu_hvapi_major, |
| 1696 | &n2_spu_hvapi_minor); |
| 1697 | |
| 1698 | if (!err) |
| 1699 | pr_info("Registered NCS HVAPI version %lu.%lu\n", |
| 1700 | n2_spu_hvapi_major, |
| 1701 | n2_spu_hvapi_minor); |
| 1702 | |
| 1703 | return err; |
| 1704 | } |
| 1705 | |
| 1706 | static void n2_spu_hvapi_unregister(void) |
| 1707 | { |
| 1708 | sun4v_hvapi_unregister(HV_GRP_NCS); |
| 1709 | } |
| 1710 | |
| 1711 | static int global_ref; |
| 1712 | |
| 1713 | static int __devinit grab_global_resources(void) |
| 1714 | { |
| 1715 | int err = 0; |
| 1716 | |
| 1717 | mutex_lock(&spu_lock); |
| 1718 | |
| 1719 | if (global_ref++) |
| 1720 | goto out; |
| 1721 | |
| 1722 | err = n2_spu_hvapi_register(); |
| 1723 | if (err) |
| 1724 | goto out; |
| 1725 | |
| 1726 | err = queue_cache_init(); |
| 1727 | if (err) |
| 1728 | goto out_hvapi_release; |
| 1729 | |
| 1730 | err = -ENOMEM; |
| 1731 | cpu_to_cwq = kzalloc(sizeof(struct spu_queue *) * NR_CPUS, |
| 1732 | GFP_KERNEL); |
| 1733 | if (!cpu_to_cwq) |
| 1734 | goto out_queue_cache_destroy; |
| 1735 | |
| 1736 | cpu_to_mau = kzalloc(sizeof(struct spu_queue *) * NR_CPUS, |
| 1737 | GFP_KERNEL); |
| 1738 | if (!cpu_to_mau) |
| 1739 | goto out_free_cwq_table; |
| 1740 | |
| 1741 | err = 0; |
| 1742 | |
| 1743 | out: |
| 1744 | if (err) |
| 1745 | global_ref--; |
| 1746 | mutex_unlock(&spu_lock); |
| 1747 | return err; |
| 1748 | |
| 1749 | out_free_cwq_table: |
| 1750 | kfree(cpu_to_cwq); |
| 1751 | cpu_to_cwq = NULL; |
| 1752 | |
| 1753 | out_queue_cache_destroy: |
| 1754 | queue_cache_destroy(); |
| 1755 | |
| 1756 | out_hvapi_release: |
| 1757 | n2_spu_hvapi_unregister(); |
| 1758 | goto out; |
| 1759 | } |
| 1760 | |
| 1761 | static void release_global_resources(void) |
| 1762 | { |
| 1763 | mutex_lock(&spu_lock); |
| 1764 | if (!--global_ref) { |
| 1765 | kfree(cpu_to_cwq); |
| 1766 | cpu_to_cwq = NULL; |
| 1767 | |
| 1768 | kfree(cpu_to_mau); |
| 1769 | cpu_to_mau = NULL; |
| 1770 | |
| 1771 | queue_cache_destroy(); |
| 1772 | n2_spu_hvapi_unregister(); |
| 1773 | } |
| 1774 | mutex_unlock(&spu_lock); |
| 1775 | } |
| 1776 | |
| 1777 | static struct n2_crypto * __devinit alloc_n2cp(void) |
| 1778 | { |
| 1779 | struct n2_crypto *np = kzalloc(sizeof(struct n2_crypto), GFP_KERNEL); |
| 1780 | |
| 1781 | if (np) |
| 1782 | INIT_LIST_HEAD(&np->cwq_list); |
| 1783 | |
| 1784 | return np; |
| 1785 | } |
| 1786 | |
| 1787 | static void free_n2cp(struct n2_crypto *np) |
| 1788 | { |
| 1789 | if (np->cwq_info.ino_table) { |
| 1790 | kfree(np->cwq_info.ino_table); |
| 1791 | np->cwq_info.ino_table = NULL; |
| 1792 | } |
| 1793 | |
| 1794 | kfree(np); |
| 1795 | } |
| 1796 | |
| 1797 | static void __devinit n2_spu_driver_version(void) |
| 1798 | { |
| 1799 | static int n2_spu_version_printed; |
| 1800 | |
| 1801 | if (n2_spu_version_printed++ == 0) |
| 1802 | pr_info("%s", version); |
| 1803 | } |
| 1804 | |
| 1805 | static int __devinit n2_crypto_probe(struct of_device *dev, |
| 1806 | const struct of_device_id *match) |
| 1807 | { |
| 1808 | struct mdesc_handle *mdesc; |
| 1809 | const char *full_name; |
| 1810 | struct n2_crypto *np; |
| 1811 | int err; |
| 1812 | |
| 1813 | n2_spu_driver_version(); |
| 1814 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1815 | full_name = dev->dev.of_node->full_name; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1816 | pr_info("Found N2CP at %s\n", full_name); |
| 1817 | |
| 1818 | np = alloc_n2cp(); |
| 1819 | if (!np) { |
| 1820 | dev_err(&dev->dev, "%s: Unable to allocate n2cp.\n", |
| 1821 | full_name); |
| 1822 | return -ENOMEM; |
| 1823 | } |
| 1824 | |
| 1825 | err = grab_global_resources(); |
| 1826 | if (err) { |
| 1827 | dev_err(&dev->dev, "%s: Unable to grab " |
| 1828 | "global resources.\n", full_name); |
| 1829 | goto out_free_n2cp; |
| 1830 | } |
| 1831 | |
| 1832 | mdesc = mdesc_grab(); |
| 1833 | |
| 1834 | if (!mdesc) { |
| 1835 | dev_err(&dev->dev, "%s: Unable to grab MDESC.\n", |
| 1836 | full_name); |
| 1837 | err = -ENODEV; |
| 1838 | goto out_free_global; |
| 1839 | } |
| 1840 | err = grab_mdesc_irq_props(mdesc, dev, &np->cwq_info, "n2cp"); |
| 1841 | if (err) { |
| 1842 | dev_err(&dev->dev, "%s: Unable to grab IRQ props.\n", |
| 1843 | full_name); |
| 1844 | mdesc_release(mdesc); |
| 1845 | goto out_free_global; |
| 1846 | } |
| 1847 | |
| 1848 | err = spu_mdesc_scan(mdesc, dev, &np->cwq_info, &np->cwq_list, |
| 1849 | "cwq", HV_NCS_QTYPE_CWQ, cwq_intr, |
| 1850 | cpu_to_cwq); |
| 1851 | mdesc_release(mdesc); |
| 1852 | |
| 1853 | if (err) { |
| 1854 | dev_err(&dev->dev, "%s: CWQ MDESC scan failed.\n", |
| 1855 | full_name); |
| 1856 | goto out_free_global; |
| 1857 | } |
| 1858 | |
| 1859 | err = n2_register_algs(); |
| 1860 | if (err) { |
| 1861 | dev_err(&dev->dev, "%s: Unable to register algorithms.\n", |
| 1862 | full_name); |
| 1863 | goto out_free_spu_list; |
| 1864 | } |
| 1865 | |
| 1866 | dev_set_drvdata(&dev->dev, np); |
| 1867 | |
| 1868 | return 0; |
| 1869 | |
| 1870 | out_free_spu_list: |
| 1871 | spu_list_destroy(&np->cwq_list); |
| 1872 | |
| 1873 | out_free_global: |
| 1874 | release_global_resources(); |
| 1875 | |
| 1876 | out_free_n2cp: |
| 1877 | free_n2cp(np); |
| 1878 | |
| 1879 | return err; |
| 1880 | } |
| 1881 | |
| 1882 | static int __devexit n2_crypto_remove(struct of_device *dev) |
| 1883 | { |
| 1884 | struct n2_crypto *np = dev_get_drvdata(&dev->dev); |
| 1885 | |
| 1886 | n2_unregister_algs(); |
| 1887 | |
| 1888 | spu_list_destroy(&np->cwq_list); |
| 1889 | |
| 1890 | release_global_resources(); |
| 1891 | |
| 1892 | free_n2cp(np); |
| 1893 | |
| 1894 | return 0; |
| 1895 | } |
| 1896 | |
| 1897 | static struct n2_mau * __devinit alloc_ncp(void) |
| 1898 | { |
| 1899 | struct n2_mau *mp = kzalloc(sizeof(struct n2_mau), GFP_KERNEL); |
| 1900 | |
| 1901 | if (mp) |
| 1902 | INIT_LIST_HEAD(&mp->mau_list); |
| 1903 | |
| 1904 | return mp; |
| 1905 | } |
| 1906 | |
| 1907 | static void free_ncp(struct n2_mau *mp) |
| 1908 | { |
| 1909 | if (mp->mau_info.ino_table) { |
| 1910 | kfree(mp->mau_info.ino_table); |
| 1911 | mp->mau_info.ino_table = NULL; |
| 1912 | } |
| 1913 | |
| 1914 | kfree(mp); |
| 1915 | } |
| 1916 | |
| 1917 | static int __devinit n2_mau_probe(struct of_device *dev, |
| 1918 | const struct of_device_id *match) |
| 1919 | { |
| 1920 | struct mdesc_handle *mdesc; |
| 1921 | const char *full_name; |
| 1922 | struct n2_mau *mp; |
| 1923 | int err; |
| 1924 | |
| 1925 | n2_spu_driver_version(); |
| 1926 | |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 1927 | full_name = dev->dev.of_node->full_name; |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 1928 | pr_info("Found NCP at %s\n", full_name); |
| 1929 | |
| 1930 | mp = alloc_ncp(); |
| 1931 | if (!mp) { |
| 1932 | dev_err(&dev->dev, "%s: Unable to allocate ncp.\n", |
| 1933 | full_name); |
| 1934 | return -ENOMEM; |
| 1935 | } |
| 1936 | |
| 1937 | err = grab_global_resources(); |
| 1938 | if (err) { |
| 1939 | dev_err(&dev->dev, "%s: Unable to grab " |
| 1940 | "global resources.\n", full_name); |
| 1941 | goto out_free_ncp; |
| 1942 | } |
| 1943 | |
| 1944 | mdesc = mdesc_grab(); |
| 1945 | |
| 1946 | if (!mdesc) { |
| 1947 | dev_err(&dev->dev, "%s: Unable to grab MDESC.\n", |
| 1948 | full_name); |
| 1949 | err = -ENODEV; |
| 1950 | goto out_free_global; |
| 1951 | } |
| 1952 | |
| 1953 | err = grab_mdesc_irq_props(mdesc, dev, &mp->mau_info, "ncp"); |
| 1954 | if (err) { |
| 1955 | dev_err(&dev->dev, "%s: Unable to grab IRQ props.\n", |
| 1956 | full_name); |
| 1957 | mdesc_release(mdesc); |
| 1958 | goto out_free_global; |
| 1959 | } |
| 1960 | |
| 1961 | err = spu_mdesc_scan(mdesc, dev, &mp->mau_info, &mp->mau_list, |
| 1962 | "mau", HV_NCS_QTYPE_MAU, mau_intr, |
| 1963 | cpu_to_mau); |
| 1964 | mdesc_release(mdesc); |
| 1965 | |
| 1966 | if (err) { |
| 1967 | dev_err(&dev->dev, "%s: MAU MDESC scan failed.\n", |
| 1968 | full_name); |
| 1969 | goto out_free_global; |
| 1970 | } |
| 1971 | |
| 1972 | dev_set_drvdata(&dev->dev, mp); |
| 1973 | |
| 1974 | return 0; |
| 1975 | |
| 1976 | out_free_global: |
| 1977 | release_global_resources(); |
| 1978 | |
| 1979 | out_free_ncp: |
| 1980 | free_ncp(mp); |
| 1981 | |
| 1982 | return err; |
| 1983 | } |
| 1984 | |
| 1985 | static int __devexit n2_mau_remove(struct of_device *dev) |
| 1986 | { |
| 1987 | struct n2_mau *mp = dev_get_drvdata(&dev->dev); |
| 1988 | |
| 1989 | spu_list_destroy(&mp->mau_list); |
| 1990 | |
| 1991 | release_global_resources(); |
| 1992 | |
| 1993 | free_ncp(mp); |
| 1994 | |
| 1995 | return 0; |
| 1996 | } |
| 1997 | |
| 1998 | static struct of_device_id n2_crypto_match[] = { |
| 1999 | { |
| 2000 | .name = "n2cp", |
| 2001 | .compatible = "SUNW,n2-cwq", |
| 2002 | }, |
| 2003 | { |
| 2004 | .name = "n2cp", |
| 2005 | .compatible = "SUNW,vf-cwq", |
| 2006 | }, |
| 2007 | {}, |
| 2008 | }; |
| 2009 | |
| 2010 | MODULE_DEVICE_TABLE(of, n2_crypto_match); |
| 2011 | |
| 2012 | static struct of_platform_driver n2_crypto_driver = { |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2013 | .driver = { |
| 2014 | .name = "n2cp", |
| 2015 | .owner = THIS_MODULE, |
| 2016 | .of_match_table = n2_crypto_match, |
| 2017 | }, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2018 | .probe = n2_crypto_probe, |
| 2019 | .remove = __devexit_p(n2_crypto_remove), |
| 2020 | }; |
| 2021 | |
| 2022 | static struct of_device_id n2_mau_match[] = { |
| 2023 | { |
| 2024 | .name = "ncp", |
| 2025 | .compatible = "SUNW,n2-mau", |
| 2026 | }, |
| 2027 | { |
| 2028 | .name = "ncp", |
| 2029 | .compatible = "SUNW,vf-mau", |
| 2030 | }, |
| 2031 | {}, |
| 2032 | }; |
| 2033 | |
| 2034 | MODULE_DEVICE_TABLE(of, n2_mau_match); |
| 2035 | |
| 2036 | static struct of_platform_driver n2_mau_driver = { |
David S. Miller | ff6c734 | 2010-05-25 17:37:08 -0700 | [diff] [blame] | 2037 | .driver = { |
| 2038 | .name = "ncp", |
| 2039 | .owner = THIS_MODULE, |
| 2040 | .of_match_table = n2_mau_match, |
| 2041 | }, |
David S. Miller | 0a625fd | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2042 | .probe = n2_mau_probe, |
| 2043 | .remove = __devexit_p(n2_mau_remove), |
| 2044 | }; |
| 2045 | |
| 2046 | static int __init n2_init(void) |
| 2047 | { |
| 2048 | int err = of_register_driver(&n2_crypto_driver, &of_bus_type); |
| 2049 | |
| 2050 | if (!err) { |
| 2051 | err = of_register_driver(&n2_mau_driver, &of_bus_type); |
| 2052 | if (err) |
| 2053 | of_unregister_driver(&n2_crypto_driver); |
| 2054 | } |
| 2055 | return err; |
| 2056 | } |
| 2057 | |
| 2058 | static void __exit n2_exit(void) |
| 2059 | { |
| 2060 | of_unregister_driver(&n2_mau_driver); |
| 2061 | of_unregister_driver(&n2_crypto_driver); |
| 2062 | } |
| 2063 | |
| 2064 | module_init(n2_init); |
| 2065 | module_exit(n2_exit); |