struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
struct nx_sg *in_sg;
- u64 to_process, leftover;
+ u64 to_process, leftover, total;
+ u32 max_sg_len;
+ unsigned long irq_flags;
int rc = 0;
- if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) {
- /* we've hit the nx chip previously and we're updating again,
- * so copy over the partial digest */
- memcpy(csbcpb->cpb.sha256.input_partial_digest,
- csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE);
- }
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
/* 2 cases for total data len:
- * 1: <= SHA256_BLOCK_SIZE: copy into state, return 0
- * 2: > SHA256_BLOCK_SIZE: process X blocks, copy in leftover
+ * 1: < SHA256_BLOCK_SIZE: copy into state, return 0
+ * 2: >= SHA256_BLOCK_SIZE: process X blocks, copy in leftover
*/
- if (len + sctx->count < SHA256_BLOCK_SIZE) {
+ total = sctx->count + len;
+ if (total < SHA256_BLOCK_SIZE) {
memcpy(sctx->buf + sctx->count, data, len);
sctx->count += len;
goto out;
}
- /* to_process: the SHA256_BLOCK_SIZE data chunk to process in this
- * update */
- to_process = (sctx->count + len) & ~(SHA256_BLOCK_SIZE - 1);
- leftover = (sctx->count + len) & (SHA256_BLOCK_SIZE - 1);
-
- if (sctx->count) {
- in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buf,
- sctx->count, nx_ctx->ap->sglen);
- in_sg = nx_build_sg_list(in_sg, (u8 *)data,
+ in_sg = nx_ctx->in_sg;
+ max_sg_len = min_t(u32, nx_driver.of.max_sg_len/sizeof(struct nx_sg),
+ nx_ctx->ap->sglen);
+
+ do {
+ /*
+ * to_process: the SHA256_BLOCK_SIZE data chunk to process in
+ * this update. This value is also restricted by the sg list
+ * limits.
+ */
+ to_process = min_t(u64, total, nx_ctx->ap->databytelen);
+ to_process = min_t(u64, to_process,
+ NX_PAGE_SIZE * (max_sg_len - 1));
+ to_process = to_process & ~(SHA256_BLOCK_SIZE - 1);
+ leftover = total - to_process;
+
+ if (sctx->count) {
+ in_sg = nx_build_sg_list(nx_ctx->in_sg,
+ (u8 *) sctx->buf,
+ sctx->count, max_sg_len);
+ }
+ in_sg = nx_build_sg_list(in_sg, (u8 *) data,
to_process - sctx->count,
- nx_ctx->ap->sglen);
+ max_sg_len);
nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) *
sizeof(struct nx_sg);
- } else {
- in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)data,
- to_process, nx_ctx->ap->sglen);
- nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) *
- sizeof(struct nx_sg);
- }
- NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
+ if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) {
+ /*
+ * we've hit the nx chip previously and we're updating
+ * again, so copy over the partial digest.
+ */
+ memcpy(csbcpb->cpb.sha256.input_partial_digest,
+ csbcpb->cpb.sha256.message_digest,
+ SHA256_DIGEST_SIZE);
+ }
- if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) {
- rc = -EINVAL;
- goto out;
- }
+ NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
+ if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) {
+ rc = -EINVAL;
+ goto out;
+ }
- rc = nx_hcall_sync(nx_ctx, &nx_ctx->op,
- desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP);
- if (rc)
- goto out;
+ rc = nx_hcall_sync(nx_ctx, &nx_ctx->op,
+ desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP);
+ if (rc)
+ goto out;
- atomic_inc(&(nx_ctx->stats->sha256_ops));
+ atomic_inc(&(nx_ctx->stats->sha256_ops));
+ csbcpb->cpb.sha256.message_bit_length += (u64)
+ (csbcpb->cpb.sha256.spbc * 8);
+
+ /* everything after the first update is continuation */
+ NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
+
+ total -= to_process;
+ data += to_process - sctx->count;
+ sctx->count = 0;
+ in_sg = nx_ctx->in_sg;
+ } while (leftover >= SHA256_BLOCK_SIZE);
/* copy the leftover back into the state struct */
if (leftover)
- memcpy(sctx->buf, data + len - leftover, leftover);
+ memcpy(sctx->buf, data, leftover);
sctx->count = leftover;
-
- csbcpb->cpb.sha256.message_bit_length += (u64)
- (csbcpb->cpb.sha256.spbc * 8);
-
- /* everything after the first update is continuation */
- NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
out:
+ spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
return rc;
}
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
struct nx_sg *in_sg, *out_sg;
+ u32 max_sg_len;
+ unsigned long irq_flags;
int rc;
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
+
+ max_sg_len = min_t(u32, nx_driver.of.max_sg_len, nx_ctx->ap->sglen);
if (NX_CPB_FDM(csbcpb) & NX_FDM_CONTINUATION) {
/* we've hit the nx chip previously, now we're finalizing,
csbcpb->cpb.sha256.message_bit_length += (u64)(sctx->count * 8);
in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buf,
- sctx->count, nx_ctx->ap->sglen);
+ sctx->count, max_sg_len);
out_sg = nx_build_sg_list(nx_ctx->out_sg, out, SHA256_DIGEST_SIZE,
- nx_ctx->ap->sglen);
+ max_sg_len);
nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
&(nx_ctx->stats->sha256_bytes));
memcpy(out, csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE);
out:
+ spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
return rc;
}
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
struct sha256_state *octx = out;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
octx->count = sctx->count +
(csbcpb->cpb.sha256.message_bit_length / 8);
octx->state[7] = SHA256_H7;
}
+ spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
return 0;
}
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
const struct sha256_state *ictx = in;
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&nx_ctx->lock, irq_flags);
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
}
+ spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
return 0;
}
projects / ~andy / linux / blobdiff