module/os/linux/zfs/qat.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 #if defined(_KERNEL) && defined(HAVE_QAT)
  23 #include <sys/zfs_context.h>
  24 #include <sys/qat.h>
  25
  26 qat_stats_t qat_stats = {
  27         { "comp_requests",                      KSTAT_DATA_UINT64 },
  28         { "comp_total_in_bytes",                KSTAT_DATA_UINT64 },
  29         { "comp_total_out_bytes",               KSTAT_DATA_UINT64 },
  30         { "decomp_requests",                    KSTAT_DATA_UINT64 },
  31         { "decomp_total_in_bytes",              KSTAT_DATA_UINT64 },
  32         { "decomp_total_out_bytes",             KSTAT_DATA_UINT64 },
  33         { "dc_fails",                           KSTAT_DATA_UINT64 },
  34         { "encrypt_requests",                   KSTAT_DATA_UINT64 },
  35         { "encrypt_total_in_bytes",             KSTAT_DATA_UINT64 },
  36         { "encrypt_total_out_bytes",            KSTAT_DATA_UINT64 },
  37         { "decrypt_requests",                   KSTAT_DATA_UINT64 },
  38         { "decrypt_total_in_bytes",             KSTAT_DATA_UINT64 },
  39         { "decrypt_total_out_bytes",            KSTAT_DATA_UINT64 },
  40         { "crypt_fails",                        KSTAT_DATA_UINT64 },
  41         { "cksum_requests",                     KSTAT_DATA_UINT64 },
  42         { "cksum_total_in_bytes",               KSTAT_DATA_UINT64 },
  43         { "cksum_fails",                        KSTAT_DATA_UINT64 },
  44 };
  45
  46 static kstat_t *qat_ksp = NULL;
  47
  48 CpaStatus
  49 qat_mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes)
  50 {
  51         *pp_mem_addr = kmalloc(size_bytes, GFP_KERNEL);
  52         if (*pp_mem_addr == NULL)
  53                 return (CPA_STATUS_RESOURCE);
  54         return (CPA_STATUS_SUCCESS);
  55 }
  56
  57 void
  58 qat_mem_free_contig(void **pp_mem_addr)
  59 {
  60         if (*pp_mem_addr != NULL) {
  61                 kfree(*pp_mem_addr);
  62                 *pp_mem_addr = NULL;
  63         }
  64 }
  65
  66 int
  67 qat_init(void)
  68 {
  69         qat_ksp = kstat_create("zfs", 0, "qat", "misc",
  70             KSTAT_TYPE_NAMED, sizeof (qat_stats) / sizeof (kstat_named_t),
  71             KSTAT_FLAG_VIRTUAL);
  72         if (qat_ksp != NULL) {
  73                 qat_ksp->ks_data = &qat_stats;
  74                 kstat_install(qat_ksp);
  75         }
  76
  77         /*
  78          * Just set the disable flag when qat init failed, qat can be
  79          * turned on again in post-process after zfs module is loaded, e.g.:
  80          * echo 0 > /sys/module/zfs/parameters/zfs_qat_compress_disable
  81          */
  82         if (qat_dc_init() != 0)
  83                 zfs_qat_compress_disable = 1;
  84
  85         if (qat_cy_init() != 0) {
  86                 zfs_qat_checksum_disable = 1;
  87                 zfs_qat_encrypt_disable = 1;
  88         }
  89
  90         return (0);
  91 }
  92
  93 void
  94 qat_fini(void)
  95 {
  96         if (qat_ksp != NULL) {
  97                 kstat_delete(qat_ksp);
  98                 qat_ksp = NULL;
  99         }
 100
 101         qat_cy_fini();
 102         qat_dc_fini();
 103 }
 104
 105 #endif