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-rw-r--r--src/spdk/lib/copy/Makefile42
-rw-r--r--src/spdk/lib/copy/copy_engine.c318
-rw-r--r--src/spdk/lib/copy/ioat/Makefile40
-rw-r--r--src/spdk/lib/copy/ioat/copy_engine_ioat.c421
-rw-r--r--src/spdk/lib/copy/ioat/copy_engine_ioat.h44
-rw-r--r--src/spdk/lib/copy/ioat/copy_engine_ioat_rpc.c118
6 files changed, 983 insertions, 0 deletions
diff --git a/src/spdk/lib/copy/Makefile b/src/spdk/lib/copy/Makefile
new file mode 100644
index 00000000..31f983b5
--- /dev/null
+++ b/src/spdk/lib/copy/Makefile
@@ -0,0 +1,42 @@
+#
+# BSD LICENSE
+#
+# Copyright (c) Intel Corporation.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+SPDK_ROOT_DIR := $(abspath $(CURDIR)/../..)
+include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
+
+LIBNAME = copy
+C_SRCS = copy_engine.c
+
+DIRS-y = ioat
+
+include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk
diff --git a/src/spdk/lib/copy/copy_engine.c b/src/spdk/lib/copy/copy_engine.c
new file mode 100644
index 00000000..921e17fa
--- /dev/null
+++ b/src/spdk/lib/copy/copy_engine.c
@@ -0,0 +1,318 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) Intel Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "spdk/stdinc.h"
+
+#include "spdk_internal/copy_engine.h"
+
+#include "spdk/env.h"
+#include "spdk/event.h"
+#include "spdk/log.h"
+#include "spdk/thread.h"
+
+static size_t g_max_copy_module_size = 0;
+
+static struct spdk_copy_engine *hw_copy_engine = NULL;
+/* Memcpy engine always exist */
+static struct spdk_copy_engine *mem_copy_engine = NULL;
+
+TAILQ_HEAD(, spdk_copy_module_if) spdk_copy_module_list =
+ TAILQ_HEAD_INITIALIZER(spdk_copy_module_list);
+
+struct copy_io_channel {
+ struct spdk_copy_engine *engine;
+ struct spdk_io_channel *ch;
+};
+
+struct spdk_copy_module_if *g_copy_engine_module = NULL;
+spdk_copy_fini_cb g_fini_cb_fn = NULL;
+void *g_fini_cb_arg = NULL;
+
+void
+spdk_copy_engine_register(struct spdk_copy_engine *copy_engine)
+{
+ assert(hw_copy_engine == NULL);
+ hw_copy_engine = copy_engine;
+}
+
+static void
+spdk_memcpy_register(struct spdk_copy_engine *copy_engine)
+{
+ assert(mem_copy_engine == NULL);
+ mem_copy_engine = copy_engine;
+}
+
+static void
+spdk_memcpy_unregister(void)
+{
+ mem_copy_engine = NULL;
+}
+
+static void
+copy_engine_done(void *ref, int status)
+{
+ struct spdk_copy_task *req = (struct spdk_copy_task *)ref;
+
+ req->cb(req, status);
+}
+
+int
+spdk_copy_submit(struct spdk_copy_task *copy_req, struct spdk_io_channel *ch,
+ void *dst, void *src, uint64_t nbytes, spdk_copy_completion_cb cb)
+{
+ struct spdk_copy_task *req = copy_req;
+ struct copy_io_channel *copy_ch = spdk_io_channel_get_ctx(ch);
+
+ req->cb = cb;
+ return copy_ch->engine->copy(req->offload_ctx, copy_ch->ch, dst, src, nbytes,
+ copy_engine_done);
+}
+
+int
+spdk_copy_submit_fill(struct spdk_copy_task *copy_req, struct spdk_io_channel *ch,
+ void *dst, uint8_t fill, uint64_t nbytes, spdk_copy_completion_cb cb)
+{
+ struct spdk_copy_task *req = copy_req;
+ struct copy_io_channel *copy_ch = spdk_io_channel_get_ctx(ch);
+
+ req->cb = cb;
+ return copy_ch->engine->fill(req->offload_ctx, copy_ch->ch, dst, fill, nbytes,
+ copy_engine_done);
+}
+
+/* memcpy default copy engine */
+static int
+mem_copy_submit(void *cb_arg, struct spdk_io_channel *ch, void *dst, void *src, uint64_t nbytes,
+ spdk_copy_completion_cb cb)
+{
+ struct spdk_copy_task *copy_req;
+
+ memcpy(dst, src, (size_t)nbytes);
+
+ copy_req = (struct spdk_copy_task *)((uintptr_t)cb_arg -
+ offsetof(struct spdk_copy_task, offload_ctx));
+ cb(copy_req, 0);
+ return 0;
+}
+
+static int
+mem_copy_fill(void *cb_arg, struct spdk_io_channel *ch, void *dst, uint8_t fill, uint64_t nbytes,
+ spdk_copy_completion_cb cb)
+{
+ struct spdk_copy_task *copy_req;
+
+ memset(dst, fill, nbytes);
+ copy_req = (struct spdk_copy_task *)((uintptr_t)cb_arg -
+ offsetof(struct spdk_copy_task, offload_ctx));
+ cb(copy_req, 0);
+
+ return 0;
+}
+
+static struct spdk_io_channel *mem_get_io_channel(void);
+
+static struct spdk_copy_engine memcpy_copy_engine = {
+ .copy = mem_copy_submit,
+ .fill = mem_copy_fill,
+ .get_io_channel = mem_get_io_channel,
+};
+
+static int
+memcpy_create_cb(void *io_device, void *ctx_buf)
+{
+ return 0;
+}
+
+static void
+memcpy_destroy_cb(void *io_device, void *ctx_buf)
+{
+}
+
+static struct spdk_io_channel *mem_get_io_channel(void)
+{
+ return spdk_get_io_channel(&memcpy_copy_engine);
+}
+
+static size_t
+copy_engine_mem_get_ctx_size(void)
+{
+ return sizeof(struct spdk_copy_task);
+}
+
+size_t
+spdk_copy_task_size(void)
+{
+ return g_max_copy_module_size;
+}
+
+void spdk_copy_module_list_add(struct spdk_copy_module_if *copy_module)
+{
+ TAILQ_INSERT_TAIL(&spdk_copy_module_list, copy_module, tailq);
+ if (copy_module->get_ctx_size && copy_module->get_ctx_size() > g_max_copy_module_size) {
+ g_max_copy_module_size = copy_module->get_ctx_size();
+ }
+}
+
+static int
+copy_create_cb(void *io_device, void *ctx_buf)
+{
+ struct copy_io_channel *copy_ch = ctx_buf;
+
+ if (hw_copy_engine != NULL) {
+ copy_ch->ch = hw_copy_engine->get_io_channel();
+ if (copy_ch->ch != NULL) {
+ copy_ch->engine = hw_copy_engine;
+ return 0;
+ }
+ }
+
+ copy_ch->ch = mem_copy_engine->get_io_channel();
+ assert(copy_ch->ch != NULL);
+ copy_ch->engine = mem_copy_engine;
+ return 0;
+}
+
+static void
+copy_destroy_cb(void *io_device, void *ctx_buf)
+{
+ struct copy_io_channel *copy_ch = ctx_buf;
+
+ spdk_put_io_channel(copy_ch->ch);
+}
+
+struct spdk_io_channel *
+spdk_copy_engine_get_io_channel(void)
+{
+ return spdk_get_io_channel(&spdk_copy_module_list);
+}
+
+static int
+copy_engine_mem_init(void)
+{
+ spdk_memcpy_register(&memcpy_copy_engine);
+ spdk_io_device_register(&memcpy_copy_engine, memcpy_create_cb, memcpy_destroy_cb, 0,
+ "memcpy_engine");
+
+ return 0;
+}
+
+static void
+copy_engine_mem_fini(void *ctxt)
+{
+ spdk_io_device_unregister(&memcpy_copy_engine, NULL);
+ spdk_memcpy_unregister();
+
+ spdk_copy_engine_module_finish();
+}
+
+static void
+spdk_copy_engine_module_initialize(void)
+{
+ struct spdk_copy_module_if *copy_engine_module;
+
+ TAILQ_FOREACH(copy_engine_module, &spdk_copy_module_list, tailq) {
+ copy_engine_module->module_init();
+ }
+}
+
+int
+spdk_copy_engine_initialize(void)
+{
+ spdk_copy_engine_module_initialize();
+ /*
+ * We need a unique identifier for the copy engine framework, so use the
+ * spdk_copy_module_list address for this purpose.
+ */
+ spdk_io_device_register(&spdk_copy_module_list, copy_create_cb, copy_destroy_cb,
+ sizeof(struct copy_io_channel), "copy_module");
+
+ return 0;
+}
+
+static void
+spdk_copy_engine_module_finish_cb(void)
+{
+ spdk_copy_fini_cb cb_fn = g_fini_cb_fn;
+
+ cb_fn(g_fini_cb_arg);
+ g_fini_cb_fn = NULL;
+ g_fini_cb_arg = NULL;
+}
+
+void
+spdk_copy_engine_module_finish(void)
+{
+ if (!g_copy_engine_module) {
+ g_copy_engine_module = TAILQ_FIRST(&spdk_copy_module_list);
+ } else {
+ g_copy_engine_module = TAILQ_NEXT(g_copy_engine_module, tailq);
+ }
+
+ if (!g_copy_engine_module) {
+ spdk_copy_engine_module_finish_cb();
+ return;
+ }
+
+ if (g_copy_engine_module->module_fini) {
+ spdk_thread_send_msg(spdk_get_thread(), g_copy_engine_module->module_fini, NULL);
+ } else {
+ spdk_copy_engine_module_finish();
+ }
+}
+
+void
+spdk_copy_engine_finish(spdk_copy_fini_cb cb_fn, void *cb_arg)
+{
+ assert(cb_fn != NULL);
+
+ g_fini_cb_fn = cb_fn;
+ g_fini_cb_arg = cb_arg;
+
+ spdk_io_device_unregister(&spdk_copy_module_list, NULL);
+ spdk_copy_engine_module_finish();
+}
+
+void
+spdk_copy_engine_config_text(FILE *fp)
+{
+ struct spdk_copy_module_if *copy_engine_module;
+
+ TAILQ_FOREACH(copy_engine_module, &spdk_copy_module_list, tailq) {
+ if (copy_engine_module->config_text) {
+ copy_engine_module->config_text(fp);
+ }
+ }
+}
+
+SPDK_COPY_MODULE_REGISTER(copy_engine_mem_init, copy_engine_mem_fini,
+ NULL, copy_engine_mem_get_ctx_size)
diff --git a/src/spdk/lib/copy/ioat/Makefile b/src/spdk/lib/copy/ioat/Makefile
new file mode 100644
index 00000000..3d19e38f
--- /dev/null
+++ b/src/spdk/lib/copy/ioat/Makefile
@@ -0,0 +1,40 @@
+#
+# BSD LICENSE
+#
+# Copyright (c) Intel Corporation.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../..)
+include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
+
+LIBNAME = copy_ioat
+C_SRCS = copy_engine_ioat.c copy_engine_ioat_rpc.c
+
+include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk
diff --git a/src/spdk/lib/copy/ioat/copy_engine_ioat.c b/src/spdk/lib/copy/ioat/copy_engine_ioat.c
new file mode 100644
index 00000000..40bc6cf5
--- /dev/null
+++ b/src/spdk/lib/copy/ioat/copy_engine_ioat.c
@@ -0,0 +1,421 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) Intel Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "copy_engine_ioat.h"
+
+#include "spdk/stdinc.h"
+
+#include "spdk_internal/copy_engine.h"
+#include "spdk_internal/log.h"
+
+#include "spdk/env.h"
+#include "spdk/conf.h"
+#include "spdk/event.h"
+#include "spdk/thread.h"
+#include "spdk/ioat.h"
+
+static bool g_ioat_enable = false;
+
+struct ioat_probe_ctx {
+ int num_whitelist_devices;
+ struct spdk_pci_addr whitelist[IOAT_MAX_CHANNELS];
+};
+
+static struct ioat_probe_ctx g_probe_ctx;
+
+struct ioat_device {
+ struct spdk_ioat_chan *ioat;
+ bool is_allocated;
+ /** linked list pointer for device list */
+ TAILQ_ENTRY(ioat_device) tailq;
+};
+
+static TAILQ_HEAD(, ioat_device) g_devices = TAILQ_HEAD_INITIALIZER(g_devices);
+static pthread_mutex_t g_ioat_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+struct ioat_io_channel {
+ struct spdk_ioat_chan *ioat_ch;
+ struct ioat_device *ioat_dev;
+ struct spdk_poller *poller;
+};
+
+static int
+ioat_find_dev_by_whitelist_bdf(const struct spdk_pci_addr *pci_addr,
+ const struct spdk_pci_addr *whitelist,
+ int num_whitelist_devices)
+{
+ int i;
+
+ for (i = 0; i < num_whitelist_devices; i++) {
+ if (spdk_pci_addr_compare(pci_addr, &whitelist[i]) == 0) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static struct ioat_device *
+ioat_allocate_device(void)
+{
+ struct ioat_device *dev;
+
+ pthread_mutex_lock(&g_ioat_mutex);
+ TAILQ_FOREACH(dev, &g_devices, tailq) {
+ if (!dev->is_allocated) {
+ dev->is_allocated = true;
+ pthread_mutex_unlock(&g_ioat_mutex);
+ return dev;
+ }
+ }
+ pthread_mutex_unlock(&g_ioat_mutex);
+
+ return NULL;
+}
+
+static void
+ioat_free_device(struct ioat_device *dev)
+{
+ pthread_mutex_lock(&g_ioat_mutex);
+ dev->is_allocated = false;
+ pthread_mutex_unlock(&g_ioat_mutex);
+}
+
+struct ioat_task {
+ spdk_copy_completion_cb cb;
+};
+
+static int copy_engine_ioat_init(void);
+static void copy_engine_ioat_exit(void *ctx);
+static void copy_engine_ioat_config_text(FILE *fp);
+
+static size_t
+copy_engine_ioat_get_ctx_size(void)
+{
+ return sizeof(struct ioat_task) + sizeof(struct spdk_copy_task);
+}
+
+SPDK_COPY_MODULE_REGISTER(copy_engine_ioat_init, copy_engine_ioat_exit,
+ copy_engine_ioat_config_text,
+ copy_engine_ioat_get_ctx_size)
+
+static void
+copy_engine_ioat_exit(void *ctx)
+{
+ struct ioat_device *dev;
+
+ while (!TAILQ_EMPTY(&g_devices)) {
+ dev = TAILQ_FIRST(&g_devices);
+ TAILQ_REMOVE(&g_devices, dev, tailq);
+ spdk_ioat_detach(dev->ioat);
+ ioat_free_device(dev);
+ spdk_dma_free(dev);
+ }
+ spdk_copy_engine_module_finish();
+}
+
+static void
+ioat_done(void *cb_arg)
+{
+ struct spdk_copy_task *copy_req;
+ struct ioat_task *ioat_task = cb_arg;
+
+ copy_req = (struct spdk_copy_task *)
+ ((uintptr_t)ioat_task -
+ offsetof(struct spdk_copy_task, offload_ctx));
+
+ ioat_task->cb(copy_req, 0);
+}
+
+static int
+ioat_copy_submit(void *cb_arg, struct spdk_io_channel *ch, void *dst, void *src, uint64_t nbytes,
+ spdk_copy_completion_cb cb)
+{
+ struct ioat_task *ioat_task = (struct ioat_task *)cb_arg;
+ struct ioat_io_channel *ioat_ch = spdk_io_channel_get_ctx(ch);
+
+ assert(ioat_ch->ioat_ch != NULL);
+
+ ioat_task->cb = cb;
+
+ return spdk_ioat_submit_copy(ioat_ch->ioat_ch, ioat_task, ioat_done, dst, src, nbytes);
+}
+
+static int
+ioat_copy_submit_fill(void *cb_arg, struct spdk_io_channel *ch, void *dst, uint8_t fill,
+ uint64_t nbytes, spdk_copy_completion_cb cb)
+{
+ struct ioat_task *ioat_task = (struct ioat_task *)cb_arg;
+ struct ioat_io_channel *ioat_ch = spdk_io_channel_get_ctx(ch);
+ uint64_t fill64 = 0x0101010101010101ULL * fill;
+
+ assert(ioat_ch->ioat_ch != NULL);
+
+ ioat_task->cb = cb;
+
+ return spdk_ioat_submit_fill(ioat_ch->ioat_ch, ioat_task, ioat_done, dst, fill64, nbytes);
+}
+
+static int
+ioat_poll(void *arg)
+{
+ struct spdk_ioat_chan *chan = arg;
+
+ spdk_ioat_process_events(chan);
+
+ return -1;
+}
+
+static struct spdk_io_channel *ioat_get_io_channel(void);
+
+static struct spdk_copy_engine ioat_copy_engine = {
+ .copy = ioat_copy_submit,
+ .fill = ioat_copy_submit_fill,
+ .get_io_channel = ioat_get_io_channel,
+};
+
+static int
+ioat_create_cb(void *io_device, void *ctx_buf)
+{
+ struct ioat_io_channel *ch = ctx_buf;
+ struct ioat_device *ioat_dev;
+
+ ioat_dev = ioat_allocate_device();
+ if (ioat_dev == NULL) {
+ return -1;
+ }
+
+ ch->ioat_dev = ioat_dev;
+ ch->ioat_ch = ioat_dev->ioat;
+ ch->poller = spdk_poller_register(ioat_poll, ch->ioat_ch, 0);
+ return 0;
+}
+
+static void
+ioat_destroy_cb(void *io_device, void *ctx_buf)
+{
+ struct ioat_io_channel *ch = ctx_buf;
+
+ ioat_free_device(ch->ioat_dev);
+ spdk_poller_unregister(&ch->poller);
+}
+
+static struct spdk_io_channel *
+ioat_get_io_channel(void)
+{
+ return spdk_get_io_channel(&ioat_copy_engine);
+}
+
+static bool
+probe_cb(void *cb_ctx, struct spdk_pci_device *pci_dev)
+{
+ struct ioat_probe_ctx *ctx = cb_ctx;
+ struct spdk_pci_addr pci_addr = spdk_pci_device_get_addr(pci_dev);
+
+ SPDK_INFOLOG(SPDK_LOG_COPY_IOAT,
+ " Found matching device at %04x:%02x:%02x.%x vendor:0x%04x device:0x%04x\n",
+ pci_addr.domain,
+ pci_addr.bus,
+ pci_addr.dev,
+ pci_addr.func,
+ spdk_pci_device_get_vendor_id(pci_dev),
+ spdk_pci_device_get_device_id(pci_dev));
+
+ if (ctx->num_whitelist_devices > 0 &&
+ !ioat_find_dev_by_whitelist_bdf(&pci_addr, ctx->whitelist, ctx->num_whitelist_devices)) {
+ return false;
+ }
+
+ /* Claim the device in case conflict with other process */
+ if (spdk_pci_device_claim(&pci_addr) < 0) {
+ return false;
+ }
+
+ return true;
+}
+
+static void
+attach_cb(void *cb_ctx, struct spdk_pci_device *pci_dev, struct spdk_ioat_chan *ioat)
+{
+ struct ioat_device *dev;
+
+ dev = spdk_dma_zmalloc(sizeof(*dev), 0, NULL);
+ if (dev == NULL) {
+ SPDK_ERRLOG("Failed to allocate device struct\n");
+ return;
+ }
+
+ dev->ioat = ioat;
+ TAILQ_INSERT_TAIL(&g_devices, dev, tailq);
+}
+
+void
+copy_engine_ioat_enable_probe(void)
+{
+ g_ioat_enable = true;
+}
+
+static int
+copy_engine_ioat_add_whitelist_device(const char *pci_bdf)
+{
+ if (pci_bdf == NULL) {
+ return -1;
+ }
+
+ if (g_probe_ctx.num_whitelist_devices >= IOAT_MAX_CHANNELS) {
+ SPDK_ERRLOG("Ioat whitelist is full (max size is %d)\n",
+ IOAT_MAX_CHANNELS);
+ return -1;
+ }
+
+ if (spdk_pci_addr_parse(&g_probe_ctx.whitelist[g_probe_ctx.num_whitelist_devices],
+ pci_bdf) < 0) {
+ SPDK_ERRLOG("Invalid address %s\n", pci_bdf);
+ return -1;
+ }
+
+ g_probe_ctx.num_whitelist_devices++;
+
+ return 0;
+}
+
+int
+copy_engine_ioat_add_whitelist_devices(const char *pci_bdfs[], size_t num_pci_bdfs)
+{
+ size_t i;
+
+ for (i = 0; i < num_pci_bdfs; i++) {
+ if (copy_engine_ioat_add_whitelist_device(pci_bdfs[i]) < 0) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int
+copy_engine_ioat_read_config_file_params(struct spdk_conf_section *sp)
+{
+ int i;
+ char *val, *pci_bdf;
+
+ if (spdk_conf_section_get_boolval(sp, "Enable", false)) {
+ g_ioat_enable = true;
+ /* Enable Ioat */
+ }
+
+ val = spdk_conf_section_get_val(sp, "Disable");
+ if (val != NULL) {
+ SPDK_WARNLOG("\"Disable\" option is deprecated and will be removed in a future release.\n");
+ SPDK_WARNLOG("IOAT is now disabled by default. It may be enabled by \"Enable Yes\"\n");
+
+ if (g_ioat_enable && (strcasecmp(val, "Yes") == 0)) {
+ SPDK_ERRLOG("\"Enable Yes\" and \"Disable Yes\" cannot be set at the same time\n");
+ return -1;
+ }
+ }
+
+ /* Init the whitelist */
+ for (i = 0; ; i++) {
+ pci_bdf = spdk_conf_section_get_nmval(sp, "Whitelist", i, 0);
+ if (!pci_bdf) {
+ break;
+ }
+
+ if (copy_engine_ioat_add_whitelist_device(pci_bdf) < 0) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int
+copy_engine_ioat_init(void)
+{
+ struct spdk_conf_section *sp;
+ int rc;
+
+ sp = spdk_conf_find_section(NULL, "Ioat");
+ if (sp != NULL) {
+ rc = copy_engine_ioat_read_config_file_params(sp);
+ if (rc != 0) {
+ SPDK_ERRLOG("copy_engine_ioat_read_config_file_params() failed\n");
+ return rc;
+ }
+ }
+
+ if (!g_ioat_enable) {
+ return 0;
+ }
+
+ if (spdk_ioat_probe(&g_probe_ctx, probe_cb, attach_cb) != 0) {
+ SPDK_ERRLOG("spdk_ioat_probe() failed\n");
+ return -1;
+ }
+
+ SPDK_INFOLOG(SPDK_LOG_COPY_IOAT, "Ioat Copy Engine Offload Enabled\n");
+ spdk_copy_engine_register(&ioat_copy_engine);
+ spdk_io_device_register(&ioat_copy_engine, ioat_create_cb, ioat_destroy_cb,
+ sizeof(struct ioat_io_channel), "ioat_copy_engine");
+ return 0;
+}
+
+#define COPY_ENGINE_IOAT_HEADER_TMPL \
+"[Ioat]\n" \
+" # Users may not want to use offload even it is available.\n" \
+" # Users may use the whitelist to initialize specified devices, IDS\n" \
+" # uses BUS:DEVICE.FUNCTION to identify each Ioat channel.\n"
+
+#define COPY_ENGINE_IOAT_ENABLE_TMPL \
+" Enable %s\n"
+
+#define COPY_ENGINE_IOAT_WHITELIST_TMPL \
+" Whitelist %.4" PRIx16 ":%.2" PRIx8 ":%.2" PRIx8 ".%" PRIx8 "\n"
+
+static void
+copy_engine_ioat_config_text(FILE *fp)
+{
+ int i;
+ struct spdk_pci_addr *dev;
+
+ fprintf(fp, COPY_ENGINE_IOAT_HEADER_TMPL);
+ fprintf(fp, COPY_ENGINE_IOAT_ENABLE_TMPL, g_ioat_enable ? "Yes" : "No");
+
+ for (i = 0; i < g_probe_ctx.num_whitelist_devices; i++) {
+ dev = &g_probe_ctx.whitelist[i];
+ fprintf(fp, COPY_ENGINE_IOAT_WHITELIST_TMPL,
+ dev->domain, dev->bus, dev->dev, dev->func);
+ }
+}
+
+SPDK_LOG_REGISTER_COMPONENT("copy_ioat", SPDK_LOG_COPY_IOAT)
diff --git a/src/spdk/lib/copy/ioat/copy_engine_ioat.h b/src/spdk/lib/copy/ioat/copy_engine_ioat.h
new file mode 100644
index 00000000..ae69fb2d
--- /dev/null
+++ b/src/spdk/lib/copy/ioat/copy_engine_ioat.h
@@ -0,0 +1,44 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) Intel Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SPDK_COPY_ENGINE_IOAT_H
+#define SPDK_COPY_ENGINE_IOAT_H
+
+#include "spdk/stdinc.h"
+
+#define IOAT_MAX_CHANNELS 64
+
+int copy_engine_ioat_add_whitelist_devices(const char *pci_bdfs[], size_t num_pci_bdfs);
+void copy_engine_ioat_enable_probe(void);
+
+#endif /* SPDK_COPY_ENGINE_IOAT_H */
diff --git a/src/spdk/lib/copy/ioat/copy_engine_ioat_rpc.c b/src/spdk/lib/copy/ioat/copy_engine_ioat_rpc.c
new file mode 100644
index 00000000..ae03fdb1
--- /dev/null
+++ b/src/spdk/lib/copy/ioat/copy_engine_ioat_rpc.c
@@ -0,0 +1,118 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) Intel Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "copy_engine_ioat.h"
+
+#include "spdk/rpc.h"
+#include "spdk/util.h"
+#include "spdk/event.h"
+
+struct rpc_pci_whitelist {
+ size_t num_bdfs;
+ char *bdfs[IOAT_MAX_CHANNELS];
+};
+
+static int
+decode_rpc_pci_whitelist(const struct spdk_json_val *val, void *out)
+{
+ struct rpc_pci_whitelist *pci_whitelist = out;
+
+ return spdk_json_decode_array(val, spdk_json_decode_string, pci_whitelist->bdfs,
+ IOAT_MAX_CHANNELS, &pci_whitelist->num_bdfs, sizeof(char *));
+}
+
+static void
+free_rpc_pci_whitelist(struct rpc_pci_whitelist *list)
+{
+ size_t i;
+
+ for (i = 0; i < list->num_bdfs; i++) {
+ free(list->bdfs[i]);
+ }
+}
+
+struct rpc_copy_engine_ioat {
+ struct rpc_pci_whitelist pci_whitelist;
+};
+
+static void
+free_rpc_copy_engine_ioat(struct rpc_copy_engine_ioat *p)
+{
+ free_rpc_pci_whitelist(&p->pci_whitelist);
+}
+
+static const struct spdk_json_object_decoder rpc_copy_engine_ioat_decoder[] = {
+ {"pci_whitelist", offsetof(struct rpc_copy_engine_ioat, pci_whitelist), decode_rpc_pci_whitelist},
+};
+
+static void
+spdk_rpc_scan_copy_engine_ioat(struct spdk_jsonrpc_request *request,
+ const struct spdk_json_val *params)
+{
+ struct rpc_copy_engine_ioat req = {};
+ struct spdk_json_write_ctx *w;
+ int rc;
+
+ if (params != NULL) {
+ if (spdk_json_decode_object(params, rpc_copy_engine_ioat_decoder,
+ SPDK_COUNTOF(rpc_copy_engine_ioat_decoder),
+ &req)) {
+ free_rpc_copy_engine_ioat(&req);
+ SPDK_ERRLOG("spdk_json_decode_object() failed\n");
+ spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+ "Invalid parameters");
+ return;
+ }
+
+ rc = copy_engine_ioat_add_whitelist_devices((const char **)req.pci_whitelist.bdfs,
+ req.pci_whitelist.num_bdfs);
+ free_rpc_copy_engine_ioat(&req);
+ if (rc < 0) {
+ SPDK_ERRLOG("copy_engine_ioat_add_whitelist_devices() failed\n");
+ spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+ "Invalid parameters");
+ return;
+ }
+ }
+
+ copy_engine_ioat_enable_probe();
+
+ w = spdk_jsonrpc_begin_result(request);
+ if (w == NULL) {
+ return;
+ }
+
+ spdk_json_write_bool(w, true);
+ spdk_jsonrpc_end_result(request, w);
+}
+SPDK_RPC_REGISTER("scan_ioat_copy_engine", spdk_rpc_scan_copy_engine_ioat, SPDK_RPC_STARTUP)