1 files changed, 284 insertions, 0 deletions

diff --git a/drivers/mempool/dpaa/dpaa_mempool.c b/drivers/mempool/dpaa/dpaa_mempool.c
new file mode 100644
index 00000000..f5ee80f2
--- /dev/null
+++ b/drivers/mempool/dpaa/dpaa_mempool.c
@@ -0,0 +1,284 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2017 NXP.
+ *
+ *   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 NXP 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.
+ */
+
+/* System headers */
+#include <stdio.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sched.h>
+#include <signal.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+#include <rte_byteorder.h>
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_memory.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_malloc.h>
+#include <rte_ring.h>
+
+#include <dpaa_mempool.h>
+
+struct dpaa_bp_info rte_dpaa_bpid_info[DPAA_MAX_BPOOLS];
+
+static int
+dpaa_mbuf_create_pool(struct rte_mempool *mp)
+{
+	struct bman_pool *bp;
+	struct bm_buffer bufs[8];
+	struct dpaa_bp_info *bp_info;
+	uint8_t bpid;
+	int num_bufs = 0, ret = 0;
+	struct bman_pool_params params = {
+		.flags = BMAN_POOL_FLAG_DYNAMIC_BPID
+	};
+
+	MEMPOOL_INIT_FUNC_TRACE();
+
+	bp = bman_new_pool(&params);
+	if (!bp) {
+		DPAA_MEMPOOL_ERR("bman_new_pool() failed");
+		return -ENODEV;
+	}
+	bpid = bman_get_params(bp)->bpid;
+
+	/* Drain the pool of anything already in it. */
+	do {
+		/* Acquire is all-or-nothing, so we drain in 8s,
+		 * then in 1s for the remainder.
+		 */
+		if (ret != 1)
+			ret = bman_acquire(bp, bufs, 8, 0);
+		if (ret < 8)
+			ret = bman_acquire(bp, bufs, 1, 0);
+		if (ret > 0)
+			num_bufs += ret;
+	} while (ret > 0);
+	if (num_bufs)
+		DPAA_MEMPOOL_WARN("drained %u bufs from BPID %d",
+				  num_bufs, bpid);
+
+	rte_dpaa_bpid_info[bpid].mp = mp;
+	rte_dpaa_bpid_info[bpid].bpid = bpid;
+	rte_dpaa_bpid_info[bpid].size = mp->elt_size;
+	rte_dpaa_bpid_info[bpid].bp = bp;
+	rte_dpaa_bpid_info[bpid].meta_data_size =
+		sizeof(struct rte_mbuf) + rte_pktmbuf_priv_size(mp);
+	rte_dpaa_bpid_info[bpid].dpaa_ops_index = mp->ops_index;
+
+	bp_info = rte_malloc(NULL,
+			     sizeof(struct dpaa_bp_info),
+			     RTE_CACHE_LINE_SIZE);
+	if (!bp_info) {
+		DPAA_MEMPOOL_WARN("Memory allocation failed for bp_info");
+		bman_free_pool(bp);
+		return -ENOMEM;
+	}
+
+	rte_memcpy(bp_info, (void *)&rte_dpaa_bpid_info[bpid],
+		   sizeof(struct dpaa_bp_info));
+	mp->pool_data = (void *)bp_info;
+
+	DPAA_MEMPOOL_INFO("BMAN pool created for bpid =%d", bpid);
+	return 0;
+}
+
+static void
+dpaa_mbuf_free_pool(struct rte_mempool *mp)
+{
+	struct dpaa_bp_info *bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
+
+	MEMPOOL_INIT_FUNC_TRACE();
+
+	if (bp_info) {
+		bman_free_pool(bp_info->bp);
+		DPAA_MEMPOOL_INFO("BMAN pool freed for bpid =%d",
+				  bp_info->bpid);
+		rte_free(mp->pool_data);
+		mp->pool_data = NULL;
+	}
+}
+
+static void
+dpaa_buf_free(struct dpaa_bp_info *bp_info, uint64_t addr)
+{
+	struct bm_buffer buf;
+	int ret;
+
+	DPAA_MEMPOOL_DEBUG("Free 0x%lx to bpid: %d", addr, bp_info->bpid);
+
+	bm_buffer_set64(&buf, addr);
+retry:
+	ret = bman_release(bp_info->bp, &buf, 1, 0);
+	if (ret) {
+		DPAA_MEMPOOL_DEBUG("BMAN busy. Retrying...");
+		cpu_spin(CPU_SPIN_BACKOFF_CYCLES);
+		goto retry;
+	}
+}
+
+static int
+dpaa_mbuf_free_bulk(struct rte_mempool *pool,
+		    void *const *obj_table,
+		    unsigned int n)
+{
+	struct dpaa_bp_info *bp_info = DPAA_MEMPOOL_TO_POOL_INFO(pool);
+	int ret;
+	unsigned int i = 0;
+
+	DPAA_MEMPOOL_DPDEBUG("Request to free %d buffers in bpid = %d",
+			     n, bp_info->bpid);
+
+	ret = rte_dpaa_portal_init((void *)0);
+	if (ret) {
+		DPAA_MEMPOOL_ERR("rte_dpaa_portal_init failed with ret: %d",
+				 ret);
+		return 0;
+	}
+
+	while (i < n) {
+		dpaa_buf_free(bp_info,
+			      (uint64_t)rte_mempool_virt2iova(obj_table[i]) +
+			      bp_info->meta_data_size);
+		i = i + 1;
+	}
+
+	DPAA_MEMPOOL_DPDEBUG("freed %d buffers in bpid =%d",
+			     n, bp_info->bpid);
+
+	return 0;
+}
+
+static int
+dpaa_mbuf_alloc_bulk(struct rte_mempool *pool,
+		     void **obj_table,
+		     unsigned int count)
+{
+	struct rte_mbuf **m = (struct rte_mbuf **)obj_table;
+	struct bm_buffer bufs[DPAA_MBUF_MAX_ACQ_REL];
+	struct dpaa_bp_info *bp_info;
+	void *bufaddr;
+	int i, ret;
+	unsigned int n = 0;
+
+	bp_info = DPAA_MEMPOOL_TO_POOL_INFO(pool);
+
+	DPAA_MEMPOOL_DPDEBUG("Request to alloc %d buffers in bpid = %d",
+			     count, bp_info->bpid);
+
+	if (unlikely(count >= (RTE_MEMPOOL_CACHE_MAX_SIZE * 2))) {
+		DPAA_MEMPOOL_ERR("Unable to allocate requested (%u) buffers",
+				 count);
+		return -1;
+	}
+
+	ret = rte_dpaa_portal_init((void *)0);
+	if (ret) {
+		DPAA_MEMPOOL_ERR("rte_dpaa_portal_init failed with ret: %d",
+				 ret);
+		return -1;
+	}
+
+	while (n < count) {
+		/* Acquire is all-or-nothing, so we drain in 7s,
+		 * then the remainder.
+		 */
+		if ((count - n) > DPAA_MBUF_MAX_ACQ_REL) {
+			ret = bman_acquire(bp_info->bp, bufs,
+					   DPAA_MBUF_MAX_ACQ_REL, 0);
+		} else {
+			ret = bman_acquire(bp_info->bp, bufs, count - n, 0);
+		}
+		/* In case of less than requested number of buffers available
+		 * in pool, qbman_swp_acquire returns 0
+		 */
+		if (ret <= 0) {
+			DPAA_MEMPOOL_DPDEBUG("Buffer acquire failed (%d)",
+					     ret);
+			/* The API expect the exact number of requested
+			 * buffers. Releasing all buffers allocated
+			 */
+			dpaa_mbuf_free_bulk(pool, obj_table, n);
+			return -ENOBUFS;
+		}
+		/* assigning mbuf from the acquired objects */
+		for (i = 0; (i < ret) && bufs[i].addr; i++) {
+			/* TODO-errata - objerved that bufs may be null
+			 * i.e. first buffer is valid, remaining 6 buffers
+			 * may be null.
+			 */
+			bufaddr = (void *)rte_dpaa_mem_ptov(bufs[i].addr);
+			m[n] = (struct rte_mbuf *)((char *)bufaddr
+						- bp_info->meta_data_size);
+			DPAA_MEMPOOL_DPDEBUG("Paddr (%p), FD (%p) from BMAN",
+					     (void *)bufaddr, (void *)m[n]);
+			n++;
+		}
+	}
+
+	DPAA_MEMPOOL_DPDEBUG("Allocated %d buffers from bpid=%d",
+			     n, bp_info->bpid);
+	return 0;
+}
+
+static unsigned int
+dpaa_mbuf_get_count(const struct rte_mempool *mp)
+{
+	struct dpaa_bp_info *bp_info;
+
+	MEMPOOL_INIT_FUNC_TRACE();
+
+	if (!mp || !mp->pool_data) {
+		DPAA_MEMPOOL_ERR("Invalid mempool provided\n");
+		return 0;
+	}
+
+	bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
+
+	return bman_query_free_buffers(bp_info->bp);
+}
+
+struct rte_mempool_ops dpaa_mpool_ops = {
+	.name = "dpaa",
+	.alloc = dpaa_mbuf_create_pool,
+	.free = dpaa_mbuf_free_pool,
+	.enqueue = dpaa_mbuf_free_bulk,
+	.dequeue = dpaa_mbuf_alloc_bulk,
+	.get_count = dpaa_mbuf_get_count,
+};
+
+MEMPOOL_REGISTER_OPS(dpaa_mpool_ops);