Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-02 17:11:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

crypto: rockchip - Don't dequeue the request when device is busy

Browse Source 
The device can only process one request at a time. So if multiple
requests came at the same time, we can enqueue them first, and
dequeue them one by one when the device is idle.

Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zain Wang 2017-08-15 15:48:15 +08:00 committed by Herbert Xu
parent baf5b752da
commit 5a7801f663
4 changed files with 160 additions and 148 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/crypto/rockchip/rk3288_crypto.c
View File

@ -184,15 +184,53 @@ static irqreturn_t rk_crypto_irq_handle(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int rk_crypto_enqueue(struct rk_crypto_info *dev,
struct crypto_async_request *async_req)
{
unsigned long flags;
int ret;
spin_lock_irqsave(&dev->lock, flags);
ret = crypto_enqueue_request(&dev->queue, async_req);
if (dev->busy) {
spin_unlock_irqrestore(&dev->lock, flags);
return ret;
}
dev->busy = true;
spin_unlock_irqrestore(&dev->lock, flags);
tasklet_schedule(&dev->queue_task);
return ret;
}
static void rk_crypto_queue_task_cb(unsigned long data)
{
struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
struct crypto_async_request *async_req, *backlog;
unsigned long flags;
int err = 0;
dev->err = 0;
spin_lock_irqsave(&dev->lock, flags);
backlog = crypto_get_backlog(&dev->queue);
async_req = crypto_dequeue_request(&dev->queue);
if (!async_req) {
dev->busy = false;
spin_unlock_irqrestore(&dev->lock, flags);
return;
}
spin_unlock_irqrestore(&dev->lock, flags);
if (backlog) {
backlog->complete(backlog, -EINPROGRESS);
backlog = NULL;
}
dev->async_req = async_req;
err = dev->start(dev);
if (err)
dev->complete(dev, err);
dev->complete(dev->async_req, err);
}
static void rk_crypto_done_task_cb(unsigned long data)
@ -200,13 +238,13 @@ static void rk_crypto_done_task_cb(unsigned long data)
struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
if (dev->err) {
dev->complete(dev, dev->err);
dev->complete(dev->async_req, dev->err);
return;
}
dev->err = dev->update(dev);
if (dev->err)
dev->complete(dev, dev->err);
dev->complete(dev->async_req, dev->err);
}
static struct rk_crypto_tmp *rk_cipher_algs[] = {
@ -365,6 +403,8 @@ static int rk_crypto_probe(struct platform_device *pdev)
crypto_info->disable_clk = rk_crypto_disable_clk;
crypto_info->load_data = rk_load_data;
crypto_info->unload_data = rk_unload_data;
crypto_info->enqueue = rk_crypto_enqueue;
crypto_info->busy = false;
err = rk_crypto_register(crypto_info);
if (err) {

11
drivers/crypto/rockchip/rk3288_crypto.h
View File

@ -192,8 +192,7 @@ struct rk_crypto_info {
struct crypto_queue queue;
struct tasklet_struct queue_task;
struct tasklet_struct done_task;
struct ablkcipher_request *ablk_req;
struct ahash_request *ahash_req;
struct crypto_async_request *async_req;
int err;
/* device lock */
spinlock_t lock;
@ -210,18 +209,20 @@ struct rk_crypto_info {
size_t nents;
unsigned int total;
unsigned int count;
u32 mode;
dma_addr_t addr_in;
dma_addr_t addr_out;
bool busy;
int (*start)(struct rk_crypto_info *dev);
int (*update)(struct rk_crypto_info *dev);
void (*complete)(struct rk_crypto_info *dev, int err);
void (*complete)(struct crypto_async_request *base, int err);
int (*enable_clk)(struct rk_crypto_info *dev);
void (*disable_clk)(struct rk_crypto_info *dev);
int (*load_data)(struct rk_crypto_info *dev,
struct scatterlist *sg_src,
struct scatterlist *sg_dst);
void (*unload_data)(struct rk_crypto_info *dev);
int (*enqueue)(struct rk_crypto_info *dev,
struct crypto_async_request *async_req);
};
/* the private variable of hash */
@ -234,12 +235,14 @@ struct rk_ahash_ctx {
/* the privete variable of hash for fallback */
struct rk_ahash_rctx {
struct ahash_request fallback_req;
u32 mode;
};
/* the private variable of cipher */
struct rk_cipher_ctx {
struct rk_crypto_info *dev;
unsigned int keylen;
u32 mode;
};
enum alg_type {

118
drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
View File

@ -15,50 +15,19 @@
#define RK_CRYPTO_DEC BIT(0)
static void rk_crypto_complete(struct rk_crypto_info *dev, int err)
static void rk_crypto_complete(struct crypto_async_request *base, int err)
{
if (dev->ablk_req->base.complete)
dev->ablk_req->base.complete(&dev->ablk_req->base, err);
if (base->complete)
base->complete(base, err);
}
static int rk_handle_req(struct rk_crypto_info *dev,
struct ablkcipher_request *req)
{
unsigned long flags;
struct crypto_async_request *async_req, *backlog;
int err;
if (!IS_ALIGNED(req->nbytes, dev->align_size))
return -EINVAL;
dev->left_bytes = req->nbytes;
dev->total = req->nbytes;
dev->sg_src = req->src;
dev->first = req->src;
dev->nents = sg_nents(req->src);
dev->sg_dst = req->dst;
dev->aligned = 1;
dev->ablk_req = req;
spin_lock_irqsave(&dev->lock, flags);
err = ablkcipher_enqueue_request(&dev->queue, req);
backlog = crypto_get_backlog(&dev->queue);
async_req = crypto_dequeue_request(&dev->queue);
spin_unlock_irqrestore(&dev->lock, flags);
if (!async_req) {
dev_err(dev->dev, "async_req is NULL !!\n");
return err;
}
if (backlog) {
backlog->complete(backlog, -EINPROGRESS);
backlog = NULL;
}
dev->ablk_req = ablkcipher_request_cast(async_req);
tasklet_schedule(&dev->queue_task);
return err;
else
return dev->enqueue(dev, &req->base);
}
static int rk_aes_setkey(struct crypto_ablkcipher *cipher,
@ -108,7 +77,7 @@ static int rk_aes_ecb_encrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_AES_ECB_MODE;
ctx->mode = RK_CRYPTO_AES_ECB_MODE;
return rk_handle_req(dev, req);
}
@ -118,7 +87,7 @@ static int rk_aes_ecb_decrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_AES_ECB_MODE | RK_CRYPTO_DEC;
ctx->mode = RK_CRYPTO_AES_ECB_MODE | RK_CRYPTO_DEC;
return rk_handle_req(dev, req);
}
@ -128,7 +97,7 @@ static int rk_aes_cbc_encrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_AES_CBC_MODE;
ctx->mode = RK_CRYPTO_AES_CBC_MODE;
return rk_handle_req(dev, req);
}
@ -138,7 +107,7 @@ static int rk_aes_cbc_decrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_AES_CBC_MODE | RK_CRYPTO_DEC;
ctx->mode = RK_CRYPTO_AES_CBC_MODE | RK_CRYPTO_DEC;
return rk_handle_req(dev, req);
}
@ -148,7 +117,7 @@ static int rk_des_ecb_encrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = 0;
ctx->mode = 0;
return rk_handle_req(dev, req);
}
@ -158,7 +127,7 @@ static int rk_des_ecb_decrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_DEC;
ctx->mode = RK_CRYPTO_DEC;
return rk_handle_req(dev, req);
}
@ -168,7 +137,7 @@ static int rk_des_cbc_encrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_TDES_CHAINMODE_CBC;
ctx->mode = RK_CRYPTO_TDES_CHAINMODE_CBC;
return rk_handle_req(dev, req);
}
@ -178,7 +147,7 @@ static int rk_des_cbc_decrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_TDES_CHAINMODE_CBC | RK_CRYPTO_DEC;
ctx->mode = RK_CRYPTO_TDES_CHAINMODE_CBC | RK_CRYPTO_DEC;
return rk_handle_req(dev, req);
}
@ -188,7 +157,7 @@ static int rk_des3_ede_ecb_encrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_TDES_SELECT;
ctx->mode = RK_CRYPTO_TDES_SELECT;
return rk_handle_req(dev, req);
}
@ -198,7 +167,7 @@ static int rk_des3_ede_ecb_decrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_DEC;
ctx->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_DEC;
return rk_handle_req(dev, req);
}
@ -208,7 +177,7 @@ static int rk_des3_ede_cbc_encrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE_CBC;
ctx->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE_CBC;
return rk_handle_req(dev, req);
}
@ -218,15 +187,16 @@ static int rk_des3_ede_cbc_decrypt(struct ablkcipher_request *req)
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
struct rk_crypto_info *dev = ctx->dev;
dev->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE_CBC |
ctx->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE_CBC |
RK_CRYPTO_DEC;
return rk_handle_req(dev, req);
}
static void rk_ablk_hw_init(struct rk_crypto_info *dev)
{
struct crypto_ablkcipher *cipher =
crypto_ablkcipher_reqtfm(dev->ablk_req);
struct ablkcipher_request *req =
ablkcipher_request_cast(dev->async_req);
struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req);
struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(cipher);
u32 ivsize, block, conf_reg = 0;
@ -235,25 +205,23 @@ static void rk_ablk_hw_init(struct rk_crypto_info *dev)
ivsize = crypto_ablkcipher_ivsize(cipher);
if (block == DES_BLOCK_SIZE) {
dev->mode |= RK_CRYPTO_TDES_FIFO_MODE |
ctx->mode |= RK_CRYPTO_TDES_FIFO_MODE |
RK_CRYPTO_TDES_BYTESWAP_KEY |
RK_CRYPTO_TDES_BYTESWAP_IV;
CRYPTO_WRITE(dev, RK_CRYPTO_TDES_CTRL, dev->mode);
memcpy_toio(dev->reg + RK_CRYPTO_TDES_IV_0,
dev->ablk_req->info, ivsize);
CRYPTO_WRITE(dev, RK_CRYPTO_TDES_CTRL, ctx->mode);
memcpy_toio(dev->reg + RK_CRYPTO_TDES_IV_0, req->info, ivsize);
conf_reg = RK_CRYPTO_DESSEL;
} else {
dev->mode |= RK_CRYPTO_AES_FIFO_MODE |
ctx->mode |= RK_CRYPTO_AES_FIFO_MODE |
RK_CRYPTO_AES_KEY_CHANGE |
RK_CRYPTO_AES_BYTESWAP_KEY |
RK_CRYPTO_AES_BYTESWAP_IV;
if (ctx->keylen == AES_KEYSIZE_192)
dev->mode |= RK_CRYPTO_AES_192BIT_key;
ctx->mode |= RK_CRYPTO_AES_192BIT_key;
else if (ctx->keylen == AES_KEYSIZE_256)
dev->mode |= RK_CRYPTO_AES_256BIT_key;
CRYPTO_WRITE(dev, RK_CRYPTO_AES_CTRL, dev->mode);
memcpy_toio(dev->reg + RK_CRYPTO_AES_IV_0,
dev->ablk_req->info, ivsize);
ctx->mode |= RK_CRYPTO_AES_256BIT_key;
CRYPTO_WRITE(dev, RK_CRYPTO_AES_CTRL, ctx->mode);
memcpy_toio(dev->reg + RK_CRYPTO_AES_IV_0, req->info, ivsize);
}
conf_reg |= RK_CRYPTO_BYTESWAP_BTFIFO |
RK_CRYPTO_BYTESWAP_BRFIFO;
@ -283,8 +251,18 @@ static int rk_set_data_start(struct rk_crypto_info *dev)
static int rk_ablk_start(struct rk_crypto_info *dev)
{
struct ablkcipher_request *req =
ablkcipher_request_cast(dev->async_req);
unsigned long flags;
int err;
int err = 0;
dev->left_bytes = req->nbytes;
dev->total = req->nbytes;
dev->sg_src = req->src;
dev->first = req->src;
dev->nents = sg_nents(req->src);
dev->sg_dst = req->dst;
dev->aligned = 1;
spin_lock_irqsave(&dev->lock, flags);
rk_ablk_hw_init(dev);
@ -295,15 +273,16 @@ static int rk_ablk_start(struct rk_crypto_info *dev)
static void rk_iv_copyback(struct rk_crypto_info *dev)
{
struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(dev->ablk_req);
struct ablkcipher_request *req =
ablkcipher_request_cast(dev->async_req);
struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
u32 ivsize = crypto_ablkcipher_ivsize(tfm);
if (ivsize == DES_BLOCK_SIZE)
memcpy_fromio(dev->ablk_req->info,
dev->reg + RK_CRYPTO_TDES_IV_0, ivsize);
memcpy_fromio(req->info, dev->reg + RK_CRYPTO_TDES_IV_0,
ivsize);
else if (ivsize == AES_BLOCK_SIZE)
memcpy_fromio(dev->ablk_req->info,
dev->reg + RK_CRYPTO_AES_IV_0, ivsize);
memcpy_fromio(req->info, dev->reg + RK_CRYPTO_AES_IV_0, ivsize);
}
/* return:
@ -313,10 +292,12 @@ static void rk_iv_copyback(struct rk_crypto_info *dev)
static int rk_ablk_rx(struct rk_crypto_info *dev)
{
int err = 0;
struct ablkcipher_request *req =
ablkcipher_request_cast(dev->async_req);
dev->unload_data(dev);
if (!dev->aligned) {
if (!sg_pcopy_from_buffer(dev->ablk_req->dst, dev->nents,
if (!sg_pcopy_from_buffer(req->dst, dev->nents,
dev->addr_vir, dev->count,
dev->total - dev->left_bytes -
dev->count)) {
@ -339,7 +320,8 @@ static int rk_ablk_rx(struct rk_crypto_info *dev)
} else {
rk_iv_copyback(dev);
/* here show the calculation is over without any err */
dev->complete(dev, 0);
dev->complete(dev->async_req, 0);
tasklet_schedule(&dev->queue_task);
}
out_rx:
return err;

133
drivers/crypto/rockchip/rk3288_crypto_ahash.c
View File

@ -40,14 +40,16 @@ static int zero_message_process(struct ahash_request *req)
return 0;
}
static void rk_ahash_crypto_complete(struct rk_crypto_info *dev, int err)
static void rk_ahash_crypto_complete(struct crypto_async_request *base, int err)
{
if (dev->ahash_req->base.complete)
dev->ahash_req->base.complete(&dev->ahash_req->base, err);
if (base->complete)
base->complete(base, err);
}
static void rk_ahash_reg_init(struct rk_crypto_info *dev)
{
struct ahash_request *req = ahash_request_cast(dev->async_req);
struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
int reg_status = 0;
reg_status = CRYPTO_READ(dev, RK_CRYPTO_CTRL) |
@ -67,7 +69,7 @@ static void rk_ahash_reg_init(struct rk_crypto_info *dev)
CRYPTO_WRITE(dev, RK_CRYPTO_INTSTS, RK_CRYPTO_HRDMA_ERR_INT |
RK_CRYPTO_HRDMA_DONE_INT);
CRYPTO_WRITE(dev, RK_CRYPTO_HASH_CTRL, dev->mode |
CRYPTO_WRITE(dev, RK_CRYPTO_HASH_CTRL, rctx->mode |
RK_CRYPTO_HASH_SWAP_DO);
CRYPTO_WRITE(dev, RK_CRYPTO_CONF, RK_CRYPTO_BYTESWAP_HRFIFO |
@ -164,78 +166,13 @@ static int rk_ahash_export(struct ahash_request *req, void *out)
static int rk_ahash_digest(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct rk_ahash_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
struct crypto_async_request *async_req, *backlog;
struct rk_crypto_info *dev = NULL;
unsigned long flags;
int ret;
struct rk_crypto_info *dev = tctx->dev;
if (!req->nbytes)
return zero_message_process(req);
dev = tctx->dev;
dev->total = req->nbytes;
dev->left_bytes = req->nbytes;
dev->aligned = 0;
dev->mode = 0;
dev->align_size = 4;
dev->sg_dst = NULL;
dev->sg_src = req->src;
dev->first = req->src;
dev->nents = sg_nents(req->src);
switch (crypto_ahash_digestsize(tfm)) {
case SHA1_DIGEST_SIZE:
dev->mode = RK_CRYPTO_HASH_SHA1;
break;
case SHA256_DIGEST_SIZE:
dev->mode = RK_CRYPTO_HASH_SHA256;
break;
case MD5_DIGEST_SIZE:
dev->mode = RK_CRYPTO_HASH_MD5;
break;
default:
return -EINVAL;
}
rk_ahash_reg_init(dev);
spin_lock_irqsave(&dev->lock, flags);
ret = crypto_enqueue_request(&dev->queue, &req->base);
backlog = crypto_get_backlog(&dev->queue);
async_req = crypto_dequeue_request(&dev->queue);
spin_unlock_irqrestore(&dev->lock, flags);
if (!async_req) {
dev_err(dev->dev, "async_req is NULL !!\n");
return ret;
}
if (backlog) {
backlog->complete(backlog, -EINPROGRESS);
backlog = NULL;
}
dev->ahash_req = ahash_request_cast(async_req);
tasklet_schedule(&dev->queue_task);
/*
* it will take some time to process date after last dma transmission.
*
* waiting time is relative with the last date len,
* so cannot set a fixed time here.
* 10-50 makes system not call here frequently wasting
* efficiency, and make it response quickly when dma
* complete.
*/
while (!CRYPTO_READ(dev, RK_CRYPTO_HASH_STS))
usleep_range(10, 50);
memcpy_fromio(req->result, dev->reg + RK_CRYPTO_HASH_DOUT_0,
crypto_ahash_digestsize(tfm));
return 0;
else
return dev->enqueue(dev, &req->base);
}
static void crypto_ahash_dma_start(struct rk_crypto_info *dev)
@ -258,12 +195,45 @@ static int rk_ahash_set_data_start(struct rk_crypto_info *dev)
static int rk_ahash_start(struct rk_crypto_info *dev)
{
struct ahash_request *req = ahash_request_cast(dev->async_req);
struct crypto_ahash *tfm;
struct rk_ahash_rctx *rctx;
dev->total = req->nbytes;
dev->left_bytes = req->nbytes;
dev->aligned = 0;
dev->align_size = 4;
dev->sg_dst = NULL;
dev->sg_src = req->src;
dev->first = req->src;
dev->nents = sg_nents(req->src);
rctx = ahash_request_ctx(req);
rctx->mode = 0;
tfm = crypto_ahash_reqtfm(req);
switch (crypto_ahash_digestsize(tfm)) {
case SHA1_DIGEST_SIZE:
rctx->mode = RK_CRYPTO_HASH_SHA1;
break;
case SHA256_DIGEST_SIZE:
rctx->mode = RK_CRYPTO_HASH_SHA256;
break;
case MD5_DIGEST_SIZE:
rctx->mode = RK_CRYPTO_HASH_MD5;
break;
default:
return -EINVAL;
}
rk_ahash_reg_init(dev);
return rk_ahash_set_data_start(dev);
}
static int rk_ahash_crypto_rx(struct rk_crypto_info *dev)
{
int err = 0;
struct ahash_request *req = ahash_request_cast(dev->async_req);
struct crypto_ahash *tfm;
dev->unload_data(dev);
if (dev->left_bytes) {
@ -278,7 +248,24 @@ static int rk_ahash_crypto_rx(struct rk_crypto_info *dev)
}
err = rk_ahash_set_data_start(dev);
} else {
dev->complete(dev, 0);
/*
* it will take some time to process date after last dma
* transmission.
*
* waiting time is relative with the last date len,
* so cannot set a fixed time here.
* 10us makes system not call here frequently wasting
* efficiency, and make it response quickly when dma
* complete.
*/
while (!CRYPTO_READ(dev, RK_CRYPTO_HASH_STS))
udelay(10);
tfm = crypto_ahash_reqtfm(req);
memcpy_fromio(req->result, dev->reg + RK_CRYPTO_HASH_DOUT_0,
crypto_ahash_digestsize(tfm));
dev->complete(dev->async_req, 0);
tasklet_schedule(&dev->queue_task);
}
out_rx: