1 files changed, 173 insertions, 0 deletions
diff --git a/drivers/crypto/intel/iaa/iaa_crypto.h b/drivers/crypto/intel/iaa/iaa_crypto.h
new file mode 100644
index 000000000000..014420f7beb0
--- /dev/null
+++ b/drivers/crypto/intel/iaa/iaa_crypto.h
@@ -0,0 +1,173 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
+
+#ifndef __IAA_CRYPTO_H__
+#define __IAA_CRYPTO_H__
+
+#include <linux/crypto.h>
+#include <linux/idxd.h>
+#include <uapi/linux/idxd.h>
+
+#define IDXD_SUBDRIVER_NAME		"crypto"
+
+#define IAA_DECOMP_ENABLE		BIT(0)
+#define IAA_DECOMP_FLUSH_OUTPUT		BIT(1)
+#define IAA_DECOMP_CHECK_FOR_EOB	BIT(2)
+#define IAA_DECOMP_STOP_ON_EOB		BIT(3)
+#define IAA_DECOMP_SUPPRESS_OUTPUT	BIT(9)
+
+#define IAA_COMP_FLUSH_OUTPUT		BIT(1)
+#define IAA_COMP_APPEND_EOB		BIT(2)
+
+#define IAA_COMPLETION_TIMEOUT		1000000
+
+#define IAA_ANALYTICS_ERROR		0x0a
+#define IAA_ERROR_DECOMP_BUF_OVERFLOW	0x0b
+#define IAA_ERROR_COMP_BUF_OVERFLOW	0x19
+#define IAA_ERROR_WATCHDOG_EXPIRED	0x24
+
+#define IAA_COMP_MODES_MAX		2
+
+#define FIXED_HDR			0x2
+#define FIXED_HDR_SIZE			3
+
+#define IAA_COMP_FLAGS			(IAA_COMP_FLUSH_OUTPUT | \
+					 IAA_COMP_APPEND_EOB)
+
+#define IAA_DECOMP_FLAGS		(IAA_DECOMP_ENABLE |	   \
+					 IAA_DECOMP_FLUSH_OUTPUT | \
+					 IAA_DECOMP_CHECK_FOR_EOB | \
+					 IAA_DECOMP_STOP_ON_EOB)
+
+/* Representation of IAA workqueue */
+struct iaa_wq {
+	struct list_head	list;
+
+	struct idxd_wq		*wq;
+	int			ref;
+	bool			remove;
+
+	struct iaa_device	*iaa_device;
+
+	u64			comp_calls;
+	u64			comp_bytes;
+	u64			decomp_calls;
+	u64			decomp_bytes;
+};
+
+struct iaa_device_compression_mode {
+	const char			*name;
+
+	struct aecs_comp_table_record	*aecs_comp_table;
+	struct aecs_decomp_table_record	*aecs_decomp_table;
+
+	dma_addr_t			aecs_comp_table_dma_addr;
+	dma_addr_t			aecs_decomp_table_dma_addr;
+};
+
+/* Representation of IAA device with wqs, populated by probe */
+struct iaa_device {
+	struct list_head		list;
+	struct idxd_device		*idxd;
+
+	struct iaa_device_compression_mode	*compression_modes[IAA_COMP_MODES_MAX];
+
+	int				n_wq;
+	struct list_head		wqs;
+
+	u64				comp_calls;
+	u64				comp_bytes;
+	u64				decomp_calls;
+	u64				decomp_bytes;
+};
+
+struct wq_table_entry {
+	struct idxd_wq **wqs;
+	int	max_wqs;
+	int	n_wqs;
+	int	cur_wq;
+};
+
+#define IAA_AECS_ALIGN			32
+
+/*
+ * Analytics Engine Configuration and State (AECS) contains parameters and
+ * internal state of the analytics engine.
+ */
+struct aecs_comp_table_record {
+	u32 crc;
+	u32 xor_checksum;
+	u32 reserved0[5];
+	u32 num_output_accum_bits;
+	u8 output_accum[256];
+	u32 ll_sym[286];
+	u32 reserved1;
+	u32 reserved2;
+	u32 d_sym[30];
+	u32 reserved_padding[2];
+} __packed;
+
+/* AECS for decompress */
+struct aecs_decomp_table_record {
+	u32 crc;
+	u32 xor_checksum;
+	u32 low_filter_param;
+	u32 high_filter_param;
+	u32 output_mod_idx;
+	u32 drop_init_decomp_out_bytes;
+	u32 reserved[36];
+	u32 output_accum_data[2];
+	u32 out_bits_valid;
+	u32 bit_off_indexing;
+	u32 input_accum_data[64];
+	u8  size_qw[32];
+	u32 decomp_state[1220];
+} __packed;
+
+int iaa_aecs_init_fixed(void);
+void iaa_aecs_cleanup_fixed(void);
+
+typedef int (*iaa_dev_comp_init_fn_t) (struct iaa_device_compression_mode *mode);
+typedef int (*iaa_dev_comp_free_fn_t) (struct iaa_device_compression_mode *mode);
+
+struct iaa_compression_mode {
+	const char		*name;
+	u32			*ll_table;
+	int			ll_table_size;
+	u32			*d_table;
+	int			d_table_size;
+	u32			*header_table;
+	int			header_table_size;
+	u16			gen_decomp_table_flags;
+	iaa_dev_comp_init_fn_t	init;
+	iaa_dev_comp_free_fn_t	free;
+};
+
+int add_iaa_compression_mode(const char *name,
+			     const u32 *ll_table,
+			     int ll_table_size,
+			     const u32 *d_table,
+			     int d_table_size,
+			     const u8 *header_table,
+			     int header_table_size,
+			     u16 gen_decomp_table_flags,
+			     iaa_dev_comp_init_fn_t init,
+			     iaa_dev_comp_free_fn_t free);
+
+void remove_iaa_compression_mode(const char *name);
+
+enum iaa_mode {
+	IAA_MODE_FIXED,
+};
+
+struct iaa_compression_ctx {
+	enum iaa_mode	mode;
+	bool		verify_compress;
+	bool		async_mode;
+	bool		use_irq;
+};
+
+extern struct list_head iaa_devices;
+extern struct mutex iaa_devices_lock;
+
+#endif