1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/crypto/intel/qat/qat_common/qat_bl.h b/drivers/crypto/intel/qat/qat_common/qat_bl.h
new file mode 100644
index 000000000000..2827d5055d3c
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/qat_bl.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2014 - 2022 Intel Corporation */
+#ifndef QAT_BL_H
+#define QAT_BL_H
+#include <linux/crypto.h>
+#include <linux/scatterlist.h>
+#include <linux/types.h>
+
+#define QAT_MAX_BUFF_DESC	4
+
+struct qat_alg_buf {
+	u32 len;
+	u32 resrvd;
+	u64 addr;
+} __packed;
+
+struct qat_alg_buf_list {
+	/* New members must be added within the __struct_group() macro below. */
+	__struct_group(qat_alg_buf_list_hdr, hdr, __packed,
+		u64 resrvd;
+		u32 num_bufs;
+		u32 num_mapped_bufs;
+	);
+	struct qat_alg_buf buffers[];
+} __packed;
+static_assert(offsetof(struct qat_alg_buf_list, buffers) == sizeof(struct qat_alg_buf_list_hdr),
+	      "struct member likely outside of __struct_group()");
+
+struct qat_alg_fixed_buf_list {
+	struct qat_alg_buf_list_hdr sgl_hdr;
+	struct qat_alg_buf descriptors[QAT_MAX_BUFF_DESC];
+} __packed __aligned(64);
+
+struct qat_request_buffs {
+	struct qat_alg_buf_list *bl;
+	dma_addr_t blp;
+	struct qat_alg_buf_list *blout;
+	dma_addr_t bloutp;
+	size_t sz;
+	size_t sz_out;
+	bool sgl_src_valid;
+	bool sgl_dst_valid;
+	struct qat_alg_fixed_buf_list sgl_src;
+	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;
+	unsigned int sskip;
+	unsigned int dskip;
+};
+
+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);
+
+static inline gfp_t qat_algs_alloc_flags(struct crypto_async_request *req)
+{
+	return req->flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC;
+}
+
+#endif