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-rw-r--r--src/spdk/lib/env_dpdk/memory.c712
1 files changed, 712 insertions, 0 deletions
diff --git a/src/spdk/lib/env_dpdk/memory.c b/src/spdk/lib/env_dpdk/memory.c
new file mode 100644
index 00000000..eaeccb90
--- /dev/null
+++ b/src/spdk/lib/env_dpdk/memory.c
@@ -0,0 +1,712 @@
+/*-
+ * 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 "env_internal.h"
+
+#include <rte_config.h>
+#include <rte_eal_memconfig.h>
+
+#include "spdk_internal/assert.h"
+
+#include "spdk/assert.h"
+#include "spdk/likely.h"
+#include "spdk/queue.h"
+#include "spdk/util.h"
+
+#if DEBUG
+#define DEBUG_PRINT(...) fprintf(stderr, __VA_ARGS__)
+#else
+#define DEBUG_PRINT(...)
+#endif
+
+#define FN_2MB_TO_4KB(fn) (fn << (SHIFT_2MB - SHIFT_4KB))
+#define FN_4KB_TO_2MB(fn) (fn >> (SHIFT_2MB - SHIFT_4KB))
+
+#define MAP_256TB_IDX(vfn_2mb) ((vfn_2mb) >> (SHIFT_1GB - SHIFT_2MB))
+#define MAP_1GB_IDX(vfn_2mb) ((vfn_2mb) & ((1ULL << (SHIFT_1GB - SHIFT_2MB)) - 1))
+
+/* Page is registered */
+#define REG_MAP_REGISTERED (1ULL << 62)
+
+/* A notification region barrier. The 2MB translation entry that's marked
+ * with this flag must be unregistered separately. This allows contiguous
+ * regions to be unregistered in the same chunks they were registered.
+ */
+#define REG_MAP_NOTIFY_START (1ULL << 63)
+
+/* Translation of a single 2MB page. */
+struct map_2mb {
+ uint64_t translation_2mb;
+};
+
+/* Second-level map table indexed by bits [21..29] of the virtual address.
+ * Each entry contains the address translation or error for entries that haven't
+ * been retrieved yet.
+ */
+struct map_1gb {
+ struct map_2mb map[1ULL << (SHIFT_1GB - SHIFT_2MB)];
+};
+
+/* Top-level map table indexed by bits [30..47] of the virtual address.
+ * Each entry points to a second-level map table or NULL.
+ */
+struct map_256tb {
+ struct map_1gb *map[1ULL << (SHIFT_256TB - SHIFT_1GB)];
+};
+
+/* Page-granularity memory address translation */
+struct spdk_mem_map {
+ struct map_256tb map_256tb;
+ pthread_mutex_t mutex;
+ uint64_t default_translation;
+ struct spdk_mem_map_ops ops;
+ void *cb_ctx;
+ TAILQ_ENTRY(spdk_mem_map) tailq;
+};
+
+/* Registrations map. The 64 bit translations are bit fields with the
+ * following layout (starting with the low bits):
+ * 0 - 61 : reserved
+ * 62 - 63 : flags
+ */
+static struct spdk_mem_map *g_mem_reg_map;
+static TAILQ_HEAD(, spdk_mem_map) g_spdk_mem_maps = TAILQ_HEAD_INITIALIZER(g_spdk_mem_maps);
+static pthread_mutex_t g_spdk_mem_map_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+/*
+ * Walk the currently registered memory via the main memory registration map
+ * and call the new map's notify callback for each virtually contiguous region.
+ */
+static int
+spdk_mem_map_notify_walk(struct spdk_mem_map *map, enum spdk_mem_map_notify_action action)
+{
+ size_t idx_256tb;
+ uint64_t idx_1gb;
+ uint64_t contig_start = UINT64_MAX;
+ uint64_t contig_end = UINT64_MAX;
+ struct map_1gb *map_1gb;
+ int rc;
+
+ if (!g_mem_reg_map) {
+ return -EINVAL;
+ }
+
+ /* Hold the memory registration map mutex so no new registrations can be added while we are looping. */
+ pthread_mutex_lock(&g_mem_reg_map->mutex);
+
+ for (idx_256tb = 0;
+ idx_256tb < sizeof(g_mem_reg_map->map_256tb.map) / sizeof(g_mem_reg_map->map_256tb.map[0]);
+ idx_256tb++) {
+ map_1gb = g_mem_reg_map->map_256tb.map[idx_256tb];
+
+ if (!map_1gb) {
+ if (contig_start != UINT64_MAX) {
+ /* End of of a virtually contiguous range */
+ rc = map->ops.notify_cb(map->cb_ctx, map, action,
+ (void *)contig_start,
+ contig_end - contig_start + VALUE_2MB);
+ /* Don't bother handling unregister failures. It can't be any worse */
+ if (rc != 0 && action == SPDK_MEM_MAP_NOTIFY_REGISTER) {
+ goto err_unregister;
+ }
+ }
+ contig_start = UINT64_MAX;
+ continue;
+ }
+
+ for (idx_1gb = 0; idx_1gb < sizeof(map_1gb->map) / sizeof(map_1gb->map[0]); idx_1gb++) {
+ if ((map_1gb->map[idx_1gb].translation_2mb & REG_MAP_REGISTERED) &&
+ (contig_start == UINT64_MAX ||
+ (map_1gb->map[idx_1gb].translation_2mb & REG_MAP_NOTIFY_START) == 0)) {
+ /* Rebuild the virtual address from the indexes */
+ uint64_t vaddr = (idx_256tb << SHIFT_1GB) | (idx_1gb << SHIFT_2MB);
+
+ if (contig_start == UINT64_MAX) {
+ contig_start = vaddr;
+ }
+
+ contig_end = vaddr;
+ } else {
+ if (contig_start != UINT64_MAX) {
+ /* End of of a virtually contiguous range */
+ rc = map->ops.notify_cb(map->cb_ctx, map, action,
+ (void *)contig_start,
+ contig_end - contig_start + VALUE_2MB);
+ /* Don't bother handling unregister failures. It can't be any worse */
+ if (rc != 0 && action == SPDK_MEM_MAP_NOTIFY_REGISTER) {
+ goto err_unregister;
+ }
+
+ /* This page might be a part of a neighbour region, so process
+ * it again. The idx_1gb will be incremented immediately.
+ */
+ idx_1gb--;
+ }
+ contig_start = UINT64_MAX;
+ }
+ }
+ }
+
+ pthread_mutex_unlock(&g_mem_reg_map->mutex);
+ return 0;
+
+err_unregister:
+ /* Unwind to the first empty translation so we don't unregister
+ * a region that just failed to register.
+ */
+ idx_256tb = MAP_256TB_IDX((contig_start >> SHIFT_2MB) - 1);
+ idx_1gb = MAP_1GB_IDX((contig_start >> SHIFT_2MB) - 1);
+ contig_start = UINT64_MAX;
+ contig_end = UINT64_MAX;
+
+ /* Unregister any memory we managed to register before the failure */
+ for (; idx_256tb < SIZE_MAX; idx_256tb--) {
+ map_1gb = g_mem_reg_map->map_256tb.map[idx_256tb];
+
+ if (!map_1gb) {
+ if (contig_end != UINT64_MAX) {
+ /* End of of a virtually contiguous range */
+ map->ops.notify_cb(map->cb_ctx, map,
+ SPDK_MEM_MAP_NOTIFY_UNREGISTER,
+ (void *)contig_start,
+ contig_end - contig_start + VALUE_2MB);
+ }
+ contig_end = UINT64_MAX;
+ continue;
+ }
+
+ for (; idx_1gb < UINT64_MAX; idx_1gb--) {
+ if ((map_1gb->map[idx_1gb].translation_2mb & REG_MAP_REGISTERED) &&
+ (contig_end == UINT64_MAX || (map_1gb->map[idx_1gb].translation_2mb & REG_MAP_NOTIFY_START) == 0)) {
+ /* Rebuild the virtual address from the indexes */
+ uint64_t vaddr = (idx_256tb << SHIFT_1GB) | (idx_1gb << SHIFT_2MB);
+
+ if (contig_end == UINT64_MAX) {
+ contig_end = vaddr;
+ }
+ contig_start = vaddr;
+ } else {
+ if (contig_end != UINT64_MAX) {
+ /* End of of a virtually contiguous range */
+ map->ops.notify_cb(map->cb_ctx, map,
+ SPDK_MEM_MAP_NOTIFY_UNREGISTER,
+ (void *)contig_start,
+ contig_end - contig_start + VALUE_2MB);
+ idx_1gb++;
+ }
+ contig_end = UINT64_MAX;
+ }
+ }
+ idx_1gb = sizeof(map_1gb->map) / sizeof(map_1gb->map[0]) - 1;
+ }
+
+ pthread_mutex_unlock(&g_mem_reg_map->mutex);
+ return rc;
+}
+
+struct spdk_mem_map *
+spdk_mem_map_alloc(uint64_t default_translation, const struct spdk_mem_map_ops *ops, void *cb_ctx)
+{
+ struct spdk_mem_map *map;
+ int rc;
+
+ map = calloc(1, sizeof(*map));
+ if (map == NULL) {
+ return NULL;
+ }
+
+ if (pthread_mutex_init(&map->mutex, NULL)) {
+ free(map);
+ return NULL;
+ }
+
+ map->default_translation = default_translation;
+ map->cb_ctx = cb_ctx;
+ if (ops) {
+ map->ops = *ops;
+ }
+
+ if (ops && ops->notify_cb) {
+ pthread_mutex_lock(&g_spdk_mem_map_mutex);
+ rc = spdk_mem_map_notify_walk(map, SPDK_MEM_MAP_NOTIFY_REGISTER);
+ if (rc != 0) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ DEBUG_PRINT("Initial mem_map notify failed\n");
+ pthread_mutex_destroy(&map->mutex);
+ free(map);
+ return NULL;
+ }
+ TAILQ_INSERT_TAIL(&g_spdk_mem_maps, map, tailq);
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ }
+
+ return map;
+}
+
+void
+spdk_mem_map_free(struct spdk_mem_map **pmap)
+{
+ struct spdk_mem_map *map;
+ size_t i;
+
+ if (!pmap) {
+ return;
+ }
+
+ map = *pmap;
+
+ if (!map) {
+ return;
+ }
+
+ if (map->ops.notify_cb) {
+ pthread_mutex_lock(&g_spdk_mem_map_mutex);
+ spdk_mem_map_notify_walk(map, SPDK_MEM_MAP_NOTIFY_UNREGISTER);
+ TAILQ_REMOVE(&g_spdk_mem_maps, map, tailq);
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ }
+
+ for (i = 0; i < sizeof(map->map_256tb.map) / sizeof(map->map_256tb.map[0]); i++) {
+ free(map->map_256tb.map[i]);
+ }
+
+ pthread_mutex_destroy(&map->mutex);
+
+ free(map);
+ *pmap = NULL;
+}
+
+int
+spdk_mem_register(void *vaddr, size_t len)
+{
+ struct spdk_mem_map *map;
+ int rc;
+ void *seg_vaddr;
+ size_t seg_len;
+ uint64_t reg;
+
+ if ((uintptr_t)vaddr & ~MASK_256TB) {
+ DEBUG_PRINT("invalid usermode virtual address %p\n", vaddr);
+ return -EINVAL;
+ }
+
+ if (((uintptr_t)vaddr & MASK_2MB) || (len & MASK_2MB)) {
+ DEBUG_PRINT("invalid %s parameters, vaddr=%p len=%ju\n",
+ __func__, vaddr, len);
+ return -EINVAL;
+ }
+
+ if (len == 0) {
+ return 0;
+ }
+
+ pthread_mutex_lock(&g_spdk_mem_map_mutex);
+
+ seg_vaddr = vaddr;
+ seg_len = len;
+ while (seg_len > 0) {
+ reg = spdk_mem_map_translate(g_mem_reg_map, (uint64_t)seg_vaddr, NULL);
+ if (reg & REG_MAP_REGISTERED) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return -EBUSY;
+ }
+ seg_vaddr += VALUE_2MB;
+ seg_len -= VALUE_2MB;
+ }
+
+ seg_vaddr = vaddr;
+ seg_len = 0;
+ while (len > 0) {
+ spdk_mem_map_set_translation(g_mem_reg_map, (uint64_t)vaddr, VALUE_2MB,
+ seg_len == 0 ? REG_MAP_REGISTERED | REG_MAP_NOTIFY_START : REG_MAP_REGISTERED);
+ seg_len += VALUE_2MB;
+ vaddr += VALUE_2MB;
+ len -= VALUE_2MB;
+ }
+
+ TAILQ_FOREACH(map, &g_spdk_mem_maps, tailq) {
+ rc = map->ops.notify_cb(map->cb_ctx, map, SPDK_MEM_MAP_NOTIFY_REGISTER, seg_vaddr, seg_len);
+ if (rc != 0) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return rc;
+ }
+ }
+
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return 0;
+}
+
+int
+spdk_mem_unregister(void *vaddr, size_t len)
+{
+ struct spdk_mem_map *map;
+ int rc;
+ void *seg_vaddr;
+ size_t seg_len;
+ uint64_t reg, newreg;
+
+ if ((uintptr_t)vaddr & ~MASK_256TB) {
+ DEBUG_PRINT("invalid usermode virtual address %p\n", vaddr);
+ return -EINVAL;
+ }
+
+ if (((uintptr_t)vaddr & MASK_2MB) || (len & MASK_2MB)) {
+ DEBUG_PRINT("invalid %s parameters, vaddr=%p len=%ju\n",
+ __func__, vaddr, len);
+ return -EINVAL;
+ }
+
+ pthread_mutex_lock(&g_spdk_mem_map_mutex);
+
+ /* The first page must be a start of a region. Also check if it's
+ * registered to make sure we don't return -ERANGE for non-registered
+ * regions.
+ */
+ reg = spdk_mem_map_translate(g_mem_reg_map, (uint64_t)vaddr, NULL);
+ if ((reg & REG_MAP_REGISTERED) && (reg & REG_MAP_NOTIFY_START) == 0) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return -ERANGE;
+ }
+
+ seg_vaddr = vaddr;
+ seg_len = len;
+ while (seg_len > 0) {
+ reg = spdk_mem_map_translate(g_mem_reg_map, (uint64_t)seg_vaddr, NULL);
+ if ((reg & REG_MAP_REGISTERED) == 0) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return -EINVAL;
+ }
+ seg_vaddr += VALUE_2MB;
+ seg_len -= VALUE_2MB;
+ }
+
+ newreg = spdk_mem_map_translate(g_mem_reg_map, (uint64_t)seg_vaddr, NULL);
+ /* If the next page is registered, it must be a start of a region as well,
+ * otherwise we'd be unregistering only a part of a region.
+ */
+ if ((newreg & REG_MAP_NOTIFY_START) == 0 && (newreg & REG_MAP_REGISTERED)) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return -ERANGE;
+ }
+ seg_vaddr = vaddr;
+ seg_len = 0;
+
+ while (len > 0) {
+ reg = spdk_mem_map_translate(g_mem_reg_map, (uint64_t)vaddr, NULL);
+ spdk_mem_map_set_translation(g_mem_reg_map, (uint64_t)vaddr, VALUE_2MB, 0);
+
+ if (seg_len > 0 && (reg & REG_MAP_NOTIFY_START)) {
+ TAILQ_FOREACH(map, &g_spdk_mem_maps, tailq) {
+ rc = map->ops.notify_cb(map->cb_ctx, map, SPDK_MEM_MAP_NOTIFY_UNREGISTER, seg_vaddr, seg_len);
+ if (rc != 0) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return rc;
+ }
+ }
+
+ seg_vaddr = vaddr;
+ seg_len = VALUE_2MB;
+ } else {
+ seg_len += VALUE_2MB;
+ }
+
+ vaddr += VALUE_2MB;
+ len -= VALUE_2MB;
+ }
+
+ if (seg_len > 0) {
+ TAILQ_FOREACH(map, &g_spdk_mem_maps, tailq) {
+ rc = map->ops.notify_cb(map->cb_ctx, map, SPDK_MEM_MAP_NOTIFY_UNREGISTER, seg_vaddr, seg_len);
+ if (rc != 0) {
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return rc;
+ }
+ }
+ }
+
+ pthread_mutex_unlock(&g_spdk_mem_map_mutex);
+ return 0;
+}
+
+static struct map_1gb *
+spdk_mem_map_get_map_1gb(struct spdk_mem_map *map, uint64_t vfn_2mb)
+{
+ struct map_1gb *map_1gb;
+ uint64_t idx_256tb = MAP_256TB_IDX(vfn_2mb);
+ size_t i;
+
+ if (spdk_unlikely(idx_256tb >= SPDK_COUNTOF(map->map_256tb.map))) {
+ return NULL;
+ }
+
+ map_1gb = map->map_256tb.map[idx_256tb];
+
+ if (!map_1gb) {
+ pthread_mutex_lock(&map->mutex);
+
+ /* Recheck to make sure nobody else got the mutex first. */
+ map_1gb = map->map_256tb.map[idx_256tb];
+ if (!map_1gb) {
+ map_1gb = malloc(sizeof(struct map_1gb));
+ if (map_1gb) {
+ /* initialize all entries to default translation */
+ for (i = 0; i < SPDK_COUNTOF(map_1gb->map); i++) {
+ map_1gb->map[i].translation_2mb = map->default_translation;
+ }
+ map->map_256tb.map[idx_256tb] = map_1gb;
+ }
+ }
+
+ pthread_mutex_unlock(&map->mutex);
+
+ if (!map_1gb) {
+ DEBUG_PRINT("allocation failed\n");
+ return NULL;
+ }
+ }
+
+ return map_1gb;
+}
+
+int
+spdk_mem_map_set_translation(struct spdk_mem_map *map, uint64_t vaddr, uint64_t size,
+ uint64_t translation)
+{
+ uint64_t vfn_2mb;
+ struct map_1gb *map_1gb;
+ uint64_t idx_1gb;
+ struct map_2mb *map_2mb;
+
+ if ((uintptr_t)vaddr & ~MASK_256TB) {
+ DEBUG_PRINT("invalid usermode virtual address %lu\n", vaddr);
+ return -EINVAL;
+ }
+
+ /* For now, only 2 MB-aligned registrations are supported */
+ if (((uintptr_t)vaddr & MASK_2MB) || (size & MASK_2MB)) {
+ DEBUG_PRINT("invalid %s parameters, vaddr=%lu len=%ju\n",
+ __func__, vaddr, size);
+ return -EINVAL;
+ }
+
+ vfn_2mb = vaddr >> SHIFT_2MB;
+
+ while (size) {
+ map_1gb = spdk_mem_map_get_map_1gb(map, vfn_2mb);
+ if (!map_1gb) {
+ DEBUG_PRINT("could not get %p map\n", (void *)vaddr);
+ return -ENOMEM;
+ }
+
+ idx_1gb = MAP_1GB_IDX(vfn_2mb);
+ map_2mb = &map_1gb->map[idx_1gb];
+ map_2mb->translation_2mb = translation;
+
+ size -= VALUE_2MB;
+ vfn_2mb++;
+ }
+
+ return 0;
+}
+
+int
+spdk_mem_map_clear_translation(struct spdk_mem_map *map, uint64_t vaddr, uint64_t size)
+{
+ uint64_t vfn_2mb;
+ struct map_1gb *map_1gb;
+ uint64_t idx_1gb;
+ struct map_2mb *map_2mb;
+
+ if ((uintptr_t)vaddr & ~MASK_256TB) {
+ DEBUG_PRINT("invalid usermode virtual address %lu\n", vaddr);
+ return -EINVAL;
+ }
+
+ /* For now, only 2 MB-aligned registrations are supported */
+ if (((uintptr_t)vaddr & MASK_2MB) || (size & MASK_2MB)) {
+ DEBUG_PRINT("invalid %s parameters, vaddr=%lu len=%ju\n",
+ __func__, vaddr, size);
+ return -EINVAL;
+ }
+
+ vfn_2mb = vaddr >> SHIFT_2MB;
+
+ while (size) {
+ map_1gb = spdk_mem_map_get_map_1gb(map, vfn_2mb);
+ if (!map_1gb) {
+ DEBUG_PRINT("could not get %p map\n", (void *)vaddr);
+ return -ENOMEM;
+ }
+
+ idx_1gb = MAP_1GB_IDX(vfn_2mb);
+ map_2mb = &map_1gb->map[idx_1gb];
+ map_2mb->translation_2mb = map->default_translation;
+
+ size -= VALUE_2MB;
+ vfn_2mb++;
+ }
+
+ return 0;
+}
+
+uint64_t
+spdk_mem_map_translate(const struct spdk_mem_map *map, uint64_t vaddr, uint64_t *size)
+{
+ const struct map_1gb *map_1gb;
+ const struct map_2mb *map_2mb;
+ uint64_t idx_256tb;
+ uint64_t idx_1gb;
+ uint64_t vfn_2mb;
+ uint64_t total_size = 0;
+ uint64_t cur_size;
+ uint64_t prev_translation;
+
+ if (size != NULL) {
+ total_size = *size;
+ *size = 0;
+ }
+
+ if (spdk_unlikely(vaddr & ~MASK_256TB)) {
+ DEBUG_PRINT("invalid usermode virtual address %p\n", (void *)vaddr);
+ return map->default_translation;
+ }
+
+ vfn_2mb = vaddr >> SHIFT_2MB;
+ idx_256tb = MAP_256TB_IDX(vfn_2mb);
+ idx_1gb = MAP_1GB_IDX(vfn_2mb);
+
+ map_1gb = map->map_256tb.map[idx_256tb];
+ if (spdk_unlikely(!map_1gb)) {
+ return map->default_translation;
+ }
+
+ cur_size = VALUE_2MB;
+ if (size != NULL) {
+ *size = VALUE_2MB;
+ }
+
+ map_2mb = &map_1gb->map[idx_1gb];
+ if (size == NULL || map->ops.are_contiguous == NULL ||
+ map_2mb->translation_2mb == map->default_translation) {
+ return map_2mb->translation_2mb;
+ }
+
+ prev_translation = map_2mb->translation_2mb;;
+ while (cur_size < total_size) {
+ vfn_2mb++;
+ idx_256tb = MAP_256TB_IDX(vfn_2mb);
+ idx_1gb = MAP_1GB_IDX(vfn_2mb);
+
+ map_1gb = map->map_256tb.map[idx_256tb];
+ if (spdk_unlikely(!map_1gb)) {
+ break;
+ }
+
+ map_2mb = &map_1gb->map[idx_1gb];
+ if (!map->ops.are_contiguous(prev_translation, map_2mb->translation_2mb)) {
+ break;
+ }
+
+ cur_size += VALUE_2MB;
+ prev_translation = map_2mb->translation_2mb;
+ }
+
+ *size = cur_size;
+ return prev_translation;
+}
+
+#if RTE_VERSION >= RTE_VERSION_NUM(18, 05, 0, 0)
+static void
+memory_hotplug_cb(enum rte_mem_event event_type,
+ const void *addr, size_t len, void *arg)
+{
+ if (event_type == RTE_MEM_EVENT_ALLOC) {
+ while (len > 0) {
+ struct rte_memseg *seg;
+
+ seg = rte_mem_virt2memseg(addr, NULL);
+ assert(seg != NULL);
+ assert(len >= seg->hugepage_sz);
+
+ spdk_mem_register((void *)seg->addr, seg->hugepage_sz);
+ addr = (void *)((uintptr_t)addr + seg->hugepage_sz);
+ len -= seg->hugepage_sz;
+ }
+ } else if (event_type == RTE_MEM_EVENT_FREE) {
+ spdk_mem_unregister((void *)addr, len);
+ }
+}
+
+static int
+memory_iter_cb(const struct rte_memseg_list *msl,
+ const struct rte_memseg *ms, size_t len, void *arg)
+{
+ return spdk_mem_register(ms->addr, len);
+}
+#endif
+
+int
+spdk_mem_map_init(void)
+{
+ g_mem_reg_map = spdk_mem_map_alloc(0, NULL, NULL);
+ if (g_mem_reg_map == NULL) {
+ DEBUG_PRINT("memory registration map allocation failed\n");
+ return -1;
+ }
+
+ /*
+ * Walk all DPDK memory segments and register them
+ * with the master memory map
+ */
+#if RTE_VERSION >= RTE_VERSION_NUM(18, 05, 0, 0)
+ rte_mem_event_callback_register("spdk", memory_hotplug_cb, NULL);
+ rte_memseg_contig_walk(memory_iter_cb, NULL);
+#else
+ struct rte_mem_config *mcfg;
+ size_t seg_idx;
+
+ mcfg = rte_eal_get_configuration()->mem_config;
+ for (seg_idx = 0; seg_idx < RTE_MAX_MEMSEG; seg_idx++) {
+ struct rte_memseg *seg = &mcfg->memseg[seg_idx];
+
+ if (seg->addr == NULL) {
+ break;
+ }
+
+ spdk_mem_register(seg->addr, seg->len);
+ }
+#endif
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 18:50:07 +0000