diff options
Diffstat (limited to 'drivers/crypto/intel/iaa/iaa_crypto.h')
-rw-r--r-- | drivers/crypto/intel/iaa/iaa_crypto.h | 173 |
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 0000000000..014420f7be --- /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 |