unsigned int exec_units;
unsigned int desc_types;
+ /* SEC Compatibility info */
+ unsigned long features;
+
/* next channel to be assigned next incoming descriptor */
atomic_t last_chan;
+ /* per-channel number of requests pending in channel h/w fifo */
+ atomic_t *submit_count;
+
/* per-channel request fifo */
struct talitos_request **fifo;
struct hwrng rng;
};
+/* .features flag */
+#define TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT 0x00000001
+
/*
* map virtual single (contiguous) pointer to h/w descriptor pointer
*/
spin_lock_irqsave(&priv->head_lock[ch], flags);
- head = priv->head[ch];
- request = &priv->fifo[ch][head];
-
- if (request->desc) {
- /* request queue is full */
+ if (!atomic_inc_not_zero(&priv->submit_count[ch])) {
+ /* h/w fifo is full */
spin_unlock_irqrestore(&priv->head_lock[ch], flags);
return -EAGAIN;
}
+ head = priv->head[ch];
+ request = &priv->fifo[ch][head];
+
/* map descriptor and save caller data */
request->dma_desc = dma_map_single(dev, desc, sizeof(*desc),
DMA_BIDIRECTIONAL);
priv->tail[ch] = (tail + 1) & (priv->fifo_len - 1);
spin_unlock_irqrestore(&priv->tail_lock[ch], flags);
+
+ atomic_dec(&priv->submit_count[ch]);
+
saved_req.callback(dev, saved_req.desc, saved_req.context,
status);
/* channel may resume processing in single desc error case */
/* copy the generated ICV to dst */
if (edesc->dma_len) {
icvdata = &edesc->link_tbl[edesc->src_nents +
- edesc->dst_nents + 1];
+ edesc->dst_nents + 2];
sg = sg_last(areq->dst, edesc->dst_nents);
memcpy((char *)sg_virt(sg) + sg->length - ctx->authsize,
icvdata, ctx->authsize);
/* auth check */
if (edesc->dma_len)
icvdata = &edesc->link_tbl[edesc->src_nents +
- edesc->dst_nents + 1];
+ edesc->dst_nents + 2];
else
icvdata = &edesc->link_tbl[0];
/* adjust (decrease) last one (or two) entry's len to cryptlen */
link_tbl_ptr--;
- while (link_tbl_ptr->len <= (-cryptlen)) {
+ while (be16_to_cpu(link_tbl_ptr->len) <= (-cryptlen)) {
/* Empty this entry, and move to previous one */
cryptlen += be16_to_cpu(link_tbl_ptr->len);
link_tbl_ptr->len = 0;
unsigned int cryptlen = areq->cryptlen;
unsigned int authsize = ctx->authsize;
unsigned int ivsize;
- int sg_count;
+ int sg_count, ret;
/* hmac key */
map_single_talitos_ptr(dev, &desc->ptr[0], ctx->authkeylen, &ctx->key,
sg_count = sg_to_link_tbl(areq->src, sg_count, cryptlen,
&edesc->link_tbl[0]);
if (sg_count > 1) {
+ struct talitos_ptr *link_tbl_ptr =
+ &edesc->link_tbl[sg_count-1];
+ struct scatterlist *sg;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+
desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP;
desc->ptr[4].ptr = cpu_to_be32(edesc->dma_link_tbl);
dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl,
edesc->dma_len, DMA_BIDIRECTIONAL);
+ /* If necessary for this SEC revision,
+ * add a link table entry for ICV.
+ */
+ if ((priv->features &
+ TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT) &&
+ (edesc->desc.hdr & DESC_HDR_MODE0_ENCRYPT) == 0) {
+ link_tbl_ptr->j_extent = 0;
+ link_tbl_ptr++;
+ link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
+ link_tbl_ptr->len = cpu_to_be16(authsize);
+ sg = sg_last(areq->src, edesc->src_nents ? : 1);
+ link_tbl_ptr->ptr = cpu_to_be32(
+ (char *)sg_dma_address(sg)
+ + sg->length - authsize);
+ }
} else {
/* Only one segment now, so no link tbl needed */
desc->ptr[4].ptr = cpu_to_be32(sg_dma_address(areq->src));
desc->ptr[5].ptr = cpu_to_be32(sg_dma_address(areq->dst));
} else {
struct talitos_ptr *link_tbl_ptr =
- &edesc->link_tbl[edesc->src_nents];
- struct scatterlist *sg;
+ &edesc->link_tbl[edesc->src_nents + 1];
desc->ptr[5].ptr = cpu_to_be32((struct talitos_ptr *)
edesc->dma_link_tbl +
- edesc->src_nents);
+ edesc->src_nents + 1);
if (areq->src == areq->dst) {
memcpy(link_tbl_ptr, &edesc->link_tbl[0],
edesc->src_nents * sizeof(struct talitos_ptr));
sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen,
link_tbl_ptr);
}
+ /* Add an entry to the link table for ICV data */
link_tbl_ptr += sg_count - 1;
-
- /* handle case where sg_last contains the ICV exclusively */
- sg = sg_last(areq->dst, edesc->dst_nents);
- if (sg->length == ctx->authsize)
- link_tbl_ptr--;
-
link_tbl_ptr->j_extent = 0;
+ sg_count++;
link_tbl_ptr++;
link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
link_tbl_ptr->len = cpu_to_be16(authsize);
link_tbl_ptr->ptr = cpu_to_be32((struct talitos_ptr *)
edesc->dma_link_tbl +
edesc->src_nents +
- edesc->dst_nents + 1);
+ edesc->dst_nents + 2);
desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP;
dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl,
map_single_talitos_ptr(dev, &desc->ptr[6], ivsize, ctx->iv, 0,
DMA_FROM_DEVICE);
- return talitos_submit(dev, desc, callback, areq);
+ ret = talitos_submit(dev, desc, callback, areq);
+ if (ret != -EINPROGRESS) {
+ ipsec_esp_unmap(dev, edesc, areq);
+ kfree(edesc);
+ }
+ return ret;
}
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct ipsec_esp_edesc *edesc;
int src_nents, dst_nents, alloc_len, dma_len;
+ gfp_t flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
+ GFP_ATOMIC;
if (areq->cryptlen + ctx->authsize > TALITOS_MAX_DATA_LEN) {
dev_err(ctx->dev, "cryptlen exceeds h/w max limit\n");
dst_nents = src_nents;
} else {
dst_nents = sg_count(areq->dst, areq->cryptlen + ctx->authsize);
- dst_nents = (dst_nents == 1) ? 0 : src_nents;
+ dst_nents = (dst_nents == 1) ? 0 : dst_nents;
}
/*
* allocate space for base edesc plus the link tables,
- * allowing for a separate entry for the generated ICV (+ 1),
+ * allowing for two separate entries for ICV and generated ICV (+ 2),
* and the ICV data itself
*/
alloc_len = sizeof(struct ipsec_esp_edesc);
if (src_nents || dst_nents) {
- dma_len = (src_nents + dst_nents + 1) *
+ dma_len = (src_nents + dst_nents + 2) *
sizeof(struct talitos_ptr) + ctx->authsize;
alloc_len += dma_len;
} else {
alloc_len += icv_stashing ? ctx->authsize : 0;
}
- edesc = kmalloc(alloc_len, GFP_DMA);
+ edesc = kmalloc(alloc_len, GFP_DMA | flags);
if (!edesc) {
dev_err(ctx->dev, "could not allocate edescriptor\n");
return ERR_PTR(-ENOMEM);
/* stash incoming ICV for later cmp with ICV generated by the h/w */
if (edesc->dma_len)
icvdata = &edesc->link_tbl[edesc->src_nents +
- edesc->dst_nents + 1];
+ edesc->dst_nents + 2];
else
icvdata = &edesc->link_tbl[0];
edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT;
memcpy(req->giv, ctx->iv, crypto_aead_ivsize(authenc));
+ /* avoid consecutive packets going out with same IV */
+ *(__be64 *)req->giv ^= cpu_to_be64(req->seq);
return ipsec_esp(edesc, areq, req->giv, req->seq,
ipsec_esp_encrypt_done);
if (hw_supports(dev, DESC_HDR_SEL0_RNG))
talitos_unregister_rng(dev);
+ kfree(priv->submit_count);
kfree(priv->tail);
kfree(priv->head);
priv->ofdev = ofdev;
+ INIT_LIST_HEAD(&priv->alg_list);
+
tasklet_init(&priv->done_task, talitos_done, (unsigned long)dev);
tasklet_init(&priv->error_task, talitos_error, (unsigned long)dev);
goto err_out;
}
- of_node_put(np);
- np = NULL;
+ if (of_device_is_compatible(np, "fsl,sec3.0"))
+ priv->features |= TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT;
priv->head_lock = kmalloc(sizeof(spinlock_t) * priv->num_channels,
GFP_KERNEL);
}
}
+ priv->submit_count = kmalloc(sizeof(atomic_t) * priv->num_channels,
+ GFP_KERNEL);
+ if (!priv->submit_count) {
+ dev_err(dev, "failed to allocate fifo submit count space\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+ for (i = 0; i < priv->num_channels; i++)
+ atomic_set(&priv->submit_count[i], -priv->chfifo_len);
+
priv->head = kzalloc(sizeof(int) * priv->num_channels, GFP_KERNEL);
priv->tail = kzalloc(sizeof(int) * priv->num_channels, GFP_KERNEL);
if (!priv->head || !priv->tail) {
}
/* register crypto algorithms the device supports */
- INIT_LIST_HEAD(&priv->alg_list);
-
for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
if (hw_supports(dev, driver_algs[i].desc_hdr_template)) {
struct talitos_crypto_alg *t_alg;
err_out:
talitos_remove(ofdev);
- if (np)
- of_node_put(np);
return err;
}
git.openpandora.org / pandora-kernel.git / blobdiff