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 |
Tero Kristo | f19de1b | 2016-09-19 18:22:15 +0300 | [diff] [blame] | 115 | #define FLAGS_SGS_COPIED 9 |
| 116 | #define FLAGS_SGS_ALLOCED 10 |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 117 | /* context flags */ |
| 118 | #define FLAGS_FINUP 16 |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 119 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 120 | #define FLAGS_MODE_SHIFT 18 |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 121 | #define FLAGS_MODE_MASK (SHA_REG_MODE_ALGO_MASK << FLAGS_MODE_SHIFT) |
| 122 | #define FLAGS_MODE_MD5 (SHA_REG_MODE_ALGO_MD5_128 << FLAGS_MODE_SHIFT) |
| 123 | #define FLAGS_MODE_SHA1 (SHA_REG_MODE_ALGO_SHA1_160 << FLAGS_MODE_SHIFT) |
| 124 | #define FLAGS_MODE_SHA224 (SHA_REG_MODE_ALGO_SHA2_224 << FLAGS_MODE_SHIFT) |
| 125 | #define FLAGS_MODE_SHA256 (SHA_REG_MODE_ALGO_SHA2_256 << FLAGS_MODE_SHIFT) |
| 126 | #define FLAGS_MODE_SHA384 (SHA_REG_MODE_ALGO_SHA2_384 << FLAGS_MODE_SHIFT) |
| 127 | #define FLAGS_MODE_SHA512 (SHA_REG_MODE_ALGO_SHA2_512 << FLAGS_MODE_SHIFT) |
| 128 | |
| 129 | #define FLAGS_HMAC 21 |
| 130 | #define FLAGS_ERROR 22 |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 131 | |
| 132 | #define OP_UPDATE 1 |
| 133 | #define OP_FINAL 2 |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 134 | |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 135 | #define OMAP_ALIGN_MASK (sizeof(u32)-1) |
| 136 | #define OMAP_ALIGNED __attribute__((aligned(sizeof(u32)))) |
| 137 | |
Tero Kristo | 182e283 | 2016-09-19 18:22:19 +0300 | [diff] [blame] | 138 | #define BUFLEN SHA512_BLOCK_SIZE |
Tero Kristo | 2c5bd1e | 2016-09-19 18:22:16 +0300 | [diff] [blame] | 139 | #define OMAP_SHA_DMA_THRESHOLD 256 |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 140 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 141 | struct omap_sham_dev; |
| 142 | |
| 143 | struct omap_sham_reqctx { |
| 144 | struct omap_sham_dev *dd; |
| 145 | unsigned long flags; |
| 146 | unsigned long op; |
| 147 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 148 | u8 digest[SHA512_DIGEST_SIZE] OMAP_ALIGNED; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 149 | size_t digcnt; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 150 | size_t bufcnt; |
| 151 | size_t buflen; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 152 | |
| 153 | /* walk state */ |
| 154 | struct scatterlist *sg; |
Tero Kristo | f19de1b | 2016-09-19 18:22:15 +0300 | [diff] [blame] | 155 | struct scatterlist sgl[2]; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 156 | int offset; /* offset in current sg */ |
Tero Kristo | f19de1b | 2016-09-19 18:22:15 +0300 | [diff] [blame] | 157 | int sg_len; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 158 | unsigned int total; /* total request */ |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 159 | |
| 160 | u8 buffer[0] OMAP_ALIGNED; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 161 | }; |
| 162 | |
| 163 | struct omap_sham_hmac_ctx { |
| 164 | struct crypto_shash *shash; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 165 | u8 ipad[SHA512_BLOCK_SIZE] OMAP_ALIGNED; |
| 166 | u8 opad[SHA512_BLOCK_SIZE] OMAP_ALIGNED; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 167 | }; |
| 168 | |
| 169 | struct omap_sham_ctx { |
| 170 | struct omap_sham_dev *dd; |
| 171 | |
| 172 | unsigned long flags; |
| 173 | |
| 174 | /* fallback stuff */ |
| 175 | struct crypto_shash *fallback; |
| 176 | |
| 177 | struct omap_sham_hmac_ctx base[0]; |
| 178 | }; |
| 179 | |
Tero Kristo | 65e7a54 | 2016-06-22 16:23:35 +0300 | [diff] [blame] | 180 | #define OMAP_SHAM_QUEUE_LENGTH 10 |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 181 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 182 | struct omap_sham_algs_info { |
| 183 | struct ahash_alg *algs_list; |
| 184 | unsigned int size; |
| 185 | unsigned int registered; |
| 186 | }; |
| 187 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 188 | struct omap_sham_pdata { |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 189 | struct omap_sham_algs_info *algs_info; |
| 190 | unsigned int algs_info_size; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 191 | unsigned long flags; |
| 192 | int digest_size; |
| 193 | |
| 194 | void (*copy_hash)(struct ahash_request *req, int out); |
| 195 | void (*write_ctrl)(struct omap_sham_dev *dd, size_t length, |
| 196 | int final, int dma); |
| 197 | void (*trigger)(struct omap_sham_dev *dd, size_t length); |
| 198 | int (*poll_irq)(struct omap_sham_dev *dd); |
| 199 | irqreturn_t (*intr_hdlr)(int irq, void *dev_id); |
| 200 | |
| 201 | u32 odigest_ofs; |
| 202 | u32 idigest_ofs; |
| 203 | u32 din_ofs; |
| 204 | u32 digcnt_ofs; |
| 205 | u32 rev_ofs; |
| 206 | u32 mask_ofs; |
| 207 | u32 sysstatus_ofs; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 208 | u32 mode_ofs; |
| 209 | u32 length_ofs; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 210 | |
| 211 | u32 major_mask; |
| 212 | u32 major_shift; |
| 213 | u32 minor_mask; |
| 214 | u32 minor_shift; |
| 215 | }; |
| 216 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 217 | struct omap_sham_dev { |
| 218 | struct list_head list; |
| 219 | unsigned long phys_base; |
| 220 | struct device *dev; |
| 221 | void __iomem *io_base; |
| 222 | int irq; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 223 | spinlock_t lock; |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 224 | int err; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 225 | struct dma_chan *dma_lch; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 226 | struct tasklet_struct done_task; |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 227 | u8 polling_mode; |
Tero Kristo | f19de1b | 2016-09-19 18:22:15 +0300 | [diff] [blame] | 228 | u8 xmit_buf[BUFLEN]; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 229 | |
| 230 | unsigned long flags; |
| 231 | struct crypto_queue queue; |
| 232 | struct ahash_request *req; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 233 | |
| 234 | const struct omap_sham_pdata *pdata; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 235 | }; |
| 236 | |
| 237 | struct omap_sham_drv { |
| 238 | struct list_head dev_list; |
| 239 | spinlock_t lock; |
| 240 | unsigned long flags; |
| 241 | }; |
| 242 | |
| 243 | static struct omap_sham_drv sham = { |
| 244 | .dev_list = LIST_HEAD_INIT(sham.dev_list), |
| 245 | .lock = __SPIN_LOCK_UNLOCKED(sham.lock), |
| 246 | }; |
| 247 | |
| 248 | static inline u32 omap_sham_read(struct omap_sham_dev *dd, u32 offset) |
| 249 | { |
| 250 | return __raw_readl(dd->io_base + offset); |
| 251 | } |
| 252 | |
| 253 | static inline void omap_sham_write(struct omap_sham_dev *dd, |
| 254 | u32 offset, u32 value) |
| 255 | { |
| 256 | __raw_writel(value, dd->io_base + offset); |
| 257 | } |
| 258 | |
| 259 | static inline void omap_sham_write_mask(struct omap_sham_dev *dd, u32 address, |
| 260 | u32 value, u32 mask) |
| 261 | { |
| 262 | u32 val; |
| 263 | |
| 264 | val = omap_sham_read(dd, address); |
| 265 | val &= ~mask; |
| 266 | val |= value; |
| 267 | omap_sham_write(dd, address, val); |
| 268 | } |
| 269 | |
| 270 | static inline int omap_sham_wait(struct omap_sham_dev *dd, u32 offset, u32 bit) |
| 271 | { |
| 272 | unsigned long timeout = jiffies + DEFAULT_TIMEOUT_INTERVAL; |
| 273 | |
| 274 | while (!(omap_sham_read(dd, offset) & bit)) { |
| 275 | if (time_is_before_jiffies(timeout)) |
| 276 | return -ETIMEDOUT; |
| 277 | } |
| 278 | |
| 279 | return 0; |
| 280 | } |
| 281 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 282 | 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] | 283 | { |
| 284 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 285 | struct omap_sham_dev *dd = ctx->dd; |
Dmitry Kasatkin | 0c3cf4c | 2010-11-19 16:04:22 +0200 | [diff] [blame] | 286 | u32 *hash = (u32 *)ctx->digest; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 287 | int i; |
| 288 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 289 | for (i = 0; i < dd->pdata->digest_size / sizeof(u32); i++) { |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 290 | if (out) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 291 | hash[i] = omap_sham_read(dd, SHA_REG_IDIGEST(dd, i)); |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 292 | else |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 293 | omap_sham_write(dd, SHA_REG_IDIGEST(dd, i), hash[i]); |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 294 | } |
| 295 | } |
| 296 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 297 | static void omap_sham_copy_hash_omap4(struct ahash_request *req, int out) |
| 298 | { |
| 299 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 300 | struct omap_sham_dev *dd = ctx->dd; |
| 301 | int i; |
| 302 | |
| 303 | if (ctx->flags & BIT(FLAGS_HMAC)) { |
| 304 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(dd->req); |
| 305 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 306 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 307 | u32 *opad = (u32 *)bctx->opad; |
| 308 | |
| 309 | for (i = 0; i < dd->pdata->digest_size / sizeof(u32); i++) { |
| 310 | if (out) |
| 311 | opad[i] = omap_sham_read(dd, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 312 | SHA_REG_ODIGEST(dd, i)); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 313 | else |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 314 | omap_sham_write(dd, SHA_REG_ODIGEST(dd, i), |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 315 | opad[i]); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | omap_sham_copy_hash_omap2(req, out); |
| 320 | } |
| 321 | |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 322 | static void omap_sham_copy_ready_hash(struct ahash_request *req) |
| 323 | { |
| 324 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 325 | u32 *in = (u32 *)ctx->digest; |
| 326 | u32 *hash = (u32 *)req->result; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 327 | int i, d, big_endian = 0; |
Dmitry Kasatkin | 3c8d758 | 2010-11-19 16:04:27 +0200 | [diff] [blame] | 328 | |
| 329 | if (!hash) |
| 330 | return; |
| 331 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 332 | switch (ctx->flags & FLAGS_MODE_MASK) { |
| 333 | case FLAGS_MODE_MD5: |
| 334 | d = MD5_DIGEST_SIZE / sizeof(u32); |
| 335 | break; |
| 336 | case FLAGS_MODE_SHA1: |
| 337 | /* OMAP2 SHA1 is big endian */ |
| 338 | if (test_bit(FLAGS_BE32_SHA1, &ctx->dd->flags)) |
| 339 | big_endian = 1; |
| 340 | d = SHA1_DIGEST_SIZE / sizeof(u32); |
| 341 | break; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 342 | case FLAGS_MODE_SHA224: |
| 343 | d = SHA224_DIGEST_SIZE / sizeof(u32); |
| 344 | break; |
| 345 | case FLAGS_MODE_SHA256: |
| 346 | d = SHA256_DIGEST_SIZE / sizeof(u32); |
| 347 | break; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 348 | case FLAGS_MODE_SHA384: |
| 349 | d = SHA384_DIGEST_SIZE / sizeof(u32); |
| 350 | break; |
| 351 | case FLAGS_MODE_SHA512: |
| 352 | d = SHA512_DIGEST_SIZE / sizeof(u32); |
| 353 | break; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 354 | default: |
| 355 | d = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 356 | } |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 357 | |
| 358 | if (big_endian) |
| 359 | for (i = 0; i < d; i++) |
| 360 | hash[i] = be32_to_cpu(in[i]); |
| 361 | else |
| 362 | for (i = 0; i < d; i++) |
| 363 | hash[i] = le32_to_cpu(in[i]); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 364 | } |
| 365 | |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 366 | static int omap_sham_hw_init(struct omap_sham_dev *dd) |
| 367 | { |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 368 | int err; |
| 369 | |
| 370 | err = pm_runtime_get_sync(dd->dev); |
| 371 | if (err < 0) { |
| 372 | dev_err(dd->dev, "failed to get sync: %d\n", err); |
| 373 | return err; |
| 374 | } |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 375 | |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 376 | if (!test_bit(FLAGS_INIT, &dd->flags)) { |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 377 | set_bit(FLAGS_INIT, &dd->flags); |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 378 | dd->err = 0; |
| 379 | } |
| 380 | |
| 381 | return 0; |
| 382 | } |
| 383 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 384 | 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] | 385 | int final, int dma) |
| 386 | { |
| 387 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 388 | u32 val = length << 5, mask; |
| 389 | |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 390 | if (likely(ctx->digcnt)) |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 391 | omap_sham_write(dd, SHA_REG_DIGCNT(dd), ctx->digcnt); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 392 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 393 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 394 | SHA_REG_MASK_IT_EN | (dma ? SHA_REG_MASK_DMA_EN : 0), |
| 395 | SHA_REG_MASK_IT_EN | SHA_REG_MASK_DMA_EN); |
| 396 | /* |
| 397 | * Setting ALGO_CONST only for the first iteration |
| 398 | * and CLOSE_HASH only for the last one. |
| 399 | */ |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 400 | if ((ctx->flags & FLAGS_MODE_MASK) == FLAGS_MODE_SHA1) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 401 | val |= SHA_REG_CTRL_ALGO; |
| 402 | if (!ctx->digcnt) |
| 403 | val |= SHA_REG_CTRL_ALGO_CONST; |
| 404 | if (final) |
| 405 | val |= SHA_REG_CTRL_CLOSE_HASH; |
| 406 | |
| 407 | mask = SHA_REG_CTRL_ALGO_CONST | SHA_REG_CTRL_CLOSE_HASH | |
| 408 | SHA_REG_CTRL_ALGO | SHA_REG_CTRL_LENGTH; |
| 409 | |
| 410 | omap_sham_write_mask(dd, SHA_REG_CTRL, val, mask); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 411 | } |
| 412 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 413 | static void omap_sham_trigger_omap2(struct omap_sham_dev *dd, size_t length) |
| 414 | { |
| 415 | } |
| 416 | |
| 417 | static int omap_sham_poll_irq_omap2(struct omap_sham_dev *dd) |
| 418 | { |
| 419 | return omap_sham_wait(dd, SHA_REG_CTRL, SHA_REG_CTRL_INPUT_READY); |
| 420 | } |
| 421 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 422 | static int get_block_size(struct omap_sham_reqctx *ctx) |
| 423 | { |
| 424 | int d; |
| 425 | |
| 426 | switch (ctx->flags & FLAGS_MODE_MASK) { |
| 427 | case FLAGS_MODE_MD5: |
| 428 | case FLAGS_MODE_SHA1: |
| 429 | d = SHA1_BLOCK_SIZE; |
| 430 | break; |
| 431 | case FLAGS_MODE_SHA224: |
| 432 | case FLAGS_MODE_SHA256: |
| 433 | d = SHA256_BLOCK_SIZE; |
| 434 | break; |
| 435 | case FLAGS_MODE_SHA384: |
| 436 | case FLAGS_MODE_SHA512: |
| 437 | d = SHA512_BLOCK_SIZE; |
| 438 | break; |
| 439 | default: |
| 440 | d = 0; |
| 441 | } |
| 442 | |
| 443 | return d; |
| 444 | } |
| 445 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 446 | static void omap_sham_write_n(struct omap_sham_dev *dd, u32 offset, |
| 447 | u32 *value, int count) |
| 448 | { |
| 449 | for (; count--; value++, offset += 4) |
| 450 | omap_sham_write(dd, offset, *value); |
| 451 | } |
| 452 | |
| 453 | static void omap_sham_write_ctrl_omap4(struct omap_sham_dev *dd, size_t length, |
| 454 | int final, int dma) |
| 455 | { |
| 456 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 457 | u32 val, mask; |
| 458 | |
| 459 | /* |
| 460 | * Setting ALGO_CONST only for the first iteration and |
| 461 | * CLOSE_HASH only for the last one. Note that flags mode bits |
| 462 | * correspond to algorithm encoding in mode register. |
| 463 | */ |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 464 | val = (ctx->flags & FLAGS_MODE_MASK) >> (FLAGS_MODE_SHIFT); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 465 | if (!ctx->digcnt) { |
| 466 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(dd->req); |
| 467 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 468 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 469 | int bs, nr_dr; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 470 | |
| 471 | val |= SHA_REG_MODE_ALGO_CONSTANT; |
| 472 | |
| 473 | if (ctx->flags & BIT(FLAGS_HMAC)) { |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 474 | bs = get_block_size(ctx); |
| 475 | nr_dr = bs / (2 * sizeof(u32)); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 476 | val |= SHA_REG_MODE_HMAC_KEY_PROC; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 477 | omap_sham_write_n(dd, SHA_REG_ODIGEST(dd, 0), |
| 478 | (u32 *)bctx->ipad, nr_dr); |
| 479 | omap_sham_write_n(dd, SHA_REG_IDIGEST(dd, 0), |
| 480 | (u32 *)bctx->ipad + nr_dr, nr_dr); |
| 481 | ctx->digcnt += bs; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 482 | } |
| 483 | } |
| 484 | |
| 485 | if (final) { |
| 486 | val |= SHA_REG_MODE_CLOSE_HASH; |
| 487 | |
| 488 | if (ctx->flags & BIT(FLAGS_HMAC)) |
| 489 | val |= SHA_REG_MODE_HMAC_OUTER_HASH; |
| 490 | } |
| 491 | |
| 492 | mask = SHA_REG_MODE_ALGO_CONSTANT | SHA_REG_MODE_CLOSE_HASH | |
| 493 | SHA_REG_MODE_ALGO_MASK | SHA_REG_MODE_HMAC_OUTER_HASH | |
| 494 | SHA_REG_MODE_HMAC_KEY_PROC; |
| 495 | |
| 496 | dev_dbg(dd->dev, "ctrl: %08x, flags: %08lx\n", val, ctx->flags); |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 497 | omap_sham_write_mask(dd, SHA_REG_MODE(dd), val, mask); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 498 | omap_sham_write(dd, SHA_REG_IRQENA, SHA_REG_IRQENA_OUTPUT_RDY); |
| 499 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), |
| 500 | SHA_REG_MASK_IT_EN | |
| 501 | (dma ? SHA_REG_MASK_DMA_EN : 0), |
| 502 | SHA_REG_MASK_IT_EN | SHA_REG_MASK_DMA_EN); |
| 503 | } |
| 504 | |
| 505 | static void omap_sham_trigger_omap4(struct omap_sham_dev *dd, size_t length) |
| 506 | { |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 507 | omap_sham_write(dd, SHA_REG_LENGTH(dd), length); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | static int omap_sham_poll_irq_omap4(struct omap_sham_dev *dd) |
| 511 | { |
| 512 | return omap_sham_wait(dd, SHA_REG_IRQSTATUS, |
| 513 | SHA_REG_IRQSTATUS_INPUT_RDY); |
| 514 | } |
| 515 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 516 | static int omap_sham_xmit_cpu(struct omap_sham_dev *dd, size_t length, |
| 517 | int final) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 518 | { |
| 519 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 520 | int count, len32, bs32, offset = 0; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 521 | const u32 *buffer; |
| 522 | int mlen; |
| 523 | struct sg_mapping_iter mi; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 524 | |
| 525 | dev_dbg(dd->dev, "xmit_cpu: digcnt: %d, length: %d, final: %d\n", |
| 526 | ctx->digcnt, length, final); |
| 527 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 528 | dd->pdata->write_ctrl(dd, length, final, 0); |
| 529 | dd->pdata->trigger(dd, length); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 530 | |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 531 | /* should be non-zero before next lines to disable clocks later */ |
| 532 | ctx->digcnt += length; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 533 | ctx->total -= length; |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 534 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 535 | if (final) |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 536 | set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 537 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 538 | set_bit(FLAGS_CPU, &dd->flags); |
| 539 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 540 | len32 = DIV_ROUND_UP(length, sizeof(u32)); |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 541 | bs32 = get_block_size(ctx) / sizeof(u32); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 542 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 543 | sg_miter_start(&mi, ctx->sg, ctx->sg_len, |
| 544 | SG_MITER_FROM_SG | SG_MITER_ATOMIC); |
| 545 | |
| 546 | mlen = 0; |
| 547 | |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 548 | while (len32) { |
| 549 | if (dd->pdata->poll_irq(dd)) |
| 550 | return -ETIMEDOUT; |
| 551 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 552 | for (count = 0; count < min(len32, bs32); count++, offset++) { |
| 553 | if (!mlen) { |
| 554 | sg_miter_next(&mi); |
| 555 | mlen = mi.length; |
| 556 | if (!mlen) { |
| 557 | pr_err("sg miter failure.\n"); |
| 558 | return -EINVAL; |
| 559 | } |
| 560 | offset = 0; |
| 561 | buffer = mi.addr; |
| 562 | } |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 563 | omap_sham_write(dd, SHA_REG_DIN(dd, count), |
| 564 | buffer[offset]); |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 565 | mlen -= 4; |
| 566 | } |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 567 | len32 -= min(len32, bs32); |
| 568 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 569 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 570 | sg_miter_stop(&mi); |
| 571 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 572 | return -EINPROGRESS; |
| 573 | } |
| 574 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 575 | static void omap_sham_dma_callback(void *param) |
| 576 | { |
| 577 | struct omap_sham_dev *dd = param; |
| 578 | |
| 579 | set_bit(FLAGS_DMA_READY, &dd->flags); |
| 580 | tasklet_schedule(&dd->done_task); |
| 581 | } |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 582 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 583 | static int omap_sham_xmit_dma(struct omap_sham_dev *dd, size_t length, |
| 584 | int final) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 585 | { |
| 586 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 587 | struct dma_async_tx_descriptor *tx; |
| 588 | struct dma_slave_config cfg; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 589 | int ret; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 590 | |
| 591 | dev_dbg(dd->dev, "xmit_dma: digcnt: %d, length: %d, final: %d\n", |
| 592 | ctx->digcnt, length, final); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 593 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 594 | if (!dma_map_sg(dd->dev, ctx->sg, ctx->sg_len, DMA_TO_DEVICE)) { |
| 595 | dev_err(dd->dev, "dma_map_sg error\n"); |
| 596 | return -EINVAL; |
| 597 | } |
| 598 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 599 | memset(&cfg, 0, sizeof(cfg)); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 600 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 601 | cfg.dst_addr = dd->phys_base + SHA_REG_DIN(dd, 0); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 602 | cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 603 | cfg.dst_maxburst = get_block_size(ctx) / DMA_SLAVE_BUSWIDTH_4_BYTES; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 604 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 605 | ret = dmaengine_slave_config(dd->dma_lch, &cfg); |
| 606 | if (ret) { |
| 607 | pr_err("omap-sham: can't configure dmaengine slave: %d\n", ret); |
| 608 | return ret; |
| 609 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 610 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 611 | tx = dmaengine_prep_slave_sg(dd->dma_lch, ctx->sg, ctx->sg_len, |
| 612 | DMA_MEM_TO_DEV, |
| 613 | DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 614 | |
| 615 | if (!tx) { |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 616 | dev_err(dd->dev, "prep_slave_sg failed\n"); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 617 | return -EINVAL; |
| 618 | } |
| 619 | |
| 620 | tx->callback = omap_sham_dma_callback; |
| 621 | tx->callback_param = dd; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 622 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 623 | dd->pdata->write_ctrl(dd, length, final, 1); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 624 | |
| 625 | ctx->digcnt += length; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 626 | ctx->total -= length; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 627 | |
| 628 | if (final) |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 629 | set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 630 | |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 631 | set_bit(FLAGS_DMA_ACTIVE, &dd->flags); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 632 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 633 | dmaengine_submit(tx); |
| 634 | dma_async_issue_pending(dd->dma_lch); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 635 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 636 | dd->pdata->trigger(dd, length); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 637 | |
| 638 | return -EINPROGRESS; |
| 639 | } |
| 640 | |
Tero Kristo | f19de1b | 2016-09-19 18:22:15 +0300 | [diff] [blame] | 641 | static int omap_sham_copy_sg_lists(struct omap_sham_reqctx *ctx, |
| 642 | struct scatterlist *sg, int bs, int new_len) |
| 643 | { |
| 644 | int n = sg_nents(sg); |
| 645 | struct scatterlist *tmp; |
| 646 | int offset = ctx->offset; |
| 647 | |
| 648 | if (ctx->bufcnt) |
| 649 | n++; |
| 650 | |
| 651 | ctx->sg = kmalloc_array(n, sizeof(*sg), GFP_KERNEL); |
| 652 | if (!ctx->sg) |
| 653 | return -ENOMEM; |
| 654 | |
| 655 | sg_init_table(ctx->sg, n); |
| 656 | |
| 657 | tmp = ctx->sg; |
| 658 | |
| 659 | ctx->sg_len = 0; |
| 660 | |
| 661 | if (ctx->bufcnt) { |
| 662 | sg_set_buf(tmp, ctx->dd->xmit_buf, ctx->bufcnt); |
| 663 | tmp = sg_next(tmp); |
| 664 | ctx->sg_len++; |
| 665 | } |
| 666 | |
| 667 | while (sg && new_len) { |
| 668 | int len = sg->length - offset; |
| 669 | |
| 670 | if (offset) { |
| 671 | offset -= sg->length; |
| 672 | if (offset < 0) |
| 673 | offset = 0; |
| 674 | } |
| 675 | |
| 676 | if (new_len < len) |
| 677 | len = new_len; |
| 678 | |
| 679 | if (len > 0) { |
| 680 | new_len -= len; |
| 681 | sg_set_page(tmp, sg_page(sg), len, sg->offset); |
| 682 | if (new_len <= 0) |
| 683 | sg_mark_end(tmp); |
| 684 | tmp = sg_next(tmp); |
| 685 | ctx->sg_len++; |
| 686 | } |
| 687 | |
| 688 | sg = sg_next(sg); |
| 689 | } |
| 690 | |
| 691 | set_bit(FLAGS_SGS_ALLOCED, &ctx->dd->flags); |
| 692 | |
| 693 | ctx->bufcnt = 0; |
| 694 | |
| 695 | return 0; |
| 696 | } |
| 697 | |
| 698 | static int omap_sham_copy_sgs(struct omap_sham_reqctx *ctx, |
| 699 | struct scatterlist *sg, int bs, int new_len) |
| 700 | { |
| 701 | int pages; |
| 702 | void *buf; |
| 703 | int len; |
| 704 | |
| 705 | len = new_len + ctx->bufcnt; |
| 706 | |
| 707 | pages = get_order(ctx->total); |
| 708 | |
| 709 | buf = (void *)__get_free_pages(GFP_ATOMIC, pages); |
| 710 | if (!buf) { |
| 711 | pr_err("Couldn't allocate pages for unaligned cases.\n"); |
| 712 | return -ENOMEM; |
| 713 | } |
| 714 | |
| 715 | if (ctx->bufcnt) |
| 716 | memcpy(buf, ctx->dd->xmit_buf, ctx->bufcnt); |
| 717 | |
| 718 | scatterwalk_map_and_copy(buf + ctx->bufcnt, sg, ctx->offset, |
| 719 | ctx->total - ctx->bufcnt, 0); |
| 720 | sg_init_table(ctx->sgl, 1); |
| 721 | sg_set_buf(ctx->sgl, buf, len); |
| 722 | ctx->sg = ctx->sgl; |
| 723 | set_bit(FLAGS_SGS_COPIED, &ctx->dd->flags); |
| 724 | ctx->sg_len = 1; |
| 725 | ctx->bufcnt = 0; |
| 726 | ctx->offset = 0; |
| 727 | |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | static int omap_sham_align_sgs(struct scatterlist *sg, |
| 732 | int nbytes, int bs, bool final, |
| 733 | struct omap_sham_reqctx *rctx) |
| 734 | { |
| 735 | int n = 0; |
| 736 | bool aligned = true; |
| 737 | bool list_ok = true; |
| 738 | struct scatterlist *sg_tmp = sg; |
| 739 | int new_len; |
| 740 | int offset = rctx->offset; |
| 741 | |
| 742 | if (!sg || !sg->length || !nbytes) |
| 743 | return 0; |
| 744 | |
| 745 | new_len = nbytes; |
| 746 | |
| 747 | if (offset) |
| 748 | list_ok = false; |
| 749 | |
| 750 | if (final) |
| 751 | new_len = DIV_ROUND_UP(new_len, bs) * bs; |
| 752 | else |
| 753 | new_len = new_len / bs * bs; |
| 754 | |
| 755 | while (nbytes > 0 && sg_tmp) { |
| 756 | n++; |
| 757 | |
| 758 | if (offset < sg_tmp->length) { |
| 759 | if (!IS_ALIGNED(offset + sg_tmp->offset, 4)) { |
| 760 | aligned = false; |
| 761 | break; |
| 762 | } |
| 763 | |
| 764 | if (!IS_ALIGNED(sg_tmp->length - offset, bs)) { |
| 765 | aligned = false; |
| 766 | break; |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | if (offset) { |
| 771 | offset -= sg_tmp->length; |
| 772 | if (offset < 0) { |
| 773 | nbytes += offset; |
| 774 | offset = 0; |
| 775 | } |
| 776 | } else { |
| 777 | nbytes -= sg_tmp->length; |
| 778 | } |
| 779 | |
| 780 | sg_tmp = sg_next(sg_tmp); |
| 781 | |
| 782 | if (nbytes < 0) { |
| 783 | list_ok = false; |
| 784 | break; |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | if (!aligned) |
| 789 | return omap_sham_copy_sgs(rctx, sg, bs, new_len); |
| 790 | else if (!list_ok) |
| 791 | return omap_sham_copy_sg_lists(rctx, sg, bs, new_len); |
| 792 | |
| 793 | rctx->sg_len = n; |
| 794 | rctx->sg = sg; |
| 795 | |
| 796 | return 0; |
| 797 | } |
| 798 | |
| 799 | static int omap_sham_prepare_request(struct ahash_request *req, bool update) |
| 800 | { |
| 801 | struct omap_sham_reqctx *rctx = ahash_request_ctx(req); |
| 802 | int bs; |
| 803 | int ret; |
| 804 | int nbytes; |
| 805 | bool final = rctx->flags & BIT(FLAGS_FINUP); |
| 806 | int xmit_len, hash_later; |
| 807 | |
| 808 | if (!req) |
| 809 | return 0; |
| 810 | |
| 811 | bs = get_block_size(rctx); |
| 812 | |
| 813 | if (update) |
| 814 | nbytes = req->nbytes; |
| 815 | else |
| 816 | nbytes = 0; |
| 817 | |
| 818 | rctx->total = nbytes + rctx->bufcnt; |
| 819 | |
| 820 | if (!rctx->total) |
| 821 | return 0; |
| 822 | |
| 823 | if (nbytes && (!IS_ALIGNED(rctx->bufcnt, bs))) { |
| 824 | int len = bs - rctx->bufcnt % bs; |
| 825 | |
| 826 | if (len > nbytes) |
| 827 | len = nbytes; |
| 828 | scatterwalk_map_and_copy(rctx->buffer + rctx->bufcnt, req->src, |
| 829 | 0, len, 0); |
| 830 | rctx->bufcnt += len; |
| 831 | nbytes -= len; |
| 832 | rctx->offset = len; |
| 833 | } |
| 834 | |
| 835 | if (rctx->bufcnt) |
| 836 | memcpy(rctx->dd->xmit_buf, rctx->buffer, rctx->bufcnt); |
| 837 | |
| 838 | ret = omap_sham_align_sgs(req->src, nbytes, bs, final, rctx); |
| 839 | if (ret) |
| 840 | return ret; |
| 841 | |
| 842 | xmit_len = rctx->total; |
| 843 | |
| 844 | if (!IS_ALIGNED(xmit_len, bs)) { |
| 845 | if (final) |
| 846 | xmit_len = DIV_ROUND_UP(xmit_len, bs) * bs; |
| 847 | else |
| 848 | xmit_len = xmit_len / bs * bs; |
| 849 | } |
| 850 | |
| 851 | hash_later = rctx->total - xmit_len; |
| 852 | if (hash_later < 0) |
| 853 | hash_later = 0; |
| 854 | |
| 855 | if (rctx->bufcnt && nbytes) { |
| 856 | /* have data from previous operation and current */ |
| 857 | sg_init_table(rctx->sgl, 2); |
| 858 | sg_set_buf(rctx->sgl, rctx->dd->xmit_buf, rctx->bufcnt); |
| 859 | |
| 860 | sg_chain(rctx->sgl, 2, req->src); |
| 861 | |
| 862 | rctx->sg = rctx->sgl; |
| 863 | |
| 864 | rctx->sg_len++; |
| 865 | } else if (rctx->bufcnt) { |
| 866 | /* have buffered data only */ |
| 867 | sg_init_table(rctx->sgl, 1); |
| 868 | sg_set_buf(rctx->sgl, rctx->dd->xmit_buf, xmit_len); |
| 869 | |
| 870 | rctx->sg = rctx->sgl; |
| 871 | |
| 872 | rctx->sg_len = 1; |
| 873 | } |
| 874 | |
| 875 | if (hash_later) { |
| 876 | if (req->nbytes) { |
| 877 | scatterwalk_map_and_copy(rctx->buffer, req->src, |
| 878 | req->nbytes - hash_later, |
| 879 | hash_later, 0); |
| 880 | } else { |
| 881 | memcpy(rctx->buffer, rctx->buffer + xmit_len, |
| 882 | hash_later); |
| 883 | } |
| 884 | rctx->bufcnt = hash_later; |
| 885 | } else { |
| 886 | rctx->bufcnt = 0; |
| 887 | } |
| 888 | |
| 889 | if (!final) |
| 890 | rctx->total = xmit_len; |
| 891 | |
| 892 | return 0; |
| 893 | } |
| 894 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 895 | static int omap_sham_update_dma_stop(struct omap_sham_dev *dd) |
| 896 | { |
| 897 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); |
| 898 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 899 | dma_unmap_sg(dd->dev, ctx->sg, ctx->sg_len, DMA_TO_DEVICE); |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 900 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 901 | clear_bit(FLAGS_DMA_ACTIVE, &dd->flags); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 902 | |
| 903 | return 0; |
| 904 | } |
| 905 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 906 | static int omap_sham_init(struct ahash_request *req) |
| 907 | { |
| 908 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 909 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 910 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 911 | struct omap_sham_dev *dd = NULL, *tmp; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 912 | int bs = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 913 | |
| 914 | spin_lock_bh(&sham.lock); |
| 915 | if (!tctx->dd) { |
| 916 | list_for_each_entry(tmp, &sham.dev_list, list) { |
| 917 | dd = tmp; |
| 918 | break; |
| 919 | } |
| 920 | tctx->dd = dd; |
| 921 | } else { |
| 922 | dd = tctx->dd; |
| 923 | } |
| 924 | spin_unlock_bh(&sham.lock); |
| 925 | |
| 926 | ctx->dd = dd; |
| 927 | |
| 928 | ctx->flags = 0; |
| 929 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 930 | dev_dbg(dd->dev, "init: digest size: %d\n", |
| 931 | crypto_ahash_digestsize(tfm)); |
| 932 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 933 | switch (crypto_ahash_digestsize(tfm)) { |
| 934 | case MD5_DIGEST_SIZE: |
| 935 | ctx->flags |= FLAGS_MODE_MD5; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 936 | bs = SHA1_BLOCK_SIZE; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 937 | break; |
| 938 | case SHA1_DIGEST_SIZE: |
| 939 | ctx->flags |= FLAGS_MODE_SHA1; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 940 | bs = SHA1_BLOCK_SIZE; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 941 | break; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 942 | case SHA224_DIGEST_SIZE: |
| 943 | ctx->flags |= FLAGS_MODE_SHA224; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 944 | bs = SHA224_BLOCK_SIZE; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 945 | break; |
| 946 | case SHA256_DIGEST_SIZE: |
| 947 | ctx->flags |= FLAGS_MODE_SHA256; |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 948 | bs = SHA256_BLOCK_SIZE; |
| 949 | break; |
| 950 | case SHA384_DIGEST_SIZE: |
| 951 | ctx->flags |= FLAGS_MODE_SHA384; |
| 952 | bs = SHA384_BLOCK_SIZE; |
| 953 | break; |
| 954 | case SHA512_DIGEST_SIZE: |
| 955 | ctx->flags |= FLAGS_MODE_SHA512; |
| 956 | bs = SHA512_BLOCK_SIZE; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 957 | break; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 958 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 959 | |
| 960 | ctx->bufcnt = 0; |
| 961 | ctx->digcnt = 0; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 962 | ctx->total = 0; |
| 963 | ctx->offset = 0; |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 964 | ctx->buflen = BUFLEN; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 965 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 966 | if (tctx->flags & BIT(FLAGS_HMAC)) { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 967 | if (!test_bit(FLAGS_AUTO_XOR, &dd->flags)) { |
| 968 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 969 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 970 | memcpy(ctx->buffer, bctx->ipad, bs); |
| 971 | ctx->bufcnt = bs; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 972 | } |
| 973 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 974 | ctx->flags |= BIT(FLAGS_HMAC); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 975 | } |
| 976 | |
| 977 | return 0; |
| 978 | |
| 979 | } |
| 980 | |
| 981 | static int omap_sham_update_req(struct omap_sham_dev *dd) |
| 982 | { |
| 983 | struct ahash_request *req = dd->req; |
| 984 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 985 | int err; |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 986 | bool final = ctx->flags & BIT(FLAGS_FINUP); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 987 | |
| 988 | 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] | 989 | ctx->total, ctx->digcnt, (ctx->flags & BIT(FLAGS_FINUP)) != 0); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 990 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 991 | if (ctx->total < get_block_size(ctx) || |
| 992 | ctx->total < OMAP_SHA_DMA_THRESHOLD) |
| 993 | ctx->flags |= BIT(FLAGS_CPU); |
| 994 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 995 | if (ctx->flags & BIT(FLAGS_CPU)) |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 996 | err = omap_sham_xmit_cpu(dd, ctx->total, final); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 997 | else |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 998 | err = omap_sham_xmit_dma(dd, ctx->total, final); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 999 | |
| 1000 | /* wait for dma completion before can take more data */ |
| 1001 | dev_dbg(dd->dev, "update: err: %d, digcnt: %d\n", err, ctx->digcnt); |
| 1002 | |
| 1003 | return err; |
| 1004 | } |
| 1005 | |
| 1006 | static int omap_sham_final_req(struct omap_sham_dev *dd) |
| 1007 | { |
| 1008 | struct ahash_request *req = dd->req; |
| 1009 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1010 | int err = 0, use_dma = 1; |
| 1011 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1012 | if ((ctx->total <= get_block_size(ctx)) || dd->polling_mode) |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1013 | /* |
| 1014 | * faster to handle last block with cpu or |
| 1015 | * use cpu when dma is not present. |
| 1016 | */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1017 | use_dma = 0; |
| 1018 | |
| 1019 | if (use_dma) |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1020 | err = omap_sham_xmit_dma(dd, ctx->total, 1); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1021 | else |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1022 | err = omap_sham_xmit_cpu(dd, ctx->total, 1); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1023 | |
| 1024 | ctx->bufcnt = 0; |
| 1025 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1026 | dev_dbg(dd->dev, "final_req: err: %d\n", err); |
| 1027 | |
| 1028 | return err; |
| 1029 | } |
| 1030 | |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1031 | static int omap_sham_finish_hmac(struct ahash_request *req) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1032 | { |
| 1033 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); |
| 1034 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 1035 | int bs = crypto_shash_blocksize(bctx->shash); |
| 1036 | int ds = crypto_shash_digestsize(bctx->shash); |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1037 | SHASH_DESC_ON_STACK(shash, bctx->shash); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1038 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1039 | shash->tfm = bctx->shash; |
| 1040 | shash->flags = 0; /* not CRYPTO_TFM_REQ_MAY_SLEEP */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1041 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1042 | return crypto_shash_init(shash) ?: |
| 1043 | crypto_shash_update(shash, bctx->opad, bs) ?: |
| 1044 | crypto_shash_finup(shash, req->result, ds, req->result); |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1045 | } |
| 1046 | |
| 1047 | static int omap_sham_finish(struct ahash_request *req) |
| 1048 | { |
| 1049 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1050 | struct omap_sham_dev *dd = ctx->dd; |
| 1051 | int err = 0; |
| 1052 | |
| 1053 | if (ctx->digcnt) { |
| 1054 | omap_sham_copy_ready_hash(req); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1055 | if ((ctx->flags & BIT(FLAGS_HMAC)) && |
| 1056 | !test_bit(FLAGS_AUTO_XOR, &dd->flags)) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1057 | err = omap_sham_finish_hmac(req); |
| 1058 | } |
| 1059 | |
| 1060 | dev_dbg(dd->dev, "digcnt: %d, bufcnt: %d\n", ctx->digcnt, ctx->bufcnt); |
| 1061 | |
| 1062 | return err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1063 | } |
| 1064 | |
| 1065 | static void omap_sham_finish_req(struct ahash_request *req, int err) |
| 1066 | { |
| 1067 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1068 | struct omap_sham_dev *dd = ctx->dd; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1069 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1070 | if (test_bit(FLAGS_SGS_COPIED, &dd->flags)) |
| 1071 | free_pages((unsigned long)sg_virt(ctx->sg), |
| 1072 | get_order(ctx->sg->length)); |
| 1073 | |
| 1074 | if (test_bit(FLAGS_SGS_ALLOCED, &dd->flags)) |
| 1075 | kfree(ctx->sg); |
| 1076 | |
| 1077 | ctx->sg = NULL; |
| 1078 | |
| 1079 | dd->flags &= ~(BIT(FLAGS_SGS_ALLOCED) | BIT(FLAGS_SGS_COPIED)); |
| 1080 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1081 | if (!err) { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1082 | dd->pdata->copy_hash(req, 1); |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 1083 | if (test_bit(FLAGS_FINAL, &dd->flags)) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1084 | err = omap_sham_finish(req); |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 1085 | } else { |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1086 | ctx->flags |= BIT(FLAGS_ERROR); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1087 | } |
| 1088 | |
Dmitry Kasatkin | 0efd4d8 | 2011-06-02 21:10:12 +0300 | [diff] [blame] | 1089 | /* atomic operation is not needed here */ |
| 1090 | dd->flags &= ~(BIT(FLAGS_BUSY) | BIT(FLAGS_FINAL) | BIT(FLAGS_CPU) | |
| 1091 | BIT(FLAGS_DMA_READY) | BIT(FLAGS_OUTPUT_READY)); |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 1092 | |
Tero Kristo | e93f767 | 2016-06-22 16:23:34 +0300 | [diff] [blame] | 1093 | pm_runtime_mark_last_busy(dd->dev); |
| 1094 | pm_runtime_put_autosuspend(dd->dev); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1095 | |
| 1096 | if (req->base.complete) |
| 1097 | req->base.complete(&req->base, err); |
| 1098 | } |
| 1099 | |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1100 | static int omap_sham_handle_queue(struct omap_sham_dev *dd, |
| 1101 | struct ahash_request *req) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1102 | { |
Dmitry Kasatkin | 6c39d11 | 2010-12-29 21:52:04 +1100 | [diff] [blame] | 1103 | struct crypto_async_request *async_req, *backlog; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1104 | struct omap_sham_reqctx *ctx; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1105 | unsigned long flags; |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1106 | int err = 0, ret = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1107 | |
Tero Kristo | 4e7813a | 2016-08-04 13:28:36 +0300 | [diff] [blame] | 1108 | retry: |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1109 | spin_lock_irqsave(&dd->lock, flags); |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1110 | if (req) |
| 1111 | ret = ahash_enqueue_request(&dd->queue, req); |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 1112 | if (test_bit(FLAGS_BUSY, &dd->flags)) { |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1113 | spin_unlock_irqrestore(&dd->lock, flags); |
| 1114 | return ret; |
| 1115 | } |
Dmitry Kasatkin | 6c39d11 | 2010-12-29 21:52:04 +1100 | [diff] [blame] | 1116 | backlog = crypto_get_backlog(&dd->queue); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1117 | async_req = crypto_dequeue_request(&dd->queue); |
Dmitry Kasatkin | 6c39d11 | 2010-12-29 21:52:04 +1100 | [diff] [blame] | 1118 | if (async_req) |
Dmitry Kasatkin | a929cbe | 2011-06-02 21:10:06 +0300 | [diff] [blame] | 1119 | set_bit(FLAGS_BUSY, &dd->flags); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1120 | spin_unlock_irqrestore(&dd->lock, flags); |
| 1121 | |
| 1122 | if (!async_req) |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1123 | return ret; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1124 | |
| 1125 | if (backlog) |
| 1126 | backlog->complete(backlog, -EINPROGRESS); |
| 1127 | |
| 1128 | req = ahash_request_cast(async_req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1129 | dd->req = req; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1130 | ctx = ahash_request_ctx(req); |
| 1131 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1132 | err = omap_sham_prepare_request(req, ctx->op == OP_UPDATE); |
Tero Kristo | f19de1b | 2016-09-19 18:22:15 +0300 | [diff] [blame] | 1133 | if (err) |
| 1134 | goto err1; |
| 1135 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1136 | dev_dbg(dd->dev, "handling new req, op: %lu, nbytes: %d\n", |
| 1137 | ctx->op, req->nbytes); |
| 1138 | |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1139 | err = omap_sham_hw_init(dd); |
| 1140 | if (err) |
| 1141 | goto err1; |
| 1142 | |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1143 | if (ctx->digcnt) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1144 | /* request has changed - restore hash */ |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1145 | dd->pdata->copy_hash(req, 0); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1146 | |
| 1147 | if (ctx->op == OP_UPDATE) { |
| 1148 | err = omap_sham_update_req(dd); |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1149 | if (err != -EINPROGRESS && (ctx->flags & BIT(FLAGS_FINUP))) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1150 | /* no final() after finup() */ |
| 1151 | err = omap_sham_final_req(dd); |
| 1152 | } else if (ctx->op == OP_FINAL) { |
| 1153 | err = omap_sham_final_req(dd); |
| 1154 | } |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1155 | err1: |
Tero Kristo | 4e7813a | 2016-08-04 13:28:36 +0300 | [diff] [blame] | 1156 | dev_dbg(dd->dev, "exit, err: %d\n", err); |
| 1157 | |
| 1158 | if (err != -EINPROGRESS) { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1159 | /* done_task will not finish it, so do it here */ |
| 1160 | omap_sham_finish_req(req, err); |
Tero Kristo | 4e7813a | 2016-08-04 13:28:36 +0300 | [diff] [blame] | 1161 | req = NULL; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1162 | |
Tero Kristo | 4e7813a | 2016-08-04 13:28:36 +0300 | [diff] [blame] | 1163 | /* |
| 1164 | * Execute next request immediately if there is anything |
| 1165 | * in queue. |
| 1166 | */ |
| 1167 | goto retry; |
| 1168 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1169 | |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1170 | return ret; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1171 | } |
| 1172 | |
| 1173 | static int omap_sham_enqueue(struct ahash_request *req, unsigned int op) |
| 1174 | { |
| 1175 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1176 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); |
| 1177 | struct omap_sham_dev *dd = tctx->dd; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1178 | |
| 1179 | ctx->op = op; |
| 1180 | |
Dmitry Kasatkin | a5d8723 | 2010-11-19 16:04:25 +0200 | [diff] [blame] | 1181 | return omap_sham_handle_queue(dd, req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1182 | } |
| 1183 | |
| 1184 | static int omap_sham_update(struct ahash_request *req) |
| 1185 | { |
| 1186 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 1187 | struct omap_sham_dev *dd = ctx->dd; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1188 | |
| 1189 | if (!req->nbytes) |
| 1190 | return 0; |
| 1191 | |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1192 | if (ctx->total + req->nbytes < ctx->buflen) { |
| 1193 | scatterwalk_map_and_copy(ctx->buffer + ctx->bufcnt, req->src, |
| 1194 | 0, req->nbytes, 0); |
| 1195 | ctx->bufcnt += req->nbytes; |
| 1196 | ctx->total += req->nbytes; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1197 | return 0; |
| 1198 | } |
| 1199 | |
Lokesh Vutla | acef7b0 | 2013-12-18 19:03:33 +0530 | [diff] [blame] | 1200 | if (dd->polling_mode) |
| 1201 | ctx->flags |= BIT(FLAGS_CPU); |
| 1202 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1203 | return omap_sham_enqueue(req, OP_UPDATE); |
| 1204 | } |
| 1205 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1206 | static int omap_sham_shash_digest(struct crypto_shash *tfm, u32 flags, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1207 | const u8 *data, unsigned int len, u8 *out) |
| 1208 | { |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1209 | SHASH_DESC_ON_STACK(shash, tfm); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1210 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1211 | shash->tfm = tfm; |
| 1212 | shash->flags = flags & CRYPTO_TFM_REQ_MAY_SLEEP; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1213 | |
Behan Webster | 7bc53c3 | 2014-04-04 18:18:00 -0300 | [diff] [blame] | 1214 | return crypto_shash_digest(shash, data, len, out); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1215 | } |
| 1216 | |
| 1217 | static int omap_sham_final_shash(struct ahash_request *req) |
| 1218 | { |
| 1219 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); |
| 1220 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Tero Kristo | cb8d5c8 | 2016-08-04 13:28:40 +0300 | [diff] [blame] | 1221 | int offset = 0; |
| 1222 | |
| 1223 | /* |
| 1224 | * If we are running HMAC on limited hardware support, skip |
| 1225 | * the ipad in the beginning of the buffer if we are going for |
| 1226 | * software fallback algorithm. |
| 1227 | */ |
| 1228 | if (test_bit(FLAGS_HMAC, &ctx->flags) && |
| 1229 | !test_bit(FLAGS_AUTO_XOR, &ctx->dd->flags)) |
| 1230 | offset = get_block_size(ctx); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1231 | |
| 1232 | return omap_sham_shash_digest(tctx->fallback, req->base.flags, |
Tero Kristo | cb8d5c8 | 2016-08-04 13:28:40 +0300 | [diff] [blame] | 1233 | ctx->buffer + offset, |
| 1234 | ctx->bufcnt - offset, req->result); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1235 | } |
| 1236 | |
| 1237 | static int omap_sham_final(struct ahash_request *req) |
| 1238 | { |
| 1239 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1240 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1241 | ctx->flags |= BIT(FLAGS_FINUP); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1242 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1243 | if (ctx->flags & BIT(FLAGS_ERROR)) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1244 | return 0; /* uncompleted hash is not needed */ |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1245 | |
Bin Liu | 85e0687 | 2016-06-22 16:23:37 +0300 | [diff] [blame] | 1246 | /* |
| 1247 | * OMAP HW accel works only with buffers >= 9. |
| 1248 | * HMAC is always >= 9 because ipad == block size. |
Tero Kristo | 2c5bd1e | 2016-09-19 18:22:16 +0300 | [diff] [blame] | 1249 | * If buffersize is less than DMA_THRESHOLD, we use fallback |
| 1250 | * SW encoding, as using DMA + HW in this case doesn't provide |
| 1251 | * any benefit. |
Bin Liu | 85e0687 | 2016-06-22 16:23:37 +0300 | [diff] [blame] | 1252 | */ |
Tero Kristo | 2c5bd1e | 2016-09-19 18:22:16 +0300 | [diff] [blame] | 1253 | if (!ctx->digcnt && ctx->bufcnt < OMAP_SHA_DMA_THRESHOLD) |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1254 | return omap_sham_final_shash(req); |
| 1255 | else if (ctx->bufcnt) |
| 1256 | return omap_sham_enqueue(req, OP_FINAL); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1257 | |
Dmitry Kasatkin | bf36275 | 2011-04-20 13:34:58 +0300 | [diff] [blame] | 1258 | /* copy ready hash (+ finalize hmac) */ |
| 1259 | return omap_sham_finish(req); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | static int omap_sham_finup(struct ahash_request *req) |
| 1263 | { |
| 1264 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); |
| 1265 | int err1, err2; |
| 1266 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1267 | ctx->flags |= BIT(FLAGS_FINUP); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1268 | |
| 1269 | err1 = omap_sham_update(req); |
Markku Kylanpaa | 455e338 | 2011-04-20 13:34:55 +0300 | [diff] [blame] | 1270 | if (err1 == -EINPROGRESS || err1 == -EBUSY) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1271 | return err1; |
| 1272 | /* |
| 1273 | * final() has to be always called to cleanup resources |
| 1274 | * even if udpate() failed, except EINPROGRESS |
| 1275 | */ |
| 1276 | err2 = omap_sham_final(req); |
| 1277 | |
| 1278 | return err1 ?: err2; |
| 1279 | } |
| 1280 | |
| 1281 | static int omap_sham_digest(struct ahash_request *req) |
| 1282 | { |
| 1283 | return omap_sham_init(req) ?: omap_sham_finup(req); |
| 1284 | } |
| 1285 | |
| 1286 | static int omap_sham_setkey(struct crypto_ahash *tfm, const u8 *key, |
| 1287 | unsigned int keylen) |
| 1288 | { |
| 1289 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); |
| 1290 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 1291 | int bs = crypto_shash_blocksize(bctx->shash); |
| 1292 | int ds = crypto_shash_digestsize(bctx->shash); |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1293 | struct omap_sham_dev *dd = NULL, *tmp; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1294 | int err, i; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1295 | |
| 1296 | spin_lock_bh(&sham.lock); |
| 1297 | if (!tctx->dd) { |
| 1298 | list_for_each_entry(tmp, &sham.dev_list, list) { |
| 1299 | dd = tmp; |
| 1300 | break; |
| 1301 | } |
| 1302 | tctx->dd = dd; |
| 1303 | } else { |
| 1304 | dd = tctx->dd; |
| 1305 | } |
| 1306 | spin_unlock_bh(&sham.lock); |
| 1307 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1308 | err = crypto_shash_setkey(tctx->fallback, key, keylen); |
| 1309 | if (err) |
| 1310 | return err; |
| 1311 | |
| 1312 | if (keylen > bs) { |
| 1313 | err = omap_sham_shash_digest(bctx->shash, |
| 1314 | crypto_shash_get_flags(bctx->shash), |
| 1315 | key, keylen, bctx->ipad); |
| 1316 | if (err) |
| 1317 | return err; |
| 1318 | keylen = ds; |
| 1319 | } else { |
| 1320 | memcpy(bctx->ipad, key, keylen); |
| 1321 | } |
| 1322 | |
| 1323 | memset(bctx->ipad + keylen, 0, bs - keylen); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1324 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1325 | if (!test_bit(FLAGS_AUTO_XOR, &dd->flags)) { |
| 1326 | memcpy(bctx->opad, bctx->ipad, bs); |
| 1327 | |
| 1328 | for (i = 0; i < bs; i++) { |
| 1329 | bctx->ipad[i] ^= 0x36; |
| 1330 | bctx->opad[i] ^= 0x5c; |
| 1331 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1332 | } |
| 1333 | |
| 1334 | return err; |
| 1335 | } |
| 1336 | |
| 1337 | static int omap_sham_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base) |
| 1338 | { |
| 1339 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm); |
| 1340 | const char *alg_name = crypto_tfm_alg_name(tfm); |
| 1341 | |
| 1342 | /* Allocate a fallback and abort if it failed. */ |
| 1343 | tctx->fallback = crypto_alloc_shash(alg_name, 0, |
| 1344 | CRYPTO_ALG_NEED_FALLBACK); |
| 1345 | if (IS_ERR(tctx->fallback)) { |
| 1346 | pr_err("omap-sham: fallback driver '%s' " |
| 1347 | "could not be loaded.\n", alg_name); |
| 1348 | return PTR_ERR(tctx->fallback); |
| 1349 | } |
| 1350 | |
| 1351 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1352 | sizeof(struct omap_sham_reqctx) + BUFLEN); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1353 | |
| 1354 | if (alg_base) { |
| 1355 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1356 | tctx->flags |= BIT(FLAGS_HMAC); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1357 | bctx->shash = crypto_alloc_shash(alg_base, 0, |
| 1358 | CRYPTO_ALG_NEED_FALLBACK); |
| 1359 | if (IS_ERR(bctx->shash)) { |
| 1360 | pr_err("omap-sham: base driver '%s' " |
| 1361 | "could not be loaded.\n", alg_base); |
| 1362 | crypto_free_shash(tctx->fallback); |
| 1363 | return PTR_ERR(bctx->shash); |
| 1364 | } |
| 1365 | |
| 1366 | } |
| 1367 | |
| 1368 | return 0; |
| 1369 | } |
| 1370 | |
| 1371 | static int omap_sham_cra_init(struct crypto_tfm *tfm) |
| 1372 | { |
| 1373 | return omap_sham_cra_init_alg(tfm, NULL); |
| 1374 | } |
| 1375 | |
| 1376 | static int omap_sham_cra_sha1_init(struct crypto_tfm *tfm) |
| 1377 | { |
| 1378 | return omap_sham_cra_init_alg(tfm, "sha1"); |
| 1379 | } |
| 1380 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1381 | static int omap_sham_cra_sha224_init(struct crypto_tfm *tfm) |
| 1382 | { |
| 1383 | return omap_sham_cra_init_alg(tfm, "sha224"); |
| 1384 | } |
| 1385 | |
| 1386 | static int omap_sham_cra_sha256_init(struct crypto_tfm *tfm) |
| 1387 | { |
| 1388 | return omap_sham_cra_init_alg(tfm, "sha256"); |
| 1389 | } |
| 1390 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1391 | static int omap_sham_cra_md5_init(struct crypto_tfm *tfm) |
| 1392 | { |
| 1393 | return omap_sham_cra_init_alg(tfm, "md5"); |
| 1394 | } |
| 1395 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1396 | static int omap_sham_cra_sha384_init(struct crypto_tfm *tfm) |
| 1397 | { |
| 1398 | return omap_sham_cra_init_alg(tfm, "sha384"); |
| 1399 | } |
| 1400 | |
| 1401 | static int omap_sham_cra_sha512_init(struct crypto_tfm *tfm) |
| 1402 | { |
| 1403 | return omap_sham_cra_init_alg(tfm, "sha512"); |
| 1404 | } |
| 1405 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1406 | static void omap_sham_cra_exit(struct crypto_tfm *tfm) |
| 1407 | { |
| 1408 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm); |
| 1409 | |
| 1410 | crypto_free_shash(tctx->fallback); |
| 1411 | tctx->fallback = NULL; |
| 1412 | |
Dmitry Kasatkin | ea1fd22 | 2011-06-02 21:10:05 +0300 | [diff] [blame] | 1413 | if (tctx->flags & BIT(FLAGS_HMAC)) { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1414 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
| 1415 | crypto_free_shash(bctx->shash); |
| 1416 | } |
| 1417 | } |
| 1418 | |
Tero Kristo | 99a7fff | 2016-09-19 18:22:12 +0300 | [diff] [blame] | 1419 | static int omap_sham_export(struct ahash_request *req, void *out) |
| 1420 | { |
Tero Kristo | a84d351 | 2016-09-19 18:22:18 +0300 | [diff] [blame] | 1421 | struct omap_sham_reqctx *rctx = ahash_request_ctx(req); |
| 1422 | |
| 1423 | memcpy(out, rctx, sizeof(*rctx) + rctx->bufcnt); |
| 1424 | |
| 1425 | return 0; |
Tero Kristo | 99a7fff | 2016-09-19 18:22:12 +0300 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | static int omap_sham_import(struct ahash_request *req, const void *in) |
| 1429 | { |
Tero Kristo | a84d351 | 2016-09-19 18:22:18 +0300 | [diff] [blame] | 1430 | struct omap_sham_reqctx *rctx = ahash_request_ctx(req); |
| 1431 | const struct omap_sham_reqctx *ctx_in = in; |
| 1432 | |
| 1433 | memcpy(rctx, in, sizeof(*rctx) + ctx_in->bufcnt); |
| 1434 | |
| 1435 | return 0; |
Tero Kristo | 99a7fff | 2016-09-19 18:22:12 +0300 | [diff] [blame] | 1436 | } |
| 1437 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1438 | static struct ahash_alg algs_sha1_md5[] = { |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1439 | { |
| 1440 | .init = omap_sham_init, |
| 1441 | .update = omap_sham_update, |
| 1442 | .final = omap_sham_final, |
| 1443 | .finup = omap_sham_finup, |
| 1444 | .digest = omap_sham_digest, |
| 1445 | .halg.digestsize = SHA1_DIGEST_SIZE, |
| 1446 | .halg.base = { |
| 1447 | .cra_name = "sha1", |
| 1448 | .cra_driver_name = "omap-sha1", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1449 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1450 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1451 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1452 | CRYPTO_ALG_ASYNC | |
| 1453 | CRYPTO_ALG_NEED_FALLBACK, |
| 1454 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1455 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Tero Kristo | 744e686 | 2016-09-19 18:22:13 +0300 | [diff] [blame] | 1456 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1457 | .cra_module = THIS_MODULE, |
| 1458 | .cra_init = omap_sham_cra_init, |
| 1459 | .cra_exit = omap_sham_cra_exit, |
| 1460 | } |
| 1461 | }, |
| 1462 | { |
| 1463 | .init = omap_sham_init, |
| 1464 | .update = omap_sham_update, |
| 1465 | .final = omap_sham_final, |
| 1466 | .finup = omap_sham_finup, |
| 1467 | .digest = omap_sham_digest, |
| 1468 | .halg.digestsize = MD5_DIGEST_SIZE, |
| 1469 | .halg.base = { |
| 1470 | .cra_name = "md5", |
| 1471 | .cra_driver_name = "omap-md5", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1472 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1473 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1474 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1475 | CRYPTO_ALG_ASYNC | |
| 1476 | CRYPTO_ALG_NEED_FALLBACK, |
| 1477 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1478 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1479 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1480 | .cra_module = THIS_MODULE, |
| 1481 | .cra_init = omap_sham_cra_init, |
| 1482 | .cra_exit = omap_sham_cra_exit, |
| 1483 | } |
| 1484 | }, |
| 1485 | { |
| 1486 | .init = omap_sham_init, |
| 1487 | .update = omap_sham_update, |
| 1488 | .final = omap_sham_final, |
| 1489 | .finup = omap_sham_finup, |
| 1490 | .digest = omap_sham_digest, |
| 1491 | .setkey = omap_sham_setkey, |
| 1492 | .halg.digestsize = SHA1_DIGEST_SIZE, |
| 1493 | .halg.base = { |
| 1494 | .cra_name = "hmac(sha1)", |
| 1495 | .cra_driver_name = "omap-hmac-sha1", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1496 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1497 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1498 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1499 | CRYPTO_ALG_ASYNC | |
| 1500 | CRYPTO_ALG_NEED_FALLBACK, |
| 1501 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1502 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1503 | sizeof(struct omap_sham_hmac_ctx), |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1504 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1505 | .cra_module = THIS_MODULE, |
| 1506 | .cra_init = omap_sham_cra_sha1_init, |
| 1507 | .cra_exit = omap_sham_cra_exit, |
| 1508 | } |
| 1509 | }, |
| 1510 | { |
| 1511 | .init = omap_sham_init, |
| 1512 | .update = omap_sham_update, |
| 1513 | .final = omap_sham_final, |
| 1514 | .finup = omap_sham_finup, |
| 1515 | .digest = omap_sham_digest, |
| 1516 | .setkey = omap_sham_setkey, |
| 1517 | .halg.digestsize = MD5_DIGEST_SIZE, |
| 1518 | .halg.base = { |
| 1519 | .cra_name = "hmac(md5)", |
| 1520 | .cra_driver_name = "omap-hmac-md5", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1521 | .cra_priority = 400, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1522 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
Nikos Mavrogiannopoulos | d912bb7 | 2011-11-01 13:39:56 +0100 | [diff] [blame] | 1523 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1524 | CRYPTO_ALG_ASYNC | |
| 1525 | CRYPTO_ALG_NEED_FALLBACK, |
| 1526 | .cra_blocksize = SHA1_BLOCK_SIZE, |
| 1527 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1528 | sizeof(struct omap_sham_hmac_ctx), |
Dmitry Kasatkin | 798eed5d | 2010-11-19 16:04:26 +0200 | [diff] [blame] | 1529 | .cra_alignmask = OMAP_ALIGN_MASK, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1530 | .cra_module = THIS_MODULE, |
| 1531 | .cra_init = omap_sham_cra_md5_init, |
| 1532 | .cra_exit = omap_sham_cra_exit, |
| 1533 | } |
| 1534 | } |
| 1535 | }; |
| 1536 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1537 | /* OMAP4 has some algs in addition to what OMAP2 has */ |
| 1538 | static struct ahash_alg algs_sha224_sha256[] = { |
| 1539 | { |
| 1540 | .init = omap_sham_init, |
| 1541 | .update = omap_sham_update, |
| 1542 | .final = omap_sham_final, |
| 1543 | .finup = omap_sham_finup, |
| 1544 | .digest = omap_sham_digest, |
| 1545 | .halg.digestsize = SHA224_DIGEST_SIZE, |
| 1546 | .halg.base = { |
| 1547 | .cra_name = "sha224", |
| 1548 | .cra_driver_name = "omap-sha224", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1549 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1550 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1551 | CRYPTO_ALG_ASYNC | |
| 1552 | CRYPTO_ALG_NEED_FALLBACK, |
| 1553 | .cra_blocksize = SHA224_BLOCK_SIZE, |
| 1554 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Tero Kristo | 744e686 | 2016-09-19 18:22:13 +0300 | [diff] [blame] | 1555 | .cra_alignmask = OMAP_ALIGN_MASK, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1556 | .cra_module = THIS_MODULE, |
| 1557 | .cra_init = omap_sham_cra_init, |
| 1558 | .cra_exit = omap_sham_cra_exit, |
| 1559 | } |
| 1560 | }, |
| 1561 | { |
| 1562 | .init = omap_sham_init, |
| 1563 | .update = omap_sham_update, |
| 1564 | .final = omap_sham_final, |
| 1565 | .finup = omap_sham_finup, |
| 1566 | .digest = omap_sham_digest, |
| 1567 | .halg.digestsize = SHA256_DIGEST_SIZE, |
| 1568 | .halg.base = { |
| 1569 | .cra_name = "sha256", |
| 1570 | .cra_driver_name = "omap-sha256", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1571 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1572 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1573 | CRYPTO_ALG_ASYNC | |
| 1574 | CRYPTO_ALG_NEED_FALLBACK, |
| 1575 | .cra_blocksize = SHA256_BLOCK_SIZE, |
| 1576 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Tero Kristo | 744e686 | 2016-09-19 18:22:13 +0300 | [diff] [blame] | 1577 | .cra_alignmask = OMAP_ALIGN_MASK, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1578 | .cra_module = THIS_MODULE, |
| 1579 | .cra_init = omap_sham_cra_init, |
| 1580 | .cra_exit = omap_sham_cra_exit, |
| 1581 | } |
| 1582 | }, |
| 1583 | { |
| 1584 | .init = omap_sham_init, |
| 1585 | .update = omap_sham_update, |
| 1586 | .final = omap_sham_final, |
| 1587 | .finup = omap_sham_finup, |
| 1588 | .digest = omap_sham_digest, |
| 1589 | .setkey = omap_sham_setkey, |
| 1590 | .halg.digestsize = SHA224_DIGEST_SIZE, |
| 1591 | .halg.base = { |
| 1592 | .cra_name = "hmac(sha224)", |
| 1593 | .cra_driver_name = "omap-hmac-sha224", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1594 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1595 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1596 | CRYPTO_ALG_ASYNC | |
| 1597 | CRYPTO_ALG_NEED_FALLBACK, |
| 1598 | .cra_blocksize = SHA224_BLOCK_SIZE, |
| 1599 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1600 | sizeof(struct omap_sham_hmac_ctx), |
| 1601 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1602 | .cra_module = THIS_MODULE, |
| 1603 | .cra_init = omap_sham_cra_sha224_init, |
| 1604 | .cra_exit = omap_sham_cra_exit, |
| 1605 | } |
| 1606 | }, |
| 1607 | { |
| 1608 | .init = omap_sham_init, |
| 1609 | .update = omap_sham_update, |
| 1610 | .final = omap_sham_final, |
| 1611 | .finup = omap_sham_finup, |
| 1612 | .digest = omap_sham_digest, |
| 1613 | .setkey = omap_sham_setkey, |
| 1614 | .halg.digestsize = SHA256_DIGEST_SIZE, |
| 1615 | .halg.base = { |
| 1616 | .cra_name = "hmac(sha256)", |
| 1617 | .cra_driver_name = "omap-hmac-sha256", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1618 | .cra_priority = 400, |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1619 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1620 | CRYPTO_ALG_ASYNC | |
| 1621 | CRYPTO_ALG_NEED_FALLBACK, |
| 1622 | .cra_blocksize = SHA256_BLOCK_SIZE, |
| 1623 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1624 | sizeof(struct omap_sham_hmac_ctx), |
| 1625 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1626 | .cra_module = THIS_MODULE, |
| 1627 | .cra_init = omap_sham_cra_sha256_init, |
| 1628 | .cra_exit = omap_sham_cra_exit, |
| 1629 | } |
| 1630 | }, |
| 1631 | }; |
| 1632 | |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1633 | static struct ahash_alg algs_sha384_sha512[] = { |
| 1634 | { |
| 1635 | .init = omap_sham_init, |
| 1636 | .update = omap_sham_update, |
| 1637 | .final = omap_sham_final, |
| 1638 | .finup = omap_sham_finup, |
| 1639 | .digest = omap_sham_digest, |
| 1640 | .halg.digestsize = SHA384_DIGEST_SIZE, |
| 1641 | .halg.base = { |
| 1642 | .cra_name = "sha384", |
| 1643 | .cra_driver_name = "omap-sha384", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1644 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1645 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1646 | CRYPTO_ALG_ASYNC | |
| 1647 | CRYPTO_ALG_NEED_FALLBACK, |
| 1648 | .cra_blocksize = SHA384_BLOCK_SIZE, |
| 1649 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Tero Kristo | 744e686 | 2016-09-19 18:22:13 +0300 | [diff] [blame] | 1650 | .cra_alignmask = OMAP_ALIGN_MASK, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1651 | .cra_module = THIS_MODULE, |
| 1652 | .cra_init = omap_sham_cra_init, |
| 1653 | .cra_exit = omap_sham_cra_exit, |
| 1654 | } |
| 1655 | }, |
| 1656 | { |
| 1657 | .init = omap_sham_init, |
| 1658 | .update = omap_sham_update, |
| 1659 | .final = omap_sham_final, |
| 1660 | .finup = omap_sham_finup, |
| 1661 | .digest = omap_sham_digest, |
| 1662 | .halg.digestsize = SHA512_DIGEST_SIZE, |
| 1663 | .halg.base = { |
| 1664 | .cra_name = "sha512", |
| 1665 | .cra_driver_name = "omap-sha512", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1666 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1667 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1668 | CRYPTO_ALG_ASYNC | |
| 1669 | CRYPTO_ALG_NEED_FALLBACK, |
| 1670 | .cra_blocksize = SHA512_BLOCK_SIZE, |
| 1671 | .cra_ctxsize = sizeof(struct omap_sham_ctx), |
Tero Kristo | 744e686 | 2016-09-19 18:22:13 +0300 | [diff] [blame] | 1672 | .cra_alignmask = OMAP_ALIGN_MASK, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1673 | .cra_module = THIS_MODULE, |
| 1674 | .cra_init = omap_sham_cra_init, |
| 1675 | .cra_exit = omap_sham_cra_exit, |
| 1676 | } |
| 1677 | }, |
| 1678 | { |
| 1679 | .init = omap_sham_init, |
| 1680 | .update = omap_sham_update, |
| 1681 | .final = omap_sham_final, |
| 1682 | .finup = omap_sham_finup, |
| 1683 | .digest = omap_sham_digest, |
| 1684 | .setkey = omap_sham_setkey, |
| 1685 | .halg.digestsize = SHA384_DIGEST_SIZE, |
| 1686 | .halg.base = { |
| 1687 | .cra_name = "hmac(sha384)", |
| 1688 | .cra_driver_name = "omap-hmac-sha384", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1689 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1690 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1691 | CRYPTO_ALG_ASYNC | |
| 1692 | CRYPTO_ALG_NEED_FALLBACK, |
| 1693 | .cra_blocksize = SHA384_BLOCK_SIZE, |
| 1694 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1695 | sizeof(struct omap_sham_hmac_ctx), |
| 1696 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1697 | .cra_module = THIS_MODULE, |
| 1698 | .cra_init = omap_sham_cra_sha384_init, |
| 1699 | .cra_exit = omap_sham_cra_exit, |
| 1700 | } |
| 1701 | }, |
| 1702 | { |
| 1703 | .init = omap_sham_init, |
| 1704 | .update = omap_sham_update, |
| 1705 | .final = omap_sham_final, |
| 1706 | .finup = omap_sham_finup, |
| 1707 | .digest = omap_sham_digest, |
| 1708 | .setkey = omap_sham_setkey, |
| 1709 | .halg.digestsize = SHA512_DIGEST_SIZE, |
| 1710 | .halg.base = { |
| 1711 | .cra_name = "hmac(sha512)", |
| 1712 | .cra_driver_name = "omap-hmac-sha512", |
Bin Liu | eb35478 | 2016-06-30 14:04:11 -0500 | [diff] [blame] | 1713 | .cra_priority = 400, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1714 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | |
| 1715 | CRYPTO_ALG_ASYNC | |
| 1716 | CRYPTO_ALG_NEED_FALLBACK, |
| 1717 | .cra_blocksize = SHA512_BLOCK_SIZE, |
| 1718 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + |
| 1719 | sizeof(struct omap_sham_hmac_ctx), |
| 1720 | .cra_alignmask = OMAP_ALIGN_MASK, |
| 1721 | .cra_module = THIS_MODULE, |
| 1722 | .cra_init = omap_sham_cra_sha512_init, |
| 1723 | .cra_exit = omap_sham_cra_exit, |
| 1724 | } |
| 1725 | }, |
| 1726 | }; |
| 1727 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1728 | static void omap_sham_done_task(unsigned long data) |
| 1729 | { |
| 1730 | struct omap_sham_dev *dd = (struct omap_sham_dev *)data; |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1731 | int err = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1732 | |
Dmitry Kasatkin | 6cb3ffe | 2011-06-02 21:10:09 +0300 | [diff] [blame] | 1733 | if (!test_bit(FLAGS_BUSY, &dd->flags)) { |
| 1734 | omap_sham_handle_queue(dd, NULL); |
| 1735 | return; |
| 1736 | } |
| 1737 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1738 | if (test_bit(FLAGS_CPU, &dd->flags)) { |
Tero Kristo | 8043bb1 | 2016-09-19 18:22:17 +0300 | [diff] [blame] | 1739 | if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) |
| 1740 | goto finish; |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1741 | } else if (test_bit(FLAGS_DMA_READY, &dd->flags)) { |
| 1742 | if (test_and_clear_bit(FLAGS_DMA_ACTIVE, &dd->flags)) { |
| 1743 | omap_sham_update_dma_stop(dd); |
| 1744 | if (dd->err) { |
| 1745 | err = dd->err; |
| 1746 | goto finish; |
| 1747 | } |
| 1748 | } |
| 1749 | if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) { |
| 1750 | /* hash or semi-hash ready */ |
| 1751 | clear_bit(FLAGS_DMA_READY, &dd->flags); |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1752 | goto finish; |
| 1753 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1754 | } |
| 1755 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1756 | return; |
Dmitry Kasatkin | 3e133c8 | 2010-11-19 16:04:24 +0200 | [diff] [blame] | 1757 | |
Dmitry Kasatkin | 6c63db8 | 2011-06-02 21:10:10 +0300 | [diff] [blame] | 1758 | finish: |
| 1759 | dev_dbg(dd->dev, "update done: err: %d\n", err); |
| 1760 | /* finish curent request */ |
| 1761 | omap_sham_finish_req(dd->req, err); |
Tero Kristo | 4e7813a | 2016-08-04 13:28:36 +0300 | [diff] [blame] | 1762 | |
| 1763 | /* If we are not busy, process next req */ |
| 1764 | if (!test_bit(FLAGS_BUSY, &dd->flags)) |
| 1765 | omap_sham_handle_queue(dd, NULL); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1766 | } |
| 1767 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1768 | static irqreturn_t omap_sham_irq_common(struct omap_sham_dev *dd) |
| 1769 | { |
| 1770 | if (!test_bit(FLAGS_BUSY, &dd->flags)) { |
| 1771 | dev_warn(dd->dev, "Interrupt when no active requests.\n"); |
| 1772 | } else { |
| 1773 | set_bit(FLAGS_OUTPUT_READY, &dd->flags); |
| 1774 | tasklet_schedule(&dd->done_task); |
| 1775 | } |
| 1776 | |
| 1777 | return IRQ_HANDLED; |
| 1778 | } |
| 1779 | |
| 1780 | static irqreturn_t omap_sham_irq_omap2(int irq, void *dev_id) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1781 | { |
| 1782 | struct omap_sham_dev *dd = dev_id; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1783 | |
Dmitry Kasatkin | ed3ea9a8 | 2011-06-02 21:10:07 +0300 | [diff] [blame] | 1784 | if (unlikely(test_bit(FLAGS_FINAL, &dd->flags))) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1785 | /* final -> allow device to go to power-saving mode */ |
| 1786 | omap_sham_write_mask(dd, SHA_REG_CTRL, 0, SHA_REG_CTRL_LENGTH); |
| 1787 | |
| 1788 | omap_sham_write_mask(dd, SHA_REG_CTRL, SHA_REG_CTRL_OUTPUT_READY, |
| 1789 | SHA_REG_CTRL_OUTPUT_READY); |
| 1790 | omap_sham_read(dd, SHA_REG_CTRL); |
| 1791 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1792 | return omap_sham_irq_common(dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1793 | } |
| 1794 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1795 | static irqreturn_t omap_sham_irq_omap4(int irq, void *dev_id) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1796 | { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1797 | struct omap_sham_dev *dd = dev_id; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1798 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1799 | 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] | 1800 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1801 | return omap_sham_irq_common(dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1802 | } |
| 1803 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1804 | static struct omap_sham_algs_info omap_sham_algs_info_omap2[] = { |
| 1805 | { |
| 1806 | .algs_list = algs_sha1_md5, |
| 1807 | .size = ARRAY_SIZE(algs_sha1_md5), |
| 1808 | }, |
| 1809 | }; |
| 1810 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1811 | static const struct omap_sham_pdata omap_sham_pdata_omap2 = { |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1812 | .algs_info = omap_sham_algs_info_omap2, |
| 1813 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap2), |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1814 | .flags = BIT(FLAGS_BE32_SHA1), |
| 1815 | .digest_size = SHA1_DIGEST_SIZE, |
| 1816 | .copy_hash = omap_sham_copy_hash_omap2, |
| 1817 | .write_ctrl = omap_sham_write_ctrl_omap2, |
| 1818 | .trigger = omap_sham_trigger_omap2, |
| 1819 | .poll_irq = omap_sham_poll_irq_omap2, |
| 1820 | .intr_hdlr = omap_sham_irq_omap2, |
| 1821 | .idigest_ofs = 0x00, |
| 1822 | .din_ofs = 0x1c, |
| 1823 | .digcnt_ofs = 0x14, |
| 1824 | .rev_ofs = 0x5c, |
| 1825 | .mask_ofs = 0x60, |
| 1826 | .sysstatus_ofs = 0x64, |
| 1827 | .major_mask = 0xf0, |
| 1828 | .major_shift = 4, |
| 1829 | .minor_mask = 0x0f, |
| 1830 | .minor_shift = 0, |
| 1831 | }; |
| 1832 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1833 | #ifdef CONFIG_OF |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1834 | static struct omap_sham_algs_info omap_sham_algs_info_omap4[] = { |
| 1835 | { |
| 1836 | .algs_list = algs_sha1_md5, |
| 1837 | .size = ARRAY_SIZE(algs_sha1_md5), |
| 1838 | }, |
| 1839 | { |
| 1840 | .algs_list = algs_sha224_sha256, |
| 1841 | .size = ARRAY_SIZE(algs_sha224_sha256), |
| 1842 | }, |
| 1843 | }; |
| 1844 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1845 | static const struct omap_sham_pdata omap_sham_pdata_omap4 = { |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 1846 | .algs_info = omap_sham_algs_info_omap4, |
| 1847 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap4), |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1848 | .flags = BIT(FLAGS_AUTO_XOR), |
| 1849 | .digest_size = SHA256_DIGEST_SIZE, |
| 1850 | .copy_hash = omap_sham_copy_hash_omap4, |
| 1851 | .write_ctrl = omap_sham_write_ctrl_omap4, |
| 1852 | .trigger = omap_sham_trigger_omap4, |
| 1853 | .poll_irq = omap_sham_poll_irq_omap4, |
| 1854 | .intr_hdlr = omap_sham_irq_omap4, |
| 1855 | .idigest_ofs = 0x020, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1856 | .odigest_ofs = 0x0, |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1857 | .din_ofs = 0x080, |
| 1858 | .digcnt_ofs = 0x040, |
| 1859 | .rev_ofs = 0x100, |
| 1860 | .mask_ofs = 0x110, |
| 1861 | .sysstatus_ofs = 0x114, |
Lokesh Vutla | eaef7e3 | 2013-07-26 12:29:14 +0530 | [diff] [blame] | 1862 | .mode_ofs = 0x44, |
| 1863 | .length_ofs = 0x48, |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1864 | .major_mask = 0x0700, |
| 1865 | .major_shift = 8, |
| 1866 | .minor_mask = 0x003f, |
| 1867 | .minor_shift = 0, |
| 1868 | }; |
| 1869 | |
Lokesh Vutla | 7d7c704 | 2013-07-26 12:29:15 +0530 | [diff] [blame] | 1870 | static struct omap_sham_algs_info omap_sham_algs_info_omap5[] = { |
| 1871 | { |
| 1872 | .algs_list = algs_sha1_md5, |
| 1873 | .size = ARRAY_SIZE(algs_sha1_md5), |
| 1874 | }, |
| 1875 | { |
| 1876 | .algs_list = algs_sha224_sha256, |
| 1877 | .size = ARRAY_SIZE(algs_sha224_sha256), |
| 1878 | }, |
| 1879 | { |
| 1880 | .algs_list = algs_sha384_sha512, |
| 1881 | .size = ARRAY_SIZE(algs_sha384_sha512), |
| 1882 | }, |
| 1883 | }; |
| 1884 | |
| 1885 | static const struct omap_sham_pdata omap_sham_pdata_omap5 = { |
| 1886 | .algs_info = omap_sham_algs_info_omap5, |
| 1887 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap5), |
| 1888 | .flags = BIT(FLAGS_AUTO_XOR), |
| 1889 | .digest_size = SHA512_DIGEST_SIZE, |
| 1890 | .copy_hash = omap_sham_copy_hash_omap4, |
| 1891 | .write_ctrl = omap_sham_write_ctrl_omap4, |
| 1892 | .trigger = omap_sham_trigger_omap4, |
| 1893 | .poll_irq = omap_sham_poll_irq_omap4, |
| 1894 | .intr_hdlr = omap_sham_irq_omap4, |
| 1895 | .idigest_ofs = 0x240, |
| 1896 | .odigest_ofs = 0x200, |
| 1897 | .din_ofs = 0x080, |
| 1898 | .digcnt_ofs = 0x280, |
| 1899 | .rev_ofs = 0x100, |
| 1900 | .mask_ofs = 0x110, |
| 1901 | .sysstatus_ofs = 0x114, |
| 1902 | .mode_ofs = 0x284, |
| 1903 | .length_ofs = 0x288, |
| 1904 | .major_mask = 0x0700, |
| 1905 | .major_shift = 8, |
| 1906 | .minor_mask = 0x003f, |
| 1907 | .minor_shift = 0, |
| 1908 | }; |
| 1909 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1910 | static const struct of_device_id omap_sham_of_match[] = { |
| 1911 | { |
| 1912 | .compatible = "ti,omap2-sham", |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1913 | .data = &omap_sham_pdata_omap2, |
| 1914 | }, |
| 1915 | { |
Pali Rohár | eddca85 | 2015-02-26 14:49:53 +0100 | [diff] [blame] | 1916 | .compatible = "ti,omap3-sham", |
| 1917 | .data = &omap_sham_pdata_omap2, |
| 1918 | }, |
| 1919 | { |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1920 | .compatible = "ti,omap4-sham", |
| 1921 | .data = &omap_sham_pdata_omap4, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1922 | }, |
Lokesh Vutla | 7d7c704 | 2013-07-26 12:29:15 +0530 | [diff] [blame] | 1923 | { |
| 1924 | .compatible = "ti,omap5-sham", |
| 1925 | .data = &omap_sham_pdata_omap5, |
| 1926 | }, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1927 | {}, |
| 1928 | }; |
| 1929 | MODULE_DEVICE_TABLE(of, omap_sham_of_match); |
| 1930 | |
| 1931 | static int omap_sham_get_res_of(struct omap_sham_dev *dd, |
| 1932 | struct device *dev, struct resource *res) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1933 | { |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1934 | struct device_node *node = dev->of_node; |
| 1935 | const struct of_device_id *match; |
| 1936 | int err = 0; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1937 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1938 | match = of_match_device(of_match_ptr(omap_sham_of_match), dev); |
| 1939 | if (!match) { |
| 1940 | dev_err(dev, "no compatible OF match\n"); |
| 1941 | err = -EINVAL; |
| 1942 | goto err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1943 | } |
Samu Onkalo | 584db6a | 2010-09-03 19:20:19 +0800 | [diff] [blame] | 1944 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1945 | err = of_address_to_resource(node, 0, res); |
| 1946 | if (err < 0) { |
| 1947 | dev_err(dev, "can't translate OF node address\n"); |
| 1948 | err = -EINVAL; |
| 1949 | goto err; |
| 1950 | } |
| 1951 | |
Thierry Reding | f757849 | 2013-09-18 15:24:44 +0200 | [diff] [blame] | 1952 | dd->irq = irq_of_parse_and_map(node, 0); |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1953 | if (!dd->irq) { |
| 1954 | dev_err(dev, "can't translate OF irq value\n"); |
| 1955 | err = -EINVAL; |
| 1956 | goto err; |
| 1957 | } |
| 1958 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 1959 | dd->pdata = match->data; |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1960 | |
| 1961 | err: |
| 1962 | return err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1963 | } |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1964 | #else |
Mark A. Greer | c3c3b32 | 2013-01-15 13:53:02 -0700 | [diff] [blame] | 1965 | static const struct of_device_id omap_sham_of_match[] = { |
| 1966 | {}, |
| 1967 | }; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1968 | |
Mark A. Greer | c3c3b32 | 2013-01-15 13:53:02 -0700 | [diff] [blame] | 1969 | 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] | 1970 | struct device *dev, struct resource *res) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1971 | { |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1972 | return -EINVAL; |
| 1973 | } |
| 1974 | #endif |
| 1975 | |
| 1976 | static int omap_sham_get_res_pdev(struct omap_sham_dev *dd, |
| 1977 | struct platform_device *pdev, struct resource *res) |
| 1978 | { |
| 1979 | struct device *dev = &pdev->dev; |
| 1980 | struct resource *r; |
| 1981 | int err = 0; |
| 1982 | |
| 1983 | /* Get the base address */ |
| 1984 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1985 | if (!r) { |
| 1986 | dev_err(dev, "no MEM resource info\n"); |
| 1987 | err = -ENODEV; |
| 1988 | goto err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 1989 | } |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 1990 | memcpy(res, r, sizeof(*res)); |
| 1991 | |
| 1992 | /* Get the IRQ */ |
| 1993 | dd->irq = platform_get_irq(pdev, 0); |
| 1994 | if (dd->irq < 0) { |
| 1995 | dev_err(dev, "no IRQ resource info\n"); |
| 1996 | err = dd->irq; |
| 1997 | goto err; |
| 1998 | } |
| 1999 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 2000 | /* Only OMAP2/3 can be non-DT */ |
| 2001 | dd->pdata = &omap_sham_pdata_omap2; |
| 2002 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 2003 | err: |
| 2004 | return err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2005 | } |
| 2006 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2007 | static int omap_sham_probe(struct platform_device *pdev) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2008 | { |
| 2009 | struct omap_sham_dev *dd; |
| 2010 | struct device *dev = &pdev->dev; |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 2011 | struct resource res; |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 2012 | dma_cap_mask_t mask; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2013 | int err, i, j; |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 2014 | u32 rev; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2015 | |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 2016 | dd = devm_kzalloc(dev, sizeof(struct omap_sham_dev), GFP_KERNEL); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2017 | if (dd == NULL) { |
| 2018 | dev_err(dev, "unable to alloc data struct.\n"); |
| 2019 | err = -ENOMEM; |
| 2020 | goto data_err; |
| 2021 | } |
| 2022 | dd->dev = dev; |
| 2023 | platform_set_drvdata(pdev, dd); |
| 2024 | |
| 2025 | INIT_LIST_HEAD(&dd->list); |
| 2026 | spin_lock_init(&dd->lock); |
| 2027 | tasklet_init(&dd->done_task, omap_sham_done_task, (unsigned long)dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2028 | crypto_init_queue(&dd->queue, OMAP_SHAM_QUEUE_LENGTH); |
| 2029 | |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 2030 | err = (dev->of_node) ? omap_sham_get_res_of(dd, dev, &res) : |
| 2031 | omap_sham_get_res_pdev(dd, pdev, &res); |
| 2032 | if (err) |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 2033 | goto data_err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2034 | |
Laurent Navet | 3086228 | 2013-05-02 14:00:38 +0200 | [diff] [blame] | 2035 | dd->io_base = devm_ioremap_resource(dev, &res); |
| 2036 | if (IS_ERR(dd->io_base)) { |
| 2037 | err = PTR_ERR(dd->io_base); |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 2038 | goto data_err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2039 | } |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 2040 | dd->phys_base = res.start; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2041 | |
Lokesh Vutla | 0de9c38 | 2013-07-26 12:29:16 +0530 | [diff] [blame] | 2042 | err = devm_request_irq(dev, dd->irq, dd->pdata->intr_hdlr, |
| 2043 | IRQF_TRIGGER_NONE, dev_name(dev), dd); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2044 | if (err) { |
Lokesh Vutla | 0de9c38 | 2013-07-26 12:29:16 +0530 | [diff] [blame] | 2045 | dev_err(dev, "unable to request irq %d, err = %d\n", |
| 2046 | dd->irq, err); |
Lokesh Vutla | 7a7e4b7 | 2013-07-26 12:29:17 +0530 | [diff] [blame] | 2047 | goto data_err; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2048 | } |
| 2049 | |
Mark A. Greer | dfd061d | 2012-12-21 10:04:04 -0700 | [diff] [blame] | 2050 | dma_cap_zero(mask); |
| 2051 | dma_cap_set(DMA_SLAVE, mask); |
| 2052 | |
Peter Ujfalusi | dbe2462 | 2016-04-29 16:03:41 +0300 | [diff] [blame] | 2053 | dd->dma_lch = dma_request_chan(dev, "rx"); |
| 2054 | if (IS_ERR(dd->dma_lch)) { |
| 2055 | err = PTR_ERR(dd->dma_lch); |
| 2056 | if (err == -EPROBE_DEFER) |
| 2057 | goto data_err; |
| 2058 | |
Lokesh Vutla | b8411ccd | 2013-08-20 20:32:34 +0530 | [diff] [blame] | 2059 | dd->polling_mode = 1; |
| 2060 | dev_dbg(dev, "using polling mode instead of dma\n"); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2061 | } |
| 2062 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 2063 | dd->flags |= dd->pdata->flags; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2064 | |
Tero Kristo | e93f767 | 2016-06-22 16:23:34 +0300 | [diff] [blame] | 2065 | pm_runtime_use_autosuspend(dev); |
| 2066 | pm_runtime_set_autosuspend_delay(dev, DEFAULT_AUTOSUSPEND_DELAY); |
| 2067 | |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 2068 | pm_runtime_enable(dev); |
Vutla, Lokesh | b0a3d89 | 2015-03-31 09:52:24 +0530 | [diff] [blame] | 2069 | pm_runtime_irq_safe(dev); |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 2070 | |
| 2071 | err = pm_runtime_get_sync(dev); |
| 2072 | if (err < 0) { |
| 2073 | dev_err(dev, "failed to get sync: %d\n", err); |
| 2074 | goto err_pm; |
| 2075 | } |
| 2076 | |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 2077 | rev = omap_sham_read(dd, SHA_REG_REV(dd)); |
| 2078 | pm_runtime_put_sync(&pdev->dev); |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 2079 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2080 | dev_info(dev, "hw accel on OMAP rev %u.%u\n", |
Mark A. Greer | 0d373d6 | 2012-12-21 10:04:08 -0700 | [diff] [blame] | 2081 | (rev & dd->pdata->major_mask) >> dd->pdata->major_shift, |
| 2082 | (rev & dd->pdata->minor_mask) >> dd->pdata->minor_shift); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2083 | |
| 2084 | spin_lock(&sham.lock); |
| 2085 | list_add_tail(&dd->list, &sham.dev_list); |
| 2086 | spin_unlock(&sham.lock); |
| 2087 | |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2088 | for (i = 0; i < dd->pdata->algs_info_size; i++) { |
| 2089 | for (j = 0; j < dd->pdata->algs_info[i].size; j++) { |
Tero Kristo | 99a7fff | 2016-09-19 18:22:12 +0300 | [diff] [blame] | 2090 | struct ahash_alg *alg; |
| 2091 | |
| 2092 | alg = &dd->pdata->algs_info[i].algs_list[j]; |
| 2093 | alg->export = omap_sham_export; |
| 2094 | alg->import = omap_sham_import; |
Tero Kristo | a84d351 | 2016-09-19 18:22:18 +0300 | [diff] [blame] | 2095 | alg->halg.statesize = sizeof(struct omap_sham_reqctx) + |
| 2096 | BUFLEN; |
Tero Kristo | 99a7fff | 2016-09-19 18:22:12 +0300 | [diff] [blame] | 2097 | err = crypto_register_ahash(alg); |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2098 | if (err) |
| 2099 | goto err_algs; |
| 2100 | |
| 2101 | dd->pdata->algs_info[i].registered++; |
| 2102 | } |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | return 0; |
| 2106 | |
| 2107 | err_algs: |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2108 | for (i = dd->pdata->algs_info_size - 1; i >= 0; i--) |
| 2109 | for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) |
| 2110 | crypto_unregister_ahash( |
| 2111 | &dd->pdata->algs_info[i].algs_list[j]); |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 2112 | err_pm: |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 2113 | pm_runtime_disable(dev); |
Dan Carpenter | d462e32 | 2016-05-18 13:39:05 +0300 | [diff] [blame] | 2114 | if (!dd->polling_mode) |
Mark A. Greer | f13ab86 | 2013-11-12 13:12:27 -0700 | [diff] [blame] | 2115 | dma_release_channel(dd->dma_lch); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2116 | data_err: |
| 2117 | dev_err(dev, "initialization failed.\n"); |
| 2118 | |
| 2119 | return err; |
| 2120 | } |
| 2121 | |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 2122 | static int omap_sham_remove(struct platform_device *pdev) |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2123 | { |
| 2124 | static struct omap_sham_dev *dd; |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2125 | int i, j; |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2126 | |
| 2127 | dd = platform_get_drvdata(pdev); |
| 2128 | if (!dd) |
| 2129 | return -ENODEV; |
| 2130 | spin_lock(&sham.lock); |
| 2131 | list_del(&dd->list); |
| 2132 | spin_unlock(&sham.lock); |
Mark A. Greer | d20fb18 | 2012-12-21 10:04:09 -0700 | [diff] [blame] | 2133 | for (i = dd->pdata->algs_info_size - 1; i >= 0; i--) |
| 2134 | for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) |
| 2135 | crypto_unregister_ahash( |
| 2136 | &dd->pdata->algs_info[i].algs_list[j]); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2137 | tasklet_kill(&dd->done_task); |
Mark A. Greer | b359f03 | 2012-12-21 10:04:02 -0700 | [diff] [blame] | 2138 | pm_runtime_disable(&pdev->dev); |
Mark A. Greer | f13ab86 | 2013-11-12 13:12:27 -0700 | [diff] [blame] | 2139 | |
Peter Ujfalusi | dbe2462 | 2016-04-29 16:03:41 +0300 | [diff] [blame] | 2140 | if (!dd->polling_mode) |
Mark A. Greer | f13ab86 | 2013-11-12 13:12:27 -0700 | [diff] [blame] | 2141 | dma_release_channel(dd->dma_lch); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2142 | |
| 2143 | return 0; |
| 2144 | } |
| 2145 | |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2146 | #ifdef CONFIG_PM_SLEEP |
| 2147 | static int omap_sham_suspend(struct device *dev) |
| 2148 | { |
| 2149 | pm_runtime_put_sync(dev); |
| 2150 | return 0; |
| 2151 | } |
| 2152 | |
| 2153 | static int omap_sham_resume(struct device *dev) |
| 2154 | { |
Pali Rohár | 604c310 | 2015-03-08 11:01:01 +0100 | [diff] [blame] | 2155 | int err = pm_runtime_get_sync(dev); |
| 2156 | if (err < 0) { |
| 2157 | dev_err(dev, "failed to get sync: %d\n", err); |
| 2158 | return err; |
| 2159 | } |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2160 | return 0; |
| 2161 | } |
| 2162 | #endif |
| 2163 | |
Jingoo Han | ae12fe2 | 2014-02-27 20:33:32 +0900 | [diff] [blame] | 2164 | 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] | 2165 | |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2166 | static struct platform_driver omap_sham_driver = { |
| 2167 | .probe = omap_sham_probe, |
| 2168 | .remove = omap_sham_remove, |
| 2169 | .driver = { |
| 2170 | .name = "omap-sham", |
Mark A. Greer | 3b3f440 | 2012-12-21 10:04:03 -0700 | [diff] [blame] | 2171 | .pm = &omap_sham_pm_ops, |
Mark A. Greer | 03feec9 | 2012-12-21 10:04:06 -0700 | [diff] [blame] | 2172 | .of_match_table = omap_sham_of_match, |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2173 | }, |
| 2174 | }; |
| 2175 | |
Sachin Kamat | 0261370 | 2013-03-04 15:09:43 +0530 | [diff] [blame] | 2176 | module_platform_driver(omap_sham_driver); |
Dmitry Kasatkin | 8628e7c | 2010-05-03 11:10:59 +0800 | [diff] [blame] | 2177 | |
| 2178 | MODULE_DESCRIPTION("OMAP SHA1/MD5 hw acceleration support."); |
| 2179 | MODULE_LICENSE("GPL v2"); |
| 2180 | MODULE_AUTHOR("Dmitry Kasatkin"); |
Joni Lapilainen | 718249d | 2013-10-26 23:00:41 +0200 | [diff] [blame] | 2181 | MODULE_ALIAS("platform:omap-sham"); |