Move the logic that maps, unmaps and converts scatterlists into QAT
bufferlists from qat_algs.c to a new module, qat_bl.
This is to allow reuse of the logic by the data compression service.
This commit does not implement any functional change.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@xxxxxxxxx>
Reviewed-by: Adam Guerin <adam.guerin@xxxxxxxxx>
---
drivers/crypto/qat/qat_common/Makefile | 3 +-
drivers/crypto/qat/qat_common/qat_algs.c | 184 +--------------------
drivers/crypto/qat/qat_common/qat_bl.c | 194 +++++++++++++++++++++++
drivers/crypto/qat/qat_common/qat_bl.h | 17 ++
4 files changed, 214 insertions(+), 184 deletions(-)
create mode 100644 drivers/crypto/qat/qat_common/qat_bl.c
create mode 100644 drivers/crypto/qat/qat_common/qat_bl.h
diff --git a/drivers/crypto/qat/qat_common/Makefile b/drivers/crypto/qat/qat_common/Makefile
index 80919cfcc29d..b0587d03eac2 100644
--- a/drivers/crypto/qat/qat_common/Makefile
+++ b/drivers/crypto/qat/qat_common/Makefile
@@ -19,7 +19,8 @@ intel_qat-objs := adf_cfg.o \
qat_asym_algs.o \
qat_algs_send.o \
qat_uclo.o \
- qat_hal.o
+ qat_hal.o \
+ qat_bl.o
intel_qat-$(CONFIG_DEBUG_FS) += adf_transport_debug.o
intel_qat-$(CONFIG_PCI_IOV) += adf_sriov.o adf_vf_isr.o adf_pfvf_utils.o \
diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c
index cad9c58caab1..2ee4fa64032f 100644
--- a/drivers/crypto/qat/qat_common/qat_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_algs.c
@@ -23,6 +23,7 @@
#include "icp_qat_hw.h"
#include "icp_qat_fw.h"
#include "icp_qat_fw_la.h"
+#include "qat_bl.h"
#define QAT_AES_HW_CONFIG_ENC(alg, mode) \
ICP_QAT_HW_CIPHER_CONFIG_BUILD(mode, alg, \
@@ -663,189 +664,6 @@ static int qat_alg_aead_setkey(struct crypto_aead *tfm, const u8 *key,
return qat_alg_aead_newkey(tfm, key, keylen);
}
-static void qat_alg_free_bufl(struct qat_crypto_instance *inst,
- struct qat_crypto_request *qat_req)
-{
- struct device *dev = &GET_DEV(inst->accel_dev);
- struct qat_alg_buf_list *bl = qat_req->buf.bl;
- struct qat_alg_buf_list *blout = qat_req->buf.blout;
- dma_addr_t blp = qat_req->buf.blp;
- dma_addr_t blpout = qat_req->buf.bloutp;
- size_t sz = qat_req->buf.sz;
- size_t sz_out = qat_req->buf.sz_out;
- int bl_dma_dir;
- int i;
-
- bl_dma_dir = blp != blpout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
-
- for (i = 0; i < bl->num_bufs; i++)
- dma_unmap_single(dev, bl->bufers[i].addr,
- bl->bufers[i].len, bl_dma_dir);
-
- dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE);
-
- if (!qat_req->buf.sgl_src_valid)
- 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++) {
- dma_unmap_single(dev, blout->bufers[i].addr,
- blout->bufers[i].len,
- DMA_FROM_DEVICE);
- }
- dma_unmap_single(dev, blpout, sz_out, DMA_TO_DEVICE);
-
- if (!qat_req->buf.sgl_dst_valid)
- kfree(blout);
- }
-}
-
-static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
- struct scatterlist *sgl,
- struct scatterlist *sglout,
- struct qat_crypto_request *qat_req,
- gfp_t flags)
-{
- struct device *dev = &GET_DEV(inst->accel_dev);
- int i, sg_nctr = 0;
- int n = sg_nents(sgl);
- struct qat_alg_buf_list *bufl;
- struct qat_alg_buf_list *buflout = NULL;
- dma_addr_t blp = DMA_MAPPING_ERROR;
- dma_addr_t bloutp = DMA_MAPPING_ERROR;
- struct scatterlist *sg;
- size_t sz_out, sz = struct_size(bufl, bufers, n);
- int node = dev_to_node(&GET_DEV(inst->accel_dev));
- int bufl_dma_dir;
-
- if (unlikely(!n))
- return -EINVAL;
-
- qat_req->buf.sgl_src_valid = false;
- qat_req->buf.sgl_dst_valid = false;
-
- if (n > QAT_MAX_BUFF_DESC) {
- bufl = kzalloc_node(sz, flags, node);
- if (unlikely(!bufl))
- return -ENOMEM;
- } else {
- bufl = &qat_req->buf.sgl_src.sgl_hdr;
- memset(bufl, 0, sizeof(struct qat_alg_buf_list));
- qat_req->buf.sgl_src_valid = true;
- }
-
- bufl_dma_dir = sgl != sglout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
-
- for_each_sg(sgl, sg, n, i)
- bufl->bufers[i].addr = DMA_MAPPING_ERROR;
-
- for_each_sg(sgl, sg, n, i) {
- int y = sg_nctr;
-
- if (!sg->length)
- continue;
-
- bufl->bufers[y].addr = dma_map_single(dev, sg_virt(sg),
- sg->length,
- bufl_dma_dir);
- bufl->bufers[y].len = sg->length;
- if (unlikely(dma_mapping_error(dev, bufl->bufers[y].addr)))
- goto err_in;
- sg_nctr++;
- }
- bufl->num_bufs = sg_nctr;
- blp = dma_map_single(dev, bufl, sz, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(dev, blp)))
- goto err_in;
- qat_req->buf.bl = bufl;
- qat_req->buf.blp = blp;
- qat_req->buf.sz = sz;
- /* Handle out of place operation */
- if (sgl != sglout) {
- struct qat_alg_buf *bufers;
-
- n = sg_nents(sglout);
- sz_out = struct_size(buflout, bufers, n);
- sg_nctr = 0;
-
- if (n > QAT_MAX_BUFF_DESC) {
- buflout = kzalloc_node(sz_out, flags, node);
- if (unlikely(!buflout))
- goto err_in;
- } else {
- buflout = &qat_req->buf.sgl_dst.sgl_hdr;
- memset(buflout, 0, sizeof(struct qat_alg_buf_list));
- qat_req->buf.sgl_dst_valid = true;
- }
-
- bufers = buflout->bufers;
- for_each_sg(sglout, sg, n, i)
- bufers[i].addr = DMA_MAPPING_ERROR;
-
- for_each_sg(sglout, sg, n, i) {
- int y = sg_nctr;
-
- if (!sg->length)
- continue;
-
- bufers[y].addr = dma_map_single(dev, sg_virt(sg),
- sg->length,
- DMA_FROM_DEVICE);
- if (unlikely(dma_mapping_error(dev, bufers[y].addr)))
- goto err_out;
- bufers[y].len = sg->length;
- sg_nctr++;
- }
- buflout->num_bufs = sg_nctr;
- buflout->num_mapped_bufs = sg_nctr;
- bloutp = dma_map_single(dev, buflout, sz_out, DMA_TO_DEVICE);
- if (unlikely(dma_mapping_error(dev, bloutp)))
- goto err_out;
- qat_req->buf.blout = buflout;
- qat_req->buf.bloutp = bloutp;
- qat_req->buf.sz_out = sz_out;
- } else {
- /* Otherwise set the src and dst to the same address */
- qat_req->buf.bloutp = qat_req->buf.blp;
- qat_req->buf.sz_out = 0;
- }
- return 0;
-
-err_out:
- if (!dma_mapping_error(dev, bloutp))
- dma_unmap_single(dev, bloutp, sz_out, DMA_TO_DEVICE);
-
- n = sg_nents(sglout);
- for (i = 0; i < n; i++)
- 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 (!qat_req->buf.sgl_dst_valid)
- kfree(buflout);
-
-err_in:
- if (!dma_mapping_error(dev, blp))
- dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE);
-
- n = sg_nents(sgl);
- for (i = 0; i < n; i++)
- if (!dma_mapping_error(dev, bufl->bufers[i].addr))
- dma_unmap_single(dev, bufl->bufers[i].addr,
- bufl->bufers[i].len,
- bufl_dma_dir);
-
- if (!qat_req->buf.sgl_src_valid)
- kfree(bufl);
-
- dev_err(dev, "Failed to map buf for dma\n");
- return -ENOMEM;
-}
-
static void qat_aead_alg_callback(struct icp_qat_fw_la_resp *qat_resp,
struct qat_crypto_request *qat_req)
{
diff --git a/drivers/crypto/qat/qat_common/qat_bl.c b/drivers/crypto/qat/qat_common/qat_bl.c
new file mode 100644
index 000000000000..6d0a39f8ce10
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/qat_bl.c
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2014 - 2022 Intel Corporation */
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include "adf_accel_devices.h"
+#include "qat_bl.h"
+#include "qat_crypto.h"
+
+void qat_alg_free_bufl(struct qat_crypto_instance *inst,
+ struct qat_crypto_request *qat_req)
+{
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ struct qat_alg_buf_list *bl = qat_req->buf.bl;
+ struct qat_alg_buf_list *blout = qat_req->buf.blout;
+ dma_addr_t blp = qat_req->buf.blp;
+ dma_addr_t blpout = qat_req->buf.bloutp;
+ size_t sz = qat_req->buf.sz;
+ size_t sz_out = qat_req->buf.sz_out;
+ int bl_dma_dir;
+ int i;
+
+ bl_dma_dir = blp != blpout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
+
+ for (i = 0; i < bl->num_bufs; i++)
+ dma_unmap_single(dev, bl->bufers[i].addr,
+ bl->bufers[i].len, bl_dma_dir);
+
+ dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE);
+
+ if (!qat_req->buf.sgl_src_valid)
+ 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++) {
+ dma_unmap_single(dev, blout->bufers[i].addr,
+ blout->bufers[i].len,
+ DMA_FROM_DEVICE);
+ }
+ dma_unmap_single(dev, blpout, sz_out, DMA_TO_DEVICE);
+
+ if (!qat_req->buf.sgl_dst_valid)
+ kfree(blout);
+ }
+}
+
+int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
+ struct scatterlist *sgl,
+ struct scatterlist *sglout,
+ struct qat_crypto_request *qat_req,
+ gfp_t flags)
+{
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ int i, sg_nctr = 0;
+ int n = sg_nents(sgl);
+ struct qat_alg_buf_list *bufl;
+ struct qat_alg_buf_list *buflout = NULL;
+ dma_addr_t blp = DMA_MAPPING_ERROR;
+ dma_addr_t bloutp = DMA_MAPPING_ERROR;
+ struct scatterlist *sg;
+ size_t sz_out, sz = struct_size(bufl, bufers, n);
+ int node = dev_to_node(&GET_DEV(inst->accel_dev));
+ int bufl_dma_dir;
+
+ if (unlikely(!n))
+ return -EINVAL;
+
+ qat_req->buf.sgl_src_valid = false;
+ qat_req->buf.sgl_dst_valid = false;
+
+ if (n > QAT_MAX_BUFF_DESC) {
+ bufl = kzalloc_node(sz, flags, node);
+ if (unlikely(!bufl))
+ return -ENOMEM;
+ } else {
+ bufl = &qat_req->buf.sgl_src.sgl_hdr;
+ memset(bufl, 0, sizeof(struct qat_alg_buf_list));
+ qat_req->buf.sgl_src_valid = true;
+ }
+
+ bufl_dma_dir = sgl != sglout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
+
+ for_each_sg(sgl, sg, n, i)
+ bufl->bufers[i].addr = DMA_MAPPING_ERROR;
+
+ for_each_sg(sgl, sg, n, i) {
+ int y = sg_nctr;
+
+ if (!sg->length)
+ continue;
+
+ bufl->bufers[y].addr = dma_map_single(dev, sg_virt(sg),
+ sg->length,
+ bufl_dma_dir);
+ bufl->bufers[y].len = sg->length;
+ if (unlikely(dma_mapping_error(dev, bufl->bufers[y].addr)))
+ goto err_in;
+ sg_nctr++;
+ }
+ bufl->num_bufs = sg_nctr;
+ blp = dma_map_single(dev, bufl, sz, DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(dev, blp)))
+ goto err_in;
+ qat_req->buf.bl = bufl;
+ qat_req->buf.blp = blp;
+ qat_req->buf.sz = sz;
+ /* Handle out of place operation */
+ if (sgl != sglout) {
+ struct qat_alg_buf *bufers;
+
+ n = sg_nents(sglout);
+ sz_out = struct_size(buflout, bufers, n);
+ sg_nctr = 0;
+
+ if (n > QAT_MAX_BUFF_DESC) {
+ buflout = kzalloc_node(sz_out, flags, node);
+ if (unlikely(!buflout))
+ goto err_in;
+ } else {
+ buflout = &qat_req->buf.sgl_dst.sgl_hdr;
+ memset(buflout, 0, sizeof(struct qat_alg_buf_list));
+ qat_req->buf.sgl_dst_valid = true;
+ }
+
+ bufers = buflout->bufers;
+ for_each_sg(sglout, sg, n, i)
+ bufers[i].addr = DMA_MAPPING_ERROR;
+
+ for_each_sg(sglout, sg, n, i) {
+ int y = sg_nctr;
+
+ if (!sg->length)
+ continue;
+
+ bufers[y].addr = dma_map_single(dev, sg_virt(sg),
+ sg->length,
+ DMA_FROM_DEVICE);
+ if (unlikely(dma_mapping_error(dev, bufers[y].addr)))
+ goto err_out;
+ bufers[y].len = sg->length;
+ sg_nctr++;
+ }
+ buflout->num_bufs = sg_nctr;
+ buflout->num_mapped_bufs = sg_nctr;
+ bloutp = dma_map_single(dev, buflout, sz_out, DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(dev, bloutp)))
+ goto err_out;
+ qat_req->buf.blout = buflout;
+ qat_req->buf.bloutp = bloutp;
+ qat_req->buf.sz_out = sz_out;
+ } else {
+ /* Otherwise set the src and dst to the same address */
+ qat_req->buf.bloutp = qat_req->buf.blp;
+ qat_req->buf.sz_out = 0;
+ }
+ return 0;
+
+err_out:
+ if (!dma_mapping_error(dev, bloutp))
+ dma_unmap_single(dev, bloutp, sz_out, DMA_TO_DEVICE);
+
+ n = sg_nents(sglout);
+ for (i = 0; i < n; i++)
+ 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 (!qat_req->buf.sgl_dst_valid)
+ kfree(buflout);
+
+err_in:
+ if (!dma_mapping_error(dev, blp))
+ dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE);
+
+ n = sg_nents(sgl);
+ for (i = 0; i < n; i++)
+ if (!dma_mapping_error(dev, bufl->bufers[i].addr))
+ dma_unmap_single(dev, bufl->bufers[i].addr,
+ bufl->bufers[i].len,
+ bufl_dma_dir);
+
+ if (!qat_req->buf.sgl_src_valid)
+ kfree(bufl);
+
+ dev_err(dev, "Failed to map buf for dma\n");
+ return -ENOMEM;
+}
diff --git a/drivers/crypto/qat/qat_common/qat_bl.h b/drivers/crypto/qat/qat_common/qat_bl.h
new file mode 100644
index 000000000000..7a916f1ec645
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/qat_bl.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2014 - 2022 Intel Corporation */
+#ifndef QAT_BL_H
+#define QAT_BL_H
+#include <linux/scatterlist.h>
+#include <linux/types.h>
+#include "qat_crypto.h"
+
+void qat_alg_free_bufl(struct qat_crypto_instance *inst,
+ struct qat_crypto_request *qat_req);
+int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
+ struct scatterlist *sgl,
+ struct scatterlist *sglout,
+ struct qat_crypto_request *qat_req,
+ gfp_t flags);
+
+#endif
--
2.38.1
