Release 4.10 drivers/crypto/omap-aes.c
/*
* Cryptographic API.
*
* Support for OMAP AES HW acceleration.
*
* Copyright (c) 2010 Nokia Corporation
* Author: Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
* Copyright (c) 2011 Texas Instruments Incorporated
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
*/
#define pr_fmt(fmt) "%20s: " fmt, __func__
#define prn(num) pr_debug(#num "=%d\n", num)
#define prx(num) pr_debug(#num "=%x\n", num)
#include <linux/err.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/crypto.h>
#include <linux/interrupt.h>
#include <crypto/scatterwalk.h>
#include <crypto/aes.h>
#include <crypto/engine.h>
#include <crypto/internal/skcipher.h>
#define DST_MAXBURST 4
#define DMA_MIN (DST_MAXBURST * sizeof(u32))
#define _calc_walked(inout) (dd->inout##_walk.offset - dd->inout##_sg->offset)
/* OMAP TRM gives bitfields as start:end, where start is the higher bit
number. For example 7:0 */
#define FLD_MASK(start, end) (((1 << ((start) - (end) + 1)) - 1) << (end))
#define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
#define AES_REG_KEY(dd, x) ((dd)->pdata->key_ofs - \
((x ^ 0x01) * 0x04))
#define AES_REG_IV(dd, x) ((dd)->pdata->iv_ofs + ((x) * 0x04))
#define AES_REG_CTRL(dd) ((dd)->pdata->ctrl_ofs)
#define AES_REG_CTRL_CTR_WIDTH_MASK GENMASK(8, 7)
#define AES_REG_CTRL_CTR_WIDTH_32 0
#define AES_REG_CTRL_CTR_WIDTH_64 BIT(7)
#define AES_REG_CTRL_CTR_WIDTH_96 BIT(8)
#define AES_REG_CTRL_CTR_WIDTH_128 GENMASK(8, 7)
#define AES_REG_CTRL_CTR BIT(6)
#define AES_REG_CTRL_CBC BIT(5)
#define AES_REG_CTRL_KEY_SIZE GENMASK(4, 3)
#define AES_REG_CTRL_DIRECTION BIT(2)
#define AES_REG_CTRL_INPUT_READY BIT(1)
#define AES_REG_CTRL_OUTPUT_READY BIT(0)
#define AES_REG_CTRL_MASK GENMASK(24, 2)
#define AES_REG_DATA_N(dd, x) ((dd)->pdata->data_ofs + ((x) * 0x04))
#define AES_REG_REV(dd) ((dd)->pdata->rev_ofs)
#define AES_REG_MASK(dd) ((dd)->pdata->mask_ofs)
#define AES_REG_MASK_SIDLE BIT(6)
#define AES_REG_MASK_START BIT(5)
#define AES_REG_MASK_DMA_OUT_EN BIT(3)
#define AES_REG_MASK_DMA_IN_EN BIT(2)
#define AES_REG_MASK_SOFTRESET BIT(1)
#define AES_REG_AUTOIDLE BIT(0)
#define AES_REG_LENGTH_N(x) (0x54 + ((x) * 0x04))
#define AES_REG_IRQ_STATUS(dd) ((dd)->pdata->irq_status_ofs)
#define AES_REG_IRQ_ENABLE(dd) ((dd)->pdata->irq_enable_ofs)
#define AES_REG_IRQ_DATA_IN BIT(1)
#define AES_REG_IRQ_DATA_OUT BIT(2)
#define DEFAULT_TIMEOUT (5*HZ)
#define DEFAULT_AUTOSUSPEND_DELAY 1000
#define FLAGS_MODE_MASK 0x000f
#define FLAGS_ENCRYPT BIT(0)
#define FLAGS_CBC BIT(1)
#define FLAGS_GIV BIT(2)
#define FLAGS_CTR BIT(3)
#define FLAGS_INIT BIT(4)
#define FLAGS_FAST BIT(5)
#define FLAGS_BUSY BIT(6)
#define AES_BLOCK_WORDS (AES_BLOCK_SIZE >> 2)
struct omap_aes_ctx {
struct omap_aes_dev *dd;
int keylen;
u32 key[AES_KEYSIZE_256 / sizeof(u32)];
unsigned long flags;
struct crypto_skcipher *fallback;
};
struct omap_aes_reqctx {
unsigned long mode;
};
#define OMAP_AES_QUEUE_LENGTH 1
#define OMAP_AES_CACHE_SIZE 0
struct omap_aes_algs_info {
struct crypto_alg *algs_list;
unsigned int size;
unsigned int registered;
};
struct omap_aes_pdata {
struct omap_aes_algs_info *algs_info;
unsigned int algs_info_size;
void (*trigger)(struct omap_aes_dev *dd, int length);
u32 key_ofs;
u32 iv_ofs;
u32 ctrl_ofs;
u32 data_ofs;
u32 rev_ofs;
u32 mask_ofs;
u32 irq_enable_ofs;
u32 irq_status_ofs;
u32 dma_enable_in;
u32 dma_enable_out;
u32 dma_start;
u32 major_mask;
u32 major_shift;
u32 minor_mask;
u32 minor_shift;
};
struct omap_aes_dev {
struct list_head list;
unsigned long phys_base;
void __iomem *io_base;
struct omap_aes_ctx *ctx;
struct device *dev;
unsigned long flags;
int err;
struct tasklet_struct done_task;
struct ablkcipher_request *req;
struct crypto_engine *engine;
/*
* total is used by PIO mode for book keeping so introduce
* variable total_save as need it to calc page_order
*/
size_t total;
size_t total_save;
struct scatterlist *in_sg;
struct scatterlist *out_sg;
/* Buffers for copying for unaligned cases */
struct scatterlist in_sgl;
struct scatterlist out_sgl;
struct scatterlist *orig_out;
int sgs_copied;
struct scatter_walk in_walk;
struct scatter_walk out_walk;
struct dma_chan *dma_lch_in;
struct dma_chan *dma_lch_out;
int in_sg_len;
int out_sg_len;
int pio_only;
const struct omap_aes_pdata *pdata;
};
/* keep registered devices data here */
static LIST_HEAD(dev_list);
static DEFINE_SPINLOCK(list_lock);
#ifdef DEBUG
#define omap_aes_read(dd, offset) \
({ \
int _read_ret; \
_read_ret = __raw_readl(dd->io_base + offset); \
pr_debug("omap_aes_read(" #offset "=%#x)= %#x\n", \
offset, _read_ret); \
_read_ret; \
})
#else
static inline u32 omap_aes_read(struct omap_aes_dev *dd, u32 offset)
{
return __raw_readl(dd->io_base + offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
#endif
#ifdef DEBUG
#define omap_aes_write(dd, offset, value) \
do { \
pr_debug("omap_aes_write(" #offset "=%#x) value=%#x\n", \
offset, value); \
__raw_writel(value, dd->io_base + offset); \
} while (0)
#else
static inline void omap_aes_write(struct omap_aes_dev *dd, u32 offset,
u32 value)
{
__raw_writel(value, dd->io_base + offset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
#endif
static inline void omap_aes_write_mask(struct omap_aes_dev *dd, u32 offset,
u32 value, u32 mask)
{
u32 val;
val = omap_aes_read(dd, offset);
val &= ~mask;
val |= value;
omap_aes_write(dd, offset, val);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 51 | 100.00% | 1 | 100.00% |
| Total | 51 | 100.00% | 1 | 100.00% |
static void omap_aes_write_n(struct omap_aes_dev *dd, u32 offset,
u32 *value, int count)
{
for (; count--; value++, offset += 4)
omap_aes_write(dd, offset, *value);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 44 | 100.00% | 1 | 100.00% |
| Total | 44 | 100.00% | 1 | 100.00% |
static int omap_aes_hw_init(struct omap_aes_dev *dd)
{
int err;
if (!(dd->flags & FLAGS_INIT)) {
dd->flags |= FLAGS_INIT;
dd->err = 0;
}
err = pm_runtime_get_sync(dd->dev);
if (err < 0) {
dev_err(dd->dev, "failed to get sync: %d\n", err);
return err;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 39 | 53.42% | 3 | 75.00% |
| tero kristo | tero kristo | 34 | 46.58% | 1 | 25.00% |
| Total | 73 | 100.00% | 4 | 100.00% |
static int omap_aes_write_ctrl(struct omap_aes_dev *dd)
{
unsigned int key32;
int i, err;
u32 val;
err = omap_aes_hw_init(dd);
if (err)
return err;
key32 = dd->ctx->keylen / sizeof(u32);
/* it seems a key should always be set even if it has not changed */
for (i = 0; i < key32; i++) {
omap_aes_write(dd, AES_REG_KEY(dd, i),
__le32_to_cpu(dd->ctx->key[i]));
}
if ((dd->flags & (FLAGS_CBC | FLAGS_CTR)) && dd->req->info)
omap_aes_write_n(dd, AES_REG_IV(dd, 0), dd->req->info, 4);
val = FLD_VAL(((dd->ctx->keylen >> 3) - 1), 4, 3);
if (dd->flags & FLAGS_CBC)
val |= AES_REG_CTRL_CBC;
if (dd->flags & FLAGS_CTR)
val |= AES_REG_CTRL_CTR | AES_REG_CTRL_CTR_WIDTH_128;
if (dd->flags & FLAGS_ENCRYPT)
val |= AES_REG_CTRL_DIRECTION;
omap_aes_write_mask(dd, AES_REG_CTRL(dd), val, AES_REG_CTRL_MASK);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 182 | 87.50% | 3 | 42.86% |
| mark a. greer | mark a. greer | 24 | 11.54% | 2 | 28.57% |
| lokesh vutla | lokesh vutla | 1 | 0.48% | 1 | 14.29% |
| joel fernandes | joel fernandes | 1 | 0.48% | 1 | 14.29% |
| Total | 208 | 100.00% | 7 | 100.00% |
static void omap_aes_dma_trigger_omap2(struct omap_aes_dev *dd, int length)
{
u32 mask, val;
val = dd->pdata->dma_start;
if (dd->dma_lch_out != NULL)
val |= dd->pdata->dma_enable_out;
if (dd->dma_lch_in != NULL)
val |= dd->pdata->dma_enable_in;
mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |
dd->pdata->dma_start;
omap_aes_write_mask(dd, AES_REG_MASK(dd), val, mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 93 | 100.00% | 1 | 100.00% |
| Total | 93 | 100.00% | 1 | 100.00% |
static void omap_aes_dma_trigger_omap4(struct omap_aes_dev *dd, int length)
{
omap_aes_write(dd, AES_REG_LENGTH_N(0), length);
omap_aes_write(dd, AES_REG_LENGTH_N(1), 0);
omap_aes_dma_trigger_omap2(dd, length);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 45 | 100.00% | 1 | 100.00% |
| Total | 45 | 100.00% | 1 | 100.00% |
static void omap_aes_dma_stop(struct omap_aes_dev *dd)
{
u32 mask;
mask = dd->pdata->dma_enable_out | dd->pdata->dma_enable_in |
dd->pdata->dma_start;
omap_aes_write_mask(dd, AES_REG_MASK(dd), 0, mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 48 | 100.00% | 1 | 100.00% |
| Total | 48 | 100.00% | 1 | 100.00% |
static struct omap_aes_dev *omap_aes_find_dev(struct omap_aes_ctx *ctx)
{
struct omap_aes_dev *dd;
spin_lock_bh(&list_lock);
dd = list_first_entry(&dev_list, struct omap_aes_dev, list);
list_move_tail(&dd->list, &dev_list);
ctx->dd = dd;
spin_unlock_bh(&list_lock);
return dd;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 46 | 73.02% | 1 | 50.00% |
| lokesh vutla | lokesh vutla | 17 | 26.98% | 1 | 50.00% |
| Total | 63 | 100.00% | 2 | 100.00% |
static void omap_aes_dma_out_callback(void *data)
{
struct omap_aes_dev *dd = data;
/* dma_lch_out - completed */
tasklet_schedule(&dd->done_task);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
static int omap_aes_dma_init(struct omap_aes_dev *dd)
{
int err;
dd->dma_lch_out = NULL;
dd->dma_lch_in = NULL;
dd->dma_lch_in = dma_request_chan(dd->dev, "rx");
if (IS_ERR(dd->dma_lch_in)) {
dev_err(dd->dev, "Unable to request in DMA channel\n");
return PTR_ERR(dd->dma_lch_in);
}
dd->dma_lch_out = dma_request_chan(dd->dev, "tx");
if (IS_ERR(dd->dma_lch_out)) {
dev_err(dd->dev, "Unable to request out DMA channel\n");
err = PTR_ERR(dd->dma_lch_out);
goto err_dma_out;
}
return 0;
err_dma_out:
dma_release_channel(dd->dma_lch_in);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 81 | 63.78% | 2 | 50.00% |
| peter ujfalusi | peter ujfalusi | 25 | 19.69% | 1 | 25.00% |
| dmitry kasatkin | dmitry kasatkin | 21 | 16.54% | 1 | 25.00% |
| Total | 127 | 100.00% | 4 | 100.00% |
static void omap_aes_dma_cleanup(struct omap_aes_dev *dd)
{
if (dd->pio_only)
return;
dma_release_channel(dd->dma_lch_out);
dma_release_channel(dd->dma_lch_in);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 14 | 43.75% | 1 | 33.33% |
| dmitry kasatkin | dmitry kasatkin | 11 | 34.38% | 1 | 33.33% |
| peter ujfalusi | peter ujfalusi | 7 | 21.88% | 1 | 33.33% |
| Total | 32 | 100.00% | 3 | 100.00% |
static void sg_copy_buf(void *buf, struct scatterlist *sg,
unsigned int start, unsigned int nbytes, int out)
{
struct scatter_walk walk;
if (!nbytes)
return;
scatterwalk_start(&walk, sg);
scatterwalk_advance(&walk, start);
scatterwalk_copychunks(buf, &walk, nbytes, out);
scatterwalk_done(&walk, out, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 74 | 100.00% | 1 | 100.00% |
| Total | 74 | 100.00% | 1 | 100.00% |
static int omap_aes_crypt_dma(struct crypto_tfm *tfm,
struct scatterlist *in_sg, struct scatterlist *out_sg,
int in_sg_len, int out_sg_len)
{
struct omap_aes_ctx *ctx = crypto_tfm_ctx(tfm);
struct omap_aes_dev *dd = ctx->dd;
struct dma_async_tx_descriptor *tx_in, *tx_out;
struct dma_slave_config cfg;
int ret;
if (dd->pio_only) {
scatterwalk_start(&dd->in_walk, dd->in_sg);
scatterwalk_start(&dd->out_walk, dd->out_sg);
/* Enable DATAIN interrupt and let it take
care of the rest */
omap_aes_write(dd, AES_REG_IRQ_ENABLE(dd), 0x2);
return 0;
}
dma_sync_sg_for_device(dd->dev, dd->in_sg, in_sg_len, DMA_TO_DEVICE);
memset(&cfg, 0, sizeof(cfg));
cfg.src_addr = dd->phys_base + AES_REG_DATA_N(dd, 0);
cfg.dst_addr = dd->phys_base + AES_REG_DATA_N(dd, 0);
cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
cfg.src_maxburst = DST_MAXBURST;
cfg.dst_maxburst = DST_MAXBURST;
/* IN */
ret = dmaengine_slave_config(dd->dma_lch_in, &cfg);
if (ret) {
dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",
ret);
return ret;
}
tx_in = dmaengine_prep_slave_sg(dd->dma_lch_in, in_sg, in_sg_len,
DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!tx_in) {
dev_err(dd->dev, "IN prep_slave_sg() failed\n");
return -EINVAL;
}
/* No callback necessary */
tx_in->callback_param = dd;
/* OUT */
ret = dmaengine_slave_config(dd->dma_lch_out, &cfg);
if (ret) {
dev_err(dd->dev, "can't configure OUT dmaengine slave: %d\n",
ret);
return ret;
}
tx_out = dmaengine_prep_slave_sg(dd->dma_lch_out, out_sg, out_sg_len,
DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!tx_out) {
dev_err(dd->dev, "OUT prep_slave_sg() failed\n");
return -EINVAL;
}
tx_out->callback = omap_aes_dma_out_callback;
tx_out->callback_param = dd;
dmaengine_submit(tx_in);
dmaengine_submit(tx_out);
dma_async_issue_pending(dd->dma_lch_in);
dma_async_issue_pending(dd->dma_lch_out);
/* start DMA */
dd->pdata->trigger(dd, dd->total);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 289 | 73.16% | 3 | 37.50% |
| joel fernandes | joel fernandes | 74 | 18.73% | 3 | 37.50% |
| dmitry kasatkin | dmitry kasatkin | 32 | 8.10% | 2 | 25.00% |
| Total | 395 | 100.00% | 8 | 100.00% |
static int omap_aes_crypt_dma_start(struct omap_aes_dev *dd)
{
struct crypto_tfm *tfm = crypto_ablkcipher_tfm(
crypto_ablkcipher_reqtfm(dd->req));
int err;
pr_debug("total: %d\n", dd->total);
if (!dd->pio_only) {
err = dma_map_sg(dd->dev, dd->in_sg, dd->in_sg_len,
DMA_TO_DEVICE);
if (!err) {
dev_err(dd->dev, "dma_map_sg() error\n");
return -EINVAL;
}
err = dma_map_sg(dd->dev, dd->out_sg, dd->out_sg_len,
DMA_FROM_DEVICE);
if (!err) {
dev_err(dd->dev, "dma_map_sg() error\n");
return -EINVAL;
}
}
err = omap_aes_crypt_dma(tfm, dd->in_sg, dd->out_sg, dd->in_sg_len,
dd->out_sg_len);
if (err && !dd->pio_only) {
dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);
dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,
DMA_FROM_DEVICE);
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| joel fernandes | joel fernandes | 98 | 50.00% | 2 | 40.00% |
| dmitry kasatkin | dmitry kasatkin | 69 | 35.20% | 2 | 40.00% |
| mark a. greer | mark a. greer | 29 | 14.80% | 1 | 20.00% |
| Total | 196 | 100.00% | 5 | 100.00% |
static void omap_aes_finish_req(struct omap_aes_dev *dd, int err)
{
struct ablkcipher_request *req = dd->req;
pr_debug("err: %d\n", err);
crypto_finalize_cipher_request(dd->engine, req, err);
pm_runtime_mark_last_busy(dd->dev);
pm_runtime_put_autosuspend(dd->dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 37 | 67.27% | 3 | 50.00% |
| tero kristo | tero kristo | 14 | 25.45% | 1 | 16.67% |
| baolin wang | baolin wang | 3 | 5.45% | 1 | 16.67% |
| labbe corentin | labbe corentin | 1 | 1.82% | 1 | 16.67% |
| Total | 55 | 100.00% | 6 | 100.00% |
static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd)
{
pr_debug("total: %d\n", dd->total);
omap_aes_dma_stop(dd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 23 | 82.14% | 1 | 25.00% |
| joel fernandes | joel fernandes | 3 | 10.71% | 1 | 25.00% |
| mark a. greer | mark a. greer | 1 | 3.57% | 1 | 25.00% |
| rahul pathak | rahul pathak | 1 | 3.57% | 1 | 25.00% |
| Total | 28 | 100.00% | 4 | 100.00% |
static int omap_aes_check_aligned(struct scatterlist *sg, int total)
{
int len = 0;
if (!IS_ALIGNED(total, AES_BLOCK_SIZE))
return -EINVAL;
while (sg) {
if (!IS_ALIGNED(sg->offset, 4))
return -1;
if (!IS_ALIGNED(sg->length, AES_BLOCK_SIZE))
return -1;
len += sg->length;
sg = sg_next(sg);
}
if (len != total)
return -1;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| joel fernandes | joel fernandes | 58 | 59.79% | 1 | 25.00% |
| lokesh vutla | lokesh vutla | 38 | 39.18% | 2 | 50.00% |
| sachin kamat | sachin kamat | 1 | 1.03% | 1 | 25.00% |
| Total | 97 | 100.00% | 4 | 100.00% |
static int omap_aes_copy_sgs(struct omap_aes_dev *dd)
{
void *buf_in, *buf_out;
int pages, total;
total = ALIGN(dd->total, AES_BLOCK_SIZE);
pages = get_order(total);
buf_in = (void *)__get_free_pages(GFP_ATOMIC, pages);
buf_out = (void *)__get_free_pages(GFP_ATOMIC, pages);
if (!buf_in || !buf_out) {
pr_err("Couldn't allocated pages for unaligned cases.\n");
return -1;
}
dd->orig_out = dd->out_sg;
sg_copy_buf(buf_in, dd->in_sg, 0, dd->total, 0);
sg_init_table(&dd->in_sgl, 1);
sg_set_buf(&dd->in_sgl, buf_in, total);
dd->in_sg = &dd->in_sgl;
dd->in_sg_len = 1;
sg_init_table(&dd->out_sgl, 1);
sg_set_buf(&dd->out_sgl, buf_out, total);
dd->out_sg = &dd->out_sgl;
dd->out_sg_len = 1;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| joel fernandes | joel fernandes | 137 | 72.87% | 2 | 33.33% |
| dmitry kasatkin | dmitry kasatkin | 25 | 13.30% | 1 | 16.67% |
| lokesh vutla | lokesh vutla | 13 | 6.91% | 1 | 16.67% |
| herbert xu | herbert xu | 12 | 6.38% | 1 | 16.67% |
| sachin kamat | sachin kamat | 1 | 0.53% | 1 | 16.67% |
| Total | 188 | 100.00% | 6 | 100.00% |
static int omap_aes_handle_queue(struct omap_aes_dev *dd,
struct ablkcipher_request *req)
{
if (req)
return crypto_transfer_cipher_request_to_engine(dd->engine, req);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 28 | 84.85% | 3 | 60.00% |
| baolin wang | baolin wang | 4 | 12.12% | 1 | 20.00% |
| labbe corentin | labbe corentin | 1 | 3.03% | 1 | 20.00% |
| Total | 33 | 100.00% | 5 | 100.00% |
static int omap_aes_prepare_req(struct crypto_engine *engine,
struct ablkcipher_request *req)
{
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req));
struct omap_aes_dev *dd = ctx->dd;
struct omap_aes_reqctx *rctx;
if (!dd)
return -ENODEV;
/* assign new request to device */
dd->req = req;
dd->total = req->nbytes;
dd->total_save = req->nbytes;
dd->in_sg = req->src;
dd->out_sg = req->dst;
dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total);
if (dd->in_sg_len < 0)
return dd->in_sg_len;
dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total);
if (dd->out_sg_len < 0)
return dd->out_sg_len;
if (omap_aes_check_aligned(dd->in_sg, dd->total) ||
omap_aes_check_aligned(dd->out_sg, dd->total)) {
if (omap_aes_copy_sgs(dd))
pr_err("Failed to copy SGs for unaligned cases\n");
dd->sgs_copied = 1;
} else {
dd->sgs_copied = 0;
}
rctx = ablkcipher_request_ctx(req);
ctx = crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req));
rctx->mode &= FLAGS_MODE_MASK;
dd->flags = (dd->flags & ~FLAGS_MODE_MASK) | rctx->mode;
dd->ctx = ctx;
ctx->dd = dd;
return omap_aes_write_ctrl(dd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 97 | 37.60% | 3 | 37.50% |
| herbert xu | herbert xu | 56 | 21.71% | 1 | 12.50% |
| joel fernandes | joel fernandes | 53 | 20.54% | 1 | 12.50% |
| baolin wang | baolin wang | 42 | 16.28% | 1 | 12.50% |
| lokesh vutla | lokesh vutla | 10 | 3.88% | 2 | 25.00% |
| Total | 258 | 100.00% | 8 | 100.00% |
static int omap_aes_crypt_req(struct crypto_engine *engine,
struct ablkcipher_request *req)
{
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req));
struct omap_aes_dev *dd = ctx->dd;
if (!dd)
return -ENODEV;
return omap_aes_crypt_dma_start(dd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| baolin wang | baolin wang | 41 | 77.36% | 1 | 25.00% |
| dmitry kasatkin | dmitry kasatkin | 10 | 18.87% | 2 | 50.00% |
| lokesh vutla | lokesh vutla | 2 | 3.77% | 1 | 25.00% |
| Total | 53 | 100.00% | 4 | 100.00% |
static void omap_aes_done_task(unsigned long data)
{
struct omap_aes_dev *dd = (struct omap_aes_dev *)data;
void *buf_in, *buf_out;
int pages, len;
pr_debug("enter done_task\n");
if (!dd->pio_only) {
dma_sync_sg_for_device(dd->dev, dd->out_sg, dd->out_sg_len,
DMA_FROM_DEVICE);
dma_unmap_sg(dd->dev, dd->in_sg, dd->in_sg_len, DMA_TO_DEVICE);
dma_unmap_sg(dd->dev, dd->out_sg, dd->out_sg_len,
DMA_FROM_DEVICE);
omap_aes_crypt_dma_stop(dd);
}
if (dd->sgs_copied) {
buf_in = sg_virt(&dd->in_sgl);
buf_out = sg_virt(&dd->out_sgl);
sg_copy_buf(buf_out, dd->orig_out, 0, dd->total_save, 1);
len = ALIGN(dd->total_save, AES_BLOCK_SIZE);
pages = get_order(len);
free_pages((unsigned long)buf_in, pages);
free_pages((unsigned long)buf_out, pages);
}
omap_aes_finish_req(dd, 0);
pr_debug("exit\n");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| joel fernandes | joel fernandes | 146 | 72.64% | 4 | 57.14% |
| dmitry kasatkin | dmitry kasatkin | 42 | 20.90% | 2 | 28.57% |
| lokesh vutla | lokesh vutla | 13 | 6.47% | 1 | 14.29% |
| Total | 201 | 100.00% | 7 | 100.00% |
static int omap_aes_crypt(struct ablkcipher_request *req, unsigned long mode)
{
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req));
struct omap_aes_reqctx *rctx = ablkcipher_request_ctx(req);
struct omap_aes_dev *dd;
int ret;
pr_debug("nbytes: %d, enc: %d, cbc: %d\n", req->nbytes,
!!(mode & FLAGS_ENCRYPT),
!!(mode & FLAGS_CBC));
if (req->nbytes < 200) {
SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
skcipher_request_set_tfm(subreq, ctx->fallback);
skcipher_request_set_callback(subreq, req->base.flags, NULL,
NULL);
skcipher_request_set_crypt(subreq, req->src, req->dst,
req->nbytes, req->info);
if (mode & FLAGS_ENCRYPT)
ret = crypto_skcipher_encrypt(subreq);
else
ret = crypto_skcipher_decrypt(subreq);
skcipher_request_zero(subreq);
return ret;
}
dd = omap_aes_find_dev(ctx);
if (!dd)
return -ENODEV;
rctx->mode = mode;
return omap_aes_handle_queue(dd, req);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 98 | 50.52% | 3 | 75.00% |
| lokesh vutla | lokesh vutla | 96 | 49.48% | 1 | 25.00% |
| Total | 194 | 100.00% | 4 | 100.00% |
/* ********************** ALG API ************************************ */
static int omap_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
unsigned int keylen)
{
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
int ret;
if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_192 &&
keylen != AES_KEYSIZE_256)
return -EINVAL;
pr_debug("enter, keylen: %d\n", keylen);
memcpy(ctx->key, key, keylen);
ctx->keylen = keylen;
crypto_skcipher_clear_flags(ctx->fallback, CRYPTO_TFM_REQ_MASK);
crypto_skcipher_set_flags(ctx->fallback, tfm->base.crt_flags &
CRYPTO_TFM_REQ_MASK);
ret = crypto_skcipher_setkey(ctx->fallback, key, keylen);
if (!ret)
return 0;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 75 | 60.98% | 1 | 50.00% |
| lokesh vutla | lokesh vutla | 48 | 39.02% | 1 | 50.00% |
| Total | 123 | 100.00% | 2 | 100.00% |
static int omap_aes_ecb_encrypt(struct ablkcipher_request *req)
{
return omap_aes_crypt(req, FLAGS_ENCRYPT);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static int omap_aes_ecb_decrypt(struct ablkcipher_request *req)
{
return omap_aes_crypt(req, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static int omap_aes_cbc_encrypt(struct ablkcipher_request *req)
{
return omap_aes_crypt(req, FLAGS_ENCRYPT | FLAGS_CBC);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static int omap_aes_cbc_decrypt(struct ablkcipher_request *req)
{
return omap_aes_crypt(req, FLAGS_CBC);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static int omap_aes_ctr_encrypt(struct ablkcipher_request *req)
{
return omap_aes_crypt(req, FLAGS_ENCRYPT | FLAGS_CTR);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static int omap_aes_ctr_decrypt(struct ablkcipher_request *req)
{
return omap_aes_crypt(req, FLAGS_CTR);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static int omap_aes_cra_init(struct crypto_tfm *tfm)
{
const char *name = crypto_tfm_alg_name(tfm);
const u32 flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK;
struct omap_aes_ctx *ctx = crypto_tfm_ctx(tfm);
struct crypto_skcipher *blk;
blk = crypto_alloc_skcipher(name, 0, flags);
if (IS_ERR(blk))
return PTR_ERR(blk);
ctx->fallback = blk;
tfm->crt_ablkcipher.reqsize = sizeof(struct omap_aes_reqctx);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| lokesh vutla | lokesh vutla | 63 | 70.79% | 1 | 50.00% |
| dmitry kasatkin | dmitry kasatkin | 26 | 29.21% | 1 | 50.00% |
| Total | 89 | 100.00% | 2 | 100.00% |
static void omap_aes_cra_exit(struct crypto_tfm *tfm)
{
struct omap_aes_ctx *ctx = crypto_tfm_ctx(tfm);
if (ctx->fallback)
crypto_free_skcipher(ctx->fallback);
ctx->fallback = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| lokesh vutla | lokesh vutla | 31 | 77.50% | 1 | 50.00% |
| dmitry kasatkin | dmitry kasatkin | 9 | 22.50% | 1 | 50.00% |
| Total | 40 | 100.00% | 2 | 100.00% |
/* ********************** ALGS ************************************ */
static struct crypto_alg algs_ecb_cbc[] = {
{
.cra_name = "ecb(aes)",
.cra_driver_name = "ecb-aes-omap",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
CRYPTO_ALG_KERN_DRIVER_ONLY |
CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_aes_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = omap_aes_cra_init,
.cra_exit = omap_aes_cra_exit,
.cra_u.ablkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.setkey = omap_aes_setkey,
.encrypt = omap_aes_ecb_encrypt,
.decrypt = omap_aes_ecb_decrypt,
}
},
{
.cra_name = "cbc(aes)",
.cra_driver_name = "cbc-aes-omap",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
CRYPTO_ALG_KERN_DRIVER_ONLY |
CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_aes_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = omap_aes_cra_init,
.cra_exit = omap_aes_cra_exit,
.cra_u.ablkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
.setkey = omap_aes_setkey,
.encrypt = omap_aes_cbc_encrypt,
.decrypt = omap_aes_cbc_decrypt,
}
}
};
static struct crypto_alg algs_ctr[] = {
{
.cra_name = "ctr(aes)",
.cra_driver_name = "ctr-aes-omap",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
CRYPTO_ALG_KERN_DRIVER_ONLY |
CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct omap_aes_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = omap_aes_cra_init,
.cra_exit = omap_aes_cra_exit,
.cra_u.ablkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.geniv = "eseqiv",
.ivsize = AES_BLOCK_SIZE,
.setkey = omap_aes_setkey,
.encrypt = omap_aes_ctr_encrypt,
.decrypt = omap_aes_ctr_decrypt,
}
} ,
};
static struct omap_aes_algs_info omap_aes_algs_info_ecb_cbc[] = {
{
.algs_list = algs_ecb_cbc,
.size = ARRAY_SIZE(algs_ecb_cbc),
},
};
static const struct omap_aes_pdata omap_aes_pdata_omap2 = {
.algs_info = omap_aes_algs_info_ecb_cbc,
.algs_info_size = ARRAY_SIZE(omap_aes_algs_info_ecb_cbc),
.trigger = omap_aes_dma_trigger_omap2,
.key_ofs = 0x1c,
.iv_ofs = 0x20,
.ctrl_ofs = 0x30,
.data_ofs = 0x34,
.rev_ofs = 0x44,
.mask_ofs = 0x48,
.dma_enable_in = BIT(2),
.dma_enable_out = BIT(3),
.dma_start = BIT(5),
.major_mask = 0xf0,
.major_shift = 4,
.minor_mask = 0x0f,
.minor_shift = 0,
};
#ifdef CONFIG_OF
static struct omap_aes_algs_info omap_aes_algs_info_ecb_cbc_ctr[] = {
{
.algs_list = algs_ecb_cbc,
.size = ARRAY_SIZE(algs_ecb_cbc),
},
{
.algs_list = algs_ctr,
.size = ARRAY_SIZE(algs_ctr),
},
};
static const struct omap_aes_pdata omap_aes_pdata_omap3 = {
.algs_info = omap_aes_algs_info_ecb_cbc_ctr,
.algs_info_size = ARRAY_SIZE(omap_aes_algs_info_ecb_cbc_ctr),
.trigger = omap_aes_dma_trigger_omap2,
.key_ofs = 0x1c,
.iv_ofs = 0x20,
.ctrl_ofs = 0x30,
.data_ofs = 0x34,
.rev_ofs = 0x44,
.mask_ofs = 0x48,
.dma_enable_in = BIT(2),
.dma_enable_out = BIT(3),
.dma_start = BIT(5),
.major_mask = 0xf0,
.major_shift = 4,
.minor_mask = 0x0f,
.minor_shift = 0,
};
static const struct omap_aes_pdata omap_aes_pdata_omap4 = {
.algs_info = omap_aes_algs_info_ecb_cbc_ctr,
.algs_info_size = ARRAY_SIZE(omap_aes_algs_info_ecb_cbc_ctr),
.trigger = omap_aes_dma_trigger_omap4,
.key_ofs = 0x3c,
.iv_ofs = 0x40,
.ctrl_ofs = 0x50,
.data_ofs = 0x60,
.rev_ofs = 0x80,
.mask_ofs = 0x84,
.irq_status_ofs = 0x8c,
.irq_enable_ofs = 0x90,
.dma_enable_in = BIT(5),
.dma_enable_out = BIT(6),
.major_mask = 0x0700,
.major_shift = 8,
.minor_mask = 0x003f,
.minor_shift = 0,
};
static irqreturn_t omap_aes_irq(int irq, void *dev_id)
{
struct omap_aes_dev *dd = dev_id;
u32 status, i;
u32 *src, *dst;
status = omap_aes_read(dd, AES_REG_IRQ_STATUS(dd));
if (status & AES_REG_IRQ_DATA_IN) {
omap_aes_write(dd, AES_REG_IRQ_ENABLE(dd), 0x0);
BUG_ON(!dd->in_sg);
BUG_ON(_calc_walked(in) > dd->in_sg->length);
src = sg_virt(dd->in_sg) + _calc_walked(in);
for (i = 0; i < AES_BLOCK_WORDS; i++) {
omap_aes_write(dd, AES_REG_DATA_N(dd, i), *src);
scatterwalk_advance(&dd->in_walk, 4);
if (dd->in_sg->length == _calc_walked(in)) {
dd->in_sg = sg_next(dd->in_sg);
if (dd->in_sg) {
scatterwalk_start(&dd->in_walk,
dd->in_sg);
src = sg_virt(dd->in_sg) +
_calc_walked(in);
}
} else {
src++;
}
}
/* Clear IRQ status */
status &= ~AES_REG_IRQ_DATA_IN;
omap_aes_write(dd, AES_REG_IRQ_STATUS(dd), status);
/* Enable DATA_OUT interrupt */
omap_aes_write(dd, AES_REG_IRQ_ENABLE(dd), 0x4);
} else if (status & AES_REG_IRQ_DATA_OUT) {
omap_aes_write(dd, AES_REG_IRQ_ENABLE(dd), 0x0);
BUG_ON(!dd->out_sg);
BUG_ON(_calc_walked(out) > dd->out_sg->length);
dst = sg_virt(dd->out_sg) + _calc_walked(out);
for (i = 0; i < AES_BLOCK_WORDS; i++) {
*dst = omap_aes_read(dd, AES_REG_DATA_N(dd, i));
scatterwalk_advance(&dd->out_walk, 4);
if (dd->out_sg->length == _calc_walked(out)) {
dd->out_sg = sg_next(dd->out_sg);
if (dd->out_sg) {
scatterwalk_start(&dd->out_walk,
dd->out_sg);
dst = sg_virt(dd->out_sg) +
_calc_walked(out);
}
} else {
dst++;
}
}
dd->total -= min_t(size_t, AES_BLOCK_SIZE, dd->total);
/* Clear IRQ status */
status &= ~AES_REG_IRQ_DATA_OUT;
omap_aes_write(dd, AES_REG_IRQ_STATUS(dd), status);
if (!dd->total)
/* All bytes read! */
tasklet_schedule(&dd->done_task);
else
/* Enable DATA_IN interrupt for next block */
omap_aes_write(dd, AES_REG_IRQ_ENABLE(dd), 0x2);
}
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| joel fernandes | joel fernandes | 459 | 98.50% | 1 | 33.33% |
| lokesh vutla | lokesh vutla | 5 | 1.07% | 1 | 33.33% |
| cristian stoica | cristian stoica | 2 | 0.43% | 1 | 33.33% |
| Total | 466 | 100.00% | 3 | 100.00% |
static const struct of_device_id omap_aes_of_match[] = {
{
.compatible = "ti,omap2-aes",
.data = &omap_aes_pdata_omap2,
},
{
.compatible = "ti,omap3-aes",
.data = &omap_aes_pdata_omap3,
},
{
.compatible = "ti,omap4-aes",
.data = &omap_aes_pdata_omap4,
},
{},
};
MODULE_DEVICE_TABLE(of, omap_aes_of_match);
static int omap_aes_get_res_of(struct omap_aes_dev *dd,
struct device *dev, struct resource *res)
{
struct device_node *node = dev->of_node;
const struct of_device_id *match;
int err = 0;
match = of_match_device(of_match_ptr(omap_aes_of_match), dev);
if (!match) {
dev_err(dev, "no compatible OF match\n");
err = -EINVAL;
goto err;
}
err = of_address_to_resource(node, 0, res);
if (err < 0) {
dev_err(dev, "can't translate OF node address\n");
err = -EINVAL;
goto err;
}
dd->pdata = match->data;
err:
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 75 | 61.48% | 2 | 66.67% |
| dmitry kasatkin | dmitry kasatkin | 47 | 38.52% | 1 | 33.33% |
| Total | 122 | 100.00% | 3 | 100.00% |
#else
static const struct of_device_id omap_aes_of_match[] = {
{},
};
static int omap_aes_get_res_of(struct omap_aes_dev *dd,
struct device *dev, struct resource *res)
{
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 24 | 96.00% | 1 | 50.00% |
| dmitry kasatkin | dmitry kasatkin | 1 | 4.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
#endif
static int omap_aes_get_res_pdev(struct omap_aes_dev *dd,
struct platform_device *pdev, struct resource *res)
{
struct device *dev = &pdev->dev;
struct resource *r;
int err = 0;
/* Get the base address */
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
dev_err(dev, "no MEM resource info\n");
err = -ENODEV;
goto err;
}
memcpy(res, r, sizeof(*res));
/* Only OMAP2/3 can be non-DT */
dd->pdata = &omap_aes_pdata_omap2;
err:
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 70 | 69.31% | 2 | 66.67% |
| dmitry kasatkin | dmitry kasatkin | 31 | 30.69% | 1 | 33.33% |
| Total | 101 | 100.00% | 3 | 100.00% |
static int omap_aes_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct omap_aes_dev *dd;
struct crypto_alg *algp;
struct resource res;
int err = -ENOMEM, i, j, irq = -1;
u32 reg;
dd = devm_kzalloc(dev, sizeof(struct omap_aes_dev), GFP_KERNEL);
if (dd == NULL) {
dev_err(dev, "unable to alloc data struct.\n");
goto err_data;
}
dd->dev = dev;
platform_set_drvdata(pdev, dd);
err = (dev->of_node) ? omap_aes_get_res_of(dd, dev, &res) :
omap_aes_get_res_pdev(dd, pdev, &res);
if (err)
goto err_res;
dd->io_base = devm_ioremap_resource(dev, &res);
if (IS_ERR(dd->io_base)) {
err = PTR_ERR(dd->io_base);
goto err_res;
}
dd->phys_base = res.start;
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, DEFAULT_AUTOSUSPEND_DELAY);
pm_runtime_enable(dev);
err = pm_runtime_get_sync(dev);
if (err < 0) {
dev_err(dev, "%s: failed to get_sync(%d)\n",
__func__, err);
goto err_res;
}
omap_aes_dma_stop(dd);
reg = omap_aes_read(dd, AES_REG_REV(dd));
pm_runtime_put_sync(dev);
dev_info(dev, "OMAP AES hw accel rev: %u.%u\n",
(reg & dd->pdata->major_mask) >> dd->pdata->major_shift,
(reg & dd->pdata->minor_mask) >> dd->pdata->minor_shift);
tasklet_init(&dd->done_task, omap_aes_done_task, (unsigned long)dd);
err = omap_aes_dma_init(dd);
if (err == -EPROBE_DEFER) {
goto err_irq;
} else if (err && AES_REG_IRQ_STATUS(dd) && AES_REG_IRQ_ENABLE(dd)) {
dd->pio_only = 1;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "can't get IRQ resource\n");
goto err_irq;
}
err = devm_request_irq(dev, irq, omap_aes_irq, 0,
dev_name(dev), dd);
if (err) {
dev_err(dev, "Unable to grab omap-aes IRQ\n");
goto err_irq;
}
}
INIT_LIST_HEAD(&dd->list);
spin_lock(&list_lock);
list_add_tail(&dd->list, &dev_list);
spin_unlock(&list_lock);
/* Initialize crypto engine */
dd->engine = crypto_engine_alloc_init(dev, 1);
if (!dd->engine) {
err = -ENOMEM;
goto err_engine;
}
dd->engine->prepare_cipher_request = omap_aes_prepare_req;
dd->engine->cipher_one_request = omap_aes_crypt_req;
err = crypto_engine_start(dd->engine);
if (err)
goto err_engine;
for (i = 0; i < dd->pdata->algs_info_size; i++) {
if (!dd->pdata->algs_info[i].registered) {
for (j = 0; j < dd->pdata->algs_info[i].size; j++) {
algp = &dd->pdata->algs_info[i].algs_list[j];
pr_debug("reg alg: %s\n", algp->cra_name);
INIT_LIST_HEAD(&algp->cra_list);
err = crypto_register_alg(algp);
if (err)
goto err_algs;
dd->pdata->algs_info[i].registered++;
}
}
}
return 0;
err_algs:
for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
crypto_unregister_alg(
&dd->pdata->algs_info[i].algs_list[j]);
err_engine:
if (dd->engine)
crypto_engine_exit(dd->engine);
omap_aes_dma_cleanup(dd);
err_irq:
tasklet_kill(&dd->done_task);
pm_runtime_disable(dev);
err_res:
dd = NULL;
err_data:
dev_err(dev, "initialization failed.\n");
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 298 | 40.54% | 4 | 25.00% |
| dmitry kasatkin | dmitry kasatkin | 198 | 26.94% | 2 | 12.50% |
| joel fernandes | joel fernandes | 88 | 11.97% | 3 | 18.75% |
| tero kristo | tero kristo | 81 | 11.02% | 2 | 12.50% |
| nishanth menon | nishanth menon | 24 | 3.27% | 1 | 6.25% |
| lokesh vutla | lokesh vutla | 16 | 2.18% | 1 | 6.25% |
| peter ujfalusi | peter ujfalusi | 13 | 1.77% | 1 | 6.25% |
| laurent navet | laurent navet | 10 | 1.36% | 1 | 6.25% |
| wei yongjun | wei yongjun | 7 | 0.95% | 1 | 6.25% |
| Total | 735 | 100.00% | 16 | 100.00% |
static int omap_aes_remove(struct platform_device *pdev)
{
struct omap_aes_dev *dd = platform_get_drvdata(pdev);
int i, j;
if (!dd)
return -ENODEV;
spin_lock(&list_lock);
list_del(&dd->list);
spin_unlock(&list_lock);
for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
crypto_unregister_alg(
&dd->pdata->algs_info[i].algs_list[j]);
crypto_engine_exit(dd->engine);
tasklet_kill(&dd->done_task);
omap_aes_dma_cleanup(dd);
pm_runtime_disable(dd->dev);
dd = NULL;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 99 | 66.00% | 2 | 40.00% |
| mark a. greer | mark a. greer | 48 | 32.00% | 2 | 40.00% |
| baolin wang | baolin wang | 3 | 2.00% | 1 | 20.00% |
| Total | 150 | 100.00% | 5 | 100.00% |
#ifdef CONFIG_PM_SLEEP
static int omap_aes_suspend(struct device *dev)
{
pm_runtime_put_sync(dev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static int omap_aes_resume(struct device *dev)
{
pm_runtime_get_sync(dev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark a. greer | mark a. greer | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
#endif
static SIMPLE_DEV_PM_OPS(omap_aes_pm_ops, omap_aes_suspend, omap_aes_resume);
static struct platform_driver omap_aes_driver = {
.probe = omap_aes_probe,
.remove = omap_aes_remove,
.driver = {
.name = "omap-aes",
.pm = &omap_aes_pm_ops,
.of_match_table = omap_aes_of_match,
},
};
module_platform_driver(omap_aes_driver);
MODULE_DESCRIPTION("OMAP AES hw acceleration support.");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Dmitry Kasatkin");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dmitry kasatkin | dmitry kasatkin | 2077 | 34.02% | 5 | 10.20% |
| mark a. greer | mark a. greer | 1975 | 32.35% | 8 | 16.33% |
| joel fernandes | joel fernandes | 1255 | 20.56% | 12 | 24.49% |
| lokesh vutla | lokesh vutla | 390 | 6.39% | 8 | 16.33% |
| tero kristo | tero kristo | 133 | 2.18% | 2 | 4.08% |
| baolin wang | baolin wang | 100 | 1.64% | 1 | 2.04% |
| herbert xu | herbert xu | 68 | 1.11% | 1 | 2.04% |
| peter ujfalusi | peter ujfalusi | 45 | 0.74% | 1 | 2.04% |
| nishanth menon | nishanth menon | 24 | 0.39% | 1 | 2.04% |
| laurent navet | laurent navet | 10 | 0.16% | 1 | 2.04% |
| wei yongjun | wei yongjun | 7 | 0.11% | 1 | 2.04% |
| jingoo han | jingoo han | 6 | 0.10% | 1 | 2.04% |
| nikos mavrogiannopoulos | nikos mavrogiannopoulos | 4 | 0.07% | 1 | 2.04% |
| sachin kamat | sachin kamat | 4 | 0.07% | 2 | 4.08% |
| labbe corentin | labbe corentin | 4 | 0.07% | 2 | 4.08% |
| cristian stoica | cristian stoica | 2 | 0.03% | 1 | 2.04% |
| rahul pathak | rahul pathak | 1 | 0.02% | 1 | 2.04% |
| Total | 6105 | 100.00% | 49 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.