728d001395
Change-Id: I151672e49c442dc1420b5ef6b5a6a47eb78e7464 Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-on: https://review.gerrithub.io/366517 Reviewed-by: Jim Harris <james.r.harris@intel.com> Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
117 lines
3.8 KiB
C
117 lines
3.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define DEV_BUFFER_SIZE (64 * 1024 * 1024)
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#define DEV_BUFFER_BLOCKLEN (4096)
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#define DEV_BUFFER_BLOCKCNT (DEV_BUFFER_SIZE / DEV_BUFFER_BLOCKLEN)
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uint8_t *g_dev_buffer;
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static struct spdk_io_channel *
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dev_create_channel(struct spdk_bs_dev *dev)
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{
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return NULL;
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}
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static void
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dev_destroy_channel(struct spdk_bs_dev *dev, struct spdk_io_channel *channel)
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{
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}
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static void
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dev_destroy(struct spdk_bs_dev *dev)
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{
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}
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static void
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dev_read(struct spdk_bs_dev *dev, struct spdk_io_channel *channel, void *payload,
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uint64_t lba, uint32_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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uint64_t offset, length;
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offset = lba * DEV_BUFFER_BLOCKLEN;
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length = lba_count * DEV_BUFFER_BLOCKLEN;
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SPDK_CU_ASSERT_FATAL(offset + length <= DEV_BUFFER_SIZE);
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memcpy(payload, &g_dev_buffer[offset], length);
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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dev_write(struct spdk_bs_dev *dev, struct spdk_io_channel *channel, void *payload,
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uint64_t lba, uint32_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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uint64_t offset, length;
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offset = lba * DEV_BUFFER_BLOCKLEN;
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length = lba_count * DEV_BUFFER_BLOCKLEN;
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SPDK_CU_ASSERT_FATAL(offset + length <= DEV_BUFFER_SIZE);
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memcpy(&g_dev_buffer[offset], payload, length);
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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dev_flush(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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dev_unmap(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
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uint64_t lba, uint32_t lba_count,
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struct spdk_bs_dev_cb_args *cb_args)
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{
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uint64_t offset, length;
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offset = lba * DEV_BUFFER_BLOCKLEN;
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length = lba_count * DEV_BUFFER_BLOCKLEN;
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SPDK_CU_ASSERT_FATAL(offset + length <= DEV_BUFFER_SIZE);
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memset(&g_dev_buffer[offset], 0, length);
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cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, 0);
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}
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static void
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init_dev(struct spdk_bs_dev *dev)
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{
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dev->create_channel = dev_create_channel;
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dev->destroy_channel = dev_destroy_channel;
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dev->destroy = dev_destroy;
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dev->read = dev_read;
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dev->write = dev_write;
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dev->flush = dev_flush;
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dev->unmap = dev_unmap;
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dev->blockcnt = DEV_BUFFER_BLOCKCNT;
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dev->blocklen = DEV_BUFFER_BLOCKLEN;
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}
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