1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <ocf/ocf.h> 35 #include "spdk/bdev.h" 36 #include "data.h" 37 38 struct bdev_ocf_data * 39 vbdev_ocf_data_alloc(uint32_t iovcnt) 40 { 41 struct bdev_ocf_data *data; 42 43 data = env_malloc(sizeof(*data), ENV_MEM_NOIO); 44 if (!data) { 45 return NULL; 46 } 47 48 data->seek = 0; 49 50 if (iovcnt) { 51 data->iovs = env_malloc(sizeof(*data->iovs) * iovcnt, ENV_MEM_NOIO); 52 if (!data->iovs) { 53 env_free(data); 54 return NULL; 55 } 56 } 57 58 data->iovcnt = 0; 59 data->iovalloc = iovcnt; 60 61 return data; 62 } 63 64 void 65 vbdev_ocf_data_free(struct bdev_ocf_data *data) 66 { 67 if (!data) { 68 return; 69 } 70 71 if (data->iovalloc != 0) { 72 env_free(data->iovs); 73 } 74 75 env_free(data); 76 } 77 78 void 79 vbdev_ocf_iovs_add(struct bdev_ocf_data *data, void *base, size_t len) 80 { 81 assert(NULL != data); 82 assert(data->iovalloc != -1); 83 84 if (data->iovcnt == data->iovalloc) { 85 /* TODO: Realloc iovs */ 86 SPDK_ERRLOG("IOV error\n"); 87 } 88 89 data->iovs[data->iovcnt].iov_base = base; 90 data->iovs[data->iovcnt].iov_len = len; 91 data->iovcnt++; 92 } 93 94 struct bdev_ocf_data * 95 vbdev_ocf_data_from_spdk_io(struct spdk_bdev_io *bdev_io) 96 { 97 struct bdev_ocf_data *data; 98 99 if (bdev_io == NULL) { 100 return NULL; 101 } 102 103 switch (bdev_io->type) { 104 case SPDK_BDEV_IO_TYPE_WRITE: 105 case SPDK_BDEV_IO_TYPE_READ: 106 assert(bdev_io->u.bdev.iovs); 107 break; 108 case SPDK_BDEV_IO_TYPE_FLUSH: 109 case SPDK_BDEV_IO_TYPE_UNMAP: 110 break; 111 default: 112 SPDK_ERRLOG("Unsupported IO type %d\n", bdev_io->type); 113 return NULL; 114 } 115 116 data = (struct bdev_ocf_data *)bdev_io->driver_ctx; 117 data->iovs = bdev_io->u.bdev.iovs; 118 data->iovcnt = bdev_io->u.bdev.iovcnt; 119 data->size = bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen; 120 121 return data; 122 } 123