1 files changed, 253 insertions, 0 deletions
diff --git a/drivers/mempool/octeontx/rte_mempool_octeontx.c b/drivers/mempool/octeontx/rte_mempool_octeontx.c
new file mode 100644
index 00000000..e89355cd
--- /dev/null
+++ b/drivers/mempool/octeontx/rte_mempool_octeontx.c
@@ -0,0 +1,253 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) 2017 Cavium Inc. 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 <stdio.h>
+#include <rte_mempool.h>
+#include <rte_malloc.h>
+#include <rte_mbuf.h>
+
+#include "octeontx_fpavf.h"
+
+/*
+ * Per-pool descriptor.
+ * Links mempool with the corresponding memzone,
+ * that provides memory under the pool's elements.
+ */
+struct octeontx_pool_info {
+	const struct rte_mempool *mp;
+	uintptr_t mz_addr;
+
+	SLIST_ENTRY(octeontx_pool_info) link;
+};
+
+SLIST_HEAD(octeontx_pool_list, octeontx_pool_info);
+
+/* List of the allocated pools */
+static struct octeontx_pool_list octeontx_pool_head =
+				SLIST_HEAD_INITIALIZER(octeontx_pool_head);
+/* Spinlock to protect pool list */
+static rte_spinlock_t pool_list_lock = RTE_SPINLOCK_INITIALIZER;
+
+static int
+octeontx_fpavf_alloc(struct rte_mempool *mp)
+{
+	uintptr_t pool;
+	struct octeontx_pool_info *pool_info;
+	uint32_t memseg_count = mp->size;
+	uint32_t object_size;
+	uintptr_t va_start;
+	int rc = 0;
+
+	rte_spinlock_lock(&pool_list_lock);
+	SLIST_FOREACH(pool_info, &octeontx_pool_head, link) {
+		if (pool_info->mp == mp)
+			break;
+	}
+	if (pool_info == NULL) {
+		rte_spinlock_unlock(&pool_list_lock);
+		return -ENXIO;
+	}
+
+	/* virtual hugepage mapped addr */
+	va_start = pool_info->mz_addr;
+	rte_spinlock_unlock(&pool_list_lock);
+
+	object_size = mp->elt_size + mp->header_size + mp->trailer_size;
+
+	pool = octeontx_fpa_bufpool_create(object_size, memseg_count,
+						OCTEONTX_FPAVF_BUF_OFFSET,
+						(char **)&va_start,
+						mp->socket_id);
+	rc = octeontx_fpa_bufpool_block_size(pool);
+	if (rc < 0)
+		goto _end;
+
+	if ((uint32_t)rc != object_size)
+		fpavf_log_err("buffer size mismatch: %d instead of %u\n",
+				rc, object_size);
+
+	fpavf_log_info("Pool created %p with .. ", (void *)pool);
+	fpavf_log_info("obj_sz %d, cnt %d\n", object_size, memseg_count);
+
+	/* assign pool handle to mempool */
+	mp->pool_id = (uint64_t)pool;
+
+	return 0;
+
+_end:
+	return rc;
+}
+
+static void
+octeontx_fpavf_free(struct rte_mempool *mp)
+{
+	struct octeontx_pool_info *pool_info;
+	uintptr_t pool;
+
+	pool = (uintptr_t)mp->pool_id;
+
+	rte_spinlock_lock(&pool_list_lock);
+	SLIST_FOREACH(pool_info, &octeontx_pool_head, link) {
+		if (pool_info->mp == mp)
+			break;
+	}
+
+	if (pool_info == NULL) {
+		rte_spinlock_unlock(&pool_list_lock);
+		rte_panic("%s: trying to free pool with no valid metadata",
+		    __func__);
+	}
+
+	SLIST_REMOVE(&octeontx_pool_head, pool_info, octeontx_pool_info, link);
+	rte_spinlock_unlock(&pool_list_lock);
+
+	rte_free(pool_info);
+	octeontx_fpa_bufpool_destroy(pool, mp->socket_id);
+}
+
+static __rte_always_inline void *
+octeontx_fpa_bufpool_alloc(uintptr_t handle)
+{
+	return (void *)(uintptr_t)fpavf_read64((void *)(handle +
+						FPA_VF_VHAURA_OP_ALLOC(0)));
+}
+
+static __rte_always_inline void
+octeontx_fpa_bufpool_free(uintptr_t handle, void *buf)
+{
+	uint64_t free_addr = FPA_VF_FREE_ADDRS_S(FPA_VF_VHAURA_OP_FREE(0),
+						 0 /* DWB */, 1 /* FABS */);
+
+	fpavf_write64((uintptr_t)buf, (void *)(uintptr_t)(handle + free_addr));
+}
+
+static int
+octeontx_fpavf_enqueue(struct rte_mempool *mp, void * const *obj_table,
+			unsigned int n)
+{
+	uintptr_t pool;
+	unsigned int index;
+
+	pool = (uintptr_t)mp->pool_id;
+	/* Get pool bar address from handle */
+	pool &= ~(uint64_t)FPA_GPOOL_MASK;
+	for (index = 0; index < n; index++, obj_table++)
+		octeontx_fpa_bufpool_free(pool, *obj_table);
+
+	return 0;
+}
+
+static int
+octeontx_fpavf_dequeue(struct rte_mempool *mp, void **obj_table,
+			unsigned int n)
+{
+	unsigned int index;
+	uintptr_t pool;
+	void *obj;
+
+	pool = (uintptr_t)mp->pool_id;
+	/* Get pool bar address from handle */
+	pool &= ~(uint64_t)FPA_GPOOL_MASK;
+	for (index = 0; index < n; index++, obj_table++) {
+		obj = octeontx_fpa_bufpool_alloc(pool);
+		if (obj == NULL) {
+			/*
+			 * Failed to allocate the requested number of objects
+			 * from the pool. Current pool implementation requires
+			 * completing the entire request or returning error
+			 * otherwise.
+			 * Free already allocated buffers to the pool.
+			 */
+			for (; index > 0; index--) {
+				obj_table--;
+				octeontx_fpa_bufpool_free(pool, *obj_table);
+			}
+			return -ENOMEM;
+		}
+		*obj_table = obj;
+	}
+
+	return 0;
+}
+
+static unsigned int
+octeontx_fpavf_get_count(const struct rte_mempool *mp)
+{
+	uintptr_t pool;
+
+	pool = (uintptr_t)mp->pool_id;
+
+	return octeontx_fpa_bufpool_free_count(pool);
+}
+
+static int
+octeontx_fpavf_get_capabilities(const struct rte_mempool *mp,
+				unsigned int *flags)
+{
+	RTE_SET_USED(mp);
+	*flags |= (MEMPOOL_F_CAPA_PHYS_CONTIG |
+			MEMPOOL_F_CAPA_BLK_ALIGNED_OBJECTS);
+	return 0;
+}
+
+static int
+octeontx_fpavf_register_memory_area(const struct rte_mempool *mp,
+				    char *vaddr, rte_iova_t paddr, size_t len)
+{
+	struct octeontx_pool_info *pool_info;
+
+	RTE_SET_USED(paddr);
+	RTE_SET_USED(len);
+
+	pool_info = rte_malloc("octeontx_pool_info", sizeof(*pool_info), 0);
+	if (pool_info == NULL)
+		return -ENOMEM;
+
+	pool_info->mp = mp;
+	pool_info->mz_addr = (uintptr_t)vaddr;
+	rte_spinlock_lock(&pool_list_lock);
+	SLIST_INSERT_HEAD(&octeontx_pool_head, pool_info, link);
+	rte_spinlock_unlock(&pool_list_lock);
+	return 0;
+}
+
+static struct rte_mempool_ops octeontx_fpavf_ops = {
+	.name = "octeontx_fpavf",
+	.alloc = octeontx_fpavf_alloc,
+	.free = octeontx_fpavf_free,
+	.enqueue = octeontx_fpavf_enqueue,
+	.dequeue = octeontx_fpavf_dequeue,
+	.get_count = octeontx_fpavf_get_count,
+	.get_capabilities = octeontx_fpavf_get_capabilities,
+	.register_memory_area = octeontx_fpavf_register_memory_area,
+};
+
+MEMPOOL_REGISTER_OPS(octeontx_fpavf_ops);