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authorGiovanni Cabiddu <giovanni.cabiddu@intel.com>2022-11-28 15:21:16 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2022-12-09 13:44:59 +0300
commitcf692906bd61af2eec06a32a83d2a8ec3acf3548 (patch)
treee2375d6358d180ec0e17ff2c66ed90222baa7e96 /drivers/crypto
parent36ebc7472afeb58f1eb1d4c1f0546b9e98acea46 (diff)
downloadlinux-cf692906bd61af2eec06a32a83d2a8ec3acf3548.tar.xz
crypto: qat - extend buffer list interface
The compression service requires an additional pre-allocated buffer for each destination scatter list. Extend the function qat_alg_sgl_to_bufl() to take an additional structure that contains the dma address and the size of the extra buffer which will be appended in the destination FW SGL. The logic that unmaps buffers in qat_alg_free_bufl() has been changed to start unmapping from buffer 0 instead of skipping the initial buffers num_buff - num_mapped_bufs as that functionality was not used in the code. Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/qat/qat_common/qat_algs.c8
-rw-r--r--drivers/crypto/qat/qat_common/qat_bl.c58
-rw-r--r--drivers/crypto/qat/qat_common/qat_bl.h6
3 files changed, 54 insertions, 18 deletions
diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c
index dfa65e42db78..b4b9f0aa59b9 100644
--- a/drivers/crypto/qat/qat_common/qat_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_algs.c
@@ -800,7 +800,7 @@ static int qat_alg_aead_dec(struct aead_request *areq)
return -EINVAL;
ret = qat_bl_sgl_to_bufl(ctx->inst->accel_dev, areq->src, areq->dst,
- &qat_req->buf, f);
+ &qat_req->buf, NULL, f);
if (unlikely(ret))
return ret;
@@ -844,7 +844,7 @@ static int qat_alg_aead_enc(struct aead_request *areq)
return -EINVAL;
ret = qat_bl_sgl_to_bufl(ctx->inst->accel_dev, areq->src, areq->dst,
- &qat_req->buf, f);
+ &qat_req->buf, NULL, f);
if (unlikely(ret))
return ret;
@@ -1030,7 +1030,7 @@ static int qat_alg_skcipher_encrypt(struct skcipher_request *req)
return 0;
ret = qat_bl_sgl_to_bufl(ctx->inst->accel_dev, req->src, req->dst,
- &qat_req->buf, f);
+ &qat_req->buf, NULL, f);
if (unlikely(ret))
return ret;
@@ -1097,7 +1097,7 @@ static int qat_alg_skcipher_decrypt(struct skcipher_request *req)
return 0;
ret = qat_bl_sgl_to_bufl(ctx->inst->accel_dev, req->src, req->dst,
- &qat_req->buf, f);
+ &qat_req->buf, NULL, f);
if (unlikely(ret))
return ret;
diff --git a/drivers/crypto/qat/qat_common/qat_bl.c b/drivers/crypto/qat/qat_common/qat_bl.c
index c32b12d386f0..221a4eb610a3 100644
--- a/drivers/crypto/qat/qat_common/qat_bl.c
+++ b/drivers/crypto/qat/qat_common/qat_bl.c
@@ -35,10 +35,7 @@ void qat_bl_free_bufl(struct adf_accel_dev *accel_dev,
kfree(bl);
if (blp != blpout) {
- /* If out of place operation dma unmap only data */
- int bufless = blout->num_bufs - blout->num_mapped_bufs;
-
- for (i = bufless; i < blout->num_bufs; i++) {
+ for (i = 0; i < blout->num_mapped_bufs; i++) {
dma_unmap_single(dev, blout->bufers[i].addr,
blout->bufers[i].len,
DMA_FROM_DEVICE);
@@ -50,11 +47,13 @@ void qat_bl_free_bufl(struct adf_accel_dev *accel_dev,
}
}
-int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
- struct scatterlist *sgl,
- struct scatterlist *sglout,
- struct qat_request_buffs *buf,
- gfp_t flags)
+static int __qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
+ struct scatterlist *sgl,
+ struct scatterlist *sglout,
+ struct qat_request_buffs *buf,
+ dma_addr_t extra_dst_buff,
+ size_t sz_extra_dst_buff,
+ gfp_t flags)
{
struct device *dev = &GET_DEV(accel_dev);
int i, sg_nctr = 0;
@@ -86,7 +85,7 @@ int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
bufl_dma_dir = sgl != sglout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
- for_each_sg(sgl, sg, n, i)
+ for (i = 0; i < n; i++)
bufl->bufers[i].addr = DMA_MAPPING_ERROR;
for_each_sg(sgl, sg, n, i) {
@@ -113,8 +112,10 @@ int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
/* Handle out of place operation */
if (sgl != sglout) {
struct qat_alg_buf *bufers;
+ int extra_buff = extra_dst_buff ? 1 : 0;
+ int n_sglout = sg_nents(sglout);
- n = sg_nents(sglout);
+ n = n_sglout + extra_buff;
sz_out = struct_size(buflout, bufers, n);
sg_nctr = 0;
@@ -129,10 +130,10 @@ int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
}
bufers = buflout->bufers;
- for_each_sg(sglout, sg, n, i)
+ for (i = 0; i < n; i++)
bufers[i].addr = DMA_MAPPING_ERROR;
- for_each_sg(sglout, sg, n, i) {
+ for_each_sg(sglout, sg, n_sglout, i) {
int y = sg_nctr;
if (!sg->length)
@@ -146,7 +147,13 @@ int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
bufers[y].len = sg->length;
sg_nctr++;
}
+ if (extra_buff) {
+ bufers[sg_nctr].addr = extra_dst_buff;
+ bufers[sg_nctr].len = sz_extra_dst_buff;
+ }
+
buflout->num_bufs = sg_nctr;
+ buflout->num_bufs += extra_buff;
buflout->num_mapped_bufs = sg_nctr;
bloutp = dma_map_single(dev, buflout, sz_out, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(dev, bloutp)))
@@ -166,11 +173,14 @@ err_out:
dma_unmap_single(dev, bloutp, sz_out, DMA_TO_DEVICE);
n = sg_nents(sglout);
- for (i = 0; i < n; i++)
+ for (i = 0; i < n; i++) {
+ if (buflout->bufers[i].addr == extra_dst_buff)
+ break;
if (!dma_mapping_error(dev, buflout->bufers[i].addr))
dma_unmap_single(dev, buflout->bufers[i].addr,
buflout->bufers[i].len,
DMA_FROM_DEVICE);
+ }
if (!buf->sgl_dst_valid)
kfree(buflout);
@@ -192,3 +202,23 @@ err_in:
dev_err(dev, "Failed to map buf for dma\n");
return -ENOMEM;
}
+
+int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
+ struct scatterlist *sgl,
+ struct scatterlist *sglout,
+ struct qat_request_buffs *buf,
+ struct qat_sgl_to_bufl_params *params,
+ gfp_t flags)
+{
+ dma_addr_t extra_dst_buff = 0;
+ size_t sz_extra_dst_buff = 0;
+
+ if (params) {
+ extra_dst_buff = params->extra_dst_buff;
+ sz_extra_dst_buff = params->sz_extra_dst_buff;
+ }
+
+ return __qat_bl_sgl_to_bufl(accel_dev, sgl, sglout, buf,
+ extra_dst_buff, sz_extra_dst_buff,
+ flags);
+}
diff --git a/drivers/crypto/qat/qat_common/qat_bl.h b/drivers/crypto/qat/qat_common/qat_bl.h
index 1c534c57a36b..0c174fee9e64 100644
--- a/drivers/crypto/qat/qat_common/qat_bl.h
+++ b/drivers/crypto/qat/qat_common/qat_bl.h
@@ -38,12 +38,18 @@ struct qat_request_buffs {
struct qat_alg_fixed_buf_list sgl_dst;
};
+struct qat_sgl_to_bufl_params {
+ dma_addr_t extra_dst_buff;
+ size_t sz_extra_dst_buff;
+};
+
void qat_bl_free_bufl(struct adf_accel_dev *accel_dev,
struct qat_request_buffs *buf);
int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev,
struct scatterlist *sgl,
struct scatterlist *sglout,
struct qat_request_buffs *buf,
+ struct qat_sgl_to_bufl_params *params,
gfp_t flags);
#endif