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crypto: hifn_795x - Fix queue management
Fix queue management. Change ring size and perform its check not one after another descriptor, but using stored pointers to the last checked descriptors. Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Evgeniy Polyakov
Herbert Xu
parent
3ec858de64
commit
d6a10c84a2
@ -360,14 +360,14 @@ static atomic_t hifn_dev_number;
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#define HIFN_NAMESIZE 32
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#define HIFN_MAX_RESULT_ORDER 5
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#define HIFN_D_CMD_RSIZE 24*4
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#define HIFN_D_SRC_RSIZE 80*4
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#define HIFN_D_DST_RSIZE 80*4
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#define HIFN_D_RES_RSIZE 24*4
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#define HIFN_D_CMD_RSIZE 24*1
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#define HIFN_D_SRC_RSIZE 80*1
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#define HIFN_D_DST_RSIZE 80*1
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#define HIFN_D_RES_RSIZE 24*1
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#define HIFN_D_DST_DALIGN 4
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#define HIFN_QUEUE_LENGTH HIFN_D_CMD_RSIZE-1
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#define HIFN_QUEUE_LENGTH (HIFN_D_CMD_RSIZE - 1)
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#define AES_MIN_KEY_SIZE 16
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#define AES_MAX_KEY_SIZE 32
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@ -1256,6 +1256,7 @@ static int hifn_setup_cmd_desc(struct hifn_device *dev,
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}
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dev->sa[sa_idx] = priv;
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dev->started++;
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cmd_len = buf_pos - buf;
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dma->cmdr[dma->cmdi].l = __cpu_to_le32(cmd_len | HIFN_D_VALID |
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@ -1382,9 +1383,6 @@ static int hifn_setup_dma(struct hifn_device *dev,
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soff = src->offset;
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len = min(src->length, n);
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dprintk("%s: spage: %p, soffset: %u, nbytes: %u, "
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"priv: %p, rctx: %p.\n",
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dev->name, spage, soff, nbytes, priv, rctx);
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hifn_setup_src_desc(dev, spage, soff, len, n - len == 0);
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src++;
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@ -1405,9 +1403,6 @@ static int hifn_setup_dma(struct hifn_device *dev,
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}
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len = min(len, n);
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dprintk("%s: dpage: %p, doffset: %u, nbytes: %u, "
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"priv: %p, rctx: %p.\n",
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dev->name, dpage, doff, nbytes, priv, rctx);
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hifn_setup_dst_desc(dev, dpage, doff, len, n - len == 0);
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dst++;
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@ -1620,13 +1615,12 @@ static int hifn_setup_session(struct ablkcipher_request *req)
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goto err_out;
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}
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dev->snum++;
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dev->started++;
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err = hifn_setup_dma(dev, ctx, rctx, req->src, req->dst, req->nbytes, req);
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if (err)
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goto err_out;
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dev->snum++;
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dev->active = HIFN_DEFAULT_ACTIVE_NUM;
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spin_unlock_irqrestore(&dev->lock, flags);
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@ -1635,12 +1629,13 @@ static int hifn_setup_session(struct ablkcipher_request *req)
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err_out:
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spin_unlock_irqrestore(&dev->lock, flags);
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err_out_exit:
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if (err)
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dprintk("%s: iv: %p [%d], key: %p [%d], mode: %u, op: %u, "
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if (err) {
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printk("%s: iv: %p [%d], key: %p [%d], mode: %u, op: %u, "
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"type: %u, err: %d.\n",
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dev->name, rctx->iv, rctx->ivsize,
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ctx->key, ctx->keysize,
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rctx->mode, rctx->op, rctx->type, err);
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}
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return err;
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}
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@ -1676,6 +1671,7 @@ static int hifn_test(struct hifn_device *dev, int encdec, u8 snum)
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if (err)
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goto err_out;
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dev->started = 0;
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msleep(200);
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dprintk("%s: decoded: ", dev->name);
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@ -1702,6 +1698,7 @@ static int hifn_start_device(struct hifn_device *dev)
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{
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int err;
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dev->started = dev->active = 0;
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hifn_reset_dma(dev, 1);
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err = hifn_enable_crypto(dev);
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@ -1755,19 +1752,22 @@ static int ablkcipher_get(void *saddr, unsigned int *srestp, unsigned int offset
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return idx;
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}
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static inline void hifn_complete_sa(struct hifn_device *dev, int i)
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{
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unsigned long flags;
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spin_lock_irqsave(&dev->lock, flags);
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dev->sa[i] = NULL;
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dev->started--;
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if (dev->started < 0)
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printk("%s: started: %d.\n", __func__, dev->started);
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spin_unlock_irqrestore(&dev->lock, flags);
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BUG_ON(dev->started < 0);
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}
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static void hifn_process_ready(struct ablkcipher_request *req, int error)
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{
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struct hifn_context *ctx = crypto_tfm_ctx(req->base.tfm);
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struct hifn_request_context *rctx = ablkcipher_request_ctx(req);
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struct hifn_device *dev;
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dprintk("%s: req: %p, ctx: %p rctx: %p.\n", __func__, req, ctx, rctx);
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dev = ctx->dev;
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dprintk("%s: req: %p, started: %d.\n", __func__, req, dev->started);
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if (--dev->started < 0)
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BUG();
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if (rctx->walk.flags & ASYNC_FLAGS_MISALIGNED) {
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unsigned int nbytes = req->nbytes;
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@ -1810,33 +1810,7 @@ static void hifn_process_ready(struct ablkcipher_request *req, int error)
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req->base.complete(&req->base, error);
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}
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static void hifn_check_for_completion(struct hifn_device *dev, int error)
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{
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int i;
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struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
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for (i=0; i<HIFN_D_RES_RSIZE; ++i) {
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struct hifn_desc *d = &dma->resr[i];
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if (!(d->l & __cpu_to_le32(HIFN_D_VALID)) && dev->sa[i]) {
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dev->success++;
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dev->reset = 0;
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hifn_process_ready(dev->sa[i], error);
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dev->sa[i] = NULL;
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}
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if (d->l & __cpu_to_le32(HIFN_D_DESTOVER | HIFN_D_OVER))
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if (printk_ratelimit())
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printk("%s: overflow detected [d: %u, o: %u] "
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"at %d resr: l: %08x, p: %08x.\n",
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dev->name,
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!!(d->l & __cpu_to_le32(HIFN_D_DESTOVER)),
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!!(d->l & __cpu_to_le32(HIFN_D_OVER)),
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i, d->l, d->p);
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}
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}
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static void hifn_clear_rings(struct hifn_device *dev)
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static void hifn_clear_rings(struct hifn_device *dev, int error)
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{
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struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
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int i, u;
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@ -1853,21 +1827,26 @@ static void hifn_clear_rings(struct hifn_device *dev)
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if (dma->resr[i].l & __cpu_to_le32(HIFN_D_VALID))
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break;
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if (i != HIFN_D_RES_RSIZE)
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u--;
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if (dev->sa[i]) {
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dev->success++;
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dev->reset = 0;
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hifn_process_ready(dev->sa[i], error);
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hifn_complete_sa(dev, i);
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}
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if (++i == (HIFN_D_RES_RSIZE + 1))
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if (++i == HIFN_D_RES_RSIZE)
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i = 0;
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u--;
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}
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dma->resk = i; dma->resu = u;
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i = dma->srck; u = dma->srcu;
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while (u != 0) {
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if (i == HIFN_D_SRC_RSIZE)
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i = 0;
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if (dma->srcr[i].l & __cpu_to_le32(HIFN_D_VALID))
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break;
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i++, u--;
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if (++i == HIFN_D_SRC_RSIZE)
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i = 0;
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u--;
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}
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dma->srck = i; dma->srcu = u;
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@ -1875,20 +1854,19 @@ static void hifn_clear_rings(struct hifn_device *dev)
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while (u != 0) {
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if (dma->cmdr[i].l & __cpu_to_le32(HIFN_D_VALID))
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break;
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if (i != HIFN_D_CMD_RSIZE)
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u--;
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if (++i == (HIFN_D_CMD_RSIZE + 1))
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if (++i == HIFN_D_CMD_RSIZE)
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i = 0;
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u--;
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}
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dma->cmdk = i; dma->cmdu = u;
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i = dma->dstk; u = dma->dstu;
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while (u != 0) {
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if (i == HIFN_D_DST_RSIZE)
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i = 0;
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if (dma->dstr[i].l & __cpu_to_le32(HIFN_D_VALID))
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break;
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i++, u--;
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if (++i == HIFN_D_DST_RSIZE)
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i = 0;
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u--;
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}
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dma->dstk = i; dma->dstu = u;
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@ -1933,30 +1911,39 @@ static void hifn_work(struct work_struct *work)
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} else
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dev->active--;
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if (dev->prev_success == dev->success && dev->started)
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if ((dev->prev_success == dev->success) && dev->started)
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reset = 1;
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dev->prev_success = dev->success;
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spin_unlock_irqrestore(&dev->lock, flags);
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if (reset) {
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dprintk("%s: r: %08x, active: %d, started: %d, "
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"success: %lu: reset: %d.\n",
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dev->name, r, dev->active, dev->started,
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dev->success, reset);
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if (++dev->reset >= 5) {
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dprintk("%s: really hard reset.\n", dev->name);
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int i;
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struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
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printk("%s: r: %08x, active: %d, started: %d, "
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"success: %lu: qlen: %u/%u, reset: %d.\n",
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dev->name, r, dev->active, dev->started,
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dev->success, dev->queue.qlen, dev->queue.max_qlen,
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reset);
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printk("%s: res: ", __func__);
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for (i=0; i<HIFN_D_RES_RSIZE; ++i) {
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printk("%x.%p ", dma->resr[i].l, dev->sa[i]);
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if (dev->sa[i]) {
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hifn_process_ready(dev->sa[i], -ENODEV);
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hifn_complete_sa(dev, i);
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}
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}
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printk("\n");
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hifn_reset_dma(dev, 1);
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hifn_stop_device(dev);
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hifn_start_device(dev);
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dev->reset = 0;
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}
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spin_lock_irqsave(&dev->lock, flags);
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hifn_check_for_completion(dev, -EBUSY);
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hifn_clear_rings(dev);
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dev->started = 0;
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spin_unlock_irqrestore(&dev->lock, flags);
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tasklet_schedule(&dev->tasklet);
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}
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schedule_delayed_work(&dev->work, HZ);
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@ -1973,8 +1960,8 @@ static irqreturn_t hifn_interrupt(int irq, void *data)
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dprintk("%s: 1 dmacsr: %08x, dmareg: %08x, res: %08x [%d], "
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"i: %d.%d.%d.%d, u: %d.%d.%d.%d.\n",
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dev->name, dmacsr, dev->dmareg, dmacsr & dev->dmareg, dma->cmdi,
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dma->cmdu, dma->srcu, dma->dstu, dma->resu,
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dma->cmdi, dma->srci, dma->dsti, dma->resi);
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dma->cmdi, dma->srci, dma->dsti, dma->resi,
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dma->cmdu, dma->srcu, dma->dstu, dma->resu);
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if ((dmacsr & dev->dmareg) == 0)
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return IRQ_NONE;
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@ -1991,11 +1978,10 @@ static irqreturn_t hifn_interrupt(int irq, void *data)
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if (restart) {
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u32 puisr = hifn_read_0(dev, HIFN_0_PUISR);
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if (printk_ratelimit())
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printk("%s: overflow: r: %d, d: %d, puisr: %08x, d: %u.\n",
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dev->name, !!(dmacsr & HIFN_DMACSR_R_OVER),
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!!(dmacsr & HIFN_DMACSR_D_OVER),
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puisr, !!(puisr & HIFN_PUISR_DSTOVER));
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printk(KERN_WARNING "%s: overflow: r: %d, d: %d, puisr: %08x, d: %u.\n",
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dev->name, !!(dmacsr & HIFN_DMACSR_R_OVER),
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!!(dmacsr & HIFN_DMACSR_D_OVER),
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puisr, !!(puisr & HIFN_PUISR_DSTOVER));
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if (!!(puisr & HIFN_PUISR_DSTOVER))
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hifn_write_0(dev, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
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hifn_write_1(dev, HIFN_1_DMA_CSR, dmacsr & (HIFN_DMACSR_R_OVER |
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@ -2005,12 +1991,11 @@ static irqreturn_t hifn_interrupt(int irq, void *data)
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restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
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HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
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if (restart) {
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if (printk_ratelimit())
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printk("%s: abort: c: %d, s: %d, d: %d, r: %d.\n",
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dev->name, !!(dmacsr & HIFN_DMACSR_C_ABORT),
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!!(dmacsr & HIFN_DMACSR_S_ABORT),
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!!(dmacsr & HIFN_DMACSR_D_ABORT),
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!!(dmacsr & HIFN_DMACSR_R_ABORT));
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printk(KERN_WARNING "%s: abort: c: %d, s: %d, d: %d, r: %d.\n",
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dev->name, !!(dmacsr & HIFN_DMACSR_C_ABORT),
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!!(dmacsr & HIFN_DMACSR_S_ABORT),
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!!(dmacsr & HIFN_DMACSR_D_ABORT),
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!!(dmacsr & HIFN_DMACSR_R_ABORT));
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hifn_reset_dma(dev, 1);
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hifn_init_dma(dev);
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hifn_init_registers(dev);
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@ -2023,7 +2008,6 @@ static irqreturn_t hifn_interrupt(int irq, void *data)
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}
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tasklet_schedule(&dev->tasklet);
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hifn_clear_rings(dev);
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return IRQ_HANDLED;
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}
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@ -2037,21 +2021,25 @@ static void hifn_flush(struct hifn_device *dev)
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struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
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int i;
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spin_lock_irqsave(&dev->lock, flags);
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for (i=0; i<HIFN_D_RES_RSIZE; ++i) {
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struct hifn_desc *d = &dma->resr[i];
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if (dev->sa[i]) {
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hifn_process_ready(dev->sa[i],
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(d->l & __cpu_to_le32(HIFN_D_VALID))?-ENODEV:0);
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hifn_complete_sa(dev, i);
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}
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}
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spin_lock_irqsave(&dev->lock, flags);
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while ((async_req = crypto_dequeue_request(&dev->queue))) {
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ctx = crypto_tfm_ctx(async_req->tfm);
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req = container_of(async_req, struct ablkcipher_request, base);
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spin_unlock_irqrestore(&dev->lock, flags);
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hifn_process_ready(req, -ENODEV);
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spin_lock_irqsave(&dev->lock, flags);
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}
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spin_unlock_irqrestore(&dev->lock, flags);
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}
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@ -2568,7 +2556,7 @@ static void hifn_tasklet_callback(unsigned long data)
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* (like dev->success), but they are used in process
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* context or update is atomic (like setting dev->sa[i] to NULL).
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*/
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hifn_check_for_completion(dev, 0);
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hifn_clear_rings(dev, 0);
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if (dev->started < HIFN_QUEUE_LENGTH && dev->queue.qlen)
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hifn_process_queue(dev);
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