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Diffstat (limited to 'include/sys/qat.h')
| -rw-r--r-- | include/sys/qat.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/include/sys/qat.h b/include/sys/qat.h new file mode 100644 index 000000000000..9ae8eb173572 --- /dev/null +++ b/include/sys/qat.h @@ -0,0 +1,199 @@ +/* + * 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" + +/* + * 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 */ |