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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
#ifndef _SYS_QAT_H
#define _SYS_QAT_H
typedef enum qat_compress_dir {
QAT_DECOMPRESS = 0,
QAT_COMPRESS = 1,
} qat_compress_dir_t;
typedef enum qat_encrypt_dir {
QAT_DECRYPT = 0,
QAT_ENCRYPT = 1,
} qat_encrypt_dir_t;
#if defined(_KERNEL) && defined(HAVE_QAT)
#include <sys/zio.h>
#include <sys/crypto/api.h>
#include "cpa.h"
#include "dc/cpa_dc.h"
#include "lac/cpa_cy_sym.h"
/*
* Timeout - no response from hardware after 0.5 seconds
*/
#define QAT_TIMEOUT_MS 500
/*
* The minimal and maximal buffer size which are not restricted
* in the QAT hardware, but with the input buffer size between 4KB
* and 128KB the hardware can provide the optimal performance.
*/
#define QAT_MIN_BUF_SIZE (4*1024)
#define QAT_MAX_BUF_SIZE (128*1024)
/*
* Used for QAT kstat.
*/
typedef struct qat_stats {
/*
* Number of jobs submitted to QAT compression engine.
*/
kstat_named_t comp_requests;
/*
* Total bytes sent to QAT compression engine.
*/
kstat_named_t comp_total_in_bytes;
/*
* Total bytes output from QAT compression engine.
*/
kstat_named_t comp_total_out_bytes;
/*
* Number of jobs submitted to QAT de-compression engine.
*/
kstat_named_t decomp_requests;
/*
* Total bytes sent to QAT de-compression engine.
*/
kstat_named_t decomp_total_in_bytes;
/*
* Total bytes output from QAT de-compression engine.
*/
kstat_named_t decomp_total_out_bytes;
/*
* Number of fails in the QAT compression / decompression engine.
* Note: when a QAT error happens, it doesn't necessarily indicate a
* critical hardware issue. Sometimes it is because the output buffer
* is not big enough. The compression job will be transferred to the
* gzip software implementation so the functionality of ZFS is not
* impacted.
*/
kstat_named_t dc_fails;
/*
* Number of jobs submitted to QAT encryption engine.
*/
kstat_named_t encrypt_requests;
/*
* Total bytes sent to QAT encryption engine.
*/
kstat_named_t encrypt_total_in_bytes;
/*
* Total bytes output from QAT encryption engine.
*/
kstat_named_t encrypt_total_out_bytes;
/*
* Number of jobs submitted to QAT decryption engine.
*/
kstat_named_t decrypt_requests;
/*
* Total bytes sent to QAT decryption engine.
*/
kstat_named_t decrypt_total_in_bytes;
/*
* Total bytes output from QAT decryption engine.
*/
kstat_named_t decrypt_total_out_bytes;
/*
* Number of fails in the QAT encryption / decryption engine.
* Note: when a QAT error happens, it doesn't necessarily indicate a
* critical hardware issue. The encryption job will be transferred
* to the software implementation so the functionality of ZFS is
* not impacted.
*/
kstat_named_t crypt_fails;
/*
* Number of jobs submitted to QAT checksum engine.
*/
kstat_named_t cksum_requests;
/*
* Total bytes sent to QAT checksum engine.
*/
kstat_named_t cksum_total_in_bytes;
/*
* Number of fails in the QAT checksum engine.
* Note: when a QAT error happens, it doesn't necessarily indicate a
* critical hardware issue. The checksum job will be transferred to the
* software implementation so the functionality of ZFS is not impacted.
*/
kstat_named_t cksum_fails;
} qat_stats_t;
#define QAT_STAT_INCR(stat, val) \
atomic_add_64(&qat_stats.stat.value.ui64, (val))
#define QAT_STAT_BUMP(stat) \
QAT_STAT_INCR(stat, 1)
extern qat_stats_t qat_stats;
extern int zfs_qat_compress_disable;
extern int zfs_qat_checksum_disable;
extern int zfs_qat_encrypt_disable;
/* inlined for performance */
static inline struct page *
qat_mem_to_page(void *addr)
{
if (!is_vmalloc_addr(addr))
return (virt_to_page(addr));
return (vmalloc_to_page(addr));
}
CpaStatus qat_mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes);
void qat_mem_free_contig(void **pp_mem_addr);
#define QAT_PHYS_CONTIG_ALLOC(pp_mem_addr, size_bytes) \
qat_mem_alloc_contig((void *)(pp_mem_addr), (size_bytes))
#define QAT_PHYS_CONTIG_FREE(p_mem_addr) \
qat_mem_free_contig((void *)&(p_mem_addr))
extern int qat_dc_init(void);
extern void qat_dc_fini(void);
extern int qat_cy_init(void);
extern void qat_cy_fini(void);
extern int qat_init(void);
extern void qat_fini(void);
/* fake CpaStatus used to indicate data was not compressible */
#define CPA_STATUS_INCOMPRESSIBLE (-127)
extern boolean_t qat_dc_use_accel(size_t s_len);
extern boolean_t qat_crypt_use_accel(size_t s_len);
extern boolean_t qat_checksum_use_accel(size_t s_len);
extern int qat_compress(qat_compress_dir_t dir, char *src, int src_len,
char *dst, int dst_len, size_t *c_len);
extern int qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
uint8_t *aad_buf, uint32_t aad_len, uint8_t *iv_buf, uint8_t *digest_buf,
crypto_key_t *key, uint64_t crypt, uint32_t enc_len);
extern int qat_checksum(uint64_t cksum, uint8_t *buf, uint64_t size,
zio_cksum_t *zcp);
#else
#define CPA_STATUS_SUCCESS 0
#define CPA_STATUS_INCOMPRESSIBLE (-127)
#define qat_init()
#define qat_fini()
#define qat_dc_use_accel(s_len) 0
#define qat_crypt_use_accel(s_len) 0
#define qat_checksum_use_accel(s_len) 0
#define qat_compress(dir, s, sl, d, dl, cl) 0
#define qat_crypt(dir, s, d, a, al, i, db, k, c, el) 0
#define qat_checksum(c, buf, s, z) 0
#endif
#endif /* _SYS_QAT_H */
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