Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Cryptographic API. |
| 3 | * |
| 4 | * Support for OMAP SHA1/MD5 HW acceleration. |
| 5 | * |
| 6 | * Copyright (c) 2010 Nokia Corporation |
| 7 | * Author: Dmitry Kasatkin <dmitry.kasatkin@nokia.com> |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 8 | * Copyright (c) 2011 Texas Instruments Incorporated |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as published |
| 12 | * by the Free Software Foundation. |
| 13 | * |
| 14 | * Some ideas are from old omap-sha1-md5.c driver. |
| 15 | */ |
| 16 | |
| 17 | #define pr_fmt(fmt) "%s: " fmt, __func__ |
| 18 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 19 | #include <linux/err.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/kernel.h> |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 26 | #include <linux/irq.h> |
| 27 | #include <linux/io.h> |
| 28 | #include <linux/platform_device.h> |
| 29 | #include <linux/scatterlist.h> |
| 30 | #include <linux/dma-mapping.h> |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 31 | #include <linux/dmaengine.h> |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 32 | #include <linux/pm_runtime.h> |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 33 | #include <linux/of.h> |
| 34 | #include <linux/of_device.h> |
| 35 | #include <linux/of_address.h> |
| 36 | #include <linux/of_irq.h> |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 37 | #include <linux/delay.h> |
| 38 | #include <linux/crypto.h> |
| 39 | #include <linux/cryptohash.h> |
| 40 | #include <crypto/scatterwalk.h> |
| 41 | #include <crypto/algapi.h> |
| 42 | #include <crypto/sha.h> |
| 43 | #include <crypto/hash.h> |
| 44 | #include <crypto/internal/hash.h> |
| 45 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 46 | #define MD5_DIGEST_SIZE 16 |
| 47 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 48 | #define SHA_REG_IDIGEST(dd, x) ((dd)->pdata->idigest_ofs + ((x)*0x04)) |
| 49 | #define SHA_REG_DIN(dd, x) ((dd)->pdata->din_ofs + ((x) * 0x04)) |
| 50 | #define SHA_REG_DIGCNT(dd) ((dd)->pdata->digcnt_ofs) |
| 51 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 52 | #define SHA_REG_ODIGEST(dd, x) ((dd)->pdata->odigest_ofs + (x * 0x04)) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 53 | |
| 54 | #define SHA_REG_CTRL 0x18 |
| 55 | #define SHA_REG_CTRL_LENGTH (0xFFFFFFFF << 5) |
| 56 | #define SHA_REG_CTRL_CLOSE_HASH (1 << 4) |
| 57 | #define SHA_REG_CTRL_ALGO_CONST (1 << 3) |
| 58 | #define SHA_REG_CTRL_ALGO (1 << 2) |
| 59 | #define SHA_REG_CTRL_INPUT_READY (1 << 1) |
| 60 | #define SHA_REG_CTRL_OUTPUT_READY (1 << 0) |
| 61 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 62 | #define SHA_REG_REV(dd) ((dd)->pdata->rev_ofs) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 63 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 64 | #define SHA_REG_MASK(dd) ((dd)->pdata->mask_ofs) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 65 | #define SHA_REG_MASK_DMA_EN (1 << 3) |
| 66 | #define SHA_REG_MASK_IT_EN (1 << 2) |
| 67 | #define SHA_REG_MASK_SOFTRESET (1 << 1) |
| 68 | #define SHA_REG_AUTOIDLE (1 << 0) |
| 69 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 70 | #define SHA_REG_SYSSTATUS(dd) ((dd)->pdata->sysstatus_ofs) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 71 | #define SHA_REG_SYSSTATUS_RESETDONE (1 << 0) |
| 72 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 73 | #define SHA_REG_MODE(dd) ((dd)->pdata->mode_ofs) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 74 | #define SHA_REG_MODE_HMAC_OUTER_HASH (1 << 7) |
| 75 | #define SHA_REG_MODE_HMAC_KEY_PROC (1 << 5) |
| 76 | #define SHA_REG_MODE_CLOSE_HASH (1 << 4) |
| 77 | #define SHA_REG_MODE_ALGO_CONSTANT (1 << 3) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 78 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 79 | #define SHA_REG_MODE_ALGO_MASK (7 << 0) |
| 80 | #define SHA_REG_MODE_ALGO_MD5_128 (0 << 1) |
| 81 | #define SHA_REG_MODE_ALGO_SHA1_160 (1 << 1) |
| 82 | #define SHA_REG_MODE_ALGO_SHA2_224 (2 << 1) |
| 83 | #define SHA_REG_MODE_ALGO_SHA2_256 (3 << 1) |
| 84 | #define SHA_REG_MODE_ALGO_SHA2_384 (1 << 0) |
| 85 | #define SHA_REG_MODE_ALGO_SHA2_512 (3 << 0) |
| 86 | |
| 87 | #define SHA_REG_LENGTH(dd) ((dd)->pdata->length_ofs) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 88 | |
| 89 | #define SHA_REG_IRQSTATUS 0x118 |
| 90 | #define SHA_REG_IRQSTATUS_CTX_RDY (1 << 3) |
| 91 | #define SHA_REG_IRQSTATUS_PARTHASH_RDY (1 << 2) |
| 92 | #define SHA_REG_IRQSTATUS_INPUT_RDY (1 << 1) |
| 93 | #define SHA_REG_IRQSTATUS_OUTPUT_RDY (1 << 0) |
| 94 | |
| 95 | #define SHA_REG_IRQENA 0x11C |
| 96 | #define SHA_REG_IRQENA_CTX_RDY (1 << 3) |
| 97 | #define SHA_REG_IRQENA_PARTHASH_RDY (1 << 2) |
| 98 | #define SHA_REG_IRQENA_INPUT_RDY (1 << 1) |
| 99 | #define SHA_REG_IRQENA_OUTPUT_RDY (1 << 0) |
| 100 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 101 | #define DEFAULT_TIMEOUT_INTERVAL HZ |
| 102 | |
Tero Kristo | e93f767 | 2016-06-22 16:23:34 +0300 | [diff] [blame] | 103 | #define DEFAULT_AUTOSUSPEND_DELAY 1000 |
| 104 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 105 | /* mostly device flags */ |
| 106 | #define FLAGS_BUSY 0 |
| 107 | #define FLAGS_FINAL 1 |
| 108 | #define FLAGS_DMA_ACTIVE 2 |
| 109 | #define FLAGS_OUTPUT_READY 3 |
| 110 | #define FLAGS_INIT 4 |
| 111 | #define FLAGS_CPU 5 |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 112 | #define FLAGS_DMA_READY 6 |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 113 | #define FLAGS_AUTO_XOR 7 |
| 114 | #define FLAGS_BE32_SHA1 8 |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 115 | /* context flags */ |
| 116 | #define FLAGS_FINUP 16 |
| 117 | #define FLAGS_SG 17 |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 118 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 119 | #define FLAGS_MODE_SHIFT 18 |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 120 | #define FLAGS_MODE_MASK (SHA_REG_MODE_ALGO_MASK << FLAGS_MODE_SHIFT) |
| 121 | #define FLAGS_MODE_MD5 (SHA_REG_MODE_ALGO_MD5_128 << FLAGS_MODE_SHIFT) |
| 122 | #define FLAGS_MODE_SHA1 (SHA_REG_MODE_ALGO_SHA1_160 << FLAGS_MODE_SHIFT) |
| 123 | #define FLAGS_MODE_SHA224 (SHA_REG_MODE_ALGO_SHA2_224 << FLAGS_MODE_SHIFT) |
| 124 | #define FLAGS_MODE_SHA256 (SHA_REG_MODE_ALGO_SHA2_256 << FLAGS_MODE_SHIFT) |
| 125 | #define FLAGS_MODE_SHA384 (SHA_REG_MODE_ALGO_SHA2_384 << FLAGS_MODE_SHIFT) |
| 126 | #define FLAGS_MODE_SHA512 (SHA_REG_MODE_ALGO_SHA2_512 << FLAGS_MODE_SHIFT) |
| 127 | |
| 128 | #define FLAGS_HMAC 21 |
| 129 | #define FLAGS_ERROR 22 |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 130 | |
| 131 | #define OP_UPDATE 1 |
| 132 | #define OP_FINAL 2 |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 133 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 134 | #define OMAP_ALIGN_MASK (sizeof(u32)-1) |
| 135 | #define OMAP_ALIGNED __attribute__((aligned(sizeof(u32)))) |
| 136 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 137 | #define BUFLEN PAGE_SIZE |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 138 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 139 | struct omap_sham_dev; |
| 140 | |
| 141 | struct omap_sham_reqctx { |
| 142 | struct omap_sham_dev *dd; |
| 143 | unsigned long flags; |
| 144 | unsigned long op; |
| 145 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 146 | u8 digest[SHA512_DIGEST_SIZE] OMAP_ALIGNED; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 147 | size_t digcnt; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 148 | size_t bufcnt; |
| 149 | size_t buflen; |
| 150 | dma_addr_t dma_addr; |
| 151 | |
| 152 | /* walk state */ |
| 153 | struct scatterlist *sg; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 154 | struct scatterlist sgl; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 155 | unsigned int offset; /* offset in current sg */ |
| 156 | unsigned int total; /* total request */ |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 157 | |
| 158 | u8 buffer[0] OMAP_ALIGNED; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 159 | }; |
| 160 | |
| 161 | struct omap_sham_hmac_ctx { |
| 162 | struct crypto_shash *shash; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 163 | u8 ipad[SHA512_BLOCK_SIZE] OMAP_ALIGNED; |
| 164 | u8 opad[SHA512_BLOCK_SIZE] OMAP_ALIGNED; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 165 | }; |
| 166 | |
| 167 | struct omap_sham_ctx { |
| 168 | struct omap_sham_dev *dd; |
| 169 | |
| 170 | unsigned long flags; |
| 171 | |
| 172 | /* fallback stuff */ |
| 173 | struct crypto_shash *fallback; |
| 174 | |
| 175 | struct omap_sham_hmac_ctx base[0]; |
| 176 | }; |
| 177 | |
Tero Kristo | 65e7a54 | 2016-06-22 16:23:35 +0300 | [diff] [blame] | 178 | #define OMAP_SHAM_QUEUE_LENGTH 10 |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 179 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 180 | struct omap_sham_algs_info { |
| 181 | struct ahash_alg *algs_list; |
| 182 | unsigned int size; |
| 183 | unsigned int registered; |
| 184 | }; |
| 185 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 186 | struct omap_sham_pdata { |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 187 | struct omap_sham_algs_info *algs_info; |
| 188 | unsigned int algs_info_size; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 189 | unsigned long flags; |
| 190 | int digest_size; |
| 191 | |
| 192 | void (*copy_hash)(struct ahash_request *req, int out); |
| 193 | void (*write_ctrl)(struct omap_sham_dev *dd, size_t length, |
| 194 | int final, int dma); |
| 195 | void (*trigger)(struct omap_sham_dev *dd, size_t length); |
| 196 | int (*poll_irq)(struct omap_sham_dev *dd); |
| 197 | irqreturn_t (*intr_hdlr)(int irq, void *dev_id); |
| 198 | |
| 199 | u32 odigest_ofs; |
| 200 | u32 idigest_ofs; |
| 201 | u32 din_ofs; |
| 202 | u32 digcnt_ofs; |
| 203 | u32 rev_ofs; |
| 204 | u32 mask_ofs; |
| 205 | u32 sysstatus_ofs; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 206 | u32 mode_ofs; |
| 207 | u32 length_ofs; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 208 | |
| 209 | u32 major_mask; |
| 210 | u32 major_shift; |
| 211 | u32 minor_mask; |
| 212 | u32 minor_shift; |
| 213 | }; |
| 214 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 215 | struct omap_sham_dev { |
| 216 | struct list_head list; |
| 217 | unsigned long phys_base; |
| 218 | struct device *dev; |
| 219 | void __iomem *io_base; |
| 220 | int irq; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 221 | spinlock_t lock; |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 222 | int err; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 223 | struct dma_chan *dma_lch; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 224 | struct tasklet_struct done_task; |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 225 | u8 polling_mode; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 226 | |
| 227 | unsigned long flags; |
| 228 | struct crypto_queue queue; |
| 229 | struct ahash_request *req; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 230 | |
| 231 | const struct omap_sham_pdata *pdata; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 232 | }; |
| 233 | |
| 234 | struct omap_sham_drv { |
| 235 | struct list_head dev_list; |
| 236 | spinlock_t lock; |
| 237 | unsigned long flags; |
| 238 | }; |
| 239 | |
| 240 | static struct omap_sham_drv sham = { |
| 241 | .dev_list = LIST_HEAD_INIT(sham.dev_list), |
| 242 | .lock = __SPIN_LOCK_UNLOCKED(sham.lock), |
| 243 | }; |
| 244 | |
| 245 | static inline u32 omap_sham_read(struct omap_sham_dev *dd, u32 offset) |
| 246 | { |
| 247 | return __raw_readl(dd->io_base + offset); |
| 248 | } |
| 249 | |
| 250 | static inline void omap_sham_write(struct omap_sham_dev *dd, |
| 251 | u32 offset, u32 value) |
| 252 | { |
| 253 | __raw_writel(value, dd->io_base + offset); |
| 254 | } |
| 255 | |
| 256 | static inline void omap_sham_write_mask(struct omap_sham_dev *dd, u32 address, |
| 257 | u32 value, u32 mask) |
| 258 | { |
| 259 | u32 val; |
| 260 | |
| 261 | val = omap_sham_read(dd, address); |
| 262 | val &= ~mask; |
| 263 | val |= value; |
| 264 | omap_sham_write(dd, address, val); |
| 265 | } |
| 266 | |
| 267 | static inline int omap_sham_wait(struct omap_sham_dev *dd, u32 offset, u32 bit) |
| 268 | { |
| 269 | unsigned long timeout = jiffies + DEFAULT_TIMEOUT_INTERVAL; |
| 270 | |
| 271 | while (!(omap_sham_read(dd, offset) & bit)) { |
| 272 | if (time_is_before_jiffies(timeout)) |
| 273 | return -ETIMEDOUT; |
| 274 | } |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 279 | static void omap_sham_copy_hash_omap2(struct ahash_request *req, int out) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 280 | { |
| 281 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 282 | struct omap_sham_dev *dd = ctx->dd; |
Dmitry Kasatkin | 0c3cf4c | 2010-11-19 16:04:22 +0200 | [diff] [blame] | 283 | u32 *hash = (u32 *)ctx->digest; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 284 | int i; |
| 285 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 286 | for (i = 0; i < dd->pdata->digest_size / sizeof(u32); i++) { |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 287 | if (out) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 288 | hash[i] = omap_sham_read(dd, SHA_REG_IDIGEST(dd, i)); |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 289 | else |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 290 | omap_sham_write(dd, SHA_REG_IDIGEST(dd, i), hash[i]); |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 291 | } |
| 292 | } |
| 293 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 294 | static void omap_sham_copy_hash_omap4(struct ahash_request *req, int out) |
| 295 | { |
| 296 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 297 | struct omap_sham_dev *dd = ctx->dd; |
| 298 | int i; |
| 299 | |
| 300 | if (ctx->flags & BIT(FLAGS_HMAC)) { |
| 301 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(dd->req); |
| 302 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 303 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 304 | u32 *opad = (u32 *)bctx->opad; |
| 305 | |
| 306 | for (i = 0; i < dd->pdata->digest_size / sizeof(u32); i++) { |
| 307 | if (out) |
| 308 | opad[i] = omap_sham_read(dd, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 309 | SHA_REG_ODIGEST(dd, i)); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 310 | else |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 311 | omap_sham_write(dd, SHA_REG_ODIGEST(dd, i), |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 312 | opad[i]); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | omap_sham_copy_hash_omap2(req, out); |
| 317 | } |
| 318 | |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 319 | static void omap_sham_copy_ready_hash(struct ahash_request *req) |
| 320 | { |
| 321 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 322 | u32 *in = (u32 *)ctx->digest; |
| 323 | u32 *hash = (u32 *)req->result; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 324 | int i, d, big_endian = 0; |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 325 | |
| 326 | if (!hash) |
| 327 | return; |
| 328 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 329 | switch (ctx->flags & FLAGS_MODE_MASK) { |
| 330 | case FLAGS_MODE_MD5: |
| 331 | d = MD5_DIGEST_SIZE / sizeof(u32); |
| 332 | break; |
| 333 | case FLAGS_MODE_SHA1: |
| 334 | /* OMAP2 SHA1 is big endian */ |
| 335 | if (test_bit(FLAGS_BE32_SHA1, &ctx->dd->flags)) |
| 336 | big_endian = 1; |
| 337 | d = SHA1_DIGEST_SIZE / sizeof(u32); |
| 338 | break; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 339 | case FLAGS_MODE_SHA224: |
| 340 | d = SHA224_DIGEST_SIZE / sizeof(u32); |
| 341 | break; |
| 342 | case FLAGS_MODE_SHA256: |
| 343 | d = SHA256_DIGEST_SIZE / sizeof(u32); |
| 344 | break; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 345 | case FLAGS_MODE_SHA384: |
| 346 | d = SHA384_DIGEST_SIZE / sizeof(u32); |
| 347 | break; |
| 348 | case FLAGS_MODE_SHA512: |
| 349 | d = SHA512_DIGEST_SIZE / sizeof(u32); |
| 350 | break; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 351 | default: |
| 352 | d = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 353 | } |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 354 | |
| 355 | if (big_endian) |
| 356 | for (i = 0; i < d; i++) |
| 357 | hash[i] = be32_to_cpu(in[i]); |
| 358 | else |
| 359 | for (i = 0; i < d; i++) |
| 360 | hash[i] = le32_to_cpu(in[i]); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 361 | } |
| 362 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 363 | static int omap_sham_hw_init(struct omap_sham_dev *dd) |
| 364 | { |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 365 | int err; |
| 366 | |
| 367 | err = pm_runtime_get_sync(dd->dev); |
| 368 | if (err < 0) { |
| 369 | dev_err(dd->dev, "failed to get sync: %d\n", err); |
| 370 | return err; |
| 371 | } |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 372 | |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 373 | if (!test_bit(FLAGS_INIT, &dd->flags)) { |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 374 | set_bit(FLAGS_INIT, &dd->flags); |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 375 | dd->err = 0; |
| 376 | } |
| 377 | |
| 378 | return 0; |
| 379 | } |
| 380 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 381 | static void omap_sham_write_ctrl_omap2(struct omap_sham_dev *dd, size_t length, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 382 | int final, int dma) |
| 383 | { |
| 384 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 385 | u32 val = length << 5, mask; |
| 386 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 387 | if (likely(ctx->digcnt)) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 388 | omap_sham_write(dd, SHA_REG_DIGCNT(dd), ctx->digcnt); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 389 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 390 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 391 | SHA_REG_MASK_IT_EN | (dma ? SHA_REG_MASK_DMA_EN : 0), |
| 392 | SHA_REG_MASK_IT_EN | SHA_REG_MASK_DMA_EN); |
| 393 | /* |
| 394 | * Setting ALGO_CONST only for the first iteration |
| 395 | * and CLOSE_HASH only for the last one. |
| 396 | */ |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 397 | if ((ctx->flags & FLAGS_MODE_MASK) == FLAGS_MODE_SHA1) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 398 | val |= SHA_REG_CTRL_ALGO; |
| 399 | if (!ctx->digcnt) |
| 400 | val |= SHA_REG_CTRL_ALGO_CONST; |
| 401 | if (final) |
| 402 | val |= SHA_REG_CTRL_CLOSE_HASH; |
| 403 | |
| 404 | mask = SHA_REG_CTRL_ALGO_CONST | SHA_REG_CTRL_CLOSE_HASH | |
| 405 | SHA_REG_CTRL_ALGO | SHA_REG_CTRL_LENGTH; |
| 406 | |
| 407 | omap_sham_write_mask(dd, SHA_REG_CTRL, val, mask); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 408 | } |
| 409 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 410 | static void omap_sham_trigger_omap2(struct omap_sham_dev *dd, size_t length) |
| 411 | { |
| 412 | } |
| 413 | |
| 414 | static int omap_sham_poll_irq_omap2(struct omap_sham_dev *dd) |
| 415 | { |
| 416 | return omap_sham_wait(dd, SHA_REG_CTRL, SHA_REG_CTRL_INPUT_READY); |
| 417 | } |
| 418 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 419 | static int get_block_size(struct omap_sham_reqctx *ctx) |
| 420 | { |
| 421 | int d; |
| 422 | |
| 423 | switch (ctx->flags & FLAGS_MODE_MASK) { |
| 424 | case FLAGS_MODE_MD5: |
| 425 | case FLAGS_MODE_SHA1: |
| 426 | d = SHA1_BLOCK_SIZE; |
| 427 | break; |
| 428 | case FLAGS_MODE_SHA224: |
| 429 | case FLAGS_MODE_SHA256: |
| 430 | d = SHA256_BLOCK_SIZE; |
| 431 | break; |
| 432 | case FLAGS_MODE_SHA384: |
| 433 | case FLAGS_MODE_SHA512: |
| 434 | d = SHA512_BLOCK_SIZE; |
| 435 | break; |
| 436 | default: |
| 437 | d = 0; |
| 438 | } |
| 439 | |
| 440 | return d; |
| 441 | } |
| 442 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 443 | static void omap_sham_write_n(struct omap_sham_dev *dd, u32 offset, |
| 444 | u32 *value, int count) |
| 445 | { |
| 446 | for (; count--; value++, offset += 4) |
| 447 | omap_sham_write(dd, offset, *value); |
| 448 | } |
| 449 | |
| 450 | static void omap_sham_write_ctrl_omap4(struct omap_sham_dev *dd, size_t length, |
| 451 | int final, int dma) |
| 452 | { |
| 453 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 454 | u32 val, mask; |
| 455 | |
| 456 | /* |
| 457 | * Setting ALGO_CONST only for the first iteration and |
| 458 | * CLOSE_HASH only for the last one. Note that flags mode bits |
| 459 | * correspond to algorithm encoding in mode register. |
| 460 | */ |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 461 | val = (ctx->flags & FLAGS_MODE_MASK) >> (FLAGS_MODE_SHIFT); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 462 | if (!ctx->digcnt) { |
| 463 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(dd->req); |
| 464 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 465 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 466 | int bs, nr_dr; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 467 | |
| 468 | val |= SHA_REG_MODE_ALGO_CONSTANT; |
| 469 | |
| 470 | if (ctx->flags & BIT(FLAGS_HMAC)) { |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 471 | bs = get_block_size(ctx); |
| 472 | nr_dr = bs / (2 * sizeof(u32)); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 473 | val |= SHA_REG_MODE_HMAC_KEY_PROC; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 474 | omap_sham_write_n(dd, SHA_REG_ODIGEST(dd, 0), |
| 475 | (u32 *)bctx->ipad, nr_dr); |
| 476 | omap_sham_write_n(dd, SHA_REG_IDIGEST(dd, 0), |
| 477 | (u32 *)bctx->ipad + nr_dr, nr_dr); |
| 478 | ctx->digcnt += bs; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 479 | } |
| 480 | } |
| 481 | |
| 482 | if (final) { |
| 483 | val |= SHA_REG_MODE_CLOSE_HASH; |
| 484 | |
| 485 | if (ctx->flags & BIT(FLAGS_HMAC)) |
| 486 | val |= SHA_REG_MODE_HMAC_OUTER_HASH; |
| 487 | } |
| 488 | |
| 489 | mask = SHA_REG_MODE_ALGO_CONSTANT | SHA_REG_MODE_CLOSE_HASH | |
| 490 | SHA_REG_MODE_ALGO_MASK | SHA_REG_MODE_HMAC_OUTER_HASH | |
| 491 | SHA_REG_MODE_HMAC_KEY_PROC; |
| 492 | |
| 493 | dev_dbg(dd->dev, "ctrl: %08x, flags: %08lx\n", val, ctx->flags); |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 494 | omap_sham_write_mask(dd, SHA_REG_MODE(dd), val, mask); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 495 | omap_sham_write(dd, SHA_REG_IRQENA, SHA_REG_IRQENA_OUTPUT_RDY); |
| 496 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), |
| 497 | SHA_REG_MASK_IT_EN | |
| 498 | (dma ? SHA_REG_MASK_DMA_EN : 0), |
| 499 | SHA_REG_MASK_IT_EN | SHA_REG_MASK_DMA_EN); |
| 500 | } |
| 501 | |
| 502 | static void omap_sham_trigger_omap4(struct omap_sham_dev *dd, size_t length) |
| 503 | { |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 504 | omap_sham_write(dd, SHA_REG_LENGTH(dd), length); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | static int omap_sham_poll_irq_omap4(struct omap_sham_dev *dd) |
| 508 | { |
| 509 | return omap_sham_wait(dd, SHA_REG_IRQSTATUS, |
| 510 | SHA_REG_IRQSTATUS_INPUT_RDY); |
| 511 | } |
| 512 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 513 | static int omap_sham_xmit_cpu(struct omap_sham_dev *dd, const u8 *buf, |
| 514 | size_t length, int final) |
| 515 | { |
| 516 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 517 | int count, len32, bs32, offset = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 518 | const u32 *buffer = (const u32 *)buf; |
| 519 | |
| 520 | dev_dbg(dd->dev, "xmit_cpu: digcnt: %d, length: %d, final: %d\n", |
| 521 | ctx->digcnt, length, final); |
| 522 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 523 | dd->pdata->write_ctrl(dd, length, final, 0); |
| 524 | dd->pdata->trigger(dd, length); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 525 | |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 526 | /* should be non-zero before next lines to disable clocks later */ |
| 527 | ctx->digcnt += length; |
| 528 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 529 | if (final) |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 530 | set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 531 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 532 | set_bit(FLAGS_CPU, &dd->flags); |
| 533 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 534 | len32 = DIV_ROUND_UP(length, sizeof(u32)); |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 535 | bs32 = get_block_size(ctx) / sizeof(u32); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 536 | |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 537 | while (len32) { |
| 538 | if (dd->pdata->poll_irq(dd)) |
| 539 | return -ETIMEDOUT; |
| 540 | |
| 541 | for (count = 0; count < min(len32, bs32); count++, offset++) |
| 542 | omap_sham_write(dd, SHA_REG_DIN(dd, count), |
| 543 | buffer[offset]); |
| 544 | len32 -= min(len32, bs32); |
| 545 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 546 | |
| 547 | return -EINPROGRESS; |
| 548 | } |
| 549 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 550 | static void omap_sham_dma_callback(void *param) |
| 551 | { |
| 552 | struct omap_sham_dev *dd = param; |
| 553 | |
| 554 | set_bit(FLAGS_DMA_READY, &dd->flags); |
| 555 | tasklet_schedule(&dd->done_task); |
| 556 | } |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 557 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 558 | static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr, |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 559 | size_t length, int final, int is_sg) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 560 | { |
| 561 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 562 | struct dma_async_tx_descriptor *tx; |
| 563 | struct dma_slave_config cfg; |
Lokesh Vutla | f5e4626 | 2013-08-20 20:32:35 +0530 | [diff] [blame] | 564 | int len32, ret, dma_min = get_block_size(ctx); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 565 | |
| 566 | dev_dbg(dd->dev, "xmit_dma: digcnt: %d, length: %d, final: %d\n", |
| 567 | ctx->digcnt, length, final); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 568 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 569 | memset(&cfg, 0, sizeof(cfg)); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 570 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 571 | cfg.dst_addr = dd->phys_base + SHA_REG_DIN(dd, 0); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 572 | cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; |
Lokesh Vutla | f5e4626 | 2013-08-20 20:32:35 +0530 | [diff] [blame] | 573 | cfg.dst_maxburst = dma_min / DMA_SLAVE_BUSWIDTH_4_BYTES; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 574 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 575 | ret = dmaengine_slave_config(dd->dma_lch, &cfg); |
| 576 | if (ret) { |
| 577 | pr_err("omap-sham: can't configure dmaengine slave: %d\n", ret); |
| 578 | return ret; |
| 579 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 580 | |
Lokesh Vutla | f5e4626 | 2013-08-20 20:32:35 +0530 | [diff] [blame] | 581 | len32 = DIV_ROUND_UP(length, dma_min) * dma_min; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 582 | |
| 583 | if (is_sg) { |
| 584 | /* |
| 585 | * The SG entry passed in may not have the 'length' member |
| 586 | * set correctly so use a local SG entry (sgl) with the |
| 587 | * proper value for 'length' instead. If this is not done, |
| 588 | * the dmaengine may try to DMA the incorrect amount of data. |
| 589 | */ |
| 590 | sg_init_table(&ctx->sgl, 1); |
Christoph Hellwig | 89e2a84 | 2015-08-07 18:15:15 +0200 | [diff] [blame] | 591 | sg_assign_page(&ctx->sgl, sg_page(ctx->sg)); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 592 | ctx->sgl.offset = ctx->sg->offset; |
| 593 | sg_dma_len(&ctx->sgl) = len32; |
| 594 | sg_dma_address(&ctx->sgl) = sg_dma_address(ctx->sg); |
| 595 | |
| 596 | tx = dmaengine_prep_slave_sg(dd->dma_lch, &ctx->sgl, 1, |
| 597 | DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
| 598 | } else { |
| 599 | tx = dmaengine_prep_slave_single(dd->dma_lch, dma_addr, len32, |
| 600 | DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
| 601 | } |
| 602 | |
| 603 | if (!tx) { |
| 604 | dev_err(dd->dev, "prep_slave_sg/single() failed\n"); |
| 605 | return -EINVAL; |
| 606 | } |
| 607 | |
| 608 | tx->callback = omap_sham_dma_callback; |
| 609 | tx->callback_param = dd; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 610 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 611 | dd->pdata->write_ctrl(dd, length, final, 1); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 612 | |
| 613 | ctx->digcnt += length; |
| 614 | |
| 615 | if (final) |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 616 | set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 617 | |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 618 | set_bit(FLAGS_DMA_ACTIVE, &dd->flags); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 619 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 620 | dmaengine_submit(tx); |
| 621 | dma_async_issue_pending(dd->dma_lch); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 622 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 623 | dd->pdata->trigger(dd, length); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 624 | |
| 625 | return -EINPROGRESS; |
| 626 | } |
| 627 | |
| 628 | static size_t omap_sham_append_buffer(struct omap_sham_reqctx *ctx, |
| 629 | const u8 *data, size_t length) |
| 630 | { |
| 631 | size_t count = min(length, ctx->buflen - ctx->bufcnt); |
| 632 | |
| 633 | count = min(count, ctx->total); |
| 634 | if (count <= 0) |
| 635 | return 0; |
| 636 | memcpy(ctx->buffer + ctx->bufcnt, data, count); |
| 637 | ctx->bufcnt += count; |
| 638 | |
| 639 | return count; |
| 640 | } |
| 641 | |
| 642 | static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx) |
| 643 | { |
| 644 | size_t count; |
Joel Fernandes | 26a0548 | 2014-03-07 10:28:46 -0600 | [diff] [blame] | 645 | const u8 *vaddr; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 646 | |
| 647 | while (ctx->sg) { |
Joel Fernandes | 26a0548 | 2014-03-07 10:28:46 -0600 | [diff] [blame] | 648 | vaddr = kmap_atomic(sg_page(ctx->sg)); |
Vutla, Lokesh | 13cf394 | 2015-04-02 15:32:45 +0530 | [diff] [blame] | 649 | vaddr += ctx->sg->offset; |
Joel Fernandes | 26a0548 | 2014-03-07 10:28:46 -0600 | [diff] [blame] | 650 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 651 | count = omap_sham_append_buffer(ctx, |
Joel Fernandes | 26a0548 | 2014-03-07 10:28:46 -0600 | [diff] [blame] | 652 | vaddr + ctx->offset, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 653 | ctx->sg->length - ctx->offset); |
Joel Fernandes | 26a0548 | 2014-03-07 10:28:46 -0600 | [diff] [blame] | 654 | |
| 655 | kunmap_atomic((void *)vaddr); |
| 656 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 657 | if (!count) |
| 658 | break; |
| 659 | ctx->offset += count; |
| 660 | ctx->total -= count; |
| 661 | if (ctx->offset == ctx->sg->length) { |
| 662 | ctx->sg = sg_next(ctx->sg); |
| 663 | if (ctx->sg) |
| 664 | ctx->offset = 0; |
| 665 | else |
| 666 | ctx->total = 0; |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | return 0; |
| 671 | } |
| 672 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 673 | static int omap_sham_xmit_dma_map(struct omap_sham_dev *dd, |
| 674 | struct omap_sham_reqctx *ctx, |
| 675 | size_t length, int final) |
| 676 | { |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 677 | int ret; |
| 678 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 679 | ctx->dma_addr = dma_map_single(dd->dev, ctx->buffer, ctx->buflen, |
| 680 | DMA_TO_DEVICE); |
| 681 | if (dma_mapping_error(dd->dev, ctx->dma_addr)) { |
| 682 | dev_err(dd->dev, "dma %u bytes error\n", ctx->buflen); |
| 683 | return -EINVAL; |
| 684 | } |
| 685 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 686 | ctx->flags &= ~BIT(FLAGS_SG); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 687 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 688 | ret = omap_sham_xmit_dma(dd, ctx->dma_addr, length, final, 0); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 689 | if (ret != -EINPROGRESS) |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 690 | dma_unmap_single(dd->dev, ctx->dma_addr, ctx->buflen, |
| 691 | DMA_TO_DEVICE); |
| 692 | |
| 693 | return ret; |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 694 | } |
| 695 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 696 | static int omap_sham_update_dma_slow(struct omap_sham_dev *dd) |
| 697 | { |
| 698 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 699 | unsigned int final; |
| 700 | size_t count; |
| 701 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 702 | omap_sham_append_sg(ctx); |
| 703 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 704 | final = (ctx->flags & BIT(FLAGS_FINUP)) && !ctx->total; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 705 | |
| 706 | dev_dbg(dd->dev, "slow: bufcnt: %u, digcnt: %d, final: %d\n", |
| 707 | ctx->bufcnt, ctx->digcnt, final); |
| 708 | |
| 709 | if (final || (ctx->bufcnt == ctx->buflen && ctx->total)) { |
| 710 | count = ctx->bufcnt; |
| 711 | ctx->bufcnt = 0; |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 712 | return omap_sham_xmit_dma_map(dd, ctx, count, final); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | return 0; |
| 716 | } |
| 717 | |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 718 | /* Start address alignment */ |
| 719 | #define SG_AA(sg) (IS_ALIGNED(sg->offset, sizeof(u32))) |
| 720 | /* SHA1 block size alignment */ |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 721 | #define SG_SA(sg, bs) (IS_ALIGNED(sg->length, bs)) |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 722 | |
| 723 | static int omap_sham_update_dma_start(struct omap_sham_dev *dd) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 724 | { |
| 725 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 726 | unsigned int length, final, tail; |
| 727 | struct scatterlist *sg; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 728 | int ret, bs; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 729 | |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 730 | if (!ctx->total) |
| 731 | return 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 732 | |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 733 | if (ctx->bufcnt || ctx->offset) |
| 734 | return omap_sham_update_dma_slow(dd); |
| 735 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 736 | /* |
| 737 | * Don't use the sg interface when the transfer size is less |
| 738 | * than the number of elements in a DMA frame. Otherwise, |
| 739 | * the dmaengine infrastructure will calculate that it needs |
| 740 | * to transfer 0 frames which ultimately fails. |
| 741 | */ |
Lokesh Vutla | f5e4626 | 2013-08-20 20:32:35 +0530 | [diff] [blame] | 742 | if (ctx->total < get_block_size(ctx)) |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 743 | return omap_sham_update_dma_slow(dd); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 744 | |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 745 | dev_dbg(dd->dev, "fast: digcnt: %d, bufcnt: %u, total: %u\n", |
| 746 | ctx->digcnt, ctx->bufcnt, ctx->total); |
| 747 | |
| 748 | sg = ctx->sg; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 749 | bs = get_block_size(ctx); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 750 | |
| 751 | if (!SG_AA(sg)) |
| 752 | return omap_sham_update_dma_slow(dd); |
| 753 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 754 | if (!sg_is_last(sg) && !SG_SA(sg, bs)) |
| 755 | /* size is not BLOCK_SIZE aligned */ |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 756 | return omap_sham_update_dma_slow(dd); |
| 757 | |
| 758 | length = min(ctx->total, sg->length); |
| 759 | |
| 760 | if (sg_is_last(sg)) { |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 761 | if (!(ctx->flags & BIT(FLAGS_FINUP))) { |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 762 | /* not last sg must be BLOCK_SIZE aligned */ |
| 763 | tail = length & (bs - 1); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 764 | /* without finup() we need one block to close hash */ |
| 765 | if (!tail) |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 766 | tail = bs; |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 767 | length -= tail; |
| 768 | } |
| 769 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 770 | |
| 771 | if (!dma_map_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE)) { |
| 772 | dev_err(dd->dev, "dma_map_sg error\n"); |
| 773 | return -EINVAL; |
| 774 | } |
| 775 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 776 | ctx->flags |= BIT(FLAGS_SG); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 777 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 778 | ctx->total -= length; |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 779 | ctx->offset = length; /* offset where to start slow */ |
| 780 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 781 | final = (ctx->flags & BIT(FLAGS_FINUP)) && !ctx->total; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 782 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 783 | ret = omap_sham_xmit_dma(dd, sg_dma_address(ctx->sg), length, final, 1); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 784 | if (ret != -EINPROGRESS) |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 785 | dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE); |
| 786 | |
| 787 | return ret; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | static int omap_sham_update_cpu(struct omap_sham_dev *dd) |
| 791 | { |
| 792 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 793 | int bufcnt, final; |
| 794 | |
| 795 | if (!ctx->total) |
| 796 | return 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 797 | |
| 798 | omap_sham_append_sg(ctx); |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 799 | |
| 800 | final = (ctx->flags & BIT(FLAGS_FINUP)) && !ctx->total; |
| 801 | |
| 802 | dev_dbg(dd->dev, "cpu: bufcnt: %u, digcnt: %d, final: %d\n", |
| 803 | ctx->bufcnt, ctx->digcnt, final); |
| 804 | |
Lokesh Vutla | acef7b0 | 2013-12-18 19:03:33 +0530 | [diff] [blame] | 805 | if (final || (ctx->bufcnt == ctx->buflen && ctx->total)) { |
| 806 | bufcnt = ctx->bufcnt; |
| 807 | ctx->bufcnt = 0; |
| 808 | return omap_sham_xmit_cpu(dd, ctx->buffer, bufcnt, final); |
| 809 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 810 | |
Lokesh Vutla | acef7b0 | 2013-12-18 19:03:33 +0530 | [diff] [blame] | 811 | return 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | static int omap_sham_update_dma_stop(struct omap_sham_dev *dd) |
| 815 | { |
| 816 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 817 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 818 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 819 | if (ctx->flags & BIT(FLAGS_SG)) { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 820 | dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 821 | if (ctx->sg->length == ctx->offset) { |
| 822 | ctx->sg = sg_next(ctx->sg); |
| 823 | if (ctx->sg) |
| 824 | ctx->offset = 0; |
| 825 | } |
| 826 | } else { |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 827 | dma_unmap_single(dd->dev, ctx->dma_addr, ctx->buflen, |
| 828 | DMA_TO_DEVICE); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 829 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 830 | |
| 831 | return 0; |
| 832 | } |
| 833 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 834 | static int omap_sham_init(struct ahash_request *req) |
| 835 | { |
| 836 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 837 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 838 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 839 | struct omap_sham_dev *dd = NULL, *tmp; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 840 | int bs = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 841 | |
| 842 | spin_lock_bh(&sham.lock); |
| 843 | if (!tctx->dd) { |
| 844 | list_for_each_entry(tmp, &sham.dev_list, list) { |
| 845 | dd = tmp; |
| 846 | break; |
| 847 | } |
| 848 | tctx->dd = dd; |
| 849 | } else { |
| 850 | dd = tctx->dd; |
| 851 | } |
| 852 | spin_unlock_bh(&sham.lock); |
| 853 | |
| 854 | ctx->dd = dd; |
| 855 | |
| 856 | ctx->flags = 0; |
| 857 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 858 | dev_dbg(dd->dev, "init: digest size: %d\n", |
| 859 | crypto_ahash_digestsize(tfm)); |
| 860 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 861 | switch (crypto_ahash_digestsize(tfm)) { |
| 862 | case MD5_DIGEST_SIZE: |
| 863 | ctx->flags |= FLAGS_MODE_MD5; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 864 | bs = SHA1_BLOCK_SIZE; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 865 | break; |
| 866 | case SHA1_DIGEST_SIZE: |
| 867 | ctx->flags |= FLAGS_MODE_SHA1; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 868 | bs = SHA1_BLOCK_SIZE; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 869 | break; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 870 | case SHA224_DIGEST_SIZE: |
| 871 | ctx->flags |= FLAGS_MODE_SHA224; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 872 | bs = SHA224_BLOCK_SIZE; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 873 | break; |
| 874 | case SHA256_DIGEST_SIZE: |
| 875 | ctx->flags |= FLAGS_MODE_SHA256; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 876 | bs = SHA256_BLOCK_SIZE; |
| 877 | break; |
| 878 | case SHA384_DIGEST_SIZE: |
| 879 | ctx->flags |= FLAGS_MODE_SHA384; |
| 880 | bs = SHA384_BLOCK_SIZE; |
| 881 | break; |
| 882 | case SHA512_DIGEST_SIZE: |
| 883 | ctx->flags |= FLAGS_MODE_SHA512; |
| 884 | bs = SHA512_BLOCK_SIZE; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 885 | break; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 886 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 887 | |
| 888 | ctx->bufcnt = 0; |
| 889 | ctx->digcnt = 0; |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 890 | ctx->buflen = BUFLEN; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 891 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 892 | if (tctx->flags & BIT(FLAGS_HMAC)) { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 893 | if (!test_bit(FLAGS_AUTO_XOR, &dd->flags)) { |
| 894 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 895 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 896 | memcpy(ctx->buffer, bctx->ipad, bs); |
| 897 | ctx->bufcnt = bs; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 898 | } |
| 899 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 900 | ctx->flags |= BIT(FLAGS_HMAC); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 901 | } |
| 902 | |
| 903 | return 0; |
| 904 | |
| 905 | } |
| 906 | |
| 907 | static int omap_sham_update_req(struct omap_sham_dev *dd) |
| 908 | { |
| 909 | struct ahash_request *req = dd->req; |
| 910 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 911 | int err; |
| 912 | |
| 913 | dev_dbg(dd->dev, "update_req: total: %u, digcnt: %d, finup: %d\n", |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 914 | ctx->total, ctx->digcnt, (ctx->flags & BIT(FLAGS_FINUP)) != 0); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 915 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 916 | if (ctx->flags & BIT(FLAGS_CPU)) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 917 | err = omap_sham_update_cpu(dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 918 | else |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 919 | err = omap_sham_update_dma_start(dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 920 | |
| 921 | /* wait for dma completion before can take more data */ |
| 922 | dev_dbg(dd->dev, "update: err: %d, digcnt: %d\n", err, ctx->digcnt); |
| 923 | |
| 924 | return err; |
| 925 | } |
| 926 | |
| 927 | static int omap_sham_final_req(struct omap_sham_dev *dd) |
| 928 | { |
| 929 | struct ahash_request *req = dd->req; |
| 930 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 931 | int err = 0, use_dma = 1; |
| 932 | |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 933 | if ((ctx->bufcnt <= get_block_size(ctx)) || dd->polling_mode) |
| 934 | /* |
| 935 | * faster to handle last block with cpu or |
| 936 | * use cpu when dma is not present. |
| 937 | */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 938 | use_dma = 0; |
| 939 | |
| 940 | if (use_dma) |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 941 | err = omap_sham_xmit_dma_map(dd, ctx, ctx->bufcnt, 1); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 942 | else |
| 943 | err = omap_sham_xmit_cpu(dd, ctx->buffer, ctx->bufcnt, 1); |
| 944 | |
| 945 | ctx->bufcnt = 0; |
| 946 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 947 | dev_dbg(dd->dev, "final_req: err: %d\n", err); |
| 948 | |
| 949 | return err; |
| 950 | } |
| 951 | |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 952 | static int omap_sham_finish_hmac(struct ahash_request *req) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 953 | { |
| 954 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); |
| 955 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 956 | int bs = crypto_shash_blocksize(bctx->shash); |
| 957 | int ds = crypto_shash_digestsize(bctx->shash); |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 958 | SHASH_DESC_ON_STACK(shash, bctx->shash); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 959 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 960 | shash->tfm = bctx->shash; |
| 961 | shash->flags = 0; /* not CRYPTO_TFM_REQ_MAY_SLEEP */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 962 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 963 | return crypto_shash_init(shash) ?: |
| 964 | crypto_shash_update(shash, bctx->opad, bs) ?: |
| 965 | crypto_shash_finup(shash, req->result, ds, req->result); |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 966 | } |
| 967 | |
| 968 | static int omap_sham_finish(struct ahash_request *req) |
| 969 | { |
| 970 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 971 | struct omap_sham_dev *dd = ctx->dd; |
| 972 | int err = 0; |
| 973 | |
| 974 | if (ctx->digcnt) { |
| 975 | omap_sham_copy_ready_hash(req); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 976 | if ((ctx->flags & BIT(FLAGS_HMAC)) && |
| 977 | !test_bit(FLAGS_AUTO_XOR, &dd->flags)) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 978 | err = omap_sham_finish_hmac(req); |
| 979 | } |
| 980 | |
| 981 | dev_dbg(dd->dev, "digcnt: %d, bufcnt: %d\n", ctx->digcnt, ctx->bufcnt); |
| 982 | |
| 983 | return err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 984 | } |
| 985 | |
| 986 | static void omap_sham_finish_req(struct ahash_request *req, int err) |
| 987 | { |
| 988 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 989 | struct omap_sham_dev *dd = ctx->dd; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 990 | |
| 991 | if (!err) { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 992 | dd->pdata->copy_hash(req, 1); |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 993 | if (test_bit(FLAGS_FINAL, &dd->flags)) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 994 | err = omap_sham_finish(req); |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 995 | } else { |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 996 | ctx->flags |= BIT(FLAGS_ERROR); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 997 | } |
| 998 | |
Dmitry Kasatkin | 0efd4d8 | 2011-06-02 21:10:12 +0300 | [diff] [blame] | 999 | /* atomic operation is not needed here */ |
| 1000 | dd->flags &= ~(BIT(FLAGS_BUSY) | BIT(FLAGS_FINAL) | BIT(FLAGS_CPU) | |
| 1001 | BIT(FLAGS_DMA_READY) | BIT(FLAGS_OUTPUT_READY)); |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 1002 | |
Tero Kristo | e93f767 | 2016-06-22 16:23:34 +0300 | [diff] [blame] | 1003 | pm_runtime_mark_last_busy(dd->dev); |
| 1004 | pm_runtime_put_autosuspend(dd->dev); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1005 | |
| 1006 | if (req->base.complete) |
| 1007 | req->base.complete(&req->base, err); |
Dmitry Kasatkin | 6cb3ffe | 2011-06-02 21:10:09 +0300 | [diff] [blame] | 1008 | |
| 1009 | /* handle new request */ |
| 1010 | tasklet_schedule(&dd->done_task); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1011 | } |
| 1012 | |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1013 | static int omap_sham_handle_queue(struct omap_sham_dev *dd, |
| 1014 | struct ahash_request *req) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1015 | { |
Dmitry Kasatkin | 6c39d11 | 2010-12-29 21:52:04 +1100 | [diff] [blame] | 1016 | struct crypto_async_request *async_req, *backlog; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1017 | struct omap_sham_reqctx *ctx; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1018 | unsigned long flags; |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1019 | int err = 0, ret = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1020 | |
| 1021 | spin_lock_irqsave(&dd->lock, flags); |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1022 | if (req) |
| 1023 | ret = ahash_enqueue_request(&dd->queue, req); |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 1024 | if (test_bit(FLAGS_BUSY, &dd->flags)) { |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1025 | spin_unlock_irqrestore(&dd->lock, flags); |
| 1026 | return ret; |
| 1027 | } |
Dmitry Kasatkin | 6c39d11 | 2010-12-29 21:52:04 +1100 | [diff] [blame] | 1028 | backlog = crypto_get_backlog(&dd->queue); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1029 | async_req = crypto_dequeue_request(&dd->queue); |
Dmitry Kasatkin | 6c39d11 | 2010-12-29 21:52:04 +1100 | [diff] [blame] | 1030 | if (async_req) |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 1031 | set_bit(FLAGS_BUSY, &dd->flags); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1032 | spin_unlock_irqrestore(&dd->lock, flags); |
| 1033 | |
| 1034 | if (!async_req) |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1035 | return ret; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1036 | |
| 1037 | if (backlog) |
| 1038 | backlog->complete(backlog, -EINPROGRESS); |
| 1039 | |
| 1040 | req = ahash_request_cast(async_req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1041 | dd->req = req; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1042 | ctx = ahash_request_ctx(req); |
| 1043 | |
| 1044 | dev_dbg(dd->dev, "handling new req, op: %lu, nbytes: %d\n", |
| 1045 | ctx->op, req->nbytes); |
| 1046 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1047 | err = omap_sham_hw_init(dd); |
| 1048 | if (err) |
| 1049 | goto err1; |
| 1050 | |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1051 | if (ctx->digcnt) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1052 | /* request has changed - restore hash */ |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1053 | dd->pdata->copy_hash(req, 0); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1054 | |
| 1055 | if (ctx->op == OP_UPDATE) { |
| 1056 | err = omap_sham_update_req(dd); |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1057 | if (err != -EINPROGRESS && (ctx->flags & BIT(FLAGS_FINUP))) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1058 | /* no final() after finup() */ |
| 1059 | err = omap_sham_final_req(dd); |
| 1060 | } else if (ctx->op == OP_FINAL) { |
| 1061 | err = omap_sham_final_req(dd); |
| 1062 | } |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1063 | err1: |
Dmitry Kasatkin | 6cb3ffe | 2011-06-02 21:10:09 +0300 | [diff] [blame] | 1064 | if (err != -EINPROGRESS) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1065 | /* done_task will not finish it, so do it here */ |
| 1066 | omap_sham_finish_req(req, err); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1067 | |
| 1068 | dev_dbg(dd->dev, "exit, err: %d\n", err); |
| 1069 | |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1070 | return ret; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | static int omap_sham_enqueue(struct ahash_request *req, unsigned int op) |
| 1074 | { |
| 1075 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1076 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); |
| 1077 | struct omap_sham_dev *dd = tctx->dd; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1078 | |
| 1079 | ctx->op = op; |
| 1080 | |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1081 | return omap_sham_handle_queue(dd, req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | static int omap_sham_update(struct ahash_request *req) |
| 1085 | { |
| 1086 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1087 | struct omap_sham_dev *dd = ctx->dd; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1088 | int bs = get_block_size(ctx); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1089 | |
| 1090 | if (!req->nbytes) |
| 1091 | return 0; |
| 1092 | |
| 1093 | ctx->total = req->nbytes; |
| 1094 | ctx->sg = req->src; |
| 1095 | ctx->offset = 0; |
| 1096 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1097 | if (ctx->flags & BIT(FLAGS_FINUP)) { |
Bin Liu | 85e0687 | 2016-06-22 16:23:37 +0300 | [diff] [blame] | 1098 | if ((ctx->digcnt + ctx->bufcnt + ctx->total) < 240) { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1099 | /* |
| 1100 | * OMAP HW accel works only with buffers >= 9 |
| 1101 | * will switch to bypass in final() |
| 1102 | * final has the same request and data |
| 1103 | */ |
| 1104 | omap_sham_append_sg(ctx); |
| 1105 | return 0; |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1106 | } else if ((ctx->bufcnt + ctx->total <= bs) || |
| 1107 | dd->polling_mode) { |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 1108 | /* |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1109 | * faster to use CPU for short transfers or |
| 1110 | * use cpu when dma is not present. |
| 1111 | */ |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1112 | ctx->flags |= BIT(FLAGS_CPU); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1113 | } |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 1114 | } else if (ctx->bufcnt + ctx->total < ctx->buflen) { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1115 | omap_sham_append_sg(ctx); |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
Lokesh Vutla | acef7b0 | 2013-12-18 19:03:33 +0530 | [diff] [blame] | 1119 | if (dd->polling_mode) |
| 1120 | ctx->flags |= BIT(FLAGS_CPU); |
| 1121 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1122 | return omap_sham_enqueue(req, OP_UPDATE); |
| 1123 | } |
| 1124 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1125 | static int omap_sham_shash_digest(struct crypto_shash *tfm, u32 flags, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1126 | const u8 *data, unsigned int len, u8 *out) |
| 1127 | { |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1128 | SHASH_DESC_ON_STACK(shash, tfm); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1129 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1130 | shash->tfm = tfm; |
| 1131 | shash->flags = flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1132 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1133 | return crypto_shash_digest(shash, data, len, out); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1134 | } |
| 1135 | |
| 1136 | static int omap_sham_final_shash(struct ahash_request *req) |
| 1137 | { |
| 1138 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); |
| 1139 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1140 | |
| 1141 | return omap_sham_shash_digest(tctx->fallback, req->base.flags, |
| 1142 | ctx->buffer, ctx->bufcnt, req->result); |
| 1143 | } |
| 1144 | |
| 1145 | static int omap_sham_final(struct ahash_request *req) |
| 1146 | { |
| 1147 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1148 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1149 | ctx->flags |= BIT(FLAGS_FINUP); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1150 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1151 | if (ctx->flags & BIT(FLAGS_ERROR)) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1152 | return 0; /* uncompleted hash is not needed */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1153 | |
Bin Liu | 85e0687 | 2016-06-22 16:23:37 +0300 | [diff] [blame] | 1154 | /* |
| 1155 | * OMAP HW accel works only with buffers >= 9. |
| 1156 | * HMAC is always >= 9 because ipad == block size. |
| 1157 | * If buffersize is less than 240, we use fallback SW encoding, |
| 1158 | * as using DMA + HW in this case doesn't provide any benefit. |
| 1159 | */ |
| 1160 | if ((ctx->digcnt + ctx->bufcnt) < 240) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1161 | return omap_sham_final_shash(req); |
| 1162 | else if (ctx->bufcnt) |
| 1163 | return omap_sham_enqueue(req, OP_FINAL); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1164 | |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1165 | /* copy ready hash (+ finalize hmac) */ |
| 1166 | return omap_sham_finish(req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1167 | } |
| 1168 | |
| 1169 | static int omap_sham_finup(struct ahash_request *req) |
| 1170 | { |
| 1171 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1172 | int err1, err2; |
| 1173 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1174 | ctx->flags |= BIT(FLAGS_FINUP); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1175 | |
| 1176 | err1 = omap_sham_update(req); |
Markku Kylanpaa | 455e338 | 2011-04-20 13:34:55 +0300 | [diff] [blame] | 1177 | if (err1 == -EINPROGRESS || err1 == -EBUSY) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1178 | return err1; |
| 1179 | /* |
| 1180 | * final() has to be always called to cleanup resources |
| 1181 | * even if udpate() failed, except EINPROGRESS |
| 1182 | */ |
| 1183 | err2 = omap_sham_final(req); |
| 1184 | |
| 1185 | return err1 ?: err2; |
| 1186 | } |
| 1187 | |
| 1188 | static int omap_sham_digest(struct ahash_request *req) |
| 1189 | { |
| 1190 | return omap_sham_init(req) ?: omap_sham_finup(req); |
| 1191 | } |
| 1192 | |
| 1193 | static int omap_sham_setkey(struct crypto_ahash *tfm, const u8 *key, |
| 1194 | unsigned int keylen) |
| 1195 | { |
| 1196 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 1197 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 1198 | int bs = crypto_shash_blocksize(bctx->shash); |
| 1199 | int ds = crypto_shash_digestsize(bctx->shash); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1200 | struct omap_sham_dev *dd = NULL, *tmp; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1201 | int err, i; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1202 | |
| 1203 | spin_lock_bh(&sham.lock); |
| 1204 | if (!tctx->dd) { |
| 1205 | list_for_each_entry(tmp, &sham.dev_list, list) { |
| 1206 | dd = tmp; |
| 1207 | break; |
| 1208 | } |
| 1209 | tctx->dd = dd; |
| 1210 | } else { |
| 1211 | dd = tctx->dd; |
| 1212 | } |
| 1213 | spin_unlock_bh(&sham.lock); |
| 1214 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1215 | err = crypto_shash_setkey(tctx->fallback, key, keylen); |
| 1216 | if (err) |
| 1217 | return err; |
| 1218 | |
| 1219 | if (keylen > bs) { |
| 1220 | err = omap_sham_shash_digest(bctx->shash, |
| 1221 | crypto_shash_get_flags(bctx->shash), |
| 1222 | key, keylen, bctx->ipad); |
| 1223 | if (err) |
| 1224 | return err; |
| 1225 | keylen = ds; |
| 1226 | } else { |
| 1227 | memcpy(bctx->ipad, key, keylen); |
| 1228 | } |
| 1229 | |
| 1230 | memset(bctx->ipad + keylen, 0, bs - keylen); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1231 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1232 | if (!test_bit(FLAGS_AUTO_XOR, &dd->flags)) { |
| 1233 | memcpy(bctx->opad, bctx->ipad, bs); |
| 1234 | |
| 1235 | for (i = 0; i < bs; i++) { |
| 1236 | bctx->ipad[i] ^= 0x36; |
| 1237 | bctx->opad[i] ^= 0x5c; |
| 1238 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1239 | } |
| 1240 | |
| 1241 | return err; |
| 1242 | } |
| 1243 | |
| 1244 | static int omap_sham_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base) |
| 1245 | { |
| 1246 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm); |
| 1247 | const char *alg_name = crypto_tfm_alg_name(tfm); |
| 1248 | |
| 1249 | /* Allocate a fallback and abort if it failed. */ |
| 1250 | tctx->fallback = crypto_alloc_shash(alg_name, 0, |
| 1251 | CRYPTO_ALG_NEED_FALLBACK); |
| 1252 | if (IS_ERR(tctx->fallback)) { |
| 1253 | pr_err("omap-sham: fallback driver '%s' " |
| 1254 | "could not be loaded.\n", alg_name); |
| 1255 | return PTR_ERR(tctx->fallback); |
| 1256 | } |
| 1257 | |
| 1258 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1259 | sizeof(struct omap_sham_reqctx) + BUFLEN); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1260 | |
| 1261 | if (alg_base) { |
| 1262 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1263 | tctx->flags |= BIT(FLAGS_HMAC); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1264 | bctx->shash = crypto_alloc_shash(alg_base, 0, |
| 1265 | CRYPTO_ALG_NEED_FALLBACK); |
| 1266 | if (IS_ERR(bctx->shash)) { |
| 1267 | pr_err("omap-sham: base driver '%s' " |
| 1268 | "could not be loaded.\n", alg_base); |
| 1269 | crypto_free_shash(tctx->fallback); |
| 1270 | return PTR_ERR(bctx->shash); |
| 1271 | } |
| 1272 | |
| 1273 | } |
| 1274 | |
| 1275 | return 0; |
| 1276 | } |
| 1277 | |
| 1278 | static int omap_sham_cra_init(struct crypto_tfm *tfm) |
| 1279 | { |
| 1280 | return omap_sham_cra_init_alg(tfm, NULL); |
| 1281 | } |
| 1282 | |
| 1283 | static int omap_sham_cra_sha1_init(struct crypto_tfm *tfm) |
| 1284 | { |
| 1285 | return omap_sham_cra_init_alg(tfm, "sha1"); |
| 1286 | } |
| 1287 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1288 | static int omap_sham_cra_sha224_init(struct crypto_tfm *tfm) |
| 1289 | { |
| 1290 | return omap_sham_cra_init_alg(tfm, "sha224"); |
| 1291 | } |
| 1292 | |
| 1293 | static int omap_sham_cra_sha256_init(struct crypto_tfm *tfm) |
| 1294 | { |
| 1295 | return omap_sham_cra_init_alg(tfm, "sha256"); |
| 1296 | } |
| 1297 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1298 | static int omap_sham_cra_md5_init(struct crypto_tfm *tfm) |
| 1299 | { |
| 1300 | return omap_sham_cra_init_alg(tfm, "md5"); |
| 1301 | } |
| 1302 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1303 | static int omap_sham_cra_sha384_init(struct crypto_tfm *tfm) |
| 1304 | { |
| 1305 | return omap_sham_cra_init_alg(tfm, "sha384"); |
| 1306 | } |
| 1307 | |
| 1308 | static int omap_sham_cra_sha512_init(struct crypto_tfm *tfm) |
| 1309 | { |
| 1310 | return omap_sham_cra_init_alg(tfm, "sha512"); |
| 1311 | } |
| 1312 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1313 | static void omap_sham_cra_exit(struct crypto_tfm *tfm) |
| 1314 | { |
| 1315 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm); |
| 1316 | |
| 1317 | crypto_free_shash(tctx->fallback); |
| 1318 | tctx->fallback = NULL; |
| 1319 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1320 | if (tctx->flags & BIT(FLAGS_HMAC)) { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1321 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 1322 | crypto_free_shash(bctx->shash); |
| 1323 | } |
| 1324 | } |
| 1325 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1326 | static struct ahash_alg algs_sha1_md5[] = { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1327 | { |
| 1328 | .init = omap_sham_init, |
| 1329 | .update = omap_sham_update, |
| 1330 | .final = omap_sham_final, |
| 1331 | .finup = omap_sham_finup, |
| 1332 | .digest = omap_sham_digest, |
| 1333 | .halg.digestsize = SHA1_DIGEST_SIZE, |
| 1334 | .halg.base = { |
| 1335 | .cra_name = "sha1", |
| 1336 | .cra_driver_name = "omap-sha1", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1337 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1338 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1339 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1340 | CRYPTO_ALG_ASYNC | |
| 1341 | CRYPTO_ALG_NEED_FALLBACK, |
| 1342 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1343 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
| 1344 | .cra_alignmask = 0, |
| 1345 | .cra_module = THIS_MODULE, |
| 1346 | .cra_init = omap_sham_cra_init, |
| 1347 | .cra_exit = omap_sham_cra_exit, |
| 1348 | } |
| 1349 | }, |
| 1350 | { |
| 1351 | .init = omap_sham_init, |
| 1352 | .update = omap_sham_update, |
| 1353 | .final = omap_sham_final, |
| 1354 | .finup = omap_sham_finup, |
| 1355 | .digest = omap_sham_digest, |
| 1356 | .halg.digestsize = MD5_DIGEST_SIZE, |
| 1357 | .halg.base = { |
| 1358 | .cra_name = "md5", |
| 1359 | .cra_driver_name = "omap-md5", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1360 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1361 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1362 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1363 | CRYPTO_ALG_ASYNC | |
| 1364 | CRYPTO_ALG_NEED_FALLBACK, |
| 1365 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1366 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1367 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1368 | .cra_module = THIS_MODULE, |
| 1369 | .cra_init = omap_sham_cra_init, |
| 1370 | .cra_exit = omap_sham_cra_exit, |
| 1371 | } |
| 1372 | }, |
| 1373 | { |
| 1374 | .init = omap_sham_init, |
| 1375 | .update = omap_sham_update, |
| 1376 | .final = omap_sham_final, |
| 1377 | .finup = omap_sham_finup, |
| 1378 | .digest = omap_sham_digest, |
| 1379 | .setkey = omap_sham_setkey, |
| 1380 | .halg.digestsize = SHA1_DIGEST_SIZE, |
| 1381 | .halg.base = { |
| 1382 | .cra_name = "hmac(sha1)", |
| 1383 | .cra_driver_name = "omap-hmac-sha1", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1384 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1385 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1386 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1387 | CRYPTO_ALG_ASYNC | |
| 1388 | CRYPTO_ALG_NEED_FALLBACK, |
| 1389 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1390 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1391 | sizeof(struct omap_sham_hmac_ctx), |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1392 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1393 | .cra_module = THIS_MODULE, |
| 1394 | .cra_init = omap_sham_cra_sha1_init, |
| 1395 | .cra_exit = omap_sham_cra_exit, |
| 1396 | } |
| 1397 | }, |
| 1398 | { |
| 1399 | .init = omap_sham_init, |
| 1400 | .update = omap_sham_update, |
| 1401 | .final = omap_sham_final, |
| 1402 | .finup = omap_sham_finup, |
| 1403 | .digest = omap_sham_digest, |
| 1404 | .setkey = omap_sham_setkey, |
| 1405 | .halg.digestsize = MD5_DIGEST_SIZE, |
| 1406 | .halg.base = { |
| 1407 | .cra_name = "hmac(md5)", |
| 1408 | .cra_driver_name = "omap-hmac-md5", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1409 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1410 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1411 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1412 | CRYPTO_ALG_ASYNC | |
| 1413 | CRYPTO_ALG_NEED_FALLBACK, |
| 1414 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1415 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1416 | sizeof(struct omap_sham_hmac_ctx), |
Dmitry Kasatkin | 798eed5 | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1417 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1418 | .cra_module = THIS_MODULE, |
| 1419 | .cra_init = omap_sham_cra_md5_init, |
| 1420 | .cra_exit = omap_sham_cra_exit, |
| 1421 | } |
| 1422 | } |
| 1423 | }; |
| 1424 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1425 | /* OMAP4 has some algs in addition to what OMAP2 has */ |
| 1426 | static struct ahash_alg algs_sha224_sha256[] = { |
| 1427 | { |
| 1428 | .init = omap_sham_init, |
| 1429 | .update = omap_sham_update, |
| 1430 | .final = omap_sham_final, |
| 1431 | .finup = omap_sham_finup, |
| 1432 | .digest = omap_sham_digest, |
| 1433 | .halg.digestsize = SHA224_DIGEST_SIZE, |
| 1434 | .halg.base = { |
| 1435 | .cra_name = "sha224", |
| 1436 | .cra_driver_name = "omap-sha224", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1437 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1438 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1439 | CRYPTO_ALG_ASYNC | |
| 1440 | CRYPTO_ALG_NEED_FALLBACK, |
| 1441 | .cra_blocksize = SHA224_BLOCK_SIZE, |
| 1442 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
| 1443 | .cra_alignmask = 0, |
| 1444 | .cra_module = THIS_MODULE, |
| 1445 | .cra_init = omap_sham_cra_init, |
| 1446 | .cra_exit = omap_sham_cra_exit, |
| 1447 | } |
| 1448 | }, |
| 1449 | { |
| 1450 | .init = omap_sham_init, |
| 1451 | .update = omap_sham_update, |
| 1452 | .final = omap_sham_final, |
| 1453 | .finup = omap_sham_finup, |
| 1454 | .digest = omap_sham_digest, |
| 1455 | .halg.digestsize = SHA256_DIGEST_SIZE, |
| 1456 | .halg.base = { |
| 1457 | .cra_name = "sha256", |
| 1458 | .cra_driver_name = "omap-sha256", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1459 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1460 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1461 | CRYPTO_ALG_ASYNC | |
| 1462 | CRYPTO_ALG_NEED_FALLBACK, |
| 1463 | .cra_blocksize = SHA256_BLOCK_SIZE, |
| 1464 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
| 1465 | .cra_alignmask = 0, |
| 1466 | .cra_module = THIS_MODULE, |
| 1467 | .cra_init = omap_sham_cra_init, |
| 1468 | .cra_exit = omap_sham_cra_exit, |
| 1469 | } |
| 1470 | }, |
| 1471 | { |
| 1472 | .init = omap_sham_init, |
| 1473 | .update = omap_sham_update, |
| 1474 | .final = omap_sham_final, |
| 1475 | .finup = omap_sham_finup, |
| 1476 | .digest = omap_sham_digest, |
| 1477 | .setkey = omap_sham_setkey, |
| 1478 | .halg.digestsize = SHA224_DIGEST_SIZE, |
| 1479 | .halg.base = { |
| 1480 | .cra_name = "hmac(sha224)", |
| 1481 | .cra_driver_name = "omap-hmac-sha224", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1482 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1483 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1484 | CRYPTO_ALG_ASYNC | |
| 1485 | CRYPTO_ALG_NEED_FALLBACK, |
| 1486 | .cra_blocksize = SHA224_BLOCK_SIZE, |
| 1487 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1488 | sizeof(struct omap_sham_hmac_ctx), |
| 1489 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1490 | .cra_module = THIS_MODULE, |
| 1491 | .cra_init = omap_sham_cra_sha224_init, |
| 1492 | .cra_exit = omap_sham_cra_exit, |
| 1493 | } |
| 1494 | }, |
| 1495 | { |
| 1496 | .init = omap_sham_init, |
| 1497 | .update = omap_sham_update, |
| 1498 | .final = omap_sham_final, |
| 1499 | .finup = omap_sham_finup, |
| 1500 | .digest = omap_sham_digest, |
| 1501 | .setkey = omap_sham_setkey, |
| 1502 | .halg.digestsize = SHA256_DIGEST_SIZE, |
| 1503 | .halg.base = { |
| 1504 | .cra_name = "hmac(sha256)", |
| 1505 | .cra_driver_name = "omap-hmac-sha256", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1506 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1507 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1508 | CRYPTO_ALG_ASYNC | |
| 1509 | CRYPTO_ALG_NEED_FALLBACK, |
| 1510 | .cra_blocksize = SHA256_BLOCK_SIZE, |
| 1511 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1512 | sizeof(struct omap_sham_hmac_ctx), |
| 1513 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1514 | .cra_module = THIS_MODULE, |
| 1515 | .cra_init = omap_sham_cra_sha256_init, |
| 1516 | .cra_exit = omap_sham_cra_exit, |
| 1517 | } |
| 1518 | }, |
| 1519 | }; |
| 1520 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1521 | static struct ahash_alg algs_sha384_sha512[] = { |
| 1522 | { |
| 1523 | .init = omap_sham_init, |
| 1524 | .update = omap_sham_update, |
| 1525 | .final = omap_sham_final, |
| 1526 | .finup = omap_sham_finup, |
| 1527 | .digest = omap_sham_digest, |
| 1528 | .halg.digestsize = SHA384_DIGEST_SIZE, |
| 1529 | .halg.base = { |
| 1530 | .cra_name = "sha384", |
| 1531 | .cra_driver_name = "omap-sha384", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1532 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1533 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1534 | CRYPTO_ALG_ASYNC | |
| 1535 | CRYPTO_ALG_NEED_FALLBACK, |
| 1536 | .cra_blocksize = SHA384_BLOCK_SIZE, |
| 1537 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
| 1538 | .cra_alignmask = 0, |
| 1539 | .cra_module = THIS_MODULE, |
| 1540 | .cra_init = omap_sham_cra_init, |
| 1541 | .cra_exit = omap_sham_cra_exit, |
| 1542 | } |
| 1543 | }, |
| 1544 | { |
| 1545 | .init = omap_sham_init, |
| 1546 | .update = omap_sham_update, |
| 1547 | .final = omap_sham_final, |
| 1548 | .finup = omap_sham_finup, |
| 1549 | .digest = omap_sham_digest, |
| 1550 | .halg.digestsize = SHA512_DIGEST_SIZE, |
| 1551 | .halg.base = { |
| 1552 | .cra_name = "sha512", |
| 1553 | .cra_driver_name = "omap-sha512", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1554 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1555 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1556 | CRYPTO_ALG_ASYNC | |
| 1557 | CRYPTO_ALG_NEED_FALLBACK, |
| 1558 | .cra_blocksize = SHA512_BLOCK_SIZE, |
| 1559 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
| 1560 | .cra_alignmask = 0, |
| 1561 | .cra_module = THIS_MODULE, |
| 1562 | .cra_init = omap_sham_cra_init, |
| 1563 | .cra_exit = omap_sham_cra_exit, |
| 1564 | } |
| 1565 | }, |
| 1566 | { |
| 1567 | .init = omap_sham_init, |
| 1568 | .update = omap_sham_update, |
| 1569 | .final = omap_sham_final, |
| 1570 | .finup = omap_sham_finup, |
| 1571 | .digest = omap_sham_digest, |
| 1572 | .setkey = omap_sham_setkey, |
| 1573 | .halg.digestsize = SHA384_DIGEST_SIZE, |
| 1574 | .halg.base = { |
| 1575 | .cra_name = "hmac(sha384)", |
| 1576 | .cra_driver_name = "omap-hmac-sha384", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1577 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1578 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1579 | CRYPTO_ALG_ASYNC | |
| 1580 | CRYPTO_ALG_NEED_FALLBACK, |
| 1581 | .cra_blocksize = SHA384_BLOCK_SIZE, |
| 1582 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1583 | sizeof(struct omap_sham_hmac_ctx), |
| 1584 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1585 | .cra_module = THIS_MODULE, |
| 1586 | .cra_init = omap_sham_cra_sha384_init, |
| 1587 | .cra_exit = omap_sham_cra_exit, |
| 1588 | } |
| 1589 | }, |
| 1590 | { |
| 1591 | .init = omap_sham_init, |
| 1592 | .update = omap_sham_update, |
| 1593 | .final = omap_sham_final, |
| 1594 | .finup = omap_sham_finup, |
| 1595 | .digest = omap_sham_digest, |
| 1596 | .setkey = omap_sham_setkey, |
| 1597 | .halg.digestsize = SHA512_DIGEST_SIZE, |
| 1598 | .halg.base = { |
| 1599 | .cra_name = "hmac(sha512)", |
| 1600 | .cra_driver_name = "omap-hmac-sha512", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1601 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1602 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1603 | CRYPTO_ALG_ASYNC | |
| 1604 | CRYPTO_ALG_NEED_FALLBACK, |
| 1605 | .cra_blocksize = SHA512_BLOCK_SIZE, |
| 1606 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1607 | sizeof(struct omap_sham_hmac_ctx), |
| 1608 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1609 | .cra_module = THIS_MODULE, |
| 1610 | .cra_init = omap_sham_cra_sha512_init, |
| 1611 | .cra_exit = omap_sham_cra_exit, |
| 1612 | } |
| 1613 | }, |
| 1614 | }; |
| 1615 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1616 | static void omap_sham_done_task(unsigned long data) |
| 1617 | { |
| 1618 | struct omap_sham_dev *dd = (struct omap_sham_dev *)data; |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1619 | int err = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1620 | |
Dmitry Kasatkin | 6cb3ffe | 2011-06-02 21:10:09 +0300 | [diff] [blame] | 1621 | if (!test_bit(FLAGS_BUSY, &dd->flags)) { |
| 1622 | omap_sham_handle_queue(dd, NULL); |
| 1623 | return; |
| 1624 | } |
| 1625 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1626 | if (test_bit(FLAGS_CPU, &dd->flags)) { |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1627 | if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) { |
| 1628 | /* hash or semi-hash ready */ |
| 1629 | err = omap_sham_update_cpu(dd); |
| 1630 | if (err != -EINPROGRESS) |
| 1631 | goto finish; |
| 1632 | } |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1633 | } else if (test_bit(FLAGS_DMA_READY, &dd->flags)) { |
| 1634 | if (test_and_clear_bit(FLAGS_DMA_ACTIVE, &dd->flags)) { |
| 1635 | omap_sham_update_dma_stop(dd); |
| 1636 | if (dd->err) { |
| 1637 | err = dd->err; |
| 1638 | goto finish; |
| 1639 | } |
| 1640 | } |
| 1641 | if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) { |
| 1642 | /* hash or semi-hash ready */ |
| 1643 | clear_bit(FLAGS_DMA_READY, &dd->flags); |
Dmitry Kasatkin | 887c883 | 2010-11-19 16:04:29 +0200 | [diff] [blame] | 1644 | err = omap_sham_update_dma_start(dd); |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1645 | if (err != -EINPROGRESS) |
| 1646 | goto finish; |
| 1647 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1648 | } |
| 1649 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1650 | return; |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 1651 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1652 | finish: |
| 1653 | dev_dbg(dd->dev, "update done: err: %d\n", err); |
| 1654 | /* finish curent request */ |
| 1655 | omap_sham_finish_req(dd->req, err); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1656 | } |
| 1657 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1658 | static irqreturn_t omap_sham_irq_common(struct omap_sham_dev *dd) |
| 1659 | { |
| 1660 | if (!test_bit(FLAGS_BUSY, &dd->flags)) { |
| 1661 | dev_warn(dd->dev, "Interrupt when no active requests.\n"); |
| 1662 | } else { |
| 1663 | set_bit(FLAGS_OUTPUT_READY, &dd->flags); |
| 1664 | tasklet_schedule(&dd->done_task); |
| 1665 | } |
| 1666 | |
| 1667 | return IRQ_HANDLED; |
| 1668 | } |
| 1669 | |
| 1670 | static irqreturn_t omap_sham_irq_omap2(int irq, void *dev_id) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1671 | { |
| 1672 | struct omap_sham_dev *dd = dev_id; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1673 | |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 1674 | if (unlikely(test_bit(FLAGS_FINAL, &dd->flags))) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1675 | /* final -> allow device to go to power-saving mode */ |
| 1676 | omap_sham_write_mask(dd, SHA_REG_CTRL, 0, SHA_REG_CTRL_LENGTH); |
| 1677 | |
| 1678 | omap_sham_write_mask(dd, SHA_REG_CTRL, SHA_REG_CTRL_OUTPUT_READY, |
| 1679 | SHA_REG_CTRL_OUTPUT_READY); |
| 1680 | omap_sham_read(dd, SHA_REG_CTRL); |
| 1681 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1682 | return omap_sham_irq_common(dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1683 | } |
| 1684 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1685 | static irqreturn_t omap_sham_irq_omap4(int irq, void *dev_id) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1686 | { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1687 | struct omap_sham_dev *dd = dev_id; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1688 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1689 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), 0, SHA_REG_MASK_IT_EN); |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 1690 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1691 | return omap_sham_irq_common(dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1692 | } |
| 1693 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1694 | static struct omap_sham_algs_info omap_sham_algs_info_omap2[] = { |
| 1695 | { |
| 1696 | .algs_list = algs_sha1_md5, |
| 1697 | .size = ARRAY_SIZE(algs_sha1_md5), |
| 1698 | }, |
| 1699 | }; |
| 1700 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1701 | static const struct omap_sham_pdata omap_sham_pdata_omap2 = { |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1702 | .algs_info = omap_sham_algs_info_omap2, |
| 1703 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap2), |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1704 | .flags = BIT(FLAGS_BE32_SHA1), |
| 1705 | .digest_size = SHA1_DIGEST_SIZE, |
| 1706 | .copy_hash = omap_sham_copy_hash_omap2, |
| 1707 | .write_ctrl = omap_sham_write_ctrl_omap2, |
| 1708 | .trigger = omap_sham_trigger_omap2, |
| 1709 | .poll_irq = omap_sham_poll_irq_omap2, |
| 1710 | .intr_hdlr = omap_sham_irq_omap2, |
| 1711 | .idigest_ofs = 0x00, |
| 1712 | .din_ofs = 0x1c, |
| 1713 | .digcnt_ofs = 0x14, |
| 1714 | .rev_ofs = 0x5c, |
| 1715 | .mask_ofs = 0x60, |
| 1716 | .sysstatus_ofs = 0x64, |
| 1717 | .major_mask = 0xf0, |
| 1718 | .major_shift = 4, |
| 1719 | .minor_mask = 0x0f, |
| 1720 | .minor_shift = 0, |
| 1721 | }; |
| 1722 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1723 | #ifdef CONFIG_OF |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1724 | static struct omap_sham_algs_info omap_sham_algs_info_omap4[] = { |
| 1725 | { |
| 1726 | .algs_list = algs_sha1_md5, |
| 1727 | .size = ARRAY_SIZE(algs_sha1_md5), |
| 1728 | }, |
| 1729 | { |
| 1730 | .algs_list = algs_sha224_sha256, |
| 1731 | .size = ARRAY_SIZE(algs_sha224_sha256), |
| 1732 | }, |
| 1733 | }; |
| 1734 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1735 | static const struct omap_sham_pdata omap_sham_pdata_omap4 = { |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1736 | .algs_info = omap_sham_algs_info_omap4, |
| 1737 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap4), |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1738 | .flags = BIT(FLAGS_AUTO_XOR), |
| 1739 | .digest_size = SHA256_DIGEST_SIZE, |
| 1740 | .copy_hash = omap_sham_copy_hash_omap4, |
| 1741 | .write_ctrl = omap_sham_write_ctrl_omap4, |
| 1742 | .trigger = omap_sham_trigger_omap4, |
| 1743 | .poll_irq = omap_sham_poll_irq_omap4, |
| 1744 | .intr_hdlr = omap_sham_irq_omap4, |
| 1745 | .idigest_ofs = 0x020, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1746 | .odigest_ofs = 0x0, |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1747 | .din_ofs = 0x080, |
| 1748 | .digcnt_ofs = 0x040, |
| 1749 | .rev_ofs = 0x100, |
| 1750 | .mask_ofs = 0x110, |
| 1751 | .sysstatus_ofs = 0x114, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1752 | .mode_ofs = 0x44, |
| 1753 | .length_ofs = 0x48, |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1754 | .major_mask = 0x0700, |
| 1755 | .major_shift = 8, |
| 1756 | .minor_mask = 0x003f, |
| 1757 | .minor_shift = 0, |
| 1758 | }; |
| 1759 | |
Lokesh Vutla | 7d7c704 | 2013-07-26 12:29:15 +0530 | [diff] [blame] | 1760 | static struct omap_sham_algs_info omap_sham_algs_info_omap5[] = { |
| 1761 | { |
| 1762 | .algs_list = algs_sha1_md5, |
| 1763 | .size = ARRAY_SIZE(algs_sha1_md5), |
| 1764 | }, |
| 1765 | { |
| 1766 | .algs_list = algs_sha224_sha256, |
| 1767 | .size = ARRAY_SIZE(algs_sha224_sha256), |
| 1768 | }, |
| 1769 | { |
| 1770 | .algs_list = algs_sha384_sha512, |
| 1771 | .size = ARRAY_SIZE(algs_sha384_sha512), |
| 1772 | }, |
| 1773 | }; |
| 1774 | |
| 1775 | static const struct omap_sham_pdata omap_sham_pdata_omap5 = { |
| 1776 | .algs_info = omap_sham_algs_info_omap5, |
| 1777 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap5), |
| 1778 | .flags = BIT(FLAGS_AUTO_XOR), |
| 1779 | .digest_size = SHA512_DIGEST_SIZE, |
| 1780 | .copy_hash = omap_sham_copy_hash_omap4, |
| 1781 | .write_ctrl = omap_sham_write_ctrl_omap4, |
| 1782 | .trigger = omap_sham_trigger_omap4, |
| 1783 | .poll_irq = omap_sham_poll_irq_omap4, |
| 1784 | .intr_hdlr = omap_sham_irq_omap4, |
| 1785 | .idigest_ofs = 0x240, |
| 1786 | .odigest_ofs = 0x200, |
| 1787 | .din_ofs = 0x080, |
| 1788 | .digcnt_ofs = 0x280, |
| 1789 | .rev_ofs = 0x100, |
| 1790 | .mask_ofs = 0x110, |
| 1791 | .sysstatus_ofs = 0x114, |
| 1792 | .mode_ofs = 0x284, |
| 1793 | .length_ofs = 0x288, |
| 1794 | .major_mask = 0x0700, |
| 1795 | .major_shift = 8, |
| 1796 | .minor_mask = 0x003f, |
| 1797 | .minor_shift = 0, |
| 1798 | }; |
| 1799 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1800 | static const struct of_device_id omap_sham_of_match[] = { |
| 1801 | { |
| 1802 | .compatible = "ti,omap2-sham", |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1803 | .data = &omap_sham_pdata_omap2, |
| 1804 | }, |
| 1805 | { |
Pali Rohár | eddca85 | 2015-02-26 14:49:53 +0100 | [diff] [blame] | 1806 | .compatible = "ti,omap3-sham", |
| 1807 | .data = &omap_sham_pdata_omap2, |
| 1808 | }, |
| 1809 | { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1810 | .compatible = "ti,omap4-sham", |
| 1811 | .data = &omap_sham_pdata_omap4, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1812 | }, |
Lokesh Vutla | 7d7c704 | 2013-07-26 12:29:15 +0530 | [diff] [blame] | 1813 | { |
| 1814 | .compatible = "ti,omap5-sham", |
| 1815 | .data = &omap_sham_pdata_omap5, |
| 1816 | }, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1817 | {}, |
| 1818 | }; |
| 1819 | MODULE_DEVICE_TABLE(of, omap_sham_of_match); |
| 1820 | |
| 1821 | static int omap_sham_get_res_of(struct omap_sham_dev *dd, |
| 1822 | struct device *dev, struct resource *res) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1823 | { |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1824 | struct device_node *node = dev->of_node; |
| 1825 | const struct of_device_id *match; |
| 1826 | int err = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1827 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1828 | match = of_match_device(of_match_ptr(omap_sham_of_match), dev); |
| 1829 | if (!match) { |
| 1830 | dev_err(dev, "no compatible OF match\n"); |
| 1831 | err = -EINVAL; |
| 1832 | goto err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1833 | } |
Samu Onkalo | 584db6a | 2010-09-03 19:20:19 +0800 | [diff] [blame] | 1834 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1835 | err = of_address_to_resource(node, 0, res); |
| 1836 | if (err < 0) { |
| 1837 | dev_err(dev, "can't translate OF node address\n"); |
| 1838 | err = -EINVAL; |
| 1839 | goto err; |
| 1840 | } |
| 1841 | |
Thierry Reding | f757849 | 2013-09-18 15:24:44 +0200 | [diff] [blame] | 1842 | dd->irq = irq_of_parse_and_map(node, 0); |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1843 | if (!dd->irq) { |
| 1844 | dev_err(dev, "can't translate OF irq value\n"); |
| 1845 | err = -EINVAL; |
| 1846 | goto err; |
| 1847 | } |
| 1848 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1849 | dd->pdata = match->data; |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1850 | |
| 1851 | err: |
| 1852 | return err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1853 | } |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1854 | #else |
Mark A. Greer | c3c3b32 | 2013-01-15 13:53:02 -0700 | [diff] [blame] | 1855 | static const struct of_device_id omap_sham_of_match[] = { |
| 1856 | {}, |
| 1857 | }; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1858 | |
Mark A. Greer | c3c3b32 | 2013-01-15 13:53:02 -0700 | [diff] [blame] | 1859 | static int omap_sham_get_res_of(struct omap_sham_dev *dd, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1860 | struct device *dev, struct resource *res) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1861 | { |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1862 | return -EINVAL; |
| 1863 | } |
| 1864 | #endif |
| 1865 | |
| 1866 | static int omap_sham_get_res_pdev(struct omap_sham_dev *dd, |
| 1867 | struct platform_device *pdev, struct resource *res) |
| 1868 | { |
| 1869 | struct device *dev = &pdev->dev; |
| 1870 | struct resource *r; |
| 1871 | int err = 0; |
| 1872 | |
| 1873 | /* Get the base address */ |
| 1874 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1875 | if (!r) { |
| 1876 | dev_err(dev, "no MEM resource info\n"); |
| 1877 | err = -ENODEV; |
| 1878 | goto err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1879 | } |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1880 | memcpy(res, r, sizeof(*res)); |
| 1881 | |
| 1882 | /* Get the IRQ */ |
| 1883 | dd->irq = platform_get_irq(pdev, 0); |
| 1884 | if (dd->irq < 0) { |
| 1885 | dev_err(dev, "no IRQ resource info\n"); |
| 1886 | err = dd->irq; |
| 1887 | goto err; |
| 1888 | } |
| 1889 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1890 | /* Only OMAP2/3 can be non-DT */ |
| 1891 | dd->pdata = &omap_sham_pdata_omap2; |
| 1892 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1893 | err: |
| 1894 | return err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1895 | } |
| 1896 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 1897 | static int omap_sham_probe(struct platform_device *pdev) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1898 | { |
| 1899 | struct omap_sham_dev *dd; |
| 1900 | struct device *dev = &pdev->dev; |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1901 | struct resource res; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 1902 | dma_cap_mask_t mask; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1903 | int err, i, j; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1904 | u32 rev; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1905 | |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 1906 | dd = devm_kzalloc(dev, sizeof(struct omap_sham_dev), GFP_KERNEL); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1907 | if (dd == NULL) { |
| 1908 | dev_err(dev, "unable to alloc data struct.\n"); |
| 1909 | err = -ENOMEM; |
| 1910 | goto data_err; |
| 1911 | } |
| 1912 | dd->dev = dev; |
| 1913 | platform_set_drvdata(pdev, dd); |
| 1914 | |
| 1915 | INIT_LIST_HEAD(&dd->list); |
| 1916 | spin_lock_init(&dd->lock); |
| 1917 | tasklet_init(&dd->done_task, omap_sham_done_task, (unsigned long)dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1918 | crypto_init_queue(&dd->queue, OMAP_SHAM_QUEUE_LENGTH); |
| 1919 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1920 | err = (dev->of_node) ? omap_sham_get_res_of(dd, dev, &res) : |
| 1921 | omap_sham_get_res_pdev(dd, pdev, &res); |
| 1922 | if (err) |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 1923 | goto data_err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1924 | |
Laurent Navet | 3086228 | 2013-05-02 14:00:38 +0200 | [diff] [blame] | 1925 | dd->io_base = devm_ioremap_resource(dev, &res); |
| 1926 | if (IS_ERR(dd->io_base)) { |
| 1927 | err = PTR_ERR(dd->io_base); |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 1928 | goto data_err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1929 | } |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1930 | dd->phys_base = res.start; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1931 | |
Lokesh Vutla | 0de9c38 | 2013-07-26 12:29:16 +0530 | [diff] [blame] | 1932 | err = devm_request_irq(dev, dd->irq, dd->pdata->intr_hdlr, |
| 1933 | IRQF_TRIGGER_NONE, dev_name(dev), dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1934 | if (err) { |
Lokesh Vutla | 0de9c38 | 2013-07-26 12:29:16 +0530 | [diff] [blame] | 1935 | dev_err(dev, "unable to request irq %d, err = %d\n", |
| 1936 | dd->irq, err); |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 1937 | goto data_err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1938 | } |
| 1939 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 1940 | dma_cap_zero(mask); |
| 1941 | dma_cap_set(DMA_SLAVE, mask); |
| 1942 | |
Peter Ujfalusi | dbe2462 | 2016-04-29 16:03:41 +0300 | [diff] [blame] | 1943 | dd->dma_lch = dma_request_chan(dev, "rx"); |
| 1944 | if (IS_ERR(dd->dma_lch)) { |
| 1945 | err = PTR_ERR(dd->dma_lch); |
| 1946 | if (err == -EPROBE_DEFER) |
| 1947 | goto data_err; |
| 1948 | |
Lokesh Vutla | b8411cc | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1949 | dd->polling_mode = 1; |
| 1950 | dev_dbg(dev, "using polling mode instead of dma\n"); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1951 | } |
| 1952 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1953 | dd->flags |= dd->pdata->flags; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1954 | |
Tero Kristo | e93f767 | 2016-06-22 16:23:34 +0300 | [diff] [blame] | 1955 | pm_runtime_use_autosuspend(dev); |
| 1956 | pm_runtime_set_autosuspend_delay(dev, DEFAULT_AUTOSUSPEND_DELAY); |
| 1957 | |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 1958 | pm_runtime_enable(dev); |
Vutla, Lokesh | b0a3d89 | 2015-03-31 09:52:24 +0530 | [diff] [blame] | 1959 | pm_runtime_irq_safe(dev); |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 1960 | |
| 1961 | err = pm_runtime_get_sync(dev); |
| 1962 | if (err < 0) { |
| 1963 | dev_err(dev, "failed to get sync: %d\n", err); |
| 1964 | goto err_pm; |
| 1965 | } |
| 1966 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1967 | rev = omap_sham_read(dd, SHA_REG_REV(dd)); |
| 1968 | pm_runtime_put_sync(&pdev->dev); |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 1969 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1970 | dev_info(dev, "hw accel on OMAP rev %u.%u\n", |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1971 | (rev & dd->pdata->major_mask) >> dd->pdata->major_shift, |
| 1972 | (rev & dd->pdata->minor_mask) >> dd->pdata->minor_shift); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1973 | |
| 1974 | spin_lock(&sham.lock); |
| 1975 | list_add_tail(&dd->list, &sham.dev_list); |
| 1976 | spin_unlock(&sham.lock); |
| 1977 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1978 | for (i = 0; i < dd->pdata->algs_info_size; i++) { |
| 1979 | for (j = 0; j < dd->pdata->algs_info[i].size; j++) { |
| 1980 | err = crypto_register_ahash( |
| 1981 | &dd->pdata->algs_info[i].algs_list[j]); |
| 1982 | if (err) |
| 1983 | goto err_algs; |
| 1984 | |
| 1985 | dd->pdata->algs_info[i].registered++; |
| 1986 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1987 | } |
| 1988 | |
| 1989 | return 0; |
| 1990 | |
| 1991 | err_algs: |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1992 | for (i = dd->pdata->algs_info_size - 1; i >= 0; i--) |
| 1993 | for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) |
| 1994 | crypto_unregister_ahash( |
| 1995 | &dd->pdata->algs_info[i].algs_list[j]); |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 1996 | err_pm: |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 1997 | pm_runtime_disable(dev); |
Dan Carpenter | d462e32 | 2016-05-18 13:39:05 +0300 | [diff] [blame] | 1998 | if (!dd->polling_mode) |
Mark A. Greer | f13ab86 | 2013-11-12 13:12:27 -0700 | [diff] [blame] | 1999 | dma_release_channel(dd->dma_lch); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2000 | data_err: |
| 2001 | dev_err(dev, "initialization failed.\n"); |
| 2002 | |
| 2003 | return err; |
| 2004 | } |
| 2005 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2006 | static int omap_sham_remove(struct platform_device *pdev) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2007 | { |
| 2008 | static struct omap_sham_dev *dd; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2009 | int i, j; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2010 | |
| 2011 | dd = platform_get_drvdata(pdev); |
| 2012 | if (!dd) |
| 2013 | return -ENODEV; |
| 2014 | spin_lock(&sham.lock); |
| 2015 | list_del(&dd->list); |
| 2016 | spin_unlock(&sham.lock); |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2017 | for (i = dd->pdata->algs_info_size - 1; i >= 0; i--) |
| 2018 | for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) |
| 2019 | crypto_unregister_ahash( |
| 2020 | &dd->pdata->algs_info[i].algs_list[j]); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2021 | tasklet_kill(&dd->done_task); |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 2022 | pm_runtime_disable(&pdev->dev); |
Mark A. Greer | f13ab86 | 2013-11-12 13:12:27 -0700 | [diff] [blame] | 2023 | |
Peter Ujfalusi | dbe2462 | 2016-04-29 16:03:41 +0300 | [diff] [blame] | 2024 | if (!dd->polling_mode) |
Mark A. Greer | f13ab86 | 2013-11-12 13:12:27 -0700 | [diff] [blame] | 2025 | dma_release_channel(dd->dma_lch); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2026 | |
| 2027 | return 0; |
| 2028 | } |
| 2029 | |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2030 | #ifdef CONFIG_PM_SLEEP |
| 2031 | static int omap_sham_suspend(struct device *dev) |
| 2032 | { |
| 2033 | pm_runtime_put_sync(dev); |
| 2034 | return 0; |
| 2035 | } |
| 2036 | |
| 2037 | static int omap_sham_resume(struct device *dev) |
| 2038 | { |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 2039 | int err = pm_runtime_get_sync(dev); |
| 2040 | if (err < 0) { |
| 2041 | dev_err(dev, "failed to get sync: %d\n", err); |
| 2042 | return err; |
| 2043 | } |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2044 | return 0; |
| 2045 | } |
| 2046 | #endif |
| 2047 | |
Jingoo Han | ae12fe2 | 2014-02-27 20:33:32 +0900 | [diff] [blame] | 2048 | static SIMPLE_DEV_PM_OPS(omap_sham_pm_ops, omap_sham_suspend, omap_sham_resume); |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2049 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2050 | static struct platform_driver omap_sham_driver = { |
| 2051 | .probe = omap_sham_probe, |
| 2052 | .remove = omap_sham_remove, |
| 2053 | .driver = { |
| 2054 | .name = "omap-sham", |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2055 | .pm = &omap_sham_pm_ops, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 2056 | .of_match_table = omap_sham_of_match, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2057 | }, |
| 2058 | }; |
| 2059 | |
Sachin Kamat | 0261370 | 2013-03-04 15:09:43 +0530 | [diff] [blame] | 2060 | module_platform_driver(omap_sham_driver); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2061 | |
| 2062 | MODULE_DESCRIPTION("OMAP SHA1/MD5 hw acceleration support."); |
| 2063 | MODULE_LICENSE("GPL v2"); |
| 2064 | MODULE_AUTHOR("Dmitry Kasatkin"); |
Joni Lapilainen | 718249d | 2013-10-26 23:00:41 +0200 | [diff] [blame] | 2065 | MODULE_ALIAS("platform:omap-sham"); |